STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.5 6.9 10.4 14.9 21.3 27.1 31.6 31.2 25.5 19.0 12.8 4.7 17.6 MINIMUN AIR TEMPERATURE (C) -1.2 -0.4 2.0 5.9 9.9 12.5 16.9 16.5 12.6 6.5 1.3 -2.1 6.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 3 0 0 0 0 0 3 DAYS WITH MINIMUM TEMP. <=-4 7 2 0 0 0 0 0 0 0 0 5 8 22 DAYS WITH FREEZING MIN.<= 0 23 18 13 0 0 0 0 0 0 0 10 25 89 TEMPERATURE RECORDS LOWEST(C) -7.0 -4.2 -2.0 1.0 4.0 10.0 11.0 14.0 8.0 1.0 -8.0 -7.2 -8.0 DAY 23 10 1 7 10 1 1 23 30 16 27 21 MAXIMUM AIR TEMPERATURE (C) 12.4 11.7 15.2 19.9 26.5 32.5 37.5 37.2 31.9 25.3 19.7 9.8 23.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 5 25 31 31 23 2 0 0 117 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.0 16.0 20.0 23.6 30.0 36.0 41.0 38.4 37.8 30.0 24.0 13.6 41.0 DAY 4 3 24 3 18 13 18 25 1 1 1 30 DIF. BETWEEN (MAX.-MIN.) (C) 13.6 12.1 13.2 14.0 16.6 20.0 20.6 20.7 19.3 18.8 18.4 11.9 16.6 MEAN DAILY TEMP. (MDT) (C) 5.6 5.7 8.6 12.9 18.2 22.5 27.2 26.9 22.2 15.9 10.5 3.9 15.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 3.0 54.7 192.7 181.7 53.3 0.0 0.0 0.0 485.5 HEATING DEG. DAYS(BASE 18 0C) 384.3 345.1 291.4 152.3 25.5 0.0 0.0 0.0 0.2 72.0 224.8 437.7 1933.5 DEWPOINT (MEAN C) ***** -2.4 -0.3 2.6 7.9 5.2 10.6 5.1 3.8 1.5 -3.2 -2.7 ***** MIXING RATIO (G/KG) ****** 3.96 4.64 5.72 8.12 6.76 10.01 6.89 6.27 5.24 3.82 3.82 ****** VAPOUR PRESSURE (HPA) ****** 5.31 6.22 7.65 10.83 8.99 13.17 9.15 8.38 7.04 5.15 5.15 ****** SATURATION DEF. (HPA) ****** 5.06 6.90 9.94 15.57 28.60 35.56 38.54 26.42 16.49 10.99 3.74 ****** RELATIVE HUMIDITY (MEAN %) *** 56 52 48 45 27 29 22 27 34 35 62 *** RELATIVE HUMIDITY (MAX. %) *** 79 76 74 68 45 45 38 42 51 54 81 *** RELATIVE HUMIDITY (MIN. %) *** 38 35 30 31 18 21 14 18 23 22 42 *** RELATIVE HUMIDITY (MEAN% 03UTC) *** 76 76 73 68 45 45 37 40 50 53 80 *** RELATIVE HUMIDITY (MEAN% 09UTC) *** 44 41 36 34 20 23 16 20 26 27 52 *** RELATIVE HUMIDITY (MEAN% 15UTC) *** 55 48 48 42 23 27 18 25 31 34 66 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 55.6 121.5 32.6 73.6 9.6 0.0 0.0 0.0 0.0 2.0 0.0 97.0 391.9 DAYS WITH PRECIPITATION >=10 3 5 1 2 0 0 0 0 0 0 0 4 15 DAYS WITH PRECIPITATION >= 5 3 5 4 4 0 0 0 0 0 0 0 4 20 DAYS WITH PRECIPITATION >= 1 5 8 5 10 4 0 0 0 0 1 0 5 38 DAYS WITH PRECIPITATION 5 8 6 11 5 0 0 0 0 1 0 5 41 GREATEST DAILY PRECIPITATION 27.6 41.0 10.0 35.0 4.0 0.0 0.0 0.0 0.0 2.0 0.0 34.0 41.0 DAY 13 6 21 23 30 ** ** ** ** 22 ** 12 DAY WITH THUNDER STORM 0 1 0 1 0 0 0 0 0 1 0 0 3 DAYS WITH SNOW OR SLEET 0 3 0 0 0 0 0 0 0 0 0 1 4 DAYS WITH DUST 0 1 0 0 0 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 270 270 270 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 4.9 7.7 7.0 6.7 8.0 6.4 6.7 5.5 5.4 5.0 7.4 3.7 6.2 PREVAILING WIND PERCENT 12.3 12.9 27.1 30.7 13.5 34.0 26.5 33.5 32.0 32.3 19.3 4.5 23.2 CALMS PERCENT OF WIND 81.3 72.9 61.9 68.0 71.6 57.3 58.7 57.4 58.7 52.9 70.7 94.8 67.2 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 253 233 270 268 258 281 281 278 251 252 254 259 263 VECTOR WIND MAGNITUDE(KNOTS) 0.8 1.4 2.5 2.0 1.6 2.3 1.8 1.8 2.1 1.8 1.9 0.2 1.6 WIND STEADINESES (MEAN %) 88.9 60.9 92.6 95.2 69.6 85.2 60.0 75.0 75.0 62.1 90.5 100.0 72.7 WIND SPEED (MEAN KNOTS) 0.9 2.3 2.7 2.1 2.3 2.7 3.0 2.4 2.8 2.9 2.1 0.2 2.2 FASTEST WIND DIRECTION 140 180 240 280 280 270 240 250 240 90 260 270 240 FASTEST WIND SPEED (KNOTS) 10 17 16 16 17 17 19 16 29 29 16 8 29 DAY 14 8 10 3 26 22 7 22 21 21 8 14 DAYS WITH SKY CLEAR (0-2)/8 19 11 16 11 15 29 28 29 28 26 21 12 245 DAYS WITH P.CLOUDY (3-6)/8 7 10 9 13 14 1 3 2 2 5 9 12 87 DAYS WITH CLOUDY (7-8)/8 5 7 6 6 2 0 0 0 0 0 0 7 33 DAYS WITH VISIBILITY =< 2 KM 0 1 0 2 0 0 0 0 0 0 0 2 5 DURATION OF SUNSHINE HOURS 225.3 188.1 235.2 ****** ****** ****** 323.5 363.0 327.0 304.8 264.9 177.3 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 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 ****** 840.0 840.2 840.2 840.9 836.9 832.8 836.3 839.9 843.4 843.7 843.4 ****** MAX. QFE PRESSURE IN HPA ****** 845.6 846.0 845.7 845.6 843.5 837.6 840.8 845.2 849.6 848.9 847.3 ****** DAY-HOUR **-** 1- 6 3- 6 11- 6 27- 6 2-15 4- 3 25- 6 13- 6 25- 6 15- 6 23- 6 MIN. QFE PRESSURE IN HPA ****** 833.4 834.2 834.6 835.5 833.6 828.8 831.8 834.5 838.4 837.9 838.0 ****** DAY-HOUR **-** 23- 9 14-12 24-15 15-12 18-12 17-12 8-15 4-15 15-12 6-12 12- 9 MEAN QNH PRESSURE IN HPA ****** 1016.2 1016.4 1016.3 1017.2 1012.6 1007.7 1011.8 1016.0 1020.1 1020.5 1020.1 ****** MAX. QNH PRESSURE IN HPA ****** 1022.7 1023.1 1022.8 1022.7 1020.2 1013.3 1017.1 1022.2 1027.3 1026.5 1024.7 ****** DAY-HOUR **-** 1- 6 3- 6 11- 6 27- 6 2-15 4- 3 25- 6 13- 6 25- 6 15- 6 23- 6 MIN. QNH PRESSURE IN HPA ****** 1008.4 1009.4 1009.8 1010.9 1008.7 1003.1 1006.6 1009.7 1014.3 1013.7 1013.8 ****** DAY-HOUR **-** 23- 9 14-12 24-15 15-12 18-12 17-12 8-15 4-15 15-12 6-12 12- 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 ****** 840.4 840.8 840.7 841.5 837.7 833.8 837.3 840.6 844.1 844.4 844.0 ****** MAX. QFE PRESSURE IN HPA ****** 844.7 845.1 844.9 845.2 842.0 837.6 840.0 844.6 848.6 848.0 846.8 ****** DAY ** 1 3 11 26 2 4 25 13 27 15 19 MIN. QFE PRESSURE IN HPA ****** 836.1 835.1 836.0 837.8 835.0 830.5 835.0 837.1 840.4 840.2 839.2 ****** DAY ** 5 14 24 15 14 17 8 1 14 7 12 MEAN QNH PRESSURE IN HPA ****** 1016.6 1017.0 1016.9 1017.9 1013.4 1008.9 1013.0 1016.9 1020.9 1021.3 1020.8 ****** MAX. QNH PRESSURE IN HPA ****** 1021.6 1022.1 1021.9 1022.2 1018.5 1013.3 1016.1 1021.5 1026.2 1025.5 1024.1 ****** DAY ** 1 3 11 26 2 4 25 13 27 15 19 MIN. QNH PRESSURE IN HPA ****** 1011.6 1010.4 1011.5 1013.6 1010.3 1005.0 1010.3 1012.8 1016.6 1016.4 1015.2 ****** DAY ** 5 14 24 15 14 17 8 1 14 7 12 MEAN QFF PRESSURE IN HPA ****** 1016.9 1015.2 1011.7 1008.9 1001.2 994.0 998.8 1006.4 1014.9 1019.3 1023.2 ****** MAX. QFF PRESSURE IN HPA ****** 1021.7 1021.9 1018.8 1013.2 1008.5 998.6 1002.5 1010.8 1021.7 1027.8 1028.2 ****** DAY ** 2 4 13 26 2 4 11 12 26 30 19 MIN. QFF PRESSURE IN HPA ****** 1007.7 1006.6 1005.1 1005.2 996.8 988.4 995.0 999.3 1009.6 1012.7 1015.8 ****** DAY ** 5 14 23 16 14 21 8 4 13 7 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 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 ****** 841.3 841.4 841.2 841.9 837.7 833.7 837.6 841.0 844.8 845.1 844.6 ****** MAX. QFE PRESSURE IN HPA ****** 845.6 846.0 845.7 845.6 842.2 837.4 840.8 845.2 849.6 848.9 847.3 ****** DAY ** 1 3 11 27 7 4 25 13 25 15 23 MIN. QFE PRESSURE IN HPA ****** 835.0 836.4 835.5 837.8 835.0 830.3 835.1 837.8 841.0 840.3 839.2 ****** DAY ** 23 14 24 15 14 17 3 4 14 