STATION OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 13.7 17.3 ***** ***** ***** ***** ***** ***** 34.9 28.1 21.3 13.6 ***** MINIMUN AIR TEMPERATURE (C) 7.0 8.7 ***** ***** ***** ***** ***** ***** 22.1 16.1 14.2 7.5 ***** DAYS WITH MINIMUM TEMP. >=21 0 0 **** **** **** **** **** **** 24 4 0 0 **** DAYS WITH MINIMUM TEMP. <=-4 0 0 **** **** **** **** **** **** 0 0 0 0 **** DAYS WITH FREEZING MIN.<= 0 0 0 **** **** **** **** **** **** 0 0 0 0 **** TEMPERATURE RECORDS LOWEST(C) 2.2 3.0 ***** ***** ***** ***** ***** ***** 18.5 5.3 9.3 0.8 ***** DAY 24 1 ** ** ** ** ** ** 23 21 21 11 MAXIMUM AIR TEMPERATURE (C) 19.4 23.5 ***** ***** ***** ***** ***** ***** 42.5 35.3 26.3 18.4 ***** DAYS WITH MAXIMUM TEMP. >=30 0 0 **** **** **** **** **** **** 30 26 7 0 **** DAYS WITH MAXIMUM TEMP. <= 0 0 0 **** **** **** **** **** **** 0 0 0 0 **** TEMPERATURE RECORDS HIGHEST(C) 24.6 28.1 ***** ***** ***** ***** ***** ***** 46.0 42.0 32.5 25.5 ***** DAY 14 13 ** ** ** ** ** ** 3 1 2 3 DIF. BETWEEN (MAX.-MIN.) (C) 12.4 14.8 ***** ***** ***** ***** ***** ***** 20.4 19.2 12.1 10.9 ***** MEAN DAILY TEMP. (MDT) (C) 13.2 16.1 ***** ***** ***** ***** ***** ***** 32.3 25.7 20.3 12.9 ***** COOLING DEG. DAYS(BASE 21 0C) 0.0 2.3 ****** ****** ****** ****** ****** ****** 340.0 163.9 26.8 0.0 ****** HEATING DEG. DAYS(BASE 18 0C) 149.0 68.4 ****** ****** ****** ****** ****** ****** 0.0 4.5 14.3 154.6 ****** DEWPOINT (MEAN C) 7.0 4.1 ***** ***** ***** ***** ***** ***** 13.2 7.5 13.3 7.5 ***** MIXING RATIO (G/KG) 6.32 5.31 ****** ****** ****** ****** ****** ****** 9.95 6.81 9.64 6.66 ****** VAPOUR PRESSURE (HPA) 10.22 8.59 ****** ****** ****** ****** ****** ****** 15.77 10.94 15.50 10.77 ****** SATURATION DEF. (HPA) 6.18 12.30 ****** ****** ****** ****** ****** ****** 43.83 30.63 10.89 5.49 ****** RELATIVE HUMIDITY (MEAN %) 68 46 *** *** *** *** *** *** 31 30 64 70 *** RELATIVE HUMIDITY (MAX. %) 88 73 *** *** *** *** *** *** 55 51 84 88 *** RELATIVE HUMIDITY (MIN. %) 50 28 *** *** *** *** *** *** 17 18 49 52 *** RELATIVE HUMIDITY (MEAN% 03UTC) 86 72 *** *** *** *** *** *** 55 51 82 85 *** RELATIVE HUMIDITY (MEAN% 09UTC) 62 38 *** *** *** *** *** *** 25 24 56 66 *** RELATIVE HUMIDITY (MEAN% 15UTC) 61 34 *** *** *** *** *** *** 20 24 59 62 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 26.8 0.2 ****** ****** ****** ****** ****** ****** 0.0 0.0 75.9 63.1 ****** DAYS WITH PRECIPITATION >=10 0 0 **** **** **** **** **** **** 0 0 2 2 **** DAYS WITH PRECIPITATION >= 5 2 0 **** **** **** **** **** **** 0 0 4 4 **** DAYS WITH PRECIPITATION >= 1 7 0 **** **** **** **** **** **** 0 0 7 6 **** DAYS WITH PRECIPITATION 9 1 **** **** **** **** **** **** 0 0 7 9 **** GREATEST DAILY PRECIPITATION 8.0 0.2 ****** ****** ****** ****** ****** ****** 0.0 0.0 29.0 24.2 ****** DAY 29 8 ** ** ** ** ** ** ** ** 12 27 DAY WITH THUNDER STORM 0 0 **** **** **** **** **** **** 0 0 1 0 **** DAYS WITH SNOW OR SLEET 0 0 **** **** **** **** **** **** 0 0 0 0 **** DAYS WITH DUST 0 4 **** **** **** **** **** **** 3 6 3 1 **** WIND DIRECTION (PREVAILING) 270 270 *** *** *** *** *** *** 135 135 315 315 *** PREVAILING WIND SPEED(KNOTS) 7.0 9.1 **** **** **** **** **** **** 6.6 7.7 8.7 8.8 **** PREVAILING WIND PERCENT 12.9 22.1 ***** ***** ***** ***** ***** ***** 18.7 22.6 14.7 21.9 ***** CALMS PERCENT OF WIND 50.3 33.1 ***** ***** ***** ***** ***** ***** 26.7 41.3 42.7 49.7 ***** NO. OF WIND OBSERVATION 155 145 **** **** **** **** **** **** 150 155 150 155 910 VECTOR WIND DIRECTION (MEAN) 227 157 *** *** *** *** *** *** 226 207 241 291 *** VECTOR WIND MAGNITUDE(KNOTS) 0.7 1.6 **** **** **** **** **** **** 1.7 1.7 0.7 1.7 **** WIND STEADINESES (MEAN %) 17.9 25.0 ***** ***** ***** ***** ***** ***** 33.3 34.7 14.3 38.6 ***** WIND SPEED (MEAN KNOTS) 3.9 6.4 **** **** **** **** **** **** 5.1 4.9 4.9 4.4 **** FASTEST WIND DIRECTION 210 120 *** *** *** *** *** *** 320 200 270 90 *** FASTEST WIND SPEED (KNOTS) 16 29 *** *** *** *** *** *** 16 19 23 19 *** DAY 31 23 ** ** ** ** ** ** 6 17 8 13 DAYS WITH SKY CLEAR (0-2)/8 12 17 **** **** **** **** **** **** 29 28 8 13 **** DAYS WITH P.CLOUDY (3-6)/8 15 11 **** **** **** **** **** **** 1 2 14 11 **** DAYS WITH CLOUDY (7-8)/8 4 1 **** **** **** **** **** **** 0 1 8 7 **** DAYS WITH VISIBILITY =< 2 KM 8 2 **** **** **** **** **** **** 3 6 1 4 **** DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 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 1016.4 1015.9 ****** ****** ****** ****** ****** ****** 1002.9 1011.4 1015.2 1017.2 ****** MAX. QFE PRESSURE IN HPA 1023.4 1020.9 ****** ****** ****** ****** ****** ****** 1008.8 1021.9 1021.6 1023.7 ****** DAY-HOUR 5- 6 29- 6 **-** **-** **-** **-** **-** **-** 29- 6 20- 6 26- 6 18- 6 MIN. QFE PRESSURE IN HPA 1005.5 1007.8 ****** ****** ****** ****** ****** ****** 994.3 1004.3 1008.5 1010.3 ****** DAY-HOUR 16-15 8- 3 **-** **-** **-** **-** **-** **-** 1-15 8-12 11-15 3-12 MEAN QNH PRESSURE IN HPA 1019.4 1018.8 ****** ****** ****** ****** ****** ****** 1005.8 1014.3 1018.2 1020.1 ****** MAX. QNH PRESSURE IN HPA 1026.4 1023.9 ****** ****** ****** ****** ****** ****** 1011.7 1024.9 1024.6 1026.7 ****** DAY-HOUR 5- 6 29- 6 **-** **-** **-** **-** **-** **-** 29- 6 20- 6 26- 6 18- 6 MIN. QNH PRESSURE IN HPA 1008.4 1010.7 ****** ****** ****** ****** ****** ****** 997.2 1007.2 1011.4 1013.2 ****** DAY-HOUR 16-15 8- 3 **-** **-** **-** **-** **-** **-** 1-15 8-12 11-15 3-12 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 1016.3 1015.9 ****** ****** ****** ****** ****** ****** 1003.1 1011.3 1015.0 1017.0 ****** MAX. QFE PRESSURE IN HPA 1022.9 1020.3 ****** ****** ****** ****** ****** ****** 1007.9 1019.9 1019.9 1022.6 ****** DAY 5 21 ** ** ** ** ** ** 29 20 26 18 MIN. QFE PRESSURE IN HPA 1010.0 1007.8 ****** ****** ****** ****** ****** ****** 996.8 1005.4 1010.6 1011.9 ****** DAY 16 8 ** ** ** ** ** ** 1 17 9 28 MEAN QNH PRESSURE IN HPA 1019.2 1018.8 ****** ****** ****** ****** ****** ****** 1006.0 1014.2 1017.9 1020.0 ****** MAX. QNH PRESSURE IN HPA 1025.9 1023.3 ****** ****** ****** ****** ****** ****** 1010.8 1022.9 1022.9 1025.6 ****** DAY 5 21 ** ** ** ** ** ** 29 20 26 18 MIN. QNH PRESSURE IN HPA 1012.9 1010.7 ****** ****** ****** ****** ****** ****** 999.7 1008.3 1013.5 1014.8 ****** DAY 16 8 ** ** ** ** ** ** 1 17 9 28 MEAN QFF PRESSURE IN HPA 1019.3 1019.1 ****** ****** ****** ****** ****** ****** 1006.3 1014.4 1018.1 1020.3 ****** MAX. QFF PRESSURE IN HPA 1024.9 1023.5 ****** ****** ****** ****** ****** ****** 1010.9 1023.1 1023.1 1025.9 ****** DAY 4 21 ** ** ** ** ** ** 29 20 26 18 MIN. QFF PRESSURE IN HPA 1013.2 