STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.6 1.9 1.9 10.6 14.2 19.3 24.1 22.6 21.5 15.4 4.6 -2.3 11.2 MINIMUN AIR TEMPERATURE (C) -4.0 -2.6 -3.0 5.3 7.4 11.3 15.8 13.8 10.3 7.1 1.0 -6.6 4.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 13 12 12 0 0 0 0 0 0 0 2 22 61 DAYS WITH FREEZING MIN.<= 0 26 22 24 0 0 0 0 0 0 0 15 27 114 TEMPERATURE RECORDS LOWEST(C) -12.1 -9.2 -9.8 1.0 3.6 7.8 11.2 10.0 5.0 3.2 -4.2 -15.0 -15.0 DAY 25 17 21 6 7 22 2 31 30 29 21 13 MAXIMUM AIR TEMPERATURE (C) 6.0 6.6 7.5 16.6 21.0 27.0 31.8 29.9 27.9 21.1 8.7 2.3 17.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 6 26 16 6 0 0 0 54 DAYS WITH MAXIMUM TEMP. <= 0 4 0 3 0 0 0 0 0 0 0 0 8 15 TEMPERATURE RECORDS HIGHEST(C) 10.2 14.8 16.0 21.2 27.2 35.8 36.2 36.0 30.8 26.6 20.4 9.4 36.2 DAY 9 28 30 15 31 30 31 1 3 2 1 27 DIF. BETWEEN (MAX.-MIN.) (C) 10.0 9.2 10.5 11.3 13.6 15.7 16.0 16.1 17.6 14.0 7.7 8.9 12.5 MEAN DAILY TEMP. (MDT) (C) 1.0 2.0 2.3 10.9 14.2 19.1 23.8 21.8 19.1 14.1 4.9 -2.2 10.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 14.0 93.2 41.9 1.8 0.0 0.0 0.0 150.9 HEATING DEG. DAYS(BASE 18 0C) 526.9 447.3 487.5 212.3 121.1 18.3 0.0 0.0 6.0 122.7 394.3 624.7 2961.1 DEWPOINT (MEAN C) -7.0 -3.7 -4.9 3.1 4.2 5.4 6.8 5.9 1.8 3.2 -0.2 -6.6 0.7 MIXING RATIO (G/KG) 2.82 3.54 3.30 5.85 6.38 6.88 7.61 7.20 5.39 5.87 4.59 2.89 5.19 VAPOUR PRESSURE (HPA) 3.79 4.75 4.44 7.83 8.53 9.16 10.14 9.63 7.26 7.90 6.17 3.89 6.96 SATURATION DEF. (HPA) 2.91 2.52 3.01 5.35 8.54 14.57 21.47 19.27 19.81 10.42 2.78 1.57 9.35 RELATIVE HUMIDITY (MEAN %) 60 70 66 65 57 46 36 38 31 48 74 73 55 RELATIVE HUMIDITY (MAX. %) 77 88 84 86 84 70 56 58 51 74 87 87 75 RELATIVE HUMIDITY (MIN. %) 40 50 47 39 31 25 21 23 20 31 58 58 37 RELATIVE HUMIDITY (MEAN% 03UTC) 68 82 79 83 75 64 52 57 50 73 83 80 71 RELATIVE HUMIDITY (MEAN% 09UTC) 45 58 53 47 38 28 26 26 22 35 63 63 42 RELATIVE HUMIDITY (MEAN% 15UTC) 55 63 57 53 44 34 29 34 29 46 76 73 49 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 1.7 48.8 48.8 56.2 73.4 0.7 0.2 8.8 2.1 24.8 94.9 20.1 380.5 DAYS WITH PRECIPITATION >=10 0 2 2 2 3 0 0 0 0 1 2 0 12 DAYS WITH PRECIPITATION >= 5 0 5 5 5 6 0 0 1 0 1 6 2 31 DAYS WITH PRECIPITATION >= 1 0 5 9 8 11 0 0 1 1 4 11 3 53 DAYS WITH PRECIPITATION 5 12 14 17 19 7 1 6 2 10 16 13 122 GREATEST DAILY PRECIPITATION 0.8 19.0 11.0 12.0 14.0 0.3 0.2 8.0 2.0 18.0 31.0 8.0 31.0 DAY 31 15 24 1 21 20 21 25 18 24 29 28 DAY WITH THUNDER STORM 0 0 0 5 14 4 0 5 1 5 1 1 36 DAYS WITH SNOW OR SLEET 3 9 12 0 0 0 0 0 0 0 7 12 43 DAYS WITH DUST 0 0 0 1 0 1 0 0 1 1 0 1 5 WIND DIRECTION (PREVAILING) 315 315 360 315 315 360 360 360 315 315 135 315 315 PREVAILING WIND SPEED(KNOTS) 5.8 5.6 13.6 6.7 5.5 11.1 11.4 12.2 6.1 5.7 6.2 5.8 5.7 PREVAILING WIND PERCENT 34.7 25.4 16.9 17.9 14.9 21.7 19.0 25.7 17.3 16.1 17.3 36.7 19.3 CALMS PERCENT OF WIND 21.4 30.4 33.1 37.5 33.5 23.8 20.2 18.9 20.0 29.7 44.5 28.6 28.4 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 206 150 155 173 248 2628 VECTOR WIND DIRECTION (MEAN) 301 278 25 348 263 20 42 29 1 279 59 311 357 VECTOR WIND MAGNITUDE(KNOTS) 3.5 1.3 3.3 1.5 1.1 3.5 3.5 4.2 2.5 0.7 0.7 3.3 1.8 WIND STEADINESES (MEAN %) 63.6 30.2 54.1 33.3 25.0 49.3 50.7 58.3 39.1 14.0 20.0 66.0 32.7 WIND SPEED (MEAN KNOTS) 5.5 4.3 6.1 4.5 4.4 7.1 6.9 7.2 6.4 5.0 3.5 5.0 5.5 FASTEST WIND DIRECTION 240 120 10 30 180 20 10 20 30 190 20 280 10 FASTEST WIND SPEED (KNOTS) 29 29 39 29 33 31 31 39 33 31 19 33 39 DAY 16 6 8 4 22 19 21 3 29 23 5 21 DAYS WITH SKY CLEAR (0-2)/8 14 8 7 3 13 24 26 24 26 16 5 14 180 DAYS WITH P.CLOUDY (3-6)/8 12 11 10 16 14 6 5 7 4 13 13 12 123 DAYS WITH CLOUDY (7-8)/8 5 9 14 11 4 0 0 0 0 2 12 5 62 DAYS WITH VISIBILITY =< 2 KM 0 5 3 1 2 0 0 0 0 0 5 2 18 DURATION OF SUNSHINE HOURS 204.6 166.9 145.6 158.7 269.9 332.3 336.0 328.8 303.6 221.8 128.1 184.5 2780.8 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.3 840.0 840.9 841.4 840.9 837.7 840.0 841.4 844.9 845.7 843.5 843.1 841.8 MAX. QFE PRESSURE IN HPA 848.8 847.3 848.5 848.5 848.3 844.8 844.8 845.1 849.6 852.0 850.1 854.1 854.1 DAY-HOUR 23-18 22- 6 27-18 5- 6 20-18 2- 6 15- 6 25- 6 22- 6 15- 6 16- 6 7- 6 MIN. QFE PRESSURE IN HPA 828.1 833.8 835.0 836.5 833.3 832.5 834.2 836.3 840.3 837.6 835.9 831.5 828.1 DAY-HOUR 19-18 6-12 8- 3 11-12 3- 0 17-15 24-15 6-15 5-15 1-12 10-12 27-15 MEAN QNH PRESSURE IN HPA 1018.2 1015.5 1016.6 1017.1 1016.6 1012.9 1015.5 1017.2 1021.2 1022.1 1019.6 1019.2 1017.7 MAX. QNH PRESSURE IN HPA 1025.8 1024.0 1025.4 1025.4 1025.2 1021.1 1021.1 1021.5 1026.7 1029.5 1027.3 1032.0 1032.0 DAY-HOUR 23-18 22- 6 27-18 5- 6 20-18 2- 6 15- 6 25- 6 22- 6 15- 6 16- 6 7- 6 MIN. QNH PRESSURE IN HPA 1001.7 1008.3 1009.7 1011.4 1007.7 1006.8 1008.8 1011.2 1015.9 1012.7 1010.8 1005.6 1001.7 DAY-HOUR 19-18 6-12 8- 3 11-12 3- 0 17-15 24-15 6-15 5-15 1-12 10-12 27-15 MEAN QFF PRESSURE IN HPA 1021.0 1017.4 1018.4 1012.9 1009.9 1002.9 1002.7 1005.5 ****** ****** ****** 1024.1 ****** MAX. QFF PRESSURE IN HPA 1035.0 1024.1 1029.7 1024.4 1018.9 1012.5 1010.4 1014.2 ****** ****** ****** 1042.1 ****** DAY-HOUR 24- 6 13- 3 16-21 5- 6 18- 3 3- 3 15- 3 25- 3 **-** **-** **-** 7- 3 MIN. QFF PRESSURE IN HPA 1002.0 1007.5 1009.2 1006.8 1003.0 993.9 995.3 999.7 ****** ****** ****** 1004.1 ****** DAY-HOUR 19-18 6-12 6-15 3-12 3- 0 29-15 19-12 15-12 **-** **-** **-** 27-15 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 842.5 839.9 840.8 841.1 840.7 838.0 840.0 840.9 ****** ****** ****** 843.0 ****** MAX. QFE PRESSURE IN HPA 848.1 845.7 848.0 846.6 846.2 844.3 843.1 843.2 ****** ****** ****** 853.6 ****** DAY 5 22 28 5 20 3 15 1 ** ** ** 7 MIN. QFE PRESSURE IN HPA 830.5 835.7 835.4 836.7 833.3 834.5 835.7 837.8 ****** ****** ****** 836.0 ****** DAY 20 6 8 11 3 27 20 15 ** ** ** 30 MEAN QNH PRESSURE IN HPA 1018.5 1015.4 1016.4 1016.8 1016.4 1013.2 1015.5 1016.6 ****** ****** ****** 1019.0 ****** MAX. QNH PRESSURE IN HPA 1025.0 1022.2 1024.9 1023.2 1022.8 1020.5 1019.2 1019.3 ****** ****** ****** 1031.4 ****** DAY 5 22 28 5 20 3 15 1 ** ** ** 7 MIN. QNH PRESSURE IN HPA 1004.4 1010.5 1010.2 1011.7 1007.7 1009.1 1010.5 1013.0 ****** ****** ****** 1010.9 ****** DAY 20 6 8 11 3 27 20 15 ** ** ** 30 MEAN QFF PRESSURE IN HPA 1020.4 1017.0 1017.9 1012.5 1009.8 1003.3 1002.3 1004.5 ****** ****** ****** 1023.5 ****** MAX. QFF PRESSURE IN HPA 1032.9 1022.5 1028.6 1021.4 1016.8 1011.0 1008.8 1008.3 ****** ****** ****** 1040.4 ****** DAY 24 22 17 5 18 3 22 4 ** ** ** 7 MIN. QFF PRESSURE IN HPA 1006.2 1010.1 1010.4 1008.1 1003.0 995.5 996.8 1000.2 ****** ****** ****** 1010.5 ****** DAY 20 25 6 30 3 29 20 16 ** ** ** 28 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.5 840.0 841.0 841.6 841.4 838.5 841.0 842.4 845.5 846.0 843.8 843.1 842.2 MAX. QFE PRESSURE IN HPA 847.9 846.1 847.9 846.3 846.7 844.8 844.5 844.9 848.7 850.9 849.4 853.6 853.6 DAY 24 22 28 5 20 3 15 25 22 15 16 7 MIN. QFE PRESSURE IN HPA 832.1 835.3 835.0 837.0 834.7 835.0 836.6 838.7 842.1 841.6 837.5 835.1 832.1 DAY 20 6 8 11 3 17 20 15 6 1 8 30 MEAN QNH PRESSURE IN HPA 1018.4 1015.6 1016.7 1017.3 1017.1 1013.8 1016.6 1018.3 1022.0 1022.5 1020.0 1019.1 1018.1 MAX. QNH PRESSURE IN HPA 1024.7 1022.6 1024.7 1022.9 1023.3 1021.1 1020.8 1021.2 1025.7 1028.2 1026.5 1031.4 1031.4 DAY 24 22 28 5 20 3 15 25 22 15 16 7 MIN. QNH PRESSURE IN HPA 1006.3 1010.1 1009.7 1012.0 1009.4 1009.7 1011.6 1014.0 1018.0 1017.4 1012.6 1009.8 1006.3 DAY 20 6 8 11 3 17 20 15 6 1 8 30 MEAN QFF PRESSURE IN HPA 1021.8 1018.1 1019.1 1013.7 1010.9 1004.5 1004.7 1008.0 1013.9 1017.5 1020.7 1024.6 1014.8 MAX. QFF PRESSURE IN HPA 1034.4 1024.1 1029.4 1021.9 1018.9 1012.5 1010.4 1014.2 1019.7 1025.2 1029.8 1042.1 1042.1 DAY 24 13 17 5 18 3 15 25 30 15 21 7 MIN. QFF PRESSURE IN HPA 1008.6 1010.7 1011.0 1009.0 1004.9 996.8 998.5 1002.9 1009.2 1009.4 1009.8 1011.0 996.8 DAY 12 6 10 11 3 29 20 15 4 2 8 30 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.3 840.8 841.8 842.3 841.6 838.6 841.2 842.8 846.2 846.8 844.5 843.9 842.8 MAX. QFE PRESSURE IN HPA 848.7 847.3 848.5 848.5 847.1 844.8 844.8 845.1 849.6 852.0 850.1 854.1 854.1 DAY 5 22 28 5 20 2 15 25 22 15 16 7 MIN. QFE PRESSURE IN HPA 833.2 835.5 836.1 837.5 835.0 834.9 836.6 839.3 842.9 841.7 838.2 835.4 833.2 DAY 20 6 8 11 3 17 20 6 15 1 8 30 MEAN QNH PRESSURE IN HPA 1019.4 1016.5 1017.6 1018.2 1017.4 1013.9 1016.9 1018.8 1022.8 1023.5 1020.8 1020.0 1018.8 MAX. QNH PRESSURE IN HPA 1025.7 1024.0 1025.4 1025.4 1023.8 1021.1 1021.1 1021.5 1026.7 1029.5 1027.3 1032.0 1032.0 DAY 5 22 28 5 20 2 15 25 22 15 16 7 MIN. QNH PRESSURE IN HPA 1007.6 1010.3 1011.0 1012.6 1009.7 1009.6 1011.6 1014.7 1018.9 1017.5 1013.4 1010.2 1007.6 DAY 20 6 8 11 3 17 20 6 15 1 8 30 MEAN QFF PRESSURE IN HPA 1022.7 1018.4 1019.6 1014.0 1010.7 1003.8 1003.9 1006.3 ****** ****** ****** 1025.4 ****** MAX. QFF PRESSURE IN HPA 1035.0 1023.9 1027.6 1024.4 1018.3 1011.6 1009.3 1010.5 ****** ****** ****** 1041.1 ****** DAY 24 19 17 5 18 2 15 4 ** ** ** 7 MIN. QFF PRESSURE IN HPA 1009.6 1011.0 1013.4 1008.3 1004.5 995.7 996.9 1001.8 ****** ****** ****** 1010.5 ****** DAY 12 6 6 30 3 28 20 15 ** ** ** 30 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.3 840.3 841.2 841.7 841.0 837.8 840.4 841.9 845.1 845.7 843.5 843.0 842.0 MAX. QFE PRESSURE IN HPA 847.6 847.0 848.4 848.4 846.8 844.5 843.6 844.4 848.3 850.3 849.0 851.8 851.8 DAY 28 22 27 5 19 2 15 30 22 15 15 7 MIN. QFE PRESSURE IN HPA 831.9 834.5 836.8 837.4 834.7 833.8 836.0 838.2 842.2 840.1 837.2 834.0 831.9 DAY 20 6 20 11 3 17 20 15 15 1 7 27 MEAN QNH PRESSURE IN HPA 1018.2 1015.8 1016.9 1017.5 1016.7 1013.0 1016.0 1017.8 1021.5 1022.2 1019.6 1019.0 1017.9 MAX. QNH PRESSURE IN HPA 1024.4 1023.7 1025.3 1025.3 1023.5 1020.8 1019.7 1020.7 1025.2 1027.5 1026.0 1029.3 1029.3 DAY 28 22 27 5 19 2 15 30 22 15 15 7 MIN. QNH PRESSURE IN HPA 1006.1 1009.1 1011.8 1012.5 1009.4 1008.3 1010.9 1013.4 1018.1 1015.7 1012.3 1008.5 1006.1 DAY 20 6 20 11 3 17 20 15 15 1 7 27 MEAN QFF PRESSURE IN HPA 1020.3 1017.4 1018.3 1012.8 1009.8 1002.6 1002.6 1004.9 ****** ****** ****** 1023.5 ****** MAX. QFF PRESSURE IN HPA 1031.0 1023.7 1026.4 1024.2 1016.8 1011.2 1007.6 1007.4 ****** ****** ****** 1036.1 ****** DAY 24 19 16 5 18 2 22 4 ** ** ** 7 MIN. QFF PRESSURE IN HPA 1006.9 1008.8 1011.4 1007.3 1003.3 995.4 996.7 1000.4 ****** ****** ****** 1007.6 ****** DAY 12 6 1 30 3 27 20 15 ** ** ** 27 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 841.4 839.2 840.1 840.6 840.2 836.7 839.0 840.5 843.7 844.7 842.7 842.4 840.9 MAX. QFE PRESSURE IN HPA 846.9 845.6 847.2 847.0 845.3 843.4 842.2 843.1 846.8 849.7 848.3 850.5 850.5 DAY 28 22 27 5 19 2 15 31 27 14 15 7 MIN. QFE PRESSURE IN HPA 829.9 833.8 836.4 836.5 834.8 832.8 834.5 836.7 840.3 837.6 835.9 832.0 829.9 DAY 19 6 9 11 3 17 24 6 15 1 10 27 MEAN QNH PRESSURE IN HPA 1017.2 1014.6 1015.6 1016.3 1015.7 1011.7 1014.4 1016.1 1019.9 1021.0 1018.7 1018.4 1016.6 MAX. QNH PRESSURE IN HPA 1023.6 1022.1 1023.9 1023.7 1021.7 1019.5 1018.1 1019.2 1023.5 1026.8 1025.2 1027.8 1027.8 DAY 28 22 27 5 19 2 15 31 27 14 15 7 MIN. QNH PRESSURE IN HPA 1003.8 1008.3 1011.3 1011.4 1009.5 1007.1 1009.1 1011.7 1015.9 1012.7 1010.8 1006.2 1003.8 DAY 19 6 9 11 3 17 24 6 15 1 10 27 MEAN QFF PRESSURE IN HPA 1019.3 1016.0 1017.1 1011.9 1009.1 1001.7 1001.3 1003.3 ****** ****** ****** 1022.7 ****** MAX. QFF PRESSURE IN HPA 1030.0 1022.6 1026.1 1022.5 1015.5 1010.0 1005.3 1006.7 ****** ****** ****** 1035.0 ****** DAY 23 13 16 5 17 2 15 4 ** ** ** 7 MIN. QFF PRESSURE IN HPA 1004.3 1007.5 1009.5 1006.8 1003.2 994.2 995.3 999.7 ****** ****** ****** 1005.1 ****** DAY 19 6 6 3 31 28 19 15 ** ** ** 27 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 842.0 839.6 840.3 840.7 840.1 836.4 838.7 840.4 843.8 845.1 843.2 843.1 841.1 MAX. QFE PRESSURE IN HPA 847.8 845.1 847.7 846.4 845.2 842.8 842.1 844.1 846.7 850.3 849.1 851.2 851.2 DAY 23 22 27 5 19 2 15 24 7 14 15 6 MIN. QFE PRESSURE IN HPA 829.3 835.1 836.2 836.7 834.7 832.5 834.2 836.3 840.3 838.5 836.1 831.5 829.3 DAY 19 15 9 10 3 17 24 6 5 1 8 27 MEAN QNH PRESSURE IN HPA 1017.9 1015.1 1015.9 1016.3 1015.6 1011.4 1014.0 1016.0 1019.9 1021.5 1019.3 1019.1 1016.8 MAX. QNH PRESSURE IN HPA 1024.6 1021.5 1024.5 1023.0 1021.6 1018.8 1018.0 1020.3 1023.3 1027.5 1026.1 1028.6 1028.6 DAY 23 22 27 5 19 2 15 24 7 14 15 6 MIN. QNH PRESSURE IN HPA 1003.1 1009.8 1011.1 1011.7 1009.4 1006.8 1008.8 1011.2 1015.9 1013.8 1011.0 1005.6 1003.1 DAY 19 15 9 10 3 17 24 6 5 1 8 27 MEAN QFF PRESSURE IN HPA 1021.4 1017.4 1018.4 1012.5 1009.3 1002.0 1002.0 1005.6 1011.7 1016.5 1020.0 1024.6 1013.5 MAX. QFF PRESSURE IN HPA 1032.6 1023.7 1028.3 1022.0 1016.2 1010.5 1006.9 1011.8 1015.7 1022.7 1028.4 1037.8 1037.8 DAY 23 19 16 4 17 3 21 24 29 14 16 6 MIN. QFF PRESSURE IN HPA 1004.5 1010.0 1009.2 1007.6 1003.4 993.9 996.6 1000.1 1007.0 1005.7 1008.3 1004.1 993.9 DAY 19 6 6 17 31 29 19 15 25 1 7 27 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 842.4 840.2 841.3 841.6 841.2 837.7 839.9 840.9 ****** ****** ****** 843.5 ****** MAX. QFE PRESSURE IN HPA 848.8 845.4 848.5 847.4 848.3 844.3 843.0 843.1 ****** ****** ****** 853.3 ****** DAY 23 22 27 4 20 2 31 17 ** ** ** 6 MIN. QFE PRESSURE IN HPA 828.1 835.2 836.4 837.8 834.1 833.9 835.6 837.9 ****** ****** ****** 832.8 ****** DAY 19 15 9 10 3 17 19 6 ** ** ** 27 MEAN QNH PRESSURE IN HPA 1018.3 1015.8 1017.0 1017.4 1017.0 1012.9 1015.4 1016.6 ****** ****** ****** 1019.6 ****** MAX. QNH PRESSURE IN HPA 1025.8 1021.8 1025.4 1024.2 1025.2 1020.5 1019.0 1019.2 ****** ****** ****** 1031.0 ****** DAY 23 22 27 4 20 2 31 17 ** ** ** 6 MIN. QNH PRESSURE IN HPA 1001.7 1009.9 1011.3 1013.0 1008.7 1008.4 1010.4 1013.1 ****** ****** ****** 1007.1 ****** DAY 19 15 9 10 3 17 19 6 ** ** ** 27 MEAN QFF PRESSURE IN HPA 1021.7 1017.6 1019.0 1013.1 1010.2 1002.7 1002.3 1004.7 ****** ****** ****** 1025.0 ****** MAX. QFF PRESSURE IN HPA 1034.7 1022.8 1029.7 1021.8 1017.5 1010.6 1009.3 1009.4 ****** ****** ****** 1040.5 ****** DAY 23 19 16 4 17 2 21 3 ** ** ** 6 MIN. QFF PRESSURE IN HPA 1002.0 1012.0 1012.4 1008.0 1003.9 994.6 996.5 1000.0 ****** ****** ****** 1006.9 ****** DAY 19 6 9 30 3 28 19 15 ** ** ** 27 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 842.4 840.2 841.2 841.6 841.1 838.1 840.1 841.0 ****** ****** ****** 843.3 ****** MAX. QFE PRESSURE IN HPA 848.4 845.8 848.5 847.7 847.0 844.6 843.5 843.2 ****** ****** ****** 853.6 ****** DAY 23 21 27 4 20 2 31 17 ** ** ** 6 MIN. QFE PRESSURE IN HPA 830.0 835.4 836.5 837.5 834.0 834.8 835.6 838.1 ****** ****** ****** 834.8 ****** DAY 19 15 24 10 2 17 19 14 ** ** ** 27 MEAN QNH PRESSURE IN HPA 1018.3 1015.8 1017.0 1017.4 1016.8 1013.3 1015.7 1016.7 ****** ****** ****** 1019.4 ****** MAX. QNH PRESSURE IN HPA 1025.3 1022.3 1025.4 1024.5 1023.7 1020.9 1019.6 1019.3 ****** ****** ****** 1031.4 ****** DAY 23 21 27 4 20 2 31 17 ** ** ** 6 MIN. QNH PRESSURE IN HPA 1003.9 1010.2 1011.4 1012.6 1008.5 1009.5 1010.4 1013.3 ****** ****** ****** 1009.5 ****** DAY 19 15 24 10 2 17 19 14 ** ** ** 27 MEAN QFF PRESSURE IN HPA 1020.6 1017.2 1018.3 1012.5 1009.7 1002.8 1002.2 1004.5 ****** ****** ****** 1023.9 ****** MAX. QFF PRESSURE IN HPA 1033.2 1023.0 1029.7 1020.8 1016.7 1010.7 1009.3 1008.5 ****** ****** ****** 1039.8 ****** DAY 23 21 16 4 17 2 21 3 ** ** ** 6 MIN. QFF PRESSURE IN HPA 1004.8 1010.5 1011.1 1007.0 1003.4 995.7 996.3 1000.3 ****** ****** ****** 1008.8 ****** DAY 19 24 1 30 30 29 19 15 ** ** ** 27 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.2 3.3 4.3 10.6 17.8 22.3 22.5 22.1 18.0 9.1 8.2 2.5 11.9 MINIMUN AIR TEMPERATURE (C) -2.4 -1.8 0.3 3.7 10.4 13.5 14.6 14.8 10.1 4.1 1.4 -1.9 5.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 8 9 5 1 0 0 0 0 0 0 3 10 36 DAYS WITH FREEZING MIN.<= 0 28 22 12 7 0 0 0 0 0 5 10 19 103 TEMPERATURE RECORDS LOWEST(C) -6.6 -6.8 -6.0 -4.2 5.6 10.2 8.5 9.0 5.0 -1.4 -7.4 -11.4 -11.4 DAY 13 12 22 6 1 4 11 29 21 11 30 31 MAXIMUM AIR TEMPERATURE (C) 7.9 9.7 9.0 18.0 25.2 30.0 30.3 30.3 26.5 13.5 13.2 5.9 18.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 17 16 23 3 0 0 0 59 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 1 1 TEMPERATURE RECORDS HIGHEST(C) 15.2 17.2 15.2 25.4 28.8 34.6 37.2 35.5 32.2 28.6 18.2 11.4 37.2 DAY 31 25 8 17 9 29 19 14 6 2 5 12 DIF. BETWEEN (MAX.-MIN.) (C) 10.3 11.5 8.7 14.3 14.8 16.5 15.7 15.5 16.4 9.4 11.8 7.8 12.7 MEAN DAILY TEMP. (MDT) (C) 2.7 4.0 4.7 10.8 17.8 21.8 22.4 22.5 18.3 8.8 7.3 2.0 11.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 35.2 59.4 72.9 3.2 0.0 0.0 0.0 170.7 HEATING DEG. DAYS(BASE 18 0C) 472.8 392.5 413.3 214.6 25.4 0.0 1.0 8.6 25.1 286.2 320.4 496.5 2656.4 DEWPOINT (MEAN C) -5.5 -3.7 -2.4 -1.2 7.8 6.4 7.7 8.9 5.7 2.2 -2.0 -2.9 1.7 MIXING RATIO (G/KG) 3.07 3.55 4.02 4.41 8.03 7.42 8.04 8.78 7.00 5.49 4.11 3.83 5.65 VAPOUR PRESSURE (HPA) 4.14 4.77 5.38 5.92 10.74 9.90 10.71 11.68 9.37 7.39 5.55 5.16 7.56 SATURATION DEF. (HPA) 3.29 3.38 3.25 7.87 10.67 18.44 18.10 16.44 12.54 5.02 6.06 2.42 8.96 RELATIVE HUMIDITY (MEAN %) 59 64 66 49 55 39 43 48 49 67 53 70 55 RELATIVE HUMIDITY (MAX. %) 77 86 87 73 78 61 65 70 72 84 74 86 76 RELATIVE HUMIDITY (MIN. %) 39 39 46 26 37 23 25 28 27 53 36 55 36 RELATIVE HUMIDITY (MEAN% 03UTC) 70 80 80 65 69 55 58 62 67 81 73 82 70 RELATIVE HUMIDITY (MEAN% 09UTC) 44 47 53 33 41 25 29 31 31 56 39 61 41 RELATIVE HUMIDITY (MEAN% 15UTC) 55 55 58 38 47 31 33 45 39 68 55 75 50 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 13.5 16.7 71.4 32.7 23.7 0.1 0.3 19.2 0.3 118.6 8.8 32.7 338.0 DAYS WITH PRECIPITATION >=10 0 0 2 1 0 0 0 1 0 6 0 1 11 DAYS WITH PRECIPITATION >= 5 1 1 7 2 1 0 0 2 0 6 1 2 23 DAYS WITH PRECIPITATION >= 1 4 3 10 5 6 0 0 3 0 9 2 10 52 DAYS WITH PRECIPITATION 8 15 19 10 12 4 3 4 4 14 8 16 117 GREATEST DAILY PRECIPITATION 5.2 5.6 17.0 16.0 8.0 0.0 0.2 12.2 0.1 26.0 5.0 10.3 26.0 DAY 26 26 4 18 5 ** 2 6 20 26 7 24 DAY WITH THUNDER STORM 0 1 5 7 9 4 4 4 3 5 0 0 42 DAYS WITH SNOW OR SLEET 6 9 9 2 0 0 0 0 0 0 2 6 34 DAYS WITH DUST 2 0 0 9 5 9 2 1 6 0 0 1 35 WIND DIRECTION (PREVAILING) 270 315 270 315 315 45 360 360 315 360 315 135 315 PREVAILING WIND SPEED(KNOTS) 8.1 5.3 7.4 5.8 5.8 11.8 11.4 12.2 4.6 11.3 4.8 6.8 5.4 PREVAILING WIND PERCENT 24.6 14.3 15.7 20.8 14.5 16.3 21.0 23.0 15.4 19.8 11.3 18.7 13.4 CALMS PERCENT OF WIND 28.2 42.4 24.2 25.0 32.3 21.8 23.0 23.8 30.8 27.6 34.7 36.8 28.7 NO. OF WIND OBSERVATION 248 224 248 240 248 239 248 248 240 192 150 155 2680 VECTOR WIND DIRECTION (MEAN) 272 254 267 264 274 42 36 23 24 37 302 226 350 VECTOR WIND MAGNITUDE(KNOTS) 3.2 0.7 1.0 3.1 1.0 2.7 3.8 4.0 2.2 3.4 0.8 1.5 1.1 WIND STEADINESES (MEAN %) 64.0 18.4 17.9 47.7 20.8 41.5 52.1 56.3 42.3 56.7 17.0 34.9 19.6 WIND SPEED (MEAN KNOTS) 5.0 3.8 5.6 6.5 4.8 6.5 7.3 7.1 5.2 6.0 4.7 4.3 5.6 FASTEST WIND DIRECTION 250 130 30 240 300 30 20 10 20 30 240 240 240 FASTEST WIND SPEED (KNOTS) 29 19 29 33 23 29 31 31 31 33 27 29 33 DAY 29 8 30 14 2 13 3 26 19 26 4 24 DAYS WITH SKY CLEAR (0-2)/8 14 5 6 11 9 22 27 24 27 12 18 5 180 DAYS WITH P.CLOUDY (3-6)/8 14 19 11 17 15 8 4 7 3 6 4 14 122 DAYS WITH CLOUDY (7-8)/8 3 4 14 2 7 0 0 0 0 13 8 12 63 DAYS WITH VISIBILITY =< 2 KM 3 4 6 1 0 0 0 0 1 4 0 2 21 DURATION OF SUNSHINE HOURS 218.7 163.3 153.7 248.5 239.5 303.3 344.9 318.0 270.7 170.5 194.9 120.8 2746.8 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 843.7 842.0 837.4 841.1 842.2 840.2 839.8 839.7 842.7 846.0 845.9 843.0 842.0 MAX. QFE PRESSURE IN HPA 851.6 850.2 845.7 848.1 847.0 845.7 844.6 847.1 848.0 852.4 855.0 854.3 855.0 DAY-HOUR 12- 6 1- 6 23- 6 22- 6 13- 6 28- 6 11- 3 8- 3 26- 6 16- 6 30- 6 1- 6 MIN. QFE PRESSURE IN HPA 834.1 832.1 826.0 831.3 836.4 834.9 834.1 833.8 838.3 836.6 836.7 834.4 826.0 DAY-HOUR 6-18 10-15 19-12 4-15 22-12 9-15 20-15 25-12 4-15 4-12 7- 9 24- 3 MEAN QNH PRESSURE IN HPA 1019.9 1017.9 1012.5 1016.9 1018.1 1015.7 1015.3 1015.2 1018.7 1022.5 1022.4 1019.1 1017.8 MAX. QNH PRESSURE IN HPA 1029.1 1027.4 1022.2 1025.0 1023.7 1022.2 1020.9 1023.8 1024.9 1030.0 1033.0 1032.2 1033.0 DAY-HOUR 12- 6 1- 6 23- 6 22- 6 13- 6 28- 6 11- 3 8- 3 26- 6 16- 6 30- 6 1- 6 MIN. QNH PRESSURE IN HPA 1008.7 1006.3 999.2 1005.4 1011.3 1009.6 1008.7 1008.3 1013.6 1011.6 1011.7 1009.0 999.2 DAY-HOUR 6-18 10-15 19-12 4-15 22-12 9-15 20-15 25-12 4-15 4-12 7- 9 24- 3 MEAN QFF PRESSURE IN HPA 1021.6 1018.8 1012.4 1012.8 1009.0 1003.9 1003.3 1003.4 1009.6 1018.8 ****** ****** ****** MAX. QFF PRESSURE IN HPA 1034.3 1029.9 1024.9 1023.8 1018.2 1011.0 1013.6 1012.9 1019.7 1028.8 ****** ****** ****** DAY-HOUR 12- 6 7- 3 22- 3 6- 3 13- 3 6- 3 11- 3 8- 3 20- 3 28-15 **-** **-** MIN. QFF PRESSURE IN HPA 1010.4 1008.2 997.2 1000.6 1000.6 997.5 995.0 995.2 1000.6 1003.9 ****** ****** ****** DAY-HOUR 2-12 10-15 19-12 19-12 22-21 17-12 20-15 24-12 6-12 4-12 **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 843.6 842.3 837.1 841.2 842.2 840.2 840.1 839.9 842.9 ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 850.8 848.6 843.8 846.9 845.8 843.6 844.4 846.3 847.2 ****** ****** ****** ****** DAY 12 1 23 22 1 28 11 8 26 ** ** ** MIN. QFE PRESSURE IN HPA 835.0 836.1 826.4 834.2 837.3 836.9 834.9 836.2 839.5 ****** ****** ****** ****** DAY 7 9 14 4 23 10 3 25 6 ** ** ** MEAN QNH PRESSURE IN HPA 1019.7 1018.2 1012.1 1016.9 1018.0 1015.7 1015.6 1015.4 1018.9 ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1028.1 1025.6 1020.0 1023.6 1022.3 1019.7 1020.7 1022.9 1023.9 ****** ****** ****** ****** DAY 12 1 23 22 1 28 11 8 26 ** ** ** MIN. QNH PRESSURE IN HPA 1009.7 1011.0 999.7 1008.8 1012.4 1011.9 1009.6 1011.1 1014.9 ****** ****** ****** ****** DAY 7 9 14 4 23 10 3 25 6 ** ** ** MEAN QFF PRESSURE IN HPA 1020.9 1018.4 1011.7 1012.8 1009.1 1003.8 1003.5 1003.2 1009.5 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1032.1 1028.7 1022.3 1021.1 1016.4 1009.3 1012.9 1011.0 1017.1 ****** ****** ****** ****** DAY 12 7 22 6 13 6 11 8 24 ** ** ** MIN. QFF PRESSURE IN HPA 1010.7 1010.2 1001.8 1004.3 1001.5 999.4 997.6 997.7 1001.9 ****** ****** ****** ****** DAY 3 9 14 4 23 10 3 25 6 ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 843.7 842.5 837.6 841.7 842.8 841.1 840.8 840.6 843.5 846.3 846.0 843.2 842.5 MAX. QFE PRESSURE IN HPA 851.0 849.5 844.9 847.6 846.8 845.2 844.6 847.1 847.7 851.7 854.2 853.8 854.2 DAY 12 1 23 22 1 28 11 8 26 16 30 1 MIN. QFE PRESSURE IN HPA 835.5 835.5 827.3 834.3 838.2 837.9 835.1 836.9 840.3 839.9 837.6 834.4 827.3 DAY 7 9 14 4 23 9 3 25 6 4 7 24 MEAN QNH PRESSURE IN HPA 1019.9 1018.4 1012.7 1017.5 1018.8 1016.8 1016.4 1016.2 1019.6 1022.9 1022.6 1019.3 1018.4 MAX. QNH PRESSURE IN HPA 1028.4 1026.6 1021.2 1024.4 1023.5 1021.6 1020.9 1023.8 1024.5 1029.2 1032.1 1031.6 1032.1 DAY 12 1 23 22 1 28 11 8 26 16 30 1 MIN. QNH PRESSURE IN HPA 1010.3 1010.3 1000.7 1008.9 1013.4 1013.1 1009.8 1011.9 1015.9 1015.4 1012.7 1009.0 1000.7 DAY 7 9 14 4 23 9 3 25 6 4 7 24 MEAN QFF PRESSURE IN HPA 1022.5 1019.9 1013.1 1014.2 1010.5 1006.0 1005.2 1005.5 1011.8 1021.1 1022.2 1022.0 1014.5 MAX. QFF PRESSURE IN HPA 1033.8 1029.9 1024.9 1023.8 1018.2 1011.0 1013.6 1012.9 1019.7 1028.5 1039.2 1038.7 1039.2 DAY 12 7 22 6 13 6 11 8 20 28 30 1 MIN. QFF PRESSURE IN HPA 1013.1 1010.1 1002.9 1004.9 1002.7 1001.4 998.5 999.7 1004.4 1009.9 1006.6 1008.9 998.5 DAY 7 9 14 19 23 10 3 25 6 4 7 24 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 844.7 843.1 838.3 842.0 843.1 841.3 840.9 840.9 844.0 847.1 846.9 844.0 843.0 MAX. QFE PRESSURE IN HPA 851.6 850.2 845.7 848.1 847.0 845.7 844.3 847.1 848.0 852.4 855.0 854.3 855.0 DAY 12 1 23 22 13 28 11 8 26 16 30 1 MIN. QFE PRESSURE IN HPA 838.1 835.5 829.1 834.0 838.8 838.0 835.0 837.1 840.9 840.2 838.1 835.0 829.1 DAY 6 10 14 19 23 9 3 25 6 4 7 24 MEAN QNH PRESSURE IN HPA 1021.0 1019.2 1013.5 1017.9 1019.2 1017.1 1016.6 1016.6 1020.2 1023.8 1023.5 1020.2 1019.1 MAX. QNH PRESSURE IN HPA 1029.1 1027.4 1022.2 1025.0 1023.7 1022.2 1020.5 1023.8 1024.9 1030.0 1033.0 1032.2 1033.0 DAY 12 1 23 22 13 28 11 8 26 16 30 1 MIN. QNH PRESSURE IN HPA 1013.3 1010.3 1002.8 1008.5 1014.1 1013.2 1009.7 1012.2 1016.6 1015.8 1013.3 1009.7 1002.8 DAY 6 10 14 19 23 9 3 25 6 4 7 24 MEAN QFF PRESSURE IN HPA 1023.4 1020.5 1013.6 1013.9 1009.9 1005.0 1004.6 1004.7 1011.0 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1034.3 1029.4 1024.2 1022.7 1016.2 1009.3 1011.8 1011.4 1018.8 ****** ****** ****** ****** DAY 12 7 23 6 13 6 11 8 24 ** ** ** MIN. QFF PRESSURE IN HPA 1015.7 1010.8 1004.1 1002.6 1003.0 1001.5 997.9 999.2 1003.8 ****** ****** ****** ****** DAY 3 9 14 19 23 18 20 25 6 ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 843.8 842.3 837.7 840.9 842.3 840.6 840.1 839.9 842.8 846.3 845.8 843.0 842.1 MAX. QFE PRESSURE IN HPA 850.7 849.1 844.9 847.5 846.1 844.7 843.4 846.3 847.0 851.8 854.3 853.0 854.3 DAY 12 1 23 22 13 28 11 8 25 16 30 1 MIN. QFE PRESSURE IN HPA 836.1 834.3 828.7 832.8 837.3 836.9 835.3 836.1 839.6 838.2 836.7 835.4 828.7 DAY 6 10 14 19 22 9 3 25 6 4 7 30 MEAN QNH PRESSURE IN HPA 1020.0 1018.3 1012.8 1016.6 1018.3 1016.2 1015.7 1015.4 1018.8 1022.9 1022.3 1019.0 1018.0 MAX. QNH PRESSURE IN HPA 1028.0 1026.1 1021.2 1024.3 1022.6 1021.0 1019.5 1022.9 1023.7 1029.3 1032.2 1030.7 1032.2 DAY 12 1 23 22 13 28 11 8 25 16 30 1 MIN. QNH PRESSURE IN HPA 1011.0 1008.9 1002.3 1007.1 1012.4 1011.9 1010.1 1011.0 1015.1 1013.4 1011.7 1010.2 1002.3 DAY 6 10 14 19 22 9 3 25 6 4 7 30 MEAN QFF PRESSURE IN HPA 1021.2 1018.6 1012.4 1012.1 1008.5 1004.1 1003.3 1003.0 1009.0 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1031.7 1027.5 1022.5 1021.6 1014.7 1009.1 1009.4 1010.0 1017.5 ****** ****** ****** ****** DAY 12 12 23 6 13 6 10 8 24 ** ** ** MIN. QFF PRESSURE IN HPA 1012.5 1010.7 1000.9 1000.7 1001.5 1001.3 997.0 998.0 1001.7 ****** ****** ****** ****** DAY 2 10 19 19 23 18 20 18 6 ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 842.9 841.0 836.6 840.1 841.3 839.2 838.7 838.4 841.2 845.5 845.0 842.3 841.0 MAX. QFE PRESSURE IN HPA 849.8 848.0 843.4 846.0 845.6 842.8 842.5 844.8 845.5 850.3 853.4 852.1 853.4 DAY 12 1 23 22 12 28 10 8 25 16 30 1 MIN. QFE PRESSURE IN HPA 834.8 832.8 826.0 831.6 836.4 835.2 834.4 833.8 838.5 836.6 836.9 834.8 826.0 DAY 6 10 19 4 22 9 3 25 6 4 7 23 MEAN QNH PRESSURE IN HPA 1018.9 1016.7 1011.5 1015.7 1017.0 1014.6 1014.0 1013.6 1016.9 1021.9 1021.4 1018.2 1016.7 MAX. QNH PRESSURE IN HPA 1027.0 1024.9 1019.5 1022.5 1022.1 1018.8 1018.5 1021.1 1021.9 1027.5 1031.2 1029.6 1031.2 DAY 12 1 23 22 12 28 10 8 25 16 30 1 MIN. QNH PRESSURE IN HPA 1009.5 1007.1 999.2 1005.7 1011.3 1009.9 1009.0 1008.3 1013.8 1011.6 1011.9 1009.5 999.2 DAY 6 10 19 4 22 9 3 25 6 4 7 23 MEAN QFF PRESSURE IN HPA 1019.9 1017.0 1011.1 1011.4 1007.9 1002.6 1001.9 1001.4 1007.5 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1030.0 1025.9 1020.4 1018.8 1014.2 1007.6 1009.4 1009.3 1014.1 ****** ****** ****** ****** DAY 12 6 23 22 12 6 10 7 24 ** ** ** MIN. QFF PRESSURE IN HPA 1010.4 1009.1 997.2 1000.6 1001.2 997.5 995.5 995.2 1000.6 ****** ****** ****** ****** DAY 2 10 19 19 23 17 20 24 6 ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 843.4 841.2 836.9 840.3 841.4 838.9 838.3 838.5 841.3 845.8 845.6 842.8 841.2 MAX. QFE PRESSURE IN HPA 849.8 848.3 843.5 845.2 846.6 842.2 842.4 844.7 846.0 850.8 853.9 852.8 853.9 DAY 17 1 23 22 12 28 10 7 25 16 30 1 MIN. QFE PRESSURE IN HPA 834.7 832.1 827.8 831.3 836.6 834.9 834.1 834.1 838.3 838.2 837.5 834.5 827.8 DAY 6 10 19 4 22 9 20 25 4 4 7 23 MEAN QNH PRESSURE IN HPA 1019.6 1016.9 1011.9 1015.9 1017.1 1014.2 1013.6 1013.7 1017.1 1022.3 1022.1 1018.8 1016.9 MAX. QNH PRESSURE IN HPA 1027.0 1025.2 1019.6 1021.6 1023.2 1018.1 1018.3 1021.0 1022.5 1028.1 1031.7 1030.5 1031.7 DAY 17 1 23 22 12 28 10 7 25 16 30 1 MIN. QNH PRESSURE IN HPA 1009.4 1006.3 1001.3 1005.4 1011.6 1009.6 1008.7 1008.7 1013.6 1013.4 1012.6 1009.1 1001.3 DAY 6 10 19 4 22 9 20 25 4 4 7 23 MEAN QFF PRESSURE IN HPA 1022.0 1018.4 1012.3 1012.3 1008.7 1003.2 1002.2 1002.9 1009.2 1020.6 1021.8 1021.4 1012.9 MAX. QFF PRESSURE IN HPA 1031.5 1028.0 1022.7 1019.7 1015.5 1008.0 1009.8 1010.7 1016.2 1028.8 1039.2 1037.0 1039.2 DAY 12 6 22 1 12 6 10 6 25 28 30 1 MIN. QFF PRESSURE IN HPA 1013.2 1008.2 1000.3 1002.1 1001.5 998.3 995.0 996.4 1003.0 1006.8 1008.7 1008.4 995.0 DAY 6 10 19 19 23 9 20 18 1 3 7 23 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 843.9 842.0 837.8 841.5 842.5 840.0 839.7 839.8 842.9 ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 850.3 848.7 845.0 846.1 846.5 843.5 844.1 846.4 847.1 ****** ****** ****** ****** DAY 12 1 23 30 12 28 10 7 25 ** ** ** MIN. QFE PRESSURE IN HPA 834.1 834.4 828.0 832.9 837.2 836.2 836.3 835.3 839.5 ****** ****** ****** ****** DAY 6 10 13 4 22 9 2 24 1 ** ** ** MEAN QNH PRESSURE IN HPA 1020.1 1017.8 1012.9 1017.3 1018.5 1015.6 1015.2 1015.3 1018.9 ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1027.5 1025.7 1021.4 1022.6 1023.1 1019.6 1020.3 1023.0 1023.8 ****** ****** ****** ****** DAY 12 1 23 30 12 28 10 7 25 ** ** ** MIN. QNH PRESSURE IN HPA 1008.7 1009.0 1001.5 1007.3 1012.3 1011.1 1011.2 1010.1 1014.9 ****** ****** ****** ****** DAY 6 10 13 4 22 9 2 24 1 ** ** ** MEAN QFF PRESSURE IN HPA 1022.3 1019.2 1013.0 1013.2 1009.2 1003.5 1003.1 1003.5 1009.6 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1032.8 1029.7 1022.6 1020.8 1015.6 1008.4 1012.0 1010.8 1018.0 ****** ****** ****** ****** DAY 12 6 22 6 18 5 10 7 23 ** ** ** MIN. QFF PRESSURE IN HPA 1011.7 1009.4 1002.1 1004.2 1002.0 999.6 997.4 996.5 1003.5 ****** ****** ****** ****** DAY 6 25 13 19 22 9 19 24 5 ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 843.8 842.1 837.7 841.6 842.4 840.3 840.0 840.1 843.1 ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 850.4 848.2 844.6 846.9 846.5 843.6 844.4 846.8 847.2 ****** ****** ****** ****** DAY 11 1 23 21 12 27 10 7 25 ** ** ** MIN. QFE PRESSURE IN HPA 834.1 836.5 827.5 833.9 837.1 836.5 835.2 835.8 839.7 ****** ****** ****** ****** DAY 6 10 13 4 22 9 2 24 1 ** ** ** MEAN QNH PRESSURE IN HPA 1020.0 1018.0 1012.8 1017.4 1018.3 1015.9 1015.5 1015.6 1019.1 ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1027.7 1025.1 1020.9 1023.6 1023.1 1019.7 1020.7 1023.5 1023.9 ****** ****** ****** ****** DAY 11 1 23 21 12 27 10 7 25 ** ** ** MIN. QNH PRESSURE IN HPA 1008.7 1011.4 1000.9 1008.4 1012.2 1011.4 1009.9 1010.6 1015.2 ****** ****** ****** ****** DAY 6 10 13 4 22 9 2 24 1 ** ** ** MEAN QFF PRESSURE IN HPA 1021.1 1018.3 1012.5 1012.7 1008.6 1003.6 1003.0 1003.1 1009.4 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1031.5 1029.5 1022.0 1021.2 1015.4 1008.6 1011.5 1010.4 1018.4 ****** ****** ****** ****** DAY 11 6 22 21 12 5 10 7 23 ** ** ** MIN. QFF PRESSURE IN HPA 1010.5 1010.7 1002.4 1003.5 1000.6 999.7 997.7 997.0 1002.1 ****** ****** ****** ****** DAY 6 4 13 25 22 9 19 24 5 ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.0 -0.6 5.5 10.1 16.8 21.2 21.7 21.3 18.4 13.1 7.0 1.9 11.3 MINIMUN AIR TEMPERATURE (C) -5.2 -5.3 0.1 4.4 8.6 13.2 15.4 14.8 10.6 6.3 1.3 -3.1 5.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 19 16 4 2 0 0 0 0 0 0 3 9 53 DAYS WITH FREEZING MIN.<= 0 30 25 15 8 0 0 0 0 0 0 14 24 116 TEMPERATURE RECORDS LOWEST(C) -12.0 -16.2 -5.0 -5.0 3.0 10.6 8.4 8.8 6.6 2.0 -5.8 -14.6 -16.2 DAY 3 7 6 6 7 16 28 26 29 23 15 29 MAXIMUM AIR TEMPERATURE (C) 2.1 2.7 11.8 16.8 23.9 28.9 29.2 29.0 26.9 20.8 14.0 7.4 17.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 9 14 11 8 0 0 0 42 DAYS WITH MAXIMUM TEMP. <= 0 5 11 0 0 0 0 0 0 0 0 0 3 19 TEMPERATURE RECORDS HIGHEST(C) 5.2 11.8 18.7 23.8 29.4 34.8 36.6 35.8 32.6 25.4 21.0 15.6 36.6 DAY 6 1 20 18 27 13 31 1 10 6 8 5 DIF. BETWEEN (MAX.-MIN.) (C) 7.3 8.0 11.7 12.4 15.3 15.7 13.8 14.2 16.3 14.5 12.7 10.5 12.7 MEAN DAILY TEMP. (MDT) (C) -1.6 -1.3 5.9 10.6 16.2 21.0 22.3 21.9 18.8 13.5 7.7 2.2 11.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 25.5 55.2 48.8 5.6 0.0 0.0 0.0 135.2 HEATING DEG. DAYS(BASE 18 0C) 606.3 559.8 375.0 221.8 65.8 0.0 3.4 1.7 22.9 134.0 310.1 491.2 2792.1 DEWPOINT (MEAN C) -5.5 -5.2 -3.6 2.0 2.7 4.0 10.7 9.3 4.7 1.7 -3.1 -5.3 1.0 MIXING RATIO (G/KG) 3.10 3.21 3.63 5.67 5.70 6.26 9.84 9.03 6.57 5.36 4.02 3.20 5.47 VAPOUR PRESSURE (HPA) 4.17 4.30 4.85 7.59 7.63 8.34 13.04 11.99 8.80 7.21 5.41 4.31 7.30 SATURATION DEF. (HPA) 1.65 1.87 4.59 5.55 12.60 18.14 14.21 14.53 13.76 8.67 5.39 3.26 8.69 RELATIVE HUMIDITY (MEAN %) 73 74 57 61 44 36 53 51 45 52 53 63 55 RELATIVE HUMIDITY (MAX. %) 86 89 82 84 69 57 73 72 65 74 72 80 75 RELATIVE HUMIDITY (MIN. %) 60 62 34 39 24 19 34 31 25 32 31 42 36 RELATIVE HUMIDITY (MEAN% 03UTC) 82 84 77 78 62 52 68 68 61 69 65 72 70 RELATIVE HUMIDITY (MEAN% 09UTC) 65 65 42 45 29 23 36 34 27 34 36 47 40 RELATIVE HUMIDITY (MEAN% 15UTC) 79 77 47 52 34 28 47 46 40 44 46 62 50 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 23.8 35.9 36.5 68.8 10.4 4.5 7.7 3.7 0.0 16.2 21.6 53.9 283.0 DAYS WITH PRECIPITATION >=10 0 1 1 2 0 0 0 0 0 0 0 2 6 DAYS WITH PRECIPITATION >= 5 3 3 2 7 1 0 1 0 0 1 2 3 23 DAYS WITH PRECIPITATION >= 1 5 9 8 11 2 2 2 1 0 5 5 7 57 DAYS WITH PRECIPITATION 15 13 14 14 6 7 4 4 2 10 12 10 111 GREATEST DAILY PRECIPITATION 9.0 10.0 15.1 14.1 9.1 3.0 5.0 3.0 0.0 7.0 9.2 26.4 26.4 DAY 7 9 8 12 19 30 9 24 ** 16 20 17 DAY WITH THUNDER STORM 0 0 0 10 1 6 4 3 0 4 0 0 28 DAYS WITH SNOW OR SLEET 13 10 7 0 0 0 0 0 0 0 0 8 38 DAYS WITH DUST 0 0 3 1 3 2 1 1 1 0 3 0 15 WIND DIRECTION (PREVAILING) 315 315 270 315 270 315 45 360 360 135 315 315 315 PREVAILING WIND SPEED(KNOTS) 8.5 8.3 7.2 5.2 7.0 4.6 11.3 12.6 11.6 7.3 5.2 5.8 5.8 PREVAILING WIND PERCENT 21.3 32.6 22.2 16.0 18.1 20.8 27.0 30.6 15.8 13.7 16.3 19.4 15.2 CALMS PERCENT OF WIND 29.7 25.7 28.2 29.5 28.2 20.8 25.0 24.2 35.4 44.0 38.8 46.4 31.5 NO. OF WIND OBSERVATION 155 175 248 237 248 240 248 248 240 248 240 248 2775 VECTOR WIND DIRECTION (MEAN) 297 295 263 355 270 319 24 27 21 42 241 268 337 VECTOR WIND MAGNITUDE(KNOTS) 2.8 2.8 2.3 1.5 1.8 1.8 6.5 5.9 2.2 0.7 2.1 1.9 1.6 WIND STEADINESES (MEAN %) 50.0 49.1 44.2 28.3 35.3 33.3 81.3 72.0 38.6 17.5 46.7 51.4 29.1 WIND SPEED (MEAN KNOTS) 5.6 5.7 5.2 5.3 5.1 5.4 8.0 8.2 5.7 4.0 4.5 3.7 5.5 FASTEST WIND DIRECTION 30 310 190 150 280 10 10 20 360 10 280 220 10 FASTEST WIND SPEED (KNOTS) 27 17 19 23 23 25 31 31 21 19 21 19 31 DAY 18 26 4 17 25 28 25 5 20 1 28 12 DAYS WITH SKY CLEAR (0-2)/8 7 11 8 6 22 22 24 22 27 18 11 12 190 DAYS WITH P.CLOUDY (3-6)/8 12 10 15 11 8 8 7 9 3 8 11 12 114 DAYS WITH CLOUDY (7-8)/8 12 8 8 13 1 0 0 0 0 5 8 7 62 DAYS WITH VISIBILITY =< 2 KM 5 4 2 0 0 0 0 0 0 0 1 4 16 DURATION OF SUNSHINE HOURS 111.0 162.1 223.7 178.4 333.3 328.1 350.4 329.6 300.4 233.7 186.8 155.4 2892.9 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.8 840.9 837.9 841.3 840.7 838.4 837.3 838.5 842.1 845.0 843.9 841.6 840.8 MAX. QFE PRESSURE IN HPA 850.5 850.0 847.0 849.9 846.4 843.9 843.4 845.1 847.4 851.1 851.8 848.4 851.8 DAY-HOUR 10- 6 6- 6 17- 6 9- 6 17- 6 8- 6 31- 6 21- 6 21- 6 16-21 5-18 21-18 MIN. QFE PRESSURE IN HPA 833.7 830.9 826.7 834.5 834.2 832.4 832.2 832.7 837.6 837.3 835.2 825.2 825.2 DAY-HOUR 29- 3 2- 3 4-15 30-15 1-12 23-15 15-12 29-15 4-15 30-15 28- 9 27- 3 MEAN QNH PRESSURE IN HPA 1017.6 1016.6 1013.0 1017.1 1016.3 1013.6 1012.4 1013.8 1018.0 1021.4 1020.1 1017.4 1016.4 MAX. QNH PRESSURE IN HPA 1027.8 1027.2 1023.7 1027.1 1023.0 1020.1 1019.5 1021.5 1024.2 1028.5 1029.3 1025.3 1029.3 DAY-HOUR 10- 6 6- 6 17- 6 9- 6 17- 6 8- 6 31- 6 21- 6 21- 6 16-21 5-18 21-18 MIN. QNH PRESSURE IN HPA 1008.2 1004.9 1000.0 1009.1 1008.8 1006.7 1006.4 1007.0 1012.7 1012.4 1009.9 998.3 998.3 DAY-HOUR 29- 3 2- 3 4-15 30-15 1-12 23-15 15-12 29-15 4-15 30-15 28- 9 27- 3 MEAN QFF PRESSURE IN HPA ****** ****** 1012.2 1013.3 1008.1 1002.5 1000.7 1002.3 1008.7 1015.7 1018.4 1019.3 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1024.6 1027.2 1020.4 1009.2 1009.9 1011.8 1019.2 1026.0 1029.4 1035.9 ****** DAY-HOUR **-** **-** 17- 3 3- 3 5- 6 8- 3 27- 6 21- 3 30- 3 16- 9 15-18 30- 6 MIN. QFF PRESSURE IN HPA ****** ****** 998.3 1001.6 999.2 995.6 991.7 994.7 1001.6 1006.1 1006.9 1001.8 ****** DAY-HOUR **-** **-** 4-18 30-21 27-21 15-15 15-12 29-12 17-12 20-12 28- 9 27- 3 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 837.6 841.0 840.7 838.8 837.4 838.7 842.1 845.0 844.0 841.6 ****** MAX. QFE PRESSURE IN HPA ****** ****** 846.0 848.4 846.0 842.9 841.9 844.0 846.1 850.0 850.8 846.8 ****** DAY ** ** 17 9 17 8 31 21 15 17 6 22 MIN. QFE PRESSURE IN HPA ****** ****** 828.9 835.3 834.5 834.2 834.9 834.8 838.2 839.6 836.7 826.5 ****** DAY ** ** 5 30 1 24 1 30 4 31 20 27 MEAN QNH PRESSURE IN HPA ****** ****** 1012.8 1016.7 1016.3 1014.1 1012.5 1014.0 1018.0 1021.4 1020.2 1017.3 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1022.5 1025.3 1022.5 1018.9 1017.7 1020.2 1022.6 1027.2 1028.1 1023.5 ****** DAY ** ** 17 9 17 8 31 21 15 17 6 22 MIN. QNH PRESSURE IN HPA ****** ****** 1002.6 1010.1 1009.1 1008.8 1009.6 1009.5 1013.4 1015.1 1011.7 999.8 ****** DAY ** ** 5 30 1 24 1 30 4 31 20 27 MEAN QFF PRESSURE IN HPA ****** ****** 1011.6 1012.5 1007.9 1002.9 1000.6 1001.9 1008.3 1015.2 1018.0 1018.