6 12 MEAN QNH PRESSURE IN HPA ****** 1017.6 1017.8 1017.5 1018.3 1013.4 1008.8 1013.4 1017.3 1021.7 1022.1 1021.6 ****** MAX. QNH PRESSURE IN HPA ****** 1022.7 1023.1 1022.8 1022.7 1018.7 1013.1 1017.1 1022.2 1027.3 1026.5 1024.7 ****** DAY ** 1 3 11 27 7 4 25 13 25 15 23 MIN. QNH PRESSURE IN HPA ****** 1010.3 1011.9 1010.9 1013.6 1010.3 1004.8 1010.4 1013.6 1017.3 1016.5 1015.2 ****** DAY ** 23 14 24 15 14 17 3 4 14 6 12 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 ****** 839.8 840.1 840.3 840.9 837.0 832.8 836.4 839.9 843.2 843.3 843.0 ****** MAX. QFE PRESSURE IN HPA ****** 844.8 844.3 844.5 845.0 841.6 835.8 839.2 844.0 847.3 847.4 845.8 ****** DAY ** 1 3 11 2 7 4 25 13 25 15 18 MIN. QFE PRESSURE IN HPA ****** 833.4 835.0 835.0 837.0 834.1 829.4 834.0 836.7 839.8 838.5 838.0 ****** DAY ** 23 14 24 15 13 17 3 4 14 6 12 MEAN QNH PRESSURE IN HPA ****** 1015.9 1016.3 1016.5 1017.2 1012.6 1007.8 1012.0 1016.0 1019.9 1020.0 1019.6 ****** MAX. QNH PRESSURE IN HPA ****** 1021.7 1021.2 1021.4 1022.0 1018.0 1011.2 1015.2 1020.8 1024.7 1024.8 1022.9 ****** DAY ** 1 3 11 2 7 4 25 13 25 15 18 MIN. QNH PRESSURE IN HPA ****** 1008.4 1010.3 1010.3 1012.6 1009.2 1003.8 1009.1 1012.3 1015.9 1014.4 1013.8 ****** DAY ** 23 14 24 15 13 17 3 4 14 6 12 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 ****** 839.0 839.1 839.2 840.0 836.1 831.8 835.1 838.8 842.2 842.5 842.3 ****** MAX. QFE PRESSURE IN HPA ****** 844.1 843.1 843.7 844.8 841.0 834.9 837.5 842.8 846.4 846.4 845.2 ****** DAY ** 1 3 12 28 2 4 25 12 24 15 23 MIN. QFE PRESSURE IN HPA ****** 834.2 834.2 835.0 835.5 833.6 828.8 832.3 835.6 838.4 837.9 838.8 ****** DAY ** 23 14 24 15 18 17 8 4 15 6 12 MEAN QNH PRESSURE IN HPA ****** 1015.0 1015.1 1015.2 1016.1 1011.6 1006.5 1010.4 1014.8 1018.7 1019.0 1018.8 ****** MAX. QNH PRESSURE IN HPA ****** 1020.9 1019.8 1020.5 1021.7 1017.3 1010.2 1013.2 1019.4 1023.6 1023.6 1022.2 ****** DAY ** 1 3 12 28 2 4 25 12 24 15 23 MIN. QNH PRESSURE IN HPA ****** 1009.4 1009.4 1010.3 1010.9 1008.7 1003.1 1007.1 1011.0 1014.3 1013.7 1014.7 ****** DAY ** 23 14 24 15 18 17 8 4 15 6 12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 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 ****** 839.7 839.8 839.6 840.2 836.3 832.0 835.2 839.2 842.8 843.3 843.3 ****** MAX. QFE PRESSURE IN HPA ****** 844.6 843.8 844.1 844.0 843.5 835.0 838.0 843.4 847.5 846.7 847.0 ****** DAY ** 1 2 12 3 2 4 11 13 24 15 23 MIN. QFE PRESSURE IN HPA ****** 835.4 835.0 834.6 835.6 833.7 828.9 831.8 834.5 839.0 838.7 839.2 ****** DAY ** 23 14 24 15 13 20 8 4 14 6 11 MEAN QNH PRESSURE IN HPA ****** 1015.8 1015.9 1015.7 1016.3 1011.9 1006.8 1010.6 1015.2 1019.4 1019.9 1020.0 ****** MAX. QNH PRESSURE IN HPA ****** 1021.5 1020.6 1020.9 1020.8 1020.2 1010.3 1013.8 1020.1 1024.9 1024.0 1024.3 ****** DAY ** 1 2 12 3 2 4 11 13 24 15 23 MIN. QNH PRESSURE IN HPA ****** 1010.8 1010.3 1009.8 1011.0 1008.8 1003.2 1006.6 1009.7 1015.0 1014.6 1015.2 ****** DAY ** 23 14 24 15 13 20 8 4 14 6 11 MEAN QFF PRESSURE IN HPA ****** 1016.0 1013.9 1010.3 1007.2 999.5 991.6 996.2 1004.6 1013.3 1017.9 1022.4 ****** MAX. QFF PRESSURE IN HPA ****** 1021.4 1020.3 1017.0 1012.8 1011.7 995.7 1000.5 1009.1 1020.8 1025.8 1028.9 ****** DAY ** 10 3 12 3 2 4 11 29 24 29 23 MIN. QFF PRESSURE IN HPA ****** 1010.9 1006.4 1005.3 1002.6 995.1 986.0 990.8 996.3 1008.0 1010.4 1015.2 ****** DAY ** 23 14 24 15 18 20 8 4 1 6 11 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 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.3 6.3 8.7 15.5 22.3 28.6 29.9 29.7 25.9 18.7 12.2 7.9 17.3 MINIMUN AIR TEMPERATURE (C) -5.0 0.2 2.3 6.6 10.8 14.5 19.3 18.1 12.4 6.7 2.6 -0.2 7.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 9 7 0 0 0 0 17 DAYS WITH MINIMUM TEMP. <=-4 15 1 0 0 0 0 0 0 0 0 0 0 16 DAYS WITH FREEZING MIN.<= 0 27 18 11 0 0 0 0 0 0 0 7 20 83 TEMPERATURE RECORDS LOWEST(C) -15.0 -4.4 -2.2 1.6 7.0 6.4 14.2 13.2 8.0 2.4 -2.2 -3.4 -15.0 DAY 26 6 9 28 12 7 17 25 21 18 12 17 MAXIMUM AIR TEMPERATURE (C) 6.3 11.4 13.1 20.8 27.5 34.4 35.0 35.6 32.7 25.1 18.2 13.9 22.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 8 30 31 31 28 3 0 0 131 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 13.0 19.0 20.6 26.0 35.0 36.4 37.0 37.4 36.0 32.0 24.0 19.0 37.4 DAY 4 9 30 23 31 23 31 22 13 1 5 6 DIF. BETWEEN (MAX.-MIN.) (C) 11.3 11.2 10.8 14.2 16.7 19.9 15.7 17.5 20.3 18.4 15.6 14.1 15.4 MEAN DAILY TEMP. (MDT) (C) 0.6 5.8 7.7 13.7 19.2 24.4 27.1 26.8 22.6 15.9 10.4 6.9 15.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 6.7 105.0 190.6 180.8 52.4 3.6 0.0 0.0 539.2 HEATING DEG. DAYS(BASE 18 0C) 538.0 353.7 318.6 130.7 13.3 0.0 0.0 0.0 0.0 83.0 227.9 345.5 2010.8 DEWPOINT (MEAN C) -5.7 -2.6 -1.0 1.8 6.3 7.4 3.5 2.9 1.2 -0.4 -2.4 -1.9 0.8 MIXING RATIO (G/KG) 3.16 3.85 4.44 5.35 7.25 7.96 6.08 5.80 5.07 4.53 3.99 4.08 5.13 VAPOUR PRESSURE (HPA) 4.26 5.17 5.94 7.17 9.68 10.57 8.09 7.73 6.78 6.08 5.37 5.50 6.86 SATURATION DEF. (HPA) 2.90 4.84 5.79 11.35 18.86 30.87 35.61 35.78 28.98 17.04 9.68 5.65 17.28 RELATIVE HUMIDITY (MEAN %) 62 57 55 44 39 28 20 20 22 30 41 55 39 RELATIVE HUMIDITY (MAX. %) 78 76 80 72 63 41 35 36 40 49 60 79 59 RELATIVE HUMIDITY (MIN. %) 46 40 37 29 26 20 13 12 12 19 27 36 26 RELATIVE HUMIDITY (MEAN% 03UTC) 76 74 76 71 63 41 35 36 40 49 59 79 58 RELATIVE HUMIDITY (MEAN% 09UTC) 54 49 47 34 31 23 15 15 15 22 33 44 32 RELATIVE HUMIDITY (MEAN% 15UTC) 65 51 46 36 32 23 18 17 19 28 39 53 36 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 163.0 103.0 139.0 109.4 15.0 0.0 0.3 0.0 0.0 3.4 17.6 46.2 596.9 DAYS WITH PRECIPITATION >=10 3 3 4 4 0 0 0 0 0 0 0 1 15 DAYS WITH PRECIPITATION >= 5 5 8 8 4 2 0 0 0 0 0 2 4 33 DAYS WITH PRECIPITATION >= 1 8 10 13 7 4 0 0 0 0 1 4 5 52 DAYS WITH PRECIPITATION 8 10 13 8 4 0 3 2 0 2 6 5 61 GREATEST DAILY PRECIPITATION 62.0 30.0 44.0 45.0 6.0 0.0 0.3 0.0 0.0 3.0 8.0 18.0 62.0 DAY 17 5 12 15 11 ** 6 ** ** 10 29 23 DAY WITH THUNDER STORM 0 0 4 1 1 0 0 1 0 0 0 0 7 DAYS WITH SNOW OR SLEET 5 0 2 0 0 0 0 0 0 0 0 1 8 DAYS WITH DUST 0 0 0 0 0 1 0 3 1 2 0 0 7 WIND DIRECTION (PREVAILING) 270 225 270 270 270 270 90 270 270 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 2.5 7.3 6.7 7.0 7.1 7.7 12.3 9.9 10.4 10.2 9.0 9.4 8.3 PREVAILING WIND PERCENT 2.6 22.1 20.6 30.7 29.0 26.0 18.7 23.2 26.7 24.5 20.0 11.6 20.1 CALMS PERCENT OF WIND 97.4 57.9 51.6 54.0 56.8 64.0 33.5 37.4 48.0 58.1 68.7 81.3 59.1 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 264 234 233 250 257 256 56 319 275 278 267 269 266 VECTOR WIND MAGNITUDE(KNOTS) 0.1 2.7 2.5 2.6 2.5 2.4 3.1 1.4 4.5 3.4 