1011.0 ****** ****** ****** ****** ****** ****** 1000.5 1008.4 1013.8 1015.1 ****** DAY 16 8 ** ** ** ** ** ** 2 17 9 28 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 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 1017.7 1017.0 ****** ****** ****** ****** ****** ****** 1004.2 1012.7 1016.6 1018.3 ****** MAX. QFE PRESSURE IN HPA 1023.4 1020.9 ****** ****** ****** ****** ****** ****** 1008.8 1021.9 1021.6 1023.7 ****** DAY 5 29 ** ** ** ** ** ** 29 20 26 18 MIN. QFE PRESSURE IN HPA 1012.2 1009.6 ****** ****** ****** ****** ****** ****** 997.7 1006.3 1013.7 1013.1 ****** DAY 16 8 ** ** ** ** ** ** 1 8 15 28 MEAN QNH PRESSURE IN HPA 1020.7 1020.0 ****** ****** ****** ****** ****** ****** 1007.1 1015.7 1019.6 1021.3 ****** MAX. QNH PRESSURE IN HPA 1026.4 1023.9 ****** ****** ****** ****** ****** ****** 1011.7 1024.9 1024.6 1026.7 ****** DAY 5 29 ** ** ** ** ** ** 29 20 26 18 MIN. QNH PRESSURE IN HPA 1015.1 1012.5 ****** ****** ****** ****** ****** ****** 1000.6 1009.2 1016.6 1016.0 ****** DAY 16 8 ** ** ** ** ** ** 1 8 15 28 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 1017.4 1016.9 ****** ****** ****** ****** ****** ****** 1003.8 1012.2 1016.0 1018.0 ****** MAX. QFE PRESSURE IN HPA 1023.3 1020.8 ****** ****** ****** ****** ****** ****** 1008.7 1021.7 1020.8 1023.2 ****** DAY 4 1 ** ** ** ** ** ** 22 20 26 18 MIN. QFE PRESSURE IN HPA 1010.0 1010.8 ****** ****** ****** ****** ****** ****** 997.4 1005.9 1012.3 1012.7 ****** DAY 16 8 ** ** ** ** ** ** 1 8 11 3 MEAN QNH PRESSURE IN HPA 1020.4 1019.9 ****** ****** ****** ****** ****** ****** 1006.8 1015.2 1019.0 1021.0 ****** MAX. QNH PRESSURE IN HPA 1026.3 1023.8 ****** ****** ****** ****** ****** ****** 1011.6 1024.7 1023.8 1026.2 ****** DAY 4 1 ** ** ** ** ** ** 22 20 26 18 MIN. QNH PRESSURE IN HPA 1012.9 1013.7 ****** ****** ****** ****** ****** ****** 1000.3 1008.8 1015.2 1015.6 ****** DAY 16 8 ** ** ** ** ** ** 1 8 11 3 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 1015.6 1014.8 ****** ****** ****** ****** ****** ****** 1001.9 1010.5 1014.4 1016.2 ****** MAX. QFE PRESSURE IN HPA 1021.4 1019.1 ****** ****** ****** ****** ****** ****** 1006.2 1019.7 1019.2 1020.8 ****** DAY 4 20 ** ** ** ** ** ** 22 20 26 18 MIN. QFE PRESSURE IN HPA 1007.7 1010.0 ****** ****** ****** ****** ****** ****** 995.1 1004.3 1009.3 1010.3 ****** DAY 16 8 ** ** ** ** ** ** 1 8 11 3 MEAN QNH PRESSURE IN HPA 1018.5 1017.7 ****** ****** ****** ****** ****** ****** 1004.8 1013.4 1017.3 1019.1 ****** MAX. QNH PRESSURE IN HPA 1024.4 1022.1 ****** ****** ****** ****** ****** ****** 1009.1 1022.7 1022.2 1023.8 ****** DAY 4 20 ** ** ** ** ** ** 22 20 26 18 MIN. QNH PRESSURE IN HPA 1010.6 1012.9 ****** ****** ****** ****** ****** ****** 998.0 1007.2 1012.2 1013.2 ****** DAY 16 8 ** ** ** ** ** ** 1 8 11 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 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 1015.1 1014.8 ****** ****** ****** ****** ****** ****** 1001.5 1010.3 1014.3 1016.4 ****** MAX. QFE PRESSURE IN HPA 1020.1 1018.4 ****** ****** ****** ****** ****** ****** 1008.7 1019.3 1019.5 1021.0 ****** DAY 5 1 ** ** ** ** ** ** 30 20 26 17 MIN. QFE PRESSURE IN HPA 1005.5 1009.2 ****** ****** ****** ****** ****** ****** 994.3 1004.8 1008.5 1010.9 ****** DAY 16 7 ** ** ** ** ** ** 1 8 11 3 MEAN QNH PRESSURE IN HPA 1018.1 1017.8 ****** ****** ****** ****** ****** ****** 1004.4 1013.2 1017.3 1019.4 ****** MAX. QNH PRESSURE IN HPA 1023.1 1021.4 ****** ****** ****** ****** ****** ****** 1011.6 1022.3 1022.5 1024.0 ****** DAY 5 1 ** ** ** ** ** ** 30 20 26 17 MIN. QNH PRESSURE IN HPA 1008.4 1012.1 ****** ****** ****** ****** ****** ****** 997.2 1007.7 1011.4 1013.8 ****** DAY 16 7 ** ** ** ** ** ** 1 8 11 3 MEAN QFF PRESSURE IN HPA 1018.4 1018.1 ****** ****** ****** ****** ****** ****** 1004.5 1013.4 1017.5 1019.7 ****** MAX. QFF PRESSURE IN HPA 1023.4 1021.7 ****** ****** ****** ****** ****** ****** 1011.7 1022.5 1022.7 1024.3 ****** DAY 5 1 ** ** ** ** ** ** 30 20 26 17 MIN. QFF PRESSURE IN HPA 1008.7 1012.4 ****** ****** ****** ****** ****** ****** 997.3 1007.8 1011.6 1014.1 ****** DAY 16 7 ** ** ** ** ** ** 1 8 11 3 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 15.7 14.8 20.7 27.9 34.6 37.8 39.0 39.7 35.8 28.3 22.1 14.9 27.6 MINIMUN AIR TEMPERATURE (C) 9.3 6.8 11.5 17.0 21.9 23.5 25.7 26.0 21.5 15.2 13.3 9.0 16.7 DAYS WITH MINIMUM TEMP. >=21 0 0 2 4 22 27 30 31 18 1 0 0 135 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 3 1 0 0 0 0 0 0 0 0 0 4 TEMPERATURE RECORDS LOWEST(C) 4.2 -2.0 0.0 12.0 13.5 20.3 20.5 21.5 12.0 9.5 8.2 2.6 -2.0 DAY 9 7 5 9 5 1 29 1 25 23 1 7 MAXIMUM AIR TEMPERATURE (C) 20.5 20.4 26.8 34.2 41.5 45.9 46.9 47.2 43.8 36.0 28.1 19.4 34.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 10 28 31 30 31 31 30 29 10 0 230 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 25.8 25.5 34.4 39.0 48.0 49.0 50.0 49.0 47.6 43.2 33.8 29.0 50.0 DAY 28 13 19 19 30 27 10 7 1 1 4 1 DIF. BETWEEN (MAX.-MIN.) (C) 11.2 13.6 15.3 17.2 19.6 22.4 21.2 21.2 22.3 20.8 14.8 10.4 17.5 MEAN DAILY TEMP. (MDT) (C) 14.9 13.6 19.1 25.6 31.7 34.7 36.3 36.6 32.6 25.6 20.7 14.2 25.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 47.6 137.5 333.1 410.7 474.4 484.3 349.4 147.2 23.7 0.0 2408.1 HEATING DEG. DAYS(BASE 18 0C) 99.9 126.2 68.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.3 120.6 416.1 DEWPOINT (MEAN C) 10.2 2.1 3.7 6.9 8.1 7.7 6.6 10.2 6.8 2.6 8.9 8.0 6.8 MIXING RATIO (G/KG) 7.88 4.72 5.50 6.49 7.12 6.88 6.62 8.51 6.90 4.80 7.37 6.87 6.64 VAPOUR PRESSURE (HPA) 12.69 7.63 8.85 10.40 11.34 10.89 10.45 13.42 10.95 7.72 11.87 11.09 10.61 SATURATION DEF. (HPA) 5.94 10.31 17.94 29.33 47.45 59.49 64.13 63.56 52.30 34.22 16.01 6.60 33.94 RELATIVE HUMIDITY (MEAN %) 72 48 37 31 23 19 17 22 22 23 48 67 36 RELATIVE HUMIDITY (MAX. %) 90 75 62 58 45 39 34 43 45 43 69 85 57 RELATIVE HUMIDITY (MIN. %) 55 27 21 17 12 9 8 10 8 12 32 51 22 RELATIVE HUMIDITY (MEAN% 03UTC) 87 74 61 57 44 39 34 43 44 43 69 81 56 RELATIVE HUMIDITY (MEAN% 09UTC) 68 39 30 24 18 14 13 14 15 16 40 59 29 RELATIVE HUMIDITY (MEAN% 15UTC) 65 33 25 19 16 10 8 12 10 16 40 64 27 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 45.6 6.4 8.1 2.8 11.3 0.0 0.0 0.2 0.0 0.0 26.5 56.0 156.9 DAYS WITH PRECIPITATION >=10 2 0 0 0 1 0 0 0 0 0 1 3 7 DAYS WITH PRECIPITATION >= 5 2 1 0 0 1 0 0 0 0 0 2 4 10 DAYS WITH PRECIPITATION >= 1 3 1 3 1 1 0 0 0 0 0 2 5 16 DAYS WITH PRECIPITATION 7 3 5 3 2 0 0 1 0 0 3 7 31 GREATEST DAILY PRECIPITATION 30.0 6.0 3.0 1.3 11.0 0.0 0.0 0.2 0.0 0.0 20.0 17.0 30.0 DAY 2 1 30 24 13 ** ** 13 ** ** 13 19 DAY