STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) ***** ***** ***** ***** 18.8 22.9 27.7 25.1 22.7 15.3 9.7 1.7 ***** MINIMUN AIR TEMPERATURE (C) ***** ***** ***** ***** 11.2 16.3 20.7 20.3 17.2 11.0 7.3 -1.2 ***** DAYS WITH MINIMUM TEMP. >=21 **** **** **** **** 0 3 17 13 0 0 0 0 **** DAYS WITH MINIMUM TEMP. <=-4 **** **** **** **** 0 0 0 0 0 0 0 5 **** DAYS WITH FREEZING MIN.<= 0 **** **** **** **** 0 0 0 0 0 0 0 26 **** TEMPERATURE RECORDS LOWEST(C) ***** ***** ***** ***** 5.0 9.0 15.5 15.5 14.5 4.0 0.5 -5.0 ***** DAY ** ** ** ** 7 16 9 31 22 21 30 6 MAXIMUM AIR TEMPERATURE (C) ***** ***** ***** ***** 23.2 29.7 35.0 30.5 28.8 20.6 12.9 5.5 ***** DAYS WITH MAXIMUM TEMP. >=30 **** **** **** **** 1 17 30 22 8 0 0 0 **** DAYS WITH MAXIMUM TEMP. <= 0 **** **** **** **** 0 0 0 0 0 0 0 0 **** TEMPERATURE RECORDS HIGHEST(C)***** ***** ***** ***** 31.0 36.0 39.5 34.0 32.0 27.0 18.5 15.0 ***** DAY ** ** ** ** 26 10 21 1 13 1 25 13 DIF. BETWEEN (MAX.-MIN.) (C) ***** ***** ***** ***** 12.0 13.4 14.3 10.2 11.6 9.6 5.6 6.7 ***** MEAN DAILY TEMP. (MDT) (C) ***** ***** ***** ***** 17.2 23.0 27.8 25.4 23.0 15.8 10.1 2.1 ***** COOLING DEG. DAYS(BASE 21 0C)****** ****** ****** ****** 4.3 67.3 212.2 140.0 56.0 0.3 0.0 0.0 ****** HEATING DEG. DAYS(BASE 18 0C)****** ****** ****** ****** 60.8 1.0 0.0 0.0 0.0 87.8 236.5 491.4 ****** DEWPOINT (MEAN C) ***** ***** ***** ***** 12.0 15.0 18.2 17.3 17.1 11.4 7.5 -1.0 ***** MIXING RATIO (G/KG) ****** ****** ****** ****** 8.93 10.93 13.40 12.75 12.35 8.61 6.57 3.58 ****** VAPOUR PRESSURE (HPA) ****** ****** ****** ****** 14.20 17.30 21.07 20.07 19.59 13.81 10.58 5.84 ****** SATURATION DEF. (HPA) ****** ****** ****** ****** 8.68 11.82 17.19 12.62 8.65 4.41 1.75 1.20 ****** RELATIVE HUMIDITY (MEAN %) *** *** *** *** 68 64 59 64 73 79 87 85 *** RELATIVE HUMIDITY (MAX. %) *** *** *** *** 91 88 81 84 90 94 96 96 *** RELATIVE HUMIDITY (MIN. %) *** *** *** *** 52 43 39 48 52 60 73 66 *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** *** *** 89 82 78 75 88 89 93 91 *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** *** *** 59 50 46 53 60 69 79 75 *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** *** *** 57 49 43 53 59 74 87 86 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. ****** ****** ****** ****** 123.2 0.9 0.0 16.0 2.1 36.5 40.8 22.7 ****** DAYS WITH PRECIPITATION >=10 **** **** **** **** 4 0 0 1 0 1 0 0 **** DAYS WITH PRECIPITATION >= 5 **** **** **** **** 4 0 0 1 0 2 3 2 **** DAYS WITH PRECIPITATION >= 1 **** **** **** **** 6 0 0 2 1 5 10 6 **** DAYS WITH PRECIPITATION **** **** **** **** 8 3 2 5 2 9 14 9 **** GREATEST DAILY PRECIPITATION ****** ****** ****** ****** 47.0 0.9 0.0 11.0 1.4 19.0 9.0 8.1 ****** DAY ** ** ** ** 6 7 ** 11 8 18 13 25 DAY WITH THUNDER STORM **** **** **** **** 3 2 1 2 0 0 0 0 **** DAYS WITH SNOW OR SLEET **** **** **** **** 0 0 0 0 0 0 1 6 **** DAYS WITH DUST **** **** **** **** 0 1 0 0 0 0 0 0 **** WIND DIRECTION (PREVAILING) *** *** *** *** 270 135 135 135 135 135 135 135 *** PREVAILING WIND SPEED(KNOTS) **** **** **** **** 7.7 9.3 8.5 10.8 6.3 8.2 7.4 5.7 **** PREVAILING WIND PERCENT ***** ***** ***** ***** 11.0 19.2 30.9 24.3 36.3 17.7 12.9 9.3 ***** CALMS PERCENT OF WIND ***** ***** ***** ***** 54.7 60.0 40.7 47.4 49.2 54.0 70.0 69.4 ***** NO. OF WIND OBSERVATION **** **** **** **** 172 240 246 247 240 248 240 248 1881 VECTOR WIND DIRECTION (MEAN) *** *** *** *** 184 147 146 150 147 168 166 191 *** VECTOR WIND MAGNITUDE(KNOTS) **** **** **** **** 0.6 2.7 3.9 3.6 2.9 2.1 1.6 1.1 **** WIND STEADINESES (MEAN %) ***** ***** ***** ***** 18.8 73.0 78.0 78.3 87.9 70.0 80.0 64.7 ***** WIND SPEED (MEAN KNOTS) **** **** **** **** 3.2 3.7 5.0 4.6 3.3 3.0 2.0 1.7 **** FASTEST WIND DIRECTION *** *** *** *** 160 170 160 150 160 160 150 250 *** FASTEST WIND SPEED (KNOTS) *** *** *** *** 16 23 25 29 21 19 21 14 *** DAY ** ** ** ** 27 15 3 29 4 7 30 12 DAYS WITH SKY CLEAR (0-2)/8 **** **** **** **** 12 17 23 17 18 14 4 9 **** DAYS WITH P.CLOUDY (3-6)/8 **** **** **** **** 8 10 8 6 10 9 9 8 **** DAYS WITH CLOUDY (7-8)/8 **** **** **** **** 11 3 0 8 2 8 17 14 **** DAYS WITH VISIBILITY =< 2 KM **** **** **** **** 5 1 2 0 4 6 15 14 **** DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** 225.5 ****** 34.2 ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. 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QNH PRESSURE IN HPA ****** ****** ****** ****** 999.9 999.5 999.8 999.4 1005.4 1000.4 1004.0 1006.0 ****** DAY ** ** ** ** 28 10 30 15 8 17 12 14 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1009.5 1007.8 1004.0 1004.7 1010.9 1016.0 1016.0 1024.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1016.7 1015.7 1011.0 1012.4 1016.2 1025.2 1028.7 1034.1 ****** DAY ** ** ** ** 12 16 3 31 30 8 30 19 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 1000.1 999.6 999.9 999.5 1005.6 1000.6 1004.3 1006.4 ****** DAY ** ** ** ** 28 10 30 15 8 17 12 14 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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. 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QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 996.9 997.6 996.5 1005.1 1000.7 1002.0 1004.5 ****** DAY ** ** ** ** ** 10 30 14 8 16 12 13 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 ****** ****** ****** ****** 1004.4 1001.6 997.6 999.2 1005.2 1011.0 1011.8 1019.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 1012.7 1011.8 1006.7 1009.7 1010.8 1020.8 1029.7 1030.2 ****** DAY ** ** ** ** 12 12 3 30 4 21 30 18 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 990.7 992.8 993.3 992.2 1001.2 996.4 999.4 1001.0 ****** DAY ** ** ** ** 27 20 30 14 7 16 12 13 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1007.9 1005.1 1001.1 1002.6 1008.7 1014.5 1015.3 1023.5 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1016.2 1015.3 1010.2 1013.2 1014.3 1024.4 1033.3 1033.8 ****** DAY ** ** ** ** 12 12 3 30 4 21 30 18 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 994.2 996.3 996.8 995.7 1004.7 999.9 1002.9 1004.5 ****** DAY ** ** ** ** 27 20 30 14 7 16 12 13 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1008.1 1005.3 1001.2 1002.5 1008.8 1014.8 1015.7 1024.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1016.5 1015.5 1010.4 1013.4 1014.5 1024.7 1033.8 1034.3 ****** DAY ** ** ** ** 12 12 3 30 4 21 30 18 MIN. 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QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 997.2 998.0 996.7 1005.5 1000.3 1004.5 1004.7 ****** DAY ** ** ** ** ** 20 30 14 7 16 12 13 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1006.7 1002.6 1004.4 1010.4 1015.9 1016.4 1024.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1016.1 1010.9 1014.2 1015.8 1025.2 1035.1 1034.9 ****** DAY ** ** ** ** ** 15 3 30 4 21 30 18 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 997.3 998.0 996.8 1005.6 1000.6 1004.8 1005.2 ****** DAY ** ** ** ** ** 20 30 14 7 16 12 13 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 1003.5 999.4 1001.0 1006.9 1012.2 1012.5 1020.2 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 1013.4 1006.0 1010.0 1011.9 1021.1 1030.4 1031.0 ****** DAY ** ** ** ** ** 15 3 30 30 21 30 18 MIN. 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QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 999.5 998.4 996.4 1005.7 1000.5 1004.3 1005.8 ****** DAY ** ** ** ** ** 20 30 14 7 16 28 13 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.2 2.7 4.3 13.6 20.0 25.2 25.4 25.4 22.1 14.2 10.1 3.5 14.1 MINIMUN AIR TEMPERATURE (C) -1.4 -1.8 -0.0 8.4 12.8 18.8 20.3 18.1 16.8 9.8 6.1 0.0 9.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 5 16 5 2 0 0 0 28 DAYS WITH MINIMUM TEMP. <=-4 9 9 9 0 0 0 0 0 0 0 0 3 30 DAYS WITH FREEZING MIN.<= 0 21 18 16 0 0 0 0 0 0 0 0 15 70 TEMPERATURE RECORDS LOWEST(C) -10.0 -10.0 -8.5 4.0 5.0 15.0 15.0 14.4 11.0 4.0 2.0 -5.2 -10.0 DAY 18 19 3 17 4 10 24 13 22 23 1 4 MAXIMUM AIR TEMPERATURE (C) 6.7 7.0 9.0 19.4 27.8 32.2 31.1 33.2 28.2 19.5 15.0 7.6 19.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 10 27 24 29 13 0 0 0 103 DAYS WITH MAXIMUM TEMP. <= 0 1 2 1 0 0 0 0 0 0 0 0 0 4 TEMPERATURE RECORDS HIGHEST(C) 17.6 22.5 19.0 26.2 34.6 35.5 34.8 36.5 34.2 27.5 24.5 14.6 36.5 DAY 21 13 18 11 30 19 6 6 3 17 9 8 DIF. BETWEEN (MAX.-MIN.) (C) 8.1 8.8 9.0 11.0 15.0 13.4 10.8 15.1 11.4 9.7 8.9 7.6 10.7 MEAN DAILY TEMP. (MDT) (C) 2.7 2.6 4.5 13.9 20.3 25.5 25.7 25.6 22.5 14.7 10.6 3.8 14.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 34.9 135.0 145.7 143.4 56.8 0.0 0.0 0.0 515.9 HEATING DEG. DAYS(BASE 18 0C) 474.5 430.6 418.0 123.4 15.1 0.0 0.0 0.0 1.3 107.2 223.1 439.4 2232.6 DEWPOINT (MEAN C) 0.1 -1.4 1.9 9.9 13.9 17.8 18.4 18.4 16.3 10.5 7.3 1.5 9.5 MIXING RATIO (G/KG) 3.91 3.61 4.58 7.79 10.17 13.04 13.50 13.57 12.03 8.10 6.43 4.29 8.42 VAPOUR PRESSURE (HPA) 6.32 5.78 7.39 12.41 16.14 20.53 21.27 21.41 19.04 12.99 10.35 6.92 13.38 SATURATION DEF. (HPA) 1.13 2.20 1.51 3.79 8.73 12.50 11.93 12.36 8.58 3.76 2.41 1.08 5.83 RELATIVE HUMIDITY (MEAN %) 87 78 86 80 71 66 67 68 72 80 84 88 77 RELATIVE HUMIDITY (MAX. %) 97 93 98 95 94 89 84 89 90 93 95 96 93 RELATIVE HUMIDITY (MIN. %) 72 58 66 60 45 45 51 46 52 63 70 74 59 RELATIVE HUMIDITY (MEAN% 03UTC) 91 85 95 92 90 81 79 84 85 88 91 93 88 RELATIVE HUMIDITY (MEAN% 09UTC) 77 66 76 68 54 51 57 55 60 69 75 78 66 RELATIVE HUMIDITY (MEAN% 15UTC) 85 72 77 72 55 50 56 50 62 77 84 90 69 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 28.9 37.4 32.6 23.7 28.0 11.0 3.0 0.5 1.6 18.4 4.9 23.0 213.0 DAYS WITH PRECIPITATION >=10 1 1 1 1 1 0 0 0 0 0 0 2 7 DAYS WITH PRECIPITATION >= 5 1 2 2 2 3 1 0 0 0 2 0 2 15 DAYS WITH PRECIPITATION >= 1 4 9 7 5 5 2 1 0 1 4 1 3 42 DAYS WITH PRECIPITATION 10 13 12 14 5 2 3 1 2 9 9 5 85 GREATEST DAILY PRECIPITATION 21.0 13.8 10.0 15.0 13.0 8.0 3.0 0.5 1.5 5.0 2.5 11.0 21.0 DAY 15 2 22 4 19 8 28 16 28 20 20 3 DAY WITH THUNDER STORM 1 0 0 2 5 3 2 2 0 0 0 0 15 DAYS WITH SNOW OR SLEET 4 10 4 0 0 0 0 0 0 0 0 1 19 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 135 *** *** *** *** *** *** *** 135 135 135 270 *** PREVAILING WIND SPEED(KNOTS) 8.4 **** **** **** **** **** **** **** 8.7 8.4 8.6 5.3 **** PREVAILING WIND PERCENT 14.0 ***** ***** ***** ***** ***** ***** ***** 34.1 28.6 26.3 26.6 ***** CALMS PERCENT OF WIND 65.2 ***** ***** ***** ***** ***** ***** ***** 31.5 34.7 36.7 44.0 ***** NO. OF WIND OBSERVATION 221 0 0 0 0 0 0 0 232 248 240 248 1189 VECTOR WIND DIRECTION (MEAN) 174 *** *** *** *** *** *** *** 131 149 166 234 *** VECTOR WIND MAGNITUDE(KNOTS) 1.7 **** **** **** **** **** **** **** 2.6 1.9 1.8 1.6 **** WIND STEADINESES (MEAN %) 70.8 ***** ***** ***** ***** ***** ***** ***** 53.1 44.2 46.2 48.5 ***** WIND SPEED (MEAN KNOTS) 2.4 **** **** **** **** **** **** **** 4.9 4.3 3.9 3.3 **** FASTEST WIND DIRECTION 160 *** *** *** *** *** *** *** 120 120 150 140 *** FASTEST WIND SPEED (KNOTS) 19 *** *** *** *** *** *** *** 19 19 19 17 *** DAY 12 ** ** ** ** ** ** ** 27 10 10 13 DAYS WITH SKY CLEAR (0-2)/8 6 8 10 9 19 22 11 23 21 13 10 9 161 DAYS WITH P.CLOUDY (3-6)/8 15 9 9 14 10 8 17 7 4 8 7 10 118 DAYS WITH CLOUDY (7-8)/8 10 11 12 7 2 0 3 1 5 10 13 12 86 DAYS WITH VISIBILITY =< 2 KM 20 10 12 9 5 0 1 2 0 5 9 11 84 DURATION OF SUNSHINE HOURS 90.2 99.9 106.9 170.2 277.4 320.3 221.0 306.9 222.7 165.5 108.2 96.7 2185.9 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1011.5 1003.7 1014.9 1004.0 1004.0 1000.2 1001.8 1003.5 1005.2 1011.3 1012.4 1012.3 1007.1 MAX. QFE PRESSURE IN HPA 1024.4 1020.6 1033.1 1025.0 1014.6 1008.4 1008.6 1011.1 1018.4 1022.9 1026.7 1027.1 1033.1 DAY-HOUR 14- 6 28- 6 10- 6 16-18 12- 6 9- 6 16- 6 25- 6 17- 6 2- 9 19- 6 14- 6 MIN. QFE PRESSURE IN HPA 998.0 991.0 994.1 993.2 997.2 987.8 993.0 995.5 995.7 998.0 1003.1 989.6 987.8 DAY-HOUR 21-12 5-12 24- 3 14-15 16-15 20-15 19-15 5-15 1-15 20- 9 26-12 19- 0 MEAN QNH PRESSURE IN HPA 1015.0 1007.2 1018.5 1007.5 1007.5 1003.7 1005.3 1007.0 1008.8 1014.8 1016.0 1015.9 1010.6 MAX. QNH PRESSURE IN HPA 1028.0 1024.2 1036.7 1028.6 1018.1 1011.9 1012.1 1014.6 1022.0 1026.5 1030.3 1030.7 1036.7 DAY-HOUR 14- 6 28- 6 10- 6 16-18 12- 6 9- 6 16- 6 25- 6 17- 6 2- 9 19- 6 14- 6 MIN. QNH PRESSURE IN HPA 1001.5 994.5 997.6 996.7 1000.7 991.3 996.5 999.0 999.2 1001.5 1006.6 993.1 991.3 DAY-HOUR 21-12 5-12 24- 3 14-15 16-15 20-15 19-15 5-15 1-15 20- 9 26-12 19- 0 MEAN QFF PRESSURE IN HPA 1015.2 1007.1 1018.9 1007.7 1007.7 1003.8 1005.5 1007.1 1008.9 1015.1 1016.3 1016.3 1010.8 MAX. QFF PRESSURE IN HPA 1028.4 1024.7 1037.2 1029.0 1018.4 1012.1 1012.3 1014.8 1022.2 1026.8 1030.7 1031.2 1037.2 DAY-HOUR 14- 6 28- 6 10- 6 16-18 12- 6 9- 6 17- 6 25- 6 17- 6 2- 9 19- 6 14- 6 MIN. QFF PRESSURE IN HPA 1001.8 994.9 998.0 997.0 1000.8 991.3 996.6 999.1 999.3 1001.8 1007.0 993.4 991.3 DAY-HOUR 21-12 5-12 24- 3 14-15 16-15 20-15 19-15 5-15 1-15 20- 9 26-12 19- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1012.0 1002.5 1014.8 1004.2 1004.0 1000.4 1001.8 1003.7 1005.3 1010.9 1012.6 1012.3 1007.0 MAX. QFE PRESSURE IN HPA 1022.4 1018.1 1032.0 1024.0 1013.1 1006.9 1007.2 1010.6 1018.0 1020.3 1024.9 1026.6 1032.0 DAY 14 28 10 17 12 10 16 25 17 31 19 14 MIN. QFE PRESSURE IN HPA 1001.7 994.1 995.4 996.1 998.0 990.3 994.8 997.2 997.2 998.7 1004.6 989.6 989.6 DAY 21 5 24 24 1 20 20 5 7 18 9 19 MEAN QNH PRESSURE IN HPA 1015.5 1006.0 1018.3 1007.7 1007.5 1003.9 1005.3 1007.2 1008.8 1014.4 1016.1 1015.8 1010.6 MAX. QNH PRESSURE IN HPA 1026.0 1021.7 1035.6 1027.6 1016.6 1010.4 1010.7 1014.1 1021.6 1023.9 1028.5 1030.2 1035.6 DAY 14 28 10 17 12 10 16 25 17 31 19 14 MIN. QNH PRESSURE IN HPA 1005.2 997.6 998.9 999.6 1001.5 993.8 998.3 1000.7 1000.7 1002.2 1008.1 993.1 993.1 DAY 21 5 24 24 1 20 20 5 7 18 9 19 MEAN QFF PRESSURE IN HPA 1015.6 1006.4 1018.7 1008.0 1007.4 1004.1 1005.5 1007.3 1008.9 1014.7 1016.4 1016.2 1010.8 MAX. QFF PRESSURE IN HPA 1026.4 1022.2 1036.1 1028.0 1016.3 1010.6 1010.8 1014.3 1021.7 1024.2 1028.9 1030.6 1036.1 DAY 14 28 10 17 13 10 29 25 17 31 19 14 MIN. QFF PRESSURE IN HPA 1005.6 998.0 999.3 999.8 1001.7 993.8 998.4 1000.8 1000.8 1002.4 1008.4 993.4 993.4 DAY 21 5 24 24 1 20 20 5 7 18 9 19 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1011.4 1003.9 1015.0 1004.6 1004.5 1001.4 1002.6 1004.4 1005.9 1011.4 1012.6 1012.3 1007.5 MAX. QFE PRESSURE IN HPA 1022.8 1019.0 1032.4 1023.3 1013.8 1007.6 1008.0 1010.8 1018.0 1021.5 1025.1 1026.6 1032.4 DAY 14 28 10 17 12 10 16 25 17 31 19 14 MIN. QFE PRESSURE IN HPA 1000.0 993.0 994.1 995.9 997.7 991.5 995.6 997.8 998.4 998.7 1005.0 990.1 990.1 DAY 21 5 24 24 1 20 20 5 14 18 9 19 MEAN QNH PRESSURE IN HPA 1014.9 1007.4 1018.6 1008.1 1008.0 1004.9 1006.1 1007.9 1009.4 1014.9 1016.1 1015.8 1011.0 MAX. QNH PRESSURE IN HPA 1026.4 1022.6 1036.0 1026.9 1017.3 1011.1 1011.5 1014.3 1021.6 1025.1 1028.7 1030.2 1036.0 DAY 14 28 10 17 12 10 16 25 17 31 19 14 MIN. QNH PRESSURE IN HPA 1003.5 996.5 997.6 999.4 1001.2 995.0 999.1 1001.3 1001.9 1002.2 1008.5 993.6 993.6 DAY 21 5 24 24 1 20 20 5 14 18 9 19 MEAN QFF PRESSURE IN HPA 1015.4 1007.9 1019.0 1008.4 1008.2 1005.1 1006.2 1008.0 1009.6 1015.2 1016.5 1016.2 1011.3 MAX. QFF PRESSURE IN HPA 1026.8 1023.1 1036.5 1027.3 1017.6 1011.3 1011.6 1014.5 1021.8 1025.4 1029.1 1030.6 1036.5 DAY 14 28 10 17 12 10 16 25 17 31 19 14 MIN. QFF PRESSURE IN HPA 1003.9 996.9 998.0 999.6 1001.4 995.1 999.2 1001.4 1002.0 1002.4 1008.8 994.0 994.0 DAY 21 5 24 24 1 20 20 5 14 18 9 19 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1012.1 1004.8 1016.1 1005.3 1005.2 1001.7 1003.1 1004.8 1006.7 1012.5 1013.5 1013.2 1008.2 MAX. QFE PRESSURE IN HPA 1024.4 1020.6 1033.1 1023.5 1014.6 1008.4 1008.6 1011.1 1018.4 1022.8 1026.7 1027.1 1033.1 DAY 14 28 10 17 12 9 16 25 17 2 19 14 MIN. QFE PRESSURE IN HPA 1000.6 992.6 996.2 997.7 998.6 991.6 996.4 998.2 999.0 1000.3 1005.9 992.9 991.6 DAY 21 5 24 24 1 20 19 5 14 18 9 19 MEAN QNH PRESSURE IN HPA 1015.6 1008.3 1019.6 1008.8 1008.8 1005.2 1006.6 1008.3 1010.2 1016.1 1017.1 1016.7 1011.8 MAX. QNH PRESSURE IN HPA 1028.0 1024.2 1036.7 1027.1 1018.1 1011.9 1012.1 1014.6 1022.0 1026.4 1030.3 1030.7 1036.7 DAY 14 28 10 17 12 9 16 25 17 2 19 14 MIN. QNH PRESSURE IN HPA 1004.1 996.1 999.7 1001.2 1002.1 995.1 999.9 1001.7 1002.5 1003.8 1009.4 996.4 995.1 DAY 21 5 24 24 1 20 19 5 14 18 9 19 MEAN QFF PRESSURE IN HPA 1016.1 1007.2 1020.1 1009.1 1009.0 1005.3 1006.7 1008.5 1010.4 1016.4 1017.4 1017.2 1011.9 MAX. QFF PRESSURE IN HPA 1028.4 1024.7 1037.2 1027.5 1018.4 1012.1 1012.3 1014.8 1022.2 1026.7 1030.7 1031.2 1037.2 DAY 14 28 10 17 12 9 17 25 17 2 19 14 MIN. QFF PRESSURE IN HPA 1004.5 996.5 1000.1 1001.4 1002.3 995.2 1000.0 1001.8 1002.6 1004.0 1009.7 996.8 995.2 DAY 21 5 24 24 1 20 19 5 14 18 9 19 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1011.4 1004.4 1015.8 1004.6 1004.6 1000.6 1002.2 1004.0 1005.6 1011.7 1012.6 1012.3 1007.5 MAX. QFE PRESSURE IN HPA 1023.7 1019.9 1032.8 1022.4 1013.8 1008.3 1008.4 1010.5 1016.6 1022.9 1025.7 1025.9 1032.8 DAY 14 28 10 17 12 9 17 25 17 2 19 14 MIN. QFE PRESSURE IN HPA 999.8 992.9 997.0 997.2 998.7 990.6 995.6 997.5 998.2 998.0 1003.6 993.7 990.6 DAY 21 5 20 24 1 20 19 5 14 20 26 19 MEAN QNH PRESSURE IN HPA 1014.9 1008.0 1019.4 1008.1 1008.1 1004.1 1005.7 1007.5 1009.1 1015.3 1016.1 1015.9 1011.0 MAX. QNH PRESSURE IN HPA 1027.3 1023.5 1036.4 1026.0 1017.3 1011.8 1011.9 1014.0 1020.1 1026.5 1029.3 1029.5 1036.4 DAY 14 28 10 17 12 9 17 25 17 2 19 14 MIN. QNH PRESSURE IN HPA 1003.3 996.4 1000.5 1000.7 1002.2 994.1 999.1 1001.0 1001.7 1001.5 1007.1 997.2 994.1 DAY 21 5 20 24 1 20 19 5 14 20 26 19 MEAN QFF PRESSURE IN HPA 1015.4 1006.9 1019.6 1008.4 1008.3 1004.2 1005.8 1007.6 1009.3 1015.5 1016.7 1016.3 1011.2 MAX. QFF PRESSURE IN HPA 1027.7 1024.0 1036.9 1026.3 1017.6 1012.0 1012.1 1014.2 1020.4 1026.8 1029.7 1029.9 1036.9 DAY 14 28 10 17 12 9 17 25 17 2 19 14 MIN. QFF PRESSURE IN HPA 1003.7 996.8 1000.8 1000.9 1002.4 994.2 999.2 1001.1 1001.8 1001.8 1007.5 997.6 994.2 DAY 21 5 20 24 1 20 19 5 14 20 26 19 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1010.1 1003.4 1014.3 1003.0 1003.0 999.0 1000.7 1002.3 1003.9 1010.3 1011.5 1011.5 1006.1 MAX. QFE PRESSURE IN HPA 1021.3 1018.2 1030.7 1022.4 1012.1 1007.0 1006.4 1009.1 1013.5 1020.9 1024.5 1024.6 1030.7 DAY 14 28 10 16 12 9 17 24 17 2 19 14 MIN. QFE PRESSURE IN HPA 998.0 991.0 994.6 995.4 997.5 988.4 993.9 996.3 996.3 998.5 1003.1 994.6 988.4 DAY 21 5 20 12 1 20 19 5 6 17 26 18 MEAN QNH PRESSURE IN HPA 1013.6 1007.0 1017.8 1006.5 1006.5 1002.5 1004.2 1005.8 1007.4 1013.9 1015.0 1015.1 1009.6 MAX. QNH PRESSURE IN HPA 1024.9 1021.8 1034.3 1026.0 1015.6 1010.5 1009.9 1012.6 1017.0 1024.5 1028.1 1028.2 1034.3 DAY 14 28 10 16 12 9 17 24 17 2 19 14 MIN. QNH PRESSURE IN HPA 1001.5 994.5 998.1 998.9 1001.0 991.9 997.4 999.8 999.8 1002.0 1006.6 998.1 991.9 DAY 21 5 20 12 1 20 19 5 6 17 26 18 MEAN QFF PRESSURE IN HPA 1014.1 1005.9 1018.2 1006.8 1006.5 1002.5 1004.3 1005.9 1007.5 1014.1 1015.3 1015.5 1009.7 MAX. QFF PRESSURE IN HPA 1025.3 1022.3 1034.8 1026.3 1015.9 1010.7 1010.1 1012.7 1017.2 1024.7 1028.5 1028.6 1034.8 DAY 14 28 10 16 12 9 17 24 17 2 19 14 MIN. QFF PRESSURE IN HPA 1001.8 994.9 998.4 999.1 1001.2 991.9 997.5 999.9 999.9 1002.2 1007.0 998.5 991.9 DAY 21 5 20 12 1 20 19 5 6 17 26 18 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1011.0 1003.9 1014.2 1002.6 1002.9 998.5 1000.4 1001.8 1003.8 1010.6 1011.9 1012.2 1006.2 MAX. QFE PRESSURE IN HPA 1023.5 1018.4 1030.4 1023.5 1011.5 1006.6 1006.0 1009.0 1014.3 1020.2 1024.5 1023.6 1030.4 DAY 23 28 9 16 12 9 16 24 16 2 19 14 MIN. QFE PRESSURE IN HPA 999.3 991.4 995.6 993.2 997.2 987.8 993.0 995.5 995.7 999.0 1003.4 994.2 987.8 DAY 21 5 20 14 16 20 19 5 1 17 26 18 MEAN QNH PRESSURE IN HPA 1014.6 1007.4 1017.7 1006.1 1006.4 1002.0 1003.9 1005.3 1007.3 1014.1 1015.5 1015.7 1009.7 MAX. QNH PRESSURE IN HPA 1027.1 1022.0 1034.0 1027.1 1015.0 1010.1 1009.5 1012.5 1017.8 1023.8 1028.1 1027.2 1034.0 DAY 23 28 9 16 12 9 16 24 16 2 19 14 MIN. QNH PRESSURE IN HPA 1002.8 994.9 999.1 996.7 1000.7 991.3 996.5 999.0 999.2 1002.5 1006.9 997.7 991.3 DAY 21 5 20 14 16 20 19 5 1 17 26 18 MEAN QFF PRESSURE IN HPA 1014.6 1007.9 1018.2 1006.4 1006.6 1002.1 1004.0 1005.5 1007.5 1014.4 1015.8 1016.2 1009.9 MAX. QFF PRESSURE IN HPA 1025.3 1022.5 1034.5 1027.5 1015.3 1010.3 1009.6 1012.7 1018.0 1024.1 1028.5 1027.6 1034.5 DAY 14 28 9 16 12 9 16 24 16 2 19 14 MIN. QFF PRESSURE IN HPA 1003.2 995.3 999.4 997.0 1000.8 991.3 996.6 999.1 999.3 1002.7 1007.3 998.1 991.3 DAY 21 5 20 14 16 20 19 5 1 17 26 18 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1011.9 1003.3 1014.9 1003.7 1004.0 999.8 1001.8 1003.3 1005.4 1011.4 1012.4 1012.6 1007.0 MAX. QFE PRESSURE IN HPA 1022.7 1019.5 1031.9 1025.0 1012.3 1007.5 1007.1 1010.4 1016.9 1020.4 1025.7 1024.7 1031.9 DAY 23 28 9 16 11 9 15 24 16 2 18 13 MIN. QFE PRESSURE IN HPA 1000.1 992.6 996.1 994.9 998.5 989.3 994.3 997.0 997.1 999.5 1004.0 992.4 989.3 DAY 21 15 20 14 16 20 19 5 6 17 26 18 MEAN QNH PRESSURE IN HPA 1015.5 1006.8 1018.4 1007.2 1007.5 1003.3 1005.3 1006.8 1008.9 1014.9 1016.0 1016.1 1010.6 MAX. QNH PRESSURE IN HPA 1026.3 1023.1 1035.5 1028.6 1015.8 1011.0 1010.6 1013.9 1020.4 1024.0 1029.3 1028.3 1035.5 DAY 23 28 9 16 11 9 15 24 16 2 18 13 MIN. QNH PRESSURE IN HPA 1003.6 996.1 999.6 998.4 1002.0 992.8 997.8 1000.5 1000.6 1003.0 1007.5 995.9 992.8 DAY 21 15 20 14 16 20 19 5 6 17 26 18 MEAN QFF PRESSURE IN HPA 1015.6 1007.3 1018.8 1007.5 1007.7 1003.5 1005.5 1006.9 1009.1 1015.2 1016.3 1016.6 1010.8 MAX. QFF PRESSURE IN HPA 1024.4 1023.6 1036.0 1029.0 1016.1 1011.2 1010.7 1014.1 1020.7 1024.3 1029.7 1028.7 1036.0 DAY 22 28 9 16 12 9 15 24 16 2 18 13 MIN. QFF PRESSURE IN HPA 1004.0 996.5 999.9 998.7 1002.2 992.9 997.9 1000.6 1000.7 1003.2 1007.9 996.3 992.9 DAY 21 15 20 14 16 20 19 5 6 17 26 18 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1011.9 1003.2 1014.6 1003.8 1004.2 1000.4 1002.1 1003.5 1005.5 1011.4 1012.4 1012.4 1007.1 MAX. QFE PRESSURE IN HPA 1022.3 1019.5 1032.2 1024.8 1013.0 1007.7 1007.6 1010.6 1017.8 1019.8 1025.5 1025.9 1032.2 DAY 22 28 9 16 11 9 15 24 16 30 18 13 MIN. QFE PRESSURE IN HPA 1002.4 993.1 996.4 995.5 998.7 990.3 994.8 997.0 997.1 999.4 1004.4 991.4 990.3 DAY 21 5 20 30 16 19 19 5 6 17 26 18 MEAN QNH PRESSURE IN HPA 1015.4 1006.7 1018.2 1007.3 1007.7 1003.9 1005.6 1007.0 1009.0 1014.9 1015.9 1015.9 1010.6 MAX. QNH PRESSURE IN HPA 1025.9 1023.1 1035.8 1028.4 1016.5 1011.2 1011.1 1014.1 1021.4 1023.4 1029.1 1029.5 1035.8 DAY 22 28 9 16 11 9 15 24 16 30 18 13 MIN. QNH PRESSURE IN HPA 1005.9 996.6 999.9 999.0 1002.2 993.8 998.3 1000.5 1000.6 1002.9 1007.9 994.9 993.8 DAY 21 5 20 30 16 19 19 5 6 17 26 18 MEAN QFF PRESSURE IN HPA 1015.2 1007.2 1018.6 1007.6 1007.9 1004.0 1005.8 1007.1 1009.2 1015.2 1016.5 1016.4 1010.9 MAX. QFF PRESSURE IN HPA 1025.0 1023.6 1036.3 1028.8 1016.8 1011.4 1011.2 1014.3 1021.6 1023.7 1029.5 1029.9 1036.3 DAY 13 28 9 16 11 9 15 24 16 30 18 13 MIN. QFF PRESSURE IN HPA 1006.3 997.0 1000.2 999.2 1002.3 993.9 998.4 1000.6 1000.7 1003.1 1008.3 995.2 993.9 DAY 21 5 20 30 16 19 19 5 6 17 26 18 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.8 3.5 5.2 14.2 17.7 23.7 26.9 28.7 24.3 16.3 8.9 5.2 14.9 MINIMUN AIR TEMPERATURE (C) -0.8 0.5 0.8 7.9 12.0 17.3 20.4 20.3 16.8 11.6 6.3 -0.4 9.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 2 13 15 3 0 0 0 33 DAYS WITH MINIMUM TEMP. <=-4 6 1 3 0 0 0 0 0 0 0 0 3 13 DAYS WITH FREEZING MIN.<= 0 18 12 14 0 0 0 0 0 0 0 0 17 61 TEMPERATURE RECORDS LOWEST(C) -8.5 -4.5 -9.4 3.0 6.0 13.4 16.5 15.0 9.0 7.0 1.5 -5.8 -9.4 DAY 21 8 2 2 9 21 22 31 29 9 13 13 MAXIMUM AIR TEMPERATURE (C) 9.4 7.3 10.2 21.0 24.3 30.6 33.8 34.0 29.6 19.8 11.1 9.5 20.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 1 25 29 31 20 0 0 0 107 DAYS WITH MAXIMUM TEMP. <= 0 0 1 1 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS HIGHEST(C) 19.8 21.0 18.6 33.2 30.0 34.6 38.2 36.6 35.8 26.4 18.8 18.6 38.2 DAY 18 27 10 15 31 6 10 16 4 5 3 21 DIF. BETWEEN (MAX.-MIN.) (C) 10.2 6.8 9.4 13.1 12.3 13.3 13.4 13.7 12.8 8.2 4.8 9.9 10.6 MEAN DAILY TEMP. (MDT) (C) 4.3 3.9 5.5 14.5 18.2 23.9 27.1 27.2 23.2 15.7 8.7 4.5 14.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 2.1 6.9 103.9 189.1 191.3 90.5 0.0 0.0 0.0 583.8 HEATING DEG. DAYS(BASE 18 0C) 425.5 394.7 387.4 112.6 39.7 5.1 0.0 0.0 13.2 76.5 279.5 417.5 2151.7 DEWPOINT (MEAN C) 0.5 1.5 1.9 9.7 13.8 17.7 19.9 16.9 15.7 11.5 6.1 0.1 9.6 MIXING RATIO (G/KG) 4.05 4.28 4.40 7.61 10.17 12.98 15.06 12.35 11.46 8.55 5.98 3.91 8.40 VAPOUR PRESSURE (HPA) 6.53 6.91 7.13 12.18 16.14 20.44 23.65 19.51 18.21 13.71 9.65 6.31 13.36 SATURATION DEF. (HPA) 1.88 1.23 2.05 4.95 5.05 10.10 13.09 21.10 13.68 5.22 2.14 2.95 6.95 RELATIVE HUMIDITY (MEAN %) 81 89 81 77 79 72 68 52 62 75 84 73 74 RELATIVE HUMIDITY (MAX. %) 95 97 95 95 95 90 89 72 83 91 93 87 90 RELATIVE HUMIDITY (MIN. %) 62 75 64 56 61 54 49 37 45 60 74 57 58 RELATIVE HUMIDITY (MEAN% 03UTC) 88 95 92 91 88 84 82 71 82 89 92 84 87 RELATIVE HUMIDITY (MEAN% 09UTC) 72 83 72 62 67 61 55 44 55 68 77 62 65 RELATIVE HUMIDITY (MEAN% 15UTC) 82 87 73 65 71 61 55 46 56 75 87 77 70 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 8.8 26.3 6.8 33.2 36.7 43.0 3.2 0.5 11.3 16.0 60.8 9.2 255.8 DAYS WITH PRECIPITATION >=10 0 1 0 1 1 1 0 0 0 0 3 0 7 DAYS WITH PRECIPITATION >= 5 0 1 1 2 2 4 0 0 0 0 6 1 17 DAYS WITH PRECIPITATION >= 1 3 5 1 4 6 4 2 0 4 7 8 3 47 DAYS WITH PRECIPITATION 6 11 7 6 14 9 4 3 4 14 16 10 104 GREATEST DAILY PRECIPITATION 4.7 12.0 6.1 23.2 20.0 24.2 2.0 0.3 4.0 4.0 13.0 5.0 24.2 DAY 15 10 1 3 22 19 28 24 29 24 29 4 DAY WITH THUNDER STORM 0 0 0 0 11 6 3 0 0 0 0 0 20 DAYS WITH SNOW OR SLEET 3 6 3 0 0 0 0 0 0 0 0 2 14 DAYS WITH DUST 0 0 0 1 0 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 270 135 135 135 135 135 135 135 135 135 135 270 135 PREVAILING WIND SPEED(KNOTS) 6.1 11.0 9.6 7.6 9.3 9.5 10.4 10.2 10.6 6.9 7.5 6.9 9.5 PREVAILING WIND PERCENT 28.2 22.0 39.7 31.3 31.6 19.2 32.1 32.3 32.0 25.8 36.7 24.5 27.3 CALMS PERCENT OF WIND 32.3 54.3 30.4 25.8 15.8 25.9 25.2 19.4 15.3 31.6 35.3 19.4 27.9 NO. OF WIND OBSERVATION 248 223 247 240 247 239 246 155 150 155 150 155 2455 VECTOR WIND DIRECTION (MEAN) 241 141 138 134 124 137 128 120 127 108 139 226 136 VECTOR WIND MAGNITUDE(KNOTS) 1.7 2.1 3.8 2.4 2.7 1.8 4.3 4.1 3.5 1.1 2.7 1.4 2.3 WIND STEADINESES (MEAN %) 37.0 53.8 70.4 50.0 45.0 33.3 71.7 67.2 53.8 28.2 62.8 25.5 44.2 WIND SPEED (MEAN KNOTS) 4.6 3.9 5.4 4.8 6.0 5.4 6.0 6.1 6.5 3.9 4.3 5.5 5.2 FASTEST WIND DIRECTION 150 130 150 150 360 130 150 150 150 120 160 150 150 FASTEST WIND SPEED (KNOTS) 29 27 35 29 25 27 29 19 29 19 19 27 35 DAY 19 28 11 16 4 25 17 2 20 10 5 8 DAYS WITH SKY CLEAR (0-2)/8 9 3 3 9 8 17 21 25 23 4 3 11 136 DAYS WITH P.CLOUDY (3-6)/8 10 7 15 12 16 9 8 6 3 12 3 11 112 DAYS WITH CLOUDY (7-8)/8 12 18 13 9 7 4 2 0 4 15 24 9 117 DAYS WITH VISIBILITY =< 2 KM 13 10 6 8 1 1 1 1 4 7 2 2 56 DURATION OF SUNSHINE HOURS 115.5 54.9 110.4 192.8 206.0 256.6 260.5 295.8 247.4 119.2 43.2 124.4 2026.7 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1010.4 1010.8 1015.4 1008.7 1004.7 1000.6 1001.6 1003.1 1007.4 1011.7 1014.2 1011.1 1008.3 MAX. QFE PRESSURE IN HPA 1024.2 1019.4 1027.0 1018.3 1016.8 1007.8 1009.6 1009.1 1019.3 1023.3 1025.6 1032.2 1032.2 DAY-HOUR 23- 6 28-21 16- 6 5- 6 17- 9 3- 6 3- 6 24- 6 30- 3 14- 9 16- 6 10- 6 MIN. QFE PRESSURE IN HPA 997.6 998.0 1004.2 995.7 987.3 991.2 992.4 994.2 1000.4 999.9 996.8 989.7 987.3 DAY-HOUR 18-12 3-21 9-15 11-15 3-15 12-15 9-15 14-15 5-15 23- 3 9-12 27-12 MEAN QNH PRESSURE IN HPA 1013.9 1014.3 1018.9 1012.2 1008.2 1004.1 1005.1 1006.6 1010.9 1015.2 1017.7 1014.6 1011.8 MAX. QNH PRESSURE IN HPA 1027.8 1023.0 1030.6 1021.9 1020.3 1011.3 1013.1 1012.6 1022.9 1026.9 1029.2 1035.8 1035.8 DAY-HOUR 23- 6 28-21 16- 6 5- 6 17- 9 3- 6 3- 6 24- 6 30- 3 14- 9 16- 6 10- 6 MIN. QNH PRESSURE IN HPA 1001.1 1001.5 1007.7 999.2 990.8 994.7 995.9 997.7 1003.9 1003.4 1000.3 993.2 990.8 DAY-HOUR 18-12 3-21 9-15 11-15 3-15 12-15 9-15 14-15 5-15 23- 3 9-12 27-12 MEAN QFF PRESSURE IN HPA 1014.4 1014.8 1019.4 1012.5 1008.5 1004.3 1005.2 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1028.3 1023.4 1031.0 1022.2 1020.6 1011.5 1013.3 ****** ****** ****** ****** ****** ****** DAY-HOUR 23- 6 28-21 16- 6 5- 6 17- 9 3- 6 3- 6 **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA 1001.4 1002.0 1008.1 999.4 990.9 994.8 995.9 ****** ****** ****** ****** ****** ****** DAY-HOUR 18-12 3-21 9-15 11-15 3-15 12-15 9-15 **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1010.3 1010.5 1015.1 1008.5 1004.8 1000.7 1001.7 ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 1022.8 1017.9 1023.8 1017.1 1015.0 1007.3 1007.2 ****** ****** ****** ****** ****** ****** DAY 23 1 16 5 18 3 2 ** ** ** ** ** MIN. QFE PRESSURE IN HPA 998.5 998.1 1005.8 998.6 991.6 993.9 994.5 ****** ****** ****** ****** ****** ****** DAY 19 4 10 15 4 13 10 ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1013.8 1014.0 1018.6 1012.0 1008.3 1004.2 1005.2 ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1026.4 1021.5 1027.4 1020.6 1018.5 1010.8 1010.7 ****** ****** ****** ****** ****** ****** DAY 23 1 16 5 18 3 2 ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1002.0 1001.6 1009.3 1002.1 995.1 997.4 998.0 ****** ****** ****** ****** ****** ****** DAY 19 4 10 15 4 13 10 ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1014.2 1014.5 1019.1 1012.3 1008.6 1004.4 1005.3 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1026.9 1021.9 1027.8 1020.9 1018.8 1011.0 1010.9 ****** ****** ****** ****** ****** ****** DAY 23 1 16 5 18 3 2 ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1002.3 1002.1 1009.6 1002.3 995.3 997.5 998.0 ****** ****** ****** ****** ****** ****** DAY 19 4 10 15 4 13 10 ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1010.4 1010.7 1015.7 1009.1 1005.4 1001.3 1002.6 1004.1 1008.0 1011.9 1014.2 1011.2 1008.7 MAX. QFE PRESSURE IN HPA 1023.1 1018.0 1025.1 1017.6 1015.9 1007.5 1008.0 1007.8 1019.3 1021.9 1024.8 1030.4 1030.4 DAY 23 13 16 5 17 3 3 4 30 15 16 10 MIN. QFE PRESSURE IN HPA 998.3 998.6 1006.5 998.5 991.6 995.6 996.3 997.4 1002.2 999.9 998.2 992.5 991.6 DAY 19 4 10 15 3 12 9 15 15 23 9 27 MEAN QNH PRESSURE IN HPA 1013.9 1014.2 1019.2 1012.6 1008.9 1004.8 1006.1 1007.6 1011.5 1015.4 1017.7 1014.7 1012.2 MAX. QNH PRESSURE IN HPA 1026.7 1021.6 1028.7 1021.2 1019.4 1011.0 1011.5 1011.3 1022.9 1025.5 1028.4 1034.0 1034.0 DAY 23 13 16 5 17 3 3 4 30 15 16 10 MIN. QNH PRESSURE IN HPA 1001.8 1002.1 1010.0 1002.0 995.1 999.1 999.8 1000.9 1005.7 1003.4 1001.7 996.0 995.1 DAY 19 4 10 15 3 12 9 15 15 23 9 27 MEAN QFF PRESSURE IN HPA 1014.4 1014.7 1019.6 1012.9 1009.1 1004.9 1006.3 1007.7 1011.7 1015.7 1018.1 1014.6 1012.5 MAX. QFF PRESSURE IN HPA 1027.2 1022.0 1029.2 1021.5 1019.7 1011.2 1011.7 1011.5 1023.2 1025.8 1028.8 1034.5 1034.5 DAY 23 13 16 5 17 3 3 24 30 15 16 10 MIN. QFF PRESSURE IN HPA 1002.2 1002.6 1010.4 1002.2 995.3 999.2 999.8 1001.0 1005.9 1003.6 1002.0 996.4 995.3 DAY 19 4 10 15 3 12 10 15 15 23 9 27 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1011.4 1011.7 1016.7 1010.1 1005.8 1001.6 1003.0 1004.6 1008.9 1012.9 1015.1 1012.0 1009.5 MAX. QFE PRESSURE IN HPA 1024.2 1018.8 1027.0 1018.3 1016.7 1007.8 1009.6 1009.1 1018.8 1022.9 1025.6 1032.2 1032.2 DAY 23 13 16 5 17 3 3 24 30 14 16 10 MIN. QFE PRESSURE IN HPA 998.9 1001.6 1008.3 999.2 991.7 995.4 996.8 998.2 1003.9 1004.4 998.8 991.8 991.7 DAY 18 4 10 15 3 12 9 15 15 23 9 27 MEAN QNH PRESSURE IN HPA 1014.9 1015.2 1020.2 1013.6 1009.4 1005.1 1006.5 1008.1 1012.4 1016.4 1018.6 1015.6 1013.0 MAX. QNH PRESSURE IN HPA 1027.8 1022.4 1030.6 1021.9 1020.2 1011.3 1013.1 1012.6 1022.4 1026.5 1029.2 1035.8 1035.8 DAY 23 13 16 5 17 3 3 24 30 14 16 10 MIN. QNH PRESSURE IN HPA 1002.4 1005.1 1011.8 1002.7 995.2 998.9 1000.3 1001.7 1007.4 1007.9 1002.3 995.3 995.2 DAY 18 4 10 15 3 12 9 15 15 23 9 27 MEAN QFF PRESSURE IN HPA 1015.3 1015.7 1020.7 1013.9 1009.6 1005.3 1006.7 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1028.3 1022.8 1031.0 1022.2 1020.5 1011.5 1013.3 ****** ****** ****** ****** ****** ****** DAY 23 13 16 5 17 3 3 ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1002.8 1005.6 1012.2 1002.9 995.4 999.0 1000.4 ****** ****** ****** ****** ****** ****** DAY 18 4 10 15 3 12 9 ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1010.4 1011.0 1016.0 1009.3 1004.8 1000.8 1002.0 1003.5 1007.8 1012.0 1014.2 1011.0 1008.6 MAX. QFE PRESSURE IN HPA 1023.1 1018.0 1026.5 1017.6 1016.8 1007.5 1007.4 1008.4 1017.3 1023.3 1024.7 1031.7 1031.7 DAY 28 1 16 19 17 20 1 24 30 14 16 10 MIN. QFE PRESSURE IN HPA 998.0 1001.1 1006.7 997.4 990.3 994.4 995.4 997.3 1003.3 1002.5 997.3 991.2 990.3 DAY 18 6 9 15 3 12 9 15 5 22 9 27 MEAN QNH PRESSURE IN HPA 1013.9 1014.6 1019.5 1012.8 1008.3 1004.3 1005.5 1007.0 1011.3 1015.5 1017.8 1014.6 1012.1 MAX. QNH PRESSURE IN HPA 1026.7 1021.6 1030.1 1021.2 1020.3 1011.0 1010.9 1011.9 1020.8 1026.9 1028.3 1035.3 1035.3 DAY 28 1 16 19 17 20 1 24 30 14 16 10 MIN. QNH PRESSURE IN HPA 1001.5 1004.6 1010.2 1000.9 993.8 997.9 998.9 1000.8 1006.8 1006.0 1000.8 994.7 993.8 DAY 18 6 9 15 3 12 9 15 5 22 9 27 MEAN QFF PRESSURE IN HPA 1014.4 1015.3 1019.9 1013.1 1008.6 1004.6 1005.6 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1027.2 1022.1 1030.5 1021.5 1020.6 1011.3 1011.0 ****** ****** ****** ****** ****** ****** DAY 28 1 16 19 17 20 1 ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1001.8 1005.0 1010.5 1001.0 994.0 998.0 998.9 ****** ****** ****** ****** ****** ****** DAY 18 25 9 15 3 12 9 ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1009.6 1009.9 1014.4 1007.9 1003.5 999.4 1000.5 1001.9 1006.1 1010.8 1013.4 1010.2 1007.3 MAX. QFE PRESSURE IN HPA 1021.9 1017.1 1024.7 1016.6 1015.4 1006.2 1006.4 1006.6 1015.8 1023.2 1023.9 1030.9 1030.9 DAY 28 1 16 19 17 20 1 3 29 14 16 10 MIN. QFE PRESSURE IN HPA 997.6 999.7 1004.7 995.9 988.0 991.4 993.3 995.1 1001.2 1000.9 996.8 989.7 988.0 DAY 18 6 9 11 3 12 9 15 5 22 9 27 MEAN QNH PRESSURE IN HPA 1013.1 1013.5 1018.0 1011.4 1007.0 1002.9 1004.0 1005.4 1009.6 1014.3 1017.0 1013.7 1010.8 MAX. QNH PRESSURE IN HPA 1025.5 1020.6 1028.3 1020.1 1018.9 1009.7 1009.9 1010.1 1019.3 1026.8 1027.5 1034.5 1034.5 DAY 28 1 16 19 17 20 1 3 29 14 16 10 MIN. QNH PRESSURE IN HPA 1001.1 1003.2 1008.2 999.4 991.5 994.9 996.8 998.6 1004.7 1004.4 1000.3 993.2 991.5 DAY 18 6 9 11 3 12 9 15 5 22 9 27 MEAN QFF PRESSURE IN HPA 1013.5 1013.9 1018.4 1011.7 1007.2 1003.2 1004.1 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1025.9 1021.2 1028.7 1020.5 1019.2 1010.0 1010.0 ****** ****** ****** ****** ****** ****** DAY 28 1 16 19 17 20 1 ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1001.4 1003.7 1008.5 999.6 991.6 995.0 996.8 ****** ****** ****** ****** ****** ****** DAY 18 6 9 11 3 12 9 ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1010.2 1010.4 1014.6 1007.9 1003.6 999.5 1000.2 1001.7 1006.0 1011.1 1014.0 1011.0 1007.5 MAX. QFE PRESSURE IN HPA 1021.9 1017.5 1024.5 1016.6 1014.8 1005.8 1006.6 1007.2 1018.7 1023.3 1024.3 1031.2 1031.2 DAY 28 1 16 19 17 2 1 3 29 14 15 10 MIN. QFE PRESSURE IN HPA 999.1 999.8 1004.2 995.7 987.3 991.2 992.4 994.2 1000.4 1000.5 999.4 990.5 987.3 DAY 18 3 9 11 3 12 9 14 5 22 8 27 MEAN QNH PRESSURE IN HPA 1013.7 1014.0 1018.1 1011.4 1007.1 1003.0 1003.7 1005.2 1009.6 1014.6 1017.5 1014.6 1011.0 MAX. QNH PRESSURE IN HPA 1025.5 1021.1 1028.1 1020.1 1018.3 1009.3 1010.1 1010.7 1022.3 1026.9 1027.9 1034.8 1034.8 DAY 28 1 16 19 17 2 1 3 29 14 15 10 MIN. QNH PRESSURE IN HPA 1002.6 1003.3 1007.7 999.2 990.8 994.7 995.9 997.7 1003.9 1004.0 1002.9 994.0 990.8 DAY 18 3 9 11 3 12 9 14 5 22 8 27 MEAN QFF PRESSURE IN HPA 1014.2 1014.4 1018.6 1011.7 1007.3 1003.1 1003.8 1005.3 1009.7 1014.9 1017.9 1014.5 1011.3 MAX. QFF PRESSURE IN HPA 1025.9 1021.6 1028.5 1020.5 1018.6 1009.6 1010.3 1010.8 1022.6 1027.2 1028.3 1035.3 1035.3 DAY 28 1 16 19 17 20 1 3 29 14 15 10 MIN. QFF PRESSURE IN HPA 1003.0 1003.8 1008.1 999.4 990.9 994.8 995.9 997.8 1004.0 1004.2 1003.2 994.3 990.9 DAY 18 3 9 11 3 12 9 14 5 22 9 27 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1010.7 1011.2 1015.5 1008.5 1004.9 1000.6 1001.5 ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 1022.0 1019.0 1024.9 1017.2 1015.3 1007.5 1007.7 ****** ****** ****** ****** ****** ****** DAY 22 28 2 19 17 2 1 ** ** ** ** ** MIN. QFE PRESSURE IN HPA 1000.0 998.7 1004.8 996.7 990.6 992.4 993.5 ****** ****** ****** ****** ****** ****** DAY 18 3 9 11 3 12 9 ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1014.2 1014.7 1019.0 1012.0 1008.4 1004.1 1005.0 ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1025.6 1022.6 1028.5 1020.7 1018.8 1011.0 1011.2 ****** ****** ****** ****** ****** ****** DAY 22 28 2 19 17 2 1 ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1003.5 1002.2 1008.3 1000.2 994.1 995.9 997.0 ****** ****** ****** ****** ****** ****** DAY 18 3 9 11 3 12 9 ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1014.7 1015.2 1019.6 1012.3 1008.6 1004.2 1005.1 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1026.0 1023.0 1029.0 1021.1 1019.1 1011.2 1011.4 ****** ****** ****** ****** ****** ****** DAY 22 28 2 19 17 2 1 ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1003.9 1002.7 1008.7 1000.4 994.3 996.0 997.1 ****** ****** ****** ****** ****** ****** DAY 18 3 9 11 3 12 9 ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1010.6 1011.0 1015.2 1008.4 1005.2 1001.0 1001.6 ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 1022.7 1019.4 1024.0 1017.5 1015.1 1007.1 1007.7 ****** ****** ****** ****** ****** ****** DAY 22 28 2 4 17 2 1 ** ** ** ** ** MIN. QFE PRESSURE IN HPA 999.9 998.0 1005.0 996.3 991.8 993.7 993.9 ****** ****** ****** ****** ****** ****** DAY 18 3 9 15 3 12 9 ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1014.1 1014.5 1018.8 1011.9 1008.7 1004.5 1005.1 ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1026.3 1023.0 1027.6 1021.1 1018.6 1010.6 1011.2 ****** ****** ****** ****** ****** ****** DAY 22 28 2 4 17 2 1 ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1003.4 1001.5 1008.5 999.8 995.3 997.2 997.4 ****** ****** ****** ****** ****** ****** DAY 18 3 9 15 3 12 9 ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1014.5 1015.3 1019.2 1012.2 1008.9 1004.6 1005.2 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1026.7 1023.4 1028.1 1021.3 1019.0 1010.7 1011.4 ****** ****** ****** ****** ****** ****** DAY 22 28 2 4 17 2 1 ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1003.7 1002.0 1008.8 999.9 995.5 997.3 997.4 ****** ****** ****** ****** ****** ****** DAY 18 3 9 15 3 12 9 ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.5 6.0 7.1 13.2 22.0 27.8 28.3 27.6 21.9 12.8 8.8 5.2 15.5 MINIMUN AIR TEMPERATURE (C) -0.2 1.6 2.1 5.8 13.0 17.6 19.6 20.8 15.4 8.8 3.9 0.7 9.