STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -5.6 -3.8 -1.4 5.7 12.7 19.5 24.5 23.8 18.0 10.9 5.6 -1.6 9.0 MINIMUN AIR TEMPERATURE (C) -9.9 -8.2 -5.8 1.3 7.8 12.5 16.9 16.1 11.1 4.4 0.9 -6.2 3.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 0 0 0 0 0 2 DAYS WITH MINIMUM TEMP. <=-4 28 27 22 1 0 0 0 0 0 0 1 20 99 DAYS WITH FREEZING MIN.<= 0 31 28 29 9 0 0 0 0 0 2 8 27 134 TEMPERATURE RECORDS LOWEST(C) -19.0 -17.0 -12.0 -4.0 1.8 8.8 11.6 10.5 6.6 0.0 -4.6 -13.0 -19.0 DAY 27 23 8 1 3 1 1 30 15 7 26 20 MAXIMUM AIR TEMPERATURE (C) -0.8 0.6 2.3 9.4 16.2 23.5 27.9 27.3 21.3 14.3 9.1 2.4 12.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 3 5 0 0 0 0 8 DAYS WITH MAXIMUM TEMP. <= 0 20 10 5 1 0 0 0 0 0 0 0 9 45 TEMPERATURE RECORDS HIGHEST(C) 8.6 6.0 7.6 15.2 21.4 26.8 30.2 30.8 26.4 19.2 13.2 11.5 30.8 DAY 22 2 28 18 17 18 25 16 7 3 2 2 DIF. BETWEEN (MAX.-MIN.) (C) 9.1 8.8 8.1 8.1 8.4 11.0 11.0 11.2 10.2 9.9 8.2 8.6 9.4 MEAN DAILY TEMP. (MDT) (C) -5.4 -3.8 -1.7 5.4 12.0 18.0 22.4 21.7 16.2 9.3 5.0 -1.9 8.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.9 51.6 44.9 0.0 0.0 0.0 0.0 97.4 HEATING DEG. DAYS(BASE 18 0C) 724.9 610.0 611.9 378.9 185.5 26.5 0.2 2.9 71.6 269.0 390.4 616.2 3888.1 DEWPOINT (MEAN C) -10.6 -8.4 -5.6 -1.7 3.4 2.9 3.9 5.2 2.3 -4.6 -3.4 -6.1 -1.9 MIXING RATIO (G/KG) 2.42 2.82 3.43 4.58 6.58 6.41 6.85 7.50 6.18 3.67 4.06 3.38 4.82 VAPOUR PRESSURE (HPA) 2.91 3.40 4.14 5.53 7.94 7.74 8.26 9.04 7.47 4.46 4.93 4.09 5.83 SATURATION DEF. (HPA) 1.37 1.35 1.53 3.85 7.05 15.42 23.03 20.98 13.82 8.96 4.45 1.64 8.62 RELATIVE HUMIDITY (MEAN %) 71 72 75 62 55 35 28 32 38 36 57 74 53 RELATIVE HUMIDITY (MAX. %) 80 85 86 77 72 50 39 44 50 48 70 87 66 RELATIVE HUMIDITY (MIN. %) 61 60 64 50 41 26 22 25 31 28 47 62 43 RELATIVE HUMIDITY (MEAN% 03UTC) 72 71 77 68 66 48 39 43 49 47 59 76 60 RELATIVE HUMIDITY (MEAN% 09UTC) 67 68 69 56 51 31 24 28 34 31 50 69 48 RELATIVE HUMIDITY (MEAN% 15UTC) 74 79 77 61 50 31 24 30 38 37 66 84 54 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 54.5 50.3 54.8 57.4 55.2 2.4 0.0 0.0 36.0 10.0 48.4 86.4 455.4 DAYS WITH PRECIPITATION >=10 3 1 2 1 2 0 0 0 1 1 1 3 15 DAYS WITH PRECIPITATION >= 5 5 5 5 5 3 0 0 0 3 1 3 3 33 DAYS WITH PRECIPITATION >= 1 7 7 8 10 9 1 0 0 3 1 9 9 64 DAYS WITH PRECIPITATION 12 10 16 15 20 4 0 0 3 1 11 13 105 GREATEST DAILY PRECIPITATION 15.0 20.0 16.2 17.0 15.0 1.0 0.0 0.0 21.0 10.0 13.0 25.0 25.0 DAY 15 17 16 25 24 5 ** ** 15 7 26 9 DAY WITH THUNDER STORM 0 0 1 6 8 1 0 0 1 0 0 0 17 DAYS WITH SNOW OR SLEET 11 10 16 7 0 0 0 0 0 1 4 11 60 DAYS WITH DUST 0 0 0 1 1 0 0 0 0 0 0 0 2 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 270 270 270 270 270 45 270 PREVAILING WIND SPEED(KNOTS) 7.6 10.7 9.0 8.7 10.3 9.7 9.6 10.4 10.1 10.2 10.5 11.5 9.9 PREVAILING WIND PERCENT 9.1 13.1 12.4 17.2 28.5 22.8 36.1 54.8 52.0 37.4 22.0 3.9 25.0 CALMS PERCENT OF WIND 82.3 78.0 62.9 57.2 54.3 55.6 32.9 33.5 39.3 55.5 74.7 92.3 60.2 NO. OF WIND OBSERVATION 186 168 186 180 186 171 155 155 150 155 150 155 1997 VECTOR WIND DIRECTION (MEAN) 300 297 24 325 284 284 268 267 271 276 277 24 281 VECTOR WIND MAGNITUDE(KNOTS) 0.5 1.5 1.4 1.4 3.2 2.8 3.1 5.5 5.5 3.7 2.3 0.3 2.4 WIND STEADINESES (MEAN %) 38.5 62.5 35.9 35.0 71.1 66.7 50.0 79.7 90.2 78.7 85.2 33.3 60.0 WIND SPEED (MEAN KNOTS) 1.3 2.4 3.9 4.0 4.5 4.2 6.2 6.9 6.1 4.7 2.7 0.9 4.0 FASTEST WIND DIRECTION 340 300 310 300 270 310 290 270 280 90 30 60 300 FASTEST WIND SPEED (KNOTS) 17 19 19 25 23 16 14 14 16 23 19 19 25 DAY 25 21 23 18 23 3 6 18 15 12 4 14 DAYS WITH SKY CLEAR (0-2)/8 16 15 11 8 4 25 30 30 26 28 19 14 226 DAYS WITH P.CLOUDY (3-6)/8 7 7 12 12 19 5 1 1 3 3 5 13 88 DAYS WITH CLOUDY (7-8)/8 8 6 8 10 8 0 0 0 1 0 6 4 51 DAYS WITH VISIBILITY =< 2 KM 7 5 11 5 3 0 0 0 0 0 1 4 36 DURATION OF SUNSHINE HOURS 168.6 177.3 185.6 186.0 202.9 345.6 371.9 348.2 298.4 298.8 139.4 ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 753.4 753.3 753.8 756.3 758.5 759.3 758.6 758.6 759.7 761.2 761.0 756.9 757.5 MAX. QFE PRESSURE IN HPA 762.5 759.9 761.2 761.9 764.3 764.3 764.0 763.2 762.6 767.9 767.4 765.7 767.9 DAY-HOUR 8- 6 11- 9 26- 9 29-18 16- 6 1- 6 11- 9 17- 6 1- 6 28- 6 5- 6 4- 6 MIN. QFE PRESSURE IN HPA 740.8 744.2 744.9 751.4 752.9 754.8 752.3 754.3 756.7 756.0 755.6 748.9 740.8 DAY-HOUR 24-12 17-15 6-15 1-12 2-18 28-15 27-15 4-15 11-15 4-12 12-12 12- 3 MEAN QNH PRESSURE IN HPA 1017.2 1017.0 1017.7 1020.9 1023.7 1024.7 1023.8 1023.8 1025.2 1027.2 1026.9 1021.6 1022.5 MAX. QNH PRESSURE IN HPA 1028.8 1025.5 1027.1 1028.0 1031.1 1031.1 1030.7 1029.7 1028.9 1035.7 1035.1 1032.9 1035.7 DAY-HOUR 8- 6 11- 9 26- 9 29-18 16- 6 1- 6 11- 9 17- 6 1- 6 28- 6 5- 6 4- 6 MIN. QNH PRESSURE IN HPA 1001.1 1005.5 1006.4 1014.6 1016.6 1019.0 1015.8 1018.3 1021.4 1020.5 1020.0 1011.5 1001.1 DAY-HOUR 24-12 17-15 6-15 1-12 2-18 28-15 27-15 4-15 11-15 4-12 12-12 12- 3 MEAN QFF PRESSURE IN HPA 1023.8 ****** 1019.0 1014.5 1010.0 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1039.8 ****** 1026.9 1020.9 1016.0 ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR 8- 3 **-** 18-15 14- 6 31-18 **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA 1004.6 ****** 1003.3 1008.3 1006.1 ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR 24-15 **-** 5-18 23- 6 13-15 **-** **-** **-** **-** **-** **-** **-** 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 753.0 752.8 753.4 755.9 758.3 759.1 758.7 758.9 759.8 761.1 760.9 756.6 757.4 MAX. QFE PRESSURE IN HPA 761.5 759.0 760.3 760.7 763.4 763.2 763.3 762.2 762.1 767.0 766.6 764.1 767.0 DAY 8 11 26 30 16 1 11 18 2 29 5 4 MIN. QFE PRESSURE IN HPA 743.8 745.2 746.6 752.0 753.5 755.4 753.1 755.0 757.2 756.9 757.0 748.9 743.8 DAY 25 18 7 1 3 29 28 5 11 5 12 12 MEAN QNH PRESSURE IN HPA 1016.7 1016.5 1017.2 1020.4 1023.5 1024.5 1024.0 1024.2 1025.4 1027.0 1026.8 1021.2 1022.3 MAX. QNH PRESSURE IN HPA 1027.5 1024.3 1026.0 1026.5 1030.0 1029.7 1029.8 1028.4 1028.3 1034.5 1034.0 1030.8 1034.5 DAY 8 11 26 30 16 1 11 18 2 29 5 4 MIN. QNH PRESSURE IN HPA 1005.0 1006.7 1008.5 1015.4 1017.3 1019.8 1016.8 1019.2 1022.0 1021.7 1021.8 1011.5 1005.0 DAY 25 18 7 1 3 29 28 5 11 5 12 12 MEAN QFF PRESSURE IN HPA 1023.9 1021.3 1019.3 1014.6 1009.9 1004.8 999.9 1000.6 1007.7 1017.3 1022.1 1024.2 1013.8 MAX. QFF PRESSURE IN HPA 1039.8 1033.2 1026.4 1020.2 1015.5 1015.2 1008.7 1006.7 1015.1 1025.1 1030.2 1031.4 1039.8 DAY 8 23 26 14 7 1 1 18 15 29 26 18 MIN. QFF PRESSURE IN HPA 1007.0 1009.2 1010.2 1010.8 1006.6 997.5 990.0 994.5 1001.0 1006.2 1015.7 1010.8 990.0 DAY 24 18 6 10 29 21 28 5 7 4 13 12 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 754.0 753.7 754.2 756.6 758.9 759.7 759.1 759.2 760.4 761.9 761.8 757.6 758.1 MAX. QFE PRESSURE IN HPA 762.5 759.6 760.9 761.2 764.3 764.3 764.0 763.2 762.6 767.9 767.4 765.7 767.9 DAY 8 11 26 30 16 1 12 17 1 28 5 4 MIN. QFE PRESSURE IN HPA 745.6 746.8 747.0 752.1 753.9 755.8 753.2 755.2 757.6 757.6 757.2 749.4 745.6 DAY 25 28 6 1 3 29 28 5 11 4 12 12 MEAN QNH PRESSURE IN HPA 1018.0 1017.6 1018.3 1021.3 1024.3 1025.2 1024.4 1024.6 1026.1 1028.0 1028.0 1022.5 1023.2 MAX. QNH PRESSURE IN HPA 1028.8 1025.1 1026.8 1027.1 1031.1 1031.1 1030.7 1029.7 1028.9 1035.7 1035.1 1032.9 1035.7 DAY 8 11 26 30 16 1 12 17 1 28 5 4 MIN. QNH PRESSURE IN HPA 1007.2 1008.8 1009.0 1015.5 1017.8 1020.3 1016.9 1019.5 1022.6 1022.6 1022.0 1012.1 1007.2 DAY 25 28 6 1 3 29 28 5 11 4 12 12 MEAN QFF PRESSURE IN HPA 1023.7 1021.0 1018.9 1014.5 1010.3 1006.8 ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1039.2 1030.9 1025.0 1020.9 1014.5 1016.7 ****** ****** ****** ****** ****** ****** ****** DAY 8 23 26 14 22 1 ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1007.6 1011.2 1008.1 1008.3 1007.4 998.8 ****** ****** ****** ****** ****** ****** ****** DAY 24 18 6 23 12 21 ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 753.4 753.6 754.2 756.6 758.8 759.5 758.9 758.9 760.0 761.4 761.1 756.9 757.8 MAX. QFE PRESSURE IN HPA 761.3 759.9 761.2 761.1 763.8 764.3 764.0 762.7 762.5 767.2 766.7 764.7 767.2 DAY 8 11 26 29 16 1 11 17 1 28 5 4 MIN. QFE PRESSURE IN HPA 743.2 746.0 745.4 751.7 753.7 755.8 753.2 755.1 757.2 757.0 756.4 749.0 743.2 DAY 24 17 6 1 3 28 28 28 11 4 12 12 MEAN QNH PRESSURE IN HPA 1017.2 1017.5 1018.2 1021.2 1024.1 1025.0 1024.2 1024.2 1025.6 1027.4 1027.0 1021.6 1022.8 MAX. QNH PRESSURE IN HPA 1027.3 1025.5 1027.1 1027.0 1030.5 1031.1 1030.7 1029.1 1028.8 1034.8 1034.2 1031.6 1034.8 DAY 8 11 26 29 16 1 11 17 1 28 5 4 MIN. QNH PRESSURE IN HPA 1004.2 1007.8 1007.0 1015.0 1017.6 1020.3 1016.9 1019.4 1022.0 1021.8 1021.0 1011.6 1004.2 DAY 24 17 6 1 3 28 28 28 11 4 12 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 752.9 752.9 753.4 756.1 758.2 758.9 758.2 758.0 759.2 760.8 760.4 756.5 757.1 MAX. QFE PRESSURE IN HPA 761.0 758.7 760.0 761.2 763.3 763.1 763.3 761.6 761.6 766.5 766.0 763.3 766.5 DAY 8 10 26 19 16 1 11 17 30 28 5 4 MIN. QFE PRESSURE IN HPA 740.8 744.7 745.0 751.4 753.3 755.2 752.6 754.8 756.9 756.0 755.6 749.1 740.8 DAY 24 17 6 1 3 28 27 4 11 4 12 27 MEAN QNH PRESSURE IN HPA 1016.5 1016.6 1017.2 1020.7 1023.3 1024.2 1023.3 1023.1 1024.6 1026.6 1026.2 1021.1 1022.0 MAX. QNH PRESSURE IN HPA 1026.9 1024.0 1025.6 1027.1 1029.8 1029.6 1029.8 1027.7 1027.7 1033.9 1033.3 1029.8 1033.9 DAY 8 10 26 19 16 1 11 17 30 28 5 4 MIN. QNH PRESSURE IN HPA 1001.1 1006.1 1006.5 1014.6 1017.1 1019.5 1016.2 1019.0 1021.7 1020.5 1020.0 1011.7 1001.1 DAY 24 17 6 1 3 28 27 4 11 4 12 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 753.4 753.1 753.6 756.0 758.1 758.7 758.0 758.0 759.1 761.0 760.8 756.9 757.2 MAX. QFE PRESSURE IN HPA 761.3 758.9 760.2 761.0 763.1 763.2 763.1 761.9 762.0 767.2 765.5 763.6 767.2 DAY 8 10 26 29 16 1 11 17 30 28 1 3 MIN. QFE PRESSURE IN HPA 741.4 744.2 744.9 751.6 753.4 754.8 752.3 754.3 756.7 756.0 755.6 750.0 741.4 DAY 24 17 6 1 3 28 27 4 11 4 12 27 MEAN QNH PRESSURE IN HPA 1017.2 1016.8 1017.4 1020.6 1023.3 1024.0 1023.1 1023.0 1024.4 1026.8 1026.7 1021.6 1022.1 MAX. QNH PRESSURE IN HPA 1027.3 1024.2 1025.9 1026.9 1029.6 1029.7 1029.6 1028.0 1028.2 1034.8 1032.6 1030.2 1034.8 DAY 8 10 26 29 16 1 11 17 30 28 1 3 MIN. QNH PRESSURE IN HPA 1001.9 1005.5 1006.4 1014.9 1017.2 1019.0 1015.8 1018.3 1021.4 1020.5 1020.0 1012.9 1001.9 DAY 24 17 6 1 3 28 27 4 11 4 12 27 MEAN QFF PRESSURE IN HPA 1024.4 1021.5 1019.4 1014.4 1009.7 1004.3 999.0 999.6 1006.9 1017.2 1022.0 1024.6 1013.6 MAX. QFF PRESSURE IN HPA 1039.8 1033.0 1026.9 1019.7 1014.4 1015.9 1008.1 1006.5 1014.2 1025.2 1032.2 1031.9 1039.8 DAY 7 23 18 14 6 1 1 31 30 28 26 22 MIN. QFF PRESSURE IN HPA 1004.6 1006.4 1005.6 1009.5 1006.1 997.0 988.9 994.6 999.6 1006.0 1013.6 1015.1 988.9 DAY 24 17 5 23 13 28 27 4 7 4 12 11 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 753.7 753.6 753.9 756.7 758.7 760.2 ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 761.3 759.4 760.9 761.9 763.2 763.4 ****** ****** ****** ****** ****** ****** ****** DAY 7 10 26 29 16 1 ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA 741.4 744.3 745.3 752.5 752.9 756.5 ****** ****** ****** ****** ****** ****** ****** DAY 24 17 5 1 2 21 ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1017.6 1017.4 1017.9 1021.4 1024.0 1025.8 ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1027.3 1024.9 1026.8 1028.0 1029.7 1030.0 ****** ****** ****** ****** ****** ****** ****** DAY 7 10 26 29 16 1 ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1001.9 1005.6 1006.9 1016.1 1016.6 1021.2 ****** ****** ****** ****** ****** ****** ****** DAY 24 17 5 1 2 21 ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1023.4 1020.9 1018.4 1014.4 1010.0 1006.4 ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1036.8 1030.1 1025.1 1020.5 1016.0 1014.7 ****** ****** ****** ****** ****** ****** ****** DAY 7 11 18 14 31 1 ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1005.8 1007.0 1003.3 1009.0 1006.1 998.1 ****** ****** ****** ****** ****** ****** ****** DAY 24 17 5 23 28 21 ** ** ** ** ** ** 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 ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -2.4 -4.4 2.7 8.4 9.4 19.9 21.7 23.2 17.7 9.2 3.1 -5.3 8.6 MINIMUN AIR TEMPERATURE (C) -6.9 -9.1 -1.3 3.2 4.2 12.8 15.4 16.1 11.1 3.6 -0.7 -9.9 3.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 1 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 27 27 6 0 1 0 0 0 0 0 5 30 96 DAYS WITH FREEZING MIN.<= 0 31 27 20 5 2 0 0 0 0 6 20 31 142 TEMPERATURE RECORDS LOWEST(C) -13.0 -15.4 -9.8 -1.6 -4.0 6.2 12.6 13.0 7.8 -3.4 -6.0 -14.0 -15.4 DAY 31 2 17 4 2 1 5 12 28 21 16 21 MAXIMUM AIR TEMPERATURE (C) 1.5 -0.6 5.9 12.0 12.8 23.4 25.8 26.9 21.6 12.8 6.4 -1.2 12.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MAXIMUM TEMP. <= 0 10 19 0 0 0 0 0 0 0 0 0 22 51 TEMPERATURE RECORDS HIGHEST(C) 8.8 8.4 13.4 17.8 18.6 27.2 28.0 29.0 27.4 17.5 13.6 7.4 29.0 DAY 5 12 11 20 29 21 27 17 3 6 3 12 DIF. BETWEEN (MAX.-MIN.) (C) 8.4 8.5 7.2 8.8 8.6 10.6 10.4 10.8 10.5 9.2 7.1 8.7 9.1 MEAN DAILY TEMP. (MDT) (C) -2.7 -4.9 2.3 7.6 8.5 18.1 20.6 21.5 16.3 8.2 2.8 -5.5 7.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 3.9 9.3 24.3 2.5 0.0 0.0 0.0 40.1 HEATING DEG. DAYS(BASE 18 0C) 641.3 663.1 488.1 311.8 295.3 32.7 0.0 0.3 66.8 294.5 455.0 729.4 3978.4 DEWPOINT (MEAN C) -7.3 -9.2 -3.6 -3.1 0.8 2.7 1.6 2.5 -0.8 -5.0 -2.8 -8.7 -2.7 MIXING RATIO (G/KG) 3.06 2.68 4.02 4.20 5.49 6.24 5.80 6.26 4.87 3.58 4.17 2.73 4.42 VAPOUR PRESSURE (HPA) 3.69 3.24 4.85 5.07 6.61 7.52 7.01 7.54 5.91 4.36 5.05 3.30 5.35 SATURATION DEF. (HPA) 1.63 1.39 2.76 6.24 5.53 16.27 19.26 21.46 14.92 7.73 2.86 0.94 8.42 RELATIVE HUMIDITY (MEAN %) 71 72 66 47 58 34 28 28 30 39 68 79 52 RELATIVE HUMIDITY (MAX. %) 83 85 77 62 72 47 37 40 43 55 81 88 64 RELATIVE HUMIDITY (MIN. %) 60 58 55 36 47 27 21 21 23 28 55 67 42 RELATIVE HUMIDITY (MEAN% 03UTC) 69 74 71 59 68 45 35 40 43 50 73 80 59 RELATIVE HUMIDITY (MEAN% 09UTC) 68 66 62 42 54 30 23 23 24 32 60 74 47 RELATIVE HUMIDITY (MEAN% 15UTC) 81 80 69 46 58 31 28 27 31 46 77 83 55 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 42.8 61.7 108.6 57.0 91.9 11.3 1.3 0.2 0.0 10.2 89.6 77.0 551.6 DAYS WITH PRECIPITATION >=10 1 3 5 3 1 1 0 0 0 0 3 3 20 DAYS WITH PRECIPITATION >= 5 5 4 7 3 5 1 0 0 0 1 5 7 38 DAYS WITH PRECIPITATION >= 1 8 13 12 5 10 1 0 0 0 3 13 10 75 DAYS WITH PRECIPITATION 9 17 15 5 14 2 4 1 0 4 15 11 97 GREATEST DAILY PRECIPITATION 14.0 11.0 22.0 24.0 41.1 11.1 0.8 0.2 0.0 5.0 28.3 15.0 41.1 DAY 29 5 16 22 17 7 22 11 ** 19 12 1 DAY WITH THUNDER STORM 0 0 1 0 1 0 0 0 0 1 1 1 5 DAYS WITH SNOW OR SLEET 7 17 10 1 2 0 0 0 0 1 11 11 60 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 45 270 270 270 270 270 270 270 270 270 270 360 270 PREVAILING WIND SPEED(KNOTS) 15.6 9.0 8.3 10.6 8.7 7.2 7.6 7.5 7.5 8.4 8.5 10.8 8.3 PREVAILING WIND PERCENT 4.5 4.1 16.8 42.0 34.8 22.2 18.7 35.5 48.0 38.7 17.3 3.2 23.6 CALMS PERCENT OF WIND 90.3 93.8 74.8 44.7 54.8 50.3 49.0 31.0 30.0 46.5 74.0 89.0 60.6 NO. OF WIND OBSERVATION 155 145 155 150 155 153 155 155 150 155 150 155 1833 VECTOR WIND DIRECTION (MEAN) 26 275 269 274 279 271 351 265 269 278 273 17 280 VECTOR WIND MAGNITUDE(KNOTS) 0.9 0.4 1.5 5.1 2.8 1.5 1.5 2.6 3.8 3.6 1.5 0.6 1.9 WIND STEADINESES (MEAN %) 69.2 66.7 68.2 89.5 70.0 39.5 35.7 53.1 73.1 78.3 71.4 54.5 57.6 WIND SPEED (MEAN KNOTS) 1.3 0.6 2.2 5.7 4.0 3.8 4.2 4.9 5.2 4.6 2.1 1.1 3.3 FASTEST WIND DIRECTION 30 290 240 270 270 360 90 360 260 280 280 60 280 FASTEST WIND SPEED (KNOTS) 19 16 16 19 17 14 19 16 12 29 16 29 29 DAY 17 29 12 10 15 29 21 11 6 19 13 7 DAYS WITH SKY CLEAR (0-2)/8 16 11 5 14 11 27 19 27 30 22 12 17 211 DAYS WITH P.CLOUDY (3-6)/8 8 8 14 12 11 3 11 4 0 6 8 6 91 DAYS WITH CLOUDY (7-8)/8 7 10 12 4 9 0 1 0 0 3 10 8 64 DAYS WITH VISIBILITY =< 2 KM 3 7 3 0 1 0 0 0 0 1 6 9 30 DURATION OF SUNSHINE HOURS ****** ****** 133.8 235.2 206.0 336.8 295.9 311.5 300.1 243.3 126.0 153.3 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 754.7 756.0 754.6 756.0 756.2 758.1 758.9 757.8 761.2 761.5 758.8 756.4 757.5 MAX. QFE PRESSURE IN HPA 763.7 762.2 762.0 761.7 761.2 762.3 761.8 760.5 765.0 766.8 767.1 762.5 767.1 DAY-HOUR 4-15 23- 6 4- 6 14- 9 17- 6 5- 6 23- 6 20- 6 22- 6 9- 6 27- 6 16- 6 MIN. QFE PRESSURE IN HPA 745.8 748.0 743.6 750.6 751.0 752.7 755.7 754.9 756.3 752.0 751.8 748.9 743.6 DAY-HOUR 29-12 8-12 16- 3 26-12 1-15 20-15 15-15 8-12 8-15 23- 6 12- 3 7- 3 MEAN QNH PRESSURE IN HPA 1018.8 1020.5 1018.7 1020.5 1020.7 1023.2 1024.3 1022.8 1027.2 1027.6 1024.1 1021.1 1022.4 MAX. QNH PRESSURE IN HPA 1030.3 1028.4 1028.2 1027.8 1027.1 1028.5 1027.9 1026.3 1032.0 1034.3 1034.7 1028.8 1034.7 DAY-HOUR 4-15 23- 6 4- 6 14- 9 17- 6 5- 6 23- 6 20- 6 22- 6 9- 6 27- 6 16- 6 MIN. QNH PRESSURE IN HPA 1007.5 1010.3 1004.7 1013.6 1014.1 1016.3 1020.1 1019.1 1020.9 1015.4 1015.2 1011.5 1004.7 DAY-HOUR 29-12 8-12 16- 3 26-12 1-15 20-15 15-15 8-12 8-15 23- 6 12- 3 7- 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 754.3 755.7 754.2 756.0 756.0 758.2 759.1 758.0 761.3 761.5 758.8 756.3 757.4 MAX. QFE PRESSURE IN HPA 762.0 761.0 761.2 761.2 760.8 761.4 761.2 760.3 764.0 766.3 765.7 761.5 766.3 DAY 5 23 29 14 17 5 23 20 12 9 27 16 MIN. QFE PRESSURE IN HPA 747.0 749.0 743.6 751.2 751.7 753.0 756.3 756.1 757.0 753.3 751.8 748.9 743.6 DAY 29 8 16 26 29 21 16 8 9 18 12 7 MEAN QNH PRESSURE IN HPA 1018.4 1020.1 1018.2 1020.5 1020.5 1023.3 1024.4 1023.0 1027.3 1027.6 1024.1 1020.9 1022.4 MAX. QNH PRESSURE IN HPA 1028.2 1026.9 1027.1 1027.1 1026.6 1027.4 1027.1 1026.0 1030.7 1033.7 1032.9 1027.5 1033.7 DAY 5 23 29 14 17 5 23 20 12 9 27 16 MIN. QNH PRESSURE IN HPA 1009.0 1011.6 1004.7 1014.4 1015.0 1016.7 1020.9 1020.6 1021.8 1017.1 1015.2 1011.5 1004.7 DAY 29 8 16 26 29 21 16 8 9 18 12 7 MEAN QFF PRESSURE IN HPA 1022.1 1026.6 1016.0 1012.4 1010.6 1003.3 1003.4 1000.6 1010.7 1019.7 1021.5 1028.1 1014.6 MAX. QFF PRESSURE IN HPA 1029.6 1037.5 1026.5 1020.3 1021.4 1009.6 1008.5 1004.6 1017.1 1031.7 1030.9 1037.1 1037.5 DAY 5 19 1 14 17 1 22 30 26 22 27 16 MIN. QFF PRESSURE IN HPA 1012.6 1012.6 1005.0 1004.8 999.5 993.8 997.8 995.2 1002.8 1006.5 1012.5 1015.2 993.8 DAY 29 14 12 17 29 21 16 16 1 18 12 7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 755.4 756.6 755.1 756.7 756.7 758.7 759.6 758.6 762.0 761.9 759.5 757.2 758.1 MAX. QFE PRESSURE IN HPA 763.0 762.2 762.0 761.5 761.2 762.3 761.8 760.5 765.0 766.8 767.1 762.5 767.1 DAY 4 23 4 14 17 5 23 20 22 9 27 16 MIN. QFE PRESSURE IN HPA 746.5 749.2 743.8 751.6 752.1 754.0 756.7 756.4 757.5 752.0 752.5 749.9 743.8 DAY 29 8 16 26 29 20 16 8 8 23 12 7 MEAN QNH PRESSURE IN HPA 1019.7 1021.3 1019.4 1021.4 1021.4 1024.0 1025.1 1023.8 1028.1 1028.1 1025.0 1022.0 1023.3 MAX. QNH PRESSURE IN HPA 1029.4 1028.4 1028.2 1027.5 1027.1 1028.5 1027.9 1026.3 1032.0 1034.3 1034.7 1028.8 1034.7 DAY 4 23 4 14 17 5 23 20 22 9 27 16 MIN. QNH PRESSURE IN HPA 1008.4 1011.8 1005.0 1014.9 1015.5 1018.0 1021.4 1021.0 1022.4 1015.4 1016.1 1012.7 1005.0 DAY 29 8 16 26 29 20 16 8 8 23 12 7 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 754.7 756.2 754.9 756.3 756.4 758.4 759.2 758.1 761.5 761.7 758.8 756.4 757.7 MAX. QFE PRESSURE IN HPA 762.7 760.8 761.6 761.7 760.7 761.7 761.1 760.3 764.5 766.8 766.0 761.9 766.8 DAY 4 22 4 14 17 4 22 20 22 9 27 16 MIN. QFE PRESSURE IN HPA 746.2 749.0 745.2 751.4 752.0 753.6 756.8 756.0 757.3 753.1 752.1 749.1 745.2 DAY 29 8 15 26 29 20 16 8 8 19 12 7 MEAN QNH PRESSURE IN HPA 1018.9 1020.8 1019.1 1020.9 1021.1 1023.6 1024.6 1023.1 1027.6 1027.8 1024.1 1021.1 1022.7 MAX. QNH PRESSURE IN HPA 1029.1 1026.6 1027.7 1027.8 1026.5 1027.8 1027.0 1026.0 1031.4 1034.3 1033.3 1028.0 1034.3 DAY 4 22 4 14 17 4 22 20 22 9 27 16 MIN. QNH PRESSURE IN HPA 1008.0 1011.6 1006.7 1014.6 1015.4 1017.5 1021.5 1020.5 1022.2 1016.8 1015.5 1011.7 1006.7 DAY 29 8 15 26 29 20 16 8 8 19 12 7 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 754.3 755.6 754.2 755.6 755.9 757.8 758.5 757.2 760.8 761.2 758.4 756.1 757.1 MAX. QFE PRESSURE IN HPA 762.8 760.1 760.9 760.3 760.0 761.0 760.9 759.2 763.6 766.3 764.7 761.8 766.3 DAY 4 18 4 14 12 4 22 20 22 9 27 18 MIN. QFE PRESSURE IN HPA 745.8 748.0 744.6 750.6 751.6 753.1 756.0 754.9 756.6 754.4 752.1 750.1 744.6 DAY 29 8 15 26 5 20 15 8 8 17 12 7 MEAN QNH PRESSURE IN HPA 1018.3 1020.0 1018.2 1020.0 1020.3 1022.8 1023.6 1022.1 1026.6 1027.1 1023.5 1020.6 1021.9 MAX. QNH PRESSURE IN HPA 1029.2 1025.7 1026.8 1026.0 1025.6 1026.9 1026.8 1024.6 1030.2 1033.7 1031.6 1027.9 1033.7 DAY 4 18 4 14 12 4 22 20 22 9 27 18 MIN. QNH PRESSURE IN HPA 1007.5 1010.3 1006.0 1013.6 1014.9 1016.8 1020.5 1019.1 1021.3 1018.5 1015.5 1013.0 1006.0 DAY 29 8 15 26 5 20 15 8 8 17 12 7 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 754.6 755.9 754.4 755.6 756.0 757.6 758.4 757.2 760.7 761.4 758.6 756.3 757.2 MAX. QFE PRESSURE IN HPA 763.7 760.7 760.8 760.2 760.3 761.4 761.2 759.5 763.4 766.3 764.7 762.1 766.3 DAY 4 22 4 14 17 4 22 20 22 10 27 18 MIN. QFE PRESSURE IN HPA 746.1 748.0 745.3 752.0 751.0 752.7 755.7 754.9 756.3 754.4 752.7 750.7 745.3 DAY 29 8 14 25 1 20 15 8 8 17 12 7 MEAN QNH PRESSURE IN HPA 1018.7 1020.3 1018.4 1020.0 1020.5 1022.5 1023.6 1022.0 1026.5 1027.4 1023.9 1020.9 1022.1 MAX. QNH PRESSURE IN HPA 1030.3 1026.5 1026.6 1025.9 1026.0 1027.4 1027.1 1025.0 1030.0 1033.7 1031.6 1028.3 1033.7 DAY 4 22 4 14 17 4 22 20 22 10 27 18 MIN. QNH PRESSURE IN HPA 1007.9 1010.3 1006.9 1015.4 1014.1 1016.3 1020.1 1019.1 1020.9 1018.5 1016.3 1013.8 1006.9 DAY 29 8 14 25 1 20 15 8 8 17 12 7 MEAN QFF PRESSURE IN HPA 1022.5 1026.6 1015.8 1011.7 1010.6 1002.4 1002.5 999.7 1010.0 1019.5 1021.4 1028.2 1014.2 MAX. QFF PRESSURE IN HPA 1034.0 1037.6 1026.1 1019.5 1017.5 1008.6 1008.1 1003.5 1017.6 1030.4 1029.3 1037.3 1037.6 DAY 4 18 1 1 16 1 22 29 26 21 27 20 MIN. QFF PRESSURE IN HPA 1015.0 1010.5 999.2 1004.4 999.1 993.7 998.7 995.2 1002.8 1008.1 1013.7 1015.2 993.7 DAY 16 8 12 9 29 20 15 15 1 17 12 14 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 ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.3 -2.9 -0.5 7.6 13.1 18.9 21.4 17.2 16.8 8.6 3.8 -2.7 8.3 MINIMUN AIR TEMPERATURE (C) -6.0 -7.8 -5.9 3.5 7.7 13.5 16.1 12.3 11.8 4.9 1.1 -5.2 3.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 20 21 15 0 0 0 0 0 0 0 0 20 76 DAYS WITH FREEZING MIN.<= 0 30 28 22 4 0 0 0 0 0 1 13 30 128 TEMPERATURE RECORDS LOWEST(C) -13.2 -18.6 -18.5 -1.0 2.8 8.0 12.6 7.4 8.6 0.0 -2.0 -11.5 -18.6 DAY 18 7 11 8 5 11 28 26 28 31 21 5 MAXIMUM AIR TEMPERATURE (C) 3.2 0.5 2.8 12.4 18.3 24.2 26.8 22.7 22.4 13.2 7.3 0.7 12.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MAXIMUM TEMP. <= 0 5 11 11 0 0 0 0 0 0 0 0 15 42 TEMPERATURE RECORDS HIGHEST(C) 8.5 8.5 11.8 19.4 24.6 29.4 29.0 26.4 25.6 19.8 12.6 6.5 29.4 DAY 28 15 29 21 31 26 20 6 3 1 4 10 DIF. BETWEEN (MAX.-MIN.) (C) 9.2 8.3 8.7 8.9 10.6 10.7 10.7 10.4 10.6 8.3 6.2 5.9 9.1 MEAN DAILY TEMP. (MDT) (C) -1.4 -3.7 -1.5 7.9 13.0 18.9 21.5 17.5 17.1 9.0 4.2 -2.3 8.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 8.0 29.3 0.4 0.0 0.0 0.0 0.0 37.7 HEATING DEG. DAYS(BASE 18 0C) 581.9 606.2 605.9 292.6 151.9 23.1 0.0 41.4 38.1 278.6 413.7 628.5 3662.0 DEWPOINT (MEAN C) -8.1 -9.8 -7.1 -2.4 -1.7 0.5 3.0 3.3 -0.5 -2.4 -1.3 -7.1 -2.8 MIXING RATIO (G/KG) 3.02 2.64 3.28 4.33 4.64 5.38 6.43 6.60 4.96 4.40 4.64 3.08 4.45 VAPOUR PRESSURE (HPA) 3.65 3.17 3.96 5.23 5.61 6.50 7.76 7.98 6.02 5.34 5.63 3.73 5.38 SATURATION DEF. (HPA) 2.05 2.02 2.46 5.62 9.97 15.93 18.33 12.25 13.59 6.14 2.58 1.43 7.70 RELATIVE HUMIDITY (MEAN %) 65 63 65 52 39 32 32 43 33 49 72 73 52 RELATIVE HUMIDITY (MAX. %) 78 77 80 71 57 45 46 61 47 66 83 86 66 RELATIVE HUMIDITY (MIN. %) 55 51 51 36 25 21 21 29 22 35 60 61 39 RELATIVE HUMIDITY (MEAN% 03UTC) 68 64 68 62 47 40 42 54 41 59 72 70 57 RELATIVE HUMIDITY (MEAN% 09UTC) 60 62 60 42 28 25 24 33 24 39 65 71 44 RELATIVE HUMIDITY (MEAN% 15UTC) 71 68 67 49 31 26 26 36 29 47 75 76 50 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 123.8 56.5 76.8 26.6 4.2 13.7 0.8 24.3 0.2 6.8 67.9 115.7 517.3 DAYS WITH PRECIPITATION >=10 4 1 1 1 0 1 0 1 0 0 3 2 14 DAYS WITH PRECIPITATION >= 5 8 5 4 1 0 1 0 3 0 1 3 8 34 DAYS WITH PRECIPITATION >= 1 12 9 12 4 2 2 0 4 0 1 6 17 69 DAYS WITH PRECIPITATION 12 11 15 10 5 7 3 5 1 5 8 18 100 GREATEST DAILY PRECIPITATION 27.0 21.0 27.0 14.9 1.6 11.0 0.5 11.0 0.2 6.4 27.0 30.0 30.0 DAY 24 2 20 6 11 11 17 28 24 12 26 19 DAY WITH THUNDER STORM 0 0 1 4 0 2 0 5 0 0 0 0 12 DAYS WITH SNOW OR SLEET 9 11 10 3 0 0 0 0 0 1 5 17 56 DAYS WITH DUST 0 0 0 0 1 2 0 0 0 0 0 0 3 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 270 270 270 225 225 270 270 PREVAILING WIND SPEED(KNOTS) 7.5 11.8 9.6 8.6 8.7 8.6 6.7 7.1 7.3 7.9 6.3 8.9 8.4 PREVAILING WIND PERCENT 10.3 32.1 22.3 30.8 29.0 19.6 25.8 37.9 19.2 18.1 14.2 6.9 21.4 CALMS PERCENT OF WIND 79.4 54.3 60.9 40.4 46.8 36.7 35.1 40.3 45.8 53.6 74.6 74.6 52.5 NO. OF WIND OBSERVATION 155 140 184 240 248 240 248 248 240 248 240 248 2679 VECTOR WIND DIRECTION (MEAN) 287 275 274 286 281 348 253 278 278 260 239 14 278 VECTOR WIND MAGNITUDE(KNOTS) 0.9 4.1 1.8 2.6 2.8 1.1 1.3 2.9 1.4 2.4 0.9 0.6 1.7 WIND STEADINESES (MEAN %) 52.9 80.4 54.5 55.3 65.1 20.8 30.2 64.4 33.3 57.1 52.9 21.4 44.7 WIND SPEED (MEAN KNOTS) 1.7 5.1 3.3 4.7 4.3 5.3 4.3 4.5 4.2 4.2 1.7 2.8 3.8 FASTEST WIND DIRECTION 30 270 270 280 270 30 330 360 30 30 270 120 270 FASTEST WIND SPEED (KNOTS) 19 35 19 29 29 19 23 19 29 31 16 31 35 DAY 24 21 23 15 4 18 28 11 20 11 2 29 DAYS WITH SKY CLEAR (0-2)/8 19 14 12 13 16 24 25 23 29 21 10 9 215 DAYS WITH P.CLOUDY (3-6)/8 6 5 10 10 14 6 4 7 1 8 11 11 93 DAYS WITH CLOUDY (7-8)/8 6 9 9 7 1 0 2 1 0 2 9 11 57 DAYS WITH VISIBILITY =< 2 KM 6 6 1 0 0 0 0 0 0 0 5 8 26 DURATION OF SUNSHINE HOURS 176.5 161.0 180.8 229.9 304.2 321.7 326.6 ****** 292.1 251.7 150.3 121.2 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 754.8 750.0 755.2 756.1 758.8 757.8 758.3 760.5 761.1 760.5 760.5 755.7 757.4 MAX. QFE PRESSURE IN HPA 761.5 759.2 761.8 763.4 765.4 761.7 762.0 764.5 766.7 765.3 765.0 764.1 766.7 DAY-HOUR 14- 9 12- 6 5- 9 17- 6 12-18 6- 6 16- 6 13- 6 22- 6 31-21 1- 6 9- 6 MIN. QFE PRESSURE IN HPA 745.5 739.5 746.5 752.1 753.1 754.2 753.7 755.9 756.5 754.5 757.1 744.0 739.5 DAY-HOUR 2-15 26-12 24- 3 11- 3 2-12 20-15 26-15 27-15 7-12 11- 0 7-12 19- 0 MEAN QNH PRESSURE IN HPA 1019.0 1012.9 1019.5 1020.7 1024.0 1022.9 1023.5 1026.2 1027.1 1026.2 1026.2 1020.1 1022.4 MAX. QNH PRESSURE IN HPA 1027.5 1024.6 1027.9 1030.0 1032.5 1027.8 1028.2 1031.4 1034.2 1032.4 1032.0 1030.8 1034.2 DAY-HOUR 14- 9 12- 6 5- 9 17- 6 12-18 6- 6 16- 6 13- 6 22- 6 31-21 1- 6 9- 6 MIN. QNH PRESSURE IN HPA 1007.1 999.5 1008.4 1015.5 1016.8 1018.2 1017.6 1020.4 1021.2 1018.6 1021.9 1005.2 999.5 DAY-HOUR 2-15 26-12 24- 3 11- 3 2-12 20-15 26-15 27-15 7-12 11- 0 7-12 19- 0 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1011.2 1009.2 1002.3 1000.3 1007.1 1008.7 1015.9 1020.8 1021.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1024.2 1019.5 1012.1 1006.6 1014.8 1019.6 1028.0 1028.0 1032.8 ****** DAY-HOUR **-** **-** **-** 17- 6 12-18 11-12 29- 6 13- 6 22- 6 31-18 19- 6 14-15 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1000.5 1002.6 996.1 992.3 999.5 999.9 1005.8 1013.0 1002.5 ****** DAY-HOUR **-** **-** **-** 24- 0 31-21 20-15 26-12 8-12 7-12 11- 0 10-21 19- 9 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 755.9 758.5 757.7 758.1 760.3 761.0 760.4 760.3 755.4 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 762.0 764.1 760.7 760.9 763.6 765.6 764.6 764.2 762.9 ****** DAY ** ** ** 17 13 6 16 14 23 7 1 9 MIN. QFE PRESSURE IN HPA ****** ****** ****** 752.6 753.9 755.0 754.2 757.0 756.9 754.5 757.9 744.0 ****** DAY ** ** ** 7 4 21 27 28 7 11 11 19 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1020.3 1023.7 1022.6 1023.1 1026.0 1026.9 1026.1 1026.0 1019.8 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1028.2 1030.8 1026.5 1026.8 1030.2 1032.8 1031.5 1031.0 1029.3 ****** DAY ** ** ** 17 13 6 16 14 23 7 1 9 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1016.2 1017.8 1019.2 1018.2 1021.8 1021.7 1018.6 1022.9 1005.2 ****** DAY ** ** ** 7 4 21 27 28 7 11 11 19 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.5 1008.9 1002.2 999.8 1006.4 1008.1 1015.0 1020.2 1021.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1020.8 1017.8 1010.4 1004.2 1012.8 1016.6 1020.7 1025.7 1029.8 ****** DAY ** ** ** 17 12 12 17 13 23 14 19 15 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1000.5 1003.1 996.7 994.6 1000.2 1000.0 1005.8 1013.5 1003.3 ****** DAY ** ** ** 24 31 21 27 8 7 11 11 19 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 754.6 749.9 755.2 755.9 758.8 758.0 758.4 760.6 761.2 760.4 760.3 755.4 757.4 MAX. QFE PRESSURE IN HPA 759.9 758.6 760.8 762.0 764.2 761.0 761.4 763.9 765.9 764.4 764.3 762.7 765.9 DAY 14 12 6 17 12 6 16 14 22 7 1 9 MIN. QFE PRESSURE IN HPA 749.1 740.7 746.5 752.1 753.8 755.2 754.7 757.2 756.9 754.9 757.1 744.9 740.7 DAY 2 6 24 11 1 21 27 28 7 11 11 19 MEAN QNH PRESSURE IN HPA 1018.8 1012.8 1019.6 1020.4 1024.0 1023.0 1023.6 1026.4 1027.1 1026.1 1026.1 1019.8 1022.3 MAX. QNH PRESSURE IN HPA 1025.5 1023.8 1026.6 1028.2 1031.0 1026.9 1027.4 1030.6 1033.1 1031.2 1031.1 1029.1 1033.1 DAY 14 12 6 17 12 6 16 14 22 7 1 9 MIN. QNH PRESSURE IN HPA 1011.7 1001.0 1008.4 1015.5 1017.7 1019.5 1018.9 1022.0 1021.7 1019.1 1021.9 1006.4 1001.0 DAY 2 6 24 11 1 21 27 28 7 11 11 19 MEAN QFF PRESSURE IN HPA 1021.7 1016.6 1022.0 1012.0 1009.7 1002.8 1000.9 1008.0 1009.9 1016.6 1021.5 1021.9 1013.6 MAX. QFF PRESSURE IN HPA 1029.4 1029.5 1039.4 1023.6 1018.7 1010.8 1004.8 1014.4 1017.5 1022.6 1027.7 1030.3 1039.4 DAY 25 24 6 17 12 10 18 12 22 31 1 22 MIN. QFF PRESSURE IN HPA 1014.2 1002.7 1000.8 1002.4 1004.5 997.0 995.6 1002.6 1001.4 1008.3 1013.6 1003.3 995.6 DAY 2 6 24 24 27 21 27 7 7 11 11 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 755.4 750.6 756.1 756.7 759.3 758.4 758.9 761.1 761.9 761.2 761.1 756.2 758.1 MAX. QFE PRESSURE IN HPA 760.5 759.2 761.4 763.4 765.2 761.7 762.0 764.5 766.7 765.0 765.0 764.1 766.7 DAY 14 12 5 17 12 6 16 13 22 6 1 9 MIN. QFE PRESSURE IN HPA 748.6 741.4 746.5 753.5 754.4 755.8 755.4 757.5 757.8 755.7 758.0 745.9 741.4 DAY 2 6 24 8 1 19 26 27 7 11 11 19 MEAN QNH PRESSURE IN HPA 1019.7 1013.6 1020.6 1021.4 1024.8 1023.6 1024.3 1027.0 1028.1 1027.2 1027.0 1020.8 1023.2 MAX. QNH PRESSURE IN HPA 1026.3 1024.6 1027.4 1030.0 1032.2 1027.8 1028.2 1031.4 1034.2 1032.0 1032.0 1030.8 1034.2 DAY 14 12 5 17 12 6 16 13 22 6 1 9 MIN. QNH PRESSURE IN HPA 1011.1 1001.9 1008.4 1017.3 1018.5 1020.3 1019.8 1022.4 1022.8 1020.1 1023.1 1007.6 1001.9 DAY 2 6 24 8 1 19 26 27 7 11 11 19 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1011.9 1009.7 1003.0 1001.2 1008.1 1009.6 1017.0 1021.8 1022.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1024.2 1019.3 1009.9 1006.6 1014.8 1019.6 1023.1 1028.0 1031.1 ****** DAY ** ** ** 17 12 10 29 13 22 31 19 14 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1005.5 1004.3 997.7 994.6 1001.8 1001.8 1008.6 1013.9 1003.1 ****** DAY ** ** ** 24 27 21 26 8 7 11 11 19 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 754.8 750.2 755.9 756.5 759.0 758.2 758.7 760.7 761.5 760.7 760.7 755.7 757.7 MAX. QFE PRESSURE IN HPA 761.5 759.1 761.8 763.3 764.8 761.7 761.6 764.1 766.1 764.6 764.5 763.7 766.1 DAY 14 12 5 17 12 6 16 13 22 6 17 9 MIN. QFE PRESSURE IN HPA 746.5 741.7 747.2 752.9 754.4 755.6 755.0 757.1 757.3 755.4 758.2 745.0 741.7 DAY 2 6 24 6 5 19 26 27 7 11 11 19 MEAN QNH PRESSURE IN HPA 1019.0 1013.2 1020.4 1021.1 1024.3 1023.4 1023.9 1026.5 1027.5 1026.5 1026.6 1020.2 1022.7 MAX. QNH PRESSURE IN HPA 1027.5 1024.5 1027.9 1029.8 1031.7 1027.8 1027.7 1030.8 1033.4 1031.5 1031.4 1030.3 1033.4 DAY 14 12 5 17 12 6 16 13 22 6 17 9 MIN. QNH PRESSURE IN HPA 1008.4 1002.3 1009.3 1016.6 1018.5 1020.0 1019.2 1021.9 1022.2 1019.8 1023.3 1006.5 1002.3 DAY 2 6 24 6 5 19 26 27 7 11 11 19 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1011.0 1009.3 1002.5 1000.4 1006.8 1008.5 1015.6 1020.8 1021.1 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1023.5 1018.8 1009.7 1006.0 1014.0 1017.1 1023.0 1027.1 1029.2 ****** DAY ** ** ** 17 12 10 29 13 22 31 19 14 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1005.1 1004.1 998.0 993.6 999.8 1000.9 1008.0 1014.1 1002.5 ****** DAY ** ** ** 24 31 21 26 8 7 11 11 19 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 754.5 749.5 755.3 755.7 758.2 757.5 757.9 759.9 760.7 760.0 760.0 755.2 757.0 MAX. QFE PRESSURE IN HPA 760.6 758.2 761.1 762.1 764.5 760.5 761.1 763.0 765.3 764.0 763.8 763.1 765.3 DAY 14 12 5 17 12 5 16 13 22 6 17 9 MIN. QFE PRESSURE IN HPA 745.9 739.5 746.5 752.5 753.1 754.7 753.9 756.2 756.5 755.0 757.1 745.0 739.5 DAY 2 26 24 6 2 19 26 27 7 10 7 19 MEAN QNH PRESSURE IN HPA 1018.6 1012.3 1019.7 1020.2 1023.4 1022.4 1022.9 1025.5 1026.5 1025.6 1025.6 1019.5 1021.8 MAX. QNH PRESSURE IN HPA 1026.4 1023.3 1027.0 1028.3 1031.4 1026.3 1027.0 1029.4 1032.4 1030.7 1030.5 1029.6 1032.4 DAY 14 12 5 17 12 5 16 13 22 6 17 9 MIN. QNH PRESSURE IN HPA 1007.6 999.5 1008.4 1016.1 1016.8 1018.9 1017.8 1020.8 1021.2 1019.2 1021.9 1006.5 999.5 DAY 2 26 24 6 2 19 26 27 7 10 7 19 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.3 1008.6 1002.0 999.6 1005.9 1007.7 1014.7 1019.8 1020.