STATION CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1963 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) ***** ***** ***** ***** 29.1 31.3 31.0 28.6 28.9 28.5 25.9 22.6 ***** MINIMUN AIR TEMPERATURE (C) ***** ***** ***** ***** 25.4 27.7 28.1 26.4 24.9 24.3 21.5 17.1 ***** DAYS WITH MINIMUM TEMP. >=21 **** **** **** **** 31 30 31 31 30 31 21 6 **** DAYS WITH MINIMUM TEMP. <=-4 **** **** **** **** 0 0 0 0 0 0 0 0 **** DAYS WITH FREEZING MIN.<= 0 **** **** **** **** 0 0 0 0 0 0 0 0 **** TEMPERATURE RECORDS LOWEST(C) ***** ***** ***** ***** 23.0 25.0 26.0 25.0 23.0 22.0 17.0 12.0 ***** DAY ** ** ** ** 14 20 28 13 28 17 24 29 MAXIMUM AIR TEMPERATURE (C) ***** ***** ***** ***** 31.3 33.5 33.3 30.3 31.3 30.9 28.9 26.1 ***** DAYS WITH MAXIMUM TEMP. >=30 **** **** **** **** 30 30 31 29 25 31 14 3 **** DAYS WITH MAXIMUM TEMP. <= 0 **** **** **** **** 0 0 0 0 0 0 0 0 **** TEMPERATURE RECORDS HIGHEST(C)***** ***** ***** ***** 34.0 37.0 40.0 32.0 39.0 35.0 31.0 31.0 ***** DAY ** ** ** ** 30 25 5 1 14 14 15 9 DIF. BETWEEN (MAX.-MIN.) (C) ***** ***** ***** ***** 5.9 5.8 5.2 3.9 6.4 6.6 7.4 9.0 ***** MEAN DAILY TEMP. (MDT) (C) ***** ***** ***** ***** 28.3 30.6 30.7 28.4 28.1 27.6 25.2 21.6 ***** COOLING DEG. DAYS(BASE 21 0C)****** ****** ****** ****** 227.5 287.5 300.5 228.5 213.0 203.5 127.0 37.5 ****** HEATING DEG. DAYS(BASE 18 0C)****** ****** ****** ****** 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.5 ****** DEWPOINT (MEAN C) ***** ***** ***** ***** 22.2 25.4 25.6 23.6 23.3 23.9 17.6 10.6 ***** MIXING RATIO (G/KG) ****** ****** ****** ****** 17.40 20.96 21.28 18.74 18.34 18.92 13.37 8.48 ****** VAPOUR PRESSURE (HPA) ****** ****** ****** ****** 27.34 32.58 32.94 29.23 28.78 29.83 21.30 13.65 ****** SATURATION DEF. (HPA) ****** ****** ****** ****** 13.08 13.23 12.32 10.03 11.36 9.36 12.40 14.28 ****** RELATIVE HUMIDITY (MEAN %) *** *** *** *** 68 72 73 75 73 77 63 50 *** RELATIVE HUMIDITY (MAX. %) *** *** *** *** 79 82 82 82 84 90 79 66 *** RELATIVE HUMIDITY (MIN. %) *** *** *** *** 56 63 66 68 63 68 53 37 *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** *** *** 76 80 78 79 82 90 74 60 *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** *** *** 63 67 68 70 65 69 60 42 *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** *** *** 76 76 79 82 80 83 67 58 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. ****** ****** ****** 0.0 1.0 0.0 0.0 0.8 0.0 0.0 6.5 11.0 ****** DAYS WITH PRECIPITATION >=10 **** **** **** 0 0 0 0 0 0 0 0 1 **** DAYS WITH PRECIPITATION >= 5 **** **** **** 0 0 0 0 0 0 0 1 1 **** DAYS WITH PRECIPITATION >= 1 **** **** **** 0 1 0 0 0 0 0 1 1 **** DAYS WITH PRECIPITATION **** **** **** 0 2 0 0 1 0 0 3 2 **** GREATEST DAILY PRECIPITATION ****** ****** ****** 0.0 1.0 0.0 0.0 0.8 0.0 0.0 6.0 11.0 ****** DAY ** ** ** ** 11 ** ** 3 ** ** 23 27 DAY WITH THUNDER STORM **** **** **** 0 0 0 0 0 0 1 0 0 **** DAYS WITH SNOW OR SLEET **** **** **** 0 0 0 0 0 0 0 0 0 **** DAYS WITH DUST **** **** **** 2 5 4 10 1 0 1 3 4 **** WIND DIRECTION (PREVAILING) *** *** *** *** 225 135 135 135 180 180 225 225 *** PREVAILING WIND SPEED(KNOTS) **** **** **** **** 8.9 9.2 13.1 9.8 6.9 4.5 7.1 5.9 **** PREVAILING WIND PERCENT ***** ***** ***** ***** 29.0 30.0 45.2 65.2 28.0 28.4 22.7 16.1 ***** CALMS PERCENT OF WIND ***** ***** ***** ***** 8.4 4.0 3.2 1.9 8.7 9.0 8.7 13.5 ***** NO. OF WIND OBSERVATION **** **** **** 52 155 150 155 155 150 155 150 155 1277 VECTOR WIND DIRECTION (MEAN) *** *** *** *** 220 167 135 138 163 172 170 213 *** VECTOR WIND MAGNITUDE(KNOTS) **** **** **** **** 5.0 5.2 8.2 8.0 4.2 2.9 2.1 1.4 **** WIND STEADINESES (MEAN %) ***** ***** ***** ***** 75.8 59.8 85.4 92.0 68.9 60.4 38.9 26.9 ***** WIND SPEED (MEAN KNOTS) **** **** **** **** 6.6 8.7 9.6 8.7 6.1 4.8 5.4 5.2 **** FASTEST WIND DIRECTION *** *** *** *** 260 240 130 130 240 130 40 290 *** FASTEST WIND SPEED (KNOTS) *** *** *** *** 35 27 24 20 20 17 24 28 *** DAY ** ** ** ** 3 1 15 13 9 8 21 12 DAYS WITH SKY CLEAR (0-2)/8 **** **** **** 6 19 26 22 6 23 29 15 22 **** DAYS WITH P.CLOUDY (3-6)/8 **** **** **** 3 7 4 7 24 7 2 12 3 **** DAYS WITH CLOUDY (7-8)/8 **** **** **** 2 5 0 2 1 0 0 3 5 **** DAYS WITH VISIBILITY =< 2 KM **** **** **** 1 1 0 3 0 0 1 2 2 **** DURATION OF SUNSHINE HOURS ****** ****** ****** ****** 332.2 307.7 286.6 255.4 292.5 304.9 252.3 251.5 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1963 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 1005.8 999.5 996.6 999.5 1005.5 1011.1 1014.5 1016.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 1010.8 1004.3 1003.4 1004.6 1015.2 1019.3 1018.6 1022.8 ****** DAY-HOUR **-** **-** **-** **-** 16- 6 13- 6 24- 6 29- 6 23- 6 29- 6 11- 6 21- 6 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 1000.3 994.8 991.0 994.0 998.0 1007.0 1010.0 1010.9 ****** DAY-HOUR **-** **-** **-** **-** 30-12 4-12 8-12 8-12 9-12 25-12 16-12 11-12 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1006.4 1000.1 997.2 1000.1 1006.1 1011.7 1015.2 1017.5 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1011.5 1005.0 1004.1 1005.3 1015.9 1020.0 1019.3 1023.5 ****** DAY-HOUR **-** **-** **-** **-** 16- 6 13- 6 24- 6 29- 6 23- 6 29- 6 11- 6 21- 6 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1000.9 995.4 991.6 994.6 998.6 1007.7 1010.7 1011.6 ****** DAY-HOUR **-** **-** **-** **-** 30-12 4-12 8-12 8-12 9-12 25-12 16-12 11-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 1006.3 1000.4 997.5 1000.3 1006.1 1011.5 1015.2 1017.4 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 1009.9 1004.1 1003.3 1003.6 1014.8 1016.4 1017.5 1022.0 ****** DAY ** ** ** ** 16 13 24 25 23 21 11 20 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 1002.4 997.4 993.0 996.3 1000.3 1008.5 1012.4 1013.9 ****** DAY ** ** ** ** 31 30 12 8 2 7 17 11 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1006.9 1001.1 998.1 1001.0 1006.8 1012.2 1015.9 1018.1 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1010.6 1004.8 1004.0 1004.3 1015.5 1017.1 1018.2 1022.7 ****** DAY ** ** ** ** 16 13 24 25 23 21 11 20 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1003.0 998.0 993.6 996.9 1000.9 1009.2 1013.1 1014.6 ****** DAY ** ** ** ** 31 30 12 8 2 7 17 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1007.2 1001.3 998.4 1001.2 1007.0 1012.4 1016.1 1018.