STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) ***** 12.9 15.5 20.9 28.2 33.4 36.0 35.7 30.2 24.7 18.6 11.5 ***** MINIMUN AIR TEMPERATURE (C) ***** 6.9 8.6 11.8 17.6 21.1 25.1 25.2 19.3 13.7 7.5 6.5 ***** DAYS WITH MINIMUM TEMP. >=21 **** 0 0 0 3 15 31 31 8 0 0 0 **** DAYS WITH MINIMUM TEMP. <=-4 **** 0 0 0 0 0 0 0 0 0 0 0 **** DAYS WITH FREEZING MIN.<= 0 **** 0 0 0 0 0 0 0 0 0 0 0 **** TEMPERATURE RECORDS LOWEST(C) ***** 1.0 3.8 7.0 11.4 18.2 21.6 21.8 14.8 9.4 0.8 3.0 ***** DAY ** 11 1 2 11 6 1 28 28 30 29 19 MAXIMUM AIR TEMPERATURE (C) 18.2 17.4 20.3 26.3 33.7 38.8 41.9 41.1 36.3 31.0 25.3 15.4 28.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 31 30 31 31 30 18 1 0 173 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 20.6 21.8 25.0 30.4 36.0 41.8 44.8 43.1 40.6 34.0 30.4 20.6 44.8 DAY 31 3 26 30 20 13 19 13 1 9 4 2 DIF. BETWEEN (MAX.-MIN.) (C) ***** 10.5 11.7 14.5 16.1 17.7 16.8 15.9 17.0 17.3 17.8 8.9 ***** MEAN DAILY TEMP. (MDT) (C) ***** 12.2 14.5 19.0 25.6 30.0 33.5 33.2 27.8 22.3 16.4 11.0 ***** COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 2.4 143.5 268.6 386.7 377.7 204.1 52.3 0.4 0.0 ****** HEATING DEG. DAYS(BASE 18 0C) 89.2 163.8 110.1 8.0 0.0 0.0 0.0 0.0 0.0 0.0 65.5 217.8 ****** DEWPOINT (MEAN C) ***** 5.0 6.0 7.6 8.1 9.6 14.0 12.2 10.5 7.4 2.3 6.7 ***** MIXING RATIO (G/KG) ****** 6.37 6.93 7.53 7.86 8.66 12.02 10.55 9.22 7.40 5.35 6.98 ****** VAPOUR PRESSURE (HPA) ****** 9.02 9.81 10.64 11.08 12.12 16.63 14.70 12.96 10.48 7.60 9.91 ****** SATURATION DEF. (HPA) ****** 6.30 8.47 15.21 28.80 41.76 45.18 45.77 32.02 22.35 15.61 3.96 ****** RELATIVE HUMIDITY (MEAN %) *** 63 58 47 31 25 30 27 32 35 37 75 *** RELATIVE HUMIDITY (MAX. %) 74 85 83 76 53 43 49 44 50 56 59 94 64 RELATIVE HUMIDITY (MIN. %) 37 46 41 29 20 17 20 17 22 24 23 57 29 RELATIVE HUMIDITY (MEAN% 03UTC) *** 84 83 76 53 43 48 43 50 55 59 93 *** RELATIVE HUMIDITY (MEAN% 09UTC) 42 52 46 35 23 20 24 22 25 27 26 63 34 RELATIVE HUMIDITY (MEAN% 15UTC) *** 60 55 38 26 20 25 21 28 34 37 77 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 10.5 125.6 107.0 30.0 2.2 0.0 2.1 0.0 4.0 5.0 0.0 192.8 479.2 DAYS WITH PRECIPITATION >=10 0 4 3 1 0 0 0 0 0 0 0 6 14 DAYS WITH PRECIPITATION >= 5 1 5 5 2 0 0 0 0 0 1 0 6 20 DAYS WITH PRECIPITATION >= 1 3 8 6 2 1 0 1 0 1 1 0 7 30 DAYS WITH PRECIPITATION 4 10 7 2 2 0 2 1 1 1 0 8 38 GREATEST DAILY PRECIPITATION 6.0 42.0 42.0 23.0 2.0 0.0 2.1 0.0 4.0 5.0 0.0 57.0 57.0 DAY 1 8 21 24 31 ** 24 ** 18 23 ** 12 DAY WITH THUNDER STORM 0 2 0 3 3 0 3 0 1 1 0 1 14 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 2 0 0 2 6 7 13 10 3 0 2 0 45 WIND DIRECTION (PREVAILING) *** 225 90 225 270 180 135 135 135 135 135 90 *** PREVAILING WIND SPEED(KNOTS) **** 5.8 4.4 7.8 8.6 8.3 7.9 5.8 6.1 5.3 4.3 5.8 **** PREVAILING WIND PERCENT ***** 8.6 9.0 12.7 17.4 12.0 11.6 11.0 12.0 7.1 8.0 5.8 ***** CALMS PERCENT OF WIND ***** 77.1 79.4 62.0 38.1 46.0 49.0 38.1 48.7 64.5 70.0 83.9 ***** NO. OF WIND OBSERVATION 102 140 155 150 155 150 155 155 150 155 150 155 1772 VECTOR WIND DIRECTION (MEAN) *** 213 158 216 260 182 171 75 136 192 151 110 *** VECTOR WIND MAGNITUDE(KNOTS) **** 0.7 0.4 1.2 1.2 1.3 1.4 0.4 1.1 0.7 0.6 0.6 **** WIND STEADINESES (MEAN %) ***** 50.0 40.0 46.2 25.0 36.1 35.0 9.3 35.5 30.4 40.0 66.7 ***** WIND SPEED (MEAN KNOTS) **** 1.4 1.0 2.6 4.8 3.6 4.0 4.3 3.1 2.3 1.5 0.9 **** FASTEST WIND DIRECTION *** 240 210 240 70 170 150 360 210 230 270 150 *** FASTEST WIND SPEED (KNOTS) *** 16 12 23 29 19 19 17 29 19 16 10 *** DAY ** 9 27 15 24 9 3 30 13 14 14 25 DAYS WITH SKY CLEAR (0-2)/8 23 13 14 14 24 29 25 29 28 28 28 7 262 DAYS WITH P.CLOUDY (3-6)/8 4 7 10 11 7 1 4 2 2 3 1 13 65 DAYS WITH CLOUDY (7-8)/8 4 8 7 5 0 0 2 0 0 0 1 11 38 DAYS WITH VISIBILITY =< 2 KM 2 3 0 0 2 0 0 0 0 0 0 8 15 DURATION OF SUNSHINE HOURS 207.7 184.3 235.9 259.8 350.0 369.1 332.1 351.2 317.5 312.1 288.9 154.6 3363.2 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA ****** 891.5 890.9 889.8 888.4 883.2 878.2 882.1 887.5 891.8 892.7 893.7 ****** MAX. QFE PRESSURE IN HPA ****** 896.6 897.3 896.2 893.7 890.0 883.7 887.3 893.0 898.0 897.5 898.0 ****** DAY-HOUR **-** 1- 6 3- 6 4- 6 26- 6 2- 6 4- 6 19- 6 13- 6 25- 6 30- 6 19- 6 MIN. QFE PRESSURE IN HPA ****** 886.0 885.3 883.3 881.4 878.4 872.1 876.0 881.3 886.0 886.0 887.8 ****** DAY-HOUR **-** 27-12 27-15 16-15 15-12 18-15 20-12 3-15 4-15 15-12 6-12 25-12 MEAN QNH PRESSURE IN HPA ****** 1017.8 1017.1 1015.9 1014.4 1008.5 1003.0 1007.3 1013.3 1018.2 1019.2 1020.2 ****** MAX. QNH PRESSURE IN HPA ****** 1023.5 1024.3 1023.1 1020.3 1016.2 1009.1 1013.1 1019.5 1025.1 1024.5 1025.1 ****** DAY-HOUR **-** 1- 6 3- 6 4- 6 26- 6 2- 6 4- 6 19- 6 13- 6 25- 6 30- 6 19- 6 MIN. QNH PRESSURE IN HPA ****** 1011.7 1010.9 1008.7 1006.6 1003.2 996.2 1000.6 1006.5 1011.7 1011.7 1013.7 ****** DAY-HOUR **-** 27-12 27-15 16-15 15-12 18-15 20-12 3-15 4-15 15-12 6-12 25-12 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 ****** 891.8 890.9 890.0 889.1 884.1 879.5 883.3 888.3 892.5 893.2 893.7 ****** MAX. QFE PRESSURE IN HPA ****** 895.4 895.9 895.0 893.2 889.2 883.4 886.7 892.1 896.3 896.2 896.5 ****** DAY ** 1 3 4 27 2 4 19 13 25 30 19 MIN. QFE PRESSURE IN HPA ****** 887.5 885.5 884.9 884.0 880.3 875.3 879.2 884.1 888.2 888.0 889.2 ****** DAY ** 24 14 17 15 13 17 3 1 15 6 25 MEAN QNH PRESSURE IN HPA ****** 1018.1 1017.2 1016.1 1015.1 1009.6 1004.4 1008.7 1014.2 1018.9 1019.8 1020.3 ****** MAX. QNH PRESSURE IN HPA ****** 1022.2 1022.7 1021.7 1019.7 1015.3 1008.8 1012.5 1018.5 1023.2 1023.1 1023.4 ****** DAY ** 1 3 4 27 2 4 19 13 25 30 19 MIN. QNH PRESSURE IN HPA ****** 1013.4 1011.1 1010.5 1009.5 1005.3 999.8 1004.1 1009.6 1014.1 1013.9 1015.3 ****** DAY ** 24 14 17 15 13 17 3 1 15 6 25 MEAN QFF PRESSURE IN HPA ****** 1016.4 1014.5 1011.1 1007.3 999.6 993.0 997.4 1005.7 1013.1 1016.9 1019.3 ****** MAX. QFF PRESSURE IN HPA ****** 1019.7 1021.2 1017.7 1012.1 1006.6 998.3 1001.8 1009.8 1019.1 1022.6 1023.7 ****** DAY ** 1 3 4 27 1 4 19 13 25 30 19 MIN. QFF PRESSURE IN HPA ****** 1012.0 1008.3 1005.9 1001.8 994.1 987.8 991.8 998.9 1007.5 1009.4 1013.6 ****** DAY ** 24 14 17 15 19 21 4 1 15 6 25 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 896.2 893.0 892.4 891.3 889.9 884.7 879.8 884.0 889.3 893.7 894.6 895.2 890.3 MAX. QFE PRESSURE IN HPA 899.8 896.6 897.3 896.2 893.7 890.0 883.7 887.3 893.0 898.0 897.5 898.0 899.8 DAY 16 1 3 4 26 2 4 19 