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1021.7 1018.9 1012.1 1005.4 1011.9 1016.0 1023.9 1026.6 1030.1 ****** DAY ** ** ** 17 12 11 16 13 22 31 19 14 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1004.5 1002.7 997.7 992.3 999.5 999.9 1006.6 1013.5 1004.3 ****** DAY ** ** ** 24 2 20 26 8 7 10 7 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 754.8 749.8 755.5 755.8 758.4 757.2 757.8 759.9 760.7 760.1 760.3 755.7 757.2 MAX. QFE PRESSURE IN HPA 760.3 758.1 761.4 761.8 764.4 760.2 760.7 763.1 765.5 764.6 764.1 763.0 765.5 DAY 14 12 16 17 12 5 16 13 22 6 17 9 MIN. QFE PRESSURE IN HPA 745.5 740.7 747.7 752.4 753.4 754.2 753.7 755.9 756.7 754.6 758.0 745.9 740.7 DAY 2 26 24 6 4 20 26 27 6 10 7 19 MEAN QNH PRESSURE IN HPA 1019.0 1012.5 1019.8 1020.3 1023.6 1022.1 1022.8 1025.5 1026.5 1025.8 1026.0 1020.2 1022.0 MAX. QNH PRESSURE IN HPA 1026.0 1023.2 1027.4 1027.9 1031.2 1025.9 1026.5 1029.6 1032.6 1031.5 1030.8 1029.4 1032.6 DAY 14 12 16 17 12 5 16 13 22 6 17 9 MIN. QNH PRESSURE IN HPA 1007.1 1001.0 1009.9 1015.9 1017.2 1018.2 1017.6 1020.4 1021.4 1018.7 1023.1 1007.6 1001.0 DAY 2 26 24 6 4 20 26 27 6 10 7 19 MEAN QFF PRESSURE IN HPA 1021.7 1016.4 1021.9 1011.8 1009.1 1001.9 1000.2 1007.2 1009.3 1016.5 1021.3 1022.4 1013.3 MAX. QFF PRESSURE IN HPA 1031.5 1030.6 1039.4 1022.6 1018.8 1007.6 1004.8 1012.9 1017.0 1027.4 1027.1 1032.8 1039.4 DAY 24 24 11 17 12 10 31 30 22 31 17 14 MIN. QFF PRESSURE IN HPA 1008.9 1001.9 1003.1 1004.6 1003.0 996.1 993.2 1001.3 1000.9 1005.9 1015.2 1004.6 993.2 DAY 2 26 24 23 27 20 26 6 6 10 10 19 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 756.4 759.0 757.9 758.5 760.7 761.2 760.7 760.6 756.0 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 762.5 765.4 760.7 761.6 764.2 766.3 765.1 764.4 763.4 ****** DAY ** ** ** 17 12 5 15 13 22 31 17 9 MIN. QFE PRESSURE IN HPA ****** ****** ****** 753.1 754.2 754.7 754.3 757.7 757.0 754.7 758.1 747.4 ****** DAY ** ** ** 6 3 20 26 27 6 10 10 18 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1021.1 1024.4 1022.9 1023.7 1026.5 1027.1 1026.5 1026.4 1020.5 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1028.8 1032.5 1026.5 1027.7 1031.0 1033.7 1032.1 1031.2 1030.0 ****** DAY ** ** ** 17 12 5 15 13 22 31 17 9 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1016.8 1018.2 1018.9 1018.3 1022.7 1021.8 1018.9 1023.2 1009.5 ****** DAY ** ** ** 6 3 20 26 27 6 10 10 18 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1011.4 1009.2 1002.3 1000.6 1007.6 1008.7 1016.5 1021.1 1022.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1022.5 1019.5 1007.9 1005.2 1013.7 1017.8 1028.0 1026.5 1031.3 ****** DAY ** ** ** 17 12 9 31 13 22 31 19 14 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1003.0 1002.7 996.3 994.4 1001.6 1000.7 1008.3 1013.8 1006.8 ****** DAY ** ** ** 23 31 20 26 7 6 10 10 18 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 756.3 758.9 758.0 758.5 760.7 761.2 760.6 760.5 755.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 762.5 765.2 760.7 761.0 764.4 766.0 765.3 764.0 763.2 ****** DAY ** ** ** 21 12 5 15 13 22 31 17 8 MIN. QFE PRESSURE IN HPA ****** ****** ****** 752.8 753.9 755.2 754.6 757.5 757.3 754.8 758.1 744.3 ****** DAY ** ** ** 6 3 19 26 27 6 10 10 18 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1020.9 1024.3 1023.0 1023.7 1026.5 1027.2 1026.4 1026.2 1020.1 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1028.8 1032.2 1026.5 1026.9 1031.2 1033.3 1032.4 1030.7 1029.7 ****** DAY ** ** ** 21 12 5 15 13 22 31 17 8 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1016.4 1017.8 1019.5 1018.7 1022.4 1022.2 1019.0 1023.2 1005.6 ****** DAY ** ** ** 6 3 19 26 27 6 10 10 18 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.8 1009.1 1002.2 1000.2 1006.8 1008.1 1015.7 1020.5 1021.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1021.3 1019.0 1008.3 1005.2 1013.7 1016.7 1027.3 1025.7 1029.9 ****** DAY ** ** ** 17 12 9 31 30 22 31 19 14 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1001.5 1002.6 996.8 995.0 1000.2 1000.8 1006.6 1013.0 1002.5 ****** DAY ** ** ** 23 31 20 26 8 6 10 10 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -3.0 -3.0 -2.4 6.4 11.0 16.3 20.4 18.1 15.5 10.8 0.6 -3.9 7.2 MINIMUN AIR TEMPERATURE (C) -6.3 -6.5 -5.7 3.1 6.7 11.2 15.9 13.6 11.0 7.0 -2.0 -7.4 3.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 27 22 20 0 0 0 0 0 0 0 11 23 103 DAYS WITH FREEZING MIN.<= 0 31 28 29 1 1 0 0 0 0 0 21 31 142 TEMPERATURE RECORDS LOWEST(C) -13.8 -11.4 -14.0 -0.2 0.0 7.2 10.0 8.2 7.6 2.0 -8.0 -15.5 -15.5 DAY 21 3 17 1 5 4 22 30 30 25 25 12 MAXIMUM AIR TEMPERATURE (C) 1.5 1.1 1.3 10.3 15.1 21.2 25.3 23.2 20.7 15.5 4.3 0.8 11.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MAXIMUM TEMP. <= 0 6 13 12 0 0 0 0 0 0 0 6 13 50 TEMPERATURE RECORDS HIGHEST(C) 5.8 7.6 7.6 13.2 20.4 27.8 28.2 28.0 22.6 19.8 14.4 6.5 28.2 DAY 3 26 6 16 30 30 31 1 3 3 2 25 DIF. BETWEEN (MAX.-MIN.) (C) 7.8 7.6 7.0 7.2 8.4 10.0 9.4 9.6 9.7 8.5 6.3 8.2 8.3 MEAN DAILY TEMP. (MDT) (C) -2.4 -2.7 -2.2 6.7 10.9 16.2 20.6 18.4 15.9 11.2 1.1 -3.3 7.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 2.4 12.4 3.6 0.0 0.0 0.0 0.0 18.4 HEATING DEG. DAYS(BASE 18 0C) 632.4 580.3 624.9 339.3 220.0 67.8 5.4 25.6 63.9 209.3 505.5 659.8 3934.1 DEWPOINT (MEAN C) -9.0 -7.6 -7.6 -0.1 -1.8 2.0 2.2 2.2 -2.2 -0.9 -3.9 -10.7 -3.1 MIXING RATIO (G/KG) 2.68 2.98 2.99 5.11 4.62 5.99 6.07 6.12 4.43 4.80 3.88 2.40 4.34 VAPOUR PRESSURE (HPA) 3.24 3.60 3.60 6.17 5.59 7.21 7.35 7.41 5.39 5.84 4.69 2.90 5.25 SATURATION DEF. (HPA) 1.83 1.48 1.75 3.57 8.04 11.90 17.12 13.91 12.58 7.41 2.02 1.89 6.96 RELATIVE HUMIDITY (MEAN %) 65 74 70 66 45 41 32 38 32 47 74 62 54 RELATIVE HUMIDITY (MAX. %) 77 85 83 81 61 56 44 50 45 62 86 81 68 RELATIVE HUMIDITY (MIN. %) 53 59 55 52 31 28 23 27 22 33 60 45 41 RELATIVE HUMIDITY (MEAN% 03UTC) 64 76 71 71 51 50 38 45 36 56 77 59 58 RELATIVE HUMIDITY (MEAN% 09UTC) 59 67 66 59 38 33 27 30 24 36 67 57 47 RELATIVE HUMIDITY (MEAN% 15UTC) 70 77 71 63 40 33 27 33 29 45 79 68 53 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 28.8 80.4 50.1 59.5 110.3 9.2 2.5 32.2 0.6 6.8 88.5 41.7 510.6 DAYS WITH PRECIPITATION >=10 1 2 1 2 3 0 0 2 0 0 3 1 15 DAYS WITH PRECIPITATION >= 5 2 4 5 4 4 0 0 3 0 0 4 1 27 DAYS WITH PRECIPITATION >= 1 6 9 12 11 7 4 1 3 0 2 14 7 76 DAYS WITH PRECIPITATION 8 11 15 14 11 6 2 5 1 6 19 11 109 GREATEST DAILY PRECIPITATION 13.0 28.0 10.0 20.5 50.0 3.0 2.5 13.2 0.6 3.2 23.4 27.0 50.0 DAY 23 13 14 5 3 12 22 25 17 12 30 20 DAY WITH THUNDER STORM 0 0 1 3 7 6 2 2 1 1 1 1 25 DAYS WITH SNOW OR SLEET 9 11 15 3 1 0 0 0 0 0 15 12 66 DAYS WITH DUST 0 0 1 1 2 0 2 3 0 1 1 1 12 WIND DIRECTION (PREVAILING) 270 225 45 270 270 270 45 45 225 225 225 270 270 PREVAILING WIND SPEED(KNOTS) 6.7 5.6 24.4 8.0 10.2 6.9 12.2 12.5 6.9 6.9 5.7 7.8 7.8 PREVAILING WIND PERCENT 8.5 4.9 14.5 12.1 23.8 17.5 18.5 14.9 16.7 21.0 10.0 6.9 11.4 CALMS PERCENT OF WIND 78.2 75.9 61.7 70.0 52.8 53.3 44.0 50.4 53.3 57.3 71.7 80.6 62.3 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 2 6 26 273 259 303 356 356 333 254 345 325 322 VECTOR WIND MAGNITUDE(KNOTS) 1.0 1.2 3.5 1.2 3.4 1.2 1.8 1.3 1.1 2.7 0.5 0.8 1.1 WIND STEADINESES (MEAN %) 40.0 52.2 61.4 52.2 77.3 33.3 36.0 29.5 26.8 87.1 23.8 36.4 31.4 WIND SPEED (MEAN KNOTS) 2.5 2.3 5.7 2.3 4.4 3.6 5.0 4.4 4.1 3.1 2.1 2.2 3.5 FASTEST WIND DIRECTION 60 10 30 310 270 20 30 30 30 270 30 20 30 FASTEST WIND SPEED (KNOTS) 31 35 49 19 29 29 29 29 31 23 23 29 49 DAY 20 11 15 3 10 14 21 30 29 23 12 10 DAYS WITH SKY CLEAR (0-2)/8 16 10 8 3 14 20 26 22 28 16 6 18 187 DAYS WITH P.CLOUDY (3-6)/8 11 8 8 14 11 8 5 8 2 13 13 4 105 DAYS WITH CLOUDY (7-8)/8 4 10 15 13 6 2 0 1 0 2 11 9 73 DAYS WITH VISIBILITY =< 2 KM 4 8 16 4 1 0 0 0 0 0 5 10 48 DURATION OF SUNSHINE HOURS 206.2 156.1 128.0 158.2 280.8 313.7 332.9 323.8 319.0 254.4 118.2 182.6 2773.9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 755.4 753.7 754.3 757.5 758.4 756.6 760.3 760.9 763.0 762.8 758.0 755.7 758.1 MAX. QFE PRESSURE IN HPA 761.9 761.6 761.7 762.6 764.8 761.9 764.1 764.3 768.2 768.1 763.3 765.8 768.2 DAY-HOUR 10- 6 22- 9 27-18 5- 6 19-18 2- 6 31-18 1- 6 22- 6 15- 6 15-18 6-21 MIN. QFE PRESSURE IN HPA 742.5 747.2 747.8 752.3 752.2 753.0 756.0 756.5 759.7 759.0 752.3 746.3 742.5 DAY-HOUR 20-12 16- 3 8- 3 11- 3 5- 0 17-12 20-15 6-15 29-12 24-12 30-21 20-12 MEAN QNH PRESSURE IN HPA 1019.8 1017.6 1018.4 1022.5 1023.6 1021.3 1026.0 1026.8 1029.5 1029.2 1023.1 1020.2 1023.2 MAX. QNH PRESSURE IN HPA 1028.0 1027.7 1027.8 1028.9 1031.7 1028.0 1030.8 1031.1 1036.1 1035.9 1029.8 1033.0 1036.1 DAY-HOUR 10- 6 22- 9 27-18 5- 6 19-18 2- 6 31-18 1- 6 22- 6 15- 6 15-18 6-21 MIN. QNH PRESSURE IN HPA 1003.3 1009.3 1010.1 1015.8 1015.7 1016.7 1020.5 1021.2 1025.2 1024.3 1015.8 1008.1 1003.3 DAY-HOUR 20-12 16- 3 8- 3 11- 3 5- 0 17-12 20-15 6-15 29-12 24-12 30-21 20-12 MEAN QFF PRESSURE IN HPA 1021.8 1019.5 1019.6 1014.2 1010.8 1003.0 1003.9 1006.8 1012.5 1016.8 1021.1 1023.2 1014.4 MAX. QFF PRESSURE IN HPA 1036.3 1026.9 1030.5 1025.1 1019.3 1012.6 1009.2 1015.0 1018.4 1023.3 1031.0 1037.6 1037.6 DAY-HOUR 24- 3 13-15 17- 3 5- 6 19-18 2- 9 15- 3 25-12 22- 6 15- 3 21-15 6-18 MIN. QFF PRESSURE IN HPA 1004.7 1011.1 1005.2 1008.3 1003.0 996.2 997.2 1001.6 1006.8 1009.8 1009.8 1008.6 996.2 DAY-HOUR 20- 0 25-12 8-12 30-12 10- 0 17-21 20- 0 5- 0 29-12 5-12 8-21 30-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 755.4 753.4 754.0 757.3 757.9 756.4 759.9 760.7 762.8 762.5 757.9 755.5 757.8 MAX. QFE PRESSURE IN HPA 760.4 759.7 761.4 761.7 763.8 760.4 763.5 763.7 767.2 767.1 762.2 765.4 767.2 DAY 29 22 28 5 20 3 4 1 23 15 16 7 MIN. QFE PRESSURE IN HPA 743.7 747.5 748.8 753.0 752.2 753.0 756.2 756.9 760.6 759.9 753.5 747.9 743.7 DAY 20 16 8 12 5 19 20 6 6 1 8 31 MEAN QNH PRESSURE IN HPA 1019.7 1017.2 1017.9 1022.2 1023.0 1021.0 1025.5 1026.6 1029.2 1028.8 1022.9 1019.9 1022.8 MAX. QNH PRESSURE IN HPA 1026.1 1025.2 1027.4 1027.8 1030.5 1026.1 1030.1 1030.3 1034.8 1034.7 1028.4 1032.5 1034.8 DAY 29 22 28 5 20 3 4 1 23 15 16 7 MIN. QNH PRESSURE IN HPA 1004.8 1009.7 1011.3 1016.7 1015.7 1016.7 1020.8 1021.7 1026.4 1025.5 1017.3 1010.2 1004.8 DAY 20 16 8 12 5 19 20 6 6 1 8 31 MEAN QFF PRESSURE IN HPA 1021.2 1018.7 1019.1 1014.0 1010.3 1002.7 1003.3 1006.4 1011.6 1015.8 1020.5 1022.5 1013.8 MAX. QFF PRESSURE IN HPA 1035.1 1025.3 1030.1 1020.9 1017.9 1011.8 1007.4 1013.4 1016.3 1021.7 1029.3 1034.5 1035.1 DAY 24 20 17 5 18 4 4 26 23 15 21 12 MIN. QFF PRESSURE IN HPA 1004.7 1011.7 1005.3 1008.6 1003.0 997.6 997.2 1001.6 1007.3 1010.0 1011.2 1011.3 997.2 DAY 20 26 8 29 10 17 20 5 4 5 4 31 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 755.2 753.4 754.0 757.3 758.2 756.7 760.3 761.1 763.0 762.6 757.9 755.5 757.9 MAX. QFE PRESSURE IN HPA 760.7 760.1 761.2 762.0 764.0 760.9 763.3 764.2 767.4 767.3 762.3 765.1 767.4 DAY 5 22 28 5 20 2 15 1 23 15 16 7 MIN. QFE PRESSURE IN HPA 742.8 747.2 747.8 752.3 752.8 753.2 756.7 757.0 760.4 759.6 753.5 748.8 742.8 DAY 20 16 8 11 5 17 25 6 15 1 30 31 MEAN QNH PRESSURE IN HPA 1019.6 1017.1 1017.9 1022.1 1023.3 1021.4 1026.0 1027.0 1029.5 1029.0 1023.0 1019.9 1023.0 MAX. QNH PRESSURE IN HPA 1026.5 1025.7 1027.1 1028.2 1030.7 1026.8 1029.8 1031.0 1035.1 1034.9 1028.5 1032.1 1035.1 DAY 5 22 28 5 20 2 15 1 23 15 16 7 MIN. QNH PRESSURE IN HPA 1003.7 1009.3 1010.1 1015.8 1016.4 1016.9 1021.4 1021.8 1026.1 1025.1 1017.3 1011.3 1003.7 DAY 20 16 8 11 5 17 25 6 15 1 30 31 MEAN QFF PRESSURE IN HPA 1022.8 1020.2 1019.8 1014.5 1010.8 1003.1 1004.2 1007.5 1013.4 1017.8 1021.9 1024.1 1015.0 MAX. QFF PRESSURE IN HPA 1036.3 1026.4 1030.5 1022.1 1017.6 1011.1 1009.2 1014.4 1018.0 1023.3 1030.8 1035.6 1036.3 DAY 24 22 17 5 18 3 15 31 22 15 21 7 MIN. QFF PRESSURE IN HPA 1005.2 1013.7 1005.7 1008.5 1004.8 996.5 999.0 1003.1 1008.5 1012.3 1012.4 1013.5 996.5 DAY 20 10 8 11 10 17 21 15 4 5 7 1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 756.2 754.2 754.9 758.0 758.9 757.2 760.9 761.6 763.8 763.5 758.8 756.4 758.7 MAX. QFE PRESSURE IN HPA 761.9 761.2 761.4 762.6 764.6 761.9 763.9 764.3 768.2 768.1 762.9 765.5 768.2 DAY 10 22 28 5 20 2 31 1 22 15 16 7 MIN. QFE PRESSURE IN HPA 743.5 747.8 748.9 753.0 752.7 753.8 757.3 757.6 760.9 760.4 754.7 750.0 743.5 DAY 20 16 8 11 4 19 25 6 6 1 30 20 MEAN QNH PRESSURE IN HPA 1020.8 1018.3 1019.1 1023.0 1024.2 1022.1 1026.7 1027.6 1030.5 1030.1 1024.0 1021.0 1023.9 MAX. QNH PRESSURE IN HPA 1028.0 1027.1 1027.4 1028.9 1031.5 1028.0 1030.6 1031.1 1036.1 1035.9 1029.3 1032.6 1036.1 DAY 10 22 28 5 20 2 31 1 22 15 16 7 MIN. QNH PRESSURE IN HPA 1004.6 1010.1 1011.5 1016.7 1016.3 1017.7 1022.2 1022.6 1026.8 1026.1 1018.9 1012.9 1004.6 DAY 20 16 8 11 4 19 25 6 6 1 30 20 MEAN QFF PRESSURE IN HPA 1023.0 1020.4 1020.2 1015.0 1011.4 1004.2 1004.9 1007.6 1013.5 1017.7 1022.0 1024.0 1015.3 MAX. QFF PRESSURE IN HPA 1032.8 1026.8 1028.8 1025.1 1018.6 1012.5 1008.8 1014.1 1018.4 1023.1 1030.5 1036.5 1036.5 DAY 24 22 17 5 18 2 16 31 22 15 21 7 MIN. QFF PRESSURE IN HPA 1007.6 1012.4 1008.9 1010.6 1006.1 998.1 1000.2 1003.9 1008.9 1011.3 1012.6 1013.2 998.1 DAY 20 10 8 30 10 29 20 15 29 5 4 1 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 755.5 754.1 754.8 757.8 758.8 756.9 760.6 761.1 763.3 762.9 758.0 755.7 758.3 MAX. QFE PRESSURE IN HPA 761.3 761.6 761.7 761.5 764.4 761.8 763.4 764.2 767.8 767.1 762.4 763.9 767.8 DAY 10 22 28 5 20 2 31 1 22 15 16 7 MIN. QFE PRESSURE IN HPA 742.9 748.2 748.7 752.9 752.7 753.5 757.3 757.5 760.2 759.9 753.2 747.6 742.9 DAY 20 16 8 11 4 17 20 6 29 1 30 20 MEAN QNH PRESSURE IN HPA 1019.9 1018.0 1018.9 1022.8 1024.1 1021.7 1026.3 1027.1 1029.8 1029.3 1023.0 1020.1 1023.4 MAX. QNH PRESSURE IN HPA 1027.3 1027.7 1027.8 1027.5 1031.2 1027.9 1030.0 1031.0 1035.6 1034.7 1028.7 1030.6 1035.6 DAY 10 22 28 5 20 2 31 1 22 15 16 7 MIN. QNH PRESSURE IN HPA 1003.8 1010.6 1011.2 1016.6 1016.3 1017.3 1022.2 1022.4 1025.9 1025.5 1016.9 1009.8 1003.8 DAY 20 16 8 11 4 17 20 6 29 1 30 20 MEAN QFF PRESSURE IN HPA 1021.1 1019.3 1019.8 1014.1 1011.1 1003.3 1004.0 1006.6 1012.4 1016.1 1020.4 1022.1 1014.2 MAX. QFF PRESSURE IN HPA 1032.2 1025.5 1028.0 1023.4 1018.8 1012.6 1008.9 1012.8 1018.1 1021.6 1029.7 1032.8 1032.8 DAY 24 22 17 5 19 2 22 31 22 15 21 11 MIN. QFF PRESSURE IN HPA 1007.2 1012.6 1008.0 1009.5 1003.2 997.1 998.7 1003.2 1007.3 1010.9 1011.0 1010.7 997.1 DAY 20 10 8 30 10 18 20 15 29 5 7 20 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 754.9 753.3 754.0 757.2 758.3 756.2 759.9 760.4 762.5 762.2 757.5 755.3 757.6 MAX. QFE PRESSURE IN HPA 760.5 760.5 760.8 760.6 763.9 761.1 762.9 762.9 767.1 766.1 761.8 762.5 767.1 DAY 3 22 27 5 20 2 31 1 22 14 15 7 MIN. QFE PRESSURE IN HPA 742.5 748.3 748.0 752.7 752.9 753.0 756.4 756.7 759.7 759.0 752.8 746.3 742.5 DAY 20 16 8 11 4 17 20 6 29 24 30 20 MEAN QNH PRESSURE IN HPA 1019.1 1017.1 1018.0 1022.0 1023.5 1020.8 1025.4 1026.1 1028.8 1028.4 1022.5 1019.6 1022.6 MAX. QNH PRESSURE IN HPA 1026.3 1026.3 1026.6 1026.4 1030.6 1027.0 1029.3 1029.3 1034.7 1033.4 1027.9 1028.8 1034.7 DAY 3 22 27 5 20 2 31 1 22 14 15 7 MIN. QNH PRESSURE IN HPA 1003.3 1010.7 1010.3 1016.3 1016.6 1016.7 1021.0 1021.4 1025.2 1024.3 1016.4 1008.1 1003.3 DAY 20 16 8 11 4 17 20 6 29 24 30 20 MEAN QFF PRESSURE IN HPA 1020.4 1018.3 1019.1 1013.4 1010.7 1002.5 1003.2 1006.1 1011.2 1015.5 1020.2 1022.2 1013.6 MAX. QFF PRESSURE IN HPA 1030.5 1025.2 1027.7 1021.0 1018.3 1012.2 1006.9 1015.0 1016.9 1020.4 1027.9 1032.7 1032.7 DAY 24 22 17 5 18 3 15 25 22 15 21 11 MIN. QFF PRESSURE IN HPA 1008.6 1011.1 1005.2 1008.3 1006.3 997.2 997.8 1002.6 1006.8 1009.8 1010.6 1008.6 997.2 DAY 19 25 8 30 31 28 20 6 29 5 7 30 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 755.4 753.6 754.1 757.3 758.3 756.1 759.9 760.5 762.6 762.6 758.0 755.9 757.9 MAX. QFE PRESSURE IN HPA 760.8 760.3 761.1 761.0 763.7 760.6 763.4 763.2 767.2 766.9 762.8 763.7 767.2 DAY 5 22 27 4 19 2 31 1 22 14 15 6 MIN. QFE PRESSURE IN HPA 744.0 748.5 749.0 752.4 753.5 753.0 756.0 756.5 760.0 759.4 752.6 747.1 744.0 DAY 20 15 8 11 3 17 20 6 29 1 30 20 MEAN QNH PRESSURE IN HPA 1019.7 1017.4 1018.1 1022.1 1023.4 1020.7 1025.5 1026.2 1029.0 1029.0 1023.1 1020.3 1022.9 MAX. QNH PRESSURE IN HPA 1026.6 1026.0 1027.0 1026.9 1030.3 1026.4 1030.0 1029.7 1034.8 1034.4 1029.2 1030.3 1034.8 DAY 5 22 27 4 19 2 31 1 22 14 15 6 MIN. QNH PRESSURE IN HPA 1005.2 1011.0 1011.6 1015.9 1017.3 1016.7 1020.5 1021.2 1025.6 1024.9 1016.2 1009.2 1005.2 DAY 20 15 8 11 3 17 20 6 29 1 30 20 MEAN QFF PRESSURE IN HPA 1022.9 1020.2 1019.9 1014.3 1010.9 1002.3 1003.7 1006.9 1012.8 1017.9 1022.0 1024.6 1014.9 MAX. QFF PRESSURE IN HPA 1034.0 1026.9 1029.3 1022.2 1018.4 1010.9 1007.0 1013.1 1018.2 1022.3 1031.0 1035.9 1035.9 DAY 24 13 16 5 18 3 15 31 21 15 21 6 MIN. QFF PRESSURE IN HPA 1009.2 1013.1 1009.3 1008.6 1005.8 996.5 997.5 1002.5 1009.5 1012.3 1011.8 1009.8 996.5 DAY 19 6 8 30 30 29 20 15 5 1 7 30 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 755.7 754.1 754.6 757.9 758.8 756.6 760.6 761.2 763.3 763.1 758.2 756.1 758.3 MAX. QFE PRESSURE IN HPA 761.3 760.6 761.7 762.0 764.8 761.5 764.1 764.0 767.4 767.6 763.3 765.7 767.6 DAY 5 22 27 4 19 2 31 24 22 14 15 6 MIN. QFE PRESSURE IN HPA 745.3 748.5 749.4 753.4 753.8 753.3 756.6 757.5 760.4 760.1 752.6 747.8 745.3 DAY 19 15 9 11 4 17 20 6 29 24 30 20 MEAN QNH PRESSURE IN HPA 1020.1 1018.1 1018.7 1022.9 1024.1 1021.3 1026.4 1027.2 1029.8 1029.6 1023.3 1020.7 1023.5 MAX. QNH PRESSURE IN HPA 1027.3 1026.4 1027.8 1028.2 1031.7 1027.5 1030.8 1030.7 1035.1 1035.3 1029.8 1032.9 1035.3 DAY 5 22 27 4 19 2 31 24 22 14 15 6 MIN. QNH PRESSURE IN HPA 1006.9 1011.0 1012.1 1017.2 1017.7 1017.1 1021.3 1022.4 1026.1 1025.7 1016.2 1010.1 1006.9 DAY 19 15 9 11 4 17 20 6 29 24 30 20 MEAN QFF PRESSURE IN HPA 1022.3 1020.1 1019.7 1014.7 1011.2 1003.3 1004.6 1007.3 1012.8 1017.3 1021.3 1023.9 1014.9 MAX. QFF PRESSURE IN HPA 1033.1 1026.3 1029.4 1022.7 1019.3 1011.7 1008.8 1014.5 1016.9 1021.8 1030.0 1037.6 1037.6 DAY 23 13 16 5 19 2 15 31 22 14 21 6 MIN. QFF PRESSURE IN HPA 1007.4 1012.9 1011.0 1009.9 1005.5 998.3 998.7 1002.9 1008.1 1011.0 1011.8 1008.9 998.3 DAY 19 25 7 30 13 28 20 15 25 1 7 30 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 755.4 753.9 754.4 757.7 758.4 756.6 760.3 761.0 763.1 762.9 757.9 755.8 758.1 MAX. QFE PRESSURE IN HPA 760.4 760.6 761.7 762.2 764.3 761.0 764.1 763.2 767.1 767.8 763.0 765.8 767.8 DAY 28 22 27 4 19 2 31 24 22 14 15 6 MIN. QFE PRESSURE IN HPA 744.3 748.2 749.3 753.3 752.5 753.3 756.4 757.4 760.1 759.6 752.3 747.8 744.3 DAY 19 15 9 11 4 17 19 5 30 24 30 20 MEAN QNH PRESSURE IN HPA 1019.7 1017.9 1018.5 1022.7 1023.6 1021.2 1026.1 1026.9 1029.5 1029.3 1022.9 1020.2 1023.2 MAX. QNH PRESSURE IN HPA 1026.1 1026.4 1027.8 1028.4 1031.1 1026.9 1030.8 1029.7 1034.7 1035.6 1029.4 1033.0 1035.6 DAY 28 22 27 4 19 2 31 24 22 14 15 6 MIN. QNH PRESSURE IN HPA 1005.6 1010.6 1012.0 1017.1 1016.1 1017.1 1021.0 1022.3 1025.7 1025.1 1015.8 1010.1 1005.6 DAY 19 15 9 11 4 17 19 5 30 24 30 20 MEAN QFF PRESSURE IN HPA 1020.9 1019.1 1019.3 1014.0 1010.4 1002.7 1003.7 1006.7 1012.1 1016.1 1020.4 1022.4 1014.0 MAX. QFF PRESSURE IN HPA 1034.6 1026.0 1029.7 1021.8 1018.4 1010.6 1008.2 1013.1 1016.6 1022.0 1028.8 1034.5 1034.6 DAY 23 13 16 5 19 2 22 31 21 14 15 6 MIN. QFF PRESSURE IN HPA 1004.7 1012.1 1009.0 1009.2 1004.8 996.2 997.5 1002.6 1007.5 1010.0 1009.8 1010.0 996.2 DAY 19 25 7 30 30 17 20 15 25 1 8 30 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.1 -0.9 -0.7 6.1 13.4 18.5 19.2 19.6 15.3 5.8 3.9 -1.1 8.2 MINIMUN AIR TEMPERATURE (C) -4.5 -4.1 -3.7 2.1 9.1 13.7 14.3 14.7 10.8 2.6 0.7 -4.1 4.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 19 16 14 3 0 0 0 0 0 0 4 15 71 DAYS WITH FREEZING MIN.<= 0 30 24 24 9 0 0 0 0 0 9 10 29 135 TEMPERATURE RECORDS LOWEST(C) -9.0 -11.2 -11.2 -8.6 4.0 9.8 9.6 10.0 6.0 -3.6 -9.2 -11.4 -11.4 DAY 12 7 15 1 7 1 27 29 29 29 30 31 MAXIMUM AIR TEMPERATURE (C) 3.7 3.4 2.6 10.1 17.9 23.2 24.0 24.8 20.5 9.5 7.8 2.6 12.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MAXIMUM TEMP. <= 0 1 4 7 0 0 0 0 0 0 0 4 5 21 TEMPERATURE RECORDS HIGHEST(C) 9.6 11.0 8.2 17.4 21.5 26.5 28.6 26.8 24.8 19.8 12.2 7.2 28.6 DAY 31 4 9 17 10 29 19 17 4 3 6 18 DIF. BETWEEN (MAX.-MIN.) (C) 8.2 7.5 6.3 8.0 8.8 9.5 9.7 10.1 9.7 6.9 7.1 6.7 8.2 MEAN DAILY TEMP. (MDT) (C) -0.4 -0.3 -0.5 6.1 13.5 18.4 19.2 19.8 15.6 6.0 4.3 -0.8 8.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.0 13.0 2.0 0.0 0.0 0.0 0.0 15.1 HEATING DEG. DAYS(BASE 18 0C) 570.6 513.4 573.8 357.9 140.4 10.3 22.4 5.8 76.5 370.8 412.4 581.5 3635.7 DEWPOINT (MEAN C) -9.1 -6.7 -6.0 -4.6 1.6 0.8 3.7 3.5 1.2 -1.1 -6.0 -6.8 -2.5 MIXING RATIO (G/KG) 2.64 3.16 3.44 3.82 5.80 5.41 6.77 6.64 5.60 4.81 3.43 3.19 4.56 VAPOUR PRESSURE (HPA) 3.20 3.83 4.13 4.62 7.01 6.55 8.17 8.02 6.79 5.83 4.17 3.86 5.52 SATURATION DEF. (HPA) 2.60 2.07 1.84 5.30 8.75 15.13 14.69 15.23 11.06 3.93 4.27 1.98 7.24 RELATIVE HUMIDITY (MEAN %) 57 67 70 51 48 31 39 37 41 66 52 67 52 RELATIVE HUMIDITY (MAX. %) 74 84 87 67 64 42 55 53 57 80 68 84 68 RELATIVE HUMIDITY (MIN. %) 42 53 54 38 35 23 28 26 28 51 38 51 39 RELATIVE HUMIDITY (MEAN% 03UTC) 54 69 72 56 53 37 47 45 49 69 55 67 56 RELATIVE HUMIDITY (MEAN% 09UTC) 50 62 66 45 41 26 32 28 32 61 44 61 46 RELATIVE HUMIDITY (MEAN% 15UTC) 65 73 69 48 43 28 32 32 39 68 56 72 52 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 40.6 99.2 178.4 82.0 41.5 0.2 61.1 8.4 6.6 102.9 23.5 69.7 714.1 DAYS WITH PRECIPITATION >=10 1 3 8 2 1 0 2 0 0 4 1 3 25 DAYS WITH PRECIPITATION >= 5 2 7 9 5 3 0 3 1 0 9 1 6 46 DAYS WITH PRECIPITATION >= 1 7 10 14 7 11 0 5 2 2 10 6 9 83 DAYS WITH PRECIPITATION 8 12 21 13 13 1 8 2 3 14 9 15 119 GREATEST DAILY PRECIPITATION 14.0 24.0 26.0 35.0 12.0 0.2 29.0 6.0 4.5 27.0 11.2 17.7 35.0 DAY 7 9 17 4 5 20 27 6 29 25 26 24 DAY WITH THUNDER STORM 1 1 4 5 7 1 7 3 1 2 1 0 33 DAYS WITH SNOW OR SLEET 8 12 19 5 0 0 0 0 0 4 4 15 67 DAYS WITH DUST 0 0 0 0 1 1 1 0 1 0 0 1 5 WIND DIRECTION (PREVAILING) 225 270 270 270 270 270 270 45 270 225 225 270 270 PREVAILING WIND SPEED(KNOTS) 9.2 7.5 9.0 8.9 7.7 7.3 6.9 12.6 7.5 6.0 6.1 8.9 8.0 PREVAILING WIND PERCENT 5.6 12.1 20.2 26.3 18.1 13.8 11.3 11.3 11.5 8.1 15.4 8.9 12.2 CALMS PERCENT OF WIND 88.3 71.9 58.5 53.3 55.2 61.3 60.5 59.3 69.4 72.6 75.4 79.8 67.1 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 235 248 240 248 2915 VECTOR WIND DIRECTION (MEAN) 249 269 292 259 290 309 311 17 275 356 255 257 284 VECTOR WIND MAGNITUDE(KNOTS) 0.8 0.9 1.9 3.6 1.5 0.8 0.8 1.2 1.1 1.1 0.9 0.9 1.0 WIND STEADINESES (MEAN %) 80.0 42.9 42.2 90.0 41.7 27.6 27.6 35.3 45.8 42.3 52.9 60.0 37.0 WIND SPEED (MEAN KNOTS) 1.0 2.1 4.5 4.0 3.6 2.9 2.9 3.4 2.4 2.6 1.7 1.5 2.7 FASTEST WIND DIRECTION 240 240 30 240 360 30 330 30 20 20 20 260 30 FASTEST WIND SPEED (KNOTS) 25 23 35 29 29 19 29 29 29 29 19 29 35 DAY 27 10 30 16 4 21 2 27 28 9 25 24 DAYS WITH SKY CLEAR (0-2)/8 15 8 4 11 8 25 22 24 26 9 19 11 182 DAYS WITH P.CLOUDY (3-6)/8 12 11 14 14 14 5 8 7 3 9 3 12 112 DAYS WITH CLOUDY (7-8)/8 4 9 13 5 9 0 1 0 1 12 8 8 70 DAYS WITH VISIBILITY =< 2 KM 4 9 15 2 0 0 1 1 0 8 3 6 49 DURATION OF SUNSHINE HOURS 219.3 152.0 138.6 225.9 236.6 331.3 310.4 341.8 288.5 151.4 198.2 146.0 2740.0 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 757.4 756.4 752.2 757.5 760.3 759.8 759.5 759.6 761.1 761.4 760.8 757.0 758.6 MAX. QFE PRESSURE IN HPA 764.3 764.4 758.3 764.6 764.0 764.8 762.6 765.6 766.4 766.4 767.2 765.7 767.2 DAY-HOUR 17-18 1- 6 24- 6 30- 9 1- 6 28- 6 18- 6 8- 6 26- 6 16- 6 16- 6 1- 6 MIN. QFE PRESSURE IN HPA 748.9 747.1 742.4 748.0 755.5 756.1 752.9 755.1 757.9 756.7 753.8 746.9 742.4 DAY-HOUR 6-21 10-15 14-12 4-15 22-21 13- 0 3-15 29-12 28-12 9- 0 7-12 31- 3 MEAN QNH PRESSURE IN HPA 1022.3 1021.0 1015.7 1022.4 1026.1 1025.3 1024.9 1025.1 1027.0 1027.4 1026.7 1021.8 1023.8 MAX. QNH PRESSURE IN HPA 1031.1 1031.2 1023.5 1031.5 1030.7 1031.7 1028.9 1032.8 1033.8 1033.8 1034.8 1032.9 1034.8 DAY-HOUR 17-18 1- 6 24- 6 30- 9 1- 6 28- 6 18- 6 8- 6 26- 6 16- 6 16- 6 1- 6 MIN. QNH PRESSURE IN HPA 1011.5 1009.2 1003.2 1010.3 1019.9 1020.6 1016.6 1019.4 1022.9 1021.4 1017.7 1008.9 1003.2 DAY-HOUR 6-21 10-15 14-12 4-15 22-21 13- 0 3-15 29-12 28-12 9- 0 7-12 31- 3 MEAN QFF PRESSURE IN HPA 1022.4 1020.7 1014.8 1014.8 1010.7 1005.2 1003.9 1003.7 1010.0 1020.0 1021.4 1021.6 1014.1 MAX. QFF PRESSURE IN HPA 1035.9 1033.5 1027.0 1025.9 1018.5 1012.5 1011.1 1013.4 1017.9 1030.8 1039.1 1036.8 1039.1 DAY-HOUR 12- 6 12- 0 22-15 1-15 1- 6 1- 6 28- 0 8- 6 24- 6 29- 3 30- 3 1- 0 MIN. QFF PRESSURE IN HPA 1009.8 1009.2 1000.5 1004.3 1002.7 1000.1 996.3 997.3 1003.1 1005.4 1006.6 1007.8 996.3 DAY-HOUR 6-21 10-18 14- 0 4-15 23- 3 18-12 3-12 25-12 6-12 4-12 7-12 24- 3 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 757.0 756.3 751.8 757.0 759.9 759.5 759.1 759.4 760.8 760.9 760.4 757.0 758.3 MAX. QFE PRESSURE IN HPA 763.0 763.6 757.9 763.0 763.2 763.2 761.3 764.5 765.8 765.5 766.1 764.7 766.1 DAY 17 1 24 30 1 28 11 8 26 17 16 1 MIN. QFE PRESSURE IN HPA 749.4 748.1 742.5 748.2 755.5 756.1 754.2 756.1 758.2 756.7 755.0 747.1 742.5 DAY 7 11 14 5 23 13 3 29 23 9 8 31 MEAN QNH PRESSURE IN HPA 1021.8 1020.9 1015.2 1021.8 1025.5 1024.9 1024.5 1024.8 1026.6 1026.8 1026.2 1021.8 1023.4 MAX. QNH PRESSURE IN HPA 1029.4 1030.2 1022.9 1029.4 1029.7 1029.7 1027.3 1031.4 1033.0 1032.6 1033.4 1031.6 1033.4 DAY 17 1 24 30 1 28 11 8 26 17 16 1 MIN. QNH PRESSURE IN HPA 1012.1 1010.4 1003.3 1010.6 1019.9 1020.6 1018.2 1020.6 1023.3 1021.4 1019.2 1009.2 1003.3 DAY 7 11 14 5 23 13 3 29 23 9 8 31 MEAN QFF PRESSURE IN HPA 1021.5 1020.1 1014.0 1014.4 1010.2 1004.7 1003.4 1003.0 1008.9 1018.7 1020.3 1021.2 1013.4 MAX. QFF PRESSURE IN HPA 1033.1 1033.5 1026.0 1023.3 1017.1 1010.4 1011.1 1012.9 1016.5 1029.7 1038.4 1036.8 1038.4 DAY 12 12 23 2 1 1 28 8 30 29 30 1 MIN. QFF PRESSURE IN HPA 1012.1 1010.1 1000.5 1007.2 1003.1 1000.6 997.1 998.3 1003.9 1006.6 1010.5 1007.9 997.1 DAY 7 5 14 5 23 10 3 25 5 4 7 24 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 756.9 756.2 751.7 757.2 760.3 759.9 759.5 759.8 761.1 761.1 760.6 756.8 758.4 MAX. QFE PRESSURE IN HPA 763.0 763.8 757.7 763.4 763.6 764.0 762.1 764.7 765.8 765.3 766.1 764.6 766.1 DAY 17 1 24 30 1 28 18 8 26 16 16 1 MIN. QFE PRESSURE IN HPA 749.6 749.8 742.8 748.4 755.5 756.6 754.0 756.4 758.5 757.0 755.6 746.9 742.8 DAY 7 11 14 5 23 13 3 29 23 9 8 31 MEAN QNH PRESSURE IN HPA 1021.7 1020.8 1015.1 1022.0 1026.0 1025.4 1025.0 1025.3 1027.0 1027.0 1026.4 1021.5 1023.6 MAX. QNH PRESSURE IN HPA 1029.4 1030.5 1022.7 1030.0 1030.2 1030.7 1028.3 1031.6 1033.0 1032.4 1033.4 1031.5 1033.4 DAY 17 1 24 30 1 28 18 8 26 16 16 1 MIN. QNH PRESSURE IN HPA 1012.4 1012.6 1003.7 1010.8 1019.9 1021.3 1018.0 1021.0 1023.7 1021.8 1020.0 1008.9 1003.7 DAY 7 11 14 5 23 13 3 29 23 9 8 31 MEAN QFF PRESSURE IN HPA 1023.2 1021.4 1014.8 1015.3 1011.0 1005.4 1004.0 1004.6 1010.9 1020.6 1022.4 1022.4 1014.7 MAX. QFF PRESSURE IN HPA 1035.0 1033.0 1026.3 1024.3 1017.7 1011.9 1009.7 1012.9 1017.8 1030.8 1039.1 1035.6 1039.1 DAY 12 7 23 1 1 1 28 8 26 29 30 1 MIN. QFF PRESSURE IN HPA 1013.5 1011.8 1002.8 1007.5 1002.7 1000.9 997.1 999.4 1005.0 1007.7 1010.0 1007.8 997.1 DAY 7 5 14 4 23 10 3 18 5 4 7 24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 758.0 757.0 752.7 758.0 760.9 760.3 760.0 760.3 761.9 762.0 761.5 757.6 759.2 MAX. QFE PRESSURE IN HPA 763.8 764.4 758.3 764.4 764.0 764.8 762.6 765.6 766.4 766.4 767.2 765.7 767.2 DAY 17 1 24 30 1 28 18 8 26 16 16 1 MIN. QFE PRESSURE IN HPA 751.2 750.6 744.0 749.9 756.5 756.9 754.4 756.6 759.4 758.1 756.4 747.5 744.0 DAY 7 10 14 5 23 13 3 29 23 20 7 31 MEAN QNH PRESSURE IN HPA 1023.1 1021.8 1016.3 1023.1 1026.8 1026.1 1025.7 1026.0 1028.0 1028.1 1027.5 1022.6 1024.6 MAX. QNH PRESSURE IN HPA 1030.5 1031.2 1023.5 1031.2 1030.7 1031.7 1028.9 1032.8 1033.8 1033.8 1034.8 1032.9 1034.8 DAY 17 1 24 30 1 28 18 8 26 16 16 1 MIN. QNH PRESSURE IN HPA 1014.4 1013.6 1005.2 1012.7 1021.2 1021.7 1018.5 1021.3 1024.9 1023.2 1021.0 1009.7 1005.2 DAY 7 10 14 5 23 13 3 29 23 20 7 31 MEAN QFF PRESSURE IN HPA 1023.5 1021.6 1015.4 1015.5 1011.5 1006.2 1005.0 1004.7 1011.2 1020.8 1022.1 1022.5 1015.0 MAX. QFF PRESSURE IN HPA 1035.9 1032.0 1026.6 1022.8 1018.5 1012.5 1010.5 1013.4 1017.9 1030.3 1037.5 1035.5 1037.5 DAY 12 12 23 1 1 1 27 8 24 28 30 1 MIN. QFF PRESSURE IN HPA 1016.5 1013.8 1003.7 1009.2 1003.6 1002.0 998.2 999.3 1004.3 1008.0 1010.5 1010.9 998.2 DAY 7 10 14 26 23 5 3 18 6 4 7 24 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 757.5 756.8 752.6 757.7 760.7 760.1 759.8 759.9 761.4 761.7 760.9 757.0 758.9 MAX. QFE PRESSURE IN HPA 763.5 764.1 758.2 764.6 763.8 764.4 762.3 765.0 765.9 766.3 766.3 765.3 766.3 DAY 17 1 23 30 11 28 18 8 26 16 16 1 MIN. QFE PRESSURE IN HPA 750.9 749.6 743.6 750.3 756.7 756.8 754.0 755.9 758.9 757.8 755.3 747.2 743.6 DAY 2 10 14 5 23 13 3 29 28 20 7 31 MEAN QNH PRESSURE IN HPA 1022.4 1021.6 1016.2 1022.7 1026.6 1025.8 1025.4 1025.6 1027.4 1027.7 1026.8 1021.9 1024.2 MAX. QNH PRESSURE IN HPA 1030.1 1030.8 1023.3 1031.5 1030.5 1031.2 1028.5 1032.0 1033.1 1033.7 1033.7 1032.4 1033.7 DAY 17 1 23 30 11 28 18 8 26 16 16 1 MIN. QNH PRESSURE IN HPA 1014.0 1012.4 1004.7 1013.2 1021.4 1021.5 1018.0 1020.4 1024.2 1022.8 1019.6 1009.3 1004.7 DAY 2 10 14 5 23 13 3 29 28 20 7 31 MEAN QFF PRESSURE IN HPA 1021.6 1020.6 1015.0 1014.6 1010.9 1005.6 1004.0 1003.9 1009.8 1019.7 1020.7 1021.1 1014.0 MAX. QFF PRESSURE IN HPA 1035.0 1030.7 1025.9 1022.8 1016.3 1010.6 1009.6 1011.7 1016.1 1029.3 1037.9 1035.6 1037.9 DAY 12 12 22 1 1 1 29 8 24 28 30 1 MIN. QFF PRESSURE IN HPA 1014.2 1012.8 1003.0 1007.1 1003.8 1000.9 997.4 998.6 1003.6 1006.6 1009.1 1011.0 997.4 DAY 6 9 14 26 23 18 3 25 6 4 7 24 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 757.1 756.0 752.0 757.1 760.0 759.5 759.2 759.1 760.5 761.2 760.5 756.5 758.2 MAX. QFE PRESSURE IN HPA 763.5 763.1 757.5 763.8 763.2 763.9 761.5 764.3 764.6 765.5 765.5 764.5 765.5 DAY 17 1 23 30 11 28 18 7 25 15 16 1 MIN. QFE PRESSURE IN HPA 750.1 747.8 742.4 749.4 756.0 756.4 753.2 755.1 757.9 757.0 753.8 747.2 742.4 DAY 2 10 14 4 22 9 3 29 28 4 7 31 MEAN QNH PRESSURE IN HPA 1021.9 1020.5 1015.4 1021.9 1025.7 1025.0 1024.6 1024.5 1026.3 1027.1 1026.2 1021.2 1023.3 MAX. QNH PRESSURE IN HPA 1030.1 1029.6 1022.4 1030.5 1029.7 1030.6 1027.5 1031.1 1031.5 1032.6 1032.6 1031.4 1032.6 DAY 17 1 23 30 11 28 18 7 25 15 16 1 MIN. QNH PRESSURE IN HPA 1013.0 1010.1 1003.2 1012.1 1020.5 1021.0 1016.9 1019.4 1022.9 1021.8 1017.7 1009.3 1003.2 DAY 2 10 14 4 22 9 3 29 28 4 7 31 MEAN QFF PRESSURE IN HPA 1021.2 1019.7 1014.2 1014.1 1010.3 1004.5 1003.5 1002.8 1008.7 1019.1 1020.5 1020.5 1013.3 MAX. QFF PRESSURE IN HPA 1031.2 1030.7 1026.2 1023.6 1015.5 1009.7 1010.3 1013.3 1016.4 1028.9 1038.2 1034.3 1038.2 DAY 12 12 22 1 1 1 28 7 27 28 30 1 MIN. QFF PRESSURE IN HPA 1012.5 1010.0 1001.0 1006.6 1003.6 1000.1 996.3 997.3 1003.1 1005.4 1006.6 1012.0 996.3 DAY 6 4 14 19 23 18 3 25 6 4 7 13 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 757.4 756.1 752.1 757.1 760.1 759.3 759.0 759.0 760.6 761.4 760.9 757.0 758.3 MAX. QFE PRESSURE IN HPA 763.7 763.7 757.6 763.8 763.6 763.6 761.8 763.8 765.0 765.7 765.6 765.0 765.7 DAY 17 1 7 30 12 28 18 7 25 16 15 1 MIN. QFE PRESSURE IN HPA 750.1 747.1 742.4 748.0 755.6 756.4 752.9 755.3 758.3 757.0 753.8 747.3 742.4 DAY 2 10 14 4 22 13 3 29 22 4 7 30 MEAN QNH PRESSURE IN HPA 1022.4 1020.7 1015.5 1022.0 1025.7 1024.8 1024.3 1024.4 1026.4 1027.4 1026.7 1021.7 1023.5 MAX. QNH PRESSURE IN HPA 1030.3 1030.3 1022.6 1030.5 1030.2 1030.2 1027.9 1030.5 1032.0 1032.9 1032.8 1032.0 1032.9 DAY 17 1 7 30 12 28 18 7 25 16 15 1 MIN. QNH PRESSURE IN HPA 1013.0 1009.2 1003.2 1010.3 1020.0 1021.0 1016.6 1019.6 1023.5 1021.8 1017.7 1009.4 1003.2 DAY 2 10 14 4 22 13 3 29 22 4 7 30 MEAN QFF PRESSURE IN HPA 1023.6 1021.3 1015.3 1014.9 1010.7 1004.6 1003.5 1003.7 1010.5 1021.0 1022.8 1022.7 1014.5 MAX. QFF PRESSURE IN HPA 1033.9 1031.6 1027.0 1025.9 1016.0 1009.0 1009.6 1012.0 1017.0 1030.4 1038.0 1036.2 1038.0 DAY 12 7 22 1 1 1 28 7 27 28 30 1 MIN. QFF PRESSURE IN HPA 1014.4 1010.4 1004.4 1004.3 1003.6 1000.7 997.2 998.2 1004.9 1007.0 1007.3 1011.0 997.2 DAY 6 10 14 4 22 18 2 25 6 4 7 23 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 757.9 756.5 752.4 757.9 760.7 759.9 759.7 759.8 761.2 761.7 761.1 757.2 758.8 MAX. QFE PRESSURE IN HPA 764.3 763.4 757.8 764.6 763.4 763.9 762.2 764.8 765.5 766.2 766.2 765.3 766.2 DAY 17 1 23 30 11 28 18 7 25 15 15 1 MIN. QFE PRESSURE IN HPA 749.2 747.1 743.8 748.3 755.9 756.8 753.6 756.1 758.8 757.6 753.8 747.5 743.8 DAY 6 10 14 4 22 12 3 29 22 8 7 30 MEAN QNH PRESSURE IN HPA 1022.9 1021.2 1016.0 1022.9 1026.5 1025.4 1025.2 1025.4 1027.2 1027.7 1027.0 1022.0 1024.1 MAX. QNH PRESSURE IN HPA 1031.1 1030.0 1022.8 1031.5 1030.0 1030.6 1028.4 1031.7 1032.6 1033.5 1033.5 1032.4 1033.5 DAY 17 1 23 30 11 28 18 7 25 15 15 1 MIN. QNH PRESSURE IN HPA 1011.8 1009.2 1005.0 1010.7 1020.4 1021.5 1017.5 1020.6 1024.1 1022.6 1017.7 1009.7 1005.0 DAY 6 10 14 4 22 12 3 29 22 8 7 30 MEAN QFF PRESSURE IN HPA 1023.1 1021.1 1015.2 1015.0 1011.1 1005.5 1004.5 1003.9 1010.4 1020.5 1021.7 1022.0 1014.5 MAX. QFF PRESSURE IN HPA 1032.5 1031.6 1026.0 1024.2 1015.6 1009.7 1011.1 1011.5 1016.2 1030.4 1038.4 1033.9 1038.4 DAY 11 11 22 1 19 27 27 6 24 28 29 1 MIN. QFF PRESSURE IN HPA 1011.0 1009.2 1006.2 1006.9 1003.8 1002.2 996.9 998.7 1004.6 1007.6 1008.4 1010.3 996.9 DAY 6 10 19 19 22 18 2 17 5 4 7 23 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 757.5 756.3 752.2 757.7 760.3 759.7 759.5 759.6 761.1 761.4 760.9 756.8 758.6 MAX. QFE PRESSURE IN HPA 763.5 762.9 758.0 764.4 763.0 763.8 761.8 764.5 765.8 765.9 766.2 764.9 766.2 DAY 17 1 23 30 13 27 14 7 25 16 15 1 MIN. QFE PRESSURE IN HPA 748.9 747.5 744.2 749.0 755.5 756.6 754.8 756.1 758.5 757.5 754.4 747.5 744.2 DAY 6 10 13 4 22 12 3 29 22 8 7 30 MEAN QNH PRESSURE IN HPA 1022.5 1020.9 1015.7 1022.7 1026.0 1025.2 1025.0 1025.1 1027.1 1027.4 1026.8 1021.5 1023.8 MAX. QNH PRESSURE IN HPA 1030.1 1029.3 1023.1 1031.2 1029.4 1030.5 1027.9 1031.4 1033.0 1033.1 1033.5 1031.9 1033.5 DAY 17 1 23 30 13 27 14 7 25 16 15 1 MIN. QNH PRESSURE IN HPA 1011.5 1009.7 1005.5 1011.6 1019.9 1021.3 1019.0 1020.6 1023.7 1022.4 1018.5 1009.7 1005.5 DAY 6 10 13 4 22 12 3 29 22 8 7 30 MEAN QFF PRESSURE IN HPA 1021.6 1020.0 1014.6 1014.4 1010.4 1004.9 1003.6 1003.4 1009.7 1019.4 1020.9 1020.9 1013.7 MAX. QFF PRESSURE IN HPA 1033.2 1032.1 1025.2 1023.4 1016.4 1009.5 1009.8 1010.8 1015.9 1030.6 1037.6 1033.2 1037.6 DAY 11 11 22 1 19 27 28 7 25 28 29 1 MIN. QFF PRESSURE IN HPA 1009.8 1009.3 1004.1 1006.2 1002.9 1000.8 997.6 998.4 1003.9 1007.1 1009.6 1009.1 997.6 DAY 6 4 13 25 22 17 7 17 4 3 7 23 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -4.2 -4.1 0.2 6.1 13.0 17.5 20.3 19.1 16.2 10.2 3.8 -1.1 8.1 MINIMUN AIR TEMPERATURE (C) -7.8 -7.9 -3.1 2.5 8.5 12.2 15.1 14.6 11.7 6.5 0.7 -4.1 4.