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1022.1 1025.6 1018.1 1007.2 1008.6 1008.8 1017.2 1024.1 1026.8 1033.1 ****** DAY ** ** 17 9 6 1 27 21 30 16 15 30 MIN. QFF PRESSURE IN HPA ****** ****** 1000.1 1003.7 999.3 997.5 996.6 995.9 1002.4 1008.4 1008.0 1003.4 ****** DAY ** ** 21 23 28 24 15 30 9 31 20 27 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 841.6 840.9 838.1 841.6 841.3 839.4 838.2 839.5 842.9 845.4 844.0 841.6 841.2 MAX. QFE PRESSURE IN HPA 849.9 848.8 846.2 848.4 846.2 843.5 843.2 844.7 846.7 849.9 851.2 847.2 851.2 DAY 3 7 17 9 17 8 31 21 14 28 6 3 MIN. QFE PRESSURE IN HPA 833.7 830.9 831.4 835.3 834.7 834.9 835.1 835.7 838.8 840.6 835.9 825.2 825.2 DAY 29 2 9 30 1 24 8 30 4 30 20 27 MEAN QNH PRESSURE IN HPA 1017.4 1016.5 1013.3 1017.5 1017.0 1014.8 1013.4 1014.9 1018.9 1021.8 1020.2 1017.4 1016.9 MAX. QNH PRESSURE IN HPA 1027.1 1025.8 1022.8 1025.3 1022.8 1019.6 1019.3 1021.0 1023.3 1027.1 1028.6 1023.9 1028.6 DAY 3 7 17 9 17 8 31 21 14 28 6 3 MIN. QNH PRESSURE IN HPA 1008.2 1004.9 1005.5 1010.1 1009.4 1009.6 1009.8 1010.5 1014.1 1016.2 1010.8 998.3 998.3 DAY 29 2 9 30 1 24 8 30 4 30 20 27 MEAN QFF PRESSURE IN HPA 1022.5 1021.6 1013.1 1014.3 1009.6 1004.4 1002.7 1004.5 1010.9 1017.5 1019.3 1020.0 1013.3 MAX. QFF PRESSURE IN HPA 1037.2 1038.7 1024.6 1027.2 1020.2 1009.2 1009.7 1011.8 1019.2 1025.2 1028.7 1035.3 1038.7 DAY 10 7 17 3 5 8 27 21 30 16 15 30 MIN. QFF PRESSURE IN HPA 1010.0 1003.6 1001.7 1004.5 1000.9 998.6 997.7 999.3 1005.3 1010.4 1007.4 1001.8 997.7 DAY 29 2 21 30 28 24 15 30 9 20 20 27 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.4 841.7 838.8 842.5 841.7 839.4 838.4 839.7 843.4 846.1 844.9 842.5 841.8 MAX. QFE PRESSURE IN HPA 850.5 850.0 847.0 849.9 846.4 843.9 843.4 845.1 847.4 851.0 851.8 848.3 851.8 DAY 10 6 17 9 17 8 31 21 21 28 6 3 MIN. QFE PRESSURE IN HPA 835.7 831.3 832.4 836.4 836.1 834.6 835.1 836.0 839.6 840.6 837.8 826.8 826.8 DAY 29 2 3 30 1 24 8 30 4 30 28 27 MEAN QNH PRESSURE IN HPA 1018.4 1017.5 1014.1 1018.4 1017.5 1014.9 1013.6 1015.2 1019.5 1022.7 1021.2 1018.5 1017.6 MAX. QNH PRESSURE IN HPA 1027.8 1027.2 1023.7 1027.1 1023.0 1020.1 1019.5 1021.5 1024.2 1028.4 1029.3 1025.2 1029.3 DAY 10 6 17 9 17 8 31 21 21 28 6 3 MIN. QNH PRESSURE IN HPA 1010.5 1005.4 1006.7 1011.3 1011.0 1009.2 1009.8 1010.9 1015.1 1016.2 1013.0 1000.1 1000.1 DAY 29 2 3 30 1 24 8 30 4 30 28 27 MEAN QFF PRESSURE IN HPA ****** ****** 1013.4 1014.8 1009.2 1003.6 1002.0 1003.9 1010.1 1016.9 1020.0 1020.8 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1023.4 1027.2 1020.4 1008.2 1009.9 1011.2 1017.5 1025.9 1028.9 1035.9 ****** DAY ** ** 17 9 5 8 27 21 30 16 15 30 MIN. QFF PRESSURE IN HPA ****** ****** 1003.4 1006.3 1002.1 998.1 996.1 998.4 1005.4 1009.6 1010.9 1004.9 ****** DAY ** ** 27 25 28 17 15 30 3 20 11 27 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.9 841.2 838.1 841.6 840.8 838.4 837.5 838.7 842.2 845.1 843.8 841.4 840.9 MAX. QFE PRESSURE IN HPA 849.9 849.4 845.6 849.6 845.7 843.3 842.0 843.4 846.2 851.0 850.3 847.4 851.0 DAY 3 6 17 8 17 12 31 21 14 16 6 21 MIN. QFE PRESSURE IN HPA 835.8 831.0 830.0 835.8 835.5 833.3 834.1 834.9 838.5 839.1 835.2 826.2 826.2 DAY 28 2 4 30 1 24 8 29 3 30 28 27 MEAN QNH PRESSURE IN HPA 1017.8 1016.9 1013.3 1017.4 1016.5 1013.7 1012.6 1014.0 1018.1 1021.4 1019.9 1017.2 1016.6 MAX. QNH PRESSURE IN HPA 1027.1 1026.5 1022.1 1026.7 1022.2 1019.4 1017.9 1019.5 1022.8 1028.4 1027.5 1024.2 1028.4 DAY 3 6 17 8 17 12 31 21 14 16 6 21 MIN. QNH PRESSURE IN HPA 1010.6 1005.0 1003.9 1010.6 1010.3 1007.7 1008.7 1009.6 1013.8 1014.5 1009.9 999.4 999.4 DAY 28 2 4 30 1 24 8 29 3 30 28 27 MEAN QFF PRESSURE IN HPA ****** ****** 1012.2 1013.1 1007.8 1002.1 1000.4 1001.9 1008.0 1014.9 1017.5 1018.3 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1021.7 1025.8 1019.4 1007.4 1008.2 1007.8 1015.7 1026.0 1026.9 1032.0 ****** DAY ** ** 17 8 5 27 27 21 30 16 15 29 MIN. QFF PRESSURE IN HPA ****** ****** 1001.1 1004.5 1000.9 996.3 994.0 996.8 1002.6 1006.6 1006.9 1003.8 ****** DAY ** ** 4 30 28 24 15 29 12 20 28 27 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 841.2 840.4 837.0 840.5 839.7 837.3 836.2 837.3 840.9 844.0 842.9 840.9 839.8 MAX. QFE PRESSURE IN HPA 849.1 848.7 843.7 848.6 844.1 842.2 840.4 841.9 845.2 850.1 849.0 847.8 850.1 DAY 3 6 17 8 5 12 30 21 30 16 6 21 MIN. QFE PRESSURE IN HPA 835.6 831.6 827.3 834.9 834.2 832.8 832.2 833.3 837.6 837.7 835.9 827.2 827.2 DAY 28 1 4 30 1 24 15 29 11 30 28 27 MEAN QNH PRESSURE IN HPA 1017.0 1015.9 1012.0 1016.1 1015.2 1012.3 1011.2 1012.3 1016.6 1020.2 1018.9 1016.6 1015.4 MAX. QNH PRESSURE IN HPA 1026.1 1025.7 1019.8 1025.6 1020.3 1018.1 1016.0 1017.7 1021.6 1027.3 1026.0 1024.6 1027.3 DAY 3 6 17 8 5 12 30 21 30 16 6 21 MIN. QNH PRESSURE IN HPA 1010.4 1005.7 1000.7 1009.6 1008.8 1007.1 1006.4 1007.7 1012.7 1012.9 1010.8 1000.6 1000.6 DAY 28 1 4 30 1 24 15 29 11 30 28 27 MEAN QFF PRESSURE IN HPA ****** ****** 1010.8 1012.1 1006.8 1001.3 999.0 1000.4 1006.8 1014.0 1016.7 1017.9 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1018.9 1025.0 1018.5 1005.9 1007.2 1007.1 1016.4 1024.7 1024.2 1030.9 ****** DAY ** ** 16 8 5 27 27 5 30 16 15 29 MIN. QFF PRESSURE IN HPA ****** ****** 999.2 1002.6 1000.1 995.9 991.7 994.7 1001.6 1006.1 1007.9 1004.9 ****** DAY ** ** 4 30 28 24 15 29 17 20 8 26 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.7 840.7 837.2 840.6 839.7 837.1 836.1 837.1 840.9 844.3 843.6 841.4 840.0 MAX. QFE PRESSURE IN HPA 849.5 849.6 844.4 848.8 844.1 842.2 840.2 841.5 846.0 850.8 851.1 848.3 851.1 DAY 3 6 16 8 5 7 30 21 30 16 5 21 MIN. QFE PRESSURE IN HPA 834.8 831.6 826.7 834.5 834.7 832.4 832.4 832.7 837.6 837.3 837.3 828.6 826.7 DAY 28 1 4 30 1 23 15 29 4 30 19 26 MEAN QNH PRESSURE IN HPA 1017.6 1016.3 1012.3 1016.2 1015.1 1012.1 1010.9 1012.1 1016.6 1020.6 1019.7 1017.2 1015.6 MAX. QNH PRESSURE IN HPA 1026.6 1026.7 1020.7 1025.8 1020.3 1018.1 1015.8 1017.3 1022.5 1028.1 1028.5 1025.2 1028.5 DAY 3 6 16 8 5 7 30 21 30 16 5 21 MIN. QNH PRESSURE IN HPA 1009.5 1005.7 1000.0 1009.1 1009.4 1006.7 1006.7 1007.0 1012.7 1012.4 1012.4 1002.2 1000.0 DAY 28 1 4 30 1 23 15 29 4 30 19 26 MEAN QFF PRESSURE IN HPA 1022.5 1021.2 1012.1 1013.1 1007.6 1001.7 999.9 1001.7 1008.5 1016.2 1018.9 1019.8 1011.9 MAX. QFF PRESSURE IN HPA 1036.1 1037.6 1021.7 1027.0 1019.2 1008.1 1007.4 1008.5 1018.9 1025.8 1028.0 1034.9 1037.6 DAY 9 6 16 8 5 7 27 5 30 16 15 29 MIN. QFF PRESSURE IN HPA 1010.6 1004.1 998.6 1002.6 1000.9 995.6 995.5 995.7 1002.6 1008.0 1009.7 1005.9 995.5 DAY 28 1 4 30 24 15 15 29 8 30 8 26 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 838.1 841.5 840.8 838.2 837.5 838.5 842.2 845.2 844.2 841.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** 845.3 849.0 845.3 842.7 841.5 843.0 847.0 851.0 851.8 848.4 ****** DAY ** ** 16 8 16 12 30 20 30 16 5 21 MIN. QFE PRESSURE IN HPA ****** ****** 827.4 834.5 837.0 833.3 834.8 833.9 838.3 838.5 837.2 828.9 ****** DAY ** ** 4 30 1 23 16 29 1 30 19 26 MEAN QNH PRESSURE IN HPA ****** ****** 1013.3 1017.3 1016.5 1013.5 1012.6 1013.8 1018.1 1021.6 1020.5 1017.8 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1021.7 1026.0 1021.7 1018.7 1017.3 1019.0 1023.7 1028.4 1029.3 1025.3 ****** DAY ** ** 16 8 16 12 30 20 30 16 5 21 MIN. QNH PRESSURE IN HPA ****** ****** 1000.8 1009.1 1012.0 1007.7 1009.5 1008.4 1013.6 1013.8 1012.3 1002.6 ****** DAY ** ** 4 30 1 23 16 29 1 30 19 26 MEAN QFF PRESSURE IN HPA ****** ****** 1012.6 1013.6 1008.2 1002.2 1000.9 1002.5 1008.7 1015.9 1019.2 1020.1 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1021.8 1027.1 1019.4 1007.0 1008.7 1009.4 1017.8 1025.2 1029.4 1035.6 ****** DAY ** ** 16 8 5 27 26 5 30 16 15 29 MIN. QFF PRESSURE IN HPA ****** ****** 998.3 1002.9 999.6 995.9 996.4 995.0 1002.6 1007.0 1010.0 1007.4 ****** DAY ** ** 4 30 27 22 14 29 8 30 19 26 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 838.2 841.3 841.1 838.6 837.6 838.8 842.4 845.2 844.1 841.8 ****** MAX. QFE PRESSURE IN HPA ****** ****** 846.2 848.9 846.1 842.9 841.9 844.2 847.0 851.1 851.3 847.8 ****** DAY ** ** 16 8 16 7 30 20 30 16 5 21 MIN. QFE PRESSURE IN HPA ****** ****** 827.5 834.8 837.2 833.8 835.1 834.6 838.1 839.1 836.3 828.4 ****** DAY ** ** 4 30 27 23 8 29 1 30 19 26 MEAN QNH PRESSURE IN HPA ****** ****** 1013.4 1017.1 1016.8 1013.9 1012.7 1014.1 1018.3 1021.6 1020.3 1017.6 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1022.8 1025.9 1022.6 1018.9 1017.7 1020.4 1023.7 1028.5 1028.7 1024.6 ****** DAY ** ** 16 8 16 7 30 20 30 16 5 21 MIN. QNH PRESSURE IN HPA ****** ****** 1000.9 1009.5 1012.3 1008.3 1009.8 1009.2 1013.3 1014.5 1011.2 1002.0 ****** DAY ** ** 4 30 27 23 8 29 1 30 19 26 MEAN QFF PRESSURE IN HPA ****** ****** 1012.4 1012.6 1008.1 1002.3 1000.4 1002.0 1008.2 1015.0 1018.0 1018.8 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1022.7 1026.4 1017.7 1007.0 1008.9 1009.3 1017.4 1025.0 1028.3 1033.5 ****** DAY ** ** 16 8 5 26 26 20 30 16 14 29 MIN. QFF PRESSURE IN HPA ****** ****** 998.7 1001.6 999.2 996.2 996.6 996.0 1001.7 1007.2 1008.7 1005.2 ****** DAY ** ** 4 30 27 22 14 29 11 30 19 25 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -6.2 -5.7 4.6 12.5 16.4 22.4 24.7 24.0 18.7 14.2 8.1 3.0 11.4 MINIMUN AIR TEMPERATURE (C) -10.5 -10.7 0.2 5.5 8.7 13.4 16.3 16.4 10.4 6.9 3.0 -1.1 4.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 2 0 0 0 0 2 DAYS WITH MINIMUM TEMP. <=-4 30 27 2 0 0 0 0 0 0 0 1 3 63 DAYS WITH FREEZING MIN.<= 0 31 28 14 0 0 0 0 0 0 1 3 23 100 TEMPERATURE RECORDS LOWEST(C) -18.2 -19.1 -6.0 1.4 1.6 9.8 13.4 11.6 3.6 0.0 -4.4 -4.8 -19.1 DAY 30 1 31 2 1 12 31 19 20 23 22 31 MAXIMUM AIR TEMPERATURE (C) -1.4 0.0 10.1 19.8 23.9 30.7 32.8 31.8 27.6 22.2 13.9 8.1 18.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 4 20 29 24 12 0 0 0 89 DAYS WITH MAXIMUM TEMP. <= 0 21 12 0 0 0 0 0 0 0 0 0 0 33 TEMPERATURE RECORDS HIGHEST(C) 4.8 7.8 18.2 24.6 30.8 36.0 37.6 36.2 34.8 29.5 20.0 13.3 37.6 DAY 1 28 25 15 25 30 13 9 2 8 29 25 DIF. BETWEEN (MAX.-MIN.) (C) 9.1 10.7 9.9 14.3 15.2 17.3 16.5 15.4 17.2 15.3 10.9 9.2 13.4 MEAN DAILY TEMP. (MDT) (C) -6.0 -5.3 5.2 12.7 16.3 22.1 24.6 24.1 19.0 14.5 8.5 3.5 11.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 3.0 48.8 110.5 101.1 30.9 0.0 0.0 0.0 294.3 HEATING DEG. DAYS(BASE 18 0C) 743.3 653.2 397.8 160.5 76.2 2.1 0.0 0.0 44.4 117.1 286.0 448.4 2929.0 DEWPOINT (MEAN C) -10.8 -11.4 -0.9 0.7 2.9 3.8 8.2 8.0 2.2 0.8 -0.5 -3.3 -0.0 MIXING RATIO (G/KG) 2.09 2.02 4.36 4.93 5.75 6.18 8.41 8.26 5.52 4.91 4.57 3.68 5.06 VAPOUR PRESSURE (HPA) 2.81 2.73 5.85 6.62 7.70 8.25 11.19 10.99 7.39 6.61 6.16 4.94 6.77 SATURATION DEF. (HPA) 1.19 1.53 2.98 8.64 12.13 20.44 21.33 20.14 16.33 10.95 5.02 2.83 10.29 RELATIVE HUMIDITY (MEAN %) 71 66 71 49 44 33 38 40 39 45 59 66 52 RELATIVE HUMIDITY (MAX. %) 84 82 89 71 64 52 59 61 59 65 78 82 71 RELATIVE HUMIDITY (MIN. %) 59 50 49 29 26 17 22 22 19 27 37 45 34 RELATIVE HUMIDITY (MEAN% 03UTC) 76 70 83 63 58 48 54 58 54 60 74 77 65 RELATIVE HUMIDITY (MEAN% 09UTC) 62 55 56 32 29 20 25 24 23 31 42 54 38 RELATIVE HUMIDITY (MEAN% 15UTC) 72 67 66 43 37 26 31 35 33 40 52 66 47 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 12.0 17.7 62.2 19.2 10.5 2.0 0.0 0.3 0.0 21.0 11.6 35.6 192.1 DAYS WITH PRECIPITATION >=10 0 0 2 0 0 0 0 0 0 1 0 2 5 DAYS WITH PRECIPITATION >= 5 0 1 4 2 1 0 0 0 0 2 1 2 13 DAYS WITH PRECIPITATION >= 1 5 5 13 4 2 1 0 0 0 3 3 5 41 DAYS WITH PRECIPITATION 11 9 14 5 8 1 0 3 0 4 9 9 73 GREATEST DAILY PRECIPITATION 3.0 6.0 16.0 7.1 7.9 2.0 0.0 0.3 0.0 11.0 6.0 13.0 16.0 DAY 17 19 10 12 7 6 ** 18 ** 31 14 1 DAY WITH THUNDER STORM 0 0 2 3 8 1 0 0 0 4 1 0 19 DAYS WITH SNOW OR SLEET 11 10 5 0 0 0 0 0 0 0 0 5 31 DAYS WITH DUST 0 1 0 3 3 3 1 0 0 4 1 0 16 WIND DIRECTION (PREVAILING) 315 315 315 315 315 315 360 135 315 315 225 315 315 PREVAILING WIND SPEED(KNOTS) 7.9 8.4 7.6 6.1 5.9 5.8 11.4 8.9 5.0 5.5 9.3 6.2 6.7 PREVAILING WIND PERCENT 39.5 49.6 25.4 27.9 24.6 16.7 21.4 16.9 17.1 13.7 15.4 28.6 22.1 CALMS PERCENT OF WIND 23.4 21.0 31.0 22.5 20.2 24.6 23.4 29.0 39.6 40.7 37.5 40.7 29.5 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 326 327 309 344 324 12 40 56 7 341 245 293 346 VECTOR WIND MAGNITUDE(KNOTS) 4.8 5.6 2.6 3.2 1.9 2.8 4.4 4.0 2.0 1.0 1.8 2.3 2.3 WIND STEADINESES (MEAN %) 71.6 80.0 45.6 49.2 31.7 43.7 57.9 54.8 40.0 19.2 34.6 59.0 38.3 WIND SPEED (MEAN KNOTS) 6.7 7.0 5.7 6.5 6.0 6.4 7.6 7.3 5.0 5.2 5.2 3.9 6.0 FASTEST WIND DIRECTION 30 360 250 10 10 10 30 30 20 30 30 300 360 FASTEST WIND SPEED (KNOTS) 25 39 23 39 31 29 19 33 31 29 17 19 39 DAY 4 11 31 29 20 17 9 16 22 22 6 5 DAYS WITH SKY CLEAR (0-2)/8 15 15 8 7 14 29 29 16 29 20 8 10 200 DAYS WITH P.CLOUDY (3-6)/8 9 9 12 21 14 1 2 15 1 9 16 10 119 DAYS WITH CLOUDY (7-8)/8 7 4 11 2 3 0 0 0 0 2 6 11 46 DAYS WITH VISIBILITY =< 2 KM 5 4 2 0 1 0 0 0 0 0 0 3 15 DURATION OF SUNSHINE HOURS 186.7 211.6 154.3 248.7 297.1 358.7 357.8 305.0 308.4 253.3 194.3 159.1 3035.0 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.6 843.6 839.4 843.1 842.2 838.9 839.4 839.4 841.3 845.0 844.3 841.9 841.7 MAX. QFE PRESSURE IN HPA 849.0 850.5 845.3 847.1 846.2 842.8 844.1 844.8 850.1 851.1 849.1 848.1 851.1 DAY-HOUR 22- 6 25- 6 8- 6 10-18 20- 6 4- 6 20- 6 19- 6 24- 6 27- 6 8- 6 18-18 MIN. QFE PRESSURE IN HPA 833.6 834.4 827.1 838.1 836.0 832.4 831.7 831.8 834.4 838.3 838.7 834.2 827.1 DAY-HOUR 17- 3 23- 3 29- 9 13-12 31-15 9-15 5-15 1-15 13-12 1-15 15-12 4-21 MEAN QNH PRESSURE IN HPA 1017.4 1019.8 1014.8 1019.2 1018.1 1014.2 1014.8 1014.8 1017.0 1021.4 1020.6 1017.8 1017.5 MAX. QNH PRESSURE IN HPA 1026.0 1027.8 1021.7 1023.8 1022.8 1018.8 1020.3 1021.1 1027.3 1028.5 1026.1 1025.0 1028.5 DAY-HOUR 22- 6 25- 6 8- 6 10-18 20- 6 4- 6 20- 6 19- 6 24- 6 27- 6 8- 6 18-18 MIN. QNH PRESSURE IN HPA 1008.1 1009.0 1000.5 1013.3 1010.9 1006.7 1005.9 1006.0 1009.0 1013.6 1014.0 1008.8 1000.5 DAY-HOUR 17- 3 23- 3 29- 9 13-12 31-15 9-15 5-15 1-15 13-12 1-15 15-12 4-21 MEAN QFF PRESSURE IN HPA 1025.2 1027.5 1014.6 1013.8 1010.2 1002.5 1001.5 1001.9 1007.7 1014.9 1018.2 1018.8 1013.1 MAX. QFF PRESSURE IN HPA 1037.4 1040.2 1023.8 1021.2 1021.3 1009.6 1008.8 1013.3 1024.7 1028.2 1027.1 1026.8 1040.2 DAY-HOUR 30-18 4- 6 7- 6 2- 3 1- 3 7- 3 10- 3 19- 3 23- 3 24- 3 22- 6 18-18 MIN. QFF PRESSURE IN HPA 1014.2 1013.2 998.2 1005.2 999.4 994.2 992.5 993.0 997.5 1004.0 1010.3 1009.9 992.5 DAY-HOUR 2-12 23- 0 29- 9 29- 0 31-12 30-15 5-15 1-12 12-12 1-21 15-12 4-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 841.3 843.3 839.1 843.0 842.3 839.1 839.6 839.5 841.5 845.1 844.3 841.9 841.7 MAX. QFE PRESSURE IN HPA 847.4 849.4 844.4 846.8 845.0 841.8 843.0 844.1 849.1 849.7 847.9 846.4 849.7 DAY 22 4 8 11 22 4 20 19 24 27 8 19 MIN. QFE PRESSURE IN HPA 834.4 834.8 829.0 839.5 838.1 834.3 835.0 834.7 836.6 839.4 839.4 834.2 829.0 DAY 17 23 16 14 31 10 6 2 13 2 20 5 MEAN QNH PRESSURE IN HPA 1017.1 1019.3 1014.5 1019.0 1018.2 1014.5 1015.1 1015.0 1017.3 1021.4 1020.6 1017.7 1017.5 MAX. QNH PRESSURE IN HPA 1024.2 1026.5 1020.7 1023.5 1021.4 1017.6 1019.0 1020.3 1026.1 1026.8 1024.7 1023.0 1026.8 DAY 22 4 8 11 22 4 20 19 24 27 8 19 MIN. QNH PRESSURE IN HPA 1009.0 1009.5 1002.7 1014.9 1013.3 1008.9 1009.7 1009.4 1011.6 1014.8 1014.8 1008.8 1002.7 DAY 17 23 16 14 31 10 6 2 13 2 20 5 MEAN QFF PRESSURE IN HPA 1024.2 1026.6 1014.0 1013.7 1010.4 1002.7 1001.5 1001.7 1007.3 1014.6 1017.7 1018.1 1012.7 MAX. QFF PRESSURE IN HPA 1034.5 1038.3 1021.9 1019.6 1018.6 1007.6 1006.8 1011.6 1022.9 1025.8 1023.8 1023.8 1038.3 DAY 31 4 12 2 1 13 10 19 23 24 22 19 MIN. QFF PRESSURE IN HPA 1014.8 1013.2 1001.6 1005.2 1001.1 996.7 995.7 995.3 1000.1 1004.9 1010.8 1010.9 995.3 DAY 3 23 16 29 31 30 6 2 13 2 20 5 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 841.3 843.4 839.4 843.4 842.9 839.8 840.5 840.3 842.2 845.4 844.6 842.0 842.1 MAX. QFE PRESSURE IN HPA 847.6 849.4 844.5 846.8 845.7 842.7 844.0 844.5 849.6 850.4 848.3 846.0 850.4 DAY 22 4 8 11 21 26 20 19 24 27 8 19 MIN. QFE PRESSURE IN HPA 833.6 834.4 829.0 840.1 837.9 835.5 836.0 835.1 836.9 839.7 840.5 836.0 829.0 DAY 17 23 29 14 7 10 6 1 13 2 20 5 MEAN QNH PRESSURE IN HPA 1017.1 1019.5 1014.8 1019.5 1019.0 1015.4 1016.2 1015.8 1018.1 1021.9 1020.9 1017.9 1018.0 MAX. QNH PRESSURE IN HPA 1024.4 1026.5 1020.8 1023.5 1022.2 1018.7 1020.2 1020.8 1026.7 1027.7 1025.2 1022.5 1027.7 DAY 22 4 8 11 21 26 20 19 24 27 8 19 MIN. QNH PRESSURE IN HPA 1008.1 1009.0 1002.7 1015.7 1013.1 1010.3 1010.9 1009.8 1011.9 1015.2 1016.1 1010.9 1002.7 DAY 17 23 29 14 7 10 6 1 13 2 20 5 MEAN QFF PRESSURE IN HPA 1025.5 1028.0 1015.2 1015.3 1012.0 1004.4 1003.7 1004.1 1010.0 1016.6 1019.4 1019.6 1014.5 MAX. QFF PRESSURE IN HPA 1035.1 1039.9 1023.1 1021.2 1021.3 1009.6 1008.8 1013.3 1024.7 1028.2 1025.9 1025.0 1039.9 DAY 30 4 12 2 1 7 10 19 23 24 22 19 MIN. QFF PRESSURE IN HPA 1015.7 1013.5 1001.7 1007.8 1003.0 998.2 998.2 996.6 1002.2 1006.1 1013.5 1013.5 996.6 DAY 17 23 29 29 31 30 1 1 13 2 20 5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.4 844.2 840.2 844.0 843.2 840.0 840.7 840.7 842.7 846.2 845.5 842.8 842.7 MAX. QFE PRESSURE IN HPA 849.0 850.5 845.3 847.1 846.2 842.8 844.1 844.8 850.1 851.1 849.1 847.3 851.1 DAY 22 25 8 11 20 4 20 19 24 27 8 18 MIN. QFE PRESSURE IN HPA 834.3 835.6 829.1 840.5 838.5 835.1 836.2 835.2 837.5 840.3 841.5 837.9 829.1 DAY 17 23 29 29 7 10 6 1 13 2 19 5 MEAN QNH PRESSURE IN HPA 1018.3 1020.5 1015.7 1020.2 1019.2 1015.5 1016.4 1016.3 1018.7 1022.8 1021.9 1018.8 1018.7 MAX. QNH PRESSURE IN HPA 1026.0 1027.8 1021.7 1023.8 1022.8 1018.8 1020.3 1021.1 1027.3 1028.5 1026.1 1024.0 1028.5 DAY 22 25 8 11 20 4 20 19 24 27 8 18 MIN. QNH PRESSURE IN HPA 1008.9 1010.4 1002.8 1016.1 1013.8 1009.8 1011.1 1009.9 1012.6 1015.9 1017.3 1013.1 1002.8 DAY 17 23 29 29 7 10 6 1 13 2 19 5 MEAN QFF PRESSURE IN HPA 1026.7 1029.0 1015.8 1014.6 1011.1 1003.6 1003.0 1003.5 1009.4 1016.2 1019.9 1020.5 1014.4 MAX. QFF PRESSURE IN HPA 1036.9 1040.2 1023.8 1020.2 1019.1 1008.6 1008.2 1011.4 1022.6 1026.2 1027.1 1026.2 1040.2 DAY 30 4 7 2 1 7 10 19 23 24 22 18 MIN. QFF PRESSURE IN HPA 1014.9 1014.6 1002.4 1009.1 1002.4 995.9 996.8 996.8 1002.7 1006.6 1014.3 1015.9 995.9 DAY 17 23 29 29 31 10 6 1 12 2 19 5 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.8 843.9 839.7 843.2 842.3 839.1 839.8 839.7 841.4 844.9 844.3 841.8 841.8 MAX. QFE PRESSURE IN HPA 847.9 849.9 845.0 846.4 845.4 842.0 842.8 843.7 849.1 849.3 848.1 846.9 849.9 DAY 22 25 8 10 20 4 20 19 23 24 8 18 MIN. QFE PRESSURE IN HPA 834.4 836.4 827.1 840.0 838.0 834.0 835.3 833.7 836.1 839.7 840.0 838.2 827.1 DAY 17 23 29 29 31 10 6 1 13 2 15 4 MEAN QNH PRESSURE IN HPA 1017.6 1020.0 1015.2 1019.3 1018.2 1014.4 1015.3 1015.2 1017.1 1021.3 1020.5 1017.7 1017.7 MAX. QNH PRESSURE IN HPA 1024.7 1027.1 1021.4 1023.0 1021.8 1017.9 1018.8 1019.8 1026.1 1026.4 1025.0 1023.6 1027.1 DAY 22 25 8 10 20 4 20 19 23 24 8 18 MIN. QNH PRESSURE IN HPA 1009.0 1011.3 1000.5 1015.5 1013.2 1008.5 1010.1 1008.2 1011.0 1015.2 1015.5 1013.4 1000.5 DAY 17 23 29 29 31 10 6 1 13 2 15 4 MEAN QFF PRESSURE IN HPA 1024.9 1027.2 1014.4 1013.3 1009.9 1002.3 1001.3 1001.6 1007.0 1014.0 1017.6 1018.1 1012.6 MAX. QFF PRESSURE IN HPA 1035.1 1037.7 1021.7 1018.9 1016.5 1007.1 1006.1 1009.3 1020.7 1024.1 1024.0 1024.2 1037.7 DAY 30 4 3 2 1 6 25 19 23 24 22 18 MIN. QFF PRESSURE IN HPA 1015.5 1015.6 998.2 1007.8 1002.0 995.9 995.7 994.4 999.0 1005.0 1011.5 1013.6 994.4 DAY 17 23 29 15 31 30 6 1 11 2 30 11 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 841.0 843.2 838.7 842.1 841.1 837.8 838.3 838.1 840.0 843.7 843.3 841.2 840.7 MAX. QFE PRESSURE IN HPA 845.9 848.7 844.1 845.2 844.3 840.9 841.4 842.6 847.7 847.8 847.2 846.4 848.7 DAY 22 25 8 10 20 3 20 19 23 24 8 18 MIN. QFE PRESSURE IN HPA 834.9 835.8 827.7 838.1 836.3 832.9 833.4 832.4 834.4 838.7 838.7 837.2 827.7 DAY 17 1 29 13 31 9 5 1 13 1 15 4 MEAN QNH PRESSURE IN HPA 1016.7 1019.2 1014.0 1017.9 1016.9 1012.9 1013.6 1013.4 1015.5 1019.8 1019.4 1016.9 1016.4 MAX. QNH PRESSURE IN HPA 1022.4 1025.7 1020.3 1021.6 1020.5 1016.6 1017.2 1018.6 1024.5 1024.6 1023.9 1023.0 1025.7 DAY 22 25 8 10 20 3 20 19 23 24 8 18 MIN. QNH PRESSURE IN HPA 1009.6 1010.6 1001.2 1013.3 1011.2 1007.3 1007.8 1006.7 1009.0 1014.0 1014.0 1012.3 1001.2 DAY 17 1 29 13 31 9 5 1 13 1 15 4 MEAN QFF PRESSURE IN HPA 1023.8 1026.2 1013.5 1012.5 1008.9 1001.1 1000.0 1000.1 1005.6 1013.1 1016.4 1017.3 1011.5 MAX. QFF PRESSURE IN HPA 1033.4 1036.1 1020.7 1018.2 1015.6 1005.8 1004.4 1008.7 1020.6 1024.3 1021.7 1023.4 1036.1 DAY 30 4 11 2 1 13 10 18 22 23 22 18 MIN. QFF PRESSURE IN HPA 1014.2 1014.4 1000.7 1006.8 999.4 994.5 993.2 993.0 997.5 1004.2 1010.3 1012.6 993.0 DAY 2 23 29 15 31 30 5 1 12 2 15 11 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.4 843.5 838.8 842.3 841.1 837.5 837.9 837.9 840.0 844.3 843.8 841.8 840.9 MAX. QFE PRESSURE IN HPA 846.5 848.7 843.9 845.7 844.5 841.0 841.6 842.6 847.7 848.3 847.6 847.5 848.7 DAY 21 5 7 10 13 3 9 19 23 23 7 18 MIN. QFE PRESSURE IN HPA 836.1 836.6 829.5 838.5 836.0 832.4 831.7 831.8 834.4 838.3 839.5 836.0 829.5 DAY 2 22 29 13 31 9 5 1 13 1 15 4 MEAN QNH PRESSURE IN HPA 1017.1 1019.7 1014.1 1018.2 1016.8 1012.6 1013.1 1013.1 1015.5 1020.5 1020.0 1017.7 1016.5 MAX. QNH PRESSURE IN HPA 1023.1 1025.7 1020.1 1022.2 1020.8 1016.7 1017.4 1018.6 1024.5 1025.2 1024.4 1024.3 1025.7 DAY 21 5 7 10 13 3 9 19 23 23 7 18 MIN. QNH PRESSURE IN HPA 1011.0 1011.6 1003.3 1013.8 1010.9 1006.7 1005.9 1006.0 1009.0 1013.6 1014.9 1010.9 1003.3 DAY 2 22 29 13 31 9 5 1 13 1 15 4 MEAN QFF PRESSURE IN HPA 1025.5 1027.9 1014.4 1013.8 1009.6 1001.5 1000.6 1001.3 1007.2 1015.3 1018.4 1019.3 1012.9 MAX. QFF PRESSURE IN HPA 1036.9 1038.6 1021.5 1018.4 1016.0 1007.8 1006.2 1009.6 1021.1 1026.4 1024.7 1026.3 1038.6 DAY 30 3 11 30 1 6 9 18 22 23 22 18 MIN. QFF PRESSURE IN HPA 1015.1 1016.9 1001.6 1008.3 999.7 994.2 992.5 993.6 999.0 1006.0 1012.9 1012.8 992.5 DAY 2 23 28 17 31 30 5 1 13 1 19 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 841.9 844.0 839.7 843.5 842.2 838.7 839.1 839.2 841.3 845.3 844.5 842.2 841.8 MAX. QFE PRESSURE IN HPA 847.8 849.6 844.8 847.1 845.5 841.9 842.8 844.1 848.8 849.4 847.9 848.1 849.6 DAY 21 3 6 10 20 3 9 18 23 26 7 18 MIN. QFE PRESSURE IN HPA 836.1 835.7 830.9 840.3 837.6 833.7 833.6 833.0 836.2 839.3 840.0 835.3 830.9 DAY 2 22 28 13 31 9 5 1 12 1 15 4 MEAN QNH PRESSURE IN HPA 1017.7 1020.2 1015.1 1019.6 1018.1 1014.1 1014.5 1014.6 1017.0 1021.7 1020.8 1018.0 1017.6 MAX. QNH PRESSURE IN HPA 1024.6 1026.7 1021.1 1023.8 1021.9 1017.7 1018.8 1020.3 1025.8 1026.5 1024.7 1025.0 1026.7 DAY 21 3 6 10 20 3 9 18 23 26 7 18 MIN. QNH PRESSURE IN HPA 1011.0 1010.5 1004.9 1015.9 1012.7 1008.2 1008.1 1007.4 1011.1 1014.7 1015.5 1010.1 1004.9 DAY 2 22 28 13 31 9 5 1 12 1 15 4 MEAN QFF PRESSURE IN HPA 1026.2 1028.4 1015.2 1013.9 1009.8 1002.1 1001.0 1001.7 1007.7 1015.2 1018.7 1019.7 1013.3 MAX. QFF PRESSURE IN HPA 1037.4 1039.9 1022.7 1019.1 1016.0 1008.3 1005.5 1011.0 1022.6 1025.0 1025.2 1026.8 1039.9 DAY 30 3 6 30 1 6 9 18 22 23 22 18 MIN. QFF PRESSURE IN HPA 1015.6 1015.9 1004.9 1007.5 1001.4 995.1 993.2 994.0 1000.3 1005.5 1012.0 1011.7 993.2 DAY 2 22 27 17 30 9 5 1 13 1 19 4 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 841.6 843.8 839.6 843.6 842.3 839.0 839.5 839.6 841.5 845.3 844.4 842.0 841.9 MAX. QFE PRESSURE IN HPA 848.2 849.5 844.6 847.1 845.3 842.1 842.8 843.5 849.1 849.7 847.9 847.5 849.7 DAY 21 3 6 10 20 3 9 18 23 26 7 18 MIN. QFE PRESSURE IN HPA 835.8 835.1 830.7 840.1 838.4 833.9 834.6 833.4 836.6 838.7 839.6 834.2 830.7 DAY 2 22 15 13 6 9 5 1 12 1 19 4 MEAN QNH PRESSURE IN HPA 1017.4 1019.9 1015.1 1019.7 1018.2 1014.4 1015.0 1015.1 1017.3 1021.7 1020.6 1017.8 1017.7 MAX. QNH PRESSURE IN HPA 1025.1 1026.6 1020.9 1023.8 1021.7 1018.0 1018.8 1019.6 1026.1 1026.8 1024.7 1024.3 1026.8 DAY 21 3 6 10 20 3 9 18 23 26 7 18 MIN. QNH PRESSURE IN HPA 1010.6 1009.8 1004.7 1015.7 1013.7 1008.4 1009.2 1007.8 1011.6 1014.0 1015.1 1008.8 1004.7 DAY 2 22 15 13 6 9 5 1 12 1 19 4 MEAN QFF PRESSURE IN HPA 1024.8 1026.8 1014.3 1013.7 1009.8 1002.1 1001.0 1001.4 1007.2 1014.6 1017.6 1018.3 1012.6 MAX. QFF PRESSURE IN HPA 1035.1 1038.5 1021.9 1019.2 1015.9 1008.1 1005.3 1010.1 1022.2 1024.8 1024.4 1025.4 1038.5 DAY 30 3 6 1 1 6 9 18 22 23 21 18 MIN. QFF PRESSURE IN HPA 1014.6 1013.9 1002.7 1006.1 1002.2 995.7 994.9 993.2 999.7 1004.0 1010.4 1009.9 993.2 DAY 2 22 15 28 30 30 5 1 12 1 19 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -3.8 -2.4 3.9 10.7 16.2 21.9 23.2 22.3 20.6 12.5 9.1 2.2 11.4 MINIMUN AIR TEMPERATURE (C) -7.5 -6.8 -1.2 4.1 8.1 12.7 15.8 14.1 11.5 5.5 2.7 -3.2 4.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 24 18 6 0 0 0 0 0 0 0 0 13 61 DAYS WITH FREEZING MIN.<= 0 30 28 20 3 0 0 0 0 0 0 9 19 109 TEMPERATURE RECORDS LOWEST(C) -15.2 -12.6 -8.6 -1.7 3.2 8.0 9.0 10.0 8.2 0.4 -3.2 -14.8 -15.2 DAY 12 20 17 3 14 1 6 21 17 19 14 27 MAXIMUM AIR TEMPERATURE (C) 0.8 1.8 10.4 17.6 24.0 30.2 30.8 30.9 30.5 20.8 17.1 7.9 18.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 19 21 19 17 0 0 0 77 DAYS WITH MAXIMUM TEMP. <= 0 13 12 2 0 0 0 0 0 0 0 0 5 32 TEMPERATURE RECORDS HIGHEST(C) 5.8 7.2 16.6 27.8 30.0 33.7 36.8 37.8 34.3 25.8 23.0 19.0 37.8 DAY 5 28 24 27 25 26 27 7 13 4 5 3 DIF. BETWEEN (MAX.-MIN.) (C) 8.3 8.6 11.6 13.5 15.9 17.5 15.0 16.8 19.0 15.3 14.4 11.1 14.0 MEAN DAILY TEMP. (MDT) (C) -3.3 -2.5 4.6 10.8 16.1 21.5 23.3 22.5 21.0 13.1 9.9 2.3 11.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 37.7 94.8 65.5 18.4 0.0 0.0 0.0 216.5 HEATING DEG. DAYS(BASE 18 0C) 661.6 573.3 416.3 215.9 71.2 3.2 3.9 1.4 0.0 150.5 243.6 486.6 2827.5 DEWPOINT (MEAN C) -8.1 -6.8 -4.2 -1.0 0.8 3.5 8.4 7.9 2.5 1.8 -3.3 -6.5 -0.4 MIXING RATIO (G/KG) 2.60 2.82 3.49 4.40 5.19 6.14 8.43 8.20 5.74 5.35 3.71 2.92 4.92 VAPOUR PRESSURE (HPA) 3.50 3.78 4.70 5.90 6.95 8.20 11.20 10.92 7.68 7.21 5.00 3.94 6.58 SATURATION DEF. (HPA) 1.29 1.50 3.89 7.99 12.69 19.68 18.88 17.72 18.31 8.22 7.29 4.10 10.13 RELATIVE HUMIDITY (MEAN %) 74 73 60 50 41 34 43 45 35 53 45 57 51 RELATIVE HUMIDITY (MAX. %) 86 85 83 75 60 52 63 68 58 76 64 74 70 RELATIVE HUMIDITY (MIN. %) 58 60 37 28 24 19 26 25 16 28 24 40 32 RELATIVE HUMIDITY (MEAN% 03UTC) 78 81 75 70 54 48 60 64 53 70 61 68 65 RELATIVE HUMIDITY (MEAN% 09UTC) 64 64 44 33 29 23 29 27 19 34 27 45 37 RELATIVE HUMIDITY (MEAN% 15UTC) 75 71 52 40 33 28 37 37 27 50 41 53 45 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 20.5 46.4 26.8 32.8 20.2 0.6 3.1 0.2 0.0 25.2 3.1 18.7 197.6 DAYS WITH PRECIPITATION >=10 0 2 1 1 0 0 0 0 0 1 0 1 6 DAYS WITH PRECIPITATION >= 5 0 4 2 2 2 0 0 0 0 2 0 1 13 DAYS WITH PRECIPITATION >= 1 7 7 4 4 3 0 1 0 0 3 1 3 33 DAYS WITH PRECIPITATION 13 11 14 11 4 1 4 2 0 8 3 6 77 GREATEST DAILY PRECIPITATION 4.5 14.0 16.0 19.0 9.0 0.6 3.0 0.2 0.0 17.6 2.4 10.0 19.0 DAY 10 10 11 2 12 15 5 1 ** 28 12 24 DAY WITH THUNDER STORM 0 0 1 4 1 1 0 0 0 2 1 0 10 DAYS WITH SNOW OR SLEET 14 11 4 1 0 0 0 0 0 0 0 5 35 DAYS WITH DUST 0 0 1 2 3 4 4 4 0 1 1 0 20 WIND DIRECTION (PREVAILING) 315 315 315 315 315 360 360 360 315 315 315 315 315 PREVAILING WIND SPEED(KNOTS) 6.8 7.1 5.3 5.7 6.2 13.3 16.7 14.1 4.2 4.4 3.8 6.9 5.8 PREVAILING WIND PERCENT 32.7 32.6 23.8 29.2 15.3 18.3 21.8 21.8 18.3 14.5 23.8 31.0 20.7 CALMS PERCENT OF WIND 35.1 37.9 30.6 23.3 27.4 22.9 27.0 31.0 30.0 34.3 40.4 33.9 31.1 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 322 308 346 279 335 357 32 39 36 347 257 317 347 VECTOR WIND MAGNITUDE(KNOTS) 3.5 2.7 3.3 3.3 2.2 2.8 6.0 4.1 1.4 1.8 0.8 2.8 2.2 WIND STEADINESES (MEAN %) 70.0 64.3 54.1 60.0 35.5 41.2 71.4 57.7 31.1 39.1 27.6 62.2 40.0 WIND SPEED (MEAN KNOTS) 5.0 4.2 6.1 5.5 6.2 6.8 8.4 7.1 4.5 4.6 2.9 4.5 5.5 FASTEST WIND DIRECTION 20 100 130 260 210 10 10 10 30 10 210 360 10 FASTEST WIND SPEED (KNOTS) 23 17 35 29 29 35 39 39 31 35 17 39 39 DAY 5 19 16 19 2 29 11 1 2 14 11 25 DAYS WITH SKY CLEAR (0-2)/8 7 12 11 8 20 26 17 28 30 19 17 10 205 DAYS WITH P.CLOUDY (3-6)/8 11 7 14 17 8 3 14 3 0 9 12 15 113 DAYS WITH CLOUDY (7-8)/8 13 9 6 5 3 1 0 0 0 3 1 6 47 DAYS WITH VISIBILITY =< 2 KM 5 7 2 5 0 0 0 0 0 0 0 3 22 DURATION OF SUNSHINE HOURS 114.7 ****** 199.6 ****** 326.2 ****** ****** ****** ****** ****** ****** 166.9 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.2 839.8 843.3 839.4 840.7 838.7 838.4 839.3 840.9 845.1 845.3 843.4 841.4 MAX. QFE PRESSURE IN HPA 850.4 848.7 851.6 845.6 846.8 845.1 843.4 844.4 846.4 852.8 853.6 851.1 853.6 DAY-HOUR 26- 6 8- 6 10- 6 24- 6 16- 6 1- 6 17- 6 29- 6 27- 6 19- 6 23- 6 28- 6 MIN. QFE PRESSURE IN HPA 834.0 829.5 835.9 830.6 832.3 830.9 833.0 833.1 836.0 838.4 838.4 835.4 829.5 DAY-HOUR 23- 0 15-12 24-12 15-12 13- 0 26-15 29-15 7-15 10-12 1-12 1-12 24-21 MEAN QNH PRESSURE IN HPA 1018.1 1015.3 1019.4 1014.9 1016.3 1014.0 1013.7 1014.7 1016.6 1021.5 1021.7 1019.5 1017.1 MAX. QNH PRESSURE IN HPA 1027.7 1025.7 1029.1 1022.1 1023.5 1021.5 1019.5 1020.7 1023.0 1030.5 1031.4 1028.5 1031.4 DAY-HOUR 26- 6 8- 6 10- 6 24- 6 16- 6 1- 6 17- 6 29- 6 27- 6 19- 6 23- 6 28- 6 MIN. QNH PRESSURE IN HPA 1008.5 1003.3 1010.8 1004.6 1006.5 1004.9 1007.4 1007.5 1010.9 1013.7 1013.7 1010.2 1003.3 DAY-HOUR 23- 0 15-12 24-12 15-12 13- 0 26-15 29-15 7-15 10-12 1-12 1-12 24-21 MEAN QFF PRESSURE IN HPA 1024.1 1020.3 1020.0 1010.6 1008.5 1002.5 1001.3 1002.9 1006.0 1016.1 1018.8 1021.4 1012.7 MAX. QFF PRESSURE IN HPA 1037.7 1033.6 1036.1 1021.6 1018.8 1012.1 1008.6 1012.4 1013.7 1030.3 1030.9 1039.8 1039.8 DAY-HOUR 12- 3 8- 6 17- 6 3- 3 15- 3 1- 3 9- 3 29- 6 24- 3 16- 3 14- 3 28- 6 MIN. QFF PRESSURE IN HPA 1011.2 1005.9 1007.8 997.5 999.0 991.9 993.1 992.6 998.6 1005.3 1007.5 1012.2 991.9 DAY-HOUR 23- 0 15-12 24-12 15-12 2-12 26-15 27-21 7-12 1-12 1-12 1- 0 18- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 841.9 839.6 843.2 839.6 840.7 838.9 838.6 839.6 841.1 845.1 845.2 843.4 841.4 MAX. QFE PRESSURE IN HPA 848.8 847.8 850.5 845.1 845.7 843.2 842.1 843.4 844.6 851.8 852.7 850.3 852.7 DAY 27 8 10 24 16 1 9 29 24 16 23 28 MIN. QFE PRESSURE IN HPA 834.0 831.0 838.5 833.6 832.3 833.1 835.6 835.9 837.7 839.8 838.5 835.4 831.0 DAY 23 16 25 2 13 27 30 7 5 14 1 25 MEAN QNH PRESSURE IN HPA 1017.8 1015.1 1019.3 1015.0 1016.3 1014.3 1013.9 1015.1 1016.8 1021.5 1021.6 1019.5 1017.2 MAX. QNH PRESSURE IN HPA 1025.8 1024.6 1027.8 1021.5 1022.2 1019.3 1018.0 1019.5 1020.9 1029.3 1030.3 1027.5 1030.3 DAY 27 8 10 24 16 1 9 29 24 16 23 28 MIN. QNH PRESSURE IN HPA 1008.5 1005.0 1013.8 1008.1 1006.5 1007.5 1010.4 1010.8 1012.9 1015.3 1013.8 1010.2 1005.0 DAY 23 16 25 2 13 27 30 7 5 14 1 25 MEAN QFF PRESSURE IN HPA 1023.3 1019.7 1019.4 1010.5 1008.4 1002.8 1001.2 1003.0 1005.7 1015.6 1017.8 1020.5 1012.3 MAX. QFF PRESSURE IN HPA 1035.2 1032.4 1034.6 1019.5 1016.0 1010.3 1008.0 1010.1 1011.6 1028.6 1030.4 1038.2 1038.2 DAY 12 8 17 3 15 1 9 30 28 16 14 28 MIN. QFF PRESSURE IN HPA 1011.2 1007.5 1009.6 1000.6 1001.6 994.3 994.4 995.9 1001.0 1006.0 1007.5 1012.2 994.3 DAY 23 16 5 29 3 27 28 7 5 1 1 18 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 841.9 839.8 843.4 839.8 841.2 839.8 839.4 840.3 841.8 845.5 845.4 843.5 841.8 MAX. QFE PRESSURE IN HPA 849.0 848.0 850.6 845.4 846.3 844.9 843.3 844.1 845.1 852.3 852.7 850.3 852.7 DAY 26 8 10 24 16 1 17 29 27 16 23 28 MIN. QFE PRESSURE IN HPA 835.4 832.3 839.0 833.4 832.7 833.8 836.2 836.3 838.1 839.7 838.9 835.8 832.3 DAY 18 16 5 2 13 27 2 7 5 14 1 25 MEAN QNH PRESSURE IN HPA 1017.8 1015.2 1019.5 1015.3 1016.9 1015.3 1014.8 1015.8 1017.6 1022.0 1021.9 1019.7 1017.7 MAX. QNH PRESSURE IN HPA 1026.0 1024.9 1027.9 1021.8 1022.9 1021.2 1019.4 1020.3 1021.5 1029.9 1030.3 1027.5 1030.3 DAY 26 8 10 24 16 1 17 29 27 16 23 28 MIN. QNH PRESSURE IN HPA 1010.2 1006.5 1014.4 1007.8 1007.0 1008.3 1011.1 1011.2 1013.3 1015.2 1014.2 1010.6 1006.5 DAY 18 16 5 2 13 27 2 7 5 14 1 25 MEAN QFF PRESSURE IN HPA 1024.2 1020.8 1020.7 1011.9 1009.9 1004.4 1003.2 1005.2 1008.3 1018.0 1020.2 1022.2 1014.1 MAX. QFF PRESSURE IN HPA 1037.7 1032.6 1035.5 1021.6 1018.8 1012.1 1008.6 1012.3 1013.7 1030.3 1030.9 1039.0 1039.0 DAY 12 8 17 3 15 1 9 30 24 16 14 28 MIN. QFF PRESSURE IN HPA 1013.3 1009.7 1011.2 1000.3 1003.0 995.1 997.2 997.4 1002.7 1007.9 1008.6 1013.5 995.1 DAY 23 16 5 29 2 27 30 7 5 14 1 18 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.9 840.6 844.2 840.1 841.6 840.0 839.7 840.6 842.4 846.3 846.4 844.4 842.4 MAX. QFE PRESSURE IN HPA 850.4 848.7 851.6 845.6 846.8 845.1 843.4 844.4 846.4 852.8 853.6 851.1 853.6 DAY 26 8 10 24 16 1 17 29 27 19 23 28 MIN. QFE PRESSURE IN HPA 836.6 833.4 839.3 834.5 833.9 834.0 836.2 836.7 838.6 841.3 840.1 835.9 833.4 DAY 23 10 24 2 13 27 2 7 5 14 1 25 MEAN QNH PRESSURE IN HPA 1018.9 1016.3 1020.5 1015.7 1017.4 1015.6 1015.1 1016.2 1018.3 1022.9 1023.0 1020.7 1018.4 MAX. QNH PRESSURE IN HPA 1027.7 1025.7 1029.1 1022.1 1023.5 1021.5 1019.5 1020.7 1023.0 1030.5 1031.4 1028.5 1031.4 DAY 26 8 10 24 16 1 17 29 27 19 23 28 MIN. QNH PRESSURE IN HPA 1011.6 1007.8 1014.7 1009.1 1008.4 1008.5 1011.1 1011.7 1013.9 1017.0 1015.7 1010.8 1007.8 DAY 23 10 24 2 13 27 2 7 5 14 1 25 MEAN QFF PRESSURE IN HPA 1025.4 1021.5 1021.3 1011.4 1009.4 1003.8 1002.7 1004.4 1007.7 1017.4 1020.6 1023.1 1014.1 MAX. QFF PRESSURE IN HPA 1036.7 1033.6 1036.1 1020.9 1017.9 1010.8 1007.5 1012.4 1012.8 1029.1 1030.9 1039.8 1039.8 DAY 26 8 17 3 15 1 31 29 27 16 14 28 MIN. QFF PRESSURE IN HPA 1015.1 1011.3 1012.1 1000.8 1002.1 994.3 997.0 996.3 1001.6 1008.8 1010.0 1016.3 994.3 DAY 4 15 24 29 2 27 27 7 5 1 1 18 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.3 840.0 843.4 839.3 840.8 838.8 838.7 839.4 841.1 845.1 845.2 843.4 841.5 MAX. QFE PRESSURE IN HPA 849.8 847.8 850.9 844.5 846.0 843.6 842.3 843.4 845.0 851.3 852.3 850.1 852.3 DAY 26 8 9 24 16 1 17 29 27 19 23 28 MIN. QFE PRESSURE IN HPA 836.1 831.6 837.3 832.3 833.8 833.4 835.1 835.2 837.5 840.1 839.1 835.7 831.6 DAY 17 19 24 15 13 27 2 7 5 1 1 25 MEAN QNH PRESSURE IN HPA 1018.2 1015.6 1019.5 1014.7 1016.4 1014.1 1014.0 1014.8 1016.8 1021.5 1021.6 1019.5 1017.2 MAX. QNH PRESSURE IN HPA 1027.0 1024.6 1028.2 1020.8 1022.5 1019.7 1018.2 1019.5 1021.4 1028.7 1029.9 1027.3 1029.9 DAY 26 8 9 24 16 1 17 29 27 19 23 28 MIN. QNH PRESSURE IN HPA 1011.0 1005.7 1012.4 1006.5 1008.3 1007.8 1009.8 1009.9 1012.6 