13 25 30 19 MIN. QFE PRESSURE IN HPA 893.0 888.9 887.0 886.2 885.1 881.8 875.9 879.5 884.8 889.4 889.7 890.9 875.9 DAY 9 24 14 17 15 18 17 3 1 15 6 25 MEAN QNH PRESSURE IN HPA 1023.0 1019.4 1018.8 1017.6 1016.0 1010.3 1004.8 1009.5 1015.4 1020.3 1021.3 1021.9 1016.5 MAX. QNH PRESSURE IN HPA 1027.1 1023.5 1024.3 1023.1 1020.3 1016.2 1009.1 1013.1 1019.5 1025.1 1024.5 1025.1 1027.1 DAY 16 1 3 4 26 2 4 19 13 25 30 19 MIN. QNH PRESSURE IN HPA 1019.5 1014.9 1012.8 1011.9 1010.7 1007.0 1000.4 1004.5 1010.4 1015.5 1015.8 1017.2 1000.4 DAY 9 24 14 17 15 18 17 3 1 15 6 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 895.1 892.0 891.6 890.4 888.8 883.6 878.5 882.5 887.9 892.1 892.8 893.8 889.1 MAX. QFE PRESSURE IN HPA 898.8 895.3 896.0 895.0 893.0 889.0 882.7 886.0 891.1 895.8 896.8 896.8 898.8 DAY 18 1 3 3 26 1 4 11 13 24 30 19 MIN. QFE PRESSURE IN HPA 892.0 888.4 887.0 885.8 883.6 880.0 874.8 878.2 883.2 887.7 887.8 889.2 874.8 DAY 9 27 14 16 15 18 17 8 1 15 26 25 MEAN QNH PRESSURE IN HPA 1021.9 1018.4 1017.9 1016.6 1014.8 1009.0 1003.4 1007.8 1013.8 1018.5 1019.2 1020.4 1015.1 MAX. QNH PRESSURE IN HPA 1026.0 1022.0 1022.8 1021.7 1019.5 1015.0 1008.0 1011.7 1017.4 1022.6 1023.7 1023.7 1026.0 DAY 18 1 3 3 26 1 4 11 13 24 30 19 MIN. QNH PRESSURE IN HPA 1018.4 1014.4 1012.8 1011.5 1009.0 1005.0 999.2 1003.0 1008.6 1013.6 1013.7 1015.3 999.2 DAY 9 27 14 16 15 18 17 8 1 15 26 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** 890.1 889.7 888.6 887.2 881.9 876.7 880.5 885.9 890.3 891.2 892.5 ****** MAX. QFE PRESSURE IN HPA ****** 893.2 893.5 893.0 890.7 887.3 880.4 884.3 888.8 894.1 895.5 895.4 ****** DAY ** 1 3 3 27 1 4 11 12 24 30 19 MIN. QFE PRESSURE IN HPA ****** 886.0 885.5 884.0 881.4 878.8 872.1 876.1 881.7 886.0 886.0 887.8 ****** DAY ** 27 14 16 15 18 20 8 4 15 6 25 MEAN QNH PRESSURE IN HPA ****** 1016.3 1015.8 1014.6 1013.0 1007.2 1001.3 1005.5 1011.6 1016.5 1017.5 1018.9 ****** MAX. QNH PRESSURE IN HPA ****** 1019.7 1020.0 1019.5 1016.9 1013.1 1005.5 1009.8 1014.8 1020.7 1022.3 1022.2 ****** DAY ** 1 3 3 27 1 4 11 12 24 30 19 MIN. QNH PRESSURE IN HPA ****** 1011.7 1011.1 1009.5 1006.6 1003.7 996.2 1000.7 1006.9 1011.7 1011.7 1013.7 ****** DAY ** 27 14 16 15 18 20 8 4 15 6 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** 890.6 889.8 888.6 887.1 881.6 876.7 880.3 886.0 890.6 891.8 893.2 ****** MAX. QFE PRESSURE IN HPA ****** 893.8 893.5 893.6 891.0 887.5 880.4 884.7 890.4 894.6 896.0 896.4 ****** DAY ** 6 2 12 26 2 3 11 13 24 30 19 MIN. QFE PRESSURE IN HPA ****** 886.0 885.3 883.3 881.8 878.4 872.1 876.0 881.3 886.3 886.8 888.9 ****** DAY ** 27 27 16 15 18 20 3 4 15 6 25 MEAN QNH PRESSURE IN HPA ****** 1016.9 1015.9 1014.5 1013.0 1006.8 1001.3 1005.3 1011.7 1016.8 1018.1 1019.7 ****** MAX. QNH PRESSURE IN HPA ****** 1020.4 1020.0 1020.2 1017.3 1013.4 1005.5 1010.2 1016.6 1021.3 1022.8 1023.3 ****** DAY ** 6 2 12 26 2 3 11 13 24 30 19 MIN. QNH PRESSURE IN HPA ****** 1011.7 1010.9 1008.7 1007.0 1003.2 996.2 1000.6 1006.5 1012.0 1012.6 1014.9 ****** DAY ** 27 27 16 15 18 20 3 4 15 6 25 MEAN QFF PRESSURE IN HPA ****** 1015.1 1013.1 1009.5 1005.1 996.7 989.8 994.0 1003.1 1010.9 1015.2 1018.6 ****** MAX. QFF PRESSURE IN HPA ****** 1018.6 1018.7 1014.8 1010.6 1004.7 994.5 999.4 1007.9 1016.9 1022.2 1023.3 ****** DAY ** 2 2 3 1 2 3 11 13 24 30 19 MIN. QFF PRESSURE IN HPA ****** 1009.5 1006.9 1003.7 999.2 992.4 983.7 988.4 996.0 1005.6 1007.5 1013.0 ****** DAY ** 27 26 16 15 19 20 8 4 14 5 25 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 10.1 13.1 15.5 22.3 29.4 33.9 35.5 34.0 31.3 24.3 17.5 13.6 23.4 MINIMUN AIR TEMPERATURE (C) 4.5 7.2 10.0 12.5 18.3 22.1 26.6 24.7 20.0 13.0 7.0 3.1 14.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 4 25 30 28 9 2 0 0 98 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 2 0 0 0 0 0 0 0 0 0 0 2 4 TEMPERATURE RECORDS LOWEST(C) -1.6 2.0 5.8 8.0 13.8 19.2 20.8 18.0 15.8 6.6 4.0 -0.4 -1.6 DAY 15 25 28 6 1 8 17 27 22 22 29 10 MAXIMUM AIR TEMPERATURE (C) 14.7 17.7 19.7 27.8 34.6 39.3 40.0 39.5 37.8 30.9 24.0 20.6 28.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 9 30 30 31 31 30 23 0 0 184 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 20.0 23.2 24.4 32.0 40.0 41.8 43.0 41.7 41.2 36.6 29.2 23.0 43.0 DAY 31 9 30 24 31 4 11 11 11 1 1 20 DIF. BETWEEN (MAX.-MIN.) (C) 10.2 10.5 9.7 15.3 16.3 17.2 13.4 14.8 17.8 17.9 17.0 17.5 14.8 MEAN DAILY TEMP. (MDT) (C) 9.6 12.5 14.8 20.2 26.4 30.7 33.3 32.1 28.9 22.0 15.5 11.8 21.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 18.0 168.7 291.0 381.7 343.8 237.0 48.9 0.0 0.0 1489.3 HEATING DEG. DAYS(BASE 18 0C) 260.0 160.8 98.5 5.5 0.0 0.0 0.0 0.0 0.0 0.0 76.9 191.3 792.9 DEWPOINT (MEAN C) 3.8 6.5 8.9 9.0 10.5 10.4 11.7 14.1 10.1 4.4 1.3 -0.0 7.6 MIXING RATIO (G/KG) 5.86 7.04 8.29 8.37 9.17 9.31 10.35 12.19 9.21 6.20 4.87 4.39 7.94 VAPOUR PRESSURE (HPA) 8.32 9.95 11.66 11.77 12.88 12.98 14.40 16.91 12.88 8.76 6.91 6.24 11.14 SATURATION DEF. (HPA) 4.47 5.61 6.41 16.47 29.92 41.87 44.95 38.19 35.06 23.50 14.48 10.32 22.60 RELATIVE HUMIDITY (MEAN %) 68 68 68 47 33 27 26 35 30 31 38 42 43 RELATIVE HUMIDITY (MAX. %) 89 88 92 76 55 46 40 53 49 53 62 67 64 RELATIVE HUMIDITY (MIN. %) 50 53 51 30 22 17 18 22 19 17 23 27 29 RELATIVE HUMIDITY (MEAN% 03UTC) 88 86 91 76 54 46 39 51 48 53 61 67 63 RELATIVE HUMIDITY (MEAN% 09UTC) 58 57 58 34 24 19 21 27 23 22 27 31 33 RELATIVE HUMIDITY (MEAN% 15UTC) 67 65 64 45 31 23 24 31 27 28 36 40 40 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 149.4 78.0 128.9 24.0 0.0 1.0 0.4 20.4 0.1 0.2 4.0 0.8 407.2 DAYS WITH PRECIPITATION >=10 4 2 5 1 0 0 0 1 0 0 0 0 13 DAYS WITH PRECIPITATION >= 5 7 5 7 2 0 0 0 1 0 0 0 0 22 DAYS WITH PRECIPITATION >= 1 10 12 12 4 0 1 0 2 0 0 1 0 42 DAYS WITH PRECIPITATION 10 13 14 5 2 1 2 4 1 2 1 1 56 GREATEST DAILY PRECIPITATION 66.0 27.0 43.4 12.8 0.0 1.0 0.2 16.2 0.1 0.2 4.0 0.8 66.0 DAY 12 5 13 16 ** 14 16 19 6 10 28 15 DAY WITH THUNDER STORM 0 1 4 2 2 1 0 3 1 2 0 0 16 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 1 3 1 9 4 13 6 8 2 1 1 49 WIND DIRECTION (PREVAILING) 135 135 180 225 135 180 45 90 135 135 135 135 135 PREVAILING WIND SPEED(KNOTS) 5.7 5.7 5.6 7.0 5.4 6.8 10.8 5.9 5.4 5.9 5.5 5.8 6.1 PREVAILING WIND PERCENT 9.7 10.3 12.3 13.3 11.6 12.7 21.3 9.0 16.0 13.5 8.7 5.8 10.0 CALMS PERCENT OF WIND 71.0 60.7 56.1 49.3 40.6 44.7 21.3 36.1 38.7 50.3 69.3 79.4 51.4 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 