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1010.8 1005.0 1004.2 1004.5 1015.7 1017.3 1018.4 1022.9 ****** DAY ** ** ** ** 16 13 24 25 23 21 11 20 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 1003.3 998.3 993.9 997.2 1001.2 1009.4 1013.3 1014.8 ****** DAY ** ** ** ** 31 30 12 8 2 7 17 11 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1963 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 1007.2 1000.9 997.9 1001.2 1007.2 1013.0 1016.3 1018.8 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 1010.8 1004.3 1003.4 1004.6 1015.2 1019.3 1018.6 1022.8 ****** DAY ** ** ** ** 16 13 24 29 23 29 11 21 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 1003.1 997.9 993.0 996.7 1001.4 1009.6 1013.7 1014.9 ****** DAY ** ** ** ** 30 30 12 8 2 7 16 2 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1007.8 1001.6 998.5 1001.8 1007.9 1013.7 1017.0 1019.4 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1011.5 1005.0 1004.1 1005.3 1015.9 1020.0 1019.3 1023.5 ****** DAY ** ** ** ** 16 13 24 29 23 29 11 21 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1003.8 998.5 993.6 997.3 1002.0 1010.3 1014.4 1015.6 ****** DAY ** ** ** ** 30 30 12 8 2 7 16 2 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 ****** ****** ****** ****** 1006.1 999.7 996.7 999.7 1005.5 1010.9 1014.0 1016.4 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 1009.4 1003.1 1002.4 1002.6 1013.5 1015.1 1015.8 1020.2 ****** DAY ** ** ** ** 16 26 24 3 23 19 3 21 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 1001.9 996.0 991.5 995.7 999.5 1008.1 1011.3 1012.5 ****** DAY ** ** ** ** 30 4 12 8 9 7 25 11 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1006.8 1000.4 997.4 1000.3 1006.2 1011.6 1014.6 1017.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1010.1 1003.8 1003.0 1003.2 1014.2 1015.8 1016.5 1020.9 ****** DAY ** ** ** ** 16 26 24 3 23 19 3 21 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1002.5 996.6 992.1 996.3 1000.1 1008.8 1012.0 1013.2 ****** DAY ** ** ** ** 30 4 12 8 9 7 25 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 ****** ****** ****** ****** 1004.6 998.1 995.3 998.0 1004.0 1009.6 1013.0 1015.3 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 1007.6 1001.8 1000.3 1000.8 1012.3 1013.7 1014.7 1019.1 ****** DAY ** ** ** ** 6 26 23 24 23 19 9 21 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 1000.3 994.8 991.0 994.0 998.0 1007.0 1010.0 1010.9 ****** DAY ** ** ** ** 30 4 8 8 9 25 16 11 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1005.2 998.8 995.9 998.6 1004.6 1010.2 1013.6 1016.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1008.3 1002.4 1000.9 1001.4 1013.0 1014.4 1015.4 1019.8 ****** DAY ** ** ** ** 6 26 23 24 23 19 9 21 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1000.9 995.4 991.6 994.6 998.6 1007.7 1010.7 1011.6 ****** DAY ** ** ** ** 30 4 8 8 9 25 16 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1963 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 1004.8 998.4 995.7 998.3 1004.6 1010.4 1014.3 1016.6 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 1008.7 1002.3 1001.5 1001.4 1012.5 1014.2 1017.0 1020.6 ****** DAY ** ** ** ** 3 26 23 24 23 19 23 16 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 1000.7 995.3 991.1 994.3 998.0 1007.5 1011.4 1012.2 ****** DAY ** ** ** ** 30 4 8 7 9 6 25 11 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1005.4 999.0 996.3 999.0 1005.3 1011.0 1014.9 1017.2 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1009.4 1002.9 1002.1 1002.0 1013.2 1014.9 1017.7 1021.3 ****** DAY ** ** ** ** 3 26 23 24 23 19 23 16 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1001.3 995.9 991.7 994.9 998.6 1008.2 1012.1 1012.9 ****** DAY ** ** ** ** 30 4 8 7 9 6 25 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1005.7 999.2 996.5 999.2 1005.5 1011.3 1015.2 1017.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1009.6 1003.2 1002.4 1002.3 1013.4 1015.1 1017.9 1021.5 ****** DAY ** ** ** ** 3 26 23 24 23 19 23 16 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 1001.6 996.2 992.0 995.2 998.9 1008.4 1012.3 1013.1 ****** DAY ** ** ** ** 30 4 8 7 9 6 25 11 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1964 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 18.2 21.7 25.2 27.7 30.4 31.7 30.6 29.3 28.7 27.7 24.6 19.5 26.3 MINIMUN AIR TEMPERATURE (C) 13.9 16.9 19.7 23.4 25.8 28.4 28.3 26.6 25.0 21.2 17.4 13.3 21.7 DAYS WITH MINIMUM TEMP. >=21 0 1 9 29 31 30 31 31 30 16 1 0 209 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 7.0 11.0 16.0 19.0 22.0 26.0 27.0 25.0 22.0 17.0 15.0 7.0 7.0 DAY 23 1 7 4 8 6 19 23 27 28 6 11 MAXIMUM AIR TEMPERATURE (C) 21.3 24.8 28.6 30.5 33.4 34.0 32.4 31.2 31.0 32.0 28.7 23.5 29.3 DAYS WITH MAXIMUM TEMP. >=30 0 1 10 22 31 30 31 31 30 31 9 0 226 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 25.0 30.0 33.0 34.0 36.0 36.0 36.0 34.0 34.0 35.0 33.0 29.0 36.0 DAY 1 29 24 17 20 17 5 9 19 20 13 16 DIF. BETWEEN (MAX.-MIN.) (C) 7.4 7.9 8.9 7.1 7.6 5.6 4.1 4.6 6.0 10.8 11.3 10.2 7.6 MEAN DAILY TEMP. (MDT) (C) 17.6 20.9 24.2 26.9 29.6 31.2 30.4 28.9 28.0 26.6 23.0 18.4 25.5 COOLING DEG. DAYS(BASE 21 0C) 2.0 17.0 98.5 177.5 267.5 306.5 290.5 245.0 210.5 173.0 61.0 3.5 1852.5 HEATING DEG. DAYS(BASE 18 0C) 38.0 2.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 21.5 62.0 DEWPOINT (MEAN C) 6.7 12.9 17.9 21.1 23.7 26.3 25.5 25.1 23.7 17.7 12.3 2.8 18.0 MIXING RATIO (G/KG) 6.68 9.74 13.16 16.10 19.01 22.06 21.11 20.63 18.87 14.07 9.68 5.74 14.74 VAPOUR PRESSURE (HPA) 10.80 15.62 20.96 25.39 29.75 34.19 32.73 32.01 29.55 22.26 15.53 9.27 23.17 SATURATION DEF. (HPA) 10.42 10.61 11.44 12.04 13.95 12.69 11.33 8.82 9.94 15.33 15.98 13.72 12.19 RELATIVE HUMIDITY (MEAN %) 51 60 67 69 69 74 75 79 75 61 51 40 64 RELATIVE HUMIDITY (MAX. %) 64 76 84 83 82 85 83 88 88 81 70 58 79 RELATIVE HUMIDITY (MIN. %) 40 46 50 58 56 64 67 71 65 43 36 27 52 RELATIVE HUMIDITY (MEAN% 03UTC) 60 74 80 76 75 81 80 84 78 70 61 43 72 RELATIVE HUMIDITY (MEAN% 09UTC) 43 52 55 61 61 66 68 73 70 49 41 32 56 RELATIVE HUMIDITY (MEAN% 15UTC) 55 67 77 78 78 83 82 88 85 77 63 57 74 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 37.0 1.0 3.0 0.0 0.0 0.0 4.0 10.0 0.0 0.0 0.0 0.0 55.0 DAYS WITH PRECIPITATION >=10 1 0 0 0 0 0 0 1 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 2 0 0 0 0 0 0 1 0 0 0 0 3 DAYS WITH PRECIPITATION >= 1 5 1 1 0 0 0 2 1 0 0 0 0 10 DAYS WITH PRECIPITATION 5 1 2 0 0 0 2 1 0 0 0 0 11 GREATEST DAILY PRECIPITATION 24.0 1.0 3.0 0.0 0.0 0.0 2.0 