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 28 24 13 4 0 0 0 0 0 0 5 17 91 DAYS WITH FREEZING MIN.<= 0 31 29 27 10 0 0 0 0 0 0 15 24 136 TEMPERATURE RECORDS LOWEST(C) -13.5 -15.8 -10.8 -7.4 4.0 9.0 7.4 7.0 5.2 3.8 -7.4 -15.0 -15.8 DAY 30 7 6 2 6 7 27 26 30 23 15 29 MAXIMUM AIR TEMPERATURE (C) -0.1 0.4 4.0 10.1 17.1 22.1 25.7 24.3 21.2 14.7 7.8 2.6 12.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MAXIMUM TEMP. <= 0 20 15 2 0 0 0 0 0 0 0 0 8 45 TEMPERATURE RECORDS HIGHEST(C) 4.8 6.0 9.4 16.6 22.0 26.4 29.4 27.6 25.8 18.0 13.6 9.6 29.4 DAY 6 23 20 19 28 13 3 8 11 28 5 8 DIF. BETWEEN (MAX.-MIN.) (C) 7.7 8.3 7.1 7.6 8.6 9.9 10.6 9.7 9.5 8.2 7.1 6.7 8.4 MEAN DAILY TEMP. (MDT) (C) -4.0 -3.8 0.4 6.3 12.8 17.1 20.4 19.4 16.5 10.6 4.2 -0.8 8.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.4 20.5 5.4 0.1 0.0 0.0 0.0 26.4 HEATING DEG. DAYS(BASE 18 0C) 681.1 631.3 544.9 351.3 161.0 36.6 11.7 14.4 60.8 230.0 412.7 582.0 3718.0 DEWPOINT (MEAN C) -9.6 -9.7 -6.9 -1.5 -1.7 -1.2 5.2 4.7 -1.1 -2.6 -5.9 -9.0 -3.3 MIXING RATIO (G/KG) 2.58 2.59 3.20 4.80 4.61 4.84 7.63 7.25 4.86 4.39 3.50 2.75 4.42 VAPOUR PRESSURE (HPA) 3.11 3.12 3.85 5.79 5.58 5.84 9.16 8.73 5.89 5.34 4.25 3.32 5.33 SATURATION DEF. (HPA) 1.47 1.58 2.51 4.15 9.75 14.48 15.39 13.92 13.09 7.39 4.13 2.60 7.54 RELATIVE HUMIDITY (MEAN %) 68 68 62 61 39 31 41 42 34 45 53 58 50 RELATIVE HUMIDITY (MAX. %) 85 85 77 78 52 44 59 57 46 57 68 74 65 RELATIVE HUMIDITY (MIN. %) 53 51 46 46 28 20 27 29 23 34 38 42 36 RELATIVE HUMIDITY (MEAN% 03UTC) 68 66 63 67 47 39 49 50 42 51 55 60 55 RELATIVE HUMIDITY (MEAN% 09UTC) 61 62 57 57 35 25 33 34 27 38 44 51 44 RELATIVE HUMIDITY (MEAN% 15UTC) 74 74 62 60 33 25 32 35 29 44 58 63 49 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 74.7 78.4 161.9 92.1 23.9 3.5 28.7 47.0 1.0 35.4 61.4 77.4 685.4 DAYS WITH PRECIPITATION >=10 3 3 6 4 1 0 1 1 0 2 2 3 26 DAYS WITH PRECIPITATION >= 5 6 5 7 7 2 0 3 1 0 3 4 4 42 DAYS WITH PRECIPITATION >= 1 11 13 9 11 4 1 5 2 1 4 6 7 74 DAYS WITH PRECIPITATION 16 16 12 14 4 6 9 2 2 4 10 13 108 GREATEST DAILY PRECIPITATION 15.5 16.0 46.0 20.0 11.2 3.0 11.2 44.0 1.0 18.0 26.6 33.0 46.0 DAY 19 9 1 13 2 6 27 25 4 16 13 17 DAY WITH THUNDER STORM 0 1 2 6 5 5 8 4 2 0 0 3 36 DAYS WITH SNOW OR SLEET 19 16 12 2 0 0 0 0 0 0 6 10 65 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 270 90 270 270 270 270 45 270 270 225 270 270 270 PREVAILING WIND SPEED(KNOTS) 7.5 5.7 9.4 6.7 8.6 7.6 9.7 6.4 6.2 6.2 8.0 7.4 7.7 PREVAILING WIND PERCENT 6.5 8.2 18.5 14.6 28.2 15.0 15.7 12.9 10.8 15.7 17.5 10.9 13.6 CALMS PERCENT OF WIND 71.8 74.1 60.5 54.2 44.8 55.0 48.8 56.5 67.1 75.0 61.3 73.4 61.8 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 354 342 276 328 258 309 15 7 272 247 269 272 288 VECTOR WIND MAGNITUDE(KNOTS) 0.7 0.3 2.1 0.7 3.7 1.1 1.5 1.0 0.8 1.4 1.7 1.0 1.0 WIND STEADINESES (MEAN %) 28.0 16.7 50.0 20.0 84.1 28.9 38.5 29.4 40.0 82.4 53.1 55.6 33.3 WIND SPEED (MEAN KNOTS) 2.5 1.8 4.2 3.5 4.4 3.8 3.9 3.4 2.0 1.7 3.2 1.8 3.0 FASTEST WIND DIRECTION 30 270 250 250 270 40 30 20 30 270 20 220 270 FASTEST WIND SPEED (KNOTS) 35 39 33 39 23 31 35 29 29 16 29 29 39 DAY 19 2 21 30 1 6 26 5 21 21 20 27 DAYS WITH SKY CLEAR (0-2)/8 8 10 13 6 21 23 24 23 27 21 13 14 203 DAYS WITH P.CLOUDY (3-6)/8 15 9 10 9 9 7 7 8 3 8 9 9 103 DAYS WITH CLOUDY (7-8)/8 8 10 8 15 1 0 0 0 0 2 8 8 60 DAYS WITH VISIBILITY =< 2 KM 13 12 12 5 0 0 0 0 0 1 4 5 52 DURATION OF SUNSHINE HOURS 147.4 159.0 195.9 162.5 338.7 332.4 347.2 323.8 316.1 258.2 191.5 169.8 2942.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 754.2 753.6 752.6 757.2 758.4 757.5 757.1 758.1 760.7 762.0 759.3 755.5 757.2 MAX. QFE PRESSURE IN HPA 763.0 759.7 761.0 762.9 763.6 763.5 763.0 763.6 765.8 767.8 767.3 762.8 767.8 DAY-HOUR 3- 6 6-18 17- 6 9- 6 17- 6 12- 9 31- 6 21- 6 15- 6 28- 6 6- 6 5- 6 MIN. QFE PRESSURE IN HPA 746.2 747.4 744.6 750.3 752.1 751.6 752.7 753.7 756.9 756.0 751.2 740.9 740.9 DAY-HOUR 19- 3 3-12 5- 3 1- 3 1- 0 24- 0 1- 0 30- 0 1- 0 30-15 28-12 27- 9 MEAN QNH PRESSURE IN HPA 1018.2 1017.5 1016.2 1022.0 1023.6 1022.4 1022.0 1023.2 1026.5 1028.1 1024.8 1019.9 1022.0 MAX. QNH PRESSURE IN HPA 1029.4 1025.2 1026.9 1029.3 1030.2 1030.1 1029.4 1030.2 1033.0 1035.6 1034.9 1029.2 1035.6 DAY-HOUR 3- 6 6-18 17- 6 9- 6 17- 6 12- 9 31- 6 21- 6 15- 6 28- 6 6- 6 5- 6 MIN. QNH PRESSURE IN HPA 1008.0 1009.5 1006.0 1013.2 1015.5 1014.9 1016.3 1017.6 1021.7 1020.5 1014.4 1001.2 1001.2 DAY-HOUR 19- 3 3-12 5- 3 1- 3 1- 0 24- 0 1- 0 30- 0 1- 0 30-15 28-12 27- 9 MEAN QFF PRESSURE IN HPA 1021.6 1020.7 1014.4 1014.1 1008.8 1003.3 999.7 1002.0 1008.5 1016.2 1019.5 1019.8 1012.4 MAX. QFF PRESSURE IN HPA 1035.2 1038.4 1027.6 1028.3 1015.9 1012.0 1009.1 1010.4 1017.3 1027.1 1030.2 1033.9 1038.4 DAY-HOUR 3- 6 6-18 17- 3 3- 6 4-18 7- 6 27-12 26- 6 30- 3 16-21 15-15 29-15 MIN. QFF PRESSURE IN HPA 1010.7 1004.5 1002.9 1003.3 1001.9 995.4 993.9 996.0 999.4 1007.6 1010.0 1001.2 993.9 DAY-HOUR 29- 0 2-12 5- 3 25-12 29- 0 16-15 16-12 30- 0 12- 0 30-21 20- 0 27- 6 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 753.9 753.2 752.1 756.7 757.9 757.4 756.9 757.8 760.3 761.7 759.1 755.3 756.9 MAX. QFE PRESSURE IN HPA 761.6 759.1 759.3 761.4 762.4 763.1 762.2 761.6 765.3 766.0 765.8 761.4 766.0 DAY 10 7 17 9 17 13 31 21 15 28 6 6 MIN. QFE PRESSURE IN HPA 746.8 748.0 744.7 750.8 752.1 751.6 752.7 753.7 756.9 756.3 751.5 744.0 744.0 DAY 19 17 5 1 1 24 1 30 1 31 29 27 MEAN QNH PRESSURE IN HPA 1017.8 1016.9 1015.6 1021.4 1022.9 1022.3 1021.6 1022.8 1026.1 1027.8 1024.5 1019.7 1021.6 MAX. QNH PRESSURE IN HPA 1027.7 1024.5 1024.7 1027.4 1028.7 1029.6 1028.4 1027.7 1032.4 1033.3 1033.0 1027.4 1033.3 DAY 10 7 17 9 17 13 31 21 15 28 6 6 MIN. QNH PRESSURE IN HPA 1008.8 1010.3 1006.1 1013.9 1015.5 1014.9 1016.3 1017.6 1021.7 1020.9 1014.8 1005.2 1005.2 DAY 19 17 5 1 1 24 1 30 1 31 29 27 MEAN QFF PRESSURE IN HPA 1020.8 1019.4 1013.4 1013.0 1008.1 1003.2 999.0 1001.2 1007.5 1015.4 1018.3 1019.1 1011.5 MAX. QFF PRESSURE IN HPA 1032.1 1036.1 1024.6 1027.5 1013.5 1011.3 1007.8 1007.5 1015.1 1025.1 1026.0 1031.1 1036.1 DAY 3 7 17 9 17 8 28 26 30 17 16 30 MIN. QFF PRESSURE IN HPA 1010.7 1007.4 1003.1 1004.0 1001.9 995.8 994.3 996.0 999.4 1008.0 1010.0 1005.0 994.3 DAY 29 2 5 25 29 24 18 30 12 31 20 27 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 753.8 753.2 752.4 756.8 758.2 757.7 757.2 758.2 760.6 761.8 759.2 755.4 757.0 MAX. QFE PRESSURE IN HPA 761.6 758.8 760.1 761.4 763.0 763.3 762.9 762.5 765.3 766.3 766.3 761.5 766.3 DAY 3 7 17 9 17 13 31 21 15 28 6 5 MIN. QFE PRESSURE IN HPA 746.2 747.9 744.6 750.3 752.3 752.2 753.1 754.4 757.4 756.5 752.8 743.0 743.0 DAY 19 17 5 1 1 24 8 30 2 31 29 27 MEAN QNH PRESSURE IN HPA 1017.7 1017.0 1015.9 1021.6 1023.3 1022.7 1022.1 1023.4 1026.4 1027.9 1024.7 1019.7 1021.9 MAX. QNH PRESSURE IN HPA 1027.7 1024.1 1025.7 1027.4 1029.4 1029.8 1029.3 1028.8 1032.4 1033.7 1033.7 1027.5 1033.7 DAY 3 7 17 9 17 13 31 21 15 28 6 5 MIN. QNH PRESSURE IN HPA 1008.0 1010.2 1006.0 1013.2 1015.8 1015.7 1016.8 1018.5 1022.3 1021.2 1016.4 1003.9 1003.9 DAY 19 17 5 1 1 24 8 30 2 31 29 27 MEAN QFF PRESSURE IN HPA 1022.2 1021.3 1014.8 1014.2 1008.7 1003.6 999.9 1002.6 1009.4 1017.2 1020.5 1020.6 1012.9 MAX. QFF PRESSURE IN HPA 1035.0 1038.2 1027.6 1027.3 1015.4 1010.8 1007.7 1008.5 1017.3 1025.5 1027.8 1031.5 1038.2 DAY 3 7 17 3 7 8 28 26 30 17 16 29 MIN. QFF PRESSURE IN HPA 1010.8 1007.6 1002.9 1004.4 1003.3 996.5 994.3 997.4 1001.2 1010.1 1012.8 1003.1 994.3 DAY 29 2 5 25 28 17 18 3 12 7 11 27 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 754.7 754.2 753.2 757.7 758.9 758.1 757.7 758.8 761.4 762.6 760.1 756.2 757.8 MAX. QFE PRESSURE IN HPA 763.0 759.7 761.0 762.9 763.6 763.5 763.0 763.6 765.8 767.8 767.3 762.8 767.8 DAY 3 7 17 9 17 13 31 21 15 28 6 5 MIN. QFE PRESSURE IN HPA 747.2 748.7 745.9 752.5 753.3 752.7 754.0 755.1 758.1 757.7 753.5 741.5 741.5 DAY 19 3 5 1 1 24 8 30 2 31 20 27 MEAN QNH PRESSURE IN HPA 1018.9 1018.2 1016.9 1022.7 1024.2 1023.2 1022.7 1024.1 1027.4 1028.9 1025.7 1020.8 1022.8 MAX. QNH PRESSURE IN HPA 1029.4 1025.2 1026.9 1029.3 1030.2 1030.1 1029.4 1030.2 1033.0 1035.6 1034.9 1029.2 1035.6 DAY 3 7 17 9 17 13 31 21 15 28 6 5 MIN. QNH PRESSURE IN HPA 1009.3 1011.2 1007.6 1016.1 1017.1 1016.3 1018.0 1019.4 1023.2 1022.7 1017.3 1002.0 1002.0 DAY 19 3 5 1 1 24 8 30 2 31 20 27 MEAN QFF PRESSURE IN HPA 1022.8 1022.0 1015.3 1015.0 1009.5 1004.1 1000.8 1003.2 1009.6 1016.9 1020.5 1020.8 1013.4 MAX. QFF PRESSURE IN HPA 1035.2 1037.9 1025.9 1028.3 1015.7 1012.0 1007.0 1010.4 1017.0 1024.9 1026.1 1033.6 1037.9 DAY 3 7 17 3 5 7 31 26 30 17 6 29 MIN. QFF PRESSURE IN HPA 1011.5 1007.5 1004.7 1006.0 1004.1 996.7 996.9 997.8 1002.2 1009.5 1012.9 1001.2 996.7 DAY 29 2 27 25 29 16 25 4 12 7 11 27 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 754.4 754.0 752.9 757.7 758.8 757.8 757.4 758.5 761.0 762.1 759.4 755.5 757.5 MAX. QFE PRESSURE IN HPA 763.0 759.4 760.5 762.9 763.6 763.5 762.4 762.8 765.3 767.4 766.0 762.4 767.4 DAY 3 7 17 9 17 12 31 21 15 28 6 5 MIN. QFE PRESSURE IN HPA 747.1 748.2 745.7 752.9 753.8 752.3 754.0 755.1 757.7 757.2 752.6 740.9 740.9 DAY 19 3 5 1 1 24 8 30 2 30 28 27 MEAN QNH PRESSURE IN HPA 1018.5 1017.9 1016.6 1022.6 1024.0 1022.8 1022.4 1023.7 1026.9 1028.3 1024.8 1019.8 1022.4 MAX. QNH PRESSURE IN HPA 1029.4 1024.9 1026.3 1029.3 1030.2 1030.1 1028.7 1029.2 1032.4 1035.1 1033.3 1028.7 1035.1 DAY 3 7 17 9 17 12 31 21 15 28 6 5 MIN. QNH PRESSURE IN HPA 1009.2 1010.6 1007.4 1016.6 1017.7 1015.8 1018.0 1019.4 1022.7 1022.0 1016.2 1001.2 1001.2 DAY 19 3 5 1 1 24 8 30 2 30 28 27 MEAN QFF PRESSURE IN HPA 1020.9 1020.6 1014.3 1014.6 1009.1 1003.3 1000.1 1002.2 1008.4 1015.9 1018.8 1019.0 1012.3 MAX. QFF PRESSURE IN HPA 1031.8 1034.7 1024.9 1026.6 1015.7 1011.0 1005.8 1008.3 1015.8 1025.4 1026.4 1031.8 1034.7 DAY 3 7 17 9 6 7 27 26 30 16 15 29 MIN. QFF PRESSURE IN HPA 1011.4 1005.7 1003.7 1005.8 1003.8 996.0 995.6 996.6 1000.9 1008.4 1011.0 1001.5 995.6 DAY 29 2 21 23 29 23 17 4 12 30 20 27 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 753.8 753.3 752.3 756.8 758.2 757.2 756.7 757.7 760.2 761.5 758.8 755.0 756.8 MAX. QFE PRESSURE IN HPA 762.1 758.4 759.3 761.8 762.3 762.8 761.6 761.8 764.7 766.9 765.4 761.5 766.9 DAY 3 7 17 12 17 12 31 21 14 28 6 5 MIN. QFE PRESSURE IN HPA 746.3 747.4 745.6 752.6 754.0 752.3 753.1 754.6 757.0 756.2 751.2 741.2 741.2 DAY 29 3 5 30 1 24 8 29 2 30 28 27 MEAN QNH PRESSURE IN HPA 1017.8 1017.0 1015.8 1021.6 1023.3 1022.1 1021.5 1022.7 1025.9 1027.5 1024.1 1019.2 1021.5 MAX. QNH PRESSURE IN HPA 1028.3 1023.6 1024.7 1027.9 1028.5 1029.2 1027.7 1027.9 1031.6 1034.4 1032.5 1027.5 1034.4 DAY 3 7 17 12 17 12 31 21 14 28 6 5 MIN. QNH PRESSURE IN HPA 1008.1 1009.5 1007.2 1016.2 1018.0 1015.8 1016.8 1018.7 1021.8 1020.8 1014.4 1001.6 1001.6 DAY 29 3 5 30 1 24 8 29 2 30 28 27 MEAN QFF PRESSURE IN HPA 1020.5 1019.2 1013.4 1013.1 1008.3 1003.0 998.7 1001.2 1007.4 1015.1 1018.2 1018.7 1011.4 MAX. QFF PRESSURE IN HPA 1030.7 1033.4 1023.6 1025.5 1013.8 1010.9 1009.1 1008.4 1015.4 1025.4 1027.7 1032.0 1033.4 DAY 3 7 17 3 4 7 27 14 30 16 15 29 MIN. QFF PRESSURE IN HPA 1010.8 1004.5 1005.4 1003.3 1002.7 996.6 993.9 996.7 999.9 1008.0 1011.4 1005.0 993.9 DAY 29 2 21 25 28 23 16 4 12 30 28 27 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 754.2 753.6 752.5 756.9 758.1 757.0 756.5 757.6 760.2 761.8 759.3 755.4 756.9 MAX. QFE PRESSURE IN HPA 762.2 758.7 759.3 761.5 762.3 762.5 761.5 761.4 764.7 767.3 765.9 761.9 767.3 DAY 3 6 17 12 17 12 31 21 14 28 6 5 MIN. QFE PRESSURE IN HPA 747.3 748.1 746.2 753.1 754.3 752.3 752.8 754.0 757.0 756.0 751.4 742.5 742.5 DAY 29 2 5 30 1 30 8 29 2 30 28 27 MEAN QNH PRESSURE IN HPA 1018.2 1017.5 1016.0 1021.7 1023.2 1021.8 1021.1 1022.5 1025.9 1027.9 1024.7 1019.8 1021.7 MAX. QNH PRESSURE IN HPA 1028.4 1024.0 1024.7 1027.5 1028.5 1028.8 1027.5 1027.4 1031.6 1034.9 1033.1 1028.0 1034.9 DAY 3 6 17 12 17 12 31 21 14 28 6 5 MIN. QNH PRESSURE IN HPA 1009.4 1010.4 1008.0 1016.8 1018.3 1015.8 1016.4 1018.0 1021.8 1020.5 1014.6 1003.3 1003.3 DAY 29 2 5 30 1 30 8 29 2 30 28 27 MEAN QFF PRESSURE IN HPA 1022.5 1021.6 1014.8 1014.2 1008.6 1002.8 998.9 1001.9 1009.1 1017.3 1020.6 1020.8 1012.8 MAX. QFF PRESSURE IN HPA 1033.8 1036.6 1024.9 1026.2 1015.6 1009.8 1007.1 1007.9 1016.9 1025.5 1030.2 1033.9 1036.6 DAY 3 6 17 8 6 7 27 26 30 16 15 29 MIN. QFF PRESSURE IN HPA 1015.1 1005.4 1005.2 1004.4 1002.4 995.4 994.6 996.6 1002.4 1009.6 1011.8 1005.9 994.6 DAY 29 2 4 25 28 16 8 3 12 7 28 26 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 754.6 754.0 752.9 757.7 758.7 757.6 757.3 758.1 760.9 762.2 759.5 755.8 757.4 MAX. QFE PRESSURE IN HPA 762.3 759.7 759.3 762.7 762.3 763.1 762.7 761.7 765.3 767.5 766.1 762.5 767.5 DAY 10 6 17 12 16 12 30 21 14 28 5 5 MIN. QFE PRESSURE IN HPA 748.8 748.5 746.4 752.8 755.4 752.7 753.5 754.3 757.6 756.3 751.5 744.1 744.1 DAY 29 2 4 30 1 23 8 29 1 30 28 27 MEAN QNH PRESSURE IN HPA 1018.8 1018.0 1016.6 1022.7 1023.9 1022.5 1022.2 1023.2 1026.8 1028.5 1025.0 1020.3 1022.4 MAX. QNH PRESSURE IN HPA 1028.5 1025.2 1024.7 1029.1 1028.5 1029.6 1029.1 1027.8 1032.4 1035.2 1033.4 1028.8 1035.2 DAY 10 6 17 12 16 12 30 21 14 28 5 5 MIN. QNH PRESSURE IN HPA 1011.3 1011.0 1008.3 1016.4 1019.8 1016.3 1017.3 1018.3 1022.6 1020.9 1014.8 1005.3 1005.3 DAY 29 2 4 30 1 23 8 29 1 30 28 27 MEAN QFF PRESSURE IN HPA 1022.5 1021.6 1015.0 1014.9 1009.3 1003.4 1000.1 1002.3 1009.0 1016.5 1019.9 1020.4 1012.9 MAX. QFF PRESSURE IN HPA 1033.8 1038.4 1022.9 1027.4 1015.9 1010.9 1007.1 1008.8 1016.2 1026.9 1028.5 1032.9 1038.4 DAY 2 6 17 2 4 7 30 25 29 16 15 29 MIN. QFF PRESSURE IN HPA 1013.7 1007.0 1003.9 1005.0 1002.6 996.3 995.7 997.1 1002.5 1007.8 1010.4 1005.9 995.7 DAY 18 2 4 25 28 15 17 4 11 30 10 26 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 754.3 753.6 752.7 757.3 758.6 757.4 757.4 758.1 760.7 762.0 759.3 755.6 757.3 MAX. QFE PRESSURE IN HPA 761.6 759.1 759.3 761.8 762.6 763.2 762.8 761.7 765.1 766.8 766.2 762.1 766.8 DAY 10 6 16 8 16 12 30 21 14 28 5 5 MIN. QFE PRESSURE IN HPA 748.3 748.8 746.1 752.4 755.9 751.8 754.2 754.3 757.4 756.3 751.5 745.3 745.3 DAY 18 2 4 30 11 23 17 29 1 30 28 26 MEAN QNH PRESSURE IN HPA 1018.3 1017.5 1016.3 1022.1 1023.8 1022.3 1022.3 1023.2 1026.6 1028.2 1024.8 1020.0 1022.1 MAX. QNH PRESSURE IN HPA 1027.7 1024.5 1024.7 1027.9 1028.9 1029.7 1029.2 1027.8 1032.1 1034.3 1033.5 1028.3 1034.3 DAY 10 6 16 8 16 12 30 21 14 28 5 5 MIN. QNH PRESSURE IN HPA 1010.7 1011.3 1007.9 1015.9 1020.4 1015.2 1018.2 1018.3 1022.3 1020.9 1014.8 1006.9 1006.9 DAY 18 2 4 30 11 23 17 29 1 30 28 26 MEAN QFF PRESSURE IN HPA 1020.7 1020.1 1014.1 1014.0 1008.8 1002.8 999.9 1001.8 1008.2 1015.8 1018.9 1019.3 1012.0 MAX. QFF PRESSURE IN HPA 1031.7 1036.7 1024.0 1028.3 1014.4 1010.0 1006.1 1007.7 1015.4 1027.1 1027.7 1031.6 1036.7 DAY 2 6 17 8 16 7 27 26 29 16 15 21 MIN. QFF PRESSURE IN HPA 1011.5 1008.2 1004.0 1005.2 1002.5 995.6 995.0 996.4 1000.9 1007.6 1011.7 1005.2 995.0 DAY 18 2 4 23 28 23 17 29 11 30 10 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -7.6 -6.3 0.6 7.9 12.0 19.2 21.8 20.4 16.1 11.3 3.4 -1.1 8.2 MINIMUN AIR TEMPERATURE (C) -11.1 -10.2 -2.5 3.4 7.1 13.6 16.9 15.6 11.1 7.4 0.2 -3.9 4.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 31 28 7 1 0 0 0 0 0 0 1 16 84 DAYS WITH FREEZING MIN.<= 0 31 28 26 3 1 0 0 0 0 0 12 30 131 TEMPERATURE RECORDS LOWEST(C) -17.0 -16.0 -14.0 -5.4 -0.6 9.0 13.4 12.4 3.5 1.0 -4.6 -8.8 -17.0 DAY 5 3 31 1 1 1 27 23 23 24 22 8 MAXIMUM AIR TEMPERATURE (C) -3.3 -1.4 4.6 12.5 16.8 23.9 26.9 25.7 21.3 16.2 7.4 2.7 12.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 4 0 0 0 0 0 4 DAYS WITH MAXIMUM TEMP. <= 0 28 19 1 0 0 0 0 0 0 0 0 4 52 TEMPERATURE RECORDS HIGHEST(C) 2.5 4.8 9.0 18.0 24.0 29.6 30.6 28.2 26.8 21.6 12.6 8.0 30.6 DAY 19 22 26 28 25 30 10 4 2 7 28 1 DIF. BETWEEN (MAX.-MIN.) (C) 7.8 8.8 7.1 9.1 9.7 10.3 10.0 10.1 10.2 8.8 7.2 6.6 8.8 MEAN DAILY TEMP. (MDT) (C) -7.2 -5.8 1.0 8.0 11.9 18.7 21.9 20.7 16.2 11.8 3.8 -0.6 8.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 8.3 38.5 13.7 3.0 0.0 0.0 0.0 63.5 HEATING DEG. DAYS(BASE 18 0C) 780.8 666.3 525.6 300.1 183.1 25.4 0.0 0.6 86.7 192.3 425.3 577.2 3763.2 DEWPOINT (MEAN C) -13.7 -13.4 -4.6 -6.6 -3.1 -3.3 1.3 0.6 -4.5 -4.8 -4.9 -6.8 -5.3 MIXING RATIO (G/KG) 1.87 1.92 3.73 3.19 4.17 4.16 5.80 5.44 3.76 3.62 3.62 3.20 3.71 VAPOUR PRESSURE (HPA) 2.25 2.32 4.49 3.88 5.06 5.03 7.01 6.58 4.57 4.41 4.39 3.86 4.49 SATURATION DEF. (HPA) 1.28 1.63 2.07 7.20 9.68 17.79 19.67 17.81 14.68 9.46 3.56 1.88 8.89 RELATIVE HUMIDITY (MEAN %) 64 60 70 38 39 24 28 29 28 35 57 68 45 RELATIVE HUMIDITY (MAX. %) 81 75 85 51 53 36 40 41 40 48 71 84 59 RELATIVE HUMIDITY (MIN. %) 48 46 54 26 27 16 18 20 18 24 41 51 32 RELATIVE HUMIDITY (MEAN% 03UTC) 64 62 72 42 45 32 36 34 33 39 64 68 49 RELATIVE HUMIDITY (MEAN% 09UTC) 61 54 64 32 33 19 23 22 21 27 46 59 38 RELATIVE HUMIDITY (MEAN% 15UTC) 68 68 71 39 33 19 21 25 25 38 59 78 45 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 51.0 60.8 112.6 5.9 28.3 7.4 0.5 0.1 3.3 1.6 7.2 89.8 368.5 DAYS WITH PRECIPITATION >=10 1 3 5 0 1 0 0 0 0 0 0 4 14 DAYS WITH PRECIPITATION >= 5 4 5 8 1 1 0 0 0 0 0 0 6 25 DAYS WITH PRECIPITATION >= 1 9 8 14 1 2 2 0 0 1 1 2 8 48 DAYS WITH PRECIPITATION 15 9 16 5 10 3 1 4 1 2 6 13 85 GREATEST DAILY PRECIPITATION 10.0 17.0 26.0 5.0 22.3 4.4 0.5 0.0 3.3 1.5 2.9 33.0 33.0 DAY 12 19 11 13 7 7 16 ** 22 31 15 4 DAY WITH THUNDER STORM 0 0 5 1 3 3 0 0 0 1 1 1 15 DAYS WITH SNOW OR SLEET 16 10 15 1 0 0 0 0 0 0 5 13 60 DAYS WITH DUST 0 0 0 0 1 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 45 360 225 45 270 270 270 270 270 225 270 270 270 PREVAILING WIND SPEED(KNOTS) 14.5 17.8 5.7 15.4 8.8 8.0 7.2 6.8 6.7 7.0 8.0 7.2 7.7 PREVAILING WIND PERCENT 6.9 5.8 8.1 17.1 25.4 19.6 17.7 15.3 15.8 15.3 15.8 12.5 13.4 CALMS PERCENT OF WIND 74.6 80.8 70.6 51.7 42.7 40.8 38.7 50.4 55.0 62.9 65.8 74.6 58.9 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 25 23 335 7 281 292 332 312 298 280 253 316 316 VECTOR WIND MAGNITUDE(KNOTS) 1.2 1.6 0.6 2.1 2.4 0.9 1.2 0.7 1.3 1.3 2.1 1.0 1.0 WIND STEADINESES (MEAN %) 57.1 76.2 24.0 42.9 49.0 19.6 24.0 20.0 38.2 39.4 80.8 41.7 29.4 WIND SPEED (MEAN KNOTS) 2.1 2.1 2.5 4.9 4.9 4.6 5.0 3.5 3.4 3.3 2.6 2.4 3.4 FASTEST WIND DIRECTION 30 30 30 30 20 300 30 30 30 30 240 30 30 FASTEST WIND SPEED (KNOTS) 27 33 23 39 25 23 33 19 29 27 19 29 39 DAY 18 2 17 29 14 8 29 13 19 9 19 20 DAYS WITH SKY CLEAR (0-2)/8 17 15 4 9 16 29 27 21 26 22 13 13 212 DAYS WITH P.CLOUDY (3-6)/8 8 7 16 14 12 0 4 10 4 7 14 9 105 DAYS WITH CLOUDY (7-8)/8 6 6 11 7 3 1 0 0 0 2 3 9 48 DAYS WITH VISIBILITY =< 2 KM 11 8 10 0 1 1 0 0 0 0 1 8 40 DURATION OF SUNSHINE HOURS 193.9 202.6 151.5 241.0 297.0 313.6 354.2 324.3 312.7 277.4 206.3 151.6 3026.1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 752.6 754.7 753.7 759.1 759.4 758.3 759.7 759.8 760.0 762.3 759.6 755.7 757.9 MAX. QFE PRESSURE IN HPA 760.7 760.8 759.9 762.9 763.7 762.1 763.8 762.8 766.3 767.9 764.3 761.3 767.9 DAY-HOUR 22- 6 8- 6 8- 6 11- 6 25- 6 26- 6 20- 6 7- 6 24- 6 27- 6 29- 6 18-18 MIN. QFE PRESSURE IN HPA 745.1 746.4 741.8 753.7 754.9 753.2 755.1 753.8 755.1 756.6 753.8 748.6 741.8 DAY-HOUR 17-12 14- 3 30- 3 1- 0 8- 0 10-15 5-15 1-12 13- 9 2- 0 25- 0 5- 9 MEAN QNH PRESSURE IN HPA 1016.2 1018.9 1017.5 1024.5 1024.9 1023.5 1025.3 1025.4 1025.6 1028.5 1025.1 1020.1 1022.9 MAX. QNH PRESSURE IN HPA 1026.5 1026.6 1025.5 1029.3 1030.3 1028.3 1030.5 1029.2 1033.7 1035.7 1031.1 1027.3 1035.7 DAY-HOUR 22- 6 8- 6 8- 6 11- 6 25- 6 26- 6 20- 6 7- 6 24- 6 27- 6 29- 6 18-18 MIN. QNH PRESSURE IN HPA 1006.6 1008.3 1002.4 1017.6 1019.1 1016.9 1019.4 1017.7 1019.4 1021.3 1017.7 1011.1 1002.4 DAY-HOUR 17-12 14- 3 30- 3 1- 0 8- 0 10-15 5-15 1-12 13- 9 2- 0 25- 0 5- 9 MEAN QFF PRESSURE IN HPA 1023.4 1024.9 1015.2 1015.1 1011.3 1002.9 1002.0 1003.4 1008.0 1015.7 1020.2 1019.9 1013.5 MAX. QFF PRESSURE IN HPA 1034.7 1038.0 1023.4 1023.3 1021.2 1011.0 1007.9 1010.3 1024.3 1026.8 1027.1 1028.9 1038.0 DAY-HOUR 27-15 4- 3 31-15 2- 6 1- 6 2- 6 20- 6 19-18 23- 3 24- 6 22-15 18-18 MIN. QFF PRESSURE IN HPA 1011.8 1007.7 1002.3 1005.9 998.8 996.6 995.7 995.1 997.8 1005.9 1013.8 1009.2 995.1 DAY-HOUR 11-21 23- 0 15-21 29- 0 31-21 30-21 7- 0 2- 0 11-12 2- 9 15-21 5- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 752.3 754.2 753.3 758.7 759.0 757.9 759.5 759.5 759.8 762.0 759.3 755.6 757.6 MAX. QFE PRESSURE IN HPA 759.7 759.9 759.2 762.3 762.2 761.0 763.2 762.0 765.4 766.2 763.6 759.6 766.2 DAY 22 8 8 11 25 26 20 8 24 27 29 19 MIN. QFE PRESSURE IN HPA 746.5 746.6 742.5 753.7 754.9 753.8 755.9 754.2 755.4 756.6 753.8 749.3 742.5 DAY 5 23 30 1 8 11 7 2 13 2 25 5 MEAN QNH PRESSURE IN HPA 1015.8 1018.2 1017.0 1024.0 1024.4 1023.0 1025.0 1025.0 1025.4 1028.2 1024.8 1020.0 1022.6 MAX. QNH PRESSURE IN HPA 1025.2 1025.5 1024.6 1028.5 1028.4 1026.9 1029.7 1028.2 1032.5 1033.5 1030.2 1025.1 1033.5 DAY 22 8 8 11 25 26 20 8 24 27 29 19 MIN. QNH PRESSURE IN HPA 1008.4 1008.5 1003.3 1017.6 1019.1 1017.7 1020.4 1018.2 1019.8 1021.3 1017.7 1012.0 1003.3 DAY 5 23 30 1 8 11 7 2 13 2 25 5 MEAN QFF PRESSURE IN HPA 1022.3 1023.7 1014.6 1014.5 1011.0 1002.4 1001.5 1003.0 1007.2 1014.6 1019.4 1019.4 1012.8 MAX. QFF PRESSURE IN HPA 1032.9 1035.1 1021.0 1020.7 1018.7 1007.6 1007.1 1008.5 1022.5 1023.2 1024.7 1026.2 1035.1 DAY 30 4 13 2 1 2 20 20 23 25 8 18 MIN. QFF PRESSURE IN HPA 1012.2 1007.7 1003.9 1005.9 1003.2 997.3 995.7 995.1 999.1 1006.0 1014.5 1009.2 995.1 DAY 12 23 16 29 27 30 7 2 12 2 20 5 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 752.1 754.1 753.4 758.9 759.4 758.3 759.9 759.9 760.1 762.2 759.4 755.5 757.8 MAX. QFE PRESSURE IN HPA 759.2 759.9 759.2 762.6 762.9 761.4 763.5 762.3 765.4 767.1 763.6 759.0 767.1 DAY 22 8 8 11 25 27 20 8 24 27 29 1 MIN. QFE PRESSURE IN HPA 745.3 746.4 741.8 753.7 755.5 754.2 756.1 755.3 755.7 756.6 754.2 748.9 741.8 DAY 17 14 30 1 8 11 6 2 13 2 25 5 MEAN QNH PRESSURE IN HPA 1015.6 1018.1 1017.2 1024.2 1024.8 1023.4 1025.5 1025.5 1025.7 1028.5 1024.9 1019.8 1022.8 MAX. QNH PRESSURE IN HPA 1024.6 1025.5 1024.6 1028.9 1029.3 1027.4 1030.1 1028.5 1032.5 1034.7 1030.2 1024.3 1034.7 DAY 22 8 8 11 25 27 20 8 24 27 29 1 MIN. QNH PRESSURE IN HPA 1006.9 1008.3 1002.4 1017.6 1019.9 1018.2 1020.6 1019.6 1020.1 1021.3 1018.2 1011.5 1002.4 DAY 17 14 30 1 8 11 6 2 13 2 25 5 MEAN QFF PRESSURE IN HPA 1024.1 1025.7 1015.6 1015.7 1011.6 1002.8 1002.2 1004.1 1009.0 1017.1 1021.4 1020.7 1014.2 MAX. QFF PRESSURE IN HPA 1034.5 1038.0 1022.1 1022.5 1020.8 1008.1 1007.4 1010.2 1024.3 1025.6 1026.7 1026.5 1038.0 DAY 27 4 1 2 1 2 20 19 23 24 22 19 MIN. QFF PRESSURE IN HPA 1013.1 1009.3 1003.9 1006.7 1003.8 997.9 996.3 998.3 1001.4 1008.8 1014.6 1009.9 996.3 DAY 12 23 30 29 28 30 7 2 12 2 25 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 753.3 755.1 754.2 759.7 759.9 758.9 760.3 760.5 760.7 763.0 760.2 756.2 758.5 MAX. QFE PRESSURE IN HPA 760.7 760.8 759.9 762.9 763.7 762.1 763.8 762.8 766.3 767.9 764.3 759.9 767.9 DAY 22 8 8 11 25 26 20 7 24 27 29 1 MIN. QFE PRESSURE IN HPA 745.9 746.8 742.3 755.3 756.4 754.4 756.7 755.4 756.4 757.1 756.3 748.9 742.3 DAY 17 14 30 1 8 10 6 1 12 2 25 5 MEAN QNH PRESSURE IN HPA 1017.1 1019.4 1018.2 1025.2 1025.5 1024.3 1026.0 1026.3 1026.5 1029.4 1025.9 1020.8 1023.7 MAX. QNH PRESSURE IN HPA 1026.5 1026.6 1025.5 1029.3 1030.3 1028.3 1030.5 1029.2 1033.7 1035.7 1031.1 1025.5 1035.7 DAY 22 8 8 11 25 26 20 7 24 27 29 1 MIN. QNH PRESSURE IN HPA 1007.6 1008.8 1003.0 1019.6 1021.0 1018.5 1021.4 1019.8 1021.0 1021.9 1020.9 1011.5 1003.0 DAY 17 14 30 1 8 10 6 1 12 2 25 5 MEAN QFF PRESSURE IN HPA 1024.7 1025.7 1015.8 1015.9 1012.1 1004.0 1002.9 1004.5 1008.8 1016.5 1021.1 1020.6 1014.4 MAX. QFF PRESSURE IN HPA 1033.9 1037.4 1022.0 1023.3 1021.2 1011.0 1007.9 1009.6 1023.8 1026.8 1026.6 1027.2 1037.4 DAY 30 4 31 2 1 2 20 20 23 24 22 18 MIN. QFF PRESSURE IN HPA 1014.2 1010.2 1004.9 1007.7 1004.5 998.8 997.2 998.1 999.8 1006.2 1015.7 1009.9 997.2 DAY 12 23 30 29 26 30 7 2 12 2 15 5 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 752.9 755.0 754.2 759.4 759.8 758.7 760.0 760.1 760.3 762.5 759.6 755.6 758.2 MAX. QFE PRESSURE IN HPA 759.7 760.6 759.6 762.6 763.2 761.9 763.2 762.4 765.7 767.5 763.1 759.8 767.5 DAY 22 8 8 9 25 26 10 7 24 27 8 18 MIN. QFE PRESSURE IN HPA 745.7 747.3 742.9 755.5 757.0 754.4 756.2 754.8 755.1 757.1 756.1 748.6 742.9 DAY 17 14 30 29 8 10 6 1 13 2 20 5 MEAN QNH PRESSURE IN HPA 1016.5 1019.3 1018.2 1024.9 1025.3 1024.0 1025.6 1025.7 1026.0 1028.7 1025.1 1020.1 1023.3 MAX. QNH PRESSURE IN HPA 1025.2 1026.4 1025.1 1028.9 1029.7 1028.0 1029.7 1028.7 1032.9 1035.2 1029.6 1025.4 1035.2 DAY 22 8 8 9 25 26 10 7 24 27 8 18 MIN. QNH PRESSURE IN HPA 1007.4 1009.4 1003.8 1019.9 1021.8 1018.5 1020.8 1019.0 1019.4 1021.9 1020.6 1011.1 1003.8 DAY 17 14 30 29 8 10 6 1 13 2 20 5 MEAN QFF PRESSURE IN HPA 1022.6 1024.3 1015.5 1014.9 1011.5 1003.2 1002.1 1003.4 1007.8 1015.1 1019.4 1018.9 1013.2 MAX. QFF PRESSURE IN HPA 1033.1 1036.5 1022.4 1021.8 1018.7 1008.4 1007.3 1008.2 1022.3 1024.0 1024.3 1026.8 1036.5 DAY 27 4 31 2 1 2 20 20 23 24 22 18 MIN. QFF PRESSURE IN HPA 1012.8 1009.7 1005.5 1006.0 1003.2 997.9 996.5 997.2 999.3 1005.9 1014.3 1010.8 996.5 DAY 12 23 27 29 31 30 6 1 13 2 16 5 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 752.2 754.5 753.4 758.6 759.1 758.1 759.3 759.3 759.6 761.8 759.1 755.2 757.5 MAX. QFE PRESSURE IN HPA 758.5 760.0 759.0 761.3 762.4 761.1 762.6 762.1 765.2 766.5 762.4 759.8 766.5 DAY 22 8 8 10 24 25 10 7 23 27 8 18 MIN. QFE PRESSURE IN HPA 745.1 747.0 744.4 754.8 756.4 753.8 756.0 753.8 755.3 757.1 755.1 749.9 744.4 DAY 17 1 30 29 7 10 6 1 12 2 24 5 MEAN QNH PRESSURE IN HPA 1015.7 1018.6 1017.2 1023.8 1024.5 1023.3 1024.8 1024.8 1025.1 1027.9 1024.5 1019.5 1022.5 MAX. QNH PRESSURE IN HPA 1023.7 1025.6 1024.3 1027.3 1028.7 1027.0 1028.9 1028.3 1032.2 1033.9 1028.7 1025.4 1033.9 DAY 22 8 8 10 24 25 10 7 23 27 8 18 MIN. QNH PRESSURE IN HPA 1006.6 1009.0 1005.7 1019.0 1021.0 1017.7 1020.5 1017.7 1019.6 1021.9 1019.4 1012.7 1005.7 DAY 17 1 30 29 7 10 6 1 12 2 24 5 MEAN QFF PRESSURE IN HPA 1022.1 1023.8 1014.7 1014.0 1010.9 1002.6 1001.3 1002.8 1007.0 1014.4 1019.2 1018.9 1012.6 MAX. QFF PRESSURE IN HPA 1032.7 1034.2 1022.0 1020.8 1018.8 1008.3 1005.7 1007.2 1021.0 1023.1 1023.6 1026.7 1034.2 DAY 30 4 31 2 1 2 20 20 23 24 22 18 MIN. QFF PRESSURE IN HPA 1012.1 1009.8 1004.5 1009.1 1000.5 997.5 996.3 995.4 997.8 1006.5 1014.4 1011.7 995.4 DAY 12 23 27 29 31 30 6 1 11 2 16 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 752.6 754.9 753.5 758.7 759.0 757.9 759.2 759.3 759.6 762.0 759.5 755.7 757.7 MAX. QFE PRESSURE IN HPA 758.8 760.0 759.0 761.9 762.6 760.9 762.4 762.2 765.2 766.5 762.6 760.7 766.5 DAY 21 8 8 10 24 26 10 7 23 27 28 18 MIN. QFE PRESSURE IN HPA 746.0 747.6 744.4 755.1 755.4 753.2 755.1 753.8 755.4 757.2 755.3 751.5 744.4 DAY 17 1 29 29 31 10 5 1 13 1 24 5 MEAN QNH PRESSURE IN HPA 1016.2 1019.1 1017.3 1024.0 1024.3 1022.9 1024.6 1024.7 1025.1 1028.2 1025.0 1020.1 1022.6 MAX. QNH PRESSURE IN HPA 1024.1 1025.6 1024.3 1028.0 1028.9 1026.8 1028.7 1028.4 1032.2 1033.9 1028.9 1026.5 1033.9 DAY 21 8 8 10 24 26 10 7 23 27 28 18 MIN. QNH PRESSURE IN HPA 1007.8 1009.8 1005.7 1019.4 1019.8 1016.9 1019.4 1017.7 1019.8 1022.0 1019.6 1014.8 1005.7 DAY 17 1 29 29 31 10 5 1 13 1 24 5 MEAN QFF PRESSURE IN HPA 1024.7 1026.5 1015.6 1015.4 1010.9 1002.4 1001.5 1003.2 1008.5 1016.8 1021.5 1021.0 1014.0 MAX. QFF PRESSURE IN HPA 1034.7 1037.3 1023.4 1021.8 1018.5 1006.9 1005.8 1008.6 1022.8 1025.1 1027.1 1027.9 1037.3 DAY 27 4 31 2 1 2 29 20 23 24 22 18 MIN. QFF PRESSURE IN HPA 1016.4 1013.9 1004.6 1009.9 999.4 997.3 995.8 996.4 1000.0 1009.2 1016.4 1014.0 995.8 DAY 12 23 28 28 31 30 6 1 11 1 16 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 753.0 755.2 754.0 759.5 759.7 758.4 759.9 759.9 760.0 762.5 759.8 756.0 758.2 MAX. QFE PRESSURE IN HPA 760.2 760.0 759.2 762.6 763.0 761.6 763.2 762.5 765.6 766.5 763.5 761.3 766.5 DAY 21 8 7 10 24 25 19 19 23 27 28 18 MIN. QFE PRESSURE IN HPA 746.4 748.6 744.4 755.4 756.0 753.8 755.9 754.1 755.9 757.3 754.9 751.5 744.4 DAY 17 22 29 29 31 10 5 1 12 1 24 4 MEAN QNH PRESSURE IN HPA 1016.7 1019.4 1017.9 1025.0 1025.2 1023.6 1025.5 1025.5 1025.6 1028.8 1025.4 1020.5 1023.3 MAX. QNH PRESSURE IN HPA 1025.9 1025.6 1024.6 1028.9 1029.4 1027.7 1029.7 1028.8 1032.8 1033.9 1030.1 1027.3 1033.9 DAY 21 8 7 10 24 25 19 19 23 27 28 18 MIN. QNH PRESSURE IN HPA 1008.3 1011.1 1005.7 1019.8 1020.5 1017.7 1020.4 1018.1 1020.4 1022.2 1019.1 1014.8 1005.7 DAY 17 22 29 29 31 10 5 1 12 1 24 4 MEAN QFF PRESSURE IN HPA 1024.2 1025.5 1015.4 1015.5 1011.6 1003.2 1002.5 1003.6 1008.2 1015.9 1020.5 1020.4 1013.9 MAX. QFF PRESSURE IN HPA 1033.9 1037.3 1022.1 1021.7 1020.1 1008.1 1007.2 1010.3 1023.0 1025.6 1025.3 1028.9 1037.3 DAY 30 3 7 2 1 2 21 19 23 24 8 18 MIN. QFF PRESSURE IN HPA 1016.4 1010.8 1004.1 1009.3 999.8 997.0 996.9 996.7 999.9 1006.2 1015.1 1012.8 996.7 DAY 11 22 29 28 31 30 14 1 12 1 15 4 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 752.7 754.9 753.7 759.3 759.4 758.3 759.8 759.8 760.0 762.4 759.7 755.7 758.0 MAX. QFE PRESSURE IN HPA 760.4 760.1 759.2 762.8 762.6 761.5 763.2 762.0 765.6 766.2 764.0 760.2 766.2 DAY 21 7 7 8 24 26 19 7 23 26 28 18 MIN. QFE PRESSURE IN HPA 746.3 747.9 743.5 755.0 755.4 753.8 755.9 754.2 755.9 757.3 754.6 750.6 743.5 DAY 17 22 29 29 31 10 5 1 12 1 24 4 MEAN QNH PRESSURE IN HPA 1016.3 1019.1 1017.6 1024.8 1024.9 1023.5 1025.3 1025.4 1025.6 1028.6 1025.2 1020.1 1023.0 MAX. QNH PRESSURE IN HPA 1026.1 1025.7 1024.6 1029.2 1028.9 1027.5 1029.7 1028.2 1032.8 1033.5 1030.7 1025.9 1033.5 DAY 21 7 7 8 24 26 19 7 23 26 28 18 MIN. QNH PRESSURE IN HPA 1008.1 1010.2 1004.6 1019.2 1019.8 1017.7 1020.4 1018.2 1020.4 1022.2 1018.7 1013.6 1004.6 DAY 17 22 29 29 31 10 5 1 12 1 24 4 MEAN QFF PRESSURE IN HPA 1022.5 1023.9 1014.9 1014.8 1010.8 1002.5 1001.9 1003.0 1007.4 1015.1 1019.5 1019.2 1013.0 MAX. QFF PRESSURE IN HPA 1032.6 1036.0 1021.5 1021.2 1018.2 1006.8 1006.8 1008.4 1023.1 1024.5 1024.8 1026.0 1036.0 DAY 30 3 12 2 8 2 19 19 22 24 7 18 MIN. QFF PRESSURE IN HPA 1011.8 1009.4 1002.3 1006.7 998.8 996.6 996.7 995.7 999.4 1006.0 1013.8 1011.5 995.7 DAY 11 22 15 28 31 30 6 1 12 1 15 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -6.3 -4.2 0.1 6.2 14.2 19.6 20.6 21.2 18.4 9.2 5.5 -1.0 8.6 MINIMUN AIR TEMPERATURE (C) -9.3 -7.9 -3.5 1.7 9.1 14.1 15.9 16.0 13.5 5.3 2.1 -4.1 4.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 31 27 10 2 0 0 0 0 0 0 0 17 87 DAYS WITH FREEZING MIN.<= 0 31 28 25 13 0 0 0 0 0 0 10 23 130 TEMPERATURE RECORDS LOWEST(C) -16.0 -12.2 -14.0 -4.6 3.0 10.0 11.8 11.6 10.6 0.6 -3.0 -15.5 -16.0 DAY 12 25 21 9 14 1 5 30 3 19 14 27 MAXIMUM AIR TEMPERATURE (C) -2.7 -0.1 4.0 10.5 18.8 24.2 25.4 26.5 23.8 13.8 9.8 3.5 13.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MAXIMUM TEMP. <= 0 28 16 5 0 0 0 0 0 0 0 0 9 58 TEMPERATURE RECORDS HIGHEST(C) 1.6 4.2 9.2 19.6 24.2 28.2 28.5 29.0 27.5 20.2 15.5 11.0 29.0 DAY 22 17 12 27 25 29 30 5 14 1 5 3 DIF. BETWEEN (MAX.-MIN.) (C) 6.6 7.8 7.5 8.8 9.7 10.1 9.5 10.5 10.3 8.5 7.7 7.6 8.7 MEAN DAILY TEMP. (MDT) (C) -6.0 -4.0 0.2 6.1 13.9 19.2 20.7 21.2 18.7 9.6 5.9 -0.3 8.