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 3 11 16 1 0 0 0 31 DAYS WITH MINIMUM TEMP. <=-4 3 0 0 0 0 0 0 0 0 0 0 5 8 DAYS WITH FREEZING MIN.<= 0 16 10 6 0 0 0 0 0 0 0 2 12 46 TEMPERATURE RECORDS LOWEST(C) -4.6 -3.5 -2.6 1.4 6.2 14.2 15.0 14.5 6.0 3.6 -2.5 -8.4 -8.4 DAY 12 2 2 6 1 1 3 30 24 28 30 28 MAXIMUM AIR TEMPERATURE (C) 10.1 8.9 10.6 17.9 27.4 33.6 33.3 31.9 26.3 15.4 11.9 8.2 19.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 4 25 26 21 4 0 0 0 80 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 1 1 TEMPERATURE RECORDS HIGHEST(C) 22.0 20.4 18.6 29.5 32.4 38.0 37.4 38.0 31.6 29.2 19.0 18.0 38.0 DAY 30 24 5 23 25 19 31 9 16 1 21 17 DIF. BETWEEN (MAX.-MIN.) (C) 10.3 7.3 8.5 12.1 14.4 16.0 13.7 11.1 10.9 6.6 8.0 7.5 10.5 MEAN DAILY TEMP. (MDT) (C) 4.9 5.3 6.4 11.9 20.2 25.6 26.4 26.3 20.8 12.1 7.9 4.4 14.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 20.0 138.3 164.8 166.1 34.9 2.7 0.0 0.0 526.8 HEATING DEG. DAYS(BASE 18 0C) 404.8 355.9 360.5 184.2 6.0 0.0 0.0 0.0 13.4 191.9 293.8 420.6 2231.3 DEWPOINT (MEAN C) 0.8 2.9 3.2 6.2 12.7 14.3 19.5 18.4 13.3 8.7 5.6 2.5 9.0 MIXING RATIO (G/KG) 4.04 4.74 4.85 6.10 9.41 10.47 14.71 13.65 9.77 7.13 5.74 4.70 7.94 VAPOUR PRESSURE (HPA) 6.52 7.66 7.78 9.77 14.95 16.59 23.12 21.49 15.56 11.51 9.26 7.57 12.65 SATURATION DEF. (HPA) 2.94 2.05 2.62 6.28 12.52 22.41 16.70 16.59 11.67 3.97 2.37 1.58 8.47 RELATIVE HUMIDITY (MEAN %) 75 83 79 67 59 48 61 60 61 79 82 85 70 RELATIVE HUMIDITY (MAX. %) 90 94 95 88 85 73 82 80 84 92 93 94 88 RELATIVE HUMIDITY (MIN. %) 61 70 65 52 42 32 47 46 44 67 70 74 56 RELATIVE HUMIDITY (MEAN% 03UTC) 86 92 94 88 85 73 82 79 82 92 92 92 86 RELATIVE HUMIDITY (MEAN% 09UTC) 66 79 72 59 47 40 55 51 51 72 76 79 62 RELATIVE HUMIDITY (MEAN% 15UTC) 77 82 75 62 53 40 54 56 58 80 86 88 68 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 2.2 23.3 61.1 11.1 19.2 2.0 28.5 8.7 12.4 109.2 3.8 37.0 318.5 DAYS WITH PRECIPITATION >=10 0 0 2 0 1 0 2 0 0 2 0 0 7 DAYS WITH PRECIPITATION >= 5 0 2 4 1 2 0 2 0 1 10 0 4 26 DAYS WITH PRECIPITATION >= 1 1 6 7 2 4 1 2 4 3 14 1 7 52 DAYS WITH PRECIPITATION 4 12 11 6 7 3 5 6 6 20 6 11 97 GREATEST DAILY PRECIPITATION 1.0 7.0 17.0 7.5 10.0 2.0 14.0 3.0 6.0 21.0 1.8 9.0 21.0 DAY 18 5 14 4 22 5 3 28 23 6 7 7 DAY WITH THUNDER STORM 0 0 0 0 3 1 1 1 0 1 0 0 7 DAYS WITH SNOW OR SLEET 0 0 3 0 0 0 0 0 0 0 0 1 4 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 1 0 2 3 WIND DIRECTION (PREVAILING) 135 135 135 135 135 135 135 135 135 135 135 270 135 PREVAILING WIND SPEED(KNOTS) 11.9 9.9 9.3 10.2 12.6 10.4 10.3 10.8 8.1 8.6 6.6 6.3 10.2 PREVAILING WIND PERCENT 20.6 24.3 32.9 27.3 34.8 30.7 40.1 41.8 22.0 25.7 22.2 21.0 28.7 CALMS PERCENT OF WIND 23.2 34.3 25.8 25.3 19.4 14.7 21.7 13.1 21.3 40.1 31.9 38.5 25.6 NO. OF WIND OBSERVATION 155 140 155 150 155 150 152 153 150 152 144 143 1799 VECTOR WIND DIRECTION (MEAN) 156 133 124 134 124 112 120 121 97 129 206 180 127 VECTOR WIND MAGNITUDE(KNOTS) 1.1 2.1 2.3 2.5 4.2 3.5 5.1 5.0 1.9 2.2 0.7 1.9 2.5 WIND STEADINESES (MEAN %) 20.4 46.7 44.2 43.1 59.2 55.6 77.3 71.4 38.8 55.0 20.0 33.9 45.5 WIND SPEED (MEAN KNOTS) 5.4 4.5 5.2 5.8 7.1 6.3 6.6 7.0 4.9 4.0 3.5 5.6 5.5 FASTEST WIND DIRECTION 150 140 150 160 120 150 130 150 140 100 350 160 160 FASTEST WIND SPEED (KNOTS) 31 35 27 25 27 23 23 23 23 23 16 39 39 DAY 28 26 10 24 2 11 7 11 22 2 3 13 DAYS WITH SKY CLEAR (0-2)/8 7 5 4 11 9 14 20 16 12 4 9 5 116 DAYS WITH P.CLOUDY (3-6)/8 8 7 10 9 14 13 10 9 9 11 9 11 120 DAYS WITH CLOUDY (7-8)/8 16 16 17 10 8 3 1 6 9 16 12 15 129 DAYS WITH VISIBILITY =< 2 KM 4 12 8 3 2 2 2 0 3 6 8 10 60 DURATION OF SUNSHINE HOURS 104.8 92.7 94.1 199.9 239.4 259.2 313.4 234.5 164.9 93.7 109.1 79.3 1985.0 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1010.3 1012.1 1007.2 1007.8 1004.4 1002.5 1001.9 1001.9 1007.6 1016.9 1014.1 1009.8 1008.0 MAX. QFE PRESSURE IN HPA 1029.7 1027.1 1019.8 1017.9 1014.6 1010.6 1011.0 1010.6 1016.5 1027.5 1032.0 1026.1 1032.0 DAY-HOUR 20- 9 1- 3 23- 6 1- 6 13- 6 6- 6 10- 9 28- 6 23- 6 28- 6 30- 6 27- 6 MIN. QFE PRESSURE IN HPA 995.7 994.9 992.4 990.5 991.7 994.4 992.5 992.7 996.9 1002.5 998.9 994.2 990.5 DAY-HOUR 10-12 25-15 19-12 19- 9 23- 3 18-15 6-15 18-12 5-12 2-12 21- 3 23-12 MEAN QNH PRESSURE IN HPA 1013.8 1015.6 1010.7 1011.3 1007.9 1006.0 1005.4 1005.4 1011.2 1020.4 1017.7 1013.3 1011.6 MAX. QNH PRESSURE IN HPA 1033.3 1030.7 1023.4 1021.5 1018.1 1014.1 1014.5 1014.1 1020.0 1031.1 1035.6 1029.7 1035.6 DAY-HOUR 20- 9 1- 3 23- 6 1- 6 13- 6 6- 6 10- 9 28- 6 23- 6 28- 6 30- 6 27- 6 MIN. QNH PRESSURE IN HPA 999.2 998.4 995.9 994.0 995.2 997.9 996.0 996.2 1000.4 1006.0 1002.4 997.7 994.0 DAY-HOUR 10-12 25-15 19-12 19- 9 23- 3 18-15 6-15 18-12 5-12 2-12 21- 3 23-12 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 1010.0 1012.5 1007.2 1008.5 1005.3 1003.5 1003.3 1003.1 1008.4 1016.5 1013.8 1008.9 1008.4 MAX. QFE PRESSURE IN HPA 1028.8 1027.1 1019.1 1017.5 1013.8 1009.9 1010.8 1010.4 1015.8 1025.9 1030.6 1025.3 1030.6 DAY 21 1 23 1 13 6 10 28 23 27 29 27 MIN. QFE PRESSURE IN HPA 996.6 999.8 995.0 996.0 991.7 995.7 995.7 995.4 1000.1 1006.5 998.9 998.2 991.7 DAY 10 25 19 19 23 2 8 18 22 2 21 23 MEAN QNH PRESSURE IN HPA 1013.6 1016.0 1010.8 1012.0 1008.8 1007.0 1006.8 1006.6 1011.9 1020.0 1017.3 1012.4 1011.9 MAX. QNH PRESSURE IN HPA 1032.4 1030.7 1022.7 1021.1 1017.3 1013.4 1014.3 1013.9 1019.3 1029.5 1034.2 1028.9 1034.2 DAY 21 1 23 1 13 6 10 28 23 27 29 27 MIN. QNH PRESSURE IN HPA 1000.1 1003.3 998.5 999.5 995.2 999.2 999.2 998.9 1003.6 1010.0 1002.4 1001.7 995.2 DAY 10 25 19 19 23 2 8 18 22 2 21 23 MEAN QFF PRESSURE IN HPA 1014.0 1016.4 1011.2 1012.4 1009.0 1007.2 1006.9 1006.7 1012.1 1020.3 1017.7 1012.8 1012.2 MAX. QFF PRESSURE IN HPA 1032.9 1031.2 1023.1 1021.5 1017.6 1013.6 1014.5 1014.1 1019.6 1029.9 1034.7 1029.4 1034.7 DAY 21 1 23 1 13 6 10 28 23 27 29 27 MIN. QFF PRESSURE IN HPA 1000.5 1003.6 998.8 999.8 995.3 999.3 999.3 999.0 1003.8 1010.2 1002.8 1002.1 995.3 DAY 10 25 19 19 23 2 8 18 22 2 21 23 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1011.2 1013.3 1008.0 1009.0 1005.7 1003.9 1003.2 1003.3 1008.9 1017.6 1015.4 1010.5 1009.2 MAX. QFE PRESSURE IN HPA 1028.8 1026.7 1019.8 1017.9 1014.6 1010.6 1010.8 1010.6 1016.5 1027.5 1032.0 1026.1 1032.0 DAY 21 1 23 1 13 6 10 28 23 28 30 27 MIN. QFE PRESSURE IN HPA 998.1 999.1 994.4 995.0 993.7 997.7 995.9 995.0 1000.3 1006.1 1000.0 996.8 993.7 DAY 10 25 19 19 23 19 8 18 22 2 21 23 MEAN QNH PRESSURE IN HPA 1014.7 1016.8 1011.6 1012.5 1009.2 1007.4 1006.7 1006.8 1012.5 1021.1 1018.9 1014.0 1012.7 MAX. QNH PRESSURE IN HPA 1032.4 1030.3 1023.4 1021.5 1018.1 1014.1 1014.3 1014.1 1020.0 1031.1 1035.6 1029.7 1035.6 DAY 21 1 23 1 13 6 10 28 23 28 30 27 MIN. QNH PRESSURE IN HPA 1001.6 1002.6 997.9 998.5 997.2 1001.2 999.4 998.5 1003.8 1009.6 1003.5 1000.3 997.2 DAY 10 25 19 19 23 19 8 18 22 2 21 23 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 1010.5 1012.5 1007.4 1008.0 1004.5 1002.9 1002.1 1002.2 1007.9 1017.2 1014.3 1010.2 1008.3 MAX. QFE PRESSURE IN HPA 1029.7 1024.0 1018.9 1016.9 1014.2 1009.1 1011.0 1009.3 1016.3 1027.2 1031.0 1025.7 1031.0 DAY 20 1 22 1 13 6 10 28 23 28 29 27 MIN. QFE PRESSURE IN HPA 996.1 997.1 993.0 990.5 993.3 996.7 994.6 994.0 998.6 1004.6 1000.7 995.2 990.5 DAY 10 25 19 19 23 18 8 18 5 2 3 23 MEAN QNH PRESSURE IN HPA 1014.1 1016.1 1010.9 1011.5 1008.0 1006.4 1005.6 1005.7 1011.4 1020.8 1017.9 1013.8 1011.8 MAX. QNH PRESSURE IN HPA 1033.3 1027.6 1022.5 1020.4 1017.7 1012.6 1014.5 1012.8 1019.8 1030.8 1034.6 1029.3 1034.6 DAY 20 1 22 1 13 6 10 28 23 28 29 27 MIN. QNH PRESSURE IN HPA 999.6 1000.6 996.5 994.0 996.8 1000.2 998.1 997.5 1002.1 1008.1 1004.2 998.7 994.0 DAY 10 25 19 19 23 18 8 18 5 2 3 23 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 1009.4 1011.1 1006.4 1006.8 1003.0 1001.3 1000.6 1000.7 1006.5 1016.4 1013.1 1009.4 1007.1 MAX. QFE PRESSURE IN HPA 1028.5 1021.0 1018.2 1014.7 1011.9 1007.0 1010.0 1008.4 1015.2 1026.4 1029.9 1024.2 1029.9 DAY 20 6 22 1 13 6 10 27 23 28 29 27 MIN. QFE PRESSURE IN HPA 995.7 995.1 992.4 991.1 992.0 995.4 993.2 992.7 996.9 1002.5 1001.9 994.2 991.1 DAY 10 25 19 19 23 19 6 18 5 2 3 23 MEAN QNH PRESSURE IN HPA 1013.0 1014.6 1009.9 1010.3 1006.5 1004.8 1004.1 1004.2 1010.0 1019.9 1016.6 1012.9 1010.6 MAX. QNH PRESSURE IN HPA 1032.1 1024.6 1021.8 1018.2 1015.4 1010.5 1013.5 1011.9 1018.7 1030.0 1033.5 1027.8 1033.5 DAY 20 6 22 1 13 6 10 27 23 28 29 27 MIN. QNH PRESSURE IN HPA 999.2 998.6 995.9 994.6 995.5 998.9 996.7 996.2 1000.4 1006.0 1005.4 997.7 994.6 DAY 10 25 19 19 23 19 6 18 5 2 3 23 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1010.2 1011.3 1006.9 1006.9 1003.4 1001.2 1000.2 1000.6 1006.6 1016.7 1014.1 1010.0 1007.3 MAX. QFE PRESSURE IN HPA 1029.7 1020.7 1018.2 1014.6 1011.4 1007.0 1009.1 1009.3 1015.2 1026.6 1030.9 1024.3 1030.9 DAY 20 6 22 5 13 5 10 27 23 28 29 27 MIN. QFE PRESSURE IN HPA 998.4 994.9 996.5 991.3 993.0 994.4 992.5 993.7 998.0 1003.7 1002.1 995.1 991.3 DAY 9 25 19 19 24 18 6 14 5 2 20 23 MEAN QNH PRESSURE IN HPA 1013.8 1014.8 1010.4 1010.4 1006.9 1004.7 1003.7 1004.1 1010.1 1020.3 1017.6 1013.5 1010.8 MAX. QNH PRESSURE IN HPA 1033.3 1024.3 1021.8 1018.1 1014.9 1010.5 1012.6 1012.8 1018.7 1030.2 1034.5 1027.9 1034.5 DAY 20 6 22 5 13 5 10 27 23 28 29 27 MIN. QNH PRESSURE IN HPA 1001.9 998.4 1000.0 994.8 996.5 997.9 996.0 997.2 1001.5 1007.2 1005.6 998.6 994.8 DAY 9 25 19 19 24 18 6 14 5 2 20 23 MEAN QFF PRESSURE IN HPA 1014.2 1015.3 1010.8 1010.7 1007.1 1004.8 1004.1 1004.5 1010.3 1019.9 1017.7 1012.6 1011.0 MAX. QFF PRESSURE IN HPA 1033.8 1024.7 1022.2 1018.6 1015.2 1010.7 1012.8 1013.0 1019.0 1030.1 1035.0 1028.4 1035.0 DAY 20 6 22 5 13 5 10 27 23 27 29 27 MIN. QFF PRESSURE IN HPA 1002.3 998.7 1000.4 995.1 996.6 998.0 998.1 997.3 1001.7 1007.4 1006.0 999.0 995.1 DAY 9 25 19 19 24 18 7 14 5 2 20 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 PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.4 4.4 8.8 15.5 19.6 27.0 28.6 26.3 22.8 16.7 9.3 6.7 15.8 MINIMUN AIR TEMPERATURE (C) -0.0 0.1 3.5 8.5 12.2 18.5 20.7 19.8 16.4 11.3 4.6 1.4 9.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 4 16 11 0 0 0 0 31 DAYS WITH MINIMUM TEMP. <=-4 1 2 0 0 0 0 0 0 0 0 0 3 6 DAYS WITH FREEZING MIN.<= 0 19 17 5 0 0 0 0 0 0 0 2 11 54 TEMPERATURE RECORDS LOWEST(C) -4.0 -4.0 -2.6 1.0 5.0 13.6 15.6 15.2 12.5 5.2 -2.2 -4.6 -4.6 DAY 30 6 7 6 4 1 28 26 30 23 15 29 MAXIMUM AIR TEMPERATURE (C) 6.7 8.0 12.8 20.3 24.2 32.4 33.3 31.0 27.5 20.8 13.5 10.9 20.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 2 23 29 20 8 0 0 0 82 DAYS WITH MAXIMUM TEMP. <= 0 1 1 0 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS HIGHEST(C) 15.0 19.2 19.4 25.5 31.5 37.8 36.6 34.6 34.4 26.5 23.2 18.6 37.8 DAY 9 22 16 23 19 13 13 1 19 7 2 11 DIF. BETWEEN (MAX.-MIN.) (C) 6.7 7.9 9.3 11.8 12.0 13.9 12.6 11.2 11.1 9.5 8.9 9.5 10.4 MEAN DAILY TEMP. (MDT) (C) 3.3 4.0 8.1 14.4 18.2 25.5 27.0 25.4 21.9 16.1 9.1 6.1 14.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 13.7 135.0 185.6 137.2 48.3 0.0 0.0 0.0 519.9 HEATING DEG. DAYS(BASE 18 0C) 454.1 405.6 306.3 110.1 50.3 0.0 0.0 0.0 0.8 68.7 268.4 368.1 2032.5 DEWPOINT (MEAN C) 0.5 1.3 4.6 9.2 11.7 16.4 18.8 17.5 14.1 11.2 4.9 1.9 9.3 MIXING RATIO (G/KG) 3.97 4.24 5.38 7.45 8.85 11.95 13.94 12.79 10.28 8.46 5.49 4.52 8.11 VAPOUR PRESSURE (HPA) 6.43 6.84 8.62 11.91 14.10 18.82 21.90 20.18 16.34 13.55 8.83 7.27 12.90 SATURATION DEF. (HPA) 1.58 1.84 3.04 6.55 9.86 18.17 18.36 15.03 12.47 6.15 3.29 2.90 8.27 RELATIVE HUMIDITY (MEAN %) 83 82 77 69 64 56 58 61 60 72 77 74 69 RELATIVE HUMIDITY (MAX. %) 94 94 94 94 90 81 81 86 81 88 92 88 89 RELATIVE HUMIDITY (MIN. %) 70 70 62 52 47 40 43 45 44 58 62 60 54 RELATIVE HUMIDITY (MEAN% 03UTC) 91 93 94 93 90 81 82 85 81 87 89 87 88 RELATIVE HUMIDITY (MEAN% 09UTC) 75 75 70 59 53 47 51 53 52 65 68 65 61 RELATIVE HUMIDITY (MEAN% 15UTC) 88 79 74 64 57 50 50 53 57 70 80 76 67 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 18.1 4.2 18.9 54.9 43.8 30.9 7.7 34.0 5.7 16.7 30.3 30.2 295.4 DAYS WITH PRECIPITATION >=10 1 0 0 3 1 1 0 1 0 0 0 1 8 DAYS WITH PRECIPITATION >= 5 1 0 0 3 4 2 1 2 0 1 3 4 21 DAYS WITH PRECIPITATION >= 1 5 1 6 4 7 3 2 6 2 5 6 4 51 DAYS WITH PRECIPITATION 9 7 11 11 9 9 5 6 3 8 13 6 97 GREATEST DAILY PRECIPITATION 11.0 3.4 4.0 24.0 15.0 22.0 5.0 18.0 4.0 7.0 7.3 11.0 24.0 DAY 16 17 27 26 29 19 26 5 12 20 12 27 DAY WITH THUNDER STORM 0 1 0 0 1 6 1 1 2 4 0 0 16 DAYS WITH SNOW OR SLEET 1 2 1 0 0 0 0 0 0 0 0 0 4 DAYS WITH DUST 0 2 0 0 0 0 0 0 0 0 0 0 2 WIND DIRECTION (PREVAILING) 270 90 90 90 90 360 90 90 90 90 90 225 90 PREVAILING WIND SPEED(KNOTS) 7.4 9.9 8.4 9.4 9.2 6.7 10.8 12.3 11.0 10.0 11.0 7.7 10.3 PREVAILING WIND PERCENT 19.4 26.4 20.6 25.7 24.7 16.2 26.8 34.2 32.7 26.5 17.3 18.7 22.8 CALMS PERCENT OF WIND 36.8 25.7 31.6 19.6 22.7 14.9 18.3 19.4 18.7 32.9 23.3 32.3 24.8 NO. OF WIND OBSERVATION 155 144 155 148 154 148 153 155 150 155 150 155 1822 VECTOR WIND DIRECTION (MEAN) 220 109 86 113 59 7 43 81 79 106 174 210 88 VECTOR WIND MAGNITUDE(KNOTS) 1.5 2.8 1.4 3.2 2.2 1.9 2.8 4.1 2.8 2.3 0.7 1.3 1.5 WIND STEADINESES (MEAN %) 34.1 50.0 24.6 45.7 34.4 29.2 40.6 54.7 39.4 43.4 12.3 26.5 24.6 WIND SPEED (MEAN KNOTS) 4.4 5.6 5.7 7.0 6.4 6.5 6.9 7.5 7.1 5.3 5.7 4.9 6.1 FASTEST WIND DIRECTION 100 110 120 110 110 270 80 100 100 80 100 100 270 FASTEST WIND SPEED (KNOTS) 29 27 27 25 25 39 19 23 27 19 27 25 39 DAY 31 25 16 19 1 19 10 29 23 21 17 4 DAYS WITH SKY CLEAR (0-2)/8 4 4 4 4 10 16 13 11 14 12 7 11 110 DAYS WITH P.CLOUDY (3-6)/8 10 8 11 14 13 10 12 10 8 6 9 10 121 DAYS WITH CLOUDY (7-8)/8 17 17 16 12 8 4 6 10 8 13 14 10 135 DAYS WITH VISIBILITY =< 2 KM 13 10 7 2 2 0 3 1 1 4 6 4 53 DURATION OF SUNSHINE HOURS 80.3 84.3 119.9 183.6 229.6 281.1 260.1 200.2 192.2 139.0 109.2 130.6 2010.1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1012.8 1011.7 1005.5 1007.4 1006.0 999.2 999.8 1002.1 1006.8 1011.1 1010.2 1008.1 1006.7 MAX. QFE PRESSURE IN HPA 1023.6 1026.5 1019.7 1021.8 1018.9 1005.7 1006.6 1012.0 1017.1 1023.5 1024.0 1018.8 1026.5 DAY-HOUR 17- 6 6- 6 17- 6 8- 6 5- 6 27- 6 27- 6 21- 6 24- 6 16- 6 5-15 5- 6 MIN. QFE PRESSURE IN HPA 999.9 991.0 987.2 995.4 994.8 988.5 993.4 991.4 994.3 995.2 997.4 988.7 987.2 DAY-HOUR 28-12 29-15 3- 3 22-15 28-15 14-15 8-15 28-15 8-15 30-12 8-12 26- 3 MEAN QNH PRESSURE IN HPA 1016.4 1015.3 1009.0 1010.9 1009.5 1002.7 1003.3 1005.6 1010.3 1014.6 1013.7 1011.6 1010.2 MAX. QNH PRESSURE IN HPA 1027.2 1030.1 1023.3 1025.4 1022.5 1009.2 1010.1 1015.5 1020.6 1027.1 1027.6 1022.4 1030.1 DAY-HOUR 17- 6 6- 6 17- 6 8- 6 5- 6 27- 6 27- 6 21- 6 24- 6 16- 6 5-15 5- 6 MIN. QNH PRESSURE IN HPA 1003.4 994.5 990.7 998.9 998.3 992.0 996.9 994.9 997.8 998.7 1000.9 992.2 990.7 DAY-HOUR 28-12 29-15 3- 3 22-15 28-15 14-15 8-15 28-15 8-15 30-12 8-12 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 1012.8 1011.8 1005.5 1007.9 1006.2 1000.4 1000.6 1002.7 1007.5 1011.4 1010.4 1008.1 1007.1 MAX. QFE PRESSURE IN HPA 1022.5 1025.6 1019.1 1020.4 1018.3 1005.2 1005.7 1011.5 1016.3 1022.5 1022.8 1018.0 1025.6 DAY 17 6 17 8 5 8 27 21 24 16 6 5 MIN. QFE PRESSURE IN HPA 1001.1 996.7 987.2 996.6 996.0 995.4 996.5 994.4 996.2 1000.2 999.4 988.7 987.2 DAY 28 29 3 23 28 24 15 29 9 30 8 26 MEAN QNH PRESSURE IN HPA 1016.4 1015.4 1009.0 1011.4 1009.7 1003.9 1004.0 1006.2 1011.0 1014.9 1014.0 1011.6 1010.6 MAX. QNH PRESSURE IN HPA 1026.1 1029.2 1022.7 1024.0 1021.9 1008.7 1009.2 1015.0 1019.8 1026.1 1026.4 1021.6 1029.2 DAY 17 6 17 8 5 8 27 21 24 16 6 5 MIN. QNH PRESSURE IN HPA 1004.6 1000.2 990.7 1000.1 999.5 998.9 1000.0 997.9 999.7 1003.7 1002.9 992.2 990.7 DAY 28 29 3 23 28 24 15 29 9 30 8 26 MEAN QFF PRESSURE IN HPA 1016.8 1015.8 1009.4 1011.7 1010.0 1004.1 1004.2 1006.4 1011.2 1015.2 1014.3 1012.0 1010.9 MAX. QFF PRESSURE IN HPA 1026.5 1029.7 1023.1 1024.3 1022.2 1008.9 1009.4 1015.2 1020.1 1026.4 1026.7 1021.9 1029.7 DAY 17 6 17 8 5 27 27 21 24 16 6 5 MIN. QFF PRESSURE IN HPA 1005.1 1000.6 991.0 1000.3 999.7 999.1 1000.1 998.0 999.8 1004.0 1003.2 992.6 991.0 DAY 28 29 3 23 28 24 15 29 9 30 8 26 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1013.8 1012.8 1006.5 1008.7 1006.8 1000.6 1001.0 1003.3 1008.1 1012.3 1011.3 1009.1 1007.9 MAX. QFE PRESSURE IN HPA 1023.6 1026.5 1019.7 1021.8 1018.9 1005.7 1006.6 1012.0 1017.1 1023.5 1023.2 1018.8 1026.5 DAY 17 6 17 8 5 27 27 21 24 16 6 5 MIN. QFE PRESSURE IN HPA 1002.1 995.9 990.0 998.3 996.2 995.4 997.3 994.8 996.6 999.6 1000.1 989.6 989.6 DAY 28 29 3 23 28 14 15 29 9 30 8 26 MEAN QNH PRESSURE IN HPA 1017.3 1016.3 1010.0 1012.3 1010.4 1004.1 1004.5 1006.8 1011.6 1015.8 1014.8 1012.6 1011.4 MAX. QNH PRESSURE IN HPA 1027.2 1030.1 1023.3 1025.4 1022.5 1009.2 1010.1 1015.5 1020.6 1027.1 1026.8 1022.4 1030.1 DAY 17 6 17 8 5 27 27 21 24 16 6 5 MIN. QNH PRESSURE IN HPA 1005.6 999.4 993.5 1001.8 999.7 998.9 1000.8 998.3 1000.1 1003.1 1003.6 993.1 993.1 DAY 28 29 3 23 28 14 15 29 9 30 8 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 1013.1 1012.1 1005.8 1007.9 1006.4 999.4 1000.2 1002.4 1007.0 1011.2 1010.2 1008.2 1007.0 MAX. QFE PRESSURE IN HPA 1023.2 1025.2 1018.5 1021.6 1018.4 1004.7 1004.9 1010.8 1016.0 1023.3 1023.4 1017.5 1025.2 DAY 17 6 17 8 5 27 27 21 30 16 5 5 MIN. QFE PRESSURE IN HPA 1000.8 993.3 988.7 998.3 996.8 991.1 996.2 993.9 996.2 996.8 998.4 991.3 988.7 DAY 28 29 3 23 28 15 8 28 9 30 8 26 MEAN QNH PRESSURE IN HPA 1016.7 1015.6 1009.3 1011.4 1009.9 1002.9 1003.7 1005.9 1010.5 1014.7 1013.7 1011.7 1010.5 MAX. QNH PRESSURE IN HPA 1026.8 1028.8 1022.1 1025.2 1022.0 1008.2 1008.4 1014.3 1019.5 1026.9 1027.0 1021.1 1028.8 DAY 17 6 17 8 5 27 27 21 30 16 5 5 MIN. QNH PRESSURE IN HPA 1004.3 996.8 992.2 1001.8 1000.3 994.6 999.7 997.4 999.7 1000.3 1001.9 994.8 992.2 DAY 28 29 3 23 28 15 8 28 9 30 8 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 1012.1 1010.9 1004.6 1006.4 1005.3 998.0 998.9 1001.3 1005.6 1010.0 1009.2 1007.3 1005.8 MAX. QFE PRESSURE IN HPA 1022.3 1023.5 1015.7 1020.2 1017.1 1004.9 1003.7 1008.7 1015.2 1022.1 1023.3 1016.1 1023.5 DAY 17 6 23 8 5 27 26 21 30 16 5 5 MIN. QFE PRESSURE IN HPA 999.9 991.4 990.0 997.0 995.2 989.7 994.4 992.4 995.5 995.2 997.4 992.5 989.7 DAY 28 29 3 22 28 14 8 28 9 30 8 26 MEAN QNH PRESSURE IN HPA 1015.6 1014.4 1008.1 1009.9 1008.8 1001.4 1002.4 1004.8 1009.1 1013.6 1012.7 1010.9 1009.3 MAX. QNH PRESSURE IN HPA 1025.9 1027.1 1019.2 1023.8 1020.6 1008.4 1007.2 1012.2 1018.7 1025.7 1026.9 1019.6 1027.1 DAY 17 6 23 8 5 27 26 21 30 16 5 5 MIN. QNH PRESSURE IN HPA 1003.4 994.9 993.5 1000.5 998.7 993.2 997.9 995.9 999.0 998.7 1000.9 996.0 993.2 DAY 28 29 3 22 28 14 8 28 9 30 8 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 PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1012.4 1011.2 1005.1 1006.3 1005.2 997.7 998.4 1001.1 1005.6 1010.7 1009.8 1007.8 1006.0 MAX. QFE PRESSURE IN HPA 1022.8 1023.8 1016.1 1019.4 1016.7 1003.1 1005.1 1009.3 1015.6 1021.8 1024.0 1016.6 1024.0 DAY 11 5 23 8 5 27 26 20 30 28 5 4 MIN. QFE PRESSURE IN HPA 1001.1 991.0 991.9 995.4 994.8 988.5 993.4 991.4 994.3 997.6 1001.1 993.5 988.5 DAY 28 29 4 22 28 14 8 28 8 30 19 25 MEAN QNH PRESSURE IN HPA 1016.0 1014.7 1008.6 1009.8 1008.8 1001.2 1001.9 1004.6 1009.1 1014.3 1013.4 1011.3 1009.5 MAX. QNH PRESSURE IN HPA 1026.4 1027.4 1019.6 1023.0 1020.2 1006.6 1008.6 1012.8 1019.1 1025.4 1027.6 1020.1 1027.6 DAY 11 5 23 8 5 27 26 20 30 28 5 4 MIN. QNH PRESSURE IN HPA 1004.6 994.5 995.4 998.9 998.3 992.0 996.9 994.9 997.8 1001.1 1004.6 997.0 992.0 DAY 28 29 4 22 28 14 8 28 8 30 19 25 MEAN QFF PRESSURE IN HPA 1016.4 1015.1 1009.0 1010.1 1009.0 1001.6 1002.0 1004.8 1009.3 1014.6 1013.7 1011.8 1009.8 MAX. QFF PRESSURE IN HPA 1026.8 1027.9 1020.1 1023.3 1020.6 1006.7 1008.8 1013.0 1019.4 1025.7 1027.9 1020.6 1027.9 DAY 11 5 23 8 5 27 26 20 30 28 5 4 MIN. QFF PRESSURE IN HPA 1005.1 994.8 995.8 999.1 998.4 992.0 997.0 995.0 997.9 1001.4 1005.0 997.4 992.0 DAY 28 29 4 22 28 14 8 28 8 30 19 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 PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.1 4.6 11.1 17.2 21.8 27.4 30.3 29.0 23.0 16.1 10.7 5.6 16.7 MINIMUN AIR TEMPERATURE (C) -3.3 -2.8 3.8 7.6 12.2 17.0 21.7 20.3 15.8 11.3 6.2 1.2 9.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 19 12 4 0 0 0 35 DAYS WITH MINIMUM TEMP. <=-4 15 9 0 0 0 0 0 0 0 0 0 0 24 DAYS WITH FREEZING MIN.<= 0 27 26 1 0 0 0 0 0 0 0 3 11 68 TEMPERATURE RECORDS LOWEST(C) -10.0 -5.6 -2.0 1.0 4.5 13.0 18.4 14.8 8.4 5.0 -1.5 -3.0 -10.0 DAY 4 3 13 1 1 2 16 19 22 24 23 10 MAXIMUM AIR TEMPERATURE (C) 7.9 9.8 15.8 23.5 27.2 32.9 35.3 34.2 27.6 19.9 14.1 9.6 21.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 2 6 26 31 29 12 0 0 0 106 DAYS WITH MAXIMUM TEMP. <= 0 1 0 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS HIGHEST(C) 14.4 24.0 27.0 32.0 33.0 36.2 39.2 36.6 35.4 29.2 21.2 17.6 39.2 DAY 19 28 26 28 23 19 31 5 2 1 4 19 DIF. BETWEEN (MAX.-MIN.) (C) 11.2 12.6 12.0 15.9 15.0 15.9 13.6 13.9 11.8 8.6 7.9 8.4 12.3 MEAN DAILY TEMP. (MDT) (C) 2.3 3.5 9.8 15.6 19.7 24.9 28.5 27.2 21.7 15.6 10.1 5.4 15.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 11.1 119.7 232.2 185.7 70.4 1.9 0.0 0.0 621.2 HEATING DEG. DAYS(BASE 18 0C) 487.6 405.9 253.8 78.3 11.3 0.0 0.0 0.0 13.4 89.1 235.8 389.8 1964.9 DEWPOINT (MEAN C) -3.2 -2.0 4.2 7.5 11.1 14.9 18.5 18.9 14.9 11.8 6.9 2.0 8.8 MIXING RATIO (G/KG) 3.04 3.32 5.22 6.61 8.40 10.92 13.72 14.09 10.97 8.73 6.38 4.45 7.99 VAPOUR PRESSURE (HPA) 4.93 5.40 8.38 10.60 13.40 17.28 21.59 22.15 17.39 13.98 10.24 7.19 12.71 SATURATION DEF. (HPA) 3.03 3.69 5.46 10.31 13.78 20.38 22.69 19.21 12.36 5.01 2.92 2.22 10.09 RELATIVE HUMIDITY (MEAN %) 67 67 66 57 54 50 52 57 64 78 80 79 64 RELATIVE HUMIDITY (MAX. %) 86 88 85 85 79 78 73 81 87 92 93 92 85 RELATIVE HUMIDITY (MIN. %) 49 48 50 38 37 34 38 43 47 65 65 66 48 RELATIVE HUMIDITY (MEAN% 03UTC) 82 86 85 85 78 78 73 81 87 90 92 90 84 RELATIVE HUMIDITY (MEAN% 09UTC) 55 56 58 47 46 41 44 49 55 71 71 71 55 RELATIVE HUMIDITY (MEAN% 15UTC) 70 65 60 49 49 42 45 50 59 76 82 82 61 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 2.8 11.4 17.1 0.3 13.1 2.3 0.0 13.0 61.6 105.2 9.0 15.0 250.8 DAYS WITH PRECIPITATION >=10 0 0 0 0 1 0 0 1 2 4 0 0 8 DAYS WITH PRECIPITATION >= 5 0 0 2 0 1 0 0 1 3 6 0 2 15 DAYS WITH PRECIPITATION >= 1 1 4 3 0 2 1 0 1 4 7 3 4 30 DAYS WITH PRECIPITATION 4 6 10 1 4 2 0 1 5 10 7 4 54 GREATEST DAILY PRECIPITATION 2.0 4.2 6.0 0.3 10.0 2.0 0.0 13.0 36.0 48.0 4.0 8.0 48.0 DAY 28 23 29 12 18 9 ** 18 19 21 9 2 DAY WITH THUNDER STORM 0 0 0 1 2 0 0 0 0 1 0 0 4 DAYS WITH SNOW OR SLEET 3 5 0 0 0 0 0 0 0 0 0 2 10 DAYS WITH DUST 0 0 1 4 1 1 7 6 1 0 0 0 21 WIND DIRECTION (PREVAILING) 225 225 90 90 90 90 90 90 90 90 225 225 90 PREVAILING WIND SPEED(KNOTS) 8.6 6.7 8.4 15.1 13.3 12.0 15.2 13.2 12.6 12.0 7.7 7.5 12.8 PREVAILING WIND PERCENT 25.8 22.1 22.6 25.3 32.5 40.3 45.5 43.5 28.9 23.3 19.3 21.3 26.0 CALMS PERCENT OF WIND 23.2 25.0 23.2 18.5 11.7 12.1 8.4 13.0 24.2 28.1 33.3 18.7 19.9 NO. OF WIND OBSERVATION 155 140 155 146 154 149 154 154 149 146 150 155 1807 VECTOR WIND DIRECTION (MEAN) 215 158 108 100 92 83 96 98 95 113 232 192 104 VECTOR WIND MAGNITUDE(KNOTS) 2.2 1.2 1.7 4.9 5.1 5.4 8.6 8.3 4.0 2.2 1.3 1.5 3.2 WIND STEADINESES (MEAN %) 36.7 21.1 28.8 56.3 51.5 57.4 75.4 83.8 55.6 36.1 22.0 23.4 41.6 WIND SPEED (MEAN KNOTS) 6.0 5.7 5.9 8.7 9.9 9.4 11.4 9.9 7.2 6.1 5.9 6.4 7.7 FASTEST WIND DIRECTION 130 80 120 130 120 120 110 110 120 100 320 110 130 FASTEST WIND SPEED (KNOTS) 21 35 35 45 35 35 29 35 25 23 31 39 45 DAY 3 11 27 6 25 17 19 10 3 29 18 11 DAYS WITH SKY CLEAR (0-2)/8 18 19 6 14 13 19 18 17 19 8 11 9 171 DAYS WITH P.CLOUDY (3-6)/8 5 2 10 11 17 11 12 12 7 10 6 12 115 DAYS WITH CLOUDY (7-8)/8 8 7 15 5 1 0 1 2 4 13 13 10 79 DAYS WITH VISIBILITY =< 2 KM 4 3 10 3 3 0 2 3 1 5 2 6 42 DURATION OF SUNSHINE HOURS 160.2 181.3 131.3 244.1 272.6 331.1 278.2 200.1 212.2 138.6 112.0 126.0 2387.7 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1014.0 1015.9 1007.4 1008.6 1005.8 1001.6 1001.0 1000.8 1005.0 1010.6 1010.2 1011.4 1007.7 MAX. QFE PRESSURE IN HPA 1027.9 1025.2 1015.2 1017.8 1015.1 1008.5 1009.4 1011.8 1020.3 1023.0 1019.8 1021.3 1027.9 DAY-HOUR 28- 6 3- 6 12- 6 8- 6 20- 6 2- 6 10- 6 18- 6 22- 6 23- 6 8- 6 2- 6 MIN. QFE PRESSURE IN HPA 997.5 1002.4 992.9 1000.2 990.8 993.7 991.6 992.9 993.7 992.4 997.7 997.3 990.8 DAY-HOUR 1-12 27-12 26-15 17-15 6-15 10-15 31-15 1-12 1-15 2- 3 27-12 11- 3 MEAN QNH PRESSURE IN HPA 1017.5 1019.4 1010.9 1012.1 1009.3 1005.1 1004.5 1004.3 1008.5 1014.1 1013.7 1014.9 1011.2 MAX. QNH PRESSURE IN HPA 1031.5 1028.8 1018.7 1021.4 1018.6 1012.0 1012.9 1015.3 1023.9 1026.6 1023.4 1024.9 1031.5 DAY-HOUR 28- 6 3- 6 12- 6 8- 6 20- 6 2- 6 10- 6 18- 6 22- 6 23- 6 8- 6 2- 6 MIN. QNH PRESSURE IN HPA 1001.0 1005.9 996.4 1003.7 994.3 997.2 995.1 996.4 997.2 995.9 1001.2 1000.8 994.3 DAY-HOUR 1-12 27-12 26-15 17-15 6-15 10-15 31-15 1-12 1-15 2- 3 27-12 11- 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 1014.2 1015.9 1007.6 1009.2 1007.0 1002.9 1002.1 1001.8 1005.7 1010.6 1010.1 1011.6 1008.2 MAX. QFE PRESSURE IN HPA 1026.6 1024.7 1014.2 1017.0 1014.9 1007.9 1009.3 1010.8 1019.7 1022.1 1019.4 1020.6 1026.6 DAY 28 8 12 8 1 2 10 18 22 23 8 2 MIN. QFE PRESSURE IN HPA 1000.2 1003.9 995.9 1002.6 995.9 997.3 995.8 993.9 998.5 992.4 998.1 997.3 992.4 DAY 17 1 27 15 7 9 31 1 2 2 27 11 MEAN QNH PRESSURE IN HPA 1017.7 1019.5 1011.1 1012.7 1010.5 1006.4 1005.6 1005.3 1009.2 1014.1 1013.6 1015.1 1011.7 MAX. QNH PRESSURE IN HPA 1030.2 1028.3 1017.7 1020.5 1018.4 1011.4 1012.8 1014.3 1023.3 1025.7 1023.0 1024.2 1030.2 DAY 28 8 12 8 1 2 10 18 22 23 8 2 MIN. QNH PRESSURE IN HPA 1003.7 1007.4 999.4 1006.1 999.4 1000.8 999.3 997.4 1002.0 995.9 1001.6 1000.8 995.9 DAY 17 1 27 15 7 9 31 1 2 2 27 11 MEAN QFF PRESSURE IN HPA 1018.2 1020.0 1011.4 1013.0 1010.7 1006.5 1005.7 1005.1 1009.4 1014.2 1014.0 1015.6 1012.0 MAX. QFF PRESSURE IN HPA 1030.7 1028.7 1018.1 1020.9 1018.7 1011.6 1012.9 1013.6 1023.6 1026.0 1023.3 1024.6 1030.7 DAY 28 8 12 8 1 2 10 19 22 23 8 2 MIN. QFF PRESSURE IN HPA 1004.1 1007.9 999.6 1006.4 999.6 1001.0 999.4 997.4 1002.1 996.0 1002.0 1001.2 996.0 DAY 17 1 27 15 7 9 31 1 2 2 27 11 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1015.2 1017.0 1008.6 1009.9 1007.4 1003.0 1002.4 1002.3 1006.4 1011.5 1011.1 1012.6 1009.0 MAX. QFE PRESSURE IN HPA 1027.9 1025.2 1015.2 1017.8 1015.1 1008.5 1009.4 1011.8 1020.3 1023.0 1019.8 1021.3 1027.9 DAY 28 3 12 8 20 2 10 18 22 23 8 2 MIN. QFE PRESSURE IN HPA 999.9 1004.8 997.4 1002.8 996.1 997.2 996.2 995.0 999.3 992.9 998.8 998.7 992.9 DAY 1 1 27 15 6 10 31 1 1 2 27 11 MEAN QNH PRESSURE IN HPA 1018.7 1020.6 1012.1 1013.4 1010.9 1006.5 1005.9 1005.8 1009.9 1015.1 1014.6 1016.1 1012.5 MAX. QNH PRESSURE IN HPA 1031.5 1028.8 1018.7 1021.4 1018.6 1012.0 1012.9 1015.3 1023.9 1026.6 1023.4 1024.9 1031.5 DAY 28 3 12 8 20 2 10 18 22 23 8 2 MIN. QNH PRESSURE IN HPA 1003.4 1008.3 1000.9 1006.3 999.6 1000.7 999.7 998.5 1002.8 996.4 1002.3 1002.2 996.4 DAY 1 1 27 15 6 10 31 1 1 2 27 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 1014.2 1016.3 1008.0 1008.9 1006.2 1001.8 1001.4 1001.3 1005.3 1010.6 1010.3 1011.5 1008.0 MAX. QFE PRESSURE IN HPA 1027.1 1024.2 1014.4 1015.9 1014.9 1007.6 1008.5 1011.5 1019.6 1022.7 1019.3 1019.6 1027.1 DAY 28 3 12 8 20 2 10 18 22 23 7 2 MIN. QFE PRESSURE IN HPA 998.3 1004.4 996.0 1001.7 994.6 996.1 994.0 994.1 997.1 994.5 999.0 999.2 994.0 DAY 1 27 26 15 6 10 31 1 1 2 27 11 MEAN QNH PRESSURE IN HPA 1017.8 1019.9 1011.5 1012.4 1009.7 1005.3 1004.9 1004.8 1008.8 1014.1 1013.8 1015.0 1011.5 MAX. QNH PRESSURE IN HPA 1030.7 1027.8 1017.9 1019.4 1018.4 1011.1 1012.0 1015.0 1023.2 1026.3 1022.9 1023.2 1030.7 DAY 28 3 12 8 20 2 10 18 22 23 7 2 MIN. QNH PRESSURE IN HPA 1001.8 1007.9 999.5 1005.2 998.1 999.6 997.5 997.6 1000.6 998.0 1002.5 1002.7 997.5 DAY 1 27 26 15 6 10 31 1 1 2 27 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 1012.8 1014.9 1006.5 1007.5 1004.5 1000.2 999.8 999.7 1003.8 1010.0 1009.4 1010.4 1006.6 MAX. QFE PRESSURE IN HPA 1025.5 1022.9 1013.2 1014.0 1012.4 1005.7 1007.3 1009.8 1018.2 1021.6 1019.0 1018.3 1025.5 DAY 28 3 11 8 20 2 10 18 21 23 7 2 MIN. QFE PRESSURE IN HPA 997.5 1002.4 993.8 1000.4 990.9 994.2 992.1 992.9 994.7 994.9 997.7 999.0 990.9 DAY 1 27 26 28 6 10 31 1 1 1 27 8 MEAN QNH PRESSURE IN HPA 1016.4 1018.5 1010.0 1011.0 1008.0 1003.7 1003.3 1003.2 1007.3 1013.5 1012.9 1013.9 1010.1 MAX. QNH PRESSURE IN HPA 1029.1 1026.5 1016.7 1017.5 1015.9 1009.2 1010.8 1013.3 1021.8 1025.2 1022.6 1021.9 1029.1 DAY 28 3 11 8 20 2 10 18 21 23 7 2 MIN. QNH PRESSURE IN HPA 1001.0 1005.9 997.3 1003.9 994.4 997.7 995.6 996.4 998.2 998.4 1001.2 1002.5 994.4 DAY 1 27 26 28 6 10 31 1 1 1 27 8 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1013.4 1015.2 1006.5 1007.2 1004.3 1000.1 999.3 999.2 1003.8 1010.0 1010.0 1011.1 1006.7 MAX. QFE PRESSURE IN HPA 1025.5 1022.9 1013.2 1014.3 1011.7 1004.8 1007.1 1009.8 1018.8 1021.7 1019.5 1018.6 1025.5 DAY 21 7 11 30 20 2 10 18 21 23 7 1 MIN. QFE PRESSURE IN HPA 999.3 1002.7 992.9 1000.2 990.8 993.7 991.6 993.0 993.7 994.5 997.7 999.5 990.8 DAY 1 27 26 17 6 10 31 1 1 1 27 8 MEAN QNH PRESSURE IN HPA 1017.0 1018.7 1010.0 1010.8 1007.8 1003.6 1002.8 1002.7 1007.3 1013.6 1013.5 1014.6 1010.2 MAX. QNH PRESSURE IN HPA 1029.1 1026.5 1016.7 1017.8 1015.2 1008.3 1010.6 1013.3 1022.4 1025.3 1023.1 1022.2 1029.1 DAY 21 7 11 30 20 2 10 18 21 23 7 1 MIN. QNH PRESSURE IN HPA 1002.8 1006.2 996.4 1003.7 994.3 997.2 995.1 996.5 997.2 998.0 1001.2 1003.0 994.3 DAY 1 27 26 17 6 10 31 1 1 1 27 8 MEAN QFF PRESSURE IN HPA 1017.5 1019.2 1010.3 1011.0 1007.9 1003.7 1002.8 1002.8 1007.5 1013.8 1013.9 1015.1 1010.5 MAX. QFF PRESSURE IN HPA 1029.6 1027.0 1017.1 1018.1 1015.4 1008.5 1010.7 1013.5 1022.6 1025.6 1023.4 1022.6 1029.6 DAY 21 7 11 30 20 2 10 18 21 23 7 1 MIN. QFF PRESSURE IN HPA 1003.2 1006.6 996.6 1004.0 994.5 997.3 995.2 996.5 997.3 998.2 1001.6 1003.4 994.5 DAY 1 27 26 17 6 10 31 1 1 1 27 8 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 PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.3 6.2 10.0 14.0 19.5 26.7 29.3 27.3 24.8 16.2 12.5 5.8 16.2 MINIMUN AIR TEMPERATURE (C) -2.6 0.7 3.2 7.8 12.0 17.9 20.4 20.3 17.3 10.6 6.9 1.8 9.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 14 11 1 0 0 0 27 DAYS WITH MINIMUM TEMP. <=-4 6 1 2 0 0 0 0 0 0 0 0 3 12 DAYS WITH FREEZING MIN.<= 0 22 11 7 0 0 0 0 0 0 0 0 12 52 TEMPERATURE RECORDS LOWEST(C) -15.0 -4.0 -5.6 1.0 7.4 14.0 14.0 16.2 14.0 5.0 1.0 -7.0 -15.0 DAY 7 5 17 4 7 1 2 2 23 16 18 31 MAXIMUM AIR TEMPERATURE (C) 6.2 10.1 14.7 18.0 23.9 31.8 33.9 31.6 29.9 20.8 16.8 8.8 20.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 3 22 28 25 16 0 0 0 94 DAYS WITH MAXIMUM TEMP. <= 0 2 0 0 0 0 0 0 0 0 0 0 1 3 TEMPERATURE RECORDS HIGHEST(C) 12.6 21.0 22.6 26.0 32.8 37.2 37.2 35.0 33.2 27.6 27.4 24.6 37.2 DAY 20 28 1 27 31 3 22 4 9 10 3 2 DIF. BETWEEN (MAX.-MIN.) (C) 8.8 9.4 11.5 10.2 11.9 13.9 13.5 11.3 12.6 10.2 9.9 7.0 10.8 MEAN DAILY TEMP. (MDT) (C) 1.8 5.4 8.9 12.9 17.9 24.9 27.1 26.0 23.6 15.7 11.9 5.3 15.