1015.7 1014.5 1010.5 1005.7 DAY 17 19 24 15 13 27 2 7 5 1 1 25 MEAN QFF PRESSURE IN HPA 1023.7 1020.0 1019.7 1010.0 1008.1 1002.2 1001.0 1002.3 1005.5 1015.3 1017.8 1020.7 1012.2 MAX. QFF PRESSURE IN HPA 1035.2 1031.8 1034.1 1016.6 1015.9 1009.6 1006.4 1009.7 1010.8 1027.2 1027.5 1037.0 1037.0 DAY 12 8 17 3 16 1 8 29 27 15 14 28 MIN. QFF PRESSURE IN HPA 1013.9 1007.4 1009.5 1000.0 1000.0 993.7 994.5 993.3 1000.0 1005.7 1007.8 1014.6 993.3 DAY 4 19 24 15 2 27 27 7 5 1 1 18 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 841.5 839.2 842.3 838.4 839.6 837.4 837.4 837.8 839.5 844.0 844.3 842.6 840.3 MAX. QFE PRESSURE IN HPA 849.0 846.6 850.2 843.0 844.3 842.1 840.7 842.3 843.4 850.4 851.7 849.4 851.7 DAY 26 8 9 25 16 4 8 29 23 15 22 28 MIN. QFE PRESSURE IN HPA 834.8 829.5 835.9 830.6 833.8 831.9 833.9 833.5 836.0 838.4 838.4 836.5 829.5 DAY 17 15 24 15 13 26 29 7 10 1 1 25 MEAN QNH PRESSURE IN HPA 1017.3 1014.6 1018.2 1013.7 1015.1 1012.5 1012.5 1013.0 1015.0 1020.2 1020.6 1018.6 1015.9 MAX. QNH PRESSURE IN HPA 1026.0 1023.2 1027.4 1019.0 1020.5 1018.0 1016.4 1018.2 1019.5 1027.7 1029.2 1026.5 1029.2 DAY 26 8 9 25 16 4 8 29 23 15 22 28 MIN. QNH PRESSURE IN HPA 1009.5 1003.3 1010.8 1004.6 1008.3 1006.1 1008.4 1008.0 1010.9 1013.7 1013.7 1011.4 1003.3 DAY 17 15 24 15 13 26 29 7 10 1 1 25 MEAN QFF PRESSURE IN HPA 1022.8 1019.1 1018.3 1009.2 1007.1 1001.1 999.8 1000.8 1003.8 1014.4 1016.8 1019.7 1011.1 MAX. QFF PRESSURE IN HPA 1033.7 1030.7 1032.1 1016.7 1014.1 1008.8 1006.2 1009.0 1009.3 1026.5 1027.3 1035.8 1035.8 DAY 26 8 17 3 15 7 31 29 27 15 14 28 MIN. QFF PRESSURE IN HPA 1013.1 1005.9 1007.8 997.5 999.0 992.9 993.8 992.6 998.6 1005.3 1007.9 1012.8 992.6 DAY 4 15 24 15 2 26 29 7 1 1 1 9 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 842.1 839.6 842.7 838.6 839.7 837.1 837.1 837.6 839.5 844.5 845.0 843.1 840.5 MAX. QFE PRESSURE IN HPA 849.4 847.0 850.6 843.6 843.8 841.9 840.5 842.3 843.6 851.2 853.0 850.6 853.0 DAY 26 7 9 24 15 4 8 29 23 15 22 28 MIN. QFE PRESSURE IN HPA 834.8 829.8 837.5 831.6 834.3 830.9 833.0 833.1 836.2 839.6 838.9 836.8 829.8 DAY 17 15 24 15 12 26 29 7 10 1 1 24 MEAN QNH PRESSURE IN HPA 1017.9 1015.1 1018.7 1013.9 1015.2 1012.2 1012.1 1012.8 1015.0 1020.8 1021.3 1019.1 1016.2 MAX. QNH PRESSURE IN HPA 1026.5 1023.7 1027.9 1019.7 1020.0 1017.7 1016.1 1018.2 1019.7 1028.6 1030.7 1027.9 1030.7 DAY 26 7 9 24 15 4 8 29 23 15 22 28 MIN. QNH PRESSURE IN HPA 1009.5 1003.6 1012.6 1005.7 1008.9 1004.9 1007.4 1007.5 1011.1 1015.1 1014.2 1011.8 1003.6 DAY 17 15 24 15 12 26 29 7 10 1 1 24 MEAN QFF PRESSURE IN HPA 1024.4 1020.5 1019.8 1010.3 1008.0 1001.3 1000.5 1001.9 1005.6 1016.7 1019.7 1021.7 1012.5 MAX. QFF PRESSURE IN HPA 1035.6 1031.7 1033.2 1017.5 1015.8 1008.0 1006.3 1010.3 1012.0 1028.5 1030.5 1038.4 1038.4 DAY 19 7 17 3 15 7 8 29 23 15 14 27 MIN. QFF PRESSURE IN HPA 1013.4 1006.9 1011.5 1001.1 1002.0 991.9 993.6 993.8 1000.5 1009.0 1008.6 1013.9 991.9 DAY 4 15 5 15 2 26 27 7 10 3 9 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 842.6 840.1 843.7 839.8 841.0 838.5 838.3 839.4 840.9 845.4 845.6 843.6 841.6 MAX. QFE PRESSURE IN HPA 849.7 847.7 851.4 844.8 844.7 843.0 841.6 843.8 845.0 852.6 853.2 850.5 853.2 DAY 26 7 9 24 15 4 8 29 23 15 22 28 MIN. QFE PRESSURE IN HPA 835.0 830.0 839.1 833.8 834.0 832.4 834.5 835.1 837.9 839.9 840.0 836.5 830.0 DAY 17 15 24 1 12 26 29 7 4 31 1 24 MEAN QNH PRESSURE IN HPA 1018.5 1015.7 1019.8 1015.3 1016.7 1013.8 1013.6 1014.8 1016.6 1021.8 1022.1 1019.7 1017.4 MAX. QNH PRESSURE IN HPA 1026.8 1024.5 1028.8 1021.1 1021.0 1019.0 1017.4 1020.0 1021.4 1030.2 1030.9 1027.8 1030.9 DAY 26 7 9 24 15 4 8 29 23 15 22 28 MIN. QNH PRESSURE IN HPA 1009.7 1003.9 1014.5 1008.3 1008.5 1006.7 1009.1 1009.8 1013.1 1015.4 1015.5 1011.4 1003.9 DAY 17 15 24 1 12 26 29 7 4 31 1 24 MEAN QFF PRESSURE IN HPA 1025.0 1020.8 1020.6 1011.0 1008.7 1002.0 1001.1 1002.9 1006.0 1016.3 1019.7 1022.3 1013.0 MAX. QFF PRESSURE IN HPA 1037.4 1032.5 1035.2 1018.0 1015.4 1009.2 1007.6 1011.7 1012.2 1029.7 1030.2 1038.8 1038.8 DAY 19 7 16 3 15 7 31 29 27 15 14 28 MIN. QFF PRESSURE IN HPA 1013.2 1006.2 1012.1 1002.9 1002.7 993.6 994.2 995.0 1001.2 1009.7 1009.6 1014.7 993.6 DAY 4 15 24 15 11 26 27 7 4 31 9 17 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 842.4 839.9 843.6 840.0 841.1 838.8 838.6 839.7 841.2 845.3 845.5 843.5 841.6 MAX. QFE PRESSURE IN HPA 849.3 848.0 851.2 845.2 845.2 843.2 842.1 843.6 844.9 852.3 852.9 850.1 852.9 DAY 26 7 9 23 15 7 8 29 23 15 22 28 MIN. QFE PRESSURE IN HPA 834.5 830.4 838.5 833.8 833.6 833.1 834.6 835.7 837.7 839.3 840.1 835.4 830.4 DAY 17 15 31 1 12 26 29 6 4 31 1 24 MEAN QNH PRESSURE IN HPA 1018.3 1015.4 1019.7 1015.5 1016.8 1014.1 1013.9 1015.1 1016.9 1021.7 1021.9 1019.7 1017.4 MAX. QNH PRESSURE IN HPA 1026.4 1024.9 1028.6 1021.6 1021.6 1019.3 1018.0 1019.7 1021.2 1029.9 1030.6 1027.3 1030.6 DAY 26 7 9 23 15 7 8 29 23 15 22 28 MIN. QNH PRESSURE IN HPA 1009.1 1004.3 1013.8 1008.3 1008.1 1007.5 1009.2 1010.5 1012.9 1014.7 1015.7 1010.2 1004.3 DAY 17 15 31 1 12 26 29 6 4 31 1 24 MEAN QFF PRESSURE IN HPA 1024.0 1019.8 1019.9 1010.8 1008.5 1002.3 1000.9 1002.5 1005.6 1015.5 1018.2 1021.0 1012.4 MAX. QFF PRESSURE IN HPA 1035.1 1032.6 1035.1 1017.4 1015.8 1009.6 1008.2 1010.5 1011.1 1029.6 1028.8 1037.9 1037.9 DAY 19 7 16 2 14 7 31 29 27 15 13 27 MIN. QFF PRESSURE IN HPA 1012.4 1006.4 1010.1 1001.9 1001.9 993.3 993.1 994.5 1001.0 1008.2 1008.8 1012.5 993.1 DAY 17 15 31 28 11 26 27 6 4 13 9 17 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -2.2 -2.3 4.0 12.2 15.2 20.2 23.5 22.8 18.3 13.0 6.9 -2.0 10.8 MINIMUN AIR TEMPERATURE (C) -6.6 -6.6 -0.3 6.1 8.0 12.3 15.8 14.6 9.9 6.9 1.1 -6.2 4.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 22 18 4 0 0 0 0 0 0 0 2 19 65 DAYS WITH FREEZING MIN.<= 0 31 26 16 0 0 0 0 0 0 0 10 24 107 TEMPERATURE RECORDS LOWEST(C) -14.6 -14.6 -11.4 1.4 2.0 7.8 10.4 10.4 3.4 3.4 -4.8 -14.6 -14.6 DAY 16 15 11 12 6 4 12 27 28 25 27 19 MAXIMUM AIR TEMPERATURE (C) 2.7 2.9 8.8 19.2 22.4 28.4 31.3 31.3 27.1 20.4 14.0 2.8 17.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 11 21 21 7 0 0 0 60 DAYS WITH MAXIMUM TEMP. <= 0 5 11 2 0 0 0 0 0 0 0 0 10 28 TEMPERATURE RECORDS HIGHEST(C) 7.2 11.3 20.6 25.4 27.3 33.4 37.0 36.2 34.6 24.2 20.8 10.6 37.0 DAY 31 25 30 25 29 30 6 4 1 9 1 4 DIF. BETWEEN (MAX.-MIN.) (C) 9.3 9.5 9.1 13.1 14.4 16.1 15.5 16.7 17.2 13.5 12.9 9.0 13.0 MEAN DAILY TEMP. (MDT) (C) -2.0 -1.9 4.2 12.6 15.2 20.4 23.6 23.0 18.5 13.7 7.5 -1.7 11.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 22.6 89.2 67.7 14.2 0.0 0.0 0.0 193.7 HEATING DEG. DAYS(BASE 18 0C) 618.5 555.9 426.3 161.0 90.0 8.2 1.6 0.0 34.7 134.1 313.5 610.6 2954.3 DEWPOINT (MEAN C) -6.2 -7.4 -1.4 1.5 1.7 5.5 7.5 7.9 3.4 3.8 -1.6 -6.0 0.7 MIXING RATIO (G/KG) 2.97 2.80 4.27 5.22 5.30 6.92 8.00 8.16 6.11 6.13 4.14 3.10 5.26 VAPOUR PRESSURE (HPA) 4.00 3.77 5.73 7.01 7.09 9.24 10.63 10.86 8.20 8.25 5.59 4.17 7.04 SATURATION DEF. (HPA) 1.34 1.72 2.94 8.02 11.18 15.73 19.84 18.58 14.56 7.32 4.96 1.46 8.97 RELATIVE HUMIDITY (MEAN %) 76 70 71 52 45 42 40 43 43 58 58 76 56 RELATIVE HUMIDITY (MAX. %) 88 86 88 76 66 63 60 66 66 81 76 88 75 RELATIVE HUMIDITY (MIN. %) 60 52 53 31 28 24 24 23 23 33 36 59 37 RELATIVE HUMIDITY (MEAN% 03UTC) 83 81 84 70 58 57 54 61 59 74 74 82 70 RELATIVE HUMIDITY (MEAN% 09UTC) 64 58 60 36 33 26 27 27 27 37 40 65 42 RELATIVE HUMIDITY (MEAN% 15UTC) 77 66 63 40 34 34 33 34 37 54 54 77 50 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 40.7 31.1 76.8 21.4 5.4 0.1 0.0 0.0 0.0 23.1 0.6 84.0 283.2 DAYS WITH PRECIPITATION >=10 1 1 3 1 0 0 0 0 0 0 0 2 8 DAYS WITH PRECIPITATION >= 5 3 3 6 1 0 0 0 0 0 2 0 4 19 DAYS WITH PRECIPITATION >= 1 6 5 10 4 2 0 0 0 0 8 0 7 42 DAYS WITH PRECIPITATION 11 11 17 14 8 2 1 0 0 10 5 15 94 GREATEST DAILY PRECIPITATION 15.2 12.1 17.0 14.5 3.4 0.1 0.0 0.0 0.0 6.0 0.5 34.2 34.2 DAY 14 27 10 4 16 21 ** ** ** 21 6 12 DAY WITH THUNDER STORM 1 0 1 12 4 7 0 0 0 3 0 0 28 DAYS WITH SNOW OR SLEET 12 10 9 0 0 0 0 0 0 0 1 9 41 DAYS WITH DUST 0 0 0 3 8 2 2 8 1 0 0 0 24 WIND DIRECTION (PREVAILING) 315 315 315 315 270 360 360 135 360 315 315 315 315 PREVAILING WIND SPEED(KNOTS) 5.4 5.9 5.9 6.2 8.3 11.5 12.1 9.2 12.7 4.6 3.7 5.7 5.4 PREVAILING WIND PERCENT 25.8 30.8 27.8 22.9 21.0 26.7 25.0 14.5 15.4 14.9 16.3 27.4 18.9 CALMS PERCENT OF WIND 47.6 39.3 29.4 21.7 24.6 22.9 21.0 30.6 32.9 47.6 50.8 37.5 33.8 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 308 324 338 292 300 21 41 49 19 355 8 294 356 VECTOR WIND MAGNITUDE(KNOTS) 1.8 2.6 1.8 2.7 3.1 4.7 5.4 3.3 2.4 0.9 0.6 1.5 1.9 WIND STEADINESES (MEAN %) 69.2 63.4 34.0 46.6 50.8 63.5 65.9 51.6 41.4 29.0 20.7 41.7 37.3 WIND SPEED (MEAN KNOTS) 2.6 4.1 5.3 5.8 6.1 7.4 8.2 6.4 5.8 3.1 2.9 3.6 5.1 FASTEST WIND DIRECTION 250 10 120 240 10 80 10 20 10 40 10 10 80 FASTEST WIND SPEED (KNOTS) 17 23 23 25 23 31 31 23 31 17 25 19 31 DAY 27 21 5 5 24 22 11 6 26 12 15 12 DAYS WITH SKY CLEAR (0-2)/8 12 9 6 10 19 28 27 29 30 14 14 14 212 DAYS WITH P.CLOUDY (3-6)/8 11 8 10 14 9 2 4 2 0 14 13 6 93 DAYS WITH CLOUDY (7-8)/8 8 11 15 6 3 0 0 0 0 3 3 11 60 DAYS WITH VISIBILITY =< 2 KM 9 5 5 2 3 0 0 0 0 1 0 4 29 DURATION OF SUNSHINE HOURS 154.9 141.4 143.3 190.0 275.0 324.8 348.8 344.0 312.7 214.0 190.2 137.1 2776.2 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.1 842.2 840.3 841.4 839.1 839.5 837.5 839.0 843.1 845.5 845.4 841.3 841.4 MAX. QFE PRESSURE IN HPA 849.9 852.0 847.1 846.8 845.3 845.5 842.7 843.1 848.8 849.6 850.7 849.7 852.0 DAY-HOUR 12- 6 15- 6 29- 6 19- 6 24-21 22-21 11-18 23- 6 16- 6 13- 6 24- 6 17- 6 MIN. QFE PRESSURE IN HPA 833.8 834.6 829.4 833.0 832.0 830.2 831.5 833.4 836.1 841.3 839.7 831.9 829.4 DAY-HOUR 25-12 4- 9 6-15 4-15 22-15 11-15 13-15 11-15 3-12 4-12 4- 9 31-21 MEAN QNH PRESSURE IN HPA 1018.0 1018.1 1015.9 1017.1 1014.4 1014.9 1012.6 1014.3 1019.2 1021.9 1021.9 1017.0 1017.1 MAX. QNH PRESSURE IN HPA 1027.1 1029.5 1023.8 1023.5 1021.7 1021.9 1018.7 1019.2 1025.8 1026.7 1028.0 1026.8 1029.5 DAY-HOUR 12- 6 15- 6 29- 6 19- 6 24-21 22-21 11-18 23- 6 16- 6 13- 6 24- 6 17- 6 MIN. QNH PRESSURE IN HPA 1008.3 1009.2 1003.2 1007.4 1006.2 1004.1 1005.6 1007.8 1011.0 1017.0 1015.2 1006.1 1003.2 DAY-HOUR 25-12 4- 9 6-15 4-15 22-15 11-15 13-15 11-15 3-12 4-12 4- 9 31-21 MEAN QFF PRESSURE IN HPA 1022.9 1023.1 1016.2 1011.9 1007.2 1004.4 1000.0 1002.1 1010.0 1016.2 1020.3 1021.7 1013.0 MAX. QFF PRESSURE IN HPA 1033.9 1038.9 1029.3 1022.0 1020.6 1012.7 1010.9 1011.8 1021.9 1022.6 1030.7 1036.8 1038.9 DAY-HOUR 13- 6 15- 3 11- 6 14- 6 24-21 17- 6 12- 3 27- 3 27- 3 13- 3 27- 3 17-18 MIN. QFF PRESSURE IN HPA 1012.6 1008.9 1003.1 1000.5 998.0 992.5 993.4 994.5 998.4 1009.6 1009.4 1007.9 992.5 DAY-HOUR 4-21 20-21 6-15 9-12 16-21 11-12 23-12 6- 0 3-12 4-12 4- 9 4-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 842.2 841.9 840.0 841.2 839.0 839.6 837.7 839.1 843.1 845.4 845.5 841.4 841.3 MAX. QFE PRESSURE IN HPA 849.2 850.1 845.1 846.3 844.8 844.3 841.5 842.3 848.0 849.0 849.3 848.1 850.1 DAY 13 15 30 29 25 17 12 27 16 13 27 17 MIN. QFE PRESSURE IN HPA 834.3 835.0 830.3 834.1 833.2 833.6 834.0 835.2 837.7 841.9 840.7 836.3 830.3 DAY 25 21 7 5 23 12 14 6 8 4 5 2 MEAN QNH PRESSURE IN HPA 1018.1 1017.8 1015.5 1016.9 1014.4 1015.0 1012.8 1014.4 1019.2 1021.8 1022.0 1017.2 1017.1 MAX. QNH PRESSURE IN HPA 1026.3 1027.3 1021.5 1022.9 1021.1 1020.5 1017.3 1018.2 1024.9 1026.0 1026.4 1025.0 1027.3 DAY 13 15 30 29 25 17 12 27 16 13 27 17 MIN. QNH PRESSURE IN HPA 1008.9 1009.7 1004.2 1008.7 1007.6 1008.1 1008.5 1009.9 1012.9 1017.7 1016.4 1011.2 1004.2 DAY 25 21 7 5 23 12 14 6 8 4 5 2 MEAN QFF PRESSURE IN HPA 1022.5 1022.2 1015.6 1011.6 1007.2 1004.4 999.9 1001.8 1009.4 1015.5 1019.7 1021.2 1012.6 MAX. QFF PRESSURE IN HPA 1031.8 1036.6 1026.0 1020.5 1019.5 1010.4 1010.2 1009.2 1019.4 1020.1 1028.1 1033.5 1036.6 DAY 13 15 12 14 25 18 12 27 27 17 27 18 MIN. QFF PRESSURE IN HPA 1013.7 1009.3 1005.3 1002.3 999.6 996.2 995.6 994.5 1000.8 1010.6 1010.7 1010.4 994.5 DAY 5 21 7 10 22 12 8 6 8 4 4 2 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.1 842.0 840.3 841.7 839.6 840.3 838.5 839.9 843.8 845.7 845.7 841.4 841.8 MAX. QFE PRESSURE IN HPA 849.3 850.7 845.6 846.3 845.0 845.0 842.1 842.7 848.0 849.3 849.7 848.1 850.7 DAY 13 15 29 19 25 23 12 23 16 13 24 17 MIN. QFE PRESSURE IN HPA 834.1 835.1 830.3 835.0 834.2 833.7 835.1 835.9 838.2 842.3 841.1 836.8 830.3 DAY 25 4 7 5 22 11 14 6 8 15 4 2 MEAN QNH PRESSURE IN HPA 1018.0 1017.9 1015.8 1017.5 1015.1 1015.9 1013.8 1015.4 1020.0 1022.2 1022.2 1017.1 1017.6 MAX. QNH PRESSURE IN HPA 1026.4 1028.0 1022.1 1022.9 1021.4 1021.4 1018.0 1018.7 1024.9 1026.4 1026.8 1025.0 1028.0 DAY 13 15 29 19 25 23 12 23 16 13 24 17 MIN. QNH PRESSURE IN HPA 1008.7 1009.8 1004.2 1009.7 1008.8 1008.2 1009.8 1010.8 1013.4 1018.2 1016.8 1011.8 1004.2 DAY 25 4 7 5 22 11 14 6 8 15 4 2 MEAN QFF PRESSURE IN HPA 1023.5 1023.5 1016.7 1013.1 1008.3 1006.3 1002.1 1004.3 1012.1 1017.6 1021.9 1022.4 1014.3 MAX. QFF PRESSURE IN HPA 1033.6 1038.9 1028.2 1021.2 1019.7 1012.5 1010.9 1011.8 1021.9 1022.6 1030.7 1035.0 1038.9 DAY 13 15 11 14 25 17 12 27 27 13 27 18 MIN. QFF PRESSURE IN HPA 1014.6 1012.2 1004.8 1003.9 1000.3 996.8 997.2 996.2 1003.0 1012.6 1011.4 1012.0 996.2 DAY 31 21 7 10 22 11 8 6 8 15 4 2 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.9 843.0 841.1 842.3 839.9 840.5 838.7 840.2 844.3 846.6 846.6 842.1 842.3 MAX. QFE PRESSURE IN HPA 849.9 852.0 847.1 846.8 844.8 845.3 842.3 843.1 848.8 849.6 850.7 849.7 852.0 DAY 12 15 29 19 25 23 11 23 16 13 24 17 MIN. QFE PRESSURE IN HPA 835.1 835.6 831.4 835.9 834.6 833.4 835.0 836.4 838.6 843.4 841.5 837.4 831.4 DAY 26 4 6 5 22 11 15 11 8 4 4 25 MEAN QNH PRESSURE IN HPA 1019.0 1019.0 1016.8 1018.2 1015.4 1016.1 1014.0 1015.8 1020.6 1023.2 1023.2 1017.9 1018.3 MAX. QNH PRESSURE IN HPA 1027.1 1029.5 1023.8 1023.5 1021.1 1021.7 1018.2 1019.2 1025.8 1026.7 1028.0 1026.8 1029.5 DAY 12 15 29 19 25 23 11 23 16 13 24 17 MIN. QNH PRESSURE IN HPA 1009.8 1010.4 1005.5 1010.8 1009.2 1007.8 1009.7 1011.3 1013.9 1019.5 1017.3 1012.5 1005.5 DAY 26 4 6 5 22 11 15 11 8 4 4 25 MEAN QFF PRESSURE IN HPA 1024.5 1024.3 1017.4 1013.0 1008.0 1005.6 1001.3 1003.5 1011.2 1017.5 1022.0 1023.0 1014.3 MAX. QFF PRESSURE IN HPA 1033.9 1038.7 1029.3 1022.0 1017.8 1012.7 1009.8 1009.8 1019.9 1021.5 1030.3 1036.8 1038.7 DAY 13 15 11 14 25 17 11 27 27 13 27 17 MIN. QFF PRESSURE IN HPA 1015.5 1014.1 1005.7 1005.4 1000.7 994.7 995.5 996.7 1001.5 1012.9 1012.3 1012.7 994.7 DAY 31 4 6 10 28 11 7 6 8 4 4 4 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.1 842.5 840.7 841.5 839.3 839.7 837.8 839.2 843.3 845.7 845.4 841.2 841.5 MAX. QFE PRESSURE IN HPA 849.0 851.4 847.0 846.5 844.0 845.0 842.1 842.1 847.7 848.6 849.4 848.4 851.4 DAY 12 15 29 19 25 23 11 22 16 20 24 17 MIN. QFE PRESSURE IN HPA 834.6 834.6 830.7 833.5 833.2 831.9 834.4 835.1 837.6 842.3 839.7 834.9 830.7 DAY 25 4 6 4 22 11 15 11 3 4 4 31 MEAN QNH PRESSURE IN HPA 1018.0 1018.4 1016.3 1017.2 1014.7 1015.2 1013.0 1014.6 1019.4 1022.1 1021.8 1017.0 1017.3 MAX. QNH PRESSURE IN HPA 1026.0 1028.8 1023.7 1023.1 1020.2 1021.4 1018.0 1018.0 1024.5 1025.6 1026.5 1025.3 1028.8 DAY 12 15 29 19 25 23 11 22 16 20 24 17 MIN. QNH PRESSURE IN HPA 1009.2 1009.2 1004.7 1008.0 1007.6 1006.1 1009.0 1009.8 1012.7 1018.2 1015.2 1009.6 1004.7 DAY 25 4 6 4 22 11 15 11 3 4 4 31 MEAN QFF PRESSURE IN HPA 1022.3 1022.9 1016.3 1011.5 1007.2 1004.2 1000.0 1001.8 1009.8 1015.7 1019.4 1020.9 1012.7 MAX. QFF PRESSURE IN HPA 1030.7 1036.8 1028.6 1019.9 1016.0 1010.9 1009.3 1007.7 1017.1 1019.0 1026.3 1033.6 1036.8 DAY 12 15 11 14 5 17 11 27 26 21 27 17 MIN. QFF PRESSURE IN HPA 1013.8 1011.1 1006.0 1002.8 999.0 994.0 995.3 995.8 1000.0 1011.1 1009.4 1009.7 994.0 DAY 4 4 6 4 22 11 23 6 3 4 4 4 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 841.4 841.6 839.8 840.5 838.3 838.5 836.4 837.7 841.8 844.6 844.4 840.6 840.5 MAX. QFE PRESSURE IN HPA 848.6 850.5 845.2 845.1 842.6 843.9 841.5 840.7 845.9 847.4 848.3 847.6 850.5 DAY 12 15 12 19 25 23 11 27 16 27 24 17 MIN. QFE PRESSURE IN HPA 833.8 835.6 829.6 833.2 832.2 830.4 832.7 833.8 836.1 841.3 840.1 833.4 829.6 DAY 25 4 6 9 22 11 13 11 3 4 4 25 MEAN QNH PRESSURE IN HPA 1017.2 1017.4 1015.3 1016.1 1013.5 1013.7 1011.4 1012.9 1017.7 1020.9 1020.6 1016.2 1016.1 MAX. QNH PRESSURE IN HPA 1025.6 1027.8 1021.6 1021.5 1018.6 1020.1 1017.3 1016.4 1022.4 1024.2 1025.2 1024.4 1027.8 DAY 12 15 12 19 25 23 11 27 16 27 24 17 MIN. QNH PRESSURE IN HPA 1008.3 1010.4 1003.4 1007.6 1006.4 1004.3 1007.0 1008.3 1011.0 1017.0 1015.7 1007.8 1003.4 DAY 25 4 6 9 22 11 13 11 3 4 4 25 MEAN QFF PRESSURE IN HPA 1021.4 1021.8 1015.3 1010.7 1006.3 1003.1 998.4 1000.3 1008.0 1014.6 1018.4 1020.3 1011.6 MAX. QFF PRESSURE IN HPA 1029.6 1035.4 1026.6 1019.1 1016.6 1010.2 1008.6 1006.4 1017.0 1018.3 1025.0 1032.3 1035.4 DAY 11 15 12 14 24 17 11 27 26 28 27 17 MIN. QFF PRESSURE IN HPA 1012.9 1011.9 1003.7 1000.5 998.2 992.5 993.4 994.7 998.4 1009.6 1010.0 1007.9 992.5 DAY 24 20 6 9 22 11 23 6 3 4 4 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.9 842.1 840.0 840.7 838.1 838.2 836.1 837.5 841.9 844.9 844.9 841.1 840.6 MAX. QFE PRESSURE IN HPA 849.2 850.5 845.2 845.0 843.5 844.2 841.5 840.8 846.5 848.9 848.3 848.0 850.5 DAY 12 15 12 28 24 22 11 27 15 20 24 17 MIN. QFE PRESSURE IN HPA 834.3 835.7 829.4 833.0 832.0 830.2 831.5 833.4 836.2 841.8 840.0 832.5 829.4 DAY 24 20 6 4 22 11 13 11 3 3 4 31 MEAN QNH PRESSURE IN HPA 1017.7 1017.9 1015.5 1016.3 1013.3 1013.4 1011.0 1012.6 1017.8 1021.2 1021.2 1016.8 1016.2 MAX. QNH PRESSURE IN HPA 1026.3 1027.8 1021.6 1021.4 1019.6 1020.4 1017.3 1016.5 1023.1 1025.9 1025.2 1024.9 1027.8 DAY 12 15 12 28 24 22 11 27 15 20 24 17 MIN. QNH PRESSURE IN HPA 1008.9 1010.5 1003.2 1007.4 1006.2 1004.1 1005.6 1007.8 1011.1 1017.6 1015.5 1006.8 1003.2 DAY 24 20 6 4 22 11 13 11 3 3 4 31 MEAN QFF PRESSURE IN HPA 1023.1 1023.5 1016.3 1011.7 1006.5 1003.8 999.2 1001.5 1009.9 1016.5 1020.9 1022.1 1012.9 MAX. QFF PRESSURE IN HPA 1032.3 1037.2 1028.3 1018.6 1017.6 1011.2 1009.8 1008.4 1019.2 1021.3 1028.5 1036.0 1037.2 DAY 11 15 11 14 24 17 11 27 26 20 27 17 MIN. QFF PRESSURE IN HPA 1013.5 1011.9 1003.1 1001.6 999.2 992.8 993.6 995.1 1000.9 1012.1 1010.8 1010.6 992.8 DAY 24 20 6 9 22 11 27 5 8 3 4 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 842.2 842.5 840.5 841.6 839.2 839.5 837.3 838.9 843.3 845.6 845.6 841.4 841.5 MAX. QFE PRESSURE IN HPA 849.4 850.5 845.5 846.6 844.9 845.0 842.7 841.8 848.5 849.1 848.9 848.3 850.5 DAY 12 15 29 28 24 22 11 31 15 20 23 17 MIN. QFE PRESSURE IN HPA 834.5 835.6 829.7 834.0 833.1 832.2 832.2 834.8 837.8 842.4 840.8 832.0 829.7 DAY 24 20 6 4 22 11 13 11 7 3 4 31 MEAN QNH PRESSURE IN HPA 1018.1 1018.5 1016.1 1017.4 1014.6 1014.9 1012.4 1014.3 1019.4 1022.1 1022.0 1017.1 1017.2 MAX. QNH PRESSURE IN HPA 1026.5 1027.8 1021.9 1023.2 1021.2 1021.4 1018.7 1017.6 1025.4 1026.1 1025.9 1025.2 1027.8 DAY 12 15 29 28 24 22 11 31 15 20 23 17 MIN. QNH PRESSURE IN HPA 1009.1 1010.4 1003.5 1008.5 1007.5 1006.4 1006.4 1009.5 1013.0 1018.3 1016.5 1006.2 1003.5 DAY 24 20 6 4 22 11 13 11 7 3 4 31 MEAN QFF PRESSURE IN HPA 1023.5 1023.8 1016.6 1012.1 1007.2 1004.3 999.6 1001.9 1010.0 1016.4 1020.8 1022.3 1013.2 MAX. QFF PRESSURE IN HPA 1032.7 1035.9 1028.4 1019.9 1018.5 1011.7 1010.6 1008.1 1018.8 1020.9 1027.8 1036.8 1036.8 DAY 11 15 11 13 4 17 11 26 26 16 23 17 MIN. QFF PRESSURE IN HPA 1013.2 1010.6 1003.8 1002.1 999.7 994.7 993.8 995.0 1000.7 1011.1 1012.0 1011.8 993.8 DAY 4 20 6 9 16 11 13 5 7 3 4 4 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 842.1 842.3 840.3 841.5 839.3 839.7 837.7 839.3 843.4 845.5 845.6 841.4 841.5 MAX. QFE PRESSURE IN HPA 849.4 849.6 845.3 846.8 845.3 845.5 842.4 842.1 848.4 848.9 849.2 847.9 849.6 DAY 12 14 29 28 24 22 11 31 15 12 26 16 MIN. QFE PRESSURE IN HPA 834.3 835.1 829.7 833.9 833.5 833.0 832.7 835.0 837.8 842.2 840.4 831.9 829.7 DAY 24 20 6 4 22 11 13 11 7 3 30 31 MEAN QNH PRESSURE IN HPA 1017.9 1018.2 1015.9 1017.3 1014.8 1015.2 1012.8 1014.7 1019.6 1022.0 1022.0 1017.1 1017.3 MAX. QNH PRESSURE IN HPA 1026.5 1026.7 1021.7 1023.5 1021.7 1021.9 1018.3 1018.0 1025.3 1025.9 1026.3 1024.7 1026.7 DAY 12 14 29 28 24 22 11 31 15 12 26 16 MIN. QNH PRESSURE IN HPA 1008.9 1009.8 1003.5 1008.4 1008.0 1007.4 1007.0 1009.7 1013.0 1018.1 1016.0 1006.1 1003.5 DAY 24 20 6 4 22 11 13 11 7 3 30 31 MEAN QFF PRESSURE IN HPA 1022.2 1022.7 1015.8 1011.5 1007.2 1004.1 999.7 1001.8 1010.0 1015.5 1019.7 1021.2 1012.6 MAX. QFF PRESSURE IN HPA 1032.0 1035.6 1027.0 1020.4 1020.6 1010.5 1010.6 1007.9 1019.1 1021.2 1026.7 1033.9 1035.6 DAY 12 14 11 13 24 17 11 26 26 16 26 17 MIN. QFF PRESSURE IN HPA 1012.6 1008.9 1005.3 1001.2 998.0 995.5 994.5 994.8 1001.7 1010.2 1010.8 1011.2 994.5 DAY 4 20 6 9 16 11 13 5 3 3 4 1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -6.0 -2.8 0.3 9.3 11.7 18.9 23.5 20.1 16.9 12.6 7.2 -0.0 9.3 MINIMUN AIR TEMPERATURE (C) -10.3 -7.1 -3.9 3.5 6.5 11.7 15.7 13.3 8.6 4.9 1.5 -3.0 3.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 28 23 15 0 0 0 0 0 0 0 2 10 78 DAYS WITH FREEZING MIN.<= 0 31 26 22 6 2 0 0 0 0 1 7 26 121 TEMPERATURE RECORDS LOWEST(C) -19.4 -16.2 -13.6 -2.2 0.0 8.2 9.2 7.8 2.2 -0.6 -7.6 -13.4 -19.4 DAY 28 13 1 2 4 9 12 31 29 8 28 29 MAXIMUM AIR TEMPERATURE (C) -1.6 1.9 5.3 15.8 17.3 26.1 32.3 27.9 25.8 21.0 14.4 4.0 15.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 3 24 12 0 0 0 0 39 DAYS WITH MAXIMUM TEMP. <= 0 18 5 4 0 0 0 0 0 0 0 0 3 30 TEMPERATURE RECORDS HIGHEST(C) 5.0 6.4 14.4 23.5 27.6 34.2 36.5 34.2 29.2 25.6 20.0 10.1 36.5 DAY 1 20 30 12 30 30 22 24 14 4 20 14 DIF. BETWEEN (MAX.-MIN.) (C) 8.7 9.0 9.2 12.3 10.8 14.4 16.6 14.6 17.2 16.1 12.9 7.0 12.4 MEAN DAILY TEMP. (MDT) (C) -6.0 -2.6 0.7 9.6 11.9 18.9 24.0 20.6 17.2 13.0 8.0 0.5 9.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 9.3 107.8 31.2 0.0 0.0 0.0 0.0 148.4 HEATING DEG. DAYS(BASE 18 0C) 743.1 597.2 537.2 250.7 185.8 18.2 4.6 13.7 37.1 156.3 301.1 541.7 3386.6 DEWPOINT (MEAN C) -10.3 -8.4 -5.5 -0.3 4.6 7.8 8.7 7.1 2.8 -1.8 -2.4 -4.6 -0.2 MIXING RATIO (G/KG) 2.23 2.56 3.27 4.59 6.57 8.14 8.63 7.73 5.74 4.12 4.04 3.42 5.09 VAPOUR PRESSURE (HPA) 3.00 3.43 4.39 6.15 8.80 10.83 11.46 10.33 7.71 5.55 5.45 4.60 6.81 SATURATION DEF. (HPA) 1.14 1.79 2.28 6.26 5.85 12.09 19.40 14.62 12.89 10.01 5.35 1.68 7.78 RELATIVE HUMIDITY (MEAN %) 73 67 67 56 66 53 43 48 44 42 55 74 57 RELATIVE HUMIDITY (MAX. %) 86 82 84 80 88 77 64 67 68 62 77 88 77 RELATIVE HUMIDITY (MIN. %) 60 51 48 35 45 31 24 29 21 22 32 53 38 RELATIVE HUMIDITY (MEAN% 03UTC) 78 73 78 73 81 70 60 64 63 57 71 84 71 RELATIVE HUMIDITY (MEAN% 09UTC) 66 57 56 41 51 36 28 31 24 25 37 62 43 RELATIVE HUMIDITY (MEAN% 15UTC) 72 69 61 45 56 42 32 43 37 37 48 72 51 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 48.0 32.8 42.2 50.2 66.4 30.2 2.0 5.5 0.0 0.0 22.1 33.6 333.0 DAYS WITH PRECIPITATION >=10 0 1 1 2 2 0 0 0 0 0 1 1 8 DAYS WITH PRECIPITATION >= 5 4 3 2 5 4 4 0 1 0 0 2 4 29 DAYS WITH PRECIPITATION >= 1 10 5 10 6 12 6 1 1 0 0 2 6 59 DAYS WITH PRECIPITATION 16 14 13 13 18 13 3 3 0 1 7 16 117 GREATEST DAILY PRECIPITATION 9.0 14.8 15.0 15.0 17.0 6.5 2.0 5.0 0.0 0.0 13.1 13.2 17.0 DAY 8 24 15 14 23 8 6 29 ** ** 25 3 DAY WITH THUNDER STORM 0 0 0 6 8 13 3 2 0 0 0 0 32 DAYS WITH SNOW OR SLEET 17 13 9 1 2 0 0 0 0 0 2 11 55 DAYS WITH DUST 0 2 0 2 2 1 0 1 0 4 2 0 14 WIND DIRECTION (PREVAILING) 315 315 315 270 315 360 360 360 45 315 315 315 315 PREVAILING WIND SPEED(KNOTS) 8.0 6.8 5.4 7.7 6.2 11.0 12.0 11.8 11.2 4.1 5.2 4.1 5.8 PREVAILING WIND PERCENT 32.7 24.1 24.6 17.9 14.1 16.3 15.7 22.6 14.2 16.1 15.8 13.7 15.4 CALMS PERCENT OF WIND 28.2 27.6 28.6 26.7 33.9 35.4 33.9 28.6 35.4 39.1 40.4 48.4 33.9 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 311 272 321 310 353 347 48 25 16 343 252 302 340 VECTOR WIND MAGNITUDE(KNOTS) 3.5 2.7 2.7 2.8 1.6 1.7 2.9 4.7 1.9 1.6 1.0 0.4 1.7 WIND STEADINESES (MEAN %) 64.8 51.9 56.3 43.1 31.4 33.3 51.8 74.6 43.2 38.1 25.0 16.0 34.7 WIND SPEED (MEAN KNOTS) 5.4 5.2 4.8 6.5 5.1 5.1 5.6 6.3 4.4 4.2 4.0 2.5 4.9 FASTEST WIND DIRECTION 30 240 360 360 20 190 20 10 30 20 190 30 20 FASTEST WIND SPEED (KNOTS) 31 29 31 27 33 29 35 35 29 35 31 16 35 DAY 24 24 9 17 1 3 11 28 29 14 25 2 DAYS WITH SKY CLEAR (0-2)/8 10 9 11 8 9 20 23 27 29 26 13 6 191 DAYS WITH P.CLOUDY (3-6)/8 16 12 12 14 9 9 8 4 1 5 13 12 115 DAYS WITH CLOUDY (7-8)/8 5 8 8 8 13 1 0 0 0 0 4 13 60 DAYS WITH VISIBILITY =< 2 KM 11 1 3 1 3 0 0 0 0 0 1 6 26 DURATION OF SUNSHINE HOURS 150.7 151.4 186.3 204.1 202.2 312.5 317.0 328.2 288.1 278.3 181.9 107.3 2708.0 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.3 838.4 840.5 839.6 841.7 838.9 838.2 841.3 843.4 844.8 844.7 842.3 841.3 MAX. QFE PRESSURE IN HPA 850.8 846.7 850.5 844.0 846.9 844.4 843.5 847.7 848.5 849.8 853.5 847.9 853.5 DAY-HOUR 10- 6 15-21 12- 6 7-21 29- 6 11- 6 7- 6 31- 6 29- 6 29- 6 4- 6 1- 6 MIN. QFE PRESSURE IN HPA 830.6 829.2 829.9 833.1 834.7 833.8 833.0 834.7 837.6 840.7 832.8 837.7 829.2 DAY-HOUR 30-15 24-12 31- 0 18- 3 9-12 27-15 9-15 1-12 17-12 5-15 25- 0 28- 0 MEAN QNH PRESSURE IN HPA 1017.1 1013.7 1016.1 1015.1 1017.5 1014.3 1013.5 1017.1 1019.5 1021.1 1021.0 1018.2 1017.0 MAX. QNH PRESSURE IN HPA 1028.1 1023.3 1027.8 1020.2 1023.6 1020.7 1019.6 1024.5 1025.4 1027.0 1031.3 1024.7 1031.3 DAY-HOUR 10- 6 15-21 12- 6 7-21 29- 6 11- 6 7- 6 31- 6 29- 6 29- 6 4- 6 1- 6 MIN. QNH PRESSURE IN HPA 1004.6 1002.9 1003.8 1007.5 1009.4 1008.3 1007.4 1009.4 1012.7 1016.4 1007.1 1012.9 1002.9 DAY-HOUR 30-15 24-12 31- 0 18- 3 9-12 27-15 9-15 1-12 17-12 5-15 25- 0 28- 0 MEAN QFF PRESSURE IN HPA 1024.7 1018.8 1019.2 1011.8 1012.5 1004.4 1000.8 1006.5 1011.2 1015.8 1019.2 1021.4 1013.9 MAX. QFF PRESSURE IN HPA 1041.6 1031.5 1036.5 1020.8 1024.9 1013.7 1012.2 1019.0 1023.7 1024.0 1030.2 1033.6 1041.6 DAY-HOUR 10- 6 15-18 12- 6 8- 3 2-18 7- 6 12- 3 31- 3 29- 3 30- 3 4- 3 29- 6 MIN. QFF PRESSURE IN HPA 1010.0 1002.9 1001.5 1001.7 1003.9 996.5 993.2 995.5 1003.1 1008.4 1002.7 1013.0 993.2 DAY-HOUR 2-21 24-12 30-21 22-12 9-12 27-12 31-12 1- 0 17-12 24-12 25- 0 14-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 840.9 838.2 840.2 839.5 841.6 839.0 838.5 841.2 843.3 844.8 844.5 842.3 841.2 MAX. QFE PRESSURE IN HPA 850.1 846.5 848.7 843.5 845.4 843.8 842.9 846.5 847.3 848.7 852.2 847.0 852.2 DAY 10 16 12 8 27 7 6 31 29 30 4 1 MIN. QFE PRESSURE IN HPA 831.7 832.6 829.9 833.6 836.1 834.6 835.1 835.5 839.5 841.6 832.8 837.7 829.9 DAY 31 25 31 18 4 28 10 1 18 9 25 28 MEAN QNH PRESSURE IN HPA 1016.6 1013.5 1015.7 1014.9 1017.3 1014.4 1013.8 1016.9 1019.4 1021.1 1020.8 1018.2 1016.9 MAX. QNH PRESSURE IN HPA 1027.3 1023.1 1025.7 1019.6 1021.8 1020.0 1018.9 1023.1 1024.0 1025.7 1029.8 1023.7 1029.8 DAY 10 16 12 8 27 7 6 31 29 30 4 1 MIN. QNH PRESSURE IN HPA 1005.9 1006.9 1003.8 1008.1 1011.0 1009.2 1009.8 1010.3 1014.9 1017.4 1007.1 1012.9 1003.8 DAY 31 25 31 18 4 28 10 1 18 9 25 28 MEAN QFF PRESSURE IN HPA 1023.8 1018.1 1018.5 1011.4 1012.3 1004.5 1000.7 1005.8 1010.7 1015.3 1018.3 1020.9 1013.4 MAX. QFF PRESSURE IN HPA 1038.5 1031.3 1033.6 1019.4 1022.9 1010.9 1009.6 1017.3 1020.8 1021.3 1027.5 1031.0 1038.5 DAY 10 16 12 8 2 8 13 31 30 16 4 29 MIN. QFF PRESSURE IN HPA 1011.4 1007.7 1003.4 1005.5 1006.2 996.9 995.4 995.5 1004.2 1009.6 1002.7 1014.3 995.4 DAY 3 21 31 18 10 28 24 1 18 11 25 15 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 841.1 838.3 840.5 839.8 841.9 839.5 839.3 842.0 844.0 845.2 844.9 842.3 841.6 MAX. QFE PRESSURE IN HPA 849.7 845.8 849.4 843.7 846.1 844.0 843.2 847.1 847.7 849.2 852.5 847.3 852.5 DAY 10 16 12 8 29 11 6 31 29 30 4 1 MIN. QFE PRESSURE IN HPA 832.8 832.8 830.2 833.1 835.6 835.0 836.1 836.5 840.1 842.4 834.5 839.1 830.2 DAY 31 25 31 18 4 28 10 1 17 9 25 27 MEAN QNH PRESSURE IN HPA 1016.8 1013.5 1016.1 1015.3 1017.8 1015.0 1014.7 1017.9 1020.3 1021.6 1021.2 1018.3 1017.4 MAX. QNH PRESSURE IN HPA 1026.8 1022.3 1026.5 1019.8 1022.6 1020.2 1019.3 1023.8 1024.5 1026.3 1030.1 1024.0 1030.1 DAY 10 16 12 8 29 11 6 31 29 30 4 1 MIN. QNH PRESSURE IN HPA 1007.1 1007.1 1004.1 1007.5 1010.4 1009.7 1011.0 1011.4 1015.7 1018.3 1009.1 1014.5 1004.1 DAY 31 25 31 18 4 28 10 1 17 9 25 27 MEAN QFF PRESSURE IN HPA 1024.9 1019.3 1019.8 1012.6 1013.3 1005.7 1002.7 1008.4 1013.4 1017.7 1020.5 1022.0 1015.0 MAX. QFF PRESSURE IN HPA 1040.3 1031.2 1035.4 1020.8 1023.9 1011.8 1012.2 1019.0 1023.7 1024.0 1030.2 1031.6 1040.3 DAY 10 16 12 8 2 7 12 31 29 30 4 29 MIN. QFF PRESSURE IN HPA 1013.4 1007.8 1003.8 1007.3 1006.8 998.3 997.5 997.7 1007.1 1012.2 1006.2 1015.8 997.5 DAY 1 24 31 14 9 28 26 1 25 26 25 15 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.1 839.1 841.4 840.4 842.3 839.6 839.6 842.4 844.7 845.9 845.7 843.3 842.2 MAX. QFE PRESSURE IN HPA 850.8 845.8 850.5 843.9 846.9 844.4 843.5 847.7 848.5 849.8 853.5 847.9 853.5 DAY 10 16 12 8 29 11 7 31 29 29 4 1 MIN. QFE PRESSURE IN HPA 835.1 833.2 831.2 836.6 836.0 835.5 836.2 836.9 840.5 843.5 835.9 840.0 831.2 DAY 30 25 31 18 4 27 10 1 17 5 25 27 MEAN QNH PRESSURE IN HPA 1017.9 1014.4 1017.1 1016.1 1018.3 1015.1 1015.0 1018.4 1021.0 1022.5 1022.2 1019.4 1018.1 MAX. QNH PRESSURE IN HPA 1028.1 1022.3 1027.8 1020.1 1023.6 1020.7 1019.6 1024.5 1025.4 1027.0 1031.3 1024.7 1031.3 DAY 10 16 12 8 29 11 7 31 29 29 4 1 MIN. QNH PRESSURE IN HPA 1009.8 1007.6 1005.3 1011.6 1010.9 1010.3 1011.1 1011.9 1016.1 1019.6 1010.8 1015.5 1005.3 DAY 30 25 31 18 4 27 10 1 17 5 25 27 MEAN QFF PRESSURE IN HPA 1026.1 1019.9 1020.5 1012.7 1013.3 1005.1 1002.5 1007.8 1012.6 1017.3 1020.8 1022.9 1015.1 MAX. QFF PRESSURE IN HPA 1041.6 1031.4 1036.5 1019.0 1024.7 1013.7 1011.6 1017.4 1021.9 1023.8 1029.8 1033.6 1041.6 DAY 10 16 12 8 2 7 12 31 29 30 4 29 MIN. QFF PRESSURE IN HPA 1014.1 1008.5 1004.4 1006.1 1007.4 998.5 998.0 997.7 1006.3 1012.4 1009.4 1017.6 997.7 DAY 1 24 31 22 9 27 31 1 17 26 25 17 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.5 838.5 840.9 839.7 841.8 839.0 838.6 841.6 843.6 844.8 844.5 842.2 841.4 MAX. QFE PRESSURE IN HPA 850.0 844.9 850.0 842.7 846.7 843.8 843.0 846.7 847.2 848.6 852.1 847.2 852.1 DAY 10 16 12 8 14 11 7 31 29 29 4 1 MIN. QFE PRESSURE IN HPA 833.8 831.8 832.0 836.1 835.6 835.0 834.8 836.3 838.9 842.3 834.2 838.9 831.8 DAY 30 24 31 17 9 27 10 1 17 5 25 27 MEAN QNH PRESSURE IN HPA 1017.3 1013.8 1016.6 1015.2 1017.6 1014.4 1013.9 1017.4 1019.7 1021.1 1020.8 1018.1 1017.2 MAX. QNH PRESSURE IN HPA 1027.2 1021.2 1027.2 1018.7 1023.3 1020.0 1019.0 1023.3 1023.9 1025.6 1029.6 1023.9 1029.6 DAY 10 16 12 8 14 11 7 31 29 29 4 1 MIN. QNH PRESSURE IN HPA 1008.3 1006.0 1006.2 1011.0 1010.4 1009.7 1009.5 1011.2 1014.2 1018.2 1008.8 1014.2 1006.0 DAY 30 24 31 17 9 27 10 1 17 5 25 27 MEAN QFF PRESSURE IN HPA 1024.5 1018.3 1019.3 1011.5 1012.4 1004.4 1000.7 1006.2 1010.8 1015.1 1017.9 1021.0 1013.5 MAX. QFF PRESSURE IN HPA 1037.4 1028.3 1034.1 1017.0 1024.2 1011.9 1008.9 1015.3 1019.4 1020.5 1027.1 1029.0 1037.4 DAY 10 16 12 3 2 7 12 31 29 29 4 29 MIN. QFF PRESSURE IN HPA 1014.5 1006.0 1004.1 1003.7 1004.4 997.7 994.8 997.2 1003.8 1010.5 1005.6 1015.2 994.8 DAY 1 24 30 22 9 28 31 1 17 11 25 14 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.8 837.8 840.0 838.7 840.9 838.1 837.1 840.1 842.3 843.6 843.7 841.6 840.4 MAX. QFE PRESSURE IN HPA 849.1 844.3 848.7 842.0 845.8 843.6 841.5 845.3 846.2 848.0 850.6 846.6 850.6 DAY 10 15 12 19 2 7 7 31 29 29 4 2 MIN. QFE PRESSURE IN HPA 831.1 829.2 832.0 835.0 834.7 833.9 833.3 834.7 837.6 840.8 834.9 838.1 829.2 DAY 30 24 31 22 9 27 10 1 17 5 25 19 MEAN QNH PRESSURE IN HPA 1016.5 1013.0 1015.6 1014.1 1016.6 1013.3 1012.1 1015.7 1018.2 1019.7 1019.9 1017.4 1016.0 MAX. QNH PRESSURE IN HPA 1026.1 1020.5 1025.7 1017.9 1022.3 1019.7 1017.3 1021.7 1022.8 1024.9 1027.9 1023.2 1027.9 DAY 10 15 12 19 2 7 7 31 29 29 4 2 MIN. QNH PRESSURE IN HPA 1005.2 1002.9 1006.2 1009.7 1009.4 1008.4 1007.7 1009.4 1012.7 1016.5 1009.6 1013.3 1002.9 DAY 30 24 31 22 9 27 10 1 17 5 25 19 MEAN QFF PRESSURE IN HPA 1023.6 1017.6 1018.1 1010.5 1011.5 1003.4 999.1 1004.7 1009.6 1013.8 1017.6 1020.2 1012.5 MAX. QFF PRESSURE IN HPA 1036.8 1027.8 1032.1 1017.3 1023.9 1013.6 1008.3 1014.1 1019.6 1019.4 1025.2 1027.0 1036.8 DAY 10 16 12 19 2 7 12 30 29 29 4 28 MIN. QFF PRESSURE IN HPA 1014.1 1002.9 1004.3 1001.7 1003.9 996.5 993.2 995.7 1003.1 1008.4 1008.5 1013.0 993.2 DAY 16 24 30 22 9 27 31 1 17 24 25 14 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.3 838.2 840.2 838.9 841.2 838.0 836.7 840.0 842.4 844.0 844.4 842.2 840.6 MAX. QFE PRESSURE IN HPA 849.9 845.7 848.9 842.5 845.9 843.1 841.5 845.0 846.5 848.4 851.2 847.3 851.2 DAY 9 15 12 19 2 6 7 31 29 29 3 2 MIN. QFE PRESSURE IN HPA 830.6 830.8 830.4 835.1 836.4 833.8 833.0 835.2 837.8 840.7 836.2 838.6 830.4 DAY 30 24 30 14 9 27 9 18 17 5 25 19 MEAN QNH PRESSURE IN HPA 1017.1 1013.4 1015.7 1014.3 1016.9 1013.2 1011.7 1015.5 1018.3 1020.2 1020.7 1018.1 1016.3 MAX. QNH PRESSURE IN HPA 1027.1 1022.2 1025.9 1018.5 1022.4 1019.2 1017.3 1021.4 1023.1 1025.3 1028.6 1024.0 1028.6 DAY 9 15 12 19 2 6 7 31 29 29 3 2 MIN. QNH PRESSURE IN HPA 1004.6 1004.8 1004.3 1009.8 1011.3 1008.3 1007.4 1009.9 1013.0 1016.4 1011.1 1013.9 1004.3 DAY 30 24 30 14 9 27 9 18 17 5 25 19 MEAN QFF PRESSURE IN HPA 1025.3 1019.1 1019.2 1011.5 1012.3 1003.8 999.7 1006.1 1011.4 1016.2 1020.0 1021.9 1013.9 MAX. QFF PRESSURE IN HPA 1039.1 1029.5 1034.1 1018.6 1024.7 1012.6 1009.3 1015.1 1022.0 1022.2 1028.3 1031.4 1039.1 DAY 10 16 12 19 2 7 12 31 29 29 3 28 MIN. QFF PRESSURE IN HPA 1014.0 1004.7 1002.0 1004.4 1005.4 996.8 993.4 999.8 1004.6 1010.9 1010.1 1016.0 993.4 DAY 30 24 30 14 31 30 31 18 17 5 22 14 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 841.6 838.7 840.8 840.2 842.2 839.1 838.0 841.6 843.5 845.0 845.0 842.5 841.5 MAX. QFE PRESSURE IN HPA 850.3 846.5 849.1 843.9 846.6 844.2 842.9 846.7 847.6 849.5 851.9 846.6 851.9 DAY 4 15 12 19 2 6 7 30 29 29 3 1 MIN. QFE PRESSURE IN HPA 830.8 833.1 831.4 835.7 836.9 834.8 834.8 836.3 839.1 842.0 837.2 838.7 830.8 DAY 30 24 30 14 9 27 31 18 17 8 25 27 MEAN QNH PRESSURE IN HPA 1017.4 1014.0 1016.4 1015.7 1018.1 1014.5 1013.2 1017.4 1019.7 1021.4 1021.4 1018.5 1017.3 MAX. QNH PRESSURE IN HPA 1027.5 1023.1 1026.1 1020.1 1023.2 1020.4 1018.9 1023.3 1024.4 1026.6 1029.4 1023.2 1029.4 DAY 4 15 12 19 2 6 7 30 29 29 3 1 MIN. QNH PRESSURE IN HPA 1004.8 1007.5 1005.5 1010.5 1011.9 1009.5 1009.5 1011.2 1014.5 1017.9 1012.3 1014.0 1004.8 DAY 30 24 30 14 9 27 31 18 17 8 25 27 MEAN QFF PRESSURE IN HPA 1025.5 1019.6 1019.6 1012.4 1013.1 1004.4 1000.7 1006.9 1011.2 1016.2 1020.1 1022.0 1014.3 MAX. QFF PRESSURE IN HPA 1039.8 1031.5 1034.5 1020.5 1024.9 1012.3 1010.4 1016.4 1021.0 1023.5 1028.1 1032.5 1039.8 DAY 9 15 12 7 2 6 12 30 29 29 3 28 MIN. QFF PRESSURE IN HPA 1013.2 1008.3 1002.8 1006.6 1005.9 997.7 994.3 998.4 1005.2 1010.9 1009.2 1015.9 994.3 DAY 30 24 30 22 31 27 31 18 17 5 22 14 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 841.3 838.6 840.5 840.1 842.0 839.1 838.3 841.7 843.5 845.0 844.8 842.2 841.4 MAX. QFE PRESSURE IN HPA 850.2 846.7 848.9 844.0 846.2 844.0 842.3 847.1 847.4 849.1 852.2 846.6 852.2 DAY 9 15 11 7 2 10 7 30 29 29 3 10 MIN. QFE PRESSURE IN HPA 831.3 832.2 830.1 833.6 836.5 834.8 835.2 836.5 839.1 841.8 835.7 837.9 830.1 DAY 30 24 30 17 9 27 31 18 17 8 24 27 MEAN QNH PRESSURE IN HPA 1017.1 1013.9 1016.1 1015.6 1017.8 1014.5 1013.6 1017.5 1019.6 1021.4 1021.1 1018.1 1017.2 MAX. QNH PRESSURE IN HPA 1027.4 1023.3 1025.9 1020.2 1022.8 1020.2 1018.2 1023.8 1024.2 1026.1 1029.8 1023.2 1029.8 DAY 9 15 11 7 2 10 7 30 29 29 3 10 MIN. QNH PRESSURE IN HPA 1005.4 1006.4 1004.0 1008.1 1011.4 1009.5 1009.9 1011.4 1014.5 1017.6 1010.5 1013.1 1004.0 DAY 30 24 30 17 9 27 31 18 17 8 24 27 MEAN QFF PRESSURE IN HPA 1024.4 1018.4 1018.6 1011.8 1012.5 1004.3 1000.3 1006.4 1010.7 1015.3 1018.3 1020.9 1013.5 MAX. QFF PRESSURE IN HPA 1038.5 1031.2 1033.9 1020.1 1023.7 1010.8 1009.5 1016.6 1020.2 1021.9 1027.8 1032.5 1038.5 DAY 9 15 11 7 2 6 12 30 29 15 3 28 MIN. QFF PRESSURE IN HPA 1010.0 1006.9 1001.5 1004.1 1005.7 997.2 994.1 999.0 1004.7 1009.6 1005.4 1014.4 994.1 DAY 2 24 30 17 9 27 31 18 17 10 22 14 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -3.3 -0.7 3.6 11.2 14.9 20.4 22.7 22.2 19.2 11.2 3.1 1.6 10.5 MINIMUN AIR TEMPERATURE (C) -7.0 -4.8 -1.4 5.1 8.6 12.3 15.5 14.9 11.2 4.7 0.2 -2.3 4.