2.4 1.2 1.8 WIND STEADINESES (MEAN %) 100.0 90.0 71.4 83.9 86.2 82.8 43.7 21.2 80.4 69.4 80.0 70.6 48.6 WIND SPEED (MEAN KNOTS) 0.1 3.0 3.5 3.1 2.9 2.9 7.1 6.6 5.6 4.9 3.0 1.7 3.7 FASTEST WIND DIRECTION 260 210 120 250 260 230 90 90 280 210 210 280 210 FASTEST WIND SPEED (KNOTS) 4 23 25 17 17 19 23 27 27 29 19 17 29 DAY 6 6 24 10 6 27 4 21 8 15 8 14 DAYS WITH SKY CLEAR (0-2)/8 15 11 11 16 17 26 21 24 27 27 17 13 225 DAYS WITH P.CLOUDY (3-6)/8 8 11 12 8 11 4 10 6 1 4 9 17 101 DAYS WITH CLOUDY (7-8)/8 8 7 8 6 3 0 0 1 2 0 4 1 40 DAYS WITH VISIBILITY =< 2 KM 4 0 1 0 1 0 0 0 0 0 0 0 6 DURATION OF SUNSHINE HOURS 171.5 178.6 191.2 268.7 316.1 368.7 337.2 342.2 310.2 309.7 210.2 227.8 3232.1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 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 842.2 840.6 838.4 841.1 841.0 836.7 836.1 836.8 838.6 842.5 843.8 844.4 840.2 MAX. QFE PRESSURE IN HPA 848.8 847.8 844.4 846.2 846.0 842.0 841.7 842.0 845.5 847.3 849.9 849.5 849.9 DAY-HOUR 26- 6 8- 6 29- 3 8- 6 17- 6 3- 6 4- 6 31- 6 25- 6 13- 6 16- 6 28- 6 MIN. QFE PRESSURE IN HPA 831.2 832.0 833.0 836.8 836.8 832.0 831.2 832.3 833.2 836.1 839.0 840.2 831.2 DAY-HOUR 12-12 5- 3 7-12 4-12 29-12 19-12 6-12 7-12 20-12 5-12 1-12 15- 3 MEAN QNH PRESSURE IN HPA 1018.7 1016.8 1014.2 1017.5 1017.3 1012.2 1011.6 1012.4 1014.5 1019.0 1020.6 1021.3 1016.3 MAX. QNH PRESSURE IN HPA 1026.4 1025.2 1021.3 1023.4 1023.1 1018.5 1018.1 1018.5 1022.6 1024.7 1027.7 1027.2 1027.7 DAY-HOUR 26- 6 8- 6 29- 3 8- 6 17- 6 3- 6 4- 6 31- 6 25- 6 13- 6 16- 6 28- 6 MIN. QNH PRESSURE IN HPA 1005.9 1006.8 1008.0 1012.4 1012.4 1006.8 1005.9 1007.1 1008.2 1011.6 1015.0 1016.4 1005.9 DAY-HOUR 12-12 5- 3 7-12 4-12 29-12 19-12 6-12 7-12 20-12 5-12 1-12 15- 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 842.4 840.8 838.6 841.5 841.6 837.6 837.2 837.8 839.5 843.3 844.5 845.0 840.8 MAX. QFE PRESSURE IN HPA 848.2 846.5 844.4 846.0 845.3 841.8 841.5 841.3 845.1 846.2 849.4 848.3 849.4 DAY 27 8 29 8 17 3 4 30 25 13 19 8 MIN. QFE PRESSURE IN HPA 832.0 832.0 834.6 838.0 838.1 834.8 833.9 835.1 835.8 838.1 840.8 840.2 832.0 DAY 12 5 13 3 29 20 12 8 21 5 29 15 MEAN QNH PRESSURE IN HPA 1018.9 1017.1 1014.5 1017.9 1018.0 1013.4 1012.8 1013.6 1015.6 1019.9 1021.4 1021.9 1017.1 MAX. QNH PRESSURE IN HPA 1025.7 1023.7 1021.3 1023.1 1022.3 1018.2 1017.9 1017.7 1022.1 1023.4 1027.1 1025.8 1027.1 DAY 27 8 29 8 17 3 4 30 25 13 19 8 MIN. QNH PRESSURE IN HPA 1006.8 1006.8 1009.8 1013.8 1013.9 1010.1 1009.0 1010.4 1011.2 1013.9 1017.1 1016.4 1006.8 DAY 12 5 13 3 29 20 12 8 21 5 29 15 MEAN QFF PRESSURE IN HPA 1023.5 1017.3 1013.0 1012.5 1008.5 1000.4 998.6 999.8 1005.0 1013.7 1019.0 1022.0 1011.1 MAX. QFF PRESSURE IN HPA 1037.0 1024.2 1022.4 1018.1 1013.2 1007.4 1004.6 1004.8 1012.2 1019.3 1025.3 1025.6 1037.0 DAY 26 8 29 8 12 8 4 31 25 20 19 28 MIN. QFF PRESSURE IN HPA 1008.7 1008.4 1007.8 1006.9 1001.2 996.2 994.8 996.1 1001.4 1006.3 1013.7 1014.8 994.8 DAY 12 5 23 10 29 25 14 14 22 5 28 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 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 843.5 841.9 839.4 842.3 841.9 837.6 837.4 838.2 840.0 843.9 845.0 845.7 841.4 MAX. QFE PRESSURE IN HPA 848.8 847.8 844.4 846.2 846.0 842.0 841.7 842.0 845.5 847.3 849.9 849.5 849.9 DAY 26 8 29 8 17 3 4 31 25 13 16 28 MIN. QFE PRESSURE IN HPA 833.8 834.4 835.0 838.4 837.9 834.3 833.9 835.2 836.1 839.0 841.2 841.8 833.8 DAY 12 5 7 3 29 20 6 8 21 5 28 15 MEAN QNH PRESSURE IN HPA 1020.2 1018.3 1015.5 1018.8 1018.4 1013.3 1013.1 1014.1 1016.1 1020.7 1022.0 1022.8 1017.8 MAX. QNH PRESSURE IN HPA 1026.4 1025.2 1021.3 1023.4 1023.1 1018.5 1018.1 1018.5 1022.6 1024.7 1027.7 1027.2 1027.7 DAY 26 8 29 8 17 3 4 31 25 13 16 28 MIN. QNH PRESSURE IN HPA 1008.9 1009.6 1010.3 1014.3 1013.7 1009.5 1009.0 1010.5 1011.6 1015.0 1017.5 1018.2 1008.9 DAY 12 5 7 3 29 20 6 8 21 5 28 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 842.0 840.5 838.6 841.2 841.2 836.5 836.3 837.0 838.6 842.2 843.6 844.3 840.2 MAX. QFE PRESSURE IN HPA 847.6 847.0 843.0 844.2 845.0 840.8 841.0 840.5 843.6 845.2 848.7 847.6 848.7 DAY 26 8 29 8 17 3 3 31 25 13 16 28 MIN. QFE PRESSURE IN HPA 831.8 835.0 834.0 837.6 837.8 832.8 832.5 833.4 834.5 837.0 840.1 840.4 831.8 DAY 12 5 7 18 29 19 6 8 21 5 28 15 MEAN QNH PRESSURE IN HPA 1018.5 1016.7 1014.5 1017.6 1017.5 1012.1 1011.8 1012.7 1014.5 1018.7 1020.4 1021.1 1016.3 MAX. QNH PRESSURE IN HPA 1025.0 1024.3 1019.6 1021.0 1022.0 1017.1 1017.3 1016.7 1020.3 1022.2 1026.3 1025.0 1026.3 DAY 26 8 29 8 17 3 3 31 25 13 16 28 MIN. QNH PRESSURE IN HPA 1006.6 1010.3 1009.1 1013.3 1013.6 1007.7 1007.4 1008.4 1009.7 1012.6 1016.2 1016.6 1006.6 DAY 12 5 7 18 29 19 6 8 21 5 28 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 841.2 839.5 837.4 840.2 840.2 835.6 834.9 835.6 837.4 841.2 842.6 843.3 839.1 MAX. QFE PRESSURE IN HPA 846.0 845.4 842.4 845.0 844.2 839.3 839.8 838.8 843.4 844.0 847.9 846.3 847.9 DAY 25 8 28 8 6 3 3 31 25 13 16 4 MIN. QFE PRESSURE IN HPA 831.2 835.0 833.0 836.8 836.8 832.0 831.2 832.3 833.2 836.1 839.0 840.2 831.2 DAY 12 5 7 4 29 19 6 7 20 5 1 15 MEAN QNH PRESSURE IN HPA 1017.6 1015.5 1013.1 1016.4 1016.4 1011.0 1010.2 1011.0 1013.1 1017.5 1019.1 1019.9 1015.1 MAX. QNH PRESSURE IN HPA 1023.1 1022.4 1018.9 1022.0 1021.0 1015.3 1015.9 1014.7 1020.1 1020.8 1025.4 1023.5 1025.4 DAY 25 8 28 8 6 3 3 31 25 13 16 4 MIN. QNH PRESSURE IN HPA 1005.9 1010.3 1008.0 1012.4 1012.4 1006.8 1005.9 1007.1 1008.2 1011.6 1015.0 1016.4 1005.9 DAY 12 5 7 4 29 19 6 7 20 5 1 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 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 842.0 840.2 837.9 840.5 840.3 836.1 834.7 835.6 837.7 841.7 843.3 844.0 839.5 MAX. QFE PRESSURE IN HPA 847.0 845.8 843.8 845.8 844.0 839.8 839.5 839.3 842.2 844.7 848.4 847.3 848.4 DAY 25 8 28 8 7 3 3 30 25 13 15 28 MIN. QFE PRESSURE IN HPA 832.8 835.9 834.2 837.0 837.0 833.2 831.6 832.3 834.3 837.2 840.1 841.5 831.6 DAY 12 16 7 4 29 19 6 7 20 5 29 15 MEAN QNH PRESSURE IN HPA 1018.5 1016.3 1013.7 1016.7 1016.5 1011.6 1010.0 1011.1 1013.4 1018.2 1020.0 1020.7 1015.6 MAX. QNH PRESSURE IN HPA 1024.3 1022.9 1020.6 1022.9 1020.8 1015.9 1015.6 1015.3 1018.7 1021.6 1025.9 1024.7 1025.9 DAY 25 8 28 8 7 3 3 30 25 13 15 28 MIN. QNH PRESSURE IN HPA 1007.7 1011.3 1009.4 1012.6 1012.6 1008.2 1006.3 1007.1 1009.5 1012.9 1016.2 1017.9 1006.3 DAY 12 16 7 4 29 19 6 7 20 5 29 15 MEAN QFF PRESSURE IN HPA 1023.1 1016.4 1012.0 1011.3 1006.8 998.3 995.7 997.3 1002.7 1011.9 1017.6 1020.7 1009.5 MAX. QFF PRESSURE IN HPA 1035.3 1023.7 1021.3 1018.1 1013.5 1006.0 1001.7 1001.9 1008.5 1017.3 1023.9 1024.2 1035.3 DAY 26 8 28 8 7 7 3 27 30 20 15 28 MIN. QFF PRESSURE IN HPA 1011.4 1010.4 1007.1 1005.1 999.7 993.3 991.7 992.9 999.0 1004.6 1013.1 1016.7 991.7 DAY 12 10 7 10 29 18 14 3 15 4 1 10 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 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.6 5.9 6.9 14.3 21.1 26.9 31.1 30.8 25.0 19.3 10.3 4.1 16.7 MINIMUN AIR TEMPERATURE (C) -2.4 -3.5 0.3 5.5 8.8 13.7 17.4 17.1 11.0 8.8 2.8 -2.6 6.