169 142 162 213 217 188 49 3 168 151 110 162 155 VECTOR WIND MAGNITUDE(KNOTS) 0.6 0.6 1.4 1.0 1.5 1.5 2.9 0.3 1.1 0.9 0.7 0.6 0.6 WIND STEADINESES (MEAN %) 35.3 24.0 56.0 30.3 34.1 36.6 42.0 6.3 31.4 24.3 36.8 46.2 17.6 WIND SPEED (MEAN KNOTS) 1.7 2.5 2.5 3.3 4.4 4.1 6.9 4.8 3.5 3.7 1.9 1.3 3.4 FASTEST WIND DIRECTION 250 10 210 210 270 210 90 150 270 270 270 210 90 FASTEST WIND SPEED (KNOTS) 19 23 16 19 39 23 49 49 16 29 14 29 49 DAY 13 13 28 22 4 8 9 18 19 10 19 15 DAYS WITH SKY CLEAR (0-2)/8 15 9 8 14 20 26 27 25 30 31 19 24 248 DAYS WITH P.CLOUDY (3-6)/8 8 12 12 11 9 4 3 6 0 0 7 6 78 DAYS WITH CLOUDY (7-8)/8 8 8 11 5 2 0 1 0 0 0 4 1 40 DAYS WITH VISIBILITY =< 2 KM 4 1 6 0 0 0 2 2 3 0 1 0 19 DURATION OF SUNSHINE HOURS 219.2 195.6 195.9 286.4 323.5 346.9 345.4 331.5 323.5 328.0 258.2 285.3 3439.4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 891.9 889.5 887.1 887.7 886.2 881.4 880.6 881.7 883.8 888.9 889.6 889.2 886.5 MAX. QFE PRESSURE IN HPA 897.7 894.8 891.5 893.7 891.1 887.6 886.9 886.8 891.6 893.9 897.0 894.8 897.7 DAY-HOUR 2- 6 8- 6 2- 6 8- 6 4- 6 1- 6 3- 6 27- 6 25- 6 13- 6 15- 6 8- 6 MIN. QFE PRESSURE IN HPA 883.0 882.6 881.4 882.2 880.2 875.2 875.9 876.5 878.6 883.0 884.0 883.9 875.2 DAY-HOUR 12-12 22-12 17-12 28-12 29-15 19-15 12-12 14-15 19-12 4-12 29-12 15-12 MEAN QNH PRESSURE IN HPA 1018.3 1015.6 1012.9 1013.6 1012.0 1006.6 1005.7 1006.9 1009.2 1014.9 1015.6 1015.3 1012.2 MAX. QNH PRESSURE IN HPA 1024.7 1021.5 1017.8 1020.3 1017.4 1013.5 1012.7 1012.6 1017.9 1020.5 1023.9 1021.5 1024.7 DAY-HOUR 2- 6 8- 6 2- 6 8- 6 4- 6 1- 6 3- 6 27- 6 25- 6 13- 6 15- 6 8- 6 MIN. QNH PRESSURE IN HPA 1008.4 1007.9 1006.6 1007.5 1005.2 999.7 1000.4 1001.1 1003.5 1008.4 1009.5 1009.4 999.7 DAY-HOUR 12-12 22-12 17-12 28-12 29-15 19-15 12-12 14-15 19-12 4-12 29-12 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 891.9 889.5 887.2 888.1 887.0 882.5 881.5 882.7 884.6 889.6 889.9 889.6 887.0 MAX. QFE PRESSURE IN HPA 896.3 893.2 890.2 892.8 890.1 887.1 886.5 886.0 889.7 892.8 896.0 893.3 896.3 DAY 2 8 2 8 17 1 3 31 25 14 16 8 MIN. QFE PRESSURE IN HPA 884.5 884.2 883.0 885.0 883.1 878.2 877.9 878.2 880.9 885.1 885.0 887.0 877.9 DAY 12 5 17 5 30 20 12 14 20 6 29 25 MEAN QNH PRESSURE IN HPA 1018.3 1015.6 1013.0 1014.1 1012.8 1007.8 1006.7 1008.0 1010.1 1015.7 1016.0 1015.7 1012.8 MAX. QNH PRESSURE IN HPA 1023.2 1019.7 1016.4 1019.3 1016.3 1012.9 1012.3 1011.7 1015.8 1019.3 1022.8 1019.8 1023.2 DAY 2 8 2 8 17 1 3 31 25 14 16 8 MIN. QNH PRESSURE IN HPA 1010.0 1009.7 1008.4 1010.6 1008.5 1003.0 1002.7 1003.0 1006.0 1010.7 1010.6 1012.8 1002.7 DAY 12 5 17 5 30 20 12 14 20 6 29 25 MEAN QFF PRESSURE IN HPA 1018.0 1013.8 1010.0 1008.8 1004.5 997.5 995.2 997.2 1001.1 1010.0 1013.4 1014.8 1007.0 MAX. QFF PRESSURE IN HPA 1023.4 1018.2 1014.5 1015.0 1008.5 1002.8 1001.4 1003.4 1007.6 1014.5 1021.4 1019.1 1023.4 DAY 2 8 2 8 8 1 3 27 25 24 16 8 MIN. QFF PRESSURE IN HPA 1010.1 1007.8 1006.2 1005.1 998.4 992.2 990.7 990.6 996.9 1003.8 1008.5 1010.4 990.6 DAY 12 5 17 28 30 20 12 14 19 5 28 15 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 893.5 891.0 888.4 889.2 887.8 883.0 882.1 883.4 885.7 890.8 891.2 891.2 888.1 MAX. QFE PRESSURE IN HPA 897.7 894.8 891.5 893.7 891.1 887.6 886.9 886.8 891.6 893.9 897.0 894.8 897.7 DAY 2 8 2 8 4 1 3 27 25 13 15 8 MIN. QFE PRESSURE IN HPA 885.1 885.2 884.4 886.0 883.9 879.0 878.7 879.0 882.0 886.1 886.8 888.2 878.7 DAY 12 5 17 28 29 20 12 14 20 5 29 25 MEAN QNH PRESSURE IN HPA 1020.1 1017.3 1014.4 1015.3 1013.7 1008.4 1007.4 1008.9 1011.3 1017.0 1017.5 1017.5 1014.1 MAX. QNH PRESSURE IN HPA 1024.7 1021.5 1017.8 1020.3 1017.4 1013.5 1012.7 1012.6 1017.9 1020.5 1023.9 1021.5 1024.7 DAY 2 8 2 8 4 1 3 27 25 13 15 8 MIN. QNH PRESSURE IN HPA 1010.7 1010.8 1009.9 1011.7 1009.4 1003.9 1003.6 1003.9 1007.2 1011.8 1012.6 1014.1 1003.6 DAY 12 5 17 28 29 20 12 14 20 5 29 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 892.3 890.0 887.5 888.3 886.8 881.8 881.1 882.0 884.2 888.9 889.6 889.3 886.8 MAX. QFE PRESSURE IN HPA 896.5 893.6 890.5 892.5 890.4 886.4 886.3 885.2 890.0 892.1 895.5 893.5 896.5 DAY 2 19 1 8 4 1 3 27 25 13 15 8 MIN. QFE PRESSURE IN HPA 884.1 884.1 882.9 884.9 882.5 878.1 877.5 878.2 880.6 884.8 885.2 885.9 877.5 DAY 12 22 17 28 29 20 12 14 19 4 29 15 MEAN QNH PRESSURE IN HPA 1018.7 1016.1 1013.4 1014.3 1012.5 1007.0 1006.2 1007.2 1009.7 1015.0 1015.7 1015.3 1012.6 MAX. QNH PRESSURE IN HPA 1023.4 1020.2 1016.7 1018.9 1016.6 1012.1 1012.0 1010.8 1016.2 1018.5 1022.3 1020.0 1023.4 DAY 2 19 1 8 4 1 3 27 25 13 15 8 MIN. QNH PRESSURE IN HPA 1009.6 1009.6 1008.2 1010.5 1007.8 1002.9 1002.2 1003.0 1005.7 1010.4 1010.8 1011.6 1002.2 DAY 12 22 17 28 29 20 12 14 19 4 29 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 890.6 888.3 885.9 886.5 884.9 880.0 879.3 880.2 882.2 887.3 888.2 887.8 885.1 MAX. QFE PRESSURE IN HPA 894.8 892.0 889.0 890.6 888.7 884.8 884.8 883.6 888.0 890.2 894.2 892.0 894.8 DAY 1 19 1 7 7 1 3 31 25 13 15 8 MIN. QFE PRESSURE IN HPA 883.0 882.6 881.4 882.2 880.5 876.2 875.9 876.6 878.6 883.0 884.0 883.9 875.9 DAY 12 22 17 28 29 19 12 14 19 4 29 15 MEAN QNH PRESSURE IN HPA 1016.9 1014.3 1011.6 1012.3 1010.5 1005.0 1004.2 1005.2 1007.5 1013.2 1014.2 1013.7 1010.7 MAX. QNH PRESSURE IN HPA 1021.5 1018.4 1015.0 1016.8 1014.7 1010.4 1010.4 1009.0 1013.9 1016.4 1020.8 1018.4 1021.5 DAY 1 19 1 7 7 1 3 31 25 13 15 8 MIN. QNH PRESSURE IN HPA 1008.4 1007.9 1006.6 1007.5 1005.6 1000.8 1000.4 1001.2 1003.5 1008.4 1009.5 1009.4 1000.4 DAY 12 22 17 28 29 19 12 14 19 4 29 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 891.2 888.7 886.3 886.4 884.7 879.7 879.0 880.1 882.3 887.8 888.6 888.4 885.3 MAX. QFE PRESSURE IN HPA 895.0 892.6 889.5 890.5 888.7 884.1 884.0 885.5 888.5 890.6 895.0 892.1 895.0 DAY 1 18 1 7 7 1 3 26 25 13 15 7 MIN. QFE PRESSURE IN HPA 884.0 883.5 882.0 882.9 880.2 875.2 875.9 876.5 879.1 883.4 884.9 884.6 875.2 DAY 12 22 14 4 29 19 12 14 18 4 29 15 MEAN QNH PRESSURE IN HPA 1017.5 1014.7 1012.0 1012.2 1010.3 1004.7 1003.9 1005.2 1007.6 1013.7 1014.6 1014.3 1010.9 MAX. QNH PRESSURE IN HPA 1021.7 1019.0 1015.6 1016.7 1014.7 1009.6 1009.5 1011.1 1014.5 1016.8 1021.7 1018.5 1021.7 DAY 1 18 1 7 7 1 3 26 25 13 15 7 MIN. QNH PRESSURE IN HPA 1009.5 1008.9 1007.2 1008.2 1005.2 999.7 1000.4 1001.1 1004.0 1008.8 1010.5 1010.1 999.7 DAY 12 22 14 4 29 19 12 14 18 4 29 15 MEAN QFF PRESSURE IN HPA 1017.1 1012.8 1008.9 1006.7 1001.7 994.3 992.4 994.3 998.5 1008.0 1011.9 1013.3 1005.0 MAX. QFF PRESSURE IN HPA 1022.4 1017.2 1013.3 1012.5 1007.1 999.2 998.6 1002.5 1006.2 1013.0 1019.9 1018.1 1022.4 DAY 28 18 1 7 7 1 3 26 25 23 15 7 MIN. QFF PRESSURE IN HPA 1009.1 1007.1 1004.6 1003.1 995.1 989.2 988.1 988.5 994.8 1001.6 1008.2 1007.9 988.1 DAY 12 22 14 28 29 19 11 14 18 5 10 15 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 10.9 13.3 14.3 20.0 28.1 33.4 36.4 35.5 31.1 25.0 16.4 12.0 23.0 MINIMUN AIR TEMPERATURE (C) 3.2 5.1 7.4 11.0 16.6 21.5 26.2 25.4 19.1 14.6 8.9 5.1 13.