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 7.7 115.8 190.2 153.5 77.8 0.0 0.0 0.0 545.1 HEATING DEG. DAYS(BASE 18 0C) 501.6 352.5 280.9 156.6 39.7 0.0 0.0 0.0 0.0 79.5 183.7 393.5 1988.0 DEWPOINT (MEAN C) -1.2 0.7 2.7 9.5 10.8 13.7 16.6 15.3 13.3 10.1 6.9 1.8 8.4 MIXING RATIO (G/KG) 3.59 4.05 4.76 7.63 8.30 10.09 12.18 11.12 9.79 7.78 6.33 4.48 7.51 VAPOUR PRESSURE (HPA) 5.82 6.54 7.68 12.17 13.24 15.97 19.21 17.61 15.54 12.49 10.17 7.25 11.97 SATURATION DEF. (HPA) 1.72 3.37 5.32 4.53 10.40 20.17 22.76 19.44 16.79 6.67 4.87 2.59 9.89 RELATIVE HUMIDITY (MEAN %) 79 72 64 77 62 49 50 51 52 71 72 78 65 RELATIVE HUMIDITY (MAX. %) 90 89 86 97 87 77 78 78 76 93 90 91 86 RELATIVE HUMIDITY (MIN. %) 66 57 47 61 44 32 34 35 36 53 55 64 49 RELATIVE HUMIDITY (MEAN% 03UTC) 87 89 84 96 87 77 78 78 76 91 87 90 85 RELATIVE HUMIDITY (MEAN% 09UTC) 72 63 54 68 53 39 41 41 44 61 62 71 56 RELATIVE HUMIDITY (MEAN% 15UTC) 83 71 60 74 52 40 39 41 44 69 77 80 61 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 29.9 11.9 9.8 94.4 39.5 29.6 2.0 0.6 0.0 46.3 9.5 15.5 289.0 DAYS WITH PRECIPITATION >=10 0 0 0 3 1 2 0 0 0 1 0 0 7 DAYS WITH PRECIPITATION >= 5 4 1 0 4 1 2 0 0 0 3 0 1 16 DAYS WITH PRECIPITATION >= 1 7 4 4 7 1 2 1 0 0 8 5 6 45 DAYS WITH PRECIPITATION 9 4 7 12 5 4 4 3 0 10 8 11 77 GREATEST DAILY PRECIPITATION 8.0 6.3 3.1 34.0 39.0 19.0 2.0 0.3 0.0 21.0 3.9 5.0 39.0 DAY 23 20 31 16 13 15 31 1 ** 14 11 11 DAY WITH THUNDER STORM 0 0 0 0 0 1 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 2 0 1 0 0 0 0 0 0 0 0 1 4 DAYS WITH DUST 0 0 1 0 1 1 1 2 9 1 1 0 17 WIND DIRECTION (PREVAILING) 225 270 90 90 90 90 90 90 90 90 225 90 90 PREVAILING WIND SPEED(KNOTS) 8.0 7.4 11.9 10.2 10.6 11.7 14.5 13.6 15.0 10.9 8.5 11.9 12.1 PREVAILING WIND PERCENT 23.4 18.6 20.0 31.3 24.5 22.7 37.4 42.9 27.3 16.8 19.3 22.6 24.2 CALMS PERCENT OF WIND 17.5 21.4 16.8 17.3 22.6 12.0 18.1 14.9 11.3 32.3 26.7 26.5 19.8 NO. OF WIND OBSERVATION 154 140 155 150 155 150 155 154 150 155 150 155 1823 VECTOR WIND DIRECTION (MEAN) 241 139 129 113 77 45 93 95 87 119 143 129 101 VECTOR WIND MAGNITUDE(KNOTS) 2.4 1.1 1.9 3.3 2.2 3.7 7.2 7.5 4.2 1.8 1.2 2.9 2.6 WIND STEADINESES (MEAN %) 38.7 15.7 21.8 47.8 32.8 43.5 79.1 78.1 44.2 32.7 18.7 42.6 34.2 WIND SPEED (MEAN KNOTS) 6.2 7.0 8.7 6.9 6.7 8.5 9.1 9.6 9.5 5.5 6.4 6.8 7.6 FASTEST WIND DIRECTION 120 120 120 120 120 120 110 110 120 120 120 120 120 FASTEST WIND SPEED (KNOTS) 23 29 29 35 33 31 31 29 29 33 35 33 35 DAY 5 17 3 29 21 4 16 29 14 4 7 3 DAYS WITH SKY CLEAR (0-2)/8 9 6 15 5 13 21 21 18 22 10 10 7 157 DAYS WITH P.CLOUDY (3-6)/8 12 12 6 11 6 9 7 9 6 10 13 8 109 DAYS WITH CLOUDY (7-8)/8 10 10 10 14 12 0 3 4 2 11 7 16 99 DAYS WITH VISIBILITY =< 2 KM 6 7 3 5 3 0 2 0 2 3 6 5 42 DURATION OF SUNSHINE HOURS 123.6 128.0 179.4 155.2 219.0 307.8 200.3 ****** 227.4 139.6 84.1 86.8 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1015.1 1010.4 1013.3 1005.8 1006.3 1000.7 1000.9 1003.2 1003.8 1011.3 1011.0 1014.4 1008.0 MAX. QFE PRESSURE IN HPA 1026.6 1023.8 1036.3 1018.7 1019.0 1009.1 1010.1 1011.1 1014.5 1027.8 1023.0 1024.6 1036.3 DAY-HOUR 9- 6 8- 6 17- 6 3- 6 15- 9 30- 6 31- 6 29- 6 16- 6 15- 6 16- 6 28- 6 MIN. QFE PRESSURE IN HPA 1001.2 991.5 998.6 994.4 991.4 990.6 991.8 996.3 990.5 999.7 998.1 1004.7 990.5 DAY-HOUR 17-12 15-15 1-12 12-15 2- 9 26-15 27-12 7-12 13-15 31-15 9-12 5- 3 MEAN QNH PRESSURE IN HPA 1018.6 1014.0 1016.9 1009.3 1009.8 1004.2 1004.4 1006.7 1007.3 1014.8 1014.5 1017.9 1011.5 MAX. QNH PRESSURE IN HPA 1030.2 1027.4 1039.9 1022.3 1022.6 1012.6 1013.6 1014.6 1018.0 1031.4 1026.6 1028.2 1039.9 DAY-HOUR 9- 6 8- 6 17- 6 3- 6 15- 9 30- 6 31- 6 29- 6 16- 6 15- 6 16- 6 28- 6 MIN. QNH PRESSURE IN HPA 1004.7 995.0 1002.1 997.9 994.9 994.1 995.3 999.8 994.0 1003.2 1001.6 1008.2 994.0 DAY-HOUR 17-12 15-15 1-12 12-15 2- 9 26-15 27-12 7-12 13-15 31-15 9-12 5- 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 1014.9 1010.5 1013.6 1005.9 1007.1 1001.9 1001.8 1004.2 1004.7 1011.7 1011.1 1014.5 1008.5 MAX. QFE PRESSURE IN HPA 1025.7 1023.2 1036.2 1018.0 1018.0 1009.0 1009.5 1010.5 1013.6 1026.9 1021.9 1023.7 1036.2 DAY 9 8 17 3 16 30 31 29 16 15 14 28 MIN. QFE PRESSURE IN HPA 1004.8 993.4 999.1 995.0 995.9 995.0 995.9 999.0 994.7 1002.8 1001.1 1004.7 993.4 DAY 23 16 1 12 2 27 27 7 14 23 1 5 MEAN QNH PRESSURE IN HPA 1018.4 1014.1 1017.2 1009.4 1010.6 1005.4 1005.3 1007.7 1008.2 1015.2 1014.6 1018.0 1012.0 MAX. QNH PRESSURE IN HPA 1029.3 1026.8 1039.8 1021.6 1021.6 1012.5 1013.0 1014.0 1017.1 1030.5 1025.5 1027.3 1039.8 DAY 9 8 17 3 16 30 31 29 16 15 14 28 MIN. QNH PRESSURE IN HPA 1008.3 996.9 1002.6 998.5 999.4 998.5 999.4 1002.5 998.2 1006.3 1004.6 1008.2 996.9 DAY 23 16 1 12 2 27 27 7 14 23 1 5 MEAN QFF PRESSURE IN HPA 1019.0 1014.5 1017.5 1009.8 1010.8 1005.5 1005.5 1007.8 1008.4 1015.5 1015.0 1018.4 1012.3 MAX. QFF PRESSURE IN HPA 1029.9 1027.2 1040.4 1022.0 1021.9 1012.7 1013.2 1014.2 1017.3 1030.9 1025.9 1027.8 1040.4 DAY 9 8 17 3 16 30 31 29 16 15 14 28 MIN. QFF PRESSURE IN HPA 1008.7 997.3 1002.9 998.8 999.6 998.6 999.5 1002.6 998.3 1006.5 1004.9 1008.6 997.3 DAY 23 16 1 12 2 27 27 7 14 23 1 5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1016.1 1011.6 1014.7 1006.7 1007.5 1002.2 1002.1 1004.6 1005.5 1012.6 1012.2 1015.3 1009.3 MAX. QFE PRESSURE IN HPA 1026.6 1023.8 1036.3 1018.7 1018.3 1009.1 1010.1 1011.1 1014.5 1027.8 1023.0 1024.6 1036.3 DAY 9 8 17 3 15 30 31 29 16 15 16 28 MIN. QFE PRESSURE IN HPA 1006.5 996.0 999.9 995.5 993.4 995.5 995.4 999.5 996.7 1004.3 1003.3 1006.0 993.4 DAY 3 15 1 12 2 26 27 7 14 23 9 5 MEAN QNH PRESSURE IN HPA 1019.6 1015.2 1018.3 1010.2 1011.0 1005.7 1005.6 1008.1 1009.0 1016.1 1015.8 1018.8 1012.8 MAX. QNH PRESSURE IN HPA 1030.2 1027.4 1039.9 1022.3 1021.9 1012.6 1013.6 1014.6 1018.0 1031.4 1026.6 1028.2 1039.9 DAY 9 8 17 3 15 30 31 29 16 15 16 28 MIN. QNH PRESSURE IN HPA 1010.0 999.5 1003.4 999.0 996.9 999.0 998.9 1003.0 1000.2 1007.8 1006.8 1009.5 996.9 DAY 3 15 1 12 2 26 27 7 14 23 9 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1015.3 1010.9 1014.0 1006.2 1006.6 1001.0 1001.1 1003.4 1004.1 1011.7 1011.2 1014.4 1008.3 MAX. QFE PRESSURE IN HPA 1025.2 1023.2 1034.0 1017.9 1019.0 1007.3 1009.7 1010.4 1013.9 1027.2 1022.0 1023.5 1034.0 DAY 9 8 16 3 15 30 31 29 16 15 16 28 MIN. QFE PRESSURE IN HPA 1003.4 994.0 999.5 996.5 991.4 993.6 993.4 998.3 995.2 1003.0 1000.5 1005.5 991.4 DAY 17 15 1 12 2 26 27 7 13 31 9 2 MEAN QNH PRESSURE IN HPA 1018.8 1014.5 1017.6 1009.7 1010.2 1004.5 1004.6 1006.9 1007.6 1015.2 1014.7 1017.9 1011.9 MAX. QNH PRESSURE IN HPA 1028.8 1026.8 1037.6 1021.5 1022.6 1010.8 1013.2 1013.9 1017.4 1030.8 1025.6 1027.1 1037.6 DAY 9 8 16 3 15 30 31 29 16 15 16 28 MIN. QNH PRESSURE IN HPA 1006.9 997.5 1003.0 1000.0 994.9 997.1 996.9 1001.8 998.7 1006.5 1004.0 1009.0 994.9 DAY 17 15 1 12 2 26 27 7 13 31 9 2 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 1014.2 1009.4 1012.1 1005.0 1005.3 999.3 999.7 1001.9 1002.3 1010.2 1009.9 1013.6 1006.9 MAX. QFE PRESSURE IN HPA 1024.7 1021.1 1033.9 1014.9 1018.6 1005.3 1008.5 1009.2 1012.3 1025.8 1020.6 1023.0 1033.9 DAY 6 7 16 3 15 30 31 29 16 15 13 28 MIN. QFE PRESSURE IN HPA 1001.2 992.0 998.6 995.4 992.4 991.5 991.8 996.3 991.9 1000.7 998.1 1004.7 991.5 DAY 17 15 1 12 2 26 27 7 13 31 9 17 MEAN QNH PRESSURE IN HPA 1017.7 1013.0 1015.7 1008.5 1008.8 1002.8 1003.2 1005.4 1005.8 1013.7 1013.5 1017.1 1010.4 MAX. QNH PRESSURE IN HPA 1028.3 1024.7 1037.5 1018.4 1022.2 1008.8 1012.0 1012.7 1015.8 1029.4 1024.2 1026.6 1037.5 DAY 6 7 16 3 15 30 31 29 16 15 13 28 MIN. QNH PRESSURE IN HPA 1004.7 995.5 1002.1 998.9 995.9 995.0 995.3 999.8 995.4 1004.2 1001.6 1008.2 995.0 DAY 17 15 1 12 2 26 27 7 13 31 9 17 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1015.0 1009.7 1012.2 1005.1 1005.2 999.1 999.6 1001.9 1002.3 1010.3 1010.5 1014.2 1007.1 MAX. QFE PRESSURE IN HPA 1024.4 1021.9 1034.9 1015.2 1018.6 1004.8 1007.8 1009.2 1012.4 1025.5 1021.3 1023.2 1034.9 DAY 6 7 16 2 15 29 31 29 16 15 13 28 MIN. QFE PRESSURE IN HPA 1001.8 991.5 1000.0 994.4 994.4 990.6 992.1 996.3 990.5 999.7 998.5 1005.2 990.5 DAY 17 15 1 12 2 26 27 7 13 31 9 1 MEAN QNH PRESSURE IN HPA 1018.5 1013.2 1015.8 1008.6 1008.7 1002.6 1003.0 1005.4 1005.8 1013.9 1014.0 1017.8 1010.6 MAX. QNH PRESSURE IN HPA 1028.0 1025.5 1038.5 1018.7 1022.2 1008.3 1011.3 1012.7 1015.9 1029.1 1024.9 1026.8 1038.5 DAY 6 7 16 2 15 29 31 29 16 15 13 28 MIN. QNH PRESSURE IN HPA 1005.3 995.0 1003.5 997.9 997.9 994.1 995.6 999.8 994.0 1003.2 1002.0 1008.7 994.0 DAY 17 15 1 12 2 26 27 7 13 31 9 1 MEAN QFF PRESSURE IN HPA 1019.0 1013.6 1016.2 1009.0 1009.0 1002.7 1003.2 1005.5 1005.9 1014.2 1014.4 1018.2 1010.9 MAX. QFF PRESSURE IN HPA 1028.6 1025.9 1039.0 1019.2 1022.5 1008.5 1011.5 1012.9 1016.1 1029.4 1025.2 1027.3 1039.0 DAY 6 7 16 2 15 29 31 29 16 15 13 28 MIN. QFF PRESSURE IN HPA 1005.8 995.4 1003.8 998.1 998.1 994.2 995.6 999.9 994.1 1003.5 1002.3 1009.0 994.1 DAY 17 15 1 12 2 26 27 7 13 31 9 2 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 PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.0 4.0 7.7 15.6 19.5 26.2 29.7 27.7 21.9 17.5 9.3 4.0 15.6 MINIMUN AIR TEMPERATURE (C) -1.3 -1.4 3.3 8.9 12.1 16.6 20.2 20.9 16.6 13.4 6.4 0.5 9.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 14 17 3 0 0 0 34 DAYS WITH MINIMUM TEMP. <=-4 4 7 1 0 0 0 0 0 0 0 0 3 15 DAYS WITH FREEZING MIN.<= 0 22 18 8 0 0 0 0 0 0 0 1 14 63 TEMPERATURE RECORDS LOWEST(C) -5.6 -8.0 -4.0 3.6 7.8 11.8 15.8 15.5 10.5 10.0 0.0 -4.8 -8.0 DAY 27 12 11 3 7 1 13 28 28 17 27 22 MAXIMUM AIR TEMPERATURE (C) 7.6 7.8 10.9 19.6 24.5 31.6 34.9 32.9 27.9 23.0 12.8 8.8 20.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 17 27 29 9 0 0 0 83 DAYS WITH MAXIMUM TEMP. <= 0 1 1 0 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS HIGHEST(C) 15.8 20.2 19.8 29.2 30.0 39.6 40.2 38.6 32.6 28.0 18.5 15.6 40.2 DAY 6 17 28 26 9 30 4 1 7 1 12 10 DIF. BETWEEN (MAX.-MIN.) (C) 8.9 9.2 7.6 10.7 12.4 15.0 14.7 12.0 11.3 9.6 6.4 8.3 10.5 MEAN DAILY TEMP. (MDT) (C) 3.1 3.2 7.1 14.3 18.3 24.1 27.6 26.9 22.3 18.2 9.6 4.7 14.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.1 2.4 95.7 203.9 183.7 53.9 0.9 0.0 0.0 541.7 HEATING DEG. DAYS(BASE 18 0C) 460.6 414.8 337.8 120.4 22.4 0.0 0.0 0.0 0.0 22.4 251.8 413.4 2043.5 DEWPOINT (MEAN C) -1.7 -0.8 3.2 9.4 10.1 12.9 15.1 15.0 13.2 12.0 7.8 1.9 8.2 MIXING RATIO (G/KG) 3.41 3.68 4.89 7.46 7.91 9.60 11.04 10.96 9.66 8.86 6.62 4.45 7.38 VAPOUR PRESSURE (HPA) 5.53 5.96 7.88 11.92 12.59 15.22 17.40 17.32 15.39 14.19 10.68 7.17 11.77 SATURATION DEF. (HPA) 2.90 2.64 3.12 6.70 10.85 20.37 25.98 20.94 11.83 6.39 1.25 1.21 9.52 RELATIVE HUMIDITY (MEAN %) 71 74 76 70 60 49 45 49 61 74 91 88 67 RELATIVE HUMIDITY (MAX. %) 85 92 92 95 86 82 75 73 85 93 98 98 88 RELATIVE HUMIDITY (MIN. %) 56 58 61 53 40 31 29 33 39 50 79 70 50 RELATIVE HUMIDITY (MEAN% 03UTC) 84 90 91 95 86 81 75 72 78 87 95 94 86 RELATIVE HUMIDITY (MEAN% 09UTC) 62 66 71 61 50 39 36 40 45 57 83 76 57 RELATIVE HUMIDITY (MEAN% 15UTC) 69 71 72 64 51 35 34 38 45 62 91 88 60 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 17.8 23.3 72.5 15.8 67.2 11.4 27.6 1.4 5.0 19.0 46.9 11.8 319.7 DAYS WITH PRECIPITATION >=10 0 0 1 0 2 0 1 0 0 1 2 0 7 DAYS WITH PRECIPITATION >= 5 3 1 6 1 5 1 1 0 1 1 3 1 24 DAYS WITH PRECIPITATION >= 1 4 6 9 5 10 2 2 1 1 1 5 2 48 DAYS WITH PRECIPITATION 7 13 12 8 10 5 5 5 1 5 8 11 90 GREATEST DAILY PRECIPITATION 5.3 9.0 23.0 7.8 24.0 7.2 26.0 1.1 5.0 17.0 18.0 6.0 26.0 DAY 19 21 24 12 22 12 14 12 22 15 3 12 DAY WITH THUNDER STORM 0 0 0 1 2 1 1 0 1 0 1 0 7 DAYS WITH SNOW OR SLEET 5 3 4 0 0 0 0 0 0 0 0 0 12 DAYS WITH DUST 0 0 0 0 1 1 0 0 1 0 0 0 3 WIND DIRECTION (PREVAILING) 225 90 90 90 90 90 90 90 90 90 90 225 90 PREVAILING WIND SPEED(KNOTS) 7.6 9.1 11.8 12.0 11.4 11.5 13.7 12.5 11.0 10.0 7.5 6.2 11.0 PREVAILING WIND PERCENT 20.0 20.7 32.3 30.0 26.5 33.3 27.1 42.0 40.4 33.1 19.2 19.8 27.5 CALMS PERCENT OF WIND 28.4 27.1 18.7 19.3 15.5 14.7 16.8 14.2 14.6 33.1 45.8 26.6 24.0 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 169 240 248 240 248 2205 VECTOR WIND DIRECTION (MEAN) 220 120 117 85 59 77 85 97 104 111 122 171 102 VECTOR WIND MAGNITUDE(KNOTS) 1.3 2.3 3.6 3.2 2.7 3.7 4.2 5.9 5.5 3.3 1.9 2.2 2.9 WIND STEADINESES (MEAN %) 21.3 46.0 48.0 43.2 36.5 49.3 56.0 69.4 65.5 57.9 51.4 41.5 43.3 WIND SPEED (MEAN KNOTS) 6.1 5.0 7.5 7.4 7.4 7.5 7.5 8.5 8.4 5.7 3.7 5.3 6.7 FASTEST WIND DIRECTION 90 110 120 110 110 120 120 120 100 90 120 120 90 FASTEST WIND SPEED (KNOTS) 35 25 25 27 27 29 29 27 29 23 19 17 35 DAY 15 1 29 27 10 3 8 31 9 10 15 2 DAYS WITH SKY CLEAR (0-2)/8 12 8 4 7 11 18 25 20 17 9 2 11 144 DAYS WITH P.CLOUDY (3-6)/8 7 10 10 15 14 8 3 6 9 11 11 9 113 DAYS WITH CLOUDY (7-8)/8 12 10 17 8 6 4 3 5 4 11 17 11 108 DAYS WITH VISIBILITY =< 2 KM 6 8 11 7 3 2 2 1 0 6 6 5 57 DURATION OF SUNSHINE HOURS 131.3 119.2 105.6 178.1 234.6 274.2 ****** ****** 199.1 151.4 64.8 111.2 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1013.0 1014.1 1011.4 1006.3 1003.2 1002.7 998.7 1001.2 1007.3 1010.3 1015.2 1009.7 1007.8 MAX. QFE PRESSURE IN HPA 1023.0 1025.5 1021.2 1016.6 1013.8 1012.4 1010.2 1009.1 1017.0 1018.5 1022.9 1022.1 1025.5 DAY-HOUR 20- 6 22- 6 4- 6 28- 6 5- 6 17- 6 11- 9 27- 6 10- 6 12- 6 26-18 16-21 MIN. QFE PRESSURE IN HPA 998.8 999.1 1001.1 995.0 990.3 993.2 985.8 993.1 996.0 1001.1 1003.2 996.6 985.8 DAY-HOUR 3-15 17- 3 6-15 4-12 16-12 10-15 7-12 1-15 19-12 25-12 30-21 9-18 MEAN QNH PRESSURE IN HPA 1016.6 1017.6 1014.9 1009.9 1006.7 1006.2 1002.2 1004.7 1010.8 1013.8 1018.7 1013.2 1011.3 MAX. QNH PRESSURE IN HPA 1026.6 1029.1 1024.8 1020.1 1017.3 1015.9 1013.7 1012.6 1020.5 1022.1 1026.5 1025.7 1029.1 DAY-HOUR 20- 6 22- 6 4- 6 28- 6 5- 6 17- 6 11- 9 27- 6 10- 6 12- 6 26-18 16-21 MIN. QNH PRESSURE IN HPA 1002.3 1002.6 1004.6 998.5 993.8 996.7 989.2 996.6 999.5 1004.6 1006.7 1000.1 989.2 DAY-HOUR 3-15 17- 3 6-15 4-12 16-12 10-15 7-12 1-15 19-12 25-12 30-21 9-18 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1011.0 1014.0 1019.1 1013.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1020.8 1022.3 1026.9 1026.1 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** 10- 6 12- 6 26-18 16-21 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 999.6 1004.8 1007.1 1000.5 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** 19-12 25-12 30-21 9-18 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1007.2 1010.1 1015.2 1009.8 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1015.8 1017.5 1022.2 1021.3 ****** DAY ** ** ** ** ** ** ** ** 11 13 27 17 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 997.7 1002.5 1006.9 999.0 ****** DAY ** ** ** ** ** ** ** ** 21 25 5 28 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1010.7 1013.7 1018.7 1013.4 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1019.3 1021.1 1025.8 1024.9 ****** DAY ** ** ** ** ** ** ** ** 11 13 27 17 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1001.2 1006.0 1010.4 1002.5 ****** DAY ** ** ** ** ** ** ** ** 21 25 5 28 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1010.9 1013.9 1019.1 1013.8 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1019.6 1021.3 1026.2 1025.3 ****** DAY ** ** ** ** ** ** ** ** 11 13 27 17 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1001.4 1006.2 1010.8 1002.9 ****** DAY ** ** ** ** ** ** ** ** 21 25 5 28 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1013.3 1014.2 1011.5 1006.8 1003.9 1003.6 999.8 1002.0 1007.9 1010.6 1015.3 1009.7 1008.2 MAX. QFE PRESSURE IN HPA 1022.1 1024.6 1020.4 1016.4 1013.1 1011.9 1008.2 1008.9 1016.0 1018.0 1022.3 1020.5 1024.6 DAY 20 22 4 29 5 17 11 27 16 13 27 17 MIN. QFE PRESSURE IN HPA 1000.5 999.1 1001.9 997.6 992.8 995.6 989.7 996.6 998.4 1002.5 1007.7 1000.4 989.7 DAY 31 17 7 4 17 11 7 11 21 25 5 28 MEAN QNH PRESSURE IN HPA 1016.8 1017.7 1015.0 1010.3 1007.4 1007.1 1003.3 1005.5 1011.4 1014.1 1018.9 1013.2 1011.7 MAX. QNH PRESSURE IN HPA 1025.7 1028.2 1024.0 1019.9 1016.6 1015.4 1011.7 1012.4 1019.5 1021.6 1025.9 1024.1 1028.2 DAY 20 22 4 29 5 17 11 27 16 13 27 17 MIN. QNH PRESSURE IN HPA 1004.0 1002.6 1005.4 1001.1 996.3 999.1 993.2 1000.1 1001.9 1006.0 1011.2 1003.9 993.2 DAY 31 17 7 4 17 11 7 11 21 25 5 28 MEAN QFF PRESSURE IN HPA 1017.3 1018.2 1015.4 1010.6 1007.7 1007.2 1003.4 1005.6 1011.5 1014.3 1019.2 1013.7 1012.0 MAX. QFF PRESSURE IN HPA 1026.2 1028.7 1024.4 1020.2 1016.9 1015.6 1011.9 1012.6 1019.7 1021.8 1026.3 1024.6 1028.7 DAY 20 22 4 29 5 17 11 27 16 13 27 17 MIN. QFF PRESSURE IN HPA 1004.5 1003.0 1005.8 1001.4 996.5 999.2 993.2 1000.2 1002.1 1006.2 1011.6 1004.3 993.2 DAY 31 17 7 4 17 11 7 11 21 25 5 28 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1014.3 1015.2 1012.4 1007.5 1004.4 1003.9 1000.1 1002.5 1008.7 1011.6 1016.2 1010.5 1008.9 MAX. QFE PRESSURE IN HPA 1023.0 1025.5 1021.2 1016.6 1013.8 1012.4 1010.0 1009.1 1017.0 1018.5 1022.8 1020.8 1025.5 DAY 20 22 4 28 5 17 11 27 10 12 27 17 MIN. QFE PRESSURE IN HPA 1000.8 1000.6 1003.0 998.2 994.7 996.3 989.5 997.1 999.2 1003.4 1008.3 1001.2 989.5 DAY 31 17 6 4 22 11 7 1 21 25 4 1 MEAN QNH PRESSURE IN HPA 1017.8 1018.7 1016.0 1011.1 1007.9 1007.4 1003.6 1006.0 1012.2 1015.1 1019.7 1014.1 1012.5 MAX. QNH PRESSURE IN HPA 1026.6 1029.1 1024.8 1020.1 1017.3 1015.9 1013.5 1012.6 1020.5 1022.1 1026.4 1024.4 1029.1 DAY 20 22 4 28 5 17 11 27 10 12 27 17 MIN. QNH PRESSURE IN HPA 1004.3 1004.1 1006.5 1001.7 998.2 999.8 993.0 1000.6 1002.7 1006.9 1011.8 1004.7 993.0 DAY 31 17 6 4 22 11 7 1 21 25 4 1 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1012.4 1015.4 1020.1 1014.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1020.8 1022.3 1026.8 1024.9 ****** DAY ** ** ** ** ** ** ** ** 10 12 27 17 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1002.9 1007.1 1012.2 1005.1 ****** DAY ** ** ** ** ** ** ** ** 21 25 4 1 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1013.3 1014.5 1011.9 1006.6 1003.5 1003.1 999.2 1001.6 1007.6 1010.7 1015.3 1009.7 1008.1 MAX. QFE PRESSURE IN HPA 1022.5 1024.8 1020.7 1016.1 1013.6 1012.1 1010.2 1008.5 1016.4 1018.0 1021.0 1020.7 1024.8 DAY 19 22 4 28 4 17 11 27 10 12 27 18 MIN. QFE PRESSURE IN HPA 999.8 1000.0 1002.2 996.3 994.1 995.7 987.9 995.7 997.8 1002.4 1006.5 1000.0 987.9 DAY 3 17 6 4 16 11 7 1 19 25 4 1 MEAN QNH PRESSURE IN HPA 1016.9 1018.0 1015.4 1010.1 1007.0 1006.6 1002.7 1005.1 1011.1 1014.2 1018.9 1013.3 1011.6 MAX. QNH PRESSURE IN HPA 1026.1 1028.4 1024.3 1019.6 1017.1 1015.6 1013.7 1012.0 1019.9 1021.6 1024.6 1024.3 1028.4 DAY 19 22 4 28 4 17 11 27 10 12 27 18 MIN. QNH PRESSURE IN HPA 1003.3 1003.5 1005.7 999.8 997.6 999.2 991.4 999.2 1001.3 1005.9 1010.0 1003.5 991.4 DAY 3 17 6 4 16 11 7 1 19 25 4 1 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1011.3 1014.5 1019.2 1013.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1020.2 1021.8 1025.0 1024.7 ****** DAY ** ** ** ** ** ** ** ** 10 12 27 18 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1001.4 1006.1 1010.4 1003.8 ****** DAY ** ** ** ** ** ** ** ** 19 25 4 1 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1012.0 1013.1 1010.7 1005.4 1002.1 1001.6 997.5 1000.1 1006.1 1009.4 1014.4 1008.9 1006.8 MAX. QFE PRESSURE IN HPA 1021.0 1022.4 1018.9 1015.7 1012.3 1010.7 1008.7 1006.7 1015.6 1017.1 1020.7 1018.9 1022.4 DAY 20 11 4 28 4 17 11 27 10 12 26 18 MIN. QFE PRESSURE IN HPA 998.9 999.6 1001.4 995.0 990.3 994.5 985.8 994.5 996.0 1001.1 1005.3 997.7 985.8 DAY 3 17 6 4 16 11 7 1 19 25 4 9 MEAN QNH PRESSURE IN HPA 1015.5 1016.6 1014.2 1008.9 1005.6 1005.1 1001.0 1003.6 1009.6 1012.9 1017.9 1012.4 1010.3 MAX. QNH PRESSURE IN HPA 1024.6 1026.0 1022.5 1019.2 1015.8 1014.2 1012.2 1010.2 1019.1 1020.6 1024.3 1022.5 1026.0 DAY 20 11 4 28 4 17 11 27 10 12 26 18 MIN. QNH PRESSURE IN HPA 1002.4 1003.1 1004.9 998.5 993.8 998.0 989.2 998.0 999.5 1004.6 1008.8 1001.2 989.2 DAY 3 17 6 4 16 11 7 1 19 25 4 9 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1009.7 1013.1 1018.3 1012.8 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1019.4 1020.9 1024.6 1022.9 ****** DAY ** ** ** ** ** ** ** ** 10 12 26 18 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 999.6 1004.8 1009.2 1001.5 ****** DAY ** ** ** ** ** ** ** ** 19 25 4 9 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1012.4 1013.5 1010.6 1005.4 1002.0 1001.3 997.2 999.8 1006.0 1009.5 1014.8 1009.5 1006.8 MAX. QFE PRESSURE IN HPA 1021.8 1023.0 1018.9 1016.3 1012.6 1010.2 1008.1 1006.8 1015.3 1017.5 1022.1 1020.3 1023.0 DAY 19 11 4 28 4 17 11 26 10 12 26 16 MIN. QFE PRESSURE IN HPA 998.8 1001.9 1001.1 995.2 991.7 993.2 985.8 993.1 996.8 1001.2 1005.8 997.5 985.8 DAY 3 16 6 4 16 10 7 1 19 24 4 9 MEAN QNH PRESSURE IN HPA 1015.9 1017.0 1014.2 1008.9 1005.5 1004.8 1000.7 1003.3 1009.5 1013.0 1018.3 1013.0 1010.3 MAX. QNH PRESSURE IN HPA 1025.4 1026.6 1022.5 1019.8 1016.1 1013.7 1011.6 1010.3 1018.8 1021.1 1025.7 1023.9 1026.6 DAY 19 11 4 28 4 17 11 26 10 12 26 16 MIN. QNH PRESSURE IN HPA 1002.3 1005.4 1004.6 998.7 995.2 996.7 989.2 996.6 1000.3 1004.7 1009.3 1001.0 989.2 DAY 3 16 6 4 16 10 7 1 19 24 4 9 MEAN QFF PRESSURE IN HPA 1016.4 1017.5 1014.6 1009.2 1005.8 1005.0 1000.8 1003.4 1009.6 1013.3 1018.7 1013.4 1010.6 MAX. QFF PRESSURE IN HPA 1025.9 1027.1 1022.9 1020.1 1016.4 1013.9 1011.8 1010.5 1019.1 1021.3 1026.0 1024.3 1027.1 DAY 19 11 4 28 4 17 11 26 10 12 26 16 MIN. QFF PRESSURE IN HPA 1002.7 1005.8 1005.1 999.0 995.4 996.8 989.3 996.7 1000.5 1004.9 1009.7 1001.4 989.3 DAY 3 16 6 4 16 10 7 1 19 24 4 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1007.4 1010.2 1015.4 1009.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1016.2 1018.3 1022.9 1021.8 ****** DAY ** ** ** ** ** ** ** ** 10 12 26 16 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 998.2 1002.1 1004.8 996.6 ****** DAY ** ** ** ** ** ** ** ** 20 24 30 9 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1010.9 1013.8 1018.9 1013.4 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1019.7 1021.9 1026.5 1025.4 ****** DAY ** ** ** ** ** ** ** ** 10 12 26 16 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1001.7 1005.6 1008.3 1000.1 ****** DAY ** ** ** ** ** ** ** ** 20 24 30 9 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1011.1 1014.0 1019.3 1013.9 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1020.0 1022.1 1026.9 1025.8 ****** DAY ** ** ** ** ** ** ** ** 10 12 26 16 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1001.9 1005.8 1008.7 1000.5 ****** DAY ** ** ** ** ** ** ** ** 20 24 30 9 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1007.6 1010.2 1015.1 1009.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1016.7 1018.0 1022.7 1022.1 ****** DAY ** ** ** ** ** ** ** ** 10 12 26 16 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 997.7 1001.8 1003.2 997.8 ****** DAY ** ** ** ** ** ** ** ** 20 24 30 31 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1011.1 1013.7 1018.6 1013.4 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1020.2 1021.6 1026.3 1025.7 ****** DAY ** ** ** ** ** ** ** ** 10 12 26 16 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1001.2 1005.3 1006.7 1001.3 ****** DAY ** ** ** ** ** ** ** ** 20 24 30 31 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1011.3 1014.0 1019.0 1013.8 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1020.5 1021.8 1026.7 1026.1 ****** DAY ** ** ** ** ** ** ** ** 10 12 26 16 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1001.3 1005.5 1007.1 1001.7 ****** DAY ** ** ** ** ** ** ** ** 20 24 30 31 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.4 3.0 7.4 12.4 16.6 23.4 25.9 24.2 20.6 14.8 8.4 4.1 13.6 MINIMUN AIR TEMPERATURE (C) -2.6 -1.8 2.6 7.4 11.1 17.4 20.1 18.7 15.6 9.8 4.3 1.3 8.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 4 11 3 0 0 0 0 18 DAYS WITH MINIMUM TEMP. <=-4 10 9 0 0 0 0 0 0 0 0 0 1 20 DAYS WITH FREEZING MIN.<= 0 24 19 8 0 0 0 0 0 0 0 3 10 64 TEMPERATURE RECORDS LOWEST(C) -8.6 -6.5 -1.8 1.4 0.2 12.0 14.0 14.9 9.8 5.0 -2.0 -4.2 -8.6 DAY 27 10 4 3 3 6 11 19 29 27 28 31 MAXIMUM AIR TEMPERATURE (C) 8.2 9.3 13.2 18.7 23.5 30.0 32.4 30.7 26.5 21.3 14.0 8.1 19.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 4 21 27 22 10 2 0 0 86 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 14.8 20.0 20.8 26.0 34.0 35.0 36.0 33.6 32.8 33.2 25.0 15.4 36.0 DAY 18 19 31 21 29 28 8 20 6 24 22 14 DIF. BETWEEN (MAX.-MIN.) (C) 10.8 11.1 10.6 11.3 12.4 12.6 12.3 12.0 10.9 11.5 9.7 6.8 11.0 MEAN DAILY TEMP. (MDT) (C) 2.8 3.8 7.9 13.1 17.3 23.7 26.2 24.7 21.1 15.6 9.2 4.7 14.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 8.8 94.9 167.7 115.7 40.5 1.6 0.0 0.0 429.4 HEATING DEG. DAYS(BASE 18 0C) 470.9 412.8 312.2 147.8 59.8 3.8 1.3 0.0 12.9 87.2 265.4 411.8 2185.8 DEWPOINT (MEAN C) -4.0 -2.9 2.4 6.6 11.5 15.9 17.0 16.6 14.8 10.4 4.9 1.5 7.9 MIXING RATIO (G/KG) 2.89 3.17 4.63 6.24 8.81 11.62 12.49 12.04 10.77 8.04 5.47 4.35 7.54 VAPOUR PRESSURE (HPA) 4.68 5.11 7.46 9.99 14.04 18.34 19.69 19.09 17.15 12.87 8.81 7.02 12.02 SATURATION DEF. (HPA) 2.86 2.84 3.24 4.98 6.05 11.64 15.02 12.06 8.01 4.73 2.69 1.35 6.29 RELATIVE HUMIDITY (MEAN %) 66 70 74 72 75 67 61 66 72 78 81 85 72 RELATIVE HUMIDITY (MAX. %) 87 87 95 94 96 91 85 89 93 95 93 94 92 RELATIVE HUMIDITY (MIN. %) 44 48 47 48 48 40 42 42 49 56 62 69 50 RELATIVE HUMIDITY (MEAN% 03UTC) 79 82 92 88 93 85 77 85 88 90 90 91 87 RELATIVE HUMIDITY (MEAN% 09UTC) 50 56 57 56 57 49 46 52 60 64 69 73 57 RELATIVE HUMIDITY (MEAN% 15UTC) 56 60 58 61 57 51 48 48 58 73 79 85 61 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 3.6 15.3 3.9 28.7 27.3 24.8 27.4 15.4 19.8 30.9 41.8 62.3 301.2 DAYS WITH PRECIPITATION >=10 0 0 0 1 1 1 1 0 1 1 1 2 9 DAYS WITH PRECIPITATION >= 5 0 1 0 2 2 2 2 2 1 3 3 3 21 DAYS WITH PRECIPITATION >= 1 1 4 1 5 4 5 2 3 3 5 5 9 47 DAYS WITH PRECIPITATION 3 7 7 9 8 13 3 3 10 10 8 14 95 GREATEST DAILY PRECIPITATION 2.4 6.7 2.0 10.7 15.0 11.0 18.0 7.0 12.0 10.0 24.0 24.0 24.0 DAY 2 24 11 18 4 2 11 10 27 6 7 26 DAY WITH THUNDER STORM 0 1 0 0 2 17 3 3 7 0 0 0 33 DAYS WITH SNOW OR SLEET 4 3 0 0 0 0 0 0 0 0 0 1 8 DAYS WITH DUST 1 0 0 2 0 1 0 1 0 0 1 0 6 WIND DIRECTION (PREVAILING) 225 225 90 90 90 90 90 90 90 90 270 225 90 PREVAILING WIND SPEED(KNOTS) 9.0 7.8 9.5 10.3 10.1 11.9 10.9 11.2 9.2 12.7 5.7 5.4 10.5 PREVAILING WIND PERCENT 34.7 23.7 25.0 25.4 30.6 25.4 37.1 39.9 37.5 15.3 15.4 15.3 23.2 CALMS PERCENT OF WIND 15.3 25.4 27.8 20.8 25.4 26.7 21.8 25.8 32.1 34.7 42.5 42.3 28.4 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 223 188 115 122 103 80 93 96 89 137 168 173 118 VECTOR WIND MAGNITUDE(KNOTS) 3.4 1.9 3.0 2.7 3.2 1.9 5.0 5.0 3.6 2.1 0.9 1.5 2.1 WIND STEADINESES (MEAN %) 47.9 28.8 51.7 38.0 52.5 29.7 65.8 73.5 70.6 35.0 21.4 41.7 35.0 WIND SPEED (MEAN KNOTS) 7.1 6.6 5.8 7.1 6.1 6.4 7.6 6.8 5.1 6.0 4.2 3.6 6.0 FASTEST WIND DIRECTION 240 100 120 320 100 90 100 110 90 110 120 120 320 FASTEST WIND SPEED (KNOTS) 29 29 19 39 23 27 23 27 23 25 29 19 39 DAY 18 19 24 22 1 5 4 29 15 5 2 16 DAYS WITH SKY CLEAR (0-2)/8 12 13 11 8 7 12 17 13 12 12 10 10 137 DAYS WITH P.CLOUDY (3-6)/8 12 5 10 11 14 13 8 9 11 10 11 5 119 DAYS WITH CLOUDY (7-8)/8 7 11 10 11 10 5 6 9 7 9 9 16 110 DAYS WITH VISIBILITY =< 2 KM 3 5 5 5 5 0 0 2 3 6 9 3 46 DURATION OF SUNSHINE HOURS 133.4 144.1 160.0 166.6 206.3 245.3 260.7 191.2 173.5 175.2 126.0 84.5 2066.8 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1012.2 1007.9 1010.8 1006.9 1007.1 1000.8 1001.1 1005.4 1008.5 1009.3 1010.3 1012.0 1007.7 MAX. QFE PRESSURE IN HPA 1023.7 1020.3 1024.3 1018.9 1023.2 1012.1 1012.0 1014.0 1020.4 1024.2 1025.4 1023.9 1025.4 DAY-HOUR 27- 6 15- 9 9- 6 30-18 2- 6 6-21 12- 6 30-18 29- 6 15- 6 3- 6 2-18 MIN. QFE PRESSURE IN HPA 994.7 996.8 991.2 993.9 992.1 991.6 992.3 995.6 999.9 994.7 991.4 999.9 991.2 DAY-HOUR 30-12 19- 3 30-12 12-15 9-15 18-15 9-15 24-12 6-15 24-12 22-12 14-12 MEAN QNH PRESSURE IN HPA 1015.7 1011.4 1014.4 1010.4 1010.6 1004.3 1004.6 1008.9 1012.0 1012.8 1013.8 1015.5 1011.2 MAX. QNH PRESSURE IN HPA 1027.3 1023.9 1027.9 1022.5 1026.8 1015.6 1015.5 1017.5 1024.0 1027.8 1029.0 1027.5 1029.0 DAY-HOUR 27- 6 15- 9 9- 6 30-18 2- 6 6-21 12- 6 30-18 29- 6 15- 6 3- 6 2-18 MIN. QNH PRESSURE IN HPA 998.2 1000.3 994.7 997.4 995.6 995.1 995.8 999.1 1003.4 998.2 994.9 1003.4 994.7 DAY-HOUR 30-12 19- 3 30-12 12-15 9-15 18-15 9-15 24-12 6-15 24-12 22-12 14-12 MEAN QFF PRESSURE IN HPA 1016.2 1011.9 1014.7 1010.7 1010.9 1004.5 1004.7 1009.1 1012.2 1013.1 1014.2 1016.0 1011.5 MAX. QFF PRESSURE IN HPA 1027.8 1024.3 1028.3 1022.8 1027.1 1015.9 1015.8 1017.7 1024.2 1028.2 1029.3 1027.9 1029.3 DAY-HOUR 27- 6 15- 9 9- 6 30-18 2- 6 6-21 12- 6 31- 6 29- 6 15- 6 3- 6 2-18 MIN. QFF PRESSURE IN HPA 998.6 1000.6 995.0 997.6 995.8 995.2 995.9 999.2 1003.5 998.4 995.1 1003.7 995.0 DAY-HOUR 30-12 19- 3 30-12 12-15 9-15 18-15 9-15 24-12 6-15 24-12 22-12 14-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1012.1 1007.9 1010.9 1006.5 1007.2 1001.0 1001.2 1005.2 1008.6 1009.4 1010.1 1012.0 1007.7 MAX. QFE PRESSURE IN HPA 1022.8 1017.7 1023.7 1014.7 1021.6 1011.1 1011.0 1013.3 1018.9 1022.4 1022.5 1020.9 1023.7 DAY 27 16 9 30 2 7 12 31 29 15 3 3 MIN. QFE PRESSURE IN HPA 997.1 997.1 992.8 997.7 993.3 993.0 995.2 999.4 1002.6 998.8 995.5 1000.4 992.8 DAY 31 19 31 13 10 28 24 24 7 24 22 15 MEAN QNH PRESSURE IN HPA 1015.6 1011.4 1014.5 1010.0 1010.7 1004.5 1004.7 1008.7 1012.1 1012.9 1013.6 1015.5 1011.2 MAX. QNH PRESSURE IN HPA 1026.4 1021.3 1027.3 1018.2 1025.2 1014.6 1014.5 1016.8 1022.5 1026.0 1026.1 1024.5 1027.3 DAY 27 16 9 30 2 7 12 31 29 15 3 3 MIN. QNH PRESSURE IN HPA 1000.6 1000.6 996.3 1001.2 996.8 996.5 998.7 1002.9 1006.1 1002.3 999.0 1003.9 996.3 DAY 31 19 31 13 10 28 24 24 7 24 22 15 MEAN QFF PRESSURE IN HPA 1016.1 1011.9 1014.8 1010.3 1010.9 1004.7 1004.8 1008.9 1012.3 1013.2 1014.0 1016.0 1011.5 MAX. QFF PRESSURE IN HPA 1026.9 1021.7 1027.7 1018.6 1025.5 1014.9 1014.8 1017.0 1022.7 1026.3 1026.4 1024.9 1027.7 DAY 27 16 9 30 2 7 12 31 29 15 4 3 MIN. QFF PRESSURE IN HPA 1001.0 1000.9 996.6 1001.4 997.0 996.6 998.7 1003.0 1006.2 1002.6 999.3 1004.2 996.6 DAY 31 19 31 13 10 28 24 24 7 24 22 15 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1012.1 1008.2 1011.3 1007.2 1007.7 1001.4 1002.0 1006.0 1009.0 1009.7 1010.4 1012.1 1008.1 MAX. QFE PRESSURE IN HPA 1023.3 1018.2 1023.7 1015.7 1022.4 1011.1 1011.5 1013.6 1018.9 1023.2 1023.4 1019.8 1023.7 DAY 27 15 9 30 2 7 12 31 29 15 3 2 MIN. QFE PRESSURE IN HPA 998.3 996.8 994.5 998.8 995.7 994.2 996.7 999.4 1001.3 998.5 995.0 1000.4 994.2 DAY 1 19 31 21 9 28 9 24 25 26 22 15 MEAN QNH PRESSURE IN HPA 1015.6 1011.7 1014.8 1010.7 1011.3 1004.9 1005.5 1009.6 1012.6 1013.2 1014.0 1015.6 1011.6 MAX. QNH PRESSURE IN HPA 1026.9 1021.8 1027.3 1019.2 1026.0 1014.6 1015.0 1017.1 1022.5 1026.8 1027.0 1023.4 1027.3 DAY 27 15 9 30 2 7 12 31 29 15 3 2 MIN. QNH PRESSURE IN HPA 1001.8 1000.3 998.0 1002.3 999.2 997.7 1000.2 1002.9 1004.8 1002.0 998.5 1003.9 997.7 DAY 1 19 31 21 9 28 9 24 25 26 22 15 MEAN QFF PRESSURE IN HPA 1016.1 1012.2 1015.2 1011.0 1011.5 1005.0 1005.7 1009.7 1012.8 1013.5 1014.3 1016.0 1011.9 MAX. QFF PRESSURE IN HPA 1027.4 1022.2 1027.7 1019.6 1026.3 1014.9 1015.3 1017.3 1022.8 1027.2 1027.3 1023.8 1027.7 DAY 27 15 9 30 2 7 12 31 29 15 3 2 MIN. QFF PRESSURE IN HPA 1002.2 1000.6 998.3 1002.6 999.4 997.8 1000.3 1003.0 1005.0 1002.3 998.8 1004.3 997.8 DAY 1 19 31 21 10 28 9 24 25 26 22 15 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1013.2 1009.0 1012.3 1007.9 1008.3 1001.7 1002.3 1006.6 1009.7 1010.4 1011.4 1013.0 1008.8 MAX. QFE PRESSURE IN HPA 1023.7 1020.1 1024.3 1017.2 1023.2 1011.3 1012.0 1014.0 1020.4 1024.2 1025.4 1023.0 1025.4 DAY 27 15 9 30 2 6 12 31 29 15 3 2 MIN. QFE PRESSURE IN HPA 998.5 998.1 995.0 999.1 995.2 995.3 996.5 999.3 1001.1 997.2 994.6 1002.0 994.6 DAY 30 7 30 21 9 18 9 24 25 26 22 15 MEAN QNH PRESSURE IN HPA 1016.8 1012.5 1015.8 1011.4 1011.8 1005.2 1005.8 1010.2 1013.2 1013.9 1014.9 1016.5 1012.3 MAX. QNH PRESSURE IN HPA 1027.3 1023.7 1027.9 1020.7 1026.8 1014.8 1015.5 1017.5 1024.0 1027.8 1029.0 1026.6 1029.0 DAY 27 15 9 30 2 6 12 31 29 15 3 2 MIN. QNH PRESSURE IN HPA 1002.0 1001.6 998.5 1002.6 998.7 998.8 1000.0 1002.8 1004.6 1000.7 998.1 1005.5 998.1 DAY 30 7 30 21 9 18 9 24 25 26 22 15 MEAN QFF PRESSURE IN HPA 1017.2 1013.0 1016.2 1011.7 1012.1 1005.4 1006.0 1010.3 1013.4 1014.2 1015.3 1017.0 1012.6 MAX. QFF PRESSURE IN HPA 1027.8 1024.1 1028.3 1021.1 1027.1 1015.1 1015.8 1017.7 1024.2 1028.2 1029.3 1027.0 1029.3 DAY 27 15 9 30 2 6 12 31 29 15 3 2 MIN. QFF PRESSURE IN HPA 1002.5 1002.0 998.8 1002.8 998.9 998.9 1000.1 1002.9 1004.8 1001.0 998.3 1005.9 998.3 DAY 30 7 30 21 9 18 9 24 25 26 22 15 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1012.3 1008.2 1011.5 1007.0 1007.6 1001.0 1001.4 1005.8 1008.6 1009.2 1010.3 1011.9 1007.9 MAX. QFE PRESSURE IN HPA 1022.9 1020.3 1023.3 1017.2 1022.3 1011.2 1011.4 1012.8 1019.3 1023.8 1024.5 1023.0 1024.5 DAY 27 15 9 30 2 6 12 31 29 15 3 2 MIN. QFE PRESSURE IN HPA 996.1 997.2 993.6 996.7 993.9 993.9 995.1 997.7 1000.8 996.7 992.9 1000.5 992.9 DAY 30 7 30 12 9 18 9 24 25 24 22 14 MEAN QNH PRESSURE IN HPA 1015.8 1011.7 1015.0 1010.5 1011.1 1004.5 1004.9 1009.3 1012.1 1012.8 1013.8 1015.4 1011.4 MAX. QNH PRESSURE IN HPA 1026.5 1023.9 1026.9 1020.7 1025.9 1014.7 1014.9 1016.3 1022.9 1027.4 1028.1 1026.6 1028.1 DAY 27 15 9 30 2 6 12 31 29 15 3 2 MIN. QNH PRESSURE IN HPA 999.6 1000.7 997.1 1000.2 997.4 997.4 998.6 1001.2 1004.3 1000.2 996.4 1004.0 996.4 DAY 30 7 30 12 9 18 9 24 25 24 22 14 MEAN QFF PRESSURE IN HPA 1016.3 1012.2 1015.4 1010.8 1011.4 1004.6 1005.0 1009.5 1012.3 1013.0 1014.1 1015.8 1011.7 MAX. QFF PRESSURE IN HPA 1027.0 1024.3 1027.3 1021.1 1026.2 1015.0 1015.1 1016.5 1023.1 1027.8 1028.4 1027.0 1028.4 DAY 27 15 9 30 2 6 12 31 29 15 3 2 MIN. QFF PRESSURE IN HPA 1000.1 1001.1 997.4 1000.4 997.6 997.5 998.7 1001.3 1004.5 1000.4 996.6 1004.3 996.6 DAY 30 7 30 12 9 18 9 24 25 24 22 14 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1011.1 1006.7 1009.8 1005.8 1006.3 999.6 1000.0 1004.4 1007.3 1008.1 1009.4 1011.1 1006.6 MAX. QFE PRESSURE IN HPA 1021.9 1019.1 1022.0 1016.9 1020.6 1010.9 1010.2 1011.4 1018.0 1022.7 1023.3 1022.9 1023.3 DAY 26 15 8 30 2 6 12 30 29 15 3 2 MIN. QFE PRESSURE IN HPA 994.7 996.9 991.2 994.6 993.0 992.1 992.7 995.6 1000.1 994.7 991.4 999.9 991.2 DAY 30 7 30 22 9 18 9 24 6 24 22 14 MEAN QNH PRESSURE IN HPA 1014.7 1010.2 1013.3 1009.3 1009.8 1003.1 1003.5 1007.9 1010.8 1011.6 1012.9 1014.7 1010.1 MAX. QNH PRESSURE IN HPA 1025.5 1022.7 1025.6 1020.4 1024.2 1014.4 1013.7 1014.9 1021.6 1026.3 1026.9 1026.5 1026.9 DAY 26 15 8 30 2 6 12 30 29 15 3 2 MIN. QNH PRESSURE IN HPA 998.2 1000.4 994.7 998.1 996.5 995.6 996.2 999.1 1003.6 998.2 994.9 1003.4 994.7 DAY 30 7 30 22 9 18 9 24 6 24 22 14 MEAN QFF PRESSURE IN HPA 1015.1 1010.7 1013.7 1009.6 1010.0 1003.2 1003.6 1008.1 1011.0 1011.8 1013.3 1015.1 1010.4 MAX. QFF PRESSURE IN HPA 1026.0 1023.1 1026.0 1020.8 1024.5 1014.7 1013.9 1015.1 1021.8 1026.7 1027.2 1026.9 1027.2 DAY 26 15 8 30 2 6 12 30 29 15 3 2 MIN. QFF PRESSURE IN HPA 998.6 1000.8 995.0 998.3 996.7 995.7 996.3 999.2 1003.7 998.4 995.1 1003.7 995.0 DAY 30 7 30 22 9 18 9 24 6 24 22 14 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1011.8 1007.2 1009.7 1005.9 1006.0 999.5 999.7 1004.2 1007.4 1008.6 1010.1 1011.8 1006.8 MAX. QFE PRESSURE IN HPA 1022.4 1019.0 1022.5 1017.4 1020.2 1011.1 1010.0 1011.8 1018.2 1022.9 1023.8 1023.7 1023.8 DAY 26 15 8 30 2 6 11 30 29 15 3 2 MIN. QFE PRESSURE IN HPA 995.2 997.9 991.3 993.9 992.1 991.6 992.3 995.8 999.9 995.9 992.3 1000.2 991.3 DAY 30 6 30 12 9 18 9 24 6 24 22 14 MEAN QNH PRESSURE IN HPA 1015.3 1010.7 1013.3 1009.5 1009.5 1003.0 1003.2 1007.7 1010.9 1012.1 1013.6 1015.3 1010.3 MAX. QNH PRESSURE IN HPA 1026.0 1022.6 1026.1 1020.9 1023.8 1014.6 1013.5 1015.3 1021.8 1026.5 1027.4 1027.3 1027.4 DAY 26 15 8 30 2 6 11 30 29 15 3 2 MIN. QNH PRESSURE IN HPA 998.7 1001.4 994.8 997.4 995.6 995.1 995.8 999.3 1003.4 999.4 995.8 1003.7 994.8 DAY 30 6 30 12 9 18 9 24 6 24 22 14 MEAN QFF PRESSURE IN HPA 1015.8 1011.1 1013.7 1009.8 1009.8 1003.1 1003.3 1007.8 1011.1 1012.4 1014.0 1015.8 1010.6 MAX. QFF PRESSURE IN HPA 1026.5 1023.0 1026.5 1021.3 1024.1 1014.9 1013.8 1015.5 1022.1 1026.9 1027.7 1027.7 1027.7 DAY 26 15 8 30 2 6 11 30 29 15 3 2 MIN. QFF PRESSURE IN HPA 999.2 1001.8 995.1 997.6 995.8 995.2 995.9 999.4 1003.5 999.6 996.1 1004.1 995.1 DAY 30 18 30 12 9 18 9 24 6 24 22 14 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1012.4 1008.1 1010.7 1007.2 1007.0 1001.1 1001.2 1005.5 1008.8 1009.5 1010.5 1012.3 1007.9 MAX. QFE PRESSURE IN HPA 1023.1 1019.1 1023.7 1018.9 1021.5 1010.9 1011.5 1014.0 1019.1 1022.3 1023.7 1023.9 1023.9 DAY 26 15 8 30 1 6 11 30 28 15 3 2 MIN. QFE PRESSURE IN HPA 995.8 997.4 992.4 995.2 993.2 993.0 994.7 998.7 1001.2 997.5 992.2 1000.4 992.2 DAY 30 18 30 12 9 27 9 18 6 24 22 14 MEAN QNH PRESSURE IN HPA 1016.0 1011.6 1014.2 1010.8 1010.5 1004.6 1004.7 1009.1 1012.3 1013.1 1014.0 1015.8 1011.4 MAX. QNH PRESSURE IN HPA 1026.7 1022.7 1027.3 1022.5 1025.1 1014.4 1015.0 1017.5 1022.7 1025.9 1027.3 1027.5 1027.5 DAY 26 15 8 30 1 6 11 30 28 15 3 2 MIN. QNH PRESSURE IN HPA 999.3 1000.9 995.9 998.7 996.7 996.5 998.2 1002.2 1004.7 1001.0 995.7 1003.9 995.7 DAY 30 18 30 12 9 27 9 18 6 24 22 14 MEAN QFF PRESSURE IN HPA 1016.4 1012.1 1014.6 1011.1 1010.8 1004.8 1004.8 1009.2 1012.5 1013.3 1014.4 1016.2 1011.7 MAX. QFF PRESSURE IN HPA 1027.2 1023.1 1027.7 1022.8 1025.4 1014.7 1015.3 1017.7 1022.9 1026.3 1027.6 1027.9 1027.9 DAY 26 15 8 30 1 6 11 30 28 15 3 2 MIN. QFF PRESSURE IN HPA 999.8 1001.3 996.2 998.9 996.9 996.6 998.3 1002.3 1004.9 1001.2 996.0 1004.3 996.0 DAY 30 18 30 12 9 27 9 18 6 24 22 14 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1012.4 1008.2 1010.7 1007.4 1006.9 1001.4 1001.3 1005.6 1008.7 1009.6 1010.4 1012.1 1007.9 MAX. QFE PRESSURE IN HPA 1022.8 1018.7 1023.7 1018.9 1021.6 1012.1 1011.0 1013.9 1019.1 1021.8 1023.1 1022.2 1023.7 DAY 26 15 8 30 1 6 11 30 28 14 3 2 MIN. QFE PRESSURE IN HPA 996.3 997.1 992.5 996.0 993.1 993.2 995.2 999.1 1001.7 999.7 994.1 1000.4 992.5 DAY 30 18 30 12 9 27 23 18 6 23 22 14 MEAN QNH PRESSURE IN HPA 1016.0 1011.7 1014.2 1010.9 1010.4 1004.9 1004.8 1009.1 1012.2 1013.1 1013.9 1015.6 1011.4 MAX. QNH PRESSURE IN HPA 1026.4 1022.3 1027.3 1022.5 1025.2 1015.6 1014.5 1017.4 1022.7 1025.4 1026.7 1025.8 1027.3 DAY 26 15 8 30 1 6 11 30 28 14 3 2 MIN. QNH PRESSURE IN HPA 999.8 1000.6 996.0 999.5 996.6 996.7 998.7 1002.6 1005.2 1003.2 997.6 1003.9 996.0 DAY 30 18 30 12 9 27 23 18 6 23 22 14 MEAN QFF PRESSURE IN HPA 1016.4 1012.2 1014.6 1011.2 1010.6 1005.0 1004.9 1009.2 1012.4 1013.4 1014.2 1016.0 1011.7 MAX. QFF PRESSURE IN HPA 1026.9 1022.7 1027.7 1022.8 1025.5 1015.9 1014.8 1017.6 1022.9 1025.7 1027.0 1026.2 1027.7 DAY 26 15 8 30 1 6 11 30 28 14 3 2 MIN. QFF PRESSURE IN HPA 1000.2 1000.9 996.3 999.7 996.8 996.8 998.8 1002.7 1005.3 1003.4 997.8 1004.2 996.3 DAY 30 18 30 12 9 27 23 18 6 23 22 14 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.2 2.0 7.4 12.4 18.5 22.8 26.1 25.7 21.2 13.9 4.1 3.7 13.3 MINIMUN AIR TEMPERATURE (C) -1.7 -1.6 1.8 6.9 12.3 16.7 19.3 19.7 15.9 8.7 2.3 0.1 8.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 2 10 13 2 0 0 0 27 DAYS WITH MINIMUM TEMP. <=-4 5 6 1 0 0 0 0 0 0 0 0 0 12 DAYS WITH FREEZING MIN.<= 0 26 20 10 0 0 0 0 0 0 0 10 18 84 TEMPERATURE RECORDS LOWEST(C) -5.4 -8.4 -4.2 0.4 3.5 10.0 15.2 13.4 9.4 2.6 -3.4 -3.2 -8.4 DAY 1 18 13 23 9 3 8 25 25 30 17 7 MAXIMUM AIR TEMPERATURE (C) 7.3 6.2 13.9 18.6 24.7 29.3 32.5 32.4 27.2 20.2 6.7 8.6 19.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 4 13 26 26 9 0 0 0 78 DAYS WITH MAXIMUM TEMP. <= 0 0 2 0 0 0 0 0 0 0 0 0 1 3 TEMPERATURE RECORDS HIGHEST(C) 21.0 15.6 24.2 26.2 31.8 35.6 37.2 36.0 32.2 26.6 16.2 20.4 37.2 DAY 28 27 29 17 29 26 24 12 14 19 9 18 DIF. BETWEEN (MAX.