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 2 0 0 0 0 0 3 DAYS WITH MINIMUM TEMP. <=-4 11 17 2 0 0 0 0 0 0 0 0 8 38 DAYS WITH FREEZING MIN.<= 0 25 22 18 3 0 0 0 0 0 0 6 27 101 TEMPERATURE RECORDS LOWEST(C) -7.0 -9.0 -7.0 -3.5 2.0 7.8 12.8 14.0 7.4 2.8 -1.4 -12.6 -12.6 DAY 20 8 1 12 6 3 2 31 10 27 30 24 MAXIMUM AIR TEMPERATURE (C) 9.7 11.8 11.9 19.6 26.3 32.5 37.3 37.7 31.6 25.5 15.8 9.4 22.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 5 27 31 31 27 1 0 0 122 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 15.0 19.4 19.0 27.2 31.5 36.4 41.2 39.4 34.6 30.6 19.8 15.6 41.2 DAY 7 21 4 27 31 29 28 13 6 6 2 8 DIF. BETWEEN (MAX.-MIN.) (C) 12.1 15.3 11.6 14.1 17.5 18.8 19.9 20.6 20.6 16.7 13.0 12.0 16.0 MEAN DAILY TEMP. (MDT) (C) 3.7 4.2 6.1 12.5 17.6 23.1 27.4 27.4 21.3 17.1 9.3 3.4 14.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.5 70.5 196.9 198.2 22.1 0.8 0.0 0.0 491.2 HEATING DEG. DAYS(BASE 18 0C) 444.2 387.4 369.8 164.5 40.5 0.0 0.0 0.0 0.0 50.8 261.4 452.6 2171.2 DEWPOINT (MEAN C) -4.0 -6.9 -1.4 2.3 3.4 4.1 7.4 6.6 3.8 6.3 2.3 -1.1 1.9 MIXING RATIO (G/KG) 3.45 2.84 4.28 5.65 5.97 6.29 7.92 7.53 6.25 7.32 5.52 4.30 5.61 VAPOUR PRESSURE (HPA) 4.64 3.81 5.72 7.55 7.98 8.38 10.46 9.99 8.35 9.80 7.40 5.78 7.49 SATURATION DEF. (HPA) 4.25 6.20 4.63 9.78 18.54 28.97 37.22 37.14 25.36 14.09 5.69 2.90 16.23 RELATIVE HUMIDITY (MEAN %) 57 42 61 50 36 26 24 24 28 45 61 71 44 RELATIVE HUMIDITY (MAX. %) 79 62 84 79 64 48 39 41 42 66 85 88 65 RELATIVE HUMIDITY (MIN. %) 40 28 43 32 21 15 16 15 19 33 42 54 30 RELATIVE HUMIDITY (MEAN% 03UTC) 78 61 83 79 64 48 39 41 42 65 84 88 64 RELATIVE HUMIDITY (MEAN% 09UTC) 46 34 53 36 23 18 19 17 20 35 48 59 34 RELATIVE HUMIDITY (MEAN% 15UTC) 56 36 51 43 32 21 22 21 26 45 62 76 41 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 59.0 6.5 167.5 73.7 18.8 1.0 0.0 0.0 0.0 12.0 28.8 141.6 508.9 DAYS WITH PRECIPITATION >=10 2 0 5 3 1 0 0 0 0 0 1 5 17 DAYS WITH PRECIPITATION >= 5 2 0 11 5 1 0 0 0 0 1 2 6 28 DAYS WITH PRECIPITATION >= 1 3 3 17 9 2 1 0 0 0 3 5 7 50 DAYS WITH PRECIPITATION 3 4 17 12 5 1 0 0 0 4 10 10 66 GREATEST DAILY PRECIPITATION 32.0 3.0 42.0 23.0 17.0 1.0 0.0 0.0 0.0 7.0 16.0 49.0 49.0 DAY 16 19 29 7 5 21 ** ** ** 23 5 21 DAY WITH THUNDER STORM 1 0 3 5 2 0 0 0 0 2 0 2 15 DAYS WITH SNOW OR SLEET 2 0 1 0 0 0 0 0 0 0 0 3 6 DAYS WITH DUST 0 0 0 1 2 0 0 1 1 2 0 0 7 WIND DIRECTION (PREVAILING) 270 225 270 270 270 270 270 270 270 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 10.7 13.0 11.3 10.9 13.3 11.3 11.3 10.0 9.4 9.3 6.5 5.6 10.5 PREVAILING WIND PERCENT 16.1 18.6 22.6 22.7 23.2 21.3 34.2 25.2 20.0 21.9 14.7 5.8 20.2 CALMS PERCENT OF WIND 58.1 54.3 56.1 51.3 56.1 53.3 54.2 60.6 60.0 60.0 64.0 83.2 59.3 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 239 250 266 261 272 277 270 269 281 281 257 203 268 VECTOR WIND MAGNITUDE(KNOTS) 1.3 3.9 3.4 3.9 4.0 3.6 4.6 2.8 3.2 3.2 0.8 0.1 2.8 WIND STEADINESES (MEAN %) 29.5 72.2 66.7 63.9 72.7 64.3 86.8 75.7 88.9 88.9 32.0 10.0 65.1 WIND SPEED (MEAN KNOTS) 4.4 5.4 5.1 6.1 5.5 5.6 5.3 3.7 3.6 3.6 2.5 1.0 4.3 FASTEST WIND DIRECTION 240 240 250 30 270 270 240 250 260 280 130 300 30 FASTEST WIND SPEED (KNOTS) 21 25 19 27 27 21 19 21 19 17 14 14 27 DAY 28 22 3 25 23 17 4 6 26 2 5 9 DAYS WITH SKY CLEAR (0-2)/8 12 21 9 8 18 21 28 30 30 17 18 13 225 DAYS WITH P.CLOUDY (3-6)/8 13 5 11 17 12 9 3 1 0 13 6 13 103 DAYS WITH CLOUDY (7-8)/8 6 2 11 5 1 0 0 0 0 1 6 5 37 DAYS WITH VISIBILITY =< 2 KM 0 0 1 0 0 0 0 0 0 0 0 3 4 DURATION OF SUNSHINE HOURS 199.5 250.2 194.9 241.9 315.2 335.8 361.8 352.7 332.3 254.3 193.2 185.0 3216.8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 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 841.0 840.6 837.9 839.2 840.2 836.5 832.9 835.5 840.5 843.5 842.4 842.0 839.3 MAX. QFE PRESSURE IN HPA 846.6 845.8 846.2 844.3 844.0 841.5 836.3 839.4 845.6 847.5 848.5 847.0 848.5 DAY-HOUR 19- 6 17- 6 11- 6 13- 6 12- 6 8- 3 26- 3 10- 6 19- 6 9- 6 5- 6 23- 6 MIN. QFE PRESSURE IN HPA 831.1 836.3 828.6 834.0 835.3 829.0 828.2 831.0 836.4 839.4 838.5 835.3 828.2 DAY-HOUR 17-12 10-12 29- 9 5-12 5-12 30-12 16-12 5-12 2-12 23-12 19-12 10- 9 MEAN QNH PRESSURE IN HPA 1017.3 1016.8 1013.7 1015.2 1016.3 1012.0 1007.8 1010.9 1016.7 1020.2 1019.0 1018.5 1015.4 MAX. QNH PRESSURE IN HPA 1023.8 1022.9 1023.4 1021.2 1020.8 1017.9 1011.8 1015.4 1022.7 1024.9 1026.1 1024.3 1026.1 DAY-HOUR 19- 6 17- 6 11- 6 13- 6 12- 6 8- 3 26- 3 10- 6 19- 6 9- 6 5- 6 23- 6 MIN. QNH PRESSURE IN HPA 1005.7 1011.8 1002.8 1009.1 1010.7 1003.3 1002.4 1005.6 1011.9 1015.4 1014.4 1010.7 1002.4 DAY-HOUR 17-12 10-12 29- 9 5-12 5-12 30-12 16-12 5-12 2-12 23-12 19-12 10- 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 841.4 841.2 838.1 839.7 840.8 837.3 833.6 836.6 841.3 844.1 842.8 842.2 839.9 MAX. QFE PRESSURE IN HPA 846.1 844.7 845.3 843.6 843.8 841.5 836.3 839.2 845.1 846.9 847.5 845.9 847.5 DAY 7 17 1 13 12 8 26 10 19 9 8 23 MIN. QFE PRESSURE IN HPA 832.0 837.9 830.1 835.1 837.8 831.7 829.8 832.8 838.7 841.7 840.3 836.9 829.8 DAY 17 10 25 5 5 30 16 5 3 24 21 10 MEAN QNH PRESSURE IN HPA 1017.8 1017.5 1013.9 1015.8 1017.1 1013.0 1008.7 1012.2 1017.7 1021.0 1019.4 1018.7 1016.1 MAX. QNH PRESSURE IN HPA 1023.3 1021.6 1022.3 1020.3 1020.6 1017.9 1011.8 1015.2 1022.1 1024.2 1024.9 1023.0 1024.9 DAY 7 17 1 13 12 8 26 10 19 9 8 23 MIN. QNH PRESSURE IN HPA 1006.8 1013.7 1004.6 1010.4 1013.6 1006.4 1004.2 1007.7 1014.6 1018.1 1016.5 1012.5 1004.2 DAY 17 10 25 5 5 30 16 5 3 24 21 10 MEAN QFF PRESSURE IN HPA 1019.7 1019.1 1013.5 1011.3 1008.6 1000.9 994.3 998.3 1008.0 1014.1 1017.7 1021.3 1010.6 MAX. QFF PRESSURE IN HPA 1028.0 1024.7 1026.3 1020.1 1014.0 1007.2 999.0 1003.5 1012.9 1019.1 1022.7 1032.1 1032.1 DAY 20 8 1 13 6 8 26 31 30 28 30 23 MIN. QFF PRESSURE IN HPA 1005.5 1009.0 1001.1 1004.8 1002.1 992.3 989.4 993.3 1002.5 1009.8 1014.3 1011.3 989.4 DAY 16 22 25 5 31 30 16 1 3 7 12 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 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 842.2 841.7 838.9 840.2 841.2 837.5 833.8 836.8 841.7 844.6 843.7 843.2 840.5 