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 5.0 23.1 28.0 1.3 0.0 0.0 0.0 57.5 HEATING DEG. DAYS(BASE 18 0C) 743.9 617.1 550.4 357.3 126.9 11.2 4.9 1.4 11.1 261.4 362.1 521.7 3569.5 DEWPOINT (MEAN C) -11.3 -8.9 -7.2 -6.1 -3.6 -3.2 3.3 2.2 -4.8 -3.2 -5.4 -9.5 -4.8 MIXING RATIO (G/KG) 2.30 2.71 3.09 3.35 4.06 4.20 6.53 6.11 3.78 4.12 3.47 2.63 3.86 VAPOUR PRESSURE (HPA) 2.78 3.26 3.74 4.05 4.91 5.08 7.87 7.39 4.59 5.01 4.22 3.19 4.67 SATURATION DEF. (HPA) 1.12 1.32 2.67 5.91 11.74 18.16 16.89 18.46 17.15 6.99 5.07 2.85 9.03 RELATIVE HUMIDITY (MEAN %) 71 72 61 46 33 23 34 31 23 45 48 56 45 RELATIVE HUMIDITY (MAX. %) 84 85 76 65 48 34 46 44 36 64 63 70 60 RELATIVE HUMIDITY (MIN. %) 58 59 44 29 22 16 24 20 14 31 33 42 33 RELATIVE HUMIDITY (MEAN% 03UTC) 67 73 62 57 41 29 42 37 28 52 53 60 50 RELATIVE HUMIDITY (MEAN% 09UTC) 68 71 54 39 27 19 28 24 16 36 34 50 39 RELATIVE HUMIDITY (MEAN% 15UTC) 79 75 64 38 27 18 30 24 23 45 55 61 45 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 58.2 77.3 35.6 56.0 8.8 0.0 1.3 0.0 0.0 24.8 24.6 60.5 347.1 DAYS WITH PRECIPITATION >=10 2 3 1 2 0 0 0 0 0 0 1 3 12 DAYS WITH PRECIPITATION >= 5 4 4 1 5 1 0 0 0 0 1 2 4 22 DAYS WITH PRECIPITATION >= 1 11 10 7 6 2 0 1 0 0 6 3 6 52 DAYS WITH PRECIPITATION 16 14 15 12 3 1 8 0 0 7 3 7 86 GREATEST DAILY PRECIPITATION 12.0 27.0 16.0 22.6 6.0 0.0 1.1 0.0 0.0 9.0 16.6 19.0 27.0 DAY 10 10 14 2 12 ** 6 ** ** 28 12 25 DAY WITH THUNDER STORM 0 0 1 1 1 0 2 0 0 1 0 0 6 DAYS WITH SNOW OR SLEET 16 15 11 7 0 0 0 0 0 0 1 10 60 DAYS WITH DUST 0 0 0 2 1 1 0 0 0 5 0 0 9 WIND DIRECTION (PREVAILING) 45 45 45 225 270 270 270 270 270 270 225 225 270 PREVAILING WIND SPEED(KNOTS) 22.7 6.0 22.3 9.5 9.8 7.6 7.0 6.8 6.9 8.8 5.9 6.2 8.5 PREVAILING WIND PERCENT 9.7 5.8 12.1 20.8 28.2 18.3 14.9 14.5 17.1 17.7 15.8 11.3 14.1 CALMS PERCENT OF WIND 74.6 78.6 59.3 52.1 48.4 45.8 46.4 54.4 50.0 53.6 68.3 71.4 58.5 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 14 345 3 253 261 273 4 251 259 281 253 342 287 VECTOR WIND MAGNITUDE(KNOTS) 1.9 0.4 2.3 3.6 3.7 1.2 1.1 0.9 1.5 1.9 1.4 0.7 1.2 WIND STEADINESES (MEAN %) 54.3 26.7 43.4 81.8 72.5 27.9 23.9 33.3 46.9 44.2 66.7 25.9 33.3 WIND SPEED (MEAN KNOTS) 3.5 1.5 5.3 4.4 5.1 4.3 4.6 2.7 3.2 4.3 2.1 2.7 3.6 FASTEST WIND DIRECTION 30 30 30 250 270 30 20 260 280 10 300 40 30 FASTEST WIND SPEED (KNOTS) 35 29 39 29 29 23 35 12 16 35 17 29 39 DAY 25 26 19 19 12 7 4 1 1 15 11 25 DAYS WITH SKY CLEAR (0-2)/8 8 8 9 14 22 26 12 27 29 21 20 15 211 DAYS WITH P.CLOUDY (3-6)/8 7 10 14 9 8 4 19 4 1 9 8 9 102 DAYS WITH CLOUDY (7-8)/8 16 10 8 7 1 0 0 0 0 1 2 7 52 DAYS WITH VISIBILITY =< 2 KM 16 13 10 3 2 0 0 0 0 0 1 7 52 DURATION OF SUNSHINE HOURS 120.0 139.9 198.6 240.6 330.3 342.0 271.6 344.2 320.9 262.3 238.3 183.3 2992.0 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 754.0 752.2 757.2 755.5 758.5 758.3 758.7 759.7 760.8 761.6 761.2 757.0 757.9 MAX. QFE PRESSURE IN HPA 760.6 759.3 765.1 762.4 763.0 763.3 763.2 763.4 764.5 767.0 767.9 764.0 767.9 DAY-HOUR 20- 6 8- 6 10- 6 25- 6 16- 6 5- 6 15- 6 4- 6 16- 6 19- 6 23- 6 4- 6 MIN. QFE PRESSURE IN HPA 747.5 742.7 751.7 748.2 748.1 753.8 753.2 755.9 757.6 754.7 753.7 746.3 742.7 DAY-HOUR 17-12 16- 0 14-15 16- 0 13- 3 27-15 4-15 8-15 4-12 31-21 1- 0 25- 3 MEAN QNH PRESSURE IN HPA 1017.9 1015.7 1022.0 1019.9 1023.7 1023.4 1024.0 1025.2 1026.7 1027.7 1027.1 1021.7 1022.9 MAX. QNH PRESSURE IN HPA 1026.4 1024.7 1032.1 1028.7 1029.4 1029.8 1029.7 1030.0 1031.4 1034.5 1035.7 1030.7 1035.7 DAY-HOUR 20- 6 8- 6 10- 6 25- 6 16- 6 5- 6 15- 6 4- 6 16- 6 19- 6 23- 6 4- 6 MIN. QNH PRESSURE IN HPA 1009.7 1003.5 1015.0 1010.6 1010.4 1017.7 1016.9 1020.4 1022.6 1018.9 1017.6 1008.1 1003.5 DAY-HOUR 17-12 16- 0 14-15 16- 0 13- 3 27-15 4-15 8-15 4-12 31-21 1- 0 25- 3 MEAN QFF PRESSURE IN HPA 1023.6 1018.8 1020.7 1012.1 1007.9 1002.4 1001.6 1002.4 1006.9 1016.8 1020.3 1021.7 1012.9 MAX. QFF PRESSURE IN HPA 1036.3 1032.4 1034.9 1020.9 1018.8 1013.3 1006.7 1008.9 1013.3 1030.0 1031.5 1035.2 1036.3 DAY-HOUR 12- 6 8-15 20-18 8- 6 15- 6 1- 6 9- 3 29- 6 28- 3 19- 6 22-15 28- 0 MIN. QFF PRESSURE IN HPA 1013.1 1005.0 1009.0 1000.1 994.9 993.1 995.4 996.4 1001.4 1005.7 1008.3 1011.8 993.1 DAY-HOUR 23- 3 15-21 25- 0 15-18 12-21 27-12 2-12 8-12 13-21 1-12 1- 0 25- 3 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 753.6 751.8 756.8 755.0 758.2 758.1 758.4 759.4 760.5 761.3 760.8 756.8 757.6 MAX. QFE PRESSURE IN HPA 759.9 758.2 763.8 761.4 762.4 762.0 762.8 762.3 763.5 766.5 767.0 763.5 767.0 DAY 20 8 10 25 16 1 17 4 24 16 23 6 MIN. QFE PRESSURE IN HPA 747.7 742.7 751.9 748.2 748.2 753.9 753.4 756.5 757.9 758.0 753.7 747.6 742.7 DAY 18 16 25 16 13 27 5 9 4 14 1 25 MEAN QNH PRESSURE IN HPA 1017.5 1015.2 1021.5 1019.3 1023.3 1023.2 1023.5 1024.9 1026.3 1027.3 1026.7 1021.5 1022.5 MAX. QNH PRESSURE IN HPA 1025.5 1023.3 1030.5 1027.4 1028.7 1028.2 1029.2 1028.5 1030.1 1033.9 1034.5 1030.1 1034.5 DAY 20 8 10 25 16 1 17 4 24 16 23 6 MIN. QNH PRESSURE IN HPA 1009.9 1003.5 1015.3 1010.6 1010.6 1017.8 1017.2 1021.2 1022.9 1023.1 1017.6 1009.8 1003.5 DAY 18 16 25 16 13 27 5 9 4 14 1 25 MEAN QFF PRESSURE IN HPA 1022.7 1018.1 1020.2 1011.3 1007.3 1002.3 1001.0 1001.7 1006.1 1015.8 1019.3 1021.0 1012.2 MAX. QFF PRESSURE IN HPA 1032.9 1030.3 1033.7 1017.6 1015.6 1012.1 1005.1 1006.1 1011.3 1027.0 1028.8 1035.2 1035.2 DAY 26 8 21 9 16 1 17 30 24 19 23 28 MIN. QFF PRESSURE IN HPA 1014.2 1005.1 1009.0 1002.5 995.8 993.8 995.7 996.7 1001.5 1006.1 1008.3 1013.1 993.8 DAY 23 16 25 30 13 27 4 20 2 1 1 25 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 753.5 751.8 756.9 755.4 758.4 758.4 758.8 759.9 760.9 761.5 761.0 756.7 757.8 MAX. QFE PRESSURE IN HPA 759.6 758.2 764.1 762.0 762.4 762.8 762.6 762.8 763.8 766.3 767.2 763.2 767.2 DAY 20 8 10 25 16 5 16 4 23 16 23 6 MIN. QFE PRESSURE IN HPA 747.9 742.8 752.0 748.7 748.1 753.9 754.2 757.0 758.1 757.5 754.0 746.3 742.8 DAY 18 16 25 16 13 27 5 9 4 14 1 25 MEAN QNH PRESSURE IN HPA 1017.4 1015.2 1021.7 1019.7 1023.6 1023.6 1024.1 1025.4 1026.8 1027.6 1026.8 1021.4 1022.8 MAX. QNH PRESSURE IN HPA 1025.1 1023.3 1030.8 1028.2 1028.7 1029.2 1028.9 1029.2 1030.5 1033.7 1034.8 1029.7 1034.8 DAY 20 8 10 25 16 5 16 4 23 16 23 6 MIN. QNH PRESSURE IN HPA 1010.2 1003.7 1015.4 1011.2 1010.4 1017.8 1018.2 1021.8 1023.2 1022.4 1018.0 1008.1 1003.7 DAY 18 16 25 16 13 27 5 9 4 14 1 25 MEAN QFF PRESSURE IN HPA 1023.7 1019.2 1021.2 1012.6 1007.8 1002.7 1002.0 1003.0 1008.1 1017.9 1021.5 1022.4 1013.5 MAX. QFF PRESSURE IN HPA 1034.6 1032.0 1031.5 1018.4 1016.7 1012.0 1006.7 1007.6 1013.3 1029.1 1031.2 1034.5 1034.6 DAY 26 8 10 3 15 1 9 29 28 19 23 28 MIN. QFF PRESSURE IN HPA 1013.1 1005.3 1010.8 1003.6 999.0 993.6 997.0 997.1 1003.3 1007.7 1009.3 1011.8 993.6 DAY 23 16 25 16 12 27 4 10 11 1 1 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 754.6 752.8 757.8 756.1 759.1 759.0 759.3 760.4 761.7 762.3 761.9 757.7 758.6 MAX. QFE PRESSURE IN HPA 760.6 759.3 765.1 762.4 763.0 763.3 763.2 763.4 764.5 767.0 767.9 764.0 767.9 DAY 20 8 10 25 16 5 15 4 16 19 23 4 MIN. QFE PRESSURE IN HPA 749.5 745.3 753.3 749.1 748.1 754.2 754.8 757.6 758.9 757.2 755.6 747.7 745.3 DAY 18 16 25 16 13 27 4 9 4 14 1 25 MEAN QNH PRESSURE IN HPA 1018.8 1016.4 1022.9 1020.6 1024.4 1024.3 1024.7 1026.2 1027.7 1028.6 1028.1 1022.7 1023.8 MAX. QNH PRESSURE IN HPA 1026.4 1024.7 1032.1 1028.7 1029.4 1029.8 1029.7 1030.0 1031.4 1034.5 1035.7 1030.7 1035.7 DAY 20 8 10 25 16 5 15 4 16 19 23 4 MIN. QNH PRESSURE IN HPA 1012.2 1006.9 1017.1 1011.7 1010.4 1018.2 1019.0 1022.6 1024.2 1022.0 1020.0 1009.9 1006.9 DAY 18 16 25 16 13 27 4 9 4 14 1 25 MEAN QFF PRESSURE IN HPA 1024.8 1019.7 1021.4 1013.0 1008.8 1003.5 1002.6 1003.5 1007.7 1017.6 1021.0 1022.4 1013.8 MAX. QFF PRESSURE IN HPA 1036.3 1031.8 1033.0 1020.9 1018.8 1013.3 1006.6 1008.9 1012.6 1030.0 1030.2 1034.9 1036.3 DAY 12 8 21 8 15 1 9 29 25 19 14 28 MIN. QFF PRESSURE IN HPA 1016.7 1007.4 1013.6 1002.2 999.1 994.2 996.4 998.8 1003.1 1008.3 1011.2 1013.6 994.2 DAY 5 16 25 16 13 27 2 20 11 1 1 25 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 754.2 752.6 757.5 755.8 758.9 758.6 758.9 760.0 761.3 761.8 761.3 757.1 758.2 MAX. QFE PRESSURE IN HPA 759.9 759.1 764.7 762.2 763.0 762.4 762.9 763.0 764.5 766.3 767.3 763.4 767.3 DAY 20 8 10 25 16 5 15 4 16 19 22 4 MIN. QFE PRESSURE IN HPA 748.5 745.8 753.8 748.8 748.7 754.2 754.3 757.3 758.4 756.6 755.3 746.7 745.8 DAY 17 10 19 16 13 27 5 8 4 14 1 25 MEAN QNH PRESSURE IN HPA 1018.3 1016.1 1022.5 1020.2 1024.2 1023.9 1024.3 1025.7 1027.2 1027.9 1027.2 1021.9 1023.3 MAX. QNH PRESSURE IN HPA 1025.5 1024.5 1031.6 1028.4 1029.4 1028.7 1029.3 1029.4 1031.4 1033.7 1034.9 1030.0 1034.9 DAY 20 8 10 25 16 5 15 4 16 19 22 4 MIN. QNH PRESSURE IN HPA 1011.0 1007.5 1017.7 1011.3 1011.2 1018.2 1018.3 1022.2 1023.6 1021.3 1019.6 1008.7 1007.5 DAY 17 10 19 16 13 27 5 8 4 14 1 25 MEAN QFF PRESSURE IN HPA 1023.1 1018.7 1020.7 1012.2 1008.2 1002.7 1001.7 1002.6 1006.9 1016.3 1019.5 1021.2 1012.8 MAX. QFF PRESSURE IN HPA 1034.7 1031.4 1032.4 1020.9 1018.3 1011.3 1006.0 1007.3 1011.9 1027.2 1030.1 1034.2 1034.7 DAY 12 8 20 8 15 1 15 2 25 19 14 28 MIN. QFF PRESSURE IN HPA 1015.2 1007.9 1013.6 1002.0 996.1 993.1 996.5 997.4 1003.0 1006.5 1009.6 1012.2 993.1 DAY 23 16 14 16 12 27 2 20 11 1 1 25 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 753.6 751.9 756.7 755.1 758.1 757.9 758.3 759.3 760.3 761.2 760.7 756.5 757.5 MAX. QFE PRESSURE IN HPA 759.7 757.7 763.0 761.3 762.2 761.4 762.3 761.8 763.3 765.7 767.1 763.0 767.1 DAY 26 8 10 25 16 4 15 3 24 19 23 5 MIN. QFE PRESSURE IN HPA 747.5 745.6 752.7 748.6 748.9 754.0 753.5 756.4 757.6 756.6 755.0 746.4 745.6 DAY 17 10 14 16 13 27 4 8 4 14 1 25 MEAN QNH PRESSURE IN HPA 1017.4 1015.2 1021.5 1019.3 1023.2 1023.0 1023.4 1024.7 1026.1 1027.1 1026.6 1021.2 1022.4 MAX. QNH PRESSURE IN HPA 1025.2 1022.7 1029.4 1027.3 1028.4 1027.4 1028.5 1027.9 1029.8 1032.9 1034.7 1029.4 1034.7 DAY 26 8 10 25 16 4 15 3 24 19 23 5 MIN. QNH PRESSURE IN HPA 1009.7 1007.2 1016.3 1011.1 1011.5 1018.0 1017.3 1021.0 1022.6 1021.3 1019.2 1008.3 1007.2 DAY 17 10 14 16 13 27 4 8 4 14 1 25 MEAN QFF PRESSURE IN HPA 1022.6 1017.9 1019.9 1011.2 1007.2 1002.0 1000.8 1001.6 1005.9 1015.8 1019.3 1020.7 1012.1 MAX. QFF PRESSURE IN HPA 1033.9 1029.7 1031.2 1019.4 1016.3 1009.6 1004.8 1007.1 1011.3 1026.5 1028.9 1033.7 1033.9 DAY 12 8 21 8 15 1 15 2 24 19 14 28 MIN. QFF PRESSURE IN HPA 1015.6 1009.2 1010.4 1000.3 996.1 993.1 995.4 996.4 1001.5 1005.7 1010.4 1012.2 993.1 DAY 23 15 14 29 12 27 2 8 11 1 1 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 753.9 752.1 756.9 755.1 758.2 757.6 758.2 759.0 760.3 761.4 761.2 757.0 757.6 MAX. QFE PRESSURE IN HPA 759.5 757.8 762.7 761.1 762.2 761.9 762.1 761.8 763.3 766.2 767.6 763.7 767.6 DAY 26 7 9 24 16 4 16 4 24 18 22 5 MIN. QFE PRESSURE IN HPA 747.5 745.0 751.7 748.4 750.3 753.8 753.2 755.9 757.9 756.4 755.5 746.9 745.0 DAY 17 15 14 15 13 27 4 8 3 31 1 25 MEAN QNH PRESSURE IN HPA 1017.9 1015.6 1021.6 1019.3 1023.3 1022.6 1023.3 1024.4 1026.0 1027.5 1027.1 1021.7 1022.5 MAX. QNH PRESSURE IN HPA 1025.0 1022.8 1029.1 1027.0 1028.4 1028.0 1028.3 1027.9 1029.8 1033.5 1035.3 1030.3 1035.3 DAY 26 7 9 24 16 4 16 4 24 18 22 5 MIN. QNH PRESSURE IN HPA 1009.7 1006.5 1015.0 1010.8 1013.2 1017.7 1016.9 1020.4 1022.9 1021.0 1019.9 1008.9 1006.5 DAY 17 15 14 15 13 27 4 8 3 31 1 25 MEAN QFF PRESSURE IN HPA 1024.3 1019.5 1021.0 1012.0 1007.6 1001.6 1001.3 1001.9 1007.2 1018.0 1021.7 1022.8 1013.2 MAX. QFF PRESSURE IN HPA 1035.2 1032.4 1032.4 1020.0 1016.3 1008.8 1004.7 1007.6 1013.2 1028.7 1031.5 1034.9 1035.2 DAY 26 8 20 8 15 1 16 29 24 19 22 28 MIN. QFF PRESSURE IN HPA 1015.6 1006.5 1010.1 1000.9 1001.7 993.7 996.5 997.2 1002.2 1007.6 1011.1 1013.0 993.7 DAY 4 15 14 15 11 27 2 20 12 1 1 25 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 754.4 752.4 757.5 755.9 758.9 758.2 759.0 759.9 760.9 761.8 761.5 757.2 758.1 MAX. QFE PRESSURE IN HPA 760.4 758.3 763.9 762.2 762.7 762.7 763.0 763.0 763.9 766.8 767.6 764.0 767.6 DAY 26 7 9 24 31 4 16 4 27 18 22 5 MIN. QFE PRESSURE IN HPA 747.7 744.1 752.3 748.4 751.2 754.3 754.4 756.8 758.5 755.8 756.4 747.3 744.1 DAY 17 15 14 15 12 26 4 8 10 31 1 25 MEAN QNH PRESSURE IN HPA 1018.4 1016.0 1022.4 1020.4 1024.2 1023.4 1024.4 1025.4 1026.8 1028.0 1027.5 1022.0 1023.2 MAX. QNH PRESSURE IN HPA 1026.1 1023.5 1030.6 1028.4 1029.1 1029.1 1029.4 1029.4 1030.6 1034.3 1035.3 1030.7 1035.3 DAY 26 7 9 24 31 4 16 4 27 18 22 5 MIN. QNH PRESSURE IN HPA 1009.9 1005.3 1015.8 1010.8 1014.4 1018.3 1018.5 1021.5 1023.7 1020.3 1021.0 1009.4 1005.3 DAY 17 15 14 15 12 26 4 8 10 31 1 25 MEAN QFF PRESSURE IN HPA 1024.5 1019.2 1020.9 1012.6 1008.6 1002.5 1002.2 1002.7 1006.8 1017.1 1020.4 1021.8 1013.3 MAX. QFF PRESSURE IN HPA 1035.4 1029.9 1034.9 1020.0 1017.3 1010.3 1005.5 1007.2 1011.8 1028.3 1029.7 1035.0 1035.4 DAY 26 8 20 8 15 1 8 2 27 18 22 27 MIN. QFF PRESSURE IN HPA 1016.2 1006.3 1010.7 1000.1 998.8 994.8 997.6 997.8 1002.5 1007.9 1012.2 1014.3 994.8 DAY 4 15 24 15 12 27 29 7 1 1 1 18 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 754.1 752.2 757.3 755.7 758.7 758.2 758.9 759.7 760.9 761.5 761.3 757.0 758.0 MAX. QFE PRESSURE IN HPA 760.5 758.3 764.2 761.8 762.7 762.6 762.8 762.8 763.8 766.6 767.5 763.7 767.5 DAY 19 7 9 24 31 4 16 4 27 15 22 5 MIN. QFE PRESSURE IN HPA 747.5 743.2 752.4 748.4 750.0 754.3 754.6 756.6 758.2 754.7 756.1 748.2 743.2 DAY 17 15 14 15 12 26 4 8 18 31 1 25 MEAN QNH PRESSURE IN HPA 1018.1 1015.7 1022.2 1020.2 1024.0 1023.4 1024.2 1025.3 1026.7 1027.6 1027.3 1021.7 1023.0 MAX. QNH PRESSURE IN HPA 1026.3 1023.5 1031.0 1027.9 1029.1 1028.9 1029.2 1029.2 1030.5 1034.0 1035.2 1030.3 1035.2 DAY 19 7 9 24 31 4 16 4 27 15 22 5 MIN. QNH PRESSURE IN HPA 1009.7 1004.2 1015.9 1010.8 1012.9 1018.3 1018.7 1021.3 1023.3 1018.9 1020.6 1010.6 1004.2 DAY 17 15 14 15 12 26 4 8 18 31 1 25 MEAN QFF PRESSURE IN HPA 1023.0 1018.2 1020.4 1011.9 1008.0 1002.1 1001.6 1002.1 1006.4 1016.1 1019.6 1021.2 1012.6 MAX. QFF PRESSURE IN HPA 1032.5 1029.7 1034.4 1018.5 1016.3 1010.2 1005.4 1006.6 1011.7 1027.2 1029.3 1035.0 1035.0 DAY 19 8 20 8 15 1 19 2 27 18 22 27 MIN. QFF PRESSURE IN HPA 1014.4 1005.0 1010.2 1000.4 994.9 993.9 997.2 997.0 1001.4 1007.1 1010.7 1013.7 993.9 DAY 4 15 24 15 12 26 3 7 13 1 1 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -3.8 -5.1 0.2 7.6 10.4 17.0 20.6 20.7 16.2 9.2 3.3 -3.0 7.8 MINIMUN AIR TEMPERATURE (C) -7.1 -8.8 -2.7 3.4 6.1 11.7 15.7 15.6 11.7 5.5 0.0 -5.9 3.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 31 24 11 1 0 0 0 0 0 0 3 21 91 DAYS WITH FREEZING MIN.<= 0 31 28 23 7 2 0 0 0 0 1 18 31 141 TEMPERATURE RECORDS LOWEST(C) -11.5 -17.5 -12.5 -4.0 -1.0 8.5 12.0 12.0 3.4 -1.0 -6.0 -12.6 -17.5 DAY 27 13 11 14 7 8 17 27 27 13 27 17 MAXIMUM AIR TEMPERATURE (C) -0.1 -0.5 3.3 11.7 14.8 21.7 25.6 25.8 21.2 13.4 7.2 0.9 12.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 0 1 0 0 0 0 1 DAYS WITH MAXIMUM TEMP. <= 0 18 15 7 0 0 0 0 0 0 0 0 8 48 TEMPERATURE RECORDS HIGHEST(C) 4.0 5.6 10.2 18.8 20.2 26.6 28.5 30.0 27.0 16.0 14.5 5.0 30.0 DAY 7 18 30 25 30 29 29 6 8 27 3 24 DIF. BETWEEN (MAX.-MIN.) (C) 7.0 8.3 6.0 8.3 8.7 10.0 9.9 10.2 9.5 7.9 7.2 6.8 8.3 MEAN DAILY TEMP. (MDT) (C) -3.6 -4.7 0.3 7.5 10.4 16.7 20.6 20.7 16.4 9.5 3.6 -2.5 7.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.0 18.1 17.2 1.4 0.0 0.0 0.0 36.7 HEATING DEG. DAYS(BASE 18 0C) 670.5 634.6 547.7 314.1 234.5 49.4 3.0 1.3 72.3 264.3 431.2 635.3 3858.3 DEWPOINT (MEAN C) -8.4 -10.4 -3.5 -2.9 -0.7 1.6 4.0 1.4 -0.6 -0.5 -4.3 -8.4 -2.7 MIXING RATIO (G/KG) 2.79 2.49 4.10 4.26 5.03 5.89 6.92 5.79 5.13 4.98 3.75 2.93 4.51 VAPOUR PRESSURE (HPA) 3.37 3.00 4.94 5.15 6.06 7.11 8.34 6.99 6.22 6.05 4.55 3.54 5.45 SATURATION DEF. (HPA) 1.34 1.43 1.43 5.79 6.99 12.65 16.50 17.94 13.01 5.75 3.44 1.47 7.31 RELATIVE HUMIDITY (MEAN %) 72 69 78 52 50 38 36 30 36 54 61 69 54 RELATIVE HUMIDITY (MAX. %) 87 83 88 66 68 51 47 42 49 68 77 86 68 RELATIVE HUMIDITY (MIN. %) 57 53 65 37 36 27 26 21 27 42 45 52 41 RELATIVE HUMIDITY (MEAN% 03UTC) 73 69 76 56 58 45 42 35 41 61 65 66 57 RELATIVE HUMIDITY (MEAN% 09UTC) 65 60 78 47 45 33 29 24 33 46 50 66 48 RELATIVE HUMIDITY (MEAN% 15UTC) 77 75 84 48 44 31 31 25 34 52 64 75 53 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 40.4 41.1 110.9 65.8 31.0 3.4 0.0 0.0 0.7 14.6 4.0 127.3 439.2 DAYS WITH PRECIPITATION >=10 0 0 3 2 0 0 0 0 0 0 0 3 8 DAYS WITH PRECIPITATION >= 5 3 2 7 3 3 0 0 0 0 0 0 7 25 DAYS WITH PRECIPITATION >= 1 12 11 14 5 7 1 0 0 0 5 1 12 68 DAYS WITH PRECIPITATION 16 15 17 11 12 3 0 0 1 10 8 17 110 GREATEST DAILY PRECIPITATION 9.0 6.2 28.0 38.3 7.0 2.0 0.0 0.0 0.7 4.0 1.8 47.0 47.0 DAY 14 21 6 4 24 18 ** ** 26 18 11 12 DAY WITH THUNDER STORM 1 0 2 1 5 2 0 0 0 5 0 1 17 DAYS WITH SNOW OR SLEET 16 16 13 6 2 0 0 0 0 0 5 17 75 DAYS WITH DUST 0 1 3 3 8 0 0 0 0 3 3 0 21 WIND DIRECTION (PREVAILING) 225 270 90 270 270 225 45 225 225 270 225 270 270 PREVAILING WIND SPEED(KNOTS) 6.8 6.5 7.1 9.4 10.3 6.9 12.2 7.8 8.2 8.1 7.2 9.3 8.7 PREVAILING WIND PERCENT 8.5 6.7 6.0 22.9 19.0 14.6 12.9 14.1 17.9 12.5 12.1 9.3 11.6 CALMS PERCENT OF WIND 79.0 78.1 75.8 54.2 54.0 46.3 57.7 70.6 62.5 73.8 70.8 81.0 67.0 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 285 3 14 273 270 333 349 263 259 253 265 331 286 VECTOR WIND MAGNITUDE(KNOTS) 0.5 0.6 0.9 2.4 2.9 1.3 1.1 1.3 1.8 1.7 1.1 0.8 1.1 WIND STEADINESES (MEAN %) 27.8 35.3 37.5 55.8 58.0 28.3 27.5 50.0 50.0 81.0 45.8 38.1 36.7 WIND SPEED (MEAN KNOTS) 1.8 1.7 2.4 4.3 5.0 4.6 4.0 2.6 3.6 2.1 2.4 2.1 3.0 FASTEST WIND DIRECTION 50 30 20 30 240 30 30 10 30 220 30 30 30 FASTEST WIND SPEED (KNOTS) 29 23 27 25 29 27 35 19 29 16 23 29 35 DAY 5 22 15 1 3 18 4 12 26 11 11 16 DAYS WITH SKY CLEAR (0-2)/8 11 9 1 10 12 22 22 31 28 16 12 15 189 DAYS WITH P.CLOUDY (3-6)/8 14 7 14 12 12 8 9 0 2 12 16 7 113 DAYS WITH CLOUDY (7-8)/8 6 12 16 8 7 0 0 0 0 3 2 9 63 DAYS WITH VISIBILITY =< 2 KM 5 7 14 2 2 0 0 0 0 1 1 8 40 DURATION OF SUNSHINE HOURS 151.0 129.6 98.6 212.5 261.1 332.4 317.5 351.0 314.0 210.4 175.8 130.8 2684.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 754.8 754.5 754.5 757.7 756.1 758.5 758.0 759.4 761.7 762.1 760.4 754.7 757.7 MAX. QFE PRESSURE IN HPA 761.8 763.5 763.7 762.4 760.6 763.8 761.7 763.4 765.1 765.9 763.6 761.7 765.9 DAY-HOUR 12- 6 15- 9 29-12 24- 6 8-18 23- 6 1- 6 31-18 17- 6 20- 6 13- 6 7- 6 MIN. QFE PRESSURE IN HPA 746.0 748.4 743.6 748.8 747.7 751.8 752.0 754.2 757.5 758.5 756.6 746.4 743.6 DAY-HOUR 26- 0 8- 3 7- 0 4-21 23- 3 12- 0 14- 0 12- 0 19-15 4-12 6-12 25-18 MEAN QNH PRESSURE IN HPA 1018.9 1018.6 1018.6 1022.7 1020.6 1023.7 1023.0 1024.9 1027.8 1028.4 1026.1 1018.9 1022.7 MAX. QNH PRESSURE IN HPA 1027.9 1030.1 1030.3 1028.7 1026.4 1030.5 1027.8 1030.0 1032.1 1033.1 1030.2 1027.8 1033.1 DAY-HOUR 12- 6 15- 9 29-12 24- 6 8-18 23- 6 1- 6 31-18 17- 6 20- 6 13- 6 7- 6 MIN. QNH PRESSURE IN HPA 1007.8 1010.8 1004.7 1011.3 1009.9 1015.2 1015.4 1018.2 1022.4 1023.7 1021.3 1008.3 1004.7 DAY-HOUR 26- 0 8- 3 7- 0 4-21 23- 3 12- 0 14- 0 12- 0 19-15 4-12 6-12 25-18 MEAN QFF PRESSURE IN HPA 1021.7 1023.0 1016.8 1013.4 1008.2 1004.8 1000.6 1002.6 1009.9 1017.5 1021.5 1020.7 1013.4 MAX. QFF PRESSURE IN HPA 1033.3 1038.5 1027.9 1023.4 1021.0 1012.4 1007.0 1008.9 1023.1 1023.7 1030.5 1035.4 1038.5 DAY-HOUR 12-15 15- 3 12-15 14- 3 25- 3 23- 3 12- 6 23- 6 27- 3 13-15 27- 3 17- 6 MIN. QFF PRESSURE IN HPA 1011.1 1011.3 1003.6 1002.4 998.1 993.0 992.4 995.2 999.6 1012.1 1010.9 1009.1 992.4 DAY-HOUR 3- 9 28- 0 7- 0 10- 0 22-21 11-21 8- 0 12- 0 8- 9 5- 0 5-12 25-18 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 754.6 754.1 753.8 757.2 755.7 758.1 757.7 759.1 761.3 761.7 760.2 754.8 757.4 MAX. QFE PRESSURE IN HPA 761.1 760.8 761.0 761.3 759.8 762.6 760.7 762.1 764.0 764.9 762.9 761.0 764.9 DAY 13 16 30 24 9 23 1 23 16 21 13 9 MIN. QFE PRESSURE IN HPA 746.0 748.8 743.6 748.9 747.9 751.8 752.0 754.2 758.1 758.7 757.0 747.1 743.6 DAY 26 8 7 5 23 12 14 12 8 5 6 26 MEAN QNH PRESSURE IN HPA 1018.7 1018.1 1017.7 1022.1 1020.1 1023.1 1022.7 1024.5 1027.3 1027.8 1025.9 1019.0 1022.2 MAX. QNH PRESSURE IN HPA 1027.0 1026.6 1026.9 1027.3 1025.4 1028.9 1026.5 1028.3 1030.7 1031.9 1029.3 1026.9 1031.9 DAY 13 16 30 24 9 23 1 23 16 21 13 9 MIN. QNH PRESSURE IN HPA 1007.8 1011.3 1004.7 1011.5 1010.2 1015.2 1015.4 1018.2 1023.2 1024.0 1021.8 1009.2 1004.7 DAY 26 8 7 5 23 12 14 12 8 5 6 26 MEAN QFF PRESSURE IN HPA 1021.2 1022.1 1015.6 1012.7 1007.7 1004.5 1000.0 1001.8 1008.7 1016.5 1020.7 1020.4 1012.7 MAX. QFF PRESSURE IN HPA 1031.1 1035.9 1022.5 1023.4 1017.3 1011.5 1005.4 1006.4 1020.3 1020.6 1027.4 1032.8 1035.9 DAY 12 15 5 15 25 23 1 28 27 20 27 17 MIN. QFF PRESSURE IN HPA 1011.7 1011.3 1003.6 1002.4 998.4 993.7 992.4 995.2 1000.4 1012.1 1011.1 1011.3 992.4 DAY 25 28 7 10 23 12 8 12 8 5 6 26 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 754.4 754.1 754.1 757.5 755.9 758.5 758.1 759.4 761.7 761.9 760.2 754.7 757.5 MAX. QFE PRESSURE IN HPA 761.2 760.7 760.8 761.7 759.9 763.2 761.4 762.6 764.6 764.9 762.9 760.1 764.9 DAY 13 25 30 24 9 23 1 23 17 21 13 7 MIN. QFE PRESSURE IN HPA 746.0 748.4 744.0 749.4 747.7 751.8 752.0 754.2 758.1 758.8 757.0 748.7 744.0 DAY 26 8 7 5 23 12 14 12 8 15 6 26 MEAN QNH PRESSURE IN HPA 1018.5 1018.0 1018.1 1022.4 1020.4 1023.7 1023.2 1024.8 1027.7 1028.0 1025.9 1018.9 1022.5 MAX. QNH PRESSURE IN HPA 1027.1 1026.5 1026.6 1027.8 1025.5 1029.7 1027.4 1028.9 1031.5 1031.9 1029.3 1025.7 1031.9 DAY 13 25 30 24 9 23 1 23 17 21 13 7 MIN. QNH PRESSURE IN HPA 1007.8 1010.8 1005.2 1012.1 1009.9 1015.2 1015.4 1018.2 1023.2 1024.1 1021.8 1011.2 1005.2 DAY 26 8 7 5 23 12 14 12 8 15 6 26 MEAN QFF PRESSURE IN HPA 1022.6 1023.4 1016.9 1013.8 1008.2 1004.9 1001.1 1003.1 1011.0 1018.2 1022.4 1021.6 1013.9 MAX. QFF PRESSURE IN HPA 1032.3 1038.5 1025.4 1023.4 1021.0 1012.4 1005.9 1008.5 1023.1 1022.4 1030.5 1033.2 1038.5 DAY 12 15 12 14 25 23 1 23 27 13 27 17 MIN. QFF PRESSURE IN HPA 1012.8 1011.7 1006.4 1005.4 999.2 994.6 994.8 996.6 1002.1 1013.5 1013.6 1013.8 994.6 DAY 25 21 7 10 23 12 8 12 8 15 6 1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 755.6 755.2 755.1 758.4 756.5 759.0 758.6 760.1 762.3 762.8 761.1 755.5 758.3 MAX. QFE PRESSURE IN HPA 761.8 762.7 763.0 762.4 760.5 763.8 761.7 763.0 765.1 765.9 763.6 761.7 765.9 DAY 12 15 29 24 9 23 1 23 17 20 13 7 MIN. QFE PRESSURE IN HPA 747.9 749.2 745.1 750.5 749.1 752.0 752.7 755.6 758.9 759.5 757.8 750.5 745.1 DAY 25 8 7 5 23 12 14 12 8 15 6 22 MEAN QNH PRESSURE IN HPA 1019.9 1019.5 1019.3 1023.5 1021.1 1024.3 1023.8 1025.7 1028.5 1029.2 1027.1 1019.9 1023.5 MAX. QNH PRESSURE IN HPA 1027.9 1029.1 1029.4 1028.7 1026.3 1030.5 1027.8 1029.4 1032.1 1033.1 1030.2 1027.8 1033.1 DAY 12 15 29 24 9 23 1 23 17 20 13 7 MIN. QNH PRESSURE IN HPA 1010.2 1011.8 1006.6 1013.5 1011.7 1015.4 1016.3 1020.0 1024.2 1025.0 1022.8 1013.5 1006.6 DAY 25 8 7 5 23 12 14 12 8 15 6 22 MEAN QFF PRESSURE IN HPA 1022.7 1024.1 1017.7 1014.2 1008.9 1005.7 1001.7 1003.6 1010.8 1018.3 1022.4 1021.9 1014.3 MAX. QFF PRESSURE IN HPA 1032.6 1037.5 1027.8 1022.8 1018.7 1011.8 1007.0 1008.9 1022.4 1022.3 1029.6 1035.4 1037.5 DAY 12 14 12 14 25 23 12 23 27 13 27 17 MIN. QFF PRESSURE IN HPA 1013.8 1012.1 1006.9 1004.9 1001.0 994.6 994.0 997.1 999.7 1013.7 1012.5 1012.4 994.0 DAY 25 28 7 10 22 12 8 12 8 15 5 1 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 754.9 755.0 755.0 758.1 756.4 758.8 758.3 759.8 762.0 762.5 760.7 754.8 758.0 MAX. QFE PRESSURE IN HPA 761.1 763.5 763.4 762.1 760.0 763.4 761.1 762.6 764.6 765.8 763.4 761.4 765.8 DAY 12 15 29 29 9 23 1 23 17 20 24 8 MIN. QFE PRESSURE IN HPA 747.0 748.9 745.5 750.4 750.0 752.1 753.1 755.8 758.5 759.6 756.7 750.2 745.5 DAY 25 8 7 5 23 12 14 12 8 4 6 25 MEAN QNH PRESSURE IN HPA 1019.1 1019.2 1019.2 1023.2 1021.0 1024.1 1023.5 1025.3 1028.2 1028.9 1026.5 1019.0 1023.1 MAX. QNH PRESSURE IN HPA 1027.0 1030.1 1030.0 1028.3 1025.6 1030.0 1027.0 1028.9 1031.5 1033.0 1030.0 1027.4 1033.0 DAY 12 15 29 29 9 23 1 23 17 20 24 8 MIN. QNH PRESSURE IN HPA 1009.0 1011.5 1007.1 1013.4 1012.9 1015.5 1016.8 1020.3 1023.7 1025.1 1021.4 1013.1 1007.1 DAY 25 8 7 5 23 12 14 12 8 4 6 25 MEAN QFF PRESSURE IN HPA 1021.0 1022.9 1017.3 1013.6 1008.2 1005.0 1000.6 1002.8 1009.8 1017.4 1021.1 1020.0 1013.3 MAX. QFF PRESSURE IN HPA 1030.5 1034.9 1027.3 1021.9 1018.3 1012.2 1005.2 1007.9 1020.1 1022.3 1028.0 1031.5 1034.9 DAY 12 15 12 15 25 23 11 27 27 11 27 17 MIN. QFF PRESSURE IN HPA 1011.1 1012.9 1008.1 1006.7 1000.0 994.0 993.4 997.4 999.6 1012.8 1011.2 1012.9 993.4 DAY 3 28 6 10 22 12 8 12 8 5 5 1 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 754.4 754.2 754.3 757.4 755.9 758.2 757.6 759.0 761.2 761.9 760.0 754.3 757.4 MAX. QFE PRESSURE IN HPA 760.8 763.2 763.7 761.1 759.7 763.1 760.3 761.7 763.5 765.0 762.8 761.0 765.0 DAY 12 15 29 19 25 23 1 31 17 27 24 8 MIN. QFE PRESSURE IN HPA 746.5 748.5 745.3 750.2 749.9 752.1 753.0 755.3 758.0 758.5 756.6 747.9 745.3 DAY 25 8 6 6 22 12 14 11 8 4 6 25 MEAN QNH PRESSURE IN HPA 1018.4 1018.3 1018.4 1022.2 1020.4 1023.4 1022.6 1024.3 1027.2 1028.0 1025.6 1018.3 1022.3 MAX. QNH PRESSURE IN HPA 1026.6 1029.7 1030.3 1027.0 1025.2 1029.6 1026.0 1027.8 1030.1 1032.0 1029.2 1026.9 1032.0 DAY 12 15 29 19 25 23 1 31 17 27 24 8 MIN. QNH PRESSURE IN HPA 1008.4 1011.0 1006.9 1013.1 1012.7 1015.5 1016.7 1019.6 1023.1 1023.7 1021.3 1010.2 1006.9 DAY 25 8 6 6 22 12 14 11 8 4 6 25 MEAN QFF PRESSURE IN HPA 1020.8 1022.1 1016.1 1012.6 1007.9 1004.6 999.8 1001.6 1008.6 1016.7 1020.5 1019.6 1012.6 MAX. QFF PRESSURE IN HPA 1030.9 1035.4 1026.7 1021.8 1016.3 1012.1 1003.9 1006.5 1018.0 1021.5 1027.8 1031.2 1035.4 DAY 12 15 12 15 25 22 1 27 27 13 27 17 MIN. QFF PRESSURE IN HPA 1011.8 1011.6 1005.5 1004.7 998.8 995.1 992.8 996.4 999.7 1012.3 1010.9 1012.0 992.8 DAY 25 28 6 10 22 12 8 12 8 4 5 1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 754.7 754.5 754.4 757.4 755.9 758.2 757.5 758.9 761.2 761.9 760.2 754.5 757.4 MAX. QFE PRESSURE IN HPA 761.6 763.1 762.0 761.1 759.7 762.6 759.9 762.3 763.8 764.7 763.0 761.0 764.7 DAY 12 15 29 19 8 23 1 31 16 20 24 8 MIN. QFE PRESSURE IN HPA 746.5 749.3 745.4 749.2 749.1 752.0 753.0 755.0 757.5 758.7 757.0 747.0 745.4 DAY 25 7 6 4 22 11 14 11 19 4 5 25 MEAN QNH PRESSURE IN HPA 1018.9 1018.6 1018.5 1022.3 1020.4 1023.3 1022.4 1024.2 1027.2 1028.0 1025.9 1018.6 1022.4 MAX. QNH PRESSURE IN HPA 1027.7 1029.6 1028.2 1027.0 1025.2 1028.9 1025.5 1028.5 1030.5 1031.6 1029.4 1026.9 1031.6 DAY 12 15 29 19 8 23 1 31 16 20 24 8 MIN. QNH PRESSURE IN HPA 1008.4 1012.0 1007.0 1011.8 1011.7 1015.4 1016.7 1019.2 1022.4 1024.0 1021.8 1009.0 1007.0 DAY 25 7 6 4 22 11 14 11 19 4 5 25 MEAN QFF PRESSURE IN HPA 1022.9 1023.9 1017.1 1013.5 1008.2 1004.5 1000.2 1002.4 1010.5 1018.3 1022.4 1021.5 1013.8 MAX. QFF PRESSURE IN HPA 1033.3 1038.1 1027.9 1022.1 1017.0 1011.1 1004.7 1007.7 1020.4 1023.7 1030.1 1033.8 1038.1 DAY 12 15 12 14 24 18 11 31 27 13 27 17 MIN. QFF PRESSURE IN HPA 1014.4 1013.4 1006.0 1004.6 999.5 994.2 994.7 996.0 1001.4 1013.5 1013.3 1009.5 994.2 DAY 25 28 6 4 22 11 7 11 3 4 4 25 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 755.1 754.8 754.8 758.0 756.4 758.6 758.1 759.6 762.0 762.4 760.5 754.8 757.9 MAX. QFE PRESSURE IN HPA 761.7 763.0 762.0 762.0 760.6 762.9 760.4 763.4 764.9 765.9 763.0 761.3 765.9 DAY 12 15 29 25 8 23 1 31 15 20 2 8 MIN. QFE PRESSURE IN HPA 746.8 749.6 746.0 750.2 748.6 752.4 753.2 755.6 758.5 759.3 757.0 746.4 746.0 DAY 25 7 6 4 22 11 13 11 21 4 5 25 MEAN QNH PRESSURE IN HPA 1019.3 1019.0 1018.9 1023.1 1021.1 1023.9 1023.2 1025.2 1028.2 1028.6 1026.3 1018.9 1023.0 MAX. QNH PRESSURE IN HPA 1027.8 1029.4 1028.2 1028.2 1026.4 1029.3 1026.1 1030.0 1031.9 1033.1 1029.4 1027.3 1033.1 DAY 12 15 29 25 8 23 1 31 15 20 2 8 MIN. QNH PRESSURE IN HPA 1008.8 1012.4 1007.8 1013.1 1011.1 1015.9 1016.9 1020.0 1023.7 1024.7 1021.8 1008.3 1007.8 DAY 25 7 6 4 22 11 13 11 21 4 5 25 MEAN QFF PRESSURE IN HPA 1022.0 1023.6 1017.2 1013.7 1008.8 1005.2 1001.1 1003.1 1010.5 1017.7 1021.6 1021.0 1013.8 MAX. QFF PRESSURE IN HPA 1031.5 1037.2 1027.8 1023.3 1016.2 1011.2 1006.4 1007.9 1020.2 1022.1 1028.0 1033.9 1037.2 DAY 12 14 12 14 24 23 11 31 27 13 27 17 MIN. QFF PRESSURE IN HPA 1012.2 1012.7 1006.5 1005.2 999.8 995.5 994.6 996.3 1000.3 1013.0 1012.3 1009.1 994.6 DAY 24 28 6 9 22 11 7 11 7 4 5 25 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 754.7 754.5 754.4 757.8 756.2 758.5 758.0 759.6 761.9 762.2 760.4 754.6 757.7 MAX. QFE PRESSURE IN HPA 761.4 762.3 761.5 762.2 760.6 762.7 760.2 763.0 764.9 765.4 762.9 761.3 765.4 DAY 12 15 29 25 8 22 21 31 15 20 2 8 MIN. QFE PRESSURE IN HPA 746.8 749.2 744.6 748.8 748.2 751.9 752.8 755.6 758.6 759.2 756.9 746.5 744.6 DAY 25 7 6 4 22 11 13 11 19 4 30 25 MEAN QNH PRESSURE IN HPA 1018.8 1018.6 1018.5 1022.8 1020.8 1023.6 1023.0 1025.1 1028.0 1028.4 1026.1 1018.8 1022.7 MAX. QNH PRESSURE IN HPA 1027.4 1028.5 1027.5 1028.4 1026.4 1029.1 1025.9 1029.4 1031.9 1032.5 1029.3 1027.3 1032.5 DAY 12 15 29 25 8 22 21 31 15 20 2 8 MIN. QNH PRESSURE IN HPA 1008.8 1011.8 1006.0 1011.3 1010.6 1015.3 1016.4 1020.0 1023.8 1024.6 1021.7 1008.4 1006.0 DAY 25 7 6 4 22 11 13 11 19 4 30 25 MEAN QFF PRESSURE IN HPA 1020.8 1022.3 1016.6 1013.0 1007.9 1004.5 1000.1 1002.6 1009.8 1017.0 1020.8 1020.0 1012.9 MAX. QFF PRESSURE IN HPA 1030.9 1035.5 1024.6 1021.3 1015.6 1010.6 1004.7 1007.8 1022.1 1020.9 1027.1 1030.7 1035.5 DAY 12 14 12 14 4 23 11 27 26 11 26 17 MIN. QFF PRESSURE IN HPA 1011.5 1012.2 1006.0 1003.7 998.1 993.0 993.1 996.8 1000.5 1012.1 1011.2 1009.2 993.0 DAY 24 27 6 9 22 11 7 6 7 4 5 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -7.5 -6.1 -4.6 4.1 7.6 15.7 21.1 17.6 14.0 9.0 4.2 -3.2 6.0 MINIMUN AIR TEMPERATURE (C) -10.6 -9.8 -8.4 0.3 3.6 11.1 16.0 12.9 9.3 4.7 0.7 -6.0 2.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 31 27 23 3 1 0 0 0 0 0 4 22 111 DAYS WITH FREEZING MIN.<= 0 31 29 31 17 8 0 0 0 0 0 7 30 153 TEMPERATURE RECORDS LOWEST(C) -16.5 -16.6 -26.6 -6.0 -4.6 5.4 11.4 6.0 4.0 1.5 -12.0 -15.0 -26.6 DAY 28 3 12 3 5 9 28 31 30 8 27 29 MAXIMUM AIR TEMPERATURE (C) -3.8 -1.9 -0.5 7.8 11.2 19.9 25.9 22.6 18.9 13.7 8.2 0.1 10.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MAXIMUM TEMP. <= 0 27 21 15 0 0 0 0 0 0 0 2 17 82 TEMPERATURE RECORDS HIGHEST(C) 2.0 4.4 5.0 14.5 19.8 26.0 29.0 27.0 21.5 17.0 12.6 6.0 29.0 DAY 6 25 20 21 30 30 5 25 14 4 21 12 DIF. BETWEEN (MAX.-MIN.) (C) 6.8 7.9 7.9 7.5 7.6 8.8 9.9 9.7 9.6 9.0 7.5 6.1 8.2 MEAN DAILY TEMP. (MDT) (C) -7.2 -5.8 -4.4 4.1 7.4 15.5 20.9 17.7 14.1 9.2 4.5 -2.9 6.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.3 21.2 1.4 0.0 0.0 0.0 0.0 22.9 HEATING DEG. DAYS(BASE 18 0C) 780.8 664.4 695.6 418.3 328.1 82.4 1.8 34.9 117.2 273.0 405.4 649.0 4451.0 DEWPOINT (MEAN C) -11.5 -10.2 -8.5 -2.9 -0.1 2.1 2.7 3.3 -2.6 -5.4 -5.6 -8.4 -3.9 MIXING RATIO (G/KG) 2.20 2.48 2.92 4.21 5.18 6.03 6.33 6.62 4.28 3.53 3.51 2.91 4.18 VAPOUR PRESSURE (HPA) 2.65 2.98 3.51 5.08 6.26 7.27 7.64 8.00 5.20 4.29 4.26 3.51 5.05 SATURATION DEF. (HPA) 0.93 1.04 1.09 3.35 4.67 11.05 17.97 12.71 11.18 7.48 4.31 1.48 6.44 RELATIVE HUMIDITY (MEAN %) 75 74 76 63 63 43 32 42 34 39 52 70 55 RELATIVE HUMIDITY (MAX. %) 85 84 87 81 77 60 48 56 50 53 64 84 69 RELATIVE HUMIDITY (MIN. %) 61 59 62 46 49 29 22 30 23 28 40 56 42 RELATIVE HUMIDITY (MEAN% 03UTC) 74 73 75 70 69 50 41 48 42 45 55 71 59 RELATIVE HUMIDITY (MEAN% 09UTC) 73 71 70 56 60 37 26 33 26 30 46 65 49 RELATIVE HUMIDITY (MEAN% 15UTC) 77 79 80 59 58 35 25 36 31 38 56 73 54 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 77.2 81.6 129.8 106.9 129.0 40.8 10.0 4.3 0.0 3.5 20.4 84.9 688.4 DAYS WITH PRECIPITATION >=10 3 2 6 3 5 2 0 0 0 0 1 3 25 DAYS WITH PRECIPITATION >= 5 6 5 8 6 10 3 1 0 0 0 2 7 48 DAYS WITH PRECIPITATION >= 1 12 10 14 10 13 7 3 1 0 1 2 14 87 DAYS WITH PRECIPITATION 15 15 20 13 20 9 3 2 0 2 5 16 120 GREATEST DAILY PRECIPITATION 12.0 29.0 23.0 37.0 19.0 13.0 7.0 4.2 0.0 2.7 11.0 16.6 37.0 DAY 17 25 15 27 9 4 8 29 ** 8 8 7 DAY WITH THUNDER STORM 0 0 2 4 10 7 4 3 0 0 0 4 34 DAYS WITH SNOW OR SLEET 16 15 19 7 6 0 0 0 0 0 2 16 81 DAYS WITH DUST 0 0 2 1 3 0 0 0 0 0 0 0 6 WIND DIRECTION (PREVAILING) 45 270 45 270 270 270 270 225 225 225 225 225 270 PREVAILING WIND SPEED(KNOTS) 17.6 8.8 15.1 8.8 9.7 7.6 7.2 7.6 9.5 9.5 9.9 12.7 8.7 PREVAILING WIND PERCENT 11.3 17.7 8.5 21.3 19.8 17.5 13.7 15.7 18.3 17.7 11.7 8.1 11.5 CALMS PERCENT OF WIND 73.8 61.2 63.3 47.5 58.9 44.6 47.6 48.8 63.3 70.2 74.6 80.2 61.2 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 16 286 6 304 270 265 281 354 251 229 251 302 288 VECTOR WIND MAGNITUDE(KNOTS) 1.5 1.2 1.7 2.7 2.2 1.6 0.2 1.2 2.1 2.1 1.1 0.7 1.1 WIND STEADINESES (MEAN %) 46.9 36.4 44.7 50.0 56.4 34.8 5.3 23.5 58.3 77.8 36.7 24.1 28.9 WIND SPEED (MEAN KNOTS) 3.2 3.3 3.8 5.4 3.9 4.6 3.8 5.1 3.6 2.7 3.0 2.9 3.8 FASTEST WIND DIRECTION 30 40 20 30 240 270 30 30 20 240 10 10 20 FASTEST WIND SPEED (KNOTS) 29 25 43 33 27 29 16 39 23 19 35 43 43 DAY 8 15 10 7 19 2 8 29 3 14 16 4 DAYS WITH SKY CLEAR (0-2)/8 10 10 10 8 5 18 22 27 29 24 15 11 189 DAYS WITH P.CLOUDY (3-6)/8 12 10 11 15 16 9 9 3 1 6 12 9 113 DAYS WITH CLOUDY (7-8)/8 9 9 10 7 10 3 0 1 0 1 3 11 64 DAYS WITH VISIBILITY =< 2 KM 13 12 12 7 10 1 0 0 0 2 1 12 70 DURATION OF SUNSHINE HOURS 143.5 126.6 139.1 196.5 164.6 299.9 326.3 332.7 292.8 272.1 178.0 126.6 2598.