-MIN.) (C) 9.0 7.8 12.1 11.7 12.4 12.6 13.2 12.7 11.3 11.5 4.4 8.5 10.6 MEAN DAILY TEMP. (MDT) (C) 2.8 2.3 7.8 12.7 18.5 23.0 25.9 26.1 21.6 14.5 4.5 4.3 13.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 15.4 74.2 152.4 157.1 48.5 0.0 0.0 0.0 447.8 HEATING DEG. DAYS(BASE 18 0C) 471.6 439.2 315.2 157.9 43.8 2.4 0.0 0.0 9.1 111.2 405.6 423.8 2379.7 DEWPOINT (MEAN C) -2.5 -1.4 1.7 7.8 12.7 16.1 17.0 16.9 13.6 8.1 2.2 0.3 7.7 MIXING RATIO (G/KG) 3.21 3.52 4.43 6.71 9.41 11.71 12.43 12.35 9.96 6.85 4.56 3.93 7.42 VAPOUR PRESSURE (HPA) 5.20 5.70 7.13 10.72 14.95 18.51 19.63 19.51 15.82 11.03 7.36 6.35 11.83 SATURATION DEF. (HPA) 2.36 1.63 3.89 4.26 7.38 10.40 15.28 14.57 10.32 5.51 1.10 1.90 6.55 RELATIVE HUMIDITY (MEAN %) 76 80 71 76 72 70 61 61 64 71 88 82 73 RELATIVE HUMIDITY (MAX. %) 93 96 92 94 93 93 84 85 85 89 96 95 91 RELATIVE HUMIDITY (MIN. %) 56 61 48 53 50 47 39 40 43 49 77 64 52 RELATIVE HUMIDITY (MEAN% 03UTC) 85 88 86 91 89 86 78 80 80 86 93 92 86 RELATIVE HUMIDITY (MEAN% 09UTC) 63 69 57 61 57 56 45 46 52 58 81 71 60 RELATIVE HUMIDITY (MEAN% 15UTC) 75 73 60 63 61 54 47 47 55 64 87 78 64 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 17.5 18.9 6.5 15.8 21.0 28.7 0.0 5.2 0.8 9.5 63.6 1.4 188.9 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 1 0 0 0 0 1 0 2 DAYS WITH PRECIPITATION >= 5 0 1 0 2 0 3 0 0 0 1 5 0 12 DAYS WITH PRECIPITATION >= 1 6 3 2 4 8 4 0 2 0 4 10 1 44 DAYS WITH PRECIPITATION 9 11 6 8 13 8 1 5 3 5 16 5 90 GREATEST DAILY PRECIPITATION 4.3 9.0 3.0 8.0 4.4 15.0 0.0 2.6 0.6 5.0 16.0 1.0 16.0 DAY 4 15 3 22 3 20 ** 22 24 31 13 5 DAY WITH THUNDER STORM 0 0 0 1 4 2 0 1 0 0 0 0 8 DAYS WITH SNOW OR SLEET 8 11 3 0 0 0 0 0 0 0 7 3 32 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 270 135 90 90 90 90 90 90 90 90 90 225 90 PREVAILING WIND SPEED(KNOTS) 7.9 14.5 9.5 7.9 8.1 10.0 10.8 10.4 9.1 10.4 8.6 7.7 9.5 PREVAILING WIND PERCENT 25.5 16.1 18.1 20.8 24.6 24.2 33.5 27.5 23.3 15.3 13.8 8.5 18.2 CALMS PERCENT OF WIND 35.2 41.1 31.9 30.8 28.2 37.9 22.9 49.4 58.3 72.2 72.1 77.8 46.7 NO. OF WIND OBSERVATION 247 224 248 240 248 240 227 247 240 248 240 248 2897 VECTOR WIND DIRECTION (MEAN) 242 153 132 127 110 105 101 94 90 102 115 170 117 VECTOR WIND MAGNITUDE(KNOTS) 3.1 2.3 1.5 1.9 2.5 2.8 5.7 3.4 2.5 1.5 1.7 0.8 1.9 WIND STEADINESES (MEAN %) 62.0 43.4 27.3 34.5 46.3 58.3 75.0 77.3 73.5 60.0 77.3 50.0 43.2 WIND SPEED (MEAN KNOTS) 5.0 5.3 5.5 5.5 5.4 4.8 7.6 4.4 3.4 2.5 2.2 1.6 4.4 FASTEST WIND DIRECTION 240 130 120 300 120 110 120 100 150 100 120 240 120 FASTEST WIND SPEED (KNOTS) 25 25 29 25 19 23 27 23 23 25 17 16 29 DAY 28 15 9 21 2 18 16 15 8 19 10 22 DAYS WITH SKY CLEAR (0-2)/8 9 7 16 7 8 14 21 17 16 18 1 13 147 DAYS WITH P.CLOUDY (3-6)/8 11 5 6 10 13 9 7 11 10 5 9 6 102 DAYS WITH CLOUDY (7-8)/8 11 16 9 13 10 7 2 3 4 8 20 12 115 DAYS WITH VISIBILITY =< 2 KM 5 7 9 3 1 1 0 0 1 2 4 9 42 DURATION OF SUNSHINE HOURS 125.0 101.1 190.3 135.4 207.8 255.4 268.3 270.9 209.3 179.9 49.2 113.2 2105.8 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1013.4 1014.5 1009.4 1005.4 1004.6 1002.2 1002.5 1003.2 1004.5 1013.1 1014.0 1012.2 1008.2 MAX. QFE PRESSURE IN HPA 1033.7 1029.6 1023.1 1015.5 1019.9 1015.6 1010.7 1009.9 1016.3 1022.3 1026.0 1020.8 1033.7 DAY-HOUR 6- 6 9- 6 16- 6 23- 6 9- 6 22- 6 27- 6 24- 9 22- 6 20- 6 25- 6 8- 6 MIN. QFE PRESSURE IN HPA 993.2 1000.1 991.6 992.8 994.4 991.4 992.1 992.7 994.5 997.0 995.3 1002.8 991.4 DAY-HOUR 28-15 6-15 8-12 8-12 13- 0 16-15 24-15 12-12 3-12 1- 6 10-12 13-12 MEAN QNH PRESSURE IN HPA 1016.9 1018.0 1012.9 1008.9 1008.1 1005.7 1006.0 1006.7 1008.0 1016.6 1017.6 1015.7 1011.8 MAX. QNH PRESSURE IN HPA 1037.3 1033.2 1026.7 1019.0 1023.5 1019.1 1014.2 1013.4 1019.8 1025.9 1029.6 1024.4 1037.3 DAY-HOUR 6- 6 9- 6 16- 6 23- 6 9- 6 22- 6 27- 6 24- 9 22- 6 20- 6 25- 6 8- 6 MIN. QNH PRESSURE IN HPA 996.7 1003.6 995.1 996.3 997.9 994.9 995.6 996.2 998.0 1000.5 998.8 1006.3 994.9 DAY-HOUR 28-15 6-15 8-12 8-12 13- 0 16-15 24-15 12-12 3-12 1- 6 10-12 13-12 MEAN QFF PRESSURE IN HPA 1017.4 1018.4 1013.3 1009.2 1008.3 1005.8 1006.3 1006.8 1008.2 1016.9 1018.0 1016.1 1012.1 MAX. QFF PRESSURE IN HPA 1037.8 1033.7 1027.1 1019.4 1023.8 1019.3 1014.4 1013.6 1020.1 1026.1 1030.1 1024.8 1037.8 DAY-HOUR 6- 6 9- 9 16- 6 23- 6 9- 6 22- 6 27- 6 24- 9 22- 6 20- 6 25- 6 8- 6 MIN. QFF PRESSURE IN HPA 997.0 1004.0 995.4 996.5 998.1 995.0 995.7 996.3 998.1 1000.7 999.1 1006.7 995.0 DAY-HOUR 28-15 6-15 8-12 8-12 13- 0 16-15 24-15 12-12 3-12 1- 6 10-12 13-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1013.2 1014.4 1009.3 1005.5 1004.4 1002.6 1002.9 1003.0 1004.2 1012.4 1014.1 1012.6 1008.2 MAX. QFE PRESSURE IN HPA 1031.7 1026.0 1020.8 1014.0 1019.2 1014.4 1008.9 1007.2 1014.3 1020.1 1025.2 1020.7 1031.7 DAY 6 9 16 1 9 22 27 3 22 20 21 20 MIN. QFE PRESSURE IN HPA 996.1 1004.6 995.4 996.2 994.4 996.9 995.9 994.8 995.1 998.8 998.0 1004.0 994.4 DAY 29 21 8 11 13 16 24 12 14 1 10 5 MEAN QNH PRESSURE IN HPA 1016.8 1018.0 1012.8 1009.0 1007.9 1006.1 1006.4 1006.5 1007.7 1016.0 1017.6 1016.1 1011.7 MAX. QNH PRESSURE IN HPA 1035.3 1029.6 1024.4 1017.5 1022.8 1017.9 1012.4 1010.7 1017.8 1023.7 1028.8 1024.3 1035.3 DAY 6 9 16 1 9 22 27 3 22 20 21 20 MIN. QNH PRESSURE IN HPA 999.6 1008.1 998.9 999.7 997.9 1000.4 999.4 998.3 998.6 1002.3 1001.5 1007.5 997.9 DAY 29 21 8 11 13 16 24 12 14 1 10 5 MEAN QFF PRESSURE IN HPA 1017.2 1018.4 1013.1 1009.3 1008.1 1006.3 1006.5 1006.6 1007.9 1016.2 1018.0 1016.5 1012.0 MAX. QFF PRESSURE IN HPA 1035.8 1030.0 1024.8 1017.8 1023.1 1018.2 1012.5 1010.8 1018.1 1023.9 1029.3 1024.7 1035.8 DAY 6 9 16 1 9 22 27 3 22 20 26 20 MIN. QFF PRESSURE IN HPA 999.9 1008.6 999.3 999.9 998.1 1000.5 999.5 998.4 998.7 1002.4 1001.8 1008.0 998.1 DAY 29 21 8 11 13 16 24 12 14 1 10 5 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1013.3 1014.7 1009.6 1005.8 1004.9 1002.9 1003.7 1003.4 1004.2 1012.6 1014.2 1012.0 1008.4 MAX. QFE PRESSURE IN HPA 1032.8 1027.5 1021.7 1015.2 1019.7 1015.3 1009.6 1008.3 1015.4 1021.2 1025.3 1020.7 1032.8 DAY 6 9 14 23 9 22 27 3 22 20 21 20 MIN. QFE PRESSURE IN HPA 1000.0 1004.2 993.9 995.3 998.4 996.2 996.0 995.5 995.4 997.2 997.2 1003.2 993.9 DAY 8 21 8 11 13 28 24 12 14 1 10 5 MEAN QNH PRESSURE IN HPA 1016.8 1018.2 1013.1 1009.3 1008.4 1006.4 1007.2 1006.9 1007.7 1016.1 1017.7 1015.6 1011.9 MAX. QNH PRESSURE IN HPA 1036.4 1031.1 1025.3 1018.7 1023.3 1018.8 1013.1 1011.8 1018.9 1024.8 1028.9 1024.3 1036.4 DAY 6 9 14 23 9 22 27 3 22 20 21 20 MIN. QNH PRESSURE IN HPA 1003.5 1007.7 997.4 998.8 1001.9 999.7 999.5 999.0 998.9 1000.7 1000.7 1006.7 997.4 DAY 8 21 8 11 13 28 24 12 14 1 10 5 MEAN QFF PRESSURE IN HPA 1017.3 1018.4 1013.5 1009.6 1008.6 1006.6 1007.3 1007.0 1007.9 1016.4 1018.1 1016.0 1012.2 MAX. QFF PRESSURE IN HPA 1036.9 1028.7 1025.7 1019.2 1023.6 1019.1 1013.3 1012.0 1019.3 1025.0 1029.3 1024.7 1036.9 DAY 6 16 16 23 9 22 27 3 22 20 21 20 MIN. QFF PRESSURE IN HPA 1003.9 1008.2 997.7 999.0 1002.1 999.8 999.6 999.1 999.0 1000.9 1001.0 1007.2 997.7 DAY 28 21 8 11 13 28 24 12 14 1 10 5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1014.4 1015.7 1010.8 1006.5 1005.5 1003.5 1003.8 1004.1 1005.0 1013.6 1014.8 1012.5 1009.2 MAX. QFE PRESSURE IN HPA 1033.7 1029.6 1023.1 1015.5 1019.9 1015.6 1010.7 1008.4 1016.3 1022.3 1026.0 1020.8 1033.7 DAY 6 9 16 23 9 22 27 3 22 20 25 8 MIN. QFE PRESSURE IN HPA 999.1 1004.4 995.3 996.2 999.0 996.3 995.9 995.3 996.8 997.0 997.3 1004.6 995.3 DAY 28 21 8 8 13 16 24 12 3 1 10 13 MEAN QNH PRESSURE IN HPA 1017.9 1019.3 1014.3 1010.0 1009.0 1007.0 1007.3 1007.6 1008.5 1017.2 1018.4 1016.1 1012.7 MAX. QNH PRESSURE IN HPA 1037.3 1033.2 1026.7 1019.0 1023.5 1019.1 1014.2 1011.9 1019.8 1025.9 1029.6 1024.4 1037.3 DAY 6 9 16 23 9 22 27 3 22 20 25 8 MIN. QNH PRESSURE IN HPA 1002.6 1007.9 998.8 999.7 1002.5 999.8 999.4 998.8 1000.3 1000.5 1000.8 1008.1 998.8 DAY 28 21 8 8 13 16 24 12 3 1 10 13 MEAN QFF PRESSURE IN HPA 1018.4 1019.7 1014.7 1010.3 1009.2 1007.2 1007.7 1007.7 1008.7 1017.5 1018.8 1016.5 1013.0 MAX. QFF PRESSURE IN HPA 1037.8 1033.7 1027.1 1019.4 1023.8 1019.3 1014.4 1012.0 1020.1 1026.1 1030.1 1024.8 1037.8 DAY 6 9 16 23 9 22 27 3 22 20 25 8 MIN. QFF PRESSURE IN HPA 1002.9 1008.4 999.1 1000.0 1002.7 999.9 999.5 998.8 1000.4 1000.7 1001.1 1008.6 998.8 DAY 28 21 8 8 13 16 24 12 3 1 10 13 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1013.6 1015.0 1009.8 1005.8 1005.0 1002.8 1002.8 1003.8 1005.2 1013.8 1014.0 1012.1 1008.6 MAX. QFE PRESSURE IN HPA 1032.2 1029.6 1022.3 1013.8 1018.6 1014.6 1010.5 1009.9 1016.3 1020.2 1024.0 1019.6 1032.2 DAY 6 9 14 24 9 22 27 24 22 20 25 3 MIN. QFE PRESSURE IN HPA 996.3 1002.9 993.5 994.6 998.3 994.6 994.0 994.2 996.6 1002.1 996.0 1003.6 993.5 DAY 28 21 8 11 15 16 24 12 3 1 10 13 MEAN QNH PRESSURE IN HPA 1017.1 1018.6 1013.3 1009.3 1008.5 1006.3 1006.3 1007.3 1008.7 1017.3 1017.5 1015.6 1012.1 MAX. QNH PRESSURE IN HPA 1035.8 1033.2 1025.9 1017.3 1022.2 1018.1 1014.0 1013.4 1019.8 1023.8 1027.6 1023.2 1035.8 DAY 6 9 14 24 9 22 27 24 22 20 25 3 MIN. QNH PRESSURE IN HPA 999.8 1006.4 997.0 998.1 1001.8 998.1 997.5 997.7 1000.1 1005.6 999.5 1007.1 997.0 DAY 28 21 8 11 15 16 24 12 3 1 10 13 MEAN QFF PRESSURE IN HPA 1017.5 1019.0 1013.7 1009.6 1008.8 1006.4 1006.7 1007.4 1008.9 1017.6 1018.0 1016.0 1012.5 MAX. QFF PRESSURE IN HPA 1036.3 1033.7 1026.4 1017.7 1022.5 1018.3 1014.2 1013.6 1020.1 1024.0 1028.1 1023.7 1036.3 DAY 6 9 14 24 9 22 27 24 22 20 25 3 MIN. QFF PRESSURE IN HPA 1000.1 1006.8 997.3 998.3 1002.0 998.2 997.6 997.7 1000.2 1005.8 999.8 1007.6 997.3 DAY 28 21 8 11 15 16 24 12 3 1 10 13 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1012.4 1013.5 1008.4 1004.3 1003.9 1001.2 1001.4 1002.4 1004.2 1012.9 1013.3 1011.6 1007.5 MAX. QFE PRESSURE IN HPA 1030.6 1028.1 1021.2 1012.4 1017.1 1012.4 1008.8 1008.1 1015.3 1019.8 1024.1 1017.9 1030.6 DAY 6 9 14 24 9 22 27 24 22 6 25 8 MIN. QFE PRESSURE IN HPA 993.4 1002.4 991.6 992.8 996.4 993.2 992.2 992.7 994.5 1001.7 995.3 1002.8 991.6 DAY 28 6 8 8 15 28 24 12 3 28 10 13 MEAN QNH PRESSURE IN HPA 1016.0 1017.0 1011.9 1007.8 1007.4 1004.7 1004.9 1005.9 1007.7 1016.5 1016.9 1015.2 1011.0 MAX. QNH PRESSURE IN HPA 1034.2 1031.7 1024.8 1015.9 1020.6 1015.9 1012.3 1011.6 1018.8 1023.4 1027.7 1021.5 1034.2 DAY 6 9 14 24 9 22 27 24 22 6 25 8 MIN. QNH PRESSURE IN HPA 996.9 1005.9 995.1 996.3 999.9 996.7 995.7 996.2 998.0 1005.2 998.8 1006.3 995.1 DAY 28 6 8 8 15 28 24 12 3 28 10 13 MEAN QFF PRESSURE IN HPA 1016.4 1017.5 1012.4 1008.1 1007.6 1004.9 1005.2 1006.1 1007.9 1016.8 1017.3 1015.6 1011.3 MAX. QFF PRESSURE IN HPA 1034.7 1032.2 1025.2 1016.3 1021.0 1016.1 1012.4 1011.8 1019.1 1023.7 1028.2 1021.9 1034.7 DAY 6 9 14 24 9 22 27 24 22 6 25 8 MIN. QFF PRESSURE IN HPA 997.2 1006.3 995.4 996.5 1000.0 996.7 995.8 996.3 998.1 1005.5 999.1 1006.7 995.4 DAY 28 6 8 8 15 28 24 12 3 28 10 13 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1013.2 1013.8 1008.5 1004.4 1003.7 1000.5 1001.0 1002.1 1004.2 1012.9 1013.8 1012.0 1007.5 MAX. QFE PRESSURE IN HPA 1029.8 1027.9 1020.1 1011.7 1017.0 1012.6 1007.6 1007.2 1015.2 1020.0 1024.6 1018.4 1029.8 DAY 6 9 14 24 8 21 27 28 22 20 25 1 MIN. QFE PRESSURE IN HPA 993.2 1000.1 992.6 994.1 997.0 991.4 992.1 992.7 994.8 1002.0 998.0 1003.0 991.4 DAY 28 6 8 8 13 16 24 12 13 26 10 13 MEAN QNH PRESSURE IN HPA 1016.7 1017.3 1012.0 1008.0 1007.2 1004.0 1004.5 1005.6 1007.7 1016.4 1017.4 1015.6 1011.0 MAX. QNH PRESSURE IN HPA 1033.4 1031.5 1023.7 1015.2 1020.5 1016.1 1011.1 1010.7 1018.7 1023.6 1028.2 1022.0 1033.4 DAY 6 9 14 24 8 21 27 28 22 20 25 1 MIN. QNH PRESSURE IN HPA 996.7 1003.6 996.1 997.6 1000.5 994.9 995.6 996.2 998.3 1005.5 1001.5 1006.5 994.9 DAY 28 6 8 8 13 16 24 12 13 26 10 13 MEAN QFF PRESSURE IN HPA 1017.2 1017.6 1012.4 1008.3 1007.4 1004.2 1004.9 1005.7 1007.9 1016.7 1017.8 1016.0 1011.3 MAX. QFF PRESSURE IN HPA 1033.9 1032.0 1024.1 1015.6 1020.9 1016.3 1011.2 1010.9 1019.1 1023.9 1028.7 1022.5 1033.9 DAY 6 9 14 24 8 21 27 28 22 20 25 1 MIN. QFF PRESSURE IN HPA 997.0 1004.0 996.4 997.9 1000.7 995.0 995.7 996.3 998.4 1005.8 1001.8 1007.0 995.0 DAY 28 6 8 8 13 16 24 12 13 26 10 13 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1013.8 1014.5 1009.6 1005.7 1004.9 1001.6 1002.3 1003.3 1004.9 1013.3 1014.0 1012.1 1008.3 MAX. QFE PRESSURE IN HPA 1029.8 1027.4 1019.5 1013.4 1018.6 1013.7 1008.8 1007.7 1015.9 1020.8 1025.2 1018.8 1029.8 DAY 5 9 16 23 9 21 26 28 22 20 25 2 MIN. QFE PRESSURE IN HPA 994.2 1000.3 996.2 997.0 997.8 992.9 993.8 994.5 994.5 1002.0 999.0 1003.2 992.9 DAY 28 6 8 8 13 16 24 12 13 26 10 13 MEAN QNH PRESSURE IN HPA 1017.3 1018.1 1013.1 1009.3 1008.4 1005.1 1005.8 1006.8 1008.4 1016.8 1017.5 1015.6 1011.8 MAX. QNH PRESSURE IN HPA 1033.4 1031.0 1023.1 1016.9 1022.2 1017.2 1012.3 1011.2 1019.4 1024.4 1028.8 1022.4 1033.4 DAY 5 9 16 23 9 21 26 28 22 20 25 2 MIN. QNH PRESSURE IN HPA 997.7 1003.8 999.7 1000.5 1001.3 996.4 997.3 998.0 998.0 1005.5 1002.5 1006.7 996.4 DAY 28 6 8 8 13 16 24 12 13 26 10 13 MEAN QFF PRESSURE IN HPA 1017.8 1018.3 1013.5 1009.6 1008.6 1005.2 1006.0 1006.9 1008.6 1017.1 1018.0 1016.1 1012.1 MAX. QFF PRESSURE IN HPA 1033.9 1031.5 1023.5 1017.3 1022.5 1017.5 1012.5 1011.3 1019.7 1024.7 1029.3 1022.9 1033.9 DAY 5 9 16 23 9 21 26 28 22 20 25 2 MIN. QFF PRESSURE IN HPA 998.0 1004.2 1000.0 1000.8 1001.5 996.5 997.4 998.0 998.1 1005.8 1002.9 1007.1 996.5 DAY 28 6 8 8 13 16 24 12 13 26 10 13 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1013.5 1014.4 1009.5 1005.5 1004.6 1002.3 1002.8 1003.4 1004.6 1013.2 1014.3 1012.5 1008.4 MAX. QFE PRESSURE IN HPA 1030.8 1025.7 1020.0 1013.8 1019.5 1014.2 1009.1 1007.7 1015.3 1019.9 1026.0 1019.2 1030.8 DAY 5 9 15 23 8 21 26 28 22 20 25 2 MIN. QFE PRESSURE IN HPA 994.3 1002.1 996.6 997.9 997.7 996.6 994.8 994.9 995.1 1002.2 999.6 1004.0 994.3 DAY 28 6 7 8 2 26 24 12 13 26 9 4 MEAN QNH PRESSURE IN HPA 1017.0 1018.0 1013.0 1009.0 1008.1 1005.8 1006.3 1006.9 1008.1 1016.7 1017.8 1016.1 1011.9 MAX. QNH PRESSURE IN HPA 1034.4 1029.3 1023.6 1017.3 1023.1 1017.7 1012.6 1011.2 1018.8 1023.5 1029.6 1022.8 1034.4 DAY 5 9 15 23 8 21 26 28 22 20 25 2 MIN. QNH PRESSURE IN HPA 997.8 1005.6 1000.1 1001.4 1001.2 1000.1 998.3 998.4 998.6 1005.7 1003.1 1007.5 997.8 DAY 28 6 7 8 2 26 24 12 13 26 9 4 MEAN QFF PRESSURE IN HPA 1017.4 1018.5 1013.4 1009.3 1008.3 1005.9 1006.5 1007.0 1008.2 1017.0 1018.3 1016.5 1012.2 MAX. QFF PRESSURE IN HPA 1034.9 1029.8 1024.0 1017.7 1023.4 1018.0 1012.8 1011.4 1019.1 1023.8 1030.1 1023.3 1034.9 DAY 5 9 15 23 8 21 26 28 22 20 25 2 MIN. QFF PRESSURE IN HPA 998.0 1006.0 1000.5 1001.7 1001.5 1000.2 998.4 998.4 998.7 1006.0 1003.4 1008.0 998.0 DAY 28 6 7 8 2 26 24 12 13 26 9 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.1 1.2 7.9 13.9 18.5 21.5 25.7 26.2 22.1 15.5 8.9 1.8 13.9 MINIMUN AIR TEMPERATURE (C) 1.0 -2.3 3.4 8.9 13.8 15.7 19.4 20.5 15.4 10.1 5.1 -1.4 9.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 6 14 0 0 0 0 21 DAYS WITH MINIMUM TEMP. <=-4 0 9 0 0 0 0 0 0 0 0 0 4 13 DAYS WITH FREEZING MIN.<= 0 9 21 2 1 0 0 0 0 0 0 2 22 57 TEMPERATURE RECORDS LOWEST(C) -3.0 -12.0 -1.8 0.0 8.4 10.0 11.4 17.2 11.4 7.0 0.0 -6.4 -12.0 DAY 25 15 9 8 8 5 6 19 21 17 8 7 MAXIMUM AIR TEMPERATURE (C) 8.6 6.4 13.6 19.5 24.4 28.2 31.7 32.4 28.7 21.5 13.9 6.0 19.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 3 12 22 28 9 0 0 0 75 DAYS WITH MAXIMUM TEMP. <= 0 0 4 0 0 0 0 0 0 0 0 0 0 4 TEMPERATURE RECORDS HIGHEST(C) 22.2 17.0 25.2 30.4 33.4 34.4 36.2 36.8 32.2 28.0 23.2 14.4 36.8 DAY 31 27 29 22 29 11 23 15 10 19 3 14 DIF. BETWEEN (MAX.-MIN.) (C) 7.6 8.7 10.2 10.6 10.6 12.5 12.3 11.9 13.3 11.4 8.8 7.4 10.5 MEAN DAILY TEMP. (MDT) (C) 4.8 2.0 8.5 14.2 19.1 22.0 25.6 26.4 22.1 15.8 9.5 2.3 14.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 3.7 20.6 57.1 142.7 168.1 39.1 0.0 0.0 0.0 431.3 HEATING DEG. DAYS(BASE 18 0C) 409.1 447.6 294.5 132.8 28.6 7.8 0.0 0.0 0.0 78.9 255.2 486.6 2141.1 DEWPOINT (MEAN C) 1.3 -2.1 2.6 9.9 13.9 14.3 16.3 17.5 13.9 10.4 5.8 -1.0 8.6 MIXING RATIO (G/KG) 4.22 3.33 4.64 7.96 10.16 10.42 11.93 12.77 10.03 7.95 5.84 3.58 7.74 VAPOUR PRESSURE (HPA) 6.80 5.38 7.47 12.69 16.13 16.51 18.82 20.17 16.06 12.79 9.37 5.80 12.33 SATURATION DEF. (HPA) 1.61 1.60 3.79 4.31 6.17 10.31 15.02 14.73 11.48 5.64 2.50 1.28 6.54 RELATIVE HUMIDITY (MEAN %) 85 81 72 79 77 67 59 61 63 75 83 84 74 RELATIVE HUMIDITY (MAX. %) 97 94 91 93 95 89 81 81 87 93 95 95 91 RELATIVE HUMIDITY (MIN. %) 65 62 52 61 55 45 40 42 40 54 65 66 54 RELATIVE HUMIDITY (MEAN% 03UTC) 94 89 87 91 92 87 78 79 84 92 92 92 88 RELATIVE HUMIDITY (MEAN% 09UTC) 75 73 61 69 65 55 47 51 52 63 71 77 63 RELATIVE HUMIDITY (MEAN% 15UTC) 81 74 59 69 63 49 43 46 44 64 77 79 62 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 13.6 22.0 13.8 38.4 36.8 38.6 0.0 1.4 0.4 21.0 52.1 61.3 299.4 DAYS WITH PRECIPITATION >=10 0 1 0 2 0 1 0 0 0 1 1 2 8 DAYS WITH PRECIPITATION >= 5 0 1 1 3 2 1 0 0 0 2 4 3 17 DAYS WITH PRECIPITATION >= 1 4 5 2 4 11 7 0 1 0 3 9 9 55 DAYS WITH PRECIPITATION 11 9 10 7 15 8 1 2 1 8 11 10 93 GREATEST DAILY PRECIPITATION 4.0 12.0 8.6 14.0 8.0 24.0 0.0 1.0 0.4 11.0 14.2 20.0 24.0 DAY 6 16 12 30 16 27 ** 18 28 20 5 20 DAY WITH THUNDER STORM 0 0 0 0 1 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 0 7 0 0 0 0 0 0 0 0 0 4 11 DAYS WITH DUST 0 0 0 0 1 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 225 90 90 90 90 90 90 90 90 90 90 90 90 PREVAILING WIND SPEED(KNOTS) 6.4 11.3 13.7 8.1 11.5 11.4 6.7 7.0 6.9 7.0 6.1 7.2 8.6 PREVAILING WIND PERCENT 6.0 21.0 11.7 12.1 6.9 4.2 14.1 23.4 13.3 8.5 12.9 4.8 11.1 CALMS PERCENT OF WIND 87.5 71.0 78.2 82.5 87.1 87.5 81.5 65.7 82.5 84.7 72.1 85.1 80.5 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 176 98 105 84 102 133 89 93 88 94 104 91 99 VECTOR WIND MAGNITUDE(KNOTS) 0.4 2.6 2.2 1.2 1.2 0.4 1.2 2.2 1.1 0.7 1.0 0.5 1.2 WIND STEADINESES (MEAN %) 44.4 86.7 84.6 92.3 92.3 26.7 92.3 91.7 100.0 70.0 62.5 55.6 75.0 WIND SPEED (MEAN KNOTS) 0.9 3.0 2.6 1.3 1.3 1.5 1.3 2.4 1.1 1.0 1.6 0.9 1.6 FASTEST WIND DIRECTION 120 120 120 90 110 180 120 90 120 110 300 180 120 FASTEST WIND SPEED (KNOTS) 16 23 27 16 27 21 17 17 14 17 16 16 27 DAY 21 5 20 28 30 16 31 1 1 22 28 21 DAYS WITH SKY CLEAR (0-2)/8 6 8 8 11 12 16 23 16 23 12 7 11 153 DAYS WITH P.CLOUDY (3-6)/8 8 5 9 7 10 8 6 13 6 9 12 7 100 DAYS WITH CLOUDY (7-8)/8 17 15 14 12 9 6 2 2 1 10 11 13 112 DAYS WITH VISIBILITY =< 2 KM 17 2 2 2 6 0 0 0 1 5 4 1 40 DURATION OF SUNSHINE HOURS 47.1 ****** 125.6 145.3 220.4 241.4 ****** ****** 210.4 155.6 114.1 104.6 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1009.9 1012.8 1009.0 1006.8 1004.1 1002.4 1001.5 1003.1 1012.0 1014.2 1008.6 1014.1 1008.2 MAX. QFE PRESSURE IN HPA 1024.2 1031.0 1021.1 1021.4 1013.0 1009.0 1007.8 1009.6 1018.6 1027.0 1023.9 1027.2 1031.0 DAY-HOUR 9- 6 18- 6 1- 0 5- 0 18- 9 4- 9 9-18 7- 6 23- 6 23- 9 6-18 21-18 MIN. QFE PRESSURE IN HPA 994.6 991.6 997.0 993.0 995.8 992.0 993.4 995.4 1004.8 1002.0 996.0 998.7 991.6 DAY-HOUR 31-21 1- 3 6-21 24- 0 2- 0 15-15 20-15 10-15 27-12 14-12 26-12 4- 0 MEAN QNH PRESSURE IN HPA 1013.4 1016.4 1012.5 1010.3 1007.6 1005.8 1005.0 1006.6 1015.6 1017.8 1012.1 1017.6 1011.7 MAX. QNH PRESSURE IN HPA 1027.8 1034.6 1024.7 1025.0 1016.5 1012.5 1011.3 1013.1 1022.2 1030.6 1027.5 1030.8 1034.6 DAY-HOUR 9- 6 18- 6 1- 0 5- 0 18- 9 4- 9 9-18 7- 6 23- 6 23- 9 6-18 21-18 MIN. QNH PRESSURE IN HPA 998.1 995.1 1000.5 996.5 999.3 995.5 996.9 998.9 1008.3 1005.5 999.5 1002.2 995.1 DAY-HOUR 31-21 1- 3 6-21 24- 0 2- 0 15-15 20-15 10-15 27-12 14-12 26-12 4- 0 MEAN QFF PRESSURE IN HPA 1013.8 1016.8 1012.9 1010.6 1007.8 1006.0 1005.1 1006.7 1015.7 1018.0 1012.5 1018.1 1012.0 MAX. QFF PRESSURE IN HPA 1028.2 1035.2 1025.1 1025.4 1016.8 1012.8 1011.5 1013.3 1022.4 1030.9 1027.9 1031.3 1035.2 DAY-HOUR 9- 6 18- 6 1- 0 5- 0 18- 9 4- 9 9-21 7- 6 23- 6 23- 9 6-18 21-21 MIN. QFF PRESSURE IN HPA 998.4 995.4 1000.9 996.7 999.5 995.6 997.0 999.0 1008.4 1005.7 999.8 1002.7 995.4 DAY-HOUR 31-21 1- 3 6-21 24- 0 2- 0 15-15 20-15 10-15 27-12 14-12 26-12 4- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1010.9 1012.6 1008.8 1006.6 1003.1 1001.8 1001.6 1003.1 1012.1 1014.3 1008.5 1014.2 1008.1 MAX. QFE PRESSURE IN HPA 1022.5 1030.4 1021.1 1021.4 1010.0 1007.6 1007.1 1008.4 1017.0 1025.2 1021.4 1026.0 1030.4 DAY 9 18 1 5 18 4 10 7 14 24 7 22 MIN. QFE PRESSURE IN HPA 999.8 993.0 997.0 993.0 995.8 993.8 995.4 997.0 1005.0 1004.2 997.1 998.7 993.0 DAY 30 1 7 24 2 16 20 1 1 19 27 4 MEAN QNH PRESSURE IN HPA 1014.5 1016.1 1012.4 1010.1 1006.6 1005.3 1005.1 1006.6 1015.6 1017.8 1012.0 1017.7 1011.6 MAX. QNH PRESSURE IN HPA 1026.1 1034.0 1024.7 1025.0 1013.5 1011.1 1010.6 1011.9 1020.5 1028.8 1025.0 1029.6 1034.0 DAY 9 18 1 5 18 4 10 7 14 24 7 22 MIN. QNH PRESSURE IN HPA 1003.3 996.5 1000.5 996.5 999.3 997.3 998.9 1000.5 1008.5 1007.7 1000.6 1002.2 996.5 DAY 30 1 7 24 2 16 20 1 1 19 27 4 MEAN QFF PRESSURE IN HPA 1014.9 1016.6 1012.7 1010.4 1006.9 1005.5 1005.2 1006.7 1015.8 1018.1 1012.4 1018.2 1011.9 MAX. QFF PRESSURE IN HPA 1026.5 1034.5 1025.1 1025.4 1013.8 1011.4 1010.8 1012.1 1020.7 1029.1 1025.4 1030.1 1034.5 DAY 9 18 1 5 18 4 10 7 14 24 7 22 MIN. QFF PRESSURE IN HPA 1003.7 996.8 1000.9 996.7 999.5 997.4 999.0 1000.6 1008.6 1008.0 1000.9 1002.7 996.7 DAY 30 1 7 24 2 16 20 1 1 19 27 4 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1010.7 1012.2 1009.2 1006.6 1003.4 1002.1 1002.1 1003.7 1012.5 1014.5 1008.5 1013.8 1008.3 MAX. QFE PRESSURE IN HPA 1023.0 1030.8 1019.6 1020.2 1011.0 1007.0 1007.7 1009.0 1017.4 1025.1 1019.8 1026.0 1030.8 DAY 9 18 1 5 18 4 10 7 23 23 7 25 MIN. QFE PRESSURE IN HPA 999.0 991.6 998.4 995.0 996.0 994.8 996.4 997.0 1007.0 1004.2 997.0 998.8 991.6 DAY 31 1 7 24 1 16 20 1 1 19 26 4 MEAN QNH PRESSURE IN HPA 1014.2 1015.8 1012.7 1010.1 1006.9 1005.6 1005.6 1007.2 1016.0 1018.0 1012.0 1017.4 1011.8 MAX. QNH PRESSURE IN HPA 1026.6 1034.4 1023.2 1023.8 1014.5 1010.5 1011.2 1012.5 1020.9 1028.7 1023.4 1029.6 1034.4 DAY 9 18 1 5 18 4 10 7 23 23 7 25 MIN. QNH PRESSURE IN HPA 1002.5 995.1 1001.9 998.5 999.5 998.3 999.9 1000.5 1010.5 1007.7 1000.5 1002.3 995.1 DAY 31 1 7 24 1 16 20 1 1 19 26 4 MEAN QFF PRESSURE IN HPA 1014.6 1016.2 1013.1 1010.4 1007.1 1005.8 1005.8 1007.3 1016.2 1018.3 1012.4 1017.9 1012.1 MAX. QFF PRESSURE IN HPA 1027.0 1034.9 1023.6 1024.2 1014.8 1010.8 1011.4 1012.7 1021.1 1029.0 1023.8 1030.1 1034.9 DAY 9 18 1 5 18 4 10 8 23 23 7 25 MIN. QFF PRESSURE IN HPA 1002.9 995.4 1002.3 998.7 999.7 998.4 1000.0 1000.6 1010.7 1008.0 1000.9 1002.8 995.4 DAY 31 1 7 24 2 16 20 1 1 19 26 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1010.9 1013.3 1010.1 1007.3 1004.5 1002.9 1002.7 1004.3 1013.5 1015.4 1009.6 1014.6 1009.1 MAX. QFE PRESSURE IN HPA 1024.2 1031.0 1020.1 1019.9 1012.2 1007.9 1007.8 1009.6 1018.6 1026.8 1019.6 1026.8 1031.0 DAY 9 18 1 5 18 4 13 7 23 23 6 25 MIN. QFE PRESSURE IN HPA 999.8 993.2 997.8 995.6 997.0 995.8 997.4 998.4 1008.0 1004.4 998.0 1000.0 993.2 DAY 16 1 7 24 1 16 20 1 27 19 26 4 MEAN QNH PRESSURE IN HPA 1014.5 1016.8 1013.7 1010.8 1008.0 1006.4 1006.2 1007.8 1017.0 1019.0 1013.1 1018.2 1012.6 MAX. QNH PRESSURE IN HPA 1027.8 1034.6 1023.7 1023.5 1015.7 1011.4 1011.3 1013.1 1022.2 1030.4 1023.2 1030.4 1034.6 DAY 9 18 1 5 18 4 13 7 23 23 6 25 MIN. QNH PRESSURE IN HPA 1003.3 996.7 1001.3 999.1 1000.5 999.3 1000.9 1001.9 1011.5 1007.9 1001.5 1003.5 996.7 DAY 16 1 7 24 1 16 20 1 27 19 26 4 MEAN QFF PRESSURE IN HPA 1014.9 1017.3 1014.0 1011.1 1008.2 1006.6 1006.3 1007.9 1017.2 1019.3 1013.5 1018.7 1012.9 MAX. QFF PRESSURE IN HPA 1028.2 1035.2 1024.1 1023.9 1016.0 1011.7 1011.5 1013.3 1022.4 1030.7 1023.6 1030.9 1035.2 DAY 9 18 1 5 18 4 13 7 23 23 6 25 MIN. QFF PRESSURE IN HPA 1003.7 997.1 1001.7 999.3 1000.8 999.4 1001.0 1002.0 1011.7 1008.2 1001.9 1004.0 997.1 DAY 16 1 7 24 2 16 20 1 27 19 26 4 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1009.7 1013.1 1009.6 1007.6 1005.1 1003.3 1001.9 1003.4 1012.6 1014.7 1009.1 1014.3 1008.7 MAX. QFE PRESSURE IN HPA 1022.4 1031.0 1019.1 1020.9 1013.0 1009.0 1007.0 1009.2 1017.8 1027.0 1021.3 1026.0 1031.0 DAY 9 18 31 5 18 4 13 7 23 23 6 21 MIN. QFE PRESSURE IN HPA 997.5 997.0 997.0 996.1 996.8 995.4 996.0 998.0 1006.2 1003.8 997.0 1000.5 995.4 DAY 16 1 7 24 1 16 20 2 27 14 26 3 MEAN QNH PRESSURE IN HPA 1013.3 1016.7 1013.2 1011.1 1008.6 1006.8 1005.4 1006.9 1016.2 1018.2 1012.6 1017.8 1012.2 MAX. QNH PRESSURE IN HPA 1026.0 1034.6 1022.7 1024.5 1016.5 1012.5 1010.5 1012.7 1021.4 1030.6 1024.9 1029.6 1034.6 DAY 9 18 31 5 18 4 13 7 23 23 6 21 MIN. QNH PRESSURE IN HPA 1001.0 1000.5 1000.5 999.6 1000.3 998.9 999.5 1001.5 1009.7 1007.3 1000.5 1004.0 998.9 DAY 16 1 7 24 1 16 20 2 27 14 26 3 MEAN QFF PRESSURE IN HPA 1013.7 1017.1 1013.5 1011.4 1008.9 1007.0 1005.5 1007.0 1016.3 1018.5 1012.9 1018.3 1012.5 MAX. QFF PRESSURE IN HPA 1026.4 1035.1 1023.1 1024.8 1016.8 1012.8 1010.6 1012.9 1021.5 1030.9 1025.3 1030.1 1035.1 DAY 9 18 31 5 18 4 13 7 23 23 6 21 MIN. QFF PRESSURE IN HPA 1001.4 1000.9 1000.9 999.8 1000.5 999.0 999.6 1001.6 1009.9 1007.5 1000.8 1004.4 999.0 DAY 16 1 7 24 1 16 20 2 27 14 26 3 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1008.6 1012.1 1008.4 1006.7 1004.4 1002.3 1000.6 1001.8 1010.9 1013.3 1007.8 1013.2 1007.5 MAX. QFE PRESSURE IN HPA 1020.8 1030.0 1019.0 1019.0 1012.6 1007.9 1005.8 1008.5 1015.6 1026.0 1022.0 1025.0 1030.0 DAY 9 18 31 4 18 4 13 7 23 23 6 21 MIN. QFE PRESSURE IN HPA 996.0 999.6 998.2 995.8 996.0 993.4 995.0 996.9 1004.8 1002.0 996.0 1000.0 993.4 DAY 16 1 7 30 12 15 20 2 27 14 26 3 MEAN QNH PRESSURE IN HPA 1012.1 1015.6 1011.9 1010.2 1007.9 1005.8 1004.1 1005.3 1014.4 1016.8 1011.3 1016.7 1011.0 MAX. QNH PRESSURE IN HPA 1024.4 1033.6 1022.6 1022.6 1016.1 1011.4 1009.3 1012.0 1019.1 1029.6 1025.6 1028.6 1033.6 DAY 9 18 31 4 18 4 13 7 23 23 6 21 MIN. QNH PRESSURE IN HPA 999.5 1003.1 1001.7 999.3 999.5 996.9 998.5 1000.4 1008.3 1005.5 999.5 1003.5 996.9 DAY 16 1 7 30 12 15 20 2 27 14 26 3 MEAN QFF PRESSURE IN HPA 1012.5 1016.1 1012.3 1010.5 1008.1 1006.0 1004.2 1005.5 1014.6 1017.1 1011.7 1017.1 1011.3 MAX. QFF PRESSURE IN HPA 1024.8 1034.1 1023.0 1022.9 1016.4 1011.7 1009.4 1012.2 1019.3 1029.9 1026.0 1029.0 1034.1 DAY 9 18 31 4 18 4 13 7 23 23 6 21 MIN. QFF PRESSURE IN HPA 999.9 1003.5 1002.1 999.5 999.7 997.0 998.6 1000.5 1008.4 1005.7 999.8 1003.9 997.0 DAY 16 1 7 30 12 15 20 2 27 14 26 3 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1009.0 1012.5 1008.2 1006.2 1003.8 1001.7 1000.1 1001.5 1010.6 1013.3 1008.1 1013.8 1007.4 MAX. QFE PRESSURE IN HPA 1020.6 1029.0 1018.3 1020.1 1011.8 1007.6 1005.5 1008.1 1015.0 1026.0 1022.4 1026.2 1029.0 DAY 9 17 31 4 18 4 13 7 13 23 6 21 MIN. QFE PRESSURE IN HPA 997.2 1001.0 1001.0 994.0 996.0 992.0 993.4 995.4 1005.0 1002.0 997.0 1000.1 992.0 DAY 16 1 6 23 12 15 20 10 27 14 26 3 MEAN QNH PRESSURE IN HPA 1012.5 1016.1 1011.7 1009.7 1007.3 1005.2 1003.6 1005.0 1014.1 1016.8 1011.6 1017.3 1010.9 MAX. QNH PRESSURE IN HPA 1024.2 1032.6 1021.9 1023.7 1015.3 1011.1 1009.0 1011.6 1018.5 1029.6 1026.0 1029.8 1032.6 DAY 9 17 31 4 18 4 13 7 13 23 6 21 MIN. QNH PRESSURE IN HPA 1000.7 1004.5 1004.5 997.5 999.5 995.5 996.9 998.9 1008.5 1005.5 1000.5 1003.6 995.5 DAY 16 1 6 23 12 15 20 10 27 14 26 3 MEAN QFF PRESSURE IN HPA 1013.0 1016.6 1012.1 1010.0 1007.5 1005.4 1003.7 1005.1 1014.3 1017.1 1012.0 1017.8 1011.2 MAX. QFF PRESSURE IN HPA 1024.6 1033.1 1022.3 1024.1 1015.6 1011.4 1009.1 1011.8 1018.7 1029.9 1026.4 1030.3 1033.1 DAY 9 17 31 4 18 4 13 7 23 23 6 21 MIN. QFF PRESSURE IN HPA 1001.1 1004.9 1004.9 997.7 999.7 995.6 997.0 999.0 1008.7 1005.7 1000.9 1004.1 995.6 DAY 16 1 15 23 12 15 20 10 27 14 26 3 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1009.4 1013.2 1008.7 1006.9 1004.3 1002.4 1001.4 1003.4 1012.0 1014.2 1008.8 1014.6 1008.3 MAX. QFE PRESSURE IN HPA 1020.0 1030.0 1018.0 1020.2 1011.8 1007.9 1007.8 1009.5 1017.0 1026.0 1023.9 1027.2 1030.0 DAY 9 17 31 4 18 4 9 7 13 23 6 21 MIN. QFE PRESSURE IN HPA 996.8 1001.4 999.7 994.4 997.0 992.8 994.6 997.4 1006.6 1003.0 997.1 1000.1 992.8 DAY 31 8 6 23 1 15 20 10 7 18 26 3 MEAN QNH PRESSURE IN HPA 1012.9 1016.7 1012.2 1010.4 1007.8 1005.9 1004.9 1006.9 1015.5 1017.8 1012.3 1018.1 1011.8 MAX. QNH PRESSURE IN HPA 1023.6 1033.6 1021.6 1023.8 1015.3 1011.4 1011.3 1013.0 1020.5 1029.6 1027.5 1030.8 1033.6 DAY 9 17 31 4 18 4 9 7 13 23 6 21 MIN. QNH PRESSURE IN HPA 1000.3 1004.9 1003.2 997.9 1000.5 996.3 998.1 1000.9 1010.1 1006.5 1000.6 1003.6 996.3 DAY 31 8 6 23 1 15 20 10 7 18 26 3 MEAN QFF PRESSURE IN HPA 1013.3 1017.2 1012.6 1010.7 1008.1 1006.1 1005.0 1007.0 1015.7 1018.0 1012.7 1018.6 1012.1 MAX. QFF PRESSURE IN HPA 1024.0 1034.1 1022.0 1024.2 1015.6 1011.7 1011.4 1013.2 1020.7 1029.9 1027.9 1031.3 1034.1 DAY 9 17 31 4 18 4 9 7 13 23 6 21 MIN. QFF PRESSURE IN HPA 1000.7 1005.4 1003.6 998.1 1000.7 996.4 998.2 1001.0 1010.3 1006.8 1001.0 1004.0 996.4 DAY 31 8 6 23 1 15 20 10 27 18 26 3 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1009.7 1013.7 1009.1 1006.5 1004.1 1002.3 1001.8 1003.6 1012.3 1014.3 1008.7 1014.6 1008.4 MAX. QFE PRESSURE IN HPA 1021.4 1030.4 1017.2 1021.2 1011.0 1007.6 1007.8 1008.4 1017.0 1025.6 1023.0 1027.2 1030.4 DAY 13 17 30 4 18 3 9 6 13 23 6 21 MIN. QFE PRESSURE IN HPA 994.6 1001.6 997.0 993.2 996.6 993.6 996.4 998.3 1007.0 1003.0 997.1 999.0 993.2 DAY 31 11 6 23 1 15 19 10 7 18 26 3 MEAN QNH PRESSURE IN HPA 1013.2 1017.3 1012.6 1010.0 1007.6 1005.8 1005.3 1007.1 1015.8 1017.9 1012.2 1018.1 1011.9 MAX. QNH PRESSURE IN HPA 1025.0 1034.0 1020.7 1024.8 1014.5 1011.1 1011.3 1011.9 1020.5 1029.2 1026.6 1030.8 1034.0 DAY 13 17 30 4 18 3 9 6 13 23 6 21 MIN. QNH PRESSURE IN HPA 998.1 1005.1 1000.5 996.7 1000.1 997.1 999.9 1001.8 1010.5 1006.5 1000.6 1002.5 996.7 DAY 31 11 6 23 1 15 19 10 7 18 26 3 MEAN QFF PRESSURE IN HPA 1013.7 1017.8 1012.9 1010.3 1007.8 1006.0 1005.4 1007.2 1016.0 1018.1 1012.6 1018.6 1012.2 MAX. QFF PRESSURE IN HPA 1025.4 1034.5 1021.1 1025.2 1014.8 1011.4 1011.5 1012.1 1020.7 1029.5 1027.0 1031.3 1034.5 DAY 13 17 30 4 18 3 9 6 13 23 6 21 MIN. QFF PRESSURE IN HPA 998.4 1005.6 1000.9 996.8 1000.3 997.2 1000.0 1001.9 1010.7 1006.8 1000.9 1002.9 996.8 DAY 31 11 6 23 1 15 19 10 7 18 26 3 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.4 6.3 8.2 15.3 20.1 24.7 27.4 27.1 21.9 14.4 9.6 4.2 15.3 MINIMUN AIR TEMPERATURE (C) 0.8 2.7 3.9 9.2 12.9 17.2 21.3 21.4 16.1 10.2 4.8 -0.0 10.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 18 17 0 0 0 0 35 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 4 4 DAYS WITH FREEZING MIN.<= 0 12 5 1 0 0 0 0 0 0 0 2 16 36 TEMPERATURE RECORDS LOWEST(C) -3.0 -2.2 -0.5 3.6 7.2 10.2 17.2 18.2 9.2 4.6 -1.2 -7.2 -7.2 DAY 23 7 3 5 10 1 6 31 21 18 30 18 MAXIMUM AIR TEMPERATURE (C) 9.7 11.4 13.2 21.7 27.9 32.9 34.2 33.7 28.6 19.5 16.4 10.1 21.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 11 26 30 27 17 0 0 0 111 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 23.0 19.0 22.5 28.6 35.2 37.0 39.6 38.0 35.2 26.4 26.8 23.2 39.6 DAY 3 11 31 28 23 28 15 2 1 1 5 28 DIF. BETWEEN (MAX.-MIN.) (C) 8.9 8.7 9.3 12.5 15.0 15.7 12.9 12.3 12.5 9.3 11.6 10.1 11.6 MEAN DAILY TEMP. (MDT) (C) 5.2 7.0 8.6 15.5 20.4 25.1 27.8 27.5 22.3 14.9 10.6 5.0 15.