MAX. QFE PRESSURE IN HPA 846.6 845.8 846.2 844.3 844.0 841.5 836.2 839.4 845.6 847.5 848.5 847.0 848.5 DAY 19 17 11 13 12 8 25 10 19 9 5 23 MIN. QFE PRESSURE IN HPA 833.3 838.6 830.4 835.1 838.6 832.2 829.8 833.2 838.6 842.3 840.9 836.6 829.8 DAY 17 10 29 5 5 30 16 5 3 23 20 14 MEAN QNH PRESSURE IN HPA 1018.7 1018.1 1014.9 1016.4 1017.5 1013.2 1009.0 1012.4 1018.1 1021.5 1020.4 1019.8 1016.7 MAX. QNH PRESSURE IN HPA 1023.8 1022.9 1023.4 1021.2 1020.8 1017.9 1011.7 1015.4 1022.7 1024.9 1026.1 1024.3 1026.1 DAY 19 17 11 13 12 8 25 10 19 9 5 23 MIN. QNH PRESSURE IN HPA 1008.3 1014.5 1004.9 1010.4 1014.5 1007.0 1004.2 1008.2 1014.5 1018.8 1017.2 1012.2 1004.2 DAY 17 10 29 5 5 30 16 5 3 23 20 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 841.0 840.6 838.1 839.2 840.3 836.4 832.9 835.5 840.5 843.2 842.2 841.7 839.3 MAX. QFE PRESSURE IN HPA 845.6 844.0 844.9 843.2 843.4 840.3 835.4 838.4 843.8 846.4 846.9 845.4 846.9 DAY 19 17 11 14 16 14 22 31 30 9 5 29 MIN. QFE PRESSURE IN HPA 832.2 837.1 828.6 834.4 836.6 830.0 828.7 832.0 837.7 840.6 839.3 835.3 828.6 DAY 17 10 29 5 5 30 16 5 10 23 20 10 MEAN QNH PRESSURE IN HPA 1017.4 1016.9 1013.9 1015.2 1016.5 1012.0 1007.9 1010.9 1016.7 1019.8 1018.7 1018.1 1015.3 MAX. QNH PRESSURE IN HPA 1022.7 1020.8 1021.9 1019.9 1020.1 1016.5 1010.8 1014.3 1020.6 1023.6 1024.2 1022.4 1024.2 DAY 19 17 11 14 16 14 22 31 30 9 5 29 MIN. QNH PRESSURE IN HPA 1007.0 1012.8 1002.8 1009.6 1012.2 1004.5 1002.9 1006.8 1013.5 1016.8 1015.3 1010.7 1002.8 DAY 17 10 29 5 5 30 16 5 10 23 20 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 839.9 839.4 837.0 838.3 839.1 835.5 831.8 834.1 839.3 842.3 841.5 841.1 838.3 MAX. QFE PRESSURE IN HPA 844.4 842.2 843.0 843.1 841.9 839.4 834.6 837.4 843.0 845.6 846.0 844.8 846.0 DAY 19 17 11 13 12 8 25 31 30 8 5 22 MIN. QFE PRESSURE IN HPA 831.1 836.3 829.3 834.0 835.3 829.0 828.2 831.0 836.4 839.4 838.5 836.2 828.2 DAY 17 10 29 5 5 30 16 5 2 23 19 10 MEAN QNH PRESSURE IN HPA 1016.0 1015.5 1012.7 1014.2 1015.1 1010.9 1006.5 1009.3 1015.3 1018.8 1017.8 1017.4 1014.1 MAX. QNH PRESSURE IN HPA 1021.3 1018.7 1019.6 1019.8 1018.4 1015.4 1009.8 1013.1 1019.6 1022.7 1023.1 1021.7 1023.1 DAY 19 17 11 13 12 8 25 31 30 8 5 22 MIN. QNH PRESSURE IN HPA 1005.7 1011.8 1003.6 1009.1 1010.7 1003.3 1002.4 1005.6 1011.9 1015.4 1014.4 1011.7 1002.4 DAY 17 10 29 5 5 30 16 5 2 23 19 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 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 840.5 839.9 837.3 838.7 839.5 835.8 832.3 834.6 839.8 843.2 842.1 841.9 838.8 MAX. QFE PRESSURE IN HPA 845.0 842.8 843.6 843.4 842.7 840.2 835.3 837.7 842.8 846.8 846.2 845.5 846.8 DAY 10 7 11 13 23 13 25 31 30 8 5 22 MIN. QFE PRESSURE IN HPA 832.0 836.3 828.8 834.5 836.3 829.9 828.9 831.6 836.8 840.8 839.7 837.0 828.8 DAY 17 22 29 5 5 30 16 5 2 23 20 10 MEAN QNH PRESSURE IN HPA 1016.7 1016.1 1013.0 1014.6 1015.5 1011.2 1007.1 1009.9 1015.9 1019.8 1018.6 1018.3 1014.7 MAX. QNH PRESSURE IN HPA 1022.0 1019.4 1020.3 1020.1 1019.3 1016.4 1010.7 1013.5 1019.4 1024.1 1023.4 1022.6 1024.1 DAY 10 7 11 13 23 13 25 31 30 8 5 22 MIN. QNH PRESSURE IN HPA 1006.8 1011.8 1003.1 1009.7 1011.8 1004.3 1003.2 1006.3 1012.4 1017.1 1015.8 1012.6 1003.1 DAY 17 22 29 5 5 30 16 5 2 23 20 10 MEAN QFF PRESSURE IN HPA 1018.6 1017.5 1012.5 1010.0 1006.9 999.1 992.5 995.9 1006.0 1012.9 1016.9 1020.7 1009.1 MAX. QFF PRESSURE IN HPA 1025.3 1024.2 1021.7 1018.2 1012.4 1005.5 997.2 1002.5 1011.0 1017.4 1021.5 1030.6 1030.6 DAY 19 7 1 13 6 4 25 31 30 28 29 22 MIN. QFF PRESSURE IN HPA 1007.3 1006.9 1001.2 1003.8 1000.6 989.3 987.9 991.8 1001.0 1008.3 1013.7 1012.5 987.9 DAY 17 22 29 27 30 29 11 4 2 6 24 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 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.1 6.4 10.5 17.3 23.2 28.9 30.8 30.7 26.3 19.5 13.8 10.9 18.4 MINIMUN AIR TEMPERATURE (C) -4.3 -0.6 3.2 6.4 10.9 16.1 19.0 18.5 13.5 7.4 2.0 1.7 7.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 8 5 0 0 0 0 14 DAYS WITH MINIMUM TEMP. <=-4 15 6 0 0 0 0 0 0 0 0 0 0 21 DAYS WITH FREEZING MIN.<= 0 23 18 9 0 0 0 0 0 0 0 3 11 64 TEMPERATURE RECORDS LOWEST(C) -17.0 -6.8 -3.6 0.6 4.6 11.8 14.2 14.6 9.0 3.0 -0.2 -2.4 -17.0 DAY 14 17 4 25 2 2 9 23 23 28 27 17 MAXIMUM AIR TEMPERATURE (C) 6.8 10.9 15.1 22.8 28.2 34.2 36.6 36.5 32.6 26.4 21.4 18.1 24.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 8 29 31 31 30 6 0 0 135 DAYS WITH MAXIMUM TEMP. <= 0 2 0 0 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS HIGHEST(C) 10.2 15.8 23.0 28.4 33.2 37.6 41.6 39.2 35.6 31.0 23.2 23.0 41.6 DAY 25 7 28 14 28 30 12 19 1 1 18 11 DIF. BETWEEN (MAX.-MIN.) (C) 11.1 11.5 11.9 16.4 17.3 18.1 17.6 18.0 19.1 19.0 19.4 16.4 16.3 MEAN DAILY TEMP. (MDT) (C) 1.3 5.1 9.1 14.6 19.5 25.2 27.8 27.5 23.0 16.9 11.7 9.9 16.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 11.0 126.3 210.7 201.4 61.9 0.2 0.0 0.0 611.5 HEATING DEG. DAYS(BASE 18 0C) 519.2 360.1 274.9 103.1 16.4 0.0 0.0 0.0 0.0 49.3 187.9 250.5 1761.4 DEWPOINT (MEAN C) -3.3 -1.6 0.9 4.5 4.0 8.7 10.0 5.8 5.8 2.5 -5.2 -2.1 2.5 MIXING RATIO (G/KG) 3.72 4.24 5.13 6.49 6.21 8.70 9.67 7.12 7.12 6.06 3.22 4.14 5.98 VAPOUR PRESSURE (HPA) 4.99 5.68 6.86 8.67 8.30 11.54 12.75 9.46 9.49 8.10 4.34 5.58 7.98 SATURATION DEF. (HPA) 2.49 4.38 6.53 12.17 21.57 30.17 33.37 36.68 26.75 16.27 12.60 8.42 17.62 RELATIVE HUMIDITY (MEAN %) 69 61 57 47 31 30 30 23 29 36 29 45 41 RELATIVE HUMIDITY (MAX. %) 87 84 83 77 56 45 46 38 45 53 46 64 60 RELATIVE HUMIDITY (MIN. %) 52 41 38 30 20 23 22 15 20 25 17 31 28 RELATIVE HUMIDITY (MEAN% 03UTC) 85 82 82 76 55 45 46 38 45 53 46 63 60 RELATIVE HUMIDITY (MEAN% 09UTC) 59 48 45 34 22 24 25 17 22 30 22 35 32 RELATIVE HUMIDITY (MEAN% 15UTC) 73 59 51 43 27 26 26 19 26 34 29 45 38 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 187.7 131.6 194.5 21.0 1.2 1.0 1.6 0.0 0.0 7.1 1.0 20.3 567.0 DAYS WITH PRECIPITATION >=10 5 4 5 0 0 0 0 0 0 0 0 0 14 DAYS WITH PRECIPITATION >= 5 6 6 8 2 0 0 0 0 0 1 0 2 25 DAYS WITH PRECIPITATION >= 1 10 8 11 6 1 1 1 0 0 2 1 5 46 DAYS WITH PRECIPITATION 12 10 12 7 4 1 3 1 1 3 1 7 62 GREATEST DAILY PRECIPITATION 64.0 40.0 65.0 8.0 1.0 1.0 1.0 0.0 0.0 5.6 1.0 9.0 65.0 DAY 5 12 18 20 14 22 26 ** ** 11 12 4 DAY WITH THUNDER STORM 1 2 2 1 1 0 0 0 0 2 0 1 10 DAYS WITH SNOW OR SLEET 3 1 1 0 0 0 0 0 0 0 0 0 5 DAYS WITH DUST 0 0 1 0 0 0 1 0 0 0 0 0 2 WIND DIRECTION (PREVAILING) 270 270 270 270 270 90 315 315 270 270 270 225 270 PREVAILING WIND SPEED(KNOTS) 7.0 7.9 7.5 8.1 8.1 8.4 6.1 5.9 7.2 6.1 4.9 8.0 7.1 PREVAILING WIND PERCENT 11.6 12.9 10.3 12.0 19.4 8.0 16.8 9.7 14.7 9.7 6.0 5.8 10.6 CALMS PERCENT OF WIND 74.2 60.7 71.6 64.0 54.8 64.7 56.1 60.6 66.7 72.9 88.0 86.5 68.4 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 252 255 265 263 279 85 298 8 286 299 270 249 275 VECTOR WIND MAGNITUDE(KNOTS) 0.7 1.1 1.6 2.1 2.9 0.3 1.0 0.6 1.8 0.4 0.4 0.6 1.0 WIND STEADINESES (MEAN %) 43.8 34.4 66.7 70.0 80.6 10.7 31.3 23.1 78.3 22.2 66.7 66.7 43.5 WIND SPEED (MEAN KNOTS) 1.6 3.2 2.4 3.0 3.6 2.8 3.2 2.6 2.3 1.8 0.6 0.9 2.3 FASTEST WIND DIRECTION 260 100 220 230 200 150 100 310 300 80 270 270 100 FASTEST WIND SPEED (KNOTS) 14 27 19 19 17 19 23 14 17 14 10 12 27 DAY 6 23 29 5 14 20 14 5 23 13 16 3 DAYS WITH SKY CLEAR (0-2)/8 15 9 8 18 22 27 20 25 29 27 22 16 238 DAYS WITH P.CLOUDY (3-6)/8 11 14 12 9 9 3 11 6 1 4 7 11 98 DAYS WITH CLOUDY (7-8)/8 5 5 11 3 0 0 0 0 0 0 1 4 29 DAYS WITH VISIBILITY =< 2 KM 3 0 0 0 0 0 0 0 0 0 0 0 3 DURATION OF SUNSHINE HOURS 201.8 194.9 197.2 272.3 344.8 350.3 336.6 341.1 313.8 294.2 258.0 226.5 3331.