WITH THUNDER STORM 0 0 1 0 0 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 1 9 3 2 6 8 12 0 1 2 1 3 48 WIND DIRECTION (PREVAILING) 135 315 315 315 315 270 270 180 270 315 270 270 315 PREVAILING WIND SPEED(KNOTS) 10.8 11.1 9.0 9.1 9.9 11.3 11.1 7.9 8.3 9.3 7.1 7.0 9.8 PREVAILING WIND PERCENT 14.8 30.7 25.8 22.0 32.3 24.7 25.2 20.0 20.7 23.2 23.3 18.7 19.0 CALMS PERCENT OF WIND 50.3 35.7 36.1 33.3 33.5 37.3 34.2 26.5 35.3 44.5 45.3 52.9 38.8 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 155 272 277 262 294 279 277 210 258 287 272 113 269 VECTOR WIND MAGNITUDE(KNOTS) 1.1 2.2 1.9 1.5 3.9 4.5 4.8 3.0 2.8 3.4 1.3 0.3 2.2 WIND STEADINESES (MEAN %) 25.0 28.9 33.9 24.6 63.9 71.4 73.8 50.0 51.9 72.3 27.7 7.3 39.3 WIND SPEED (MEAN KNOTS) 4.4 7.6 5.6 6.1 6.1 6.3 6.5 6.0 5.4 4.7 4.7 4.1 5.6 FASTEST WIND DIRECTION 150 120 100 170 90 270 300 180 280 270 90 120 120 FASTEST WIND SPEED (KNOTS) 29 39 29 23 29 29 29 23 19 17 27 23 39 DAY 29 26 29 22 12 2 21 12 15 1 12 16 DAYS WITH SKY CLEAR (0-2)/8 9 18 11 17 16 30 28 29 30 28 14 15 245 DAYS WITH P.CLOUDY (3-6)/8 16 7 12 8 10 0 3 2 0 3 12 5 78 DAYS WITH CLOUDY (7-8)/8 6 3 8 5 5 0 0 0 0 0 4 11 42 DAYS WITH VISIBILITY =< 2 KM 13 5 0 0 2 3 6 0 0 0 1 7 37 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 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 1015.6 1014.4 1013.3 1007.8 1003.5 997.1 994.6 996.6 1002.3 1010.0 1014.6 1016.8 1007.2 MAX. QFE PRESSURE IN HPA 1021.0 1022.6 1023.9 1012.6 1010.8 1001.9 999.3 1002.3 1009.7 1016.0 1019.4 1024.0 1024.0 DAY-HOUR 24- 6 23- 6 9- 9 5- 6 12-15 9- 6 3- 6 30- 6 30- 6 31- 6 17- 6 31- 6 MIN. QFE PRESSURE IN HPA 1008.9 1002.9 1001.4 1001.3 996.8 991.2 989.6 990.2 995.5 1003.9 1008.0 1001.9 989.6 DAY-HOUR 2- 9 1-12 23-15 23-15 29-15 28-15 9-15 7-15 5-15 9-15 10-12 18-15 MEAN QNH PRESSURE IN HPA 1018.5 1017.3 1016.3 1010.8 1006.4 1000.0 997.5 999.5 1005.2 1012.9 1017.5 1019.8 1010.1 MAX. QNH PRESSURE IN HPA 1024.0 1025.6 1026.9 1015.5 1013.7 1004.8 1002.2 1005.2 1012.6 1019.0 1022.4 1027.0 1027.0 DAY-HOUR 24- 6 23- 6 9- 9 5- 6 12-15 9- 6 3- 6 30- 6 30- 6 31- 6 17- 6 31- 6 MIN. QNH PRESSURE IN HPA 1011.8 1005.8 1004.3 1004.2 999.7 994.1 992.5 993.1 998.4 1006.8 1010.9 1004.8 992.5 DAY-HOUR 2- 9 1-12 23-15 23-15 29-15 28-15 9-15 7-15 5-15 9-15 10-12 18-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1015.7 1014.2 1013.4 1007.6 1003.4 997.4 994.9 996.8 1002.2 1009.8 1014.5 1016.7 1007.2 MAX. QFE PRESSURE IN HPA 1019.6 1021.5 1022.7 1010.6 1008.1 1001.0 998.3 1001.3 1007.7 1014.5 1017.5 1022.4 1022.7 DAY 24 28 5 11 12 9 3 30 30 31 17 31 MIN. QFE PRESSURE IN HPA 1011.2 1003.4 1002.5 1004.0 997.7 993.8 992.1 991.8 997.7 1004.8 1010.1 1003.2 991.8 DAY 2 26 24 20 26 29 26 7 6 10 11 19 MEAN QNH PRESSURE IN HPA 1018.6 1017.2 1016.3 1010.6 1006.3 1000.3 997.8 999.7 1005.1 1012.7 1017.5 1019.6 1010.2 MAX. QNH PRESSURE IN HPA 1022.6 1024.5 1025.7 1013.5 1011.0 1003.9 1001.2 1004.2 1010.6 1017.4 1020.5 1025.4 1025.7 DAY 24 28 5 11 12 9 3 30 30 31 17 31 MIN. QNH PRESSURE IN HPA 1014.1 1006.3 1005.4 1006.9 1000.6 996.7 995.0 994.7 1000.6 1007.7 1013.0 1006.1 994.7 DAY 2 26 24 20 26 29 26 7 6 10 11 19 MEAN QFF PRESSURE IN HPA 1018.9 1017.5 1016.6 1010.7 1006.4 1000.4 997.9 999.8 1005.2 1012.9 1017.7 1019.9 1010.3 MAX. QFF PRESSURE IN HPA 1022.9 1024.8 1026.1 1013.7 1011.2 1004.0 1001.3 1004.3 1010.8 1017.7 1020.7 1025.7 1026.1 DAY 24 28 5 11 12 10 3 30 30 31 17 31 MIN. QFF PRESSURE IN HPA 1014.4 1006.5 1005.5 1007.0 1000.7 996.7 995.1 994.7 1000.7 1007.9 1013.2 1006.3 994.7 DAY 2 26 24 20 26 29 26 7 6 10 11 19 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 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 1016.7 1015.3 1014.6 1009.2 1004.8 998.4 995.9 998.0 1003.7 1011.3 1015.9 1017.9 1008.5 MAX. QFE PRESSURE IN HPA 1021.0 1022.6 1023.5 1012.6 1009.8 1001.9 999.3 1002.3 1009.7 1016.0 1019.4 1024.0 1024.0 DAY 24 23 9 5 12 9 3 30 30 31 17 31 MIN. QFE PRESSURE IN HPA 1011.5 1003.2 1006.3 1005.4 999.0 994.9 992.9 992.4 998.6 1006.7 1010.9 1005.0 992.4 DAY 2 26 24 19 26 28 26 7 6 9 11 19 MEAN QNH PRESSURE IN HPA 1019.7 1018.3 1017.6 1012.1 1007.7 1001.3 998.8 1000.9 1006.6 1014.3 1018.8 1020.9 1011.4 MAX. QNH PRESSURE IN HPA 1024.0 1025.6 1026.5 1015.5 1012.7 1004.8 1002.2 1005.2 1012.6 1019.0 1022.4 1027.0 1027.0 DAY 24 23 9 5 12 9 3 30 30 31 17 31 MIN. QNH PRESSURE IN HPA 1014.4 1006.1 1009.2 1008.3 1001.9 997.8 995.8 995.3 1001.5 1009.6 1013.8 1007.9 995.3 DAY 2 26 24 19 26 28 26 7 6 9 11 19 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 1016.4 1015.4 1014.6 1008.9 1004.5 998.0 995.5 997.4 1003.3 1010.9 1015.4 1017.3 1008.1 MAX. QFE PRESSURE IN HPA 1020.9 1022.3 1023.9 1012.1 1009.1 1001.4 999.3 1001.7 1009.5 1015.7 1018.6 1023.2 1023.9 DAY 24 23 9 5 12 9 3 30 30 31 17 31 MIN. QFE PRESSURE IN HPA 1008.9 1004.3 1006.7 1004.8 999.5 994.6 992.3 992.4 998.0 1005.7 1010.2 1006.2 992.3 DAY 2 26 31 19 29 28 26 7 6 9 10 19 MEAN QNH PRESSURE IN HPA 1019.3 1018.3 1017.5 1011.8 1007.4 1000.9 998.3 1000.3 1006.2 1013.8 1018.4 1020.3 1011.1 MAX. QNH PRESSURE IN HPA 1023.9 1025.3 1026.9 1015.0 1012.0 1004.3 1002.2 1004.6 1012.4 1018.7 1021.6 1026.2 1026.9 DAY 24 23 9 5 12 9 3 30 30 31 17 31 MIN. QNH PRESSURE IN HPA 1011.8 1007.2 1009.6 1007.7 1002.4 997.5 995.2 995.3 1000.9 1008.6 1013.1 1009.1 995.2 DAY 2 26 31 19 29 28 26 7 6 9 10 19 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 1014.4 1013.5 1012.4 1007.1 1002.7 996.3 993.9 995.6 1001.4 1009.0 1013.6 1016.0 1006.3 MAX. QFE PRESSURE IN HPA 1018.9 1020.4 1021.7 1011.5 1007.4 1000.5 998.1 1000.1 1007.3 1013.4 1016.9 1021.6 1021.7 DAY 24 23 9 5 12 9 2 30 30 31 17 31 MIN. QFE PRESSURE IN HPA 1008.9 1002.9 1004.1 1002.3 997.8 992.5 990.3 991.0 996.3 1004.2 1008.0 1004.0 990.3 DAY 2 1 19 19 29 27 10 7 5 9 10 18 MEAN QNH PRESSURE IN HPA 1017.4 1016.5 1015.3 1010.1 1005.6 999.2 996.7 998.5 1004.3 1011.9 1016.5 1018.9 1009.2 MAX. QNH PRESSURE IN HPA 1021.9 1023.4 1024.7 1014.4 1010.3 1003.4 1001.0 1003.0 1010.2 1016.3 1019.9 1024.6 1024.7 DAY 24 23 9 5 12 9 2 30 30 31 17 31 MIN. QNH PRESSURE IN HPA 1011.8 1005.8 1007.0 1005.2 1000.7 995.4 993.2 993.9 999.2 1007.1 1010.9 1006.9 993.2 DAY 2 1 19 19 29 27 10 7 5 9 10 18 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 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 1014.7 1013.6 1011.7 1006.4 1002.1 995.4 992.9 995.0 1000.9 1008.9 1013.5 1016.2 1005.9 MAX. QFE PRESSURE IN HPA 1019.1 1020.6 1021.7 1010.5 1010.8 999.0 997.5 999.5 1006.5 1013.4 1016.8 1022.0 1022.0 DAY 24 23 4 21 12 9 2 30 30 21 27 29 MIN. QFE PRESSURE IN HPA 1009.7 1004.7 1001.4 1001.3 996.8 991.2 