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 0 0 0 0 0 2 DAYS WITH MINIMUM TEMP. <=-4 22 17 7 0 0 0 0 0 0 0 6 9 61 DAYS WITH FREEZING MIN.<= 0 29 27 21 0 0 0 0 0 0 2 10 23 112 TEMPERATURE RECORDS LOWEST(C) -15.2 -11.6 -7.0 1.6 1.0 7.4 11.0 10.8 7.0 -0.6 -8.0 -7.6 -15.2 DAY 20 17 23 10 9 23 7 18 28 8 15 1 MAXIMUM AIR TEMPERATURE (C) 0.7 3.9 9.5 17.6 21.0 28.5 30.8 30.4 28.7 18.9 7.4 6.7 17.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 11 18 19 12 0 0 0 60 DAYS WITH MAXIMUM TEMP. <= 0 16 5 0 0 0 0 0 0 0 0 1 1 23 TEMPERATURE RECORDS HIGHEST(C) 7.4 12.0 20.4 26.4 26.8 36.0 36.7 35.6 33.6 27.8 15.7 13.2 36.7 DAY 28 27 31 19 26 30 2 14 1 1 9 24 DIF. BETWEEN (MAX.-MIN.) (C) 7.7 8.7 10.9 12.5 12.4 16.2 15.3 15.5 17.5 14.2 7.2 9.0 12.2 MEAN DAILY TEMP. (MDT) (C) -3.1 -0.4 4.0 11.4 14.8 20.4 23.1 22.7 20.0 11.8 3.8 2.2 10.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 25.8 74.2 64.6 16.0 0.0 0.0 0.0 180.7 HEATING DEG. DAYS(BASE 18 0C) 655.1 516.2 432.6 201.6 106.3 8.2 0.1 0.4 12.1 192.9 426.4 489.8 3041.7 DEWPOINT (MEAN C) -8.7 -6.1 -4.8 0.4 4.7 4.5 8.6 7.2 3.8 -1.1 -0.3 -2.8 0.5 MIXING RATIO (G/KG) 2.45 3.04 3.30 4.89 6.55 6.43 8.54 7.81 6.30 4.34 4.64 3.75 5.17 VAPOUR PRESSURE (HPA) 3.30 4.09 4.44 6.56 8.76 8.59 11.37 10.43 8.44 5.86 6.24 5.07 6.93 SATURATION DEF. (HPA) 1.71 1.95 3.99 7.42 8.98 16.94 17.60 17.73 15.42 8.24 1.70 2.07 8.64 RELATIVE HUMIDITY (MEAN %) 68 70 61 54 55 40 44 42 42 47 81 75 57 RELATIVE HUMIDITY (MAX. %) 82 85 83 77 78 63 66 63 64 68 93 89 76 RELATIVE HUMIDITY (MIN. %) 54 50 39 33 35 22 26 25 21 27 63 57 38 RELATIVE HUMIDITY (MEAN% 03UTC) 74 79 74 70 74 57 58 59 59 63 84 84 70 RELATIVE HUMIDITY (MEAN% 09UTC) 60 58 45 39 42 28 31 28 26 29 69 62 43 RELATIVE HUMIDITY (MEAN% 15UTC) 67 65 53 45 45 29 38 35 34 44 82 73 51 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 32.2 45.9 67.5 68.4 35.6 2.0 1.8 0.6 0.0 14.1 157.6 37.6 463.3 DAYS WITH PRECIPITATION >=10 2 1 3 2 0 0 0 0 0 0 5 2 15 DAYS WITH PRECIPITATION >= 5 2 4 6 5 3 0 0 0 0 1 9 3 33 DAYS WITH PRECIPITATION >= 1 5 5 8 8 9 1 1 0 0 4 12 3 56 DAYS WITH PRECIPITATION 9 12 14 9 13 2 3 3 1 6 16 7 95 GREATEST DAILY PRECIPITATION 13.8 25.1 15.1 19.1 8.0 2.0 1.0 0.6 0.0 7.0 31.5 21.8 31.5 DAY 8 3 8 7 2 1 26 28 ** 31 1 8 DAY WITH THUNDER STORM 0 0 3 8 11 4 4 4 0 1 7 0 42 DAYS WITH SNOW OR SLEET 9 11 12 0 0 0 0 0 0 0 8 7 47 DAYS WITH DUST 1 0 1 2 4 3 0 0 3 0 0 0 14 WIND DIRECTION (PREVAILING) 315 315 315 315 270 315 45 45 360 45 315 315 315 PREVAILING WIND SPEED(KNOTS) 4.3 3.6 4.3 4.0 5.6 3.7 12.6 12.3 11.9 12.7 5.1 6.1 4.4 PREVAILING WIND PERCENT 21.4 20.1 26.2 20.0 20.2 14.2 29.8 19.4 13.3 10.9 12.1 24.2 15.1 CALMS PERCENT OF WIND 37.1 46.4 27.4 28.8 35.1 34.2 27.4 27.4 43.3 47.2 59.2 50.0 38.5 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 307 320 314 263 297 18 34 34 32 20 1 318 3 VECTOR WIND MAGNITUDE(KNOTS) 1.5 1.2 1.1 1.7 1.1 2.1 5.4 4.0 2.2 1.8 0.9 1.9 1.5 WIND STEADINESES (MEAN %) 48.4 50.0 31.4 45.9 33.3 42.0 77.1 62.5 45.8 42.9 47.4 67.9 37.5 WIND SPEED (MEAN KNOTS) 3.1 2.4 3.5 3.7 3.3 5.0 7.0 6.4 4.8 4.2 1.9 2.8 4.0 FASTEST WIND DIRECTION 360 30 310 250 160 20 30 20 20 30 20 30 360 FASTEST WIND SPEED (KNOTS) 47 17 23 23 16 31 35 31 31 27 21 19 47 DAY 14 3 22 20 5 22 4 22 21 19 13 5 DAYS WITH SKY CLEAR (0-2)/8 14 10 12 2 7 24 24 24 26 20 9 8 180 DAYS WITH P.CLOUDY (3-6)/8 9 7 13 18 15 6 7 7 4 8 7 13 114 DAYS WITH CLOUDY (7-8)/8 8 11 6 10 9 0 0 0 0 3 14 10 71 DAYS WITH VISIBILITY =< 2 KM 5 6 3 2 0 1 0 0 0 0 11 6 34 DURATION OF SUNSHINE HOURS 166.5 143.2 204.6 174.4 237.6 350.8 343.0 325.8 300.2 242.4 100.8 ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.7 841.7 840.8 840.6 841.7 839.9 839.9 841.3 842.3 847.8 844.5 845.7 842.4 MAX. QFE PRESSURE IN HPA 851.9 849.4 848.9 847.4 847.3 848.5 845.6 846.4 848.4 853.5 851.8 852.2 853.5 DAY-HOUR 6- 6 9- 6 31- 6 1- 6 8-18 22- 6 27- 6 28-18 22- 6 17- 6 21- 6 26-18 MIN. QFE PRESSURE IN HPA 831.2 834.1 832.3 833.8 835.8 832.7 833.1 835.3 836.8 840.0 832.8 837.9 831.2 DAY-HOUR 9- 0 3-12 8- 3 20-12 6-12 3-12 11-15 11-15 3-12 28-12 11- 3 5- 3 MEAN QNH PRESSURE IN HPA 1018.7 1017.6 1016.5 1016.3 1017.5 1015.4 1015.4 1017.0 1018.2 1024.6 1020.7 1022.2 1018.3 MAX. QNH PRESSURE IN HPA 1029.4 1026.5 1025.9 1024.2 1024.0 1025.4 1022.1 1023.0 1025.3 1031.3 1029.3 1029.8 1031.3 DAY-HOUR 6- 6 9- 6 31- 6 1- 6 8-18 22- 6 27- 6 28-18 22- 6 17- 6 21- 6 26-18 MIN. QNH PRESSURE IN HPA 1005.3 1008.7 1006.5 1008.3 1010.6 1007.0 1007.5 1010.1 1011.8 1015.5 1007.1 1013.1 1005.3 DAY-HOUR 9- 0 3-12 8- 3 20-12 6-12 3-12 11-15 11-15 3-12 28-12 11- 3 5- 3 MEAN QFF PRESSURE IN HPA 1024.4 1021.4 1017.2 1011.7 1010.4 1004.8 1003.2 1005.3 1008.4 1020.3 1021.7 1024.4 1014.4 MAX. QFF PRESSURE IN HPA 1036.1 1032.7 1030.0 1019.9 1023.6 1019.8 1010.7 1013.3 1019.6 1028.2 1032.9 1032.7 1036.1 DAY-HOUR 19-18 9-15 23- 3 1- 3 9- 3 22- 3 20- 3 24- 3 22- 6 20- 3 30- 6 6- 6 MIN. QFF PRESSURE IN HPA 1011.1 1010.1 1004.6 997.7 1003.3 997.2 995.2 997.0 999.7 1007.0 1005.0 1015.3 995.2 DAY-HOUR 9- 0 3- 0 8- 3 20-12 17-12 30-15 2-12 11-12 3-12 1-12 11- 3 5- 9 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 842.6 841.5 840.6 840.8 841.5 840.0 839.9 841.3 842.5 847.8 844.1 845.6 842.4 MAX. QFE PRESSURE IN HPA 850.0 847.6 848.1 846.7 846.4 847.3 844.6 844.6 847.0 852.5 850.9 851.3 852.5 DAY 6 10 31 1 9 22 27 29 16 20 21 27 MIN. QFE PRESSURE IN HPA 831.2 834.2 832.5 836.7 838.0 836.2 836.0 836.5 839.4 842.5 833.8 838.2 831.2 DAY 9 3 22 27 6 4 12 12 14 28 11 5 MEAN QNH PRESSURE IN HPA 1018.6 1017.3 1016.3 1016.4 1017.3 1015.5 1015.5 1017.1 1018.4 1024.6 1020.3 1022.1 1018.3 MAX. QNH PRESSURE IN HPA 1027.2 1024.4 1025.0 1023.3 1023.0 1024.0 1020.9 1020.9 1023.7 1030.1 1028.2 1028.7 1030.1 DAY 6 10 31 1 9 22 27 29 16 20 21 27 MIN. QNH PRESSURE IN HPA 1005.3 1008.8 1006.8 1011.7 1013.2 1011.1 1010.9 1011.4 1014.8 1018.5 1008.3 1013.4 1005.3 DAY 9 3 22 27 6 4 12 12 14 28 11 5 MEAN QFF PRESSURE IN HPA 1023.8 1020.7 1016.6 1011.6 1010.3 1005.0 1002.9 1004.9 1008.1 1019.6 1020.7 1023.9 1014.0 MAX. QFF PRESSURE IN HPA 1033.6 1030.4 1028.0 1018.7 1022.5 1017.5 1008.1 1011.1 1016.9 1025.6 1031.2 1030.2 1033.6 DAY 20 10 23 1 9 22 27 25 16 8 30 7 MIN. QFF PRESSURE IN HPA 1011.1 1010.1 1006.8 1003.8 1004.7 1000.6 997.4 998.1 1002.2 1008.6 1005.9 1016.4 997.4 DAY 9 3 8 20 20 16 25 12 2 2 11 5 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.6 841.7 841.0 841.1 842.0 840.8 840.7 842.2 843.1 848.1 844.4 845.7 842.8 MAX. QFE PRESSURE IN HPA 850.5 848.1 848.6 846.9 847.1 848.2 845.2 845.0 847.7 853.1 851.3 850.7 853.1 DAY 6 9 31 1 9 22 27 31 16 20 21 26 MIN. QFE PRESSURE IN HPA 832.2 834.4 832.3 837.3 838.2 836.5 836.9 837.7 839.6 842.1 832.8 837.9 832.2 DAY 9 3 8 13 13 3 12 12 29 28 11 5 MEAN QNH PRESSURE IN HPA 1018.6 1017.5 1016.7 1016.8 1017.8 1016.4 1016.4 1018.1 1019.2 1025.0 1020.7 1022.2 1018.8 MAX. QNH PRESSURE IN HPA 1027.8 1025.0 1025.6 1023.6 1023.8 1025.1 1021.6 1021.4 1024.5 1030.8 1028.7 1028.0 1030.8 DAY 6 9 31 1 9 22 27 31 16 20 21 26 MIN. QNH PRESSURE IN HPA 1006.4 1009.0 1006.5 1012.4 1013.4 1011.4 1011.9 1012.9 1015.1 1018.0 1007.1 1013.1 1006.4 DAY 9 3 8 13 13 3 12 12 29 28 11 5 MEAN QFF PRESSURE IN HPA 1024.8 1021.9 1018.0 1012.8 1011.3 1006.4 1004.9 1007.3 1010.7 1022.0 1022.1 1025.2 1015.6 MAX. QFF PRESSURE IN HPA 1034.4 1031.8 1030.0 1019.9 1023.6 1019.8 1010.7 1013.3 1019.3 1028.2 1032.4 1030.9 1034.4 DAY 20 9 23 1 9 22 20 24 23 20 30 7 MIN. QFF PRESSURE IN HPA 1011.5 1010.5 1004.6 1004.5 1005.4 1001.4 998.9 999.9 1004.8 1011.1 1005.0 1015.5 998.9 DAY 9 3 8 20 20 3 3 12 3 2 11 5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.6 842.7 841.9 841.6 842.4 840.9 841.0 842.6 843.6 849.0 845.4 846.6 843.4 MAX. QFE PRESSURE IN HPA 851.9 849.4 848.9 847.4 846.9 848.5 845.6 845.6 848.4 853.5 851.8 852.1 853.5 DAY 6 9 31 1 9 22 27 31 22 17 21 26 MIN. QFE PRESSURE IN HPA 833.8 835.3 834.5 837.7 838.0 835.9 837.3 837.9 840.0 842.5 835.7 838.7 833.8 DAY 9 3 8 13 6 3 12 12 29 28 11 5 MEAN QNH PRESSURE IN HPA 1019.7 1018.7 1017.7 1017.4 1018.4 1016.6 1016.7 1018.6 1019.8 1026.1 1021.9 1023.2 1019.6 MAX. QNH PRESSURE IN HPA 1029.4 1026.5 1025.9 1024.2 1023.6 1025.4 1022.1 1022.1 1025.3 1031.3 1029.3 1029.6 1031.3 DAY 6 9 31 1 9 22 27 31 22 17 21 26 MIN. QNH PRESSURE IN HPA 1008.3 1010.1 1009.1 1012.9 1013.2 1010.8 1012.4 1013.1 1015.5 1018.5 1010.5 1014.0 1008.3 DAY 9 3 8 13 6 3 12 12 29 28 11 5 MEAN QFF PRESSURE IN HPA 1026.0 1023.0 1018.8 1012.9 1011.2 1005.9 1004.6 1006.9 1009.9 1021.7 1023.1 1026.0 1015.8 MAX. QFF PRESSURE IN HPA 1035.6 1032.0 1029.6 1018.9 1021.5 1019.6 1010.5 1011.3 1019.6 1027.0 1032.9 1032.7 1035.6 DAY 6 9 23 1 9 22 27 24 22 20 30 6 MIN. QFF PRESSURE IN HPA 1013.3 1011.9 1008.4 1004.4 1005.6 1000.1 998.6 999.7 1003.6 1010.9 1009.0 1015.9 998.6 DAY 9 3 8 20 20 3 3 12 3 2 11 5 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.7 842.0 841.1 840.6 842.0 840.0 840.1 841.5 842.4 847.8 844.6 845.6 842.5 MAX. QFE PRESSURE IN HPA 850.9 849.0 847.9 845.8 846.4 847.5 845.0 844.4 847.2 852.9 850.4 850.9 852.9 DAY 6 9 31 16 9 22 27 30 22 17 21 26 MIN. QFE PRESSURE IN HPA 833.1 834.6 835.0 835.6 837.4 834.9 836.4 837.1 838.3 840.2 835.9 838.3 833.1 DAY 8 3 21 20 6 3 12 13 3 28 11 5 MEAN QNH PRESSURE IN HPA 1018.6 1017.9 1016.9 1016.2 1017.8 1015.6 1015.6 1017.3 1018.4 1024.6 1020.9 1022.1 1018.5 MAX. QNH PRESSURE IN HPA 1028.2 1026.0 1024.7 1022.3 1023.0 1024.3 1021.4 1020.7 1023.9 1030.6 1027.7 1028.2 1030.6 DAY 6 9 31 16 9 22 27 30 22 17 21 26 MIN. QNH PRESSURE IN HPA 1007.5 1009.2 1009.7 1010.4 1012.5 1009.6 1011.3 1012.2 1013.6 1015.8 1010.8 1013.6 1007.5 DAY 8 3 21 20 6 3 12 13 3 28 11 5 MEAN QFF PRESSURE IN HPA 1024.0 1021.3 1017.2 1011.1 1010.5 1004.9 1003.0 1005.0 1007.8 1019.5 1021.4 1023.8 1014.1 MAX. QFF PRESSURE IN HPA 1034.0 1030.9 1027.1 1017.1 1020.5 1017.0 1008.9 1010.1 1016.6 1025.8 1031.6 1030.3 1034.0 DAY 6 9 23 1 9 22 27 24 22 17 30 6 MIN. QFF PRESSURE IN HPA 1012.9 1011.7 1008.6 999.7 1004.0 998.7 996.3 998.6 1000.6 1010.0 1009.5 1015.3 996.3 DAY 8 3 8 20 17 3 1 13 3 2 11 5 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 842.0 841.0 839.8 839.4 841.0 838.8 838.6 840.0 840.8 846.7 843.9 844.9 841.4 MAX. QFE PRESSURE IN HPA 849.9 848.3 846.5 844.7 845.5 846.5 843.2 842.9 845.6 851.6 849.3 850.6 851.6 DAY 6 9 30 16 8 22 27 28 22 17 21 26 MIN. QFE PRESSURE IN HPA 832.8 834.1 833.3 833.8 835.8 832.7 833.8 835.6 836.8 840.0 836.2 838.3 832.7 DAY 8 3 21 20 6 3 11 11 3 28 10 5 MEAN QNH PRESSURE IN HPA 1017.9 1016.7 1015.3 1014.9 1016.7 1014.1 1013.9 1015.6 1016.5 1023.4 1020.1 1021.3 1017.2 MAX. QNH PRESSURE IN HPA 1027.1 1025.2 1023.1 1021.0 1021.9 1023.1 1019.3 1018.9 1022.1 1029.1 1026.4 1027.9 1029.1 DAY 6 9 30 16 8 22 27 28 22 17 21 26 MIN. QNH PRESSURE IN HPA 1007.1 1008.7 1007.7 1008.3 1010.6 1007.0 1008.3 1010.4 1011.8 1015.5 1011.1 1013.6 1007.0 DAY 8 3 21 20 6 3 11 11 3 28 10 5 MEAN QFF PRESSURE IN HPA 1023.0 1020.0 1015.5 1010.1 1009.7 1003.5 1001.3 1003.4 1006.1 1018.5 1020.7 1022.9 1012.9 MAX. QFF PRESSURE IN HPA 1032.7 1031.1 1024.5 1014.6 1019.6 1015.3 1006.8 1009.8 1015.0 1023.4 1030.7 1028.5 1032.7 DAY 6 9 16 16 8 22 27 24 22 17 30 6 MIN. QFF PRESSURE IN HPA 1012.6 1012.6 1005.8 997.7 1003.3 997.4 995.2 997.0 999.7 1007.0 1009.1 1015.4 995.2 DAY 8 3 8 20 17 3 2 11 3 1 10 5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 842.5 841.4 840.0 839.7 841.0 838.6 838.5 839.8 840.9 847.1 844.3 845.5 841.6 MAX. QFE PRESSURE IN HPA 850.0 848.8 846.8 844.4 845.8 846.2 842.5 843.4 845.8 851.9 849.7 851.2 851.9 DAY 6 9 30 17 8 22 27 28 15 17 21 26 MIN. QFE PRESSURE IN HPA 833.0 835.0 832.5 835.2 836.0 832.7 833.1 835.3 837.0 840.6 835.9 839.4 832.5 DAY 8 3 5 20 6 3 11 11 3 28 13 4 MEAN QNH PRESSURE IN HPA 1018.4 1017.1 1015.6 1015.2 1016.7 1013.9 1013.8 1015.3 1016.6 1023.8 1020.5 1022.0 1017.4 MAX. QNH PRESSURE IN HPA 1027.2 1025.8 1023.5 1020.7 1022.3 1022.8 1018.5 1019.5 1022.3 1029.4 1026.8 1028.6 1029.4 DAY 6 9 30 17 8 22 27 28 15 17 21 26 MIN. QNH PRESSURE IN HPA 1007.4 1009.7 1006.8 1009.9 1010.9 1007.0 1007.5 1010.1 1012.0 1016.2 1010.8 1014.8 1006.8 DAY 8 3 5 20 6 3 11 11 3 28 13 4 MEAN QFF PRESSURE IN HPA 1024.5 1021.3 1016.7 1011.1 1010.0 1003.7 1002.3 1004.4 1008.1 1020.8 1022.0 1024.8 1014.2 MAX. QFF PRESSURE IN HPA 1034.6 1032.7 1025.3 1016.1 1020.6 1016.0 1007.5 1010.5 1016.9 1026.4 1031.3 1031.6 1034.6 DAY 19 9 16 4 8 22 20 24 22 8 30 20 MIN. QFF PRESSURE IN HPA 1013.2 1014.2 1006.8 1001.0 1005.0 997.2 995.3 997.6 1001.3 1010.0 1008.0 1017.1 995.3 DAY 8 3 8 20 17 30 2 11 7 1 10 28 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 843.0 842.0 841.0 841.0 841.9 839.9 840.0 841.3 842.3 848.0 844.6 846.0 842.6 MAX. QFE PRESSURE IN HPA 849.8 848.8 848.0 846.1 847.3 847.6 844.1 846.4 847.2 852.4 850.9 852.2 852.4 DAY 6 9 30 17 8 22 26 28 15 17 20 26 MIN. QFE PRESSURE IN HPA 833.0 836.1 832.4 837.0 837.9 834.0 835.5 836.1 839.0 842.0 834.9 839.8 832.4 DAY 8 3 21 12 6 3 11 11 3 28 13 4 MEAN QNH PRESSURE IN HPA 1019.0 1017.8 1016.7 1016.8 1017.8 1015.4 1015.5 1017.0 1018.2 1024.9 1021.0 1022.5 1018.5 MAX. QNH PRESSURE IN HPA 1027.0 1025.8 1024.9 1022.6 1024.0 1024.4 1020.3 1023.0 1023.9 1030.0 1028.2 1029.8 1030.0 DAY 6 9 30 17 8 22 26 28 15 17 20 26 MIN. QNH PRESSURE IN HPA 1007.4 1011.0 1006.7 1012.0 1013.1 1008.5 1010.3 1011.0 1014.4 1017.9 1009.6 1015.3 1006.7 DAY 8 3 21 12 6 3 11 11 3 28 13 4 MEAN QFF PRESSURE IN HPA 1025.2 1022.0 1017.7 1012.2 1010.5 1004.6 1003.5 1005.3 1008.5 1020.5 1022.3 1025.2 1014.8 MAX. QFF PRESSURE IN HPA 1036.1 1032.4 1026.2 1017.0 1023.0 1017.4 1008.4 1012.5 1017.9 1025.6 1032.6 1032.3 1036.1 DAY 19 9 15 23 8 22 20 28 22 8 29 20 MIN. QFF PRESSURE IN HPA 1013.3 1013.4 1007.0 1005.6 1005.9 997.7 997.6 997.7 1001.7 1009.5 1008.8 1018.1 997.6 DAY 8 2 21 20 17 3 2 11 1 1 10 4 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 842.7 841.8 841.2 841.0 841.8 840.0 840.2 841.5 842.6 848.1 844.5 845.8 842.6 MAX. QFE PRESSURE IN HPA 849.5 848.5 848.1 846.1 846.9 847.2 844.5 845.5 847.4 852.4 851.3 851.3 852.4 DAY 5 9 30 17 8 22 27 28 15 16 20 26 MIN. QFE PRESSURE IN HPA 832.2 836.1 832.5 836.7 838.1 835.3 835.5 836.2 839.4 843.1 835.8 838.9 832.2 DAY 8 2 21 26 5 3 11 11 2 1 10 4 MEAN QNH PRESSURE IN HPA 1018.7 1017.7 1016.9 1016.7 1017.7 1015.6 1015.7 1017.3 1018.5 1025.0 1020.8 1022.3 1018.6 MAX. QNH PRESSURE IN HPA 1026.6 1025.4 1025.0 1022.6 1023.6 1023.9 1020.8 1021.9 1024.2 1030.0 1028.7 1028.7 1030.0 DAY 5 9 30 17 8 22 27 28 15 16 20 26 MIN. QNH PRESSURE IN HPA 1006.4 1011.0 1006.8 1011.7 1013.3 1010.1 1010.3 1011.1 1014.8 1019.2 1010.6 1014.2 1006.4 DAY 8 2 21 26 5 3 11 11 2 1 10 4 MEAN QFF PRESSURE IN HPA 1024.0 1020.9 1017.2 1011.6 1010.3 1004.8 1003.1 1004.9 1008.1 1019.9 1021.5 1023.9 1014.2 MAX. QFF PRESSURE IN HPA 1034.7 1030.3 1026.7 1016.8 1022.6 1017.2 1008.0 1011.0 1016.4 1025.6 1031.5 1031.3 1034.7 DAY 19 9 22 4 8 21 27 23 15 7 29 20 MIN. QFF PRESSURE IN HPA 1012.7 1012.5 1007.3 1005.4 1005.0 998.2 997.6 997.8 1002.1 1010.6 1007.7 1017.6 997.6 DAY 28 2 21 20 19 30 2 11 1 1 10 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.8 0.9 6.2 12.0 15.3 19.0 22.9 25.1 18.6 13.8 8.1 0.1 11.9 MINIMUN AIR TEMPERATURE (C) -3.4 -3.1 0.7 5.8 8.7 11.6 14.7 14.4 9.5 6.6 2.3 -4.4 5.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 16 13 0 0 0 0 0 0 0 0 0 16 45 DAYS WITH FREEZING MIN.<= 0 24 23 11 2 0 0 0 0 0 0 7 24 91 TEMPERATURE RECORDS LOWEST(C) -10.8 -7.6 -3.8 -2.6 1.8 6.4 8.2 10.8 5.2 1.0 -2.6 -12.2 -12.2 DAY 24 4 9 5 7 29 2 25 22 12 10 7 MAXIMUM AIR TEMPERATURE (C) 5.7 6.0 12.3 19.1 22.4 27.0 31.3 31.4 24.6 19.1 12.1 4.0 17.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 9 18 22 1 0 0 0 50 DAYS WITH MAXIMUM TEMP. <= 0 3 2 0 0 0 0 0 0 0 0 0 5 10 TEMPERATURE RECORDS HIGHEST(C) 14.0 12.2 21.0 26.8 28.8 33.0 38.0 37.6 30.6 23.5 18.4 11.2 38.0 DAY 4 27 31 21 31 10 30 1 12 14 3 2 DIF. BETWEEN (MAX.-MIN.) (C) 9.1 9.1 11.6 13.3 13.7 15.4 16.6 17.0 15.1 12.5 9.8 8.4 12.6 MEAN DAILY TEMP. (MDT) (C) 1.1 1.4 6.5 12.5 15.5 19.3 23.0 22.9 17.1 12.8 7.2 -0.2 11.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 16.1 75.6 65.5 0.2 0.0 0.0 0.0 157.4 HEATING DEG. DAYS(BASE 18 0C) 523.3 464.1 356.2 167.2 87.1 25.3 0.8 0.0 42.1 160.2 323.1 563.7 2713.0 DEWPOINT (MEAN C) -4.3 -5.9 -2.0 1.9 4.3 5.3 8.4 8.1 2.1 3.6 0.4 -5.7 1.3 MIXING RATIO (G/KG) 3.43 3.07 4.04 5.43 6.36 6.86 8.41 8.28 5.63 6.12 4.89 3.15 5.47 VAPOUR PRESSURE (HPA) 4.61 4.12 5.42 7.28 8.52 9.13 11.16 11.00 7.57 8.24 6.57 4.25 7.32 SATURATION DEF. (HPA) 2.19 2.64 4.53 7.62 9.82 14.39 18.61 22.47 14.97 8.10 4.58 2.18 9.34 RELATIVE HUMIDITY (MEAN %) 71 64 60 54 52 46 43 38 38 55 63 68 54 RELATIVE HUMIDITY (MAX. %) 86 83 83 76 76 68 66 64 59 78 83 84 76 RELATIVE HUMIDITY (MIN. %) 53 45 38 32 29 26 25 23 24 39 47 52 36 RELATIVE HUMIDITY (MEAN% 03UTC) 82 74 76 70 69 61 62 63 58 77 81 82 71 RELATIVE HUMIDITY (MEAN% 09UTC) 60 54 44 37 34 31 28 26 27 44 54 57 41 RELATIVE HUMIDITY (MEAN% 15UTC) 69 52 51 49 41 36 35 35 38 55 66 68 50 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 55.3 52.1 40.5 50.3 44.9 5.3 0.0 0.0 1.0 37.2 160.3 37.5 484.4 DAYS WITH PRECIPITATION >=10 2 2 1 2 3 0 0 0 0 1 7 2 20 DAYS WITH PRECIPITATION >= 5 2 3 4 3 3 0 0 0 0 3 8 2 28 DAYS WITH PRECIPITATION >= 1 8 7 6 7 6 2 0 0 1 7 12 5 61 DAYS WITH PRECIPITATION 13 11 13 13 13 4 1 0 2 9 14 10 103 GREATEST DAILY PRECIPITATION 16.0 23.0 15.0 22.0 13.4 3.0 0.0 0.0 1.0 13.0 49.0 16.0 49.0 DAY 16 1 26 30 6 23 ** ** 28 20 7 29 DAY WITH THUNDER STORM 1 0 1 11 12 3 0 0 1 2 4 0 35 DAYS WITH SNOW OR SLEET 6 11 4 0 0 0 0 0 0 0 2 8 31 DAYS WITH DUST 0 0 0 3 1 2 0 0 0 0 0 0 6 WIND DIRECTION (PREVAILING) 315 315 315 315 315 45 45 45 45 45 270 270 315 PREVAILING WIND SPEED(KNOTS) 5.9 6.3 6.2 6.7 3.6 16.5 13.5 15.1 14.8 10.9 5.7 6.7 5.2 PREVAILING WIND PERCENT 32.8 24.1 20.2 15.4 17.3 25.4 26.2 24.5 30.0 20.0 19.3 18.7 15.2 CALMS PERCENT OF WIND 30.1 33.0 39.5 40.8 37.9 21.3 28.1 13.5 18.0 31.6 36.7 41.9 31.6 NO. OF WIND OBSERVATION 186 224 248 240 248 240 221 155 150 155 150 155 2372 VECTOR WIND DIRECTION (MEAN) 305 307 299 338 326 24 44 59 36 19 282 285 14 VECTOR WIND MAGNITUDE(KNOTS) 2.2 2.6 1.7 1.4 1.2 5.5 5.0 5.8 5.9 2.7 0.8 1.6 2.2 WIND STEADINESES (MEAN %) 53.7 59.1 42.5 35.0 33.3 67.1 71.4 65.9 77.6 57.4 21.6 43.2 41.5 WIND SPEED (MEAN KNOTS) 4.1 4.4 4.0 4.0 3.6 8.2 7.0 8.8 7.6 4.7 3.7 3.7 5.3 FASTEST WIND DIRECTION 250 360 20 20 120 30 20 10 10 10 10 250 30 FASTEST WIND SPEED (KNOTS) 19 25 23 19 19 35 31 29 33 29 21 23 35 DAY 30 18 22 4 4 27 9 6 3 22 6 14 DAYS WITH SKY CLEAR (0-2)/8 12 7 6 10 13 27 31 31 20 13 12 8 190 DAYS WITH P.CLOUDY (3-6)/8 13 13 16 12 12 3 0 0 9 15 11 16 120 DAYS WITH CLOUDY (7-8)/8 6 8 9 8 6 0 0 0 1 3 7 7 55 DAYS WITH VISIBILITY =< 2 KM 5 2 2 1 1 0 0 0 0 0 2 3 16 DURATION OF SUNSHINE HOURS ****** 164.6 186.3 209.9 270.0 357.1 365.7 337.2 269.6 162.7 163.8 162.3 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.5 840.2 840.8 842.6 841.8 838.2 836.9 838.2 845.7 846.9 842.8 843.7 841.7 MAX. QFE PRESSURE IN HPA 851.5 849.5 847.5 851.4 847.8 843.3 841.3 844.0 852.9 852.8 851.2 850.0 852.9 DAY-HOUR 10- 6 19- 6 18- 6 5- 6 18- 6 9- 6 13- 6 15- 6 23- 6 11- 6 2- 6 22- 6 MIN. QFE PRESSURE IN HPA 832.4 831.3 830.5 834.8 835.0 833.1 830.6 830.8 839.1 840.5 833.5 829.7 829.7 DAY-HOUR 16-12 1- 3 7- 9 2-12 1-12 25-15 30-15 2-15 2-12 14-12 25-15 3-15 MEAN QNH PRESSURE IN HPA 1018.5 1015.8 1016.5 1018.6 1017.6 1013.4 1011.9 1013.4 1022.1 1023.6 1018.8 1019.8 1017.5 MAX. QNH PRESSURE IN HPA 1028.9 1026.6 1024.3 1028.8 1024.6 1019.4 1017.0 1020.2 1030.6 1030.5 1028.6 1027.2 1030.6 DAY-HOUR 10- 6 19- 6 18- 6 5- 6 18- 6 9- 6 13- 6 15- 6 23- 6 11- 6 2- 6 22- 6 MIN. QNH PRESSURE IN HPA 1006.7 1005.4 1004.4 1009.5 1009.7 1007.5 1004.6 1004.8 1014.5 1016.1 1008.0 1003.5 1003.5 DAY-HOUR 16-12 1- 3 7- 9 2-12 1-12 25-15 30-15 2-15 2-12 14-12 25-15 3-15 MEAN QFF PRESSURE IN HPA 1021.2 1018.2 1015.3 1013.4 1010.3 1003.6 1000.1 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1033.1 1033.8 1025.4 1029.7 1019.2 1009.7 1010.3 ****** ****** ****** ****** ****** ****** DAY-HOUR 19- 3 19- 6 1- 6 5- 6 18- 6 5- 3 2- 3 **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA 1007.4 1003.7 1000.4 1005.5 1000.8 995.0 990.2 ****** ****** ****** ****** ****** ****** DAY-HOUR 31-21 1- 0 7- 9 22-12 13-12 25-12 30-15 **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** 839.9 840.5 842.6 841.6 838.4 837.3 ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** 848.4 845.0 848.8 846.5 841.6 840.5 ****** ****** ****** ****** ****** ****** DAY ** 19 19 5 18 9 2 ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** 831.5 830.7 835.4 835.9 835.3 834.1 ****** ****** ****** ****** ****** ****** DAY ** 1 12 2 1 22 20 ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** 1015.4 1016.2 1018.6 1017.4 1013.7 1012.3 ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** 1025.3 1021.4 1025.8 1023.1 1017.4 1016.1 ****** ****** ****** ****** ****** ****** DAY ** 19 19 5 18 9 2 ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** 1005.6 1004.7 1010.2 1010.8 1010.1 1008.7 ****** ****** ****** ****** ****** ****** DAY ** 1 12 2 1 22 20 ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** 1017.3 1014.8 1013.0 1010.1 1003.6 1000.1 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** 1032.0 1022.4 1027.1 1017.8 1008.8 1008.6 ****** ****** ****** ****** ****** ****** DAY ** 19 1 5 18 24 2 ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** 1003.7 1002.9 1006.4 1003.6 998.6 993.0 ****** ****** ****** ****** ****** ****** DAY ** 1 12 2 13 16 20 ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.7 839.9 841.1 843.0 842.2 839.0 837.9 839.3 846.3 847.2 843.0 843.6 842.1 MAX. QFE PRESSURE IN HPA 850.5 848.8 846.4 849.7 847.4 842.6 841.1 843.4 852.0 851.8 849.8 849.1 852.0 DAY 10 19 18 5 18 8 2 15 23 11 2 22 MIN. QFE PRESSURE IN HPA 834.5 831.3 830.7 835.9 836.2 835.6 834.2 834.4 841.3 843.3 833.8 830.2 830.2 DAY 16 1 12 2 6 3 30 2 1 14 26 4 MEAN QNH PRESSURE IN HPA 1018.7 1015.4 1016.8 1019.0 1018.1 1014.4 1013.1 1014.8 1022.9 1024.0 1019.0 1019.7 1018.0 MAX. QNH PRESSURE IN HPA 1027.8 1025.8 1023.0 1026.8 1024.2 1018.6 1016.8 1019.5 1029.5 1029.3 1027.0 1026.1 1029.5 DAY 10 19 18 5 18 8 2 15 23 11 2 22 MIN. QNH PRESSURE IN HPA 1009.1 1005.4 1004.7 1010.8 1011.1 1010.4 1008.8 1009.0 1017.0 1019.4 1008.3 1004.1 1004.1 DAY 16 1 12 2 6 3 30 2 1 14 26 4 MEAN QFF PRESSURE IN HPA 1022.0 1018.0 1016.4 1014.7 1011.5 1005.1 1001.8 1003.4 1016.2 1019.8 1018.0 1024.2 1014.2 MAX. QFF PRESSURE IN HPA 1033.1 1033.0 1023.7 1029.2 1018.7 1009.7 1010.3 1008.4 1025.0 1027.6 1026.0 1037.3 1037.3 DAY 19 19 17 5 18 5 2 7 23 24 10 7 MIN. QFF PRESSURE IN HPA 1011.2 1004.1 1003.6 1007.4 1005.8 998.5 994.4 994.4 1008.7 1011.8 1006.8 1005.9 994.4 DAY 5 1 12 23 13 3 20 2 1 15 26 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.9 840.8 842.0 843.6 842.6 839.2 838.0 839.7 846.8 848.0 844.0 844.5 842.7 MAX. QFE PRESSURE IN HPA 851.5 849.5 847.5 851.4 847.8 843.3 841.3 844.0 852.9 852.8 851.2 850.0 852.9 DAY 10 19 18 5 18 9 13 15 23 11 2 22 MIN. QFE PRESSURE IN HPA 834.2 832.7 831.9 835.4 836.2 835.9 834.4 834.9 841.7 843.8 835.4 831.2 831.2 DAY 16 1 12 2 6 3 30 2 2 14 26 4 MEAN QNH PRESSURE IN HPA 1020.0 1016.5 1017.8 1019.7 1018.5 1014.6 1013.2 1015.1 1023.5 1024.9 1020.1 1020.8 1018.7 MAX. QNH PRESSURE IN HPA 1028.9 1026.6 1024.3 1028.8 1024.6 1019.4 1017.0 1020.2 1030.6 1030.5 1028.6 1027.2 1030.6 DAY 10 19 18 5 18 9 13 15 23 11 2 22 MIN. QNH PRESSURE IN HPA 1008.8 1007.0 1006.1 1010.2 1011.1 1010.8 1009.0 1009.6 1017.5 1020.0 1010.2 1005.3 1005.3 DAY 16 1 12 2 6 3 30 2 2 14 26 4 MEAN QFF PRESSURE IN HPA ****** 1019.4 1017.0 1014.5 1011.1 1004.8 1001.6 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** 1033.8 1025.4 1029.7 1019.2 1008.8 1008.5 ****** ****** ****** ****** ****** ****** DAY ** 19 1 5 18 5 10 ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** 1007.4 1003.9 1007.3 1005.0 998.4 994.1 ****** ****** ****** ****** ****** ****** DAY ** 1 7 30 13 3 20 ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 843.1 840.3 841.1 842.9 841.9 838.3 837.1 838.5 845.9 847.0 843.0 843.8 841.9 MAX. QFE PRESSURE IN HPA 850.6 849.1 846.4 851.1 847.1 842.9 840.7 842.6 852.0 851.5 850.1 849.4 852.0 DAY 9 18 18 5 18 8 13 15 23 10 2 7 MIN. QFE PRESSURE IN HPA 833.0 832.8 830.5 835.6 836.2 835.2 833.3 833.5 840.8 842.3 835.1 830.6 830.5 DAY 16 1 7 2 1 22 30 2 2 14 26 4 MEAN QNH PRESSURE IN HPA 1019.1 1015.9 1016.8 1018.9 1017.7 1013.5 1012.2 1013.8 1022.4 1023.7 1019.0 1020.0 1017.8 MAX. QNH PRESSURE IN HPA 1027.9 1026.1 1023.0 1028.5 1023.8 1018.9 1016.4 1018.6 1029.5 1028.9 1027.3 1026.5 1029.5 DAY 9 18 18 5 18 8 13 15 23 10 2 7 MIN. QNH PRESSURE IN HPA 1007.4 1007.1 1004.4 1010.4 1011.1 1009.9 1007.7 1008.0 1016.5 1018.2 1009.8 1004.6 1004.4 DAY 16 1 7 2 1 22 30 2 2 14 26 4 MEAN QFF PRESSURE IN HPA ****** 1018.1 1015.2 1013.3 1010.1 1003.3 1000.0 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** 1032.9 1025.1 1029.5 1018.5 1007.5 1006.4 ****** ****** ****** ****** ****** ****** DAY ** 18 1 5 18 7 2 ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** 1006.6 1000.4 1006.4 1002.6 997.2 992.6 ****** ****** ****** ****** ****** ****** DAY ** 1 7 2 13 25 20 ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 842.2 839.5 840.0 841.6 840.8 837.1 835.6 836.9 844.6 845.9 841.8 843.0 840.7 MAX. QFE PRESSURE IN HPA 850.1 848.7 845.0 849.5 846.2 841.5 839.6 841.6 850.5 850.6 848.3 848.7 850.6 DAY 9 18 18 5 18 8 13 15 23 11 2 21 MIN. QFE PRESSURE IN HPA 832.4 832.7 830.7 834.8 835.0 833.3 831.2 831.1 839.1 840.5 835.2 830.2 830.2 DAY 16 12 12 2 1 25 30 2 2 14 26 3 MEAN QNH PRESSURE IN HPA 1018.1 1014.9 1015.5 1017.4 1016.5 1012.1 1010.4 1011.9 1021.0 1022.5 1017.7 1019.0 1016.4 MAX. QNH PRESSURE IN HPA 1027.3 1025.7 1021.4 1026.6 1022.8 1017.3 1015.1 1017.4 1027.8 1027.9 1025.2 1025.7 1027.9 DAY 9 18 18 5 18 8 13 15 23 11 2 21 MIN. QNH PRESSURE IN HPA 1006.7 1007.0 1004.7 1009.5 1009.7 1007.7 1005.3 1005.2 1014.5 1016.1 1009.9 1004.1 1004.1 DAY 16 12 12 2 1 25 30 2 2 14 26 3 MEAN QFF PRESSURE IN HPA ****** 1016.8 1014.0 1012.0 1009.0 1002.1 998.4 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** 1032.3 1023.4 1027.0 1017.8 1007.3 1005.3 ****** ****** ****** ****** ****** ****** DAY ** 18 1 5 18 7 1 ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** 1007.9 1003.3 1005.5 1000.8 995.0 990.3 ****** ****** ****** ****** ****** ****** DAY ** 1 12 22 13 25 20 ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 842.6 839.9 840.2 841.9 841.0 837.0 835.2 836.6 844.7 846.3 842.2 843.6 840.9 MAX. QFE PRESSURE IN HPA 850.5 849.1 845.1 849.5 846.1 841.1 839.0 841.1 850.3 850.5 848.5 849.3 850.5 DAY 9 18 18 5 18 7 13 15 23 10 2 21 MIN. QFE PRESSURE IN HPA 833.7 834.0 831.8 835.3 835.1 833.1 830.6 830.8 839.3 841.2 833.5 829.7 829.7 DAY 16 12 12 2 1 25 30 2 2 14 25 3 MEAN QNH PRESSURE IN HPA 1018.5 1015.4 1015.8 1017.8 1016.7 1012.0 1009.9 1011.6 1021.0 1022.9 1018.1 1019.7 1016.6 MAX. QNH PRESSURE IN HPA 1027.8 1026.1 1021.5 1026.6 1022.6 1016.8 1014.4 1016.8 1027.5 1027.8 1025.4 1026.4 1027.8 DAY 9 18 18 5 18 7 13 15 23 10 2 21 MIN. QNH PRESSURE IN HPA 1008.2 1008.5 1006.0 1010.1 1009.8 1007.5 1004.6 1004.8 1014.7 1016.9 1008.0 1003.5 1003.5 DAY 16 12 12 2 1 25 30 2 2 14 25 3 MEAN QFF PRESSURE IN HPA 1021.7 1018.1 1015.1 1013.4 1010.0 1002.7 998.5 1000.2 1014.3 1018.7 1017.1 1024.2 1012.8 MAX. QFF PRESSURE IN HPA 1032.7 1032.8 1023.6 1027.0 1018.4 1007.4 1006.1 1006.8 1022.2 1026.4 1024.9 1036.3 1036.3 DAY 18 18 1 5 18 7 1 6 23 23 9 7 MIN. QFF PRESSURE IN HPA 1010.6 1010.1 1005.6 1005.8 1004.0 996.3 990.2 990.6 1006.4 1010.5 1005.9 1004.1 990.2 DAY 16 13 7 22 12 15 30 2 2 14 25 3 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** 840.7 841.1 842.9 842.1 838.3 836.9 ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** 849.0 845.5 849.8 846.3 842.3 840.3 ****** ****** ****** ****** ****** ****** DAY ** 18 18 5 17 7 9 ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** 834.1 832.5 835.7 836.0 835.3 833.2 ****** ****** ****** ****** ****** ****** DAY ** 11 11 1 1 25 20 ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** 1016.4 1016.8 1018.9 1018.0 1013.6 1011.9 ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** 1026.0 1021.9 1027.0 1022.9 1018.2 1015.9 ****** ****** ****** ****** ****** ****** DAY ** 18 18 5 17 7 9 ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** 1008.7 1006.8 1010.5 1010.9 1010.1 1007.6 ****** ****** ****** ****** ****** ****** DAY ** 11 11 1 1 25 20 ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** 1019.3 1015.8 1013.6 1010.5 1003.8 1000.1 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** 1032.9 1024.3 1027.5 1017.8 1009.2 1007.7 ****** ****** ****** ****** ****** ****** DAY ** 18 1 4 18 23 9 ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** 1010.5 1005.1 1005.9 1004.6 998.9 992.4 ****** ****** ****** ****** ****** ****** DAY ** 8 11 30 12 25 19 ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** 840.7 841.0 842.8 842.2 838.6 837.4 ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** 849.2 845.5 849.8 846.7 841.8 840.8 ****** ****** ****** ****** ****** ****** DAY ** 18 18 5 17 8 9 ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** 833.6 831.5 835.7 836.4 836.2 834.1 ****** ****** ****** ****** ****** ****** DAY ** 11 11 1 5 15 19 ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** 1016.4 1016.6 1018.8 1018.1 1013.9 1012.5 ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** 1026.3 1021.9 1027.0 1023.3 1017.6 1016.5 ****** ****** ****** ****** ****** ****** DAY ** 18 18 5 17 8 9 ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** 1008.1 1005.6 1010.5 1011.3 1011.1 1008.7 ****** ****** ****** ****** ****** ****** DAY ** 11 11 1 5 15 19 ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** 1018.6 1014.8 1013.1 1010.2 1003.7 1000.0 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** 1032.9 1022.8 1028.0 1017.6 1008.9 1007.8 ****** ****** ****** ****** ****** ****** DAY ** 18 1 4 17 5 9 ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** 1009.4 1002.5 1005.7 1004.6 998.5 993.5 ****** ****** ****** ****** ****** ****** DAY ** 11 11 1 12 15 19 ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.2 3.6 8.6 12.9 16.7 20.8 26.0 27.4 21.5 13.6 8.9 1.2 13.7 MINIMUN AIR TEMPERATURE (C) -2.8 -1.8 0.2 5.1 9.0 11.5 16.5 16.4 10.9 4.8 0.4 -5.0 5.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 8 4 3 0 0 0 0 0 0 0 7 20 42 DAYS WITH FREEZING MIN.<= 0 27 22 18 0 0 0 0 0 0 1 12 31 111 TEMPERATURE RECORDS LOWEST(C) -8.6 -5.6 -4.8 1.0 2.4 7.8 13.2 11.2 3.0 -1.6 -7.4 -10.6 -10.6 DAY 21 25 6 7 9 24 6 24 22 18 29 21 MAXIMUM AIR TEMPERATURE (C) 7.8 8.4 14.1 18.1 21.7 25.9 32.4 34.2 28.0 19.7 14.9 6.0 19.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 4 21 29 13 0 0 0 67 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 1 1 TEMPERATURE RECORDS HIGHEST(C) 12.2 13.6 21.0 22.8 26.8 33.4 37.6 38.0 32.6 29.6 20.4 11.6 38.0 DAY 30 21 24 3 21 21 29 5 12 3 1 28 DIF. BETWEEN (MAX.-MIN.) (C) 10.6 10.2 13.9 13.0 12.7 14.4 15.9 17.8 17.1 14.9 14.5 11.0 13.9 MEAN DAILY TEMP. (MDT) (C) 2.5 3.3 7.2 11.6 15.4 18.7 24.4 25.3 19.5 12.2 7.6 0.5 12.