10.0 0.0 0.0 0.0 0.0 24.0 DAY 4 16 30 ** ** ** 13 25 ** ** ** ** DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 2 1 0 0 3 1 0 0 0 1 3 2 13 WIND DIRECTION (PREVAILING) 270 225 270 270 225 135 135 135 180 225 225 270 135 PREVAILING WIND SPEED(KNOTS) 8.0 6.3 10.9 10.2 10.6 11.6 12.0 11.4 7.3 6.7 11.2 6.5 9.8 PREVAILING WIND PERCENT 27.7 20.0 21.9 29.3 24.4 34.0 49.7 50.3 35.3 33.5 22.0 28.4 20.7 CALMS PERCENT OF WIND 12.9 8.3 13.5 7.3 11.3 4.7 5.2 7.1 7.3 19.4 24.7 18.1 11.7 NO. OF WIND OBSERVATION 155 145 155 150 168 150 155 155 150 155 150 155 1843 VECTOR WIND DIRECTION (MEAN) 272 177 217 223 214 153 140 133 171 196 225 261 182 VECTOR WIND MAGNITUDE(KNOTS) 2.6 2.7 3.6 4.7 4.3 6.6 8.5 8.0 5.1 3.1 4.6 2.0 3.5 WIND STEADINESES (MEAN %) 42.6 42.9 55.4 53.4 59.7 74.2 88.5 89.9 75.0 60.8 54.8 41.7 47.9 WIND SPEED (MEAN KNOTS) 6.1 6.3 6.5 8.8 7.2 8.9 9.6 8.9 6.8 5.1 8.4 4.8 7.3 FASTEST WIND DIRECTION 180 270 260 250 270 130 120 120 160 220 240 200 240 FASTEST WIND SPEED (KNOTS) 30 27 28 25 25 25 24 22 15 15 40 40 40 DAY 20 16 30 15 26 8 13 1 5 15 28 10 DAYS WITH SKY CLEAR (0-2)/8 21 19 23 21 31 24 13 14 20 31 28 21 266 DAYS WITH P.CLOUDY (3-6)/8 5 6 7 7 0 6 16 14 9 0 2 3 75 DAYS WITH CLOUDY (7-8)/8 4 4 1 2 0 0 2 3 1 0 0 7 24 DAYS WITH VISIBILITY =< 2 KM 2 0 1 0 0 0 0 0 0 0 2 0 5 DURATION OF SUNSHINE HOURS 225.5 254.4 288.9 287.4 340.6 293.4 226.4 242.8 268.7 290.0 290.9 238.3 3247.3 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1964 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1018.3 1014.9 1012.1 1007.5 1003.7 998.5 997.8 997.5 1003.9 1010.8 1015.4 1018.2 1008.2 MAX. QFE PRESSURE IN HPA 1025.2 1022.6 1019.0 1013.9 1010.8 1006.7 1004.9 1004.5 1012.3 1018.1 1019.8 1026.5 1026.5 DAY-HOUR 31- 6 3- 6 12- 6 3- 6 17- 6 2- 6 21- 6 31- 6 29- 6 29- 6 19- 6 3- 6 MIN. QFE PRESSURE IN HPA 1010.1 1008.0 1006.2 1001.1 997.8 992.9 988.2 992.4 997.8 1002.8 1011.3 1011.4 988.2 DAY-HOUR 19-12 21-12 17-12 15-12 19-15 29-12 5-15 10-12 2-15 1-12 27-12 29- 3 MEAN QNH PRESSURE IN HPA 1019.0 1015.5 1012.8 1008.2 1004.3 999.2 998.4 998.1 1004.6 1011.4 1016.1 1018.9 1008.9 MAX. QNH PRESSURE IN HPA 1025.9 1023.3 1019.7 1014.6 1011.5 1007.4 1005.6 1005.2 1013.0 1018.8 1020.5 1027.2 1027.2 DAY-HOUR 31- 6 3- 6 12- 6 3- 6 17- 6 2- 6 21- 6 31- 6 29- 6 29- 6 19- 6 3- 6 MIN. QNH PRESSURE IN HPA 1010.8 1008.7 1006.9 1001.7 998.4 993.5 988.8 993.0 998.4 1003.4 1012.0 1012.1 988.8 DAY-HOUR 19-12 21-12 17-12 15-12 19-15 29-12 5-15 10-12 2-15 1-12 27-12 29- 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 1018.7 1015.2 1012.4 1007.9 1004.1 999.6 998.4 998.2 1004.3 1011.2 1015.8 1018.6 1008.7 MAX. QFE PRESSURE IN HPA 1024.9 1021.1 1017.3 1013.0 1010.0 1006.3 1004.0 1003.2 1010.9 1016.6 1018.5 1024.6 1024.9 DAY 31 1 12 3 17 3 21 31 29 29 19 3 MIN. QFE PRESSURE IN HPA 1012.3 1009.0 1008.5 1003.6 1000.4 995.7 991.3 994.2 1000.2 1005.1 1013.0 1011.4 991.3 DAY 20 21 29 16 12 28 6 10 2 2 27 29 MEAN QNH PRESSURE IN HPA 1019.3 1015.8 1013.1 1008.6 1004.8 1000.2 999.0 998.8 1005.0 1011.9 1016.4 1019.3 1009.3 MAX. QNH PRESSURE IN HPA 1025.6 1021.8 1018.0 1013.7 1010.7 1007.0 1004.7 1003.9 1011.6 1017.3 1019.2 1025.3 1025.6 DAY 31 1 12 3 17 3 21 31 29 29 19 3 MIN. QNH PRESSURE IN HPA 1013.0 1009.7 1009.2 1004.3 1001.0 996.3 991.9 994.8 1000.8 1005.8 1013.7 1012.1 991.9 DAY 20 21 29 16 12 28 6 10 2 2 27 29 MEAN QFF PRESSURE IN HPA 1019.6 1016.1 1013.4 1008.8 1005.0 1000.5 999.2 999.1 1005.2 1012.1 1016.7 1019.5 1009.6 MAX. QFF PRESSURE IN HPA 1025.9 1022.1 1018.2 1013.9 1010.9 1007.2 1004.9 1004.1 1011.8 1017.5 1019.4 1025.6 1025.9 DAY 31 1 12 3 17 3 21 31 29 29 19 3 MIN. QFF PRESSURE IN HPA 1013.2 1009.9 1009.4 1004.5 1001.3 996.6 992.2 995.1 1001.1 1006.0 1013.9 1012.3 992.2 DAY 20 21 29 16 12 28 6 10 2 2 27 29 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1964 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1020.0 1016.8 1013.9 1009.0 1005.2 1000.0 999.0 999.0 1005.7 1012.7 1017.4 1020.5 1009.9 MAX. QFE PRESSURE IN HPA 1025.2 1022.6 1019.0 1013.9 1010.8 1006.7 1004.9 1004.5 1012.3 1018.1 1019.8 1026.5 1026.5 DAY 31 3 12 3 17 2 21 31 29 29 19 3 MIN. QFE PRESSURE IN HPA 1013.5 1010.6 1009.1 1004.9 1001.5 995.7 991.8 994.6 1001.3 1006.6 1014.5 1016.2 991.8 DAY 21 21 29 16 28 29 5 10 2 2 27 31 MEAN QNH PRESSURE IN HPA 1020.7 1017.4 1014.5 1009.7 1005.9 1000.6 999.7 999.7 1006.4 1013.4 1018.0 1021.2 1010.6 MAX. QNH PRESSURE IN HPA 1025.9 1023.3 1019.7 1014.6 1011.5 1007.4 1005.6 1005.2 1013.0 1018.8 1020.5 1027.2 1027.2 DAY 31 3 12 3 17 2 21 31 29 29 19 3 MIN. QNH PRESSURE IN HPA 1014.2 1011.3 1009.8 1005.6 1002.1 996.3 992.4 995.2 1001.9 1007.3 1015.2 1016.9 992.4 DAY 21 21 29 16 28 29 5 10 2 2 27 31 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1018.2 1015.0 1012.2 1007.9 1004.2 998.9 998.2 997.9 1004.5 1011.1 1015.5 1018.2 1008.5 MAX. QFE PRESSURE IN HPA 1022.9 1021.4 1018.0 1013.1 1009.8 1005.6 1003.9 1003.0 1011.7 1016.5 1018.8 1023.8 1023.8 DAY 31 1 12 3 16 3 21 31 28 29 19 3 MIN. QFE PRESSURE IN HPA 1013.0 1009.2 1007.9 1003.0 1000.7 994.3 989.7 993.9 1000.0 1004.7 1012.6 1014.0 989.7 DAY 20 21 17 15 12 29 5 10 2 1 27 17 MEAN QNH PRESSURE IN HPA 1018.8 1015.6 1012.8 1008.5 1004.9 999.5 998.9 998.6 1005.1 1011.7 1016.2 1018.9 1009.1 MAX. QNH PRESSURE IN HPA 1023.6 1022.1 1018.7 1013.8 1010.5 1006.3 1004.6 1003.7 1012.4 1017.2 1019.5 1024.5 1024.5 DAY 31 1 12 3 16 3 21 31 28 29 19 3 MIN. QNH PRESSURE IN HPA 1013.7 1009.9 1008.6 1003.7 1001.3 994.9 990.3 994.5 1000.6 1005.4 1013.3 1014.7 990.3 DAY 20 21 17 15 12 29 5 10 2 1 27 17 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1016.8 1013.3 1010.5 1006.2 1002.3 997.1 996.7 996.2 1002.5 1009.3 1013.9 1016.7 1006.8 MAX. QFE PRESSURE IN HPA 1021.1 1020.0 1016.3 1011.1 1007.9 1003.8 1002.5 1001.3 1009.1 1014.8 1017.4 1021.9 1021.9 DAY 31 1 12 3 16 2 21 31 28 29 19 3 MIN. QFE PRESSURE IN HPA 1010.1 1008.0 1006.2 1001.1 998.5 992.9 989.2 992.4 998.0 1002.8 1011.3 1012.7 989.2 DAY 19 21 17 15 12 29 5 10 2 1 27 31 MEAN QNH PRESSURE IN HPA 1017.5 1014.0 1011.2 1006.9 1003.0 997.7 997.4 996.9 1003.2 1010.0 1014.6 1017.4 1007.5 MAX. QNH PRESSURE IN HPA 1021.8 1020.7 1017.0 1011.8 1008.6 1004.5 1003.1 1001.9 1009.8 1015.5 1018.1 1022.6 1022.6 DAY 31 1 12 3 16 2 21 31 28 29 19 3 MIN. QNH PRESSURE IN HPA 1010.8 1008.7 1006.9 1001.7 999.1 993.5 989.8 993.0 998.6 1003.4 1012.0 1013.4 989.8 DAY 19 21 17 15 12 29 5 10 2 1 27 31 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1964 