989.6 990.2 995.5 1003.9 1008.7 1001.9 989.6 DAY 2 1 23 23 29 28 9 7 5 9 10 18 MEAN QNH PRESSURE IN HPA 1017.6 1016.6 1014.7 1009.3 1005.0 998.3 995.7 997.9 1003.8 1011.8 1016.5 1019.1 1008.9 MAX. QNH PRESSURE IN HPA 1022.1 1023.6 1024.7 1013.4 1013.7 1001.9 1000.4 1002.4 1009.4 1016.3 1019.8 1025.0 1025.0 DAY 24 23 4 21 12 9 2 30 30 21 27 29 MIN. QNH PRESSURE IN HPA 1012.6 1007.6 1004.3 1004.2 999.7 994.1 992.5 993.1 998.4 1006.8 1011.6 1004.8 992.5 DAY 2 1 23 23 29 28 9 7 5 9 10 18 MEAN QFF PRESSURE IN HPA 1017.9 1016.9 1014.9 1009.5 1005.1 998.4 995.8 997.9 1003.9 1012.0 1016.7 1019.4 1009.0 MAX. QFF PRESSURE IN HPA 1022.4 1024.0 1025.0 1013.6 1013.9 1002.0 1000.4 1002.4 1009.6 1016.5 1020.0 1025.3 1025.3 DAY 24 23 4 21 12 9 2 30 30 21 27 29 MIN. QFF PRESSURE IN HPA 1012.9 1007.8 1004.5 1004.3 999.8 994.1 992.5 993.1 998.5 1007.0 1011.9 1005.0 992.5 DAY 2 1 23 23 29 28 9 7 5 9 10 18 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 14.3 16.1 20.3 26.8 35.1 37.2 40.8 39.6 36.8 31.7 20.0 13.9 27.7 MINIMUN AIR TEMPERATURE (C) 6.0 9.0 12.3 18.4 23.1 23.4 27.6 28.3 23.8 19.4 12.5 7.3 17.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 3 22 27 31 31 27 15 0 0 156 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) -0.5 4.4 7.2 14.0 16.8 19.0 23.6 25.5 19.8 12.0 5.8 2.0 -0.5 DAY 23 3 4 2 17 22 1 12 29 27 16 18 MAXIMUM AIR TEMPERATURE (C) 19.9 20.6 25.0 31.8 40.6 44.1 47.9 46.3 43.9 38.6 24.8 18.3 33.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 3 22 31 30 31 31 30 31 4 0 213 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 24.0 25.2 33.0 36.4 48.0 46.0 51.0 50.6 46.0 43.2 34.0 23.0 51.0 DAY 13 5 31 24 28 12 18 2 5 3 1 28 DIF. BETWEEN (MAX.-MIN.) (C) 13.9 11.6 12.7 13.4 17.5 20.7 20.3 18.0 20.1 19.2 12.3 11.0 15.9 MEAN DAILY TEMP. (MDT) (C) 12.9 14.8 18.7 25.1 31.9 33.7 37.8 37.3 33.9 29.0 18.6 12.8 25.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 11.4 125.0 337.0 381.6 520.5 503.8 386.9 247.5 22.5 0.0 2536.4 HEATING DEG. DAYS(BASE 18 0C) 157.3 89.2 17.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 38.2 156.9 458.6 DEWPOINT (MEAN C) 5.3 8.6 8.4 12.7 7.3 4.5 10.1 16.6 10.9 10.4 10.1 8.0 9.4 MIXING RATIO (G/KG) 5.73 7.10 7.08 9.35 6.69 5.61 8.36 13.12 9.23 8.35 8.12 6.81 7.96 VAPOUR PRESSURE (HPA) 9.28 11.44 11.37 14.92 10.68 8.90 13.18 20.55 14.64 13.36 13.05 11.01 12.70 SATURATION DEF. (HPA) 7.79 7.41 13.33 21.63 48.96 58.18 68.16 54.94 50.89 36.62 11.61 5.48 32.08 RELATIVE HUMIDITY (MEAN %) 58 65 51 46 22 17 20 32 28 31 58 70 42 RELATIVE HUMIDITY (MAX. %) 82 87 77 71 42 38 40 61 57 56 78 89 65 RELATIVE HUMIDITY (MIN. %) 39 47 34 31 12 7 10 17 11 17 41 53 27 RELATIVE HUMIDITY (MEAN% 03UTC) 81 85 76 70 42 38 39 61 57 55 75 87 64 RELATIVE HUMIDITY (MEAN% 09UTC) 47 58 42 38 15 11 14 23 19 24 50 61 34 RELATIVE HUMIDITY (MEAN% 15UTC) 54 57 40 37 15 9 12 20 15 24 55 69 34 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 2.5 77.9 50.0 54.2 4.7 0.0 0.0 0.0 0.0 0.0 91.4 63.4 344.1 DAYS WITH PRECIPITATION >=10 0 3 3 3 0 0 0 0 0 0 4 1 14 DAYS WITH PRECIPITATION >= 5 0 5 3 3 0 0 0 0 0 0 7 1 19 DAYS WITH PRECIPITATION >= 1 2 6 5 4 2 0 0 0 0 0 8 2 29 DAYS WITH PRECIPITATION 3 8 5 6 2 0 0 0 0 0 10 7 41 GREATEST DAILY PRECIPITATION 1.0 29.0 18.0 24.0 3.0 0.0 0.0 0.0 0.0 0.0 19.0 61.0 61.0 DAY 27 19 7 10 4 ** ** ** ** ** 23 20 DAY WITH THUNDER STORM 0 0 0 2 0 0 0 0 0 0 3 0 5 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 4 2 2 4 5 7 7 4 1 4 3 1 44 WIND DIRECTION (PREVAILING) 270 270 135 270 315 270 270 135 270 135 270 270 270 PREVAILING WIND SPEED(KNOTS) 7.3 7.3 10.8 8.3 9.5 12.5 9.7 7.7 8.0 6.7 7.7 7.1 8.8 PREVAILING WIND PERCENT 17.4 23.6 22.6 20.7 21.9 36.7 23.2 19.4 19.3 14.2 18.0 20.6 19.6 CALMS PERCENT OF WIND 60.0 43.6 39.4 42.0 23.2 29.3 27.7 31.0 41.3 45.8 46.0 49.7 39.9 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 268 186 172 247 261 280 240 182 213 229 107 191 236 VECTOR WIND MAGNITUDE(KNOTS) 1.3 1.0 1.4 1.5 1.5 6.7 2.9 2.8 2.0 1.0 1.0 0.7 1.4 WIND STEADINESES (MEAN %) 40.6 19.6 23.7 30.6 20.3 85.9 46.8 52.8 43.5 26.3 18.5 14.6 25.9 WIND SPEED (MEAN KNOTS) 3.2 5.1 5.9 4.9 7.4 7.8 6.2 5.3 4.6 3.8 5.4 4.8 5.4 FASTEST WIND DIRECTION 270 90 130 90 310 270 150 210 280 180 100 110 100 FASTEST WIND SPEED (KNOTS) 19 19 29 19 21 25 23 14 16 16 31 23 31 DAY 20 6 15 2 18 25 29 12 29 1 29 27 DAYS WITH SKY CLEAR (0-2)/8 19 13 15 8 13 28 28 30 30 28 12 20 244 DAYS WITH P.CLOUDY (3-6)/8 8 10 11 13 17 2 3 1 0 3 12 6 86 DAYS WITH CLOUDY (7-8)/8 4 5 5 9 1 0 0 0 0 0 6 5 35 DAYS WITH VISIBILITY =< 2 KM 4 7 2 1 2 3 2 4 2 1 2 7 37 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1017.3 1014.4 1011.0 1008.1 1004.7 997.2 995.5 997.5 1004.4 1010.0 1014.3 1017.9 1007.7 MAX. QFE PRESSURE IN HPA 1024.5 1021.1 1017.8 1014.2 1011.0 1006.8 1000.5 1004.2 1011.7 1016.7 1021.7 1024.1 1024.5 DAY-HOUR 1- 6 22- 6 4- 6 12- 9 6- 6 2- 6 31- 6 30- 6 23- 6 21- 6 15- 6 22- 6 MIN. QFE PRESSURE IN HPA 1008.9 1007.7 1000.8 1003.0 998.8 990.7 989.1 991.7 997.6 1002.9 1004.3 1009.3 989.1 DAY-HOUR 12-12 14-12 15-12 25-15 28-15 24-15 19-15 5-15 4-15 1-15 8-12 20- 3 MEAN QNH PRESSURE IN HPA 1020.3 1017.4 1014.0 1011.0 1007.6 1000.1 998.4 1000.4 1007.3 1012.9 1017.2 1020.8 1010.6 MAX. QNH PRESSURE IN HPA 1027.5 1024.1 1020.8 1017.1 1013.9 1009.7 1003.4 1007.1 1014.6 1019.7 1024.7 1027.1 1027.5 DAY-HOUR 1- 6 22- 6 4- 6 12- 9 6- 6 2- 6 31- 6 30- 6 23- 6 21- 6 15- 6 22- 6 MIN. QNH PRESSURE IN HPA 1011.8 1010.6 1003.7 1005.9 1001.7 993.6 992.0 994.6 1000.5 1005.8 1007.2 1012.2 992.0 DAY-HOUR 12-12 14-12 15-12 25-15 28-15 24-15 19-15 5-15 4-15 1-15 8-12 20- 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 1017.5 1014.4 1010.9 1008.0 1005.1 997.7 996.0 998.0 1004.8 1010.0 1014.4 1017.6 1007.9 MAX. QFE PRESSURE IN HPA 1023.2 1019.4 1016.9 1013.7 1010.1 1005.1 999.8 1003.1 1010.4 1015.1 1020.0 1022.7 1023.2 DAY 1 22 4 5 17 2 4 30 23 21 16 22 MIN. QFE PRESSURE IN HPA 1010.9 1010.6 1004.3 1004.2 999.8 992.3 990.8 992.3 1000.1 1003.0 1006.3 1009.3 990.8 DAY 12 25 15 19 29 25 19 5 6 1 8 20 MEAN QNH PRESSURE IN HPA 1020.4 1017.3 1013.9 1010.9 1008.0 1000.6 998.9 1000.9 1007.7 1013.0 1017.4 1020.6 1010.8 MAX. QNH PRESSURE IN HPA 1026.2 1022.4 1019.9 1016.6 1013.0 1008.0 1002.7 1006.0 1013.3 1018.0 1023.0 1025.7 1026.2 DAY 1 22 4 5 17 2 4 30 23 21 16 22 MIN. QNH PRESSURE IN HPA 1013.8 1013.5 1007.2 1007.1 1002.7 995.2 993.7 995.2 1003.0 1005.9 1009.2 1012.2 993.7 DAY 12 25 15 19 29 25 19 5 6 1 8 20 MEAN QFF PRESSURE IN HPA 1020.8 1017.6 1014.1 1011.1 1008.1 1000.6 998.9 1000.9 1007.8 1013.1 1017.6 1020.9 1011.0 MAX. QFF PRESSURE IN HPA 1026.5 1022.7 1020.1 