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 2 14 31 30 6 0 0 0 83 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 1 0 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS LOWEST(C) 0.0 0.8 1.8 4.8 12.0 15.4 22.2 17.8 16.8 7.4 3.0 2.6 0.0 DAY 5 2 1 12 3 22 3 30 22 28 30 28 MAXIMUM AIR TEMPERATURE (C) 16.3 18.8 19.0 25.6 33.3 38.8 42.2 41.3 37.8 30.9 21.3 17.0 28.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 26 30 31 31 30 21 0 0 170 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 21.0 25.4 22.2 30.2 38.0 42.8 44.5 44.4 40.5 37.0 27.1 21.2 44.5 DAY 12 22 31 28 27 15 10 2 5 1 5 8 DIF. BETWEEN (MAX.-MIN.) (C) 13.1 13.7 11.6 14.6 16.7 17.3 16.0 15.9 18.7 16.3 12.4 11.9 14.8 MEAN DAILY TEMP. (MDT) (C) 9.7 12.0 13.2 18.3 24.9 30.2 34.2 33.4 28.5 22.7 15.1 11.1 21.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 2.3 122.2 274.6 409.8 383.1 223.5 76.8 0.0 0.0 1492.5 HEATING DEG. DAYS(BASE 18 0C) 256.2 170.3 149.3 17.9 0.0 0.0 0.0 0.0 0.0 0.8 90.6 214.6 899.7 DEWPOINT (MEAN C) 1.6 1.8 4.8 8.1 7.2 8.5 14.2 12.5 7.7 8.2 7.0 5.0 7.2 MIXING RATIO (G/KG) 4.96 5.05 6.41 7.98 7.35 8.26 12.19 11.15 7.67 7.90 7.30 6.32 7.71 VAPOUR PRESSURE (HPA) 7.00 7.12 9.00 11.15 10.27 11.44 16.67 15.32 10.68 11.06 10.24 8.88 10.74 SATURATION DEF. (HPA) 6.64 9.03 7.79 13.12 29.65 42.30 46.18 44.64 36.85 22.45 9.12 5.62 22.78 RELATIVE HUMIDITY (MEAN %) 57 50 58 50 29 24 29 28 25 38 57 66 43 RELATIVE HUMIDITY (MAX. %) 78 80 84 78 52 43 48 44 40 57 81 91 65 RELATIVE HUMIDITY (MIN. %) 40 31 40 32 18 15 18 18 15 25 40 47 28 RELATIVE HUMIDITY (MEAN% 03UTC) 76 79 83 77 52 43 48 44 40 56 81 90 64 RELATIVE HUMIDITY (MEAN% 09UTC) 46 37 48 39 21 17 24 24 20 31 46 53 34 RELATIVE HUMIDITY (MEAN% 15UTC) 55 45 53 49 27 21 24 24 23 36 55 65 40 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 103.0 12.6 103.4 43.1 0.0 8.3 6.3 0.6 0.0 8.4 14.3 35.2 335.2 DAYS WITH PRECIPITATION >=10 4 0 2 2 0 0 0 0 0 0 0 1 9 DAYS WITH PRECIPITATION >= 5 4 1 6 2 0 1 0 0 0 0 2 2 18 DAYS WITH PRECIPITATION >= 1 5 2 10 5 0 1 2 0 0 2 4 5 36 DAYS WITH PRECIPITATION 8 6 14 11 0 2 4 1 0 6 7 7 66 GREATEST DAILY PRECIPITATION 46.0 8.1 45.0 22.0 0.0 8.0 4.0 0.6 0.0 4.0 6.0 19.0 46.0 DAY 17 11 25 24 ** 25 25 17 ** 23 27 21 DAY WITH THUNDER STORM 0 0 2 5 0 2 6 0 0 0 0 0 15 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 1 6 4 5 3 2 10 2 1 0 0 0 34 WIND DIRECTION (PREVAILING) 135 180 225 90 225 270 135 90 225 270 180 180 180 PREVAILING WIND SPEED(KNOTS) 4.5 7.0 11.0 5.5 7.7 8.3 10.1 5.7 6.8 7.3 4.0 8.4 7.7 PREVAILING WIND PERCENT 10.3 15.0 12.3 10.0 9.0 16.7 11.0 8.4 8.7 6.5 4.0 3.2 7.6 CALMS PERCENT OF WIND 69.7 63.6 49.7 50.0 61.3 48.0 55.5 61.9 66.0 80.6 87.3 87.7 65.2 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 155 206 187 210 238 234 132 159 202 215 241 174 196 VECTOR WIND MAGNITUDE(KNOTS) 0.7 1.7 2.1 1.5 1.0 1.6 2.1 0.5 1.1 0.8 0.4 0.2 1.0 WIND STEADINESES (MEAN %) 41.2 54.8 47.7 34.1 35.7 40.0 51.2 21.7 45.8 57.1 50.0 20.0 37.0 WIND SPEED (MEAN KNOTS) 1.7 3.1 4.4 4.4 2.8 4.0 4.1 2.3 2.4 1.4 0.8 1.0 2.7 FASTEST WIND DIRECTION 240 240 180 250 200 60 90 60 200 250 240 350 250 FASTEST WIND SPEED (KNOTS) 23 31 35 39 19 29 35 16 17 19 23 16 39 DAY 2 27 24 5 17 21 24 25 14 31 11 28 DAYS WITH SKY CLEAR (0-2)/8 19 19 9 13 21 20 15 28 30 20 8 14 216 DAYS WITH P.CLOUDY (3-6)/8 7 6 11 12 9 10 16 3 0 10 16 13 113 DAYS WITH CLOUDY (7-8)/8 5 3 11 5 1 0 0 0 0 1 6 4 36 DAYS WITH VISIBILITY =< 2 KM 1 0 2 0 0 0 0 0 0 0 2 3 8 DURATION OF SUNSHINE HOURS 247.2 249.9 228.3 268.5 348.9 320.8 312.0 330.6 329.4 274.4 190.1 209.0 3309.1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 886.3 885.2 882.4 881.7 879.5 873.6 868.6 871.8 877.5 881.9 882.8 883.0 879.5 MAX. QFE PRESSURE IN HPA 892.2 889.2 891.2 886.3 885.1 880.0 872.5 877.0 884.0 886.0 888.0 889.0 892.2 DAY-HOUR 8- 6 17- 6 11- 6 14- 6 12- 6 4- 6 4- 6 31- 6 19- 6 13- 6 4- 6 29- 6 MIN. QFE PRESSURE IN HPA 875.0 881.2 874.5 878.1 874.2 865.2 862.9 865.9 872.4 878.0 877.8 877.6 862.9 DAY-HOUR 17-12 9-12 25-15 3-12 30-15 29-15 11-15 1-15 2-15 1-12 23-12 11-12 MEAN QNH PRESSURE IN HPA 1012.0 1010.8 1007.7 1006.9 1004.4 997.9 992.3 995.8 1002.2 1007.1 1008.1 1008.3 1004.5 MAX. QNH PRESSURE IN HPA 1018.6 1015.3 1017.5 1012.0 1010.7 1005.0 996.7 1001.7 1009.5 1011.7 1013.9 1015.0 1018.6 DAY-HOUR 8- 6 17- 6 11- 6 14- 6 12- 6 4- 6 4- 6 31- 6 19- 6 13- 6 4- 6 29- 6 MIN. QNH PRESSURE IN HPA 999.4 1006.4 998.9 1002.9 998.6 988.5 986.0 989.3 996.5 1002.8 1002.6 1002.3 986.0 DAY-HOUR 17-12 9-12 25-15 3-12 30-15 29-15 11-15 1-15 2-15 1-12 23-12 11-12 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 886.6 885.2 882.7 882.2 880.3 874.5 869.6 872.8 878.1 882.5 882.9 883.1 880.0 MAX. QFE PRESSURE IN HPA 891.0 887.5 890.1 885.2 884.0 879.3 871.5 876.0 883.0 885.0 886.9 887.8 891.0 DAY 8 17 12 14 12 5 25 31 19 10 5 29 MIN. QFE PRESSURE IN HPA 879.1 882.4 877.6 880.2 876.8 867.7 865.9 868.4 875.0 879.6 878.6 879.0 865.9 DAY 26 10 25 3 31 29 11 1 6 1 24 11 MEAN QNH PRESSURE IN HPA 1012.3 1010.9 1008.0 1007.4 1005.3 998.9 993.4 997.0 1002.9 1007.7 1008.3 1008.4 1005.0 MAX. QNH PRESSURE IN HPA 1017.3 1013.4 1016.3 1010.8 1009.5 1004.2 995.5 1000.6 1008.4 1010.6 1012.7 1013.7 1017.3 DAY 8 17 12 14 12 5 25 31 19 10 5 29 MIN. QNH PRESSURE IN HPA 1004.0 1007.7 1002.3 1005.2 1001.4 991.3 989.3 992.1 999.4 1004.6 1003.5 1003.9 989.3 DAY 26 10 25 3 31 29 11 1 6 1 24 11 MEAN QFF PRESSURE IN HPA 1011.9 1009.3 1005.6 1002.8 997.4 988.6 981.5 985.5 994.1 1001.1 1005.2 1007.2 999.2 MAX. QFF PRESSURE IN HPA 1016.7 1013.2 1014.2 1007.6 1002.6 995.4 984.5 990.7 1000.0 1005.1 1008.6 1012.8 1016.7 DAY 8 12 1 14 12 5 25 31 19 28 4 30 MIN. QFF PRESSURE IN HPA 1003.8 1004.6 999.4 999.9 991.5 978.8 976.9 979.3 989.8 996.8 1000.6 1001.8 976.9 DAY 17 23 25 28 31 29 11 1 6 1 24 11 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 