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 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 839.9 840.0 839.7 840.2 839.9 837.7 834.4 837.0 839.1 842.5 844.2 845.2 840.0 MAX. QFE PRESSURE IN HPA 847.0 848.0 845.5 848.9 846.5 842.7 840.1 842.1 844.2 847.8 849.3 851.4 851.4 DAY-HOUR 4- 6 23- 6 28- 6 12- 6 8- 6 6- 3 22- 6 29- 6 26- 6 25- 6 21- 6 10- 6 MIN. QFE PRESSURE IN HPA 828.6 832.6 830.0 834.4 833.8 831.1 829.5 833.4 834.7 837.2 839.8 839.9 828.6 DAY-HOUR 13- 3 12-12 1-12 23- 3 30-12 30-15 7-12 22-12 3-12 4-12 1-12 21-12 MEAN QNH PRESSURE IN HPA 1016.0 1016.1 1015.8 1016.4 1016.0 1013.4 1009.6 1012.7 1015.1 1019.0 1021.1 1022.2 1016.1 MAX. QNH PRESSURE IN HPA 1024.3 1025.5 1022.6 1026.5 1023.7 1019.3 1016.2 1018.6 1021.0 1025.2 1027.0 1029.4 1029.4 DAY-HOUR 4- 6 23- 6 28- 6 12- 6 8- 6 6- 3 22- 6 29- 6 26- 6 25- 6 21- 6 10- 6 MIN. QNH PRESSURE IN HPA 1002.8 1007.5 1004.5 1009.6 1008.9 1005.7 1003.9 1008.4 1009.9 1012.9 1015.9 1016.0 1002.8 DAY-HOUR 13- 3 12-12 1-12 23- 3 30-12 30-15 7-12 22-12 3-12 4-12 1-12 21-12 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 840.0 840.3 840.0 840.6 840.5 838.6 835.2 838.0 839.9 843.1 844.8 845.6 840.6 MAX. QFE PRESSURE IN HPA 845.7 846.8 845.0 848.3 845.7 842.7 839.9 841.5 843.2 847.0 848.4 850.7 850.7 DAY 22 24 28 12 8 6 22 29 26 29 21 10 MIN. QFE PRESSURE IN HPA 828.6 833.2 833.5 834.4 834.9 834.1 831.2 834.9 836.7 839.3 842.3 841.4 828.6 DAY 13 16 2 23 30 30 9 22 4 4 1 21 MEAN QNH PRESSURE IN HPA 1016.2 1016.4 1016.2 1016.8 1016.7 1014.5 1010.6 1013.8 1016.1 1019.8 1021.7 1022.6 1016.8 MAX. QNH PRESSURE IN HPA 1022.8 1024.1 1022.0 1025.8 1022.8 1019.3 1016.0 1017.9 1019.9 1024.3 1025.9 1028.6 1028.6 DAY 22 24 28 12 8 6 22 29 26 29 21 10 MIN. QNH PRESSURE IN HPA 1002.8 1008.2 1008.6 1009.6 1010.2 1009.2 1005.9 1010.2 1012.3 1015.3 1018.8 1017.8 1002.8 DAY 13 16 2 23 30 30 9 22 4 4 1 21 MEAN QFF PRESSURE IN HPA 1019.8 1016.8 1013.8 1010.8 1006.8 1001.0 995.7 999.6 1004.9 1013.3 1019.7 1021.6 1010.3 MAX. QFF PRESSURE IN HPA 1031.8 1027.7 1020.8 1019.9 1012.4 1006.2 1001.3 1004.0 1009.4 1019.8 1024.6 1028.5 1031.8 DAY 15 24 22 12 3 20 22 29 26 29 21 9 MIN. QFF PRESSURE IN HPA 1006.7 1005.5 1004.7 1002.7 999.2 993.2 989.8 995.8 998.6 1006.1 1015.5 1013.5 989.8 DAY 13 8 30 23 30 30 13 22 3 1 1 31 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 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 841.0 841.2 840.7 841.1 840.8 838.7 835.4 838.3 840.4 843.7 845.7 846.6 841.1 MAX. QFE PRESSURE IN HPA 847.0 848.0 845.5 848.9 846.5 842.4 840.1 842.1 844.2 847.8 849.3 851.4 851.4 DAY 4 23 28 12 8 5 22 29 26 25 21 10 MIN. QFE PRESSURE IN HPA 829.2 834.3 831.7 835.7 834.6 833.7 831.4 835.3 836.6 839.7 842.7 841.8 829.2 DAY 13 12 1 23 30 30 9 22 4 1 1 21 MEAN QNH PRESSURE IN HPA 1017.4 1017.5 1017.0 1017.4 1017.1 1014.6 1010.8 1014.1 1016.6 1020.5 1022.8 1023.9 1017.5 MAX. QNH PRESSURE IN HPA 1024.3 1025.5 1022.6 1026.5 1023.7 1018.9 1016.2 1018.6 1021.0 1025.2 1027.0 1029.4 1029.4 DAY 4 23 28 12 8 5 22 29 26 25 21 10 MIN. QNH PRESSURE IN HPA 1003.5 1009.5 1006.4 1011.1 1009.8 1008.8 1006.1 1010.7 1012.2 1015.8 1019.3 1018.2 1003.5 DAY 13 12 1 23 30 30 9 22 4 1 1 21 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 839.6 840.0 839.8 840.2 840.1 837.9 834.5 837.2 839.2 842.4 844.0 845.0 840.0 MAX. QFE PRESSURE IN HPA 845.4 847.0 845.0 847.9 845.0 841.8 839.1 840.4 842.8 846.2 847.9 849.5 849.5 DAY 22 23 27 12 8 5 22 29 26 25 21 9 MIN. QFE PRESSURE IN HPA 829.2 833.5 831.1 834.8 834.2 833.1 830.5 834.1 835.5 838.6 840.9 840.2 829.2 DAY 13 12 1 21 30 30 7 22 4 4 1 21 MEAN QNH PRESSURE IN HPA 1015.7 1016.1 1015.9 1016.4 1016.2 1013.6 1009.7 1012.8 1015.2 1018.9 1020.8 1021.9 1016.1 MAX. QNH PRESSURE IN HPA 1022.4 1024.3 1022.0 1025.4 1022.0 1018.2 1015.1 1016.6 1019.4 1023.4 1025.4 1027.2 1027.2 DAY 22 23 27 12 8 5 22 29 26 25 21 9 MIN. QNH PRESSURE IN HPA 1003.5 1008.6 1005.7 1010.1 1009.4 1008.1 1005.0 1009.2 1010.9 1014.5 1017.2 1016.4 1003.5 DAY 13 12 1 21 30 30 7 22 4 4 1 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 839.0 838.9 838.8 839.4 839.0 836.8 833.3 835.9 837.9 841.3 842.9 844.1 839.0 MAX. QFE PRESSURE IN HPA 845.2 845.8 844.1 845.9 843.5 840.7 837.3 838.6 841.6 844.8 846.5 848.9 848.9 DAY 4 23 27 12 8 5 22 29 26 25 21 9 MIN. QFE PRESSURE IN HPA 831.4 832.6 830.0 834.6 833.8 831.5 829.5 833.4 834.7 837.2 839.8 839.9 829.5 DAY 13 12 1 21 30 30 7 22 3 4 1 21 MEAN QNH PRESSURE IN HPA 1015.0 1014.9 1014.8 1015.5 1014.9 1012.4 1008.3 1011.3 1013.7 1017.7 1019.5 1020.9 1014.9 MAX. QNH PRESSURE IN HPA 1022.2 1022.9 1020.9 1023.0 1020.2 1017.0 1013.0 1014.5 1018.0 1021.7 1023.7 1026.5 1026.5 DAY 4 23 27 12 8 5 22 29 26 25 21 9 MIN. QNH PRESSURE IN HPA 1006.1 1007.5 1004.5 1009.8 1008.9 1006.2 1003.9 1008.4 1009.9 1012.9 1015.9 1016.0 1003.9 DAY 13 12 1 21 30 30 7 22 3 4 1 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 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 839.8 839.7 839.3 839.7 839.0 836.6 833.7 835.9 838.2 842.0 843.8 844.9 839.4 MAX. QFE PRESSURE IN HPA 845.9 846.5 844.3 845.2 843.0 840.8 837.0 838.4 842.2 845.4 847.5 849.3 849.3 DAY 4 23 27 12 8 5 15 28 26 25 21 9 MIN. QFE PRESSURE IN HPA 831.4 833.1 830.8 835.0 834.7 831.1 829.9 833.8 834.9 837.5 841.5 840.7 829.9 DAY 12 15 1 23 30 30 8 4 3 3 1 21 MEAN QNH PRESSURE IN HPA 1015.9 1015.8 1015.3 1015.8 1015.0 1012.2 1008.8 1011.3 1014.1 1018.5 1020.6 1021.9 1015.4 MAX. QNH PRESSURE IN HPA 1023.0 1023.7 1021.2 1022.2 1019.6 1017.1 1012.6 1014.3 1018.7 1022.4 1024.9 1027.0 1027.0 DAY 4 23 27 12 8 5 15 28 26 25 21 9 MIN. QNH PRESSURE IN HPA 1006.1 1008.1 1005.4 1010.3 1009.9 1005.7 1004.3 1008.9 1010.2 1013.2 1017.9 1017.0 1004.3 DAY 12 15 1 23 30 30 8 4 3 3 1 21 MEAN QFF PRESSURE IN HPA 1019.5 1016.0 1012.9 1009.6 1005.0 998.4 993.8 997.0 1002.8 1012.0 1018.5 1020.8 1008.8 MAX. QFF PRESSURE IN HPA 1031.5 1025.2 1019.7 1015.8 1010.2 1004.5 998.4 1000.7 1007.9 1018.3 1024.2 1027.0 1031.5 DAY 14 23 22 11 2 20 16 28 26 25 21 9 MIN. QFF PRESSURE IN HPA 1008.2 1006.6 1003.5 1002.0 999.4 988.8 988.4 993.6 996.2 1004.4 1014.5 1012.1 988.4 DAY 12 8 1 23 29 30 12 3 3 3 16 31 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 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.3 7.5 9.8 16.8 24.1 28.9 30.9 30.6 26.0 20.0 11.8 7.5 18.2 MINIMUN AIR TEMPERATURE (C) -1.5 0.1 1.6 6.6 10.3 13.8 18.6 18.6 12.2 8.1 3.0 -0.9 7.