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 30.3 123.0 209.6 203.0 77.1 0.0 0.0 0.0 643.0 HEATING DEG. DAYS(BASE 18 0C) 395.4 307.0 292.9 82.2 13.5 0.0 0.0 0.0 8.8 100.9 222.1 402.2 1825.1 DEWPOINT (MEAN C) 1.2 2.6 4.5 8.5 11.3 15.4 15.6 17.0 15.4 9.8 5.6 0.7 9.0 MIXING RATIO (G/KG) 4.17 4.62 5.30 7.08 8.54 11.20 11.34 12.37 11.16 7.68 5.84 4.09 7.78 VAPOUR PRESSURE (HPA) 6.74 7.47 8.53 11.28 13.64 17.70 17.89 19.54 17.70 12.32 9.35 6.62 12.40 SATURATION DEF. (HPA) 1.94 2.31 2.68 6.94 11.23 14.82 19.72 17.44 9.91 4.48 3.21 2.13 8.07 RELATIVE HUMIDITY (MEAN %) 82 80 80 67 62 60 51 57 70 76 79 80 70 RELATIVE HUMIDITY (MAX. %) 95 95 95 88 88 87 73 80 92 92 94 93 89 RELATIVE HUMIDITY (MIN. %) 64 61 59 45 36 35 32 35 48 55 56 63 49 RELATIVE HUMIDITY (MEAN% 03UTC) 92 93 93 86 84 84 70 78 91 90 91 87 87 RELATIVE HUMIDITY (MEAN% 09UTC) 73 73 70 53 46 48 40 44 57 62 64 69 58 RELATIVE HUMIDITY (MEAN% 15UTC) 75 70 69 54 42 42 37 42 57 71 75 79 59 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 25.3 5.7 36.2 8.5 12.2 24.6 0.0 0.6 164.4 13.3 13.2 8.2 312.2 DAYS WITH PRECIPITATION >=10 0 0 2 0 0 0 0 0 5 0 1 0 8 DAYS WITH PRECIPITATION >= 5 3 0 3 0 1 3 0 0 6 1 1 0 18 DAYS WITH PRECIPITATION >= 1 4 2 5 3 3 3 0 0 6 5 2 3 36 DAYS WITH PRECIPITATION 7 7 8 9 6 4 0 2 6 5 4 6 64 GREATEST DAILY PRECIPITATION 9.0 3.5 14.2 3.0 5.0 9.0 0.0 0.4 65.4 5.1 11.0 4.3 65.4 DAY 17 23 17 24 4 11 ** 15 26 11 11 8 DAY WITH THUNDER STORM 0 0 0 3 2 3 1 0 2 1 0 0 12 DAYS WITH SNOW OR SLEET 2 0 1 0 0 0 0 0 0 0 0 2 5 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 90 90 90 90 90 90 90 90 90 90 225 225 90 PREVAILING WIND SPEED(KNOTS) 7.8 3.9 5.9 8.8 6.1 6.2 7.8 7.5 6.3 8.6 4.6 5.7 7.1 PREVAILING WIND PERCENT 4.8 6.3 15.7 10.4 19.4 16.7 30.2 25.0 14.6 10.5 10.5 15.7 13.9 CALMS PERCENT OF WIND 80.2 74.6 66.5 56.3 56.0 61.7 47.6 57.3 70.0 78.2 71.1 69.0 65.6 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 239 248 2919 VECTOR WIND DIRECTION (MEAN) 160 292 93 111 80 66 86 91 85 84 188 205 93 VECTOR WIND MAGNITUDE(KNOTS) 0.4 0.1 1.0 0.8 1.5 1.2 2.9 2.4 1.3 0.7 0.5 0.6 0.9 WIND STEADINESES (MEAN %) 30.8 7.7 58.8 30.8 60.0 54.5 82.9 82.8 81.2 46.7 31.3 30.0 45.0 WIND SPEED (MEAN KNOTS) 1.3 1.3 1.7 2.6 2.5 2.2 3.5 2.9 1.6 1.5 1.6 2.0 2.0 FASTEST WIND DIRECTION 290 270 90 110 270 330 80 120 120 100 110 300 290 FASTEST WIND SPEED (KNOTS) 23 16 16 23 23 17 19 19 12 21 23 17 23 DAY 16 11 13 12 17 21 16 13 14 16 11 22 DAYS WITH SKY CLEAR (0-2)/8 10 6 6 12 19 18 19 22 16 14 16 15 173 DAYS WITH P.CLOUDY (3-6)/8 8 8 10 13 8 9 11 5 8 9 10 8 107 DAYS WITH CLOUDY (7-8)/8 13 14 15 5 4 3 1 4 6 8 4 8 85 DAYS WITH VISIBILITY =< 2 KM 10 6 9 1 0 2 0 0 0 2 5 1 36 DURATION OF SUNSHINE HOURS 117.8 102.0 128.5 133.9 ****** 201.9 293.8 289.1 222.7 182.2 172.0 147.2 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1013.0 1012.7 1009.2 1004.0 1007.2 1001.8 999.8 1001.8 1004.9 1011.9 1007.8 1014.8 1007.4 MAX. QFE PRESSURE IN HPA 1028.4 1022.4 1022.7 1016.0 1015.8 1009.1 1007.1 1010.0 1015.3 1028.0 1020.2 1028.2 1028.4 DAY-HOUR 6- 6 12- 6 2- 9 6-18 26- 6 1- 6 23- 6 14- 6 27- 6 17- 6 15- 9 10- 6 MIN. QFE PRESSURE IN HPA 1001.0 996.2 992.2 990.2 999.0 986.9 991.2 992.1 997.0 995.0 994.9 1001.1 986.9 DAY-HOUR 11-12 8-12 25-12 19-15 2- 0 29-12 15-15 22-15 4-15 3-15 8-12 21-18 MEAN QNH PRESSURE IN HPA 1016.5 1016.2 1012.8 1007.5 1010.8 1005.2 1003.3 1005.3 1008.4 1015.5 1011.3 1018.3 1010.9 MAX. QNH PRESSURE IN HPA 1032.0 1026.0 1026.3 1019.5 1019.3 1012.6 1010.6 1013.5 1018.8 1031.6 1023.8 1031.8 1032.0 DAY-HOUR 6- 6 12- 6 2- 9 6-18 26- 6 1- 6 23- 6 14- 6 27- 6 17- 6 15- 9 10- 6 MIN. QNH PRESSURE IN HPA 1004.5 999.7 995.7 993.7 1002.5 990.4 994.7 995.6 1000.5 998.5 998.4 1004.6 990.4 DAY-HOUR 11-12 8-12 25-12 19-15 2- 0 29-12 15-15 22-15 4-15 3-15 8-12 21-18 MEAN QFF PRESSURE IN HPA 1016.9 1016.6 1013.1 1007.8 1011.0 1005.4 1003.4 1005.4 1008.6 1015.7 1011.7 1018.8 1011.2 MAX. QFF PRESSURE IN HPA 1032.4 1026.4 1026.6 1019.9 1019.6 1012.8 1010.7 1013.7 1019.1 1032.0 1024.1 1032.2 1032.4 DAY-HOUR 6- 6 12- 6 2- 9 6-18 26- 6 1- 6 23- 6 14- 6 27- 6 17- 6 15- 9 10- 6 MIN. QFF PRESSURE IN HPA 1004.9 1000.1 996.0 993.9 1002.7 990.5 994.8 995.7 1000.6 998.7 998.7 1005.0 990.5 DAY-HOUR 11-12 8-12 25-12 19-15 2- 0 29-12 15-15 22-15 4-15 3-15 8-12 22- 6 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1012.9 1012.9 1009.2 1004.2 1007.2 1002.2 999.9 1002.1 1005.2 1011.9 1008.0 1015.2 1007.6 MAX. QFE PRESSURE IN HPA 1027.7 1020.0 1021.6 1015.4 1015.0 1008.2 1005.5 1008.7 1014.3 1024.3 1019.9 1028.0 1028.0 DAY 7 17 3 7 28 1 23 20 27 18 28 10 MIN. QFE PRESSURE IN HPA 1001.8 1001.2 998.0 992.0 999.0 990.0 993.0 995.8 998.9 1002.6 996.0 1002.0 990.0 DAY 17 9 26 19 2 29 16 12 5 4 8 22 MEAN QNH PRESSURE IN HPA 1016.4 1016.5 1012.7 1007.7 1010.7 1005.7 1003.4 1005.6 1008.7 1015.4 1011.5 1018.7 1011.1 MAX. QNH PRESSURE IN HPA 1031.3 1023.6 1025.2 1018.9 1018.5 1011.7 1009.0 1012.2 1017.8 1027.9 1023.5 1031.6 1031.6 DAY 7 17 3 7 28 1 23 20 27 18 28 10 MIN. QNH PRESSURE IN HPA 1005.3 1004.7 1001.5 995.5 1002.5 993.5 996.5 999.3 1002.4 1006.1 999.5 1005.5 993.5 DAY 17 9 26 19 2 29 16 12 5 4 8 22 MEAN QFF PRESSURE IN HPA 1016.9 1016.9 1013.1 1008.0 1010.9 1005.8 1003.5 1005.7 1008.8 1015.7 1011.8 1019.1 1011.4 MAX. QFF PRESSURE IN HPA 1031.7 1024.0 1025.6 1019.2 1018.8 1011.9 1009.1 1012.3 1018.1 1028.3 1023.8 1032.0 1032.0 DAY 7 17 3 7 28 1 23 20 27 18 28 10 MIN. QFF PRESSURE IN HPA 1005.7 1005.1 1001.8 995.7 1002.7 993.6 996.5 999.4 1002.5 1006.3 999.8 1005.9 993.6 DAY 17 9 26 19 2 29 16 12 5 4 8 22 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1012.8 1013.0 1009.5 1004.5 1007.9 1002.9 1000.8 1002.8 1005.5 1012.2 1008.1 1014.9 1007.9 MAX. QFE PRESSURE IN HPA 1027.2 1021.6 1021.6 1015.0 1015.5 1009.0 1006.1 1009.0 1014.9 1025.3 1019.3 1027.8 1027.8 DAY 7 12 3 7 28 1 23 14 27 17 28 10 MIN. QFE PRESSURE IN HPA 1001.9 1001.0 996.3 991.3 999.0 990.3 994.3 997.1 999.7 1000.3 997.0 1001.8 990.3 DAY 12 8 25 19 2 29 16 12 17 3 8 22 MEAN QNH PRESSURE IN HPA 1016.3 1016.6 1013.0 1008.0 1011.4 1006.4 1004.3 1006.3 1009.0 1015.7 1011.6 1018.4 1011.4 MAX. QNH PRESSURE IN HPA 1030.8 1025.2 1025.2 1018.5 1019.0 1012.5 1009.6 1012.5 1018.4 1028.9 1022.9 1031.4 1031.4 DAY 7 12 3 7 28 1 23 14 27 17 28 10 MIN. QNH PRESSURE IN HPA 1005.4 1004.5 999.8 994.8 1002.5 993.8 997.8 1000.6 1003.2 1003.8 1000.5 1005.3 993.8 DAY 12 8 25 19 2 29 16 12 17 3 8 22 MEAN QFF PRESSURE IN HPA 1016.8 1017.0 1013.4 1008.2 1011.6 1006.6 1004.4 1006.5 1009.2 1016.0 1012.0 1018.9 1011.7 MAX. QFF PRESSURE IN HPA 1031.2 1025.5 1025.6 1018.9 1019.3 1012.7 1009.7 1012.6 1018.7 1029.2 1023.3 1031.8 1031.8 DAY 7 12 3 7 28 1 23 14 27 17 28 10 MIN. QFF PRESSURE IN HPA 1005.8 1005.0 1000.1 995.0 1002.7 993.9 997.8 1000.7 1003.3 1004.0 1000.8 1005.7 993.9 DAY 12 8 25 19 2 29 16 12 17 3 8 22 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1013.7 1013.9 1010.4 1005.3 1008.5 1003.2 1001.3 1003.3 1006.1 1013.2 1008.8 1015.7 1008.6 MAX. QFE PRESSURE IN HPA 1028.4 1022.4 1022.2 1015.7 1015.8 1009.1 1007.1 1010.0 1015.3 1028.0 1020.0 1028.2 1028.4 DAY 6 12 2 13 26 1 23 14 27 17 15 10 MIN. QFE PRESSURE IN HPA 1002.8 1001.4 994.9 991.9 999.2 990.0 994.5 997.0 1000.2 1000.1 997.4 1001.1 990.0 DAY 12 8 25 19 2 29 16 22 17 3 11 22 MEAN QNH PRESSURE IN HPA 1017.3 1017.5 1013.9 1008.8 1012.0 1006.7 1004.8 1006.8 1009.6 1016.7 1012.3 1019.2 1012.1 MAX. QNH PRESSURE IN HPA 1032.0 1026.0 1025.8 1019.2 1019.3 1012.6 1010.6 1013.5 1018.8 1031.6 1023.6 1031.8 1032.0 DAY 6 12 2 13 26 1 23 14 27 17 15 10 MIN. QNH PRESSURE IN HPA 1006.3 1004.9 998.4 995.4 1002.7 993.5 998.0 1000.5 1003.7 1003.6 1000.9 1004.6 993.5 DAY 12 8 25 19 2 29 16 22 17 3 11 22 MEAN QFF PRESSURE IN HPA 1017.7 1017.9 1014.3 1009.1 1012.2 1006.9 1004.9 1006.9 1009.8 1017.0 1012.7 1019.7 1012.4 MAX. QFF PRESSURE IN HPA 1032.4 1026.4 1026.2 1019.6 1019.6 1012.8 1010.7 1013.7 1019.1 1032.0 1024.0 1032.2 1032.4 DAY 6 12 2 13 26 1 23 14 27 17 15 10 MIN. QFF PRESSURE IN HPA 1006.7 1005.4 998.7 995.6 1002.9 993.6 998.0 1000.6 1003.8 1003.8 1001.2 1005.0 993.6 DAY 12 8 25 19 2 29 16 22 17 3 11 22 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1013.3 1013.4 1009.8 1004.3 1007.6 1002.0 1000.0 1002.1 1005.2 1012.2 1007.7 1015.0 1007.7 MAX. QFE PRESSURE IN HPA 1028.0 1021.8 1022.7 1014.0 1014.2 1008.4 1006.4 1009.0 1014.3 1028.0 1020.2 1027.2 1028.0 DAY 6 12 2 13 26 1 23 24 27 17 15 10 MIN. QFE PRESSURE IN HPA 1002.0 1000.0 993.7 991.1 1000.0 987.8 993.9 995.0 998.7 998.5 995.3 1004.0 987.8 DAY 11 8 25 19 2 29 16 22 17 3 8 22 MEAN QNH PRESSURE IN HPA 1016.9 1016.9 1013.4 1007.8 1011.1 1005.5 1003.5 1005.6 1008.7 1015.7 1011.2 1018.5 1011.2 MAX. QNH PRESSURE IN HPA 1031.6 1025.4 1026.3 1017.5 1017.7 1011.9 1009.9 1012.5 1017.8 1031.6 1023.8 1030.8 1031.6 DAY 6 12 2 13 26 1 23 24 27 17 15 10 MIN. QNH PRESSURE IN HPA 1005.5 1003.5 997.2 994.6 1003.5 991.3 997.4 998.5 1002.2 1002.0 998.8 1007.5 991.3 DAY 11 8 25 19 2 29 16 22 17 3 8 22 MEAN QFF PRESSURE IN HPA 1017.3 1017.3 1013.7 1008.1 1011.3 1005.7 1003.6 1005.7 1008.9 1016.0 1011.6 1018.9 1011.5 MAX. QFF PRESSURE IN HPA 1032.0 1025.8 1026.6 1017.8 1017.9 1012.1 1010.0 1012.7 1018.1 1032.0 1024.1 1031.2 1032.0 DAY 6 12 2 13 26 1 23 24 27 17 15 10 MIN. QFF PRESSURE IN HPA 1005.9 1003.9 997.5 994.8 1003.7 991.4 997.4 998.6 1002.3 1002.2 999.1 1007.9 991.4 DAY 11 8 25 19 2 29 16 22 17 3 8 26 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1012.1 1011.5 1008.2 1003.0 1006.2 1000.4 998.6 1000.4 1003.6 1010.9 1006.4 1013.6 1006.2 MAX. QFE PRESSURE IN HPA 1027.1 1020.0 1021.0 1012.2 1012.2 1006.1 1005.4 1008.0 1013.0 1027.2 1019.0 1026.2 1027.2 DAY 6 17 2 13 27 8 23 24 21 17 15 10 MIN. QFE PRESSURE IN HPA 1001.0 996.2 992.2 990.8 999.0 986.9 992.1 993.1 997.6 995.4 994.9 1001.7 986.9 DAY 11 8 25 19 7 29 16 22 5 3 8 26 MEAN QNH PRESSURE IN HPA 1015.6 1015.0 1011.8 1006.5 1009.7 1003.9 1002.1 1003.9 1007.1 1014.4 1009.9 1017.1 1009.7 MAX. QNH PRESSURE IN HPA 1030.7 1023.6 1024.6 1015.7 1015.7 1009.6 1008.9 1011.5 1016.5 1030.8 1022.6 1029.8 1030.8 DAY 6 17 2 13 27 8 23 24 21 17 15 10 MIN. QNH PRESSURE IN HPA 1004.5 999.7 995.7 994.3 1002.5 990.4 995.6 996.6 1001.1 998.9 998.4 1005.2 990.4 DAY 11 8 25 19 7 29 16 22 5 3 8 26 MEAN QFF PRESSURE IN HPA 1016.0 1015.4 1012.1 1006.7 1009.9 1004.1 1002.1 1004.0 1007.2 1014.7 1010.3 1017.5 1010.0 MAX. QFF PRESSURE IN HPA 1031.1 1024.0 1024.9 1016.0 1016.0 1009.8 1009.0 1011.7 1016.8 1031.1 1022.9 1030.2 1031.1 DAY 6 17 2 13 27 8 23 24 21 17 15 10 MIN. QFF PRESSURE IN HPA 1004.9 1000.1 996.0 994.5 1002.7 990.5 995.6 996.7 1001.2 999.1 998.7 1005.5 990.5 DAY 11 8 25 19 7 29 16 22 5 3 8 26 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1012.6 1011.7 1008.2 1002.8 1006.0 1000.0 998.2 1000.0 1003.7 1011.0 1007.2 1014.3 1006.3 MAX. QFE PRESSURE IN HPA 1028.0 1019.9 1021.0 1012.2 1013.0 1006.5 1004.9 1006.9 1013.9 1027.0 1019.0 1027.0 1028.0 DAY 6 17 2 6 27 8 23 24 21 17 15 8 MIN. QFE PRESSURE IN HPA 1001.1 997.0 993.1 990.2 1000.0 987.0 991.2 992.1 997.0 995.0 997.7 1002.1 987.0 DAY 11 8 25 19 7 29 15 22 4 3 8 26 MEAN QNH PRESSURE IN HPA 1016.1 1015.2 1011.7 1006.3 1009.5 1003.5 1001.7 1003.5 1007.2 1014.5 1010.7 1017.8 1009.8 MAX. QNH PRESSURE IN HPA 1031.6 1023.5 1024.6 1015.7 1016.5 1010.0 1008.4 1010.4 1017.4 1030.6 1022.6 1030.6 1031.6 DAY 6 17 2 6 27 8 23 24 21 17 15 8 MIN. QNH PRESSURE IN HPA 1004.6 1000.5 996.6 993.7 1003.5 990.5 994.7 995.6 1000.5 998.5 1001.2 1005.6 990.5 DAY 11 8 25 19 7 29 15 22 4 3 8 26 MEAN QFF PRESSURE IN HPA 1016.5 1015.6 1012.1 1006.6 1009.7 1003.7 1001.8 1003.6 1007.4 1014.8 1011.1 1018.3 1010.1 MAX. QFF PRESSURE IN HPA 1032.0 1023.9 1025.0 1016.1 1016.8 1010.2 1008.5 1010.6 1017.7 1031.0 1023.0 1031.1 1032.0 DAY 6 17 2 6 27 8 23 24 21 17 15 8 MIN. QFF PRESSURE IN HPA 1005.0 1000.9 996.9 993.9 1003.7 990.6 994.8 995.7 1000.6 998.7 1001.5 1006.0 990.6 DAY 11 8 25 19 7 29 15 22 4 3 8 26 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1013.2 1012.5 1009.2 1004.0 1007.3 1001.5 999.8 1001.9 1005.0 1012.0 1007.9 1014.9 1007.4 MAX. QFE PRESSURE IN HPA 1028.0 1019.9 1021.9 1016.0 1014.2 1008.0 1005.8 1008.8 1015.0 1027.0 1019.4 1027.7 1028.0 DAY 6 17 2 6 27 8 23 24 21 17 27 9 MIN. QFE PRESSURE IN HPA 1002.0 999.5 996.3 994.0 1001.4 990.0 992.0 996.0 998.7 1000.1 997.0 1001.1 990.0 DAY 11 8 25 18 5 28 15 22 4 3 8 21 MEAN QNH PRESSURE IN HPA 1016.8 1016.1 1012.8 1007.5 1010.8 1005.0 1003.3 1005.4 1008.5 1015.6 1011.5 1018.5 1011.0 MAX. QNH PRESSURE IN HPA 1031.6 1023.5 1025.5 1019.5 1017.7 1011.5 1009.3 1012.3 1018.5 1030.6 1023.0 1031.3 1031.6 DAY 6 17 2 6 27 8 23 24 21 17 27 9 MIN. QNH PRESSURE IN HPA 1005.5 1003.0 999.8 997.5 1004.9 993.5 995.5 999.5 1002.2 1003.6 1000.5 1004.6 993.5 DAY 11 8 25 18 5 28 15 22 4 3 8 21 MEAN QFF PRESSURE IN HPA 1017.2 1016.5 1013.1 1007.8 1011.0 1005.1 1003.4 1005.5 1008.7 1015.9 1011.8 1018.9 1011.3 MAX. QFF PRESSURE IN HPA 1032.0 1023.9 1025.9 1019.9 1018.0 1011.7 1009.4 1012.5 1018.8 1031.0 1023.4 1031.7 1032.0 DAY 6 17 2 6 27 8 23 24 21 17 27 9 MIN. QFF PRESSURE IN HPA 1005.9 1003.4 1000.1 997.7 1005.1 993.6 995.5 999.6 1002.3 1003.8 1000.8 1005.0 993.6 DAY 11 8 25 18 5 28 15 22 4 3 8 21 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1013.1 1012.7 1009.4 1004.2 1007.4 1001.9 1000.1 1002.2 1005.2 1012.2 1008.2 1015.0 1007.6 MAX. QFE PRESSURE IN HPA 1027.5 1019.7 1021.9 1015.4 1015.0 1008.9 1005.6 1008.9 1014.8 1025.3 1019.9 1028.0 1028.0 DAY 6 16 2 6 25 8 4 19 21 17 27 9 MIN. QFE PRESSURE IN HPA 1001.0 1000.5 998.0 993.0 1000.0 991.3 992.5 996.0 998.9 1002.0 997.7 1002.2 991.3 DAY 16 8 25 18 6 28 15 11 4 3 7 21 MEAN QNH PRESSURE IN HPA 1016.7 1016.2 1012.9 1007.7 1011.0 1005.4 1003.6 1005.7 1008.7 1015.8 1011.7 1018.6 1011.2 MAX. QNH PRESSURE IN HPA 1031.1 1023.3 1025.5 1018.9 1018.5 1012.4 1009.1 1012.4 1018.3 1028.9 1023.5 1031.6 1031.6 DAY 6 16 2 6 25 8 4 19 21 17 27 9 MIN. QNH PRESSURE IN HPA 1004.5 1004.0 1001.5 996.5 1003.5 994.8 996.0 999.5 1002.4 1005.5 1001.2 1005.7 994.8 DAY 16 8 25 18 6 28 15 11 4 3 7 21 MEAN QFF PRESSURE IN HPA 1017.1 1016.6 1013.3 1007.9 1011.2 1005.5 1003.7 1005.8 1008.9 1016.0 1012.0 1019.0 1011.4 MAX. QFF PRESSURE IN HPA 1031.5 1023.6 1025.9 1019.2 1018.7 1012.6 1009.2 1012.5 1018.6 1029.3 1023.8 1032.0 1032.0 DAY 6 16 2 6 25 8 4 19 21 17 27 9 MIN. QFF PRESSURE IN HPA 1004.9 1004.4 1001.8 996.7 1003.7 994.9 996.0 999.6 1002.5 1005.7 1001.5 1006.1 994.9 DAY 16 8 25 18 6 28 15 11 4 3 7 21 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.2 3.9 5.9 11.2 20.5 23.2 27.4 26.5 22.7 15.7 9.3 7.6 14.7 MINIMUN AIR TEMPERATURE (C) -0.5 0.0 2.9 6.2 14.3 16.4 20.8 21.4 17.1 11.5 5.5 4.6 10.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 2 17 19 1 0 0 0 39 DAYS WITH MINIMUM TEMP. <=-4 3 3 0 0 0 0 0 0 0 0 0 0 6 DAYS WITH FREEZING MIN.<= 0 19 13 8 2 0 0 0 0 0 0 0 2 44 TEMPERATURE RECORDS LOWEST(C) -5.4 -7.6 -3.4 -1.6 5.2 10.6 15.4 17.0 12.0 6.8 1.0 -1.6 -7.6 DAY 19 4 1 5 2 9 17 17 24 28 18 31 MAXIMUM AIR TEMPERATURE (C) 6.0 9.1 9.5 16.8 27.6 30.5 34.4 32.8 28.8 21.1 14.5 12.3 20.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 13 16 29 26 11 0 0 0 95 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 12.4 24.2 14.8 27.4 34.0 37.6 38.6 37.2 35.4 29.8 19.0 21.4 38.6 DAY 1 9 14 28 31 29 13 3 6 23 4 22 DIF. BETWEEN (MAX.-MIN.) (C) 6.5 9.1 6.6 10.6 13.3 14.1 13.6 11.4 11.7 9.6 9.0 7.7 10.3 MEAN DAILY TEMP. (MDT) (C) 2.8 4.6 6.2 11.5 21.0 23.5 27.6 27.1 23.0 16.3 10.0 8.5 15.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 41.4 77.9 205.0 189.6 71.3 0.6 0.0 0.0 585.8 HEATING DEG. DAYS(BASE 18 0C) 472.0 389.5 365.6 193.6 13.8 0.0 0.0 0.0 0.5 61.7 240.1 295.9 2032.7 DEWPOINT (MEAN C) -0.4 -0.4 3.2 7.3 14.8 13.2 16.4 17.4 16.9 11.2 6.3 4.3 9.2 MIXING RATIO (G/KG) 3.74 3.80 4.89 6.51 10.90 9.69 12.16 12.83 12.44 8.40 6.01 5.25 8.05 VAPOUR PRESSURE (HPA) 6.06 6.14 7.87 10.44 17.30 15.40 19.21 20.24 19.64 13.43 9.71 8.46 12.83 SATURATION DEF. (HPA) 1.26 2.33 1.61 3.39 8.19 14.33 18.67 15.32 8.97 4.95 2.28 2.25 6.96 RELATIVE HUMIDITY (MEAN %) 84 77 84 79 73 57 56 61 73 77 83 82 74 RELATIVE HUMIDITY (MAX. %) 96 92 96 97 95 83 80 83 93 93 96 94 92 RELATIVE HUMIDITY (MIN. %) 67 55 68 58 49 34 34 39 54 56 62 64 53 RELATIVE HUMIDITY (MEAN% 03UTC) 93 90 93 94 92 77 76 78 88 91 94 89 88 RELATIVE HUMIDITY (MEAN% 09UTC) 77 67 77 67 57 43 42 47 61 62 70 70 62 RELATIVE HUMIDITY (MEAN% 15UTC) 79 68 77 68 59 42 38 45 66 69 80 82 64 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 7.9 13.4 34.6 16.5 16.9 7.8 4.1 1.2 2.4 30.1 4.5 13.6 153.0 DAYS WITH PRECIPITATION >=10 0 0 1 0 0 0 0 0 0 1 0 0 2 DAYS WITH PRECIPITATION >= 5 0 1 1 1 2 0 0 0 0 2 0 0 7 DAYS WITH PRECIPITATION >= 1 3 3 8 6 4 3 1 1 1 5 2 4 41 DAYS WITH PRECIPITATION 9 9 12 10 10 5 4 3 6 9 5 10 92 GREATEST DAILY PRECIPITATION 3.2 5.9 12.4 5.0 7.0 4.0 3.2 1.0 1.6 14.1 1.9 4.6 14.1 DAY 11 29 26 9 25 4 6 17 22 14 7 7 DAY WITH THUNDER STORM 0 0 0 1 5 6 1 3 3 2 0 0 21 DAYS WITH SNOW OR SLEET 6 8 3 0 0 0 0 0 0 0 0 0 17 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 90 90 90 90 90 90 90 90 90 90 225 225 90 PREVAILING WIND SPEED(KNOTS) 7.9 9.8 8.1 8.3 8.2 10.6 9.4 10.0 9.4 8.8 5.0 5.5 9.1 PREVAILING WIND PERCENT 12.5 18.1 23.0 23.8 11.7 22.5 31.0 39.1 20.8 21.4 15.4 12.1 20.1 CALMS PERCENT OF WIND 71.0 53.9 56.9 46.7 41.9 37.5 34.7 33.5 46.3 52.0 70.4 63.7 50.7 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 124 92 89 75 70 69 78 78 68 85 182 138 83 VECTOR WIND MAGNITUDE(KNOTS) 0.8 1.4 2.0 2.0 0.6 2.3 3.8 4.7 1.9 1.7 0.5 0.7 1.8 WIND STEADINESES (MEAN %) 44.4 42.4 69.0 57.1 17.6 48.9 76.0 82.5 48.7 50.0 31.3 30.4 51.4 WIND SPEED (MEAN KNOTS) 1.8 3.3 2.9 3.5 3.4 4.7 5.0 5.7 3.9 3.4 1.6 2.3 3.5 FASTEST WIND DIRECTION 120 240 90 90 90 90 100 60 100 90 90 120 240 FASTEST WIND SPEED (KNOTS) 16 27 16 21 23 19 23 17 23 19 16 17 27 DAY 7 9 9 23 23 2 29 5 16 14 2 25 DAYS WITH SKY CLEAR (0-2)/8 3 7 1 4 9 16 19 15 18 8 9 9 118 DAYS WITH P.CLOUDY (3-6)/8 10 8 3 12 14 14 9 13 9 16 11 5 124 DAYS WITH CLOUDY (7-8)/8 18 14 27 14 8 0 3 3 3 7 10 17 124 DAYS WITH VISIBILITY =< 2 KM 4 4 6 3 2 0 0 0 0 4 4 7 34 DURATION OF SUNSHINE HOURS 63.0 117.0 54.7 164.1 247.9 281.8 308.8 267.5 241.0 185.5 135.0 102.0 2168.3 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1016.2 1011.6 1009.4 1008.4 1006.0 1005.1 1003.6 1002.8 1002.5 1008.7 1016.5 1011.2 1008.5 MAX. QFE PRESSURE IN HPA 1032.5 1023.7 1019.2 1024.0 1014.4 1015.2 1012.9 1017.7 1019.5 1024.7 1029.3 1021.0 1032.5 DAY-HOUR 9-18 13- 6 15-18 4- 6 1- 9 11- 6 3- 6 29- 6 30-21 1-18 16- 6 7-18 MIN. QFE PRESSURE IN HPA 1001.1 988.4 998.5 990.0 996.2 995.8 997.8 993.1 990.9 995.0 1007.7 996.4 988.4 DAY-HOUR 6-12 9-12 2- 9 18-12 16-15 29-15 24-15 7-15 8-15 27- 3 1-12 25- 3 MEAN QNH PRESSURE IN HPA 1019.7 1015.1 1012.9 1011.9 1009.5 1008.6 1007.1 1006.3 1006.0 1012.2 1020.1 1014.7 1012.0 MAX. QNH PRESSURE IN HPA 1036.1 1027.3 1022.8 1027.6 1017.9 1018.7 1016.4 1021.3 1023.1 1028.3 1032.9 1024.6 1036.1 DAY-HOUR 9-18 13- 6 15-18 4- 6 1- 9 11- 6 3- 6 29- 6 30-21 1-18 16- 6 7-18 MIN. QNH PRESSURE IN HPA 1004.6 991.9 1002.0 993.5 999.7 999.3 1001.3 996.6 994.4 998.5 1011.2 999.9 991.9 DAY-HOUR 6-12 9-12 2- 9 18-12 16-15 29-15 24-15 7-15 8-15 27- 3 1-12 25- 3 MEAN QFF PRESSURE IN HPA 1020.2 1015.5 1013.3 1012.2 1009.7 1008.8 1007.2 1006.4 1006.2 1012.5 1020.4 1015.1 1012.3 MAX. QFF PRESSURE IN HPA 1036.6 1027.8 1023.2 1028.0 1018.3 1018.9 1016.6 1021.4 1023.3 1028.6 1033.3 1024.9 1036.6 DAY-HOUR 9-18 13- 6 15-18 4- 6 1- 9 11- 6 3- 6 29- 6 30-21 1-18 16- 6 7-18 MIN. QFF PRESSURE IN HPA 1005.0 992.2 1002.4 993.7 999.8 999.4 1001.4 996.7 994.5 998.7 1011.5 1000.3 992.2 DAY-HOUR 6-12 9-12 2- 9 18-12 16-15 29-15 24-15 7-15 8-15 27- 3 1-12 25- 3 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1016.2 1011.3 1009.2 1008.3 1006.2 1005.3 1003.9 1002.9 1002.7 1008.8 1016.5 1011.3 1008.6 MAX. QFE PRESSURE IN HPA 1031.9 1023.0 1019.0 1023.0 1012.0 1013.2 1010.6 1015.2 1008.7 1022.8 1028.0 1020.5 1031.9 DAY 10 13 16 4 7 12 3 29 24 2 17 18 MIN. QFE PRESSURE IN HPA 1003.0 994.8 1000.0 994.5 1000.0 998.0 999.8 995.3 992.5 996.0 1010.0 997.2 992.5 DAY 6 10 26 13 29 1 24 8 8 27 29 25 MEAN QNH PRESSURE IN HPA 1019.8 1014.8 1012.7 1011.8 1009.7 1008.8 1007.4 1006.4 1006.2 1012.3 1020.1 1014.9 1012.1 MAX. QNH PRESSURE IN HPA 1035.5 1026.6 1022.6 1026.6 1015.5 1016.7 1014.1 1018.7 1012.2 1026.4 1031.6 1024.1 1035.5 DAY 10 13 16 4 7 12 3 29 24 2 17 18 MIN. QNH PRESSURE IN HPA 1006.5 998.3 1003.5 998.0 1003.5 1001.5 1003.3 998.8 996.0 999.5 1013.5 1000.7 996.0 DAY 6 10 26 13 29 1 24 8 8 27 29 25 MEAN QFF PRESSURE IN HPA 1020.2 1015.2 1013.1 1012.2 1009.9 1009.0 1007.5 1006.5 1006.3 1012.6 1020.4 1015.2 1012.4 MAX. QFF PRESSURE IN HPA 1036.0 1027.1 1023.0 1027.0 1015.8 1016.9 1014.2 1018.9 1012.5 1026.6 1032.0 1024.4 1036.0 DAY 10 13 16 5 26 12 3 29 24 2 17 18 MIN. QFF PRESSURE IN HPA 1006.9 998.6 1003.9 998.3 1003.7 1001.6 1003.4 998.9 996.1 999.7 1013.9 1001.1 996.1 DAY 6 10 26 13 29 1 24 8 8 27 29 25 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1016.1 1011.5 1009.4 1008.6 1006.7 1005.9 1004.5 1003.6 1003.3 1008.9 1016.6 1011.2 1008.9 MAX. QFE PRESSURE IN HPA 1031.1 1023.0 1018.7 1023.0 1013.0 1014.7 1012.0 1016.9 1009.9 1022.6 1028.0 1019.8 1031.1 DAY 10 13 16 4 7 11 3 29 24 2 16 7 MIN. QFE PRESSURE IN HPA 1003.0 995.1 1000.1 994.1 999.8 998.4 1000.0 996.0 994.0 995.0 1010.0 996.4 994.0 DAY 6 9 2 13 16 1 24 8 8 27 26 25 MEAN QNH PRESSURE IN HPA 1019.7 1015.1 1012.9 1012.2 1010.3 1009.4 1008.1 1007.1 1006.8 1012.4 1020.2 1014.7 1012.4 MAX. QNH PRESSURE IN HPA 1034.7 1026.6 1022.3 1026.6 1016.5 1018.2 1015.5 1020.4 1013.4 1026.2 1031.6 1023.4 1034.7 DAY 10 13 16 4 7 11 3 29 24 2 16 7 MIN. QNH PRESSURE IN HPA 1006.5 998.6 1003.6 997.6 1003.3 1001.9 1003.5 999.5 997.5 998.5 1013.5 999.9 997.5 DAY 6 9 2 13 16 1 24 8 8 27 26 25 MEAN QFF PRESSURE IN HPA 1020.2 1015.5 1013.3 1012.5 1010.3 1009.6 1008.2 1007.3 1007.0 1012.7 1020.6 1015.1 1012.7 MAX. QFF PRESSURE IN HPA 1035.2 1027.1 1022.7 1027.0 1016.8 1018.4 1015.7 1020.6 1013.7 1026.5 1032.0 1023.7 1035.2 DAY 10 13 16 4 26 11 3 29 24 2 16 7 MIN. QFF PRESSURE IN HPA 1006.9 998.9 1004.0 997.9 1003.5 1002.0 1003.6 999.6 997.6 998.7 1013.9 1000.3 997.6 DAY 6 9 2 13 16 1 24 8 8 27 26 25 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1017.1 1012.7 1010.3 1009.5 1007.3 1006.2 1004.9 1004.2 1003.8 1009.8 1017.5 1012.2 1009.6 MAX. QFE PRESSURE IN HPA 1032.0 1023.7 1019.1 1024.0 1014.0 1015.2 1012.9 1017.7 1010.7 1023.6 1029.3 1020.7 1032.0 DAY 10 13 16 4 26 11 3 29 30 1 16 7 MIN. QFE PRESSURE IN HPA 1003.5 994.0 1000.1 993.7 999.9 998.4 1000.6 996.7 994.0 996.8 1010.0 996.9 993.7 DAY 6 9 2 18 16 1 24 8 8 27 26 25 MEAN QNH PRESSURE IN HPA 1020.7 1016.2 1013.8 1013.0 1010.8 1009.7 1008.5 1007.7 1007.3 1013.4 1021.0 1015.7 1013.1 MAX. QNH PRESSURE IN HPA 1035.6 1027.3 1022.7 1027.6 1017.5 1018.7 1016.4 1021.3 1014.2 1027.2 1032.9 1024.3 1035.6 DAY 10 13 16 4 26 11 3 29 30 1 16 7 MIN. QNH PRESSURE IN HPA 1007.0 997.5 1003.6 997.2 1003.4 1001.9 1004.1 1000.2 997.5 1000.3 1013.5 1000.4 997.2 DAY 6 9 2 18 16 1 24 8 8 27 26 25 MEAN QFF PRESSURE IN HPA 1021.2 1016.7 1014.2 1013.3 1011.0 1009.8 1008.6 1007.8 1007.4 1013.6 1021.4 1016.1 1013.4 MAX. QFF PRESSURE IN HPA 1036.1 1027.8 1023.1 1028.0 1017.8 1018.9 1016.6 1021.4 1014.4 1027.5 1033.3 1024.6 1036.1 DAY 10 13 16 4 26 11 3 29 30 1 16 7 MIN. QFF PRESSURE IN HPA 1007.5 997.8 1004.0 997.5 1003.5 1002.1 1004.2 1000.3 997.6 1000.5 1013.9 1000.8 997.5 DAY 6 9 2 18 16 1 24 8 8 27 26 25 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1016.7 1012.1 1009.9 1008.8 1006.4 1005.3 1004.1 1003.1 1002.6 1008.9 1016.7 1011.4 1008.8 MAX. QFE PRESSURE IN HPA 1032.0 1022.9 1019.1 1023.3 1014.4 1015.0 1012.1 1016.9 1011.5 1023.9 1029.0 1020.5 1032.0 DAY 10 13 16 4 1 11 3 29 30 1 16 7 MIN. QFE PRESSURE IN HPA 1002.4 989.8 998.5 992.6 998.4 998.0 1000.0 996.0 992.2 998.2 1008.8 997.0 989.8 DAY 6 9 2 18 16 29 24 8 8 27 26 25 MEAN QNH PRESSURE IN HPA 1020.2 1015.6 1013.4 1012.3 1009.9 1008.8 1007.6 1006.6 1006.1 1012.4 1020.3 1015.0 1012.3 MAX. QNH PRESSURE IN HPA 1035.6 1026.5 1022.7 1026.9 1017.9 1018.5 1015.6 1020.4 1015.0 1027.5 1032.6 1024.1 1035.6 DAY 10 13 16 4 1 11 3 29 30 1 16 7 MIN. QNH PRESSURE IN HPA 1005.9 993.3 1002.0 996.1 1001.9 1001.5 1003.5 999.5 995.7 1001.7 1012.3 1000.5 993.3 DAY 6 9 2 18 16 29 24 8 8 27 26 25 MEAN QFF PRESSURE IN HPA 1020.7 1016.0 1013.8 1012.7 1010.1 1008.9 1007.7 1006.7 1006.2 1012.7 1020.6 1015.3 1012.6 MAX. QFF PRESSURE IN HPA 1036.1 1027.0 1023.1 1027.2 1018.3 1018.7 1015.8 1020.6 1015.2 1027.8 1033.0 1024.4 1036.1 DAY 10 13 16 4 1 11 3 29 30 1 16 7 MIN. QFF PRESSURE IN HPA 1006.3 993.6 1002.4 996.3 1002.0 1001.6 1003.6 999.6 995.8 1001.9 1012.6 1000.8 993.6 DAY 6 9 2 18 16 29 24 8 8 27 26 25 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1015.1 1010.6 1008.7 1007.3 1004.8 1003.8 1002.4 1001.5 1000.9 1007.6 1015.5 1010.3 1007.4 MAX. QFE PRESSURE IN HPA 1030.1 1021.8 1017.0 1022.0 1013.4 1014.0 1010.4 1016.0 1012.6 1023.0 1027.5 1020.0 1030.1 DAY 10 26 16 4 1 11 3 29 30 1 16 7 MIN. QFE PRESSURE IN HPA 1001.1 988.4 998.6 990.0 996.5 996.0 998.0 994.5 991.0 996.8 1007.7 998.0 988.4 DAY 6 9 2 18 16 29 24 7 8 26 1 24 MEAN QNH PRESSURE IN HPA 1018.6 1014.1 1012.2 1010.8 1008.4 1007.3 1005.9 1005.0 1004.4 1011.1 1019.0 1013.9 1010.9 MAX. QNH PRESSURE IN HPA 1033.7 1025.4 1020.5 1025.6 1016.9 1017.5 1013.9 1019.5 1016.1 1026.6 1031.1 1023.6 1033.7 DAY 10 26 16 4 1 11 3 29 30 1 16 7 MIN. QNH PRESSURE IN HPA 1004.6 991.9 1002.1 993.5 1000.0 999.5 1001.5 998.0 994.5 1000.3 1011.2 1001.5 991.9 DAY 6 9 2 18 16 29 24 7 8 26 1 24 MEAN QFF PRESSURE IN HPA 1019.1 1014.5 1012.6 1011.1 1008.5 1007.5 1006.0 1005.1 1004.5 1011.4 1019.4 1014.2 1011.2 MAX. QFF PRESSURE IN HPA 1034.2 1025.9 1021.0 1025.9 1017.3 1017.7 1014.0 1019.7 1016.3 1026.8 1031.5 1023.9 1034.2 DAY 10 26 16 4 1 11 3 29 30 1 16 7 MIN. QFF PRESSURE IN HPA 1005.0 992.2 1002.5 993.7 1000.1 999.6 1001.6 998.1 994.6 1000.5 1011.5 1001.9 992.2 DAY 6 9 2 18 16 29 24 7 8 26 1 25 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1015.7 1010.9 1008.9 1007.4 1004.8 1003.6 1001.9 1001.1 1001.3 1007.9 1016.0 1010.9 1007.5 MAX. QFE PRESSURE IN HPA 1031.2 1022.1 1017.9 1022.3 1012.7 1013.8 1009.4 1015.2 1015.5 1023.0 1027.7 1020.6 1031.2 DAY 9 26 15 4 1 11 3 29 30 1 16 7 MIN. QFE PRESSURE IN HPA 1001.8 990.1 999.0 994.0 996.2 995.8 997.8 993.1 990.9 995.1 1008.3 997.7 990.1 DAY 6 9 2 18 16 29 24 7 8 26 1 24 MEAN QNH PRESSURE IN HPA 1019.3 1014.5 1012.4 1011.0 1008.3 1007.1 1005.4 1004.6 1004.8 1011.4 1019.6 1014.4 1011.1 MAX. QNH PRESSURE IN HPA 1034.8 1025.7 1021.5 1025.9 1016.2 1017.3 1012.9 1018.7 1019.0 1026.6 1031.3 1024.2 1034.8 DAY 9 26 15 4 1 11 3 29 30 1 16 7 MIN. QNH PRESSURE IN HPA 1005.3 993.6 1002.5 997.5 999.7 999.3 1001.3 996.6 994.4 998.6 1011.8 1001.2 993.6 DAY 6 9 2 18 16 29 24 7 8 26 1 24 MEAN QFF PRESSURE IN HPA 1019.7 1014.9 1012.8 1011.3 1008.3 1007.3 1005.6 1004.7 1004.9 1011.7 1019.9 1014.8 1011.3 MAX. QFF PRESSURE IN HPA 1035.3 1026.2 1021.9 1026.3 1016.5 1017.6 1013.1 1018.9 1019.3 1026.9 1031.7 1024.5 1035.3 DAY 9 26 15 4 1 11 3 29 30 1 16 7 MIN. QFF PRESSURE IN HPA 1005.7 993.9 1002.9 997.8 999.8 999.4 1001.4 996.7 994.5 998.8 1012.1 1001.6 993.9 DAY 6 9 2 18 16 29 24 7 8 26 1 24 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1016.4 1011.8 1009.6 1008.6 1005.8 1005.1 1003.4 1002.8 1002.7 1008.8 1016.6 1011.2 1008.6 MAX. QFE PRESSURE IN HPA 1032.5 1023.0 1019.2 1023.7 1012.6 1014.0 1010.9 1016.0 1018.0 1024.7 1028.3 1021.0 1032.5 DAY 9 12 15 4 1 11 3 29 30 1 16 7 MIN. QFE PRESSURE IN HPA 1003.0 993.1 999.8 995.2 997.5 998.0 999.4 994.0 993.0 996.4 1009.0 997.0 993.0 DAY 6 9 2 18 15 1 17 7 8 26 1 24 MEAN QNH PRESSURE IN HPA 1019.9 1015.4 1013.2 1012.1 1009.3 1008.6 1006.9 1006.3 1006.2 1012.3 1020.2 1014.7 1012.1 MAX. QNH PRESSURE IN HPA 1036.1 1026.6 1022.8 1027.3 1016.1 1017.5 1014.4 1019.5 1021.6 1028.3 1031.9 1024.6 1036.1 DAY 9 12 15 4 1 11 3 29 30 1 16 7 MIN. QNH PRESSURE IN HPA 1006.5 996.6 1003.3 998.7 1001.0 1001.5 1002.9 997.5 996.5 999.9 1012.5 1000.5 996.5 DAY 6 9 2 18 15 1 17 7 8 26 1 24 MEAN QFF PRESSURE IN HPA 1020.4 1015.8 1013.6 1012.5 1009.5 1008.8 1007.0 1006.5 1006.4 1012.6 1020.6 1015.1 1012.4 MAX. QFF PRESSURE IN HPA 1036.6 1027.0 1023.2 1027.7 1016.5 1017.7 1014.5 1019.7 1021.8 1028.6 1032.3 1024.9 1036.6 DAY 9 12 15 4 1 11 3 29 30 1 16 7 MIN. QFF PRESSURE IN HPA 1007.0 996.9 1003.7 998.9 1001.1 1001.7 1003.0 997.6 996.6 1000.1 1012.9 1000.9 996.6 DAY 6 9 2 18 15 1 17 7 8 26 1 24 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1016.3 1011.8 1009.5 1008.6 1006.1 1005.7 1003.7 1003.1 1003.1 1008.8 1016.7 1011.3 1008.7 MAX. QFE PRESSURE IN HPA 1032.4 1022.6 1019.1 1023.7 1012.0 1014.0 1010.9 1015.1 1019.5 1023.9 1028.1 1021.0 1032.4 DAY 9 12 15 4 6 11 3 29 30 1 16 7 MIN. QFE PRESSURE IN HPA 1004.0 994.0 1000.0 995.0 998.0 999.0 999.8 994.0 993.5 995.3 1009.5 998.0 993.5 DAY 5 9 2 12 31 28 23 7 7 26 1 24 MEAN QNH PRESSURE IN HPA 1019.9 1015.3 1013.1 1012.2 1009.6 1009.2 1007.2 1006.6 1006.6 1012.4 1020.3 1014.8 1012.3 MAX. QNH PRESSURE IN HPA 1036.0 1026.2 1022.7 1027.3 1015.5 1017.5 1014.4 1018.6 1023.1 1027.5 1031.7 1024.6 1036.0 DAY 9 12 15 4 6 11 3 29 30 1 16 7 MIN. QNH PRESSURE IN HPA 1007.5 997.5 1003.5 998.5 1001.5 1002.5 1003.3 997.5 997.0 998.8 1013.0 1001.5 997.0 DAY 5 9 2 12 31 28 23 7 7 26 1 24 MEAN QFF PRESSURE IN HPA 1020.3 1015.7 1013.5 1012.5 1009.8 1009.4 1007.3 1006.7 1006.7 1012.6 1020.6 1015.2 1012.5 MAX. QFF PRESSURE IN HPA 1036.5 1026.7 1023.1 1027.7 1015.8 1017.7 1014.5 1018.8 1023.3 1027.8 1032.1 1024.9 1036.5 DAY 9 12 15 4 6 11 3 29 30 1 16 7 MIN. QFF PRESSURE IN HPA 1007.9 997.8 1003.9 998.8 1001.6 1002.6 1003.4 997.6 997.1 999.0 1013.4 1001.9 997.1 DAY 6 9 2 12 31 28 23 7 7 26 1 24 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.6 2.7 6.2 14.2 19.9 24.2 26.6 27.2 18.3 17.5 9.1 4.2 14.5 MINIMUN AIR TEMPERATURE (C) -0.2 -1.3 1.4 7.7 14.0 19.2 21.4 21.7 14.4 12.3 5.2 0.5 9.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 4 19 21 0 0 0 0 44 DAYS WITH MINIMUM TEMP. <=-4 2 6 0 0 0 0 0 0 0 0 0 3 11 DAYS WITH FREEZING MIN.<= 0 14 16 12 0 0 0 0 0 0 0 0 15 57 TEMPERATURE RECORDS LOWEST(C) -6.8 -8.0 -2.0 0.2 9.2 12.4 17.2 17.4 9.6 7.6 0.2 -6.0 -8.0 DAY 29 7 14 12 3 4 22 29 15 31 28 21 MAXIMUM AIR TEMPERATURE (C) 8.8 7.9 11.7 21.8 26.8 30.8 32.5 33.3 22.7 24.0 14.0 8.9 20.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 2 8 20 27 28 3 2 0 0 90 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 1 1 TEMPERATURE RECORDS HIGHEST(C) 17.2 19.6 21.2 33.0 31.4 35.2 37.2 36.6 33.6 33.0 17.6 16.6 37.2 DAY 6 15 23 24 26 13 30 1 1 14 3 15 DIF. BETWEEN (MAX.-MIN.) (C) 9.0 9.2 10.3 14.1 12.8 11.6 11.1 11.6 8.3 11.7 8.8 8.4 10.6 MEAN DAILY TEMP. (MDT) (C) 4.3 3.3 6.6 14.8 20.4 25.0 27.0 27.5 18.5 18.2 9.6 4.7 15.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 3.4 24.3 123.6 185.3 201.0 10.8 5.3 0.0 0.0 553.7 HEATING DEG. DAYS(BASE 18 0C) 423.7 411.7 354.2 111.3 12.8 0.0 0.0 0.0 24.0 30.6 251.9 412.7 2032.9 DEWPOINT (MEAN C) -0.6 -2.2 1.6 6.7 13.1 17.9 18.7 19.0 14.5 12.7 5.5 1.5 9.0 MIXING RATIO (G/KG) 3.74 3.31 4.34 6.38 9.61 13.11 13.80 14.13 10.47 9.33 5.69 4.39 8.19 VAPOUR PRESSURE (HPA) 6.04 5.36 6.97 10.17 15.30 20.65 21.68 22.20 16.67 14.88 9.19 7.09 13.02 SATURATION DEF. (HPA) 2.16 2.44 2.93 7.16 8.96 10.65 14.14 14.76 5.00 5.97 2.63 1.48 6.52 RELATIVE HUMIDITY (MEAN %) 77 75 75 65 69 71 65 63 80 76 80 85 73 RELATIVE HUMIDITY (MAX. %) 92 91 94 87 92 92 87 84 95 93 93 97 91 RELATIVE HUMIDITY (MIN. %) 55 54 51 40 43 46 44 42 63 53 61 67 52 RELATIVE HUMIDITY (MEAN% 03UTC) 86 83 90 83 88 89 83 82 92 90 90 93 87 RELATIVE HUMIDITY (MEAN% 09UTC) 63 62 62 48 51 56 52 50 67 59 66 73 59 RELATIVE HUMIDITY (MEAN% 15UTC) 73 69 65 53 53 55 50 49 75 71 78 83 65 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 12.9 34.9 32.4 4.1 25.2 46.1 14.3 0.0 67.0 4.3 2.1 15.0 258.3 DAYS WITH PRECIPITATION >=10 1 1 0 0 1 1 1 0 2 0 0 0 7 DAYS WITH PRECIPITATION >= 5 1 3 3 0 2 4 1 0 5 0 0 1 20 DAYS WITH PRECIPITATION >= 1 2 6 7 1 4 10 2 0 7 2 2 4 47 DAYS WITH PRECIPITATION 4 11 10 2 6 13 3 0 12 7 3 8 79 GREATEST DAILY PRECIPITATION 11.1 12.0 9.0 4.0 13.0 14.0 10.9 0.0 24.0 2.0 1.1 5.0 24.0 DAY 16 26 2 28 4 3 5 ** 4 23 13 10 DAY WITH THUNDER STORM 0 0 0 0 3 12 0 0 1 0 0 0 16 DAYS WITH SNOW OR SLEET 0 10 2 0 0 0 0 0 0 0 0 2 14 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 225 90 90 90 90 90 90 90 90 90 90 90 90 PREVAILING WIND SPEED(KNOTS) 4.7 8.6 8.2 8.6 8.3 7.2 7.7 7.7 9.5 7.6 6.3 9.4 8.2 PREVAILING WIND PERCENT 17.7 21.9 13.7 18.3 23.8 18.8 25.0 31.9 23.8 15.7 10.0 13.3 19.0 CALMS PERCENT OF WIND 55.2 48.2 51.2 37.1 44.0 43.8 43.1 41.5 54.6 61.3 73.8 69.0 51.9 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 132 118 105 64 77 66 68 77 85 99 113 102 85 VECTOR WIND MAGNITUDE(KNOTS) 1.0 1.4 0.7 0.9 2.0 1.7 2.5 3.0 2.2 0.8 0.4 0.9 1.4 WIND STEADINESES (MEAN %) 34.5 41.2 25.0 23.1 57.1 53.1 69.4 76.9 66.7 34.8 30.8 42.9 46.7 WIND SPEED (MEAN KNOTS) 2.9 3.4 2.8 3.9 3.5 3.2 3.6 3.9 3.3 2.3 1.3 2.1 3.0 FASTEST WIND DIRECTION 80 100 100 230 90 90 90 110 90 90 90 100 80 FASTEST WIND SPEED (KNOTS) 29 23 17 19 29 23 16 17 19 16 12 25 29 DAY 4 18 24 7 29 1 3 19 22 5 24 17 DAYS WITH SKY CLEAR (0-2)/8 11 12 11 9 11 14 18 14 10 17 8 8 143 DAYS WITH P.CLOUDY (3-6)/8 8 3 10 18 15 13 8 13 6 7 11 8 120 DAYS WITH CLOUDY (7-8)/8 12 13 10 3 5 3 5 4 14 7 11 15 102 DAYS WITH VISIBILITY =< 2 KM 4 4 6 3 4 2 1 0 0 1 3 7 35 DURATION OF SUNSHINE HOURS 146.1 131.2 158.2 223.6 259.1 271.2 290.4 254.5 159.2 203.6 113.9 62.8 2273.8 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1011.7 1013.9 1008.2 1003.2 1005.8 1000.8 999.5 1000.7 1008.5 1007.5 1013.7 1011.5 1007.1 MAX. QFE PRESSURE IN HPA 1024.7 1024.2 1027.8 1013.7 1015.7 1008.9 1008.9 1009.2 1020.0 1022.1 1030.6 1026.0 1030.6 DAY-HOUR 23- 9 8-18 11- 6 20- 6 14- 6 3- 3 19- 6 21- 6 7- 9 31-18 7- 6 17-15 MIN. QFE PRESSURE IN HPA 1000.8 1002.0 991.8 986.4 993.2 993.2 992.1 990.9 991.6 999.2 998.5 995.5 986.4 DAY-HOUR 29-15 2-12 23-12 5-12 4-12 30-15 1-15 14-15 1-15 2-12 5- 0 9- 0 MEAN QNH PRESSURE IN HPA 1015.3 1017.5 1011.7 1006.7 1009.3 1004.3 1003.0 1004.2 1012.0 1011.0 1017.2 1015.0 1010.6 MAX. QNH PRESSURE IN HPA 1028.3 1027.8 1031.4 1017.2 1019.2 1012.4 1012.4 1012.7 1023.6 1025.7 1034.2 1029.6 1034.2 DAY-HOUR 23- 9 8-18 11- 6 20- 6 14- 6 3- 3 19- 6 21- 6 7- 9 31-18 7- 6 17-15 MIN. QNH PRESSURE IN HPA 1004.3 1005.5 995.3 989.9 996.7 996.7 995.6 994.4 995.1 1002.7 1002.0 999.0 989.9 DAY-HOUR 29-15 2-12 23-12 5-12 4-12 30-15 1-15 14-15 1-15 2-12 5- 0 9- 0 MEAN QFF PRESSURE IN HPA 1015.7 1017.9 1012.1 1006.9 1009.5 1004.4 1003.1 1004.3 1012.2 1011.3 1017.6 1015.5 1010.9 MAX. QFF PRESSURE IN HPA 1028.7 1028.3 1031.8 1017.6 1019.5 1012.6 1012.6 1012.9 1023.8 1026.0 1034.6 1030.1 1034.6 DAY-HOUR 23- 9 8-18 11- 6 20- 6 14- 6 3- 3 19- 6 21- 6 7- 9 31-18 7- 6 17-15 MIN. QFF PRESSURE IN HPA 1004.8 1005.9 995.6 990.1 996.9 996.8 995.7 994.4 995.2 1002.9 1002.3 999.4 990.1 DAY-HOUR 29-15 2-12 23-12 5-12 4-12 30-15 1-15 14-15 1-15 2-12 5- 0 9- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1012.0 1013.8 1008.3 1003.3 1005.9 1000.9 999.8 1000.8 1008.4 1007.3 1013.8 1011.7 1007.2 MAX. QFE PRESSURE IN HPA 1022.9 1023.2 1026.0 1012.0 1014.2 1007.0 1007.3 1007.7 1018.7 1018.4 1028.6 1022.6 1028.6 DAY 24 21 11 20 14 4 19 21 7 31 7 18 MIN. QFE PRESSURE IN HPA 1002.6 1005.3 995.8 992.8 994.1 996.0 993.6 992.7 993.8 1001.8 998.5 995.5 992.7 DAY 30 18 23 5 4 13 11 5 2 14 5 9 MEAN QNH PRESSURE IN HPA 1015.5 1017.3 1011.8 1006.8 1009.4 1004.4 1003.3 1004.3 1011.9 1010.9 1017.4 1015.2 1010.7 MAX. QNH PRESSURE IN HPA 1026.5 1026.8 1029.6 1015.5 1017.7 1010.5 1010.8 1011.2 1022.3 1022.0 1032.2 1026.2 1032.2 DAY 24 21 11 20 14 4 19 21 7 31 7 18 MIN. QNH PRESSURE IN HPA 1006.1 1008.8 999.3 996.3 997.6 999.5 997.1 996.2 997.3 1005.3 1002.0 999.0 996.2 DAY 30 18 23 5 4 13 11 5 2 14 5 9 MEAN QFF PRESSURE IN HPA 1015.9 1017.8 1012.2 1007.0 1009.6 1004.5 1003.4 1004.3 1012.2 1011.1 1017.7 1015.6 1011.0 MAX. QFF PRESSURE IN HPA 1026.9 1027.3 1030.0 1015.8 1017.9 1010.7 1011.0 1011.3 1022.5 1022.2 1032.6 1026.7 1032.6 DAY 24 21 11 20 14 4 19 21 7 31 7 18 MIN. QFF PRESSURE IN HPA 1006.6 1009.2 999.6 996.6 997.8 999.6 997.1 996.2 997.4 1005.4 1002.3 999.4 996.2 DAY 30 18 23 5 4 30 11 5 2 14 5 9 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1011.9 1014.1 1008.9 1004.0 1006.7 1001.6 1000.4 1001.7 1008.9 1007.9 1014.1 1011.6 1007.6 MAX. QFE PRESSURE IN HPA 1022.1 1023.9 1026.2 1013.2 1014.6 1008.9 1008.2 1008.4 1018.9 1020.2 1029.5 1021.9 1029.5 DAY 23 21 11 20 14 3 19 21 7 31 7 17 MIN. QFE PRESSURE IN HPA 1003.4 1006.3 996.4 993.2 995.3 996.1 995.0 993.6 994.9 1001.5 1001.4 995.6 993.2 DAY 6 15 23 5 4 30 1 5 2 2 5 9 MEAN QNH PRESSURE IN HPA 1015.5 1017.6 1012.4 1007.5 1010.2 1005.1 1003.9 1005.2 1012.4 1011.4 1017.6 1015.1 1011.2 MAX. QNH PRESSURE IN HPA 1025.7 1027.5 1029.8 1016.7 1018.1 1012.4 1011.7 1011.9 1022.5 1023.8 1033.1 1025.5 1033.1 DAY 23 21 11 20 14 3 19 21 7 31 7 17 MIN. QNH PRESSURE IN HPA 1006.9 1009.8 999.9 996.7 998.8 999.6 998.5 997.1 998.4 1005.0 1004.9 999.1 996.7 DAY 6 15 23 5 4 30 1 5 2 2 5 9 MEAN QFF PRESSURE IN HPA 1015.9 1018.1 1012.8 1007.8 1010.4 1005.3 1004.0 1005.3 1012.6 1011.6 1018.0 1015.5 1011.4 MAX. QFF PRESSURE IN HPA 1026.1 1028.0 1030.2 1017.1 1018.4 1012.6 1011.9 1012.1 1022.7 1024.1 1033.5 1026.0 1033.5 DAY 23 21 11 20 14 3 19 21 7 31 7 17 MIN. QFF PRESSURE IN HPA 1007.4 1010.2 1000.2 997.0 999.0 999.7 998.6 997.2 998.5 1005.2 1005.2 999.5 997.0 DAY 6 15 23 5 4 30 1 5 2 2 5 9 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1012.8 1014.9 1009.7 1004.5 1007.3 1002.0 1000.8 1002.2 1009.5 1008.7 1014.9 1012.6 1008.3 MAX. QFE PRESSURE IN HPA 1024.6 1024.1 1027.8 1013.7 1015.7 1008.2 1008.9 1009.2 1019.9 1020.6 1030.6 1024.6 1030.6 DAY 23 21 11 20 14 3 19 21 7 31 7 17 MIN. QFE PRESSURE IN HPA 1002.8 1006.1 995.9 991.2 995.7 996.7 995.4 994.2 995.8 1001.6 1005.0 996.7 991.2 DAY 6 15 23 5 4 30 1 14 2 2 5 9 MEAN QNH PRESSURE IN HPA 1016.4 1018.5 1013.2 1008.0 1010.8 1005.5 1004.3 1005.7 1013.0 1012.2 1018.5 1016.1 1011.8 MAX. QNH PRESSURE IN HPA 1028.2 1027.7 1031.4 1017.2 1019.2 1011.7 1012.4 1012.7 1023.5 1024.2 1034.2 1028.2 1034.2 DAY 23 21 11 20 14 3 19 21 7 31 7 17 MIN. QNH PRESSURE IN HPA 1006.3 1009.6 999.4 994.7 999.2 1000.2 998.9 997.7 999.3 1005.1 1008.5 1000.2 994.7 DAY 6 15 23 5 4 30 1 14 2 2 5 9 MEAN QFF PRESSURE IN HPA 1016.8 1019.0 1013.6 1008.3 1011.0 1005.7 1004.4 1005.8 1013.3 1012.5 1018.9 1016.5 1012.1 MAX. QFF PRESSURE IN HPA 1028.6 1028.2 1031.8 1017.6 1019.5 1012.0 1012.6 1012.9 1023.7 1024.5 1034.6 1028.7 1034.6 DAY 23 21 11 20 14 3 19 21 7 31 7 17 MIN. QFF PRESSURE IN HPA 1006.8 1010.0 999.7 995.0 999.4 1000.3 999.0 997.7 999.4 1005.3 1008.8 1000.6 995.0 DAY 6 15 23 5 4 30 1 14 2 2 5 9 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1011.9 1014.4 1008.7 1003.3 1006.1 1001.1 999.8 1001.1 1008.6 1007.5 1013.8 1011.4 1007.3 MAX. QFE PRESSURE IN HPA 1024.7 1023.9 1026.3 1012.6 1015.7 1007.2 1007.6 1008.6 1020.0 1020.4 1029.7 1025.3 1029.7 DAY 23 25 11 1 14 3 19 21 7 31 7 17 MIN. QFE PRESSURE IN HPA 1002.1 1004.5 993.8 988.7 994.7 995.8 994.3 992.8 995.0 1000.3 1003.6 996.0 988.7 DAY 6 2 23 9 4 30 10 14 2 2 4 9 MEAN QNH PRESSURE IN HPA 1015.4 1017.9 1012.2 1006.8 1009.7 1004.6 1003.2 1004.6 1012.1 1011.1 1017.3 1014.9 1010.8 MAX. QNH PRESSURE IN HPA 1028.3 1027.5 1029.9 1016.1 1019.2 1010.7 1011.1 1012.1 1023.6 1024.0 1033.3 1028.9 1033.3 DAY 23 25 11 1 14 3 19 21 7 31 7 17 MIN. QNH PRESSURE IN HPA 1005.6 1008.0 997.3 992.2 998.2 999.3 997.8 996.3 998.5 1003.8 1007.1 999.5 992.2 DAY 6 2 23 9 4 30 10 14 2 2 4 9 MEAN QFF PRESSURE IN HPA 1015.8 1018.4 1012.6 1007.1 1009.9 1004.7 1003.4 1004.7 1012.4 1011.3 1017.7 1015.3 1011.1 MAX. QFF PRESSURE IN HPA 1028.7 1028.0 1030.3 1016.5 1019.5 1011.0 1011.3 1012.3 1023.8 1024.3 1033.7 1029.4 1033.7 DAY 23 25 11 1 14 3 19 21 7 31 7 17 MIN. QFF PRESSURE IN HPA 1006.0 1008.4 997.6 992.5 998.4 999.4 997.9 996.3 998.6 1004.0 1007.4 999.8 992.5 DAY 6 2 23 9 4 30 10 14 2 2 4 9 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1010.6 1013.0 1006.9 1001.7 1004.6 999.5 998.3 999.4 1007.3 1006.3 1012.6 1010.5 1005.9 MAX. QFE PRESSURE IN HPA 1024.0 1023.3 1024.4 1011.1 1014.0 1006.0 1006.4 1007.0 1019.4 1020.2 1028.5 1025.3 1028.5 DAY 23 25 11 1 14 3 19 21 7 31 7 17 MIN. QFE PRESSURE IN HPA 1001.0 1002.0 991.8 986.4 993.2 993.9 992.7 991.5 992.5 999.2 1001.6 995.8 986.4 DAY 6 2 23 5 4 30 10 14 1 2 4 9 MEAN QNH PRESSURE IN HPA 1014.2 1016.5 1010.5 1005.2 1008.1 1003.0 1001.8 1002.9 1010.8 1009.8 1016.2 1014.1 1009.4 MAX. QNH PRESSURE IN HPA 1027.6 1026.9 1028.0 1014.6 1017.5 1009.5 1009.9 1010.5 1023.0 1023.8 1032.1 1028.9 1032.1 DAY 23 25 11 1 14 3 19 21 7 31 7 17 MIN. QNH PRESSURE IN HPA 1004.5 1005.5 995.3 989.9 996.7 997.4 996.2 995.0 996.0 1002.7 1005.1 999.3 989.9 DAY 6 2 23 5 4 30 10 14 1 2 4 9 MEAN QFF PRESSURE IN HPA 1014.6 1016.9 1010.9 1005.5 1008.3 1003.1 1001.9 1003.0 1011.1 1010.1 1016.5 1014.5 1009.7 MAX. QFF PRESSURE IN HPA 1028.0 1027.4 1028.4 1014.9 1017.8 1009.7 1010.1 1010.6 1023.2 1024.1 1032.5 1029.4 1032.5 DAY 23 25 11 1 14 3 19 21 7 31 7 17 MIN. QFF PRESSURE IN HPA 1004.9 1005.9 995.6 990.1 996.9 997.5 996.3 995.0 996.1 1002.9 1005.4 999.6 990.1 DAY 6 2 23 5 4 30 10 14 1 2 4 9 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1011.2 1013.3 1007.2 1001.9 1004.5 999.3 997.9 999.2 1007.7 1006.9 1013.2 1011.3 1006.1 MAX. QFE PRESSURE IN HPA 1024.2 1023.5 1023.5 1010.3 1013.8 1005.9 1006.4 1006.8 1019.1 1021.0 1028.8 1026.0 1028.8 DAY 23 25 11 1 14 3 19 21 7 31 7 17 MIN. QFE PRESSURE IN HPA 1000.8 1003.5 992.2 988.4 995.0 993.2 992.1 990.9 991.6 1000.7 1001.2 996.7 988.4 DAY 29 2 23 5 4 30 1 14 1 13 4 9 MEAN QNH PRESSURE IN HPA 1014.7 1016.8 1010.7 1005.4 1008.0 1002.8 1001.4 1002.7 1011.2 1010.4 1016.7 1014.8 1009.6 MAX. QNH PRESSURE IN HPA 1027.8 1027.1 1027.1 1013.8 1017.3 1009.4 1009.9 1010.3 1022.7 1024.6 1032.4 1029.6 1032.4 DAY 23 25 11 1 14 3 19 21 7 31 7 17 MIN. QNH PRESSURE IN HPA 1004.3 1007.0 995.7 991.9 998.5 996.7 995.6 994.4 995.1 1004.2 1004.7 1000.2 991.9 DAY 29 2 23 5 4 30 1 14 1 13 4 9 MEAN QFF PRESSURE IN HPA 1015.2 1017.3 1011.1 1005.7 1008.2 1002.9 1001.5 1002.8 1011.4 1010.7 1017.1 1015.3 1009.9 MAX. QFF PRESSURE IN HPA 1028.2 1027.6 1027.5 1014.2 1017.6 1009.6 1010.1 1010.5 1022.9 1024.9 1032.8 1030.1 1032.8 DAY 23 25 11 1 14 3 19 21 7 31 7 17 MIN. QFF PRESSURE IN HPA 1004.8 1007.5 996.0 992.1 998.8 996.8 995.7 994.4 995.2 1004.4 1005.1 1000.5 992.1 DAY 29 2 23 5 4 30 1 14 1 13 4 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1011.8 1014.2 1008.0 1003.4 1005.7 1000.8 999.5 1000.7 1008.7 1007.7 1013.7 1011.7 1007.2 MAX. QFE PRESSURE IN HPA 1024.0 1024.2 1025.1 1011.7 1014.4 1007.3 1007.1 1008.0 1019.6 1022.1 1028.7 1025.4 1028.7 DAY 23 8 10 1 14 3 19 21 7 31 7 17 MIN. QFE PRESSURE IN HPA 1000.9 1005.4 993.6 992.7 994.5 994.4 993.5 992.9 992.2 1001.8 1000.4 997.7 992.2 DAY 29 2 23 5 3 12 10 12 1 13 4 8 MEAN QNH PRESSURE IN HPA 1015.3 1017.7 1011.5 1006.9 1009.2 1004.3 1003.0 1004.2 1012.2 1011.2 1017.2 1015.2 1010.7 MAX. QNH PRESSURE IN HPA 1027.6 1027.8 1028.7 1015.2 1017.9 1010.8 1010.6 1011.5 1023.2 1025.7 1032.3 1029.0 1032.3 DAY 23 8 10 1 14 3 19 21 7 31 7 17 MIN. QNH PRESSURE IN HPA 1004.4 1008.9 997.1 996.2 998.0 997.9 997.0 996.4 995.7 1005.3 1003.9 1001.2 995.7 DAY 29 2 23 5 3 12 10 12 1 13 4 8 MEAN QFF PRESSURE IN HPA 1015.8 1018.2 1011.9 1007.2 1009.4 1004.4 1003.1 1004.3 1012.5 1011.5 1017.6 1015.6 1011.0 MAX. QFF PRESSURE IN HPA 1028.1 1028.3 1029.1 1015.6 1018.2 1011.1 1010.8 1011.7 1023.4 1026.0 1032.7 1029.5 1032.7 DAY 23 8 10 1 14 3 19 21 7 31 7 17 MIN. QFF PRESSURE IN HPA 1004.9 1009.4 997.4 996.5 998.2 998.0 997.1 996.4 995.8 1005.5 1004.3 1001.6 995.8 DAY 29 2 23 5 3 12 10 12 1 13 4 8 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1011.9 1014.2 1008.0 1003.4 1005.7 1001.1 999.9 1000.7 1008.8 1007.8 1013.7 1011.7 1007.2 MAX. QFE PRESSURE IN HPA 1023.4 1023.9 1025.2 1011.7 1013.9 1007.6 1007.2 1008.1 1019.2 1022.1 1028.6 1024.1 1028.6 DAY 23 25 10 1 14 2 19 21 7 31 6 17 MIN. QFE PRESSURE IN HPA 1001.3 1005.8 994.6 993.3 994.5 995.5 993.1 992.7 992.0 1001.8 999.0 996.3 992.0 DAY 29 2 23 5 3 12 10 4 1 13 4 8 MEAN QNH PRESSURE IN HPA 1015.4 1017.7 1011.6 1006.9 1009.2 1004.6 1003.3 1004.2 1012.3 1011.3 1017.2 1015.2 1010.8 MAX. QNH PRESSURE IN HPA 1027.0 1027.5 1028.8 1015.2 1017.4 1011.1 1010.7 1011.6 1022.8 1025.7 1032.2 1027.7 1032.2 DAY 23 25 10 1 14 2 19 21 7 31 6 17 MIN. QNH PRESSURE IN HPA 1004.8 1009.3 998.1 996.8 998.0 999.0 996.6 996.2 995.5 1005.3 1002.5 999.8 995.5 DAY 29 2 23 5 3 12 10 4 1 13 4 8 MEAN QFF PRESSURE IN HPA 1015.9 1018.2 1012.0 1007.2 1009.4 1004.8 1003.5 1004.3 1012.5 1011.5 1017.6 1015.6 1011.0 MAX. QFF PRESSURE IN HPA 1027.4 1027.9 1029.2 1015.6 1017.7 1011.3 1010.8 1011.8 1023.0 1026.0 1032.6 1028.2 1032.6 DAY 23 25 10 1 14 2 19 21 7 31 6 17 MIN. QFF PRESSURE IN HPA 1005.3 1009.7 998.4 997.1 998.2 999.1 996.7 996.3 995.6 1005.5 1002.8 1000.1 995.6 DAY 29 2 23 5 3 12 10 4 1 13 4 8 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.2 2.9 8.0 16.0 20.1 26.9 27.5 27.3 21.5 15.7 10.5 6.0 15.5 MINIMUN AIR TEMPERATURE (C) 0.1 -1.8 3.0 9.7 14.2 19.8 21.4 21.9 17.3 11.1 6.8 2.2 10.