888.1 886.9 884.1 883.4 881.2 875.1 870.2 873.5 879.3 883.9 884.4 884.6 881.2 MAX. QFE PRESSURE IN HPA 892.2 889.2 891.2 886.3 885.1 880.0 872.5 877.0 884.0 886.0 888.0 889.0 892.2 DAY 8 17 11 14 12 4 4 31 19 13 4 29 MIN. QFE PRESSURE IN HPA 880.2 884.0 878.2 881.1 877.7 868.2 866.1 869.5 876.5 881.0 880.0 880.3 866.1 DAY 17 27 25 26 31 30 11 4 5 1 24 11 MEAN QNH PRESSURE IN HPA 1014.0 1012.7 1009.6 1008.8 1006.3 999.6 994.1 997.8 1004.2 1009.3 1009.9 1010.1 1006.4 MAX. QNH PRESSURE IN HPA 1018.6 1015.3 1017.5 1012.0 1010.7 1005.0 996.7 1001.7 1009.5 1011.7 1013.9 1015.0 1018.6 DAY 8 17 11 14 12 4 4 31 19 13 4 29 MIN. QNH PRESSURE IN HPA 1005.2 1009.5 1003.0 1006.2 1002.5 991.9 989.5 993.3 1001.1 1006.1 1005.0 1005.3 989.5 DAY 17 27 25 26 31 30 11 4 5 1 24 11 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 886.5 885.8 882.9 882.2 880.0 874.1 869.1 872.3 878.1 882.3 883.0 883.1 879.9 MAX. QFE PRESSURE IN HPA 890.5 888.2 890.3 884.9 884.0 879.3 871.8 875.9 882.6 885.0 887.2 887.3 890.5 DAY 8 21 11 14 12 4 4 31 18 9 4 29 MIN. QFE PRESSURE IN HPA 876.7 883.0 877.6 880.0 876.6 867.6 865.0 868.4 874.9 879.4 879.0 878.9 865.0 DAY 17 9 25 26 30 29 11 1 2 1 24 11 MEAN QNH PRESSURE IN HPA 1012.2 1011.5 1008.2 1007.5 1005.1 998.4 992.9 996.4 1002.9 1007.6 1008.3 1008.5 1005.0 MAX. QNH PRESSURE IN HPA 1016.7 1014.1 1016.5 1010.5 1009.5 1004.2 995.9 1000.4 1007.9 1010.6 1013.0 1013.1 1016.7 DAY 8 21 11 14 12 4 4 31 18 9 4 29 MIN. QNH PRESSURE IN HPA 1001.3 1008.4 1002.3 1005.0 1001.2 991.2 988.3 992.1 999.3 1004.3 1003.9 1003.8 988.3 DAY 17 9 25 26 30 29 11 1 2 1 24 11 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 884.9 884.0 881.1 880.2 878.2 872.5 867.2 870.2 876.1 880.3 881.6 881.7 878.1 MAX. QFE PRESSURE IN HPA 889.1 886.1 889.1 883.0 882.1 877.0 870.0 873.5 880.6 883.0 886.3 886.7 889.1 DAY 8 11 11 18 12 4 4 31 18 8 4 29 MIN. QFE PRESSURE IN HPA 875.0 881.2 875.2 878.1 874.5 865.8 863.3 866.4 872.8 878.0 877.8 877.6 863.3 DAY 17 9 25 3 30 29 11 1 2 1 23 11 MEAN QNH PRESSURE IN HPA 1010.4 1009.4 1006.2 1005.2 1003.0 996.6 990.7 994.1 1000.6 1005.4 1006.8 1006.9 1002.9 MAX. QNH PRESSURE IN HPA 1015.1 1011.8 1015.1 1008.4 1007.4 1001.7 993.9 997.8 1005.7 1008.4 1012.0 1012.5 1015.1 DAY 8 11 11 18 12 4 4 31 18 8 4 29 MIN. QNH PRESSURE IN HPA 999.4 1006.4 999.7 1002.9 998.9 989.2 986.4 989.9 997.0 1002.8 1002.6 1002.3 986.4 DAY 17 9 25 3 30 29 11 1 2 1 23 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 885.4 884.3 881.5 880.6 877.9 872.0 867.0 870.1 875.8 880.6 882.1 882.4 878.3 MAX. QFE PRESSURE IN HPA 889.5 886.4 889.9 884.0 881.4 876.1 869.7 873.3 880.2 883.6 886.8 887.0 889.9 DAY 8 11 11 23 8 4 19 31 18 31 4 29 MIN. QFE PRESSURE IN HPA 876.2 881.7 874.5 878.1 874.2 865.2 862.9 865.9 872.4 878.0 878.2 878.9 862.9 DAY 17 9 25 27 30 29 11 1 2 1 23 11 MEAN QNH PRESSURE IN HPA 1011.1 1009.9 1006.7 1005.6 1002.7 996.1 990.6 994.0 1000.3 1005.6 1007.4 1007.7 1003.1 MAX. QNH PRESSURE IN HPA 1015.6 1012.1 1016.0 1009.5 1006.6 1000.7 993.5 997.6 1005.2 1009.0 1012.6 1012.8 1016.0 DAY 8 11 11 23 8 4 19 31 18 31 4 29 MIN. QNH PRESSURE IN HPA 1000.8 1006.9 998.9 1002.9 998.6 988.5 986.0 989.3 996.5 1002.8 1003.0 1003.8 986.0 DAY 17 9 25 27 30 29 11 1 2 1 23 11 MEAN QFF PRESSURE IN HPA 1010.5 1008.2 1004.2 1000.9 994.6 985.8 978.6 982.5 991.3 999.0 1004.2 1006.5 997.2 MAX. QFF PRESSURE IN HPA 1015.0 1012.3 1012.9 1005.9 999.7 991.7 982.5 987.8 995.9 1004.1 1008.9 1011.9 1015.0 DAY 8 11 11 24 8 4 23 30 18 28 30 29 MIN. QFF PRESSURE IN HPA 999.4 1003.0 995.7 996.3 988.6 975.8 973.2 976.7 986.2 995.0 1000.3 1001.1 973.2 DAY 17 23 25 29 30 29 11 1 2 1 23 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 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 9.9 12.9 16.4 23.8 30.4 35.2 36.9 35.8 31.6 25.8 19.8 16.8 24.6 MINIMUN AIR TEMPERATURE (C) 4.0 6.1 9.4 13.6 18.5 24.0 27.3 26.8 20.7 14.7 8.1 5.8 14.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 6 23 31 31 10 2 0 0 103 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 3 0 0 0 0 0 0 0 0 0 0 0 3 TEMPERATURE RECORDS LOWEST(C) -1.6 0.8 4.0 9.2 13.4 18.2 23.0 22.0 17.0 10.0 5.0 2.2 -1.6 DAY 15 14 3 8 2 2 28 27 19 30 27 9 MAXIMUM AIR TEMPERATURE (C) 14.5 17.5 21.2 29.3 35.7 40.0 42.1 41.1 37.9 32.3 27.2 24.8 30.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 16 31 30 31 31 30 25 0 1 195 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 17.4 21.7 29.8 33.0 40.2 42.6 46.5 43.2 40.4 37.2 29.1 30.0 46.5 DAY 4 5 29 20 27 30 11 19 3 1 20 12 DIF. BETWEEN (MAX.-MIN.) (C) 10.5 11.4 11.8 15.7 17.2 16.0 14.8 14.3 17.2 17.6 19.1 19.0 15.4 MEAN DAILY TEMP. (MDT) (C) 9.2 11.8 15.3 21.4 27.1 32.0 34.7 34.0 29.3 23.5 17.7 15.3 22.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 1.0 32.8 189.0 331.0 424.6 401.7 247.8 83.0 0.5 0.0 1711.5 HEATING DEG. DAYS(BASE 18 0C) 271.5 174.0 99.6 3.2 0.0 0.0 0.0 0.0 0.0 0.0 19.1 83.6 650.9 DEWPOINT (MEAN C) 3.6 4.0 8.0 7.4 8.0 8.2 11.7 12.9 9.4 4.8 2.2 -0.1 6.7 MIXING RATIO (G/KG) 5.83 6.06 7.93 7.63 7.82 7.95 10.15 11.12 8.71 6.21 5.12 4.42 7.41 VAPOUR PRESSURE (HPA) 8.19 8.50 11.09 10.64 10.88 11.03 13.98 15.36 12.14 8.74 7.26 6.28 10.34 SATURATION DEF. (HPA) 4.42 6.93 8.48 20.14 34.66 47.52 50.22 45.02 36.34 26.45 17.39 14.19 25.98 RELATIVE HUMIDITY (MEAN %) 68 59 61 38 27 21 24 28 28 28 33 35 38 RELATIVE HUMIDITY (MAX. %) 90 84 87 62 44 33 39 43 46 45 53 53 57 RELATIVE HUMIDITY (MIN. %) 49 41 43 25 18 14 16 18 17 17 22 22 25 RELATIVE HUMIDITY (MEAN% 03UTC) 90 83 87 62 44 33 39 43 46 45 53 53 57 RELATIVE HUMIDITY (MEAN% 09UTC) 57 47 50 28 20 16 19 23 21 21 24 25 29 RELATIVE HUMIDITY (MEAN% 15UTC) 66 55 57 35 23 18 20 23 24 26 33 35 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 93.6 55.2 63.9 5.3 0.0 0.0 0.5 0.0 0.2 0.0 0.0 0.0 218.7 DAYS WITH PRECIPITATION >=10 4 1 2 0 0 0 0 0 0 0 0 0 7 DAYS WITH PRECIPITATION >= 5 5 2 3 1 0 0 0 0 0 0 0 0 11 DAYS WITH PRECIPITATION >= 1 7 2 6 1 0 0 0 0 0 0 0 0 16 DAYS WITH PRECIPITATION 7 6 13 3 1 0 2 1 1 0 0 0 34 GREATEST DAILY PRECIPITATION 30.0 46.0 40.2 5.0 0.0 0.0 0.3 0.0 0.2 0.0 0.0 0.0 46.0 DAY 2 12 19 23 ** ** 17 ** 15 ** ** ** DAY WITH THUNDER STORM 0 1 3 2 1 0 4 1 1 0 0 0 13 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 0 0 6 10 1 3 6 3 2 0 1 32 WIND DIRECTION (PREVAILING) 180 135 225 225 225 225 45 45 135 225 180 135 225 PREVAILING WIND SPEED(KNOTS) 4.9 5.2 10.1 10.8 14.3 10.0 10.8 9.4 6.9 5.7 6.0 