1016.8 1013.2 1008.1 1002.8 1006.1 1013.4 1018.2 1023.3 1026.0 1026.5 DAY 1 22 4 5 17 2 4 30 23 21 16 22 MIN. QFF PRESSURE IN HPA 1014.1 1013.8 1007.4 1007.3 1002.8 995.3 993.7 995.2 1003.1 1006.0 1009.4 1012.5 993.7 DAY 12 25 15 19 29 25 19 5 6 1 8 20 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1018.9 1015.9 1012.3 1009.2 1005.9 998.6 996.8 998.8 1006.0 1011.5 1015.6 1019.0 1009.1 MAX. QFE PRESSURE IN HPA 1024.5 1021.1 1017.8 1014.2 1011.0 1006.8 1000.5 1004.2 1011.7 1016.7 1021.7 1024.1 1024.5 DAY 1 22 4 15 6 2 31 30 23 21 15 22 MIN. QFE PRESSURE IN HPA 1012.1 1012.2 1004.5 1005.7 1000.3 992.9 992.5 993.5 1000.9 1005.0 1007.1 1009.8 992.5 DAY 12 25 15 2 29 25 19 5 5 1 8 20 MEAN QNH PRESSURE IN HPA 1021.8 1018.9 1015.2 1012.1 1008.9 1001.5 999.7 1001.8 1009.0 1014.5 1018.6 1021.9 1012.0 MAX. QNH PRESSURE IN HPA 1027.5 1024.1 1020.8 1017.1 1013.9 1009.7 1003.4 1007.1 1014.6 1019.7 1024.7 1027.1 1027.5 DAY 1 22 4 15 6 2 31 30 23 21 15 22 MIN. QNH PRESSURE IN HPA 1015.0 1015.1 1007.4 1008.6 1003.2 995.8 995.4 996.4 1003.8 1007.9 1010.0 1012.7 995.4 DAY 12 25 15 2 29 25 19 5 5 1 8 20 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 1017.9 1015.2 1011.8 1008.9 1005.4 997.9 996.2 998.1 1005.3 1010.7 1014.9 1018.3 1008.4 MAX. QFE PRESSURE IN HPA 1023.3 1020.6 1017.4 1014.2 1010.4 1006.2 999.6 1002.9 1010.5 1015.7 1021.0 1023.4 1023.4 DAY 1 22 3 12 6 1 4 29 23 21 15 22 MIN. QFE PRESSURE IN HPA 1010.2 1009.8 1001.9 1004.9 999.6 992.8 991.5 993.0 1000.3 1004.7 1005.9 1011.4 991.5 DAY 12 18 15 2 29 25 19 5 5 1 8 1 MEAN QNH PRESSURE IN HPA 1020.8 1018.2 1014.8 1011.8 1008.4 1000.8 999.1 1001.0 1008.2 1013.6 1017.8 1021.3 1011.3 MAX. QNH PRESSURE IN HPA 1026.3 1023.6 1020.4 1017.1 1013.3 1009.1 1002.5 1005.8 1013.4 1018.7 1024.0 1026.4 1026.4 DAY 1 22 3 12 6 1 4 29 23 21 15 22 MIN. QNH PRESSURE IN HPA 1013.1 1012.7 1004.8 1007.8 1002.5 995.7 994.4 995.9 1003.2 1007.6 1008.8 1014.3 994.4 DAY 12 18 15 2 29 25 19 5 5 1 8 1 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 1016.2 1013.4 1010.2 1007.6 1003.9 996.4 994.6 996.6 1003.2 1008.8 1013.3 1017.0 1006.8 MAX. QFE PRESSURE IN HPA 1021.4 1018.2 1015.8 1014.1 1009.0 1005.0 997.8 1001.1 1008.0 1013.7 1019.8 1022.5 1022.5 DAY 1 21 3 5 6 2 3 29 23 20 15 22 MIN. QFE PRESSURE IN HPA 1008.9 1007.7 1000.8 1003.8 999.3 991.7 989.5 992.1 998.1 1003.5 1004.3 1010.0 989.5 DAY 12 14 15 24 29 24 19 5 5 1 8 1 MEAN QNH PRESSURE IN HPA 1019.1 1016.3 1013.1 1010.5 1006.8 999.3 997.5 999.5 1006.1 1011.8 1016.2 1020.0 1009.7 MAX. QNH PRESSURE IN HPA 1024.4 1021.2 1018.8 1017.0 1011.9 1007.9 1000.7 1004.0 1010.9 1016.6 1022.8 1025.5 1025.5 DAY 1 21 3 5 6 2 3 29 23 20 15 22 MIN. QNH PRESSURE IN HPA 1011.8 1010.6 1003.7 1006.7 1002.2 994.6 992.4 995.0 1001.0 1006.4 1007.2 1012.9 992.4 DAY 12 14 15 24 29 24 19 5 5 1 8 1 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1016.4 1013.4 1010.0 1006.9 1003.4 995.8 994.1 996.2 1002.8 1008.8 1013.3 1017.4 1006.5 MAX. QFE PRESSURE IN HPA 1021.4 1017.9 1015.8 1011.5 1008.8 1004.1 997.3 1000.0 1007.6 1013.6 1019.8 1022.6 1022.6 DAY 1 21 3 15 6 2 30 29 22 20 15 3 MIN. QFE PRESSURE IN HPA 1009.0 1008.8 1000.8 1003.0 998.8 990.7 989.1 991.7 997.6 1002.9 1004.3 1009.6 989.1 DAY 19 14 15 25 28 24 19 5 4 1 8 1 MEAN QNH PRESSURE IN HPA 1019.4 1016.4 1013.0 1009.8 1006.3 998.7 997.0 999.1 1005.7 1011.8 1016.3 1020.4 1009.5 MAX. QNH PRESSURE IN HPA 1024.4 1020.9 1018.8 1014.4 1011.7 1007.0 1000.2 1002.9 1010.5 1016.5 1022.8 1025.6 1025.6 DAY 1 21 3 15 6 2 30 29 22 20 15 3 MIN. QNH PRESSURE IN HPA 1011.9 1011.7 1003.7 1005.9 1001.7 993.6 992.0 994.6 1000.5 1005.8 1007.2 1012.5 992.0 DAY 19 14 15 25 28 24 19 5 4 1 8 1 MEAN QFF PRESSURE IN HPA 1019.7 1016.7 1013.2 1010.0 1006.4 998.7 997.1 999.1 1005.8 1011.9 1016.5 1020.7 1009.6 MAX. QFF PRESSURE IN HPA 1024.7 1021.2 1019.0 1014.6 1011.9 1007.1 1000.2 1003.0 1010.6 1016.7 1023.1 1025.9 1025.9 DAY 1 21 3 15 6 2 30 29 22 20 15 3 MIN. QFF PRESSURE IN HPA 1012.2 1012.0 1003.9 1006.1 1001.8 993.7 992.0 994.7 1000.6 1005.9 1007.4 1012.8 992.0 DAY 19 14 15 25 29 24 19 5 4 1 8 1 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 OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 14.5 18.0 19.6 27.4 36.5 38.4 40.4 39.1 35.9 28.8 22.0 15.7 28.0 MINIMUN AIR TEMPERATURE (C) 6.5 9.3 12.5 16.2 23.6 24.8 26.8 27.1 23.1 19.3 11.8 8.8 17.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 7 27 27 30 29 23 11 1 0 155 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) 2.4 5.4 5.6 9.8 19.0 20.0 23.6 20.0 18.5 12.0 6.0 1.6 1.6 DAY 29 12 22 1 7 6 10 28 26 28 28 30 MAXIMUM AIR TEMPERATURE (C) 20.2 24.0 24.1 33.5 42.7 45.7 47.5 45.9 43.1 34.5 29.0 20.9 34.3 DAYS WITH MAXIMUM TEMP. >=30 0 1 3 21 30 30 31 31 30 25 16 0 218 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 25.0 30.0 30.0 43.6 45.0 50.0 50.0 50.8 46.8 41.4 33.6 26.4 50.8 DAY 26 28 8 30 1 29 19 13 6 3 14 19 DIF. BETWEEN (MAX.-MIN.) (C) 13.7 14.7 11.6 17.3 19.1 20.9 20.7 18.8 20.0 15.2 17.2 12.1 16.8 MEAN DAILY TEMP. (MDT) (C) 13.3 16.7 18.3 24.9 33.2 35.2 37.2 36.5 33.1 26.9 20.4 14.9 25.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.5 7.0 130.5 365.7 427.0 485.0 480.6 352.7 181.2 27.3 0.0 2457.7 HEATING DEG. DAYS(BASE 18 0C) 129.6 40.5 28.3 0.5 0.0 0.0 0.0 0.0 0.0 0.0 9.9 106.5 315.1 DEWPOINT (MEAN C) 6.0 7.2 8.7 4.9 6.7 6.8 10.1 13.0 10.4 10.3 6.2 7.0 8.1 MIXING RATIO (G/KG) 5.91 6.46 7.41 5.67 6.37 6.55 8.23 10.56 8.46 8.30 6.09 6.63 7.22 VAPOUR PRESSURE (HPA) 9.58 10.43 11.88 9.12 10.17 10.40 12.98 16.58 13.44 13.29 9.83 10.72 11.54 SATURATION DEF. (HPA) 7.77 11.15 11.79 30.32 54.05 61.77 67.21 58.17 49.26 28.57 18.44 8.13 33.88 RELATIVE HUMIDITY (MEAN %) 61 54 54 29 19 18 19 26 26 37 40 62 37 RELATIVE HUMIDITY (MAX. %) 83 81 77 56 40 38 37 51 48 56 64 81 59 RELATIVE HUMIDITY (MIN. %) 40 34 36 15 10 8 11 13 13 23 23 44 23 RELATIVE HUMIDITY (MEAN% 03UTC) 82 78 75 54 40 38 37 51 48 52 64 77 58 RELATIVE HUMIDITY (MEAN% 09UTC) 53 45 46 19 13 12 14 20 19 30 30 52 29 RELATIVE HUMIDITY (MEAN% 15UTC) 57 47 47 22 12 11 13 14 17 34 32 65 31 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 5.6 37.5 71.4 1.0 0.0 0.0 1.0 0.0 0.0 29.9 0.0 71.5 217.9 DAYS WITH PRECIPITATION >=10 0 1 1 0 0 0 0 0 0 1 0 3 6 DAYS WITH PRECIPITATION >= 5 1 2 4 0 0 0 0 0 0 1 0 5 13 DAYS WITH PRECIPITATION >= 1 1 5 9 0 0 0 1 0 0 4 0 8 28 DAYS WITH PRECIPITATION 3 6 10 2 0 0 1 0 0 7 0 8 37 GREATEST DAILY PRECIPITATION 5.0 27.0 35.0 0.7 0.0 0.0 1.0 0.0 0.0 20.0 0.0 23.0 35.0 DAY 7 10 4 3 ** ** 30 ** ** 26 ** 24 DAY WITH THUNDER STORM 0 1 1 0 0 0 0 0 0 1 0 1 4 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 