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 8.7 107.0 133.9 17.4 0.0 0.0 0.0 267.0 HEATING DEG. DAYS(BASE 18 0C) 480.1 412.1 335.7 192.5 87.8 18.6 0.0 0.0 28.6 180.8 311.6 541.3 2589.1 DEWPOINT (MEAN C) -4.9 -4.4 -3.8 1.4 5.3 7.5 8.9 6.4 1.7 -0.6 -6.5 -7.2 0.3 MIXING RATIO (G/KG) 3.26 3.41 3.67 5.26 6.82 7.93 8.73 7.46 5.30 4.54 3.13 2.73 5.19 VAPOUR PRESSURE (HPA) 4.39 4.58 4.92 7.04 9.15 10.57 11.57 9.94 7.10 6.13 4.22 3.68 6.94 SATURATION DEF. (HPA) 3.54 3.60 6.84 8.43 10.69 15.08 23.67 28.65 20.51 10.64 8.14 3.29 11.92 RELATIVE HUMIDITY (MEAN %) 59 60 48 50 51 47 38 31 32 44 37 58 46 RELATIVE HUMIDITY (MAX. %) 76 81 75 73 74 71 64 55 56 68 58 76 69 RELATIVE HUMIDITY (MIN. %) 43 43 29 36 36 34 24 17 19 29 22 41 31 RELATIVE HUMIDITY (MEAN% 03UTC) 76 80 73 72 71 71 63 53 56 67 58 75 68 RELATIVE HUMIDITY (MEAN% 09UTC) 48 51 36 40 42 37 28 21 22 32 28 46 36 RELATIVE HUMIDITY (MEAN% 15UTC) 58 55 39 46 50 43 32 25 28 43 34 58 43 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 13.2 48.1 21.6 30.3 67.6 34.7 0.3 0.0 0.1 30.2 8.4 2.0 256.5 DAYS WITH PRECIPITATION >=10 0 1 0 1 3 1 0 0 0 1 0 0 7 DAYS WITH PRECIPITATION >= 5 1 4 2 2 5 2 0 0 0 2 0 0 18 DAYS WITH PRECIPITATION >= 1 4 5 6 8 9 5 0 0 0 3 3 1 44 DAYS WITH PRECIPITATION 6 10 9 16 15 9 1 0 1 3 6 4 80 GREATEST DAILY PRECIPITATION 6.0 26.0 8.0 12.0 17.0 23.0 0.3 0.0 0.1 23.0 4.0 1.0 26.0 DAY 12 5 17 24 29 3 6 ** 30 25 11 13 DAY WITH THUNDER STORM 0 1 1 5 7 5 0 1 1 1 0 0 22 DAYS WITH SNOW OR SLEET 2 8 0 0 0 0 0 0 0 0 0 4 14 DAYS WITH DUST 0 0 0 1 2 1 0 0 0 0 0 0 4 WIND DIRECTION (PREVAILING) 315 315 315 315 45 45 45 135 135 45 315 315 315 PREVAILING WIND SPEED(KNOTS) 5.8 4.3 4.5 6.7 11.8 15.5 12.4 7.6 5.6 14.7 6.1 3.8 4.9 PREVAILING WIND PERCENT 29.7 14.3 19.4 17.3 23.9 32.0 31.0 25.2 23.3 18.1 18.0 18.1 14.5 CALMS PERCENT OF WIND 28.4 35.7 32.9 22.7 22.6 23.3 14.8 15.5 17.3 20.0 20.7 26.5 23.3 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 283 327 269 287 24 25 54 86 50 35 251 319 18 VECTOR WIND MAGNITUDE(KNOTS) 3.0 0.9 1.8 1.1 3.1 5.0 5.0 3.8 1.9 2.4 2.5 0.6 1.3 WIND STEADINESES (MEAN %) 66.7 19.1 40.0 19.3 50.8 64.1 65.8 57.6 33.3 37.5 49.0 15.8 22.8 WIND SPEED (MEAN KNOTS) 4.5 4.7 4.5 5.7 6.1 7.8 7.6 6.6 5.7 6.4 5.1 3.8 5.7 FASTEST WIND DIRECTION 280 40 220 160 30 30 30 30 30 40 250 240 40 FASTEST WIND SPEED (KNOTS) 19 27 29 25 27 29 29 29 29 33 23 19 33 DAY 16 23 25 3 14 22 5 19 26 13 24 22 DAYS WITH SKY CLEAR (0-2)/8 22 11 16 6 14 21 26 28 25 23 23 14 229 DAYS WITH P.CLOUDY (3-6)/8 6 8 8 16 11 8 5 3 5 7 7 9 93 DAYS WITH CLOUDY (7-8)/8 3 9 7 8 6 1 0 0 0 1 0 8 43 DAYS WITH VISIBILITY =< 2 KM 0 1 1 0 1 0 0 0 0 0 0 1 4 DURATION OF SUNSHINE HOURS 230.0 177.9 245.7 153.4 ****** 268.4 332.7 355.3 296.0 277.7 240.6 177.3 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 844.0 841.8 841.1 840.4 843.3 839.7 836.4 839.1 841.6 845.3 843.8 844.7 841.8 MAX. QFE PRESSURE IN HPA 852.3 847.6 849.9 846.2 848.0 844.3 841.1 843.7 848.0 854.1 851.1 849.7 854.1 DAY-HOUR 7- 6 1- 6 3- 6 12- 6 26- 6 1- 6 4- 3 25- 6 13- 6 25- 6 16- 6 10- 6 MIN. QFE PRESSURE IN HPA 837.5 831.5 832.9 835.6 838.6 832.3 830.6 833.9 835.5 838.7 835.9 840.1 830.6 DAY-HOUR 11-15 5- 3 25-12 17-15 2-12 29-15 16-15 22-15 19-15 11-12 25-12 4-12 MEAN QNH PRESSURE IN HPA 1020.2 1017.6 1016.8 1016.0 1019.4 1015.2 1011.3 1014.4 1017.4 1021.7 1020.0 1021.1 1017.6 MAX. QNH PRESSURE IN HPA 1029.9 1024.4 1027.1 1022.8 1024.9 1020.5 1016.8 1019.8 1024.9 1032.0 1028.5 1026.8 1032.0 DAY-HOUR 7- 6 1- 6 3- 6 12- 6 26- 6 1- 6 4- 3 25- 6 13- 6 25- 6 16- 6 10- 6 MIN. QNH PRESSURE IN HPA 1012.6 1005.6 1007.3 1010.4 1013.9 1006.5 1004.6 1008.4 1010.3 1014.0 1010.8 1015.7 1004.6 DAY-HOUR 11-15 5- 3 25-12 17-15 2-12 29-15 16-15 22-15 19-15 11-12 25-12 4-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 844.1 841.9 841.5 840.9 843.6 840.5 837.3 840.0 842.4 845.7 844.3 844.9 842.3 MAX. QFE PRESSURE IN HPA 851.1 846.5 849.7 845.0 847.0 844.2 841.1 843.3 847.3 853.0 850.3 849.2 853.0 DAY 7 1 3 12 26 1 4 25 13 25 16 10 MIN. QFE PRESSURE IN HPA 838.2 831.5 834.7 836.5 840.1 836.1 833.1 837.0 836.8 840.7 838.2 841.1 831.5 DAY 17 5 17 19 2 29 16 22 20 11 24 4 MEAN QNH PRESSURE IN HPA 1020.3 1017.8 1017.3 1016.6 1019.8 1016.1 1012.4 1015.5 1018.4 1022.2 1020.5 1021.2 1018.2 MAX. QNH PRESSURE IN HPA 1028.5 1023.1 1026.8 1021.4 1023.7 1020.4 1016.8 1019.4 1024.0 1030.7 1027.5 1026.3 1030.7 DAY 7 1 3 12 26 1 4 25 13 25 16 10 MIN. QNH PRESSURE IN HPA 1013.4 1005.6 1009.4 1011.4 1015.7 1011.0 1007.5 1012.0 1011.8 1016.4 1013.4 1016.8 1005.6 DAY 17 5 17 19 2 29 16 22 20 11 24 4 MEAN QFF PRESSURE IN HPA 1022.9 1019.6 1016.4 1012.6 1013.4 1007.2 1000.2 1002.8 1009.7 1018.7 1020.0 1025.6 1014.1 MAX. QFF PRESSURE IN HPA 1033.6 1027.3 1028.4 1020.5 1017.9 1013.4 1006.7 1010.4 1021.8 1030.1 1029.8 1031.0 1033.6 DAY 7 25 3 7 26 1 4 24 22 18 28 10 MIN. QFF PRESSURE IN HPA 1013.9 1005.0 1006.3 1004.2 1008.8 998.8 992.1 998.0 1002.4 1007.5 1010.2 1020.0 992.1 DAY 17 5 25 19 2 22 16 8 20 4 11 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 845.1 842.8 842.3 841.4 844.1 840.6 837.6 840.5 843.0 846.5 845.0 845.8 842.9 MAX. QFE PRESSURE IN HPA 852.3 847.6 849.9 846.2 848.0 844.3 841.1 843.7 848.0 854.1 851.1 849.7 854.1 DAY 7 1 3 12 26 1 4 25 13 25 16 10 MIN. QFE PRESSURE IN HPA 839.0 833.0 835.3 837.7 840.6 835.7 833.4 837.3 837.3 841.4 838.2 841.8 833.0 DAY 11 5 17 19 2 29 16 22 20 11 11 4 MEAN QNH PRESSURE IN HPA 1021.5 1018.8 1018.2 1017.2 1020.3 1016.3 1012.8 1016.1 1019.0 1023.2 1021.4 1022.2 1018.9 MAX. QNH PRESSURE IN HPA 1029.9 1024.4 1027.1 1022.8 1024.9 1020.5 1016.8 1019.8 1024.9 1032.0 1028.5 1026.8 1032.0 DAY 7 1 3 12 26 1 4 25 13 25 16 10 MIN. QNH PRESSURE IN HPA 1014.4 1007.4 1010.1 1012.9 1016.2 1010.5 1007.8 1012.4 1012.4 1017.2 1013.4 1017.6 1007.4 DAY 11 5 17 19 2 29 16 22 20 11 11 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 844.2 842.1 841.4 840.6 843.6 839.9 836.8 839.5 841.8 845.5 843.8 844.9 842.0 MAX. QFE PRESSURE IN HPA 850.9 847.1 849.3 845.4 848.0 843.7 840.2 842.5 846.9 852.9 849.6 849.4 852.9 DAY 7 1 3 12 26 1 4 24 13 25 15 10 MIN. QFE PRESSURE IN HPA 838.6 831.9 834.0 837.2 839.9 834.5 832.6 836.0 836.5 840.3 837.7 840.8 831.9 DAY 11 5 25 17 6 29 16 22 20 4 11 4 MEAN QNH PRESSURE IN HPA 1020.4 1017.9 1017.2 1016.3 1019.7 1015.4 1011.8 1014.9 1017.7 1021.9 1020.0 1021.2 1017.9 MAX. QNH PRESSURE IN HPA 1028.2 1023.8 1026.4 1021.8 1024.9 1019.8 1015.8 1018.5 1023.6 1030.6 1026.7 1026.5 1030.6 DAY 7 1 3 12 26 1 4 24 13 25 15 10 MIN. QNH PRESSURE IN HPA 1013.9 1006.1 1008.5 1012.3 1015.4 1009.1 1006.9 1010.9 1011.4 1015.9 1012.9 1016.5 1006.1 DAY 11 5 25 17 6 29 16 22 20 4 11 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 843.2 841.0 840.2 839.6 842.7 838.9 835.4 837.9 840.5 844.2 842.8 843.8 840.8 MAX. QFE PRESSURE IN HPA 850.2 846.4 847.1 843.9 846.7 843.1 838.7 841.8 845.1 852.2 849.0 848.7 852.2 DAY 7 1 3 12 26 1 4 24 13 25 15 10 MIN. QFE PRESSURE IN HPA 837.6 831.9 832.9 835.9 838.6 832.7 830.8 834.1 835.6 838.7 835.9 840.1 830.8 DAY 11 5 25 17 2 29 16 22 19 11 25 4 MEAN QNH PRESSURE IN HPA 1019.3 1016.7 1015.7 1015.1 1018.6 1014.2 1010.2 1013.1 1016.1 1020.4 1018.8 1020.0 1016.5 MAX. QNH PRESSURE IN HPA 1027.4 1023.0 1023.8 1020.1 1023.3 1019.2 1014.0 1017.6 1021.5 1029.8 1026.0 1025.7 1029.8 DAY 7 1 3 12 26 1 4 24 13 25 15 10 MIN. QNH PRESSURE IN HPA 1012.7 1006.1 1007.3 1010.8 1013.9 1007.0 1004.8 1008.7 1010.4 1014.0 1010.8 1015.7 1004.8 DAY 11 5 25 17 2 29 16 22 19 11 25 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 843.7 841.3 840.2 839.6 842.7 838.7 835.0 837.4 840.5 844.5 843.4 844.4 841.0 MAX. QFE PRESSURE IN HPA 850.7 846.5 846.4 844.9 846.1 842.6 838.4 841.5 845.3 852.2 849.5 848.9 852.2 DAY 6 1 2 12 26 1 4 24 26 25 15 10 MIN. QFE PRESSURE IN HPA 837.5 833.8 833.2 835.6 838.8 832.3 830.6 833.9 835.5 839.5 836.6 840.9 830.6 DAY 11 5 25 17 2 29 16 22 19 15 25 25 MEAN QNH PRESSURE IN HPA 1019.8 1017.1 1015.8 1015.1 1018.7 1014.1 1009.7 1012.6 1016.1 1020.8 1019.4 1020.7 1016.7 MAX. QNH PRESSURE IN HPA 1028.0 1023.1 1023.0 1021.2 1022.6 1018.6 1013.7 1017.3 1021.7 1029.8 1026.6 1025.9 1029.8 DAY 6 1 2 12 26 1 4 24 26 25 15 10 MIN. QNH PRESSURE IN HPA 1012.6 1008.3 1007.6 1010.4 1014.1 1006.5 1004.6 1008.4 1010.3 1014.9 1011.6 1016.6 1004.6 DAY 11 5 25 17 2 29 16 22 19 15 25 25 MEAN QFF PRESSURE IN HPA 1022.4 1019.0 1014.8 1011.0 1012.3 1004.9 997.4 999.9 1007.4 1017.3 1019.1 1025.0 1012.5 MAX. QFF PRESSURE IN HPA 1033.0 1025.1 1023.7 1018.2 1017.7 1011.5 1003.0 1007.7 1017.7 1028.1 1027.5 1030.4 1033.0 DAY 6 13 2 12 29 1 4 24 21 17 28 19 MIN. QFF PRESSURE IN HPA 1013.2 1007.7 1002.4 1005.9 1006.3 994.5 991.1 993.9 1000.4 1008.3 1011.7 1018.9 991.1 DAY 11 5 25 17 2 29 16 7 19 3 7 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.8 1.8 3.1 10.4 18.5 22.0 25.4 25.9 23.0 13.9 7.1 5.5 12.9 MINIMUN AIR TEMPERATURE (C) -6.1 -2.6 -1.5 4.2 10.3 12.4 16.4 15.4 12.6 5.8 0.7 -0.6 5.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 0 0 0 0 0 2 DAYS WITH MINIMUM TEMP. <=-4 22 9 8 0 0 0 0 0 0 0 3 6 48 DAYS WITH FREEZING MIN.<= 0 28 23 21 3 0 0 0 0 0 0 11 18 104 TEMPERATURE RECORDS LOWEST(C) -14.6 -12.4 -9.6 -2.8 6.2 7.0 11.8 11.6 8.0 1.2 -5.6 -6.0 -14.6 DAY 22 4 1 4 1 12 16 30 21 28 13 3 MAXIMUM AIR TEMPERATURE (C) 1.7 5.9 6.9 15.2 23.6 27.5 31.0 32.4 29.5 19.6 12.4 10.2 18.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 8 23 27 18 0 0 0 76 DAYS WITH MAXIMUM TEMP. <= 0 13 4 0 1 0 0 0 0 0 0 0 0 18 TEMPERATURE RECORDS HIGHEST(C) 12.4 14.6 18.8 21.4 28.8 33.6 34.2 36.2 33.2 24.8 17.8 17.0 36.2 DAY 1 25 30 29 31 4 18 11 16 26 2 5 DIF. BETWEEN (MAX.-MIN.) (C) 7.8 8.5 8.4 11.0 13.3 15.1 14.6 17.0 16.9 13.8 11.7 10.8 12.4 MEAN DAILY TEMP. (MDT) (C) -2.2 1.7 2.7 9.7 16.9 19.9 23.7 23.9 21.0 12.7 6.5 4.8 11.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 16.1 87.6 94.7 28.8 0.0 0.0 0.0 227.2 HEATING DEG. DAYS(BASE 18 0C) 625.7 474.0 474.3 248.4 53.5 12.4 0.0 0.0 5.9 163.0 344.3 409.9 2811.5 DEWPOINT (MEAN C) -6.4 -3.7 -2.7 1.3 6.6 7.6 7.7 6.6 2.4 0.9 -3.1 -5.3 1.0 MIXING RATIO (G/KG) 2.94 3.57 3.86 5.18 7.45 7.97 8.16 7.53 5.69 5.00 3.74 3.18 5.36 VAPOUR PRESSURE (HPA) 3.97 4.80 5.17 6.94 9.96 10.62 10.89 10.05 7.62 6.73 5.06 4.29 7.18 SATURATION DEF. (HPA) 1.69 2.54 2.89 6.44 12.31 17.30 22.80 25.25 22.25 10.04 5.56 5.11 11.18 RELATIVE HUMIDITY (MEAN %) 74 70 69 59 50 43 36 34 31 46 52 49 51 RELATIVE HUMIDITY (MAX. %) 86 85 85 80 77 66 55 56 53 71 73 68 71 RELATIVE HUMIDITY (MIN. %) 61 57 55 44 35 30 23 21 18 30 35 33 37 RELATIVE HUMIDITY (MEAN% 03UTC) 83 82 81 78 73 64 55 56 50 70 72 66 69 RELATIVE HUMIDITY (MEAN% 09UTC) 66 65 63 49 39 35 27 24 21 36 40 40 42 RELATIVE HUMIDITY (MEAN% 15UTC) 75 69 70 58 49 36 31 30 27 43 49 49 49 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 46.8 63.2 103.9 111.5 45.1 1.0 5.0 0.0 0.4 10.2 8.2 4.3 399.6 DAYS WITH PRECIPITATION >=10 1 2 2 5 1 0 0 0 0 0 0 0 11 DAYS WITH PRECIPITATION >= 5 4 6 7 9 2 0 0 0 0 1 0 0 29 DAYS WITH PRECIPITATION >= 1 10 11 14 14 9 1 3 0 0 2 3 2 69 DAYS WITH PRECIPITATION 13 15 18 17 13 2 5 0 1 6 4 5 99 GREATEST DAILY PRECIPITATION 14.0 13.0 32.0 23.0 12.8 1.0 2.6 0.0 0.4 6.1 4.0 3.0 32.0 DAY 6 11 2 25 12 27 11 ** 22 13 8 11 DAY WITH THUNDER STORM 0 0 0 5 7 0 4 0 0 2 1 0 19 DAYS WITH SNOW OR SLEET 10 12 11 2 0 0 0 0 0 0 0 2 37 DAYS WITH DUST 0 0 1 0 0 0 0 0 2 0 0 0 3 WIND DIRECTION (PREVAILING) 135 315 315 45 270 45 45 135 225 45 315 270 45 PREVAILING WIND SPEED(KNOTS) 4.3 6.9 4.8 13.9 7.6 12.8 12.3 6.9 7.5 12.9 4.8 9.5 12.7 PREVAILING WIND PERCENT 15.5 19.3 11.6 12.0 12.3 24.0 23.2 14.2 10.0 9.7 12.7 12.9 11.5 CALMS PERCENT OF WIND 41.9 41.4 45.8 34.0 43.2 25.3 30.3 40.6 49.3 44.5 45.3 48.4 40.9 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 36 345 5 12 303 30 50 61 337 18 26 244 21 VECTOR WIND MAGNITUDE(KNOTS) 1.7 2.4 0.7 0.9 0.7 3.2 4.1 2.2 0.8 1.3 1.3 2.1 1.3 WIND STEADINESES (MEAN %) 39.5 50.0 17.9 16.1 17.9 42.1 61.2 44.0 21.1 30.2 35.1 56.8 27.1 WIND SPEED (MEAN KNOTS) 4.3 4.8 3.9 5.6 3.9 7.6 6.7 5.0 3.8 4.3 3.7 3.7 4.8 FASTEST WIND DIRECTION 30 30 210 30 30 30 30 10 30 30 30 250 30 FASTEST WIND SPEED (KNOTS) 27 25 29 31 21 27 25 21 23 19 29 23 31 DAY 12 22 25 3 1 25 29 14 22 1 11 24 DAYS WITH SKY CLEAR (0-2)/8 11 8 7 7 13 26 25 29 28 23 15 12 204 DAYS WITH P.CLOUDY (3-6)/8 8 12 6 13 13 4 6 2 2 7 11 15 99 DAYS WITH CLOUDY (7-8)/8 12 9 18 10 5 0 0 0 0 1 4 4 63 DAYS WITH VISIBILITY =< 2 KM 7 5 7 1 0 0 0 0 1 0 1 0 22 DURATION OF SUNSHINE HOURS 130.2 137.0 141.7 180.8 267.2 343.7 328.9 348.6 304.0 255.5 200.8 156.4 2794.8 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 843.8 840.9 839.2 841.6 842.3 839.9 841.1 840.7 840.8 844.7 847.5 845.2 842.3 MAX. QFE PRESSURE IN HPA 850.9 847.0 844.1 847.7 846.9 844.8 846.9 848.7 848.5 852.8 856.0 852.0 856.0 DAY-HOUR 26- 6 13- 6 29- 6 4-15 18- 6 12- 3 3- 9 29- 6 25- 6 2- 6 18- 6 8- 6 MIN. QFE PRESSURE IN HPA 834.9 832.2 834.2 833.8 837.0 834.7 833.8 833.9 833.4 837.1 841.4 838.1 832.2 DAY-HOUR 6-12 5-12 25-15 13- 3 29-12 18-15 6-12 8-15 21-15 27-12 28-12 29-12 MEAN QNH PRESSURE IN HPA 1020.0 1016.6 1014.6 1017.4 1018.2 1015.4 1016.8 1016.3 1016.4 1021.1 1024.3 1021.5 1018.2 MAX. QNH PRESSURE IN HPA 1028.2 1023.7 1020.3 1024.5 1023.6 1021.1 1023.6 1025.7 1025.4 1030.5 1034.2 1029.5 1034.2 DAY-HOUR 26- 6 13- 6 29- 6 4-15 18- 6 12- 3 3- 9 29- 6 25- 6 2- 6 18- 6 8- 6 MIN. QNH PRESSURE IN HPA 1009.6 1006.4 1008.8 1008.3 1012.0 1009.4 1008.3 1008.4 1007.8 1012.2 1017.2 1013.3 1006.4 DAY-HOUR 6-12 5-12 25-15 13- 3 29-12 18-15 6-12 8-15 21-15 27-12 28-12 29-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 843.7 840.6 839.0 841.7 842.7 840.8 841.7 841.5 841.6 845.1 847.7 845.3 842.6 MAX. QFE PRESSURE IN HPA 850.1 845.8 843.5 846.6 846.0 844.8 846.2 848.0 847.3 851.8 854.8 850.8 854.8 DAY 26 13 29 5 7 12 4 29 25 2 18 8 MIN. QFE PRESSURE IN HPA 837.0 833.2 834.3 833.8 838.6 836.0 836.1 836.2 834.9 837.3 842.5 840.0 833.2 DAY 19 5 26 13 29 19 7 8 22 27 29 25 MEAN QNH PRESSURE IN HPA 1019.8 1016.3 1014.4 1017.5 1018.7 1016.4 1017.5 1017.2 1017.4 1021.5 1024.5 1021.7 1018.6 MAX. QNH PRESSURE IN HPA 1027.3 1022.3 1019.6 1023.2 1022.5 1021.1 1022.8 1024.9 1024.0 1029.3 1032.8 1028.1 1032.8 DAY 26 13 29 5 7 12 4 29 25 2 18 8 MIN. QNH PRESSURE IN HPA 1012.0 1007.6 1008.9 1008.3 1013.9 1010.9 1011.0 1011.1 1009.6 1012.4 1018.5 1015.5 1007.6 DAY 19 5 26 13 29 19 7 8 22 27 29 25 MEAN QFF PRESSURE IN HPA 1025.7 1019.0 1016.5 1014.8 1011.2 1006.6 1005.7 1005.5 1007.6 1017.5 1024.9 1022.7 1014.8 MAX. QFF PRESSURE IN HPA 1035.3 1028.9 1023.9 1028.2 1017.7 1017.1 1009.5 1016.8 1017.0 1027.8 1037.0 1032.3 1037.0 DAY 26 4 17 5 7 12 9 30 25 19 18 4 MIN. QFF PRESSURE IN HPA 1014.7 1008.3 1008.0 1002.2 1003.9 998.9 999.6 998.5 1000.1 1004.4 1015.8 1014.9 998.5 DAY 6 10 26 13 25 19 6 8 22 27 7 25 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 844.7 841.7 839.8 842.5 843.2 841.0 842.2 842.0 842.1 846.0 848.6 846.2 843.3 MAX. QFE PRESSURE IN HPA 850.9 847.0 844.1 847.5 846.9 844.8 846.8 848.7 848.5 852.8 856.0 852.0 856.0 DAY 26 13 29 4 18 12 3 29 25 2 18 8 MIN. QFE PRESSURE IN HPA 837.9 832.7 835.0 835.5 838.6 836.2 836.3 836.8 836.7 838.3 843.1 840.6 832.7 DAY 6 5 26 13 29 19 7 8 21 27 29 25 MEAN QNH PRESSURE IN HPA 1021.0 1017.5 1015.3 1018.4 1019.3 1016.7 1018.1 1017.8 1018.0 1022.5 1025.5 1022.8 1019.4 MAX. QNH PRESSURE IN HPA 1028.2 1023.7 1020.3 1024.3 1023.6 1021.1 1023.5 1025.7 1025.4 1030.5 1034.2 1029.5 1034.2 DAY 26 13 29 4 18 12 3 29 25 2 18 8 MIN. QNH PRESSURE IN HPA 1013.1 1007.0 1009.7 1010.3 1013.9 1011.1 1011.2 1011.8 1011.7 1013.6 1019.2 1016.2 1007.0 DAY 6 5 26 13 29 19 7 8 21 27 29 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 844.1 841.4 839.6 841.9 842.7 840.3 841.6 841.1 841.1 845.1 847.6 845.3 842.6 MAX. QFE PRESSURE IN HPA 849.8 846.8 842.9 847.6 845.9 843.8 846.9 848.1 847.2 851.7 855.2 851.1 855.2 DAY 10 13 29 4 17 12 3 29 25 2 18 8 MIN. QFE PRESSURE IN HPA 835.9 832.4 835.6 835.7 838.4 836.2 835.6 835.7 835.5 837.8 842.5 840.0 832.4 DAY 6 5 26 10 29 19 7 8 21 27 29 25 MEAN QNH PRESSURE IN HPA 1020.3 1017.1 1015.0 1017.7 1018.6 1015.9 1017.4 1016.8 1016.8 1021.5 1024.4 1021.7 1018.6 MAX. QNH PRESSURE IN HPA 1027.0 1023.5 1018.9 1024.4 1022.4 1020.0 1023.6 1025.0 1023.9 1029.2 1033.3 1028.5 1033.3 DAY 10 13 29 4 17 12 3 29 25 2 18 8 MIN. QNH PRESSURE IN HPA 1010.8 1006.7 1010.4 1010.5 1013.7 1011.1 1010.4 1010.5 1010.3 1013.0 1018.5 1015.5 1006.7 DAY 6 5 26 10 29 19 7 8 21 27 29 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 843.2 840.3 838.7 841.0 841.6 839.0 840.2 839.6 839.6 843.8 846.6 844.3 841.5 MAX. QFE PRESSURE IN HPA 848.6 844.9 842.1 847.6 845.3 842.9 845.3 846.7 845.9 850.1 854.0 850.7 854.0 DAY 10 8 28 4 17 11 3 29 25 1 18 7 MIN. QFE PRESSURE IN HPA 834.9 832.2 834.8 835.0 837.0 835.1 833.8 834.1 834.0 837.1 841.4 838.1 832.2 DAY 6 5 25 10 29 19 6 8 21 27 28 29 MEAN QNH PRESSURE IN HPA 1019.2 1015.9 1014.0 1016.7 1017.4 1014.4 1015.7 1015.1 1015.1 1019.9 1023.2 1020.6 1017.3 MAX. QNH PRESSURE IN HPA 1025.6 1021.2 1018.0 1024.4 1021.7 1018.9 1021.7 1023.3 1022.4 1027.3 1031.9 1028.0 1031.9 DAY 10 8 28 4 17 11 3 29 25 1 18 7 MIN. QNH PRESSURE IN HPA 1009.6 1006.4 1009.5 1009.7 1012.0 1009.8 1008.3 1008.7 1008.5 1012.2 1017.2 1013.3 1006.4 DAY 6 5 25 10 29 19 6 8 21 27 28 29 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 843.6 840.5 838.9 840.9 841.4 838.6 839.9 839.3 839.6 843.8 847.0 844.8 841.5 MAX. QFE PRESSURE IN HPA 849.7 844.9 843.0 847.7 845.4 842.9 844.7 846.7 845.9 850.4 854.6 851.1 854.6 DAY 9 13 28 4 7 11 3 29 25 18 18 7 MIN. QFE PRESSURE IN HPA 835.3 833.4 834.2 834.8 837.0 834.7 834.9 833.9 833.4 837.7 841.8 838.5 833.4 DAY 6 5 25 12 29 18 7 8 21 26 28 29 MEAN QNH PRESSURE IN HPA 1019.8 1016.1 1014.2 1016.6 1017.2 1013.9 1015.5 1014.7 1015.0 1020.0 1023.7 1021.1 1017.3 MAX. QNH PRESSURE IN HPA 1026.8 1021.2 1019.0 1024.5 1021.8 1018.9 1021.0 1023.3 1022.4 1027.7 1032.6 1028.5 1032.6 DAY 9 13 28 4 7 11 3 29 25 18 18 7 MIN. QNH PRESSURE IN HPA 1010.1 1007.8 1008.8 1009.5 1012.0 1009.4 1009.6 1008.4 1007.8 1012.9 1017.6 1013.8 1007.8 DAY 6 5 25 12 29 18 7 8 21 26 28 29 MEAN QFF PRESSURE IN HPA 1025.7 1018.8 1016.0 1013.8 1009.5 1004.0 1003.6 1002.9 1005.3 1015.9 1024.1 1022.0 1013.5 MAX. QFF PRESSURE IN HPA 1034.7 1028.4 1021.6 1029.6 1016.5 1014.3 1007.3 1015.0 1015.6 1026.5 1036.6 1031.8 1036.6 DAY 25 3 16 4 7 11 14 29 30 18 18 3 MIN. QFF PRESSURE IN HPA 1010.7 1009.4 1006.4 1003.6 1002.0 997.7 997.8 995.6 998.9 1006.7 1015.7 1011.8 995.6 DAY 6 9 25 12 29 18 5 8 8 26 6 29 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.2 0.1 4.0 12.6 17.9 24.0 26.1 27.6 20.2 17.1 7.2 2.7 13.4 MINIMUN AIR TEMPERATURE (C) -5.1 -6.5 -1.6 4.7 9.0 14.6 16.7 16.6 10.1 8.0 2.0 -1.7 5.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 18 17 8 1 0 0 0 0 0 0 0 7 51 DAYS WITH FREEZING MIN.<= 0 26 26 23 4 0 0 0 0 0 0 7 20 106 TEMPERATURE RECORDS LOWEST(C) -14.6 -13.6 -7.6 -5.0 4.0 10.2 13.0 13.0 4.8 3.4 -2.0 -8.6 -14.6 DAY 29 6 9 12 6 4 8 21 15 26 28 29 MAXIMUM AIR TEMPERATURE (C) 6.2 5.3 8.5 17.6 23.3 29.7 32.2 34.4 26.4 22.9 11.4 6.3 18.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 17 22 29 6 0 0 0 75 DAYS WITH MAXIMUM TEMP. <= 0 3 4 1 0 0 0 0 0 0 0 0 0 8 TEMPERATURE RECORDS HIGHEST(C) 14.4 14.0 16.0 28.4 30.0 33.0 39.0 38.4 31.6 28.0 17.0 12.8 39.0 DAY 6 18 22 26 28 27 29 14 1 2 17 7 DIF. BETWEEN (MAX.-MIN.) (C) 11.3 11.8 10.1 12.9 14.3 15.1 15.5 17.8 16.3 14.9 9.4 8.0 13.1 MEAN DAILY TEMP. (MDT) (C) 0.6 -0.6 3.5 11.2 16.1 22.1 24.4 25.5 18.2 15.4 6.7 2.3 12.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 1.8 49.5 109.4 139.9 5.6 0.0 0.0 0.0 306.2 HEATING DEG. DAYS(BASE 18 0C) 540.9 521.6 450.3 208.1 73.8 0.8 0.0 0.0 30.1 83.2 339.7 485.5 2734.0 DEWPOINT (MEAN C) -8.7 -9.8 -5.3 -3.0 1.7 5.3 9.3 6.0 1.5 0.5 -0.1 -3.1 -0.5 MIXING RATIO (G/KG) 2.47 2.33 3.24 3.87 5.39 6.91 8.95 7.27 5.27 4.86 4.61 3.73 4.91 VAPOUR PRESSURE (HPA) 3.33 3.14 4.34 5.19 7.22 9.21 11.87 9.69 7.08 6.55 6.22 5.02 6.57 SATURATION DEF. (HPA) 3.86 3.50 4.18 10.75 14.30 22.08 23.86 29.39 18.26 14.05 4.27 2.62 12.59 RELATIVE HUMIDITY (MEAN %) 52 51 56 39 38 35 39 30 35 37 63 69 45 RELATIVE HUMIDITY (MAX. %) 71 71 77 61 64 60 63 52 60 58 80 85 67 RELATIVE HUMIDITY (MIN. %) 36 35 39 25 22 21 24 17 20 24 49 53 30 RELATIVE HUMIDITY (MEAN% 03UTC) 66 69 73 60 62 58 63 52 58 57 79 83 65 RELATIVE HUMIDITY (MEAN% 09UTC) 42 40 46 30 27 26 28 20 24 27 53 60 35 RELATIVE HUMIDITY (MEAN% 15UTC) 51 47 52 34 38 30 34 23 33 36 62 69 42 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 20.4 20.7 51.9 30.5 16.7 12.8 1.3 0.0 0.5 6.9 27.5 40.2 229.4 DAYS WITH PRECIPITATION >=10 1 0 1 1 0 0 0 0 0 0 1 1 5 DAYS WITH PRECIPITATION >= 5 1 2 4 3 2 2 0 0 0 1 3 3 21 DAYS WITH PRECIPITATION >= 1 2 3 11 6 3 2 1 0 0 2 7 7 44 DAYS WITH PRECIPITATION 5 8 17 10 10 9 2 0 3 5 8 10 87 GREATEST DAILY PRECIPITATION 17.3 9.3 15.0 14.0 6.0 6.0 1.0 0.0 0.3 5.1 11.2 15.0 17.3 DAY 16 19 29 5 19 7 6 ** 9 21 3 1 DAY WITH THUNDER STORM 0 0 0 2 6 4 2 0 0 1 0 0 15 DAYS WITH SNOW OR SLEET 3 4 11 2 0 0 0 0 0 0 0 7 27 DAYS WITH DUST 0 1 0 2 0 0 0 0 0 1 0 0 4 WIND DIRECTION (PREVAILING) 315 315 315 270 45 45 45 135 270 270 135 315 315 PREVAILING WIND SPEED(KNOTS) 6.9 7.0 7.4 8.5 10.7 12.3 13.7 8.9 8.3 8.1 5.5 6.7 6.3 PREVAILING WIND PERCENT 32.9 37.9 20.0 30.0 17.4 16.7 25.2 22.6 15.3 19.4 16.0 18.7 15.6 CALMS PERCENT OF WIND 37.4 30.7 24.5 13.3 29.7 22.0 19.4 15.5 24.0 34.2 42.0 34.2 27.2 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 306 301 277 257 347 46 42 101 4 276 41 301 337 VECTOR WIND MAGNITUDE(KNOTS) 2.8 3.0 2.1 4.0 2.0 1.6 5.2 4.1 1.7 2.5 1.5 1.9 1.2 WIND STEADINESES (MEAN %) 63.6 61.2 33.9 57.1 35.7 24.2 64.2 56.9 23.3 54.3 36.6 43.2 20.3 WIND SPEED (MEAN KNOTS) 4.4 4.9 6.2 7.0 5.6 6.6 8.1 7.2 7.3 4.6 4.1 4.4 5.9 FASTEST WIND DIRECTION 250 220 10 250 30 20 20 30 30 250 30 270 20 FASTEST WIND SPEED (KNOTS) 16 17 23 29 17 31 25 21 29 17 19 16 31 DAY 6 5 13 19 10 23 19 7 8 2 23 10 DAYS WITH SKY CLEAR (0-2)/8 18 18 6 7 12 18 27 30 28 18 7 9 198 DAYS WITH P.CLOUDY (3-6)/8 8 8 13 16 16 11 4 1 2 11 12 12 114 DAYS WITH CLOUDY (7-8)/8 5 2 12 7 3 1 0 0 0 2 11 10 53 DAYS WITH VISIBILITY =< 2 KM 1 0 2 1 0 0 0 0 0 0 1 4 9 DURATION OF SUNSHINE HOURS 206.8 225.0 177.5 231.3 272.0 316.0 341.7 340.3 315.9 254.8 139.8 145.0 2966.1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.5 841.8 838.0 839.7 842.5 839.3 837.0 839.3 843.2 844.8 845.4 842.9 841.3 MAX. QFE PRESSURE IN HPA 848.7 848.6 850.2 846.1 848.3 844.0 843.0 843.9 848.8 850.4 855.2 850.5 855.2 DAY-HOUR 19- 9 7- 9 11- 6 24- 6 12- 6 8- 6 19- 6 21- 6 19- 6 9- 6 8- 6 28- 6 MIN. QFE PRESSURE IN HPA 831.5 833.9 829.2 830.1 832.1 832.3 831.1 832.2 835.5 839.0 841.0 834.1 829.2 DAY-HOUR 31-12 5-12 7- 9 9-12 4-12 24-15 15-15 5-15 2-15 6-12 19-12 10-12 MEAN QNH PRESSURE IN HPA 1017.3 1017.6 1013.2 1015.2 1018.4 1014.7 1012.0 1014.7 1019.2 1021.1 1021.9 1018.9 1017.0 MAX. QNH PRESSURE IN HPA 1025.7 1025.6 1027.4 1022.6 1025.2 1020.2 1019.0 1020.1 1025.8 1027.7 1033.3 1027.8 1033.3 DAY-HOUR 19- 9 7- 9 11- 6 24- 6 12- 6 8- 6 19- 6 21- 6 19- 6 9- 6 8- 6 28- 6 MIN. QNH PRESSURE IN HPA 1005.6 1008.4 1002.9 1004.0 1006.3 1006.5 1005.2 1006.4 1010.3 1014.4 1016.7 1008.7 1002.9 DAY-HOUR 31-12 5-12 7- 9 9-12 4-12 24-15 15-15 5-15 2-15 6-12 19-12 10-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 841.7 841.7 838.2 840.1 843.0 840.0 837.8 840.2 843.8 845.3 845.6 842.7 841.7 MAX. QFE PRESSURE IN HPA 848.0 847.3 849.2 845.2 848.2 843.8 842.2 843.3 848.0 849.1 853.8 848.6 853.8 DAY 24 17 11 24 16 8 19 25 19 9 8 28 MIN. QFE PRESSURE IN HPA 831.7 836.5 831.1 831.9 836.4 835.5 834.1 835.5 838.9 842.2 842.1 834.4 831.1 DAY 16 5 7 5 5 30 16 5 3 2 20 10 MEAN QNH PRESSURE IN HPA 1017.5 1017.6 1013.4 1015.6 1019.1 1015.6 1013.0 1015.7 1020.0 1021.7 1022.0 1018.7 1017.5 MAX. QNH PRESSURE IN HPA 1024.9 1024.0 1026.3 1021.6 1025.1 1020.0 1018.1 1019.4 1024.9 1026.1 1031.6 1025.6 1031.6 DAY 24 17 11 24 16 8 19 25 19 9 8 28 MIN. QNH PRESSURE IN HPA 1005.9 1011.4 1005.2 1006.1 1011.3 1010.3 1008.7 1010.3 1014.2 1018.1 1018.0 1009.0 1005.2 DAY 16 5 7 5 5 30 16 5 3 2 20 10 MEAN QFF PRESSURE IN HPA 1021.2 1022.5 1014.9 1011.8 1012.5 1004.7 1000.6 1003.0 1012.3 1015.6 1021.7 1021.2 1013.5 MAX. QFF PRESSURE IN HPA 1032.7 1033.4 1030.0 1022.5 1020.7 1011.8 1007.7 1010.3 1021.6 1021.4 1032.7 1032.7 1033.4 DAY 24 7 11 12 16 7 8 21 15 29 7 29 MIN. QFF PRESSURE IN HPA 1007.0 1010.7 1004.2 1004.0 1002.5 996.3 994.4 996.2 1002.9 1009.2 1014.5 1009.1 994.4 DAY 16 22 7 5 4 30 11 14 3 7 5 10 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.5 842.7 839.0 840.8 843.3 840.3 838.1 840.7 844.4 846.0 846.4 843.7 842.3 MAX. QFE PRESSURE IN HPA 848.5 848.1 850.2 846.1 848.3 844.0 843.0 843.9 848.8 850.4 855.2 850.5 855.2 DAY 19 7 11 24 12 8 19 21 19 9 8 28 MIN. QFE PRESSURE IN HPA 833.3 836.5 831.1 833.6 834.9 836.0 834.6 835.8 839.5 842.6 843.0 835.6 831.1 DAY 16 5 7 5 4 24 11 5 2 2 20 10 MEAN QNH PRESSURE IN HPA 1018.5 1018.7 1014.3 1016.5 1019.4 1015.9 1013.4 1016.3 1020.7 1022.5 1023.0 1019.8 1018.2 MAX. QNH PRESSURE IN HPA 1025.4 1025.0 1027.4 1022.6 1025.2 1020.2 1019.0 1020.1 1025.8 1027.7 1033.3 1027.8 1033.3 DAY 19 7 11 24 12 8 19 21 19 9 8 28 MIN. QNH PRESSURE IN HPA 1007.7 1011.4 1005.2 1008.1 1009.6 1010.9 1009.2 1010.6 1014.9 1018.6 1019.0 1010.4 1005.2 DAY 16 5 7 5 4 24 11 5 2 2 20 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.9 842.2 838.2 840.0 842.6 839.6 837.3 839.7 843.5 844.9 845.6 843.0 841.6 MAX. QFE PRESSURE IN HPA 848.7 848.6 849.2 845.1 847.8 843.6 842.0 843.0 847.7 849.7 854.3 849.4 854.3 DAY 19 7 11 13 12 6 19 24 19 9 8 28 MIN. QFE PRESSURE IN HPA 833.0 835.0 829.2 831.8 834.5 834.5 833.3 834.8 838.0 841.4 842.0 834.9 829.2 DAY 31 5 7 9 4 24 11 5 2 2 19 10 MEAN QNH PRESSURE IN HPA 1017.8 1018.1 1013.5 1015.6 1018.5 1015.1 1012.4 1015.2 1019.7 1021.3 1022.1 1019.0 1017.4 MAX. QNH PRESSURE IN HPA 1025.7 1025.6 1026.3 1021.5 1024.6 1019.7 1017.9 1019.0 1024.5 1026.8 1032.2 1026.5 1032.2 DAY 19 7 11 13 12 6 19 24 19 9 8 28 MIN. QNH PRESSURE IN HPA 1007.4 1009.7 1002.9 1006.0 1009.1 1009.1 1007.7 1009.5 1013.2 1017.2 1017.9 1009.6 1002.9 DAY 31 5 7 9 4 24 11 5 2 2 19 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.6 841.0 837.2 838.9 841.7 838.3 836.0 838.1 842.1 843.8 844.6 842.2 840.4 MAX. QFE PRESSURE IN HPA 847.0 847.4 847.7 844.4 846.7 842.1 840.9 841.8 846.4 848.5 852.7 848.3 852.7 DAY 23 7 11 13 12 8 19 24 14 9 7 28 MIN. QFE PRESSURE IN HPA 831.5 833.9 829.3 830.1 832.1 832.8 831.8 833.1 836.1 839.0 841.0 834.1 829.3 DAY 31 5 25 9 4 24 16 14 2 6 19 10 MEAN QNH PRESSURE IN HPA 1016.3 1016.7 1012.2 1014.3 1017.5 1013.6 1010.9 1013.4 1018.0 1019.9 1020.9 1018.1 1016.0 MAX. QNH PRESSURE IN HPA 1023.7 1024.2 1024.5 1020.7 1023.3 1018.0 1016.6 1017.6 1023.0 1025.4 1030.3 1025.2 1030.3 DAY 23 7 11 13 12 8 19 24 14 9 7 28 MIN. QNH PRESSURE IN HPA 1005.6 1008.4 1003.1 1004.0 1006.3 1007.1 1006.0 1007.5 1011.0 1014.4 1016.7 1008.7 1003.1 DAY 31 5 25 9 4 24 16 14 2 6 19 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.0 841.2 837.5 838.9 841.9 838.0 835.5 837.6 841.9 844.1 845.1 842.9 840.5 MAX. QFE PRESSURE IN HPA 847.6 847.4 847.4 844.9 846.3 843.1 840.3 841.2 847.2 848.7 853.5 848.9 853.5 DAY 23 7 11 13 12 6 19 24 14 9 7 28 MIN. QFE PRESSURE IN HPA 832.0 836.5 830.0 830.6 834.9 832.3 831.1 832.2 835.5 839.4 841.5 835.5 830.0 DAY 31 22 25 9 4 24 15 5 2 6 19 9 MEAN QNH PRESSURE IN HPA 1016.7 1016.9 1012.6 1014.3 1017.7 1013.2 1010.3 1012.8 1017.8 1020.3 1021.4 1018.9 1016.1 MAX. QNH PRESSURE IN HPA 1024.4 1024.2 1024.2 1021.2 1022.9 1019.2 1015.9 1016.9 1023.9 1025.7 1031.3 1025.9 1031.3 DAY 23 7 11 13 12 6 19 24 14 9 7 28 MIN. QNH PRESSURE IN HPA 1006.2 1011.4 1003.9 1004.6 1009.6 1006.5 1005.2 1006.4 1010.3 1014.8 1017.3 1010.3 1003.9 DAY 31 22 25 9 4 24 15 5 2 6 19 9 MEAN QFF PRESSURE IN HPA 1020.5 1021.7 1013.9 1010.3 1011.1 1002.3 997.9 999.9 1010.0 1014.4 1021.0 1021.3 1012.0 MAX. QFF PRESSURE IN HPA 1031.9 1034.3 1026.5 1020.4 1017.3 1011.6 1005.6 1006.2 1020.6 1021.2 1032.7 1033.4 1034.3 DAY 23 7 10 12 11 6 19 21 14 31 7 28 MIN. QFF PRESSURE IN HPA 1010.2 1010.7 1003.4 1002.3 1003.6 993.4 991.9 992.5 999.5 1006.5 1015.3 1009.9 991.9 DAY 31 22 25 9 4 30 15 5 2 6 19 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -2.4 -1.0 6.1 14.3 17.6 25.0 25.4 26.2 21.7 15.6 11.6 6.0 13.8 MINIMUN AIR TEMPERATURE (C) -7.1 -6.0 0.3 6.3 9.6 15.2 16.2 16.8 12.1 6.4 3.9 -0.6 6.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 24 19 4 0 0 0 0 0 0 0 0 2 49 DAYS WITH FREEZING MIN.<= 0 31 26 13 0 0 0 0 0 0 0 1 22 93 TEMPERATURE RECORDS LOWEST(C) -14.2 -15.6 -8.0 0.8 4.0 11.6 10.0 12.0 8.0 1.6 -1.0 -4.6 -15.6 DAY 11 17 3 25 2 4 26 7 28 25 30 23 MAXIMUM AIR TEMPERATURE (C) 1.3 2.5 10.1 19.3 22.7 30.5 31.1 32.2 27.8 21.5 16.8 11.4 18.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 18 23 25 10 0 0 0 76 DAYS WITH MAXIMUM TEMP. <= 0 7 11 1 0 0 0 0 0 0 0 0 0 19 TEMPERATURE RECORDS HIGHEST(C) 5.0 12.0 18.2 27.0 29.0 36.8 35.6 37.6 35.5 28.0 20.8 17.6 37.6 DAY 26 7 24 15 8 28 13 29 1 6 6 18 DIF. BETWEEN (MAX.-MIN.) (C) 8.4 8.5 9.8 13.0 13.1 15.3 14.9 15.4 15.7 15.1 12.9 12.0 12.8 MEAN DAILY TEMP. (MDT) (C) -2.9 -1.7 5.2 12.8 16.1 22.9 23.7 24.5 20.0 13.9 10.4 5.4 12.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 1.1 62.2 85.1 110.4 17.8 0.0 0.0 0.0 276.7 HEATING DEG. DAYS(BASE 18 0C) 647.0 551.9 397.4 157.2 74.4 0.0 0.0 0.0 11.9 129.5 228.8 389.9 2587.9 DEWPOINT (MEAN C) -7.4 -7.2 -2.8 0.1 5.5 6.0 7.8 9.0 5.0 -0.3 0.1 -2.5 1.1 MIXING RATIO (G/KG) 2.74 2.77 3.90 4.79 6.97 7.13 8.29 8.74 6.80 4.56 4.70 3.84 5.44 VAPOUR PRESSURE (HPA) 3.69 3.73 5.23 6.43 9.33 9.53 11.02 11.65 9.10 6.16 6.34 5.20 7.28 SATURATION DEF. (HPA) 1.59 2.25 4.75 11.11 11.91 23.63 22.83 23.94 18.37 12.94 8.00 4.60 12.16 RELATIVE HUMIDITY (MEAN %) 71 65 58 44 49 33 37 37 39 40 51 59 49 RELATIVE HUMIDITY (MAX. %) 84 79 76 71 74 56 58 60 65 60 70 78 69 RELATIVE HUMIDITY (MIN. %) 56 52 45 27 34 21 24 24 24 25 36 41 34 RELATIVE HUMIDITY (MEAN% 03UTC) 80 78 75 71 73 55 58 60 64 59 68 76 68 RELATIVE HUMIDITY (MEAN% 09UTC) 62 58 50 32 38 24 27 27 29 29 40 46 39 RELATIVE HUMIDITY (MEAN% 15UTC) 75 63 52 38 46 29 33 33 36 40 51 61 46 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 61.5 33.6 106.0 28.2 61.6 0.4 5.9 3.3 1.2 5.0 16.0 12.3 335.0 DAYS WITH PRECIPITATION >=10 4 0 4 0 2 0 0 0 0 0 0 0 10 DAYS WITH PRECIPITATION >= 5 5 3 5 3 3 0 0 0 0 0 1 1 21 DAYS WITH PRECIPITATION >= 1 10 8 8 7 10 0 3 1 0 2 4 4 57 DAYS WITH PRECIPITATION 14 11 12 12 14 1 5 3 2 2 6 5 87 GREATEST DAILY PRECIPITATION 12.0 9.0 53.0 6.0 18.0 0.4 2.0 3.0 0.6 3.0 6.0 9.0 53.0 DAY 9 15 18 21 29 1 18 2 13 11 29 4 DAY WITH THUNDER STORM 0 0 0 6 9 1 4 2 1 0 0 0 23 DAYS WITH SNOW OR SLEET 14 8 2 0 0 0 0 0 0 0 0 2 26 DAYS WITH DUST 0 0 0 0 0 0 0 1 0 0 0 0 1 WIND DIRECTION (PREVAILING) 360 315 225 315 135 45 45 135 45 315 315 135 315 PREVAILING WIND SPEED(KNOTS) 5.7 9.0 13.2 8.4 7.9 13.7 13.6 8.4 12.7 6.2 5.9 8.6 7.1 PREVAILING WIND PERCENT 15.5 30.0 21.9 22.7 24.5 18.0 23.2 20.0 18.0 16.8 18.0 20.6 15.3 CALMS PERCENT OF WIND 33.5 8.6 14.8 11.3 12.3 11.3 25.2 17.4 18.7 24.5 37.3 35.5 21.0 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 322 315 252 291 9 42 35 59 39 11 271 247 352 VECTOR WIND MAGNITUDE(KNOTS) 1.7 4.5 5.0 2.7 0.2 4.7 4.5 3.9 2.4 2.8 1.7 0.6 1.5 WIND STEADINESES (MEAN %) 37.8 52.3 56.8 31.8 2.6 49.0 60.0 49.4 31.6 38.9 33.3 12.2 20.5 WIND SPEED (MEAN KNOTS) 4.5 8.6 8.8 8.5 7.7 9.6 7.5 7.9 7.6 7.2 5.1 4.9 7.3 FASTEST WIND DIRECTION 30 270 240 260 30 30 10 30 30 20 30 30 260 FASTEST WIND SPEED (KNOTS) 17 29 25 41 27 31 23 27 27 29 23 21 41 DAY 2 14 25 18 1 13 8 21 10 8 23 2 DAYS WITH SKY CLEAR (0-2)/8 9 10 13 7 13 24 24 24 29 25 17 11 206 DAYS WITH P.CLOUDY (3-6)/8 9 9 8 16 13 6 7 7 1 5 8 16 105 DAYS WITH CLOUDY (7-8)/8 13 9 10 7 5 0 0 0 0 1 5 4 54 DAYS WITH VISIBILITY =< 2 KM 9 4 1 1 0 0 0 0 0 0 0 1 16 DURATION OF SUNSHINE HOURS 145.6 168.8 201.0 248.4 299.6 350.6 345.7 331.7 304.6 282.2 203.8 160.6 3042.6 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 840.7 841.7 840.1 841.4 842.3 841.7 838.7 841.4 842.2 845.6 845.8 846.4 842.3 MAX. QFE PRESSURE IN HPA 848.7 853.5 847.4 850.6 849.6 847.6 846.6 845.8 846.8 851.3 852.0 853.2 853.5 DAY-HOUR 22- 6 23- 6 28- 6 12- 3 8- 6 17- 3 20- 6 25- 6 29- 6 14- 6 21- 6 29- 6 MIN. QFE PRESSURE IN HPA 829.5 830.5 829.6 833.5 834.9 836.0 830.9 836.8 836.6 838.0 839.3 839.5 829.5 DAY-HOUR 13- 3 14- 3 18-12 23-15 29-12 28-15 5-15 16-15 5-15 1-15 10-12 24- 3 MEAN QNH PRESSURE IN HPA 1016.4 1017.5 1015.7 1017.2 1018.2 1017.5 1014.0 1017.1 1018.1 1022.0 1022.3 1023.0 1018.2 MAX. QNH PRESSURE IN HPA 1025.7 1031.3 1024.2 1027.9 1026.7 1024.4 1023.2 1022.3 1023.5 1028.7 1029.5 1030.9 1031.3 DAY-HOUR 22- 6 23- 6 28- 6 12- 3 8- 6 17- 3 20- 6 25- 6 29- 6 14- 6 21- 6 29- 6 MIN. QNH PRESSURE IN HPA 1003.3 1004.4 1003.4 1008.0 1009.6 1010.9 1004.9 1011.8 1011.6 1013.2 1014.7 1014.9 1003.3 DAY-HOUR 13- 3 14- 3 18-12 23-15 29-12 28-15 5-15 16-15 5-15 1-15 10-12 24- 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 840.4 841.3 840.3 841.8 842.7 842.5 839.5 842.1 843.0 846.0 846.0 846.5 842.7 MAX. QFE PRESSURE IN HPA 847.8 852.5 846.2 850.6 848.5 847.6 846.2 845.0 846.2 850.9 851.3 851.7 852.5 DAY 22 23 26 12 8 17 20 25 27 14 21 9 MIN. QFE PRESSURE IN HPA 829.5 830.5 832.9 835.6 836.3 839.4 833.9 839.0 839.3 840.6 841.2 839.5 829.5 DAY 13 14 15 22 30 27 5 23 5 1 11 24 MEAN QNH PRESSURE IN HPA 1016.0 1017.0 1015.8 1017.7 1018.7 1018.4 1014.9 1018.0 1019.0 1022.5 1022.6 1023.1 1018.6 MAX. QNH PRESSURE IN HPA 1024.6 1030.1 1022.8 1027.9 1025.4 1024.4 1022.8 1021.4 1022.8 1028.2 1028.7 1029.2 1030.1 DAY 22 23 26 12 8 17 20 25 27 14 21 9 MIN. QNH PRESSURE IN HPA 1003.3 1004.4 1007.3 1010.4 1011.2 1014.8 1008.4 1014.4 1014.7 1016.2 1016.9 1014.9 1003.3 DAY 13 14 15 22 30 27 5 23 5 1 11 24 MEAN QFF PRESSURE IN HPA 1022.0 1022.0 1016.0 1012.9 1011.8 1007.1 1003.2 1005.9 1010.0 1017.7 1019.8 1024.1 1014.4 MAX. QFF PRESSURE IN HPA 1031.4 1037.6 1024.1 1023.7 1022.2 1015.3 1013.4 1010.1 1017.6 1026.7 1026.4 1030.4 1037.6 DAY 23 23 4 7 4 17 21 8 27 25 25 5 MIN. QFF PRESSURE IN HPA 1010.8 1003.4 1004.3 1005.3 1002.6 1000.5 994.8 1001.4 1001.5 1007.2 1010.4 1015.5 994.8 DAY 13 8 30 18 21 28 5 13 3 2 11 21 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 841.3 842.2 841.1 842.4 843.3 842.9 839.8 842.6 843.5 846.8 846.9 847.4 843.3 MAX. QFE PRESSURE IN HPA 848.7 853.5 847.4 850.6 849.6 847.4 846.6 845.8 846.8 851.3 852.0 853.2 853.5 DAY 22 23 28 12 8 17 20 25 29 14 21 29 MIN. QFE PRESSURE IN HPA 830.8 832.1 834.0 836.0 837.4 839.7 833.7 839.3 839.7 841.2 842.3 840.9 830.8 DAY 13 8 15 23 21 27 5 13 5 1 10 24 MEAN QNH PRESSURE IN HPA 1017.1 1018.1 1016.8 1018.3 1019.4 1018.9 1015.3 1018.6 1019.6 1023.4 1023.6 1024.2 1019.4 MAX. QNH PRESSURE IN HPA 1025.7 1031.3 1024.2 1027.9 1026.7 1024.2 1023.2 1022.3 1023.5 1028.7 1029.5 1030.9 1031.3 DAY 22 23 28 12 8 17 20 25 29 14 21 29 MIN. QNH PRESSURE IN HPA 1004.8 1006.3 1008.5 1010.9 1012.5 1015.2 1008.2 1014.7 1015.2 1016.9 1018.2 1016.6 1004.8 DAY 13 8 15 23 21 27 5 13 5 1 10 24 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.1 842.0 840.4 841.8 842.6 842.2 839.0 841.8 842.5 845.8 845.9 846.5 842.6 MAX. QFE PRESSURE IN HPA 848.2 853.2 846.6 850.0 848.8 846.5 846.1 844.8 845.8 850.9 851.5 852.4 853.2 DAY 22 23 27 12 8 17 20 9 27 10 21 29 MIN. QFE PRESSURE IN HPA 831.7 832.2 832.2 835.3 836.2 838.8 832.9 838.5 838.7 840.3 840.8 840.5 831.7 DAY 13 8 18 21 21 27 5 22 5 1 10 21 MEAN QNH PRESSURE IN HPA 1016.8 1017.8 1016.0 1017.6 1018.6 1018.0 1014.3 1017.6 1018.4 1022.3 1022.4 1023.1 1018.6 MAX. QNH PRESSURE IN HPA 1025.1 1030.9 1023.2 1027.2 1025.8 1023.1 1022.6 1021.1 1022.3 1028.2 1028.9 1030.0 1030.9 DAY 22 23 27 12 8 17 20 9 27 10 21 29 MIN. QNH PRESSURE IN HPA 1005.9 1006.4 1006.4 1010.1 1011.1 1014.1 1007.3 1013.8 1014.0 1015.9 1016.5 1016.1 1005.9 DAY 13 8 18 21 21 27 5 22 5 1 10 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.2 841.2 839.4 840.7 841.5 840.8 837.8 840.4 840.9 844.6 844.8 845.5 841.5 MAX. QFE PRESSURE IN HPA 847.2 852.3 846.0 849.4 847.6 845.3 844.7 843.5 845.0 850.5 850.6 851.1 852.3 DAY 22 22 27 12 8 16 20 25 12 10 21 29 MIN. QFE PRESSURE IN HPA 832.4 831.6 829.6 833.7 834.9 836.8 831.6 837.1 837.0 838.5 839.3 840.6 829.6 DAY 13 8 18 21 29 28 5 13 5 1 10 18 MEAN QNH PRESSURE IN HPA 1015.8 1017.0 1014.8 1016.3 1017.3 1016.5 1012.9 1016.0 1016.6 1020.9 1021.1 1021.9 1017.3 MAX. QNH PRESSURE IN HPA 1023.9 1029.9 1022.5 1026.5 1024.4 1021.7 1021.0 1019.6 1021.4 1027.8 1027.9 1028.5 1029.9 DAY 22 22 27 12 8 16 20 25 12 10 21 29 MIN. QNH PRESSURE IN HPA 1006.7 1005.7 1003.4 1008.2 1009.6 1011.8 1005.7 1012.2 1012.0 1013.8 1014.7 1016.2 1003.4 DAY 13 8 18 21 29 28 5 13 5 1 10 18 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 840.6 841.8 839.6 840.6 841.5 840.4 837.4 840.0 841.0 844.8 845.3 846.2 841.6 MAX. QFE PRESSURE IN HPA 846.8 853.2 846.2 849.6 847.0 845.7 843.9 842.4 844.9 850.2 851.3 851.6 853.2 DAY 4 22 27 11 8 16 20 9 27 10 21 9 MIN. QFE PRESSURE IN HPA 832.0 832.3 830.7 833.5 835.1 836.0 830.9 836.8 836.6 838.0 839.7 840.6 830.7 DAY 12 13 18 23 21 28 5 16 5 1 10 31 MEAN QNH PRESSURE IN HPA 1016.3 1017.6 1015.0 1016.3 1017.2 1016.0 1012.5 1015.5 1016.7 1021.2 1021.8 1022.7 1017.4 MAX. QNH PRESSURE IN HPA 1023.5 1030.9 1022.8 1026.7 1023.7 1022.2 1020.1 1018.3 1021.2 1027.4 1028.7 1029.1 1030.9 DAY 4 22 27 11 8 16 20 9 27 10 21 9 MIN. QNH PRESSURE IN HPA 1006.2 1006.5 1004.7 1008.0 1009.8 1010.9 1004.9 1011.8 1011.6 1013.2 1015.2 1016.2 1004.7 DAY 12 13 18 23 21 28 5 16 5 1 10 31 MEAN QFF PRESSURE IN HPA 1022.3 1022.6 1015.0 1011.5 1010.2 1004.6 1000.6 1003.3 1007.7 1016.4 1019.0 1023.6 1013.1 MAX. QFF PRESSURE IN HPA 1030.4 1037.9 1023.4 1021.8 1021.1 1012.4 1010.3 1007.2 1015.9 1026.4 1026.0 1029.3 1037.9 DAY 22 22 21 6 3 16 20 7 27 10 23 28 MIN. QFF PRESSURE IN HPA 1012.7 1006.2 1003.8 1003.0 1001.5 996.8 991.5 998.1 999.1 1005.0 1008.7 1016.0 991.5 DAY 12 8 18 21 21 28 5 16 2 1 10 18 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.6 5.9 7.5 13.4 20.4 24.9 24.1 27.5 21.5 16.5 6.6 4.1 14.5 MINIMUN AIR TEMPERATURE (C) -3.3 -1.0 0.1 5.3 9.8 14.4 15.2 18.0 11.4 7.6 1.1 -1.3 6.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 1 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 11 4 3 0 0 0 0 0 0 0 2 6 26 DAYS WITH FREEZING MIN.<= 0 29 18 15 1 0 0 0 0 0 0 12 22 97 TEMPERATURE RECORDS LOWEST(C) -8.0 -5.6 -6.6 0.0 2.8 11.0 9.8 12.8 5.0 1.6 -6.2 -9.0 -9.0 DAY 3 5 19 10 22 8 13 31 24 26 30 5 MAXIMUM AIR TEMPERATURE (C) 5.6 10.8 12.8 18.9 26.3 31.0 29.6 33.4 27.9 22.3 11.4 8.8 19.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 6 23 14 30 10 0 0 0 83 DAYS WITH MAXIMUM TEMP. <= 0 1 0 0 0 0 0 0 0 0 0 0 1 2 TEMPERATURE RECORDS HIGHEST(C) 10.8 16.2 19.4 25.8 33.0 35.6 34.8 36.4 33.0 28.8 17.4 17.2 36.4 DAY 5 27 31 30 31 21 22 25 3 1 19 31 DIF. BETWEEN (MAX.-MIN.) (C) 8.9 11.8 12.7 13.6 16.5 16.6 14.4 15.4 16.5 14.7 10.3 10.1 13.5 MEAN DAILY TEMP. (MDT) (C) 1.1 4.9 6.4 12.1 18.1 22.7 22.4 25.7 19.7 15.0 6.2 3.7 13.