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1018.0 1014.2 1011.6 1006.7 1002.3 997.2 996.6 996.0 1002.7 1009.6 1014.6 1017.2 1007.2 MAX. QFE PRESSURE IN HPA 1022.6 1020.7 1017.6 1011.7 1007.8 1004.9 1002.4 1001.3 1010.1 1017.6 1018.1 1022.5 1022.6 DAY 31 3 12 3 16 3 21 31 28 26 19 3 MIN. QFE PRESSURE IN HPA 1010.7 1010.2 1006.9 1001.6 997.8 992.9 988.2 992.4 997.8 1003.4 1011.6 1012.7 988.2 DAY 19 21 17 15 19 30 5 10 2 6 27 31 MEAN QNH PRESSURE IN HPA 1018.6 1014.8 1012.2 1007.3 1002.9 997.9 997.2 996.7 1003.4 1010.3 1015.2 1017.9 1007.9 MAX. QNH PRESSURE IN HPA 1023.3 1021.4 1018.3 1012.4 1008.5 1005.6 1003.0 1001.9 1010.8 1018.3 1018.8 1023.2 1023.3 DAY 31 3 12 3 16 3 21 31 28 26 19 3 MIN. QNH PRESSURE IN HPA 1011.4 1010.9 1007.6 1002.2 998.4 993.5 988.8 993.0 998.4 1004.1 1012.3 1013.4 988.8 DAY 19 21 17 15 19 30 5 10 2 6 27 31 MEAN QFF PRESSURE IN HPA 1018.9 1015.1 1012.5 1007.6 1003.1 998.1 997.5 996.9 1003.6 1010.6 1015.5 1018.2 1008.1 MAX. QFF PRESSURE IN HPA 1023.6 1021.6 1018.5 1012.6 1008.7 1005.8 1003.3 1002.2 1011.0 1018.5 1019.0 1023.5 1023.6 DAY 31 3 12 3 16 3 21 31 28 26 19 3 MIN. QFF PRESSURE IN HPA 1011.6 1011.1 1007.8 1002.5 998.7 993.8 989.1 993.3 998.7 1004.3 1012.5 1013.6 989.1 DAY 19 21 17 15 19 30 5 10 2 6 27 31 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 CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1965 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 20.8 22.4 24.7 25.3 29.8 31.8 30.7 29.2 29.4 29.0 26.2 22.5 26.8 MINIMUN AIR TEMPERATURE (C) 16.6 17.7 19.5 21.0 24.8 27.7 27.9 26.2 24.3 24.2 20.8 16.2 22.2 DAYS WITH MINIMUM TEMP. >=21 0 1 9 20 31 30 31 31 30 31 18 1 233 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 13.0 14.0 16.0 16.0 22.0 26.0 26.0 24.0 22.0 21.0 16.0 9.0 9.0 DAY 1 13 2 11 7 6 13 9 24 31 30 23 MAXIMUM AIR TEMPERATURE (C) 23.9 25.5 27.8 28.1 33.0 34.2 32.7 31.2 31.7 31.8 29.4 26.1 29.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 3 7 31 30 31 31 30 31 13 2 209 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 26.0 29.0 31.0 34.0 36.0 40.0 35.0 33.0 34.0 34.0 33.0 30.0 40.0 DAY 30 12 30 30 22 16 14 1 7 5 1 4 DIF. BETWEEN (MAX.-MIN.) (C) 7.3 7.8 8.3 7.1 8.2 6.5 4.8 5.0 7.4 7.6 8.6 9.9 7.4 MEAN DAILY TEMP. (MDT) (C) 20.3 21.6 23.7 24.5 28.9 30.9 30.3 28.7 28.0 28.0 25.1 21.2 25.9 COOLING DEG. DAYS(BASE 21 0C) 6.0 21.0 82.5 107.5 244.0 298.5 288.0 238.0 209.5 218.0 123.0 26.0 1862.0 HEATING DEG. DAYS(BASE 18 0C) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5.5 5.5 DEWPOINT (MEAN C) 14.6 14.8 16.4 19.0 23.7 25.8 25.2 24.2 24.6 23.7 18.3 11.0 20.1 MIXING RATIO (G/KG) 10.60 10.88 12.33 14.06 18.96 21.54 20.78 19.45 19.76 18.80 13.61 8.67 15.79 VAPOUR PRESSURE (HPA) 17.02 17.41 19.65 22.31 29.69 33.45 32.26 30.37 30.96 29.63 21.69 13.95 24.87 SATURATION DEF. (HPA) 7.74 9.99 11.83 10.28 12.67 13.68 12.00 10.22 10.17 10.64 12.68 13.88 11.31 RELATIVE HUMIDITY (MEAN %) 69 65 64 69 71 72 73 75 76 75 64 51 69 RELATIVE HUMIDITY (MAX. %) 82 81 81 82 85 83 83 85 87 88 78 68 82 RELATIVE HUMIDITY (MIN. %) 59 53 49 58 58 63 65 68 66 62 52 39 58 RELATIVE HUMIDITY (MEAN% 03UTC) 78 77 76 77 78 76 79 79 85 84 74 65 77 RELATIVE HUMIDITY (MEAN% 09UTC) 62 56 52 61 63 67 67 69 68 65 55 42 61 RELATIVE HUMIDITY (MEAN% 15UTC) 76 73 74 78 82 81 82 85 84 84 72 59 78 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 62.0 0.0 0.0 17.3 0.0 0.0 0.4 0.0 0.0 0.0 0.0 2.0 81.7 DAYS WITH PRECIPITATION >=10 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 3 0 0 1 0 0 0 0 0 0 0 0 4 DAYS WITH PRECIPITATION >= 1 4 0 0 5 0 0 0 0 0 0 0 1 10 DAYS WITH PRECIPITATION 5 0 0 6 0 0 1 0 0 0 0 1 13 GREATEST DAILY PRECIPITATION 43.0 0.0 0.0 9.0 0.0 0.0 0.4 0.0 0.0 0.0 0.0 2.0 43.0 DAY 11 ** ** 5 ** ** 23 ** ** ** ** 21 DAY WITH THUNDER STORM 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 1 0 4 0 6 0 2 0 0 0 1 0 14 WIND DIRECTION (PREVAILING) 270 270 225 270 225 135 135 135 135 270 180 270 135 PREVAILING WIND SPEED(KNOTS) 4.0 6.6 6.7 6.6 7.6 7.0 8.7 8.0 7.9 6.0 5.3 5.0 7.6 PREVAILING WIND PERCENT 17.4 27.1 25.2 24.7 21.9 36.7 50.3 55.5 30.7 27.1 21.3 17.4 20.1 CALMS PERCENT OF WIND 17.4 17.9 11.6 13.3 16.8 12.7 4.5 5.2 36.0 36.8 36.7 24.5 19.4 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 229 224 222 227 189 152 143 141 156 221 200 224 179 VECTOR WIND MAGNITUDE(KNOTS) 0.5 2.2 3.5 3.2 3.1 3.4 5.9 6.3 3.6 2.4 1.6 1.3 2.5 WIND STEADINESES (MEAN %) 14.3 47.8 66.0 65.3 59.6 66.7 84.3 90.0 80.0 61.5 48.5 35.1 52.1 WIND SPEED (MEAN KNOTS) 3.5 4.6 5.3 4.9 5.2 5.1 7.0 7.0 4.5 3.9 3.3 3.7 4.8 FASTEST WIND DIRECTION 100 140 250 200 240 130 130 130 220 250 260 60 200 FASTEST WIND SPEED (KNOTS) 15 18 18 30 25 18 25 17 15 15 10 10 30 DAY 10 23 6 15 5 7 28 18 4 16 3 11 DAYS WITH SKY CLEAR (0-2)/8 13 24 25 11 31 25 17 17 29 31 26 27 276 DAYS WITH P.CLOUDY (3-6)/8 13 3 5 12 0 5 11 14 1 0 4 4 72 DAYS WITH CLOUDY (7-8)/8 5 1 1 7 0 0 3 0 0 0 0 0 17 DAYS WITH VISIBILITY =< 2 KM 1 1 1 0 0 0 1 0 0 1 1 0 6 DURATION OF SUNSHINE HOURS 238.7 260.9 308.9 240.9 336.8 323.8 272.6 283.8 ****** 312.2 290.9 287.3 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1965 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1016.5 1013.3 1012.3 1010.5 1004.8 999.8 998.0 1001.8 1005.9 1010.5 1015.0 1016.4 1008.7 MAX. QFE PRESSURE IN HPA 1022.7 1019.6 1020.7 1016.9 1010.1 1007.0 1003.0 1008.1 1011.7 1016.4 1021.7 1023.3 1023.3 DAY-HOUR 16- 6 14- 6 11- 6 7- 6 8- 6 8- 3 4- 6 12- 6 20- 6 15- 6 28- 6 23- 6 MIN. QFE PRESSURE IN HPA 1011.0 1006.4 1004.4 1003.5 997.8 993.3 992.8 994.1 1000.4 1005.5 1008.7 1010.6 992.8 DAY-HOUR 1-12 17-12 21-12 21-12 30-15 19-12 26-15 1-15 6-12 6-12 10-12 14-12 MEAN QNH PRESSURE IN HPA 1017.2 1014.0 1012.9 1011.1 1005.4 1000.4 998.6 1002.5 1006.5 1011.2 1015.7 1017.0 1009.4 MAX. QNH PRESSURE IN HPA 1023.4 1020.3 1021.4 1017.6 1010.8 1007.7 1003.7 1008.8 1012.4 1017.1 1022.4 1024.0 1024.0 DAY-HOUR 16- 6 14- 6 11- 6 7- 6 8- 6 8- 3 4- 6 12- 6 20- 6 15- 6 28- 6 23- 6 MIN. QNH PRESSURE IN HPA 1011.7 1007.1 1005.1 1004.2 998.4 993.9 993.4 994.7 1001.0 1006.2 1009.4 1011.3 993.4 DAY-HOUR 1-12 17-12 21-12 21-12 30-15 19-12 26-15 1-15 6-12 6-12 10-12 14-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1016.7 1013.4 1012.4 1010.4 1005.2 1000.2 998.7 1002.4 1006.1 1011.0 1015.5 1016.9 1009.1 MAX. QFE PRESSURE IN HPA 1021.0 1017.6 1018.9 1014.8 1008.6 1007.0 1002.9 1007.2 1011.3 1015.6 1020.8 1022.1 1022.1 DAY 17 24 11 6 8 8 4 13 20 