3 2 2 2 2 15 8 8 3 2 1 3 51 WIND DIRECTION (PREVAILING) 270 135 270 270 270 270 270 270 270 135 315 315 270 PREVAILING WIND SPEED(KNOTS) 7.1 9.9 8.5 8.4 9.0 11.2 8.7 8.4 7.6 10.7 11.9 11.2 8.7 PREVAILING WIND PERCENT 29.2 21.4 18.7 24.7 23.2 32.7 26.5 22.6 21.3 19.6 23.6 21.4 20.6 CALMS PERCENT OF WIND 36.4 38.6 27.1 26.7 21.9 26.0 28.4 36.8 44.0 44.4 47.3 39.0 34.6 NO. OF WIND OBSERVATION 154 140 155 150 155 150 155 155 150 153 148 154 1819 VECTOR WIND DIRECTION (MEAN) 243 142 156 252 267 267 233 245 231 175 292 214 249 VECTOR WIND MAGNITUDE(KNOTS) 1.0 1.3 1.0 1.7 3.9 4.0 2.2 2.3 2.0 0.6 3.2 0.6 1.6 WIND STEADINESES (MEAN %) 19.2 24.1 13.7 26.2 54.2 54.8 37.9 46.0 46.5 10.9 58.2 8.8 26.7 WIND SPEED (MEAN KNOTS) 5.2 5.4 7.3 6.5 7.2 7.3 5.8 5.0 4.3 5.5 5.5 6.8 6.0 FASTEST WIND DIRECTION 120 150 120 150 300 300 150 90 150 150 170 150 150 FASTEST WIND SPEED (KNOTS) 23 33 29 19 29 23 19 14 17 29 23 39 39 DAY 24 4 16 19 30 4 29 7 19 23 7 20 DAYS WITH SKY CLEAR (0-2)/8 23 18 12 14 19 30 29 28 30 14 25 14 256 DAYS WITH P.CLOUDY (3-6)/8 7 7 11 14 11 0 2 3 0 10 3 12 80 DAYS WITH CLOUDY (7-8)/8 1 3 8 2 1 0 0 0 0 7 2 5 29 DAYS WITH VISIBILITY =< 2 KM 3 3 4 0 1 14 6 5 2 1 0 5 44 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1019.2 1015.3 1011.0 1010.3 1004.5 999.2 996.2 997.0 1003.1 1010.4 1014.5 1017.9 1008.2 MAX. QFE PRESSURE IN HPA 1024.5 1021.0 1016.9 1018.4 1010.3 1005.7 1000.8 1001.8 1010.5 1018.6 1019.9 1023.5 1024.5 DAY-HOUR 28- 6 6- 9 15- 9 22- 6 12- 9 1-12 30- 9 7- 6 30- 6 30- 6 30- 6 2- 6 MIN. QFE PRESSURE IN HPA 1009.7 1007.7 1003.0 1003.2 999.0 993.7 990.7 991.1 997.2 1002.8 1009.1 1009.8 990.7 DAY-HOUR 6-12 28-15 13-12 26-15 29-15 8-15 26-15 13-15 10-15 4- 3 25-12 13-12 MEAN QNH PRESSURE IN HPA 1022.2 1018.3 1013.9 1013.3 1007.4 1002.1 999.1 999.9 1006.0 1013.3 1017.5 1020.8 1011.1 MAX. QNH PRESSURE IN HPA 1027.5 1024.0 1019.9 1021.4 1013.2 1008.6 1003.7 1004.7 1013.4 1021.6 1022.9 1026.5 1027.5 DAY-HOUR 28- 6 6- 9 15- 9 22- 6 12- 9 1-12 30- 9 7- 6 30- 6 30- 6 30- 6 2- 6 MIN. QNH PRESSURE IN HPA 1012.6 1010.6 1005.9 1006.1 1001.9 996.6 993.6 994.0 1000.1 1005.7 1012.0 1012.7 993.6 DAY-HOUR 6-12 28-15 13-12 26-15 29-15 8-15 26-15 13-15 10-15 4- 3 25-12 13-12 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 1019.1 1015.0 1010.6 1010.5 1004.6 999.4 996.1 997.2 1003.1 1010.1 1014.2 1017.6 1008.1 MAX. QFE PRESSURE IN HPA 1022.9 1019.5 1015.0 1017.5 1009.2 1003.5 999.3 1001.3 1008.8 1015.5 1018.0 1022.6 1022.9 DAY 17 1 15 22 13 1 31 8 30 28 30 2 MIN. QFE PRESSURE IN HPA 1013.4 1008.2 1004.8 1004.0 1000.2 995.6 992.3 993.1 998.1 1002.8 1009.7 1010.2 992.3 DAY 6 18 4 19 23 9 27 14 11 4 7 24 MEAN QNH PRESSURE IN HPA 1022.0 1017.9 1013.5 1013.4 1007.6 1002.4 999.0 1000.1 1006.1 1013.0 1017.1 1020.6 1011.1 MAX. QNH PRESSURE IN HPA 1025.9 1022.5 1017.9 1020.5 1012.1 1006.4 1002.2 1004.2 1011.7 1018.4 1021.0 1025.6 1025.9 DAY 17 1 15 22 13 1 31 8 30 28 30 2 MIN. QNH PRESSURE IN HPA 1016.3 1011.1 1007.7 1006.9 1003.1 998.5 995.2 996.0 1001.0 1005.7 1012.6 1013.1 995.2 DAY 6 18 4 19 23 9 27 14 11 4 7 24 MEAN QFF PRESSURE IN HPA 1022.3 1018.2 1013.8 1013.6 1007.6 1002.4 999.1 1000.1 1006.2 1013.1 1017.4 1020.9 1011.2 MAX. QFF PRESSURE IN HPA 1026.2 1022.8 1018.3 1020.7 1012.2 1006.5 1002.2 1004.2 1011.9 1018.7 1021.3 1025.9 1026.2 DAY 17 7 15 22 13 1 31 8 30 28 30 2 MIN. QFF PRESSURE IN HPA 1016.7 1011.4 1008.0 1007.0 1003.2 998.6 995.2 996.0 1001.1 1005.8 1012.8 1013.4 995.2 DAY 6 18 4 19 23 9 27 14 11 4 7 24 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1020.5 1016.5 1011.9 1011.7 1005.8 1000.4 997.4 998.4 1004.4 1011.8 1015.9 1019.3 1009.5 MAX. QFE PRESSURE IN HPA 1024.5 1021.0 1016.7 1018.4 1010.0 1004.7 1000.7 1001.8 1010.5 1018.6 1019.9 1023.5 1024.5 DAY 28 7 15 22 10 1 30 7 30 30 30 2 MIN. QFE PRESSURE IN HPA 1013.1 1009.0 1005.0 1004.0 1001.1 996.4 993.0 994.5 999.4 1005.4 1010.4 1014.7 993.0 DAY 6 17 13 19 30 8 26 14 11 4 7 24 MEAN QNH PRESSURE IN HPA 1023.5 1019.4 1014.8 1014.7 1008.7 1003.3 1000.3 1001.3 1007.3 1014.8 1018.8 1022.3 1012.4 MAX. QNH PRESSURE IN HPA 1027.5 1024.0 1019.7 1021.4 1012.9 1007.6 1003.6 1004.7 1013.4 1021.6 1022.9 1026.5 1027.5 DAY 28 7 15 22 10 1 30 7 30 30 30 2 MIN. QNH PRESSURE IN HPA 1016.0 1011.9 1007.9 1006.9 1004.0 999.3 995.9 997.4 1002.3 1008.3 1013.3 1017.6 995.9 DAY 6 17 13 19 30 8 26 14 11 4 7 24 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1020.1 1016.4 1011.9 1011.2 1005.3 999.9 997.1 997.9 1003.9 1011.2 1015.2 1018.6 1009.1 MAX. QFE PRESSURE IN HPA 1024.4 1021.0 1016.9 1017.3 1010.3 1004.1 1000.8 1001.8 1010.3 1015.7 1019.3 1022.8 1024.4 DAY 17 6 15 7 12 2 30 7 30 27 30 2 MIN. QFE PRESSURE IN HPA 1011.7 1009.3 1005.1 1004.7 1001.1 996.2 993.1 994.0 998.8 1005.1 1010.7 1011.2 993.1 DAY 6 9 13 4 30 8 26 13 10 4 25 13 MEAN QNH PRESSURE IN HPA 1023.0 1019.4 1014.8 1014.1 1008.2 1002.9 1000.0 1000.8 1006.8 1014.1 1018.2 1021.5 1012.0 MAX. QNH PRESSURE IN HPA 1027.4 1024.0 1019.9 1020.3 1013.2 1007.0 1003.7 1004.7 1013.2 1018.7 1022.3 1025.8 1027.4 DAY 17 6 15 7 12 2 30 7 30 27 30 2 MIN. QNH PRESSURE IN HPA 1014.6 1012.2 1008.0 1007.6 1004.0 999.1 996.0 996.9 1001.7 1008.0 1013.6 1014.1 996.0 DAY 6 9 13 4 30 8 26 13 10 4 25 13 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 1018.2 1014.5 1010.3 1009.4 1003.8 998.5 995.6 996.2 1002.1 1009.7 1013.6 1016.9 1007.4 MAX. QFE PRESSURE IN HPA 1022.4 1019.5 1013.9 1015.7 1008.3 1005.7 999.2 1000.3 1008.4 1014.4 1017.6 1021.0 1022.4 DAY 28 11 31 7 12 1 30 7 30 31 30 2 MIN. QFE PRESSURE IN HPA 1009.7 1008.1 1003.0 1003.8 999.5 994.4 991.8 992.0 997.5 1002.8 1009.1 1009.8 991.8 DAY 6 9 13 26 29 8 26 13 11 4 25 13 MEAN QNH PRESSURE IN HPA 1021.2 1017.4 1013.3 1012.4 1006.7 1001.4 998.5 999.1 1005.0 1012.6 1016.5 1019.9 1010.3 MAX. QNH PRESSURE IN HPA 1025.4 1022.5 1016.8 1018.7 1011.2 1008.6 1002.1 1003.2 1011.3 1017.3 1020.6 1024.0 1025.4 DAY 28 11 31 7 12 1 30 7 30 31 30 2 MIN. QNH PRESSURE IN HPA 1012.6 1011.0 1005.9 1006.7 1002.4 997.3 994.7 994.9 1000.4 1005.7 1012.0 1012.7 994.7 DAY 6 9 13 26 29 8 26 13 11 4 25 13 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1018.3 1014.3 1010.2 1008.9 1003.1 997.7 994.8 995.5 1001.8 1009.2 1013.8 1017.1 1007.1 MAX. QFE PRESSURE IN HPA 1022.5 1019.7 1013.6 1015.2 1007.2 1001.7 998.6 1000.6 1008.4 1014.2 1017.6 1021.0 1022.5 DAY 17 11 31 7 11 1 30 7 30 27 30 1 MIN. QFE PRESSURE IN HPA 1010.7 1007.7 1003.5 1003.2 999.0 993.7 990.7 991.1 997.2 1003.0 1009.8 1010.3 990.7 DAY 6 28 13 26 29 8 26 13 10 4 25 23 MEAN QNH PRESSURE IN HPA 1021.3 1017.2 1013.2 1011.8 1006.0 1000.6 997.7 998.4 1004.7 1012.2 1016.7 