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 8.0 61.0 58.6 145.7 20.8 0.0 0.0 0.0 294.1 HEATING DEG. DAYS(BASE 18 0C) 522.8 367.3 358.2 177.0 36.1 1.0 0.4 0.0 24.6 97.4 353.0 442.1 2379.8 DEWPOINT (MEAN C) -5.2 -5.8 -6.6 -2.0 -0.4 1.5 7.0 6.2 3.5 0.0 -1.9 -4.0 -0.7 MIXING RATIO (G/KG) 3.17 3.10 2.92 4.20 4.62 5.36 7.73 7.36 6.10 4.68 4.06 3.51 4.73 VAPOUR PRESSURE (HPA) 4.27 4.16 3.92 5.64 6.20 7.16 10.28 9.82 8.17 6.30 5.47 4.75 6.34 SATURATION DEF. (HPA) 2.81 5.57 7.09 10.63 19.36 26.00 21.16 28.53 19.38 13.96 4.80 3.86 13.60 RELATIVE HUMIDITY (MEAN %) 63 47 42 40 30 26 38 30 36 39 59 60 43 RELATIVE HUMIDITY (MAX. %) 81 69 66 67 59 48 60 51 61 58 78 78 65 RELATIVE HUMIDITY (MIN. %) 48 30 25 22 15 14 25 16 21 27 43 44 28 RELATIVE HUMIDITY (MEAN% 03UTC) 81 64 63 66 56 47 59 51 61 57 77 76 63 RELATIVE HUMIDITY (MEAN% 09UTC) 54 39 34 31 19 18 28 20 25 30 48 51 33 RELATIVE HUMIDITY (MEAN% 15UTC) 60 43 34 35 25 23 36 25 33 36 58 62 39 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 24.1 19.4 25.5 18.2 7.2 0.0 27.3 5.1 0.0 27.1 28.2 22.4 204.5 DAYS WITH PRECIPITATION >=10 0 0 1 1 0 0 1 0 0 1 1 0 5 DAYS WITH PRECIPITATION >= 5 3 1 1 1 0 0 3 0 0 2 2 2 15 DAYS WITH PRECIPITATION >= 1 6 7 3 4 3 0 3 2 0 4 4 7 43 DAYS WITH PRECIPITATION 6 7 10 8 7 0 4 4 0 4 8 7 65 GREATEST DAILY PRECIPITATION 6.0 6.0 17.0 13.0 4.0 0.0 17.0 4.0 0.0 13.0 17.0 7.0 17.0 DAY 9 8 21 2 5 ** 15 20 ** 27 8 10 DAY WITH THUNDER STORM 0 0 1 3 2 0 1 2 0 1 0 0 10 DAYS WITH SNOW OR SLEET 3 2 2 0 0 0 0 0 0 0 3 2 12 DAYS WITH DUST 0 0 0 0 3 0 4 2 1 2 0 0 12 WIND DIRECTION (PREVAILING) 135 315 315 315 135 45 45 135 45 270 315 315 315 PREVAILING WIND SPEED(KNOTS) 7.2 6.9 7.9 8.3 8.5 14.3 14.3 8.2 13.6 8.7 7.6 8.5 7.5 PREVAILING WIND PERCENT 20.0 28.6 15.5 17.3 20.0 20.0 24.5 18.1 17.3 16.8 19.3 25.2 15.6 CALMS PERCENT OF WIND 18.7 7.9 20.6 16.0 18.7 22.7 18.1 26.5 29.3 28.4 29.3 37.4 22.9 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 351 261 296 303 286 7 42 67 48 286 309 288 343 VECTOR WIND MAGNITUDE(KNOTS) 1.8 4.2 1.3 1.2 1.1 2.4 6.1 2.6 2.2 1.7 2.4 1.9 1.3 WIND STEADINESES (MEAN %) 26.5 52.5 18.6 15.0 15.1 29.6 64.2 38.8 37.3 27.4 35.3 38.0 18.3 WIND SPEED (MEAN KNOTS) 6.8 8.0 7.0 8.0 7.3 8.1 9.5 6.7 5.9 6.2 6.8 5.0 7.1 FASTEST WIND DIRECTION 30 240 20 90 30 20 10 10 20 270 30 270 20 FASTEST WIND SPEED (KNOTS) 23 23 35 23 29 29 35 23 29 27 25 19 35 DAY 1 22 4 8 20 7 12 7 22 18 10 28 DAYS WITH SKY CLEAR (0-2)/8 16 18 15 11 19 25 28 22 28 23 12 12 229 DAYS WITH P.CLOUDY (3-6)/8 7 7 10 17 11 4 2 9 2 5 10 12 96 DAYS WITH CLOUDY (7-8)/8 8 3 6 2 1 1 1 0 0 3 8 7 40 DAYS WITH VISIBILITY =< 2 KM 1 1 1 0 0 0 0 0 0 1 0 3 7 DURATION OF SUNSHINE HOURS 170.3 228.3 228.5 265.3 304.5 337.5 360.6 327.3 317.8 256.4 187.6 170.7 3154.8 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 843.3 840.8 839.9 841.2 841.0 838.8 838.2 840.6 841.4 844.3 844.4 847.1 841.7 MAX. QFE PRESSURE IN HPA 854.1 848.6 846.6 846.5 848.9 844.9 843.2 848.2 847.5 848.0 850.5 853.2 854.1 DAY-HOUR 2- 6 12- 6 31- 6 11- 6 28- 6 8- 6 19- 6 20- 6 30- 6 1- 6 3- 6 6- 6 MIN. QFE PRESSURE IN HPA 834.1 828.6 833.1 830.8 833.4 829.2 832.2 834.6 835.6 839.7 836.9 838.5 828.6 DAY-HOUR 9- 9 20-15 21-12 8-12 20- 9 24-15 22-15 13-15 15-15 31-15 26- 3 15-12 MEAN QNH PRESSURE IN HPA 1019.4 1016.4 1015.4 1017.0 1016.7 1014.1 1013.4 1016.2 1017.1 1020.6 1020.6 1023.8 1017.6 MAX. QNH PRESSURE IN HPA 1032.0 1025.6 1023.2 1023.1 1025.9 1021.2 1019.3 1025.1 1024.3 1024.9 1027.8 1030.9 1032.0 DAY-HOUR 2- 6 12- 6 31- 6 11- 6 28- 6 8- 6 19- 6 20- 6 30- 6 1- 6 3- 6 6- 6 MIN. QNH PRESSURE IN HPA 1008.7 1002.2 1007.5 1004.8 1007.8 1002.9 1006.4 1009.2 1010.4 1015.2 1011.9 1013.8 1002.2 DAY-HOUR 9- 9 20-15 21-12 8-12 20- 9 24-15 22-15 13-15 15-15 31-15 26- 3 15-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 843.3 841.1 840.4 841.8 841.8 839.9 839.1 841.3 842.1 844.7 844.3 847.1 842.2 MAX. QFE PRESSURE IN HPA 852.9 847.3 846.0 845.9 848.2 844.3 843.1 847.4 846.3 847.4 849.5 852.5 852.9 DAY 2 12 31 11 28 8 19 20 30 27 3 6 MIN. QFE PRESSURE IN HPA 837.0 833.8 835.3 836.4 835.9 831.3 835.4 838.3 838.3 840.7 836.9 840.4 831.3 DAY 9 6 21 8 20 25 14 13 16 31 26 14 MEAN QNH PRESSURE IN HPA 1019.4 1016.8 1016.0 1017.7 1017.6 1015.4 1014.5 1017.0 1018.0 1021.0 1020.5 1023.8 1018.1 MAX. QNH PRESSURE IN HPA 1030.6 1024.0 1022.5 1022.4 1025.1 1020.5 1019.2 1024.2 1022.9 1024.2 1026.6 1030.1 1030.6 DAY 2 12 31 11 28 8 19 20 30 27 3 6 MIN. QNH PRESSURE IN HPA 1012.0 1008.3 1010.1 1011.3 1010.8 1005.4 1010.2 1013.6 1013.6 1016.4 1011.9 1016.0 1005.4 DAY 9 6 21 8 20 25 14 13 16 31 26 14 MEAN QFF PRESSURE IN HPA 1022.7 1017.4 1015.7 1013.7 1009.5 1004.2 1003.5 1004.1 1009.2 1015.4 1020.6 1026.0 1013.5 MAX. QFF PRESSURE IN HPA 1036.6 1027.1 1026.0 1021.2 1016.6 1013.4 1010.1 1014.0 1019.2 1024.1 1032.0 1037.7 1037.7 DAY 2 12 19 10 22 17 28 20 28 27 30 6 MIN. QFF PRESSURE IN HPA 1012.9 1005.8 1009.3 1005.9 1000.3 991.3 996.9 999.4 1002.8 1010.7 1008.3 1015.2 991.3 DAY 9 20 12 14 20 25 22 13 16 18 26 14 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 844.2 842.0 841.2 842.4 842.2 840.1 839.3 841.8 842.8 845.6 845.3 848.1 842.9 MAX. QFE PRESSURE IN HPA 854.1 848.6 846.6 846.5 848.9 844.9 843.2 848.2 847.5 848.0 850.5 853.2 854.1 DAY 2 12 31 11 28 8 19 20 30 1 3 6 MIN. QFE PRESSURE IN HPA 836.7 833.8 835.5 835.7 835.0 831.4 836.2 838.5 838.9 842.0 837.3 840.7 831.4 DAY 9 20 21 8 20 25 14 13 16 31 26 14 MEAN QNH PRESSURE IN HPA 1020.4 1017.8 1016.9 1018.3 1018.1 1015.6 1014.7 1017.7 1018.8 1022.0 1021.7 1024.9 1018.9 MAX. QNH PRESSURE IN HPA 1032.0 1025.6 1023.2 1023.1 1025.9 1021.2 1019.3 1025.1 1024.3 1024.9 1027.8 1030.9 1032.0 DAY 2 12 31 11 28 8 19 20 30 1 3 6 MIN. QNH PRESSURE IN HPA 1011.7 1008.3 1010.3 1010.5 1009.7 1005.5 1011.1 1013.8 1014.2 1017.9 1012.4 1016.4 1005.5 DAY 9 20 21 8 20 25 14 13 16 31 26 14 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 843.7 841.2 840.3 841.5 841.2 839.1 838.5 841.0 841.6 844.6 844.4 847.2 842.0 MAX. QFE PRESSURE IN HPA 853.2 848.4 846.1 846.2 847.7 843.5 842.0 847.2 846.4 847.8 850.2 852.7 853.2 DAY 2 12 31 11 28 8 19 20 30 26 30 6 MIN. QFE PRESSURE IN HPA 834.1 832.0 834.4 832.6 833.4 830.8 835.1 837.3 837.6 840.9 838.2 839.5 830.8 DAY 9 20 21 8 20 25 4 13 12 31 26 15 MEAN QNH PRESSURE IN HPA 1019.8 1017.0 1015.9 1017.3 1016.9 1014.5 1013.8 1016.7 1017.4 1020.8 1020.7 1023.9 1017.9 MAX. QNH PRESSURE IN HPA 1030.9 1025.3 1022.6 1022.8 1024.5 1019.6 1017.9 1023.9 1023.0 1024.6 1027.4 1030.3 1030.9 DAY 2 12 31 11 28 8 19 20 30 26 30 6 MIN. QNH PRESSURE IN HPA 1008.7 1006.2 1009.0 1006.9 1007.8 1004.8 1009.8 1012.4 1012.7 1016.6 1013.4 1014.9 1004.8 DAY 9 20 21 8 20 25 4 13 12 31 26 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 842.6 839.7 838.8 840.1 839.9 837.6 837.2 839.5 840.2 843.4 843.6 846.3 840.7 MAX. QFE PRESSURE IN HPA 852.1 845.7 844.8 845.0 845.8 842.3 840.8 845.3 845.4 847.5 849.6 851.6 852.1 DAY 2 12 18 11 28 16 18 20 30 26 30 6 MIN. QFE PRESSURE IN HPA 834.7 829.0 833.1 830.8 834.4 830.0 833.2 835.5 835.8 840.0 837.3 838.5 829.0 DAY 9 20 21 8 20 24 22 13 15 31 25 15 MEAN QNH PRESSURE IN HPA 1018.5 1015.2 1014.1 1015.7 1015.5 1012.8 1012.3 1015.0 1015.8 1019.4 1019.8 1022.8 1016.4 MAX. QNH PRESSURE IN HPA 1029.6 1022.2 1021.1 1021.4 1022.3 1018.2 1016.5 1021.7 1021.8 1024.3 1026.7 1029.1 1029.6 DAY 2 12 18 11 28 16 18 20 30 26 30 6 MIN. QNH PRESSURE IN HPA 1009.4 1002.7 1007.5 1004.8 1009.0 1003.9 1007.6 1010.3 1010.6 1015.5 1012.4 1013.8 1002.7 DAY 9 20 21 8 20 24 22 13 15 31 25 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 843.1 840.0 838.9 840.3 839.8 837.3 837.0 839.2 840.2 843.5 844.3 846.9 840.9 MAX. QFE PRESSURE IN HPA 852.1 846.1 845.5 845.0 845.6 842.8 840.4 845.8 845.3 847.8 850.2 851.8 852.1 DAY 2 12 18 11 28 16 18 18 30 26 30 5 MIN. QFE PRESSURE IN HPA 835.3 828.6 833.4 833.6 834.1 829.2 832.2 834.6 835.6 839.7 838.3 839.0 828.6 DAY 9 20 21 13 19 24 22 13 15 31 25 15 MEAN QNH PRESSURE IN HPA 1019.1 1015.5 1014.3 1015.9 1015.3 1012.4 1012.1 1014.7 1015.8 1019.6 1020.5 1023.5 1016.6 MAX. QNH PRESSURE IN HPA 1029.6 1022.6 1021.9 1021.4 1022.1 1018.8 1016.0 1022.3 1021.7 1024.6 1027.4 1029.3 1029.6 DAY 2 12 18 11 28 16 18 18 30 26 30 5 MIN. QNH PRESSURE IN HPA 1010.1 1002.2 1007.8 1008.1 1008.7 1002.9 1006.4 1009.2 1010.4 1015.2 1013.6 1014.4 1002.2 DAY 9 20 21 13 19 24 22 13 15 31 25 15 MEAN QFF PRESSURE IN HPA 1022.4 1016.0 1013.9 1011.9 1007.2 1001.3 1000.9 1001.8 1006.9 1014.0 1020.6 1025.6 1011.9 MAX. QFF PRESSURE IN HPA 1035.8 1024.4 1026.7 1020.8 1011.8 1011.8 1006.7 1010.4 1015.2 1025.3 1033.7 1037.0 1037.0 DAY 2 12 18 10 9 16 27 18 27 26 30 5 MIN. QFF PRESSURE IN HPA 1012.3 1000.9 1005.7 1002.9 997.9 990.0 992.9 996.2 999.6 1009.1 1008.9 1013.9 990.0 DAY 9 20 21 13 19 24 22 13 15 17 25 15 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.1 1.2 7.0 15.9 20.8 23.8 26.6 26.4 21.8 12.9 6.1 2.7 13.8 MINIMUN AIR TEMPERATURE (C) -5.0 -4.8 -0.4 7.2 11.0 13.4 16.8 16.7 12.2 5.7 0.8 -0.9 6.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 1 0 0 0 0 3 DAYS WITH MINIMUM TEMP. <=-4 19 16 7 0 0 0 0 0 0 0 0 4 46 DAYS WITH FREEZING MIN.<= 0 27 27 18 0 0 0 0 0 0 0 13 23 108 TEMPERATURE RECORDS LOWEST(C) -15.6 -12.0 -7.0 2.6 7.0 6.4 12.8 13.2 8.2 2.6 -2.6 -5.6 -15.6 DAY 18 9 16 1 10 13 23 8 27 30 11 28 MAXIMUM AIR TEMPERATURE (C) 4.2 5.7 12.0 21.2 26.1 29.6 32.4 32.2 28.1 18.0 10.3 6.0 18.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 15 26 26 7 0 0 0 75 DAYS WITH MAXIMUM TEMP. <= 0 8 2 0 0 0 0 0 0 0 0 0 0 10 TEMPERATURE RECORDS HIGHEST(C) 16.4 13.8 17.4 24.8 31.8 37.4 37.8 37.6 34.2 24.6 17.2 10.0 37.8 DAY 2 24 29 16 26 22 1 3 8 11 3 31 DIF. BETWEEN (MAX.-MIN.) (C) 9.2 10.5 12.4 14.0 15.1 16.2 15.6 15.5 15.9 12.3 9.5 6.9 12.7 MEAN DAILY TEMP. (MDT) (C) -0.4 0.5 5.8 14.2 18.5 21.5 24.6 24.5 20.1 11.8 5.5 2.6 12.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.5 53.6 112.8 108.7 15.4 0.0 0.0 0.0 293.0 HEATING DEG. DAYS(BASE 18 0C) 570.1 508.7 378.6 114.6 15.4 15.5 0.0 0.0 5.2 190.9 374.0 478.5 2651.5 DEWPOINT (MEAN C) -6.7 -8.5 -5.0 -0.0 1.5 2.6 5.3 5.9 5.4 2.5 -0.7 -2.1 0.0 MIXING RATIO (G/KG) 2.88 2.53 3.35 4.88 5.29 5.72 6.95 7.29 6.99 5.53 4.41 3.98 4.98 VAPOUR PRESSURE (HPA) 3.88 3.41 4.50 6.54 7.07 7.65 9.27 9.73 9.34 7.45 5.95 5.37 6.68 SATURATION DEF. (HPA) 2.61 3.64 6.15 12.24 18.68 23.92 27.16 26.34 18.24 8.23 3.75 2.16 12.76 RELATIVE HUMIDITY (MEAN %) 65 52 48 39 31 29 29 32 40 54 64 73 46 RELATIVE HUMIDITY (MAX. %) 81 70 73 63 54 50 49 53 65 78 84 89 67 RELATIVE HUMIDITY (MIN. %) 51 38 30 24 19 18 18 19 23 37 48 59 32 RELATIVE HUMIDITY (MEAN% 03UTC) 78 69 71 63 54 50 49 52 64 77 83 86 66 RELATIVE HUMIDITY (MEAN% 09UTC) 56 44 41 29 23 21 21 22 29 42 52 63 37 RELATIVE HUMIDITY (MEAN% 15UTC) 66 47 38 32 25 27 27 28 37 53 64 77 43 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 38.3 13.4 43.3 24.6 0.2 0.0 0.4 0.0 15.4 19.5 43.1 49.7 247.9 DAYS WITH PRECIPITATION >=10 1 1 2 1 0 0 0 0 0 0 2 2 9 DAYS WITH PRECIPITATION >= 5 4 1 3 2 0 0 0 0 2 2 4 4 22 DAYS WITH PRECIPITATION >= 1 7 3 5 3 0 0 0 0 4 5 7 7 41 DAYS WITH PRECIPITATION 13 6 7 8 3 3 3 1 5 9 9 10 77 GREATEST DAILY PRECIPITATION 10.0 10.0 22.0 11.0 0.1 0.0 0.4 0.0 6.0 7.0 15.0 13.3 22.0 DAY 6 14 24 20 5 ** 7 ** 4 18 2 24 DAY WITH THUNDER STORM 0 0 0 5 3 1 1 0 3 3 1 0 17 DAYS WITH SNOW OR SLEET 7 3 1 0 0 0 0 0 0 0 3 9 23 DAYS WITH DUST 0 0 1 2 7 1 0 0 0 0 0 0 11 WIND DIRECTION (PREVAILING) 315 315 270 270 270 45 45 45 135 135 360 270 315 PREVAILING WIND SPEED(KNOTS) 7.6 7.9 11.3 8.6 9.3 14.1 12.4 11.4 8.3 8.2 12.0 6.9 7.7 PREVAILING WIND PERCENT 18.1 29.7 27.7 21.3 23.2 20.7 27.1 18.7 14.7 17.4 16.7 16.1 14.0 CALMS PERCENT OF WIND 27.7 17.2 11.6 16.7 21.3 22.7 18.1 25.2 26.7 29.7 30.7 31.6 23.3 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 263 300 259 254 268 41 44 56 50 34 11 296 350 VECTOR WIND MAGNITUDE(KNOTS) 1.4 3.5 4.0 3.8 3.2 4.7 5.4 3.8 3.0 2.3 2.3 1.9 1.4 WIND STEADINESES (MEAN %) 23.7 50.7 44.4 51.4 48.5 56.0 64.3 53.5 42.3 35.4 38.3 35.8 19.7 WIND SPEED (MEAN KNOTS) 5.9 6.9 9.0 7.4 6.6 8.4 8.4 7.1 7.1 6.5 6.0 5.3 7.1 FASTEST WIND DIRECTION 240 20 270 240 250 20 30 20 10 10 20 300 20 FASTEST WIND SPEED (KNOTS) 21 31 29 27 29 33 25 27 29 25 21 21 33 DAY 22 7 13 10 7 12 12 7 10 1 6 16 DAYS WITH SKY CLEAR (0-2)/8 15 15 17 9 24 28 28 29 27 16 13 8 229 DAYS WITH P.CLOUDY (3-6)/8 5 9 10 15 6 2 3 2 2 11 14 15 94 DAYS WITH CLOUDY (7-8)/8 11 5 4 6 1 0 0 0 1 4 3 8 43 DAYS WITH VISIBILITY =< 2 KM 3 2 0 1 2 0 0 0 0 0 2 10 20 DURATION OF SUNSHINE HOURS 162.6 224.0 257.6 224.9 315.3 353.3 350.5 335.8 274.0 228.6 168.3 131.7 3026.6 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.0 841.9 840.3 841.6 839.9 839.0 840.1 840.5 841.4 845.2 846.4 843.8 841.8 MAX. QFE PRESSURE IN HPA 848.5 849.1 847.6 847.3 844.3 844.3 847.3 845.4 848.9 849.5 854.8 850.7 854.8 DAY-HOUR 30-15 29- 6 27- 6 2- 6 5- 6 13- 6 30- 6 23- 6 29- 9 16- 6 17- 6 4- 6 MIN. QFE PRESSURE IN HPA 828.8 831.2 831.3 836.2 833.8 833.2 832.1 832.7 835.2 840.5 840.6 835.9 828.8 DAY-HOUR 21-12 7- 3 24-12 10- 3 26-15 23-15 10-15 30-15 1-12 23-12 22-12 15- 9 MEAN QNH PRESSURE IN HPA 1016.7 1017.7 1015.9 1017.4 1015.4 1014.4 1015.6 1016.1 1017.2 1021.6 1023.0 1019.9 1017.6 MAX. QNH PRESSURE IN HPA 1025.4 1026.1 1024.4 1024.0 1020.5 1020.5 1024.0 1021.8 1025.9 1026.6 1032.8 1028.0 1032.8 DAY-HOUR 30-15 29- 6 27- 6 2- 6 5- 6 13- 6 30- 6 23- 6 29- 9 16- 6 17- 6 4- 6 MIN. QNH PRESSURE IN HPA 1002.5 1005.3 1005.4 1011.1 1008.3 1007.6 1006.3 1007.0 1009.9 1016.1 1016.2 1010.8 1002.5 DAY-HOUR 21-12 7- 3 24-12 10- 3 26-15 23-15 10-15 30-15 1-12 23-12 22-12 15- 9 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 841.2 841.8 840.7 842.1 840.6 840.0 840.8 841.3 842.1 845.6 846.4 843.5 842.2 MAX. QFE PRESSURE IN HPA 848.2 848.3 847.1 846.5 843.8 843.7 846.9 844.5 846.1 848.9 853.9 849.2 853.9 DAY 31 11 27 2 5 13 30 23 29 16 17 4 MIN. QFE PRESSURE IN HPA 831.2 831.2 834.5 836.2 837.1 835.6 834.6 835.2 836.2 842.7 841.6 836.5 831.2 DAY 21 7 2 10 20 26 11 31 1 23 22 15 MEAN QNH PRESSURE IN HPA 1016.9 1017.6 1016.4 1017.9 1016.3 1015.5 1016.5 1017.1 1017.9 1022.0 1023.0 1019.6 1018.1 MAX. QNH PRESSURE IN HPA 1025.1 1025.2 1023.8 1023.1 1020.0 1019.8 1023.6 1020.8 1022.6 1025.9 1031.7 1026.3 1031.7 DAY 31 11 27 2 5 13 30 23 29 16 17 4 MIN. QNH PRESSURE IN HPA 1005.3 1005.3 1009.1 1011.1 1012.2 1010.4 1009.2 1009.9 1011.1 1018.7 1017.4 1011.4 1005.3 DAY 21 7 2 10 20 26 11 31 1 23 22 15 MEAN QFF PRESSURE IN HPA 1021.4 1021.5 1016.3 1012.3 1007.6 1005.1 1004.4 1005.0 1008.8 1018.3 1023.5 1022.0 1013.8 MAX. QFF PRESSURE IN HPA 1032.6 1032.2 1027.8 1020.8 1012.7 1016.1 1012.5 1011.4 1015.6 1024.9 1034.1 1029.4 1034.1 DAY 31 11 27 2 7 13 30 8 30 16 17 29 MIN. QFF PRESSURE IN HPA 1006.1 1007.6 1006.6 1004.3 1001.8 996.6 994.3 997.9 999.7 1012.2 1017.7 1013.9 994.3 DAY 21 7 23 10 26 24 11 31 1 1 6 15 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.1 842.7 841.5 842.7 840.9 840.2 841.2 841.9 842.8 846.3 847.3 844.4 842.8 MAX. QFE PRESSURE IN HPA 848.4 849.1 847.6 847.3 844.3 844.3 847.3 845.4 847.3 849.5 854.8 850.7 854.8 DAY 31 29 27 2 5 13 30 23 29 16 17 4 MIN. QFE PRESSURE IN HPA 832.0 832.7 834.5 837.5 837.6 835.5 835.0 836.5 837.1 843.2 842.6 836.8 832.0 DAY 21 7 24 10 20 26 11 31 1 23 22 15 MEAN QNH PRESSURE IN HPA 1018.0 1018.7 1017.3 1018.7 1016.6 1015.8 1016.9 1017.7 1018.8 1022.9 1024.1 1020.6 1018.8 MAX. QNH PRESSURE IN HPA 1025.3 1026.1 1024.4 1024.0 1020.5 1020.5 1024.0 1021.8 1024.0 1026.6 1032.8 1028.0 1032.8 DAY 31 29 27 2 5 13 30 23 29 16 17 4 MIN. QNH PRESSURE IN HPA 1006.2 1007.0 1009.1 1012.6 1012.7 1010.3 1009.7 1011.4 1012.2 1019.3 1018.6 1011.8 1006.2 DAY 21 7 24 10 20 26 11 31 1 23 22 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.2 842.3 840.8 841.8 840.2 839.4 840.5 840.9 841.8 845.3 846.6 843.9 842.1 MAX. QFE PRESSURE IN HPA 848.3 848.5 846.5 846.4 843.7 843.7 846.4 844.7 848.9 849.0 853.6 849.7 853.6 DAY 30 29 27 2 5 13 30 23 29 16 17 4 MIN. QFE PRESSURE IN HPA 830.5 834.4 833.7 837.5 836.0 834.6 834.5 835.7 836.4 842.0 841.8 835.9 830.5 DAY 21 7 24 10 26 26 11 31 1 23 22 15 MEAN QNH PRESSURE IN HPA 1016.9 1018.2 1016.4 1017.7 1015.8 1014.8 1016.1 1016.6 1017.6 1021.7 1023.2 1020.0 1017.9 MAX. QNH PRESSURE IN HPA 1025.2 1025.4 1023.1 1023.0 1019.8 1019.8 1023.0 1021.0 1025.9 1026.0 1031.4 1026.8 1031.4 DAY 30 29 27 2 5 13 30 23 29 16 17 4 MIN. QNH PRESSURE IN HPA 1004.4 1009.0 1008.2 1012.6 1010.9 1009.2 1009.1 1010.5 1011.3 1017.9 1017.6 1010.8 1004.4 DAY 21 7 24 10 26 26 11 31 1 23 22 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.1 841.2 839.3 840.7 839.0 837.9 839.2 839.4 840.2 844.3 845.7 843.3 840.9 MAX. QFE PRESSURE IN HPA 847.5 847.4 844.4 844.6 842.3 843.0 845.7 842.4 848.6 848.0 852.0 849.0 852.0 DAY 30 10 3 4 5 13 30 23 29 16 17 4 MIN. QFE PRESSURE IN HPA 828.8 834.2 831.3 837.5 834.3 833.8 832.9 834.1 835.2 840.5 840.6 836.2 828.8 DAY 21 6 24 10 26 24 11 30 1 23 22 15 MEAN QNH PRESSURE IN HPA 1015.7 1016.9 1014.7 1016.4 1014.4 1013.1 1014.6 1014.8 1015.8 1020.5 1022.1 1019.4 1016.5 MAX. QNH PRESSURE IN HPA 1024.3 1024.2 1020.7 1020.9 1018.2 1019.0 1022.2 1018.3 1025.6 1024.9 1029.5 1026.0 1029.5 DAY 30 10 3 4 5 13 30 23 29 16 17 4 MIN. QNH PRESSURE IN HPA 1002.5 1008.8 1005.4 1012.6 1008.9 1008.3 1007.3 1008.7 1009.9 1016.1 1016.2 1011.1 1002.5 DAY 21 6 24 10 26 24 11 30 1 23 22 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 840.6 841.5 839.4 840.8 838.7 837.6 838.8 838.9 840.2 844.7 846.2 843.9 840.9 MAX. QFE PRESSURE IN HPA 848.5 848.0 844.7 844.9 842.5 842.9 845.4 842.2 847.2 848.9 852.4 849.6 852.4 DAY 30 10 3 4 6 13 30 23 29 15 16 4 MIN. QFE PRESSURE IN HPA 831.0 833.2 831.3 837.5 833.8 833.2 832.1 832.7 835.8 840.7 841.2 837.7 831.0 DAY 21 6 24 21 26 23 10 30 1 23 21 15 MEAN QNH PRESSURE IN HPA 1016.3 1017.3 1014.8 1016.5 1014.1 1012.7 1014.2 1014.3 1015.8 1021.0 1022.8 1020.1 1016.6 MAX. QNH PRESSURE IN HPA 1025.4 1024.9 1021.0 1021.2 1018.5 1018.9 1021.8 1018.1 1023.9 1025.9 1030.0 1026.7 1030.0 DAY 30 10 3 4 6 13 30 23 29 15 16 4 MIN. QNH PRESSURE IN HPA 1005.0 1007.6 1005.4 1012.6 1008.3 1007.6 1006.3 1007.0 1010.6 1016.4 1016.9 1012.9 1005.0 DAY 21 6 24 21 26 23 10 30 1 23 21 15 MEAN QFF PRESSURE IN HPA 1020.7 1021.2 1014.5 1010.7 1005.2 1002.2 1002.0 1002.1 1006.7 1017.3 1023.3 1022.4 1012.4 MAX. QFF PRESSURE IN HPA 1032.1 1032.4 1024.6 1016.8 1011.1 1013.7 1010.4 1009.2 1018.0 1025.5 1032.8 1028.6 1032.8 DAY 30 10 3 2 10 13 30 8 29 15 16 29 MIN. QFF PRESSURE IN HPA 1006.1 1009.3 1001.9 1006.2 996.9 992.7 992.4 994.6 1000.7 1011.5 1016.3 1014.5 992.4 DAY 21 25 24 21 26 23 11 30 7 23 21 21 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.0 3.9 10.5 15.3 17.1 21.6 22.4 24.1 20.0 13.2 6.8 4.1 13.3 MINIMUN AIR TEMPERATURE (C) -3.9 -2.3 2.4 6.9 9.2 13.5 15.4 16.1 12.2 7.1 1.8 0.8 6.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 11 7 2 0 0 0 0 0 0 0 4 1 25 DAYS WITH FREEZING MIN.<= 0 29 23 7 0 0 0 0 0 0 1 7 16 83 TEMPERATURE RECORDS LOWEST(C) -10.6 -7.8 -4.2 3.0 4.6 9.0 12.6 10.6 7.0 0.0 -9.6 -6.6 -10.6 DAY 28 23 11 10 19 2 4 13 21 27 20 22 MAXIMUM AIR TEMPERATURE (C) 5.3 8.3 16.1 21.6 25.5 29.3 30.0 32.4 27.9 20.8 13.1 9.1 19.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 4 14 16 26 9 0 0 0 69 DAYS WITH MAXIMUM TEMP. <= 0 4 0 0 0 0 0 0 0 0 0 1 0 5 TEMPERATURE RECORDS HIGHEST(C) 11.0 16.6 23.2 26.0 31.6 37.2 36.4 37.6 31.6 28.8 23.2 15.4 37.6 DAY 10 28 31 5 15 26 9 2 3 6 6 29 DIF. BETWEEN (MAX.-MIN.) (C) 9.2 10.6 13.7 14.7 16.3 15.8 14.6 16.3 15.7 13.7 11.3 8.3 13.3 MEAN DAILY TEMP. (MDT) (C) 0.7 3.0 9.2 14.2 17.3 21.4 22.7 24.2 20.1 13.9 7.4 4.9 13.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 3.0 52.7 61.4 106.5 8.6 0.0 0.0 0.0 232.3 HEATING DEG. DAYS(BASE 18 0C) 536.0 421.1 271.7 113.4 48.7 14.0 0.0 0.0 12.9 127.1 316.9 404.9 2266.7 DEWPOINT (MEAN C) -6.2 -5.7 -3.2 -1.0 0.6 3.2 8.4 6.3 3.3 1.6 -1.6 -1.6 0.3 MIXING RATIO (G/KG) 2.91 3.06 3.76 4.45 5.03 6.07 8.39 7.50 5.96 5.38 4.17 4.22 5.07 VAPOUR PRESSURE (HPA) 3.93 4.12 5.05 5.97 6.73 8.10 11.16 10.02 7.99 7.24 5.62 5.69 6.80 SATURATION DEF. (HPA) 3.00 4.27 8.59 12.37 14.14 19.63 17.21 21.78 16.69 8.78 5.00 2.78 11.19 RELATIVE HUMIDITY (MEAN %) 62 55 44 38 39 35 45 37 38 52 60 71 48 RELATIVE HUMIDITY (MAX. %) 78 79 70 63 64 54 65 57 60 75 81 85 69 RELATIVE HUMIDITY (MIN. %) 47 36 29 21 20 21 25 19 20 29 39 52 30 RELATIVE HUMIDITY (MEAN% 03UTC) 77 77 69 59 57 47 61 52 54 68 74 79 65 RELATIVE HUMIDITY (MEAN% 09UTC) 51 42 34 26 25 23 28 22 23 35 43 60 34 RELATIVE HUMIDITY (MEAN% 15UTC) 62 50 36 30 26 28 38 28 29 45 54 67 41 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 2.9 7.0 44.0 15.8 9.5 0.8 3.6 2.0 2.1 27.5 45.1 42.3 202.6 DAYS WITH PRECIPITATION >=10 0 0 3 0 0 0 0 0 0 0 2 1 6 DAYS WITH PRECIPITATION >= 5 0 0 3 1 1 0 0 0 0 3 3 3 14 DAYS WITH PRECIPITATION >= 1 1 2 6 5 1 0 1 1 1 7 6 8 39 DAYS WITH PRECIPITATION 8 7 7 10 6 1 3 2 2 12 8 9 75 GREATEST DAILY PRECIPITATION 2.0 4.0 14.0 8.0 9.0 0.8 3.1 2.0 2.0 6.2 17.0 17.2 17.2 DAY 4 11 10 8 2 16 21 10 21 1 18 1 DAY WITH THUNDER STORM 0 0 2 4 6 1 4 4 3 9 1 1 35 DAYS WITH SNOW OR SLEET 7 4 2 0 0 0 0 0 0 0 2 4 19 DAYS WITH DUST 0 1 0 0 0 0 1 0 0 0 0 0 2 WIND DIRECTION (PREVAILING) 270 270 270 270 315 360 360 360 315 360 315 135 360 PREVAILING WIND SPEED(KNOTS) 8.2 10.2 10.6 9.0 6.0 13.6 12.6 13.3 5.6 9.1 6.7 8.8 11.6 PREVAILING WIND PERCENT 18.7 30.0 20.0 21.8 13.7 26.7 29.4 21.0 13.8 14.9 14.6 14.1 14.9 CALMS PERCENT OF WIND 23.9 16.4 21.9 24.6 27.0 23.3 23.0 31.5 33.8 33.5 40.4 44.8 29.7 NO. OF WIND OBSERVATION 155 140 155 179 248 240 248 248 240 248 240 248 2589 VECTOR WIND DIRECTION (MEAN) 325 257 289 277 309 22 24 26 4 335 317 206 336 VECTOR WIND MAGNITUDE(KNOTS) 3.3 4.1 2.7 2.6 1.2 4.2 5.6 3.4 1.9 1.9 1.2 1.1 1.8 WIND STEADINESES (MEAN %) 47.8 52.6 33.7 43.3 18.2 53.2 70.0 52.3 33.9 33.9 27.9 25.0 27.7 WIND SPEED (MEAN KNOTS) 6.9 7.8 8.0 6.0 6.6 7.9 8.0 6.5 5.6 5.6 4.3 4.4 6.5 FASTEST WIND DIRECTION 10 210 20 210 270 10 30 30 20 20 10 210 10 FASTEST WIND SPEED (KNOTS) 29 33 31 27 27 39 29 31 33 27 37 29 39 DAY 26 21 10 15 8 11 15 24 18 1 18 20 DAYS WITH SKY CLEAR (0-2)/8 14 14 14 12 20 27 27 29 26 20 11 7 221 DAYS WITH P.CLOUDY (3-6)/8 12 10 13 14 9 3 4 2 4 9 12 15 107 DAYS WITH CLOUDY (7-8)/8 5 4 4 4 2 0 0 0 0 2 7 9 37 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 0 0 0 1 10 11 DURATION OF SUNSHINE HOURS 181.5 185.5 232.1 250.4 312.1 364.8 346.9 343.0 309.2 246.3 162.3 125.1 3059.2 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 844.4 841.6 841.3 841.1 839.6 838.5 838.9 841.0 842.7 844.8 844.3 844.6 841.9 MAX. QFE PRESSURE IN HPA 847.6 850.5 850.3 849.7 844.5 844.9 845.0 846.3 848.9 852.9 851.4 850.6 852.9 DAY-HOUR 9- 6 9- 6 1- 6 2- 6 18- 6 2- 6 28- 6 5- 6 22- 6 10- 6 2- 6 9-18 MIN. QFE PRESSURE IN HPA 839.6 826.0 830.2 834.0 832.0 830.4 831.8 835.3 836.3 838.8 830.7 836.7 826.0 DAY-HOUR 19-12 21- 9 25- 9 12-12 29-15 17-15 9-15 29-15 5-15 6-12 18-12 20-12 MEAN QNH PRESSURE IN HPA 1020.7 1017.4 1017.1 1016.8 1015.0 1013.8 1014.3 1016.7 1018.6 1021.1 1020.5 1020.9 1017.8 MAX. QNH PRESSURE IN HPA 1024.4 1027.8 1027.5 1026.8 1020.8 1021.2 1021.4 1022.9 1025.9 1030.6 1028.8 1027.9 1030.6 DAY-HOUR 9- 6 9- 6 1- 6 2- 6 18- 6 2- 6 28- 6 5- 6 22- 6 10- 6 2- 6 9-18 MIN. QNH PRESSURE IN HPA 1015.1 999.2 1004.1 1008.5 1006.2 1004.3 1006.0 1010.1 1011.2 1014.1 1004.7 1011.7 999.2 DAY-HOUR 19-12 21- 9 25- 9 12-12 29-15 17-15 9-15 29-15 5-15 6-12 18-12 20-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1006.7 1002.5 1002.4 1003.9 1008.5 1015.3 1019.0 1021.3 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1016.2 1013.0 1008.5 1012.7 1018.8 1026.8 1033.4 1031.6 ****** DAY-HOUR **-** **-** **-** **-** 19- 3 2- 3 29- 3 12- 3 22- 3 27- 3 20- 6 22- 6 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 994.1 991.5 990.4 996.6 999.3 1004.9 1003.5 1010.0 ****** DAY-HOUR **-** **-** **-** **-** 29-18 17-12 9-15 23-12 5-12 6-12 17-12 20- 9 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 839.8 838.7 839.1 841.2 842.7 844.9 844.1 844.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 843.8 844.2 843.0 845.1 847.4 851.3 849.4 849.4 ****** DAY ** ** ** ** 23 2 29 5 22 10 2 10 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 833.4 832.8 834.5 836.4 838.3 841.3 832.9 837.4 ****** DAY ** ** ** ** 30 18 18 27 1 19 18 5 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1015.3 1014.1 1014.4 1016.9 1018.7 1021.2 1020.3 1021.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1020.0 1020.4 1019.0 1021.5 1024.2 1028.7 1026.5 1026.5 ****** DAY ** ** ** ** 23 2 29 5 22 10 2 10 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1007.8 1007.1 1009.1 1011.3 1013.6 1017.0 1007.3 1012.5 ****** DAY ** ** ** ** 30 18 18 27 1 19 18 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1006.9 1002.7 1002.1 1003.7 1008.1 1014.8 1018.3 1020.9 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1014.4 1011.9 1006.4 1011.8 1017.1 1024.9 1032.3 1028.1 ****** DAY ** ** ** ** 19 12 16 12 22 28 20 22 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 996.1 994.1 994.3 997.9 1001.5 1006.6 1003.5 1013.6 ****** DAY ** ** ** ** 30 18 10 24 5 1 18 20 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 844.2 841.5 841.6 841.8 840.3 839.4 839.8 842.0 843.3 845.1 844.4 844.6 842.3 MAX. QFE PRESSURE IN HPA 846.6 849.4 848.7 849.2 844.3 844.7 844.4 845.8 847.8 852.0 850.1 849.3 852.0 DAY 9 10 1 2 14 2 29 5 22 10 2 9 MIN. QFE PRESSURE IN HPA 840.3 828.0 830.4 836.4 833.4 833.6 834.8 837.1 839.4 841.4 832.5 837.1 828.0 DAY 19 21 25 26 8 18 18 27 5 31 18 5 MEAN QNH PRESSURE IN HPA 1020.4 1017.3 1017.4 1017.6 1015.9 1014.9 1015.3 1017.8 1019.4 1021.5 1020.6 1020.9 1018.3 MAX. QNH PRESSURE IN HPA 1023.2 1026.5 1025.7 1026.3 1020.5 1021.0 1020.7 1022.3 1024.6 1029.5 1027.3 1026.4 1029.5 DAY 9 10 1 2 14 2 29 5 22 10 2 9 MIN. QNH PRESSURE IN HPA 1015.9 1001.5 1004.3 1011.3 1007.8 1008.1 1009.5 1012.2 1014.8 1017.2 1006.8 1012.2 1001.5 DAY 19 21 25 26 8 18 18 27 5 31 18 5 MEAN QFF PRESSURE IN HPA 1024.4 1019.3 1015.2 1011.9 1008.1 1004.0 1004.3 1005.8 1010.2 1016.6 1019.9 1021.9 1013.5 MAX. QFF PRESSURE IN HPA 1032.2 1029.9 1027.7 1021.6 1016.2 1013.0 1008.5 1012.7 1018.8 1026.8 1033.2 1030.1 1033.2 DAY 28 12 11 2 19 2 29 12 22 27 20 22 MIN. QFF PRESSURE IN HPA 1017.4 999.7 1000.6 1003.4 998.0 995.9 995.3 1000.2 1003.3 1008.6 1003.8 1014.2 995.3 DAY 5 21 25 26 30 18 9 24 5 1 18 5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 845.1 842.5 842.5 842.2 840.6 839.7 840.0 842.3 843.9 845.9 845.2 845.6 843.0 MAX. QFE PRESSURE IN HPA 847.6 850.5 850.3 849.7 844.5 844.9 845.0 846.3 848.9 852.9 851.4 850.3 852.9 DAY 9 9 1 2 18 2 28 5 22 10 2 9 MIN. QFE PRESSURE IN HPA 840.6 827.7 831.4 836.4 834.2 833.9 835.0 837.4 839.7 842.4 832.8 837.3 827.7 DAY 19 21 25 26 9 17 18 27 5 22 18 5 MEAN QNH PRESSURE IN HPA 1021.5 1018.4 1018.5 1018.1 1016.2 1015.2 1015.5 1018.2 1020.1 1022.4 1021.7 1022.0 1019.0 MAX. QNH PRESSURE IN HPA 1024.4 1027.8 1027.5 1026.8 1020.8 1021.2 1021.4 1022.9 1025.9 1030.6 1028.8 1027.5 1030.6 DAY 9 9 1 2 18 2 28 5 22 10 2 9 MIN. QNH PRESSURE IN HPA 1016.2 1001.2 1005.5 1011.3 1008.8 1008.4 1009.7 1012.5 1015.2 1018.3 1007.1 1012.4 1001.2 DAY 19 21 25 26 9 17 18 27 5 22 18 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1007.6 1003.9 1003.8 1005.5 1009.8 1016.7 1020.5 1023.1 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1015.7 1011.9 1007.9 1012.0 1018.6 1025.8 1033.4 1031.6 ****** DAY ** ** ** ** 19 12 16 11 22 28 20 22 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 997.5 995.6 995.7 999.8 1002.6 1011.5 1004.4 1014.3 ****** DAY ** ** ** ** 30 18 9 27 5 6 18 20 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 844.7 842.0 841.8 841.3 839.8 838.9 839.2 841.4 843.0 844.9 844.3 844.6 842.1 MAX. QFE PRESSURE IN HPA 847.5 850.5 849.7 849.0 843.4 844.7 844.2 845.5 847.6 852.0 850.0 849.5 852.0 DAY 9 9 1 1 18 2 29 5 22 10 2 9 MIN. QFE PRESSURE IN HPA 840.0 826.0 830.2 834.5 833.9 832.3 834.5 836.8 838.7 840.6 831.7 837.0 826.0 DAY 19 21 25 26 9 17 9 27 5 6 18 20 MEAN QNH PRESSURE IN HPA 1021.0 1017.9 1017.6 1017.1 1015.3 1014.2 1014.6 1017.2 1019.0 1021.2 1020.5 1020.9 1018.0 MAX. QNH PRESSURE IN HPA 1024.3 1027.8 1026.8 1026.0 1019.5 1021.0 1020.4 1021.9 1024.4 1029.5 1027.2 1026.6 1029.5 DAY 9 9 1 1 18 2 29 5 22 10 2 9 MIN. QNH PRESSURE IN HPA 1015.5 999.2 1004.1 1009.1 1008.4 1006.5 1009.1 1011.8 1014.0 1016.2 1005.9 1012.0 999.2 DAY 19 21 25 26 9 17 9 27 5 6 18 20 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1006.7 1002.6 1002.2 1003.9 1008.3 1014.7 1018.5 1020.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1013.8 1011.5 1006.9 1011.4 1016.5 1023.8 1031.2 1028.1 ****** DAY ** ** ** ** 18 12 29 11 19 27 20 22 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 998.0 993.2 994.6 997.7 1002.1 1007.6 1005.4 1010.0 ****** DAY ** ** ** ** 29 6 10 30 5 6 18 20 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 843.9 841.0 840.3 840.1 838.6 837.5 837.9 839.9 841.5 843.7 843.3 843.8 840.9 MAX. QFE PRESSURE IN HPA 846.5 849.8 848.0 847.9 842.8 842.9 842.5 844.2 846.2 850.4 848.5 849.1 850.4 DAY 9 9 1 1 18 2 29 5 19 10 2 9 MIN. QFE PRESSURE IN HPA 839.6 827.8 830.8 834.0 832.6 830.7 832.5 835.4 837.0 838.8 830.7 836.7 827.8 DAY 19 21 25 12 29 17 9 30 5 6 18 20 MEAN QNH PRESSURE IN HPA 1020.0 1016.7 1015.8 1015.6 1013.9 1012.6 1013.0 1015.4 1017.3 1019.9 1019.3 1019.9 1016.6 MAX. QNH PRESSURE IN HPA 1023.1 1027.0 1024.9 1024.7 1018.8 1018.9 1018.5 1020.4 1022.8 1027.7 1025.4 1026.1 1027.7 DAY 9 9 1 1 18 2 29 5 19 10 2 9 MIN. QNH PRESSURE IN HPA 1015.1 1001.3 1004.8 1008.5 1006.9 1004.7 1006.8 1010.2 1012.0 1014.1 1004.7 1011.7 1001.3 DAY 19 21 25 12 29 17 9 30 5 6 18 20 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1005.6 1001.2 1000.7 1002.3 1006.8 1013.7 1017.4 1019.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1013.2 1010.6 1004.8 1010.7 1016.2 1023.8 1031.0 1027.1 ****** DAY ** ** ** ** 18 12 29 11 19 27 20 22 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 995.7 991.5 991.1 996.6 999.3 1004.9 1003.5 1010.3 ****** DAY ** ** ** ** 29 17 9 23 5 6 17 20 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 844.3 841.2 840.4 840.1 838.2 837.0 837.7 839.6 841.4 844.1 843.9 844.4 841.0 MAX. QFE PRESSURE IN HPA 846.8 850.0 848.5 848.4 842.4 842.2 842.1 843.6 846.8 850.3 849.0 850.2 850.3 DAY 9 9 1 1 22 2 28 11 19 10 14 9 MIN. QFE PRESSURE IN HPA 840.4 829.4 831.1 834.9 832.0 830.4 831.8 835.3 836.3 839.8 832.7 837.9 829.4 DAY 19 21 25 12 29 17 9 29 5 6 18 5 MEAN QNH PRESSURE IN HPA 1020.5 1017.0 1016.0 1015.7 1013.4 1012.1 1012.8 1015.0 1017.2 1020.3 1020.1 1020.7 1016.7 MAX. QNH PRESSURE IN HPA 1023.5 1027.2 1025.4 1025.3 1018.3 1018.1 1018.0 1019.7 1023.5 1027.5 1026.0 1027.4 1027.5 DAY 9 9 1 1 22 2 28 11 19 10 14 9 MIN. QNH PRESSURE IN HPA 1016.0 1003.2 1005.2 1009.6 1006.2 1004.3 1006.0 1010.1 1011.2 1015.3 1007.0 1013.1 1003.2 DAY 19 21 25 12 29 17 9 29 5 6 18 5 MEAN QFF PRESSURE IN HPA 1024.5 1018.8 1013.7 1010.0 1005.5 1001.2 1001.6 1003.0 1007.9 1015.4 1019.5 1021.6 1011.9 MAX. QFF PRESSURE IN HPA 1031.2 1030.4 1026.2 1019.6 1013.8 1010.9 1006.6 1010.9 1018.1 1026.3 1032.6 1030.1 1032.6 DAY 26 10 11 1 18 12 21 11 19 27 20 22 MIN. QFF PRESSURE IN HPA 1018.6 1004.1 1001.8 1003.5 995.8 991.6 990.4 997.3 1000.2 1008.5 1004.9 1014.4 990.4 DAY 4 21 23 26 29 17 9 23 5 6 17 20 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 839.6 838.3 838.9 840.8 842.7 844.9 844.6 844.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 843.3 843.6 843.4 845.0 847.4 850.9 849.5 850.6 ****** DAY ** ** ** ** 15 1 27 11 19 9 14 9 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 832.6 831.6 833.4 836.4 838.0 840.4 833.6 839.0 ****** DAY ** ** ** ** 29 17 9 29 5 25 17 5 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1015.1 1013.6 1014.2 1016.5 1018.7 1021.3 1020.9 1021.2 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1019.4 1019.7 1019.5 1021.4 1024.2 1028.2 1026.6 1027.9 ****** DAY ** ** ** ** 15 1 27 11 19 9 14 9 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1006.9 1005.7 1007.8 1011.3 1013.2 1016.0 1008.1 1014.4 ****** DAY ** ** ** ** 29 17 9 29 5 25 17 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1006.4 1002.3 1002.4 1003.6 1008.4 1015.6 1019.8 1022.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1014.6 1012.7 1007.2 1012.6 1018.4 1026.1 1032.3 1031.1 ****** DAY ** ** ** ** 18 12 15 11 19 27 20 22 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 994.1 992.5 992.8 997.7 1000.6 1009.1 1004.6 1015.7 ****** DAY ** ** ** ** 29 17 9 29 5 6 17 29 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 840.0 838.9 839.2 841.1 842.9 845.1 844.5 844.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 844.2 844.4 842.8 844.8 847.1 851.0 849.5 849.8 ****** DAY ** ** ** ** 22 1 28 11 19 9 3 9 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 832.9 832.1 834.3 836.8 838.6 841.1 833.6 838.2 ****** DAY ** ** ** ** 29 17 9 26 5 25 17 4 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1015.5 1014.2 1014.6 1016.8 1018.9 1021.5 1020.7 1021.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1020.4 1020.7 1018.8 1021.1 1023.8 1028.4 1026.6 1027.0 ****** DAY ** ** ** ** 22 1 28 11 19 9 3 9 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1007.3 1006.3 1008.9 1011.8 1013.9 1016.8 1008.1 1013.4 ****** DAY ** ** ** ** 29 17 9 26 5 25 17 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1006.7 1002.5 1002.0 1003.4 1008.2 1015.0 1018.7 1020.8 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1014.1 1011.8 1006.1 1012.2 1017.7 1024.5 1031.9 1027.7 ****** DAY ** ** ** ** 18 12 15 11 19 27 19 21 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 994.4 992.4 993.2 997.0 1001.0 1008.8 1004.8 1013.6 ****** DAY ** ** ** ** 29 17 9 23 5 6 17 29 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.1 2.6 8.0 10.7 15.9 21.5 23.8 23.7 21.9 16.7 7.1 -2.0 12.4 MINIMUN AIR TEMPERATURE (C) -4.4 -1.7 1.8 6.0 8.7 13.3 16.5 16.0 12.9 9.8 2.7 -5.2 6.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 19 10 1 0 0 0 0 0 0 0 0 20 50 DAYS WITH FREEZING MIN.<= 0 25 20 10 1 0 0 0 0 0 0 5 27 88 TEMPERATURE RECORDS LOWEST(C) -12.0 -7.6 -4.2 -0.2 3.6 9.8 11.8 10.0 10.4 4.2 -3.0 -13.0 -13.0 DAY 26 19 11 13 5 7 1 31 30 23 30 15 MAXIMUM AIR TEMPERATURE (C) 3.8 8.0 15.2 16.3 23.0 29.1 31.5 32.1 30.9 24.8 13.1 2.3 19.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 4 12 23 22 24 1 0 0 86 DAYS WITH MAXIMUM TEMP. <= 0 5 1 0 0 0 0 0 0 0 0 0 9 15 TEMPERATURE RECORDS HIGHEST(C) 13.4 13.4 21.6 23.4 30.4 34.6 36.4 37.5 34.0 30.0 20.2 10.2 37.5 DAY 3 26 27 28 24 29 17 9 3 9 10 8 DIF. BETWEEN (MAX.-MIN.) (C) 8.2 9.7 13.4 10.3 14.3 15.8 15.0 16.1 18.0 15.0 10.4 7.5 12.8 MEAN DAILY TEMP. (MDT) (C) -0.3 3.2 8.5 11.1 15.8 21.2 24.0 24.0 21.9 17.3 7.9 -1.5 12.