15 28 23 MIN. QFE PRESSURE IN HPA 1013.3 1009.0 1007.3 1005.2 999.0 995.9 995.2 996.2 1002.4 1007.5 1011.1 1011.8 995.2 DAY 2 18 21 21 30 19 16 1 6 24 10 15 MEAN QNH PRESSURE IN HPA 1017.4 1014.1 1013.1 1011.1 1005.9 1000.9 999.4 1003.0 1006.7 1011.6 1016.2 1017.6 1009.7 MAX. QNH PRESSURE IN HPA 1021.7 1018.3 1019.6 1015.5 1009.3 1007.7 1003.6 1007.9 1012.0 1016.3 1021.5 1022.8 1022.8 DAY 17 24 11 6 8 8 4 13 20 15 28 23 MIN. QNH PRESSURE IN HPA 1014.0 1009.7 1008.0 1005.9 999.6 996.5 995.8 996.8 1003.0 1008.2 1011.8 1012.5 995.8 DAY 2 18 21 21 30 19 16 1 6 24 10 15 MEAN QFF PRESSURE IN HPA 1017.7 1014.4 1013.3 1011.3 1006.1 1001.1 999.6 1003.3 1007.0 1011.9 1016.4 1017.9 1010.0 MAX. QFF PRESSURE IN HPA 1021.9 1018.5 1019.8 1015.7 1009.5 1007.9 1003.8 1008.1 1012.2 1016.5 1021.7 1023.1 1023.1 DAY 17 24 11 10 8 8 4 13 20 15 28 23 MIN. QFF PRESSURE IN HPA 1014.2 1009.9 1008.2 1006.1 999.9 996.8 996.1 997.1 1003.3 1008.4 1012.0 1012.7 996.1 DAY 2 18 21 21 30 19 16 1 6 25 10 15 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1965 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1018.5 1015.3 1014.1 1012.0 1006.4 1001.1 999.4 1003.5 1007.6 1012.2 1016.9 1018.3 1010.4 MAX. QFE PRESSURE IN HPA 1022.7 1019.6 1020.7 1016.9 1010.1 1007.0 1003.0 1008.1 1011.7 1016.4 1021.7 1023.3 1023.3 DAY 16 14 11 7 8 9 4 12 20 15 28 23 MIN. QFE PRESSURE IN HPA 1015.1 1010.7 1008.3 1006.2 1000.0 996.1 995.5 997.1 1003.7 1008.6 1012.5 1013.6 995.5 DAY 2 17 21 22 30 19 16 1 6 6 1 15 MEAN QNH PRESSURE IN HPA 1019.2 1015.9 1014.7 1012.7 1007.0 1001.8 1000.0 1004.1 1008.3 1012.8 1017.6 1019.0 1011.1 MAX. QNH PRESSURE IN HPA 1023.4 1020.3 1021.4 1017.6 1010.8 1007.7 1003.7 1008.8 1012.4 1017.1 1022.4 1024.0 1024.0 DAY 16 14 11 7 8 9 4 12 20 15 28 23 MIN. QNH PRESSURE IN HPA 1015.8 1011.4 1009.0 1006.9 1000.6 996.7 996.1 997.7 1004.4 1009.3 1013.2 1014.3 996.1 DAY 2 17 21 22 30 19 16 1 6 6 1 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1016.6 1013.7 1012.7 1011.0 1005.4 1000.3 998.5 1002.3 1006.3 1010.3 1014.9 1016.1 1009.0 MAX. QFE PRESSURE IN HPA 1021.2 1018.5 1019.3 1015.8 1008.8 1006.7 1002.7 1007.7 1010.5 1014.7 1019.4 1021.0 1021.2 DAY 16 14 11 7 15 8 4 12 20 15 28 23 MIN. QFE PRESSURE IN HPA 1012.4 1008.4 1006.6 1005.1 999.2 995.6 994.6 996.1 1002.4 1006.5 1010.8 1011.8 994.6 DAY 1 17 21 22 30 19 26 1 7 6 10 14 MEAN QNH PRESSURE IN HPA 1017.3 1014.4 1013.4 1011.7 1006.1 1001.0 999.1 1003.0 1006.9 1011.0 1015.6 1016.8 1009.7 MAX. QNH PRESSURE IN HPA 1021.9 1019.2 1020.0 1016.5 1009.5 1007.4 1003.4 1008.4 1011.2 1015.4 1020.1 1021.7 1021.9 DAY 16 14 11 7 15 8 4 12 20 15 28 23 MIN. QNH PRESSURE IN HPA 1013.1 1009.1 1007.3 1005.8 999.8 996.2 995.2 996.7 1003.0 1007.2 1011.5 1012.5 995.2 DAY 1 17 21 22 30 19 26 1 7 6 10 14 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1015.2 1011.9 1010.8 1009.2 1003.4 998.6 996.8 1000.5 1004.6 1009.2 1013.3 1014.7 1007.4 MAX. QFE PRESSURE IN HPA 1020.1 1017.3 1016.7 1014.1 1007.0 1004.1 1001.0 1006.0 1008.9 1014.0 1018.0 1018.9 1020.1 DAY 16 14 11 5 8 8 4 12 20 9 17 23 MIN. QFE PRESSURE IN HPA 1011.0 1006.4 1004.4 1003.5 997.9 993.3 993.0 994.3 1000.4 1005.5 1008.7 1010.6 993.0 DAY 1 17 21 21 30 19 26 1 6 6 10 14 MEAN QNH PRESSURE IN HPA 1015.9 1012.5 1011.4 1009.9 1004.1 999.3 997.4 1001.2 1005.3 1009.9 1014.0 1015.3 1008.0 MAX. QNH PRESSURE IN HPA 1020.8 1018.0 1017.4 1014.8 1007.7 1004.8 1001.6 1006.7 1009.6 1014.7 1018.7 1019.6 1020.8 DAY 16 14 11 5 8 8 4 12 20 9 17 23 MIN. QNH PRESSURE IN HPA 1011.7 1007.1 1005.1 1004.2 998.5 993.9 993.6 994.9 1001.0 1006.2 1009.4 1011.3 993.6 DAY 1 17 21 21 30 19 26 1 6 6 10 14 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1965 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1015.5 1012.4 1011.3 1009.6 1003.4 998.5 996.7 1000.6 1004.9 1010.0 1014.6 1015.8 1007.8 MAX. QFE PRESSURE IN HPA 1020.3 1017.2 1017.3 1015.8 1007.2 1004.5 1001.4 1005.7 1009.3 1014.4 1019.2 1018.9 1020.3 DAY 16 14 11 6 8 8 4 12 20 9 17 23 MIN. QFE PRESSURE IN HPA 1011.3 1007.3 1005.2 1004.2 997.8 993.4 992.8 994.1 1000.4 1006.5 1010.5 1011.4 992.8 DAY 1 17 21 21 30 19 26 1 6 6 3 14 MEAN QNH PRESSURE IN HPA 1016.2 1013.1 1012.0 1010.3 1004.1 999.2 997.3 1001.2 1005.5 1010.7 1015.2 1016.4 1008.4 MAX. QNH PRESSURE IN HPA 1021.0 1017.9 1018.0 1016.5 1007.9 1005.2 1002.0 1006.4 1010.0 1015.1 1019.9 1019.6 1021.0 DAY 16 14 11 6 8 8 4 12 20 9 17 23 MIN. QNH PRESSURE IN HPA 1012.0 1008.0 1005.9 1004.9 998.4 994.0 993.4 994.7 1001.0 1007.2 1011.2 1012.1 993.4 DAY 1 17 21 21 30 19 26 1 6 6 3 14 MEAN QFF PRESSURE IN HPA 1016.4 1013.4 1012.3 1010.5 1004.3 999.4 997.6 1001.5 1005.8 1010.9 1015.5 1016.7 1008.7 MAX. QFF PRESSURE IN HPA 1021.2 1018.1 1018.2 1016.7 1008.1 1005.4 1002.3 1006.6 1010.2 1015.3 1020.1 1019.9 1021.2 DAY 16 14 11 6 8 8 4 12 20 9 17 23 MIN. QFF PRESSURE IN HPA 1012.2 1008.2 1006.1 1005.1 998.7 994.3 993.7 995.0 1001.3 1007.4 1011.4 1012.3 993.7 DAY 1 17 21 21 30 19 26 1 6 6 3 14 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1966 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 22.0 22.7 23.8 26.9 30.5 31.7 31.1 29.9 29.3 29.3 25.1 21.8 27.0 MINIMUN AIR TEMPERATURE (C) 16.9 19.0 18.8 22.3 25.3 28.5 28.5 26.9 25.7 24.7 16.6 15.3 22.4 DAYS WITH MINIMUM TEMP. >=21 0 4 5 25 31 30 31 31 30 31 3 0 221 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 14.0 17.0 15.0 19.0 21.0 26.0 27.0 26.0 22.0 21.0 9.0 12.0 9.0 DAY 3 2 5 6 2 3 6 4 7 22 29 1 MAXIMUM AIR TEMPERATURE (C) 25.2 25.6 26.8 29.7 33.4 33.8 32.8 31.8 31.6 32.1 29.9 25.6 29.8 DAYS WITH MAXIMUM TEMP. >=30 1 0 2 13 31 30 31 31 30 31 16 0 216 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 30.0 29.0 31.0 34.0 40.0 36.0 34.0 35.0 34.0 37.0 35.0 29.0 40.0 DAY 24 27 17 27 26 7 1 20 6 20 10 7 DIF. BETWEEN (MAX.