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