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 1.4 35.2 97.3 100.2 32.5 2.7 0.0 0.0 269.3 HEATING DEG. DAYS(BASE 18 0C) 568.1 415.7 294.7 206.0 87.4 1.9 0.0 0.0 0.0 49.3 302.8 603.5 2529.5 DEWPOINT (MEAN C) -6.5 -5.4 -4.8 1.5 2.1 1.8 7.5 6.7 1.2 0.6 -1.6 -5.3 -0.2 MIXING RATIO (G/KG) 2.93 3.10 3.41 5.27 5.47 5.39 7.98 7.78 5.19 4.90 4.21 3.23 4.91 VAPOUR PRESSURE (HPA) 3.95 4.18 4.58 7.05 7.32 7.21 10.63 10.36 6.98 6.60 5.69 4.35 6.57 SATURATION DEF. (HPA) 2.07 3.53 6.84 6.37 12.03 19.95 20.16 20.64 20.99 13.60 4.97 1.16 11.03 RELATIVE HUMIDITY (MEAN %) 69 58 46 58 46 31 39 40 29 39 59 79 49 RELATIVE HUMIDITY (MAX. %) 85 75 68 79 69 52 59 60 48 57 79 90 68 RELATIVE HUMIDITY (MIN. %) 51 39 25 37 25 16 21 21 13 18 39 65 31 RELATIVE HUMIDITY (MEAN% 03UTC) 75 70 61 71 64 45 55 56 45 54 71 84 63 RELATIVE HUMIDITY (MEAN% 09UTC) 56 45 34 46 31 18 23 25 15 22 44 70 36 RELATIVE HUMIDITY (MEAN% 15UTC) 68 52 33 50 34 24 33 34 21 33 53 82 43 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 40.5 22.7 25.8 48.6 31.6 0.0 0.3 0.1 0.0 4.2 30.1 68.8 272.7 DAYS WITH PRECIPITATION >=10 1 1 1 2 1 0 0 0 0 0 1 2 9 DAYS WITH PRECIPITATION >= 5 3 1 3 5 1 0 0 0 0 0 3 5 21 DAYS WITH PRECIPITATION >= 1 8 2 5 7 3 0 0 0 0 1 5 13 44 DAYS WITH PRECIPITATION 10 8 8 16 7 0 2 1 1 5 7 17 82 GREATEST DAILY PRECIPITATION 16.0 19.0 10.0 13.3 26.2 0.0 0.3 0.1 0.0 3.0 11.0 18.0 26.2 DAY 7 14 18 12 4 ** 22 1 ** 31 1 9 DAY WITH THUNDER STORM 1 0 1 3 4 0 4 1 1 1 0 1 17 DAYS WITH SNOW OR SLEET 7 4 0 2 0 0 0 0 0 0 4 12 29 DAYS WITH DUST 0 0 0 0 1 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 315 270 315 270 315 270 360 360 315 315 315 135 315 PREVAILING WIND SPEED(KNOTS) 9.6 9.0 6.3 9.8 7.0 9.2 11.3 13.1 6.0 6.1 6.5 8.1 7.3 PREVAILING WIND PERCENT 27.8 29.5 17.3 26.3 14.5 14.6 21.0 19.4 12.1 18.1 15.8 13.7 14.9 CALMS PERCENT OF WIND 29.8 12.1 25.8 19.6 34.3 32.9 31.9 33.9 46.3 43.1 40.4 48.8 33.4 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 301 296 282 268 299 344 40 27 344 297 326 19 324 VECTOR WIND MAGNITUDE(KNOTS) 2.5 5.2 2.1 3.5 1.6 2.2 4.1 3.7 0.5 1.1 2.0 0.6 1.7 WIND STEADINESES (MEAN %) 43.1 64.2 31.8 48.6 27.6 33.8 62.1 57.8 13.9 26.8 42.6 15.4 29.3 WIND SPEED (MEAN KNOTS) 5.8 8.1 6.6 7.2 5.8 6.5 6.6 6.4 3.6 4.1 4.7 3.9 5.8 FASTEST WIND DIRECTION 320 240 30 240 30 20 10 40 120 240 20 30 240 FASTEST WIND SPEED (KNOTS) 21 37 29 29 27 29 33 33 16 27 21 27 37 DAY 25 26 17 25 13 14 29 10 6 15 7 1 DAYS WITH SKY CLEAR (0-2)/8 10 14 12 2 18 25 27 31 27 17 16 6 205 DAYS WITH P.CLOUDY (3-6)/8 16 11 12 15 11 5 4 0 3 10 5 9 101 DAYS WITH CLOUDY (7-8)/8 5 3 7 13 2 0 0 0 0 4 9 16 59 DAYS WITH VISIBILITY =< 2 KM 3 0 0 0 0 0 0 0 0 0 1 10 14 DURATION OF SUNSHINE HOURS 162.8 197.2 218.9 162.3 307.7 340.9 351.6 360.7 312.2 228.9 184.7 99.6 2927.5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 843.1 843.3 841.3 839.0 840.1 839.3 839.9 839.0 843.3 845.0 846.1 842.5 841.8 MAX. QFE PRESSURE IN HPA 852.1 852.6 852.9 847.2 845.4 846.5 844.9 845.0 848.1 850.8 853.1 853.3 853.3 DAY-HOUR 27- 6 6- 6 11- 6 1- 6 17- 6 25- 6 29- 3 31- 6 21- 6 10- 6 18- 6 3- 6 MIN. QFE PRESSURE IN HPA 833.2 833.9 832.4 829.0 835.6 831.7 832.0 831.6 837.2 839.0 838.8 828.6 828.6 DAY-HOUR 8- 0 26-18 22-12 3- 9 19-15 20-12 24-15 7-15 10-15 21-12 12- 3 21-12 MEAN QNH PRESSURE IN HPA 1019.1 1019.4 1017.1 1014.4 1015.7 1014.8 1015.4 1014.4 1019.4 1021.4 1022.6 1018.4 1017.7 MAX. QNH PRESSURE IN HPA 1029.6 1030.2 1030.6 1023.9 1021.8 1023.1 1021.2 1021.4 1025.0 1028.1 1030.8 1031.0 1031.0 DAY-HOUR 27- 6 6- 6 11- 6 1- 6 17- 6 25- 6 29- 3 31- 6 21- 6 10- 6 18- 6 3- 6 MIN. QNH PRESSURE IN HPA 1007.6 1008.4 1006.7 1002.7 1010.4 1005.9 1006.2 1005.7 1012.3 1014.4 1014.1 1002.2 1002.2 DAY-HOUR 8- 0 26-18 22-12 3- 9 19-15 20-12 24-15 7-15 10-15 21-12 12- 3 21-12 MEAN QFF PRESSURE IN HPA 1023.1 1020.9 1014.8 1010.1 1008.0 1003.6 1002.7 1001.7 1008.1 1013.4 1020.9 1023.1 1012.5 MAX. QFF PRESSURE IN HPA 1037.8 1034.0 1032.2 1022.5 1017.8 1015.3 1011.5 1014.0 1015.8 1021.8 1031.1 1036.0 1037.8 DAY-HOUR 27- 6 18-18 11- 6 1- 3 17- 3 25- 3 29- 3 31- 3 30- 3 23- 3 17- 3 14-18 MIN. QFF PRESSURE IN HPA 1007.8 1005.3 1000.7 999.1 999.9 993.9 993.7 991.4 1000.4 1007.4 1006.7 1004.8 991.4 DAY-HOUR 8- 0 26-12 27- 0 3- 9 19-18 19-15 24-12 7-15 10-12 21- 9 12- 0 21-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 842.9 843.1 841.3 839.0 840.1 839.7 840.1 839.3 843.3 845.1 846.0 842.4 841.9 MAX. QFE PRESSURE IN HPA 850.2 852.0 851.4 845.2 844.5 845.3 844.4 844.1 846.9 849.8 852.5 851.7 852.5 DAY 27 6 11 1 17 25 30 31 22 11 18 3 MIN. QFE PRESSURE IN HPA 833.2 834.6 834.0 829.9 836.7 833.6 835.6 834.6 839.2 840.3 839.2 832.0 829.9 DAY 8 27 27 4 20 20 25 17 11 30 12 21 MEAN QNH PRESSURE IN HPA 1019.0 1019.1 1017.1 1014.4 1015.7 1015.1 1015.7 1014.7 1019.4 1021.5 1022.5 1018.4 1017.7 MAX. QNH PRESSURE IN HPA 1027.4 1029.5 1028.8 1021.6 1020.8 1021.7 1020.7 1020.3 1023.6 1027.0 1030.1 1029.2 1030.1 DAY 27 6 11 1 17 25 30 31 22 11 18 3 MIN. QNH PRESSURE IN HPA 1007.6 1009.2 1008.5 1003.8 1011.7 1008.1 1010.4 1009.2 1014.6 1015.9 1014.6 1006.2 1003.8 DAY 8 27 27 4 20 20 25 17 11 30 12 21 MEAN QFF PRESSURE IN HPA 1022.2 1020.1 1014.4 1009.8 1008.0 1003.9 1002.6 1001.4 1007.7 1012.9 1020.1 1022.5 1012.1 MAX. QFF PRESSURE IN HPA 1034.9 1032.4 1030.1 1020.6 1016.3 1013.2 1009.7 1010.9 1012.7 1020.0 1029.5 1034.4 1034.9 DAY 26 19 11 1 14 25 30 31 21 23 17 15 MIN. QFF PRESSURE IN HPA 1007.8 1005.9 1000.7 1002.8 1001.3 995.4 996.7 994.8 1002.1 1008.2 1006.7 1009.8 994.8 DAY 8 27 27 4 20 20 15 18 11 30 12 21 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.9 843.2 841.8 839.4 840.7 840.2 840.9 840.0 844.0 845.5 846.2 842.3 842.3 MAX. QFE PRESSURE IN HPA 850.5 852.3 852.1 846.3 845.2 846.2 844.9 844.5 847.8 850.1 852.4 852.0 852.4 DAY 27 6 11 1 17 25 29 30 21 10 18 3 MIN. QFE PRESSURE IN HPA 834.1 835.2 834.6 830.6 837.0 834.1 835.6 835.1 840.1 840.9 838.8 830.5 830.5 DAY 8 25 22 4 12 20 24 17 11 30 12 21 MEAN QNH PRESSURE IN HPA 1019.0 1019.3 1017.7 1014.8 1016.4 1015.8 1016.6 1015.5 1020.2 1022.0 1022.7 1018.2 1018.2 MAX. QNH PRESSURE IN HPA 1027.8 1029.9 1029.6 1022.9 1021.6 1022.8 1021.2 1020.8 1024.6 1027.3 1030.0 1029.5 1030.0 DAY 27 6 11 1 17 25 29 30 21 10 18 3 MIN. QNH PRESSURE IN HPA 1008.7 1009.9 1009.2 1004.6 1012.0 1008.7 1010.4 1009.8 1015.7 1016.6 1014.1 1004.4 1004.4 DAY 8 25 22 4 12 20 24 17 11 30 12 21 MEAN QFF PRESSURE IN HPA 1023.4 1021.4 1016.1 1011.1 1009.3 1005.3 1004.8 1003.8 1010.0 1015.1 1021.7 1023.5 1013.8 MAX. QFF PRESSURE IN HPA 1036.9 1033.6 1032.1 1022.5 1017.8 1015.3 1011.5 1014.0 1015.8 1021.8 1031.1 1035.1 1036.9 DAY 26 6 11 1 17 25 29 31 30 23 17 3 MIN. QFF PRESSURE IN HPA 1009.4 1007.5 1003.5 1004.2 1002.9 996.2 999.2 996.6 1004.7 1010.5 1007.1 1007.6 996.2 DAY 8 25 28 4 20 20 24 8 10 30 12 21 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.9 844.2 842.5 839.8 841.0 840.3 841.1 840.3 844.5 846.2 847.0 843.2 842.8 MAX. QFE PRESSURE IN HPA 852.1 852.6 852.9 847.2 845.4 846.5 844.9 845.0 848.1 850.8 853.1 853.3 853.3 DAY 27 6 11 1 17 25 30 31 21 10 18 3 MIN. QFE PRESSURE IN HPA 835.7 835.9 834.5 831.0 837.0 833.5 835.4 835.9 840.4 842.1 839.3 830.8 830.8 DAY 8 25 22 4 12 20 24 17 10 21 12 21 MEAN QNH PRESSURE IN HPA 1020.1 1020.5 1018.5 1015.2 1016.7 1015.9 1016.8 1015.9 1020.8 1022.8 1023.7 1019.3 1018.8 MAX. QNH PRESSURE IN HPA 1029.6 1030.2 1030.6 1023.9 1021.8 1023.1 1021.2 1021.4 1025.0 1028.1 1030.8 1031.0 1031.0 DAY 27 6 11 1 17 25 30 31 21 10 18 3 MIN. QNH PRESSURE IN HPA 1010.5 1010.8 1009.1 1005.0 1012.0 1008.0 1010.2 1010.8 1016.0 1018.0 1014.7 1004.8 1004.8 DAY 8 25 22 4 12 20 24 17 10 21 12 21 MEAN QFF PRESSURE IN HPA 1024.7 1022.6 1016.6 1011.0 1009.0 1004.5 1004.1 1003.3 1009.5 1015.1 1022.4 1024.4 1013.9 MAX. QFF PRESSURE IN HPA 1037.8 1034.0 1032.2 1021.8 1016.4 1013.0 1010.1 1012.8 1014.9 1020.8 1031.1 1035.4 1037.8 DAY 27 19 11 1 17 25 29 31 30 23 18 3 MIN. QFF PRESSURE IN HPA 1011.9 1008.9 1002.4 1003.7 1001.3 995.5 997.6 996.1 1003.9 1011.5 1007.5 1007.8 995.5 DAY 8 25 28 3 29 20 24 7 10 21 12 21 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 843.3 843.7 841.6 839.1 840.4 839.6 840.3 839.3 843.6 845.1 846.2 842.6 842.1 MAX. QFE PRESSURE IN HPA 850.9 851.9 851.5 846.0 844.7 845.9 844.4 843.5 847.1 849.9 852.8 852.3 852.8 DAY 27 6 11 1 17 24 29 31 29 10 18 3 MIN. QFE PRESSURE IN HPA 835.6 835.6 833.3 829.0 836.6 832.6 834.6 834.8 840.1 840.1 839.7 830.0 829.0 DAY 8 25 22 3 12 20 24 7 11 21 13 21 MEAN QNH PRESSURE IN HPA 1019.4 1019.9 1017.3 1014.5 1016.0 1015.0 1015.9 1014.7 1019.7 1021.5 1022.8 1018.6 1017.9 MAX. QNH PRESSURE IN HPA 1028.2 1029.4 1028.9 1022.5 1021.0 1022.4 1020.7 1019.6 1023.8 1027.1 1030.5 1029.9 1030.5 DAY 27 6 11 1 17 24 29 31 29 10 18 3 MIN. QNH PRESSURE IN HPA 1010.4 1010.4 1007.7 1002.7 1011.6 1006.9 1009.2 1009.5 1015.7 1015.7 1015.2 1003.9 1002.7 DAY 8 25 22 3 12 20 24 7 11 21 13 21 MEAN QFF PRESSURE IN HPA 1022.9 1020.9 1014.7 1009.9 1008.1 1003.4 1002.9 1001.5 1007.9 1012.8 1020.5 1022.8 1012.4 MAX. QFF PRESSURE IN HPA 1035.5 1031.5 1030.2 1019.2 1016.3 1012.4 1009.3 1009.5 1013.2 1016.9 1028.6 1033.4 1035.5 DAY 27 19 10 1 9 24 30 31 30 23 18 3 MIN. QFF PRESSURE IN HPA 1011.4 1007.9 1001.9 999.1 1001.4 994.2 996.4 995.0 1003.4 1007.4 1009.3 1006.7 994.2 DAY 8 25 28 3 29 20 24 7 9 21 12 21 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 842.4 842.6 840.1 838.1 839.2 838.2 838.7 837.7 842.1 843.9 845.2 841.9 840.8 MAX. QFE PRESSURE IN HPA 849.8 850.5 850.0 844.6 843.4 844.8 843.6 841.9 847.1 848.8 851.7 850.9 851.7 DAY 27 5 6 1 17 24 29 31 21 10 18 3 MIN. QFE PRESSURE IN HPA 835.1 834.5 832.4 829.0 835.8 831.7 832.4 832.6 837.7 839.0 838.9 828.6 828.6 DAY 7 26 22 3 12 20 24 7 10 21 12 21 MEAN QNH PRESSURE IN HPA 1018.3 1018.5 1015.7 1013.3 1014.6 1013.5 1014.1 1012.8 1018.0 1020.0 1021.6 1017.7 1016.5 MAX. QNH PRESSURE IN HPA 1027.0 1027.8 1027.2 1020.9 1019.5 1021.1 1019.7 1017.7 1023.8 1025.8 1029.2 1028.2 1029.2 DAY 27 5 6 1 17 24 29 31 21 10 18 3 MIN. QNH PRESSURE IN HPA 1009.8 1009.1 1006.7 1002.7 1010.6 1005.9 1006.7 1006.9 1012.9 1014.4 1014.2 1002.2 1002.2 DAY 7 26 22 3 12 20 24 7 10 21 12 21 MEAN QFF PRESSURE IN HPA 1021.7 1019.4 1012.9 1008.7 1006.9 1002.3 1001.1 999.6 1006.4 1011.6 1019.4 1021.8 1011.0 MAX. QFF PRESSURE IN HPA 1033.8 1030.7 1027.8 1017.9 1014.0 1011.5 1008.8 1007.4 1013.7 1015.3 1028.0 1032.6 1033.8 DAY 27 5 10 1 13 24 29 31 21 22 18 14 MIN. QFF PRESSURE IN HPA 1009.5 1005.3 1001.6 1000.9 1000.1 993.9 993.7 991.8 1000.4 1007.7 1008.3 1004.8 991.8 DAY 7 26 28 3 29 19 24 7 10 12 11 21 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 842.9 842.9 840.3 838.3 838.9 837.9 838.4 837.5 842.1 844.2 845.6 842.3 840.9 MAX. QFE PRESSURE IN HPA 849.7 851.0 850.0 845.6 843.6 844.8 843.2 842.5 847.2 849.2 851.7 850.8 851.7 DAY 27 5 6 1 17 24 29 30 21 10 18 3 MIN. QFE PRESSURE IN HPA 834.7 834.5 832.4 830.3 835.6 831.7 832.0 831.6 837.2 839.1 840.1 829.0 829.0 DAY 7 26 28 3 19 20 24 7 10 21 13 21 MEAN QNH PRESSURE IN HPA 1018.9 1018.9 1015.9 1013.6 1014.3 1013.1 1013.6 1012.6 1018.0 1020.4 1022.1 1018.2 1016.6 MAX. QNH PRESSURE IN HPA 1026.8 1028.4 1027.2 1022.1 1019.7 1021.1 1019.3 1018.5 1023.9 1026.3 1029.2 1028.1 1029.2 DAY 27 5 6 1 17 24 29 30 21 10 18 3 MIN. QNH PRESSURE IN HPA 1009.4 1009.1 1006.7 1004.2 1010.4 1005.9 1006.2 1005.7 1012.3 1014.5 1015.7 1002.7 1002.7 DAY 7 26 28 3 19 20 24 7 10 21 13 21 MEAN QFF PRESSURE IN HPA 1023.4 1020.8 1014.2 1009.7 1007.2 1002.7 1001.7 1000.9 1007.7 1013.6 1021.2 1023.4 1012.2 MAX. QFF PRESSURE IN HPA 1035.3 1032.7 1029.2 1020.8 1015.6 1012.6 1009.3 1011.2 1014.8 1018.3 1029.5 1035.4 1035.4 DAY 27 5 6 1 13 24 29 30 21 22 17 14 MIN. QFF PRESSURE IN HPA 1009.7 1006.2 1003.4 1002.6 1000.2 993.9 993.8 991.4 1001.3 1009.0 1010.3 1005.3 991.4 DAY 7 26 28 25 29 19 24 7 9 21 11 21 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 843.2 843.5 841.5 839.3 840.1 839.2 839.7 838.8 843.3 845.2 846.2 842.7 841.9 MAX. QFE PRESSURE IN HPA 850.3 851.8 851.0 846.7 844.4 846.1 844.4 843.8 847.7 849.4 852.6 851.6 852.6 DAY 27 5 6 1 16 24 29 30 21 10 18 2 MIN. QFE PRESSURE IN HPA 834.8 833.9 834.2 831.0 836.3 832.9 833.9 833.7 838.9 840.1 840.3 831.0 831.0 DAY 7 26 28 3 19 19 24 7 10 21 12 21 MEAN QNH PRESSURE IN HPA 1019.3 1019.7 1017.3 1014.8 1015.7 1014.6 1015.2 1014.1 1019.4 1021.6 1022.8 1018.7 1017.8 MAX. QNH PRESSURE IN HPA 1027.5 1029.3 1028.4 1023.3 1020.7 1022.6 1020.7 1020.0 1024.5 1026.5 1030.2 1029.1 1030.2 DAY 27 5 6 1 16 24 29 30 21 10 18 2 MIN. QNH PRESSURE IN HPA 1009.5 1008.4 1008.8 1005.0 1011.2 1007.3 1008.4 1008.2 1014.2 1015.7 1015.9 1005.0 1005.0 DAY 7 26 28 3 19 19 24 7 10 21 12 21 MEAN QFF PRESSURE IN HPA 1024.0 1021.7 1015.3 1010.4 1007.9 1003.2 1002.4 1001.5 1008.0 1013.9 1021.6 1023.8 1012.8 MAX. QFF PRESSURE IN HPA 1036.3 1034.0 1031.7 1019.6 1016.5 1013.3 1009.9 1011.6 1014.1 1020.2 1030.1 1036.0 1036.3 DAY 25 18 6 1 13 24 29 30 21 22 17 14 MIN. QFF PRESSURE IN HPA 1009.9 1005.5 1003.6 1003.4 999.9 994.3 994.9 993.1 1002.6 1008.8 1009.4 1007.8 993.1 DAY 7 26 27 3 19 19 24 7 10 21 11 21 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 843.0 843.3 841.6 839.3 840.4 839.8 840.2 839.4 843.5 845.2 846.2 842.6 842.0 MAX. QFE PRESSURE IN HPA 850.0 851.8 851.1 845.0 844.9 846.3 844.7 844.6 846.9 849.4 852.7 851.9 852.7 DAY 25 5 10 1 16 24 28 30 21 10 18 2 MIN. QFE PRESSURE IN HPA 833.9 833.9 834.7 830.6 836.7 833.3 834.6 834.1 839.2 840.5 839.7 832.4 830.6 DAY 7 26 28 3 19 19 24 16 10 29 11 21 MEAN QNH PRESSURE IN HPA 1019.1 1019.4 1017.4 1014.7 1016.0 1015.3 1015.8 1014.8 1019.6 1021.6 1022.8 1018.6 1017.9 MAX. QNH PRESSURE IN HPA 1027.2 1029.3 1028.5 1021.4 1021.2 1022.9 1021.0 1020.9 1023.6 1026.5 1030.3 1029.4 1030.3 DAY 25 5 10 1 16 24 28 30 21 10 18 2 MIN. QNH PRESSURE IN HPA 1008.4 1008.4 1009.4 1004.6 1011.7 1007.7 1009.2 1008.7 1014.6 1016.1 1015.2 1006.7 1004.6 DAY 7 26 28 3 19 19 24 16 10 29 11 21 MEAN QFF PRESSURE IN HPA 1022.7 1020.4 1014.6 1009.9 1008.0 1003.6 1002.5 1001.6 1007.8 1012.9 1020.6 1022.8 1012.3 MAX. QFF PRESSURE IN HPA 1036.4 1034.0 1031.0 1016.2 1016.7 1013.2 1009.5 1011.4 1012.5 1021.1 1029.2 1035.1 1036.4 DAY 25 18 6 1 13 24 29 30 30 22 16 14 MIN. QFF PRESSURE IN HPA 1008.9 1005.4 1001.8 1002.1 1000.1 994.5 995.7 994.2 1002.3 1008.2 1007.6 1009.7 994.2 DAY 7 26 26 3 19 19 24 16 10 29 11 21 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.5 1.5 4.5 11.4 15.2 20.1 23.9 23.8 18.8 16.5 5.6 0.6 11.9 MINIMUN AIR TEMPERATURE (C) -1.8 -1.9 -0.1 5.7 8.3 12.6 16.5 16.0 11.1 9.8 1.5 -2.6 6.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 8 7 3 0 0 0 0 0 0 0 2 14 34 DAYS WITH FREEZING MIN.<= 0 24 19 17 5 0 0 0 0 0 0 9 20 94 TEMPERATURE RECORDS LOWEST(C) -7.6 -9.2 -9.0 -2.0 1.8 3.0 13.0 11.0 7.0 7.0 -4.8 -9.4 -9.4 DAY 20 18 2 18 1 6 1 20 21 6 23 12 MAXIMUM AIR TEMPERATURE (C) 6.2 6.3 10.5 17.6 22.3 27.9 31.9 31.8 27.1 24.4 11.1 4.8 18.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 9 23 21 8 0 0 0 61 DAYS WITH MAXIMUM TEMP. <= 0 3 1 0 0 0 0 0 0 0 0 0 3 7 TEMPERATURE RECORDS HIGHEST(C) 15.6 13.0 17.6 27.6 26.8 34.0 38.4 37.4 33.2 28.6 19.6 15.4 38.4 DAY 12 8 7 9 16 22 17 12 6 11 5 18 DIF. BETWEEN (MAX.-MIN.) (C) 8.0 8.2 10.6 11.9 14.0 15.3 15.4 15.8 16.0 14.6 9.6 7.4 12.2 MEAN DAILY TEMP. (MDT) (C) 2.2 2.2 5.2 11.7 15.3 20.3 24.2 23.9 19.1 17.1 6.3 1.1 12.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 24.5 102.8 92.1 13.2 0.0 0.0 0.0 232.6 HEATING DEG. DAYS(BASE 18 0C) 490.0 442.3 396.2 194.0 88.7 13.4 0.0 0.0 24.6 37.6 350.3 524.8 2561.9 DEWPOINT (MEAN C) -5.3 -5.5 -3.7 1.3 2.4 5.7 9.2 7.9 3.9 1.0 -2.4 -3.8 0.9 MIXING RATIO (G/KG) 3.14 3.15 3.64 5.23 5.76 7.03 8.98 8.16 6.26 5.03 3.98 3.60 5.33 VAPOUR PRESSURE (HPA) 4.23 4.22 4.89 7.01 7.72 9.37 11.90 10.88 8.40 6.76 5.37 4.85 7.13 SATURATION DEF. (HPA) 2.88 2.82 3.89 7.48 10.43 15.42 19.32 20.02 14.84 12.94 4.14 1.83 9.67 RELATIVE HUMIDITY (MEAN %) 64 63 60 56 47 43 44 40 43 39 61 74 53 RELATIVE HUMIDITY (MAX. %) 79 82 82 77 72 66 64 61 66 59 80 87 73 RELATIVE HUMIDITY (MIN. %) 47 43 34 37 25 23 25 21 23 20 39 60 33 RELATIVE HUMIDITY (MEAN% 03UTC) 73 71 75 71 66 60 61 57 63 54 73 79 67 RELATIVE HUMIDITY (MEAN% 09UTC) 50 50 43 45 29 27 28 24 26 26 45 65 38 RELATIVE HUMIDITY (MEAN% 15UTC) 64 59 49 46 36 34 34 32 34 31 57 75 46 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 28.5 42.9 69.7 71.1 24.2 2.0 0.0 2.8 0.0 22.8 33.8 54.5 352.3 DAYS WITH PRECIPITATION >=10 1 1 2 1 0 0 0 0 0 1 1 1 8 DAYS WITH PRECIPITATION >= 5 1 4 3 6 1 0 0 0 0 2 3 4 24 DAYS WITH PRECIPITATION >= 1 3 9 9 10 7 1 0 1 0 4 6 11 61 DAYS WITH PRECIPITATION 5 15 14 15 11 1 1 3 0 6 8 16 95 GREATEST DAILY PRECIPITATION 22.0 10.0 33.0 31.0 6.0 2.0 0.0 2.0 0.0 10.0 11.0 12.0 33.0 DAY 28 14 26 16 24 1 ** 20 ** 4 28 6 DAY WITH THUNDER STORM 0 0 2 8 10 3 0 4 0 4 0 0 31 DAYS WITH SNOW OR SLEET 4 9 3 2 0 0 0 0 0 0 2 10 30 DAYS WITH DUST 0 0 1 2 0 0 0 0 1 1 0 0 5 WIND DIRECTION (PREVAILING) 315 270 135 270 315 360 360 45 135 270 270 135 360 PREVAILING WIND SPEED(KNOTS) 7.4 8.0 8.3 8.5 7.6 11.9 11.8 11.5 8.7 7.8 7.0 7.0 10.9 PREVAILING WIND PERCENT 20.2 18.3 16.5 13.3 11.3 17.1 21.8 15.3 14.2 11.7 8.8 12.1 9.4 CALMS PERCENT OF WIND 33.5 31.3 37.5 37.1 50.8 41.3 39.9 44.8 47.5 58.1 61.3 56.0 45.0 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 307 271 214 277 358 23 34 39 57 234 319 312 359 VECTOR WIND MAGNITUDE(KNOTS) 2.7 1.7 1.7 0.9 1.3 3.1 4.2 3.2 2.2 0.9 0.8 0.7 1.0 WIND STEADINESES (MEAN %) 51.9 30.9 29.8 15.8 29.5 55.4 68.9 60.4 44.9 26.5 25.8 18.9 20.4 WIND SPEED (MEAN KNOTS) 5.2 5.5 5.7 5.7 4.4 5.6 6.1 5.3 4.9 3.4 3.1 3.7 4.9 FASTEST WIND DIRECTION 10 240 210 210 320 30 20 10 10 270 240 20 210 FASTEST WIND SPEED (KNOTS) 29 23 39 29 25 27 27 27 27 25 27 31 39 DAY 19 3 20 6 7 5 24 2 20 27 21 11 DAYS WITH SKY CLEAR (0-2)/8 11 10 6 3 19 26 30 29 30 20 15 11 210 DAYS WITH P.CLOUDY (3-6)/8 14 10 17 14 8 4 1 2 0 8 8 8 94 DAYS WITH CLOUDY (7-8)/8 6 8 8 13 4 0 0 0 0 3 7 12 61 DAYS WITH VISIBILITY =< 2 KM 2 7 2 0 0 0 0 0 0 0 0 3 14 DURATION OF SUNSHINE HOURS 164.9 163.3 185.8 169.2 280.2 352.5 352.0 355.5 320.0 246.5 187.1 127.1 2904.1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.8 839.1 839.8 841.4 842.8 839.0 837.0 840.9 842.4 844.1 845.7 845.5 841.7 MAX. QFE PRESSURE IN HPA 849.6 846.2 850.4 848.5 848.9 844.9 843.6 845.1 849.3 850.6 854.7 855.2 855.2 DAY-HOUR 12- 6 12- 9 2- 6 8- 6 1- 6 6- 3 3- 6 4- 3 23- 6 15- 6 25- 6 11-15 MIN. QFE PRESSURE IN HPA 827.8 827.6 826.9 834.5 835.8 832.8 832.2 836.7 835.3 835.9 839.4 834.5 826.9 DAY-HOUR 28-12 19- 3 26- 9 20-15 7-15 30-15 7-15 27-15 6-15 27-12 19-12 6-12 MEAN QNH PRESSURE IN HPA 1018.8 1014.5 1015.3 1017.1 1018.8 1014.4 1012.0 1016.6 1018.4 1020.4 1022.2 1021.9 1017.5 MAX. QNH PRESSURE IN HPA 1026.7 1022.8 1027.7 1025.4 1025.9 1021.2 1019.7 1021.5 1026.4 1027.9 1032.7 1033.3 1033.3 DAY-HOUR 12- 6 12- 9 2- 6 8- 6 1- 6 6- 3 3- 6 4- 3 23- 6 15- 6 25- 6 11-15 MIN. QNH PRESSURE IN HPA 1001.3 1001.1 1000.2 1009.1 1010.6 1007.1 1006.4 1011.7 1010.1 1010.8 1014.8 1009.1 1000.2 DAY-HOUR 28-12 19- 3 26- 9 20-15 7-15 30-15 7-15 27-15 6-15 27-12 19-12 6-12 MEAN QFF PRESSURE IN HPA 1021.0 1016.5 1015.3 1012.4 1011.7 1004.0 999.0 1003.9 1008.8 1012.5 1021.5 1024.8 1012.6 MAX. QFF PRESSURE IN HPA 1028.0 1028.6 1034.9 1023.8 1024.5 1017.0 1008.0 1010.4 1022.7 1020.4 1036.2 1040.8 1040.8 DAY-HOUR 11-15 28-15 2- 6 29- 6 1- 3 6- 3 4- 3 4- 3 23- 3 15- 6 25- 6 11-15 MIN. QFF PRESSURE IN HPA 1003.9 1002.4 997.6 1001.4 1002.5 994.8 992.0 998.1 998.1 1000.8 1010.9 1008.7 992.0 DAY-HOUR 28-12 20- 9 26- 9 6-12 7-18 22-15 17-15 14-12 6-12 27-12 2-12 6-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 842.7 839.0 839.7 841.1 842.9 839.4 837.2 841.1 842.6 844.2 845.5 845.3 841.7 MAX. QFE PRESSURE IN HPA 849.4 845.2 848.3 846.2 847.8 844.2 842.0 844.1 848.5 849.0 852.8 853.2 853.2 DAY 12 7 2 8 2 6 4 4 23 15 25 12 MIN. QFE PRESSURE IN HPA 832.4 828.5 830.9 835.1 837.8 835.4 834.2 837.8 837.8 837.8 839.7 837.2 828.5 DAY 29 19 13 21 8 30 26 1 7 29 20 19 MEAN QNH PRESSURE IN HPA 1018.7 1014.3 1015.2 1016.8 1019.0 1014.8 1012.3 1016.8 1018.6 1020.5 1022.0 1021.8 1017.6 MAX. QNH PRESSURE IN HPA 1026.5 1021.6 1025.2 1022.8 1024.6 1020.4 1017.9 1020.3 1025.4 1026.0 1030.5 1030.9 1030.9 DAY 12 7 2 8 2 6 4 4 23 15 25 12 MIN. QNH PRESSURE IN HPA 1006.7 1002.1 1004.9 1009.8 1013.0 1010.2 1008.8 1013.0 1013.0 1013.0 1015.2 1012.3 1002.1 DAY 29 19 13 21 8 30 26 1 7 29 20 19 MEAN QFF PRESSURE IN HPA 1020.4 1015.8 1014.9 1011.9 1011.8 1004.2 998.9 1003.6 1008.5 1012.0 1020.6 1024.2 1012.2 MAX. QFF PRESSURE IN HPA 1026.3 1023.3 1032.3 1022.9 1022.6 1014.0 1005.1 1008.4 1020.5 1017.0 1032.9 1039.2 1039.2 DAY 19 1 2 29 2 6 3 4 23 16 25 12 MIN. QFF PRESSURE IN HPA 1009.6 1003.4 1003.8 1004.1 1005.2 997.5 994.3 1000.3 999.5 1003.6 1012.3 1008.8 994.3 DAY 16 20 26 6 29 23 18 15 7 29 2 19 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.7 839.0 840.1 841.5 843.3 840.1 837.9 841.9 843.3 844.7 845.8 845.3 842.1 MAX. QFE PRESSURE IN HPA 849.0 845.0 848.7 846.8 848.4 844.9 843.0 845.1 849.1 849.6 853.6 853.1 853.6 DAY 12 6 2 8 2 6 4 4 23 15 25 12 MIN. QFE PRESSURE IN HPA 834.1 827.6 831.9 835.4 838.2 835.6 834.5 838.6 838.2 838.2 840.2 837.1 827.6 DAY 29 19 13 21 29 30 26 1 7 27 21 19 MEAN QNH PRESSURE IN HPA 1018.7 1014.4 1015.6 1017.3 1019.4 1015.6 1013.1 1017.7 1019.4 1021.0 1022.3 1021.7 1018.0 MAX. QNH PRESSURE IN HPA 1026.0 1021.4 1025.7 1023.5 1025.3 1021.2 1019.0 1021.5 1026.1 1026.7 1031.4 1030.8 1031.4 DAY 12 6 2 8 2 6 4 4 23 15 25 12 MIN. QNH PRESSURE IN HPA 1008.7 1001.1 1006.1 1010.2 1013.4 1010.4 1009.1 1013.9 1013.4 1013.4 1015.8 1012.2 1001.1 DAY 29 19 13 21 29 30 26 1 7 27 21 19 MEAN QFF PRESSURE IN HPA 1021.5 1016.7 1016.3 1013.2 1013.1 1005.9 1000.9 1005.8 1011.1 1014.0 1022.5 1025.0 1013.8 MAX. QFF PRESSURE IN HPA 1027.5 1024.4 1034.0 1023.6 1024.5 1017.0 1008.0 1010.4 1022.7 1020.0 1035.0 1040.1 1040.1 DAY 12 6 2 29 1 6 4 4 23 16 25 12 MIN. QFF PRESSURE IN HPA 1010.7 1004.2 1004.2 1006.0 1005.3 998.8 996.3 1002.1 1001.6 1003.5 1014.0 1009.6 996.3 DAY 15 20 26 6 29 23 7 13 7 27 9 19 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.6 839.8 840.8 842.1 843.6 840.1 838.1 842.1 843.8 845.4 846.7 846.3 842.7 MAX. QFE PRESSURE IN HPA 849.6 846.0 850.4 848.5 848.9 844.6 843.6 844.9 849.3 850.6 854.7 853.5 854.7 DAY 12 6 2 8 1 6 3 4 23 15 25 12 MIN. QFE PRESSURE IN HPA 832.9 828.4 830.3 837.0 838.9 835.4 834.6 839.2 839.2 838.6 841.5 836.5 828.4 DAY 28 19 26 21 7 30 1 1 7 27 20 6 MEAN QNH PRESSURE IN HPA 1019.8 1015.3 1016.4 1018.0 1019.8 1015.7 1013.3 1018.0 1019.9 1021.9 1023.3 1022.9 1018.7 MAX. QNH PRESSURE IN HPA 1026.7 1022.5 1027.7 1025.4 1025.9 1020.9 1019.7 1021.2 1026.4 1027.9 1032.7 1031.3 1032.7 DAY 12 6 2 8 1 6 3 4 23 15 25 12 MIN. QNH PRESSURE IN HPA 1007.3 1002.0 1004.2 1012.0 1014.2 1010.2 1009.2 1014.6 1014.6 1013.9 1017.3 1011.4 1002.0 DAY 28 19 26 21 7 30 1 1 7 27 20 6 MEAN QFF PRESSURE IN HPA 1022.5 1017.8 1016.8 1013.5 1012.5 1005.3 1000.5 1005.4 1010.3 1014.2 1023.1 1026.2 1014.0 MAX. QFF PRESSURE IN HPA 1027.5 1025.8 1034.9 1023.8 1024.2 1016.7 1007.4 1010.0 1020.2 1020.4 1036.2 1039.4 1039.4 DAY 17 12 2 29 1 6 4 4 23 15 25 12 MIN. QFF PRESSURE IN HPA 1010.2 1004.8 1001.7 1004.8 1005.8 998.1 995.5 1001.5 1001.5 1004.4 1014.7 1010.9 995.5 DAY 28 20 26 6 7 27 7 6 7 27 1 19 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.9 839.3 840.0 841.4 843.0 839.2 837.2 841.3 842.7 844.3 845.8 845.5 841.9 MAX. QFE PRESSURE IN HPA 848.7 846.2 849.9 847.3 848.4 843.5 843.0 843.9 848.4 849.8 853.4 852.6 853.4 DAY 11 12 2 8 1 6 3 30 26 15 25 11 MIN. QFE PRESSURE IN HPA 830.6 828.2 826.9 836.5 837.5 834.5 834.2 838.9 838.2 836.5 840.4 834.9 826.9 DAY 28 19 26 21 7 30 8 1 7 27 14 6 MEAN QNH PRESSURE IN HPA 1019.0 1014.7 1015.6 1017.2 1019.0 1014.6 1012.3 1017.0 1018.7 1020.5 1022.2 1021.9 1017.7 MAX. QNH PRESSURE IN HPA 1025.7 1022.8 1027.1 1024.0 1025.3 1019.6 1019.0 1020.1 1025.3 1027.0 1031.2 1030.2 1031.2 DAY 11 12 2 8 1 6 3 30 26 15 25 11 MIN. QNH PRESSURE IN HPA 1004.6 1001.8 1000.2 1011.4 1012.6 1009.1 1008.8 1014.2 1013.4 1011.4 1016.0 1009.6 1000.2 DAY 28 19 26 21 7 30 8 1 7 27 14 6 MEAN QFF PRESSURE IN HPA 1020.7 1016.3 1015.2 1012.0 1011.6 1003.8 998.9 1003.9 1008.5 1012.0 1021.0 1024.3 1012.3 MAX. QFF PRESSURE IN HPA 1026.0 1025.3 1033.0 1022.0 1023.0 1014.6 1005.8 1007.9 1018.2 1016.9 1032.3 1037.1 1037.1 DAY 11 12 2 29 1 6 3 3 22 15 25 12 MIN. QFF PRESSURE IN HPA 1007.7 1002.4 997.6 1002.2 1004.2 996.8 993.3 1000.8 1000.7 1001.2 1012.3 1009.3 993.3 DAY 28 20 26 6 7 27 9 6 7 27 1 6 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 842.1 838.4 839.0 840.5 841.7 837.8 835.8 839.8 841.1 843.0 844.9 844.8 840.7 MAX. QFE PRESSURE IN HPA 847.7 844.8 848.6 846.0 847.9 842.0 842.2 842.4 847.0 849.1 852.9 853.4 853.4 DAY 7 12 2 30 1 6 3 3 22 15 25 11 MIN. QFE PRESSURE IN HPA 827.8 827.9 830.0 834.8 836.6 833.3 832.3 837.1 835.9 835.9 839.4 834.5 827.8 DAY 28 19 26 20 7 30 8 14 6 27 19 6 MEAN QNH PRESSURE IN HPA 1018.0 1013.7 1014.3 1016.1 1017.6 1013.0 1010.7 1015.2 1016.8 1019.0 1021.2 1021.1 1016.4 MAX. QNH PRESSURE IN HPA 1024.5 1021.1 1025.6 1022.5 1024.7 1017.9 1018.1 1018.3 1023.7 1026.1 1030.6 1031.2 1031.2 DAY 7 12 2 30 1 6 3 3 22 15 25 11 MIN. QNH PRESSURE IN HPA 1001.3 1001.4 1003.9 1009.5 1011.6 1007.7 1006.5 1012.2 1010.8 1010.8 1014.8 1009.1 1001.3 DAY 28 19 26 20 7 30 8 14 6 27 19 6 MEAN QFF PRESSURE IN HPA 1019.6 1015.2 1014.0 1011.1 1010.4 1002.3 997.3 1002.2 1006.9 1010.7 1020.0 1023.5 1011.1 MAX. QFF PRESSURE IN HPA 1025.9 1025.0 1031.0 1021.0 1022.3 1011.9 1005.3 1007.1 1017.6 1017.1 1031.9 1037.1 1037.1 DAY 22 28 2 30 1 6 3 3 22 15 25 11 MIN. QFF PRESSURE IN HPA 1003.9 1003.0 1002.6 1001.4 1003.3 995.4 992.3 998.1 998.1 1000.8 1010.9 1008.7 992.3 DAY 28 20 26 6 7 22 17 14 6 27 2 6 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 842.6 838.7 839.1 840.6 841.9 837.6 835.5 839.5 841.1 843.3 845.4 845.4 840.9 MAX. QFE PRESSURE IN HPA 848.7 845.0 848.5 846.5 847.3 842.1 841.6 842.2 847.4 849.2 853.5 855.2 855.2 DAY 11 6 2 30 1 6 3 3 22 15 25 11 MIN. QFE PRESSURE IN HPA 828.5 829.4 829.9 834.5 835.8 832.8 832.2 836.7 835.3 837.2 839.7 835.8 828.5 DAY 28 19 26 20 7 30 7 27 6 27 19 6 MEAN QNH PRESSURE IN HPA 1018.5 1014.0 1014.5 1016.3 1017.8 1012.7 1010.3 1014.9 1016.8 1019.3 1021.8 1021.9 1016.6 MAX. QNH PRESSURE IN HPA 1025.7 1021.4 1025.4 1023.1 1024.0 1018.0 1017.4 1018.1 1024.2 1026.3 1031.3 1033.3 1033.3 DAY 11 6 2 30 1 6 3 3 22 15 25 11 MIN. QNH PRESSURE IN HPA 1002.1 1003.2 1003.8 1009.1 1010.6 1007.1 1006.4 1011.7 1010.1 1012.3 1015.2 1010.6 1002.1 DAY 28 19 26 20 7 30 7 27 6 27 19 6 MEAN QFF PRESSURE IN HPA 1021.3 1016.3 1015.0 1012.1 1011.3 1003.0 998.0 1003.0 1008.4 1012.4 1022.0 1025.3 1012.3 MAX. QFF PRESSURE IN HPA 1028.0 1028.6 1032.1 1022.9 1022.1 1013.2 1006.0 1007.8 1019.3 1019.2 1034.8 1040.8 1040.8 DAY 11 28 2 30 1 6 3 3 22 15 25 11 MIN. QFF PRESSURE IN HPA 1005.1 1004.8 1003.1 1004.3 1003.4 994.8 992.0 998.8 999.4 1003.5 1013.3 1010.6 992.0 DAY 28 20 26 27 28 22 17 14 6 27 1 6 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 843.1 839.3 840.1 841.9 843.2 838.9 836.8 840.9 842.3 844.2 846.0 845.7 841.9 MAX. QFE PRESSURE IN HPA 849.2 846.1 848.9 848.5 848.3 842.9 842.3 843.6 849.1 849.5 853.7 854.2 854.2 DAY 11 12 2 30 1 6 3 3 22 15 25 11 MIN. QFE PRESSURE IN HPA 829.7 830.3 830.2 835.3 836.2 834.2 833.2 838.4 836.9 838.0 839.8 837.4 829.7 DAY 28 19 26 20 7 29 8 14 6 28 19 6 MEAN QNH PRESSURE IN HPA 1019.1 1014.8 1015.6 1017.8 1019.2 1014.2 1011.8 1016.5 1018.3 1020.4 1022.5 1022.2 1017.7 MAX. QNH PRESSURE IN HPA 1026.3 1022.6 1025.9 1025.4 1025.2 1018.9 1018.2 1019.7 1026.1 1026.6 1031.5 1032.1 1032.1 DAY 11 12 2 30 1 6 3 3 22 15 25 11 MIN. QNH PRESSURE IN HPA 1003.5 1004.2 1004.1 1010.1 1011.1 1008.8 1007.6 1013.7 1011.9 1013.2 1015.3 1012.5 1003.5 DAY 28 19 26 20 7 29 8 14 6 28 19 6 MEAN QFF PRESSURE IN HPA 1021.8 1017.2 1015.8 1013.2 1011.8 1003.7 999.0 1003.8 1008.7 1012.8 1022.3 1025.6 1013.0 MAX. QFF PRESSURE IN HPA 1027.2 1028.5 1032.1 1023.6 1022.7 1013.8 1005.7 1008.9 1020.1 1018.7 1034.7 1039.2 1039.2 DAY 11 28 2 30 1 6 21 3 22 15 25 11 MIN. QFF PRESSURE IN HPA 1006.4 1006.3 1003.5 1005.4 1002.5 996.8 992.8 999.5 999.0 1004.0 1013.3 1013.4 992.8 DAY 28 19 26 26 7 22 8 14 6 28 13 18 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 842.9 839.3 840.0 841.9 843.2 839.3 837.3 841.2 842.6 844.3 845.8 845.5 841.9 MAX. QFE PRESSURE IN HPA 849.2 845.5 848.6 848.5 847.8 844.2 842.6 843.7 849.1 849.7 853.6 853.4 853.6 DAY 11 28 2 30 1 5 3 3 22 14 25 11 MIN. QFE PRESSURE IN HPA 831.0 830.2 830.7 835.9 836.7 834.7 834.9 838.8 836.9 838.0 839.7 837.7 830.2 DAY 28 19 26 20 7 30 7 26 6 28 19 6 MEAN QNH PRESSURE IN HPA 1019.0 1014.7 1015.5 1017.7 1019.2 1014.7 1012.4 1016.9 1018.6 1020.5 1022.3 1022.0 1017.8 MAX. QNH PRESSURE IN HPA 1026.3 1021.9 1025.6 1025.4 1024.6 1020.4 1018.6 1019.8 1026.1 1026.8 1031.4 1031.2 1031.4 DAY 11 28 2 30 1 5 3 3 22 14 25 11 MIN. QNH PRESSURE IN HPA 1005.0 1004.1 1004.7 1010.8 1011.7 1009.4 1009.6 1014.1 1011.9 1013.2 1015.2 1012.9 1004.1 DAY 28 19 26 20 7 30 7 26 6 28 19 6 MEAN QFF PRESSURE IN HPA 1020.6 1016.4 1014.9 1012.6 1011.6 1003.8 998.8 1003.6 1008.4 1011.9 1021.1 1024.5 1012.4 MAX. QFF PRESSURE IN HPA 1026.3 1027.8 1031.1 1022.9 1022.4 1013.5 1005.0 1007.7 1020.8 1016.9 1032.2 1038.9 1038.9 DAY 18 28 1 30 1 5 3 3 22 14 24 11 MIN. QFF PRESSURE IN HPA 1007.9 1005.6 1003.9 1004.5 1004.6 997.0 992.7 1000.3 998.6 1003.8 1011.8 1011.3 992.7 DAY 15 19 26 26 7 21 8 26 6 28 13 18 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1986-2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.9 0.6 5.2 12.0 16.6 21.6 24.0 24.2 20.0 13.9 7.2 1.8 12.2 MINIMUN AIR TEMPERATURE (C) -5.4 -4.3 -0.4 5.3 8.9 12.9 15.9 15.5 11.0 6.6 1.6 -2.7 5.4 DAYS WITH MINIMUM TEMP. >=21 0.0 0.0 0.0 0.0 0.0 0.0 0.5 0.2 0.0 0.0 0.0 0.0 0.7 DAYS WITH MINIMUM TEMP. <=-4 17.9 13.7 5.2 0.2 0.0 0.0 0.0 0.0 0.0 0.0 2.1 10.6 49.7 DAYS WITH FREEZING MIN.<= 0 28.1 23.9 16.5 2.2 0.1 0.0 0.0 0.0 0.0 0.6 9.0 22.7 103.1 TEMPERATURE RECORDS LOWEST(C) -19.4 -19.1 -13.6 -5.0 0.0 3.0 8.2 7.8 2.2 -1.6 -9.6 -15.0 -19.4 YEAR-DAY 92-28 89- 1 92- 1 88- 6 92- 4 3- 6 94- 2 92-31 92-29 95-18 1-20 86-13 92-28 MAXIMUM AIR TEMPERATURE (C) 3.6 5.4 10.6 18.1 23.1 28.7 31.3 31.6 27.7 20.7 12.7 6.3 18.3 DAYS WITH MAXIMUM TEMP. >=30 0.0 0.0 0.0 0.0 1.2 12.5 21.0 22.3 9.5 0.1 0.0 0.0 66.6 DAYS WITH MAXIMUM TEMP. <= 0 7.2 4.5 0.7 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.1 2.8 15.4 TEMPERATURE RECORDS HIGHEST(C) 16.4 17.2 23.2 28.4 33.0 37.4 39.0 38.4 35.5 30.0 23.2 19.0 39.0 YEAR-DAY 0- 2 87-25 1-31 97-26 99-31 0-22 97-29 97-14 98- 1 2- 9 1- 6 90- 3 97-29 DIF. BETWEEN (MAX.-MIN.) (C) 9.0 9.7 11.0 12.8 14.2 15.8 15.4 16.1 16.7 14.1 11.1 9.0 12.9 MEAN DAILY TEMP. (MDT) (C) -0.9 0.5 5.1 11.7 16.0 20.8 23.6 23.5 19.4 13.6 7.2 1.8 11.9 STANDARD DEVIATION OF MDT(C) 2.67 2.74 2.12 1.29 1.53 1.28 0.78 1.38 1.28 1.97 1.59 2.25 1.74 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 1.2 33.3 87.9 88.4 13.9 0.1 0.0 0.0 224.8 HEATING DEG. DAYS(BASE 18 0C) 585.1 493.0 400.0 189.8 77.5 8.9 0.9 1.4 20.4 139.6 324.5 501.9 2743.0 DEWPOINT (MEAN C) -6.9 -6.4 -3.8 0.4 3.3 4.9 8.1 7.3 3.2 1.1 -1.7 -4.4 0.4 MIXING RATIO (G/KG) 2.84 2.98 3.64 4.92 6.03 6.71 8.34 7.92 5.98 5.12 4.21 3.44 5.18 VAPOUR PRESSURE (HPA) 3.83 4.00 4.88 6.59 8.08 8.95 11.08 10.56 8.01 6.90 5.67 4.64 6.93 SATURATION DEF. (HPA) 2.27 2.81 4.59 8.36 12.02 18.52 20.42 21.45 17.12 10.12 5.10 2.72 10.46 RELATIVE HUMIDITY (MEAN %) 67 63 58 51 47 38 40 39 38 48 58 67 51 RELATIVE HUMIDITY (MAX. %) 82 81 80 74 71 60 62 61 61 69 77 83 72 RELATIVE HUMIDITY (MIN. %) 51 46 39 31 28 22 24 22 21 30 40 51 34 RELATIVE HUMIDITY (MEAN% 03UTC) 77 76 75 70 65 56 58 58 58 66 73 79 68 RELATIVE HUMIDITY (MEAN% 09UTC) 56 53 46 37 33 26 28 26 24 34 44 57 39 RELATIVE HUMIDITY (MEAN% 15UTC) 67 59 51 43 39 31 34 33 33 44 56 68 47 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 29.1 33.2 53.6 43.3 30.8 5.4 3.3 2.9 1.3 24.1 40.1 36.1 303.2 DAYS WITH PRECIPITATION >=10 0.8 0.9 1.8 1.4 0.8 0.1 0.1 0.1 0.0 0.7 1.3 1.1 9.1 DAYS WITH PRECIPITATION >= 5 2.1 2.7 3.8 3.6 2.0 0.4 0.2 0.2 0.1 1.7 2.7 2.5 22.0 DAYS WITH PRECIPITATION >= 1 5.6 5.6 8.1 6.7 5.4 1.2 0.9 0.6 0.4 4.1 5.2 6.1 49.9 DAYS WITH PRECIPITATION 10.1 10.8 13.0 12.1 10.4 3.7 2.6 2.2 1.4 6.9 8.6 10.3 92.1 GREATEST DAILY PRECIPITATION 22.0 26.0 53.0 31.0 26.2 23.0 17.0 12.2 6.0 26.0 49.0 34.2 53.0 YEAR-DAY 3-28 95- 5 98-18 3-16 2- 4 95- 3 99-15 87- 6 0- 4 87-26 94- 7 91-12 98 DAY WITH THUNDER STORM 0.2 0.1 1.1 5.9 6.8 3.2 1.9 1.8 0.8 2.7 0.9 0.2 25.6 DAYS WITH SNOW OR SLEET 8.2 8.2 5.7 0.7 0.1 0.0 0.0 0.0 0.0 0.0 2.0 6.8 31.7 DAYS WITH DUST 0.2 0.3 0.4 1.8 2.3 1.6 0.8 1.0 0.9 0.8 0.4 0.1 10.6 WIND DIRECTION (PREVAILING) 315 315 315 315 315 360 45 360 360 315 315 315 315 PREVAILING WIND SPEED(KNOTS) 6.9 7.0 6.3 6.3 5.9 12.2 12.6 12.5 10.8 5.2 5.5 6.4 6.1 PREVAILING WIND PERCENT 25.7 25.6 18.6 18.4 14.4 15.4 20.4 16.8 12.1 12.6 14.4 19.0 15.4 CALMS PERCENT OF WIND 31.0 29.0 28.8 25.9 30.3 25.7 25.5 27.4 33.5 37.9 41.7 41.2 31.5 NO. OF WIND OBSERVATION 203.2 189.6 211.8 206.4 217.0 209.9 215.5 209.5 200.0 203.6 196.3 206.7 2469.5 VECTOR WIND DIRECTION (MEAN) 309 299 292 289 314 21 39 46 28 358 305 290 351 VECTOR WIND MAGNITUDE(KNOTS) 2.4 2.6 1.7 2.0 1.3 3.1 4.8 3.7 2.1 1.3 0.8 1.3 1.5 WIND STEADINESES (MEAN %) 47.1 46.4 28.8 32.8 23.6 44.3 64.0 53.6 37.5 26.5 19.0 31.7 26.3 WIND SPEED (MEAN KNOTS) 5.1 5.6 5.9 6.1 5.5 7.0 7.5 6.9 5.6 4.9 4.2 4.1 5.7 FASTEST WIND DIRECTION 360 360 10 260 180 10 10 20 30 10 10 360 360 FASTEST WIND SPEED (KNOTS) 47 39 39 41 33 39 39 39 33 35 37 39 47 YEAR-DAY 93-14 89-11 86- 8 98-18 86-22 1-11 90-11 86- 3 86-29 90-14 1-18 90-25 93 DAYS WITH SKY CLEAR (0-2)/8 12.8 11.3 10.1 7.2 15.4 24.6 26.1 26.4 27.3 19.1 13.1 9.8 203.2 DAYS WITH P.CLOUDY (3-6)/8 10.7 10.0 11.7 15.3 11.2 5.2 4.8 4.6 2.6 8.9 10.4 12.3 107.7 DAYS WITH CLOUDY (7-8)/8 7.5 6.9 9.3 7.5 4.3 0.3 0.1 0.0 0.1 3.1 6.5 8.9 54.5 DAYS WITH VISIBILITY =< 2 KM 4.1 3.2 2.3 0.9 0.7 0.1 0.0 0.0 0.1 0.3 1.4 4.2 17.3 DURATION OF SUNSHINE HOURS 168.4 177.1 193.7 205.8 282.9 335.0 345.5 336.2 300.4 238.4 177.4 146.3 2907.1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1986-2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.5 841.2 840.1 841.0 841.4 839.2 838.6 840.0 842.5 845.3 845.0 843.8 841.7 MAX. QFE PRESSURE IN HPA 854.1 853.5 852.9 851.4 849.6 848.5 847.3 848.7 852.9 854.1 856.0 855.2 856.0 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 93-22 0-30 96-29 94-23 95-25 96-18 3-11 96-18 MIN. QFE PRESSURE IN HPA 827.8 826.0 826.0 829.0 832.0 829.2 830.6 830.8 833.4 835.9 830.7 825.2 825.2 YEAR-DAY 3-28 1-21 87-19 2- 3 91-22 99-24 94-30 94- 2 96-21 3-27 1-18 88-27 88-27 MEAN QNH PRESSURE IN HPA 1018.4 1016.9 1015.7 1016.7 1017.1 1014.6 1013.9 1015.6 1018.5 1021.7 1021.3 1020.0 1017.5 MAX. QNH PRESSURE IN HPA 1032.0 1031.3 1030.6 1028.8 1026.7 1025.4 1024.0 1025.7 1030.6 1032.0 1034.2 1033.3 1034.2 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 93-22 0-30 96-29 94-23 95-25 96-18 3-11 96-18 MIN. QNH PRESSURE IN HPA 1001.3 999.2 999.2 1002.7 1006.2 1002.9 1004.6 1004.8 1007.8 1010.8 1004.7 998.3 998.3 YEAR-DAY 3-28 1-21 87-19 2- 3 91-22 99-24 94-30 94- 2 96-21 3-27 1-18 88-27 88-27 MEAN QFF PRESSURE IN HPA 1022.9 1020.3 1016.0 1012.2 1009.4 1003.5 1001.5 1003.6 1008.7 1015.9 1019.8 1022.0 1013.0 MAX. QFF PRESSURE IN HPA 1041.6 1040.2 1036.5 1029.7 1024.9 1019.8 1013.6 1019.0 1024.7 1030.3 1036.2 1042.1 1042.1 YEAR-DAY 92-10 89- 4 92-12 94- 5 92- 2 93-22 87-11 92-31 89-23 90-16 3-25 86- 7 86- 7 MIN. QFF PRESSURE IN HPA 1002.0 1002.4 997.2 997.5 994.1 991.5 990.2 991.4 997.5 1000.8 1002.7 1001.8 990.2 YEAR-DAY 86-19 3-20 87-19 90-15 1-29 1-17 94-30 2- 7 89-12 3-27 92-25 88-27 94-30 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 842.3 840.9 840.0 840.9 841.1 839.1 838.8 840.2 842.5 845.3 844.8 843.2 841.6 MAX. QFE PRESSURE IN HPA 850.8 852.0 851.4 848.8 847.8 847.3 844.6 846.5 849.1 852.5 852.8 853.6 853.6 YEAR-DAY 87-12 2- 6 2-11 94- 5 3- 2 93-22 93-27 92-31 89-24 93-20 3-25 86- 7 86- 7 MIN. QFE PRESSURE IN HPA 830.5 828.5 826.4 829.9 832.3 832.8 834.0 834.6 836.6 837.8 832.8 826.5 826.4 YEAR-DAY 86-20 3-19 87-14 2- 4 90-13 1-18 91-14 2-17 89-13 3-29 92-25 88-27 87-14 MEAN QNH PRESSURE IN HPA 1018.2 1016.5 1015.5 1016.6 1016.8 1014.5 1014.1 1015.7 1018.5 1021.7 1021.1 1019.2 1017.4 MAX. QNH PRESSURE IN HPA 1028.1 1029.5 1028.8 1025.8 1024.6 