-MIN.) (C) 8.3 6.6 8.0 7.4 8.1 5.3 4.3 4.9 5.9 7.4 13.3 10.3 7.4 MEAN DAILY TEMP. (MDT) (C) 21.0 22.3 22.8 26.0 29.3 31.1 30.7 29.4 28.7 28.4 23.2 20.5 26.1 COOLING DEG. DAYS(BASE 21 0C) 11.0 37.5 57.5 149.5 258.5 304.0 299.5 259.5 230.0 229.5 78.5 10.0 1925.0 HEATING DEG. DAYS(BASE 18 0C) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 0.0 0.5 DEWPOINT (MEAN C) 14.2 15.3 15.6 20.3 23.5 26.8 25.9 24.8 23.3 22.8 6.9 11.5 19.2 MIXING RATIO (G/KG) 10.34 11.10 11.48 15.34 18.86 22.87 21.59 20.17 18.32 17.88 7.05 9.03 15.34 VAPOUR PRESSURE (HPA) 16.62 17.76 18.32 24.26 29.54 35.41 33.45 31.41 28.77 28.21 11.36 14.51 24.14 SATURATION DEF. (HPA) 10.02 10.02 11.48 11.45 14.41 11.60 11.92 10.82 12.30 12.86 21.45 11.97 12.52 RELATIVE HUMIDITY (MEAN %) 64 65 62 69 68 76 74 75 71 70 36 56 66 RELATIVE HUMIDITY (MAX. %) 82 79 77 83 82 88 83 85 83 85 57 72 80 RELATIVE HUMIDITY (MIN. %) 52 54 50 56 55 65 66 67 60 57 19 43 54 RELATIVE HUMIDITY (MEAN% 03UTC) 81 76 74 77 73 80 79 81 79 80 40 65 74 RELATIVE HUMIDITY (MEAN% 09UTC) 58 59 54 59 59 70 69 68 64 62 28 48 58 RELATIVE HUMIDITY (MEAN% 15UTC) 67 70 69 80 80 86 83 84 81 78 56 67 75 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 18.0 55.0 0.0 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.0 73.3 DAYS WITH PRECIPITATION >=10 1 2 0 0 0 0 0 0 0 0 0 0 3 DAYS WITH PRECIPITATION >= 5 1 3 0 0 0 0 0 0 0 0 0 0 4 DAYS WITH PRECIPITATION >= 1 1 6 0 0 0 0 0 0 0 0 0 0 7 DAYS WITH PRECIPITATION 1 6 0 1 0 0 1 0 0 0 0 0 9 GREATEST DAILY PRECIPITATION 18.0 28.0 0.0 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.0 28.0 DAY 14 24 ** ** ** ** 24 ** ** ** ** ** DAY WITH THUNDER STORM 0 2 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 0 5 0 1 1 1 1 0 2 2 3 16 WIND DIRECTION (PREVAILING) 180 135 225 225 270 180 135 180 180 180 90 270 180 PREVAILING WIND SPEED(KNOTS) 4.4 5.9 9.3 6.9 4.5 5.1 5.9 5.4 5.7 5.1 4.8 5.0 5.5 PREVAILING WIND PERCENT 16.8 15.7 24.5 28.7 22.6 30.0 43.2 37.4 30.7 27.1 28.7 25.8 23.0 CALMS PERCENT OF WIND 30.3 25.0 21.9 24.0 16.8 8.0 3.2 2.6 4.0 11.6 8.0 3.2 13.2 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 202 219 237 202 213 151 145 147 155 193 158 217 183 VECTOR WIND MAGNITUDE(KNOTS) 1.5 1.4 4.6 3.6 2.8 3.4 4.7 4.1 3.6 2.8 1.6 2.3 2.5 WIND STEADINESES (MEAN %) 45.5 32.6 70.8 70.6 62.2 70.8 87.0 78.8 66.7 60.9 32.7 44.2 51.0 WIND SPEED (MEAN KNOTS) 3.3 4.3 6.5 5.1 4.5 4.8 5.4 5.2 5.4 4.6 4.9 5.2 4.9 FASTEST WIND DIRECTION 260 270 260 180 170 160 120 150 160 150 100 90 260 FASTEST WIND SPEED (KNOTS) 10 15 20 15 12 10 15 12 15 10 14 18 20 DAY 2 12 21 7 1 15 14 25 20 2 5 29 DAYS WITH SKY CLEAR (0-2)/8 24 13 23 19 30 26 21 21 27 26 25 27 282 DAYS WITH P.CLOUDY (3-6)/8 4 5 7 9 1 4 8 10 3 5 4 2 62 DAYS WITH CLOUDY (7-8)/8 3 10 1 2 0 0 2 0 0 0 1 2 21 DAYS WITH VISIBILITY =< 2 KM 0 0 5 0 2 1 0 0 0 1 1 0 10 DURATION OF SUNSHINE HOURS 287.6 210.0 307.8 293.2 333.2 203.3 250.5 269.0 280.3 299.9 294.6 282.9 3312.3 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1966 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1017.7 1014.4 1012.3 1008.7 1005.4 999.0 997.7 1000.2 1006.0 1011.0 1015.8 1016.0 1008.7 MAX. QFE PRESSURE IN HPA 1021.8 1021.1 1018.1 1015.6 1014.3 1008.6 1005.4 1007.3 1013.5 1017.1 1021.8 1021.6 1021.8 DAY-HOUR 15- 6 17- 6 4- 6 1- 6 2- 6 2- 6 8- 6 17- 6 21- 6 31- 6 26- 6 8- 6 MIN. QFE PRESSURE IN HPA 1013.4 1008.2 1003.5 1001.4 997.8 992.1 991.7 993.8 999.0 1000.3 1010.2 1011.7 991.7 DAY-HOUR 10-12 20-12 16-15 23-15 26-15 30-15 31-15 1-15 8-12 1-12 11-15 10-12 MEAN QNH PRESSURE IN HPA 1018.4 1015.1 1012.9 1009.4 1006.0 999.6 998.3 1000.9 1006.7 1011.7 1016.4 1016.7 1009.3 MAX. QNH PRESSURE IN HPA 1022.5 1021.8 1018.8 1016.3 1015.0 1009.3 1006.1 1008.0 1014.2 1017.8 1022.5 1022.3 1022.5 DAY-HOUR 15- 6 17- 6 4- 6 1- 6 2- 6 2- 6 8- 6 17- 6 21- 6 31- 6 26- 6 8- 6 MIN. QNH PRESSURE IN HPA 1014.1 1008.9 1004.2 1002.0 998.4 992.7 992.3 994.4 999.6 1000.9 1010.9 1012.4 992.3 DAY-HOUR 10-12 20-12 16-15 23-15 26-15 30-15 31-15 1-15 8-12 1-12 11-15 10-12 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 1018.0 1014.9 1012.5 1008.7 1005.9 999.7 998.4 1000.8 1006.5 1011.3 1016.2 1016.2 1009.1 MAX. QFE PRESSURE IN HPA 1020.5 1019.2 1016.6 1014.1 1013.7 1007.8 1004.5 1006.1 1012.5 1015.4 1020.3 1020.0 1020.5 DAY 15 17 4 1 2 2 10 17 21 31 26 7 MIN. QFE PRESSURE IN HPA 1015.2 1009.8 1005.4 1001.8 999.5 994.0 994.2 994.6 999.5 1002.0 1012.4 1012.5 994.0 DAY 10 20 21 24 27 15 1 1 8 2 12 28 MEAN QNH PRESSURE IN HPA 1018.7 1015.5 1013.2 1009.3 1006.5 1000.4 999.0 1001.4 1007.1 1012.0 1016.9 1016.9 1009.7 MAX. QNH PRESSURE IN HPA 1021.2 1019.9 1017.3 1014.8 1014.4 1008.5 1005.2 1006.8 1013.2 1016.1 1021.0 1020.7 1021.2 DAY 15 17 4 1 2 2 10 17 21 31 26 7 MIN. QNH PRESSURE IN HPA 1015.9 1010.5 1006.1 1002.4 1000.1 994.6 994.8 995.2 1000.1 1002.6 1013.1 1013.2 994.6 DAY 10 20 21 24 27 15 1 1 8 2 12 28 MEAN QFF PRESSURE IN HPA 1019.0 1015.8 1013.4 1009.6 1006.8 1000.6 999.3 1001.7 1007.4 1012.2 1017.1 1017.2 1010.0 MAX. QFF PRESSURE IN HPA 1021.4 1020.1 1017.5 1015.0 1014.6 1008.7 1005.4 1007.0 1013.4 1016.3 1021.2 1020.9 1021.4 DAY 15 17 4 1 2 2 10 17 21 31 26 7 MIN. QFF PRESSURE IN HPA 1016.1 1010.7 1006.3 1002.7 1000.4 994.9 995.1 995.5 1000.4 1002.9 1013.3 1013.4 994.9 DAY 10 20 21 24 27 15 1 1 8 2 12 28 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1966 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1019.5 1016.1 1014.0 1010.4 1006.8 1000.3 999.1 1001.7 1007.7 1012.5 1017.8 1017.8 1010.3 MAX. QFE PRESSURE IN HPA 1021.8 1021.1 1018.1 1015.6 1014.3 1008.6 1005.4 1007.3 1013.5 1017.1 1021.8 1021.6 1021.8 DAY 15 17 4 1 2 2 8 17 21 31 26 8 MIN. QFE PRESSURE IN HPA 1016.6 1011.6 1008.1 1004.4 1000.6 995.0 994.8 995.2 1000.8 1001.2 1013.9 1014.8 994.8 DAY 10 21 20 24 27 30 31 1 8 4 12 10 MEAN QNH PRESSURE IN HPA 1020.2 1016.8 1014.6 1011.1 1007.5 1000.9 999.7 1002.3 1008.3 1013.2 1018.5 1018.5 1011.0 MAX. QNH PRESSURE IN HPA 1022.5 1021.8 1018.8 1016.3 1015.0 1009.3 1006.1 1008.0 1014.2 1017.8 1022.5 1022.3 1022.5 DAY 15 17 4 1 2 2 8 17 21 31 26 8 MIN. QNH PRESSURE IN HPA 1017.3 1012.3 1008.8 1005.1 1001.2 995.6 995.4 995.8 1001.4 1001.8 1014.6 1015.5 995.4 DAY 10 21 20 24 27 30 31 1 8 4 12 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1017.7 1014.4 1012.8 1009.5 1006.1 999.6 998.3 1000.8 1006.8 1011.6 1016.1 1016.4 1009.2 MAX. QFE PRESSURE IN HPA 1021.0 1019.6 1016.9 1014.4 1013.4 1008.3 1004.3 1006.5 1011.9 1015.6 1020.7 1020.3 1021.0 DAY 14 17 10 1 2 2 10 17 15 31 26 31 MIN. QFE PRESSURE IN HPA 1015.0 1010.1 1006.3 1003.7 1000.4 994.4 993.8 994.7 1000.2 1002.8 1012.3 1012.9 993.8 DAY 8 21 20 23 26 30 31 1 8 1 12 27 MEAN QNH PRESSURE IN HPA 1018.4 1015.1 1013.5 1010.1 1006.7 1000.3 999.0 1001.5 1007.4 1012.2 1016.7 1017.0 1009.8 MAX. QNH PRESSURE IN HPA 1021.7 1020.3 1017.6 1015.1 1014.1 1009.0 1005.0 1007.2 1012.6 1016.3 1021.4 1021.0 1021.7 DAY 14 17 10 1 2 2 10 17 15 31 26 31 MIN. QNH PRESSURE IN HPA 1015.7 1010.8 1007.0 1004.4 1001.0 995.0 994.4 995.3 1000.8 1003.4 1013.0 1013.6 994.4 DAY 8 21 20 23 26 30 31 1 8 1 12 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1016.1 