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 752.8 751.1 753.0 755.0 758.0 757.7 758.9 760.3 761.4 761.1 760.0 755.5 757.1 MAX. QFE PRESSURE IN HPA 761.8 757.0 759.7 759.1 764.1 763.5 763.0 763.9 765.1 765.4 767.7 761.6 767.7 DAY-HOUR 10- 6 22-18 12- 9 14- 9 29- 6 11- 6 6- 6 31-18 2- 9 30- 6 4- 6 2- 6 MIN. QFE PRESSURE IN HPA 743.6 742.7 744.2 748.5 750.9 753.3 755.2 756.2 757.0 757.7 748.0 749.5 742.7 DAY-HOUR 3- 0 11-12 31- 0 1- 0 4-12 27-12 10-15 1-15 17-15 8-15 26- 3 28- 3 MEAN QNH PRESSURE IN HPA 1016.5 1014.3 1016.7 1019.2 1023.0 1022.6 1024.2 1026.0 1027.4 1027.1 1025.6 1019.9 1021.9 MAX. QNH PRESSURE IN HPA 1027.9 1021.8 1025.2 1024.5 1030.8 1030.1 1029.4 1030.6 1032.1 1032.5 1035.4 1027.7 1035.4 DAY-HOUR 10- 6 22-18 12- 9 14- 9 29- 6 11- 6 6- 6 31-18 2- 9 30- 6 4- 6 2- 6 MIN. QNH PRESSURE IN HPA 1004.7 1003.5 1005.5 1011.0 1014.0 1017.1 1019.5 1020.8 1021.8 1022.7 1010.3 1012.2 1003.5 DAY-HOUR 3- 0 11-12 31- 0 1- 0 4-12 27-12 10-15 1-15 17-15 8-15 26- 3 28- 3 MEAN QFF PRESSURE IN HPA 1023.5 1019.4 1020.4 1013.4 1013.6 1005.0 1001.4 1006.5 1011.7 1016.5 1020.0 1022.0 1014.4 MAX. QFF PRESSURE IN HPA 1037.9 1030.4 1044.7 1020.9 1023.7 1014.3 1007.3 1018.8 1019.3 1024.8 1029.4 1033.9 1044.7 DAY-HOUR 9-15 16- 3 12-15 8- 0 2-18 4-18 14- 6 31- 3 30-18 29-15 4- 3 29- 3 MIN. QFF PRESSURE IN HPA 1006.8 1003.5 1001.4 1002.6 1005.8 995.7 995.5 997.4 1004.7 1010.3 1005.4 1016.7 995.5 DAY-HOUR 2-21 25- 3 31- 0 18- 0 31-21 27- 0 19- 0 1-12 17-21 5-18 26- 0 4- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 752.3 750.9 752.4 754.4 757.6 757.3 758.7 760.0 761.1 760.8 759.7 755.4 756.7 MAX. QFE PRESSURE IN HPA 760.9 756.5 758.0 758.3 763.0 762.0 761.6 762.9 764.6 764.4 766.4 760.5 766.4 DAY 10 23 13 13 29 11 6 16 3 30 4 2 MIN. QFE PRESSURE IN HPA 743.6 744.7 744.2 748.5 752.2 753.5 755.3 756.7 757.2 757.9 749.2 750.0 743.6 DAY 3 11 31 1 4 27 19 19 18 9 26 28 MEAN QNH PRESSURE IN HPA 1015.8 1014.0 1016.0 1018.5 1022.6 1022.1 1023.9 1025.6 1027.1 1026.6 1025.3 1019.7 1021.4 MAX. QNH PRESSURE IN HPA 1026.8 1021.2 1023.1 1023.5 1029.4 1028.2 1027.7 1029.3 1031.5 1031.2 1033.8 1026.3 1033.8 DAY 10 23 13 13 29 11 6 16 3 30 4 2 MIN. QNH PRESSURE IN HPA 1004.7 1006.1 1005.5 1011.0 1015.7 1017.3 1019.6 1021.4 1022.0 1022.9 1011.8 1012.9 1004.7 DAY 3 11 31 1 4 27 19 19 18 9 26 28 MEAN QFF PRESSURE IN HPA 1022.5 1018.9 1019.6 1012.6 1013.3 1004.5 1000.9 1005.6 1010.9 1015.4 1019.2 1021.5 1013.7 MAX. QFF PRESSURE IN HPA 1035.4 1029.3 1038.3 1020.9 1022.5 1011.7 1005.3 1016.5 1015.9 1021.7 1027.1 1033.8 1038.3 DAY 10 16 12 8 3 7 14 31 2 30 4 29 MIN. QFF PRESSURE IN HPA 1007.6 1004.2 1001.4 1002.6 1007.6 995.7 995.5 997.8 1005.2 1011.1 1005.4 1016.7 995.5 DAY 3 25 31 18 19 27 19 1 18 6 26 4 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 752.4 750.7 752.6 754.5 757.7 757.6 759.0 760.3 761.3 761.0 759.8 755.3 756.8 MAX. QFE PRESSURE IN HPA 761.1 755.4 758.0 758.5 763.3 762.9 762.2 763.1 764.6 764.5 766.4 760.5 766.4 DAY 10 16 12 26 29 11 6 31 3 30 4 2 MIN. QFE PRESSURE IN HPA 745.4 743.7 744.2 748.8 751.4 754.0 755.9 757.0 757.3 758.1 748.0 749.5 743.7 DAY 3 11 31 18 4 27 19 1 18 7 26 28 MEAN QNH PRESSURE IN HPA 1015.9 1013.8 1016.1 1018.6 1022.7 1022.6 1024.3 1026.0 1027.3 1026.9 1025.3 1019.7 1021.6 MAX. QNH PRESSURE IN HPA 1027.0 1019.8 1023.1 1023.7 1029.8 1029.3 1028.4 1029.6 1031.5 1031.4 1033.8 1026.3 1033.8 DAY 10 16 12 26 29 11 6 31 3 30 4 2 MIN. QNH PRESSURE IN HPA 1007.0 1004.8 1005.5 1011.3 1014.6 1018.0 1020.4 1021.8 1022.2 1023.2 1010.3 1012.2 1004.8 DAY 3 11 31 18 4 27 19 1 18 7 26 28 MEAN QFF PRESSURE IN HPA 1023.7 1019.8 1021.1 1013.4 1013.6 1005.0 1001.7 1006.9 1012.7 1017.5 1020.8 1022.5 1014.9 MAX. QFF PRESSURE IN HPA 1035.3 1030.4 1043.6 1019.9 1022.5 1012.1 1006.7 1018.8 1018.1 1024.5 1029.4 1033.9 1043.6 DAY 5 16 12 8 3 11 8 31 30 30 4 29 MIN. QFF PRESSURE IN HPA 1010.7 1003.5 1003.2 1004.2 1008.1 996.1 997.1 998.4 1007.6 1011.5 1005.9 1016.8 996.1 DAY 3 25 31 18 19 27 19 1 18 6 26 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 753.5 751.5 753.5 755.3 758.3 758.2 759.6 760.9 762.0 761.9 760.7 756.2 757.6 MAX. QFE PRESSURE IN HPA 761.8 756.7 759.4 758.8 764.1 763.5 763.0 763.8 764.9 765.4 767.7 761.6 767.7 DAY 10 16 12 26 29 11 6 31 2 30 4 2 MIN. QFE PRESSURE IN HPA 748.3 744.3 745.4 748.8 751.4 754.4 756.5 757.6 758.1 759.0 749.7 750.0 744.3 DAY 3 11 31 18 4 27 10 1 18 7 26 28 MEAN QNH PRESSURE IN HPA 1017.3 1014.8 1017.4 1019.6 1023.4 1023.4 1025.1 1026.7 1028.2 1028.1 1026.5 1020.8 1022.6 MAX. QNH PRESSURE IN HPA 1027.9 1021.4 1024.9 1024.1 1030.8 1030.1 1029.4 1030.5 1031.9 1032.5 1035.4 1027.7 1035.4 DAY 10 16 12 26 29 11 6 31 2 30 4 2 MIN. QNH PRESSURE IN HPA 1010.7 1005.6 1007.0 1011.3 1014.6 1018.5 1021.2 1022.6 1023.2 1024.3 1012.5 1012.9 1005.6 DAY 3 11 31 18 4 27 10 1 18 7 26 28 MEAN QFF PRESSURE IN HPA 1024.7 1019.9 1021.3 1013.6 1013.9 1006.1 1002.4 1007.5 1012.5 1017.6 1020.6 1023.1 1015.3 MAX. QFF PRESSURE IN HPA 1034.8 1029.4 1043.0 1019.5 1022.0 1012.3 1007.3 1018.2 1019.2 1024.1 1029.1 1033.8 1043.0 DAY 5 16 12 8 3 11 14 31 30 30 4 29 MIN. QFF PRESSURE IN HPA 1014.5 1006.3 1004.4 1004.8 1007.9 997.2 998.7 999.9 1006.5 1013.0 1009.6 1018.3 997.2 DAY 17 25 31 18 31 27 18 1 18 5 25 4 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 753.1 751.4 753.5 755.5 758.4 758.1 759.3 760.7 761.7 761.4 760.2 755.5 757.4 MAX. QFE PRESSURE IN HPA 761.7 756.9 759.7 759.1 763.7 762.8 763.0 763.6 765.1 764.7 767.3 761.0 767.3 DAY 10 16 12 14 29 11 6 31 2 30 4 1 MIN. QFE PRESSURE IN HPA 747.9 744.4 745.8 749.0 751.0 754.2 756.1 757.6 758.1 758.6 749.3 750.4 744.4 DAY 30 11 31 18 4 27 19 1 18 7 26 28 MEAN QNH PRESSURE IN HPA 1016.8 1014.6 1017.3 1019.8 1023.5 1023.2 1024.7 1026.5 1027.8 1027.4 1025.8 1019.9 1022.3 MAX. QNH PRESSURE IN HPA 1027.8 1021.7 1025.2 1024.5 1030.3 1029.2 1029.4 1030.2 1032.1 1031.6 1034.9 1026.9 1034.9 DAY 10 16 12 14 29 11 6 31 2 30 4 1 MIN. QNH PRESSURE IN HPA 1010.2 1005.7 1007.5 1011.6 1014.1 1018.2 1020.6 1022.6 1023.2 1023.8 1012.0 1013.4 1005.7 DAY 30 11 31 18 4 27 19 1 18 7 26 28 MEAN QFF PRESSURE IN HPA 1023.0 1019.0 1020.1 1013.7 1014.1 1005.4 1001.7 1006.5 1011.6 1016.4 1019.6 1021.2 1014.3 MAX. QFF PRESSURE IN HPA 1033.8 1028.4 1040.2 1018.6 1022.6 1010.8 1006.5 1016.6 1018.3 1022.0 1028.8 1030.0 1040.2 DAY 9 16 12 3 2 10 14 31 30 30 4 29 MIN. QFF PRESSURE IN HPA 1014.6 1007.7 1004.0 1006.4 1006.8 996.9 996.9 999.2 1006.2 1012.5 1009.8 1017.2 996.9 DAY 17 25 31 18 31 27 18 1 17 5 25 15 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 752.5 750.7 752.8 754.8 757.7 757.3 758.5 759.9 761.0 760.7 759.6 755.0 756.7 MAX. QFE PRESSURE IN HPA 761.1 756.2 759.2 758.2 763.3 761.3 762.2 762.8 764.3 764.0 766.1 760.4 766.1 DAY 10 16 12 21 29 11 6 31 2 29 4 1 MIN. QFE PRESSURE IN HPA 745.0 742.7 745.8 749.0 750.9 753.3 755.3 756.4 757.4 757.9 750.1 750.3 742.7 DAY 30 11 31 18 4 27 19 1 17 7 26 30 MEAN QNH PRESSURE IN HPA 1016.1 1013.7 1016.5 1019.0 1022.7 1022.2 1023.7 1025.4 1026.8 1026.5 1025.1 1019.3 1021.4 MAX. QNH PRESSURE IN HPA 1027.0 1020.8 1024.6 1023.3 1029.8 1027.3 1028.4 1029.2 1031.1 1030.7 1033.4 1026.1 1033.4 DAY 10 16 12 21 29 11 6 31 2 29 4 1 MIN. QNH PRESSURE IN HPA 1006.5 1003.5 1007.5 1011.6 1014.0 1017.1 1019.6 1021.0 1022.3 1022.9 1013.0 1013.2 1003.5 DAY 30 11 31 18 4 27 19 1 17 7 26 30 MEAN QFF PRESSURE IN HPA 1022.7 1018.6 1019.8 1013.0 1013.2 1004.4 1000.7 1005.6 1010.7 1015.3 1019.0 1021.0 1013.7 MAX. QFF PRESSURE IN HPA 1034.4 1028.1 1040.8 1019.7 1022.2 1011.0 1006.0 1015.6 1017.3 1020.8 1027.2 1029.7 1040.8 DAY 9 16 12 3 2 10 14 31 30 29 4 29 MIN. QFF PRESSURE IN HPA 1012.9 1007.6 1005.1 1005.3 1007.1 995.8 996.0 997.4 1005.4 1010.7 1009.1 1017.2 995.8 DAY 30 24 30 18 31 27 19 1 17 5 25 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 752.9 751.0 752.8 754.8 757.6 757.2 758.3 759.8 761.0 760.9 759.9 755.5 756.8 MAX. QFE PRESSURE IN HPA 760.9 756.2 759.2 758.4 763.1 761.0 761.7 762.8 764.3 764.9 766.1 761.0 766.1 DAY 10 16 12 13 29 10 6 31 2 29 3 1 MIN. QFE PRESSURE IN HPA 744.5 745.0 746.5 749.0 751.4 753.4 755.2 756.2 757.0 757.7 751.7 751.0 744.5 DAY 30 11 31 18 4 27 10 1 17 8 26 27 MEAN QNH PRESSURE IN HPA 1016.6 1014.2 1016.5 1019.0 1022.6 1022.0 1023.4 1025.3 1026.9 1026.8 1025.6 1019.9 1021.6 MAX. QNH PRESSURE IN HPA 1026.8 1020.8 1024.6 1023.6 1029.6 1026.9 1027.8 1029.2 1031.1 1031.9 1033.4 1026.9 1033.4 DAY 10 16 12 13 29 10 6 31 2 29 3 1 MIN. QNH PRESSURE IN HPA 1005.8 1006.5 1008.4 1011.6 1014.6 1017.2 1019.5 1020.8 1021.8 1022.7 1015.0 1014.1 1005.8 DAY 30 11 31 18 4 27 10 1 17 8 26 27 MEAN QFF PRESSURE IN HPA 1024.4 1020.2 1021.2 1013.6 1013.4 1004.3 1000.9 1006.3 1012.3 1017.4 1021.1 1022.9 1014.8 MAX. QFF PRESSURE IN HPA 1037.9 1029.3 1044.7 1020.8 1022.8 1010.9 1005.4 1016.7 1018.5 1024.8 1029.1 1030.5 1044.7 DAY 9 16 12 3 2 7 12 31 29 29 4 28 MIN. QFF PRESSURE IN HPA 1012.0 1004.6 1006.9 1006.2 1007.1 995.9 995.9 998.3 1006.2 1011.9 1009.6 1017.3 995.9 DAY 30 24 30 22 31 27 18 1 17 5 25 17 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 753.2 751.5 753.3 755.5 758.3 758.0 759.1 760.6 761.6 761.4 760.3 755.8 757.4 MAX. QFE PRESSURE IN HPA 761.5 757.0 759.6 759.0 763.3 762.7 761.8 763.9 764.7 765.2 766.7 761.3 766.7 DAY 10 22 12 13 28 10 6 31 2 29 3 1 MIN. QFE PRESSURE IN HPA 744.0 747.1 745.9 749.9 751.6 754.0 755.5 756.8 757.5 757.9 752.5 750.6 744.0 DAY 30 10 30 18 4 27 18 18 17 8 25 27 MEAN QNH PRESSURE IN HPA 1016.9 1014.8 1017.1 1019.8 1023.5 1023.0 1024.4 1026.4 1027.6 1027.3 1026.0 1020.2 1022.3 MAX. QNH PRESSURE IN HPA 1027.5 1021.8 1025.1 1024.3 1029.8 1029.1 1027.9 1030.6 1031.6 1032.2 1034.2 1027.3 1034.2 DAY 10 22 12 13 28 10 6 31 2 29 3 1 MIN. QNH PRESSURE IN HPA 1005.2 1009.2 1007.6 1012.7 1014.9 1018.0 1019.9 1021.5 1022.4 1022.9 1016.1 1013.6 1005.2 DAY 30 10 30 18 4 27 18 18 17 8 25 27 MEAN QFF PRESSURE IN HPA 1024.3 1020.1 1020.9 1013.7 1013.7 1005.6 1001.8 1007.2 1011.9 1016.8 1020.2 1022.6 1014.9 MAX. QFF PRESSURE IN HPA 1036.6 1028.1 1041.9 1020.0 1023.7 1014.3 1007.1 1017.4 1019.3 1023.5 1028.7 1032.4 1041.9 DAY 4 15 12 7 2 4 12 31 30 29 4 28 MIN. QFF PRESSURE IN HPA 1009.4 1004.9 1003.1 1007.5 1006.4 996.8 996.9 1000.6 1004.9 1010.3 1009.2 1016.8 996.8 DAY 2 24 30 17 31 26 18 1 17 5 25 17 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 753.0 751.3 753.0 755.3 758.1 757.6 758.9 760.5 761.4 761.2 760.1 755.6 757.2 MAX. QFE PRESSURE IN HPA 761.3 756.5 759.0 759.0 763.0 762.0 761.5 763.8 765.0 765.0 766.6 760.8 766.6 DAY 9 16 12 13 28 10 6 31 2 29 3 1 MIN. QFE PRESSURE IN HPA 744.0 745.7 745.0 749.9 752.5 754.0 755.4 757.0 757.2 757.9 750.6 750.0 744.0 DAY 2 10 30 18 4 27 18 18 17 8 25 27 MEAN QNH PRESSURE IN HPA 1016.6 1014.5 1016.7 1019.6 1023.2 1022.6 1024.2 1026.3 1027.4 1027.1 1025.7 1020.0 1022.0 MAX. QNH PRESSURE IN HPA 1027.3 1021.2 1024.3 1024.3 1029.4 1028.2 1027.5 1030.5 1032.0 1032.0 1034.0 1026.6 1034.0 DAY 9 16 12 13 28 10 6 31 2 29 3 1 MIN. QNH PRESSURE IN HPA 1005.2 1007.4 1006.5 1012.7 1016.1 1018.0 1019.8 1021.8 1022.0 1022.9 1013.6 1012.9 1005.2 DAY 2 10 30 18 4 27 18 18 17 8 25 27 MEAN QFF PRESSURE IN HPA 1022.9 1019.1 1019.4 1013.3 1013.7 1004.7 1001.2 1006.4 1011.3 1016.0 1019.6 1021.5 1014.1 MAX. QFF PRESSURE IN HPA 1035.6 1028.2 1037.4 1020.4 1023.1 1011.3 1006.6 1016.0 1017.6 1022.4 1027.4 1033.1 1037.4 DAY 4 15 12 7 2 6 14 31 30 29 3 28 MIN. QFF PRESSURE IN HPA 1006.8 1006.6 1001.5 1004.8 1005.8 996.7 995.6 1000.2 1004.7 1010.6 1006.2 1016.8 995.6 DAY 2 24 30 17 31 26 18 1 17 5 25 13 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -6.5 -4.4 -2.2 6.1 10.7 17.0 19.7 19.4 17.9 9.1 1.7 1.0 7.5 MINIMUN AIR TEMPERATURE (C) -9.7 -7.9 -5.5 2.4 6.7 11.8 14.9 14.7 12.6 4.0 -1.5 -2.6 3.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 30 24 20 0 0 0 0 0 0 0 7 10 91 DAYS WITH FREEZING MIN.<= 0 31 28 31 4 0 0 0 0 0 2 19 24 139 TEMPERATURE RECORDS LOWEST(C) -14.8 -16.5 -13.0 -1.0 0.2 7.2 11.6 11.4 8.2 -1.2 -11.0 -9.0 -16.5 DAY 18 17 23 14 8 2 20 25 25 8 15 5 MAXIMUM AIR TEMPERATURE (C) -2.6 -0.7 1.4 9.6 14.8 21.5 24.5 24.2 22.2 12.3 4.1 3.9 11.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MAXIMUM TEMP. <= 0 24 18 10 0 0 0 0 0 0 0 4 6 62 TEMPERATURE RECORDS HIGHEST(C) 4.5 3.0 7.0 16.2 19.8 27.0 27.5 27.0 26.2 20.6 8.6 7.6 27.5 DAY 27 22 31 19 20 29 15 14 5 1 9 29 DIF. BETWEEN (MAX.-MIN.) (C) 7.1 7.2 6.9 7.2 8.1 9.7 9.6 9.5 9.6 8.3 5.6 6.5 8.0 MEAN DAILY TEMP. (MDT) (C) -6.1 -4.3 -2.1 6.0 10.8 16.7 19.7 19.5 17.4 8.2 1.3 0.6 7.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 1.0 5.8 3.1 0.0 0.0 0.0 0.0 10.0 HEATING DEG. DAYS(BASE 18 0C) 747.8 624.8 621.6 360.0 224.7 57.0 1.4 4.3 37.7 305.0 500.9 538.5 4023.8 DEWPOINT (MEAN C) -12.2 -10.1 -8.6 -3.7 0.0 0.6 3.8 3.4 0.0 -3.1 -2.9 -6.0 -3.2 MIXING RATIO (G/KG) 2.09 2.64 2.80 4.01 5.19 5.43 6.82 6.57 5.17 4.10 4.35 3.37 4.38 VAPOUR PRESSURE (HPA) 2.53 3.18 3.38 4.84 6.28 6.57 8.23 7.95 6.28 4.99 5.26 4.09 5.30 SATURATION DEF. (HPA) 1.35 1.38 1.99 4.77 7.05 13.41 15.07 14.93 14.67 6.88 1.87 2.60 7.16 RELATIVE HUMIDITY (MEAN %) 66 69 65 53 50 35 37 37 32 46 75 63 52 RELATIVE HUMIDITY (MAX. %) 80 83 79 70 66 51 52 49 44 58 85 78 66 RELATIVE HUMIDITY (MIN. %) 53 51 50 39 37 24 27 27 23 36 63 51 40 RELATIVE HUMIDITY (MEAN% 03UTC) 65 64 66 57 58 42 43 43 40 55 75 60 56 RELATIVE HUMIDITY (MEAN% 09UTC) 60 64 60 47 45 30 30 30 26 41 74 57 47 RELATIVE HUMIDITY (MEAN% 15UTC) 69 74 65 51 46 29 31 32 29 48 79 76 52 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 44.1 189.1 207.1 46.2 28.4 9.0 3.0 0.8 0.0 8.8 123.8 17.4 677.7 DAYS WITH PRECIPITATION >=10 1 7 9 3 0 0 0 0 0 0 5 0 25 DAYS WITH PRECIPITATION >= 5 1 9 12 3 3 1 0 0 0 1 10 1 41 DAYS WITH PRECIPITATION >= 1 8 14 15 4 4 2 1 0 0 2 15 5 70 DAYS WITH PRECIPITATION 13 17 18 9 9 4 3 3 0 6 19 9 110 GREATEST DAILY PRECIPITATION 24.0 38.0 54.0 16.0 9.0 5.0 3.0 0.4 0.0 6.0 23.0 8.0 54.0 DAY 8 21 8 8 12 3 29 9 ** 7 1 16 DAY WITH THUNDER STORM 0 0 5 3 7 2 2 2 0 0 1 0 22 DAYS WITH SNOW OR SLEET 13 17 17 3 1 0 0 0 0 1 12 10 74 DAYS WITH DUST 0 0 0 3 4 2 0 0 0 0 2 0 11 WIND DIRECTION (PREVAILING) 225 225 270 225 225 270 225 225 225 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 11.4 11.7 12.2 13.8 12.5 11.5 7.4 7.6 7.7 7.4 7.2 6.3 9.7 PREVAILING WIND PERCENT 5.2 8.9 11.3 15.8 17.7 15.8 12.5 11.7 15.9 35.5 16.0 9.7 13.1 CALMS PERCENT OF WIND 84.7 78.1 66.9 55.4 52.8 54.6 51.6 54.4 61.1 49.7 70.0 80.6 62.9 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 208 155 150 155 2612 VECTOR WIND DIRECTION (MEAN) 2 279 310 253 267 269 338 313 258 229 265 256 272 VECTOR WIND MAGNITUDE(KNOTS) 1.2 1.4 1.8 3.5 2.1 2.5 0.8 1.2 1.0 2.8 0.8 0.7 1.4 WIND STEADINESES (MEAN %) 42.9 48.3 40.0 67.3 32.3 43.9 19.0 28.6 28.6 71.8 29.6 53.8 35.9 WIND SPEED (MEAN KNOTS) 2.8 2.9 4.5 5.2 6.5 5.7 4.2 4.2 3.5 3.9 2.7 1.3 3.9 FASTEST WIND DIRECTION 30 10 10 220 10 10 10 10 10 220 10 10 30 FASTEST WIND SPEED (KNOTS) 49 43 49 35 49 49 29 29 35 19 29 29 49 DAY 18 5 12 18 29 11 16 23 14 2 29 6 DAYS WITH SKY CLEAR (0-2)/8 18 10 11 5 8 25 21 24 29 19 9 15 194 DAYS WITH P.CLOUDY (3-6)/8 9 9 13 19 17 5 9 7 1 9 10 10 118 DAYS WITH CLOUDY (7-8)/8 4 9 7 6 6 0 1 0 0 3 11 6 53 DAYS WITH VISIBILITY =< 2 KM 10 13 14 1 2 0 0 0 0 0 13 4 57 DURATION OF SUNSHINE HOURS 184.7 121.8 185.3 185.7 242.8 350.2 329.2 328.8 308.8 231.4 128.6 174.2 2771.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 754.3 754.3 754.7 756.6 758.6 758.7 759.4 760.8 761.3 763.4 758.1 758.9 758.3 MAX. QFE PRESSURE IN HPA 762.8 760.6 764.0 763.4 762.8 764.2 764.3 764.8 765.9 769.0 763.9 765.2 769.0 DAY-HOUR 6- 6 9- 6 31- 6 1- 6 26- 9 22-18 27- 6 31- 6 23- 6 17- 6 21- 6 26- 6 MIN. QFE PRESSURE IN HPA 745.2 748.4 744.3 750.1 753.9 753.5 755.0 756.0 757.2 757.3 747.4 751.3 744.3 DAY-HOUR 8-12 5- 0 22- 3 13-12 7-12 3-15 12- 0 12-12 29-12 28-12 14- 3 5-12 MEAN QNH PRESSURE IN HPA 1018.3 1018.4 1018.8 1021.3 1023.8 1024.0 1024.9 1026.7 1027.3 1029.9 1023.3 1024.2 1023.4 MAX. QNH PRESSURE IN HPA 1029.2 1026.4 1030.7 1030.0 1029.2 1031.0 1031.1 1031.7 1033.1 1037.1 1030.6 1032.2 1037.1 DAY-HOUR 6- 6 9- 6 31- 6 1- 6 26- 9 22-18 27- 6 31- 6 23- 6 17- 6 21- 6 26- 6 MIN. QNH PRESSURE IN HPA 1006.7 1010.8 1005.6 1013.0 1017.8 1017.3 1019.2 1020.5 1022.0 1022.2 1009.5 1014.5 1005.6 DAY-HOUR 8-12 5- 0 22- 3 13-12 7-12 3-15 12- 0 12-12 29-12 28-12 14- 3 5-12 MEAN QFF PRESSURE IN HPA 1024.3 1021.9 1019.9 1013.5 1011.1 1005.2 1003.4 1005.6 1007.8 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1036.9 1034.4 1030.1 1024.2 1024.0 1017.4 1010.9 1010.8 1016.1 ****** ****** ****** ****** DAY-HOUR 6- 6 9-15 23- 6 1- 3 9- 3 22-18 27- 6 25- 6 16- 6 **-** **-** **-** MIN. QFF PRESSURE IN HPA 1008.7 1008.6 1005.8 1003.0 1004.5 998.5 996.6 998.0 1001.7 ****** ****** ****** ****** DAY-HOUR 9- 0 3-12 22- 0 20-18 29- 0 19- 0 12- 0 12-12 3-12 **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 754.0 753.9 753.9 756.3 757.9 758.3 759.0 760.5 761.2 ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 760.7 759.3 762.5 762.6 761.7 763.7 763.2 764.0 764.2 ****** ****** ****** ****** DAY 6 9 31 1 27 23 27 31 16 ** ** ** MIN. QFE PRESSURE IN HPA 745.4 748.4 744.4 750.7 754.6 753.7 755.0 756.5 758.6 ****** ****** ****** ****** DAY 9 5 22 13 6 4 12 12 14 ** ** ** MEAN QNH PRESSURE IN HPA 1017.9 1017.9 1017.8 1020.9 1022.9 1023.4 1024.4 1026.2 1027.1 ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1026.5 1024.7 1028.8 1028.9 1027.8 1030.3 1029.7 1030.7 1031.0 ****** ****** ****** ****** DAY 6 9 31 1 27 23 27 31 16 ** ** ** MIN. QNH PRESSURE IN HPA 1007.0 1010.8 1005.7 1013.8 1018.7 1017.6 1019.2 1021.2 1023.8 ****** ****** ****** ****** DAY 9 5 22 13 6 4 12 12 14 ** ** ** MEAN QFF PRESSURE IN HPA 1023.5 1021.1 1018.6 1012.9 1010.0 1004.8 1002.6 1004.9 1006.6 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1033.0 1029.5 1027.1 1023.4 1018.8 1014.3 1008.9 1008.8 1012.6 ****** ****** ****** ****** DAY 6 9 14 1 10 23 30 26 17 ** ** ** MIN. QFF PRESSURE IN HPA 1008.7 1011.0 1005.8 1005.0 1004.5 998.5 996.6 998.7 1002.9 ****** ****** ****** ****** DAY 9 4 22 13 29 19 12 12 3 ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 753.9 753.9 754.3 756.4 758.3 758.7 759.5 760.9 761.4 763.3 757.8 758.7 758.1 MAX. QFE PRESSURE IN HPA 760.7 759.7 763.2 762.6 761.8 763.8 763.8 764.4 765.0 768.1 762.9 763.9 768.1 DAY 6 9 31 1 26 23 27 31 23 17 21 27 MIN. QFE PRESSURE IN HPA 745.4 748.8 744.3 750.9 754.7 754.3 755.8 756.9 757.7 759.2 747.4 751.4 744.3 DAY 9 5 22 13 7 4 13 12 29 29 14 5 MEAN QNH PRESSURE IN HPA 1017.8 1017.9 1018.4 1021.1 1023.5 1023.9 1025.0 1026.8 1027.3 1029.8 1022.8 1023.9 1023.2 MAX. QNH PRESSURE IN HPA 1026.5 1025.2 1029.7 1028.9 1027.9 1030.5 1030.5 1031.2 1032.0 1035.9 1029.3 1030.6 1035.9 DAY 6 9 31 1 26 23 27 31 23 17 21 27 MIN. QNH PRESSURE IN HPA 1007.0 1011.3 1005.6 1014.0 1018.9 1018.3 1020.3 1021.7 1022.7 1024.6 1009.5 1014.6 1005.6 DAY 9 5 22 13 7 4 13 12 29 29 14 5 MEAN QFF PRESSURE IN HPA 1024.7 1022.3 1020.4 1013.8 1011.2 1005.1 1003.4 1006.2 1009.4 1021.5 1020.5 1023.6 1015.2 MAX. QFF PRESSURE IN HPA 1033.9 1032.8 1029.6 1024.2 1024.0 1016.1 1009.2 1010.3 1016.1 1027.8 1028.1 1031.2 1033.9 DAY 6 9 16 1 9 23 27 25 23 8 22 7 MIN. QFF PRESSURE IN HPA 1009.0 1010.1 1009.3 1006.8 1005.9 1000.1 999.0 1000.1 1002.8 1010.5 1007.4 1019.2 999.0 DAY 9 3 22 13 21 19 12 12 3 2 14 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 754.8 755.0 755.3 757.3 759.0 759.2 760.1 761.6 762.1 764.2 758.8 759.6 758.9 MAX. QFE PRESSURE IN HPA 762.8 760.6 764.0 763.4 762.5 764.2 764.3 764.8 765.9 769.0 763.9 765.2 769.0 DAY 6 9 31 1 26 23 27 31 23 17 21 26 MIN. QFE PRESSURE IN HPA 746.7 750.1 745.2 751.1 755.0 755.0 756.3 757.3 758.3 760.3 748.4 752.3 745.2 DAY 9 4 22 13 7 4 13 12 29 28 14 5 MEAN QNH PRESSURE IN HPA 1018.9 1019.2 1019.6 1022.1 1024.4 1024.7 1025.7 1027.6 1028.3 1030.9 1024.1 1025.1 1024.2 MAX. QNH PRESSURE IN HPA 1029.2 1026.4 1030.7 1030.0 1028.8 1031.0 1031.1 1031.7 1033.1 1037.1 1030.6 1032.2 1037.1 DAY 6 9 31 1 26 23 27 31 23 17 21 26 MIN. QNH PRESSURE IN HPA 1008.7 1013.0 1006.7 1014.3 1019.2 1019.2 1020.9 1022.2 1023.5 1026.0 1010.8 1015.8 1006.7 DAY 9 4 22 13 7 4 13 12 29 28 14 5 MEAN QFF PRESSURE IN HPA 1025.5 1023.1 1020.7 1014.2 1011.9 1006.2 1004.4 1006.7 1008.4 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1036.9 1034.1 1030.1 1024.2 1022.8 1016.4 1010.9 1010.8 1016.1 ****** ****** ****** ****** DAY 6 9 23 1 9 23 27 25 16 ** ** ** MIN. QFF PRESSURE IN HPA 1013.0 1011.0 1010.4 1006.9 1006.5 1001.2 999.9 999.6 1003.7 ****** ****** ****** ****** DAY 9 3 22 21 21 19 12 12 3 ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 754.5 754.8 755.2 757.0 759.0 759.2 759.8 761.2 761.7 763.6 758.1 758.9 758.6 MAX. QFE PRESSURE IN HPA 762.0 760.6 763.6 762.5 762.8 763.8 764.1 764.4 765.5 768.4 763.2 764.0 768.4 DAY 6 9 31 1 26 23 27 31 23 17 21 26 MIN. QFE PRESSURE IN HPA 746.2 750.0 746.1 750.5 754.9 754.9 756.1 756.9 757.9 758.7 748.9 751.6 746.1 DAY 8 15 22 13 7 4 12 12 29 28 14 5 MEAN QNH PRESSURE IN HPA 1018.5 1019.0 1019.5 1021.8 1024.3 1024.5 1025.4 1027.2 1027.8 1030.1 1023.2 1024.2 1023.8 MAX. QNH PRESSURE IN HPA 1028.2 1026.4 1030.2 1028.8 1029.2 1030.5 1030.8 1031.2 1032.6 1036.3 1029.7 1030.7 1036.3 DAY 6 9 31 1 26 23 27 31 23 17 21 26 MIN. QNH PRESSURE IN HPA 1008.0 1012.9 1007.9 1013.5 1019.1 1019.1 1020.6 1021.7 1022.9 1024.0 1011.5 1014.9 1007.9 DAY 8 15 22 13 7 4 12 12 29 28 14 5 MEAN QFF PRESSURE IN HPA 1023.8 1021.9 1019.9 1013.7 1011.4 1005.7 1003.8 1005.7 1007.6 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1035.0 1030.8 1028.8 1022.7 1022.1 1015.0 1009.9 1009.4 1014.3 ****** ****** ****** ****** DAY 6 9 23 1 9 23 27 25 16 ** ** ** MIN. QFF PRESSURE IN HPA 1009.5 1010.5 1011.0 1006.6 1005.3 999.9 998.8 999.1 1003.3 ****** ****** ****** ****** DAY 8 3 21 13 20 18 12 12 3 ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 753.8 754.0 754.4 756.2 758.6 758.5 759.2 760.4 760.8 762.9 757.8 758.5 757.9 MAX. QFE PRESSURE IN HPA 761.5 760.0 763.0 760.9 762.1 763.3 763.3 763.2 764.6 767.8 762.6 763.8 767.8 DAY 6 9 31 17 26 23 27 30 23 17 21 26 MIN. QFE PRESSURE IN HPA 745.2 748.5 746.9 750.1 753.9 754.0 755.4 756.0 757.2 757.3 752.1 751.3 745.2 DAY 8 3 12 13 7 3 13 12 29 28 11 5 MEAN QNH PRESSURE IN HPA 1017.7 1017.9 1018.5 1020.7 1023.8 1023.6 1024.5 1026.1 1026.7 1029.3 1022.8 1023.7 1022.9 MAX. QNH PRESSURE IN HPA 1027.5 1025.6 1029.4 1026.8 1028.3 1029.8 1029.8 1029.7 1031.5 1035.6 1028.9 1030.5 1035.6 DAY 6 9 31 17 26 23 27 30 23 17 21 26 MIN. QNH PRESSURE IN HPA 1006.7 1011.0 1008.9 1013.0 1017.8 1018.0 1019.8 1020.5 1022.0 1022.2 1015.5 1014.5 1006.7 DAY 8 3 12 13 7 3 13 12 29 28 11 5 MEAN QFF PRESSURE IN HPA 1023.2 1021.0 1019.5 1012.9 1010.9 1004.8 1002.7 1004.6 1006.4 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1033.9 1031.2 1028.2 1021.3 1021.3 1014.4 1009.3 1008.4 1012.3 ****** ****** ****** ****** DAY 6 9 23 1 9 22 29 25 16 ** ** ** MIN. QFF PRESSURE IN HPA 1009.0 1008.6 1008.6 1005.5 1004.9 999.5 997.5 998.0 1001.7 ****** ****** ****** ****** DAY 8 3 21 20 20 18 12 12 3 ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 754.2 754.3 754.6 756.3 758.4 758.3 759.0 760.3 760.8 763.2 758.2 758.9 758.0 MAX. QFE PRESSURE IN HPA 761.5 760.0 762.5 761.2 762.1 763.3 763.2 763.7 764.6 768.0 762.4 764.1 768.0 DAY 6 9 30 16 26 22 27 30 23 17 20 26 MIN. QFE PRESSURE IN HPA 745.9 749.1 747.3 750.5 754.1 753.5 755.3 756.0 757.7 757.6 751.3 751.6 745.9 DAY 8 4 21 13 7 3 12 12 29 28 13 4 MEAN QNH PRESSURE IN HPA 1018.3 1018.3 1018.7 1020.9 1023.6 1023.5 1024.3 1026.0 1026.7 1029.7 1023.3 1024.2 1023.1 MAX. QNH PRESSURE IN HPA 1027.5 1025.6 1028.8 1027.1 1028.3 1029.8 1029.7 1030.3 1031.5 1035.8 1028.7 1030.8 1035.8 DAY 6 9 30 16 26 22 27 30 23 17 20 26 MIN. QNH PRESSURE IN HPA 1007.6 1011.7 1009.4 1013.5 1018.1 1017.3 1019.6 1020.5 1022.7 1022.6 1014.5 1014.9 1007.6 DAY 8 4 21 13 7 3 12 12 29 28 13 4 MEAN QFF PRESSURE IN HPA 1025.0 1022.5 1020.7 1013.5 1011.2 1004.5 1002.8 1005.3 1008.8 1021.4 1021.2 1023.5 1015.0 MAX. QFF PRESSURE IN HPA 1034.9 1034.4 1030.1 1020.4 1022.0 1015.5 1009.9 1009.4 1015.8 1027.8 1031.6 1032.7 1034.9 DAY 19 9 16 1 8 22 27 25 23 8 30 6 MIN. QFF PRESSURE IN HPA 1010.0 1010.8 1009.7 1004.5 1005.0 999.9 998.1 998.7 1002.6 1010.2 1008.7 1018.8 998.1 DAY 8 3 21 20 20 18 12 12 3 2 13 28 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 754.7 754.6 755.1 757.0 758.9 758.9 759.7 761.1 761.5 ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 762.0 760.0 763.5 762.2 762.3 764.2 763.6 764.6 763.8 ****** ****** ****** ****** DAY 6 9 31 17 26 22 27 30 15 ** ** ** MIN. QFE PRESSURE IN HPA 746.0 749.2 747.5 751.3 755.3 754.0 756.2 757.0 758.8 ****** ****** ****** ****** DAY 8 3 21 13 7 3 11 12 13 ** ** ** MEAN QNH PRESSURE IN HPA 1018.8 1018.8 1019.3 1021.8 1024.2 1024.2 1025.2 1027.0 1027.5 ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1028.2 1025.6 1030.1 1028.4 1028.5 1031.0 1030.2 1031.5 1030.5 ****** ****** ****** ****** DAY 6 9 31 17 26 22 27 30 15 ** ** ** MIN. QNH PRESSURE IN HPA 1007.8 1011.8 1009.7 1014.5 1019.6 1018.0 1020.8 1021.8 1024.1 ****** ****** ****** ****** DAY 8 3 21 13 7 3 11 12 13 ** ** ** MEAN QFF PRESSURE IN HPA 1025.3 1022.5 1020.3 1013.9 1011.7 1005.7 1003.9 1006.0 1007.5 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1036.7 1032.8 1029.1 1019.6 1021.2 1017.4 1010.2 1010.2 1014.3 ****** ****** ****** ****** DAY 19 9 23 1 8 22 27 25 16 ** ** ** MIN. QFF PRESSURE IN HPA 1010.6 1010.3 1009.2 1003.0 1005.8 1001.2 999.1 998.9 1003.6 ****** ****** ****** ****** DAY 8 3 21 20 20 18 3 12 3 ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 754.4 754.3 754.9 756.7 758.5 758.7 759.4 760.9 761.3 ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 761.1 759.7 763.5 761.9 762.0 764.2 763.4 764.7 764.2 ****** ****** ****** ****** DAY 6 9 31 17 26 22 27 30 15 ** ** ** MIN. QFE PRESSURE IN HPA 746.3 748.7 745.9 751.3 755.4 754.0 755.5 757.0 758.8 ****** ****** ****** ****** DAY 8 4 21 13 7 3 11 11 13 ** ** ** MEAN QNH PRESSURE IN HPA 1018.5 1018.4 1019.1 1021.4 1023.7 1024.0 1024.9 1026.7 1027.3 ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1027.0 1025.2 1030.1 1028.0 1028.2 1031.0 1030.0 1031.6 1031.0 ****** ****** ****** ****** DAY 6 9 31 17 26 22 27 30 15 ** ** ** MIN. QNH PRESSURE IN HPA 1008.1 1011.2 1007.6 1014.5 1019.8 1018.0 1019.9 1021.8 1024.1 ****** ****** ****** ****** DAY 8 4 21 13 7 3 11 11 13 ** ** ** MEAN QFF PRESSURE IN HPA 1023.7 1021.3 1019.6 1013.2 1010.7 1005.1 1003.3 1005.3 1006.9 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1035.4 1030.1 1027.1 1019.5 1020.8 1016.6 1008.8 1009.6 1013.4 ****** ****** ****** ****** DAY 19 16 13 5 9 22 27 25 15 ** ** ** MIN. QFF PRESSURE IN HPA 1009.5 1009.8 1007.4 1003.5 1005.5 1000.0 998.4 999.4 1003.0 ****** ****** ****** ****** DAY 8 3 21 20 20 30 11 11 2 ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.5 -3.3 2.7 9.3 12.7 19.0 23.5 23.5 14.9 8.6 4.4 -3.6 9.2 MINIMUN AIR TEMPERATURE (C) -5.0 -7.6 -1.5 3.9 7.1 12.4 16.2 16.4 9.3 5.0 0.9 -7.3 4.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 21 27 8 1 0 0 0 0 0 0 1 22 80 DAYS WITH FREEZING MIN.<= 0 29 28 20 4 0 0 0 0 0 0 12 31 124 TEMPERATURE RECORDS LOWEST(C) -10.0 -14.0 -7.0 -4.6 1.5 5.0 10.0 13.0 5.8 1.5 -4.6 -16.5 -16.5 DAY 24 4 16 5 7 5 1 13 15 25 27 6 MAXIMUM AIR TEMPERATURE (C) 1.4 -0.3 5.4 12.5 15.4 22.0 26.9 27.0 18.4 11.6 6.8 -0.3 12.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 2 1 0 0 0 0 3 DAYS WITH MAXIMUM TEMP. <= 0 9 16 3 0 0 0 0 0 0 0 0 16 44 TEMPERATURE RECORDS HIGHEST(C) 6.5 6.2 12.0 19.6 21.0 25.2 30.5 30.0 23.2 16.4 11.0 5.8 30.5 DAY 3 27 31 25 30 20 30 1 1 1 3 28 DIF. BETWEEN (MAX.-MIN.) (C) 6.4 7.3 6.9 8.6 8.3 9.6 10.7 10.6 9.1 6.6 5.9 7.0 8.1 MEAN DAILY TEMP. (MDT) (C) -1.8 -4.0 1.9 8.2 11.2 17.2 21.6 21.7 13.8 8.3 3.9 -3.8 8.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.0 39.1 26.1 0.0 0.0 0.0 0.0 65.2 HEATING DEG. DAYS(BASE 18 0C) 614.5 615.1 497.6 293.1 209.7 36.9 2.8 0.0 125.9 300.9 423.9 676.4 3797.1 DEWPOINT (MEAN C) -6.6 -8.9 -5.4 -1.8 0.4 2.0 4.3 2.8 -1.3 1.8 -2.6 -10.2 -2.1 MIXING RATIO (G/KG) 3.29 2.74 3.51 4.57 5.32 6.02 7.00 6.44 4.86 5.86 4.41 2.54 4.71 VAPOUR PRESSURE (HPA) 3.97 3.30 4.23 5.53 6.44 7.25 8.43 7.77 5.90 7.11 5.34 3.07 5.69 SATURATION DEF. (HPA) 1.61 1.61 3.41 6.72 8.63 15.09 21.13 21.58 11.41 4.19 3.17 1.85 8.37 RELATIVE HUMIDITY (MEAN %) 72 69 59 49 45 34 30 28 36 65 64 63 51 RELATIVE HUMIDITY (MAX. %) 83 82 72 63 58 46 42 39 50 78 75 77 64 RELATIVE HUMIDITY (MIN. %) 59 56 48 38 39 26 24 22 28 55 53 50 42 RELATIVE HUMIDITY (MEAN% 03UTC) 70 70 65 60 53 44 42 38 48 74 68 66 58 RELATIVE HUMIDITY (MEAN% 09UTC) 68 66 56 43 42 31 27 25 31 60 60 58 47 RELATIVE HUMIDITY (MEAN% 15UTC) 79 75 58 48 47 31 28 26 34 67 71 69 53 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 87.9 55.6 61.6 25.5 78.5 6.0 0.0 0.0 5.2 65.2 212.7 25.6 623.8 DAYS WITH PRECIPITATION >=10 4 1 1 1 2 0 0 0 0 2 8 1 20 DAYS WITH PRECIPITATION >= 5 6 2 3 3 5 1 0 0 0 5 11 2 38 DAYS WITH PRECIPITATION >= 1 8 8 6 6 7 2 0 0 3 8 14 5 67 DAYS WITH PRECIPITATION 11 16 14 10 10 3 0 0 6 16 15 12 113 GREATEST DAILY PRECIPITATION 23.0 30.0 33.0 10.0 33.0 5.0 0.0 0.0 3.0 22.0 46.0 10.0 46.0 DAY 5 1 12 30 6 5 ** ** 6 23 5 4 DAY WITH THUNDER STORM 1 0 1 0 5 1 0 0 0 6 2 0 16 DAYS WITH SNOW OR SLEET 9 15 9 3 0 0 0 0 0 0 2 10 48 DAYS WITH DUST 0 0 0 3 0 1 0 0 0 0 0 0 4 WIND DIRECTION (PREVAILING) 225 225 225 225 225 225 225 225 225 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 7.7 6.4 8.3 9.3 9.8 8.0 6.9 7.5 8.2 6.9 7.8 9.0 8.1 PREVAILING WIND PERCENT 13.5 13.6 25.2 30.0 27.5 24.7 29.7 25.8 33.3 25.8 17.3 23.2 24.2 CALMS PERCENT OF WIND 67.1 61.4 52.9 36.0 32.2 29.3 30.3 32.9 46.0 47.7 58.0 60.0 46.1 NO. OF WIND OBSERVATION 155 140 155 150 149 150 155 155 150 155 150 155 1819 VECTOR WIND DIRECTION (MEAN) 333 308 244 255 254 253 225 224 238 242 239 252 250 VECTOR WIND MAGNITUDE(KNOTS) 1.0 1.9 2.0 3.6 3.8 2.4 2.6 2.7 2.4 1.7 1.8 1.8 2.1 WIND STEADINESES (MEAN %) 30.3 44.2 51.3 55.4 55.1 37.5 52.0 55.1 51.1 43.6 60.0 47.4 44.7 WIND SPEED (MEAN KNOTS) 3.3 4.3 3.9 6.5 6.9 6.4 5.0 4.9 4.7 3.9 3.0 3.8 4.7 FASTEST WIND DIRECTION 360 10 280 360 30 10 250 280 10 10 240 360 10 FASTEST WIND SPEED (KNOTS) 23 33 19 23 29 31 16 16 19 19 19 23 33 DAY 13 18 8 4 22 5 26 1 8 6 8 24 DAYS WITH SKY CLEAR (0-2)/8 12 11 6 11 17 25 31 31 23 9 10 14 200 DAYS WITH P.CLOUDY (3-6)/8 13 8 18 13 12 5 0 0 5 17 11 10 112 DAYS WITH CLOUDY (7-8)/8 6 9 7 6 2 0 0 0 2 5 9 7 53 DAYS WITH VISIBILITY =< 2 KM 7 10 4 1 1 0 0 0 0 2 5 5 35 DURATION OF SUNSHINE HOURS 144.8 127.9 177.3 221.0 261.8 326.6 372.8 364.0 258.8 175.2 149.9 171.4 2751.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 755.8 752.6 755.5 758.6 758.9 756.9 757.1 758.7 762.8 762.7 758.3 755.9 757.8 MAX. QFE PRESSURE IN HPA 763.5 758.6 761.4 763.9 763.6 761.6 760.0 762.8 768.3 767.2 765.7 761.4 768.3 DAY-HOUR 10- 6 20- 9 31- 6 5- 9 21- 6 9- 6 13- 6 15- 6 23- 6 10- 6 2- 6 30- 6 MIN. QFE PRESSURE IN HPA 746.6 746.0 747.0 749.6 751.3 752.1 754.1 754.8 758.4 758.4 745.7 743.6 743.6 DAY-HOUR 16-12 12- 3 12-12 2-12 1-15 4-15 8-15 2-15 2-15 2-12 26- 3 4-12 MEAN QNH PRESSURE IN HPA 1020.2 1016.2 1019.9 1023.8 1024.3 1021.6 1021.9 1024.0 1029.2 1029.0 1023.4 1020.4 1022.8 MAX. QNH PRESSURE IN HPA 1030.1 1023.8 1027.4 1030.6 1030.2 1027.7 1025.6 1029.2 1036.2 1034.8 1032.9 1027.4 1036.2 DAY-HOUR 10- 6 20- 9 31- 6 5- 9 21- 6 9- 6 13- 6 15- 6 23- 6 10- 6 2- 6 30- 6 MIN. QNH PRESSURE IN HPA 1008.5 1007.8 1009.0 1012.4 1014.5 1015.5 1018.1 1019.0 1023.6 1023.6 1007.4 1004.7 1004.7 DAY-HOUR 16-12 12- 3 12-12 2-12 1-15 4-15 8-15 2-15 2-15 2-12 26- 3 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 755.5 752.3 755.1 758.6 758.8 757.0 757.3 758.9 762.7 762.5 758.0 755.7 757.7 MAX. QFE PRESSURE IN HPA 763.0 757.3 760.4 762.8 762.9 761.0 759.4 761.9 767.6 766.3 764.0 760.4 767.6 DAY 10 18 31 29 22 9 13 15 23 10 2 30 MIN. QFE PRESSURE IN HPA 747.2 746.0 747.2 750.2 752.1 752.7 754.2 755.7 759.4 758.4 745.7 743.8 743.8 DAY 26 12 12 3 2 5 8 2 7 16 26 4 MEAN QNH PRESSURE IN HPA 1019.9 1015.8 1019.4 1023.8 1024.1 1021.8 1022.1 1024.2 1029.1 1028.8 1023.1 1020.1 1022.7 MAX. QNH PRESSURE IN HPA 1029.4 1022.2 1026.1 1029.2 1029.3 1026.9 1024.9 1028.0 1035.3 1033.7 1030.7 1026.1 1035.3 DAY 10 18 31 29 22 9 13 15 23 10 2 30 MIN. QNH PRESSURE IN HPA 1009.3 1007.8 1009.3 1013.1 1015.5 1016.3 1018.2 1020.1 1024.9 1023.6 1007.4 1005.0 1005.0 DAY 26 12 12 3 2 5 8 2 7 16 26 4 MEAN QFF PRESSURE IN HPA 1021.5 1019.6 1016.5 1014.4 1011.1 1002.5 998.6 1001.2 1014.7 1020.2 1018.7 1024.8 1013.7 MAX. QFF PRESSURE IN HPA 1032.6 1029.3 1024.4 1027.7 1016.9 1007.5 1005.4 1005.2 1024.9 1026.9 1024.5 1038.1 1038.1 DAY 19 19 18 5 8 1 2 15 23 10 10 8 MIN. QFF PRESSURE IN HPA 1011.2 1005.5 1008.0 1005.1 1006.2 995.8 992.4 995.0 1004.5 1012.6 1005.1 1005.0 992.4 DAY 16 1 12 26 29 22 8 2 2 2 26 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 756.5 753.1 756.2 759.3 759.4 757.4 757.7 759.5 763.5 763.3 759.0 756.5 758.5 MAX. QFE PRESSURE IN HPA 763.5 758.3 761.4 763.5 763.6 761.6 760.0 762.8 768.3 767.2 765.7 761.4 768.3 DAY 10 20 31 5 21 9 13 15 23 10 2 30 MIN. QFE PRESSURE IN HPA 748.1 746.6 748.3 751.5 752.5 753.1 754.6 756.1 759.7 759.6 747.3 744.7 744.7 DAY 26 12 15 3 1 29 8 2 7 16 26 4 MEAN QNH PRESSURE IN HPA 1021.1 1016.9 1020.8 1024.7 1024.8 1022.4 1022.7 1025.0 1030.0 1029.9 1024.3 1021.2 1023.6 MAX. QNH PRESSURE IN HPA 1030.1 1023.5 1027.4 1030.1 1030.2 1027.7 1025.6 1029.2 1036.2 1034.8 1032.9 1027.4 1036.2 DAY 10 20 31 5 21 9 13 15 23 10 2 30 MIN. QNH PRESSURE IN HPA 1010.4 1008.5 1010.7 1014.8 1016.1 1016.8 1018.7 1020.6 1025.2 1025.1 1009.4 1006.1 1006.1 DAY 26 12 15 3 1 29 8 2 7 16 26 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 755.9 752.9 755.9 758.9 759.3 757.2 757.4 759.0 763.0 762.7 758.2 755.9 758.0 MAX. QFE PRESSURE IN HPA 762.7 758.6 761.0 763.9 763.6 761.4 759.7 762.4 768.3 766.8 764.8 760.3 768.3 DAY 10 20 31 5 21 8 13 15 23 10 2 30 MIN. QFE PRESSURE IN HPA 747.8 746.4 747.6 751.0 752.4 752.8 754.6 755.8 759.3 758.8 748.5 743.8 743.8 DAY 26 12 12 2 1 29 8 2 7 15 26 4 MEAN QNH PRESSURE IN HPA 1020.4 1016.6 1020.4 1024.2 1024.8 1022.0 1022.3 1024.4 1029.5 1029.1 1023.4 1020.4 1023.1 MAX. QNH PRESSURE IN HPA 1029.1 1023.8 1026.9 1030.6 1030.2 1027.4 1025.2 1028.7 1036.2 1034.3 1031.7 1026.0 1036.2 DAY 10 20 31 5 21 8 13 15 23 10 2 30 MIN. QNH PRESSURE IN HPA 1010.1 1008.3 1009.8 1014.1 1015.9 1016.4 1018.7 1020.3 1024.7 1024.1 1011.0 1005.0 1005.0 DAY 26 12 12 2 1 29 8 2 7 15 26 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 755.3 752.3 755.0 758.1 758.6 756.4 756.6 758.2 762.3 762.2 757.9 755.5 757.4 MAX. QFE PRESSURE IN HPA 762.5 757.7 760.0 763.3 762.9 760.7 759.0 761.3 768.3 766.0 764.0 759.6 768.3 DAY 9 20 31 5 21 8 13 15 23 10 2 29 MIN. QFE PRESSURE IN HPA 746.6 746.4 747.0 749.6 752.0 752.6 754.4 755.0 758.5 758.4 750.0 743.6 743.6 DAY 16 12 12 2 1 29 7 2 7 2 26 4 MEAN QNH PRESSURE IN HPA 1019.6 1015.8 1019.2 1023.2 1023.9 1021.1 1021.3 1023.3 1028.6 1028.5 1023.0 1019.9 1022.3 MAX. QNH PRESSURE IN HPA 1028.8 1022.7 1025.6 1029.8 1029.3 1026.5 1024.3 1027.3 1036.2 1033.3 1030.7 1025.1 1036.2 DAY 9 20 31 5 21 8 13 15 23 10 2 29 MIN. QNH PRESSURE IN HPA 1008.5 1008.3 1009.0 1012.4 1015.4 1016.2 1018.5 1019.2 1023.7 1023.6 1012.9 1004.7 1004.7 DAY 16 12 12 2 1 29 7 2 7 2 26 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 755.7 752.6 755.3 758.2 758.7 756.3 756.5 758.1 762.5 762.5 758.2 755.9 757.5 MAX. QFE PRESSURE IN HPA 762.9 757.8 760.0 763.5 762.7 760.6 759.0 761.5 768.3 766.4 764.1 760.8 768.3 DAY 9 20 31 5 21 9 13 15 23 10 2 29 MIN. QFE PRESSURE IN HPA 746.6 747.5 747.1 749.7 751.3 752.1 754.1 754.8 758.4 758.6 751.6 743.8 743.8 DAY 16 12 12 2 1 4 8 2 2 2 26 4 MEAN QNH PRESSURE IN HPA 1020.2 1016.2 1019.6 1023.3 1023.9 1020.8 1021.1 1023.1 1028.7 1028.8 1023.3 1020.4 1022.5 MAX. QNH PRESSURE IN HPA 1029.3 1022.8 1025.6 1030.1 1029.1 1026.4 1024.3 1027.5 1036.2 1033.8 1030.8 1026.6 1036.2 DAY 9 20 31 5 21 9 13 15 23 10 2 29 MIN. QNH PRESSURE IN HPA 1008.5 1009.7 1009.2 1012.5 1014.5 1015.5 1018.1 1019.0 1023.6 1023.8 1014.9 1005.0 1005.0 DAY 16 12 12 2 1 4 8 2 2 2 26 4 MEAN QFF PRESSURE IN HPA 1021.7 1020.0 1016.6 1014.0 1010.6 1001.6 997.6 1000.2 1014.5 1020.3 1018.8 1025.1 1013.4 MAX. QFF PRESSURE IN HPA 1032.3 1030.2 1024.1 1030.4 1017.3 1006.7 1003.5 1005.1 1025.3 1026.6 1024.1 1039.6 1039.6 DAY 18 18 17 5 7 6 13 15 23 10 10 7 MIN. QFF PRESSURE IN HPA 1007.1 1012.1 1003.1 1005.0 1005.9 996.7 992.6 994.2 1003.5 1011.8 1010.8 1006.1 992.6 DAY 16 22 7 26 1 25 20 2 2 2 25 3 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 ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.9 -0.7 2.8 7.8 11.9 17.1 24.2 24.4 17.5 10.0 4.5 -4.0 9.6 MINIMUN AIR TEMPERATURE (C) -4.9 -5.1 -1.9 2.9 6.8 10.5 17.1 17.2 11.1 4.6 0.4 -7.2 4.