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 9 20 23 3 0 0 0 55 DAYS WITH MINIMUM TEMP. <=-4 2 8 0 0 0 0 0 0 0 0 0 0 10 DAYS WITH FREEZING MIN.<= 0 15 17 6 0 0 0 0 0 0 0 0 5 43 TEMPERATURE RECORDS LOWEST(C) -4.4 -8.4 -3.6 1.4 7.8 16.0 17.4 18.8 11.6 6.6 1.8 -3.4 -8.4 DAY 4 15 1 1 4 4 26 23 29 26 12 27 MAXIMUM AIR TEMPERATURE (C) 7.2 9.6 13.9 23.8 27.0 34.8 34.4 33.8 27.2 21.9 15.6 11.3 21.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 4 4 27 30 25 6 1 0 0 97 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 12.8 18.2 18.4 37.2 32.0 40.0 38.4 38.0 35.4 30.6 25.4 22.8 40.0 DAY 10 7 13 14 31 21 10 7 1 1 6 7 DIF. BETWEEN (MAX.-MIN.) (C) 7.1 11.4 10.9 14.1 12.8 15.0 13.0 11.9 9.9 10.8 8.8 9.1 11.2 MEAN DAILY TEMP. (MDT) (C) 3.6 3.9 8.4 16.7 20.6 27.3 27.9 27.8 22.2 16.5 11.2 6.8 16.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 9.1 24.0 189.2 212.9 211.7 53.3 4.2 0.0 0.0 704.4 HEATING DEG. DAYS(BASE 18 0C) 445.9 394.5 296.1 68.0 11.6 0.0 0.0 0.0 0.6 71.0 205.3 347.7 1840.7 DEWPOINT (MEAN C) -0.1 -1.5 3.3 10.4 14.7 19.1 19.7 20.1 17.3 12.2 8.1 3.6 10.6 MIXING RATIO (G/KG) 3.80 3.48 4.93 8.09 10.68 14.12 14.78 15.10 12.60 9.06 6.82 4.95 9.03 VAPOUR PRESSURE (HPA) 6.15 5.63 7.91 12.89 16.97 22.26 23.18 23.74 19.96 14.49 10.98 8.01 14.35 SATURATION DEF. (HPA) 1.66 2.35 3.19 6.49 7.50 14.91 14.66 13.73 6.54 4.13 2.21 1.61 6.58 RELATIVE HUMIDITY (MEAN %) 81 76 75 73 74 65 65 67 79 82 86 86 76 RELATIVE HUMIDITY (MAX. %) 93 93 94 92 95 88 86 87 94 96 95 96 92 RELATIVE HUMIDITY (MIN. %) 64 50 52 50 51 43 45 47 59 62 70 69 55 RELATIVE HUMIDITY (MEAN% 03UTC) 90 86 90 90 93 85 83 84 92 93 93 93 89 RELATIVE HUMIDITY (MEAN% 09UTC) 69 59 62 58 58 52 54 54 66 68 75 73 62 RELATIVE HUMIDITY (MEAN% 15UTC) 79 70 62 61 60 48 51 55 67 80 87 86 67 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 9.8 34.9 33.0 14.0 16.8 3.8 1.7 32.5 13.0 20.9 5.5 1.1 187.0 DAYS WITH PRECIPITATION >=10 0 1 1 0 1 0 0 1 0 1 0 0 5 DAYS WITH PRECIPITATION >= 5 1 2 2 1 1 0 0 1 1 1 0 0 10 DAYS WITH PRECIPITATION >= 1 3 7 4 3 3 1 0 1 3 1 2 0 28 DAYS WITH PRECIPITATION 10 8 7 8 10 3 4 4 9 3 3 5 74 GREATEST DAILY PRECIPITATION 5.2 22.0 18.0 7.0 11.2 3.0 0.8 32.0 8.3 20.0 3.4 0.5 32.0 DAY 27 8 19 30 29 5 5 8 11 8 28 2 DAY WITH THUNDER STORM 0 0 1 1 2 4 2 4 1 0 0 0 15 DAYS WITH SNOW OR SLEET 3 4 0 0 0 0 0 0 0 0 0 0 7 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 90 90 90 90 90 90 90 90 90 90 90 90 90 PREVAILING WIND SPEED(KNOTS) 6.5 8.5 6.4 8.7 7.5 7.1 7.4 7.8 7.4 10.3 7.5 8.8 7.8 PREVAILING WIND PERCENT 14.9 22.3 14.9 25.0 27.0 37.5 30.2 30.2 25.0 22.6 25.0 14.1 24.0 CALMS PERCENT OF WIND 62.1 50.9 58.9 45.8 49.6 43.3 46.4 48.4 62.1 64.1 62.1 74.6 55.8 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 133 120 57 95 78 83 83 78 85 88 104 99 89 VECTOR WIND MAGNITUDE(KNOTS) 0.9 1.5 0.8 1.8 2.1 2.7 2.6 2.6 2.1 2.2 1.6 1.0 1.8 WIND STEADINESES (MEAN %) 42.9 45.5 34.8 51.4 63.6 75.0 74.3 74.3 80.8 73.3 64.0 55.6 62.1 WIND SPEED (MEAN KNOTS) 2.1 3.3 2.3 3.5 3.3 3.6 3.5 3.5 2.6 3.0 2.5 1.8 2.9 FASTEST WIND DIRECTION 100 90 100 90 90 90 90 80 90 90 90 100 90 FASTEST WIND SPEED (KNOTS) 14 23 23 19 16 19 19 16 14 19 17 23 23 DAY 11 14 7 17 25 23 11 1 5 17 19 24 DAYS WITH SKY CLEAR (0-2)/8 6 10 7 10 9 20 17 16 10 15 10 7 137 DAYS WITH P.CLOUDY (3-6)/8 9 11 14 15 19 8 12 9 10 8 10 13 138 DAYS WITH CLOUDY (7-8)/8 16 7 10 5 3 2 2 6 10 8 10 11 90 DAYS WITH VISIBILITY =< 2 KM 2 2 8 0 4 0 0 0 3 5 2 7 33 DURATION OF SUNSHINE HOURS 79.0 164.1 190.6 204.1 270.8 301.0 284.6 242.0 163.2 190.1 122.3 114.3 2326.1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1012.5 1012.9 1007.4 1005.2 1005.7 1003.2 1000.1 1002.4 1006.1 1011.3 1012.5 1015.0 1007.8 MAX. QFE PRESSURE IN HPA 1023.9 1029.7 1021.9 1017.3 1018.6 1009.9 1009.2 1009.3 1015.3 1029.6 1024.8 1026.5 1029.7 DAY-HOUR 22- 6 22- 6 26- 6 1- 6 3- 6 17- 3 20- 6 19- 6 12- 6 9- 6 23-18 3- 6 MIN. QFE PRESSURE IN HPA 997.7 991.0 992.2 995.1 991.1 995.0 985.8 995.1 995.1 992.8 1000.5 1001.9 985.8 DAY-HOUR 30- 0 14- 3 30- 0 20-18 21-15 22-15 5-12 30-15 23-15 1-12 1-12 11- 0 MEAN QNH PRESSURE IN HPA 1016.0 1016.4 1010.9 1008.7 1009.3 1006.7 1003.6 1005.9 1009.6 1014.8 1016.0 1018.6 1011.4 MAX. QNH PRESSURE IN HPA 1027.5 1033.3 1025.5 1020.8 1022.2 1013.4 1012.7 1012.8 1018.8 1033.2 1028.4 1030.1 1033.3 DAY-HOUR 22- 6 22- 6 26- 6 1- 6 3- 6 17- 3 20- 6 19- 6 12- 6 9- 6 23-18 3- 6 MIN. QNH PRESSURE IN HPA 1001.2 994.5 995.7 998.6 994.6 998.5 989.2 998.6 998.6 996.3 1004.0 1005.4 989.2 DAY-HOUR 30- 0 14- 3 30- 0 20-18 21-15 22-15 5-12 30-15 23-15 1-12 1-12 11- 0 MEAN QFF PRESSURE IN HPA 1016.4 1016.8 1011.3 1008.9 1009.5 1006.8 1003.7 1006.0 1009.8 1015.0 1016.3 1019.0 1011.6 MAX. QFF PRESSURE IN HPA 1027.9 1033.8 1025.9 1021.3 1022.5 1013.5 1012.8 1013.0 1019.1 1033.5 1028.7 1030.5 1033.8 DAY-HOUR 22- 6 22- 6 26- 6 1- 6 3- 6 17- 3 20- 6 19- 6 12- 6 9- 6 23-18 3- 6 MIN. QFF PRESSURE IN HPA 1001.6 994.9 996.0 998.8 994.7 998.5 989.3 998.7 998.7 996.4 1004.2 1005.8 989.3 DAY-HOUR 30- 0 14- 3 30- 0 20-18 21-15 22-15 5-12 30-15 23-15 1-12 1-12 11- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1012.4 1013.0 1007.4 1005.3 1006.0 1003.4 1000.3 1002.6 1006.4 1011.2 1012.4 1014.9 1007.9 MAX. QFE PRESSURE IN HPA 1022.6 1026.4 1018.5 1015.5 1016.2 1009.1 1007.8 1007.9 1014.8 1027.4 1024.0 1025.9 1027.4 DAY 22 23 26 1 3 17 20 19 12 9 24 3 MIN. QFE PRESSURE IN HPA 997.7 991.2 992.2 997.7 993.1 997.4 991.3 998.5 996.8 996.7 1003.4 1001.9 991.2 DAY 30 14 30 21 21 23 6 31 24 1 19 11 MEAN QNH PRESSURE IN HPA 1015.9 1016.5 1010.9 1008.8 1009.6 1006.9 1003.8 1006.1 1009.9 1014.7 1016.0 1018.5 1011.5 MAX. QNH PRESSURE IN HPA 1026.2 1030.0 1022.1 1019.0 1019.7 1012.6 1011.3 1011.4 1018.3 1031.0 1027.6 1029.5 1031.0 DAY 22 23 26 1 3 17 20 19 12 9 24 3 MIN. QNH PRESSURE IN HPA 1001.2 994.7 995.7 1001.2 996.6 1000.9 994.8 1002.0 1000.3 1000.2 1006.9 1005.4 994.7 DAY 30 14 30 21 21 23 6 31 24 1 19 11 MEAN QFF PRESSURE IN HPA 1016.4 1016.9 1011.3 1009.0 1009.8 1007.0 1003.9 1006.2 1010.1 1015.0 1016.3 1018.8 1011.7 MAX. QFF PRESSURE IN HPA 1026.6 1030.4 1022.5 1019.4 1020.0 1012.7 1011.4 1011.6 1018.6 1031.3 1027.9 1029.9 1031.3 DAY 22 23 26 1 3 17 20 19 12 9 24 3 MIN. QFF PRESSURE IN HPA 1001.6 995.1 996.0 1001.4 996.7 1000.9 994.9 1002.0 1000.4 1000.4 1007.2 1005.8 994.9 DAY 30 14 30 21 21 23 6 31 24 1 19 11 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1012.4 1013.0 1007.9 1005.8 1006.5 1004.2 1001.0 1003.4 1006.8 1011.7 1012.8 1014.9 1008.4 MAX. QFE PRESSURE IN HPA 1022.9 1027.3 1020.0 1016.6 1016.8 1009.9 1008.8 1008.6 1014.5 1028.7 1023.6 1025.8 1028.7 DAY 22 22 26 1 3 17 20 19 12 9 24 3 MIN. QFE PRESSURE IN HPA 998.7 991.0 992.9 998.0 993.9 998.8 991.9 998.7 998.1 997.2 1003.9 1002.9 991.0 DAY 30 14 30 21 21 23 6 23 24 1 16 21 MEAN QNH PRESSURE IN HPA 1016.0 1016.5 1011.4 1009.3 1010.0 1007.7 1004.5 1006.9 1010.3 1015.2 1016.4 1018.5 1011.9 MAX. QNH PRESSURE IN HPA 1026.5 1030.9 1023.6 1020.1 1020.3 1013.4 1012.3 1012.1 1018.0 1032.3 1027.2 1029.4 1032.3 DAY 22 22 26 1 3 17 20 19 12 9 24 3 MIN. QNH PRESSURE IN HPA 1002.2 994.5 996.4 1001.5 997.4 1002.3 995.4 1002.2 1001.6 1000.7 1007.4 1006.4 994.5 DAY 30 14 30 21 21 23 6 23 24 1 16 21 MEAN QFF PRESSURE IN HPA 1016.4 1017.0 1011.8 1009.5 1010.2 1007.8 1004.6 1007.0 1010.5 1015.5 1016.7 1018.9 1012.2 MAX. QFF PRESSURE IN HPA 1026.9 1031.3 1024.0 1020.6 1020.7 1013.5 1012.4 1012.3 1018.3 1032.7 1027.5 1029.8 1032.7 DAY 22 22 26 1 3 17 20 19 12 9 24 3 MIN. QFF PRESSURE IN HPA 1002.6 994.9 996.7 1001.7 997.6 1002.4 995.5 1002.3 1001.8 1000.9 1007.7 1006.8 994.9 DAY 30 14 30 21 21 23 6 23 24 1 16 21 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1013.5 1014.0 1008.7 1006.6 1007.1 1004.5 1001.3 1003.8 1007.4 1012.7 1013.7 1016.1 1009.1 MAX. QFE PRESSURE IN HPA 1023.9 1029.7 1021.9 1017.3 1018.6 1009.4 1009.2 1009.3 1015.3 1029.6 1024.2 1026.5 1029.7 DAY 22 22 26 1 3 17 20 19 12 9 24 3 MIN. QFE PRESSURE IN HPA 1000.0 992.5 994.0 998.0 994.5 999.8 991.5 998.9 999.7 996.6 1005.0 1005.7 991.5 DAY 30 14 30 21 21 22 5 23 24 1 1 21 MEAN QNH PRESSURE IN HPA 1017.0 1017.6 1012.2 1010.1 1010.7 1008.0 1004.8 1007.3 1011.0 1016.2 1017.3 1019.7 1012.7 MAX. QNH PRESSURE IN HPA 1027.5 1033.3 1025.5 1020.8 1022.2 1012.9 1012.7 1012.8 1018.8 1033.2 1027.8 1030.1 1033.3 DAY 22 22 26 1 3 17 20 19 12 9 24 3 MIN. QNH PRESSURE IN HPA 1003.5 996.0 997.5 1001.5 998.0 1003.3 995.0 1002.4 1003.2 1000.1 1008.5 1009.2 995.0 DAY 30 14 30 21 21 22 5 23 24 1 1 21 MEAN QFF PRESSURE IN HPA 1017.5 1018.0 1012.6 1010.4 1010.9 1008.1 1004.9 1007.4 1011.1 1016.5 1017.6 1020.1 1012.9 MAX. QFF PRESSURE IN HPA 1027.9 1033.8 1025.9 1021.3 1022.5 1013.0 1012.8 1013.0 1019.1 1033.5 1028.1 1030.5 1033.8 DAY 22 22 26 1 3 17 20 19 12 9 24 3 MIN. QFF PRESSURE IN HPA 1003.9 996.4 997.8 1001.7 998.2 1003.4 995.1 1002.5 1003.4 1000.3 1008.8 1009.6 995.1 DAY 30 14 30 21 21 22 5 23 24 1 1 21 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1012.7 1013.1 1007.7 1005.7 1006.1 1003.6 1000.3 1002.8 1006.4 1011.6 1012.5 1015.0 1008.1 MAX. QFE PRESSURE IN HPA 1023.1 1029.7 1020.4 1015.6 1017.9 1008.7 1008.4 1008.3 1014.8 1029.3 1023.7 1026.0 1029.7 DAY 22 22 26 1 3 16 20 19 11 9 23 3 MIN. QFE PRESSURE IN HPA 1000.0 994.6 994.0 995.7 992.9 998.0 989.2 998.1 998.3 994.1 1002.8 1004.9 989.2 DAY 30 7 30 21 21 22 5 26 1 1 1 23 MEAN QNH PRESSURE IN HPA 1016.3 1016.6 1011.2 1009.2 1009.6 1007.1 1003.8 1006.3 1009.9 1015.1 1016.0 1018.6 1011.6 MAX. QNH PRESSURE IN HPA 1026.7 1033.3 1024.0 1019.1 1021.5 1012.2 1011.9 1011.8 1018.3 1032.9 1027.3 1029.6 1033.3 DAY 22 22 26 1 3 16 20 19 11 9 23 3 MIN. QNH PRESSURE IN HPA 1003.5 998.1 997.5 999.2 996.4 1001.5 992.7 1001.6 1001.8 997.6 1006.3 1008.4 992.7 DAY 30 7 30 21 21 22 5 26 1 1 1 23 MEAN QFF PRESSURE IN HPA 1016.7 1017.1 1011.6 1009.5 1009.8 1007.2 1003.9 1006.4 1010.0 1015.4 1016.4 1019.0 1011.9 MAX. QFF PRESSURE IN HPA 1027.1 1033.7 1024.4 1019.5 1021.8 1012.3 1012.0 1012.0 1018.6 1033.2 1027.6 1030.0 1033.7 DAY 22 22 26 1 3 16 20 19 11 9 23 3 MIN. QFF PRESSURE IN HPA 1003.9 998.4 997.8 999.4 996.5 1001.6 992.7 1001.7 1001.8 997.7 1006.5 1008.8 992.7 DAY 30 7 30 21 21 22 5 26 1 1 1 23 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1011.6 1011.6 1006.1 1004.1 1004.8 1002.0 998.8 1001.1 1004.9 1010.0 1011.4 1013.9 1006.7 MAX. QFE PRESSURE IN HPA 1021.8 1027.8 1017.4 1013.1 1016.1 1006.9 1007.4 1006.7 1014.3 1027.8 1023.7 1024.5 1027.8 DAY 22 22 26 1 3 16 20 19 11 9 23 3 MIN. QFE PRESSURE IN HPA 999.3 994.6 993.0 995.2 991.6 995.7 985.8 996.0 996.2 992.8 1000.5 1003.7 985.8 DAY 30 7 29 21 21 22 5 30 23 1 1 23 MEAN QNH PRESSURE IN HPA 1015.1 1015.1 1009.6 1007.6 1008.3 1005.5 1002.3 1004.6 1008.4 1013.6 1014.9 1017.5 1010.2 MAX. QNH PRESSURE IN HPA 1025.4 1031.4 1020.9 1016.6 1019.6 1010.4 1010.9 1010.2 1017.8 1031.4 1027.3 1028.1 1031.4 DAY 22 22 26 1 3 16 20 19 11 9 23 3 MIN. QNH PRESSURE IN HPA 1002.8 998.1 996.5 998.7 995.1 999.2 989.2 999.5 999.7 996.3 1004.0 1007.2 989.2 DAY 30 7 29 21 21 22 5 30 23 1 1 23 MEAN QFF PRESSURE IN HPA 1015.6 1015.6 1009.9 1007.9 1008.5 1005.6 1002.4 1004.7 1008.6 1013.8 1015.2 1017.9 1010.5 MAX. QFF PRESSURE IN HPA 1025.8 1031.8 1021.4 1017.0 1019.9 1010.5 1011.0 1010.3 1018.1 1031.7 1027.6 1028.5 1031.8 DAY 22 22 26 1 3 16 20 19 11 9 23 3 MIN. QFF PRESSURE IN HPA 1003.2 998.4 996.8 998.9 995.2 999.3 989.3 999.5 999.8 996.4 1004.2 1007.6 989.3 DAY 30 7 29 21 21 22 5 30 23 1 1 23 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1012.1 1012.1 1006.3 1004.0 1004.3 1001.7 998.7 1000.9 1004.8 1010.2 1011.9 1014.8 1006.8 MAX. QFE PRESSURE IN HPA 1022.3 1027.6 1016.7 1012.3 1015.8 1007.1 1006.7 1006.7 1014.2 1027.1 1024.5 1024.9 1027.6 DAY 22 22 26 1 2 16 20 18 11 9 23 3 MIN. QFE PRESSURE IN HPA 999.9 993.7 992.6 995.5 991.1 995.0 986.8 995.1 995.1 994.7 1001.1 1004.1 986.8 DAY 30 13 29 20 21 22 5 30 23 1 1 10 MEAN QNH PRESSURE IN HPA 1015.7 1015.6 1009.8 1007.5 1007.8 1005.2 1002.2 1004.4 1008.3 1013.8 1015.4 1018.3 1010.3 MAX. QNH PRESSURE IN HPA 1025.9 1031.2 1020.2 1015.8 1019.3 1010.6 1010.2 1010.2 1017.7 1030.7 1028.1 1028.5 1031.2 DAY 22 22 26 1 2 16 20 18 11 9 23 3 MIN. QNH PRESSURE IN HPA 1003.4 997.2 996.1 999.0 994.6 998.5 990.3 998.6 998.6 998.2 1004.6 1007.6 990.3 DAY 30 13 29 20 21 22 5 30 23 1 1 10 MEAN QFF PRESSURE IN HPA 1016.1 1016.1 1010.2 1007.7 1008.0 1005.3 1002.3 1004.5 1008.5 1014.0 1015.7 1018.7 1010.6 MAX. QFF PRESSURE IN HPA 1026.3 1031.6 1020.6 1016.2 1019.7 1010.7 1010.3 1010.4 1018.0 1031.0 1028.4 1028.9 1031.6 DAY 22 22 26 1 2 16 20 18 11 9 23 3 MIN. QFF PRESSURE IN HPA 1003.8 997.6 996.4 999.2 994.7 998.5 990.3 998.7 998.7 998.4 1004.9 1008.0 990.3 DAY 30 13 29 20 21 22 5 30 23 1 1 10 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1012.6 1013.0 1007.4 1005.0 1005.5 1003.0 1000.0 1002.2 1006.1 1011.2 1012.5 1015.3 1007.8 MAX. QFE PRESSURE IN HPA 1022.3 1028.0 1017.2 1012.8 1016.7 1008.5 1007.7 1007.8 1015.1 1027.1 1024.8 1025.7 1028.0 DAY 22 22 26 11 2 16 19 18 11 9 23 2 MIN. QFE PRESSURE IN HPA 998.9 993.7 993.5 995.1 991.2 995.8 987.9 996.0 996.1 997.7 1002.0 1002.9 987.9 DAY 29 13 29 20 20 22 5 30 23 1 8 10 MEAN QNH PRESSURE IN HPA 1016.1 1016.6 1011.0 1008.5 1009.0 1006.5 1003.5 1005.7 1009.7 1014.7 1016.0 1018.9 1011.3 MAX. QNH PRESSURE IN HPA 1025.9 1031.6 1020.7 1016.3 1020.2 1012.0 1011.2 1011.3 1018.6 1030.7 1028.4 1029.3 1031.6 DAY 22 22 26 11 2 16 19 18 11 9 23 2 MIN. QNH PRESSURE IN HPA 1002.4 997.2 997.0 998.6 994.7 999.3 991.4 999.5 999.6 1001.2 1005.5 1006.4 991.4 DAY 29 13 29 20 20 22 5 30 23 1 8 10 MEAN QFF PRESSURE IN HPA 1016.6 1017.0 1011.3 1008.8 1009.2 1006.6 1003.6 1005.8 1009.8 1015.0 1016.4 1019.3 1011.6 MAX. QFF PRESSURE IN HPA 1026.3 1032.1 1021.2 1016.5 1020.5 1012.1 1011.3 1011.5 1018.9 1031.0 1028.7 1029.7 1032.1 DAY 22 22 26 11 2 16 19 18 11 9 23 2 MIN. QFF PRESSURE IN HPA 1002.8 997.6 997.3 998.8 994.9 999.4 991.5 999.5 999.7 1001.3 1005.8 1006.8 991.5 DAY 29 13 29 20 20 22 5 30 23 1 8 10 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1012.5 1013.2 1007.7 1005.2 1005.7 1003.3 1000.2 1002.6 1006.3 1011.5 1012.6 1015.5 1008.0 MAX. QFE PRESSURE IN HPA 1021.9 1027.6 1017.7 1014.2 1016.6 1009.1 1008.0 1008.5 1015.1 1026.9 1024.6 1026.3 1027.6 DAY 21 22 25 11 2 16 19 8 11 8 23 2 MIN. QFE PRESSURE IN HPA 998.1 992.7 993.2 995.5 991.2 996.7 989.8 996.0 996.3 999.7 1002.6 1002.6 989.8 DAY 29 13 29 20 20 22 5 30 23 16 18 20 MEAN QNH PRESSURE IN HPA 1016.0 1016.8 1011.2 1008.7 1009.2 1006.8 1003.7 1006.1 1009.8 1015.1 1016.2 1019.1 1011.5 MAX. QNH PRESSURE IN HPA 1025.5 1031.2 1021.3 1017.7 1020.1 1012.6 1011.5 1012.0 1018.6 1030.5 1028.2 1029.9 1031.2 DAY 21 22 25 11 2 16 19 8 11 8 23 2 MIN. QNH PRESSURE IN HPA 1001.6 996.2 996.7 999.0 994.7 1000.2 993.3 999.5 999.8 1003.2 1006.1 1006.1 993.3 DAY 29 13 29 20 20 22 5 30 23 16 18 20 MEAN QFF PRESSURE IN HPA 1016.5 1017.2 1011.5 1008.9 1009.4 1006.9 1003.8 1006.2 1010.0 1015.3 1016.5 1019.5 1011.8 MAX. QFF PRESSURE IN HPA 1025.9 1031.6 1021.6 1017.9 1020.4 1012.7 1011.6 1012.1 1018.9 1030.8 1028.5 1030.3 1031.6 DAY 21 22 25 11 2 16 19 8 11 8 23 2 MIN. QFF PRESSURE IN HPA 1002.0 996.6 997.0 999.2 994.8 1000.3 993.4 999.6 999.9 1003.4 1006.4 1006.5 993.4 DAY 29 13 29 20 20 22 5 30 23 16 18 20 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.6 6.9 8.7 13.7 17.8 24.5 27.0 28.2 21.5 16.0 8.2 5.7 15.2 MINIMUN AIR TEMPERATURE (C) 0.6 0.6 3.7 8.5 12.6 17.4 20.2 22.5 16.9 11.3 4.6 1.5 10.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 3 10 22 1 0 0 0 36 DAYS WITH MINIMUM TEMP. <=-4 3 2 0 0 0 0 0 0 0 0 0 0 5 DAYS WITH FREEZING MIN.<= 0 14 13 2 0 0 0 0 0 0 0 3 10 42 TEMPERATURE RECORDS LOWEST(C) -5.0 -4.4 -0.6 4.0 6.4 13.6 15.0 16.6 11.6 5.4 -1.6 -2.2 -5.0 DAY 3 6 2 7 8 2 15 31 29 27 28 2 MAXIMUM AIR TEMPERATURE (C) 10.2 14.5 14.6 20.4 24.4 31.6 34.3 34.9 27.2 22.0 13.6 11.6 21.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 5 25 30 28 6 0 0 0 94 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 19.4 22.6 18.8 27.0 31.4 35.6 37.4 40.4 32.6 29.8 20.4 23.2 40.4 DAY 11 25 9 19 29 12 11 4 10 1 15 30 DIF. BETWEEN (MAX.-MIN.) (C) 9.6 13.9 10.9 11.9 11.8 14.2 14.1 12.4 10.3 10.7 9.0 10.1 11.6 MEAN DAILY TEMP. (MDT) (C) 5.4 7.6 9.2 14.4 18.5 24.5 27.2 28.7 22.1 16.7 9.1 6.6 15.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 16.6 104.9 193.3 238.5 48.5 5.4 0.0 0.0 607.2 HEATING DEG. DAYS(BASE 18 0C) 390.6 291.8 274.3 108.5 42.4 0.0 0.0 0.0 0.2 77.8 267.6 354.2 1807.4 DEWPOINT (MEAN C) 1.6 2.1 4.8 8.7 11.3 13.6 16.9 19.8 16.0 12.0 5.7 3.5 9.7 MIXING RATIO (G/KG) 4.31 4.52 5.42 7.11 8.57 9.97 12.32 14.88 11.62 8.96 5.80 4.90 8.20 VAPOUR PRESSURE (HPA) 6.97 7.26 8.71 11.38 13.67 15.79 19.42 23.36 18.42 14.31 9.35 7.93 13.05 SATURATION DEF. (HPA) 1.81 3.37 2.87 5.11 7.87 16.16 17.56 16.09 7.98 4.84 1.95 1.65 7.27 RELATIVE HUMIDITY (MEAN %) 82 75 79 74 70 54 57 63 73 80 86 87 73 RELATIVE HUMIDITY (MAX. %) 94 93 94 93 90 80 82 86 91 95 98 97 91 RELATIVE HUMIDITY (MIN. %) 64 50 58 52 48 32 35 41 54 58 68 70 53 RELATIVE HUMIDITY (MEAN% 03UTC) 91 88 93 91 86 76 80 84 88 92 95 94 88 RELATIVE HUMIDITY (MEAN% 09UTC) 71 58 67 59 58 38 45 49 60 64 73 75 60 RELATIVE HUMIDITY (MEAN% 15UTC) 81 70 68 62 55 38 39 49 64 75 84 87 64 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 3.3 3.1 49.1 32.4 30.8 8.8 4.0 13.4 33.2 38.5 31.0 2.8 250.4 DAYS WITH PRECIPITATION >=10 0 0 1 1 0 0 0 0 1 1 1 0 5 DAYS WITH PRECIPITATION >= 5 0 0 3 2 4 1 0 1 1 2 2 0 16 DAYS WITH PRECIPITATION >= 1 2 1 6 5 5 2 1 3 3 4 4 2 38 DAYS WITH PRECIPITATION 4 2 9 8 10 6 1 7 7 12 10 2 78 GREATEST DAILY PRECIPITATION 1.2 2.6 25.6 19.3 8.2 5.7 4.0 9.0 27.0 25.0 19.0 1.7 27.0 DAY 18 3 28 8 14 26 12 13 26 24 26 16 DAY WITH THUNDER STORM 0 0 0 0 5 5 0 1 0 0 0 0 11 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 2 0 2 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 90 90 90 90 90 90 90 90 90 90 90 90 90 PREVAILING WIND SPEED(KNOTS) 7.9 8.2 7.5 8.2 8.4 8.0 6.9 8.5 8.2 6.9 9.5 8.1 8.0 PREVAILING WIND PERCENT 11.3 9.4 30.2 18.3 26.6 36.7 31.0 33.9 27.9 8.9 16.7 6.9 21.5 CALMS PERCENT OF WIND 81.9 71.9 59.3 65.4 48.8 40.8 52.0 50.8 61.3 78.2 72.9 83.5 63.9 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 99 82 94 81 80 81 78 83 83 73 100 117 85 VECTOR WIND MAGNITUDE(KNOTS) 0.9 0.3 2.5 1.5 2.0 3.5 2.6 3.4 2.3 0.5 1.4 0.4 1.8 WIND STEADINESES (MEAN %) 64.3 15.8 89.3 65.2 55.6 81.4 83.9 89.5 79.3 38.5 66.7 36.4 72.0 WIND SPEED (MEAN KNOTS) 1.4 1.9 2.8 2.3 3.6 4.3 3.1 3.8 2.9 1.3 2.1 1.1 2.5 FASTEST WIND DIRECTION 120 350 90 100 110 90 80 90 90 90 100 100 90 FASTEST WIND SPEED (KNOTS) 16 23 17 19 17 27 16 21 17 14 17 16 27 DAY 1 20 16 6 6 15 8 25 3 17 17 10 DAYS WITH SKY CLEAR (0-2)/8 12 18 10 16 15 27 23 16 10 16 10 13 186 DAYS WITH P.CLOUDY (3-6)/8 9 8 10 7 9 3 7 12 11 5 10 10 101 DAYS WITH CLOUDY (7-8)/8 10 2 11 7 7 0 1 3 9 10 10 8 78 DAYS WITH VISIBILITY =< 2 KM 5 5 6 1 3 0 0 2 2 4 1 6 35 DURATION OF SUNSHINE HOURS 133.5 196.4 159.0 217.2 257.3 330.2 330.4 275.5 185.9 195.1 144.6 138.1 2563.2 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1013.0 1006.9 1009.4 1008.3 1006.6 1002.3 1000.4 1000.2 1005.8 1009.3 1013.3 1014.0 1007.5 MAX. QFE PRESSURE IN HPA 1031.2 1020.3 1022.5 1019.6 1017.5 1013.4 1007.6 1009.2 1014.2 1021.1 1028.1 1029.0 1031.2 DAY-HOUR 2- 0 11- 6 18- 6 22- 9 8-21 16- 3 12-21 20- 6 23- 6 26- 6 30- 6 24- 6 MIN. QFE PRESSURE IN HPA 998.4 988.7 995.3 992.4 996.3 989.2 994.7 993.9 998.0 1000.0 997.6 999.4 988.7 DAY-HOUR 9-12 20- 6 20-15 13-12 13-21 24-12 21-15 6-12 10-12 10-15 24-21 15-12 MEAN QNH PRESSURE IN HPA 1016.6 1010.4 1012.9 1011.8 1010.1 1005.8 1003.9 1003.7 1009.3 1012.8 1016.9 1017.5 1011.0 MAX. QNH PRESSURE IN HPA 1034.8 1023.9 1026.1 1023.2 1021.1 1016.9 1011.1 1012.7 1017.7 1024.7 1031.7 1032.6 1034.8 DAY-HOUR 2- 0 11- 6 18- 6 22- 9 8-21 16- 3 12-21 20- 6 23- 6 26- 6 30- 6 24- 6 MIN. QNH PRESSURE IN HPA 1001.9 992.2 998.8 995.9 999.8 992.7 998.2 997.4 1001.5 1003.5 1001.1 1002.9 992.2 DAY-HOUR 9-12 20- 6 20-15 13-12 13-21 24-12 21-15 6-12 10-12 10-15 24-21 15-12 MEAN QFF PRESSURE IN HPA 1017.0 1010.8 1013.3 1012.1 1010.3 1005.9 1004.0 1003.8 1009.5 1013.1 1017.2 1017.9 1011.2 MAX. QFF PRESSURE IN HPA 1035.3 1024.3 1026.5 1023.5 1021.4 1017.1 1011.3 1012.8 1018.0 1025.0 1032.1 1033.0 1035.3 DAY-HOUR 2- 6 11- 6 18- 6 23- 6 8-21 16- 3 12-21 20- 6 23- 6 26- 6 30- 6 24- 6 MIN. QFF PRESSURE IN HPA 1002.2 992.5 999.1 996.1 999.9 992.8 998.3 997.4 1001.6 1003.7 1001.4 1003.3 992.5 DAY-HOUR 9-12 20- 6 20-15 13-12 13-21 24-12 21-15 6-12 10-12 10-15 24-21 15-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1013.3 1007.0 1009.3 1008.3 1006.6 1002.8 1000.6 1000.3 1005.8 1009.2 1013.2 1014.3 1007.6 MAX. QFE PRESSURE IN HPA 1031.2 1017.9 1020.3 1018.9 1017.1 1012.1 1006.6 1007.5 1013.4 1019.4 1027.6 1026.4 1031.2 DAY 2 11 18 23 9 16 13 20 5 26 11 24 MIN. QFE PRESSURE IN HPA 999.1 990.3 996.5 998.1 998.6 991.7 996.3 995.0 999.8 1001.3 998.2 1001.9 990.3 DAY 9 20 21 14 18 25 31 6 13 16 25 15 MEAN QNH PRESSURE IN HPA 1016.8 1010.6 1012.8 1011.8 1010.2 1006.3 1004.1 1003.8 1009.4 1012.7 1016.8 1017.9 1011.1 MAX. QNH PRESSURE IN HPA 1034.8 1021.5 1023.9 1022.5 1020.6 1015.6 1010.1 1011.0 1016.9 1023.0 1031.2 1030.0 1034.8 DAY 2 11 18 23 9 16 13 20 5 26 11 24 MIN. QNH PRESSURE IN HPA 1002.6 993.8 1000.0 1001.6 1002.1 995.2 999.8 998.5 1003.3 1004.8 1001.7 1005.4 993.8 DAY 9 20 21 14 18 25 31 6 13 16 25 15 MEAN QFF PRESSURE IN HPA 1017.3 1010.9 1013.2 1012.1 1010.4 1006.4 1004.2 1003.9 1009.5 1013.0 1017.1 1018.3 1011.4 MAX. QFF PRESSURE IN HPA 1035.2 1021.8 1024.3 1022.8 1021.0 1015.8 1010.3 1011.1 1017.1 1023.3 1031.7 1030.4 1035.2 DAY 2 11 18 23 9 16 13 20 5 26 11 24 MIN. QFF PRESSURE IN HPA 1003.0 994.1 1000.3 1001.8 1002.2 995.3 999.9 998.5 1003.5 1005.0 1002.0 1005.8 994.1 DAY 9 20 21 14 18 25 31 6 13 16 25 15 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1013.3 1007.3 1009.7 1008.9 1007.3 1003.6 1001.4 1001.1 1006.3 1009.6 1013.4 1014.3 1008.0 MAX. QFE PRESSURE IN HPA 1030.9 1018.9 1021.2 1018.9 1017.1 1013.4 1005.9 1008.5 1013.6 1019.6 1027.0 1027.0 1030.9 DAY 2 11 18 23 9 16 13 20 5 26 30 24 MIN. QFE PRESSURE IN HPA 999.2 988.8 995.7 997.9 998.7 991.9 996.8 996.0 1000.5 1001.6 1000.4 1001.7 988.8 DAY 9 20 21 13 18 25 31 6 15 16 25 15 MEAN QNH PRESSURE IN HPA 1016.8 1010.8 1013.2 1012.4 1010.8 1007.1 1004.9 1004.6 1009.8 1013.2 1016.9 1017.8 1011.5 MAX. QNH PRESSURE IN HPA 1034.5 1022.5 1024.8 1022.5 1020.6 1016.9 1009.4 1012.0 1017.1 1023.2 1030.6 1030.6 1034.5 DAY 2 11 18 23 9 16 13 20 5 26 30 24 MIN. QNH PRESSURE IN HPA 1002.7 992.3 999.2 1001.4 1002.2 995.4 1000.3 999.5 1004.0 1005.1 1003.9 1005.2 992.3 DAY 9 20 21 13 18 25 31 6 15 16 25 15 MEAN QFF PRESSURE IN HPA 1017.3 1011.2 1013.6 1012.7 1011.1 1007.2 1005.0 1004.7 1010.0 1013.4 1017.3 1018.3 1011.8 MAX. QFF PRESSURE IN HPA 1035.0 1022.9 1025.2 1022.8 1021.0 1017.1 1009.6 1012.1 1017.3 1023.5 1031.0 1031.0 1035.0 DAY 2 11 18 23 9 16 13 20 5 26 30 24 MIN. QFF PRESSURE IN HPA 1003.1 992.6 999.5 1001.7 1002.3 995.5 1000.4 999.5 1004.2 1005.4 1004.3 1005.6 992.6 DAY 9 20 21 13 18 25 31 6 15 16 25 15 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1014.1 1008.2 1010.7 1009.5 1007.6 1003.3 1001.6 1001.7 1006.9 1010.6 1014.2 1015.1 1008.6 MAX. QFE PRESSURE IN HPA 1031.2 1020.3 1022.5 1019.6 1017.2 1013.3 1006.3 1009.2 1014.2 1021.1 1028.1 1029.0 1031.2 DAY 2 11 18 23 9 16 18 20 23 26 30 24 MIN. QFE PRESSURE IN HPA 999.2 988.7 996.7 997.2 1000.3 992.4 997.2 997.0 1000.8 1003.5 1001.6 1001.4 988.7 DAY 9 20 21 13 18 25 31 5 15 16 25 15 MEAN QNH PRESSURE IN HPA 1017.7 1011.7 1014.3 1013.1 1011.1 1006.8 1005.1 1005.2 1010.4 1014.1 1017.8 1018.6 1012.2 MAX. QNH PRESSURE IN HPA 1034.8 1023.9 1026.1 1023.2 1020.7 1016.8 1009.8 1012.7 1017.7 1024.7 1031.7 1032.6 1034.8 DAY 2 11 18 23 9 16 18 20 23 26 30 24 MIN. QNH PRESSURE IN HPA 1002.7 992.2 1000.2 1000.7 1003.8 995.9 1000.7 1000.5 1004.3 1007.0 1005.1 1004.9 992.2 DAY 9 20 21 13 18 25 31 5 15 16 25 15 MEAN QFF PRESSURE IN HPA 1018.1 1012.1 1014.6 1013.4 1011.4 1007.0 1005.2 1005.3 1010.6 1014.4 1018.2 1019.0 1012.4 MAX. QFF PRESSURE IN HPA 1035.3 1024.3 1026.5 1023.5 1021.1 1017.0 1009.9 1012.8 1018.0 1025.0 1032.1 1033.0 1035.3 DAY 2 11 18 23 9 16 18 20 23 26 30 24 MIN. QFF PRESSURE IN HPA 1003.1 992.5 1000.5 1001.0 1004.0 996.0 1000.8 1000.5 1004.5 1007.3 1005.5 1005.3 992.5 DAY 9 20 21 13 18 25 31 6 15 16 25 15 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1013.2 1007.2 1010.0 1008.6 1006.6 1002.2 1000.5 1000.6 1005.9 1009.4 1013.1 1013.9 1007.6 MAX. QFE PRESSURE IN HPA 1028.7 1019.8 1022.1 1019.6 1015.6 1012.9 1005.2 1007.7 1012.6 1020.8 1027.5 1028.8 1028.8 DAY 2 11 18 22 9 16 18 20 23 26 30 24 MIN. QFE PRESSURE IN HPA 998.7 989.0 996.8 994.7 998.5 990.8 996.3 995.6 999.6 1001.6 1000.1 1000.1 989.0 DAY 9 20 21 13 13 24 31 6 15 28 25 15 MEAN QNH PRESSURE IN HPA 1016.7 1010.7 1013.5 1012.1 1010.1 1005.7 1004.0 1004.1 1009.4 1013.0 1016.6 1017.4 1011.1 MAX. QNH PRESSURE IN HPA 1032.3 1023.4 1025.7 1023.2 1019.1 1016.4 1008.7 1011.2 1016.1 1024.4 1031.1 1032.4 1032.4 DAY 2 11 18 22 9 16 18 20 23 26 30 24 MIN. QNH PRESSURE IN HPA 1002.2 992.5 1000.3 998.2 1002.0 994.3 999.8 999.1 1003.1 1005.1 1003.6 1003.6 992.5 DAY 9 20 21 13 13 24 31 6 15 28 25 15 MEAN QFF PRESSURE IN HPA 1017.1 1011.1 1013.9 1012.4 1010.4 1005.9 1004.1 1004.1 1009.6 1013.2 1017.0 1017.8 1011.4 MAX. QFF PRESSURE IN HPA 1032.7 1023.8 1026.1 1023.5 1019.5 1016.6 1008.8 1011.3 1016.4 1024.7 1031.5 1032.8 1032.8 DAY 2 11 18 22 9 16 18 20 23 26 30 24 MIN. QFF PRESSURE IN HPA 1002.6 992.8 1000.6 998.4 1002.2 994.4 999.9 999.1 1003.3 1005.4 1003.9 1004.0 992.8 DAY 9 20 21 13 13 24 31 6 15 28 25 15 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1011.8 1005.4 1008.3 1007.2 1005.4 1000.7 999.1 998.9 1004.6 1008.2 1012.3 1012.7 1006.2 MAX. QFE PRESSURE IN HPA 1025.9 1017.2 1020.8 1019.0 1014.5 1011.7 1003.8 1005.4 1011.8 1019.6 1026.6 1027.9 1027.9 DAY 2 11 18 22 8 16 18 20 4 26 30 24 MIN. QFE PRESSURE IN HPA 998.4 990.2 995.4 992.4 996.5 989.2 994.8 993.9 998.0 1001.1 1000.2 999.4 989.2 DAY 9 20 20 13 13 24 21 6 10 10 25 15 MEAN QNH PRESSURE IN HPA 1015.3 1008.9 1011.8 1010.7 1009.0 1004.2 1002.6 1002.4 1008.2 1011.7 1015.8 1016.2 1009.7 MAX. QNH PRESSURE IN HPA 1029.5 1020.7 1024.4 1022.6 1018.0 1015.2 1007.3 1008.9 1015.3 1023.2 1030.2 1031.5 1031.5 DAY 2 11 18 22 8 16 18 20 4 26 30 24 MIN. QNH PRESSURE IN HPA 1001.9 993.7 998.9 995.9 1000.0 992.7 998.3 997.4 1001.5 1004.6 1003.7 1002.9 992.7 DAY 9 20 20 13 13 24 21 6 10 10 25 15 MEAN QFF PRESSURE IN HPA 1015.8 1009.3 1012.2 1011.0 1009.2 1004.4 1002.7 1002.4 1008.3 1012.0 1016.2 1016.6 1010.0 MAX. QFF PRESSURE IN HPA 1029.9 1021.2 1024.8 1022.9 1018.4 1015.4 1007.4 1009.0 1015.5 1023.5 1030.6 1031.9 1031.9 DAY 2 11 18 22 8 16 18 20 4 26 30 24 MIN. QFF PRESSURE IN HPA 1002.2 994.0 999.2 996.1 1000.2 992.8 998.4 997.4 1001.6 1004.8 1004.0 1003.3 992.8 DAY 9 20 20 13 13 24 21 6 10 10 25 15 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 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 1012.4 1005.9 1008.4 1007.1 1005.4 1000.6 999.0 998.6 1004.9 1008.4 1013.0 1013.5 1006.4 MAX. QFE PRESSURE IN HPA 1027.2 1017.0 1019.9 1019.0 1015.3 1012.1 1006.6 1005.8 1012.0 1019.6 1027.0 1028.3 1028.3 DAY 1 11 18 22 8 16 12 19 4 26 30 24 MIN. QFE PRESSURE IN HPA 999.7 992.7 995.3 993.9 996.5 989.5 994.7 994.0 998.1 1000.0 999.6 1001.6 989.5 DAY 9 20 20 13 13 24 21 4 12 10 24 15 MEAN QNH PRESSURE IN HPA 1016.0 1009.4 1011.9 1010.6 1008.9 1004.1 1002.5 1002.1 1008.4 1011.9 1016.6 1017.0 1009.9 MAX. QNH PRESSURE IN HPA 1030.8 1020.5 1023.5 1022.6 1018.8 1015.6 1010.1 1009.3 1015.5 1023.2 1030.6 1031.9 1031.9 DAY 1 11 18 22 8 16 12 19 4 26 30 24 MIN. QNH PRESSURE IN HPA 1003.2 996.2 998.8 997.4 1000.0 993.0 998.2 997.5 1001.6 1003.5 1003.1 1005.1 993.0 DAY 9 20 20 13 13 24 21 4 12 10 24 15 MEAN QFF PRESSURE IN HPA 1016.4 1009.8 1012.3 1010.9 1009.2 1004.3 1002.6 1002.1 1008.6 1012.2 1017.0 1017.5 1010.2 MAX. QFF PRESSURE IN HPA 1031.2 1021.0 1023.9 1022.9 1019.2 1015.8 1010.3 1009.4 1015.7 1023.5 1031.0 1032.3 1032.3 DAY 1 11 18 22 8 16 12 19 4 26 30 24 MIN. QFF PRESSURE IN HPA 1003.6 996.6 999.1 997.6 1000.2 993.1 998.3 997.6 1001.8 1003.7 1003.5 1005.5 993.1 DAY 9 20 20 13 17 24 21 4 12 10 24 15 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1013.1 1007.1 1009.4 1008.4 1006.8 1002.3 1000.4 1000.1 1006.0 1009.3 1013.7 1014.0 1007.6 MAX. QFE PRESSURE IN HPA 1029.5 1017.7 1019.8 1019.5 1017.1 1013.1 1007.3 1007.5 1013.7 1019.4 1027.4 1028.1 1029.5 DAY 1 11 17 23 8 16 12 19 4 26 10 24 MIN. QFE PRESSURE IN HPA 999.8 994.1 996.7 996.3 996.7 991.9 995.9 995.5 999.6 1001.4 998.4 1002.6 991.9 DAY 8 19 20 13 13 24 21 4 12 10 24 14 MEAN QNH PRESSURE IN HPA 1016.6 1010.6 1013.0 1011.9 1010.3 1005.8 1003.9 1003.6 1009.5 1012.9 1017.2 1017.6 1011.1 MAX. QNH PRESSURE IN HPA 1033.1 1021.3 1023.4 1023.1 1020.6 1016.6 1010.8 1011.0 1017.2 1023.0 1031.0 1031.7 1033.1 DAY 1 11 17 23 8 16 12 19 4 26 10 24 MIN. QNH PRESSURE IN HPA 1003.3 997.6 1000.2 999.8 1000.2 995.4 999.4 999.0 1003.1 1004.9 1001.9 1006.1 995.4 DAY 8 19 20 13 13 24 21 4 12 10 24 14 MEAN QFF PRESSURE IN HPA 1017.1 1011.0 1013.3 1012.2 1010.6 1006.0 1004.1 1003.7 1009.7 1013.1 1017.6 1018.0 1011.4 MAX. QFF PRESSURE IN HPA 1033.6 1021.7 1023.8 1023.5 1021.0 1016.8 1011.0 1011.1 1017.4 1023.3 1031.5 1032.1 1033.6 DAY 1 11 17 23 8 16 12 19 4 26 10 24 MIN. QFF PRESSURE IN HPA 1003.7 997.9 1000.6 1000.0 1000.4 995.5 999.5 999.0 1003.3 1005.1 1002.3 1006.5 995.5 DAY 8 19 20 13 13 24 21 5 12 10 24 14 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1013.1 1007.5 1009.4 1008.4 1007.0 1002.7 1000.5 1000.5 1006.1 1009.6 1013.8 1014.0 1007.7 MAX. QFE PRESSURE IN HPA 1030.2 1019.5 1019.8 1019.2 1017.5 1012.5 1007.6 1007.7 1013.7 1019.4 1027.6 1027.5 1030.2 DAY 1 10 17 22 8 16 12 19 4 25 10 24 MIN. QFE PRESSURE IN HPA 999.8 993.8 996.8 997.6 996.3 992.8 996.3 994.8 999.8 1001.7 997.6 1002.2 992.8 DAY 8 19 20 13 13 24 31 5 9 10 24 14 MEAN QNH PRESSURE IN HPA 1016.7 1011.0 1012.9 1012.0 1010.5 1006.2 1004.0 1004.0 1009.6 1013.1 1017.4 1017.6 1011.2 MAX. QNH PRESSURE IN HPA 1033.8 1023.1 1023.4 1022.8 1021.1 1016.0 1011.1 1011.2 1017.2 1023.0 1031.2 1031.1 1033.8 DAY 1 10 17 22 8 16 12 19 4 25 10 24 MIN. QNH PRESSURE IN HPA 1003.3 997.3 1000.3 1001.1 999.8 996.3 999.8 998.3 1003.3 1005.2 1001.1 1005.7 996.3 DAY 8 19 20 13 13 24 31 5 9 10 24 14 MEAN QFF PRESSURE IN HPA 1017.1 1011.4 1013.3 1012.3 1010.8 1006.3 1004.1 1004.1 1009.8 1013.3 1017.7 1018.0 1011.5 MAX. QFF PRESSURE IN HPA 1034.2 1023.4 1023.8 1023.1 1021.4 1016.2 1011.3 1011.3 1017.4 1023.3 1031.7 1031.5 1034.2 DAY 1 10 17 22 8 16 12 19 4 25 10 24 MIN. QFF PRESSURE IN HPA 1003.7 997.6 1000.6 1001.3 999.9 996.4 999.9 998.3 1003.4 1005.4 1001.4 1006.1 996.4 DAY 8 19 20 13 13 24 31 5 9 10 24 14 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.9 5.2 7.2 16.4 18.5 23.7 28.1 27.5 22.2 14.0 8.9 6.0 15.1 MINIMUN AIR TEMPERATURE (C) 0.2 0.6 1.5 9.9 12.9 16.4 20.7 21.5 17.8 11.2 5.9 3.0 10.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 12 19 3 0 0 0 34 DAYS WITH MINIMUM TEMP. <=-4 6 2 2 0 0 0 0 0 0 0 0 0 10 DAYS WITH FREEZING MIN.<= 0 15 12 10 0 0 0 0 0 0 0 0 5 42 TEMPERATURE RECORDS LOWEST(C) -9.0 -4.6 -5.6 4.4 8.0 10.8 17.6 16.8 13.0 6.0 0.6 -2.2 -9.0 DAY 18 8 16 2 11 13 22 13 30 16 19 23 MAXIMUM AIR TEMPERATURE (C) 6.6 11.2 13.6 24.3 25.3 31.6 36.3 34.6 28.0 17.7 12.9 10.6 21.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 8 23 31 30 11 0 0 0 103 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 14.2 19.6 23.6 29.0 33.0 36.2 39.6 41.0 35.0 25.2 18.6 17.2 41.0 DAY 31 23 11 22 26 8 31 2 8 12 4 17 DIF. BETWEEN (MAX.-MIN.) (C) 6.4 10.6 12.1 14.4 12.4 15.2 15.6 13.1 10.2 6.5 7.0 7.6 11.0 MEAN DAILY TEMP. (MDT) (C) 3.4 5.9 7.5 17.1 19.1 24.0 28.5 28.0 22.9 14.4 9.4 6.8 15.