1013.0 1011.0 1007.6 1004.4 997.9 996.6 999.1 1004.7 1009.7 1014.2 1014.6 1007.4 MAX. QFE PRESSURE IN HPA 1019.3 1018.1 1015.4 1012.8 1011.4 1006.8 1002.7 1004.6 1010.1 1013.8 1018.6 1018.6 1019.3 DAY 14 17 10 1 14 2 8 17 15 22 26 7 MIN. QFE PRESSURE IN HPA 1013.4 1008.2 1004.1 1002.0 999.1 992.5 992.5 994.1 999.0 1000.3 1010.7 1011.7 992.5 DAY 10 20 20 24 26 30 31 1 8 1 11 10 MEAN QNH PRESSURE IN HPA 1016.7 1013.7 1011.6 1008.3 1005.1 998.6 997.2 999.7 1005.3 1010.3 1014.9 1015.3 1008.1 MAX. QNH PRESSURE IN HPA 1020.0 1018.8 1016.1 1013.5 1012.1 1007.5 1003.4 1005.3 1010.8 1014.5 1019.3 1019.3 1020.0 DAY 14 17 10 1 14 2 8 17 15 22 26 7 MIN. QNH PRESSURE IN HPA 1014.1 1008.9 1004.8 1002.6 999.7 993.1 993.1 994.7 999.6 1000.9 1011.4 1012.4 993.1 DAY 10 20 20 24 26 30 31 1 8 1 11 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1966 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1017.2 1013.8 1011.1 1007.5 1003.8 997.5 996.2 998.8 1004.6 1010.0 1014.6 1015.1 1007.5 MAX. QFE PRESSURE IN HPA 1020.2 1018.9 1015.1 1012.3 1011.0 1006.3 1002.2 1004.3 1010.2 1014.4 1018.6 1019.0 1020.2 DAY 14 17 5 1 14 2 8 17 20 22 25 2 MIN. QFE PRESSURE IN HPA 1014.1 1008.9 1003.5 1001.4 997.8 992.1 991.7 993.8 999.3 1000.6 1010.2 1011.8 991.7 DAY 10 20 16 23 26 30 31 1 8 1 11 27 MEAN QNH PRESSURE IN HPA 1017.9 1014.5 1011.7 1008.2 1004.5 998.2 996.8 999.5 1005.2 1010.6 1015.3 1015.7 1008.2 MAX. QNH PRESSURE IN HPA 1020.9 1019.6 1015.8 1013.0 1011.7 1007.0 1002.8 1005.0 1010.9 1015.1 1019.3 1019.7 1020.9 DAY 14 17 5 1 14 2 8 17 20 22 25 2 MIN. QNH PRESSURE IN HPA 1014.8 1009.6 1004.2 1002.0 998.4 992.7 992.3 994.4 999.9 1001.2 1010.9 1012.5 992.3 DAY 10 20 16 23 26 30 31 1 8 1 11 27 MEAN QFF PRESSURE IN HPA 1018.2 1014.7 1012.0 1008.4 1004.7 998.4 997.1 999.7 1005.5 1010.9 1015.6 1016.0 1008.4 MAX. QFF PRESSURE IN HPA 1021.1 1019.8 1016.0 1013.2 1011.9 1007.2 1003.1 1005.2 1011.1 1015.3 1019.5 1019.9 1021.1 DAY 14 17 5 1 14 2 8 17 20 22 26 2 MIN. QFF PRESSURE IN HPA 1015.0 1009.8 1004.4 1002.3 998.7 993.0 992.6 994.7 1000.2 1001.5 1011.1 1012.7 992.6 DAY 10 20 16 23 26 30 31 1 8 1 11 27 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 CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1967 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 20.4 22.7 24.5 26.4 30.5 31.7 32.1 30.6 28.8 28.4 26.0 21.5 27.0 MINIMUN AIR TEMPERATURE (C) 14.5 18.8 20.6 22.3 25.8 27.6 29.5 27.9 26.3 23.1 21.9 16.3 22.9 DAYS WITH MINIMUM TEMP. >=21 0 9 14 21 31 30 31 31 30 24 24 0 245 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 9.0 14.0 17.0 16.0 22.0 24.0 24.0 26.0 24.0 18.0 19.0 9.0 9.0 DAY 9 10 1 5 5 6 21 20 30 26 11 27 MAXIMUM AIR TEMPERATURE (C) 24.5 26.1 27.5 29.5 33.9 33.9 34.0 32.5 30.7 31.5 28.9 25.4 29.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 2 20 31 30 31 31 29 26 6 0 206 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 27.0 29.0 30.0 34.0 42.0 38.0 36.0 35.0 32.0 37.0 31.0 28.0 42.0 DAY 27 26 4 15 10 9 1 2 2 10 26 7 DIF. BETWEEN (MAX.-MIN.) (C) 10.0 7.3 6.9 7.2 8.1 6.3 4.5 4.6 4.4 8.4 7.0 9.1 7.0 MEAN DAILY TEMP. (MDT) (C) 19.5 22.4 24.1 25.9 29.9 30.8 31.7 30.2 28.5 27.3 25.4 20.8 26.4 COOLING DEG. DAYS(BASE 21 0C) 3.5 47.5 95.0 147.0 275.0 293.0 332.0 285.5 224.0 194.0 131.5 24.0 2052.0 HEATING DEG. DAYS(BASE 18 0C) 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8.0 10.0 DEWPOINT (MEAN C) 10.0 16.2 18.0 20.2 24.4 27.0 27.7 27.2 25.0 22.8 20.3 10.7 20.8 MIXING RATIO (G/KG) 8.21 11.89 13.38 15.26 19.84 23.08 24.16 23.38 20.27 18.29 15.08 8.87 16.81 VAPOUR PRESSURE (HPA) 13.24 19.00 21.24 24.14 31.03 35.74 37.22 36.16 31.70 28.83 23.99 14.25 26.38 SATURATION DEF. (HPA) 11.19 8.79 9.73 10.69 12.96 11.11 10.77 8.00 8.05 10.41 9.93 11.87 10.29 RELATIVE HUMIDITY (MEAN %) 55 69 69 70 72 77 78 82 80 74 71 54 71 RELATIVE HUMIDITY (MAX. %) 72 81 81 83 85 87 86 90 88 86 82 67 82 RELATIVE HUMIDITY (MIN. %) 43 57 58 58 59 70 72 76 73 62 63 43 61 RELATIVE HUMIDITY (MEAN% 03UTC) 66 80 79 81 81 86 85 90 88 84 81 61 80 RELATIVE HUMIDITY (MEAN% 09UTC) 46 62 62 62 64 71 74 78 75 66 67 47 65 RELATIVE HUMIDITY (MEAN% 15UTC) 62 74 73 71 78 79 79 85 83 79 72 59 75 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 0.0 0.0 6.3 0.1 0.0 0.0 21.0 0.0 0.0 0.0 0.0 6.0 33.4 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 0 0 1 0 0 0 2 0 0 0 0 0 3 DAYS WITH PRECIPITATION >= 1 0 0 1 0 0 0 3 0 0 0 0 2 6 DAYS WITH PRECIPITATION 0 2 5 4 0 0 3 1 0 0 0 2 17 GREATEST DAILY PRECIPITATION 0.0 0.0 6.0 0.1 0.0 0.0 10.0 0.0 0.0 0.0 0.0 4.0 10.0 DAY ** ** 30 30 ** ** 21 ** ** ** ** 9 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 7 5 6 1 2 1 1 1 0 1 1 2 28 WIND DIRECTION (PREVAILING) 180 270 270 270 180 180 135 135 135 225 270 270 180 PREVAILING WIND SPEED(KNOTS) 6.6 12.5 13.9 9.2 5.8 7.5 11.2 9.7 7.2 8.3 11.5 9.9 6.6 PREVAILING WIND PERCENT 26.5 27.1 25.8 25.3 23.2 29.3 36.8 45.8 37.3 19.4 34.7 27.7 19.7 CALMS PERCENT OF WIND 7.7 6.4 6.5 10.7 4.5 6.7 11.6 13.5 22.7 23.2 16.7 13.5 12.0 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 185 226 237 235 185 182 147 136 147 198 254 282 196 VECTOR WIND MAGNITUDE(KNOTS) 2.6 3.7 5.8 4.9 3.5 4.9 6.3 6.4 4.6 2.6 6.3 1.8 3.2 WIND STEADINESES (MEAN %) 41.3 38.5 64.4 70.0 47.3 67.1 80.8 90.1 92.0 51.0 75.9 24.7 43.8 WIND SPEED (MEAN KNOTS) 6.3 9.6 9.0 7.0 7.4 7.3 7.8 7.1 5.0 5.1 8.3 7.3 7.3 FASTEST WIND DIRECTION 250 260 240 250 260 150 130 120 120 260 250 250 240 FASTEST WIND SPEED (KNOTS) 27 27 30 20 24 22 28 22 17 18 25 20 30 DAY 26 7 24 1 9 29 21 18 7 28 28 6 DAYS WITH SKY CLEAR (0-2)/8 20 15 14 15 29 27 20 20 10 30 23 21 244 DAYS WITH P.CLOUDY (3-6)/8 11 12 13 9 2 1 9 8 20 1 5 8 99 DAYS WITH CLOUDY (7-8)/8 0 1 4 6 0 2 2 3 0 0 2 2 22 DAYS WITH VISIBILITY =< 2 KM 0 1 2 1 0 0 1 1 0 0 0 0 6 DURATION OF SUNSHINE HOURS 292.2 241.2 236.2 270.4 327.6 284.5 240.4 250.9 230.5 307.4 277.8 272.4 3231.5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1967 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1018.9 1014.1 1010.1 1009.7 1005.1 999.6 995.9 998.4 1005.0 1011.8 1013.8 1016.0 1008.2 MAX. QFE PRESSURE IN HPA 1024.1 1018.3 1019.3 1017.4 1012.8 1006.3 1003.6 1005.7 1010.2 1019.7 1018.3 1023.0 1024.1 DAY-HOUR 7- 6 22- 6 3- 6 4- 6 1- 6 1- 6 22- 6 29- 6 29- 6 27- 6 12- 6 16- 6 MIN. QFE PRESSURE IN HPA 1011.7 1010.2 997.1 1002.8 997.3 991.8 989.8 993.5 1000.0 1005.9 1007.7 1006.6 989.8 DAY-HOUR 26-15 27-12 24-15 26-15 16-15 30-15 26-15 17-15 11-12 1-12 26-15 