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 0 0 0 0 0 2 DAYS WITH MINIMUM TEMP. <=-4 22 18 6 0 0 0 0 0 0 0 6 30 82 DAYS WITH FREEZING MIN.<= 0 30 28 26 5 0 0 0 0 0 3 13 31 136 TEMPERATURE RECORDS LOWEST(C) -9.8 -14.0 -6.0 -1.6 1.0 6.0 11.8 14.0 3.0 -0.4 -9.6 -12.2 -14.0 DAY 23 24 27 7 9 1 1 24 22 20 26 20 MAXIMUM AIR TEMPERATURE (C) 2.2 2.2 6.2 11.2 15.2 20.2 27.7 27.6 21.1 13.5 9.2 0.1 13.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 8 1 0 0 0 0 9 DAYS WITH MAXIMUM TEMP. <= 0 6 7 0 0 0 0 0 0 0 0 0 15 28 TEMPERATURE RECORDS HIGHEST(C) 8.5 6.5 11.8 16.8 19.4 25.0 31.4 30.0 25.2 20.2 14.6 5.4 31.4 DAY 4 22 25 3 21 22 16 6 9 3 2 30 DIF. BETWEEN (MAX.-MIN.) (C) 7.1 7.3 8.1 8.3 8.4 9.7 10.6 10.4 10.0 8.9 8.8 7.3 8.7 MEAN DAILY TEMP. (MDT) (C) -1.4 -1.4 2.1 7.1 11.0 15.4 22.4 22.4 16.1 9.1 4.8 -3.6 8.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.0 58.9 45.6 0.0 0.0 0.0 0.0 104.6 HEATING DEG. DAYS(BASE 18 0C) 600.5 544.4 491.7 327.9 217.0 81.3 0.8 0.0 66.9 277.3 395.8 668.6 3672.4 DEWPOINT (MEAN C) -7.9 -6.4 -6.6 -1.7 2.1 5.4 4.6 1.5 -1.3 -4.5 -9.7 -9.1 -2.8 MIXING RATIO (G/KG) 2.94 3.28 3.28 4.74 6.07 7.52 7.28 5.80 4.67 3.75 2.64 2.65 4.55 VAPOUR PRESSURE (HPA) 3.56 3.96 3.96 5.71 7.34 9.05 8.75 7.01 5.66 4.56 3.20 3.21 5.50 SATURATION DEF. (HPA) 2.28 1.95 3.69 5.11 6.90 10.85 22.02 23.94 14.91 8.21 5.74 1.44 8.92 RELATIVE HUMIDITY (MEAN %) 62 68 55 56 54 47 31 24 30 41 37 71 48 RELATIVE HUMIDITY (MAX. %) 79 80 69 70 67 60 42 32 42 53 52 83 61 RELATIVE HUMIDITY (MIN. %) 51 56 43 44 44 38 23 19 23 31 26 55 38 RELATIVE HUMIDITY (MEAN% 03UTC) 60 72 66 67 62 58 42 32 40 51 47 70 56 RELATIVE HUMIDITY (MEAN% 09UTC) 56 64 50 54 49 44 28 21 25 34 29 63 43 RELATIVE HUMIDITY (MEAN% 15UTC) 74 72 55 52 57 46 28 23 31 45 41 79 50 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 36.3 32.3 50.6 83.5 63.7 32.2 1.2 0.0 4.4 18.0 3.0 42.7 367.9 DAYS WITH PRECIPITATION >=10 1 1 2 2 2 1 0 0 0 1 0 1 11 DAYS WITH PRECIPITATION >= 5 3 1 4 4 4 2 0 0 0 1 0 4 23 DAYS WITH PRECIPITATION >= 1 5 8 8 12 12 6 1 0 3 1 1 8 65 DAYS WITH PRECIPITATION 8 13 11 16 16 8 3 0 4 1 3 12 95 GREATEST DAILY PRECIPITATION 15.0 14.0 16.0 30.0 18.0 19.0 1.0 0.0 2.0 18.0 3.0 12.7 30.0 DAY 17 5 18 24 28 6 6 ** 16 25 11 19 DAY WITH THUNDER STORM 1 0 3 1 6 5 1 0 2 0 0 0 19 DAYS WITH SNOW OR SLEET 6 10 9 2 0 0 0 0 0 0 0 11 38 DAYS WITH DUST 0 0 0 1 0 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 225 225 225 225 225 225 225 225 225 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 7.8 7.4 7.8 8.4 7.8 7.5 6.8 7.4 7.6 8.3 9.4 7.6 7.9 PREVAILING WIND PERCENT 19.4 33.6 33.5 36.7 18.7 22.7 24.5 36.1 40.3 32.9 29.1 6.0 26.7 CALMS PERCENT OF WIND 68.4 53.6 45.2 42.0 36.8 36.7 31.0 33.5 29.5 40.0 53.6 90.3 48.9 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 149 155 179 248 1946 VECTOR WIND DIRECTION (MEAN) 233 254 248 242 309 261 235 230 237 242 239 245 244 VECTOR WIND MAGNITUDE(KNOTS) 1.6 1.3 2.4 3.4 1.9 1.7 2.1 3.7 4.2 3.1 3.1 0.4 2.3 WIND STEADINESES (MEAN %) 66.7 29.5 53.3 69.4 32.2 34.0 44.7 77.1 76.4 57.4 70.5 57.1 52.3 WIND SPEED (MEAN KNOTS) 2.4 4.4 4.5 4.9 5.9 5.0 4.7 4.8 5.5 5.4 4.4 0.7 4.4 FASTEST WIND DIRECTION 240 10 240 360 360 360 260 10 360 360 250 220 10 FASTEST WIND SPEED (KNOTS) 16 51 19 23 27 39 16 19 33 33 31 14 51 DAY 19 24 26 6 22 23 9 31 21 13 10 2 DAYS WITH SKY CLEAR (0-2)/8 23 13 17 6 11 22 27 30 28 21 20 14 232 DAYS WITH P.CLOUDY (3-6)/8 4 8 7 12 13 4 4 1 1 7 8 8 77 DAYS WITH CLOUDY (7-8)/8 4 7 7 12 7 4 0 0 1 3 2 9 56 DAYS WITH VISIBILITY =< 2 KM 3 7 3 2 2 0 0 0 0 0 0 9 26 DURATION OF SUNSHINE HOURS 210.8 164.7 223.4 187.6 228.6 247.5 338.9 352.2 307.3 281.8 249.5 142.6 2934.9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 757.0 754.9 755.6 756.5 760.0 757.8 756.8 759.9 760.2 761.3 758.7 757.1 758.0 MAX. QFE PRESSURE IN HPA 764.0 760.7 762.4 761.3 764.2 761.9 760.0 764.2 766.6 767.3 764.7 761.3 767.3 DAY-HOUR 7- 6 1- 6 3- 6 12- 6 26- 9 9- 6 28- 9 25- 6 13- 6 25- 6 16- 6 30- 6 MIN. QFE PRESSURE IN HPA 751.3 748.0 746.8 751.2 755.0 752.1 752.6 755.7 755.9 756.1 746.5 752.8 746.5 DAY-HOUR 1-12 5-12 27- 3 25- 3 9- 3 22-15 1-15 22-15 19-12 12-12 26- 3 4-12 MEAN QNH PRESSURE IN HPA 1021.8 1019.2 1020.0 1021.2 1025.6 1022.8 1021.5 1025.4 1025.9 1027.3 1023.9 1021.9 1023.0 MAX. QNH PRESSURE IN HPA 1030.7 1026.5 1028.7 1027.3 1031.0 1028.0 1025.6 1031.0 1034.0 1034.9 1031.6 1027.3 1034.9 DAY-HOUR 7- 6 1- 6 3- 6 12- 6 26- 9 9- 6 28- 9 25- 6 13- 6 25- 6 16- 6 30- 6 MIN. QNH PRESSURE IN HPA 1014.5 1010.3 1008.8 1014.4 1019.2 1015.5 1016.2 1020.1 1020.4 1020.6 1008.4 1016.4 1008.4 DAY-HOUR 1-12 5-12 27- 3 25- 3 9- 3 22-15 1-15 22-15 19-12 12-12 26- 3 4-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1025.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1033.4 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 10- 6 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1018.5 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 25-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 756.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 760.0 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 754.1 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 17 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.7 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1025.6 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1018.1 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 17 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1024.9 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1032.6 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 11 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1019.6 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 26 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 756.7 754.7 755.2 756.5 759.7 757.9 756.9 760.0 760.2 761.2 758.8 756.9 757.9 MAX. QFE PRESSURE IN HPA 762.8 759.8 761.3 759.8 763.0 761.3 759.5 763.3 765.8 766.8 764.2 760.0 766.8 DAY 7 1 3 12 26 9 29 25 13 25 16 10 MIN. QFE PRESSURE IN HPA 752.0 749.2 746.8 751.2 755.0 754.4 753.3 756.4 756.1 756.7 746.5 753.7 746.5 DAY 12 5 27 25 9 23 2 23 19 13 26 17 MEAN QNH PRESSURE IN HPA 1021.4 1018.9 1019.5 1021.1 1025.2 1022.9 1021.6 1025.6 1025.9 1027.1 1024.1 1021.7 1022.9 MAX. QNH PRESSURE IN HPA 1029.2 1025.4 1027.3 1025.4 1029.4 1027.3 1025.0 1029.8 1033.0 1034.3 1031.0 1025.6 1034.3 DAY 7 1 3 12 26 9 29 25 13 25 16 10 MIN. QNH PRESSURE IN HPA 1015.4 1011.8 1008.8 1014.4 1019.2 1018.5 1017.1 1021.0 1020.6 1021.4 1008.4 1017.6 1008.4 DAY 12 5 27 25 9 23 2 23 19 13 26 17 MEAN QFF PRESSURE IN HPA 1023.3 1020.0 1017.1 1013.1 1013.0 1005.4 997.9 1002.1 1009.1 1018.0 1019.8 1026.1 1013.7 MAX. QFF PRESSURE IN HPA 1032.1 1025.7 1027.3 1020.7 1019.4 1014.7 1003.2 1006.3 1021.8 1029.2 1031.5 1031.7 1032.1 DAY 7 14 3 7 26 1 4 25 22 26 28 10 MIN. QFF PRESSURE IN HPA 1015.4 1008.3 1002.8 1008.1 1007.6 997.0 992.9 996.6 1002.7 1009.0 1009.7 1020.7 992.9 DAY 17 5 26 25 7 22 11 23 19 12 26 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 757.7 755.6 756.2 757.1 760.5 758.3 757.3 760.6 760.9 762.0 759.8 757.7 758.6 MAX. QFE PRESSURE IN HPA 764.0 760.7 762.4 761.3 764.0 761.9 760.0 764.2 766.6 767.3 764.7 761.3 767.3 DAY 7 1 3 12 26 9 29 25 13 25 16 30 MIN. QFE PRESSURE IN HPA 753.1 748.7 748.7 751.7 755.9 754.5 753.4 757.3 756.8 757.9 748.8 754.4 748.7 DAY 12 5 27 25 9 22 2 23 20 12 26 16 MEAN QNH PRESSURE IN HPA 1022.7 1020.0 1020.8 1021.9 1026.2 1023.4 1022.2 1026.3 1026.7 1028.1 1025.3 1022.7 1023.9 MAX. QNH PRESSURE IN HPA 1030.7 1026.5 1028.7 1027.3 1030.7 1028.0 1025.6 1031.0 1034.0 1034.9 1031.6 1027.3 1034.9 DAY 7 1 3 12 26 9 29 25 13 25 16 30 MIN. QNH PRESSURE IN HPA 1016.8 1011.2 1011.2 1015.0 1020.4 1018.6 1017.2 1022.2 1021.5 1022.9 1011.3 1018.5 1011.2 DAY 12 5 27 25 9 22 2 23 20 12 26 16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1026.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1033.4 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.2 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 27 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 757.1 755.3 756.0 756.8 760.3 758.1 757.1 760.2 760.5 761.4 759.0 757.1 758.3 MAX. QFE PRESSURE IN HPA 763.2 760.3 762.0 761.1 764.2 761.6 760.0 763.7 765.9 766.7 764.0 760.7 766.7 DAY 7 1 3 12 26 9 28 25 13 25 16 30 MIN. QFE PRESSURE IN HPA 751.9 748.5 748.1 751.9 756.1 753.9 753.3 757.3 756.0 757.0 749.4 753.8 748.1 DAY 1 5 26 25 9 22 2 23 20 12 26 4 MEAN QNH PRESSURE IN HPA 1021.9 1019.6 1020.6 1021.6 1026.0 1023.2 1021.9 1025.9 1026.2 1027.5 1024.3 1021.9 1023.4 MAX. QNH PRESSURE IN HPA 1029.7 1026.0 1028.2 1027.0 1031.0 1027.7 1025.6 1030.3 1033.1 1034.2 1030.7 1026.5 1034.2 DAY 7 1 3 12 26 9 28 25 13 25 16 30 MIN. QNH PRESSURE IN HPA 1015.3 1011.0 1010.4 1015.3 1020.6 1017.8 1017.1 1022.2 1020.5 1021.8 1012.1 1017.7 1010.4 DAY 1 5 26 25 9 22 2 23 20 12 26 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1024.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1033.1 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.0 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 25 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 756.5 754.4 755.2 756.2 759.8 757.5 756.6 759.4 759.7 760.9 758.6 756.6 757.6 MAX. QFE PRESSURE IN HPA 762.8 760.0 761.3 760.1 763.8 761.1 759.7 762.5 765.1 766.3 763.3 760.3 766.3 DAY 7 1 3 12 26 2 31 25 13 25 15 10 MIN. QFE PRESSURE IN HPA 751.3 748.0 747.7 751.7 755.8 753.0 752.8 756.6 755.9 756.1 750.3 752.8 747.7 DAY 1 5 26 17 9 22 2 22 19 12 26 4 MEAN QNH PRESSURE IN HPA 1021.2 1018.5 1019.5 1020.7 1025.4 1022.4 1021.2 1024.9 1025.3 1026.7 1023.8 1021.3 1022.6 MAX. QNH PRESSURE IN HPA 1029.2 1025.6 1027.3 1025.7 1030.5 1027.0 1025.2 1028.8 1032.1 1033.7 1029.8 1026.0 1033.7 DAY 7 1 3 12 26 2 31 25 13 25 15 10 MIN. QNH PRESSURE IN HPA 1014.5 1010.3 1009.9 1015.0 1020.3 1016.7 1016.4 1021.3 1020.4 1020.6 1013.2 1016.4 1009.9 DAY 1 5 26 17 9 22 2 22 19 12 26 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1024.3 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1032.9 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1018.5 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 757.0 754.7 755.5 756.2 759.6 757.2 756.3 759.2 759.8 761.0 759.0 757.0 757.7 MAX. QFE PRESSURE IN HPA 763.1 760.3 761.1 760.1 763.4 760.5 759.4 762.0 764.8 766.3 764.5 760.4 766.3 DAY 7 1 3 12 21 1 31 25 13 25 15 10 MIN. QFE PRESSURE IN HPA 751.3 748.4 747.7 751.7 756.1 752.1 752.6 755.7 755.9 756.1 749.7 753.9 747.7 DAY 1 23 26 17 9 22 1 22 20 12 25 16 MEAN QNH PRESSURE IN HPA 1021.8 1018.9 1019.8 1020.7 1025.1 1022.1 1020.8 1024.6 1025.3 1026.9 1024.4 1021.8 1022.7 MAX. QNH PRESSURE IN HPA 1029.6 1026.0 1027.0 1025.7 1030.0 1026.3 1024.9 1028.2 1031.7 1033.7 1031.4 1026.1 1033.7 DAY 7 1 3 12 21 1 31 25 13 25 15 10 MIN. QNH PRESSURE IN HPA 1014.5 1010.8 1009.9 1015.0 1020.6 1015.5 1016.2 1020.1 1020.4 1020.6 1012.5 1017.8 1009.9 DAY 1 23 26 17 9 22 1 22 20 12 25 16 MEAN QFF PRESSURE IN HPA 1023.5 1020.0 1017.2 1012.6 1012.8 1004.3 997.2 1001.1 1008.7 1017.8 1020.3 1026.0 1013.5 MAX. QFF PRESSURE IN HPA 1032.4 1026.1 1026.7 1018.2 1018.6 1011.9 1001.3 1005.9 1017.1 1029.4 1030.5 1032.5 1032.5 DAY 7 25 3 7 26 1 4 24 22 25 27 18 MIN. QFF PRESSURE IN HPA 1016.0 1007.8 1006.1 1007.1 1007.5 994.8 990.8 995.6 1003.9 1006.7 1009.0 1020.9 990.8 DAY 11 5 26 16 5 22 16 22 19 12 11 25 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 757.3 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 760.8 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 754.4 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 16 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1022.2 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1026.6 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1018.5 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1025.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1032.5 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.4 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 4 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 757.2 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 760.7 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 754.1 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 16 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1022.1 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1026.5 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1018.1 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1024.9 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1032.4 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 9 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.4 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -5.7 -2.4 -2.2 4.8 12.2 17.3 19.2 20.1 17.8 9.0 2.6 1.5 7.9 MINIMUN AIR TEMPERATURE (C) -8.7 -5.7 -5.3 1.1 7.9 12.4 14.8 15.5 12.6 5.0 -1.4 -3.0 3.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 25 22 22 4 0 0 0 0 0 0 8 14 95 DAYS WITH FREEZING MIN.<= 0 31 27 30 8 0 0 0 0 0 0 18 26 140 TEMPERATURE RECORDS LOWEST(C) -15.0 -12.0 -10.6 -6.6 4.0 9.4 10.5 12.0 6.8 0.2 -8.6 -7.6 -15.0 DAY 15 22 1 5 9 13 15 30 24 17 12 24 MAXIMUM AIR TEMPERATURE (C) -1.1 1.6 1.8 8.7 16.4 21.8 23.7 25.2 23.0 14.2 7.6 5.2 12.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MAXIMUM TEMP. <= 0 18 12 6 1 0 0 0 0 0 0 0 0 37 TEMPERATURE RECORDS HIGHEST(C) 4.5 8.2 7.2 14.4 22.4 25.6 26.4 28.0 26.4 18.6 13.0 10.0 28.0 DAY 3 9 31 30 31 4 10 22 11 1 6 5 DIF. BETWEEN (MAX.-MIN.) (C) 7.6 7.3 7.1 7.6 8.5 9.4 8.9 9.7 10.4 9.2 9.0 8.2 8.5 MEAN DAILY TEMP. (MDT) (C) -4.9 -2.1 -1.7 4.9 12.1 17.1 19.3 20.4 17.8 9.6 3.1 1.1 8.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.3 0.7 12.2 0.3 0.0 0.0 0.0 13.5 HEATING DEG. DAYS(BASE 18 0C) 710.4 581.7 612.1 392.5 181.4 39.9 5.6 2.7 34.4 260.9 447.9 524.6 3794.0 DEWPOINT (MEAN C) -10.8 -7.0 -6.6 -2.7 2.3 2.6 3.1 0.6 -1.2 -2.3 -7.0 -5.9 -2.9 MIXING RATIO (G/KG) 2.36 3.14 3.22 4.32 6.07 6.39 6.46 5.56 4.85 4.39 3.07 3.31 4.43 VAPOUR PRESSURE (HPA) 2.85 3.79 3.87 5.22 7.34 7.71 7.82 6.73 5.87 5.34 3.74 4.02 5.36 SATURATION DEF. (HPA) 1.34 1.45 1.48 3.65 7.31 12.43 14.67 17.30 15.09 6.51 3.95 2.97 7.34 RELATIVE HUMIDITY (MEAN %) 69 74 73 62 54 41 36 30 30 48 51 60 52 RELATIVE HUMIDITY (MAX. %) 83 87 86 79 70 57 48 41 46 65 64 72 67 RELATIVE HUMIDITY (MIN. %) 55 59 59 45 41 29 26 20 21 33 39 50 40 RELATIVE HUMIDITY (MEAN% 03UTC) 64 73 74 70 61 47 40 36 36 54 58 65 57 RELATIVE HUMIDITY (MEAN% 09UTC) 64 71 70 55 49 35 30 24 24 40 43 55 47 RELATIVE HUMIDITY (MEAN% 15UTC) 78 80 75 60 49 34 33 25 29 51 56 66 53 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 47.8 128.2 216.3 132.6 89.2 49.8 3.3 0.6 0.0 15.4 1.3 36.2 720.7 DAYS WITH PRECIPITATION >=10 2 4 7 4 3 3 0 0 0 1 0 1 25 DAYS WITH PRECIPITATION >= 5 3 6 14 8 7 3 0 0 0 1 0 3 45 DAYS WITH PRECIPITATION >= 1 7 14 16 14 12 5 1 0 0 4 0 5 78 DAYS WITH PRECIPITATION 13 16 22 19 15 7 8 2 0 7 3 5 117 GREATEST DAILY PRECIPITATION 16.0 48.0 46.0 38.0 22.5 17.0 2.0 0.6 0.0 12.0 1.0 16.0 48.0 DAY 6 2 13 3 8 28 10 30 ** 16 12 22 DAY WITH THUNDER STORM 0 0 0 6 10 7 4 2 0 2 0 0 31 DAYS WITH SNOW OR SLEET 14 17 17 6 0 0 0 0 0 2 2 4 62 DAYS WITH DUST 0 1 0 0 0 0 0 0 4 0 0 0 5 WIND DIRECTION (PREVAILING) 225 270 270 225 270 270 360 225 225 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 6.5 8.3 9.5 9.7 8.5 10.1 17.2 7.0 7.9 7.8 6.1 6.1 7.8 PREVAILING WIND PERCENT 4.0 6.9 9.7 21.3 19.0 13.3 22.6 14.9 21.7 18.5 12.9 10.3 12.7 CALMS PERCENT OF WIND 87.5 79.3 72.6 50.0 55.2 42.1 38.3 55.2 64.2 67.3 76.2 85.2 63.6 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 210 155 2805 VECTOR WIND DIRECTION (MEAN) 7 345 331 268 267 267 360 286 240 243 282 227 294 VECTOR WIND MAGNITUDE(KNOTS) 1.0 1.2 1.3 2.3 2.3 1.0 4.2 1.0 2.3 1.6 0.3 0.8 1.0 WIND STEADINESES (MEAN %) 62.5 44.4 40.6 43.4 57.5 20.8 59.2 23.8 79.3 55.2 13.6 88.9 28.6 WIND SPEED (MEAN KNOTS) 1.6 2.7 3.2 5.3 4.0 4.8 7.1 4.2 2.9 2.9 2.2 0.9 3.5 FASTEST WIND DIRECTION 10 10 360 20 360 360 10 10 30 250 10 270 10 FASTEST WIND SPEED (KNOTS) 33 39 31 39 25 23 31 27 23 23 29 16 39 DAY 12 22 14 3 1 16 11 3 7 14 11 17 DAYS WITH SKY CLEAR (0-2)/8 13 5 5 7 8 20 16 25 29 19 16 12 175 DAYS WITH P.CLOUDY (3-6)/8 8 13 15 13 15 7 14 6 1 11 12 15 130 DAYS WITH CLOUDY (7-8)/8 10 11 11 10 8 3 1 0 0 1 2 4 61 DAYS WITH VISIBILITY =< 2 KM 11 15 16 6 0 1 0 0 2 0 2 2 55 DURATION OF SUNSHINE HOURS 149.9 140.1 138.9 199.5 265.6 317.3 319.5 335.2 311.3 258.3 219.8 195.5 2850.9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 755.6 753.9 752.7 757.0 759.7 758.7 760.3 760.6 759.7 761.0 761.5 759.0 758.3 MAX. QFE PRESSURE IN HPA 761.5 759.9 758.4 761.1 763.8 761.8 765.2 766.0 765.9 768.5 768.0 765.0 768.5 DAY-HOUR 2- 6 8-18 31- 6 23- 9 17-18 3- 6 3- 6 29-21 25- 6 2- 6 18- 6 8- 6 MIN. QFE PRESSURE IN HPA 748.4 742.4 746.9 750.5 756.9 755.0 755.0 755.8 753.3 753.7 756.3 753.6 742.4 DAY-HOUR 17-12 5-12 13-12 11- 0 20- 0 6- 3 6-15 8-12 22- 0 27-12 29- 3 24-15 MEAN QNH PRESSURE IN HPA 1020.0 1017.9 1016.3 1021.8 1025.3 1024.0 1026.0 1026.3 1025.2 1026.9 1027.5 1024.3 1023.5 MAX. QNH PRESSURE IN HPA 1027.5 1025.5 1023.6 1027.0 1030.5 1027.9 1032.2 1033.3 1033.1 1036.5 1035.8 1032.0 1036.5 DAY-HOUR 2- 6 8-18 31- 6 23- 9 17-18 3- 6 3- 6 29-21 25- 6 2- 6 18- 6 8- 6 MIN. QNH PRESSURE IN HPA 1010.8 1003.2 1008.9 1013.5 1021.7 1019.2 1019.2 1020.3 1017.1 1017.6 1020.9 1017.5 1003.2 DAY-HOUR 17-12 5-12 13-12 11- 0 20- 0 6- 3 6-15 8-12 22- 0 27-12 29- 3 24-15 MEAN QFF PRESSURE IN HPA 1025.0 1019.1 1017.2 1015.4 1011.1 1004.7 1005.1 1004.6 1005.8 1016.1 1024.7 ****** ****** MAX. QFF PRESSURE IN HPA 1034.8 1029.0 1023.6 1028.9 1018.0 1012.1 1010.6 1015.2 1017.3 1027.6 1038.8 ****** ****** DAY-HOUR 10- 6 13-21 6- 6 4-18 7- 3 26-21 3-15 30- 0 25- 6 19- 3 18-15 **-** MIN. QFF PRESSURE IN HPA 1013.1 1005.6 1007.3 1006.4 1003.4 997.3 997.1 997.3 998.9 1005.2 1014.6 ****** ****** DAY-HOUR 6-15 11- 0 26- 0 13- 6 29- 0 5-12 7-12 8-12 18-21 27-12 7- 0 **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 755.4 753.4 752.3 756.5 759.3 758.3 760.0 760.3 759.5 760.7 761.7 ****** ****** MAX. QFE PRESSURE IN HPA 761.0 758.1 757.6 760.0 763.4 760.3 764.9 764.5 764.4 767.6 767.3 ****** ****** DAY 3 20 31 24 18 4 4 30 26 2 19 ** MIN. QFE PRESSURE IN HPA 749.3 744.8 747.6 750.5 756.9 755.0 755.5 756.4 753.3 755.1 758.4 ****** ****** DAY 18 6 14 11 20 19 7 8 22 28 2 ** MEAN QNH PRESSURE IN HPA 1019.7 1017.2 1015.8 1021.1 1024.7 1023.5 1025.6 1026.0 1025.0 1026.5 1027.8 ****** ****** MAX. QNH PRESSURE IN HPA 1026.9 1023.2 1022.6 1025.6 1030.0 1026.0 1031.9 1031.4 1031.2 1035.3 1034.9 ****** ****** DAY 3 20 31 24 18 4 4 30 26 2 19 ** MIN. QNH PRESSURE IN HPA 1012.0 1006.2 1009.8 1013.5 1021.7 1019.2 1019.9 1021.0 1017.1 1019.4 1023.6 ****** ****** DAY 18 6 14 11 20 19 7 8 22 28 2 ** MEAN QFF PRESSURE IN HPA 1024.6 1018.0 1016.7 1014.4 1010.5 1004.2 1004.6 1004.0 1004.9 1014.9 1023.9 ****** ****** MAX. QFF PRESSURE IN HPA 1033.0 1026.8 1021.7 1027.2 1017.2 1010.4 1009.9 1015.2 1014.8 1026.3 1036.9 ****** ****** DAY 26 14 18 5 7 17 4 30 25 19 18 ** MIN. QFF PRESSURE IN HPA 1016.1 1005.6 1007.3 1006.7 1003.4 998.6 997.5 998.5 999.5 1006.9 1014.6 ****** ****** DAY 7 11 26 10 29 5 7 9 19 27 7 ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 755.3 753.4 752.3 756.7 759.5 758.8 760.4 760.7 759.7 760.9 761.1 758.8 758.1 MAX. QFE PRESSURE IN HPA 760.4 758.1 757.8 760.2 762.4 760.9 764.9 764.7 764.7 767.5 767.0 764.3 767.5 DAY 10 20 31 24 18 3 4 30 26 2 19 8 MIN. QFE PRESSURE IN HPA 749.0 744.4 748.1 750.7 757.4 755.0 755.5 756.7 753.5 755.3 756.3 753.8 744.4 DAY 19 5 14 10 1 6 7 8 22 27 29 23 MEAN QNH PRESSURE IN HPA 1019.6 1017.3 1015.9 1021.4 1025.0 1024.1 1026.2 1026.5 1025.3 1026.7 1027.0 1024.1 1023.2 MAX. QNH PRESSURE IN HPA 1026.1 1023.2 1022.8 1025.9 1028.7 1026.8 1031.9 1031.6 1031.6 1035.2 1034.5 1031.1 1035.2 DAY 10 20 31 24 18 3 4 30 26 2 19 8 MIN. QNH PRESSURE IN HPA 1011.6 1005.7 1010.4 1013.8 1022.3 1019.2 1019.9 1021.4 1017.3 1019.6 1020.9 1017.7 1005.7 DAY 19 5 14 10 1 6 7 8 22 27 29 23 MEAN QFF PRESSURE IN HPA 1025.7 1019.3 1017.6 1015.7 1011.2 1004.8 1005.7 1005.2 1007.1 1017.4 1025.2 1023.9 1014.9 MAX. QFF PRESSURE IN HPA 1034.1 1027.4 1023.3 1025.7 1018.0 1010.9 1010.6 1014.8 1017.2 1027.6 1037.8 1031.8 1037.8 DAY 10 14 1 5 7 12 4 30 25 19 18 3 MIN. QFF PRESSURE IN HPA 1017.1 1008.1 1007.9 1007.9 1004.3 998.9 998.6 999.1 1001.6 1007.8 1017.4 1017.4 998.6 DAY 5 11 26 13 29 5 7 8 19 27 7 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 756.3 754.5 753.1 757.5 760.2 759.4 760.9 761.2 760.5 761.6 761.9 759.7 758.9 MAX. QFE PRESSURE IN HPA 761.5 759.2 758.4 760.9 763.6 761.8 765.2 765.5 765.9 768.5 768.0 765.0 768.5 DAY 2 20 31 8 17 3 3 29 25 2 18 8 MIN. QFE PRESSURE IN HPA 750.1 743.9 748.3 751.1 758.0 755.6 756.1 757.1 754.3 755.5 756.8 754.4 743.9 DAY 19 5 13 10 29 6 7 8 22 27 29 25 MEAN QNH PRESSURE IN HPA 1020.8 1018.6 1016.8 1022.4 1025.9 1024.8 1026.7 1027.2 1026.2 1027.7 1028.0 1025.2 1024.2 MAX. QNH PRESSURE IN HPA 1027.5 1024.6 1023.6 1026.8 1030.2 1027.9 1032.2 1032.6 1033.1 1036.5 1035.8 1032.0 1036.5 DAY 2 20 31 8 17 3 3 29 25 2 18 8 MIN. QNH PRESSURE IN HPA 1013.0 1005.1 1010.7 1014.3 1023.1 1020.0 1020.6 1021.9 1018.3 1019.9 1021.5 1018.5 1005.1 DAY 19 5 13 10 29 6 7 8 22 27 29 25 MEAN QFF PRESSURE IN HPA 1026.2 1019.9 1017.6 1015.9 1011.8 1005.8 1006.1 1005.8 1007.0 1016.9 1025.6 ****** ****** MAX. QFF PRESSURE IN HPA 1034.8 1027.9 1023.6 1027.3 1017.2 1011.6 1009.9 1013.3 1017.3 1026.7 1037.6 ****** ****** DAY 10 13 6 5 7 27 22 30 25 19 18 ** MIN. QFF PRESSURE IN HPA 1017.6 1009.3 1009.3 1006.4 1005.8 999.6 999.3 1000.2 1001.6 1007.6 1016.6 ****** ****** DAY 6 5 13 13 29 19 7 8 19 27 3 ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 755.7 754.2 753.1 757.5 760.0 759.1 760.6 760.9 760.0 761.2 761.4 759.0 758.6 MAX. QFE PRESSURE IN HPA 760.7 758.9 758.4 761.1 763.6 761.8 765.2 765.2 765.2 768.0 767.6 764.1 768.0 DAY 10 24 31 23 17 3 3 29 25 2 18 8 MIN. QFE PRESSURE IN HPA 749.5 742.7 748.1 751.3 757.5 755.4 755.7 756.6 754.1 755.1 756.5 754.1 742.7 DAY 19 5 13 10 1 6 7 8 20 27 29 25 MEAN QNH PRESSURE IN HPA 1020.1 1018.3 1016.8 1022.4 1025.7 1024.5 1026.4 1026.8 1025.6 1027.2 1027.4 1024.3 1023.8 MAX. QNH PRESSURE IN HPA 1026.5 1024.2 1023.6 1027.0 1030.2 1027.9 1032.2 1032.2 1032.2 1035.8 1035.3 1030.8 1035.8 DAY 10 24 31 23 17 3 3 29 25 2 18 8 MIN. QNH PRESSURE IN HPA 1012.2 1003.5 1010.4 1014.5 1022.4 1019.8 1020.1 1021.3 1018.1 1019.4 1021.2 1018.1 1003.5 DAY 19 5 13 10 1 6 7 8 20 27 29 25 MEAN QFF PRESSURE IN HPA 1024.0 1018.8 1017.3 1015.5 1011.2 1005.2 1005.0 1004.7 1005.5 1015.6 1024.2 ****** ****** MAX. QFF PRESSURE IN HPA 1032.4 1027.6 1021.9 1026.4 1016.4 1010.3 1008.3 1013.1 1015.2 1025.0 1036.2 ****** ****** DAY 10 13 1 4 7 27 3 30 25 19 18 ** MIN. QFF PRESSURE IN HPA 1016.0 1005.9 1008.9 1007.8 1006.4 999.8 997.9 998.7 999.7 1006.7 1015.9 ****** ****** DAY 6 5 13 10 29 19 7 8 19 27 3 ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 755.2 753.6 752.4 756.8 759.4 758.4 759.9 760.1 759.3 760.5 760.8 758.5 757.9 MAX. QFE PRESSURE IN HPA 760.2 758.3 757.3 760.9 763.2 761.0 764.8 764.7 764.4 767.1 766.7 763.2 767.1 DAY 2 8 31 23 17 3 3 29 25 2 18 8 MIN. QFE PRESSURE IN HPA 748.4 742.4 746.9 750.7 757.0 755.1 755.3 755.8 753.4 753.7 756.5 753.6 742.4 DAY 17 5 13 10 29 19 6 8 20 27 29 25 MEAN QNH PRESSURE IN HPA 1019.4 1017.5 1015.9 1021.6 1024.8 1023.6 1025.5 1025.7 1024.7 1026.3 1026.6 1023.7 1022.9 MAX. QNH PRESSURE IN HPA 1025.9 1023.5 1022.2 1026.8 1029.7 1026.9 1031.7 1031.6 1031.2 1034.7 1034.2 1029.7 1034.7 DAY 2 8 31 23 17 3 3 29 25 2 18 8 MIN. QNH PRESSURE IN HPA 1010.8 1003.2 1008.9 1013.8 1021.8 1019.4 1019.6 1020.3 1017.2 1017.6 1021.2 1017.5 1003.2 DAY 17 5 13 10 29 19 6 8 20 27 29 25 MEAN QFF PRESSURE IN HPA 1024.2 1018.2 1016.5 1014.8 1010.5 1004.2 1004.4 1003.7 1004.7 1014.9 1023.8 ****** ****** MAX. QFF PRESSURE IN HPA 1032.2 1026.8 1021.8 1025.6 1015.1 1009.7 1010.1 1013.9 1014.6 1024.3 1034.8 ****** ****** DAY 9 13 17 4 6 16 4 29 25 18 18 ** MIN. QFF PRESSURE IN HPA 1013.2 1006.6 1007.9 1006.5 1003.7 997.3 997.1 997.3 999.8 1005.2 1014.9 ****** ****** DAY 6 5 13 13 29 5 7 8 18 27 3 ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 755.5 753.9 752.7 756.8 759.4 758.2 759.8 760.0 759.2 760.8 761.2 758.9 758.0 MAX. QFE PRESSURE IN HPA 760.3 759.4 757.3 760.7 763.2 760.9 765.0 764.5 764.6 767.1 767.2 763.8 767.2 DAY 9 8 31 23 17 3 3 29 25 2 18 7 MIN. QFE PRESSURE IN HPA 749.4 743.1 747.8 751.1 757.2 755.1 755.0 756.1 753.4 754.1 756.9 753.6 743.1 DAY 17 5 13 10 1 19 6 8 21 27 28 24 MEAN QNH PRESSURE IN HPA 1019.9 1017.9 1016.3 1021.6 1024.9 1023.4 1025.4 1025.6 1024.6 1026.7 1027.1 1024.2 1023.1 MAX. QNH PRESSURE IN HPA 1026.0 1024.9 1022.2 1026.5 1029.7 1026.8 1032.0 1031.4 1031.5 1034.7 1034.8 1030.5 1034.8 DAY 9 8 31 23 17 3 3 29 25 2 18 7 MIN. QNH PRESSURE IN HPA 1012.1 1004.1 1010.1 1014.3 1022.0 1019.4 1019.2 1020.6 1017.2 1018.1 1021.7 1017.5 1004.1 DAY 17 5 13 10 1 19 6 8 21 27 28 24 MEAN QFF PRESSURE IN HPA 1026.0 1019.9 1017.8 1015.8 1010.9 1004.1 1004.8 1004.4 1006.4 1017.4 1025.3 1023.9 1014.7 MAX. QFF PRESSURE IN HPA 1034.1 1027.2 1022.3 1027.5 1016.4 1009.2 1010.6 1013.5 1016.6 1027.0 1038.8 1032.1 1038.8 DAY 9 22 28 4 6 27 3 29 25 18 18 3 MIN. QFF PRESSURE IN HPA 1013.1 1008.8 1009.3 1006.5 1004.2 997.5 998.3 997.9 1001.0 1007.1 1017.4 1016.4 997.5 DAY 6 10 13 13 28 5 7 8 8 27 6 25 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 755.8 754.3 753.1 757.3 760.1 758.8 760.5 760.8 759.8 761.2 762.3 ****** ****** MAX. QFE PRESSURE IN HPA 761.0 759.9 757.7 761.0 763.8 761.2 765.2 764.8 765.0 767.7 767.8 ****** ****** DAY 2 8 30 8 17 3 3 29 25 1 18 ** MIN. QFE PRESSURE IN HPA 749.8 743.4 748.1 752.0 757.4 755.9 756.5 756.8 753.7 754.5 759.2 ****** ****** DAY 12 5 13 10 29 5 6 8 21 27 1 ** MEAN QNH PRESSURE IN HPA 1020.3 1018.4 1016.8 1022.2 1025.8 1024.1 1026.3 1026.7 1025.3 1027.1 1028.5 ****** ****** MAX. QNH PRESSURE IN HPA 1026.9 1025.5 1022.7 1026.9 1030.5 1027.1 1032.2 1031.7 1032.0 1035.4 1035.6 ****** ****** DAY 2 8 30 8 17 3 3 29 25 1 18 ** MIN. QNH PRESSURE IN HPA 1012.6 1004.4 1010.4 1015.4 1022.3 1020.4 1021.2 1021.5 1017.6 1018.6 1024.6 ****** ****** DAY 12 5 13 10 29 5 6 8 21 27 1 ** MEAN QFF PRESSURE IN HPA 1025.7 1019.8 1017.4 1015.7 1011.6 1005.1 1005.7 1005.2 1006.1 1016.5 1025.3 ****** ****** MAX. QFF PRESSURE IN HPA 1034.0 1028.2 1022.7 1028.9 1017.4 1011.5 1009.4 1014.4 1015.7 1026.3 1037.4 ****** ****** DAY 10 13 5 4 8 26 21 30 25 18 18 ** MIN. QFF PRESSURE IN HPA 1014.7 1009.0 1010.7 1008.3 1005.8 1000.2 998.5 999.1 1000.4 1006.7 1015.9 ****** ****** DAY 6 5 13 12 29 5 7 8 18 27 6 ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 755.7 754.0 752.9 757.1 759.9 758.7 760.5 760.7 759.8 761.0 762.2 ****** ****** MAX. QFE PRESSURE IN HPA 761.0 759.3 758.1 760.6 763.8 761.3 765.2 766.0 764.9 767.5 767.8 ****** ****** DAY 2 8 30 7 17 26 3 29 25 1 18 ** MIN. QFE PRESSURE IN HPA 749.5 743.7 747.6 751.7 757.2 755.5 756.2 756.7 753.7 755.5 759.1 ****** ****** DAY 17 5 13 10 29 18 6 8 21 27 1 ** MEAN QNH PRESSURE IN HPA 1020.1 1017.9 1016.6 1022.0 1025.5 1024.0 1026.2 1026.5 1025.3 1026.9 1028.4 ****** ****** MAX. QNH PRESSURE IN HPA 1026.9 1024.7 1023.2 1026.4 1030.5 1027.3 1032.2 1033.3 1031.9 1035.2 1035.6 ****** ****** DAY 2 8 30 7 17 26 3 29 25 1 18 ** MIN. QNH PRESSURE IN HPA 1012.2 1004.8 1009.8 1015.0 1022.0 1019.9 1020.8 1021.4 1017.6 1019.9 1024.5 ****** ****** DAY 17 5 13 10 29 18 6 8 21 27 1 ** MEAN QFF PRESSURE IN HPA 1024.2 1018.7 1016.9 1015.1 1011.1 1004.7 1004.9 1004.4 1005.2 1015.5 1024.4 ****** ****** MAX. QFF PRESSURE IN HPA 1031.9 1029.0 1022.6 1027.5 1016.6 1012.1 1009.2 1014.2 1014.3 1026.0 1035.1 ****** ****** DAY 10 13 28 4 7 26 3 29 24 18 18 ** MIN. QFF PRESSURE IN HPA 1015.4 1008.1 1010.2 1008.6 1005.0 999.9 998.3 998.3 998.9 1007.6 1015.5 ****** ****** DAY 6 10 13 18 29 5 6 8 18 26 6 ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -2.1 -3.1 -0.8 7.6 13.2 19.3 24.8 24.5 17.7 12.1 2.8 -1.4 9.6 MINIMUN AIR TEMPERATURE (C) -6.3 -8.0 -5.3 1.9 6.9 12.8 17.6 17.1 10.5 6.6 -1.2 -5.3 3.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 20 21 20 3 0 0 0 0 0 0 5 23 92 DAYS WITH FREEZING MIN.<= 0 31 27 30 12 1 0 0 0 0 0 22 31 154 TEMPERATURE RECORDS LOWEST(C) -18.0 -15.0 -12.0 -9.5 -0.5 8.2 11.5 13.5 5.4 1.8 -6.0 -11.0 -18.0 DAY 29 7 9 12 6 2 8 29 15 25 29 27 MAXIMUM AIR TEMPERATURE (C) 1.4 0.4 2.2 11.0 16.8 22.7 28.1 28.2 21.8 16.7 5.9 1.7 13.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 6 7 0 0 0 0 13 DAYS WITH MAXIMUM TEMP. <= 0 13 15 9 0 0 0 0 0 0 0 2 11 50 TEMPERATURE RECORDS HIGHEST(C) 6.8 6.4 9.0 21.0 23.8 25.5 31.5 31.8 27.0 21.0 10.0 8.0 31.8 DAY 7 17 24 26 28 27 14 15 1 4 11 16 DIF. BETWEEN (MAX.-MIN.) (C) 7.7 8.4 7.5 9.1 9.9 9.9 10.5 11.1 11.3 10.1 7.1 7.0 9.2 MEAN DAILY TEMP. (MDT) (C) -2.4 -3.8 -1.6 6.5 11.8 17.8 22.9 22.7 16.1 11.6 2.3 -1.8 8.