4.0 10.3 PREVAILING WIND PERCENT 4.5 8.6 11.0 13.3 20.6 14.7 17.4 14.8 16.0 9.7 6.0 3.2 9.9 CALMS PERCENT OF WIND 82.6 62.1 56.1 52.7 40.0 38.7 26.5 29.0 44.0 56.8 78.7 89.7 54.7 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 219 236 184 221 242 318 147 174 164 114 151 163 213 VECTOR WIND MAGNITUDE(KNOTS) 1.1 0.4 1.3 2.1 4.7 0.9 0.5 0.4 1.8 0.3 0.7 0.2 0.9 WIND STEADINESES (MEAN %) 61.1 12.5 46.4 50.0 66.2 15.3 6.0 6.7 45.0 10.7 63.6 40.0 22.5 WIND SPEED (MEAN KNOTS) 1.8 3.2 2.8 4.2 7.1 5.9 8.3 6.0 4.0 2.8 1.1 0.5 4.0 FASTEST WIND DIRECTION 250 220 230 180 230 230 210 270 180 330 180 270 250 FASTEST WIND SPEED (KNOTS) 52 23 25 29 39 23 49 29 29 19 12 10 52 DAY 13 13 9 21 29 13 19 5 15 14 13 5 DAYS WITH SKY CLEAR (0-2)/8 16 16 12 15 24 27 20 24 26 31 28 26 265 DAYS WITH P.CLOUDY (3-6)/8 10 9 9 12 7 3 11 6 4 0 1 3 75 DAYS WITH CLOUDY (7-8)/8 5 3 10 3 0 0 0 1 0 0 1 2 25 DAYS WITH VISIBILITY =< 2 KM 3 0 1 0 0 0 0 0 0 0 0 0 4 DURATION OF SUNSHINE HOURS 208.7 223.1 219.4 290.1 366.1 356.2 341.3 337.4 321.2 323.6 289.6 270.8 3547.5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 881.8 881.5 880.8 878.8 876.7 873.7 871.3 875.4 879.8 885.1 888.4 890.0 880.3 MAX. QFE PRESSURE IN HPA 889.2 887.8 887.2 886.3 883.0 878.9 877.6 880.7 885.0 891.5 893.5 896.1 896.1 DAY-HOUR 4- 6 5- 6 26- 6 12- 6 8- 6 5- 6 22- 6 28- 6 25- 6 25- 6 21- 6 10- 6 MIN. QFE PRESSURE IN HPA 874.0 874.0 874.0 873.5 870.3 866.8 864.7 870.9 874.0 879.3 883.9 884.1 864.7 DAY-HOUR 13- 3 13-12 15-12 21-12 30-12 30-15 8-15 12-15 3-12 3-15 17-12 21-12 MEAN QNH PRESSURE IN HPA 1007.0 1006.7 1005.9 1003.6 1001.3 998.0 995.3 999.9 1004.8 1010.6 1014.3 1016.2 1005.3 MAX. QNH PRESSURE IN HPA 1015.3 1013.7 1013.0 1012.0 1008.4 1003.8 1002.3 1005.8 1010.6 1017.8 1020.0 1022.9 1022.9 DAY-HOUR 4- 6 5- 6 26- 6 12- 6 8- 6 5- 6 22- 6 28- 6 25- 6 25- 6 21- 6 10- 6 MIN. QNH PRESSURE IN HPA 998.3 998.3 998.3 997.8 994.2 990.3 988.0 994.9 998.3 1004.2 1009.4 1009.6 988.0 DAY-HOUR 13- 3 13-12 15-12 21-12 30-12 30-15 8-15 12-15 3-12 3-15 17-12 21-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 881.7 881.8 881.0 879.3 877.5 874.7 872.4 876.6 880.8 885.6 889.0 890.5 880.9 MAX. QFE PRESSURE IN HPA 887.5 886.5 885.1 885.4 881.9 878.3 876.9 880.0 884.4 890.1 892.1 894.6 894.6 DAY 4 5 26 12 8 20 23 28 26 26 21 10 MIN. QFE PRESSURE IN HPA 874.0 874.9 875.7 875.3 873.3 870.0 867.4 873.3 877.4 881.5 886.1 886.5 867.4 DAY 13 13 2 24 30 30 8 13 3 1 17 21 MEAN QNH PRESSURE IN HPA 1006.9 1007.0 1006.1 1004.2 1002.2 999.1 996.5 1001.2 1005.9 1011.3 1015.0 1016.7 1006.0 MAX. QNH PRESSURE IN HPA 1013.4 1012.3 1010.7 1011.0 1007.1 1003.1 1001.6 1005.0 1009.9 1016.3 1018.5 1021.3 1021.3 DAY 4 5 26 12 8 20 23 28 26 26 21 10 MIN. QNH PRESSURE IN HPA 998.3 999.3 1000.2 999.8 997.6 993.9 991.0 997.6 1002.1 1006.7 1011.8 1012.3 991.0 DAY 13 13 2 24 30 30 8 13 3 1 17 21 MEAN QFF PRESSURE IN HPA 1006.4 1005.3 1002.7 998.1 993.3 988.1 984.4 989.5 996.6 1004.9 1011.7 1014.6 999.6 MAX. QFF PRESSURE IN HPA 1011.5 1010.5 1007.1 1005.1 998.9 992.8 989.6 994.2 1001.1 1011.5 1015.4 1019.6 1019.6 DAY 4 24 6 12 8 20 23 26 26 26 21 10 MIN. QFF PRESSURE IN HPA 997.4 998.2 996.9 993.0 987.0 982.3 978.9 985.0 991.9 997.9 1007.8 1010.4 978.9 DAY 13 13 30 21 30 30 8 13 3 1 17 21 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 883.2 883.2 882.3 880.5 878.3 875.3 872.9 877.3 881.8 886.9 890.3 892.1 882.0 MAX. QFE PRESSURE IN HPA 889.2 887.8 887.2 886.3 883.0 878.9 877.6 880.7 885.0 891.5 893.5 896.1 896.1 DAY 4 5 26 12 8 5 22 28 25 25 21 10 MIN. QFE PRESSURE IN HPA 874.0 876.4 877.2 876.3 873.1 870.2 868.0 874.2 878.2 882.8 887.4 888.0 868.0 DAY 13 13 2 24 30 30 8 13 3 1 17 21 MEAN QNH PRESSURE IN HPA 1008.6 1008.6 1007.6 1005.5 1003.1 999.8 997.1 1002.0 1007.0 1012.7 1016.5 1018.4 1007.2 MAX. QNH PRESSURE IN HPA 1015.3 1013.7 1013.0 1012.0 1008.4 1003.8 1002.3 1005.8 1010.6 1017.8 1020.0 1022.9 1022.9 DAY 4 5 26 12 8 5 22 28 25 25 21 10 MIN. QNH PRESSURE IN HPA 998.3 1001.0 1001.9 1000.9 997.3 994.1 991.6 998.6 1003.0 1008.1 1013.3 1013.9 991.6 DAY 13 13 2 24 30 30 8 13 3 1 17 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 882.1 881.8 881.2 879.3 877.2 874.2 871.7 875.8 880.2 885.3 888.4 890.1 880.6 MAX. QFE PRESSURE IN HPA 888.5 886.2 886.3 885.0 881.3 878.0 876.6 879.0 883.3 889.9 891.7 893.7 893.7 DAY 4 4 26 12 8 5 22 28 25 25 21 10 MIN. QFE PRESSURE IN HPA 874.2 874.9 875.6 875.5 871.2 869.0 867.0 873.0 876.2 881.3 885.4 885.2 867.0 DAY 13 13 15 24 30 30 8 13 3 1 17 21 MEAN QNH PRESSURE IN HPA 1007.4 1007.0 1006.4 1004.3 1001.9 998.6 995.7 1000.4 1005.2 1010.9 1014.4 1016.2 1005.7 MAX. QNH PRESSURE IN HPA 1014.5 1011.9 1012.0 1010.6 1006.5 1002.8 1001.2 1003.9 1008.7 1016.0 1018.0 1020.3 1020.3 DAY 4 4 26 12 8 5 22 28 25 25 21 10 MIN. QNH PRESSURE IN HPA 998.6 999.3 1000.1 1000.0 995.2 992.8 990.5 997.2 1000.8 1006.5 1011.0 1010.8 990.5 DAY 13 13 15 24 30 30 8 13 3 1 17 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 880.7 880.1 879.5 877.4 875.4 872.4 869.9 873.9 878.2 883.6 886.8 888.4 878.9 MAX. QFE PRESSURE IN HPA 886.4 884.9 884.0 882.8 879.0 876.0 875.0 876.9 881.3 888.3 890.0 892.0 892.0 DAY 4 5 26 12 7 5 22 28 25 25 21 10 MIN. QFE PRESSURE IN HPA 874.0 874.0 874.0 873.5 870.3 867.4 865.4 871.3 874.0 879.4 883.9 884.1 865.4 DAY 13 13 15 21 30 30 8 4 3 1 17 21 MEAN QNH PRESSURE IN HPA 1005.8 1005.1 1004.5 1002.1 999.9 996.6 993.8 998.2 1003.0 1009.0 1012.6 1014.4 1003.7 MAX. QNH PRESSURE IN HPA 1012.1 1010.5 1009.5 1008.1 1003.9 1000.6 999.4 1001.6 1006.5 1014.3 1016.2 1018.4 1018.4 DAY 4 5 26 12 7 5 22 28 25 25 21 10 MIN. QNH PRESSURE IN HPA 998.3 998.3 998.3 997.8 994.2 991.0 988.7 995.3 998.3 1004.3 1009.4 1009.6 988.7 DAY 13 13 15 21 30 30 8 4 3 1 17 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 881.2 880.6 880.0 877.5 875.1 872.0 869.6 873.6 878.2 883.9 887.5 889.2 879.0 MAX. QFE PRESSURE IN HPA 887.2 885.3 884.8 882.7 879.0 876.0 874.7 879.0 881.5 888.4 890.4 892.6 892.6 DAY 4 3 26 2 7 19 22 25 29 25 20 10 MIN. QFE PRESSURE IN HPA 876.0 875.2 874.4 873.5 871.0 866.8 864.7 870.9 874.3 879.3 884.4 885.5 864.7 DAY 13 13 15 21 30 30 8 12 3 3 17 21 MEAN QNH PRESSURE IN HPA 1006.4 1005.6 1005.0 1002.2 999.6 996.2 993.5 997.9 1003.0 1009.4 1013.3 1015.3 1003.9 MAX. QNH PRESSURE IN HPA 1013.0 1010.9 1010.4 1008.0 1003.9 1000.6 999.1 1003.9 1006.7 1014.4 1016.6 1019.0 1019.0 DAY 4 3 26 2 7 19 22 25 29 25 20 10 MIN. QNH PRESSURE IN HPA 1000.6 999.7 998.8 997.8 995.0 990.3 988.0 994.9 998.7 1004.2 1009.9 1011.1 988.0 DAY 13 13 15 21 30 30 8 12 3 3 17 21 MEAN QFF PRESSURE IN HPA 1005.9 1003.9 1001.6 995.9 990.6 984.9 981.4 986.1 993.6 1002.9 1009.9 1013.1 997.5 MAX. QFF PRESSURE IN HPA 1010.8 1009.8 1005.7 1001.6 995.6 990.4 987.9 993.8 997.8 1009.5 1013.7 1017.5 1017.5 DAY 4 23 7 1 7 19 19 25 29 25 21 10 MIN. QFF PRESSURE IN HPA 1000.2 998.9 995.4 990.0 985.0 978.7 975.6 982.0 988.3 996.1 1005.8 1008.9 975.6 DAY 6 26 15 21 30 30 8 12 3 1 17 22 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 11.7 14.1 16.0 24.3 30.9 35.4 35.7 35.1 30.9 25.4 19.1 14.1 24.4 MINIMUN AIR TEMPERATURE (C) 5.4 8.5 7.9 13.4 19.0 22.6 26.3 25.2 19.7 13.7 9.2 3.5 14.