1020.0 1010.0 MAX. QNH PRESSURE IN HPA 1025.5 1022.7 1016.5 1018.1 1010.1 1004.6 1001.5 1003.5 1011.3 1017.1 1020.6 1024.0 1025.5 DAY 17 11 31 7 11 1 30 7 30 27 30 1 MIN. QNH PRESSURE IN HPA 1013.6 1010.6 1006.4 1006.1 1001.9 996.6 993.6 994.0 1000.1 1005.9 1012.7 1013.2 993.6 DAY 6 28 13 26 29 8 26 13 10 4 25 23 MEAN QFF PRESSURE IN HPA 1021.6 1017.5 1013.4 1012.0 1006.1 1000.7 997.7 998.5 1004.8 1012.3 1016.9 1020.3 1010.2 MAX. QFF PRESSURE IN HPA 1025.8 1023.0 1016.8 1018.4 1010.2 1004.7 1001.5 1003.5 1011.5 1017.4 1020.8 1024.3 1025.8 DAY 17 11 31 7 11 1 30 7 30 28 30 2 MIN. QFF PRESSURE IN HPA 1013.9 1010.9 1006.7 1006.2 1002.0 996.7 993.6 994.0 1000.2 1006.1 1013.0 1013.5 993.6 DAY 6 28 13 26 29 8 26 13 10 4 25 23 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 OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 12.8 16.7 20.6 27.6 34.3 37.9 40.0 39.2 36.0 30.6 20.6 15.9 27.7 MINIMUN AIR TEMPERATURE (C) 7.1 9.7 12.5 17.6 21.6 24.5 27.2 26.6 22.7 19.4 11.9 9.4 17.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 12 22 28 31 31 24 11 0 0 159 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 1 1 TEMPERATURE RECORDS LOWEST(C) 1.0 5.0 5.5 7.0 17.0 20.0 23.5 24.0 19.5 14.5 1.5 0.0 0.0 DAY 1 26 6 6 12 21 1 25 29 7 15 30 MAXIMUM AIR TEMPERATURE (C) 17.2 21.8 25.7 33.4 41.0 44.9 47.1 46.1 43.6 37.8 27.5 20.9 33.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 4 21 31 29 31 30 29 31 10 0 216 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 23.0 26.0 34.0 40.0 47.2 50.0 51.0 50.4 48.0 40.3 37.0 27.0 51.0 DAY 25 29 30 20 31 13 31 1 8 4 4 12 DIF. BETWEEN (MAX.-MIN.) (C) 10.1 12.1 13.2 15.8 19.4 20.4 19.9 19.5 20.9 18.4 15.6 11.5 16.4 MEAN DAILY TEMP. (MDT) (C) 12.2 15.8 19.1 25.5 31.3 34.7 37.2 36.4 33.1 28.6 19.7 15.1 25.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.3 15.1 149.7 319.5 397.2 501.1 461.9 352.0 235.1 54.1 0.0 2486.0 HEATING DEG. DAYS(BASE 18 0C) 181.0 69.9 22.8 0.9 0.0 0.0 0.0 0.0 0.0 0.0 51.3 95.9 421.7 DEWPOINT (MEAN C) 7.9 7.6 8.4 9.5 5.3 4.6 10.5 9.0 5.5 8.0 6.2 6.7 7.4 MIXING RATIO (G/KG) 6.76 6.62 7.12 7.90 5.85 5.63 8.63 7.72 6.21 7.10 6.35 6.37 6.85 VAPOUR PRESSURE (HPA) 10.93 10.66 11.43 12.62 9.35 8.95 13.57 12.19 9.88 11.37 10.23 10.28 10.95 SATURATION DEF. (HPA) 4.38 9.05 14.08 26.66 48.23 61.12 64.19 62.42 53.44 35.12 16.49 8.71 33.66 RELATIVE HUMIDITY (MEAN %) 74 59 51 37 21 16 21 20 19 28 44 58 37 RELATIVE HUMIDITY (MAX. %) 89 82 77 64 45 35 42 39 38 50 67 75 59 RELATIVE HUMIDITY (MIN. %) 58 40 35 22 10 7 10 10 9 15 26 43 24 RELATIVE HUMIDITY (MEAN% 03UTC) 87 82 76 62 45 35 42 39 37 50 64 73 58 RELATIVE HUMIDITY (MEAN% 09UTC) 70 49 41 30 13 11 15 13 13 20 36 49 30 RELATIVE HUMIDITY (MEAN% 15UTC) 72 50 42 27 11 9 12 12 11 22 43 58 31 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 46.5 38.5 37.9 38.6 0.0 0.0 0.0 0.0 0.0 0.0 27.5 21.7 210.7 DAYS WITH PRECIPITATION >=10 2 2 1 2 0 0 0 0 0 0 1 0 8 DAYS WITH PRECIPITATION >= 5 2 2 2 3 0 0 0 0 0 0 2 2 13 DAYS WITH PRECIPITATION >= 1 7 5 6 3 0 0 0 0 0 0 2 5 28 DAYS WITH PRECIPITATION 7 6 7 5 0 0 0 0 0 0 5 9 39 GREATEST DAILY PRECIPITATION 16.0 17.0 22.0 20.0 0.0 0.0 0.0 0.0 0.0 0.0 21.0 7.0 22.0 DAY 13 17 5 26 ** ** ** ** ** ** 11 26 DAY WITH THUNDER STORM 2 2 2 2 0 0 0 0 0 0 2 0 10 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 2 3 6 5 3 4 0 6 0 2 0 31 WIND DIRECTION (PREVAILING) 135 135 315 270 315 315 135 270 315 315 315 315 315 PREVAILING WIND SPEED(KNOTS) 10.0 14.0 13.8 11.0 15.0 15.2 9.0 12.4 14.6 12.3 13.1 10.7 13.4 PREVAILING WIND PERCENT 17.4 20.0 37.9 18.7 48.4 33.3 18.8 25.8 27.3 22.6 25.3 31.0 26.0 CALMS PERCENT OF WIND 38.1 35.2 17.6 26.7 16.8 25.3 27.9 31.6 34.7 45.8 40.7 34.8 31.3 NO. OF WIND OBSERVATION 155 145 153 150 155 150 154 155 150 155 150 155 1827 VECTOR WIND DIRECTION (MEAN) 251 227 301 220 303 289 248 270 290 263 280 313 280 VECTOR WIND MAGNITUDE(KNOTS) 0.7 1.2 3.0 3.4 8.9 8.0 3.8 4.9 5.0 2.3 2.0 1.5 3.4 WIND STEADINESES (MEAN %) 10.9 14.6 26.8 36.2 78.1 77.7 46.9 61.2 61.7 37.7 28.6 20.3 40.0 WIND SPEED (MEAN KNOTS) 6.4 8.2 11.2 9.4 11.4 10.3 8.1 8.0 8.1 6.1 7.0 7.4 8.5 FASTEST WIND DIRECTION 300 120 150 150 300 300 310 290 330 180 360 120 330 FASTEST WIND SPEED (KNOTS) 41 39 39 39 39 35 29 23 49 29 39 29 49 DAY 18 2 3 25 21 4 2 15 9 2 11 17 DAYS WITH SKY CLEAR (0-2)/8 13 13 13 13 26 29 30 31 30 21 17 10 246 DAYS WITH P.CLOUDY (3-6)/8 12 12 11 13 5 1 1 0 0 10 11 10 86 DAYS WITH CLOUDY (7-8)/8 6 4 7 4 0 0 0 0 0 0 2 11 34 DAYS WITH VISIBILITY =< 2 KM 7 2 3 2 0 0 3 0 2 0 1 2 22 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1017.3 1013.8 1010.9 1008.6 1004.5 998.5 993.4 995.9 1001.6 1009.0 1015.4 1016.5 1007.1 MAX. QFE PRESSURE IN HPA 1023.7 1021.3 1017.4 1015.8 1011.3 1004.5 998.7 1003.1 1007.5 1015.0 1022.8 1027.5 1027.5 DAY-HOUR 3- 6 20- 6 6- 6 8- 6 8- 6 3- 6 11- 6 31- 6 14- 6 28- 6 15- 6 29- 6 MIN. QFE PRESSURE IN HPA 1009.4 1005.9 1003.7 999.8 999.5 992.8 988.2 990.4 996.7 1002.5 1010.1 1004.5 988.2 DAY-HOUR 26- 3 2- 3 8-15 25-15 17-15 27-15 14-15 2-15 8-12 1-12 19-12 26- 3 MEAN QNH PRESSURE IN HPA 1020.2 1016.7 1013.8 1011.5 1007.4 1001.4 996.2 998.8 1004.5 1011.9 1018.4 1019.4 1010.0 MAX. QNH PRESSURE IN HPA 1026.7 1024.3 1020.4 1018.8 1014.2 1007.4 1001.6 1006.0 1010.4 1017.9 1025.8 1030.5 1030.5 DAY-HOUR 3- 6 20- 6 6- 6 8- 6 8- 6 3- 6 11- 6 31- 6 14- 6 28- 6 15- 6 29- 6 MIN. QNH PRESSURE IN HPA 1012.3 1008.8 1006.6 1002.7 1002.4 995.7 991.1 993.3 999.6 1005.4 1013.0 1007.4 991.1 DAY-HOUR 26- 3 2- 3 8-15 25-15 17-15 27-15 14-15 2-15 8-12 1-12 19-12 26- 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 1017.0 1013.7 1010.8 1008.4 1004.4 998.9 993.5 995.9 1001.4 1008.7 1015.3 1016.3 1007.0 MAX. QFE PRESSURE IN HPA 1022.5 1020.0 1015.9 1014.4 1010.0 1003.1 997.7 1001.8 1005.8 1013.1 1021.5 1026.5 1026.5 DAY 3 20 15 7 8 3 30 31 15 28 15 29 MIN. QFE PRESSURE IN HPA 1009.4 1005.9 1004.2 1001.6 1001.0 994.3 989.3 993.0 997.6 1002.7 1011.1 1004.5 989.3 DAY 26 2 9 20 18 30 18 1 17 1 11 26 MEAN QNH PRESSURE IN HPA 1019.9 1016.7 1013.7 1011.3 1007.3 1001.8 996.4 998.8 1004.4 1011.6 1018.2 1019.3 1009.9 MAX. QNH PRESSURE IN HPA 1025.5 1023.0 1018.9 1017.3 1012.9 1006.0 1000.6 1004.7 1008.7 1016.0 1024.5 1029.5 1029.5 DAY 3 20 15 7 8 3 30 31 15 28 15 29 MIN. QNH PRESSURE IN HPA 1012.3 1008.8 1007.1 1004.5 1003.9 997.2 992.2 995.9 1000.5 1005.6 1014.0 1007.4 992.2 DAY 26 2 9 20 18 30 18 1 17 1 11 26 MEAN QFF PRESSURE IN HPA 1020.3 1017.0 1014.0 1011.5 1007.5 1001.8 996.5 998.8 1004.5 1011.7 1018.5 1019.6 1010.1 MAX. QFF PRESSURE IN HPA 1025.8 1023.3 1019.1 1017.6 1013.1 1006.1 1000.6 1004.8 1008.8 1016.2 1024.9 