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 6 6 0 0 0 0 12 DAYS WITH MINIMUM TEMP. <=-4 6 1 0 0 0 0 0 0 0 0 1 0 8 DAYS WITH FREEZING MIN.<= 0 22 16 12 0 0 0 0 0 0 0 5 22 77 TEMPERATURE RECORDS LOWEST(C) -12.0 -4.0 -2.6 1.8 6.4 10.0 15.0 15.0 6.6 3.6 -5.6 -3.6 -12.0 DAY 22 22 7 19 11 7 2 29 25 22 30 1 MAXIMUM AIR TEMPERATURE (C) 9.1 13.0 14.8 22.4 30.0 34.4 36.5 36.5 32.7 26.5 17.9 14.8 24.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 16 30 31 31 24 4 0 0 136 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 14.0 19.4 24.4 26.8 35.4 37.2 40.2 37.8 36.0 30.6 22.0 20.4 40.2 DAY 6 8 31 27 31 20 4 1 5 1 6 9 DIF. BETWEEN (MAX.-MIN.) (C) 10.6 12.9 13.2 15.8 19.7 20.6 17.9 17.9 20.5 18.4 14.9 15.7 16.5 MEAN DAILY TEMP. (MDT) (C) 3.8 6.6 8.2 14.5 20.1 24.1 27.5 27.5 22.5 17.3 10.5 7.0 15.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 23.6 93.7 202.2 201.7 59.0 0.1 0.0 0.0 580.3 HEATING DEG. DAYS(BASE 18 0C) 440.1 320.3 303.6 104.7 5.9 0.0 0.0 0.0 0.6 43.4 226.0 341.7 1786.3 DEWPOINT (MEAN C) -1.1 -0.6 -1.5 2.3 3.1 0.5 5.5 5.5 3.1 -2.9 0.8 -4.1 0.9 MIXING RATIO (G/KG) 4.33 4.50 4.25 5.77 5.98 4.96 7.02 6.90 6.54 3.84 5.09 3.55 5.23 VAPOUR PRESSURE (HPA) 5.82 6.03 5.68 7.72 7.98 6.61 9.29 9.17 8.69 5.17 6.84 4.79 6.98 SATURATION DEF. (HPA) 2.77 4.84 7.19 12.32 23.92 35.31 37.23 36.62 27.29 19.85 7.79 6.31 18.45 RELATIVE HUMIDITY (MEAN %) 71 60 51 42 29 18 23 22 26 25 52 50 39 RELATIVE HUMIDITY (MAX. %) 87 82 77 70 51 35 38 37 42 43 80 72 60 RELATIVE HUMIDITY (MIN. %) 55 41 35 26 19 11 14 14 17 13 31 30 26 RELATIVE HUMIDITY (MEAN% 03UTC) 84 80 75 68 51 35 38 37 42 43 78 71 59 RELATIVE HUMIDITY (MEAN% 09UTC) 64 51 39 31 21 12 17 16 19 16 36 35 30 RELATIVE HUMIDITY (MEAN% 15UTC) 73 59 46 40 24 13 17 19 24 24 53 53 37 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 186.0 125.6 142.4 16.4 0.0 0.0 0.0 1.0 0.0 0.8 36.1 81.6 589.9 DAYS WITH PRECIPITATION >=10 5 5 4 0 0 0 0 0 0 0 1 4 19 DAYS WITH PRECIPITATION >= 5 8 9 4 1 0 0 0 0 0 0 3 4 29 DAYS WITH PRECIPITATION >= 1 11 11 7 5 0 0 0 1 0 0 7 4 46 DAYS WITH PRECIPITATION 16 11 11 8 0 0 0 1 0 2 9 5 63 GREATEST DAILY PRECIPITATION 40.0 26.0 45.0 6.0 0.0 0.0 0.0 1.0 0.0 0.6 13.0 41.0 45.0 DAY 18 21 13 6 ** ** ** 19 ** 27 11 12 DAY WITH THUNDER STORM 0 0 2 0 0 0 0 0 0 0 1 0 3 DAYS WITH SNOW OR SLEET 6 2 1 0 0 0 0 0 0 0 0 1 10 DAYS WITH DUST 0 0 0 0 3 0 3 0 0 0 0 0 6 WIND DIRECTION (PREVAILING) 45 270 270 315 270 270 180 90 270 270 225 270 270 PREVAILING WIND SPEED(KNOTS) 8.0 6.2 6.6 7.0 7.8 7.3 5.5 5.7 6.2 5.6 6.9 6.0 6.5 PREVAILING WIND PERCENT 2.6 9.3 8.4 14.0 13.5 11.3 7.1 8.4 15.3 11.6 6.7 1.9 8.5 CALMS PERCENT OF WIND 87.7 77.9 70.3 67.3 72.3 74.7 64.5 61.3 67.3 76.1 82.0 94.8 74.7 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 137 273 232 273 269 280 238 206 280 279 259 280 266 VECTOR WIND MAGNITUDE(KNOTS) 0.1 0.8 0.8 2.0 1.5 1.5 1.0 0.4 1.6 1.0 0.9 0.1 0.9 WIND STEADINESES (MEAN %) 11.1 57.1 38.1 80.0 75.0 83.3 47.6 16.7 76.2 83.3 75.0 33.3 52.9 WIND SPEED (MEAN KNOTS) 0.9 1.4 2.1 2.5 2.0 1.8 2.1 2.4 2.1 1.2 1.2 0.3 1.7 FASTEST WIND DIRECTION 310 320 220 220 250 300 210 290 300 280 210 250 220 FASTEST WIND SPEED (KNOTS) 14 14 14 27 23 14 14 14 17 10 17 8 27 DAY 21 6 22 5 14 14 26 18 21 20 8 10 DAYS WITH SKY CLEAR (0-2)/8 11 13 12 11 29 30 28 21 30 28 19 20 252 DAYS WITH P.CLOUDY (3-6)/8 12 7 7 12 2 0 3 9 0 3 8 8 71 DAYS WITH CLOUDY (7-8)/8 8 8 12 7 0 0 0 1 0 0 3 3 42 DAYS WITH VISIBILITY =< 2 KM 6 2 1 0 0 0 0 0 0 0 2 2 13 DURATION OF SUNSHINE HOURS 153.9 180.8 205.3 246.9 362.3 377.9 356.4 307.2 324.1 284.8 227.1 234.3 3261.0 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 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 840.9 841.0 838.3 840.2 838.8 836.7 833.4 836.5 838.1 842.5 842.6 844.7 839.5 MAX. QFE PRESSURE IN HPA 845.9 846.1 844.0 844.7 844.9 842.4 837.1 842.2 844.3 846.5 847.8 849.5 849.5 DAY-HOUR 11- 6 12- 6 31- 6 25- 6 28- 6 2- 3 8- 6 20- 6 30- 6 27- 6 15- 9 6- 6 MIN. QFE PRESSURE IN HPA 833.7 830.5 829.2 834.5 833.5 829.7 828.8 831.0 833.7 837.9 837.7 839.4 828.8 DAY-HOUR 18-12 6- 3 2- 3 8-12 20-12 24-12 12-12 14-12 16-12 8-12 11-12 15-12 MEAN QNH PRESSURE IN HPA 1017.2 1017.2 1014.1 1016.3 1014.7 1012.3 1008.4 1012.0 1013.9 1019.0 1019.1 1021.6 1015.5 MAX. QNH PRESSURE IN HPA 1023.0 1023.3 1020.8 1021.6 1021.9 1018.9 1012.8 1018.7 1021.2 1023.7 1025.2 1027.2 1027.2 DAY-HOUR 11- 6 12- 6 31- 6 25- 6 28- 6 2- 3 8- 6 20- 6 30- 6 27- 6 15- 9 6- 6 MIN. QNH PRESSURE IN HPA 1008.8 1005.0 1003.5 1009.7 1008.6 1004.1 1003.1 1005.6 1008.8 1013.7 1013.5 1015.4 1003.1 DAY-HOUR 18-12 6- 3 2- 3 8-12 20-12 24-12 12-12 14-12 16-12 8-12 11-12 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 840.9 841.1 838.4 840.6 839.6 837.4 834.3 837.5 838.9 843.1 842.9 845.0 840.0 MAX. QFE PRESSURE IN HPA 844.9 844.1 843.4 842.9 844.2 842.4 836.7 842.0 843.5 845.2 846.4 848.3 848.3 DAY 12 12 31 11 28 2 1 19 30 11 15 6 MIN. QFE PRESSURE IN HPA 833.8 830.5 829.2 834.9 835.5 832.0 830.9 833.6 835.5 841.0 838.5 840.3 829.2 DAY 18 6 2 8 21 24 12 14 16 26 12 15 MEAN QNH PRESSURE IN HPA 1017.2 1017.4 1014.3 1016.9 1015.6 1013.2 1009.5 1013.2 1014.9 1019.8 1019.5 1021.9 1016.1 MAX. QNH PRESSURE IN HPA 1021.9 1020.9 1020.1 1019.5 1021.0 1018.9 1012.3 1018.5 1020.2 1022.2 1023.6 1025.8 1025.8 DAY 12 12 31 11 28 2 1 19 30 11 15 6 MIN. QNH PRESSURE IN HPA 1008.9 1005.0 1003.5 1010.2 1010.9 1006.8 1005.5 1008.7 1010.9 1017.3 1014.4 1016.5 1003.5 DAY 18 6 2 8 21 24 12 14 16 26 12 15 MEAN QFF PRESSURE IN HPA 1019.0 1017.2 1012.6 1011.0 1005.7 1000.1 994.7 999.1 1004.3 1013.0 1017.1 1023.0 1009.7 MAX. QFF PRESSURE IN HPA 1025.8 1022.4 1018.4 1017.1 1012.8 1005.2 998.2 1005.5 1010.7 1017.4 1024.1 1028.1 1028.1 DAY 22 23 19 11 1 2 1 19 30 28 14 6 MIN. QFF PRESSURE IN HPA 1011.2 1006.0 