1024.0 1020.9 1023.1 1026.1 1030.1 1030.5 1031.4 1031.4 YEAR-DAY 87-12 2- 6 2-11 94- 5 3- 2 93-22 93-27 92-31 89-24 93-20 3-25 86- 7 86- 7 MIN. QNH PRESSURE IN HPA 1004.4 1002.1 999.7 1003.8 1006.5 1007.1 1008.5 1009.2 1011.6 1013.0 1007.1 999.8 999.7 YEAR-DAY 86-20 3-19 87-14 2- 4 90-13 1-18 91-14 2-17 89-13 3-29 92-25 88-27 87-14 MEAN QFF PRESSURE IN HPA 1022.4 1019.6 1015.4 1011.9 1009.4 1003.7 1001.4 1003.2 1008.3 1015.1 1019.0 1021.4 1012.6 MAX. QFF PRESSURE IN HPA 1038.5 1038.3 1034.6 1027.1 1022.9 1017.5 1012.9 1017.3 1022.9 1028.6 1032.9 1040.4 1040.4 YEAR-DAY 92-10 89- 4 90-17 94- 5 92- 2 93-22 87-11 92-31 89-23 90-16 3-25 86- 7 86- 7 MIN. QFF PRESSURE IN HPA 1006.2 1003.4 1000.1 1000.6 996.1 994.1 993.0 994.5 999.5 1003.6 1002.7 1003.4 993.0 YEAR-DAY 86-20 3-20 88-21 90-29 1-30 1-18 94-20 91- 6 3- 7 3-29 92-25 88-27 94-20 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.4 841.1 840.3 841.4 841.9 840.1 839.5 840.9 843.3 845.7 845.1 843.8 842.1 MAX. QFE PRESSURE IN HPA 852.9 852.5 852.1 850.6 848.5 848.2 846.9 848.0 852.0 853.1 854.8 853.8 854.8 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 93-22 0-30 96-29 94-23 93-20 96-18 87- 1 96-18 MIN. QFE PRESSURE IN HPA 829.5 827.6 827.3 830.6 832.7 831.3 833.1 834.4 834.9 837.3 832.5 825.2 825.2 YEAR-DAY 98-13 3-19 87-14 2- 4 90-13 99-25 95-16 94- 2 96-22 96-27 1-18 88-27 88-27 MEAN QNH PRESSURE IN HPA 1018.4 1016.9 1015.9 1017.1 1017.7 1015.6 1015.0 1016.6 1019.3 1022.2 1021.5 1020.0 1018.0 MAX. QNH PRESSURE IN HPA 1030.6 1030.1 1029.6 1027.9 1025.4 1025.1 1023.6 1024.9 1029.5 1030.8 1032.8 1031.6 1032.8 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 93-22 0-30 96-29 94-23 93-20 96-18 87- 1 96-18 MIN. QNH PRESSURE IN HPA 1003.3 1001.1 1000.7 1004.6 1007.0 1005.4 1007.5 1009.0 1009.6 1012.4 1006.8 998.3 998.3 YEAR-DAY 98-13 3-19 87-14 2- 4 90-13 99-25 95-16 94- 2 96-22 96-27 1-18 88-27 88-27 MEAN QFF PRESSURE IN HPA 1023.2 1020.6 1016.4 1013.2 1010.8 1005.4 1003.2 1005.1 1010.9 1017.6 1021.1 1023.0 1014.2 MAX. QFF PRESSURE IN HPA 1040.3 1039.9 1035.5 1029.2 1024.5 1019.8 1013.6 1019.0 1025.0 1030.3 1039.2 1042.1 1042.1 YEAR-DAY 92-10 89- 4 90-17 94- 5 3- 1 93-22 87-11 92-31 94-23 90-16 87-30 86- 7 86- 7 MIN. QFF PRESSURE IN HPA 1006.1 999.7 1000.6 1000.3 998.0 991.3 992.1 994.4 999.7 1003.5 1003.8 1001.8 991.3 YEAR-DAY 0-21 1-21 1-25 90-29 1-30 99-25 95-16 94- 2 0- 1 3-27 1-18 88-27 99-25 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1986-2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.4 842.0 841.1 841.9 842.3 840.3 839.7 841.3 843.8 846.5 846.0 844.7 842.8 MAX. QFE PRESSURE IN HPA 854.1 853.5 852.9 851.4 849.6 848.5 847.3 848.7 852.9 854.1 856.0 854.3 856.0 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 93-22 0-30 96-29 94-23 95-25 96-18 87- 1 96-18 MIN. QFE PRESSURE IN HPA 830.8 827.7 829.1 831.0 833.9 831.4 833.4 834.9 836.7 838.3 832.8 826.8 826.8 YEAR-DAY 98-13 1-21 87-14 2- 4 90-13 99-25 95-16 94- 2 96-21 96-27 1-18 88-27 88-27 MEAN QNH PRESSURE IN HPA 1019.5 1017.9 1016.8 1017.8 1018.2 1015.8 1015.2 1017.1 1020.0 1023.1 1022.6 1021.0 1018.7 MAX. QNH PRESSURE IN HPA 1032.0 1031.3 1030.6 1028.8 1026.7 1025.4 1024.0 1025.7 1030.6 1032.0 1034.2 1032.2 1034.2 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 93-22 0-30 96-29 94-23 95-25 96-18 87- 1 96-18 MIN. QNH PRESSURE IN HPA 1004.8 1001.2 1002.8 1005.0 1008.4 1005.5 1007.8 1009.6 1011.7 1013.6 1007.1 1000.1 1000.1 YEAR-DAY 98-13 1-21 87-14 2- 4 90-13 99-25 95-16 94- 2 96-21 96-27 1-18 88-27 88-27 MEAN QFF PRESSURE IN HPA 1024.7 1021.6 1017.3 1013.3 1010.3 1004.6 1002.9 1005.0 1010.1 1017.0 1021.4 1023.5 1014.3 MAX. QFF PRESSURE IN HPA 1041.6 1040.2 1036.5 1029.7 1024.7 1019.6 1011.8 1017.4 1022.6 1029.1 1036.2 1041.1 1041.6 YEAR-DAY 92-10 89- 4 92-12 94- 5 92- 2 93-22 87-11 92-31 89-23 90-16 3-25 86- 7 92-10 MIN. QFF PRESSURE IN HPA 1009.6 1004.8 1001.7 1000.8 997.5 994.3 994.1 996.1 1001.5 1004.4 1004.4 1004.9 994.1 YEAR-DAY 86-12 3-20 3-26 90-29 1-30 90-27 94-20 2- 7 91- 8 3-27 1-18 88-27 94-20 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.7 841.5 840.4 841.2 841.6 839.4 838.9 840.4 842.7 845.4 845.0 843.8 841.9 MAX. QFE PRESSURE IN HPA 853.2 853.2 851.5 851.1 848.8 847.5 846.9 848.1 852.0 852.9 855.2 853.0 855.2 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 93-22 96- 3 96-29 94-23 93-17 96-18 87- 1 96-18 MIN. QFE PRESSURE IN HPA 830.5 826.0 826.9 829.0 833.2 830.8 832.6 833.5 835.5 836.5 831.7 826.2 826.0 YEAR-DAY 0-21 1-21 3-26 2- 3 91-22 99-25 95-16 94- 2 96-21 3-27 1-18 88-27 1-21 MEAN QNH PRESSURE IN HPA 1018.7 1017.3 1016.0 1016.9 1017.4 1014.9 1014.3 1015.9 1018.7 1021.9 1021.4 1020.0 1017.8 MAX. QNH PRESSURE IN HPA 1030.9 1030.9 1028.9 1028.5 1025.8 1024.3 1023.6 1025.0 1029.5 1030.6 1033.3 1030.7 1033.3 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 93-22 96- 3 96-29 94-23 93-17 96-18 87- 1 96-18 MIN. QNH PRESSURE IN HPA 1004.4 999.2 1000.2 1002.7 1007.6 1004.8 1006.9 1008.0 1010.3 1011.4 1005.9 999.4 999.2 YEAR-DAY 0-21 1-21 3-26 2- 3 91-22 99-25 95-16 94- 2 96-21 3-27 1-18 88-27 1-21 MEAN QFF PRESSURE IN HPA 1022.7 1020.1 1015.9 1011.9 1009.2 1003.3 1001.4 1003.3 1008.3 1014.9 1019.0 1021.4 1012.6 MAX. QFF PRESSURE IN HPA 1037.4 1037.7 1034.1 1029.5 1024.2 1017.0 1009.4 1015.3 1020.7 1027.2 1032.3 1037.1 1037.7 YEAR-DAY 92-10 89- 4 90-17 94- 5 92- 2 93-22 87-10 92-31 89-23 90-15 3-25 3-12 89- 4 MIN. QFF PRESSURE IN HPA 1006.9 1002.4 997.6 999.1 998.0 993.2 992.6 993.3 999.0 1001.2 1005.4 1003.8 992.6 YEAR-DAY 86-12 3-20 3-26 2- 3 1-29 1- 6 94-20 90- 7 89-11 3-27 1-18 88-27 94-20 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 841.8 840.5 839.3 840.1 840.5 838.2 837.5 838.8 841.3 844.3 844.1 843.1 840.8 MAX. QFE PRESSURE IN HPA 852.1 852.3 850.2 849.5 847.9 846.5 845.7 846.7 850.5 852.2 854.0 853.4 854.0 YEAR-DAY 99- 2 98-22 90- 9 94- 5 3- 1 93-22 0-30 96-29 94-23 95-25 96-18 3-11 96-18 MIN. QFE PRESSURE IN HPA 827.8 827.8 826.0 829.0 832.1 830.0 830.8 831.1 834.0 835.9 830.7 827.2 826.0 YEAR-DAY 3-28 1-21 87-19 2- 3 97- 4 99-24 95-16 94- 2 96-21 3-27 1-18 88-27 87-19 MEAN QNH PRESSURE IN HPA 1017.7 1016.1 1014.7 1015.6 1016.1 1013.4 1012.7 1014.2 1017.0 1020.5 1020.3 1019.1 1016.5 MAX. QNH PRESSURE IN HPA 1029.6 1029.9 1027.4 1026.6 1024.7 1023.1 1022.2 1023.3 1027.8 1029.8 1031.9 1031.2 1031.9 YEAR-DAY 99- 2 98-22 90- 9 94- 5 3- 1 93-22 0-30 96-29 94-23 95-25 96-18 3-11 96-18 MIN. QNH PRESSURE IN HPA 1001.3 1001.3 999.2 1002.7 1006.3 1003.9 1004.8 1005.2 1008.5 1010.8 1004.7 1000.6 999.2 YEAR-DAY 3-28 1-21 87-19 2- 3 97- 4 99-24 95-16 94- 2 96-21 3-27 1-18 88-27 87-19 MEAN QFF PRESSURE IN HPA 1021.7 1018.9 1014.6 1010.9 1008.3 1002.1 999.9 1001.7 1006.8 1013.8 1018.1 1020.6 1011.4 MAX. QFF PRESSURE IN HPA 1036.8 1036.1 1032.1 1027.0 1023.9 1015.3 1009.4 1014.1 1020.6 1026.5 1031.9 1037.1 1037.1 YEAR-DAY 92-10 89- 4 90-17 94- 5 92- 2 93-22 87-10 92-30 89-22 90-15 3-25 3-11 3-11 MIN. QFF PRESSURE IN HPA 1003.9 1002.9 997.2 997.5 995.7 991.5 990.3 991.8 997.5 1000.8 1003.5 1004.8 990.3 YEAR-DAY 3-28 92-24 87-19 90-15 1-29 1-17 94-20 2- 7 89-12 3-27 1-17 2-21 94-20 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1986-2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 842.3 840.8 839.5 840.2 840.5 837.9 837.2 838.6 841.3 844.6 844.6 843.7 840.9 MAX. QFE PRESSURE IN HPA 852.1 853.2 850.6 849.6 847.3 846.2 845.4 846.7 850.3 852.2 854.6 855.2 855.2 YEAR-DAY 99- 2 98-22 90- 9 98-11 3- 1 93-22 0-30 96-29 94-23 95-25 96-18 3-11 3-11 MIN. QFE PRESSURE IN HPA 828.5 828.6 826.7 830.3 832.0 829.2 830.6 830.8 833.4 837.2 832.7 828.6 826.7 YEAR-DAY 3-28 99-20 88- 4 2- 3 91-22 99-24 94-30 94- 2 96-21 3-27 1-18 88-26 88- 4 MEAN QNH PRESSURE IN HPA 1018.2 1016.5 1014.9 1015.8 1016.1 1013.1 1012.3 1013.9 1017.0 1020.9 1020.9 1019.8 1016.6 MAX. QNH PRESSURE IN HPA 1029.6 1030.9 1027.9 1026.7 1024.0 1022.8 1021.8 1023.3 1027.5 1029.8 1032.6 1033.3 1033.3 YEAR-DAY 99- 2 98-22 90- 9 98-11 3- 1 93-22 0-30 96-29 94-23 95-25 96-18 3-11 3-11 MIN. QNH PRESSURE IN HPA 1002.1 1002.2 1000.0 1004.2 1006.2 1002.9 1004.6 1004.8 1007.8 1012.3 1007.0 1002.2 1000.0 YEAR-DAY 3-28 99-20 88- 4 2- 3 91-22 99-24 94-30 94- 2 96-21 3-27 1-18 88-26 88- 4 MEAN QFF PRESSURE IN HPA 1023.0 1020.2 1015.3 1011.7 1009.0 1002.8 1000.5 1002.4 1008.6 1016.3 1020.5 1022.8 1012.7 MAX. QFF PRESSURE IN HPA 1039.1 1038.6 1034.1 1029.6 1024.7 1016.0 1010.4 1015.1 1022.2 1028.8 1039.2 1040.8 1040.8 YEAR-DAY 92-10 89- 3 92-12 96- 4 92- 2 93-22 0-30 92-31 94-23 87-28 87-30 3-11 3-11 MIN. QFF PRESSURE IN HPA 1004.5 1000.9 998.6 1001.0 995.8 990.0 990.2 990.6 998.9 1003.5 1004.9 1004.1 990.0 YEAR-DAY 86-19 99-20 88- 4 93-20 1-29 99-24 94-30 94- 2 96- 8 3-27 1-17 86-27 99-24 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 842.6 841.3 840.5 841.4 841.3 838.9 838.5 840.0 842.5 845.4 845.1 843.4 841.7 MAX. QFE PRESSURE IN HPA 850.3 851.8 851.4 849.8 848.3 847.6 844.4 846.7 849.1 852.6 853.7 854.2 854.2 YEAR-DAY 87-12 2- 5 90- 9 94- 5 86-20 93-22 2-29 92-30 3-22 90-15 3-25 3-11 3-11 MIN. QFE PRESSURE IN HPA 828.1 830.0 827.4 831.0 832.6 831.6 832.2 833.0 836.2 838.0 833.6 828.9 827.4 YEAR-DAY 86-19 90-15 88- 4 2- 3 1-29 1-17 91-13 89- 1 89-12 3-28 1-17 88-26 88- 4 MEAN QNH PRESSURE IN HPA 1018.6 1017.1 1016.1 1017.1 1017.1 1014.2 1013.8 1015.5 1018.4 1021.9 1021.5 1019.5 1017.6 MAX. QNH PRESSURE IN HPA 1027.5 1029.3 1028.8 1027.0 1025.2 1024.4 1020.7 1023.3 1026.1 1030.2 1031.5 1032.1 1032.1 YEAR-DAY 87-12 2- 5 90- 9 94- 5 86-20 93-22 2-29 92-30 3-22 90-15 3-25 3-11 3-11 MIN. QNH PRESSURE IN HPA 1001.7 1003.9 1000.8 1005.0 1006.9 1005.7 1006.4 1007.4 1011.1 1013.2 1008.1 1002.6 1000.8 YEAR-DAY 86-19 90-15 88- 4 2- 3 1-29 1-17 91-13 89- 1 89-12 3-28 1-17 88-26 88- 4 MEAN QFF PRESSURE IN HPA 1023.9 1021.0 1016.5 1012.6 1009.4 1003.2 1001.3 1003.5 1008.7 1015.9 1020.5 1022.8 1013.3 MAX. QFF PRESSURE IN HPA 1039.8 1039.9 1035.2 1027.5 1024.9 1017.4 1012.0 1016.4 1022.6 1029.7 1034.7 1040.5 1040.5 YEAR-DAY 92- 9 89- 3 90-16 94- 4 92- 2 93-22 87-10 92-30 89-22 90-15 3-25 86- 6 86- 6 MIN. QFF PRESSURE IN HPA 1002.0 1005.5 998.3 1002.1 994.1 992.5 992.4 993.1 999.0 1004.0 1004.6 1006.9 992.4 YEAR-DAY 86-19 2-26 88- 4 91- 9 1-29 1-17 94-19 2- 7 3- 6 3-28 1-17 86-27 94-19 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 842.5 841.2 840.4 841.3 841.4 839.2 838.8 840.3 842.7 845.4 845.0 843.3 841.8 MAX. QFE PRESSURE IN HPA 850.4 851.8 851.2 849.8 847.8 847.2 844.7 847.1 849.1 852.4 853.6 853.6 853.6 YEAR-DAY 87-11 2- 5 90- 9 94- 5 3- 1 93-22 2-28 92-30 89-23 93-16 3-25 86- 6 86- 6 MIN. QFE PRESSURE IN HPA 830.0 830.2 827.5 830.6 832.9 832.1 832.7 833.4 836.6 838.0 833.6 828.4 827.5 YEAR-DAY 86-19 3-19 87-13 2- 3 1-29 1-17 91-13 89- 1 89-12 3-28 1-17 88-26 87-13 MEAN QNH PRESSURE IN HPA 1018.4 1016.9 1016.0 1017.1 1017.2 1014.6 1014.2 1015.9 1018.6 1021.9 1021.4 1019.4 1017.6 MAX. QNH PRESSURE IN HPA 1027.7 1029.3 1028.6 1027.0 1024.6 1023.9 1021.0 1023.8 1026.1 1030.0 1031.4 1031.4 1031.4 YEAR-DAY 87-11 2- 5 90- 9 94- 5 3- 1 93-22 2-28 92-30 89-23 93-16 3-25 86- 6 86- 6 MIN. QNH PRESSURE IN HPA 1003.9 1004.1 1000.9 1004.6 1007.3 1006.3 1007.0 1007.8 1011.6 1013.2 1008.1 1002.0 1000.9 YEAR-DAY 86-19 3-19 87-13 2- 3 1-29 1-17 91-13 89- 1 89-12 3-28 1-17 88-26 87-13 MEAN QFF PRESSURE IN HPA 1022.7 1020.0 1015.8 1012.1 1009.3 1003.3 1001.2 1003.2 1008.4 1015.1 1019.3 1021.6 1012.6 MAX. QFF PRESSURE IN HPA 1038.5 1038.5 1035.1 1028.0 1023.7 1017.2 1011.5 1016.6 1022.2 1029.6 1032.2 1039.8 1039.8 YEAR-DAY 92- 9 89- 3 90-16 94- 4 92- 2 93-21 87-10 92-30 89-22 90-15 3-24 86- 6 86- 6 MIN. QFF PRESSURE IN HPA 1004.8 1005.4 998.7 1001.2 994.4 992.4 992.7 993.2 998.6 1003.8 1004.8 1005.2 992.4 YEAR-DAY 86-19 2-26 88- 4 91- 9 1-29 1-17 3- 8 89- 1 3- 6 3-28 1-17 88-25 1-17 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 1 LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M AVERAGE OF DRY BULB TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1986 0.6 1.9 1.9 10.6 14.2 19.3 24.1 22.6 21.5 15.4 4.6 -2.3 11.2 1987 2.2 3.3 4.3 10.6 17.8 22.3 22.5 22.1 18.0 9.1 8.2 2.5 11.9 1988 -1.0 -0.6 5.5 10.1 16.8 21.2 21.7 21.3 18.4 13.1 7.0 1.9 11.3 1989 -6.2 -5.7 4.6 12.5 16.4 22.4 24.7 24.0 18.7 14.2 8.1 3.0 11.4 1990 -3.8 -2.4 3.9 10.7 16.2 21.9 23.2 22.3 20.6 12.5 9.1 2.2 11.4 1991 -2.2 -2.3 4.0 12.2 15.2 20.2 23.5 22.8 18.3 13.0 6.9 -2.0 10.8 1992 -6.0 -2.8 0.3 9.3 11.7 18.9 23.5 20.1 16.9 12.6 7.2 -0.0 9.3 1993 -3.3 -0.7 3.6 11.2 14.9 20.4 22.7 22.2 19.2 11.2 3.1 1.6 10.5 1994 0.8 0.9 6.2 12.0 15.3 19.0 22.9 25.1 18.6 13.8 8.1 0.1 11.9 1995 3.2 3.6 8.6 12.9 16.7 20.8 26.0 27.4 21.5 13.6 8.9 1.2 13.7 1996 -1.8 1.8 3.1 10.4 18.5 22.0 25.4 25.9 23.0 13.9 7.1 5.5 12.9 1997 1.2 0.1 4.0 12.6 17.9 24.0 26.1 27.6 20.2 17.1 7.2 2.7 13.4 1998 -2.4 -1.0 6.1 14.3 17.6 25.0 25.4 26.2 21.7 15.6 11.6 6.0 13.8 1999 1.6 5.9 7.5 13.4 20.4 24.9 24.1 27.5 21.5 16.5 6.6 4.1 14.5 2000 -0.1 1.2 7.0 15.9 20.8 23.8 26.6 26.4 21.8 12.9 6.1 2.7 13.8 2001 1.0 3.9 10.5 15.3 17.1 21.6 22.4 24.1 20.0 13.2 6.8 4.1 13.3 2002 -1.1 2.6 8.0 10.7 15.9 21.5 23.8 23.7 21.9 16.7 7.1 -2.0 12.4 2003 1.5 1.5 4.5 11.4 15.2 20.1 23.9 23.8 18.8 16.5 5.6 0.6 11.9 MEAN -0.9 0.6 5.2 12.0 16.6 21.6 24.0 24.2 20.0 13.9 7.2 1.8 12.2 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 2 LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M AVERAGE OF MINIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1986 -4.0 -2.6 -3.0 5.3 7.4 11.3 15.8 13.8 10.3 7.1 1.0 -6.6 4.7 1987 -2.4 -1.8 0.3 3.7 10.4 13.5 14.6 14.8 10.1 4.1 1.4 -1.9 5.6 1988 -5.2 -5.3 0.1 4.4 8.6 13.2 15.4 14.8 10.6 6.3 1.3 -3.1 5.1 1989 -10.5 -10.7 0.2 5.5 8.7 13.4 16.3 16.4 10.4 6.9 3.0 -1.1 4.9 1990 -7.5 -6.8 -1.2 4.1 8.1 12.7 15.8 14.1 11.5 5.5 2.7 -3.2 4.6 1991 -6.6 -6.6 -0.3 6.1 8.0 12.3 15.8 14.6 9.9 6.9 1.1 -6.2 4.6 1992 -10.3 -7.1 -3.9 3.5 6.5 11.7 15.7 13.3 8.6 4.9 1.5 -3.0 3.5 1993 -7.0 -4.8 -1.4 5.1 8.6 12.3 15.5 14.9 11.2 4.7 0.2 -2.3 4.8 1994 -3.4 -3.1 0.7 5.8 8.7 11.6 14.7 14.4 9.5 6.6 2.3 -4.4 5.3 1995 -2.8 -1.8 0.2 5.1 9.0 11.5 16.5 16.4 10.9 4.8 0.4 -5.0 5.4 1996 -6.1 -2.6 -1.5 4.2 10.3 12.4 16.4 15.4 12.6 5.8 0.7 -0.6 5.6 1997 -5.1 -6.5 -1.6 4.7 9.0 14.6 16.7 16.6 10.1 8.0 2.0 -1.7 5.6 1998 -7.1 -6.0 0.3 6.3 9.6 15.2 16.2 16.8 12.1 6.4 3.9 -0.6 6.1 1999 -3.3 -1.0 0.1 5.3 9.8 14.4 15.2 18.0 11.4 7.6 1.1 -1.3 6.4 2000 -5.0 -4.8 -0.4 7.2 11.0 13.4 16.8 16.7 12.2 5.7 0.8 -0.9 6.1 2001 -3.9 -2.3 2.4 6.9 9.2 13.5 15.4 16.1 12.2 7.1 1.8 0.8 6.6 2002 -4.4 -1.7 1.8 6.0 8.7 13.3 16.5 16.0 12.9 9.8 2.7 -5.2 6.4 2003 -1.8 -1.9 -0.1 5.7 8.3 12.6 16.5 16.0 11.1 9.8 1.5 -2.6 6.3 MEAN -5.4 -4.3 -0.4 5.3 8.9 12.9 15.9 15.5 11.0 6.6 1.6 -2.7 5.4 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 3 LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M AVERAGE OF MAXIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1986 6.0 6.6 7.5 16.6 21.0 27.0 31.8 29.9 27.9 21.1 8.7 2.3 17.2 1987 7.9 9.7 9.0 18.0 25.2 30.0 30.3 30.3 26.5 13.5 13.2 5.9 18.3 1988 2.1 2.7 11.8 16.8 23.9 28.9 29.2 29.0 26.9 20.8 14.0 7.4 17.8 1989 -1.4 0.0 10.1 19.8 23.9 30.7 32.8 31.8 27.6 22.2 13.9 8.1 18.3 1990 0.8 1.8 10.4 17.6 24.0 30.2 30.8 30.9 30.5 20.8 17.1 7.9 18.6 1991 2.7 2.9 8.8 19.2 22.4 28.4 31.3 31.3 27.1 20.4 14.0 2.8 17.6 1992 -1.6 1.9 5.3 15.8 17.3 26.1 32.3 27.9 25.8 21.0 14.4 4.0 15.9 1993 0.7 3.9 9.5 17.6 21.0 28.5 30.8 30.4 28.7 18.9 7.4 6.7 17.0 1994 5.7 6.0 12.3 19.1 22.4 27.0 31.3 31.4 24.6 19.1 12.1 4.0 17.9 1995 7.8 8.4 14.1 18.1 21.7 25.9 32.4 34.2 28.0 19.7 14.9 6.0 19.3 1996 1.7 5.9 6.9 15.2 23.6 27.5 31.0 32.4 29.5 19.6 12.4 10.2 18.0 1997 6.2 5.3 8.5 17.6 23.3 29.7 32.2 34.4 26.4 22.9 11.4 6.3 18.7 1998 1.3 2.5 10.1 19.3 22.7 30.5 31.1 32.2 27.8 21.5 16.8 11.4 18.9 1999 5.6 10.8 12.8 18.9 26.3 31.0 29.6 33.4 27.9 22.3 11.4 8.8 19.9 2000 4.2 5.7 12.0 21.2 26.1 29.6 32.4 32.2 28.1 18.0 10.3 6.0 18.8 2001 5.3 8.3 16.1 21.6 25.5 29.3 30.0 32.4 27.9 20.8 13.1 9.1 19.9 2002 3.8 8.0 15.2 16.3 23.0 29.1 31.5 32.1 30.9 24.8 13.1 2.3 19.2 2003 6.2 6.3 10.5 17.6 22.3 27.9 31.9 31.8 27.1 24.4 11.1 4.8 18.5 MEAN 3.6 5.4 10.6 18.1 23.1 28.7 31.3 31.6 27.7 20.7 12.7 6.3 18.3 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 4 LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M DIFFERENCE BETWEEN AVERAGE MAXIMUM AND MINIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1986 10.0 9.2 10.5 11.3 13.6 15.7 16.0 16.1 17.6 14.0 7.7 8.9 12.5 1987 10.3 11.5 8.7 14.3 14.8 16.5 15.7 15.5 16.4 9.4 11.8 7.8 12.7 1988 7.3 8.0 11.7 12.4 15.3 15.7 13.8 14.2 16.3 14.5 12.7 10.5 12.7 1989 9.1 10.7 9.9 14.3 15.2 17.3 16.5 15.4 17.2 15.3 10.9 9.2 13.4 1990 8.3 8.6 11.6 13.5 15.9 17.5 15.0 16.8 19.0 15.3 14.4 11.1 14.0 1991 9.3 9.5 9.1 13.1 14.4 16.1 15.5 16.7 17.2 13.5 12.9 9.0 13.0 1992 8.7 9.0 9.2 12.3 10.8 14.4 16.6 14.6 17.2 16.1 12.9 7.0 12.4 1993 7.7 8.7 10.9 12.5 12.4 16.2 15.3 15.5 17.5 14.2 7.2 9.0 12.2 1994 9.1 9.1 11.6 13.3 13.7 15.4 16.6 17.0 15.1 12.5 9.8 8.4 12.6 1995 10.6 10.2 13.9 13.0 12.7 14.4 15.9 17.8 17.1 14.9 14.5 11.0 13.9 1996 7.8 8.5 8.4 11.0 13.3 15.1 14.6 17.0 16.9 13.8 11.7 10.8 12.4 1997 11.3 11.8 10.1 12.9 14.3 15.1 15.5 17.8 16.3 14.9 9.4 8.0 13.1 1998 8.4 8.5 9.8 13.0 13.1 15.3 14.9 15.4 15.7 15.1 12.9 12.0 12.8 1999 8.9 11.8 12.7 13.6 16.5 16.6 14.4 15.4 16.5 14.7 10.3 10.1 13.5 2000 9.2 10.5 12.4 14.0 15.1 16.2 15.6 15.5 15.9 12.3 9.5 6.9 12.7 2001 9.2 10.6 13.7 14.7 16.3 15.8 14.6 16.3 15.7 13.7 11.3 8.3 13.3 2002 8.2 9.7 13.4 10.3 14.3 15.8 15.0 16.1 18.0 15.0 10.4 7.5 12.8 2003 8.0 8.2 10.6 11.9 14.0 15.3 15.4 15.8 16.0 14.6 9.6 7.4 12.2 MEAN 9.0 9.7 11.0 12.8 14.2 15.8 15.4 16.1 16.7 14.1 11.1 9.0 12.9 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 5 LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M AVERAGE OF MEAN DAILY TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1986 1.0 2.0 2.3 10.9 14.2 19.1 23.8 21.8 19.1 14.1 4.9 -2.2 10.9 1987 2.7 4.0 4.7 10.8 17.8 21.8 22.4 22.5 18.3 8.8 7.3 2.0 11.9 1988 -1.6 -1.3 5.9 10.6 16.2 21.0 22.3 21.9 18.8 13.5 7.7 2.2 11.4 1989 -6.0 -5.3 5.2 12.7 16.3 22.1 24.6 24.1 19.0 14.5 8.5 3.5 11.6 1990 -3.3 -2.5 4.6 10.8 16.1 21.5 23.3 22.5 21.0 13.1 9.9 2.3 11.6 1991 -2.0 -1.9 4.2 12.6 15.2 20.4 23.6 23.0 18.5 13.7 7.5 -1.7 11.1 1992 -6.0 -2.6 0.7 9.6 11.9 18.9 24.0 20.6 17.2 13.0 8.0 0.5 9.7 1993 -3.1 -0.4 4.0 11.4 14.8 20.4 23.1 22.7 20.0 11.8 3.8 2.2 10.9 1994 1.1 1.4 6.5 12.5 15.5 19.3 23.0 22.9 17.1 12.8 7.2 -0.2 11.6 1995 2.5 3.3 7.2 11.6 15.4 18.7 24.4 25.3 19.5 12.2 7.6 0.5 12.3 1996 -2.2 1.7 2.7 9.7 16.9 19.9 23.7 23.9 21.0 12.7 6.5 4.8 11.8 1997 0.6 -0.6 3.5 11.2 16.1 22.1 24.4 25.5 18.2 15.4 6.7 2.3 12.1 1998 -2.9 -1.7 5.2 12.8 16.1 22.9 23.7 24.5 20.0 13.9 10.4 5.4 12.5 1999 1.1 4.9 6.4 12.1 18.1 22.7 22.4 25.7 19.7 15.0 6.2 3.7 13.2 2000 -0.4 0.5 5.8 14.2 18.5 21.5 24.6 24.5 20.1 11.8 5.5 2.6 12.4 2001 0.7 3.0 9.2 14.2 17.3 21.4 22.7 24.2 20.1 13.9 7.4 4.9 13.3 2002 -0.3 3.2 8.5 11.1 15.8 21.2 24.0 24.0 21.9 17.3 7.9 -1.5 12.8 2003 2.2 2.2 5.2 11.7 15.3 20.3 24.2 23.9 19.1 17.1 6.3 1.1 12.4 MEAN -0.9 0.5 5.1 11.7 16.0 20.8 23.6 23.5 19.4 13.6 7.2 1.8 11.9 SD 2.67 2.74 2.12 1.29 1.53 1.28 0.78 1.38 1.28 1.97 1.59 2.25 1.74 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 6 LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M TEMPERATURE RECORDS LOWEST IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1986 -12.1 -9.2 -9.8 1.0 3.6 7.8 11.2 10.0 5.0 3.2 -4.2 -15.0 -15.0 DAY 25 17 21 6 7 22 2 31 30 29 21 13 1987 -6.6 -6.8 -6.0 -4.2 5.6 10.2 8.5 9.0 5.0 -1.4 -7.4 -11.4 -11.4 DAY 13 12 22 6 1 4 11 29 21 11 30 31 1988 -12.0 -16.2 -5.0 -5.0 3.0 10.6 8.4 8.8 6.6 2.0 -5.8 -14.6 -16.2 DAY 3 7 6 6 7 16 28 26 29 23 15 29 1989 -18.2 -19.1 -6.0 1.4 1.6 9.8 13.4 11.6 3.6 0.0 -4.4 -4.8 -19.1 DAY 30 1 31 2 1 12 31 19 20 23 22 31 1990 -15.2 -12.6 -8.6 -1.7 3.2 8.0 9.0 10.0 8.2 0.4 -3.2 -14.8 -15.2 DAY 12 20 17 3 14 1 6 21 17 19 14 27 1991 -14.6 -14.6 -11.4 1.4 2.0 7.8 10.4 10.4 3.4 3.4 -4.8 -14.6 -14.6 DAY 16 15 11 12 6 4 12 27 28 25 27 19 1992 -19.4 -16.2 -13.6 -2.2 0.0 8.2 9.2 7.8 2.2 -0.6 -7.6 -13.4 -19.4 DAY 28 13 1 2 4 9 12 31 29 8 28 29 1993 -15.2 -11.6 -7.0 1.6 1.0 7.4 11.0 10.8 7.0 -0.6 -8.0 -7.6 -15.2 DAY 20 17 23 10 9 23 7 18 28 8 15 1 1994 -10.8 -7.6 -3.8 -2.6 1.8 6.4 8.2 10.8 5.2 1.0 -2.6 -12.2 -12.2 DAY 24 4 9 5 7 29 2 25 22 12 10 7 1995 -8.6 -5.6 -4.8 1.0 2.4 7.8 13.2 11.2 3.0 -1.6 -7.4 -10.6 -10.6 DAY 21 25 6 7 9 24 6 24 22 18 29 21 1996 -14.6 -12.4 -9.6 -2.8 6.2 7.0 11.8 11.6 8.0 1.2 -5.6 -6.0 -14.6 DAY 22 4 1 4 1 12 16 30 21 28 13 3 1997 -14.6 -13.6 -7.6 -5.0 4.0 10.2 13.0 13.0 4.8 3.4 -2.0 -8.6 -14.6 DAY 29 6 9 12 6 4 8 21 15 26 28 29 1998 -14.2 -15.6 -8.0 0.8 4.0 11.6 10.0 12.0 8.0 1.6 -1.0 -4.6 -15.6 DAY 11 17 3 25 2 4 26 7 28 25 30 23 1999 -8.0 -5.6 -6.6 0.0 2.8 11.0 9.8 12.8 5.0 1.6 -6.2 -9.0 -9.0 DAY 3 5 19 10 22 8 13 31 24 26 30 5 2000 -15.6 -12.0 -7.0 2.6 7.0 6.4 12.8 13.2 8.2 2.6 -2.6 -5.6 -15.6 DAY 18 9 16 1 10 13 23 8 27 30 11 28 2001 -10.6 -7.8 -4.2 3.0 4.6 9.0 12.6 10.6 7.0 0.0 -9.6 -6.6 -10.6 DAY 28 23 11 10 19 2 4 13 21 27 20 22 2002 -12.0 -7.6 -4.2 -0.2 3.6 9.8 11.8 10.0 10.4 4.2 -3.0 -13.0 -13.0 DAY 26 19 11 13 5 7 1 31 30 23 30 15 2003 -7.6 -9.2 -9.0 -2.0 1.8 3.0 13.0 11.0 7.0 7.0 -4.8 -9.4 -9.4 DAY 20 18 2 18 1 6 1 20 21 6 23 12 1986-2003 -19.4 -19.1 -13.6 -5.0 0.0 3.0 8.2 7.8 2.2 -1.6 -9.6 -15.0 -19.4 YEAR-DAY 92-28 89- 1 92- 1 88- 6 92- 4 3- 6 94- 2 92-31 92-29 95-18 1-20 86-13 92 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 7 LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M TEMPERATURE RECORDS HIGHEST IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1986 10.2 14.8 16.0 21.2 27.2 35.8 36.2 36.0 30.8 26.6 20.4 9.4 36.2 DAY 9 28 30 15 31 30 31 1 3 2 1 27 1987 15.2 17.2 15.2 25.4 28.8 34.6 37.2 35.5 32.2 28.6 18.2 11.4 37.2 DAY 31 25 8 17 9 29 19 14 6 2 5 12 1988 5.2 11.8 18.7 23.8 29.4 34.8 36.6 35.8 32.6 25.4 21.0 15.6 36.6 DAY 6 1 20 18 27 13 31 1 10 6 8 5 1989 4.8 7.8 18.2 24.6 30.8 36.0 37.6 36.2 34.8 29.5 20.0 13.3 37.6 DAY 1 28 25 15 25 30 13 9 2 8 29 25 1990 5.8 7.2 16.6 27.8 30.0 33.7 36.8 37.8 34.3 25.8 23.0 19.0 37.8 DAY 5 28 24 27 25 26 27 7 13 4 5 3 1991 7.2 11.3 20.6 25.4 27.3 33.4 37.0 36.2 34.6 24.2 20.8 10.6 37.0 DAY 31 25 30 25 29 30 6 4 1 9 1 4 1992 5.0 6.4 14.4 23.5 27.6 34.2 36.5 34.2 29.2 25.6 20.0 10.1 36.5 DAY 1 20 30 12 30 30 22 24 14 4 20 14 1993 7.4 12.0 20.4 26.4 26.8 36.0 36.7 35.6 33.6 27.8 15.7 13.2 36.7 DAY 28 27 31 19 26 30 2 14 1 1 9 24 1994 14.0 12.2 21.0 26.8 28.8 33.0 38.0 37.6 30.6 23.5 18.4 11.2 38.0 DAY 4 27 31 21 31 10 30 1 12 14 3 2 1995 12.2 13.6 21.0 22.8 26.8 33.4 37.6 38.0 32.6 29.6 20.4 11.6 38.0 DAY 30 21 24 3 21 21 29 5 12 3 1 28 1996 12.4 14.6 18.8 21.4 28.8 33.6 34.2 36.2 33.2 24.8 17.8 17.0 36.2 DAY 1 25 30 29 31 4 18 11 16 26 2 5 1997 14.4 14.0 16.0 28.4 30.0 33.0 39.0 38.4 31.6 28.0 17.0 12.8 39.0 DAY 6 18 22 26 28 27 29 14 1 2 17 7 1998 5.0 12.0 18.2 27.0 29.0 36.8 35.6 37.6 35.5 28.0 20.8 17.6 37.6 DAY 26 7 24 15 8 28 13 29 1 6 6 18 1999 10.8 16.2 19.4 25.8 33.0 35.6 34.8 36.4 33.0 28.8 17.4 17.2 36.4 DAY 5 27 31 30 31 21 22 25 3 1 19 31 2000 16.4 13.8 17.4 24.8 31.8 37.4 37.8 37.6 34.2 24.6 17.2 10.0 37.8 DAY 2 24 29 16 26 22 1 3 8 11 3 31 2001 11.0 16.6 23.2 26.0 31.6 37.2 36.4 37.6 31.6 28.8 23.2 15.4 37.6 DAY 10 28 31 5 15 26 9 2 3 6 6 29 2002 13.4 13.4 21.6 23.4 30.4 34.6 36.4 37.5 34.0 30.0 20.2 10.2 37.5 DAY 3 26 27 28 24 29 17 9 3 9 10 8 2003 15.6 13.0 17.6 27.6 26.8 34.0 38.4 37.4 33.2 28.6 19.6 15.4 38.4 DAY 12 8 7 9 16 22 17 12 6 11 5 18 1986-2003 16.4 17.2 23.2 28.4 33.0 37.4 39.0 38.4 35.5 30.0 23.2 19.0 39.0 YEAR-DAY 0- 2 87-25 1-31 97-26 99-31 0-22 97-29 97-14 98- 1 2- 9 1- 6 90- 3 97 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 8 LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M 0C COOLING DEGREE DAYS (BASE 21) YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1986 0.0 0.0 0.0 0.0 0.0 14.0 93.2 41.9 1.8 0.0 0.0 0.0 150.9 1987 0.0 0.0 0.0 0.0 0.0 35.2 59.4 72.9 3.2 0.0 0.0 0.0 170.7 1988 0.0 0.0 0.0 0.0 0.0 25.5 55.2 48.8 5.6 0.0 0.0 0.0 135.2 1989 0.0 0.0 0.0 0.0 3.0 48.8 110.5 101.1 30.9 0.0 0.0 0.0 294.3 1990 0.0 0.0 0.0 0.0 0.0 37.7 94.8 65.5 18.4 0.0 0.0 0.0 216.5 1991 0.0 0.0 0.0 0.0 0.0 22.6 89.2 67.7 14.2 0.0 0.0 0.0 193.7 1992 0.0 0.0 0.0 0.0 0.0 9.3 107.8 31.2 0.0 0.0 0.0 0.0 148.4 1993 0.0 0.0 0.0 0.0 0.0 25.8 74.2 64.6 16.0 0.0 0.0 0.0 180.7 1994 0.0 0.0 0.0 0.0 0.0 16.1 75.6 65.5 0.2 0.0 0.0 0.0 157.4 1995 0.0 0.0 0.0 0.0 0.0 8.7 107.0 133.9 17.4 0.0 0.0 0.0 267.0 1996 0.0 0.0 0.0 0.0 0.0 16.1 87.6 94.7 28.8 0.0 0.0 0.0 227.2 1997 0.0 0.0 0.0 0.0 1.8 49.5 109.4 139.9 5.6 0.0 0.0 0.0 306.2 1998 0.0 0.0 0.0 0.0 1.1 62.2 85.1 110.4 17.8 0.0 0.0 0.0 276.7 1999 0.0 0.0 0.0 0.0 8.0 61.0 58.6 145.7 20.8 0.0 0.0 0.0 294.1 2000 0.0 0.0 0.0 0.0 2.5 53.6 112.8 108.7 15.4 0.0 0.0 0.0 293.0 2001 0.0 0.0 0.0 0.0 3.0 52.7 61.4 106.5 8.6 0.0 0.0 0.0 232.3 2002 0.0 0.0 0.0 0.0 1.4 35.2 97.3 100.2 32.5 2.7 0.0 0.0 269.3 2003 0.0 0.0 0.0 0.0 0.0 24.5 102.8 92.1 13.2 0.0 0.0 0.0 232.6 MEAN 0.0 0.0 0.0 0.0 1.2 33.3 87.9 88.4 13.9 0.1 0.0 0.0 224.8 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 9 LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M 0C HEATING DEGREE DAYS (BASE 18) YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1986 526.9 447.3 487.5 212.3 121.1 18.3 0.0 0.0 6.0 122.7 394.3 624.7 2961.1 1987 472.8 392.5 413.3 214.6 25.4 0.0 1.0 8.6 25.1 286.2 320.4 496.5 2656.4 1988 606.3 559.8 375.0 221.8 65.8 0.0 3.4 1.7 22.9 134.0 310.1 491.2 2792.1 1989 743.3 653.2 397.8 160.5 76.2 2.1 0.0 0.0 44.4 117.1 286.0 448.4 2929.0 1990 661.6 573.3 416.3 215.9 71.2 3.2 3.9 1.4 0.0 150.5 243.6 486.6 2827.5 1991 618.5 555.9 426.3 161.0 90.0 8.2 1.6 0.0 34.7 134.1 313.5 610.6 2954.3 1992 743.1 597.2 537.2 250.7 185.8 18.2 4.6 13.7 37.1 156.3 301.1 541.7 3386.6 1993 655.1 516.2 432.6 201.6 106.3 8.2 0.1 0.4 12.1 192.9 426.4 489.8 3041.7 1994 523.3 464.1 356.2 167.2 87.1 25.3 0.8 0.0 42.1 160.2 323.1 563.7 2713.0 1995 480.1 412.1 335.7 192.5 87.8 18.6 0.0 0.0 28.6 180.8 311.6 541.3 2589.1 1996 625.7 474.0 474.3 248.4 53.5 12.4 0.0 0.0 5.9 163.0 344.3 409.9 2811.5 1997 540.9 521.6 450.3 208.1 73.8 0.8 0.0 0.0 30.1 83.2 339.7 485.5 2734.0 1998 647.0 551.9 397.4 157.2 74.4 0.0 0.0 0.0 11.9 129.5 228.8 389.9 2587.9 1999 522.8 367.3 358.2 177.0 36.1 1.0 0.4 0.0 24.6 97.4 353.0 442.1 2379.8 2000 570.1 508.7 378.6 114.6 15.4 15.5 0.0 0.0 5.2 190.9 374.0 478.5 2651.5 2001 536.0 421.1 271.7 113.4 48.7 14.0 0.0 0.0 12.9 127.1 316.9 404.9 2266.7 2002 568.1 415.7 294.7 206.0 87.4 1.9 0.0 0.0 0.0 49.3 302.8 603.5 2529.5 2003 490.0 442.3 396.2 194.0 88.7 13.4 0.0 0.0 24.6 37.6 350.3 524.8 2561.9 MEAN 585.1 493.0 400.0 189.8 77.5 8.9 0.9 1.4 20.4 139.6 324.5 501.9 2743.0 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 10 LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M AVERAGE OF DEW POINT TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1986 -7.0 -3.7 -4.9 3.1 4.2 5.4 6.8 5.9 1.8 3.2 -0.2 -6.6 0.7 1987 -5.5 -3.7 -2.4 -1.2 7.8 6.4 7.7 8.9 5.7 2.2 -2.0 -2.9 1.7 1988 -5.5 -5.2 -3.6 2.0 2.7 4.0 10.7 9.3 4.7 1.7 -3.1 -5.3 1.0 1989 -10.8 -11.4 -0.9 0.7 2.9 3.8 8.2 8.0 2.2 0.8 -0.5 -3.3 -0.0 1990 -8.1 -6.8 -4.2 -1.0 0.8 3.5 8.4 7.9 2.5 1.8 -3.3 -6.5 -0.4 1991 -6.2 -7.4 -1.4 1.5 1.7 5.5 7.5 7.9 3.4 3.8 -1.6 -6.0 0.7 1992 -10.3 -8.4 -5.5 -0.3 4.6 7.8 8.7 7.1 2.8 -1.8 -2.4 -4.6 -0.2 1993 -8.7 -6.1 -4.8 0.4 4.7 4.5 8.6 7.2 3.8 -1.1 -0.3 -2.8 0.5 1994 -4.3 -5.9 -2.0 1.9 4.3 5.3 8.4 8.1 2.1 3.6 0.4 -5.7 1.3 1995 -4.9 -4.4 -3.8 1.4 5.3 7.5 8.9 6.4 1.7 -0.6 -6.5 -7.2 0.3 1996 -6.4 -3.7 -2.7 1.3 6.6 7.6 7.7 6.6 2.4 0.9 -3.1 -5.3 1.0 1997 -8.7 -9.8 -5.3 -3.0 1.7 5.3 9.3 6.0 1.5 0.5 -0.1 -3.1 -0.5 1998 -7.4 -7.2 -2.8 0.1 5.5 6.0 7.8 9.0 5.0 -0.3 0.1 -2.5 1.1 1999 -5.2 -5.8 -6.6 -2.0 -0.4 1.5 7.0 6.2 3.5 0.0 -1.9 -4.0 -0.7 2000 -6.7 -8.5 -5.0 -0.0 1.5 2.6 5.3 5.9 5.4 2.5 -0.7 -2.1 0.0 2001 -6.2 -5.7 -3.2 -1.0 0.6 3.2 8.4 6.3 3.3 1.6 -1.6 -1.6 0.3 2002 -6.5 -5.4 -4.8 1.5 2.1 1.8 7.5 6.7 1.2 0.6 -1.6 -5.3 -0.2 2003 -5.3 -5.5 -3.7 1.3 2.4 5.7 9.2 7.9 3.9 1.0 -2.4 -3.8 0.9 MEAN -6.9 -6.4 -3.8 0.4 3.3 4.9 8.1 7.3 3.2 1.1 -1.7 -4.4 0.4 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 11 LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M AVERAGE OF MIXING RATIO IN G/KG YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1986 2.82 3.54 3.30 5.85 6.38 6.88 7.61 7.20 5.39 5.87 4.59 2.89 5.19 1987 3.07 3.55 4.02 4.41 8.03 7.42 8.04 8.78 7.00 5.49 4.11 3.83 5.65 1988 3.10 3.21 3.63 5.67 5.70 6.26 9.84 9.03 6.57 5.36 4.02 3.20 5.47 1989 2.09 2.02 4.36 4.93 5.75 6.18 8.41 8.26 5.52 4.91 4.57 3.68 5.06 1990 2.60 2.82 3.49 4.40 5.19 6.14 8.43 8.20 5.74 5.35 3.71 2.92 4.92 1991 2.97 2.80 4.27 5.22 5.30 6.92 8.00 8.16 6.11 6.13 4.14 3.10 5.26 1992 2.23 2.56 3.27 4.59 6.57 8.14 8.63 7.73 5.74 4.12 4.04 3.42 5.09 1993 2.45 3.04 3.30 4.89 6.55 6.43 8.54 7.81 6.30 4.34 4.64 3.75 5.17 1994 3.43 3.07 4.04 5.43 6.36 6.86 8.41 8.28 5.63 6.12 4.89 3.15 5.47 1995 3.26 3.41 3.67 5.26 6.82 7.93 8.73 7.46 5.30 4.54 3.13 2.73 5.19 1996 2.94 3.57 3.86 5.18 7.45 7.97 8.16 7.53 5.69 5.00 3.74 3.18 5.36 1997 2.47 2.33 3.24 3.87 5.39 6.91 8.95 7.27 5.27 4.86 4.61 3.73 4.91 1998 2.74 2.77 3.90 4.79 6.97 7.13 8.29 8.74 6.80 4.56 4.70 3.84 5.44 1999 3.17 3.10 2.92 4.20 4.62 5.36 7.73 7.36 6.10 4.68 4.06 3.51 4.73 2000 2.88 2.53 3.35 4.88 5.29 5.72 6.95 7.29 6.99 5.53 4.41 3.98 4.98 2001 2.91 3.06 3.76 4.45 5.03 6.07 8.39 7.50 5.96 5.38 4.17 4.22 5.07 2002 2.93 3.10 3.41 5.27 5.47 5.39 7.98 7.78 5.19 4.90 4.21 3.23 4.91 2003 3.14 3.15 3.64 5.23 5.76 7.03 8.98 8.16 6.26 5.03 3.98 3.60 5.33 MEAN 2.84 2.98 3.64 4.92 6.03 6.71 8.34 7.92 5.98 5.12 4.21 3.44 5.18 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 12 LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M AVERAGE OF VAPOUR PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1986 3.79 4.75 4.44 7.83 8.53 9.16 10.14 9.63 7.26 7.90 6.17 3.89 6.96 1987 4.14 4.77 5.38 5.92 10.74 9.90 10.71 11.68 9.37 7.39 5.55 5.16 7.56 1988 4.17 4.30 4.85 7.59 7.63 8.34 13.04 11.99 8.80 7.21 5.41 4.31 7.30 1989 2.81 2.73 5.85 6.62 7.70 8.25 11.19 10.99 7.39 6.61 6.16 4.94 6.77 1990 3.50 3.78 4.70 5.90 6.95 8.20 11.20 10.92 7.68 7.21 5.00 3.94 6.58 1991 4.00 3.77 5.73 7.01 7.09 9.24 10.63 10.86 8.20 8.25 5.59 4.17 7.04 1992 3.00 3.43 4.39 6.15 8.80 10.83 11.46 10.33 7.71 5.55 5.45 4.60 6.81 1993 3.30 4.09 4.44 6.56 8.76 8.59 11.37 10.43 8.44 5.86 6.24 5.07 6.93 1994 4.61 4.12 5.42 7.28 8.52 9.13 11.16 11.00 7.57 8.24 6.57 4.25 7.32 1995 4.39 4.58 4.92 7.04 9.15 10.57 11.57 9.94 7.10 6.13 4.22 3.68 6.94 1996 3.97 4.80 5.17 6.94 9.96 10.62 10.89 10.05 7.62 6.73 5.06 4.29 7.18 1997 3.33 3.14 4.34 5.19 7.22 9.21 11.87 9.69 7.08 6.55 6.22 5.02 6.57 1998 3.69 3.73 5.23 6.43 9.33 9.53 11.02 11.65 9.10 6.16 6.34 5.20 7.28 1999 4.27 4.16 3.92 5.64 6.20 7.16 10.28 9.82 8.17 6.30 5.47 4.75 6.34 2000 3.88 3.41 4.50 6.54 7.07 7.65 9.27 9.73 9.34 7.45 5.95 5.37 6.68 2001 3.93 4.12 5.05 5.97 6.73 8.10 11.16 10.02 7.99 7.24 5.62 5.69 6.80 2002 3.95 4.18 4.58 7.05 7.32 7.21 10.63 10.36 6.98 6.60 5.69 4.35 6.57 2003 4.23 4.22 4.89 7.01 7.72 9.37 11.90 10.88 8.40 6.76 5.37 4.85 7.13 MEAN 3.83 4.00 4.88 6.59 8.08 8.95 11.08 10.56 8.01 6.90 5.67 4.64 6.93 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 13 LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M AVERAGE OF SATURATION DEFICIT PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1986 2.91 2.52 3.01 5.35 8.54 14.57 21.47 19.27 19.81 10.42 2.78 1.57 9.35 1987 3.29 3.38 3.25 7.87 10.67 18.44 18.10 16.44 12.54 5.02 6.06 2.42 8.96 1988 1.65 1.87 4.59 5.55 12.60 18.14 14.21 14.53 13.76 8.67 5.39 3.26 8.69 1989 1.19 1.53 2.98 8.64 12.13 20.44 21.33 20.14 16.33 10.95 5.02 2.83 10.29 1990 1.29 1.50 3.89 7.99 12.69 19.68 18.88 17.72 18.31 8.22 7.29 4.10 10.13 1991 1.34 1.72 2.94 8.02 11.18 15.73 19.84 18.58 14.56 7.32 4.96 1.46 8.97 1992 1.14 1.79 2.28 6.26 5.85 12.09 19.40 14.62 12.89 10.01 5.35 1.68 7.78 1993 1.71 1.95 3.99 7.42 8.98 16.94 17.60 17.73 15.42 8.24 1.70 2.07 8.64 1994 2.19 2.64 4.53 7.62 9.82 14.39 18.61 22.47 14.97 8.10 4.58 2.18 9.34 1995 3.54 3.60 6.84 8.43 10.69 15.08 23.67 28.65 20.51 10.64 8.14 3.29 11.92 1996 1.69 2.54 2.89 6.44 12.31 17.30 22.80 25.25 22.25 10.04 5.56 5.11 11.18 1997 3.86 3.50 4.18 10.75 14.30 22.08 23.86 29.39 18.26 14.05 4.27 2.62 12.59 1998 1.59 2.25 4.75 11.11 11.91 23.63 22.83 23.94 18.37 12.94 8.00 4.60 12.16 1999 2.81 5.57 7.09 10.63 19.36 26.00 21.16 28.53 19.38 13.96 4.80 3.86 13.60 2000 2.61 3.64 6.15 12.24 18.68 23.92 27.16 26.34 18.24 8.23 3.75 2.16 12.76 2001 3.00 4.27 8.59 12.37 14.14 19.63 17.21 21.78 16.69 8.78 5.00 2.78 11.19 2002 2.07 3.53 6.84 6.37 12.03 19.95 20.16 20.64 20.99 13.60 4.97 1.16 11.03 2003 2.88 2.82 3.89 7.48 10.43 15.42 19.32 20.02 14.84 12.94 4.14 1.83 9.67 MEAN 2.27 2.81 4.59 8.36 12.02 18.52 20.42 21.45 17.12 10.12 5.10 2.72 10.46 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 14 LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M AVERAGE OF RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1986 60 70 66 65 57 46 36 38 31 48 74 73 55 1987 59 64 66 49 55 39 43 48 49 67 53 70 55 1988 73 74 57 61 44 36 53 51 45 52 53 63 55 1989 71 66 71 49 44 33 38 40 39 45 59 66 52 1990 74 73 60 50 41 34 43 45 35 53 45 57 51 1991 76 70 71 52 45 42 40 43 43 58 58 76 56 1992 73 67 67 56 66 53 43 48 44 42 55 74 57 1993 68 70 61 54 55 40 44 42 42 47 81 75 57 1994 71 64 60 54 52 46 43 38 38 55 63 68 54 1995 59 60 48 50 51 47 38 31 32 44 37 58 46 1996 74 70 69 59 50 43 36 34 31 46 52 49 51 1997 52 51 56 39 38 35 39 30 35 37 63 69 45 1998 71 65 58 44 49 33 37 37 39 40 51 59 49 1999 63 47 42 40 30 26 38 30 36 39 59 60 43 2000 65 52 48 39 31 29 29 32 40 54 64 73 46 2001 62 55 44 38 39 35 45 37 38 52 60 71 48 2002 69 58 46 58 46 31 39 40 29 39 59 79 49 2003 64 63 60 56 47 43 44 40 43 39 61 74 53 MEAN 67 63 58 51 47 38 40 39 38 48 58 67 51 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 15 LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M AVERAGE OF MAXIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1986 77 88 84 86 84 70 56 58 51 74 87 87 75 1987 77 86 87 73 78 61 65 70 72 84 74 86 76 1988 86 89 82 84 69 57 73 72 65 74 72 80 75 1989 84 82 89 71 64 52 59 61 59 65 78 82 71 1990 86 85 83 75 60 52 63 68 58 76 64 74 70 1991 88 86 88 76 66 63 60 66 66 81 76 88 75 1992 86 82 84 80 88 77 64 67 68 62 77 88 77 1993 82 85 83 77 78 63 66 63 64 68 93 89 76 1994 86 83 83 76 76 68 66 64 59 78 83 84 76 1995 76 81 75 73 74 71 64 55 56 68 58 76 69 1996 86 85 85 80 77 66 55 56 53 71 73 68 71 1997 71 71 77 61 64 60 63 52 60 58 80 85 67 1998 84 79 76 71 74 56 58 60 65 60 70 78 69 1999 81 69 66 67 59 48 60 51 61 58 78 78 65 2000 81 70 73 63 54 50 49 53 65 78 84 89 67 2001 78 79 70 63 64 54 65 57 60 75 81 85 69 2002 85 75 68 79 69 52 59 60 48 57 79 90 68 2003 79 82 82 77 72 66 64 61 66 59 80 87 73 MEAN 82 81 80 74 71 60 62 61 61 69 77 83 72 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION KHORRAMDAREH (40730) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 16 LATITUDE 36 11 N LONGITUDE 49 11 E DATA PROCESSING CENTER ELEVATION 1575.0 M AVERAGE OF MINIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1986 40 50 47 39 31 25 21 23 20 31 58 58 37 1987 39 39 46 26 37 23 25 28 27 53 36 55 36 1988 60 62 34 39 24 19 34 31 25 32 31 42 36 1989 59 50 49 29 26 17 22 22 19 27 37 45 34 1990 58 60 37 28 24 19 26 25 16 28 24 40 32 1991 60 52 53 31 28 24 24 23 23 33 36 59 37 1992 60 51 48 35 45 31 24 29 21 22 32 53 38 1993 54 50 39 33 35 22 26 25 21 27 63 57 38 1994 53 45 38 32 29 26 25 23 24 39 47 52 36 1995 43 43 29 36 36 34 24 17 19 29 22 41 31 1996 61 57 55 44 35 30 23 21 18