1029.9 1029.9 DAY 3 20 15 7 8 3 30 31 15 28 15 29 MIN. QFF PRESSURE IN HPA 1012.6 1009.0 1007.3 1004.6 1004.0 997.3 992.2 995.9 1000.6 1005.8 1014.2 1007.7 992.2 DAY 26 2 9 20 18 30 18 1 17 1 11 26 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1018.4 1015.1 1012.0 1009.7 1005.7 999.7 994.6 997.1 1002.9 1010.4 1016.8 1017.8 1008.3 MAX. QFE PRESSURE IN HPA 1023.7 1021.3 1017.4 1015.8 1011.3 1004.5 998.7 1003.1 1007.5 1015.0 1022.8 1027.5 1027.5 DAY 3 20 6 8 8 3 11 31 14 28 15 29 MIN. QFE PRESSURE IN HPA 1011.4 1007.8 1006.5 1002.5 1001.6 995.4 990.8 993.3 998.9 1004.2 1012.5 1005.3 990.8 DAY 26 2 9 25 27 28 14 24 9 1 11 26 MEAN QNH PRESSURE IN HPA 1021.3 1018.0 1015.0 1012.7 1008.6 1002.6 997.5 1000.0 1005.8 1013.3 1019.8 1020.8 1011.3 MAX. QNH PRESSURE IN HPA 1026.7 1024.3 1020.4 1018.8 1014.2 1007.4 1001.6 1006.0 1010.4 1017.9 1025.8 1030.5 1030.5 DAY 3 20 6 8 8 3 11 31 14 28 15 29 MIN. QNH PRESSURE IN HPA 1014.3 1010.7 1009.4 1005.4 1004.5 998.3 993.7 996.2 1001.8 1007.1 1015.4 1008.2 993.7 DAY 26 2 9 25 27 28 14 24 9 1 11 26 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 1018.1 1014.7 1011.9 1009.6 1005.3 999.2 994.2 996.7 1002.4 1009.8 1016.3 1017.2 1008.0 MAX. QFE PRESSURE IN HPA 1023.7 1021.2 1017.3 1015.4 1010.5 1004.0 998.0 1003.0 1006.8 1014.2 1021.7 1027.1 1027.1 DAY 20 4 15 7 8 3 11 31 14 28 15 29 MIN. QFE PRESSURE IN HPA 1012.3 1008.6 1007.1 1002.5 1001.1 995.0 990.4 993.0 998.3 1003.6 1012.0 1006.0 990.4 DAY 26 17 9 25 18 28 14 2 17 1 19 26 MEAN QNH PRESSURE IN HPA 1021.1 1017.7 1014.8 1012.5 1008.2 1002.1 997.1 999.6 1005.4 1012.7 1019.2 1020.2 1010.9 MAX. QNH PRESSURE IN HPA 1026.7 1024.2 1020.3 1018.3 1013.4 1006.9 1000.9 1005.9 1009.7 1017.1 1024.7 1030.1 1030.1 DAY 20 4 15 7 8 3 11 31 14 28 15 29 MIN. QNH PRESSURE IN HPA 1015.2 1011.5 1010.0 1005.4 1004.0 997.9 993.3 995.9 1001.2 1006.5 1014.9 1008.9 993.3 DAY 26 17 9 25 18 28 14 2 17 1 19 26 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 1016.5 1012.7 1010.0 1007.9 1003.9 997.8 992.7 995.2 1000.8 1008.1 1014.5 1015.5 1006.3 MAX. QFE PRESSURE IN HPA 1021.7 1019.4 1015.0 1014.3 1008.7 1002.3 996.5 1002.0 1005.2 1012.6 1020.0 1025.3 1025.3 DAY 3 4 16 7 8 3 11 31 14 28 14 29 MIN. QFE PRESSURE IN HPA 1010.7 1006.1 1005.3 1001.2 1000.0 993.6 989.0 991.2 996.7 1002.5 1010.1 1006.0 989.0 DAY 25 23 20 25 27 27 14 2 8 1 19 26 MEAN QNH PRESSURE IN HPA 1019.5 1015.7 1012.9 1010.8 1006.8 1000.7 995.6 998.1 1003.7 1011.0 1017.4 1018.4 1009.2 MAX. QNH PRESSURE IN HPA 1024.7 1022.4 1017.9 1017.2 1011.6 1005.2 999.4 1004.9 1008.1 1015.5 1023.0 1028.3 1028.3 DAY 3 4 16 7 8 3 11 31 14 28 14 29 MIN. QNH PRESSURE IN HPA 1013.6 1009.0 1008.2 1004.1 1002.9 996.5 991.9 994.1 999.6 1005.4 1013.0 1008.9 991.9 DAY 25 23 20 25 27 27 14 2 8 1 19 26 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1016.5 1012.8 1009.9 1007.3 1003.3 997.1 991.8 994.5 1000.3 1008.1 1014.4 1015.7 1006.0 MAX. QFE PRESSURE IN HPA 1021.7 1019.4 1014.9 1012.8 1008.4 1001.9 995.5 1001.5 1004.5 1012.6 1020.7 1025.4 1025.4 DAY 2 4 15 7 3 3 11 31 14 28 14 29 MIN. QFE PRESSURE IN HPA 1010.4 1006.8 1003.7 999.8 999.5 992.8 988.2 990.4 996.8 1002.8 1010.6 1006.9 988.2 DAY 25 2 8 25 17 27 14 2 2 1 10 25 MEAN QNH PRESSURE IN HPA 1019.5 1015.7 1012.8 1010.2 1006.2 1000.0 994.7 997.4 1003.2 1011.0 1017.3 1018.6 1008.9 MAX. QNH PRESSURE IN HPA 1024.7 1022.4 1017.8 1015.7 1011.3 1004.8 998.4 1004.4 1007.4 1015.5 1023.7 1028.4 1028.4 DAY 2 4 15 7 3 3 11 31 14 28 14 29 MIN. QNH PRESSURE IN HPA 1013.3 1009.7 1006.6 1002.7 1002.4 995.7 991.1 993.3 999.7 1005.7 1013.5 1009.8 991.1 DAY 25 2 8 25 17 27 14 2 2 1 10 25 MEAN QFF PRESSURE IN HPA 1019.8 1016.0 1013.1 1010.4 1006.3 1000.1 994.7 997.5 1003.3 1011.1 1017.6 1018.9 1009.1 MAX. QFF PRESSURE IN HPA 1025.0 1022.7 1018.1 1016.0 1011.4 1004.9 998.5 1004.5 1007.5 1015.7 1024.0 1028.8 1028.8 DAY 2 4 15 7 3 3 11 31 14 28 14 29 MIN. QFF PRESSURE IN HPA 1013.6 1009.9 1006.8 1002.9 1002.5 995.8 991.1 993.3 999.8 1005.9 1013.7 1010.1 991.1 DAY 25 2 8 25 17 30 14 2 2 1 10 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 OMIDIYEH(AGHAJARI)(40833) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 40 E DATA PROCESSING CENTER ELEVATION 27.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 11.3 14.6 21.4 28.1 34.2 38.0 41.2 39.5 34.7 29.5 21.0 13.8 27.3 MINIMUN AIR TEMPERATURE (C) 4.5 6.6 13.3 18.2 22.3 23.9 28.3 26.5 22.4 18.2 13.6 8.4 17.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 7 25 27 30 30 22 2 0 0 143 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 0 2 TEMPERATURE RECORDS LOWEST(C) -1.0 1.0 6.0 8.5 18.0 20.0 24.0 20.0 18.0 11.5 7.0 4.0 -1.0 DAY 6 5 31 1 15 2 7 13 20 23 23 8 MAXIMUM AIR TEMPERATURE (C) 16.4 20.4 26.8 33.9 40.5 45.9 48.5 46.6 41.7 36.6 26.0 17.8 33.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 9 24 31 30 31 31 30 31 4 0 221 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 22.0 26.5 33.5 39.0 47.6 50.0 51.0 48.4 46.0 43.4 31.0 27.0 51.0 DAY 10 28 7 17 25 28 20 30 1 6 2 1 DIF. BETWEEN (MAX.-MIN.) (C) 11.9 13.8 13.5 15.7 18.2 22.0 20.2 20.1 19.3 18.4 12.4 9.4 16.2 MEAN DAILY TEMP. (MDT) (C) 10.5 13.5 20.0 26.1 31.4 34.9 38.4 36.6 32.0 27.4 19.8 13.1 25.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 20.9 159.5 323.7 417.2 521.0 482.7 331.5 198.3 16.5 0.0 2471.4 HEATING DEG. DAYS(BASE 18 0C) 233.9 126.4 12.3 1.8 0.0 0.0 0.0 0.0 0.0 0.0 13.3 160.2 547.9 DEWPOINT (MEAN C) 3.3 2.9 7.5 8.9 5.2 6.2 12.5 11.4 12.2 10.0 10.7 9.6 8.4 MIXING RATIO (G/KG) 4.86 4.95 6.68 7.43 5.83 6.19 9.91 9.14 9.62 8.05 8.35 7.59 7.38 VAPOUR PRESSURE (HPA) 7.88 8.02 10.73 11.90 9.33 9.84 15.56 14.41 15.23 12.89 13.42 12.25 11.79 SATURATION DEF. (HPA) 6.21 9.61 15.99 28.45 48.25 61.50 67.89 61.38 43.47 31.26 12.55 4.18 32.56 RELATIVE HUMIDITY (MEAN %) 61 50 45 35 21 18 22 23 29 34 56 77 39 RELATIVE HUMIDITY (MAX. %) 82 75 70 62 42 39 42 45 52 57 77 89 61 RELATIVE HUMIDITY (MIN. %) 44 32 30 20 10 7 12 11 17 20 40 65 26 RELATIVE HUMIDITY (MEAN% 03UTC) 80 74 68 61 41 39 40 45 52 57 75 88 60 RELATIVE HUMIDITY (MEAN% 09UTC) 53 42 37 27 13 12 16 17 22 27 46 73 32 RELATIVE HUMIDITY (MEAN% 15UTC) 55 39 39 25 13 8 13 13 22 28 51 75 32 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 11.2 14.2 36.0 11.0 0.5 0.0 0.0 0.0 0.0 3.0 48.6 108.9 233.4 DAYS WITH PRECIPITATION >=10 0 0 1 0 0 0 0 0 0 0 3 2 6 DAYS WITH PRECIPITATION >= 5 1 1 3 1 0 0 0 0 0 0 4 5 15 DAYS WITH PRECIPITATION >= 1 3 4 6 3 0 0 0 0 0 1 6 6 29 DAYS WITH PRECIPITATION 6 6 6 3 1 0 0 0 0 1 10 8 41 GREATEST DAILY PRECIPITATION 8.0 8.0 15.0 8.0 0.5 0.0 0.0 0.0 0.0 3.0 15.0 69.0 69.0 DAY 3 23 29 29 8