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.0 65.4 54.1 0.3 0.0 0.0 0.0 119.7 HEATING DEG. DAYS(BASE 18 0C) 633.7 610.1 606.1 345.4 191.5 25.2 0.0 0.0 65.5 198.0 469.6 614.1 3759.5 DEWPOINT (MEAN C) -8.9 -11.1 -7.3 -3.8 -0.5 2.5 4.0 -0.3 -3.1 -2.6 -2.3 -5.3 -3.2 MIXING RATIO (G/KG) 2.71 2.29 3.08 3.98 4.94 6.16 6.85 5.13 4.15 4.25 4.36 3.56 4.29 VAPOUR PRESSURE (HPA) 3.27 2.77 3.70 4.81 5.99 7.44 8.25 6.21 5.04 5.17 5.28 4.30 5.19 SATURATION DEF. (HPA) 2.15 2.34 2.25 6.33 9.61 15.24 23.57 25.16 15.77 9.48 2.34 1.35 9.63 RELATIVE HUMIDITY (MEAN %) 62 55 64 47 41 35 28 21 27 39 71 77 47 RELATIVE HUMIDITY (MAX. %) 71 63 74 59 55 47 39 30 40 50 84 88 58 RELATIVE HUMIDITY (MIN. %) 52 48 55 38 33 27 22 16 19 28 60 66 39 RELATIVE HUMIDITY (MEAN% 03UTC) 67 60 67 55 50 46 38 30 40 48 75 78 55 RELATIVE HUMIDITY (MEAN% 09UTC) 58 52 62 44 35 30 25 18 21 30 66 70 43 RELATIVE HUMIDITY (MEAN% 15UTC) 65 56 65 46 43 30 25 19 27 41 76 82 48 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 37.7 15.3 116.6 18.2 25.7 8.4 0.5 0.0 0.0 10.6 63.5 57.5 354.0 DAYS WITH PRECIPITATION >=10 1 0 5 1 1 0 0 0 0 0 2 2 12 DAYS WITH PRECIPITATION >= 5 3 1 8 1 2 0 0 0 0 2 4 4 25 DAYS WITH PRECIPITATION >= 1 5 4 10 3 4 3 0 0 0 2 8 8 47 DAYS WITH PRECIPITATION 8 6 16 9 10 10 2 0 0 3 13 10 87 GREATEST DAILY PRECIPITATION 18.0 7.0 29.0 12.0 14.0 3.4 0.5 0.0 0.0 5.6 31.0 18.0 31.0 DAY 16 19 25 5 5 1 6 ** ** 31 1 10 DAY WITH THUNDER STORM 0 1 0 1 2 2 1 0 0 0 0 0 7 DAYS WITH SNOW OR SLEET 7 4 14 1 1 0 0 0 0 0 10 10 47 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 225 225 225 225 225 225 225 225 225 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 7.6 8.5 8.3 9.0 8.5 9.6 8.2 7.2 8.5 8.7 6.7 6.6 8.4 PREVAILING WIND PERCENT 18.1 21.4 16.1 35.3 27.7 21.3 16.1 27.1 28.7 29.5 4.6 6.5 20.7 CALMS PERCENT OF WIND 72.3 60.7 58.1 38.7 34.2 51.3 51.6 47.7 47.3 53.8 87.7 85.8 58.1 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 173 195 155 1888 VECTOR WIND DIRECTION (MEAN) 244 239 268 246 258 259 260 235 239 243 353 301 248 VECTOR WIND MAGNITUDE(KNOTS) 1.6 2.1 0.9 4.0 3.1 2.1 0.6 2.9 3.8 3.3 0.4 0.5 2.0 WIND STEADINESES (MEAN %) 72.7 61.8 20.9 66.7 49.2 41.2 14.6 76.3 86.4 78.6 36.4 38.5 52.6 WIND SPEED (MEAN KNOTS) 2.2 3.4 4.3 6.0 6.3 5.1 4.1 3.8 4.4 4.2 1.1 1.3 3.8 FASTEST WIND DIRECTION 10 360 10 10 30 30 10 240 250 240 40 20 10 FASTEST WIND SPEED (KNOTS) 23 25 35 25 25 23 23 14 19 19 16 29 35 DAY 18 16 13 1 30 22 3 14 3 7 14 11 DAYS WITH SKY CLEAR (0-2)/8 15 19 9 9 9 18 23 29 28 17 6 11 193 DAYS WITH P.CLOUDY (3-6)/8 10 7 12 14 21 10 8 2 2 11 13 13 123 DAYS WITH CLOUDY (7-8)/8 6 2 10 7 1 2 0 0 0 3 11 7 49 DAYS WITH VISIBILITY =< 2 KM 5 2 9 0 2 0 0 0 0 0 8 13 39 DURATION OF SUNSHINE HOURS 186.1 243.7 180.6 225.9 265.2 282.0 314.7 352.9 318.2 252.5 132.6 137.4 2891.8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 754.3 754.0 751.7 755.6 759.6 758.6 757.4 760.1 761.3 761.4 759.9 755.9 757.5 MAX. QFE PRESSURE IN HPA 760.3 760.4 762.7 762.3 764.7 762.4 761.2 763.4 766.3 766.4 767.6 761.5 767.6 DAY-HOUR 13- 6 17- 9 11- 6 24- 6 12- 6 8- 6 19- 6 17- 6 19- 6 9- 6 8- 6 29- 6 MIN. QFE PRESSURE IN HPA 744.2 746.9 743.5 746.0 750.0 753.8 753.0 755.5 757.0 757.1 756.0 749.0 743.5 DAY-HOUR 31-15 1- 3 29-15 10-15 5- 3 24-15 16-12 5-12 2-12 23-12 13-12 10-12 MEAN QNH PRESSURE IN HPA 1018.3 1018.0 1015.0 1020.0 1025.1 1023.8 1022.3 1025.7 1027.3 1027.4 1025.5 1020.4 1022.4 MAX. QNH PRESSURE IN HPA 1026.0 1026.1 1029.1 1028.5 1031.6 1028.7 1027.1 1030.0 1033.7 1033.8 1035.3 1027.5 1035.3 DAY-HOUR 13- 6 17- 9 11- 6 24- 6 12- 6 8- 6 19- 6 17- 6 19- 6 9- 6 8- 6 29- 6 MIN. QNH PRESSURE IN HPA 1005.5 1008.9 1004.6 1007.8 1012.9 1017.7 1016.7 1019.9 1021.8 1021.9 1020.5 1011.6 1004.6 DAY-HOUR 31-15 1- 3 29-15 10-15 5- 3 24-15 16-12 5-12 2-12 23-12 13-12 10-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.6 ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1033.2 ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 8- 6 **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1014.4 ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 12- 9 **-** 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 754.1 753.4 751.3 755.4 759.5 758.7 757.4 760.2 761.3 761.5 759.6 755.6 757.3 MAX. QFE PRESSURE IN HPA 759.4 758.3 761.0 762.0 764.1 761.9 760.3 762.9 765.3 765.6 766.7 760.6 766.7 DAY 8 17 11 24 12 8 19 17 19 9 8 29 MIN. QFE PRESSURE IN HPA 746.3 746.9 745.4 747.0 750.0 755.0 753.8 756.7 757.5 757.8 756.5 750.1 745.4 DAY 28 1 8 10 5 24 16 6 3 24 13 11 MEAN QNH PRESSURE IN HPA 1018.1 1017.2 1014.6 1019.7 1025.0 1024.0 1022.3 1025.9 1027.2 1027.5 1025.1 1020.0 1022.2 MAX. QNH PRESSURE IN HPA 1024.9 1023.5 1026.9 1028.2 1030.8 1028.0 1026.0 1029.3 1032.4 1032.8 1034.2 1026.4 1034.2 DAY 8 17 11 24 12 8 19 17 19 9 8 29 MIN. QNH PRESSURE IN HPA 1008.1 1008.9 1007.0 1009.0 1012.9 1019.2 1017.7 1021.4 1022.4 1022.8 1021.2 1013.0 1007.0 DAY 28 1 8 10 5 24 16 6 3 24 13 11 MEAN QFF PRESSURE IN HPA 1021.4 1021.8 1015.7 1012.4 1012.1 1004.6 997.9 1002.5 1011.0 1015.9 1022.7 1021.8 1013.3 MAX. QFF PRESSURE IN HPA 1031.7 1030.3 1031.0 1022.7 1019.5 1009.0 1003.1 1007.4 1016.2 1021.7 1032.0 1033.8 1033.8 DAY 24 8 11 12 12 11 8 29 15 9 8 29 MIN. QFF PRESSURE IN HPA 1007.4 1012.1 1003.2 1003.3 1004.7 998.4 992.5 996.7 1001.9 1009.8 1017.0 1011.7 992.5 DAY 16 23 25 10 5 30 16 6 3 7 13 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 755.0 754.5 752.5 756.1 760.2 759.1 758.0 760.7 762.1 762.3 760.4 756.6 758.1 MAX. QFE PRESSURE IN HPA 760.3 760.3 762.7 762.3 764.7 762.4 761.2 763.4 766.3 766.4 767.6 761.5 767.6 DAY 13 17 11 24 12 8 19 17 19 9 8 29 MIN. QFE PRESSURE IN HPA 747.4 750.0 747.1 747.0 751.8 755.0 754.2 757.1 758.5 758.8 757.0 750.1 747.0 DAY 16 1 17 10 5 24 16 5 3 23 13 10 MEAN QNH PRESSURE IN HPA 1019.2 1018.6 1016.0 1020.7 1025.9 1024.5 1023.0 1026.6 1028.3 1028.5 1026.2 1021.3 1023.2 MAX. QNH PRESSURE IN HPA 1026.0 1026.0 1029.1 1028.5 1031.6 1028.7 1027.1 1030.0 1033.7 1033.8 1035.3 1027.5 1035.3 DAY 13 17 11 24 12 8 19 17 19 9 8 29 MIN. QNH PRESSURE IN HPA 1009.5 1012.9 1009.2 1009.0 1015.2 1019.2 1018.2 1021.9 1023.7 1024.1 1021.8 1013.0 1009.0 DAY 16 1 17 10 5 24 16 5 3 23 13 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.7 ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1033.2 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 8 ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1015.9 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 19 ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 754.5 754.4 752.0 755.9 759.8 759.0 757.7 760.4 761.6 761.6 759.8 756.0 757.7 MAX. QFE PRESSURE IN HPA 759.9 760.4 762.4 761.7 764.4 762.4 761.1 763.0 765.2 766.2 767.0 760.9 767.0 DAY 19 17 11 23 12 8 19 17 18 9 8 28 MIN. QFE PRESSURE IN HPA 746.3 749.3 745.3 747.0 751.2 754.8 754.2 756.7 758.0 757.6 756.5 749.9 745.3 DAY 17 27 25 10 5 24 16 5 2 23 13 10 MEAN QNH PRESSURE IN HPA 1018.6 1018.5 1015.5 1020.5 1025.4 1024.3 1022.7 1026.1 1027.7 1027.6 1025.4 1020.5 1022.7 MAX. QNH PRESSURE IN HPA 1025.5 1026.1 1028.7 1027.8 1031.2 1028.7 1027.0 1029.4 1032.2 1033.5 1034.5 1026.8 1034.5 DAY 19 17 11 23 12 8 19 17 18 9 8 28 MIN. QNH PRESSURE IN HPA 1008.1 1012.0 1006.9 1009.0 1014.4 1019.0 1018.2 1021.4 1023.1 1022.6 1021.2 1012.7 1006.9 DAY 17 27 25 10 5 24 16 5 2 23 13 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.4 ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1030.8 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 7 ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1014.4 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 12 ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 753.8 753.7 751.3 755.2 759.2 758.2 757.0 759.5 760.8 760.9 759.3 755.3 757.0 MAX. QFE PRESSURE IN HPA 759.1 759.8 761.0 760.7 763.5 761.4 760.2 762.1 764.4 765.5 766.3 760.3 766.3 DAY 12 17 11 23 12 8 19 16 18 9 8 28 MIN. QFE PRESSURE IN HPA 745.5 748.1 744.1 746.5 750.4 754.3 753.0 755.5 757.0 757.1 756.0 749.0 744.1 DAY 31 27 25 10 5 24 16 5 2 23 13 10 MEAN QNH PRESSURE IN HPA 1017.7 1017.6 1014.5 1019.5 1024.6 1023.3 1021.7 1025.0 1026.6 1026.8 1024.7 1019.6 1021.8 MAX. QNH PRESSURE IN HPA 1024.5 1025.4 1026.9 1026.5 1030.1 1027.4 1025.9 1028.3 1031.2 1032.6 1033.7 1026.0 1033.7 DAY 12 17 11 23 12 8 19 16 18 9 8 28 MIN. QNH PRESSURE IN HPA 1007.1 1010.4 1005.3 1008.4 1013.4 1018.3 1016.7 1019.9 1021.8 1021.9 1020.5 1011.6 1005.3 DAY 31 27 25 10 5 24 16 5 2 23 13 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 ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 754.1 753.9 751.5 755.3 759.2 758.0 756.9 759.5 760.7 761.3 759.6 756.0 757.2 MAX. QFE PRESSURE IN HPA 760.0 759.3 761.7 761.2 763.4 761.0 760.2 762.1 764.3 765.8 766.4 761.0 766.4 DAY 12 17 11 23 12 11 19 16 18 9 7 28 MIN. QFE PRESSURE IN HPA 744.2 749.1 743.5 746.0 751.4 753.8 753.6 755.7 757.0 757.9 756.4 749.9 743.5 DAY 31 5 29 10 5 24 16 5 2 23 28 10 MEAN QNH PRESSURE IN HPA 1018.1 1017.9 1014.8 1019.6 1024.6 1023.1 1021.6 1025.0 1026.6 1027.3 1025.1 1020.5 1022.0 MAX. QNH PRESSURE IN HPA 1025.6 1024.7 1027.8 1027.1 1030.0 1026.9 1025.9 1028.3 1031.1 1033.0 1033.8 1026.9 1033.8 DAY 12 17 11 23 12 11 19 16 18 9 7 28 MIN. QNH PRESSURE IN HPA 1005.5 1011.7 1004.6 1007.8 1014.6 1017.7 1017.5 1020.1 1021.8 1022.9 1021.0 1012.7 1004.6 DAY 31 5 29 10 5 24 16 5 2 23 28 10 MEAN QFF PRESSURE IN HPA 1021.5 1022.5 1015.7 1012.1 1011.6 1003.8 997.3 1001.5 1010.4 1015.9 1022.7 1022.2 1013.1 MAX. QFF PRESSURE IN HPA 1031.4 1034.4 1030.2 1022.4 1018.7 1008.2 1001.0 1006.6 1015.7 1022.4 1031.6 1034.7 1034.7 DAY 23 7 11 12 6 1 8 29 15 8 7 28 MIN. QFF PRESSURE IN HPA 1009.1 1012.0 1001.8 1003.6 1006.9 996.8 992.0 995.3 1001.0 1011.4 1017.0 1010.8 992.0 DAY 16 22 25 9 4 30 11 14 2 6 12 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 760.5 ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 766.9 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 7 ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 757.4 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 19 ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1026.2 ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1034.4 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 7 ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1022.3 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 19 ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.1 ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1031.8 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 7 ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1015.2 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 19 ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 760.4 ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 766.5 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 7 ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 757.3 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 19 ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1026.2 ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1033.9 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 7 ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1022.2 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 19 ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.5 ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1031.2 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 7 ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1015.2 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 19 ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -4.8 -3.7 1.0 9.5 13.1 20.1 22.6 21.9 18.3 12.2 8.1 4.9 10.3 MINIMUN AIR TEMPERATURE (C) -9.0 -8.0 -3.5 4.2 7.3 13.0 15.9 15.5 11.7 6.6 2.4 0.5 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 31 24 14 0 0 0 0 0 0 0 0 3 72 DAYS WITH FREEZING MIN.<= 0 31 28 25 7 0 0 0 0 0 0 3 17 111 TEMPERATURE RECORDS LOWEST(C) -12.6 -17.4 -11.0 -2.0 1.0 8.0 10.5 10.5 8.4 0.2 -1.0 -6.2 -17.4 DAY 17 17 3 6 3 1 25 6 13 11 25 6 MAXIMUM AIR TEMPERATURE (C) -1.3 -0.1 4.2 12.9 16.4 23.3 26.4 25.6 22.2 16.1 11.9 8.5 13.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 2 0 0 0 0 0 2 DAYS WITH MAXIMUM TEMP. <= 0 22 15 4 0 0 0 0 0 0 0 0 0 41 TEMPERATURE RECORDS HIGHEST(C) 2.2 6.4 9.5 21.2 22.4 27.6 31.6 29.0 27.0 22.4 15.6 16.2 31.6 DAY 8 24 28 17 11 28 11 20 2 1 18 10 DIF. BETWEEN (MAX.-MIN.) (C) 7.7 7.9 7.7 8.7 9.1 10.3 10.5 10.1 10.5 9.5 9.5 8.0 9.1 MEAN DAILY TEMP. (MDT) (C) -5.2 -4.0 0.4 8.6 11.8 18.2 21.1 20.6 16.9 11.3 7.2 4.5 9.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 1.3 32.2 26.9 0.8 0.0 0.0 0.0 61.3 HEATING DEG. DAYS(BASE 18 0C) 717.7 616.9 547.0 283.1 191.4 20.1 4.0 12.7 45.7 206.4 325.1 419.1 3389.2 DEWPOINT (MEAN C) -9.5 -8.3 -5.0 -2.3 1.9 3.1 5.2 4.5 0.5 -2.3 -4.6 -5.5 -1.9 MIXING RATIO (G/KG) 2.61 2.85 3.68 4.42 5.92 6.36 7.55 7.13 5.44 4.34 3.69 3.52 4.79 VAPOUR PRESSURE (HPA) 3.14 3.44 4.44 5.34 7.15 7.71 9.09 8.62 6.59 5.28 4.49 4.28 5.80 SATURATION DEF. (HPA) 1.20 1.40 2.38 7.16 8.48 16.21 18.88 18.33 14.96 9.55 6.55 4.69 9.15 RELATIVE HUMIDITY (MEAN %) 72 73 67 47 49 34 34 35 33 40 44 53 48 RELATIVE HUMIDITY (MAX. %) 79 81 76 63 63 44 46 46 46 52 60 61 60 RELATIVE HUMIDITY (MIN. %) 64 65 59 36 40 27 27 28 25 30 33 44 40 RELATIVE HUMIDITY (MEAN% 03UTC) 72 72 70 56 59 44 45 45 45 47 54 55 55 RELATIVE HUMIDITY (MEAN% 09UTC) 71 71 63 44 47 31 31 31 29 34 35 48 45 RELATIVE HUMIDITY (MEAN% 15UTC) 73 77 70 46 47 31 33 32 34 47 52 58 50 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 101.4 109.9 110.2 44.0 56.2 8.7 2.0 32.6 21.9 17.2 6.4 50.4 560.9 DAYS WITH PRECIPITATION >=10 5 5 3 2 0 0 0 1 0 0 0 2 18 DAYS WITH PRECIPITATION >= 5 8 7 5 4 7 1 0 2 3 2 0 2 41 DAYS WITH PRECIPITATION >= 1 11 13 12 7 11 3 0 4 4 2 2 5 74 DAYS WITH PRECIPITATION 13 14 16 10 13 5 7 4 6 3 4 7 102 GREATEST DAILY PRECIPITATION 21.0 32.0 49.0 13.0 9.0 6.0 0.6 20.0 7.0 9.0 4.0 29.0 49.0 DAY 6 15 30 29 14 1 18 3 12 11 12 4 DAY WITH THUNDER STORM 0 1 2 2 7 2 5 2 3 1 0 0 25 DAYS WITH SNOW OR SLEET 14 11 10 3 2 0 0 0 0 1 1 6 48 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 45 225 225 225 225 225 225 225 225 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 17.0 13.0 9.1 9.8 9.2 6.4 7.4 6.2 7.7 8.4 6.6 7.1 8.0 PREVAILING WIND PERCENT 5.8 7.9 18.1 24.7 21.9 18.7 19.4 18.1 25.3 12.3 24.0 12.3 17.3 CALMS PERCENT OF WIND 80.0 78.6 62.6 44.0 46.5 47.3 41.3 48.4 48.0 71.0 66.0 83.2 59.7 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 4 307 247 268 253 293 268 277 246 231 233 225 260 VECTOR WIND MAGNITUDE(KNOTS) 1.0 0.9 2.4 2.7 3.2 1.7 1.9 1.5 2.9 1.2 1.7 1.0 1.6 WIND STEADINESES (MEAN %) 41.7 30.0 68.6 43.5 64.0 36.2 40.4 38.5 70.7 52.2 77.3 83.3 44.4 WIND SPEED (MEAN KNOTS) 2.4 3.0 3.5 6.2 5.0 4.7 4.7 3.9 4.1 2.3 2.2 1.2 3.6 FASTEST WIND DIRECTION 60 20 10 30 240 10 360 360 330 240 240 250 60 FASTEST WIND SPEED (KNOTS) 49 31 29 29 29 31 23 23 29 23 16 17 49 DAY 14 16 3 6 29 13 20 11 14 8 10 21 DAYS WITH SKY CLEAR (0-2)/8 15 11 10 10 14 19 14 14 22 20 16 10 175 DAYS WITH P.CLOUDY (3-6)/8 3 7 11 12 10 11 16 17 7 7 12 11 124 DAYS WITH CLOUDY (7-8)/8 13 10 10 8 7 0 1 0 1 4 2 10 66 DAYS WITH VISIBILITY =< 2 KM 10 11 6 3 2 0 0 0 0 2 1 2 37 DURATION OF SUNSHINE HOURS 158.6 162.7 180.0 251.0 283.8 334.9 305.5 302.6 297.8 270.5 223.1 172.0 2942.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 752.4 753.3 754.3 757.6 759.5 761.1 758.4 761.1 760.7 762.2 761.5 761.2 758.6 MAX. QFE PRESSURE IN HPA 760.5 763.4 762.9 768.0 767.3 765.5 764.4 765.0 764.3 767.9 767.7 768.4 768.4 DAY-HOUR 4- 6 23- 6 28- 6 12- 9 8- 6 6- 6 20- 6 29- 6 29- 6 14- 6 21- 6 10- 6 MIN. QFE PRESSURE IN HPA 739.5 741.5 746.0 750.7 752.0 757.2 752.5 757.5 757.0 757.7 757.0 754.1 739.5 DAY-HOUR 13- 9 14- 3 1-15 24- 3 30- 3 1- 3 5-12 22-12 5-15 1-12 1-12 21- 9 MEAN QNH PRESSURE IN HPA 1015.9 1017.0 1018.4 1022.6 1025.0 1027.0 1023.5 1027.0 1026.5 1028.5 1027.5 1027.2 1023.8 MAX. QNH PRESSURE IN HPA 1026.3 1030.0 1029.3 1035.8 1034.9 1032.6 1031.2 1032.0 1031.1 1035.7 1035.4 1036.3 1036.3 DAY-HOUR 4- 6 23- 6 28- 6 12- 9 8- 6 6- 6 20- 6 29- 6 29- 6 14- 6 21- 6 10- 6 MIN. QNH PRESSURE IN HPA 999.5 1002.0 1007.8 1013.8 1015.4 1022.0 1016.1 1022.4 1021.8 1022.7 1021.8 1018.1 999.5 DAY-HOUR 13- 9 14- 3 1-15 24- 3 30- 3 1- 3 5-12 22-12 5-15 1-12 1-12 21- 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 752.1 752.8 753.9 757.4 759.3 761.2 758.5 761.2 760.8 762.1 761.4 761.0 758.5 MAX. QFE PRESSURE IN HPA 758.7 762.1 761.9 766.6 766.0 764.8 763.1 764.0 763.2 767.1 766.9 767.8 767.8 DAY 4 23 28 12 8 6 20 25 29 14 21 10 MIN. QFE PRESSURE IN HPA 740.2 741.5 746.2 750.7 752.0 757.2 753.0 758.2 757.1 758.0 758.2 754.3 740.2 DAY 13 14 2 24 30 1 8 22 6 2 11 21 MEAN QNH PRESSURE IN HPA 1015.5 1016.5 1017.9 1022.2 1024.8 1027.1 1023.7 1027.1 1026.6 1028.3 1027.4 1026.9 1023.6 MAX. QNH PRESSURE IN HPA 1024.0 1028.3 1028.0 1034.0 1033.3 1031.7 1029.6 1030.7 1029.7 1034.7 1034.4 1035.6 1035.6 DAY 4 23 28 12 8 6 20 25 29 14 21 10 MIN. QNH PRESSURE IN HPA 1000.4 1002.0 1008.0 1013.8 1015.4 1022.0 1016.7 1023.3 1021.9 1023.1 1023.3 1018.3 1000.4 DAY 13 14 2 24 30 1 8 22 6 2 11 21 MEAN QFF PRESSURE IN HPA 1021.1 1020.9 1017.1 1013.1 1011.5 1007.1 1001.2 1005.6 1009.3 1017.3 1020.8 1022.7 1014.0 MAX. QFF PRESSURE IN HPA 1031.8 1037.2 1025.0 1022.5 1023.1 1015.0 1011.3 1010.3 1015.7 1026.2 1026.3 1029.4 1037.2 DAY 4 23 22 12 3 17 21 8 13 10 25 5 MIN. QFF PRESSURE IN HPA 1003.3 1005.2 1003.3 1004.8 1002.1 1000.9 992.3 999.9 1000.6 1006.7 1014.6 1013.7 992.3 DAY 13 8 30 24 30 29 5 22 5 1 11 21 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 753.0 753.8 754.9 758.2 760.0 761.7 758.9 761.7 761.4 763.0 762.2 762.0 759.2 MAX. QFE PRESSURE IN HPA 760.5 763.4 762.9 767.6 767.3 765.5 764.4 765.0 764.3 767.9 767.7 768.4 768.4 DAY 4 23 28 12 8 6 20 29 29 14 21 10 MIN. QFE PRESSURE IN HPA 740.0 743.0 747.4 751.0 752.5 758.2 753.4 758.8 757.5 758.8 759.2 755.2 740.0 DAY 13 14 2 24 30 1 5 22 5 2 11 21 MEAN QNH PRESSURE IN HPA 1016.7 1017.7 1019.1 1023.3 1025.6 1027.8 1024.3 1027.7 1027.4 1029.5 1028.5 1028.2 1024.6 MAX. QNH PRESSURE IN HPA 1026.3 1030.0 1029.3 1035.3 1034.9 1032.6 1031.2 1032.0 1031.1 1035.7 1035.4 1036.3 1036.3 DAY 4 23 28 12 8 6 20 29 29 14 21 10 MIN. QNH PRESSURE IN HPA 1000.1 1003.9 1009.5 1014.1 1016.1 1023.3 1017.2 1024.1 1022.4 1024.1 1024.6 1019.5 1000.1 DAY 13 14 2 24 30 1 5 22 5 2 11 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 752.6 753.6 754.7 758.1 759.9 761.4 758.7 761.4 761.0 762.5 761.6 761.3 758.9 MAX. QFE PRESSURE IN HPA 759.8 763.3 762.5 768.0 767.0 765.3 763.8 764.2 763.7 766.4 767.0 767.4 768.0 DAY 4 23 28 12 8 5 20 25 29 14 21 10 MIN. QFE PRESSURE IN HPA 739.5 743.3 747.4 751.0 752.2 758.2 753.0 758.1 757.5 758.3 758.5 754.1 739.5 DAY 13 16 2 24 30 1 5 22 5 2 1 21 MEAN QNH PRESSURE IN HPA 1016.2 1017.4 1018.9 1023.2 1025.5 1027.4 1023.9 1027.4 1026.9 1028.8 1027.7 1027.3 1024.2 MAX. QNH PRESSURE IN HPA 1025.4 1029.8 1028.8 1035.8 1034.5 1032.4 1030.5 1031.0 1030.3 1033.8 1034.5 1035.1 1035.8 DAY 4 23 28 12 8 5 20 25 29 14 21 10 MIN. QNH PRESSURE IN HPA 999.5 1004.3 1009.5 1014.1 1015.7 1023.3 1016.7 1023.2 1022.4 1023.5 1023.7 1018.1 999.5 DAY 13 16 2 24 30 1 5 22 5 2 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 752.0 753.0 754.0 757.3 759.2 760.8 758.0 760.7 760.2 761.7 761.0 760.7 758.2 MAX. QFE PRESSURE IN HPA 758.5 762.1 761.6 767.1 766.0 764.9 762.9 763.6 762.6 765.4 766.4 766.7 767.1 DAY 4 23 28 12 8 6 20 25 29 14 21 9 MIN. QFE PRESSURE IN HPA 739.5 742.8 746.0 751.5 752.9 757.8 752.5 757.5 757.1 757.7 757.0 754.5 739.5 DAY 13 13 18 23 30 1 5 22 6 1 1 21 MEAN QNH PRESSURE IN HPA 1015.4 1016.7 1017.9 1022.2 1024.6 1026.6 1023.0 1026.5 1025.9 1027.8 1026.9 1026.5 1023.3 MAX. QNH PRESSURE IN HPA 1023.7 1028.3 1027.7 1034.7 1033.3 1031.9 1029.3 1030.2 1028.9 1032.5 1033.8 1034.2 1034.7 DAY 4 23 28 12 8 6 20 25 29 14 21 9 MIN. QNH PRESSURE IN HPA 999.5 1003.7 1007.8 1014.8 1016.6 1022.8 1016.1 1022.4 1021.9 1022.7 1021.8 1018.6 999.5 DAY 13 13 18 23 30 1 5 22 6 1 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 ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 752.3 753.3 754.1 757.3 759.0 760.6 757.9 760.5 760.2 761.9 761.2 761.1 758.3 MAX. QFE PRESSURE IN HPA 758.8 762.1 761.4 766.0 766.0 764.5 762.9 763.7 762.8 765.4 766.7 767.0 767.0 DAY 4 23 27 12 8 6 20 29 29 9 21 9 MIN. QFE PRESSURE IN HPA 741.0 742.8 746.0 751.0 753.1 757.2 752.5 757.5 757.0 757.7 757.5 755.2 741.0 DAY 13 13 1 5 30 1 5 22 5 1 1 31 MEAN QNH PRESSURE IN HPA 1015.8 1017.0 1018.1 1022.2 1024.4 1026.3 1022.9 1026.3 1025.9 1028.0 1027.2 1027.0 1023.4 MAX. QNH PRESSURE IN HPA 1024.1 1028.3 1027.4 1033.3 1033.3 1031.4 1029.3 1030.3 1029.2 1032.5 1034.2 1034.5 1034.5 DAY 4 23 27 12 8 6 20 29 29 9 21 9 MIN. QNH PRESSURE IN HPA 1001.4 1003.7 1007.8 1014.1 1016.8 1022.0 1016.1 1022.4 1021.8 1022.7 1022.4 1019.5 1001.4 DAY 13 13 1 5 30 1 5 22 5 1 1 31 MEAN QFF PRESSURE IN HPA 1021.4 1021.4 1017.1 1012.8 1011.0 1006.3 1000.5 1004.8 1008.6 1017.1 1020.7 1022.9 1013.7 MAX. QFF PRESSURE IN HPA 1030.1 1034.7 1025.4 1021.3 1020.5 1013.0 1011.8 1009.7 1014.9 1025.6 1025.9 1031.7 1034.7 DAY 22 23 4 11 2 16 20 9 12 9 24 29 MIN. QFF PRESSURE IN HPA 1008.6 1008.7 1001.0 1005.8 1003.2 1000.8 991.3 999.2 1000.6 1005.8 1014.0 1015.2 991.3 DAY 13 8 18 21 21 28 5 21 5 1 1 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 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -2.1 0.4 1.8 8.5 15.5 21.4 20.9 22.2 18.4 12.2 2.5 2.1 10.3 MINIMUN AIR TEMPERATURE (C) -6.6 -4.5 -3.3 2.7 8.4 13.5 13.5 15.3 11.2 6.5 -1.6 -2.6 4.4 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 12 0 0 0 0 0 0 0 6 11 71 DAYS WITH FREEZING MIN.<= 0 31 28 28 5 0 0 0 0 0 1 21 26 140 TEMPERATURE RECORDS LOWEST(C) -11.0 -11.4 -10.5 -2.2 1.4 10.0 6.0 11.0 3.8 -0.8 -9.0 -9.6 -11.4 DAY 3 22 19 10 22 6 13 31 28 27 30 1 MAXIMUM AIR TEMPERATURE (C) 1.3 3.6 5.1 12.4 19.1 24.8 24.7 26.4 22.5 16.2 5.4 5.2 13.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 2 0 0 0 0 0 2 DAYS WITH MAXIMUM TEMP. <= 0 14 4 2 0 0 0 0 0 0 0 4 1 25 TEMPERATURE RECORDS HIGHEST(C) 7.2 8.0 12.8 17.2 25.4 27.8 30.4 28.2 26.6 21.0 10.4 11.0 30.4 DAY 6 27 31 30 31 28 4 11 15 5 19 23 DIF. BETWEEN (MAX.-MIN.) (C) 7.9 8.1 8.4 9.7 10.7 11.3 11.2 11.1 11.3 9.7 7.0 7.8 9.5 MEAN DAILY TEMP. (MDT) (C) -2.6 -0.4 0.9 7.6 13.8 19.2 19.1 20.9 16.9 11.3 1.9 1.3 9.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 2.7 13.5 10.0 0.0 0.0 0.0 0.0 26.3 HEATING DEG. DAYS(BASE 18 0C) 639.3 516.1 530.0 312.7 133.5 6.5 29.0 0.2 51.7 207.0 482.3 517.1 3425.6 DEWPOINT (MEAN C) -7.7 -7.1 -6.9 -3.0 -2.2 -1.2 4.9 1.4 -0.1 -2.4 -3.7 -6.3 -2.8 MIXING RATIO (G/KG) 2.97 3.12 3.15 4.26 4.41 4.79 7.39 5.72 5.14 4.36 3.98 3.25 4.38 VAPOUR PRESSURE (HPA) 3.59 3.77 3.79 5.15 5.34 5.79 8.89 6.92 6.23 5.29 4.81 3.95 5.30 SATURATION DEF. (HPA) 1.78 2.66 3.43 6.27 12.75 20.12 16.77 20.31 15.68 9.49 2.70 3.37 9.61 RELATIVE HUMIDITY (MEAN %) 68 60 56 47 31 24 39 27 32 41 66 58 46 RELATIVE HUMIDITY (MAX. %) 79 70 68 61 43 35 53 39 45 52 79 68 58 RELATIVE HUMIDITY (MIN. %) 60 50 46 35 24 18 30 20 24 32 57 49 37 RELATIVE HUMIDITY (MEAN% 03UTC) 69 64 60 59 41 35 53 38 45 49 70 57 53 RELATIVE HUMIDITY (MEAN% 09UTC) 63 56 52 42 28 21 35 22 27 36 61 54 41 RELATIVE HUMIDITY (MEAN% 15UTC) 76 64 60 44 29 20 35 27 32 44 75 65 48 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 72.9 71.2 75.1 31.5 5.4 0.2 39.5 0.1 4.0 30.0 70.2 31.6 431.7 DAYS WITH PRECIPITATION >=10 4 3 2 1 0 0 1 0 0 1 3 1 16 DAYS WITH PRECIPITATION >= 5 6 5 6 2 0 0 3 0 0 3 4 2 31 DAYS WITH PRECIPITATION >= 1 10 7 6 6 2 0 7 0 1 6 7 8 60 DAYS WITH PRECIPITATION 10 7 11 11 5 1 8 3 1 6 10 9 82 GREATEST DAILY PRECIPITATION 18.0 17.0 34.0 17.0 3.2 0.2 16.0 0.1 4.0 12.0 27.0 12.0 34.0 DAY 9 20 21 22 10 17 16 25 27 27 1 3 DAY WITH THUNDER STORM 0 0 0 2 1 1 2 0 0 2 1 0 9 DAYS WITH SNOW OR SLEET 10 6 8 3 0 0 0 0 0 2 7 7 43 DAYS WITH DUST 0 1 0 0 1 0 0 0 0 0 0 0 2 WIND DIRECTION (PREVAILING) 225 225 225 225 225 270 225 225 225 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 6.7 9.1 7.8 9.1 8.5 9.6 7.5 8.1 7.0 9.4 6.7 7.8 8.2 PREVAILING WIND PERCENT 9.7 16.4 15.5 18.7 25.2 26.0 24.5 21.9 23.3 27.1 16.0 5.8 19.1 CALMS PERCENT OF WIND 75.5 69.3 54.8 50.0 47.1 42.0 49.7 41.9 54.0 51.0 74.0 82.6 57.6 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 330 242 325 253 251 247 265 295 242 245 253 343 262 VECTOR WIND MAGNITUDE(KNOTS) 1.3 2.4 1.8 2.8 2.9 4.4 2.0 1.8 2.0 3.2 1.1 0.7 1.9 WIND STEADINESES (MEAN %) 41.9 77.4 34.0 57.1 59.2 86.3 46.5 32.1 57.1 69.6 57.9 41.2 47.5 WIND SPEED (MEAN KNOTS) 3.1 3.1 5.3 4.9 4.9 5.1 4.3 5.6 3.5 4.6 1.9 1.7 4.0 FASTEST WIND DIRECTION 260 270 10 360 360 240 360 30 360 240 360 360 10 FASTEST WIND SPEED (KNOTS) 35 27 39 23 27 29 39 23 19 27 19 27 39 DAY 1 21 2 18 11 3 12 6 4 12 17 5 DAYS WITH SKY CLEAR (0-2)/8 15 15 11 9 24 27 22 24 29 24 11 12 223 DAYS WITH P.CLOUDY (3-6)/8 7 7 12 16 5 3 6 7 0 6 11 10 90 DAYS WITH CLOUDY (7-8)/8 9 6 8 5 2 0 3 0 1 1 7 9 51 DAYS WITH VISIBILITY =< 2 KM 8 3 8 0 0 0 0 0 0 1 5 7 32 DURATION OF SUNSHINE HOURS 174.7 204.3 209.1 246.9 332.7 342.7 314.7 299.5 317.0 259.2 172.5 171.4 3044.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 755.7 754.9 754.3 757.2 758.8 758.2 757.5 760.5 759.9 761.2 758.1 760.4 758.1 MAX. QFE PRESSURE IN HPA 763.8 761.7 762.2 762.0 766.0 762.9 761.8 765.9 764.1 765.2 763.2 765.4 766.0 DAY-HOUR 2- 6 12- 6 31- 6 30- 6 28- 6 1- 6 19- 6 20- 6 30- 6 1- 6 14- 6 6- 6 MIN. QFE PRESSURE IN HPA 749.6 745.2 748.0 749.0 750.9 751.0 753.6 756.4 755.5 756.0 752.3 753.9 745.2 DAY-HOUR 9-12 21- 3 3- 3 8-15 20-15 25-12 14- 3 14-12 16- 3 31-12 26-12 15-12 MEAN QNH PRESSURE IN HPA 1020.1 1019.1 1018.4 1022.1 1024.1 1023.3 1022.4 1026.2 1025.5 1027.1 1023.2 1026.2 1023.1 MAX. QNH PRESSURE IN HPA 1030.5 1027.8 1028.4 1028.2 1033.3 1029.3 1027.9 1033.1 1030.8 1032.2 1029.7 1032.5 1033.3 DAY-HOUR 2- 6 12- 6 31- 6 30- 6 28- 6 1- 6 19- 6 20- 6 30- 6 1- 6 14- 6 6- 6 MIN. QNH PRESSURE IN HPA 1012.4 1006.7 1010.3 1011.6 1014.0 1014.1 1017.5 1021.0 1019.9 1020.5 1015.8 1017.8 1006.7 DAY-HOUR 9-12 21- 3 3- 3 8-15 20-15 25-12 14- 3 14-12 16- 3 31-12 26-12 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 755.3 754.6 754.0 757.1 758.7 758.2 757.5 760.5 759.8 761.2 757.8 760.1 757.9 MAX. QFE PRESSURE IN HPA 761.8 760.8 761.4 760.8 765.6 762.5 761.7 765.0 762.9 764.1 761.9 764.5 765.6 DAY 2 12 31 30 28 1 19 20 5 1 3 6 MIN. QFE PRESSURE IN HPA 750.1 745.2 748.0 749.4 752.2 751.4 753.6 757.4 755.5 757.4 753.4 754.1 745.2 DAY 19 21 3 9 21 25 14 14 16 31 26 16 MEAN QNH PRESSURE IN HPA 1019.7 1018.8 1017.9 1021.9 1024.0 1023.4 1022.5 1026.3 1025.4 1027.1 1022.8 1025.8 1023.0 MAX. QNH PRESSURE IN HPA 1027.9 1026.6 1027.4 1026.6 1032.8 1028.8 1027.8 1032.0 1029.3 1030.8 1028.0 1031.4 1032.8 DAY 2 12 31 30 28 1 19 20 5 1 3 6 MIN. QNH PRESSURE IN HPA 1013.0 1006.7 1010.3 1012.1 1015.7 1014.6 1017.5 1022.3 1019.9 1022.3 1017.2 1018.1 1006.7 DAY 19 21 3 9 21 25 14 14 16 31 26 16 MEAN QFF PRESSURE IN HPA 1022.9 1019.4 1016.8 1013.8 1009.0 1002.5 1001.5 1005.1 1008.1 1015.9 1020.7 1025.0 1013.4 MAX. QFF PRESSURE IN HPA 1037.4 1028.7 1029.8 1021.3 1014.6 1009.0 1008.5 1012.0 1018.1 1023.6 1031.7 1034.7 1037.4 DAY 2 12 19 11 2 17 28 20 28 27 30 6 MIN. QFF PRESSURE IN HPA 1013.9 1007.2 1011.3 1005.5 999.1 992.6 996.2 999.4 999.1 1012.8 1011.2 1017.6 992.6 DAY 9 21 22 9 20 25 23 14 16 19 1 16 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 756.2 755.6 754.9 757.8 759.4 758.7 758.0 761.1 760.6 762.0 758.7 761.1 758.7 MAX. QFE PRESSURE IN HPA 763.8 761.7 762.2 762.0 766.0 762.9 761.8 765.9 764.1 765.2 763.2 765.4 766.0 DAY 2 12 31 30 28 1 19 20 30 1 14 6 MIN. QFE PRESSURE IN HPA 751.5 746.9 749.0 751.5 753.5 751.6 754.1 758.3 756.4 757.7 753.2 755.7 746.9 DAY 19 21 3 9 21 25 14 14 16 31 26 15 MEAN QNH PRESSURE IN HPA 1020.8 1020.0 1019.1 1022.9 1024.8 1024.0 1023.1 1027.0 1026.4 1028.2 1024.0 1027.0 1023.9 MAX. QNH PRESSURE IN HPA 1030.5 1027.8 1028.4 1028.2 1033.3 1029.3 1027.9 1033.1 1030.8 1032.2 1029.7 1032.5 1033.3 DAY 2 12 31 30 28 1 19 20 30 1 14 6 MIN. QNH PRESSURE IN HPA 1014.8 1008.9 1011.6 1014.8 1017.3 1014.9 1018.1 1023.5 1021.0 1022.7 1016.9 1020.1 1008.9 DAY 19 21 3 9 21 25 14 14 16 31 26 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 756.0 755.3 754.8 757.6 759.2 758.5 757.8 760.7 760.2 761.4 758.3 760.5 758.4 MAX. QFE PRESSURE IN HPA 763.0 761.7 762.2 761.8 765.5 762.8 761.0 764.9 763.8 764.2 763.2 765.2 765.5 DAY 2 12 31 30 28 1 19 20 30 1 14 6 MIN. QFE PRESSURE IN HPA 750.5 747.4 748.6 752.0 753.5 751.3 754.4 757.6 756.4 756.4 752.4 754.8 747.4 DAY 9 21 3 8 20 25 14 14 16 31 26 15 MEAN QNH PRESSURE IN HPA 1020.5 1019.7 1018.9 1022.5 1024.6 1023.8 1022.8 1026.5 1025.9 1027.4 1023.4 1026.3 1023.5 MAX. QNH PRESSURE IN HPA 1029.4 1027.8 1028.4 1027.9 1032.6 1029.2 1026.9 1031.9 1030.5 1031.0 1029.7 1032.2 1032.6 DAY 2 12 31 30 28 1 19 20 30 1 14 6 MIN. QNH PRESSURE IN HPA 1013.5 1009.5 1011.1 1015.4 1017.3 1014.5 1018.5 1022.6 1021.0 1021.0 1015.9 1019.0 1009.5 DAY 9 21 3 8 20 25 14 14 16 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 755.3 754.4 753.9 756.9 758.4 757.8 757.2 760.0 759.4 760.7 757.6 760.0 757.6 MAX. QFE PRESSURE IN HPA 762.4 760.6 761.4 761.2 764.1 762.4 760.3 764.2 763.4 763.9 762.4 765.0 765.0 DAY 2 12 31 30 28 1 18 19 30 1 14 6 MIN. QFE PRESSURE IN HPA 749.6 747.5 748.0 750.0 751.8 751.0 753.8 756.4 755.9 756.0 752.3 753.9 747.5 DAY 9 21 3 8 20 25 14 14 16 31 26 15 MEAN QNH PRESSURE IN HPA 1019.6 1018.5 1017.9 1021.6 1023.6 1022.8 1022.0 1025.6 1024.9 1026.5 1022.6 1025.6 1022.6 MAX. QNH PRESSURE IN HPA 1028.7 1026.4 1027.4 1027.1 1030.8 1028.7 1026.0 1031.0 1030.0 1030.6 1028.7 1032.0 1032.0 DAY 2 12 31 30 28 1 18 19 30 1 14 6 MIN. QNH PRESSURE IN HPA 1012.4 1009.7 1010.3 1012.9 1015.2 1014.1 1017.7 1021.0 1020.4 1020.5 1015.8 1017.8 1009.7 DAY 9 21 3 8 20 25 14 14 16 31 26 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 ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 755.6 754.6 754.1 756.8 758.3 757.6 757.0 759.9 759.4 760.8 758.1 760.4 757.7 MAX. QFE PRESSURE IN HPA 762.4 760.8 761.3 760.5 764.0 762.1 760.3 764.2 763.4 763.9 762.4 764.5 764.5 DAY 2 12 31 30 28 1 18 19 30 1 14 6 MIN. QFE PRESSURE IN HPA 750.0 746.4 748.5 749.0 750.9 751.0 753.6 756.4 756.4 756.0 753.7 754.6 746.4 DAY 9 5 2 8 20 25 14 14 16 31 12 15 MEAN QNH PRESSURE IN HPA 1020.1 1018.7 1018.1 1021.6 1023.4 1022.5 1021.7 1025.5 1024.9 1026.7 1023.2 1026.2 1022.7 MAX. QNH PRESSURE IN HPA 1028.7 1026.6 1027.3 1026.3 1030.7 1028.3 1026.0 1031.0 1030.0 1030.6 1028.7 1031.4 1031.4 DAY 2 12 31 30 28 1 18 19 30 1 14 6 MIN. QNH PRESSURE IN HPA 1012.9 1008.3 1011.0 1011.6 1014.0 1014.1 1017.5 1021.0 1021.0 1020.5 1017.6 1018.7 1008.3 DAY 9 5 2 8 20 25 14 14 16 31 12 15 MEAN QFF PRESSURE IN HPA 1023.2 1019.1 1016.8 1013.4 1008.3 1001.7 1000.9 1004.3 1007.8 1015.5 1021.3 1025.1 1013.1 MAX. QFF PRESSURE IN HPA 1037.5 1028.2 1028.6 1021.3 1013.9 1008.5 1009.2 1010.6 1017.3 1023.3 1034.3 1034.6 1037.5 DAY 2 12 18 10 23 16 28 20 30 27 30 5 MIN. QFF PRESSURE IN HPA 1009.5 1007.1 1009.0 1002.7 995.9 992.5 995.1 999.0 1001.0 1011.8 1013.2 1019.0 992.5 DAY 9 20 26 8 20 25 4 13 16 12 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 ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -3.0 -2.3 1.3 11.9 17.1 20.7 22.5 22.7 19.0 9.7 1.7 -0.5 10.1 MINIMUN AIR TEMPERATURE (C) -7.6 -7.2 -3.8 5.6 9.9 12.6 15.1 15.6 12.2 4.7 -1.9 -4.2 4.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 25 26 13 0 0 0 0 0 0 0 9 16 89 DAYS WITH FREEZING MIN.<= 0 28 29 27 0 0 0 0 0 0 2 24 31 141 TEMPERATURE RECORDS LOWEST(C) -15.0 -14.0 -10.4 1.2 4.0 4.0 9.5 12.0 7.4 0.0 -8.0 -7.4 -15.0 DAY 18 9 3 2 11 13 13 12 26 5 11 13 MAXIMUM AIR TEMPERATURE (C) 0.6 1.6 4.5 15.6 20.4 24.4 26.4 26.6 23.4 13.4 4.6 2.8 13.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 1 0 0 0 0 0 0 1 DAYS WITH MAXIMUM TEMP. <= 0 16 8 4 0 0 0 0 0 0 0 1 4 33 TEMPERATURE RECORDS HIGHEST(C) 10.2 7.4 10.4 20.4 24.6 30.0 29.6 29.2 28.0 18.8 11.6 9.4 30.0 DAY 1 24 30 20 26 30 1 3 8 26 3 31 DIF. BETWEEN (MAX.-MIN.) (C) 8.2 8.8 8.3 10.0 10.5 11.8 11.3 11.0 11.2 8.7 6.5 7.0 9.4 MEAN DAILY TEMP. (MDT) (C) -3.5 -2.8 0.3 10.6 15.2 18.5 20.8 21.1 17.8 9.1 1.4 -0.7 9.