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 24.4 95.1 232.7 217.8 78.7 0.0 0.0 0.0 648.7 HEATING DEG. DAYS(BASE 18 0C) 452.3 351.9 324.1 47.8 31.5 0.0 0.0 0.0 6.2 114.5 256.7 347.5 1932.5 DEWPOINT (MEAN C) 1.2 1.8 3.1 11.1 12.0 13.6 19.5 18.5 15.3 11.3 6.5 3.2 9.8 MIXING RATIO (G/KG) 4.26 4.39 4.88 8.45 8.93 9.93 14.61 13.70 11.07 8.42 6.09 4.84 8.30 VAPOUR PRESSURE (HPA) 6.87 7.09 7.85 13.44 14.22 15.74 22.96 21.57 17.56 13.52 9.85 7.82 13.21 SATURATION DEF. (HPA) 0.87 2.11 2.88 6.26 8.29 14.96 16.54 16.23 10.24 2.80 1.81 1.80 7.07 RELATIVE HUMIDITY (MEAN %) 90 81 77 73 70 57 62 61 68 85 86 84 75 RELATIVE HUMIDITY (MAX. %) 97 94 93 94 91 83 83 84 87 96 96 95 91 RELATIVE HUMIDITY (MIN. %) 76 61 57 49 46 34 43 39 48 69 70 67 55 RELATIVE HUMIDITY (MEAN% 03UTC) 94 89 90 91 88 78 81 80 82 94 94 90 88 RELATIVE HUMIDITY (MEAN% 09UTC) 80 68 65 58 53 41 51 47 55 75 74 73 62 RELATIVE HUMIDITY (MEAN% 15UTC) 90 79 69 64 55 40 48 46 58 83 85 85 67 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 52.2 23.5 30.9 1.2 30.1 1.6 0.0 0.8 20.7 80.6 15.9 9.0 266.5 DAYS WITH PRECIPITATION >=10 1 0 2 0 0 0 0 0 1 2 0 0 6 DAYS WITH PRECIPITATION >= 5 4 2 3 0 2 0 0 0 1 7 1 0 20 DAYS WITH PRECIPITATION >= 1 9 6 3 0 8 0 0 0 4 12 3 4 49 DAYS WITH PRECIPITATION 10 6 7 5 12 3 0 1 7 15 5 6 77 GREATEST DAILY PRECIPITATION 18.0 6.0 11.0 0.8 8.0 0.6 0.0 0.8 14.0 23.0 8.0 3.6 23.0 DAY 15 18 2 21 18 12 ** 29 30 25 9 21 DAY WITH THUNDER STORM 0 0 0 1 2 0 0 0 0 1 0 0 4 DAYS WITH SNOW OR SLEET 4 0 1 0 0 0 0 0 0 0 0 0 5 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 90 90 90 90 90 90 90 90 90 90 90 225 90 PREVAILING WIND SPEED(KNOTS) 8.1 9.1 10.6 7.0 7.8 7.4 7.8 9.0 9.4 7.9 8.6 8.5 8.6 PREVAILING WIND PERCENT 11.3 16.4 21.8 15.0 14.9 19.6 21.8 21.4 30.4 11.3 13.3 6.9 16.8 CALMS PERCENT OF WIND 77.4 65.5 53.6 69.6 75.0 59.2 62.5 68.5 63.8 83.1 83.3 80.6 70.2 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 117 103 94 68 78 92 93 96 101 102 100 202 97 VECTOR WIND MAGNITUDE(KNOTS) 0.7 1.2 1.9 0.9 1.0 2.2 2.4 2.8 3.4 1.3 1.3 0.4 1.6 WIND STEADINESES (MEAN %) 46.7 46.2 50.0 45.0 58.8 71.0 88.9 93.3 97.1 92.9 92.9 23.5 66.7 WIND SPEED (MEAN KNOTS) 1.5 2.6 3.8 2.0 1.7 3.1 2.7 3.0 3.5 1.4 1.4 1.7 2.4 FASTEST WIND DIRECTION 100 80 110 90 270 120 120 140 110 120 100 360 110 FASTEST WIND SPEED (KNOTS) 17 16 29 21 19 19 19 19 19 17 16 19 29 DAY 26 23 22 8 31 14 2 4 18 1 9 21 DAYS WITH SKY CLEAR (0-2)/8 8 14 14 10 14 22 27 18 14 8 9 10 168 DAYS WITH P.CLOUDY (3-6)/8 7 7 8 15 12 7 4 12 9 6 11 10 108 DAYS WITH CLOUDY (7-8)/8 16 8 9 5 5 1 0 1 7 17 10 11 90 DAYS WITH VISIBILITY =< 2 KM 6 4 3 6 3 0 1 0 2 6 1 5 37 DURATION OF SUNSHINE HOURS 105.3 156.1 195.3 213.3 240.3 309.8 332.8 263.9 180.3 110.4 113.0 107.1 2327.6 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1011.2 1011.8 1009.5 1003.6 1004.7 1002.4 1000.7 1001.4 1004.9 1013.4 1016.9 1012.5 1007.7 MAX. QFE PRESSURE IN HPA 1024.4 1030.4 1023.2 1014.7 1017.6 1013.8 1007.8 1007.8 1014.2 1021.0 1027.1 1025.6 1030.4 DAY-HOUR 14- 6 29- 6 1- 0 2- 6 4-18 12-18 30- 6 8- 6 29- 6 15- 6 16-18 9- 6 MIN. QFE PRESSURE IN HPA 988.8 1000.9 996.4 993.1 994.6 994.7 992.0 991.5 993.8 1003.8 1009.7 997.7 988.8 DAY-HOUR 19-12 23-12 11-12 7-12 26-12 7-15 7-15 2-15 7-12 10-12 12-15 21- 9 MEAN QNH PRESSURE IN HPA 1014.7 1015.3 1013.1 1007.1 1008.2 1005.9 1004.2 1004.9 1008.4 1016.9 1020.4 1016.0 1011.3 MAX. QNH PRESSURE IN HPA 1028.0 1034.0 1026.8 1018.2 1021.2 1017.3 1011.3 1011.3 1017.7 1024.6 1030.7 1029.2 1034.0 DAY-HOUR 14- 6 29- 6 1- 0 2- 6 4-18 12-18 30- 6 8- 6 29- 6 15- 6 16-18 9- 6 MIN. QNH PRESSURE IN HPA 992.3 1004.4 999.9 996.6 998.1 998.2 995.5 995.0 997.3 1007.3 1013.2 1001.2 992.3 DAY-HOUR 19-12 23-12 11-12 7-12 26-12 7-15 7-15 2-15 7-12 10-12 12-15 21- 9 MEAN QFF PRESSURE IN HPA 1015.1 1015.7 1013.4 1007.4 1008.4 1006.1 1004.3 1005.0 1008.6 1017.2 1020.8 1016.4 1011.5 MAX. QFF PRESSURE IN HPA 1028.4 1034.5 1027.3 1018.6 1021.5 1017.6 1011.4 1011.4 1018.0 1024.9 1031.1 1029.6 1034.5 DAY-HOUR 14- 6 29- 6 1- 0 2- 6 4-18 12-18 30- 6 8- 6 29- 6 15- 6 16-18 9- 6 MIN. QFF PRESSURE IN HPA 992.7 1004.7 1000.2 996.8 998.2 998.3 995.6 995.0 997.4 1007.5 1013.6 1001.6 992.7 DAY-HOUR 19-12 23-12 11-12 7-12 26-12 7-15 7-15 3- 0 7-12 10-12 12-15 21- 9 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1011.3 1011.5 1009.8 1004.0 1005.0 1002.8 1000.9 1001.6 1004.9 1013.3 1016.9 1012.5 1007.9 MAX. QFE PRESSURE IN HPA 1023.0 1027.3 1023.2 1012.9 1015.8 1013.2 1005.2 1006.3 1012.6 1018.8 1026.2 1024.3 1027.3 DAY 14 29 1 2 5 13 30 8 29 15 17 10 MIN. QFE PRESSURE IN HPA 993.1 1003.7 999.2 995.8 997.3 996.2 995.1 991.5 995.6 1005.6 1012.1 1000.6 991.5 DAY 21 23 19 21 27 8 8 3 7 10 22 20 MEAN QNH PRESSURE IN HPA 1014.9 1015.1 1013.3 1007.6 1008.5 1006.3 1004.4 1005.1 1008.4 1016.8 1020.5 1016.0 1011.4 MAX. QNH PRESSURE IN HPA 1026.6 1030.9 1026.8 1016.4 1019.3 1016.7 1008.7 1009.8 1016.1 1022.4 1029.8 1027.9 1030.9 DAY 14 29 1 2 5 13 30 8 29 15 17 10 MIN. QNH PRESSURE IN HPA 996.6 1007.2 1002.7 999.3 1000.8 999.7 998.6 995.0 999.1 1009.1 1015.6 1004.1 995.0 DAY 21 23 19 21 27 8 8 3 7 10 22 20 MEAN QFF PRESSURE IN HPA 1015.3 1015.5 1013.7 1007.8 1008.7 1006.4 1004.5 1005.2 1008.6 1017.1 1020.8 1016.4 1011.7 MAX. QFF PRESSURE IN HPA 1027.0 1031.3 1027.3 1016.8 1019.7 1017.0 1008.8 1009.9 1016.4 1022.7 1030.1 1028.3 1031.3 DAY 14 29 1 2 5 13 30 8 29 15 17 10 MIN. QFF PRESSURE IN HPA 997.0 1007.6 1003.0 999.5 1000.9 999.8 998.6 995.0 999.2 1009.3 1016.0 1004.5 995.0 DAY 21 23 19 21 27 8 8 3 7 10 22 20 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1011.1 1011.8 1010.2 1004.5 1005.4 1003.4 1001.9 1002.5 1005.4 1013.4 1017.1 1012.5 1008.3 MAX. QFE PRESSURE IN HPA 1023.3 1029.1 1022.5 1013.9 1015.9 1013.7 1006.9 1007.2 1012.9 1019.7 1025.9 1023.7 1029.1 DAY 14 29 1 2 5 13 30 8 29 15 17 10 MIN. QFE PRESSURE IN HPA 993.8 1003.7 999.5 996.1 998.9 997.3 996.1 992.8 996.4 1005.6 1012.2 999.6 992.8 DAY 19 23 19 21 26 19 8 3 7 10 22 21 MEAN QNH PRESSURE IN HPA 1014.6 1015.3 1013.7 1008.0 1008.9 1007.0 1005.4 1006.0 1008.9 1016.9 1020.6 1016.1 1011.8 MAX. QNH PRESSURE IN HPA 1026.9 1032.7 1026.1 1017.4 1019.4 1017.2 1010.4 1010.7 1016.4 1023.3 1029.5 1027.3 1032.7 DAY 14 29 1 2 5 13 30 8 29 15 17 10 MIN. QNH PRESSURE IN HPA 997.3 1007.2 1003.0 999.6 1002.4 1000.8 999.6 996.3 999.9 1009.1 1015.7 1003.1 996.3 DAY 19 23 19 21 26 19 8 3 7 10 22 21 MEAN QFF PRESSURE IN HPA 1015.1 1015.8 1014.1 1008.3 1009.1 1007.1 1005.5 1006.1 1009.1 1017.2 1021.0 1016.5 1012.1 MAX. QFF PRESSURE IN HPA 1027.3 1033.2 1026.6 1017.8 1019.8 1017.5 1010.5 1010.9 1016.7 1023.6 1029.8 1027.7 1033.2 DAY 14 29 1 2 5 13 30 8 29 15 17 10 MIN. QFF PRESSURE IN HPA 997.8 1007.6 1003.4 999.8 1002.5 1000.9 999.6 996.3 1000.0 1009.3 1016.2 1003.5 996.3 DAY 19 23 19 21 27 19 8 3 7 11 22 21 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1012.1 1012.9 1011.1 1005.1 1005.8 1003.7 1002.3 1003.0 1006.2 1014.2 1018.0 1013.5 1009.0 MAX. QFE PRESSURE IN HPA 1024.4 1030.4 1022.2 1014.7 1016.0 1013.2 1007.8 1007.8 1014.2 1021.0 1026.3 1025.6 1030.4 DAY 14 29 1 2 5 13 30 8 29 15 16 9 MIN. QFE PRESSURE IN HPA 993.6 1004.2 1001.7 997.3 998.6 997.6 997.4 994.3 996.7 1006.5 1013.3 998.5 993.6 DAY 19 23 19 21 26 8 7 3 7 10 22 21 MEAN QNH PRESSURE IN HPA 1015.7 1016.4 1014.6 1008.6 1009.4 1007.2 1005.8 1006.5 1009.7 1017.8 1021.5 1017.0 1012.5 MAX. QNH PRESSURE IN HPA 1028.0 1034.0 1025.8 1018.2 1019.5 1016.7 1011.3 1011.3 1017.7 1024.6 1029.9 1029.2 1034.0 DAY 14 29 1 2 5 13 30 8 29 15 16 9 MIN. QNH PRESSURE IN HPA 997.1 1007.7 1005.2 1000.8 1002.1 1001.1 1000.9 997.8 1000.2 1010.0 1016.8 1002.0 997.1 DAY 19 23 19 21 26 8 7 3 7 10 22 21 MEAN QFF PRESSURE IN HPA 1016.1 1016.8 1015.0 1008.9 1009.6 1007.4 1005.9 1006.6 1009.8 1018.0 1021.9 1017.4 1012.8 MAX. QFF PRESSURE IN HPA 1028.4 1034.5 1026.2 1018.6 1019.9 1017.0 1011.4 1011.4 1018.0 1024.9 1030.2 1029.6 1034.5 DAY 14 29 1 2 5 13 30 8 29 15 16 9 MIN. QFF PRESSURE IN HPA 997.6 1008.1 1005.5 1001.0 1002.2 1001.2 1001.0 997.8 1000.3 1010.3 1017.3 1002.4 997.6 DAY 19 23 19 21 26 8 7 3 7 10 3 21 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1011.1 1012.0 1010.0 1003.9 1004.9 1002.6 1001.1 1001.8 1005.1 1013.6 1017.0 1012.7 1008.0 MAX. QFE PRESSURE IN HPA 1023.5 1029.8 1019.8 1013.2 1014.8 1012.0 1006.6 1006.9 1013.8 1021.0 1026.4 1025.5 1029.8 DAY 14 29 1 1 4 12 30 8 25 15 16 9 MIN. QFE PRESSURE IN HPA 989.1 1003.3 998.3 995.6 996.8 997.4 995.6 993.8 995.6 1005.6 1012.4 997.7 989.1 DAY 19 23 11 7 26 8 7 3 7 10 21 21 MEAN QNH PRESSURE IN HPA 1014.6 1015.6 1013.5 1007.4 1008.4 1006.1 1004.6 1005.3 1008.6 1017.1 1020.6 1016.2 1011.5 MAX. QNH PRESSURE IN HPA 1027.1 1033.4 1023.4 1016.7 1018.3 1015.5 1010.1 1010.4 1017.3 1024.6 1030.0 1029.1 1033.4 DAY 14 29 1 1 4 12 30 8 25 15 16 9 MIN. QNH PRESSURE IN HPA 992.6 1006.8 1001.8 999.1 1000.3 1000.9 999.1 997.3 999.1 1009.1 1015.9 1001.2 992.6 DAY 19 23 11 7 26 8 7 3 7 10 21 21 MEAN QFF PRESSURE IN HPA 1015.0 1016.0 1013.9 1007.7 1008.6 1006.2 1004.7 1005.3 1008.8 1017.4 1020.9 1016.6 1011.8 MAX. QFF PRESSURE IN HPA 1027.5 1033.9 1023.8 1017.1 1018.7 1015.8 1010.2 1010.5 1017.6 1024.9 1030.3 1029.5 1033.9 DAY 14 29 1 1 4 12 30 8 25 15 16 9 MIN. QFF PRESSURE IN HPA 993.0 1007.1 1002.1 999.3 1000.4 1001.0 999.2 997.4 999.2 1009.3 1016.3 1001.6 993.0 DAY 19 23 11 7 26 8 7 3 7 10 21 21 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1010.2 1010.6 1008.1 1002.2 1003.5 1001.1 999.5 999.9 1003.6 1012.5 1015.9 1011.6 1006.6 MAX. QFE PRESSURE IN HPA 1022.9 1027.4 1018.3 1011.3 1015.8 1013.3 1005.2 1005.3 1013.0 1019.8 1026.1 1024.5 1027.4 DAY 14 29 26 1 4 12 30 8 25 15 16 9 MIN. QFE PRESSURE IN HPA 988.8 1000.9 996.4 993.1 994.6 996.0 993.3 992.4 993.8 1003.8 1010.4 999.9 988.8 DAY 19 23 11 7 26 8 7 3 7 10 12 21 MEAN QNH PRESSURE IN HPA 1013.7 1014.1 1011.7 1005.7 1007.0 1004.6 1003.0 1003.4 1007.1 1016.0 1019.5 1015.1 1010.1 MAX. QNH PRESSURE IN HPA 1026.5 1031.0 1021.9 1014.8 1019.3 1016.8 1008.7 1008.8 1016.5 1023.4 1029.7 1028.1 1031.0 DAY 14 29 26 1 4 12 30 8 25 15 16 9 MIN. QNH PRESSURE IN HPA 992.3 1004.4 999.9 996.6 998.1 999.5 996.8 995.9 997.3 1007.3 1013.9 1003.4 992.3 DAY 19 23 11 7 26 8 7 3 7 10 12 21 MEAN QFF PRESSURE IN HPA 1014.2 1014.5 1012.0 1005.9 1007.2 1004.7 1003.1 1003.5 1007.3 1016.3 1019.8 1015.5 1010.3 MAX. QFF PRESSURE IN HPA 1026.9 1031.4 1022.2 1015.2 1019.7 1017.1 1008.8 1008.9 1016.8 1023.7 1030.0 1028.5 1031.4 DAY 14 29 26 1 4 12 30 8 25 15 16 9 MIN. QFF PRESSURE IN HPA 992.7 1004.7 1000.2 996.8 998.2 999.6 996.8 995.9 997.4 1007.5 1014.3 1003.8 992.7 DAY 19 23 11 7 26 18 7 3 7 10 12 21 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1010.9 1011.1 1008.3 1002.2 1003.3 1001.0 999.1 999.7 1003.9 1012.9 1016.5 1012.2 1006.7 MAX. QFE PRESSURE IN HPA 1023.0 1026.6 1019.3 1011.3 1015.8 1013.0 1004.2 1004.8 1012.8 1020.2 1026.4 1025.0 1026.6 DAY 14 29 26 1 4 12 30 7 25 15 16 9 MIN. QFE PRESSURE IN HPA 992.7 1001.2 999.0 993.5 994.6 994.7 992.0 991.5 994.3 1004.6 1009.7 1003.1 991.5 DAY 19 23 10 7 26 7 7 2 7 10 12 19 MEAN QNH PRESSURE IN HPA 1014.4 1014.6 1011.8 1005.7 1006.9 1004.5 1002.6 1003.2 1007.4 1016.4 1020.0 1015.7 1010.3 MAX. QNH PRESSURE IN HPA 1026.6 1030.2 1022.9 1014.8 1019.3 1016.5 1007.7 1008.3 1016.3 1023.8 1030.0 1028.6 1030.2 DAY 14 29 26 1 4 12 30 7 25 15 16 9 MIN. QNH PRESSURE IN HPA 996.2 1004.7 1002.5 997.0 998.1 998.2 995.5 995.0 997.8 1008.1 1013.2 1006.6 995.0 DAY 19 23 10 7 26 7 7 2 7 10 12 19 MEAN QFF PRESSURE IN HPA 1014.8 1015.0 1012.2 1006.0 1007.1 1004.6 1002.7 1003.3 1007.6 1016.7 1020.4 1016.2 1010.5 MAX. QFF PRESSURE IN HPA 1027.0 1030.7 1023.3 1015.2 1019.7 1016.8 1007.8 1008.4 1016.6 1024.1 1030.4 1029.0 1030.7 DAY 14 29 26 1 4 12 30 7 25 15 16 9 MIN. QFF PRESSURE IN HPA 996.6 1005.1 1002.9 997.2 998.2 998.3 995.6 995.0 997.9 1008.3 1013.6 1007.0 995.0 DAY 19 23 10 7 26 7 7 2 7 11 12 19 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1011.5 1012.0 1009.4 1003.4 1004.7 1002.3 1000.4 1001.3 1005.3 1013.6 1017.0 1012.7 1007.8 MAX. QFE PRESSURE IN HPA 1023.4 1026.8 1021.1 1012.6 1017.6 1013.8 1005.3 1006.4 1012.8 1020.1 1027.1 1025.5 1027.1 DAY 14 29 26 1 4 12 30 7 25 15 16 9 MIN. QFE PRESSURE IN HPA 992.1 1003.5 999.8 996.5 995.2 995.2 993.0 992.1 996.4 1005.7 1010.8 1004.3 992.1 DAY 20 22 18 21 26 4 7 2 7 11 12 19 MEAN QNH PRESSURE IN HPA 1015.0 1015.5 1012.9 1007.0 1008.2 1005.8 1003.9 1004.8 1008.8 1017.2 1020.5 1016.2 1011.3 MAX. QNH PRESSURE IN HPA 1027.0 1030.4 1024.7 1016.1 1021.2 1017.3 1008.8 1009.9 1016.3 1023.7 1030.7 1029.1 1030.7 DAY 14 29 26 1 4 12 30 7 25 15 16 9 MIN. QNH PRESSURE IN HPA 995.6 1007.0 1003.3 1000.0 998.7 998.7 996.5 995.6 999.9 1009.2 1014.3 1007.8 995.6 DAY 20 22 18 21 26 4 7 2 7 11 12 19 MEAN QFF PRESSURE IN HPA 1015.5 1016.0 1013.3 1007.2 1008.4 1005.9 1004.0 1004.9 1009.0 1017.5 1020.9 1016.6 1011.6 MAX. QFF PRESSURE IN HPA 1027.4 1030.9 1025.1 1016.5 1021.5 1017.6 1008.9 1010.0 1016.6 1024.0 1031.1 1029.5 1031.1 DAY 14 29 26 1 4 12 30 7 25 15 16 9 MIN. QFF PRESSURE IN HPA 996.0 1007.4 1003.7 1000.2 998.8 998.8 996.5 995.6 1000.0 1009.4 1014.7 1008.2 995.6 DAY 20 22 18 21 26 7 7 2 7 11 12 19 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1011.3 1012.2 1009.6 1003.7 1005.1 1002.7 1000.6 1001.5 1005.3 1013.6 1017.0 1012.6 1007.9 MAX. QFE PRESSURE IN HPA 1023.0 1028.2 1021.4 1012.9 1017.4 1013.4 1005.3 1006.8 1012.0 1019.3 1026.5 1025.2 1028.2 DAY 13 28 26 1 4 12 25 8 28 15 16 9 MIN. QFE PRESSURE IN HPA 992.1 1003.5 999.6 996.8 995.2 995.3 993.7 991.7 996.5 1005.4 1010.7 1002.9 991.7 DAY 20 22 18 9 26 7 7 2 6 10 30 19 MEAN QNH PRESSURE IN HPA 1014.8 1015.8 1013.1 1007.2 1008.6 1006.2 1004.1 1005.0 1008.8 1017.1 1020.5 1016.1 1011.4 MAX. QNH PRESSURE IN HPA 1026.6 1031.8 1025.0 1016.4 1020.9 1016.9 1008.8 1010.3 1015.5 1022.9 1030.1 1028.8 1031.8 DAY 13 28 26 1 4 12 25 8 28 15 16 9 MIN. QNH PRESSURE IN HPA 995.6 1007.0 1003.1 1000.3 998.7 998.8 997.2 995.2 1000.0 1008.9 1014.2 1006.4 995.2 DAY 20 22 18 9 26 7 7 2 6 10 30 19 MEAN QFF PRESSURE IN HPA 1015.3 1016.2 1013.5 1007.5 1008.8 1006.3 1004.2 1005.1 1009.0 1017.4 1020.9 1016.5 1011.7 MAX. QFF PRESSURE IN HPA 1027.0 1032.2 1025.4 1016.8 1021.3 1017.2 1008.9 1010.4 1015.8 1023.2 1030.4 1029.2 1032.2 DAY 13 28 26 1 4 12 25 8 28 15 16 9 MIN. QFF PRESSURE IN HPA 996.0 1007.4 1003.5 1000.6 998.8 998.9 997.2 995.2 1000.1 1009.1 1014.6 1006.8 995.2 DAY 20 22 18 9 26 7 7 2 6 10 30 19 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.1 6.1 10.5 14.7 19.2 24.5 27.5 27.0 22.6 14.5 9.9 6.0 15.5 MINIMUN AIR TEMPERATURE (C) -0.3 1.4 5.7 9.7 13.6 17.5 21.1 21.3 17.4 10.9 6.0 2.9 10.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 3 19 18 0 0 0 0 40 DAYS WITH MINIMUM TEMP. <=-4 4 0 0 0 0 0 0 0 0 0 0 0 4 DAYS WITH FREEZING MIN.<= 0 17 10 0 0 0 0 0 0 0 0 3 4 34 TEMPERATURE RECORDS LOWEST(C) -6.8 -1.4 0.6 6.2 7.4 13.0 16.6 16.0 13.0 2.6 -1.6 -2.6 -6.8 DAY 28 1 4 1 26 2 1 13 20 26 24 22 MAXIMUM AIR TEMPERATURE (C) 8.1 12.3 17.0 20.8 25.8 32.4 34.7 33.4 28.6 19.2 15.5 11.1 21.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 1 23 30 26 11 0 0 0 92 DAYS WITH MAXIMUM TEMP. <= 0 2 0 0 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS HIGHEST(C) 16.4 22.0 24.6 30.2 32.2 37.0 39.0 38.2 34.0 28.4 27.6 17.4 39.0 DAY 1 28 27 24 14 22 30 2 26 6 15 25 DIF. BETWEEN (MAX.-MIN.) (C) 8.4 10.9 11.3 11.1 12.2 14.9 13.6 12.1 11.2 8.3 9.5 8.2 11.0 MEAN DAILY TEMP. (MDT) (C) 3.9 6.9 11.4 15.3 19.7 24.9 27.9 27.4 23.0 15.0 10.7 7.0 16.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.3 7.9 119.8 215.1 197.2 70.1 0.5 0.0 0.0 610.9 HEATING DEG. DAYS(BASE 18 0C) 437.1 311.0 205.8 87.4 7.2 0.0 0.0 0.0 0.5 102.7 218.3 341.7 1711.7 DEWPOINT (MEAN C) -0.2 2.5 6.3 10.3 12.6 14.0 16.3 17.4 15.3 10.6 5.5 2.7 9.4 MIXING RATIO (G/KG) 3.81 4.60 6.04 7.92 9.31 10.21 11.96 12.75 11.18 8.13 5.87 4.65 8.04 VAPOUR PRESSURE (HPA) 6.19 7.41 9.68 12.65 14.78 16.15 18.86 20.11 17.73 13.03 9.43 7.50 12.79 SATURATION DEF. (HPA) 1.76 2.37 3.69 4.75 8.24 16.02 19.20 16.79 10.60 4.17 3.42 2.08 7.76 RELATIVE HUMIDITY (MEAN %) 81 80 78 77 69 56 54 59 66 80 76 81 71 RELATIVE HUMIDITY (MAX. %) 92 95 94 94 91 82 80 81 85 94 92 93 89 RELATIVE HUMIDITY (MIN. %) 63 59 58 55 45 31 31 39 44 60 55 62 50 RELATIVE HUMIDITY (MEAN% 03UTC) 87 92 92 91 87 76 76 77 82 91 89 89 86 RELATIVE HUMIDITY (MEAN% 09UTC) 69 66 64 62 50 39 41 44 52 66 59 68 57 RELATIVE HUMIDITY (MEAN% 15UTC) 81 75 68 68 58 38 35 47 55 77 77 83 64 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 9.0 5.5 35.5 46.5 17.1 0.0 0.0 7.7 4.0 63.6 22.8 32.7 244.4 DAYS WITH PRECIPITATION >=10 0 0 2 1 0 0 0 0 0 4 1 0 8 DAYS WITH PRECIPITATION >= 5 0 0 3 4 0 0 0 1 0 5 1 4 18 DAYS WITH PRECIPITATION >= 1 2 2 4 8 6 0 0 2 1 6 2 6 39 DAYS WITH PRECIPITATION 9 5 6 10 9 0 0 3 1 10 5 9 67 GREATEST DAILY PRECIPITATION 4.3 3.0 12.0 14.4 4.6 0.0 0.0 5.6 4.0 15.0 20.0 9.0 20.0 DAY 16 21 17 9 25 ** ** 27 10 25 18 2 DAY WITH THUNDER STORM 0 0 0 1 4 0 0 1 0 1 0 0 7 DAYS WITH SNOW OR SLEET 6 1 0 0 0 0 0 0 0 0 1 0 8 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 90 90 90 90 90 90 90 90 90 90 225 225 90 PREVAILING WIND SPEED(KNOTS) 11.2 8.9 11.8 8.8 9.7 10.1 7.8 9.2 9.0 7.3 7.2 6.2 9.3 PREVAILING WIND PERCENT 10.9 13.8 17.3 13.3 14.9 21.3 25.8 24.2 17.9 12.1 6.3 8.9 15.0 CALMS PERCENT OF WIND 71.4 66.5 68.1 74.6 60.5 63.3 62.9 62.1 70.0 79.0 83.8 75.4 69.8 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 133 109 100 101 73 89 94 102 97 104 176 180 99 VECTOR WIND MAGNITUDE(KNOTS) 1.0 1.6 2.0 1.4 1.9 2.7 2.5 3.3 2.3 1.0 0.2 0.4 1.6 WIND STEADINESES (MEAN %) 38.5 59.3 60.6 66.7 54.3 79.4 89.3 91.7 85.2 66.7 16.7 23.5 61.5 WIND SPEED (MEAN KNOTS) 2.6 2.7 3.3 2.1 3.5 3.4 2.8 3.6 2.7 1.5 1.2 1.7 2.6 FASTEST WIND DIRECTION 90 150 90 120 90 110 90 120 110 130 240 110 90 FASTEST WIND SPEED (KNOTS) 16 23 29 16 19 19 14 29 19 12 12 19 29 DAY 14 21 30 4 16 29 12 16 27 2 19 20 DAYS WITH SKY CLEAR (0-2)/8 15 10 11 8 16 27 26 24 22 14 13 9 195 DAYS WITH P.CLOUDY (3-6)/8 5 10 12 15 12 2 3 7 5 5 10 11 97 DAYS WITH CLOUDY (7-8)/8 11 8 8 7 3 1 2 0 3 12 7 11 73 DAYS WITH VISIBILITY =< 2 KM 2 4 0 3 2 2 0 1 1 2 6 5 28 DURATION OF SUNSHINE HOURS 131.1 131.9 163.0 190.5 251.2 339.6 316.5 268.6 224.0 150.8 148.6 119.4 2435.2 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1017.4 1009.5 1008.0 1006.1 1003.0 1001.2 1000.8 1002.2 1005.4 1011.3 1010.1 1011.7 1007.2 MAX. QFE PRESSURE IN HPA 1031.0 1026.6 1024.1 1023.7 1015.3 1009.9 1006.7 1011.4 1018.2 1025.7 1019.3 1023.3 1031.0 DAY-HOUR 26- 9 9- 6 1- 9 1- 9 18- 6 11- 3 1- 3 5- 6 19-18 27- 6 23- 6 2-21 MIN. QFE PRESSURE IN HPA 1005.9 986.1 991.0 996.8 989.8 986.4 992.5 992.6 994.3 997.0 995.7 997.3 986.1 DAY-HOUR 10-18 21- 3 24- 0 12- 0 8-15 17-12 9-12 30-15 4-15 6-12 17-12 19-15 MEAN QNH PRESSURE IN HPA 1020.9 1013.0 1011.5 1009.6 1006.5 1004.6 1004.3 1005.7 1008.9 1014.8 1013.7 1015.2 1010.7 MAX. QNH PRESSURE IN HPA 1034.6 1030.2 1027.7 1027.3 1018.8 1013.4 1010.2 1014.9 1021.8 1029.3 1022.9 1026.9 1034.6 DAY-HOUR 26- 9 9- 6 1- 9 1- 9 18- 6 11- 3 1- 3 5- 6 19-18 27- 6 23- 6 2-21 MIN. QNH PRESSURE IN HPA 1009.4 989.6 994.5 1000.3 993.3 989.9 996.0 996.1 997.8 1000.5 999.2 1000.8 989.6 DAY-HOUR 10-18 21- 3 24- 0 12- 0 8-15 17-12 9-12 30-15 4-15 6-12 17-12 19-15 MEAN QFF PRESSURE IN HPA 1021.4 1013.4 1011.8 1009.9 1006.7 1004.8 1004.4 1005.8 1009.1 1015.1 1014.0 1015.6 1011.0 MAX. QFF PRESSURE IN HPA 1035.1 1030.6 1028.0 1027.6 1019.1 1013.6 1010.4 1015.1 1022.0 1029.7 1023.3 1027.3 1035.1 DAY-HOUR 26- 9 9- 6 1- 9 1- 9 18- 6 11- 3 1- 3 5- 6 19-18 27- 6 23- 6 2-21 MIN. QFF PRESSURE IN HPA 1009.8 989.9 994.7 1000.5 993.4 989.9 996.1 996.2 997.9 1000.7 999.5 1001.2 989.9 DAY-HOUR 10-18 21- 3 24- 0 12- 0 8-15 17-12 9-12 30-15 4-15 6-12 17-12 19-15 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1017.3 1009.5 1007.7 1006.2 1003.2 1001.5 1001.1 1002.4 1005.6 1011.1 1009.9 1011.8 1007.3 MAX. QFE PRESSURE IN HPA 1029.1 1025.8 1023.2 1020.2 1013.5 1008.6 1005.5 1009.8 1016.3 1023.6 1017.7 1023.3 1029.1 DAY 26 9 11 1 18 11 1 5 19 27 23 3 MIN. QFE PRESSURE IN HPA 1006.9 987.7 991.0 996.8 992.2 991.5 994.8 994.0 997.4 1000.0 1000.8 1000.2 987.7 DAY 1 21 24 12 8 6 19 31 8 6 17 20 MEAN QNH PRESSURE IN HPA 1020.9 1013.1 1011.2 1009.8 1006.7 1005.0 1004.6 1005.9 1009.1 1014.6 1013.4 1015.4 1010.8 MAX. QNH PRESSURE IN HPA 1032.7 1029.4 1026.8 1023.8 1017.0 1012.1 1009.0 1013.3 1019.8 1027.2 1021.3 1026.9 1032.7 DAY 26 9 11 1 18 11 1 5 19 27 23 3 MIN. QNH PRESSURE IN HPA 1010.4 991.2 994.5 1000.3 995.7 995.0 998.3 997.5 1000.9 1003.5 1004.3 1003.7 991.2 DAY 1 21 24 12 8 6 19 31 8 6 17 20 MEAN QFF PRESSURE IN HPA 1021.3 1013.5 1011.5 1010.0 1006.9 1005.1 1004.7 1006.0 1009.3 1014.9 1013.7 1015.8 1011.1 MAX. QFF PRESSURE IN HPA 1033.2 1029.8 1027.2 1024.1 1017.3 1012.3 1009.2 1013.4 1020.0 1027.6 1021.7 1027.3 1033.2 DAY 26 9 11 1 18 11 1 5 19 27 23 3 MIN. QFF PRESSURE IN HPA 1010.8 991.5 994.7 1000.5 995.9 995.1 998.4 997.6 1001.0 1003.7 1004.6 1004.0 991.5 DAY 1 21 24 12 8 6 19 31 8 6 17 20 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1017.4 1009.4 1008.1 1006.7 1003.6 1002.4 1001.8 1003.2 1006.2 1011.4 1010.3 1011.9 1007.7 MAX. QFE PRESSURE IN HPA 1029.1 1026.2 1023.1 1021.7 1014.2 1009.9 1006.7 1010.9 1016.9 1024.3 1018.0 1022.8 1029.1 DAY 26 9 11 1 18 11 1 5 19 27 23 3 MIN. QFE PRESSURE IN HPA 1008.0 986.1 991.7 996.8 992.2 992.4 996.1 994.3 998.1 999.9 999.3 1000.8 986.1 DAY 1 21 24 12 8 17 18 31 8 6 17 19 MEAN QNH PRESSURE IN HPA 1020.9 1012.9 1011.6 1010.2 1007.1 1005.9 1005.3 1006.7 1009.7 1014.9 1013.8 1015.4 1011.2 MAX. QNH PRESSURE IN HPA 1032.7 1029.8 1026.7 1025.3 1017.7 1013.4 1010.2 1014.4 1020.4 1027.9 1021.6 1026.4 1032.7 DAY 26 9 11 1 18 11 1 5 19 27 23 3 MIN. QNH PRESSURE IN HPA 1011.5 989.6 995.2 1000.3 995.7 995.9 999.6 997.8 1001.6 1003.4 1002.8 1004.3 989.6 DAY 1 21 24 12 8 17 18 31 8 6 17 19 MEAN QFF PRESSURE IN HPA 1021.4 1013.4 1012.0 1010.5 1007.3 1006.1 1005.4 1006.8 1009.8 1015.2 1014.2 1015.8 1011.5 MAX. QFF PRESSURE IN HPA 1033.2 1030.2 1027.1 1025.6 1018.0 1013.6 1010.4 1014.5 1020.7 1028.3 1022.0 1026.8 1033.2 DAY 26 9 11 1 18 11 1 5 19 27 23 3 MIN. QFF PRESSURE IN HPA 1011.9 989.9 995.4 1000.6 995.9 996.0 999.7 997.9 1001.7 1003.6 1003.1 1004.7 989.9 DAY 1 21 24 12 8 17 18 31 8 6 17 19 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1018.4 1010.3 1009.1 1007.3 1004.0 1002.6 1002.1 1003.6 1006.8 1012.4 1011.4 1012.8 1008.4 MAX. QFE PRESSURE IN HPA 1030.7 1026.6 1023.5 1023.4 1015.3 1009.9 1006.5 1011.4 1018.0 1025.7 1019.3 1023.2 1030.7 DAY 26 9 11 1 18 11 1 5 19 27 23 3 MIN. QFE PRESSURE IN HPA 1010.2 988.6 993.3 997.1 992.4 991.7 995.6 996.2 998.5 1000.0 999.1 1001.5 988.6 DAY 1 21 24 12 8 17 18 31 8 6 17 19 MEAN QNH PRESSURE IN HPA 1021.9 1013.8 1012.6 1010.8 1007.5 1006.2 1005.6 1007.1 1010.3 1015.9 1015.0 1016.3 1011.9 MAX. QNH PRESSURE IN HPA 1034.3 1030.2 1027.1 1027.0 1018.8 1013.4 1010.0 1014.9 1021.6 1029.3 1022.9 1026.8 1034.3 DAY 26 9 11 1 18 11 1 5 19 27 23 3 MIN. QNH PRESSURE IN HPA 1013.7 992.1 996.8 1000.6 995.9 995.2 999.1 999.7 1002.0 1003.5 1002.6 1005.0 992.1 DAY 1 21 24 12 8 17 18 31 8 6 17 19 MEAN QFF PRESSURE IN HPA 1022.4 1014.3 1013.0 1011.1 1007.7 1006.3 1005.7 1007.2 1010.5 1016.2 1015.3 1016.8 1012.2 MAX. QFF PRESSURE IN HPA 1034.8 1030.6 1027.5 1027.4 1019.1 1013.6 1010.2 1015.1 1021.8 1029.7 1023.3 1027.2 1034.8 DAY 26 9 11 1 18 11 1 5 19 27 23 3 MIN. QFF PRESSURE IN HPA 1014.1 992.5 997.1 1000.9 996.1 995.3 999.2 999.8 1002.1 1003.7 1002.9 1005.4 992.5 DAY 1 21 24 12 8 17 18 31 8 6 17 19 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1017.7 1009.8 1008.3 1006.6 1003.0 1001.4 1001.1 1002.4 1005.6 1011.4 1010.3 1011.7 1007.4 MAX. QFE PRESSURE IN HPA 1031.0 1026.3 1024.1 1023.7 1014.7 1008.7 1005.2 1010.4 1017.7 1024.7 1017.7 1022.3 1031.0 DAY 26 9 1 1 18 11 15 5 19 27 23 3 MIN. QFE PRESSURE IN HPA 1008.5 992.2 992.4 996.8 991.6 989.2 994.4 994.4 997.0 998.5 996.8 999.8 989.2 DAY 10 21 24 12 8 17 9 30 8 6 17 19 MEAN QNH PRESSURE IN HPA 1021.3 1013.3 1011.9 1010.1 1006.5 1004.9 1004.6 1005.9 1009.1 1014.9 1013.8 1015.2 1011.0 MAX. QNH PRESSURE IN HPA 1034.6 1029.9 1027.7 1027.3 1018.2 1012.2 1008.7 1013.9 1021.3 1028.3 1021.3 1025.9 1034.6 DAY 26 9 1 1 18 11 15 5 19 27 23 3 MIN. QNH PRESSURE IN HPA 1012.0 995.7 995.9 1000.3 995.1 992.7 997.9 997.9 1000.5 1002.0 1000.3 1003.3 992.7 DAY 10 21 24 12 8 17 9 30 8 6 17 19 MEAN QFF PRESSURE IN HPA 1021.7 1013.7 1012.2 1010.3 1006.7 1005.1 1004.7 1006.0 1009.2 1015.2 1014.1 1015.6 1011.2 MAX. QFF PRESSURE IN HPA 1035.1 1030.3 1028.0 1027.6 1018.5 1012.4 1008.8 1014.0 1021.5 1028.7 1021.6 1026.3 1035.1 DAY 26 9 1 1 18 11 15 5 19 27 23 3 MIN. QFF PRESSURE IN HPA 1012.4 996.1 996.1 1000.5 995.2 992.8 998.0 998.0 1000.6 1002.2 1000.6 1003.7 992.8 DAY 10 21 24 12 8 17 9 30 8 6 17 19 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1016.5 1008.4 1006.9 1005.1 1001.8 999.7 999.6 1000.9 1004.0 1010.4 1009.2 1010.7 1006.1 MAX. QFE PRESSURE IN HPA 1030.1 1024.5 1022.9 1023.1 1013.0 1006.9 1004.2 1008.4 1017.3 1023.7 1015.9 1022.2 1030.1 DAY 26 9 1 1 18 10 2 5 19 27 23 2 MIN. QFE PRESSURE IN HPA 1006.2 993.8 991.8 997.2 990.3 986.4 992.5 992.7 995.3 997.0 995.7 997.5 986.4 DAY 10 20 24 12 8 17 9 30 4 6 17 19 MEAN QNH PRESSURE IN HPA 1020.0 1011.9 1010.4 1008.6 1005.3 1003.2 1003.1 1004.3 1007.5 1013.9 1012.7 1014.3 1009.6 MAX. QNH PRESSURE IN HPA 1033.7 1028.1 1026.5 1026.7 1016.5 1010.4 1007.7 1011.9 1020.8 1027.3 1019.4 1025.8 1033.7 DAY 26 9 1 1 18 10 2 5 19 27 23 2 MIN. QNH PRESSURE IN HPA 1009.7 997.3 995.3 1000.7 993.8 989.9 996.0 996.2 998.8 1000.5 999.2 1001.0 989.9 DAY 10 20 24 12 8 17 9 30 4 6 17 19 MEAN QFF PRESSURE IN HPA 1020.5 1012.3 1010.7 1008.8 1005.5 1003.4 1003.2 1004.4 1007.7 1014.2 1013.0 1014.7 1009.9 MAX. QFF PRESSURE IN HPA 1034.2 1028.5 1026.8 1027.0 1016.8 1010.6 1007.9 1012.0 1021.1 1027.7 1019.8 1026.2 1034.2 DAY 26 9 1 1 18 10 2 5 19 27 23 2 MIN. QFF PRESSURE IN HPA 1010.1 997.7 995.5 1001.0 993.9 989.9 996.1 996.3 998.9 1000.7 999.5 1001.3 989.9 DAY 10 20 24 12 8 17 9 30 4 6 17 19 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1016.9 1008.9 1007.2 1004.9 1001.7 999.5 999.4 1000.6 1004.1 1010.7 1009.8 1011.3 1006.3 MAX. QFE PRESSURE IN HPA 1030.5 1025.2 1023.2 1023.1 1012.4 1006.5 1003.8 1008.0 1017.3 1023.0 1016.7 1022.6 1030.5 DAY 26 9 10 1 17 10 2 5 19 27 19 2 MIN. QFE PRESSURE IN HPA 1006.1 992.2 991.9 998.0 989.8 988.3 992.5 992.6 994.3 998.6 998.8 997.3 988.3 DAY 10 20 23 11 8 6 9 30 4 6 17 19 MEAN QNH PRESSURE IN HPA 1020.5 1012.4 1010.7 1008.4 1005.2 1003.0 1002.9 1004.1 1007.6 1014.2 1013.4 1014.9 1009.8 MAX. QNH PRESSURE IN HPA 1034.1 1028.8 1026.8 1026.7 1015.9 1010.0 1007.3 1011.5 1020.8 1026.6 1020.2 1026.2 1034.1 DAY 26 9 10 1 17 10 2 5 19 27 19 2 MIN. QNH PRESSURE IN HPA 1009.6 995.7 995.4 1001.5 993.3 991.8 996.0 996.1 997.8 1002.1 1002.3 1000.8 991.8 DAY 10 20 23 11 8 6 9 30 4 6 17 19 MEAN QFF PRESSURE IN HPA 1020.9 1012.9 1011.1 1008.7 1005.4 1003.2 1003.0 1004.2 1007.8 1014.5 1013.7 1015.3 1010.1 MAX. QFF PRESSURE IN HPA 1034.6 1029.2 1027.2 1027.0 1016.2 1010.2 1007.5 1011.6 1021.1 1027.0 1020.7 1026.6 1034.6 DAY 26 9 10 1 17 10 2 5 19 27 19 2 MIN. QFF PRESSURE IN HPA 1010.0 996.1 995.7 1001.8 993.4 991.9 996.1 996.2 997.9 1002.3 1002.6 1001.2 991.9 DAY 10 20 23 11 8 6 9 30 4 6 17 19 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1017.5 1009.7 1008.3 1006.2 1003.2 1000.9 1000.8 1002.1 1005.4 1011.4 1010.3 1011.8 1007.3 MAX. QFE PRESSURE IN HPA 1030.4 1025.4 1023.8 1022.5 1013.6 1007.9 1005.7 1009.1 1018.2 1023.4 1016.5 1023.1 1030.4 DAY 26 9 10 1 17 10 15 11 19 26 19 2 MIN. QFE PRESSURE IN HPA 1005.9 991.7 992.2 998.6 991.8 990.6 994.3 993.6 997.4 1000.8 1001.1 997.8 990.6 DAY 10 20 23 11 8 6 9 30 7 24 21 19 MEAN QNH PRESSURE IN HPA 1021.0 1013.3 1011.8 1009.7 1006.7 1004.4 1004.3 1005.6 1009.0 1015.0 1013.8 1015.3 1010.8 MAX. QNH PRESSURE IN HPA 1034.0 1029.0 1027.4 1026.1 1017.1 1011.4 1009.2 1012.6 1021.8 1027.0 1020.0 1026.7 1034.0 DAY 26 9 10 1 17 10 15 11 19 26 19 2 MIN. QNH PRESSURE IN HPA 1009.4 995.2 995.7 1002.1 995.3 994.1 997.8 997.1 1000.9 1004.3 1004.6 1001.3 994.1 DAY 10 20 23 11 8 6 9 30 7 24 21 19 MEAN QFF PRESSURE IN HPA 1021.5 1013.7 1012.2 1010.0 1006.9 1004.5 1004.4 1005.7 1009.1 1015.2 1014.2 1015.7 1011.1 MAX. QFF PRESSURE IN HPA 1034.5 1029.4 1027.8 1026.5 1017.4 1011.6 1009.3 1012.7 1022.0 1027.4 1020.5 1027.1 1034.5 DAY 26 9 10 1 17 10 15 11 19 26 19 2 MIN. QFF PRESSURE IN HPA 1009.8 995.6 996.0 1002.4 995.4 994.2 997.9 997.2 1001.0 1004.6 1005.0 1001.7 994.2 DAY 10 20 23 11 8 17 9 30 7 24 21 19 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1017.4 1009.8 1008.2 1006.0 1003.5 1001.2 1000.9 1002.4 1005.6 1011.4 1010.1 1011.7 1007.4 MAX. QFE PRESSURE IN HPA 1029.5 1025.0 1023.6 1021.2 1013.5 1008.5 1005.1 1008.8 1017.2 1023.6 1017.0 1023.3 1029.5 DAY 26 9 10 1 17 10 15 4 19 26 22 2 MIN. QFE PRESSURE IN HPA 1007.3 989.2 992.0 998.0 992.3 991.3 994.8 994.0 997.4 1000.7 1000.5 999.1 989.2 DAY 10 20 23 11 8 6 18 30 7 24 21 19 MEAN QNH PRESSURE IN HPA 1021.0 1013.3 1011.7 1009.5 1007.0 1004.7 1004.4 1005.9 1009.2 1014.9 1013.7 1015.3 1010.9 MAX. QNH PRESSURE IN HPA 1033.1 1028.6 1027.2 1024.8 1017.0 1012.0 1008.6 1012.3 1020.7 1027.2 1020.5 1026.9 1033.1 DAY 26 9 10 1 17 10 15 4 19 26 22 2 MIN. QNH PRESSURE IN HPA 1010.8 992.7 995.5 1001.5 995.8 994.8 998.3 997.5 1000.9 1004.2 1004.0 1002.6 992.7 DAY 10 20 23 11 8 6 18 30 7 24 21 19 MEAN QFF PRESSURE IN HPA 1021.4 1013.7 1012.1 1009.8 1007.2 1004.8 1004.5 1006.0 1009.3 1015.2 1014.0 1015.7 1011.1 MAX. QFF PRESSURE IN HPA 1033.6 1029.0 1027.6 1025.1 1017.3 1012.2 1008.7 1012.4 1021.0 1027.6 1021.0 1027.3 1033.6 DAY 26 9 10 1 17 10 15 4 19 26 22 2 MIN. QFF PRESSURE IN HPA 1011.2 993.0 995.7 1001.8 995.9 994.9 998.4 997.6 1001.0 1004.5 1004.3 1002.9 993.0 DAY 10 20 23 11 8 6 18 30 7 24 21 19 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.5 6.2 10.3 11.7 16.6 23.3 27.9 26.4 23.7 17.8 10.3 0.0 14.7 MINIMUN AIR TEMPERATURE (C) -1.3 0.7 5.4 8.3 11.8 17.1 20.5 20.9 17.6 13.6 5.5 -2.7 9.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 2 12 16 1 0 0 0 31 DAYS WITH MINIMUM TEMP. <=-4 6 1 0 0 0 0 0 0 0 0 0 9 16 DAYS WITH FREEZING MIN.<= 0 21 13 1 0 0 0 0 0 0 0 1 25 61 TEMPERATURE RECORDS LOWEST(C) -5.6 -4.4 -0.2 4.0 6.4 12.6 14.4 16.2 14.6 5.4 -1.0 -8.4 -8.4 DAY 11 17 10 9 2 4 2 14 23 23 30 28 MAXIMUM AIR TEMPERATURE (C) 8.2 13.1 16.1 16.1 22.3 30.0 35.7 32.5 30.4 23.4 16.6 3.7 20.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 4 17 31 23 23 1 0 0 99 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 5 5 TEMPERATURE RECORDS HIGHEST(C) 15.4 20.6 27.4 21.6 33.4 35.6 39.0 37.8 33.4 30.4 23.2 12.4 39.0 DAY 30 26 8 29 31 26 14 5 6 12 4 31 DIF. BETWEEN (MAX.-MIN.) (C) 9.5 12.4 10.7 7.8 10.5 12.9 15.2 11.6 12.8 9.8 11.1 6.4 10.9 MEAN DAILY TEMP. (MDT) (C) 3.5 6.9 10.8 12.2 17.0 23.6 28.1 26.7 24.0 18.5 11.0 0.5 15.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 13.2 81.6 218.8 176.8 90.1 10.2 0.0 0.0 590.7 HEATING DEG. DAYS(BASE 18 0C) 450.7 310.3 224.6 175.1 68.0 0.0 0.0 0.0 0.0 35.7 209.5 543.8 2017.7 DEWPOINT (MEAN C) -1.4 1.4 5.9 8.7 12.8 15.5 17.4 18.6 17.8 13.7 5.9 -2.6 9.5 MIXING RATIO (G/KG) 3.46 4.28 5.89 7.13 9.45 11.26 12.73 13.76 12.99 10.06 5.85 3.18 8.34 VAPOUR PRESSURE (HPA) 5.60 6.91 9.44 11.39 15.04 17.81 20.07 21.64 20.56 16.03 9.44 5.16 13.26 SATURATION DEF. (HPA) 2.04 3.05 3.67 2.60 4.86 11.85 19.12 13.90 9.63 5.05 3.59 1.14 6.71 RELATIVE HUMIDITY (MEAN %) 77 74 77 84 80 65 56 65 72 78 76 84 74 RELATIVE HUMIDITY (MAX. %) 90 90 93 97 97 87 81 84 91 93 89 94 91 RELATIVE HUMIDITY (MIN. %) 56 52 57 66 59 42 33 47 51 59 57 69 54 RELATIVE HUMIDITY (MEAN% 03UTC) 87 88 88 94 93 83 77 80 88 90 86 89 87 RELATIVE HUMIDITY (MEAN% 09UTC) 63 59 63 72 67 50 42 53 59 63 61 75 61 RELATIVE HUMIDITY (MEAN% 15UTC) 75 67 71 78 71 48 38 51 61 77 77 86 67 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 9.1 6.0 47.2 37.9 87.2 18.0 0.5 5.0 0.6 41.0 2.2 38.4 293.1 DAYS WITH PRECIPITATION >=10 0 0 2 1 2 1 0 0 0 2 0 1 9 DAYS WITH PRECIPITATION >= 5 1 0 3 2 5 1 0 1 0 3 0 1 17 DAYS WITH PRECIPITATION >= 1 1 2 7 7 14 4 0 1 0 4 1 10 51 DAYS WITH PRECIPITATION 3 2 7 12 15 4 2 1 1 4 2 13 66 GREATEST DAILY PRECIPITATION 7.8 4.0 17.2 19.0 30.0 11.0 0.5 5.0 0.6 20.0 1.8 11.0 30.0 DAY 8 27 18 3 6 3 26 28 13 4 26 10 DAY WITH THUNDER STORM 0 0 0 0 5 5 0 2 0 3 0 0 15 DAYS WITH SNOW OR SLEET 1 1 0 0 0 0 0 0 0 0 0 12 14 DAYS WITH DUST 0 0 0 1 0 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 90 270 90 90 90 90 90 90 90 90 90 225 90 PREVAILING WIND SPEED(KNOTS) 11.4 6.9 11.1 8.7 9.7 9.0 9.2 9.8 10.4 8.9 10.4 8.1 9.8 PREVAILING WIND PERCENT 7.3 5.8 14.1 14.6 15.3 18.3 29.8 28.6 18.8 9.7 10.4 15.7 14.9 CALMS PERCENT OF WIND 82.3 75.0 66.9 69.2 72.6 57.1 49.2 45.2 62.1 71.0 66.3 62.1 64.8 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 116 317 104 106 95 84 86 92 83 88 134 186 99 VECTOR WIND MAGNITUDE(KNOTS) 0.8 0.2 1.6 2.4 1.8 2.4 3.5 4.2 2.5 0.7 1.5 1.4 1.7 WIND STEADINESES (MEAN %) 47.1 10.5 48.5 80.0 75.0 60.0 83.3 80.8 71.4 30.4 45.5 37.8 53.1 WIND SPEED (MEAN KNOTS) 1.7 1.9 3.3 3.0 2.4 4.0 4.2 5.2 3.5 2.3 3.3 3.7 3.2 FASTEST WIND DIRECTION 100 330 110 120 120 120 90 110 120 90 120 120 120 FASTEST WIND SPEED (KNOTS) 23 23 29 27 23 31 17 19 19 16 21 19 31 DAY 2 27 12 21 22 28 20 17 13 14 7 1 DAYS WITH SKY CLEAR (0-2)/8 15 14 9 1 11 16 25 20 23 14 15 11 174 DAYS WITH P.CLOUDY (3-6)/8 9 11 12 9 8 10 6 6 5 13 8 7 104 DAYS WITH CLOUDY (7-8)/8 7 3 10 20 12 4 0 5 2 4 7 13 87 DAYS WITH VISIBILITY =< 2 KM 4 6 4 2 7 3 0 0 3 2 0 5 36 DURATION OF SUNSHINE HOURS 141.8 188.5 174.2 103.2 196.6 286.5 354.4 265.9 264.7 193.7 170.6 100.9 2441.0 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1013.6 1011.4 1007.6 1005.8 1006.3 1001.8 1001.2 1000.9 1005.3 1008.5 1013.3 1015.5 1007.6 MAX. QFE PRESSURE IN HPA 1024.1 1026.9 1028.0 1014.5 1017.6 1009.6 1009.2 1011.8 1014.1 1017.1 1022.3 1033.5 1033.5 DAY-HOUR 17-18 18- 6 6- 6 1- 6 16-18 24- 6 3- 6 30- 6 21- 6 22-18 16- 6 2-18 MIN. QFE PRESSURE IN HPA 999.9 991.8 989.5 994.2 993.6 991.5 988.9 990.5 998.1 995.6 997.1 998.7 988.9 DAY-HOUR 7-12 26-12 26-21 7-12 28-15 18-15 24-15 9-15 10-12 21-12 12- 0 21- 3 MEAN QNH PRESSURE IN HPA 1017.1 1015.0 1011.1 1009.3 1009.8 1005.3 1004.7 1004.4 1008.8 1012.0 1016.8 1019.1 1011.1 MAX. QNH PRESSURE IN HPA 1027.7 1030.5 1031.6 1018.0 1021.2 1013.1 1012.7 1015.3 1017.6 1020.6 1025.9 1037.1 1037.1 DAY-HOUR 17-18 18- 6 6- 6 1- 6 16-18 24- 6 3- 6 30- 6 21- 6 22-18 16- 6 2-18 MIN. QNH PRESSURE IN HPA 1003.4 995.3 993.0 997.7 997.1 995.0 992.4 994.0 1001.6 999.1 1000.6 1002.2 992.4 DAY-HOUR 7-12 26-12 26-21 7-12 28-15 18-15 24-15 9-15 10-12 21-12 12- 0 21- 3 MEAN QFF PRESSURE IN HPA 1017.6 1015.4 1011.4 1009.7 1010.0 1005.4 1004.8 1004.5 1008.9 1012.3 1017.2 1019.6 1011.4 MAX. QFF PRESSURE IN HPA 1028.1 1031.0 1032.0 1018.4 1021.5 1013.3 1012.9 1015.5 1017.8 1021.0 1026.3 1037.6 1037.6 DAY-HOUR 17-18 18- 6 10- 6 1- 6 16-18 25- 6 3- 6 30- 6 21- 6 22-18 16- 6 2-18 MIN. QFF PRESSURE IN HPA 1003.8 995.6 993.3 998.0 997.2 995.1 992.5 994.0 1001.7 999.3 1000.8 1002.7 992.5 DAY-HOUR 7-12 26-12 26-21 7-12 28-15 18-15 24-15 9-15 10-12 21-12 12- 0 21- 3 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1013.6 1011.7 1007.4 1005.7 1006.5 1001.8 1001.6 1001.3 1005.5 1008.5 1013.4 1015.5 1007.7 MAX. QFE PRESSURE IN HPA 1023.1 1024.6 1024.2 1013.4 1016.5 1008.9 1007.9 1011.0 1013.6 1016.1 1021.1 1033.2 1033.2 DAY 11 19 6 13 17 25 3 30 21 23 28 3 MIN. QFE PRESSURE IN HPA 1000.0 995.7 990.7 995.8 998.6 995.2 993.5 994.2 999.5 999.7 997.1 999.4 990.7 DAY 8 26 27 4 28 19 24 7 19 21 12 21 MEAN QNH PRESSURE IN HPA 1017.2 1015.2 1010.9 1009.2 1010.0 1005.3 1005.1 1004.8 1009.0 1012.0 1016.9 1019.1 1011.2 MAX. QNH PRESSURE IN HPA 1026.7 1028.2 1027.8 1016.9 1020.0 1012.4 1011.4 1014.5 1017.1 1019.6 1024.7 1036.8 1036.8 DAY 11 19 6 13 17 25 3 30 21 23 28 3 MIN. QNH PRESSURE IN HPA 1003.5 999.2 994.2 999.3 1002.1 998.7 997.0 997.7 1003.0 1003.2 1000.6 1002.9 994.2 DAY 8 26 27 4 28 19 24 7 19 21 12 21 MEAN QFF PRESSURE IN HPA 1017.6 1015.6 1011.2 1009.5 1010.2 1005.4 1005.2 1004.9 1009.1 1012.3 1017.2 1019.5 1011.5 MAX. QFF PRESSURE IN HPA 1027.2 1028.6 1028.1 1017.3 1020.4 1012.6 1011.6 1014.7 1017.3 1020.0 1025.0 1037.3 1037.3 DAY 11 19 6 13 17 25 3 30 21 23 28 3 MIN. QFF PRESSURE IN HPA 1003.9 999.5 994.4 999.6 1002.3 998.8 997.0 997.8 1003.1 1003.4 1000.8 1003.4 994.4 DAY 8 26 27 4 28 19 24 7 19 21 12 21 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1013.5 1012.0 1007.8 1006.1 1006.9 1002.5 1002.3 1001.8 1006.1 1008.8 1013.6 1015.4 1008.1 MAX. QFE PRESSURE IN HPA 1023.1 1025.3 1025.9 1013.7 1016.2 1009.0 1009.0 1011.3 1013.8 1016.0 1020.8 1032.9 1032.9 DAY 11 18 6 1 17 25 3 30 21 23 16 3 MIN. QFE PRESSURE IN HPA 1000.0 995.7 992.5 996.4 998.6 995.3 993.5 994.2 1000.4 999.3 998.4 998.7 992.5 DAY 8 26 27 4 28 19 24 17 19 21 12 21 MEAN QNH PRESSURE IN HPA 1017.1 1015.6 1011.3 1009.6 1010.4 1006.0 1005.8 1005.3 1009.6 1012.3 1017.1 1019.0 1011.6 MAX. QNH PRESSURE IN HPA 1026.7 1028.9 1029.5 1017.2 1019.7 1012.5 1012.5 1014.8 1017.3 1019.5 1024.4 1036.5 1036.5 DAY 11 18 6 1 17 25 3 30 21 23 16 3 MIN. QNH PRESSURE IN HPA 1003.5 999.2 996.0 999.9 1002.1 998.8 997.0 997.7 1003.9 1002.8 1001.9 1002.2 996.0 DAY 8 26 27 4 28 19 24 17 19 21 12 21 MEAN QFF PRESSURE IN HPA 1017.5 1016.0 1011.7 1009.9 1010.7 1006.2 1005.9 1005.4 1009.8 1012.6 1017.5 1019.5 1011.9 MAX. QFF PRESSURE IN HPA 1027.2 1029.4 1029.9 1017.6 1020.1 1012.7 1012.7 1015.0 1017.5 1019.9 1024.8 1037.0 1037.0 DAY 11 18 6 1 17 25 3 30 21 23 16 3 MIN. QFF PRESSURE IN HPA 1003.9 999.5 996.2 1000.2 1002.3 998.9 997.1 997.8 1004.0 1003.0 1002.2 1002.7 996.2 DAY 8 26 27 4 28 19 24 17 19 21 12 21 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1014.7 1013.0 1008.8 1006.5 1007.3 1002.8 1002.4 1002.1 1006.8 