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 6 25 31 28 8 0 0 0 98 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 1 0 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS LOWEST(C) -1.0 3.2 4.0 8.6 13.8 19.4 22.6 19.4 16.4 11.0 4.0 0.2 -1.0 DAY 5 1 9 10 7 8 29 28 27 23 30 31 MAXIMUM AIR TEMPERATURE (C) 16.6 18.5 21.4 30.5 36.6 41.2 41.2 40.6 37.5 32.4 25.5 21.9 30.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 17 31 30 31 31 30 29 1 0 200 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 22.6 21.2 29.0 34.8 40.2 43.0 43.2 41.8 40.4 34.8 30.2 24.8 43.2 DAY 31 26 26 28 31 29 5 25 9 2 1 9 DIF. BETWEEN (MAX.-MIN.) (C) 11.2 10.0 13.5 17.1 17.6 18.6 14.9 15.4 17.8 18.7 16.3 18.4 15.8 MEAN DAILY TEMP. (MDT) (C) 11.0 13.5 14.6 21.9 27.8 31.9 33.7 32.9 28.6 23.1 17.4 12.7 22.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 47.8 210.3 327.4 394.6 368.3 228.9 65.4 2.5 0.0 1645.5 HEATING DEG. DAYS(BASE 18 0C) 218.4 127.0 110.7 1.7 0.0 0.0 0.0 0.0 0.0 0.0 41.9 164.9 664.4 DEWPOINT (MEAN C) 1.9 7.9 4.4 5.6 4.6 7.3 11.2 10.0 9.1 3.8 2.8 -3.1 5.5 MIXING RATIO (G/KG) 5.29 7.76 6.14 6.60 6.19 7.46 9.89 8.95 8.48 5.75 5.40 3.58 6.79 VAPOUR PRESSURE (HPA) 7.47 10.93 8.64 9.28 8.68 10.41 13.70 12.46 11.84 8.12 7.65 5.10 9.52 SATURATION DEF. (HPA) 6.70 5.56 10.53 22.81 37.99 49.62 46.60 46.11 35.20 26.35 15.76 12.11 26.28 RELATIVE HUMIDITY (MEAN %) 56 70 51 33 21 20 25 24 28 27 37 34 36 RELATIVE HUMIDITY (MAX. %) 78 91 75 57 38 35 42 38 48 47 62 58 56 RELATIVE HUMIDITY (MIN. %) 40 52 35 20 13 12 16 15 17 16 23 20 23 RELATIVE HUMIDITY (MEAN% 03UTC) 77 89 74 57 38 35 41 38 48 47 62 57 55 RELATIVE HUMIDITY (MEAN% 09UTC) 47 59 39 24 15 15 21 19 22 19 28 23 28 RELATIVE HUMIDITY (MEAN% 15UTC) 53 68 44 27 19 15 19 20 24 25 33 33 32 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 60.4 164.5 82.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.1 0.2 308.2 DAYS WITH PRECIPITATION >=10 1 3 1 0 0 0 0 0 0 0 0 0 5 DAYS WITH PRECIPITATION >= 5 3 5 2 0 0 0 0 0 0 0 0 0 10 DAYS WITH PRECIPITATION >= 1 5 9 7 0 0 0 1 0 0 0 0 0 22 DAYS WITH PRECIPITATION 9 16 9 1 0 0 1 0 0 0 1 1 38 GREATEST DAILY PRECIPITATION 41.0 77.0 62.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.1 0.2 77.0 DAY 18 6 2 ** ** ** 13 ** ** ** 23 12 DAY WITH THUNDER STORM 2 1 3 0 2 0 2 2 2 0 1 0 15 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 0 3 9 4 10 15 3 2 4 6 3 59 WIND DIRECTION (PREVAILING) 135 135 135 225 45 225 135 225 135 135 225 180 135 PREVAILING WIND SPEED(KNOTS) 5.8 5.3 5.4 9.4 8.7 8.8 7.3 8.4 5.6 5.0 9.2 4.7 5.9 PREVAILING WIND PERCENT 6.5 8.6 12.3 16.7 15.5 19.3 14.2 14.8 13.3 11.6 14.7 7.1 10.1 CALMS PERCENT OF WIND 71.6 82.9 61.3 41.3 34.8 36.7 32.3 33.5 45.3 55.5 48.7 73.5 51.3 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 159 168 148 208 317 213 153 186 141 140 208 201 187 VECTOR WIND MAGNITUDE(KNOTS) 0.3 0.7 0.8 2.3 0.3 2.3 1.1 0.4 0.9 0.8 1.3 0.7 0.8 WIND STEADINESES (MEAN %) 16.7 70.0 34.8 48.9 6.1 45.1 21.2 8.3 26.5 33.3 39.4 50.0 24.2 WIND SPEED (MEAN KNOTS) 1.8 1.0 2.3 4.7 4.9 5.1 5.2 4.8 3.4 2.4 3.3 1.4 3.3 FASTEST WIND DIRECTION 240 210 270 250 210 210 90 240 290 60 240 240 210 FASTEST WIND SPEED (KNOTS) 23 14 29 29 39 16 23 39 23 12 17 12 39 DAY 25 16 2 5 24 10 8 17 4 1 8 18 DAYS WITH SKY CLEAR (0-2)/8 13 9 20 25 30 30 22 21 26 31 22 24 273 DAYS WITH P.CLOUDY (3-6)/8 9 10 6 4 1 0 8 10 4 0 7 7 66 DAYS WITH CLOUDY (7-8)/8 9 9 5 1 0 0 1 0 0 0 1 0 26 DAYS WITH VISIBILITY =< 2 KM 2 3 0 0 0 1 0 1 0 0 0 0 7 DURATION OF SUNSHINE HOURS 199.3 175.0 272.2 326.9 377.8 368.1 333.9 335.1 315.7 322.2 276.5 281.8 3584.5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 887.1 888.5 885.1 884.8 881.2 878.3 875.8 878.6 881.4 886.7 888.9 891.9 884.0 MAX. QFE PRESSURE IN HPA 891.5 894.0 889.5 889.1 886.9 886.0 879.9 885.0 888.9 890.8 894.6 897.0 897.0 DAY-HOUR 15- 6 12- 6 20- 6 4- 6 28- 6 1- 6 1- 6 19- 6 30- 6 28- 6 14- 6 24- 6 MIN. QFE PRESSURE IN HPA 880.0 881.0 879.5 880.0 874.8 872.1 870.0 873.4 877.4 882.0 883.7 886.4 870.0 DAY-HOUR 18-12 6-12 2-15 19-15 21-15 23-15 12-15 14-15 16-12 8-12 1-12 15-12 MEAN QNH PRESSURE IN HPA 1013.0 1014.4 1010.7 1010.4 1006.4 1003.1 1000.3 1003.5 1006.6 1012.5 1014.9 1018.3 1009.5 MAX. QNH PRESSURE IN HPA 1017.8 1020.6 1015.6 1015.1 1012.7 1011.7 1004.9 1010.6 1014.9 1017.0 1021.3 1023.9 1023.9 DAY-HOUR 15- 6 12- 6 20- 6 4- 6 28- 6 1- 6 1- 6 19- 6 30- 6 28- 6 14- 6 24- 6 MIN. QNH PRESSURE IN HPA 1005.0 1006.1 1004.5 1005.0 999.2 996.2 993.9 997.7 1002.1 1007.2 1009.1 1012.1 993.9 DAY-HOUR 18-12 6-12 2-15 19-15 21-15 23-15 12-15 14-15 16-12 8-12 1-12 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 887.2 888.6 885.2 885.3 882.0 879.2 876.7 879.6 882.2 887.5 889.4 892.4 884.6 MAX. QFE PRESSURE IN HPA 889.9 891.0 887.9 888.1 886.5 885.0 879.4 884.1 887.3 889.6 893.5 895.5 895.5 DAY 15 12 20 4 28 1 1 19 30 29 15 24 MIN. QFE PRESSURE IN HPA 880.6 881.1 880.0 882.5 878.0 874.2 872.9 876.0 879.6 885.0 886.1 889.4 872.9 DAY 18 6 2 19 21 24 12 7 16 8 1 15 MEAN QNH PRESSURE IN HPA 1013.0 1014.6 1010.8 1010.9 1007.3 1004.1 1001.3 1004.6 1007.5 1013.4 1015.4 1018.8 1010.1 MAX. QNH PRESSURE IN HPA 1016.0 1017.3 1013.8 1014.0 1012.3 1010.6 1004.3 1009.6 1013.1 1015.7 1020.0 1022.3 1022.3 DAY 15 12 20 4 28 1 1 19 30 29 15 24 MIN. QNH PRESSURE IN HPA 1005.7 1006.2 1005.0 1007.8 1002.8 998.6 997.1 1000.6 1004.6 1010.6 1011.8 1015.5 997.1 DAY 18 6 2 19 21 24 12 7 16 8 1 15 MEAN QFF PRESSURE IN HPA 1011.9 1012.1 1008.0 1004.9 998.4 993.4 989.6 993.5 998.5 1007.3 1011.8 1018.0 1004.0 MAX. QFF PRESSURE IN HPA 1015.2 1015.0 1011.3 1008.6 1003.0 1000.2 993.1 998.8 1005.7 1010.1 1017.4 1022.4 1022.4 DAY 5 12 20 1 1 1 1 