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 12.2 19.5 19.4 2.0 0.0 0.0 0.0 53.1 HEATING DEG. DAYS(BASE 18 0C) 666.6 602.1 547.2 221.8 90.0 39.4 1.0 0.0 34.1 277.1 499.4 578.7 3557.6 DEWPOINT (MEAN C) -10.5 -9.8 -7.4 -3.7 -3.8 -1.5 1.8 1.4 0.9 -1.0 -4.1 -5.4 -3.6 MIXING RATIO (G/KG) 2.45 2.50 3.06 4.07 3.97 4.67 5.93 5.76 5.50 4.85 3.86 3.48 4.17 VAPOUR PRESSURE (HPA) 2.95 3.02 3.69 4.92 4.80 5.65 7.16 6.97 6.66 5.88 4.69 4.21 5.05 SATURATION DEF. (HPA) 2.23 2.29 3.30 9.25 15.06 19.67 20.57 21.10 15.99 6.55 2.42 1.79 10.02 RELATIVE HUMIDITY (MEAN %) 60 58 54 36 25 25 27 26 33 52 68 72 45 RELATIVE HUMIDITY (MAX. %) 71 71 64 49 34 35 38 38 46 65 79 81 56 RELATIVE HUMIDITY (MIN. %) 52 49 47 27 19 19 20 21 24 42 57 63 37 RELATIVE HUMIDITY (MEAN% 03UTC) 60 59 61 46 33 34 36 38 45 61 71 71 51 RELATIVE HUMIDITY (MEAN% 09UTC) 56 53 53 32 23 22 22 23 27 47 64 68 41 RELATIVE HUMIDITY (MEAN% 15UTC) 67 66 54 37 22 24 28 25 34 57 74 78 47 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 107.9 52.5 39.6 7.6 0.0 1.0 1.7 0.0 8.1 60.1 51.7 110.7 440.9 DAYS WITH PRECIPITATION >=10 5 2 2 0 0 0 0 0 0 3 1 3 16 DAYS WITH PRECIPITATION >= 5 8 3 4 0 0 0 0 0 0 3 3 6 27 DAYS WITH PRECIPITATION >= 1 14 7 6 3 0 1 1 0 3 7 10 8 60 DAYS WITH PRECIPITATION 16 11 11 9 4 1 6 0 7 12 16 16 109 GREATEST DAILY PRECIPITATION 34.0 25.0 11.1 3.0 0.0 1.0 1.0 0.0 3.8 26.0 18.0 37.0 37.0 DAY 28 14 23 22 ** 13 13 ** 30 15 10 1 DAY WITH THUNDER STORM 0 0 0 1 0 2 1 0 1 1 1 0 7 DAYS WITH SNOW OR SLEET 14 12 5 0 0 0 0 0 0 1 11 13 56 DAYS WITH DUST 0 0 0 3 4 0 0 0 0 0 0 0 7 WIND DIRECTION (PREVAILING) 225 225 225 225 225 225 225 225 225 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 8.5 9.2 8.8 9.1 9.2 6.9 7.8 8.1 8.3 6.9 6.4 8.0 8.2 PREVAILING WIND PERCENT 5.2 6.9 19.4 26.0 25.8 20.7 22.6 20.6 18.0 14.8 7.3 3.2 15.9 CALMS PERCENT OF WIND 81.9 80.7 56.1 45.3 43.2 54.7 41.3 43.2 58.7 72.9 81.3 88.4 62.2 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 253 335 253 244 243 261 251 254 248 247 328 315 252 VECTOR WIND MAGNITUDE(KNOTS) 0.4 0.8 1.6 5.0 4.7 1.3 1.7 2.2 2.1 1.4 0.1 0.4 1.7 WIND STEADINESES (MEAN %) 23.5 36.4 41.0 90.9 87.0 31.7 31.5 45.8 53.8 60.9 6.7 30.8 48.6 WIND SPEED (MEAN KNOTS) 1.7 2.2 3.9 5.5 5.4 4.1 5.4 4.8 3.9 2.3 1.5 1.3 3.5 FASTEST WIND DIRECTION 10 20 360 210 250 360 10 10 360 360 10 10 20 FASTEST WIND SPEED (KNOTS) 29 33 19 29 19 33 33 19 29 19 16 23 33 DAY 30 7 26 10 1 13 12 2 11 1 6 16 DAYS WITH SKY CLEAR (0-2)/8 16 18 15 12 26 26 21 25 24 16 8 8 215 DAYS WITH P.CLOUDY (3-6)/8 3 5 11 11 3 4 10 6 4 7 8 11 83 DAYS WITH CLOUDY (7-8)/8 12 6 5 7 2 0 0 0 2 8 14 12 68 DAYS WITH VISIBILITY =< 2 KM 12 3 0 0 0 1 0 0 0 3 8 10 37 DURATION OF SUNSHINE HOURS 165.7 218.9 220.9 230.4 337.7 351.9 330.0 336.0 294.8 224.1 130.3 130.7 2971.4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 753.7 754.4 754.5 758.3 757.9 758.1 759.6 760.3 760.2 761.2 759.8 756.9 757.9 MAX. QFE PRESSURE IN HPA 762.7 760.6 761.0 761.5 762.8 762.7 765.7 764.3 765.3 764.3 766.3 763.9 766.3 DAY-HOUR 1- 6 11- 6 27- 6 3- 6 5- 6 30- 6 30- 6 23- 6 9- 6 16- 6 17- 6 4-15 MIN. QFE PRESSURE IN HPA 746.4 744.5 748.7 755.3 754.4 753.4 754.9 755.2 754.3 757.6 754.4 748.6 744.5 DAY-HOUR 21- 3 7-12 2- 6 10-12 20- 3 26-12 11-15 30-15 1-12 1-12 21-12 15-12 MEAN QNH PRESSURE IN HPA 1017.6 1018.5 1018.7 1023.5 1022.9 1023.1 1025.1 1026.0 1025.9 1027.1 1025.4 1021.6 1023.0 MAX. QNH PRESSURE IN HPA 1029.1 1026.4 1026.9 1027.5 1029.2 1029.1 1032.9 1031.1 1032.4 1031.1 1033.7 1030.6 1033.7 DAY-HOUR 1- 6 11- 6 27- 6 3- 6 5- 6 30- 6 30- 6 23- 6 9- 6 16- 6 17- 6 4-15 MIN. QNH PRESSURE IN HPA 1008.3 1005.8 1011.2 1019.6 1018.5 1017.2 1019.1 1019.5 1018.3 1022.6 1018.5 1011.1 1005.8 DAY-HOUR 21- 3 7-12 2- 6 10-12 20- 3 26-12 11-15 30-15 1-12 1-12 21-12 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 753.5 754.0 754.4 758.1 757.9 758.1 759.7 760.5 760.3 761.0 759.5 756.5 757.8 MAX. QFE PRESSURE IN HPA 761.9 760.0 760.0 760.7 761.8 762.4 764.8 763.4 764.5 763.4 765.6 762.1 765.6 DAY 1 11 27 3 5 30 31 23 9 8 17 4 MIN. QFE PRESSURE IN HPA 746.4 745.0 748.7 755.6 754.4 753.9 756.0 755.3 754.9 758.2 754.4 749.4 745.0 DAY 21 7 9 11 20 26 11 31 1 1 22 16 MEAN QNH PRESSURE IN HPA 1017.4 1018.0 1018.5 1023.2 1022.9 1023.2 1025.3 1026.3 1026.0 1026.9 1025.0 1021.2 1022.8 MAX. QNH PRESSURE IN HPA 1028.0 1025.6 1025.6 1026.5 1027.9 1028.7 1031.7 1030.0 1031.4 1030.0 1032.8 1028.3 1032.8 DAY 1 11 27 3 5 30 31 23 9 8 17 4 MIN. QNH PRESSURE IN HPA 1008.3 1006.5 1011.2 1020.0 1018.5 1017.8 1020.5 1019.6 1019.1 1023.3 1018.5 1012.1 1006.5 DAY 21 7 9 11 20 26 11 31 1 1 22 16 MEAN QFF PRESSURE IN HPA 1021.6 1021.8 1018.1 1011.9 1006.1 1003.1 1003.3 1004.5 1008.1 1018.0 1023.9 1022.2 1013.6 MAX. QFF PRESSURE IN HPA 1032.2 1030.7 1027.1 1019.1 1010.7 1012.8 1010.6 1009.0 1017.6 1024.7 1035.5 1032.0 1035.5 DAY 31 11 4 2 5 14 30 21 26 16 17 4 MIN. QFF PRESSURE IN HPA 1011.4 1008.6 1007.9 1004.3 997.7 994.3 995.5 997.4 998.7 1011.5 1016.0 1012.4 994.3 DAY 28 7 25 21 27 25 11 31 1 1 6 11 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 754.5 755.0 755.2 759.0 758.5 758.6 760.2 761.1 761.1 761.9 760.5 757.6 758.6 MAX. QFE PRESSURE IN HPA 762.7 760.6 761.0 761.5 762.8 762.7 765.7 764.3 765.3 764.3 766.3 763.7 766.3 DAY 1 11 27 3 5 30 30 23 9 16 17 4 MIN. QFE PRESSURE IN HPA 747.2 745.0 748.7 756.3 755.0 754.0 756.2 756.7 755.7 758.7 755.6 750.2 745.0 DAY 21 7 2 11 20 26 11 31 1 1 22 15 MEAN QNH PRESSURE IN HPA 1018.6 1019.2 1019.4 1024.3 1023.7 1023.9 1025.9 1027.0 1027.0 1028.0 1026.2 1022.6 1023.8 MAX. QNH PRESSURE IN HPA 1029.1 1026.4 1026.9 1027.5 1029.2 1029.1 1032.9 1031.1 1032.4 1031.1 1033.7 1030.3 1033.7 DAY 1 11 27 3 5 30 30 23 9 16 17 4 MIN. QNH PRESSURE IN HPA 1009.3 1006.5 1011.2 1020.9 1019.2 1018.0 1020.8 1021.4 1020.1 1024.0 1020.0 1013.1 1006.5 DAY 21 7 2 11 20 26 11 31 1 1 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 753.9 754.7 754.9 758.7 758.2 758.4 759.9 760.6 760.5 761.3 759.9 756.8 758.2 MAX. QFE PRESSURE IN HPA 761.2 760.2 760.0 761.2 762.8 762.5 765.1 763.8 764.7 763.9 766.0 763.0 766.0 DAY 1 29 27 2 5 30 30 23 9 16 17 4 MIN. QFE PRESSURE IN HPA 746.9 745.0 748.8 756.2 754.7 754.0 755.9 756.1 755.1 758.2 755.1 749.0 745.0 DAY 21 7 2 11 20 26 11 31 1 1 21 15 MEAN QNH PRESSURE IN HPA 1017.9 1018.9 1019.1 1023.9 1023.4 1023.6 1025.5 1026.4 1026.3 1027.3 1025.5 1021.5 1023.3 MAX. QNH PRESSURE IN HPA 1027.1 1025.9 1025.6 1027.1 1029.2 1028.8 1032.1 1030.5 1031.6 1030.6 1033.3 1029.4 1033.3 DAY 1 29 27 2 5 30 30 23 9 16 17 4 MIN. QNH PRESSURE IN HPA 1008.9 1006.5 1011.3 1020.8 1018.9 1018.0 1020.4 1020.6 1019.4 1023.3 1019.4 1011.6 1006.5 DAY 21 7 2 11 20 26 11 31 1 1 21 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 753.2 754.0 754.0 757.9 757.4 757.7 759.2 759.7 759.7 760.7 759.4 756.5 757.5 MAX. QFE PRESSURE IN HPA 760.3 759.0 758.8 760.2 761.9 761.7 764.9 762.9 764.4 763.4 765.6 762.4 765.6 DAY 1 29 27 2 5 30 30 20 29 30 17 4 MIN. QFE PRESSURE IN HPA 746.6 744.5 748.7 755.3 754.6 753.4 755.3 755.2 754.3 757.6 754.4 748.6 744.5 DAY 21 7 2 10 27 26 11 31 1 1 21 15 MEAN QNH PRESSURE IN HPA 1017.0 1017.9 1018.0 1023.0 1022.4 1022.7 1024.6 1025.3 1025.2 1026.6 1024.9 1021.2 1022.4 MAX. QNH PRESSURE IN HPA 1026.0 1024.3 1024.1 1025.9 1028.0 1027.8 1031.9 1029.3 1031.2 1030.0 1032.8 1028.7 1032.8 DAY 1 29 27 2 5 30 30 20 29 30 17 4 MIN. QNH PRESSURE IN HPA 1008.5 1005.8 1011.2 1019.6 1018.7 1017.2 1019.6 1019.5 1018.3 1022.6 1018.5 1011.1 1005.8 DAY 21 7 2 10 27 26 11 31 1 1 21 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 ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 753.5 754.4 754.3 757.9 757.3 757.5 759.1 759.7 759.7 761.0 759.9 757.0 757.6 MAX. QFE PRESSURE IN HPA 760.4 759.3 758.6 760.1 761.7 761.4 764.7 762.6 764.4 763.4 765.0 763.9 765.0 DAY 1 10 21 2 5 30 30 20 29 30 17 4 MIN. QFE PRESSURE IN HPA 747.1 746.0 749.0 755.7 754.7 753.5 754.9 755.2 754.5 757.9 754.8 749.4 746.0 DAY 21 7 13 10 17 24 11 30 1 1 21 15 MEAN QNH PRESSURE IN HPA 1017.4 1018.5 1018.3 1023.0 1022.2 1022.4 1024.5 1025.2 1025.2 1026.9 1025.4 1021.8 1022.6 MAX. QNH PRESSURE IN HPA 1026.1 1024.7 1023.8 1025.7 1027.8 1027.4 1031.6 1028.9 1031.2 1030.0 1032.0 1030.6 1032.0 DAY 1 10 21 2 5 30 30 20 29 30 17 4 MIN. QNH PRESSURE IN HPA 1009.2 1007.8 1011.6 1020.1 1018.9 1017.3 1019.1 1019.5 1018.6 1022.9 1019.0 1012.1 1007.8 DAY 21 7 13 10 17 24 11 30 1 1 21 15 MEAN QFF PRESSURE IN HPA 1021.7 1022.2 1017.7 1011.6 1005.4 1002.3 1002.5 1003.4 1007.4 1018.0 1024.3 1022.8 1013.3 MAX. QFF PRESSURE IN HPA 1031.3 1030.7 1027.7 1018.1 1010.9 1013.7 1011.0 1008.6 1017.4 1023.9 1034.7 1033.2 1034.7 DAY 30 10 3 2 2 13 30 20 25 5 17 4 MIN. QFF PRESSURE IN HPA 1012.5 1013.4 1006.5 1006.4 998.2 992.6 994.3 997.1 999.1 1011.5 1016.2 1011.4 992.6 DAY 21 7 24 10 26 24 11 3 2 1 2 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 ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -2.5 -0.9 5.2 11.8 15.3 20.9 22.6 22.6 17.9 11.7 4.5 1.2 10.9 MINIMUN AIR TEMPERATURE (C) -6.5 -5.5 -0.2 5.2 8.4 12.7 14.9 15.3 11.4 6.5 0.1 -2.5 5.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 23 21 3 0 0 0 0 0 0 0 6 7 60 DAYS WITH FREEZING MIN.<= 0 31 28 16 0 0 0 0 0 0 0 13 27 115 TEMPERATURE RECORDS LOWEST(C) -14.4 -11.0 -10.0 0.4 4.0 0.5 11.0 11.0 5.6 3.0 -9.2 -8.8 -14.4 DAY 28 23 11 13 4 12 18 12 20 31 20 17 MAXIMUM AIR TEMPERATURE (C) 1.0 2.1 8.9 15.8 18.5 24.3 26.4 26.6 21.8 15.3 7.6 4.1 14.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 3 1 3 0 0 0 0 7 DAYS WITH MAXIMUM TEMP. <= 0 11 6 2 0 0 0 0 0 0 0 2 0 21 TEMPERATURE RECORDS HIGHEST(C) 7.0 8.6 16.2 20.4 24.6 30.5 30.6 30.5 25.2 20.4 14.8 8.4 30.6 DAY 11 28 31 5 15 29 10 3 5 1 5 31 DIF. BETWEEN (MAX.-MIN.) (C) 7.5 7.6 9.1 10.6 10.1 11.6 11.5 11.3 10.4 8.8 7.5 6.6 9.4 MEAN DAILY TEMP. (MDT) (C) -2.7 -1.7 4.4 10.5 13.4 18.5 20.6 21.0 16.6 10.9 3.8 0.8 9.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 16.7 21.6 29.8 0.0 0.0 0.0 0.0 68.1 HEATING DEG. DAYS(BASE 18 0C) 643.2 551.7 422.5 223.8 142.9 42.3 3.5 6.4 53.0 219.7 425.1 533.3 3267.3 DEWPOINT (MEAN C) -8.0 -7.2 -4.1 -4.6 -1.6 -0.8 3.6 1.2 -0.2 -1.2 -4.7 -3.8 -2.6 MIXING RATIO (G/KG) 2.86 3.02 3.84 3.70 4.65 4.99 6.76 5.78 5.13 4.83 3.73 3.96 4.44 VAPOUR PRESSURE (HPA) 3.46 3.65 4.64 4.48 5.62 6.03 8.14 7.00 6.22 5.87 4.52 4.80 5.37 SATURATION DEF. (HPA) 1.82 2.21 4.60 9.71 12.23 19.70 19.95 21.09 14.95 8.23 4.25 1.98 10.06 RELATIVE HUMIDITY (MEAN %) 68 64 54 33 34 27 31 28 34 45 55 71 45 RELATIVE HUMIDITY (MAX. %) 79 74 68 47 46 38 44 40 47 60 66 82 58 RELATIVE HUMIDITY (MIN. %) 59 56 43 24 25 21 24 21 25 34 44 61 36 RELATIVE HUMIDITY (MEAN% 03UTC) 64 66 60 43 44 37 44 39 45 56 59 72 52 RELATIVE HUMIDITY (MEAN% 09UTC) 64 60 51 29 32 25 27 24 28 40 50 66 41 RELATIVE HUMIDITY (MEAN% 15UTC) 76 69 57 34 30 25 28 26 34 48 62 78 47 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 24.6 14.7 58.8 12.4 52.6 15.3 5.3 20.8 56.3 34.7 47.7 86.2 429.4 DAYS WITH PRECIPITATION >=10 0 0 2 0 2 0 0 1 1 0 1 4 11 DAYS WITH PRECIPITATION >= 5 1 0 3 0 4 1 0 1 2 3 3 8 26 DAYS WITH PRECIPITATION >= 1 6 5 5 4 5 3 2 4 2 6 8 11 61 DAYS WITH PRECIPITATION 9 9 10 7 6 4 7 5 4 11 14 15 101 GREATEST DAILY PRECIPITATION 7.0 4.2 31.0 4.0 26.1 8.0 2.0 14.0 46.0 9.0 13.5 23.7 46.0 DAY 20 4 10 10 4 14 16 12 20 23 19 5 DAY WITH THUNDER STORM 0 0 1 2 4 3 0 5 3 5 0 1 24 DAYS WITH SNOW OR SLEET 10 6 5 0 0 0 0 0 0 0 9 14 44 DAYS WITH DUST 0 0 0 0 3 0 0 0 0 0 0 1 4 WIND DIRECTION (PREVAILING) 225 225 225 225 270 225 270 225 225 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 7.3 9.3 7.7 9.8 10.6 8.5 7.3 8.0 7.5 8.3 6.5 7.9 8.3 PREVAILING WIND PERCENT 7.7 17.9 19.4 28.0 27.1 20.7 20.6 27.1 22.7 26.5 10.7 11.6 19.2 CALMS PERCENT OF WIND 83.2 67.1 62.6 44.7 41.9 43.3 41.9 43.2 57.3 59.4 77.3 85.2 58.9 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 353 240 259 248 244 264 240 247 243 244 271 238 250 VECTOR WIND MAGNITUDE(KNOTS) 1.3 2.5 1.8 3.9 4.1 2.1 2.1 2.8 2.1 3.0 0.7 1.1 2.1 WIND STEADINESES (MEAN %) 56.5 78.1 52.9 69.6 75.9 40.4 45.7 57.1 60.0 73.2 43.8 91.7 55.3 WIND SPEED (MEAN KNOTS) 2.3 3.2 3.4 5.6 5.4 5.2 4.6 4.9 3.5 4.1 1.6 1.2 3.8 FASTEST WIND DIRECTION 10 240 360 270 240 10 80 10 10 10 10 250 10 FASTEST WIND SPEED (KNOTS) 39 29 29 23 29 29 16 29 29 29 19 19 39 DAY 27 21 10 12 30 11 9 10 18 2 1 21 DAYS WITH SKY CLEAR (0-2)/8 14 12 11 12 15 22 22 27 22 18 11 10 196 DAYS WITH P.CLOUDY (3-6)/8 7 11 12 11 11 7 9 4 6 12 12 10 112 DAYS WITH CLOUDY (7-8)/8 10 5 8 7 5 1 0 0 2 1 7 11 57 DAYS WITH VISIBILITY =< 2 KM 10 6 4 0 0 0 0 0 0 1 3 9 33 DURATION OF SUNSHINE HOURS 169.4 184.1 219.4 248.7 302.2 349.3 338.5 346.8 286.3 262.5 167.4 149.1 3023.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 756.4 754.8 756.2 757.7 757.6 757.6 758.1 760.6 761.0 761.2 758.8 758.6 758.2 MAX. QFE PRESSURE IN HPA 760.1 763.0 764.2 765.4 762.6 763.3 763.5 765.3 765.0 768.0 765.2 763.5 768.0 DAY-HOUR 10- 6 9- 9 1- 6 2- 6 16- 6 2- 9 28- 6 5- 6 22- 6 10- 6 5- 6 29- 6 MIN. QFE PRESSURE IN HPA 752.3 741.3 745.5 750.5 751.3 752.5 751.8 755.1 756.6 755.2 748.3 751.5 741.3 DAY-HOUR 19-12 21-12 26- 3 12-15 8-15 17-15 18-12 27-12 5-15 31-12 18-15 5-12 MEAN QNH PRESSURE IN HPA 1021.0 1018.9 1020.8 1022.7 1022.6 1022.5 1023.1 1026.4 1026.9 1027.2 1024.1 1023.8 1023.3 MAX. QNH PRESSURE IN HPA 1025.7 1029.4 1031.0 1032.5 1028.9 1029.8 1030.1 1032.4 1032.0 1035.8 1032.2 1030.1 1035.8 DAY-HOUR 10- 6 9- 9 1- 6 2- 6 16- 6 2- 9 28- 6 5- 6 22- 6 10- 6 5- 6 29- 6 MIN. QNH PRESSURE IN HPA 1015.8 1001.8 1007.1 1013.5 1014.5 1016.1 1015.2 1019.4 1021.3 1019.5 1010.7 1014.8 1001.8 DAY-HOUR 19-12 21-12 26- 3 12-15 8-15 17-15 18-12 27-12 5-15 31-12 18-15 5-12 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 756.1 754.4 756.0 757.6 757.6 757.6 758.2 760.7 761.0 761.1 758.5 758.4 758.1 MAX. QFE PRESSURE IN HPA 759.7 762.0 763.8 765.0 762.0 762.3 762.8 764.4 764.0 767.3 764.2 762.7 767.3 DAY 14 10 2 2 15 2 28 5 22 10 5 29 MIN. QFE PRESSURE IN HPA 752.3 743.0 745.5 751.3 751.7 752.8 752.4 756.0 757.0 756.4 749.7 751.9 743.0 DAY 24 22 26 13 9 18 18 27 1 31 19 5 MEAN QNH PRESSURE IN HPA 1020.6 1018.5 1020.6 1022.6 1022.6 1022.6 1023.3 1026.5 1026.9 1027.0 1023.7 1023.6 1023.2 MAX. QNH PRESSURE IN HPA 1025.2 1028.2 1030.5 1032.0 1028.2 1028.5 1029.2 1031.2 1030.7 1034.9 1031.0 1029.1 1034.9 DAY 14 10 2 2 15 2 28 5 22 10 5 29 MIN. QNH PRESSURE IN HPA 1015.8 1003.9 1007.1 1014.5 1015.0 1016.4 1015.9 1020.5 1021.8 1021.0 1012.5 1015.3 1003.9 DAY 24 22 26 13 9 18 18 27 1 31 19 5 MEAN QFF PRESSURE IN HPA 1024.1 1020.4 1016.0 1011.5 1007.3 1002.1 1000.9 1004.7 1009.9 1015.9 1019.8 1022.9 1013.0 MAX. QFF PRESSURE IN HPA 1030.7 1030.4 1027.0 1021.2 1013.1 1013.0 1007.8 1011.7 1020.1 1024.9 1031.2 1029.2 1031.2 DAY 29 10 12 2 12 13 29 12 22 10 20 22 MIN. QFF PRESSURE IN HPA 1017.9 1005.6 1000.6 1005.0 997.1 994.9 993.0 997.7 1002.3 1007.8 1008.5 1014.7 993.0 DAY 4 21 25 13 30 18 10 27 5 1 18 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 757.0 755.4 756.9 758.4 758.2 758.1 758.6 761.3 761.7 762.0 759.4 759.3 758.9 MAX. QFE PRESSURE IN HPA 760.1 762.5 764.2 765.4 762.6 763.2 763.5 765.3 765.0 768.0 765.2 763.5 768.0 DAY 10 10 1 2 16 2 28 5 22 10 5 29 MIN. QFE PRESSURE IN HPA 753.3 744.6 746.4 752.9 752.5 753.3 752.5 756.2 758.0 757.2 750.3 752.4 744.6 DAY 19 22 26 13 9 18 18 27 1 31 18 5 MEAN QNH PRESSURE IN HPA 1021.8 1019.7 1021.7 1023.6 1023.3 1023.2 1023.9 1027.3 1027.8 1028.2 1024.9 1024.8 1024.2 MAX. QNH PRESSURE IN HPA 1025.7 1028.8 1031.0 1032.5 1028.9 1029.7 1030.1 1032.4 1032.0 1035.8 1032.2 1030.1 1035.8 DAY 10 10 1 2 16 2 28 5 22 10 5 29 MIN. QNH PRESSURE IN HPA 1017.1 1006.0 1008.3 1016.6 1016.1 1017.1 1016.1 1020.8 1023.1 1022.0 1013.2 1015.9 1006.0 DAY 19 22 26 13 9 18 18 27 1 31 18 5 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 756.6 755.1 756.6 758.0 758.0 757.9 758.4 761.0 761.3 761.4 758.9 758.7 758.5 MAX. QFE PRESSURE IN HPA 759.7 763.0 764.2 764.9 762.6 763.3 763.0 765.1 765.0 767.5 764.8 763.0 767.5 DAY 9 9 1 2 16 2 28 5 22 10 2 9 MIN. QFE PRESSURE IN HPA 753.0 744.0 746.9 752.7 752.2 753.1 752.3 755.8 757.8 756.0 749.0 752.4 744.0 DAY 19 21 26 13 8 18 18 27 5 31 18 5 MEAN QNH PRESSURE IN HPA 1021.3 1019.4 1021.3 1023.1 1023.0 1023.0 1023.6 1026.8 1027.3 1027.4 1024.2 1024.0 1023.7 MAX. QNH PRESSURE IN HPA 1025.2 1029.4 1031.0 1031.9 1028.9 1029.8 1029.4 1032.1 1032.0 1035.2 1031.7 1029.4 1035.2 DAY 9 9 1 2 16 2 28 5 22 10 2 9 MIN. QNH PRESSURE IN HPA 1016.7 1005.2 1008.9 1016.3 1015.7 1016.8 1015.8 1020.3 1022.8 1020.5 1011.6 1015.9 1005.2 DAY 19 21 26 13 8 18 18 27 5 31 18 5 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 756.0 754.4 755.6 757.2 757.3 757.2 757.6 760.1 760.5 760.7 758.4 758.1 757.8 MAX. QFE PRESSURE IN HPA 759.1 762.2 763.6 764.0 762.0 762.2 762.1 764.2 764.0 766.7 764.2 762.4 766.7 DAY 9 9 1 1 16 2 28 5 22 10 4 9 MIN. QFE PRESSURE IN HPA 752.3 741.3 746.1 751.2 751.7 752.8 751.8 755.1 756.8 755.2 748.6 751.5 741.3 DAY 19 21 25 12 8 17 18 27 5 31 18 5 MEAN QNH PRESSURE IN HPA 1020.5 1018.4 1020.0 1022.0 1022.1 1022.1 1022.6 1025.8 1026.3 1026.6 1023.6 1023.2 1022.8 MAX. QNH PRESSURE IN HPA 1024.5 1028.4 1030.2 1030.7 1028.2 1028.4 1028.3 1031.0 1030.7 1034.2 1031.0 1028.7 1034.2 DAY 9 9 1 1 16 2 28 5 22 10 4 9 MIN. QNH PRESSURE IN HPA 1015.8 1001.8 1007.9 1014.4 1015.0 1016.4 1015.2 1019.4 1021.5 1019.5 1011.1 1014.8 1001.8 DAY 19 21 25 12 8 17 18 27 5 31 18 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 756.4 754.5 755.9 757.3 757.2 757.1 757.5 760.1 760.5 760.8 758.9 758.5 757.9 MAX. QFE PRESSURE IN HPA 759.3 761.7 764.1 764.4 761.6 762.0 762.1 763.9 764.0 766.7 764.7 762.8 766.7 DAY 9 9 1 1 16 2 28 5 22 10 4 9 MIN. QFE PRESSURE IN HPA 752.9 741.6 745.9 750.5 751.3 752.5 752.1 755.4 756.6 755.2 748.3 752.5 741.6 DAY 19 21 25 12 8 17 18 27 5 31 18 5 MEAN QNH PRESSURE IN HPA 1021.0 1018.7 1020.4 1022.1 1022.0 1021.9 1022.5 1025.7 1026.3 1026.6 1024.2 1023.7 1022.9 MAX. QNH PRESSURE IN HPA 1024.7 1027.8 1030.8 1031.2 1027.7 1028.2 1028.3 1030.6 1030.7 1034.2 1031.6 1029.2 1034.2 DAY 9 9 1 1 16 2 28 5 22 10 4 9 MIN. QNH PRESSURE IN HPA 1016.6 1002.1 1007.6 1013.5 1014.5 1016.1 1015.5 1019.8 1021.3 1019.5 1010.7 1016.1 1002.1 DAY 19 21 25 12 8 17 18 27 5 31 18 5 MEAN QFF PRESSURE IN HPA 1024.5 1020.2 1015.7 1010.9 1006.7 1001.5 1000.1 1004.0 1009.3 1015.6 1020.4 1022.8 1012.7 MAX. QFF PRESSURE IN HPA 1030.1 1031.6 1027.6 1020.1 1010.9 1012.8 1007.4 1011.8 1018.8 1024.8 1029.8 1031.8 1031.8 DAY 28 9 11 1 5 12 28 10 22 10 20 22 MIN. QFF PRESSURE IN HPA 1017.4 1001.7 1000.6 1002.5 998.3 993.3 990.9 997.6 1000.8 1007.5 1007.3 1015.2 990.9 DAY 4 21 25 12 29 6 10 24 5 1 18 20 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 ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -2.9 0.2 5.1 6.4 13.7 19.5 21.8 23.6 20.8 14.6 4.3 -3.7 10.3 MINIMUN AIR TEMPERATURE (C) -7.1 -4.3 -0.5 1.9 7.1 11.4 15.0 15.8 14.0 8.6 0.3 -7.1 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 12 6 1 0 0 0 0 0 0 4 24 71 DAYS WITH FREEZING MIN.<= 0 29 28 15 10 0 0 0 0 0 0 16 31 129 TEMPERATURE RECORDS LOWEST(C) -13.0 -9.5 -6.0 -5.2 1.5 5.2 11.0 11.5 9.2 3.4 -6.0 -13.0 -13.0 DAY 13 1 10 4 14 4 2 1 26 31 30 14 MAXIMUM AIR TEMPERATURE (C) 0.7 3.7 9.1 9.7 16.7 22.9 25.6 27.3 24.6 18.5 7.7 -0.9 13.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 0 4 0 0 0 0 4 DAYS WITH MAXIMUM TEMP. <= 0 15 5 0 0 0 0 0 0 0 0 2 21 43 TEMPERATURE RECORDS HIGHEST(C) 7.0 9.6 15.0 17.4 23.0 27.0 29.4 31.0 27.2 22.8 13.2 4.2 31.0 DAY 1 7 27 28 30 28 19 10 3 10 11 7 DIF. BETWEEN (MAX.-MIN.) (C) 7.8 8.0 9.6 7.8 9.6 11.5 10.6 11.5 10.6 9.9 7.4 6.2 9.2 MEAN DAILY TEMP. (MDT) (C) -3.2 -0.3 4.3 5.8 11.9 17.1 20.3 21.6 19.3 13.6 4.0 -4.0 9.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 1.0 17.5 37.1 2.0 0.0 0.0 0.0 57.6 HEATING DEG. DAYS(BASE 18 0C) 656.0 512.6 424.3 365.8 188.7 45.8 2.6 1.6 8.5 137.2 420.6 682.2 3446.1 DEWPOINT (MEAN C) -8.1 -7.6 -6.8 -0.5 -1.2 -1.3 3.6 2.0 -3.2 -3.1 -4.1 -7.6 -3.2 MIXING RATIO (G/KG) 2.93 2.93 3.24 5.04 4.74 4.75 6.71 6.09 4.09 4.08 3.89 3.07 4.30 VAPOUR PRESSURE (HPA) 3.53 3.54 3.91 6.07 5.72 5.74 8.10 7.36 4.97 4.96 4.72 3.71 5.19 SATURATION DEF. (HPA) 1.61 2.89 5.26 3.93 10.47 17.39 18.58 22.41 20.11 12.25 3.84 1.06 9.98 RELATIVE HUMIDITY (MEAN %) 69 58 46 65 39 26 33 27 21 32 58 77 46 RELATIVE HUMIDITY (MAX. %) 80 69 59 77 51 37 44 39 29 43 73 83 57 RELATIVE HUMIDITY (MIN. %) 59 49 36 54 30 19 25 21 16 24 48 69 38 RELATIVE HUMIDITY (MEAN% 03UTC) 68 61 53 72 48 37 44 39 29 41 62 75 52 RELATIVE HUMIDITY (MEAN% 09UTC) 65 57 40 63 36 23 29 24 17 26 52 76 42 RELATIVE HUMIDITY (MEAN% 15UTC) 76 58 49 63 36 22 31 24 22 36 67 78 47 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 99.6 16.4 64.9 131.2 25.5 0.0 13.9 2.0 0.0 0.5 57.8 145.2 557.0 DAYS WITH PRECIPITATION >=10 3 0 3 3 1 0 0 0 0 0 1 5 16 DAYS WITH PRECIPITATION >= 5 6 2 4 9 2 0 2 0 0 0 7 10 42 DAYS WITH PRECIPITATION >= 1 13 4 7 18 4 0 3 1 0 0 8 16 74 DAYS WITH PRECIPITATION 16 8 9 23 7 0 6 2 2 3 13 19 108 GREATEST DAILY PRECIPITATION 43.0 8.0 26.0 26.0 16.0 0.0 7.0 2.0 0.0 0.3 10.0 24.0 43.0 DAY 8 14 19 13 4 ** 23 1 ** 30 15 10 DAY WITH THUNDER STORM 0 0 0 3 3 0 3 2 1 0 1 4 17 DAYS WITH SNOW OR SLEET 13 6 4 6 0 0 0 0 0 0 8 19 56 DAYS WITH DUST 0 0 0 0 0 1 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 225 225 225 225 270 225 225 225 225 270 225 225 225 PREVAILING WIND SPEED(KNOTS) 6.0 8.3 7.7 10.2 10.4 9.3 7.0 7.7 7.9 8.1 7.7 7.9 8.3 PREVAILING WIND PERCENT 5.8 14.3 16.8 18.7 21.3 24.7 13.5 19.4 26.7 18.7 18.7 9.7 17.1 CALMS PERCENT OF WIND 83.9 64.3 60.6 64.7 52.3 48.7 53.5 50.3 56.0 56.8 64.0 76.1 60.9 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 292 270 259 238 245 255 322 245 241 247 281 262 253 VECTOR WIND MAGNITUDE(KNOTS) 0.7 1.4 1.5 2.8 4.1 3.5 0.5 2.3 2.7 2.5 1.0 1.2 1.9 WIND STEADINESES (MEAN %) 43.8 40.0 38.5 84.8 83.7 64.8 12.2 56.1 77.1 73.5 29.4 54.5 52.8 WIND SPEED (MEAN KNOTS) 1.6 3.5 3.9 3.3 4.9 5.4 4.1 4.1 3.5 3.4 3.4 2.2 3.6 FASTEST WIND DIRECTION 360 20 360 250 240 360 10 30 220 30 10 10 360 FASTEST WIND SPEED (KNOTS) 39 25 39 19 29 29 25 16 16 19 19 23 39 DAY 27 28 6 7 25 22 27 1 16 22 7 29 DAYS WITH SKY CLEAR (0-2)/8 11 11 11 3 18 25 13 25 26 18 14 9 184 DAYS WITH P.CLOUDY (3-6)/8 11 11 10 11 9 5 18 6 4 11 5 7 108 DAYS WITH CLOUDY (7-8)/8 9 6 10 16 4 0 0 0 0 2 11 15 73 DAYS WITH VISIBILITY =< 2 KM 13 5 3 6 1 0 0 0 0 0 1 13 42 DURATION OF SUNSHINE HOURS 161.6 204.0 234.3 139.8 289.8 350.2 280.5 350.3 317.9 271.2 170.5 122.7 2892.8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 755.5 755.9 756.2 754.8 757.5 758.0 759.5 759.0 762.4 762.6 760.3 754.9 758.1 MAX. QFE PRESSURE IN HPA 762.1 764.1 765.1 761.9 762.2 763.8 763.2 762.4 766.6 768.7 766.3 763.6 768.7 DAY-HOUR 27-15 6- 6 13- 6 1- 9 24- 6 25- 6 3- 6 31- 6 21- 6 10- 6 18- 9 3- 6 MIN. QFE PRESSURE IN HPA 748.6 749.6 748.4 743.9 753.0 751.2 753.9 754.5 758.9 757.3 754.7 743.9 743.9 DAY-HOUR 22- 3 25-12 22-15 4- 3 12-15 20-15 24-15 17-15 18-12 22- 3 13- 3 21-15 MEAN QNH PRESSURE IN HPA 1019.8 1020.4 1020.8 1019.0 1022.4 1023.0 1025.0 1024.4 1028.7 1028.9 1026.0 1019.1 1023.1 MAX. QNH PRESSURE IN HPA 1028.3 1030.8 1032.1 1028.0 1028.4 1030.5 1029.7 1028.7 1034.0 1036.7 1033.7 1030.2 1036.7 DAY-HOUR 27-15 6- 6 13- 6 1- 9 24- 6 25- 6 3- 6 31- 6 21- 6 10- 6 18- 9 3- 6 MIN. QNH PRESSURE IN HPA 1011.1 1012.4 1010.8 1005.1 1016.7 1014.4 1017.8 1018.6 1024.2 1022.2 1018.9 1005.1 1005.1 DAY-HOUR 22- 3 25-12 22-15 4- 3 12-15 20-15 24-15 17-15 18-12 22- 3 13- 3 21-15 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 755.1 755.3 755.8 754.6 757.3 758.1 759.5 759.1 762.4 762.5 760.1 754.5 757.9 MAX. QFE PRESSURE IN HPA 760.3 762.6 764.0 760.5 761.2 762.9 762.7 762.0 765.9 767.7 765.2 762.2 767.7 DAY 26 6 11 1 24 25 3 25 23 10 18 3 MIN. QFE PRESSURE IN HPA 748.6 750.5 749.1 743.9 753.2 751.7 755.5 755.2 759.4 757.3 754.7 745.1 743.9 DAY 22 27 23 4 13 21 24 17 18 22 13 22 MEAN QNH PRESSURE IN HPA 1019.4 1019.6 1020.3 1018.7 1022.2 1023.2 1025.0 1024.5 1028.7 1028.8 1025.8 1018.6 1022.9 MAX. QNH PRESSURE IN HPA 1026.0 1028.9 1030.7 1026.3 1027.1 1029.3 1029.1 1028.2 1033.1 1035.4 1032.2 1028.4 1035.4 DAY 26 6 11 1 24 25 3 25 23 10 18 3 MIN. QNH PRESSURE IN HPA 1011.1 1013.5 1011.7 1005.1 1016.9 1015.0 1019.9 1019.5 1024.9 1022.2 1018.9 1006.6 1005.1 DAY 22 27 23 4 13 21 24 17 18 22 13 22 MEAN QFF PRESSURE IN HPA 1023.1 1020.2 1016.0 1011.9 1008.2 1003.8 1003.4 1001.6 1009.4 1015.6 1022.2 1022.6 1013.2 MAX. QFF PRESSURE IN HPA 1033.7 1031.4 1032.0 1023.5 1013.4 1012.3 1008.7 1008.3 1016.4 1019.6 1031.4 1034.3 1034.3 DAY 26 19 11 1 14 25 31 31 30 23 18 30 MIN. QFF PRESSURE IN HPA 1009.1 1009.4 1006.3 1005.0 1000.6 994.5 997.2 995.3 1003.4 1009.8 1011.5 1008.1 994.5 DAY 8 27 28 19 20 20 25 18 11 22 12 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 756.1 756.5 756.8 755.3 758.0 758.6 760.1 759.7 763.1 763.4 761.0 755.5 758.7 MAX. QFE PRESSURE IN HPA 761.6 764.1 765.1 761.7 762.2 763.8 763.2 762.4 766.6 768.7 766.2 763.6 768.7 DAY 27 6 13 1 24 25 3 31 21 10 18 3 MIN. QFE PRESSURE IN HPA 749.2 751.6 750.3 744.2 753.8 752.5 755.6 755.7 760.1 758.7 755.4 746.4 744.2 DAY 8 25 22 4 13 21 24 17 10 22 13 22 MEAN QNH PRESSURE IN HPA 1020.7 1021.1 1021.5 1019.6 1023.1 1023.8 1025.8 1025.2 1029.6 1029.9 1027.0 1019.9 1023.9 MAX. QNH PRESSURE IN HPA 1027.7 1030.8 1032.1 1027.8 1028.4 1030.5 1029.7 1028.7 1034.0 1036.7 1033.5 1030.2 1036.7 DAY 27 6 13 1 24 25 3 31 21 10 18 3 MIN. QNH PRESSURE IN HPA 1011.8 1014.9 1013.2 1005.5 1017.7 1016.1 1020.0 1020.1 1025.7 1024.0 1019.8 1008.3 1005.5 DAY 8 25 22 4 13 21 24 17 10 22 13 22 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 755.6 756.3 756.6 755.1 757.9 758.4 759.9 759.4 762.7 762.8 760.4 755.0 758.3 MAX. QFE PRESSURE IN HPA 761.8 763.5 764.8 761.9 761.7 763.5 762.9 762.4 766.2 768.4 766.3 763.0 768.4 DAY 27 6 12 1 17 25 3 31 21 10 18 3 MIN. QFE PRESSURE IN HPA 749.1 751.0 750.1 743.9 754.3 752.1 755.0 755.4 759.9 758.5 755.4 746.5 743.9 DAY 8 25 22 4 12 21 24 17 10 22 13 21 MEAN QNH PRESSURE IN HPA 1020.0 1020.9 1021.2 1019.3 1023.0 1023.6 1025.5 1024.8 1029.1 1029.2 1026.2 1019.2 1023.5 MAX. QNH PRESSURE IN HPA 1027.9 1030.1 1031.7 1028.0 1027.8 1030.1 1029.3 1028.7 1033.5 1036.3 1033.7 1029.4 1036.3 DAY 27 6 12 1 17 25 3 31 21 10 18 3 MIN. QNH PRESSURE IN HPA 1011.7 1014.1 1013.0 1005.1 1018.3 1015.5 1019.2 1019.8 1025.5 1023.7 1019.8 1008.4 1005.1 DAY 8 25 22 4 12 21 24 17 10 22 13 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 755.1 755.6 756.0 754.6 757.2 757.5 759.1 758.5 762.0 762.0 759.8 754.5 757.7 MAX. QFE PRESSURE IN HPA 761.5 763.0 764.3 761.1 761.0 762.6 761.9 761.3 765.3 767.4 765.6 762.4 767.4 DAY 27 6 12 1 17 25 3 31 21 10 18 3 MIN. QFE PRESSURE IN HPA 748.7 749.6 748.8 744.5 753.2 751.4 754.7 754.6 758.9 757.7 754.9 745.4 744.5 DAY 22 25 22 4 12 20 24 17 18 21 12 21 MEAN QNH PRESSURE IN HPA 1019.3 1020.0 1020.5 1018.8 1022.1 1022.5 1024.5 1023.7 1028.1 1028.2 1025.4 1018.6 1022.6 MAX. QNH PRESSURE IN HPA 1027.5 1029.4 1031.1 1027.0 1026.9 1028.9 1028.0 1027.3 1032.4 1035.1 1032.8 1028.7 1035.1 DAY 27 6 12 1 17 25 3 31 21 10 18 3 MIN. QNH PRESSURE IN HPA 1011.2 1012.4 1011.3 1005.8 1016.9 1014.6 1018.9 1018.7 1024.2 1022.7 1019.1 1007.0 1005.8 DAY 22 25 22 4 12 20 24 17 18 21 12 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 ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 755.5 756.0 756.1 754.7 757.2 757.3 759.0 758.4 762.0 762.3 760.2 754.9 757.8 MAX. QFE PRESSURE IN HPA 762.1 763.3 764.8 761.3 761.1 762.4 761.7 761.3 765.0 767.4 765.7 762.4 767.4 DAY 27 6 12 1 17 24 3 31 21 10 18 3 MIN. QFE PRESSURE IN HPA 749.4 750.0 748.4 745.6 753.0 751.2 753.9 754.5 759.1 757.4 755.7 743.9 743.9 DAY 22 27 22 4 12 20 24 17 18 21 13 21 MEAN QNH PRESSURE IN HPA 1019.8 1020.5 1020.6 1018.9 1022.0 1022.1 1024.3 1023.6 1028.2 1028.6 1025.9 1019.1 1022.8 MAX. QNH PRESSURE IN HPA 1028.3 1029.8 1031.7 1027.3 1027.0 1028.7 1027.8 1027.3 1032.0 1035.1 1032.9 1028.7 1035.1 DAY 27 6 12 1 17 24 3 31 21 10 18 3 MIN. QNH PRESSURE IN HPA 1012.1 1012.9 1010.8 1007.2 1016.7 1014.4 1017.8 1018.6 1024.5 1022.3 1020.1 1005.1 1005.1 DAY 22 27 22 4 12 20 24 17 18 21 13 21 MEAN QFF PRESSURE IN HPA 1023.7 1021.1 1016.2 1011.9 1007.9 1002.7 1002.7 1000.9 1009.0 1015.4 1022.4 1023.2 1013.1 MAX. QFF PRESSURE IN HPA 1032.6 1030.7 1030.2 1021.7 1013.1 1012.3 1008.9 1008.3 1015.3 1019.5 1032.1 1032.3 1032.6 DAY 27 4 11 1 9 24 29 31 30 31 18 14 MIN. QFF PRESSURE IN HPA 1013.2 1010.6 1006.3 1006.6 1000.5 993.7 995.8 994.9 1003.5 1010.5 1012.7 1001.8 993.7 DAY 7 26 28 3 29 19 24 17 10 21 12 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 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.6 -2.0 0.1 7.8 12.3 19.1 25.1 22.6 18.0 13.8 3.8 -1.1 9.8 MINIMUN AIR TEMPERATURE (C) -5.9 -6.0 -4.3 3.5 6.2 12.2 17.9 15.2 11.4 8.5 -0.6 -4.3 4.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 3 0 0 0 0 0 3 DAYS WITH MINIMUM TEMP. <=-4 24 22 16 0 0 0 0 0 0 0 8 16 86 DAYS WITH FREEZING MIN.<= 0 30 28 29 6 1 0 0 0 0 0 14 30 138 TEMPERATURE RECORDS LOWEST(C) -11.0 -12.2 -13.0 -3.0 -0.2 6.6 10.4 10.2 7.0 5.5 -6.0 -10.2 -13.0 DAY 21 18 2 2 9 7 1 21 27 31 17 12 MAXIMUM AIR TEMPERATURE (C) 2.0 1.3 3.3 10.8 15.8 22.3 28.6 26.4 22.0 17.5 7.4 1.9 13.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 8 0 0 0 0 0 8 DAYS WITH MAXIMUM TEMP. <= 0 11 10 2 0 0 0 0 0 0 0 0 9 32 TEMPERATURE RECORDS HIGHEST(C) 10.0 6.6 8.4 16.8 20.6 27.2 31.0 29.0 26.2 21.5 12.6 7.2 31.0 DAY 12 2 25 7 18 23 18 15 7 10 11 8 DIF. BETWEEN (MAX.-MIN.) (C) 7.9 7.3 7.6 7.3 9.6 10.1 10.7 11.2 10.6 9.0 8.0 6.2 8.8 MEAN DAILY TEMP. (MDT) (C) -2.0 -2.3 -0.5 7.2 11.0 17.3 23.3 20.8 16.7 13.0 3.4 -1.2 8.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 1.0 75.8 19.6 0.0 0.0 0.0 0.0 96.5 HEATING DEG. DAYS(BASE 18 0C) 618.8 569.7 572.5 324.6 216.6 44.9 1.0 1.2 53.2 154.8 437.9 595.7 3591.1 DEWPOINT (MEAN C) -8.0 -8.0 -5.7 -0.6 -1.3 2.2 3.5 2.0 -1.6 -3.2 -6.9 -5.3 -2.7 MIXING RATIO (G/KG) 2.85 2.90 3.50 4.98 4.84 6.07 6.67 6.00 4.66 4.12 3.20 3.59 4.45 VAPOUR PRESSURE (HPA) 3.45 3.49 4.22 6.01 5.86 7.32 8.03 7.26 5.66 5.01 3.89 4.34 5.38 SATURATION DEF. (HPA) 2.19 1.93 2.12 4.95 8.82 15.33 24.39 20.75 15.62 11.10 4.42 1.48 9.43 RELATIVE HUMIDITY (MEAN %) 64 66 67 60 41 34 26 28 29 34 49 75 48 RELATIVE HUMIDITY (MAX. %) 75 79 79 72 53 46 38 39 42 46 61 85 60 RELATIVE HUMIDITY (MIN. %) 54 55 57 49 32 25 20 21 22 25 40 66 39 RELATIVE HUMIDITY (MEAN% 03UTC) 62 66 69 65 48 45 38 39 40 42 55 75 54 RELATIVE HUMIDITY (MEAN% 09UTC) 59 64 65 59 40 31 24 25 25 27 43 72 45 RELATIVE HUMIDITY (MEAN% 15UTC) 72 70 69 59 42 30 22 24 29 38 55 79 49 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 39.7 110.8 133.0 170.1 51.1 2.2 0.4 7.0 0.2 18.9 13.3 52.7 599.4 DAYS WITH PRECIPITATION >=10 2 5 3 6 1 0 0 0 0 0 0 0 17 DAYS WITH PRECIPITATION >= 5 3 6 6 9 2 0 0 1 0 1 1 5 34 DAYS WITH PRECIPITATION >= 1 7 11 11 12 4 1 0 2 0 5 2 13 68 DAYS WITH PRECIPITATION 13 16 17 16 12 2 3 2 1 6 9 15 112 GREATEST DAILY PRECIPITATION 17.0 24.3 43.0 34.0 37.0 2.0 0.4 5.0 0.2 8.2 8.0 8.2 43.0 DAY 29 14 8 22 29 1 22 21 23 30 30 7 DAY WITH THUNDER STORM 0 2 4 5 6 0 0 2 0 3 0 1 23 DAYS WITH SNOW OR SLEET 12 14 15 3 0 0 0 0 0 0 4 15 63 DAYS WITH DUST 0 0 2 1 2 0 0 0 0 1 0 0 6 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 270 270 270 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 7.0 9.2 11.6 10.6 8.6 7.8 7.5 7.9 8.3 8.9 7.3 10.6 8.7 PREVAILING WIND PERCENT 7.7 19.3 16.8 25.3 32.3 29.3 25.2 31.6 33.3 31.6 18.0 16.8 23.9 CALMS PERCENT OF WIND 79.4 72.1 66.5 58.7 47.1 53.3 55.5 56.1 58.0 54.8 72.7 72.3 62.1 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 352 277 254 261 296 257 266 271 263 267 299 287 274 VECTOR WIND MAGNITUDE(KNOTS) 1.3 1.7 2.4 3.1 2.6 2.5 1.3 2.1 2.8 3.2 1.3 1.7 2.0 WIND STEADINESES (MEAN %) 56.5 56.7 63.2 77.5 52.0 69.4 38.2 56.8 82.4 76.2 54.2 56.7 57.1 WIND SPEED (MEAN KNOTS) 2.3 3.0 3.8 4.0 5.0 3.6 3.4 3.7 3.4 4.2 2.4 3.0 3.5 FASTEST WIND DIRECTION 30 30 200 270 60 270 10 10 60 10 360 10 30 FASTEST WIND SPEED (KNOTS) 29 33 31 23 23 23 16 19 14 17 27 33 33 DAY 19 17 26 11 9 1 3 13 2 15 3 11 DAYS WITH SKY CLEAR (0-2)/8 12 6 6 5 11 24 24 27 26 18 14 14 187 DAYS WITH P.CLOUDY (3-6)/8 7 9 12 6 16 5 6 4 4 9 9 8 95 DAYS WITH CLOUDY (7-8)/8 12 13 13 19 4 1 1 0 0 4 7 9 83 DAYS WITH VISIBILITY =< 2 KM 6 12 10 8 2 0 0 0 0 0 3 12 53 DURATION OF SUNSHINE HOURS 148.8 126.3 170.2 147.6 271.3 333.4 331.3 365.2 316.3 251.5 198.6 142.9 2803.4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 755.6 752.4 754.1 757.6 759.5 757.8 757.1 760.5 760.7 761.6 759.5 758.0 757.9 MAX. QFE PRESSURE IN HPA 763.5 757.8 760.0 764.7 763.3 761.0 762.4 763.4 765.5 767.5 767.1 764.1 767.5 DAY-HOUR 12- 6 6-15 6- 9 8- 6 2- 6 9- 6 3- 6 30- 6 23- 6 15- 6 26- 6 30- 6 MIN. QFE PRESSURE IN HPA 743.8 741.4 744.2 752.5 753.8 752.1 752.2 756.6 756.8 756.0 752.8 750.6 741.4 DAY-HOUR 28-12 19- 3 26-12 14-15 8-15 30-15 1- 3 1- 3 7-12 27-12 14-12 6-12 MEAN QNH PRESSURE IN HPA 1019.9 1015.9 1018.0 1022.5 1024.9 1022.8 1022.0 1026.2 1026.5 1027.7 1024.9 1023.1 1022.9 MAX. QNH PRESSURE IN HPA 1030.1 1022.8 1025.6 1031.6 1029.8 1026.9 1028.7 1030.0 1032.6 1035.2 1034.7 1030.8 1035.2 DAY-HOUR 12- 6 6-15 6- 9 8- 6 2- 6 9- 6 3- 6 30- 6 23- 6 15- 6 26- 6 30- 6 MIN. QNH PRESSURE IN HPA 1005.0 1001.9 1005.5 1016.1 1017.7 1015.5 1015.7 1021.3 1021.5 1020.5 1016.4 1013.6 1001.9 DAY-HOUR 28-12 19- 3 26-12 14-15 8-15 30-15 1- 3 1- 3 7-12 27-12 14-12 6-12 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 755.1 752.1 753.7 757.2 759.3 757.8 757.1 760.6 760.7 761.5 759.2 757.6 757.7 MAX. QFE PRESSURE IN HPA 761.8 756.9 759.0 763.9 762.5 760.3 761.7 762.8 764.8 766.1 766.0 762.4 766.1 DAY 12 7 3 8 11 9 4 30 27 15 26 30 MIN. QFE PRESSURE IN HPA 746.7 741.4 746.9 752.7 754.7 753.5 752.2 756.6 757.2 756.6 753.4 752.5 741.4 DAY 29 19 13 14 8 30 1 1 7 27 21 7 MEAN QNH PRESSURE IN HPA 1019.4 1015.5 1017.6 1022.0 1024.7 1022.8 1022.0 1026.4 1026.5 1027.5 1024.5 1022.5 1022.6 MAX. QNH PRESSURE IN HPA 1027.9 1021.7 1024.3 1030.6 1028.8 1026.0 1027.8 1029.2 1031.7 1033.4 1033.3 1028.7 1033.4 DAY 12 7 3 8 11 9 4 30 27 15 26 30 MIN. QNH PRESSURE IN HPA 1008.7 1001.9 1008.9 1016.3 1018.9 1017.3 1015.7 1021.3 1022.0 1021.3 1017.2 1016.1 1001.9 DAY 29 19 13 14 8 30 1 1 7 27 21 7 MEAN QFF PRESSURE IN HPA 1021.8 1017.8 1017.8 1014.0 1012.5 1003.6 997.5 1004.3 1009.5 1014.8 1022.0 1024.1 1013.3 MAX. QFF PRESSURE IN HPA 1028.0 1025.3 1034.8 1022.1 1022.7 1011.4 1006.1 1007.9 1019.6 1019.9 1033.8 1038.1 1038.1 DAY 11 13 2 3 2 1 4 31 27 16 23 12 MIN. QFF PRESSURE IN HPA 1009.8 1007.2 1005.9 1005.9 1006.6 995.1 992.2 997.0 1001.6 1008.7 1012.5 1013.2 992.2 DAY 16 19 13 28 8 30 30 1 7 27 14 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABALI (40755) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 45 N LONGITUDE 51 53 E DATA PROCESSING CENTER ELEVATION 2465.2 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 756.2 753.0 754.7 758.1 759.9 758.3 757.7 761.2 761.4 762.4 760.1 758.8 758.5 MAX. QFE PRESSURE IN HPA 763.5 757.3 759.7 764.7 763.3 761.0 762.4 763.4 765.5 767.5 767.1 764.1 767.5 DAY 12 7 6 8 2 9 3 30 23 15 26 30 MIN. QFE PRESSURE IN HPA 748.4 741.9 747.4 753.0 754.7 753.7 753.0 757.1 758.0 757.6 754.8 751.8 741.9 DAY 29 19 13 14 8 30 1 1 7 27 14 6 MEAN QNH PRESSURE IN HPA 1020.8 1016.7 1018.8 1023.1 1025.5 1023.5 1022.7 1027.1 1027.4 1028.7 1025.8 1024.1 1023.7 MAX. QNH PRESSURE IN HPA 1030.1 1022.2 1025.2 1031.6 1029.8 1026.9 1028.7 1030.0 1032.6 1035.2 1034.7 1030.8 1035.2 DAY 12 7 6 8 2 9 3 30 23 15 26 30 MIN. QNH PRESSURE IN HPA 1010.8 1002.5 1009.5 1016.7 1018.9 1017.6 1016.7 1021.9 1023.1 1022.6 1019.0 1015.2 1002.5 DAY 29 19 13 14 8 30 1 1 7 27 14 6 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 755.7 752.7 754.5 757.9 759.8 758.1 757.5 760.8 761.0 761.8 759.5 758.2 758.1 MAX. QFE PRESSURE IN HPA 763.0 757.1 760.0 764.2 763.3 760.7 762.4 763.1 765.1 766.4 766.4 762.7 766.4 DAY 12 7 6 8 2 9 3 30 27 15 25 30 MIN. QFE PRESSURE IN HPA 746.7 742.4 747.0 752.8 754.5 753.4 753.0 757.7 757.5 757.1 753.6 751.5 742.4 DAY 28 19 13 14 8 30 1 1 7 27 14 6 MEAN QNH PRESSURE IN HPA 1020.1 1016.2 1018.6 1023.0 1025.4 1023.2 1022.4 1026.6 1026.9 1027.9 1025.0 1023.3 1023.2 MAX. QNH PRESSURE IN HPA 1029.4 1021.9 1025.6 1031.0 1029.8 1026.5 1028.7 1029.6 1032.1 1033.8 1033.8 1029.1 1033.8 DAY 12 7 6 8 2 9 3 30 27 15 25 30 MIN. QNH PRESSURE IN HPA 1008.7 1003.2 1009.0 1016.4 1018.6 1017.2 1016.7 1022.7 1022.4 1021.9 1017.5 1014.8 1003.2 DAY 28 19 13 14 8 30 1 1 7 27 14 6 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 755.2 752.0 753.7 757.4 759.1 757.4 756.9 759.9 760.2 761.2 759.1 757.6 757.5 MAX. QFE PRESSURE IN HPA 762.7 757.0 759.3 763.9 762.9 759.8 761.7 762.3 764.5 766.6 766.8 762.3 766.8 DAY 12 6 2 8 2 3 3 11 27 15 25 30 MIN. QFE PRESSURE IN HPA 743.8 742.8 744.2 752.8 754.1 752.5 752.6 757.7 756.8 756.0 752.8 750.6 742.8 DAY 28 19 26 14 8 30 1 1 7 27 14 6 MEAN QNH PRESSURE IN HPA 1019.5 1015.4 1017.5 1022.3 1024.5 1022.3 1021.6 1025.5 1025.9 1027.1 1024.5 1022.6 1022.4 MAX. QNH PRESSURE IN HPA 1029.1 1021.8 1024.7 1030.6 1029.3 1025.4 1027.8 1028.5 1031.4 1034.0 1034.3 1028.5 1034.3 DAY 12 6 2 8 2 3 3 11 27 15 25 30 MIN. QNH PRESSURE IN HPA 1005.0 1003.7 1005.5 1016.4 1018.1 1016.1 1016.2 1022.7 1021.5 1020.5 1016.4 1013.6 1003.7 DAY 28 19 26 14 8 30 1 1 7 27 14 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****