1009.8 1014.5 1016.6 1008.8 MAX. QFE PRESSURE IN HPA 1024.0 1026.9 1028.0 1014.5 1016.2 1009.6 1009.2 1011.8 1014.1 1016.0 1022.3 1032.7 1032.7 DAY 11 18 6 1 16 24 3 30 21 23 16 3 MIN. QFE PRESSURE IN HPA 1003.5 995.8 994.9 996.0 998.3 995.2 992.9 993.9 1001.3 999.3 999.7 999.7 992.9 DAY 8 26 27 4 28 19 24 17 19 21 12 21 MEAN QNH PRESSURE IN HPA 1018.2 1016.5 1012.4 1010.0 1010.8 1006.3 1005.9 1005.6 1010.3 1013.3 1018.0 1020.2 1012.3 MAX. QNH PRESSURE IN HPA 1027.6 1030.5 1031.6 1018.0 1019.7 1013.1 1012.7 1015.3 1017.6 1019.5 1025.9 1036.3 1036.3 DAY 11 18 6 1 16 24 3 30 21 23 16 3 MIN. QNH PRESSURE IN HPA 1007.0 999.3 998.4 999.5 1001.8 998.7 996.4 997.4 1004.8 1002.8 1003.2 1003.2 996.4 DAY 8 26 27 4 28 19 24 17 19 21 12 21 MEAN QFF PRESSURE IN HPA 1018.7 1017.0 1012.7 1010.4 1011.1 1006.4 1006.0 1005.7 1010.4 1013.5 1018.4 1020.7 1012.6 MAX. QFF PRESSURE IN HPA 1028.1 1031.0 1032.0 1018.4 1020.1 1013.3 1012.9 1015.5 1017.8 1019.9 1026.3 1036.8 1036.8 DAY 11 18 10 1 16 25 3 30 21 23 16 3 MIN. QFF PRESSURE IN HPA 1007.4 999.6 998.7 999.8 1002.0 998.8 996.5 997.5 1005.0 1003.0 1003.5 1003.7 996.5 DAY 8 26 27 4 28 19 24 17 19 21 12 21 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1013.7 1011.9 1008.1 1006.0 1006.6 1001.9 1001.5 1001.0 1005.6 1008.7 1013.4 1015.8 1007.8 MAX. QFE PRESSURE IN HPA 1023.6 1026.1 1026.9 1014.1 1016.9 1009.3 1007.6 1011.4 1012.7 1015.4 1021.8 1031.9 1031.9 DAY 17 18 10 12 16 24 3 30 20 22 16 2 MIN. QFE PRESSURE IN HPA 1001.4 994.0 994.7 995.2 996.7 994.5 991.9 993.0 999.8 996.9 1000.3 999.0 991.9 DAY 7 26 26 4 28 19 24 8 11 21 12 21 MEAN QNH PRESSURE IN HPA 1017.3 1015.4 1011.6 1009.5 1010.1 1005.4 1005.0 1004.5 1009.1 1012.2 1016.9 1019.3 1011.4 MAX. QNH PRESSURE IN HPA 1027.2 1029.7 1030.5 1017.6 1020.4 1012.8 1011.1 1014.9 1016.2 1018.9 1025.4 1035.5 1035.5 DAY 17 18 10 12 16 24 3 30 20 22 16 2 MIN. QNH PRESSURE IN HPA 1004.9 997.5 998.2 998.7 1000.2 998.0 995.4 996.5 1003.3 1000.4 1003.8 1002.5 995.4 DAY 7 26 26 4 28 19 24 8 11 21 12 21 MEAN QFF PRESSURE IN HPA 1017.7 1015.8 1012.0 1009.8 1010.4 1005.6 1005.0 1004.7 1009.3 1012.4 1017.2 1019.8 1011.6 MAX. QFF PRESSURE IN HPA 1027.6 1030.1 1030.9 1018.0 1020.8 1012.9 1011.3 1015.1 1016.4 1019.2 1025.7 1036.0 1036.0 DAY 17 18 10 12 16 24 3 30 20 22 16 2 MIN. QFF PRESSURE IN HPA 1005.3 997.8 998.5 999.0 1000.3 998.1 995.5 996.5 1003.4 1000.6 1004.1 1003.0 995.5 DAY 7 26 26 4 28 19 24 8 11 21 12 21 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1012.5 1009.9 1006.6 1005.1 1005.5 1000.6 999.9 999.5 1003.9 1007.4 1012.1 1014.7 1006.5 MAX. QFE PRESSURE IN HPA 1022.9 1023.8 1024.3 1012.9 1016.7 1008.6 1005.9 1010.4 1011.4 1015.9 1020.8 1031.8 1031.8 DAY 17 18 10 12 16 24 1 30 20 22 27 2 MIN. QFE PRESSURE IN HPA 999.9 991.8 991.2 994.2 994.9 992.6 990.9 991.3 998.1 995.6 999.4 999.9 990.9 DAY 7 26 26 7 28 18 24 8 10 21 11 21 MEAN QNH PRESSURE IN HPA 1016.1 1013.4 1010.2 1008.6 1009.0 1004.1 1003.3 1003.0 1007.4 1010.9 1015.7 1018.2 1010.0 MAX. QNH PRESSURE IN HPA 1026.5 1027.4 1027.9 1016.4 1020.2 1012.1 1009.4 1013.9 1014.9 1019.4 1024.4 1035.4 1035.4 DAY 17 18 10 12 16 24 1 30 20 22 27 2 MIN. QNH PRESSURE IN HPA 1003.4 995.3 994.7 997.7 998.4 996.1 994.4 994.8 1001.6 999.1 1002.9 1003.4 994.4 DAY 7 26 26 7 28 18 24 8 10 21 11 21 MEAN QFF PRESSURE IN HPA 1016.5 1013.8 1010.5 1008.9 1009.2 1004.2 1003.4 1003.1 1007.6 1011.1 1016.0 1018.7 1010.3 MAX. QFF PRESSURE IN HPA 1026.9 1027.8 1028.3 1016.8 1020.6 1012.2 1009.6 1014.1 1015.1 1019.7 1024.7 1035.9 1035.9 DAY 17 18 10 12 16 24 1 30 20 22 27 2 MIN. QFF PRESSURE IN HPA 1003.8 995.6 994.9 998.0 998.5 996.2 994.4 994.8 1001.7 999.3 1003.1 1003.9 994.4 DAY 7 26 26 7 28 18 24 9 10 21 11 21 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1013.2 1010.3 1006.7 1005.2 1005.1 1000.4 999.5 999.3 1004.0 1007.8 1012.7 1015.3 1006.6 MAX. QFE PRESSURE IN HPA 1023.6 1023.8 1023.4 1012.9 1016.7 1008.1 1006.0 1010.4 1012.3 1016.7 1021.5 1032.7 1032.7 DAY 17 18 10 12 16 24 2 30 20 22 27 2 MIN. QFE PRESSURE IN HPA 1000.5 992.1 989.7 994.5 993.6 991.5 988.9 990.5 998.1 998.8 998.9 1001.8 988.9 DAY 7 26 26 4 28 18 24 9 10 21 10 21 MEAN QNH PRESSURE IN HPA 1016.7 1013.8 1010.2 1008.7 1008.6 1003.9 1003.0 1002.8 1007.5 1011.3 1016.2 1018.9 1010.1 MAX. QNH PRESSURE IN HPA 1027.2 1027.4 1027.0 1016.4 1020.2 1011.6 1009.5 1013.9 1015.8 1020.2 1025.1 1036.3 1036.3 DAY 17 18 10 12 16 24 2 30 20 22 27 2 MIN. QNH PRESSURE IN HPA 1004.0 995.6 993.2 998.0 997.1 995.0 992.4 994.0 1001.6 1002.3 1002.4 1005.3 992.4 DAY 7 26 26 4 28 18 24 9 10 21 10 21 MEAN QFF PRESSURE IN HPA 1017.2 1014.3 1010.5 1009.0 1008.9 1004.1 1003.1 1002.9 1007.6 1011.5 1016.6 1019.4 1010.4 MAX. QFF PRESSURE IN HPA 1027.6 1027.9 1027.4 1016.8 1020.6 1011.8 1009.7 1014.1 1016.0 1020.6 1025.5 1036.8 1036.8 DAY 17 18 10 12 16 24 2 30 20 22 27 2 MIN. QFF PRESSURE IN HPA 1004.4 995.9 993.4 998.3 997.2 995.1 992.5 994.0 1001.7 1002.5 1002.7 1005.8 992.5 DAY 7 26 26 4 28 18 24 9 10 21 10 21 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1013.7 1011.2 1007.7 1006.3 1006.1 1002.1 1001.0 1001.0 1005.2 1008.7 1013.3 1015.6 1007.7 MAX. QFE PRESSURE IN HPA 1024.1 1024.9 1022.9 1013.9 1017.6 1008.9 1007.7 1011.3 1013.3 1017.1 1021.5 1033.5 1033.5 DAY 17 18 10 12 16 24 2 29 20 22 27 2 MIN. QFE PRESSURE IN HPA 1000.8 993.5 990.1 996.6 994.8 994.0 991.1 992.4 999.6 999.2 997.6 1001.4 990.1 DAY 7 26 26 3 31 18 24 15 10 29 10 20 MEAN QNH PRESSURE IN HPA 1017.3 1014.8 1011.2 1009.8 1009.6 1005.6 1004.5 1004.5 1008.7 1012.2 1016.8 1019.2 1011.2 MAX. QNH PRESSURE IN HPA 1027.7 1028.5 1026.5 1017.4 1021.2 1012.4 1011.2 1014.8 1016.8 1020.6 1025.1 1037.1 1037.1 DAY 17 18 10 12 16 24 2 29 20 22 27 2 MIN. QNH PRESSURE IN HPA 1004.3 997.0 993.6 1000.1 998.3 997.5 994.6 995.9 1003.1 1002.7 1001.1 1004.9 993.6 DAY 7 26 26 3 31 18 24 15 10 29 10 20 MEAN QFF PRESSURE IN HPA 1017.7 1015.2 1011.6 1010.1 1009.8 1005.7 1004.6 1004.6 1008.9 1012.4 1017.2 1019.7 1011.5 MAX. QFF PRESSURE IN HPA 1028.1 1029.0 1026.9 1017.8 1021.5 1012.6 1011.4 1015.0 1017.0 1021.0 1025.5 1037.6 1037.6 DAY 17 18 10 12 16 24 2 29 20 22 27 2 MIN. QFF PRESSURE IN HPA 1004.7 997.3 993.9 1000.4 998.4 997.6 994.7 996.0 1003.2 1003.0 1001.4 1005.4 993.9 DAY 7 26 26 3 31 18 24 15 10 29 10 20 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1013.8 1011.5 1007.6 1006.0 1006.1 1002.3 1001.4 1001.3 1005.4 1008.7 1013.5 1015.4 1007.7 MAX. QFE PRESSURE IN HPA 1024.1 1024.9 1021.7 1013.9 1017.0 1008.9 1007.6 1011.5 1013.6 1016.9 1021.8 1033.4 1033.4 DAY 17 18 10 12 16 24 2 30 20 22 27 2 MIN. QFE PRESSURE IN HPA 1000.6 995.7 989.5 996.2 994.6 995.4 993.5 992.9 999.2 999.0 997.2 1000.2 989.5 DAY 7 26 26 3 31 18 24 16 10 29 11 20 MEAN QNH PRESSURE IN HPA 1017.3 1015.1 1011.1 1009.5 1009.7 1005.8 1004.8 1004.8 1008.9 1012.3 1017.0 1019.0 1011.3 MAX. QNH PRESSURE IN HPA 1027.7 1028.5 1025.3 1017.4 1020.5 1012.4 1011.1 1015.0 1017.1 1020.4 1025.4 1037.0 1037.0 DAY 17 18 10 12 16 24 2 30 20 22 27 2 MIN. QNH PRESSURE IN HPA 1004.1 999.2 993.0 999.7 998.1 998.9 997.0 996.4 1002.7 1002.5 1000.7 1003.7 993.0 DAY 7 26 26 3 31 18 24 16 10 29 11 20 MEAN QFF PRESSURE IN HPA 1017.8 1015.4 1011.5 1009.9 1009.9 1005.9 1004.9 1004.9 1009.0 1012.5 1017.3 1019.5 1011.5 MAX. QFF PRESSURE IN HPA 1028.1 1028.9 1025.7 1017.8 1020.9 1012.5 1011.3 1015.2 1017.3 1020.7 1025.7 1037.5 1037.5 DAY 17 18 10 12 16 24 2 30 20 22 27 2 MIN. QFF PRESSURE IN HPA 1004.5 999.5 993.3 1000.0 998.2 999.0 997.1 996.5 1002.8 1002.8 1000.9 1004.2 993.3 DAY 7 26 26 3 31 18 24 16 10 29 11 20 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.2 4.4 4.7 10.6 18.1 21.7 26.2 26.6 20.9 17.7 9.3 5.2 14.1 MINIMUN AIR TEMPERATURE (C) -0.3 1.7 1.7 6.3 12.0 16.2 20.9 20.4 16.5 13.1 5.9 1.5 9.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 2 13 11 1 0 0 0 27 DAYS WITH MINIMUM TEMP. <=-4 5 0 3 0 0 0 0 0 0 0 0 3 11 DAYS WITH FREEZING MIN.<= 0 16 7 7 0 0 0 0 0 0 0 0 13 43 TEMPERATURE RECORDS LOWEST(C) -6.0 -3.2 -10.0 1.0 4.0 8.0 16.4 16.4 11.0 6.8 0.2 -4.2 -10.0 DAY 21 18 29 18 1 6 2 2 26 31 23 13 MAXIMUM AIR TEMPERATURE (C) 10.3 8.0 8.2 15.6 24.8 28.0 32.2 33.4 26.4 23.5 14.1 10.7 19.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 9 25 30 6 1 0 0 71 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 19.6 22.2 15.8 26.2 28.4 33.2 37.2 37.4 35.8 30.4 21.4 23.8 37.4 DAY 7 1 22 8 21 28 7 12 4 10 1 17 DIF. BETWEEN (MAX.-MIN.) (C) 10.6 6.3 6.5 9.3 12.8 11.8 11.3 13.0 9.9 10.4 8.2 9.2 10.0 MEAN DAILY TEMP. (MDT) (C) 5.0 4.9 5.0 11.0 18.4 22.1 26.5 26.9 21.4 18.3 10.0 6.1 14.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 7.3 52.1 172.0 183.4 45.0 2.2 0.0 0.0 462.0 HEATING DEG. DAYS(BASE 18 0C) 403.0 367.9 403.7 212.2 36.7 5.9 0.0 0.0 2.0 34.9 240.5 370.0 2076.8 DEWPOINT (MEAN C) 0.8 1.6 2.2 7.1 13.3 15.7 18.9 19.1 15.6 13.8 7.0 2.2 9.8 MIXING RATIO (G/KG) 4.07 4.30 4.50 6.48 9.81 11.36 14.00 14.16 11.27 10.09 6.34 4.55 8.41 VAPOUR PRESSURE (HPA) 6.58 6.92 7.26 10.39 15.62 17.98 21.99 22.31 17.90 16.06 10.22 7.36 13.38 SATURATION DEF. (HPA) 2.05 1.73 1.47 3.05 6.23 9.07 13.06 13.58 7.74 4.96 1.89 1.96 5.57 RELATIVE HUMIDITY (MEAN %) 81 84 85 81 76 71 66 66 74 80 87 83 78 RELATIVE HUMIDITY (MAX. %) 94 94 95 94 95 92 85 86 90 95 97 94 93 RELATIVE HUMIDITY (MIN. %) 60 70 71 64 53 49 48 46 54 60 69 64 59 RELATIVE HUMIDITY (MEAN% 03UTC) 91 90 93 91 94 88 81 83 87 93 94 91 90 RELATIVE HUMIDITY (MEAN% 09UTC) 66 75 77 70 57 57 54 51 61 67 73 69 65 RELATIVE HUMIDITY (MEAN% 15UTC) 81 82 79 72 65 57 54 52 66 75 88 83 71 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 5.7 41.8 75.5 54.6 41.4 57.3 6.3 5.5 31.0 21.8 53.9 12.7 407.5 DAYS WITH PRECIPITATION >=10 0 2 2 3 1 1 0 0 1 0 2 0 12 DAYS WITH PRECIPITATION >= 5 1 4 2 3 4 5 0 1 1 2 4 0 27 DAYS WITH PRECIPITATION >= 1 1 7 8 7 9 8 2 1 2 4 8 4 61 DAYS WITH PRECIPITATION 2 8 12 8 10 8 2 3 2 5 9 5 74 GREATEST DAILY PRECIPITATION 5.0 11.0 48.0 20.0 14.0 27.0 3.3 5.0 28.0 8.1 15.0 4.0 48.0 DAY 15 11 28 16 7 5 23 23 20 29 13 3 DAY WITH THUNDER STORM 0 0 0 0 2 8 1 2 0 0 0 0 13 DAYS WITH SNOW OR SLEET 2 5 2 1 0 0 0 0 0 0 0 0 10 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 90 90 90 90 90 90 90 90 90 90 135 225 90 PREVAILING WIND SPEED(KNOTS) 10.1 9.4 10.4 11.1 9.4 10.1 11.2 11.1 11.0 10.4 9.9 6.7 10.5 PREVAILING WIND PERCENT 9.3 15.6 21.8 19.6 10.1 13.8 19.8 16.1 17.1 10.1 5.8 4.8 13.4 CALMS PERCENT OF WIND 70.6 66.1 59.7 57.1 76.2 68.8 68.1 73.0 75.4 83.9 83.3 85.9 72.4 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 156 106 103 101 109 94 89 93 92 101 138 138 101 VECTOR WIND MAGNITUDE(KNOTS) 0.4 2.4 2.8 3.2 1.3 2.2 2.8 2.6 2.3 1.2 0.6 0.5 1.8 WIND STEADINESES (MEAN %) 15.4 72.7 71.8 71.1 59.1 71.0 82.4 86.7 88.5 70.6 40.0 38.5 64.3 WIND SPEED (MEAN KNOTS) 2.6 3.3 3.9 4.5 2.2 3.1 3.4 3.0 2.6 1.7 1.5 1.3 2.8 FASTEST WIND DIRECTION 230 120 120 90 100 130 90 120 90 90 120 120 90 FASTEST WIND SPEED (KNOTS) 19 19 17 29 16 17 17 16 16 21 17 21 29 DAY 4 4 8 26 24 10 19 13 5 26 3 19 DAYS WITH SKY CLEAR (0-2)/8 13 6 6 4 15 17 17 24 13 14 13 15 157 DAYS WITH P.CLOUDY (3-6)/8 12 4 3 11 14 10 10 7 9 11 6 8 105 DAYS WITH CLOUDY (7-8)/8 6 18 22 15 2 3 4 0 8 6 11 8 103 DAYS WITH VISIBILITY =< 2 KM 6 3 2 2 1 4 2 0 1 3 3 0 27 DURATION OF SUNSHINE HOURS 153.7 74.4 96.9 131.0 274.2 269.9 248.7 311.3 169.9 175.1 134.0 133.5 2172.6 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1011.7 1009.6 1011.6 1009.2 1007.5 1003.3 1000.0 1002.8 1007.4 1006.7 1014.3 1014.3 1008.2 MAX. QFE PRESSURE IN HPA 1023.9 1023.5 1025.7 1023.2 1022.9 1015.9 1007.7 1008.1 1020.0 1017.4 1023.0 1034.7 1034.7 DAY-HOUR 19- 6 28-18 2- 6 28-18 1- 6 6- 6 3- 9 16- 6 22-18 15- 6 15- 6 11- 6 MIN. QFE PRESSURE IN HPA 997.3 996.9 995.6 990.1 992.5 994.1 991.2 996.3 992.5 995.0 1001.2 995.4 990.1 DAY-HOUR 4-12 19- 0 19-12 26-12 30-15 17-15 7-12 12-12 6-15 25-12 21- 0 18-12 MEAN QNH PRESSURE IN HPA 1015.2 1013.1 1015.1 1012.7 1011.0 1006.8 1003.5 1006.3 1010.9 1010.2 1017.8 1017.8 1011.7 MAX. QNH PRESSURE IN HPA 1027.5 1027.1 1029.3 1026.8 1026.5 1019.4 1011.2 1011.6 1023.6 1020.9 1026.6 1038.3 1038.3 DAY-HOUR 19- 6 28-18 2- 6 28-18 1- 6 6- 6 3- 9 16- 6 22-18 15- 6 15- 6 11- 6 MIN. QNH PRESSURE IN HPA 1000.8 1000.4 999.1 993.6 996.0 997.6 994.7 999.8 996.0 998.5 1004.7 998.9 993.6 DAY-HOUR 4-12 19- 0 19-12 26-12 30-15 17-15 7-12 12-12 6-15 25-12 21- 0 18-12 MEAN QFF PRESSURE IN HPA 1015.6 1013.5 1015.5 1013.0 1011.2 1007.0 1003.6 1006.4 1011.1 1010.5 1018.2 1018.3 1012.0 MAX. QFF PRESSURE IN HPA 1027.9 1027.5 1029.8 1027.2 1026.8 1019.8 1011.3 1011.7 1023.8 1021.2 1027.0 1038.8 1038.8 DAY-HOUR 19- 6 28-18 2- 6 28-18 1- 6 6- 6 3- 9 16- 6 22-18 15- 6 15- 6 11- 6 MIN. QFF PRESSURE IN HPA 1001.1 1000.8 999.5 993.8 996.2 997.7 994.7 999.8 996.1 998.7 1005.0 999.1 993.8 DAY-HOUR 4-12 19- 0 19-12 26-12 30-15 17-15 7-12 12-12 6-15 25-12 21- 0 18-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1011.9 1009.3 1011.2 1008.9 1007.7 1003.4 1000.1 1003.0 1007.4 1006.8 1013.9 1014.5 1008.2 MAX. QFE PRESSURE IN HPA 1023.4 1019.1 1024.2 1021.7 1022.2 1015.4 1007.3 1006.8 1018.5 1014.2 1021.8 1030.9 1030.9 DAY 19 24 2 29 1 6 4 30 23 15 7 12 MIN. QFE PRESSURE IN HPA 999.7 996.9 998.0 994.5 997.4 994.5 992.7 997.7 998.0 997.3 1001.2 997.7 992.7 DAY 5 19 20 26 30 18 8 12 6 29 21 19 MEAN QNH PRESSURE IN HPA 1015.4 1012.8 1014.8 1012.4 1011.2 1006.9 1003.6 1006.5 1011.0 1010.3 1017.4 1018.0 1011.7 MAX. QNH PRESSURE IN HPA 1027.0 1022.7 1027.8 1025.3 1025.8 1018.9 1010.8 1010.3 1022.1 1017.7 1025.4 1034.5 1034.5 DAY 19 24 2 29 1 6 4 30 23 15 7 12 MIN. QNH PRESSURE IN HPA 1003.2 1000.4 1001.5 998.0 1000.9 998.0 996.2 1001.2 1001.5 1000.8 1004.7 1001.2 996.2 DAY 5 19 20 26 30 18 8 12 6 29 21 19 MEAN QFF PRESSURE IN HPA 1015.8 1013.2 1015.2 1012.8 1011.5 1007.1 1003.7 1006.6 1011.1 1010.5 1017.8 1018.4 1012.0 MAX. QFF PRESSURE IN HPA 1027.4 1023.1 1028.2 1025.7 1026.1 1019.3 1010.9 1010.4 1022.3 1017.9 1025.7 1035.0 1035.0 DAY 19 24 2 29 1 6 4 30 23 15 7 12 MIN. QFF PRESSURE IN HPA 1003.5 1000.8 1001.9 998.2 1001.1 998.1 996.2 1001.3 1001.6 1001.1 1005.0 1001.4 996.2 DAY 5 19 20 26 30 18 8 12 6 29 21 19 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1012.0 1009.5 1011.6 1009.2 1008.3 1004.0 1000.8 1003.6 1007.9 1007.1 1014.2 1014.2 1008.5 MAX. QFE PRESSURE IN HPA 1023.3 1020.5 1024.6 1021.4 1022.2 1015.8 1007.3 1007.8 1018.5 1015.3 1021.8 1032.5 1032.5 DAY 19 28 2 29 1 6 4 30 23 15 7 11 MIN. QFE PRESSURE IN HPA 1000.8 997.1 999.0 994.9 997.4 995.5 993.5 998.4 998.2 998.0 1001.3 998.3 993.5 DAY 5 19 20 26 30 18 7 12 6 29 21 19 MEAN QNH PRESSURE IN HPA 1015.5 1013.0 1015.1 1012.8 1011.9 1007.6 1004.3 1007.1 1011.5 1010.6 1017.7 1017.8 1012.1 MAX. QNH PRESSURE IN HPA 1026.9 1024.1 1028.2 1025.0 1025.8 1019.3 1010.8 1011.3 1022.1 1018.8 1025.4 1036.1 1036.1 DAY 19 28 2 29 1 6 4 30 23 15 7 11 MIN. QNH PRESSURE IN HPA 1004.3 1000.6 1002.5 998.4 1000.9 999.0 997.0 1001.9 1001.7 1001.5 1004.8 1001.8 997.0 DAY 5 19 20 26 30 18 7 12 6 29 21 19 MEAN QFF PRESSURE IN HPA 1016.0 1013.4 1015.5 1013.1 1012.1 1007.7 1004.4 1007.2 1011.7 1010.8 1018.1 1018.2 1012.4 MAX. QFF PRESSURE IN HPA 1027.3 1024.5 1028.7 1025.4 1026.1 1019.7 1011.0 1011.4 1022.3 1019.1 1025.7 1036.6 1036.6 DAY 19 28 2 29 1 6 4 30 23 15 7 11 MIN. QFF PRESSURE IN HPA 1004.7 1001.1 1002.9 998.6 1001.1 999.1 997.1 1002.0 1001.8 1001.8 1005.2 1002.1 997.1 DAY 5 19 20 26 30 18 7 12 6 29 21 19 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1012.9 1010.4 1012.6 1009.9 1008.7 1004.4 1001.1 1004.1 1008.5 1007.8 1015.4 1015.2 1009.3 MAX. QFE PRESSURE IN HPA 1023.9 1022.5 1025.7 1021.1 1022.9 1015.9 1007.5 1008.1 1019.8 1017.4 1023.0 1034.7 1034.7 DAY 19 28 2 17 1 6 3 16 22 15 15 11 MIN. QFE PRESSURE IN HPA 1003.0 998.7 999.0 992.9 996.9 996.6 993.7 998.6 998.5 1000.0 1004.2 998.5 992.9 DAY 5 19 19 6 30 18 7 12 6 25 9 18 MEAN QNH PRESSURE IN HPA 1016.4 1014.0 1016.2 1013.5 1012.2 1007.9 1004.6 1007.6 1012.0 1011.3 1018.9 1018.8 1012.8 MAX. QNH PRESSURE IN HPA 1027.5 1026.1 1029.3 1024.7 1026.5 1019.4 1011.0 1011.6 1023.4 1020.9 1026.6 1038.3 1038.3 DAY 19 28 2 17 1 6 3 16 22 15 15 11 MIN. QNH PRESSURE IN HPA 1006.5 1002.2 1002.5 996.4 1000.4 1000.1 997.2 1002.1 1002.0 1003.5 1007.7 1002.0 996.4 DAY 5 19 19 6 30 18 7 12 6 25 9 18 MEAN QFF PRESSURE IN HPA 1016.9 1014.4 1016.6 1013.8 1012.4 1008.1 1004.7 1007.7 1012.2 1011.6 1019.3 1019.2 1013.1 MAX. QFF PRESSURE IN HPA 1027.9 1026.5 1029.8 1025.1 1026.8 1019.8 1011.1 1011.7 1023.6 1021.2 1027.0 1038.8 1038.8 DAY 19 28 2 17 1 6 3 16 22 15 15 11 MIN. QFF PRESSURE IN HPA 1006.9 1002.7 1002.9 996.7 1000.6 1000.2 997.3 1002.2 1002.1 1003.7 1008.1 1002.3 996.7 DAY 5 19 19 6 30 18 7 12 6 25 9 18 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1011.9 1009.9 1012.0 1009.4 1007.8 1003.5 1000.1 1003.0 1007.6 1006.6 1014.5 1014.2 1008.4 MAX. QFE PRESSURE IN HPA 1022.8 1023.1 1024.5 1021.2 1021.9 1014.7 1007.7 1007.0 1019.4 1016.5 1022.0 1034.4 1034.4 DAY 19 28 2 28 1 6 3 16 22 15 15 11 MIN. QFE PRESSURE IN HPA 1000.8 998.3 996.3 992.6 995.8 996.7 992.5 997.9 995.8 995.6 1003.2 996.7 992.5 DAY 4 20 19 6 30 27 8 12 6 25 9 18 MEAN QNH PRESSURE IN HPA 1015.4 1013.4 1015.5 1012.9 1011.4 1007.0 1003.6 1006.5 1011.2 1010.1 1018.0 1017.7 1011.9 MAX. QNH PRESSURE IN HPA 1026.4 1026.7 1028.1 1024.8 1025.5 1018.2 1011.2 1010.5 1023.0 1020.0 1025.6 1038.0 1038.0 DAY 19 28 2 28 1 6 3 16 22 15 15 11 MIN. QNH PRESSURE IN HPA 1004.3 1001.8 999.8 996.1 999.3 1000.2 996.0 1001.4 999.3 999.1 1006.7 1000.2 996.0 DAY 4 20 19 6 30 27 8 12 6 25 9 18 MEAN QFF PRESSURE IN HPA 1015.8 1013.8 1016.0 1013.2 1011.6 1007.2 1003.7 1006.6 1011.3 1010.4 1018.4 1018.1 1012.2 MAX. QFF PRESSURE IN HPA 1026.8 1027.1 1028.6 1025.2 1025.8 1018.5 1011.3 1010.6 1023.2 1020.3 1025.9 1038.5 1038.5 DAY 19 28 2 28 1 6 3 16 22 15 15 11 MIN. QFF PRESSURE IN HPA 1004.7 1002.3 1000.2 996.3 999.4 1000.3 996.0 1001.5 999.4 999.3 1007.0 1000.5 996.0 DAY 4 20 19 26 30 27 8 12 6 25 9 18 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1010.3 1008.6 1010.9 1008.3 1006.3 1002.4 998.9 1001.6 1006.3 1005.6 1013.6 1013.4 1007.2 MAX. QFE PRESSURE IN HPA 1020.7 1022.0 1022.8 1021.5 1020.0 1012.8 1006.8 1005.5 1018.0 1015.0 1021.0 1033.3 1033.3 DAY 19 28 1 28 1 6 3 16 22 15 15 11 MIN. QFE PRESSURE IN HPA 997.3 997.2 995.6 990.1 994.4 995.3 991.2 996.3 993.6 995.0 1002.2 995.4 990.1 DAY 4 19 19 26 30 22 7 12 6 25 9 18 MEAN QNH PRESSURE IN HPA 1013.9 1012.1 1014.5 1011.9 1009.8 1005.9 1002.3 1005.1 1009.9 1009.1 1017.1 1016.9 1010.7 MAX. QNH PRESSURE IN HPA 1024.3 1025.6 1026.4 1025.1 1023.6 1016.3 1010.3 1009.0 1021.6 1018.5 1024.6 1036.9 1036.9 DAY 19 28 1 28 1 6 3 16 22 15 15 11 MIN. QNH PRESSURE IN HPA 1000.8 1000.7 999.1 993.6 997.9 998.8 994.7 999.8 997.1 998.5 1005.7 998.9 993.6 DAY 4 19 19 26 30 22 7 12 6 25 9 18 MEAN QFF PRESSURE IN HPA 1014.3 1012.5 1014.9 1012.2 1010.1 1006.0 1002.5 1005.2 1010.0 1009.3 1017.4 1017.3 1011.0 MAX. QFF PRESSURE IN HPA 1024.7 1026.0 1026.8 1025.5 1023.9 1016.6 1010.4 1009.1 1021.8 1018.7 1025.0 1037.4 1037.4 DAY 19 28 1 28 1 6 3 16 22 15 15 11 MIN. QFF PRESSURE IN HPA 1001.1 1001.1 999.5 993.8 998.1 998.9 994.7 999.8 997.2 998.7 1006.0 999.1 993.8 DAY 4 19 19 26 30 22 7 12 6 25 9 18 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1011.1 1009.0 1011.0 1008.4 1006.1 1002.0 998.7 1001.4 1006.3 1005.9 1014.0 1014.1 1007.3 MAX. QFE PRESSURE IN HPA 1021.3 1022.5 1022.9 1021.1 1019.1 1012.3 1006.6 1005.3 1019.1 1014.7 1021.4 1033.3 1033.3 DAY 10 28 1 28 1 5 3 16 22 15 15 11 MIN. QFE PRESSURE IN HPA 998.5 997.6 997.0 994.6 992.5 994.1 991.6 996.9 992.5 996.2 1002.4 996.0 991.6 DAY 4 3 19 26 30 17 7 12 6 25 9 18 MEAN QNH PRESSURE IN HPA 1014.7 1012.6 1014.5 1011.9 1009.6 1005.5 1002.2 1004.9 1009.8 1009.4 1017.5 1017.6 1010.9 MAX. QNH PRESSURE IN HPA 1024.9 1026.1 1026.5 1024.7 1022.7 1015.8 1010.1 1008.8 1022.7 1018.2 1025.0 1036.9 1036.9 DAY 10 28 1 28 1 5 3 16 22 15 15 11 MIN. QNH PRESSURE IN HPA 1002.0 1001.1 1000.5 998.1 996.0 997.6 995.1 1000.4 996.0 999.7 1005.9 999.5 995.1 DAY 4 3 19 26 30 17 7 12 6 25 9 18 MEAN QFF PRESSURE IN HPA 1015.1 1013.0 1015.0 1012.3 1009.9 1005.7 1002.3 1005.0 1010.0 1009.7 1017.9 1018.0 1011.2 MAX. QFF PRESSURE IN HPA 1025.3 1026.5 1026.9 1025.1 1023.0 1016.1 1010.3 1008.9 1022.9 1018.5 1025.4 1037.4 1037.4 DAY 10 28 1 28 1 5 3 16 22 15 15 11 MIN. QFF PRESSURE IN HPA 1002.4 1001.5 1000.9 998.3 996.2 997.7 995.1 1000.5 996.1 999.9 1006.2 999.8 995.1 DAY 4 3 19 26 30 17 7 12 6 25 9 18 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1011.8 1010.1 1011.8 1009.7 1007.4 1003.2 1000.0 1002.9 1007.6 1007.0 1014.5 1014.6 1008.4 MAX. QFE PRESSURE IN HPA 1022.4 1023.5 1024.1 1023.2 1019.9 1015.1 1007.6 1006.5 1020.0 1014.9 1022.0 1033.1 1033.1 DAY 18 28 1 28 1 5 3 15 22 15 6 11 MIN. QFE PRESSURE IN HPA 998.2 997.5 997.6 996.7 996.2 994.3 992.3 998.0 996.4 997.6 1002.8 996.0 992.3 DAY 4 3 19 6 30 17 7 11 6 28 9 18 MEAN QNH PRESSURE IN HPA 1015.3 1013.6 1015.3 1013.3 1011.0 1006.7 1003.5 1006.4 1011.1 1010.5 1018.0 1018.1 1011.9 MAX. QNH PRESSURE IN HPA 1026.0 1027.1 1027.7 1026.8 1023.5 1018.6 1011.1 1010.0 1023.6 1018.4 1025.6 1036.7 1036.7 DAY 18 28 1 28 1 5 3 15 22 15 6 11 MIN. QNH PRESSURE IN HPA 1001.7 1001.0 1001.1 1000.2 999.7 997.8 995.8 1001.5 999.9 1001.1 1006.3 999.5 995.8 DAY 4 3 19 6 30 17 7 11 6 28 9 18 MEAN QFF PRESSURE IN HPA 1015.8 1014.0 1015.8 1013.6 1011.2 1006.9 1003.6 1006.5 1011.3 1010.8 1018.4 1018.5 1012.2 MAX. QFF PRESSURE IN HPA 1026.4 1027.5 1028.2 1027.2 1023.8 1019.0 1011.3 1010.1 1023.8 1018.7 1025.9 1037.2 1037.2 DAY 18 28 1 28 1 5 3 15 22 15 6 11 MIN. QFF PRESSURE IN HPA 1002.0 1001.4 1001.5 1000.5 999.8 997.9 995.8 1001.6 1000.0 1001.4 1006.6 999.8 995.8 DAY 4 3 19 6 30 17 7 11 6 28 9 18 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1011.6 1010.0 1011.4 1009.6 1007.5 1003.6 1000.3 1003.0 1007.7 1007.0 1014.5 1014.5 1008.4 MAX. QFE PRESSURE IN HPA 1023.1 1023.0 1024.1 1022.7 1018.9 1015.4 1007.3 1006.5 1019.4 1013.9 1022.2 1031.8 1031.8 DAY 18 28 1 28 1 5 3 15 22 15 6 11 MIN. QFE PRESSURE IN HPA 998.9 997.9 997.5 996.1 997.8 996.0 992.5 998.2 998.7 997.6 1003.1 997.0 992.5 DAY 4 3 19 25 30 17 7 11 5 28 20 18 MEAN QNH PRESSURE IN HPA 1015.2 1013.5 1014.9 1013.1 1011.0 1007.1 1003.8 1006.5 1011.3 1010.5 1018.1 1018.0 1011.9 MAX. QNH PRESSURE IN HPA 1026.7 1026.6 1027.7 1026.3 1022.5 1018.9 1010.8 1010.0 1023.0 1017.4 1025.8 1035.4 1035.4 DAY 18 28 1 28 1 5 3 15 22 15 6 11 MIN. QNH PRESSURE IN HPA 1002.4 1001.4 1001.0 999.6 1001.3 999.5 996.0 1001.7 1002.2 1001.1 1006.6 1000.5 996.0 DAY 4 3 19 25 30 17 7 11 5 28 20 18 MEAN QFF PRESSURE IN HPA 1015.6 1013.9 1015.3 1013.5 1011.2 1007.3 1003.9 1006.6 1011.4 1010.8 1018.4 1018.4 1012.2 MAX. QFF PRESSURE IN HPA 1027.1 1027.0 1028.1 1026.7 1022.8 1019.3 1010.9 1010.1 1023.2 1017.7 1026.1 1035.9 1035.9 DAY 18 28 1 28 1 5 3 15 22 15 6 11 MIN. QFF PRESSURE IN HPA 1002.7 1001.8 1001.4 999.8 1001.4 999.6 996.0 1001.8 1002.3 1001.4 1007.0 1000.8 996.0 DAY 4 3 19 25 30 17 7 11 5 28 20 18 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1984-2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.4 4.3 7.7 14.0 19.2 24.6 27.5 26.8 22.1 15.6 9.3 4.6 14.9 MINIMUN AIR TEMPERATURE (C) -0.7 -0.2 2.8 8.1 12.6 17.4 20.5 20.6 16.5 11.1 5.5 0.9 9.6 DAYS WITH MINIMUM TEMP. >=21 0.0 0.0 0.0 0.0 0.0 2.5 14.3 14.8 1.3 0.0 0.0 0.0 32.9 DAYS WITH MINIMUM TEMP. <=-4 4.7 3.9 1.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.4 12.1 DAYS WITH FREEZING MIN.<= 0 18.3 14.6 6.5 0.2 0.0 0.0 0.0 0.0 0.0 0.0 1.6 13.1 54.3 TEMPERATURE RECORDS LOWEST(C) -15.0 -12.0 -10.0 -1.6 0.2 8.0 11.4 13.4 6.0 2.6 -3.4 -8.4 -15.0 YEAR-DAY 90- 7 94-15 3-29 96- 5 92- 3 3- 6 94- 6 93-25 87-24 93-30 93-17 87-28 90- 7 MAXIMUM AIR TEMPERATURE (C) 8.1 9.4 12.8 19.9 25.4 31.2 33.8 32.9 27.8 20.8 13.8 9.1 20.4 DAYS WITH MAXIMUM TEMP. >=30 0.0 0.0 0.0 0.6 4.6 20.7 28.1 26.2 10.6 0.4 0.0 0.0 91.2 DAYS WITH MAXIMUM TEMP. <= 0 0.4 0.6 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 1.6 TEMPERATURE RECORDS HIGHEST(C) 23.0 24.2 27.4 37.2 35.2 40.0 40.2 41.0 35.8 33.2 27.6 24.6 41.0 YEAR-DAY 95- 3 96- 9 2- 8 98-14 95-23 98-21 91- 4 0- 2 86- 4 92-24 1-15 90- 2 0- 2 DIF. BETWEEN (MAX.-MIN.) (C) 8.8 9.6 10.0 11.8 12.8 13.8 13.3 12.3 11.3 9.7 8.3 8.2 10.8 MEAN DAILY TEMP. (MDT) (C) 3.7 4.6 7.8 14.0 19.0 24.3 27.2 26.7 22.2 15.9 9.6 5.0 15.0 STANDARD DEVIATION OF MDT(C) 1.06 1.68 1.84 1.69 1.23 1.28 0.88 1.00 1.18 1.56 1.53 1.86 1.40 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.0 16.8 105.2 191.6 178.1 58.1 1.8 0.0 0.0 552.6 HEATING DEG. DAYS(BASE 18 0C) 443.7 378.7 316.2 126.8 30.7 1.3 0.1 0.0 5.3 81.5 250.6 403.6 2038.5 DEWPOINT (MEAN C) -0.4 0.2 3.3 8.7 12.5 15.3 17.7 17.8 15.2 11.2 6.1 1.5 9.1 MIXING RATIO (G/KG) 3.77 3.96 4.95 7.19 9.32 11.23 13.10 13.11 11.09 8.46 5.99 4.35 8.04 VAPOUR PRESSURE (HPA) 6.10 6.39 7.96 11.49 14.82 17.75 20.63 20.66 17.61 13.55 9.64 7.03 12.80 SATURATION DEF. (HPA) 1.98 2.38 3.11 5.39 8.54 14.55 17.33 15.82 10.12 4.94 2.51 1.82 7.38 RELATIVE HUMIDITY (MEAN %) 79 78 77 74 69 61 59 61 68 77 82 83 72 RELATIVE HUMIDITY (MAX. %) 92 93 93 93 91 85 82 83 88 93 94 94 90 RELATIVE HUMIDITY (MIN. %) 62 59 58 53 48 39 40 42 48 58 66 66 53 RELATIVE HUMIDITY (MEAN% 03UTC) 88 89 91 91 89 82 78 80 85 90 92 91 87 RELATIVE HUMIDITY (MEAN% 09UTC) 68 67 66 61 55 48 47 49 56 65 71 72 60 RELATIVE HUMIDITY (MEAN% 15UTC) 78 73 68 64 57 46 45 48 58 73 82 83 65 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 14.7 19.1 32.5 28.0 36.7 19.6 6.5 8.2 22.8 37.1 25.7 21.1 272.0 DAYS WITH PRECIPITATION >=10 0.2 0.4 0.9 0.9 0.9 0.5 0.3 0.2 0.7 1.1 0.7 0.4 7.2 DAYS WITH PRECIPITATION >= 5 1.1 1.2 2.1 1.7 2.3 1.5 0.4 0.6 1.0 2.7 1.8 1.4 17.8 DAYS WITH PRECIPITATION >= 1 3.3 4.4 4.9 4.2 6.0 3.1 0.9 1.4 2.3 5.3 4.4 4.5 44.7 DAYS WITH PRECIPITATION 6.8 7.9 9.0 8.1 9.3 5.6 2.4 3.2 4.4 8.9 8.1 8.0 81.7 GREATEST DAILY PRECIPITATION 21.0 22.0 48.0 34.0 47.0 27.0 26.0 32.0 65.4 48.0 24.0 24.0 65.4 YEAR-DAY 85-15 98- 8 3-28 90-16 84- 6 3- 5 91-14 98- 8 95-26 89-21 92- 7 92-26 95 DAY WITH THUNDER STORM 0.1 0.1 0.1 0.6 3.2 4.1 0.9 1.1 0.9 0.7 0.1 0.0 11.9 DAYS WITH SNOW OR SLEET 2.8 4.0 1.5 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.6 1.8 10.8 DAYS WITH DUST 0.1 0.1 0.1 0.4 0.2 0.3 0.4 0.5 0.6 0.1 0.1 0.1 3.0 WIND DIRECTION (PREVAILING) 225 90 90 90 90 90 90 90 90 90 90 225 90 PREVAILING WIND SPEED(KNOTS) 6.8 9.3 9.3 9.2 9.0 9.3 9.6 9.9 9.4 9.3 8.5 6.4 9.3 PREVAILING WIND PERCENT 12.6 14.3 18.6 19.2 19.0 20.7 26.0 27.9 21.9 14.0 10.5 10.3 17.3 CALMS PERCENT OF WIND 56.5 52.5 48.5 46.2 46.2 44.2 41.6 43.3 49.2 59.0 60.7 60.4 50.7 NO. OF WIND OBSERVATION 222.0 202.2 222.1 214.7 219.4 216.1 221.9 219.1 217.0 224.1 217.1 224.1 2619.8 VECTOR WIND DIRECTION (MEAN) 199 124 109 104 92 86 95 97 97 113 141 172 106 VECTOR WIND MAGNITUDE(KNOTS) 0.9 1.4 2.0 2.1 2.0 2.3 3.6 3.9 2.6 1.5 1.0 0.9 1.8 WIND STEADINESES (MEAN %) 25.7 35.9 45.5 46.7 44.4 47.9 67.9 73.6 59.1 45.5 33.3 28.1 42.9 WIND SPEED (MEAN KNOTS) 3.5 3.9 4.4 4.5 4.5 4.8 5.3 5.3 4.4 3.3 3.0 3.2 4.2 FASTEST WIND DIRECTION 90 140 150 130 120 270 110 110 150 120 120 160 130 FASTEST WIND SPEED (KNOTS) 35 35 35 45 35 39 31 35 29 33 35 39 45 YEAR-DAY 91-15 87-26 86-11 89- 6 89-25 88-19 90-16 89-10 86-20 90- 4 90- 7 87-13 89 DAYS WITH SKY CLEAR (0-2)/8 9.7 9.4 8.2 8.4 12.0 18.1 20.2 18.1 16.6 11.8 8.8 10.1 151.4 DAYS WITH P.CLOUDY (3-6)/8 9.2 7.4 9.4 12.1 12.3 9.2 8.4 9.1 7.7 9.0 9.3 8.8 111.9 DAYS WITH CLOUDY (7-8)/8 12.1 11.5 13.4 9.6 6.6 2.6 2.3 3.8 5.6 10.1 11.8 12.0 101.4 DAYS WITH VISIBILITY =< 2 KM 7.1 5.9 6.2 3.6 3.1 1.0 1.0 0.7 1.6 4.2 4.8 5.6 44.8 DURATION OF SUNSHINE HOURS 114.9 125.9 139.2 176.4 239.5 282.3 283.7 258.6 204.8 160.2 110.4 109.6 2205.5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1984-2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1012.8 1011.3 1009.7 1006.4 1005.4 1001.9 1000.8 1002.2 1006.3 1011.0 1012.5 1012.8 1007.8 MAX. QFE PRESSURE IN HPA 1033.7 1031.0 1036.3 1025.0 1023.2 1015.9 1012.9 1017.7 1020.4 1029.6 1032.0 1034.7 1036.3 YEAR-DAY 93- 6 94-18 90-17 85-16 92- 2 3- 6 96- 3 96-29 92-29 98- 9 87-30 3-11 90-17 MIN. QFE PRESSURE IN HPA 988.8 986.1 987.2 986.4 987.3 986.4 985.8 990.5 990.5 992.4 991.4 988.7 985.8 YEAR-DAY 0-19 1-21 88- 3 97- 5 86- 3 1-17 91- 7 2- 9 90-13 89- 2 92-22 88-26 91- 7 MEAN QNH PRESSURE IN HPA 1016.3 1014.8 1013.2 1009.9 1008.9 1005.4 1004.3 1005.7 1009.8 1014.5 1016.1 1016.3 1011.3 MAX. QNH PRESSURE IN HPA 1037.3 1034.6 1039.9 1028.6 1026.8 1019.4 1016.4 1021.3 1024.0 1033.2 1035.6 1038.3 1039.9 YEAR-DAY 93- 6 94-18 90-17 85-16 92- 2 3- 6 96- 3 96-29 92-29 98- 9 87-30 3-11 90-17 MIN. QNH PRESSURE IN HPA 992.3 989.6 990.7 989.9 990.8 989.9 989.2 994.0 994.0 995.9 994.9 992.2 989.2 YEAR-DAY 0-19 1-21 88- 3 97- 5 86- 3 1-17 91- 7 2- 9 90-13 89- 2 92-22 88-26 91- 7 MEAN QFF PRESSURE IN HPA 1016.6 1014.6 1013.9 1009.9 1009.2 1005.7 1004.6 1005.8 1010.0 1014.4 1016.6 1017.4 1011.6 MAX. QFF PRESSURE IN HPA 1037.8 1035.2 1037.2 1029.0 1027.1 1019.8 1016.6 1021.4 1024.2 1033.5 1035.1 1038.8 1038.8 YEAR-DAY 93- 6 94-18 85-10 85-16 92- 2 3- 6 96- 3 96-29 92-29 98- 9 84-30 3-11 3-11 MIN. QFF PRESSURE IN HPA 992.7 989.9 993.3 990.1 990.9 989.9 989.3 994.0 994.5 996.4 995.1 993.4 989.3 YEAR-DAY 0-19 1-21 2-26 97- 5 86- 3 1-17 98- 5 2- 9 96- 8 98- 1 92-22 85-19 98- 5 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1012.8 1010.6 1009.9 1006.1 1005.6 1002.3 1001.1 1002.3 1006.4 1010.5 1012.7 1013.5 1007.8 MAX. QFE PRESSURE IN HPA 1031.9 1030.4 1032.0 1024.0 1022.2 1015.4 1011.0 1015.2 1018.9 1027.4 1028.6 1033.2 1033.2 YEAR-DAY 96-10 94-18 85-10 85-17 3- 1 3- 6 92-12 96-29 92-29 98- 9 97- 7 2- 3 2- 3 MIN. QFE PRESSURE IN HPA 993.1 987.7 990.7 992.0 991.6 990.0 991.3 991.5 992.5 996.0 995.5 989.6 987.7 YEAR-DAY 0-21 1-21 2-27 95-19 86- 4 95-29 98- 6 0- 3 96- 8 96-27 92-22 85-19 1-21 MEAN QNH PRESSURE IN HPA 1016.4 1014.1 1013.4 1009.6 1009.1 1005.8 1004.6 1005.8 1009.9 1014.0 1016.2 1017.1 1011.3 MAX. QNH PRESSURE IN HPA 1035.5 1034.0 1035.6 1027.6 1025.8 1018.9 1014.5 1018.7 1022.5 1031.0 1032.2 1036.8 1036.8 YEAR-DAY 96-10 94-18 85-10 85-17 3- 1 3- 6 92-12 96-29 92-29 98- 9 97- 7 2- 3 2- 3 MIN. QNH PRESSURE IN HPA 996.6 991.2 994.2 995.5 995.1 993.5 994.8 995.0 996.0 999.5 999.0 993.1 991.2 YEAR-DAY 0-21 1-21 2-27 95-19 86- 4 95-29 98- 6 0- 3 96- 8 96-27 92-22 85-19 1-21 MEAN QFF PRESSURE IN HPA 1016.8 1014.5 1013.8 1009.9 1009.3 1005.9 1004.7 1005.9 1010.1 1014.2 1016.6 1017.5 1011.6 MAX. QFF PRESSURE IN HPA 1036.0 1034.5 1036.1 1028.0 1026.1 1019.3 1014.8 1018.9 1022.7 1031.3 1032.6 1037.3 1037.3 YEAR-DAY 96-10 94-18 85-10 85-17 3- 1 3- 6 92-12 96-29 92-29 98- 9 97- 7 2- 3 2- 3 MIN. QFF PRESSURE IN HPA 997.0 991.5 994.4 995.7 995.3 993.6 994.9 995.0 996.1 999.7 999.3 993.4 991.5 YEAR-DAY 0-21 1-21 2-27 95-19 86- 4 95-29 98- 6 0- 3 96- 8 96-27 92-22 85-19 1-21 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1012.8 1011.4 1010.0 1006.8 1006.0 1002.8 1001.8 1003.0 1006.9 1011.2 1012.6 1012.8 1008.2 MAX. QFE PRESSURE IN HPA 1032.8 1030.8 1036.2 1023.3 1022.4 1015.8 1012.0 1016.9 1019.7 1028.7 1030.6 1032.9 1036.2 YEAR-DAY 93- 6 94-18 90-17 85-17 92- 2 3- 6 96- 3 96-29 89-22 98- 9 87-29 2- 3 90-17 MIN. QFE PRESSURE IN HPA 993.8 986.1 987.2 991.3 991.6 990.3 989.7 992.8 994.0 992.4 995.0 988.7 986.1 YEAR-DAY 0-19 1-21 88- 3 95-19 86- 3 95-29 91- 7 0- 3 96- 8 89- 2 92-22 88-26 1-21 MEAN QNH PRESSURE IN HPA 1016.3 1014.9 1013.5 1010.3 1009.5 1006.3 1005.3 1006.5 1010.4 1014.7 1016.2 1016.3 1011.7 MAX. QNH PRESSURE IN HPA 1036.4 1034.4 1039.8 1026.9 1026.0 1019.3 1015.5 1020.4 1023.3 1032.3 1034.2 1036.5 1039.8 YEAR-DAY 93- 6 94-18 90-17 85-17 92- 2 3- 6 96- 3 96-29 89-22 98- 9 87-29 2- 3 90-17 MIN. QNH PRESSURE IN HPA 997.3 989.6 990.7 994.8 995.1 993.8 993.2 996.3 997.5 995.9 998.5 992.2 989.6 YEAR-DAY 0-19 1-21 88- 3 95-19 86- 3 95-29 91- 7 0- 3 96- 8 89- 2 92-22 88-26 1-21 MEAN QFF PRESSURE IN HPA 1016.8 1015.3 1013.9 1010.7 1009.8 1006.5 1005.4 1006.6 1010.6 1015.0 1016.6 1016.7 1012.0 MAX. QFF PRESSURE IN HPA 1036.9 1034.9 1040.4 1027.3 1026.3 1019.7 1015.7 1020.6 1023.6 1032.7 1034.7 1037.0 1040.4 YEAR-DAY 93- 6 94-18 90-17 85-17 92- 2 3- 6 96- 3 96-29 89-22 98- 9 87-29 2- 3 90-17 MIN. QFF PRESSURE IN HPA 997.8 989.9 991.0 995.0 995.3 993.9 993.2 996.3 997.6 996.0 998.8 992.6 989.9 YEAR-DAY 0-19 1-21 88- 3 95-19 86- 3 95-29 91- 7 0- 3 96- 8 89- 2 92-22 88-26 1-21 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION PARSABAD MOGHAN (40700) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 39 39 N LONGITUDE 47 55 E DATA PROCESSING CENTER ELEVATION 31.9 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1984-2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1013.8 1012.4 1010.9 1007.5 1006.6 1003.1 1002.1 1003.5 1007.6 1012.1 1013.6 1013.7 1008.9 MAX. QFE PRESSURE IN HPA 1033.7 1031.0 1036.3 1024.0 1023.2 1015.9 1012.9 1017.7 1020.4 1029.6 1032.0 1034.7 1036.3 YEAR-DAY 93- 6 94-18 90-17 96- 4 92- 2 3- 6 96- 3 96-29 92-29 98- 9 87-30 3-11 90-17 MIN. QFE PRESSURE IN HPA 993.6 988.6 990.0 991.2 991.7 990.0 989.5 993.9 994.0 992.9 994.6 989.6 988.6 YEAR-DAY 0-19 1-21 88- 3 97- 5 86- 3 95-29 91- 7 2-17 96- 8 89- 2 92-22 88-26 1-21 MEAN QNH PRESSURE IN HPA 1017.3 1015.9 1014.5 1011.0 1010.1 1006.6 1005.6 1007.0 1011.1 1015.7 1017.1 1017.2 1012.4 MAX. QNH PRESSURE IN HPA 1037.3 1034.6 1039.9 1027.6 1026.8 1019.4 1016.4 1021.3 1024.0 1033.2 1035.6 1038.3 1039.9 YEAR-DAY 93- 6 94-18 90-17 96- 4 92- 2 3- 6 96- 3 96-29 92-29 98- 9 87-30 3-11 90-17 MIN. QNH PRESSURE IN HPA 997.1 992.1 993.5 994.7 995.2 993.5 993.0 997.4 997.5 996.4 998.1 993.1 992.1 YEAR-DAY 0-19 1-21 88- 3 97- 5 86- 3 95-29 91- 7 2-17 96- 8 89- 2 92-22 88-26 1-21 MEAN QFF PRESSURE IN HPA 1017.7 1015.6 1015.2 1011.1 1010.4 1006.9 1005.9 1007.2 1011.3 1015.5 1017.7 1018.3 1012.7 MAX. QFF PRESSURE IN HPA 1037.8 1035.2 1037.2 1028.0 1027.1 1019.8 1016.6 1021.4 1024.2 1033.5 1034.6 1038.8 1038.8 YEAR-DAY 93- 6 94-18 85-10 96- 4 92- 2 3- 6 96- 3 96-29 92-29 98- 9 97- 7 3-11 3-11 MIN. QFF PRESSURE IN HPA 997.6 992.5 997.1 995.0 995.4 993.6 995.1 997.5 997.6 1000.3 998.3 996.8 992.5 YEAR-DAY 0-19 1-21 1-24 97- 5 86- 3 95-29 98- 5 2-17 96- 8 98- 1 92-22 85-19 1-21 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1012.9 1011.7 1010.2 1006.8 1005.8 1002.2 1001.1 1002.5 1006.6 1011.2 1012.6 1012.9 1008.0 MAX. QFE PRESSURE IN HPA 1032.2 1031.0 1034.0 1023.7 1022.3 1015.0 1012.1 1016.9 1020.0 1029.3 1031.0 1034.4 1034.4 YEAR-DAY 93- 6 94-18 90-16 1- 1 92- 2 96-11 96- 3 96-29 97- 7 98- 9 87-29 3-11 3-11 MIN. QFE PRESSURE IN HPA 989.1 989.0 988.7 988.7 990.3 987.8 987.9 992.8 992.2 994.1 992.9 991.2 987.8 YEAR-DAY 0-19 99-20 88- 3 97- 9 86- 3 95-29 91- 7 97-14 96- 8 98- 1 92-22 86-27 95-29 MEAN QNH PRESSURE IN HPA 1016.5 1015.2 1013.8 1010.3 1009.3 1005.7 1004.6 1006.0 1010.1 1014.8 1016.2 1016.4 1011.6 MAX. QNH PRESSURE IN HPA 1035.8 1034.6 1037.6 1027.3 1025.9 1018.5 1015.6 1020.4 1023.6 1032.9 1034.6 1038.0 1038.0 YEAR-DAY 93- 6 94-18 90-16 1- 1 92- 2 96-11 96- 3 96-29 97- 7 98- 9 87-29 3-11 3-11 MIN. QNH PRESSURE IN HPA 992.6 992.5 992.2 992.2 993.8 991.3 991.4 996.3 995.7 997.6 996.4 994.7 991.3 YEAR-DAY 0-19 99-20 88- 3 97- 9 86- 3 95-29 91- 7 97-14 96- 8 98- 1 92-22 86-27 95-29 MEAN QFF PRESSURE IN HPA 1016.8 1015.0 1014.4 1010.3 1009.6 1006.0 1004.9 1006.2 1010.3 1014.6 1016.7 1017.4 1011.9 MAX. QFF PRESSURE IN HPA 1036.3 1035.1 1036.9 1027.6 1026.2 1018.7 1015.8 1020.6 1023.8 1033.2 1033.7 1038.5 1038.5 YEAR-DAY 93- 6 94-18 85-10 1- 1 92- 2 96-11 96- 3 96-29 97- 7 98- 9 97- 7 3-11 3-11 MIN. QFF PRESSURE IN HPA 993.0 992.8 996.1 992.5 994.0 991.4 992.7 996.3 995.8 997.7 996.6 997.6 991.4 YEAR-DAY 0-19 99-20 1-24 97- 9 86- 3 95-29 98- 5 97-14 96- 8 98- 1 92-22 85-19 95-29 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1011.7 1010.2 1008.8 1005.4 1004.5 1000.7 999.6 1001.0 1005.1 1010.1 1011.6 1011.9 1006.7 MAX. QFE PRESSURE IN HPA 1030.6 1030.0 1033.9 1023.1 1020.6 1014.0 1010.4 1016.0 1019.4 1027.8 1029.9 1033.3 1033.9 YEAR-DAY 93- 6 94-18 90-16 1- 1 92- 2 96-11 96- 3 96-29 97- 7 98- 9 87-29 3-11 90-16 MIN. QFE PRESSURE IN HPA 988.8 988.4 990.0 986.4 988.0 986.4 985.8 991.3 991.0 992.8 991.4 989.7 985.8 YEAR-DAY 0-19 96- 9 88- 3 97- 5 86- 3 1-17 91- 7 2- 8 96- 8 98- 1 92-22 86-27 91- 7 MEAN QNH PRESSURE IN HPA 1015.3 1013.8 1012.3 1008.9 1008.0 1004.2 1003.1 1004.5 1008.6 1013.6 1015.1 1015.4 1010.2 MAX. QNH PRESSURE IN HPA 1034.2 1033.6 1037.5 1026.7 1024.2 1017.5 1013.9 1019.5 1023.0 1031.4 1033.5 1036.9 1037.5 YEAR-DAY 93- 6 94-18 90-16 1- 1 92- 2 96-11 96- 3 96-29 97- 7 98- 9 87-29 3-11 90-16 MIN. QNH PRESSURE I