19 30 29 15 24 MIN. QFF PRESSURE IN HPA 1003.2 1003.8 1000.7 1001.0 993.1 987.5 985.2 989.3 995.5 1004.0 1006.4 1013.3 985.2 DAY 18 6 2 9 22 24 12 7 1 3 1 16 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 888.7 890.0 886.7 886.5 882.9 879.8 877.4 880.4 883.3 888.7 890.8 893.8 885.8 MAX. QFE PRESSURE IN HPA 891.5 894.0 889.5 889.1 886.9 886.0 879.9 885.0 888.9 890.8 894.6 897.0 897.0 DAY 15 12 20 4 28 1 1 19 30 28 14 24 MIN. QFE PRESSURE IN HPA 883.0 883.1 882.1 883.3 878.9 874.8 873.3 876.4 880.5 886.0 887.1 890.8 873.3 DAY 18 6 2 19 21 24 12 7 16 8 4 15 MEAN QNH PRESSURE IN HPA 1014.7 1016.2 1012.5 1012.3 1008.3 1004.8 1002.1 1005.4 1008.7 1014.8 1017.0 1020.4 1011.4 MAX. QNH PRESSURE IN HPA 1017.8 1020.6 1015.6 1015.1 1012.7 1011.7 1004.9 1010.6 1014.9 1017.0 1021.3 1023.9 1023.9 DAY 15 12 20 4 28 1 1 19 30 28 14 24 MIN. QNH PRESSURE IN HPA 1008.4 1008.5 1007.4 1008.7 1003.8 999.2 997.6 1001.0 1005.6 1011.7 1012.9 1017.0 997.6 DAY 18 6 2 19 21 24 12 7 16 8 4 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 887.5 889.0 885.8 885.5 881.8 878.7 876.2 879.1 881.9 887.0 889.0 892.0 884.5 MAX. QFE PRESSURE IN HPA 890.9 893.0 888.4 888.1 885.3 885.0 878.6 883.6 887.1 889.0 892.9 895.4 895.4 DAY 15 12 26 1 28 1 1 19 30 16 14 24 MIN. QFE PRESSURE IN HPA 881.8 881.8 881.5 882.1 877.3 873.9 872.0 875.5 879.0 884.0 885.0 888.6 872.0 DAY 18 6 5 19 21 24 12 7 17 8 1 15 MEAN QNH PRESSURE IN HPA 1013.4 1015.0 1011.4 1011.1 1007.0 1003.6 1000.8 1004.0 1007.1 1012.8 1015.1 1018.4 1010.0 MAX. QNH PRESSURE IN HPA 1017.2 1019.5 1014.4 1014.0 1010.9 1010.6 1003.5 1009.0 1012.9 1015.0 1019.4 1022.2 1022.2 DAY 15 12 26 1 28 1 1 19 30 16 14 24 MIN. QNH PRESSURE IN HPA 1007.0 1007.0 1006.7 1007.4 1002.0 998.2 996.1 1000.0 1003.9 1009.5 1010.6 1014.6 996.1 DAY 18 6 5 19 21 24 12 7 17 8 1 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 885.9 887.1 883.9 883.5 879.9 877.2 874.5 877.1 879.9 885.2 887.4 890.4 882.7 MAX. QFE PRESSURE IN HPA 889.5 890.9 887.1 886.8 883.4 882.9 877.2 881.4 885.1 887.5 891.1 893.8 893.8 DAY 14 12 28 4 1 1 1 19 30 16 14 24 MIN. QFE PRESSURE IN HPA 880.0 881.0 879.8 880.3 875.5 872.1 870.3 873.8 877.4 882.0 883.7 886.4 870.3 DAY 18 6 2 19 20 24 12 14 16 8 1 15 MEAN QNH PRESSURE IN HPA 1011.6 1013.0 1009.4 1008.9 1004.9 1001.8 998.9 1001.8 1004.9 1010.8 1013.2 1016.6 1008.0 MAX. QNH PRESSURE IN HPA 1015.6 1017.2 1012.9 1012.6 1008.8 1008.2 1001.9 1006.6 1010.7 1013.4 1017.4 1020.4 1020.4 DAY 14 12 28 4 1 1 1 19 30 16 14 24 MIN. QNH PRESSURE IN HPA 1005.0 1006.1 1004.8 1005.3 1000.0 996.2 994.2 998.1 1002.1 1007.2 1009.1 1012.1 994.2 DAY 18 6 2 19 20 24 12 14 16 8 1 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 886.5 887.6 884.0 883.2 879.5 876.7 874.2 876.9 880.0 885.4 888.0 891.1 882.8 MAX. QFE PRESSURE IN HPA 890.0 890.9 886.8 887.0 883.0 882.0 878.1 881.0 885.1 887.9 892.1 894.1 894.1 DAY 13 12 19 4 27 1 8 23 30 27 14 24 MIN. QFE PRESSURE IN HPA 880.6 883.1 879.5 880.0 874.8 872.1 870.0 873.4 877.7 882.0 884.4 887.1 870.0 DAY 18 6 2 19 21 23 12 14 18 8 4 15 MEAN QNH PRESSURE IN HPA 1012.2 1013.5 1009.5 1008.6 1004.4 1001.3 998.5 1001.6 1005.0 1011.0 1014.0 1017.3 1008.1 MAX. QNH PRESSURE IN HPA 1016.2 1017.2 1012.6 1012.8 1008.4 1007.2 1002.9 1006.1 1010.7 1013.8 1018.5 1020.7 1020.7 DAY 13 12 19 4 27 1 8 23 30 27 14 24 MIN. QNH PRESSURE IN HPA 1005.7 1008.5 1004.5 1005.0 999.2 996.2 993.9 997.7 1002.5 1007.2 1009.9 1012.9 993.9 DAY 18 6 2 19 21 23 12 14 18 8 4 15 MEAN QFF PRESSURE IN HPA 1011.1 1011.0 1006.5 1002.5 995.5 990.6 987.0 990.5 996.0 1004.9 1010.4 1016.4 1001.8 MAX. QFF PRESSURE IN HPA 1014.5 1014.9 1010.3 1006.8 999.5 996.3 990.6 996.1 1003.1 1008.1 1015.2 1020.6 1020.6 DAY 13 12 19 4 1 1 8 23 30 28 14 23 MIN. QFF PRESSURE IN HPA 1003.2 1005.4 1001.0 998.6 990.7 985.4 982.6 986.0 993.0 1000.5 1005.0 1010.7 982.6 DAY 18 6 2 27 21 23 12 13 10 8 1 15 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HASANABADE DARAB (40862) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 28 47 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 1107.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 11.4 13.9 17.9 26.2 32.0 34.4 36.3 35.3 30.7 24.8 16.7 13.4 24.4 MINIMUN AIR TEMPERATURE (C) 4.9 5.5 8.1 15.1 19.0 22.4 28.0 25.7 19.5 13.9 8.9 6.0 14.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 1 4 23 31 31 8 0 0 0 98 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 0.8 2.4 2.8 8.8 15.8 19.4 23.6 21.2 15.0 10.2 2.8 1.0 0.8 DAY 4 4 11 1 13 16 28 30 24 25 26 28 MAXIMUM AIR TEMPERATURE (C) 16.5 19.9 24.1 32.3 38.1 40.1 41.0 40.6 37.2 31.5 22.3 18.9 30.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 25 31 30 31 31 30 28 1 0 207 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 22.8 24.6 29.7 35.6 41.0 44.6 43.6 42.0 40.5 36.0 30.5 24.5 44.6 DAY 1 29 24 21 28 30 10 3 9 1 1 5 DIF. BETWEEN (MAX.-MIN.) (C) 11.6 14.4 16.0 17.2 19.1 17.7 13.0 14.9 17.7 17.6 13.4 12.9 15.4 MEAN DAILY TEMP. (MDT) (C) 10.7 12.7 16.1 23.7 28.5 31.3 34.5 33.2 28.3 22.7 15.6 12.5 22.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 1.8 89.4 234.0 307.5 419.5 377.1 220.4 52.5 0.3 0.0 1702.8 HEATING DEG. DAYS(BASE 18 0C) 226.8 154.9 75.7 0.8 0.0 0.0 0.0 0.0 0.0 0.0 82.6 172.0 712.7 DEWPOINT (MEAN C) 2.3 0.4 -1.6 4.0 3.4 3.4 3.1 6.0 6.0 3.8 4.8 3.1 3.2 MIXING RATIO (G/KG) 5.43 4.57 3.99 5.91 5.72 5.73 5.89 7.03 6.81 5.83 6.27 5.59 5.73 VAPOUR PRESSURE (HPA) 7.68 6.47 5.66 8.33 8.04 8.03 8.22 9.81 9.54 8.23 8.85 7.90 8.06 SATURATION DEF. (HPA) 6.29 10.24 16.09 27.57 41.96 48.72 53.53 49.06 36.84 24.64 11.15 8.21 27.86 RELATIVE HUMIDITY (MEAN %) 60 43 30 27 19 16 14 19 23 29 50 55 32 RELATIVE HUMIDITY (MAX. %) 81 68 53 46 37 32 23 31 41 50 76 79 51 RELATIVE HUMIDITY (MIN. %) 42 26 16 15 10 10 9 12 14 17 31 35 20 RELATIVE HUMIDITY (MEAN% 03UTC) 79 68 53 46 37 32 23 31 41 49 75 78 51 RELATIVE HUMIDITY (MEAN% 09UTC) 50 33 21 18 13 12 11 14 18 20 38 42 24 RELATIVE HUMIDITY (MEAN% 15UTC) 57 38 23 24 15 11 12 15 20 28 50 56 29 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 114.7 0.1 0.0 0.1 0.0 0.0 0.0 0.8 0.0 1.6 13.0 65.1 195.4 DAYS WITH PRECIPITATION >=10 2 0 0 0 0 0 0 0 0 0 0 2 4 DAYS WITH PRECIPITATION >= 5 6 0 0 0 0 0 0 0 0 0 1 2 9 DAYS WITH PRECIPITATION >= 1 8 0 0 0 0 0 0 0 0 1 3 2 14 DAYS WITH PRECIPITATION 12 2 1 1 0 0 0 1 0 2 6 4 29 GREATEST DAILY PRECIPITATION 58.0 0.1 0.0 0.1 0.0 0.0 0.0 0.8 0.0 1.6 5.0 42.0 58.0 DAY 17 14 ** 25 **