1002.7 1000.7 1000.5 993.8 990.0 993.7 1000.1 1008.7 1008.3 1015.3 990.0 DAY 1 6 2 8 20 24 12 8 12 8 1 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 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 842.1 842.1 839.4 841.2 839.8 837.6 834.4 837.7 839.3 843.9 843.8 846.0 840.6 MAX. QFE PRESSURE IN HPA 845.9 846.1 844.0 844.7 844.9 842.4 837.1 842.2 844.3 846.5 847.6 849.5 849.5 DAY 11 12 31 25 28 2 8 20 30 27 14 6 MIN. QFE PRESSURE IN HPA 834.6 834.0 831.2 835.5 835.5 831.5 831.0 833.8 836.1 841.4 839.1 841.1 831.0 DAY 18 6 2 8 20 24 12 14 16 9 12 15 MEAN QNH PRESSURE IN HPA 1018.6 1018.6 1015.5 1017.5 1015.9 1013.3 1009.6 1013.5 1015.3 1020.7 1020.6 1023.1 1016.8 MAX. QNH PRESSURE IN HPA 1023.0 1023.3 1020.8 1021.6 1021.9 1018.9 1012.8 1018.7 1021.2 1023.7 1025.0 1027.2 1027.2 DAY 11 12 31 25 28 2 8 20 30 27 14 6 MIN. QNH PRESSURE IN HPA 1009.8 1009.1 1005.9 1010.9 1010.9 1006.2 1005.6 1008.9 1011.6 1017.8 1015.1 1017.4 1005.6 DAY 18 6 2 8 20 24 12 14 16 9 12 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 841.1 841.1 838.5 840.3 838.9 836.8 833.3 836.5 837.9 842.3 842.4 844.5 839.5 MAX. QFE PRESSURE IN HPA 845.0 845.2 842.9 843.3 843.8 841.8 836.2 841.0 842.8 844.9 847.8 847.8 847.8 DAY 12 12 31 30 28 2 8 19 30 11 15 6 MIN. QFE PRESSURE IN HPA 834.0 835.4 830.7 834.9 834.6 830.4 829.8 832.4 834.7 839.7 838.4 839.6 829.8 DAY 18 6 2 8 20 24 12 14 16 8 12 15 MEAN QNH PRESSURE IN HPA 1017.4 1017.4 1014.4 1016.5 1014.8 1012.4 1008.3 1012.1 1013.7 1018.9 1018.9 1021.4 1015.5 MAX. QNH PRESSURE IN HPA 1022.0 1022.2 1019.5 1020.0 1020.6 1018.2 1011.7 1017.3 1019.4 1021.9 1025.2 1025.2 1025.2 DAY 12 12 31 30 28 2 8 19 30 11 15 6 MIN. QNH PRESSURE IN HPA 1009.1 1010.8 1005.3 1010.2 1009.8 1004.9 1004.2 1007.3 1009.9 1015.8 1014.3 1015.7 1004.2 DAY 18 6 2 8 20 24 12 14 16 8 12 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 840.1 840.0 837.3 839.3 837.8 835.9 832.3 835.3 836.9 841.3 841.6 843.5 838.4 MAX. QFE PRESSURE IN HPA 844.3 844.2 841.1 842.2 842.5 840.6 835.5 840.7 841.8 844.7 847.2 846.3 847.2 DAY 12 12 30 22 1 2 8 20 30 27 15 24 MIN. QFE PRESSURE IN HPA 833.7 834.6 829.9 834.5 833.5 829.7 828.8 831.0 833.7 837.9 837.7 839.4 828.8 DAY 18 5 2 8 20 24 12 14 16 8 11 15 MEAN QNH PRESSURE IN HPA 1016.2 1016.2 1013.0 1015.3 1013.5 1011.3 1007.1 1010.6 1012.5 1017.6 1018.0 1020.3 1014.3 MAX. QNH PRESSURE IN HPA 1021.2 1021.0 1017.4 1018.7 1019.1 1016.8 1010.9 1017.0 1018.2 1021.6 1024.5 1023.5 1024.5 DAY 12 12 30 22 1 2 8 20 30 27 15 24 MIN. QNH PRESSURE IN HPA 1008.8 1009.8 1004.3 1009.7 1008.6 1004.1 1003.1 1005.6 1008.8 1013.7 1013.5 1015.4 1003.1 DAY 18 5 2 8 20 24 12 14 16 8 11 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 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 840.6 840.5 837.7 839.6 837.9 836.0 832.6 835.4 837.5 841.7 842.2 844.3 838.8 MAX. QFE PRESSURE IN HPA 844.8 845.1 842.1 843.1 842.5 841.1 835.3 840.7 842.2 844.5 847.0 847.1 847.1 DAY 12 12 30 5 1 2 8 20 30 27 15 24 MIN. QFE PRESSURE IN HPA 834.5 833.1 831.0 834.7 834.5 830.4 829.0 831.5 834.9 838.2 837.7 840.4 829.0 DAY 18 5 2 8 20 24 12 14 16 8 11 15 MEAN QNH PRESSURE IN HPA 1016.8 1016.8 1013.5 1015.6 1013.7 1011.5 1007.5 1010.8 1013.2 1018.1 1018.7 1021.2 1014.8 MAX. QNH PRESSURE IN HPA 1021.7 1022.1 1018.6 1019.8 1019.1 1017.4 1010.7 1017.0 1018.7 1021.4 1024.3 1024.4 1024.4 DAY 12 12 30 5 1 2 8 20 30 27 15 24 MIN. QNH PRESSURE IN HPA 1009.7 1008.1 1005.6 1009.9 1009.7 1004.9 1003.3 1006.2 1010.2 1014.0 1013.5 1016.6 1003.3 DAY 18 5 2 8 20 24 12 14 16 8 11 15 MEAN QFF PRESSURE IN HPA 1018.6 1016.4 1011.7 1009.7 1003.5 998.4 992.8 996.6 1002.4 1011.2 1016.4 1022.2 1008.3 MAX. QFF PRESSURE IN HPA 1025.9 1022.3 1017.2 1014.8 1011.3 1003.8 996.5 1003.7 1008.7 1016.0 1023.1 1026.5 1026.5 DAY 22 12 18 22 1 2 8 18 30 28 15 24 MIN. QFF PRESSURE IN HPA 1011.5 1008.0 1004.1 1001.6 999.8 992.3 987.4 991.2 996.5 1005.2 1009.0 1014.7 987.4 DAY 18 20 2 8 20 24 20 13 6 8 1 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 2006,MAY M.(S & A) STATION LORDEGAN (40814) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 31 N LONGITUDE 50 49 E DATA PROCESSING CENTER ELEVATION 1580.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.9 5.8 10.9 19.4 23.8 28.4 31.0 30.3 25.5 18.5 10.2 5.9 17.8 MINIMUN AIR TEMPERATURE (C) -2.5 -2.4 0.7 7.5 9.1 13.8 19.1 17.8 12.4 7.6 2.9 -0.3 7.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 8 4 0 0 0 0 12 DAYS WITH MINIMUM TEMP. <=-4 12 9 9 0 0 0 0 0 0 0 0 6 36 DAYS WITH FREEZING MIN.<= 0 23 24 13 0 0 0 0 0 0 0 5 16 81 TEMPERATURE RECORDS LOWEST(C) -8.0 -7.0 -5.1 2.0 4.6 11.0 15.6 9.4 8.8 3.8 -2.4 -5.2 -8.0 DAY 31 9 3 1 3 10 7 31 1 20 29 17 MAXIMUM AIR TEMPERATURE (C) 9.2 11.8 16.7 25.4 30.2 34.7 36.9 37.0 32.4 25.2 15.7 11.3 23.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 16 30 31 31 27 0 0 0 135 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 18.2 16.6 20.0 29.4 34.2 39.8 39.8 39.0 36.2 29.2 22.4 17.4 39.8 DAY 1 24 22 14 31 30 10 28 9 1 2 1 DIF. BETWEEN (MAX.-MIN.) (C) 11.7 14.2 16.0 17.9 21.1 20.9 17.8 19.2 20.0 17.6 12.8 11.6 16.8 MEAN DAILY TEMP. (MDT) (C) 3.3 4.7 8.7 16.4 19.6 24.2 28.0 27.4 22.4 16.4 9.3 5.5 15.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 5.2 97.1 216.9 197.1 45.1 0.0 0.0 0.0 561.4 HEATING DEG. DAYS(BASE 18 0C) 455.0 384.8 288.6 56.5 4.6 0.0 0.0 0.0 0.0 53.4 261.1 386.0 1890.1 DEWPOINT (MEAN C) -4.2 -5.4 -6.5 -1.5 -0.2 0.4 1.8 6.2 1.8 0.9 1.5 0.2 -0.4 MIXING RATIO (G/KG) 3.50 3.23 3.07 4.31 4.76 4.81 5.37 7.30 5.39 5.09 5.21 4.73 4.73 VAPOUR PRESSURE (HPA) 4.70 4.34 4.12 5.78 6.37 6.41 7.15 9.69 7.20 6.84 7.00 6.36 6.33 SATURATION DEF. (HPA) 3.77 5.42 9.78 18.14 25.16 34.60 39.78 35.68 27.49 15.76 6.08 3.31 18.75 RELATIVE HUMIDITY (MEAN %) 62 50 34 29 24 18 17 24 24 35 59 70 37 RELATIVE HUMIDITY (MAX. %) 81 77 63 57 47 34 29 37 39 57 83 88 58 RELATIVE HUMIDITY (MIN. %) 44 31 17 15 14 11 11 16 14 20 39 50 24 RELATIVE HUMIDITY (MEAN% 03UTC) 79 74 63 57 47 34 29 37 39 55 82 86 57 RELATIVE HUMIDITY (MEAN% 09UTC) 53 38 23 19 16 13 13 18 16 25 45 57 28 RELATIVE HUMIDITY (MEAN% 15UTC) 62 48 24 21 18 14 14 21 21 34 60 73 34 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 172.4 60.4 29.0 2.1 2.0 0.0 0.0 0.0 0.0 7.2 36.2 157.1 466.4 DAYS WITH PRECIPITATION >=10 5 2 1 0 0 0 0 0 0 0 1 7 16 DAYS WITH PRECIPITATION >= 5 8 3 1 0 0 0 0 0 0 0 2 8 22 DAYS WITH PRECIPITATION >= 1 10 4 2 1 1 0 0 0 0 3 6 13 40 DAYS WITH PRECIPITATION 10 6 5 2 2 1 0 0 0 8 11 17 62 GREATEST DAILY PRECIPITATION 51.0 31.0 26.0 2.0 2.0 0.0 0.0 0.0 0.0 3.0 17.0 30.0 51.0 DAY 28 14 25 29 2