25-15 MEAN QNH PRESSURE IN HPA 1019.5 1014.7 1010.7 1010.3 1005.8 1000.2 996.6 999.0 1005.6 1012.5 1014.4 1016.6 1008.8 MAX. QNH PRESSURE IN HPA 1024.8 1019.0 1020.0 1018.1 1013.5 1007.0 1004.3 1006.4 1010.9 1020.4 1019.0 1023.7 1024.8 DAY-HOUR 7- 6 22- 6 3- 6 4- 6 1- 6 1- 6 22- 6 29- 6 29- 6 27- 6 12- 6 16- 6 MIN. QNH PRESSURE IN HPA 1012.4 1010.9 997.7 1003.4 997.9 992.4 990.4 994.1 1000.6 1006.6 1008.4 1007.3 990.4 DAY-HOUR 26-15 27-12 24-15 26-15 16-15 30-15 26-15 17-15 11-12 1-12 26-15 25-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1018.8 1014.0 1010.1 1009.7 1005.4 1000.2 996.6 999.0 1005.2 1012.0 1014.2 1016.4 1008.5 MAX. QFE PRESSURE IN HPA 1022.0 1015.9 1017.3 1015.4 1011.3 1005.9 1002.6 1004.6 1008.3 1018.2 1016.8 1022.1 1022.1 DAY 7 22 3 5 1 1 22 31 29 27 12 16 MIN. QFE PRESSURE IN HPA 1013.1 1011.2 1000.7 1004.0 998.7 995.7 991.9 994.6 1002.2 1006.8 1010.8 1009.5 991.9 DAY 26 13 24 26 16 28 10 1 7 4 27 25 MEAN QNH PRESSURE IN HPA 1019.5 1014.7 1010.7 1010.3 1006.0 1000.9 997.2 999.6 1005.9 1012.7 1014.8 1017.1 1009.1 MAX. QNH PRESSURE IN HPA 1022.7 1016.6 1018.0 1016.1 1012.0 1006.6 1003.2 1005.3 1009.0 1018.9 1017.5 1022.8 1022.8 DAY 7 22 3 5 1 1 22 31 29 27 12 16 MIN. QNH PRESSURE IN HPA 1013.8 1011.9 1001.3 1004.7 999.3 996.3 992.5 995.2 1002.8 1007.5 1011.5 1010.2 992.5 DAY 26 13 24 26 16 28 10 1 7 4 27 25 MEAN QFF PRESSURE IN HPA 1019.8 1014.9 1011.0 1010.6 1006.3 1001.1 997.4 999.8 1006.1 1012.9 1015.1 1017.3 1009.4 MAX. QFF PRESSURE IN HPA 1023.0 1016.8 1018.2 1016.3 1012.2 1006.8 1003.5 1005.5 1009.2 1019.1 1017.7 1023.0 1023.0 DAY 7 22 3 5 1 1 22 31 29 27 12 16 MIN. QFF PRESSURE IN HPA 1014.0 1012.1 1001.6 1004.9 999.6 996.6 992.8 995.5 1003.1 1007.7 1011.7 1010.4 992.8 DAY 26 13 24 26 16 28 10 1 7 4 27 25 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1967 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1020.8 1015.9 1011.9 1011.2 1006.5 1000.8 997.1 999.6 1006.5 1013.5 1015.6 1017.8 1009.8 MAX. QFE PRESSURE IN HPA 1024.1 1018.3 1019.3 1017.4 1012.8 1006.3 1003.6 1005.7 1010.2 1019.7 1018.3 1023.0 1024.1 DAY 7 22 3 4 1 1 22 29 29 27 12 16 MIN. QFE PRESSURE IN HPA 1015.1 1013.0 1001.7 1005.9 999.6 996.1 992.1 995.1 1002.9 1008.4 1012.2 1009.8 992.1 DAY 26 13 24 24 16 29 10 1 11 4 27 25 MEAN QNH PRESSURE IN HPA 1021.5 1016.5 1012.6 1011.8 1007.2 1001.5 997.8 1000.3 1007.1 1014.1 1016.3 1018.4 1010.4 MAX. QNH PRESSURE IN HPA 1024.8 1019.0 1020.0 1018.1 1013.5 1007.0 1004.3 1006.4 1010.9 1020.4 1019.0 1023.7 1024.8 DAY 7 22 3 4 1 1 22 29 29 27 12 16 MIN. QNH PRESSURE IN HPA 1015.8 1013.7 1002.3 1006.6 1000.2 996.7 992.7 995.7 1003.6 1009.1 1012.9 1010.5 992.7 DAY 26 13 24 24 16 29 10 1 11 4 27 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1019.3 1014.8 1010.9 1010.5 1005.6 1000.1 996.3 998.8 1005.6 1012.3 1014.2 1016.4 1008.7 MAX. QFE PRESSURE IN HPA 1022.3 1017.1 1017.8 1017.0 1011.7 1005.4 1003.0 1004.4 1009.7 1018.4 1017.3 1021.6 1022.3 DAY 7 22 3 4 1 1 22 29 29 27 12 16 MIN. QFE PRESSURE IN HPA 1014.6 1011.6 1000.2 1004.7 999.0 995.1 991.1 994.8 1001.7 1007.3 1010.7 1008.0 991.1 DAY 26 13 24 26 16 30 10 1 11 4 26 25 MEAN QNH PRESSURE IN HPA 1019.9 1015.5 1011.5 1011.2 1006.3 1000.7 996.9 999.4 1006.2 1013.0 1014.8 1017.1 1009.4 MAX. QNH PRESSURE IN HPA 1023.0 1017.8 1018.5 1017.7 1012.4 1006.1 1003.7 1005.1 1010.4 1019.1 1018.0 1022.3 1023.0 DAY 7 22 3 4 1 1 22 29 29 27 12 16 MIN. QNH PRESSURE IN HPA 1015.3 1012.3 1000.8 1005.4 999.6 995.7 991.7 995.4 1002.3 1008.0 1011.4 1008.7 991.7 DAY 26 13 24 26 16 30 10 1 11 4 26 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1017.4 1012.6 1008.6 1008.5 1004.2 998.6 995.0 997.3 1003.9 1010.6 1012.3 1014.6 1007.0 MAX. QFE PRESSURE IN HPA 1020.5 1014.4 1015.5 1015.3 1009.7 1003.5 1001.7 1002.7 1006.9 1016.4 1015.5 1019.5 1020.5 DAY 12 21 2 4 1 1 22 29 29 30 12 15 MIN. QFE PRESSURE IN HPA 1011.9 1010.2 997.3 1003.4 997.7 992.9 990.3 993.9 1000.0 1005.9 1008.2 1006.8 990.3 DAY 26 27 24 26 16 30 10 18 11 1 26 25 MEAN QNH PRESSURE IN HPA 1018.0 1013.3 1009.3 1009.2 1004.8 999.3 995.6 998.0 1004.5 1011.3 1013.0 1015.2 1007.6 MAX. QNH PRESSURE IN HPA 1021.2 1015.1 1016.2 1016.0 1010.4 1004.2 1002.3 1003.4 1007.6 1017.1 1016.2 1020.2 1021.2 DAY 12 21 2 4 1 1 22 29 29 30 12 15 MIN. QNH PRESSURE IN HPA 1012.6 1010.9 997.9 1004.1 998.3 993.5 990.9 994.5 1000.6 1006.6 1008.9 1007.5 990.9 DAY 26 27 24 26 16 30 10 18 11 1 26 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1967 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1018.1 1013.0 1008.8 1008.4 1003.9 998.1 994.7 997.2 1003.9 1010.8 1012.6 1014.9 1007.0 MAX. QFE PRESSURE IN HPA 1021.6 1015.9 1015.9 1015.1 1010.1 1003.0 1001.3 1002.7 1007.3 1016.8 1015.3 1020.1 1021.6 DAY 12 4 2 4 1 1 22 29 28 30 12 15 MIN. QFE PRESSURE IN HPA 1011.7 1010.6 997.1 1002.8 997.3 991.8 989.8 993.5 1000.0 1006.5 1007.7 1006.6 989.8 DAY 26 27 24 26 16 30 26 17 11 3 26 25 MEAN QNH PRESSURE IN HPA 1018.7 1013.7 1009.5 1009.1 1004.6 998.8 995.3 997.9 1004.5 1011.5 1013.3 1015.5 1007.7 MAX. QNH PRESSURE IN HPA 1022.3 1016.6 1016.6 1015.8 1010.8 1003.7 1001.9 1003.4 1008.0 1017.5 1016.0 1020.8 1022.3 DAY 12 4 2 4 1 1 22 29 28 30 12 15 MIN. QNH PRESSURE IN HPA 1012.4 1011.3 997.7 1003.4 997.9 992.4 990.4 994.1 1000.6 1007.2 1008.4 1007.3 990.4 DAY 26 27 24 26 16 30 26 17 11 3 26 25 MEAN QFF PRESSURE IN HPA 1019.0 1014.0 1009.8 1009.3 1004.8 999.0 995.5 998.1 1004.8 1011.7 1013.5 1015.8 1007.9 MAX. QFF PRESSURE IN HPA 1022.6 1016.8 1016.8 1016.0 1011.0 1003.9 1002.2 1003.6 1008.2 1017.7 1016.2 1021.0 1022.6 DAY 12 4 2 4 1 1 22 29 28 30 12 15 MIN. QFF PRESSURE IN HPA 1012.6 1011.5 998.0 1003.7 998.2 992.7 990.7 994.4 1000.9 1007.4 1008.6 1007.5 990.7 DAY 26 27 24 26 16 30 26 17 11 3 26 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 CHAHBAHAR (40898) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 17 N LONGITUDE 60 37 E DATA PROCESSING CENTER ELEVATION 8.0 M MEANS AND EXTREMES FOR THE YEAR 1968 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 21.2 20.0 23.9 26.9 29.9 31.4 31.8 30.7 27.6 27.5 24.9 22.7 26.6 MINIMUN AIR TEMPERATURE (C) 16.4 16.1 19.7 22.5 25.1 27.9 27.8 26.7 24.7 23.7 20.7 18.9 22.5 DAYS WITH MINIMUM TEMP. >=21 1 0 14 27 31 30 31 31 30 30 18 8 251 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 9.0 9.0 16.0 19.0 21.0 25.0 24.0 25.0 23.0 20.0 16.0 13.0 9.0 DAY 21 7 3 9 6 8 31 3 21 19 28 24 MAXIMUM AIR TEMPERATURE (C) 24.7 22.9 27.0 30.6 33.1 33.7 34.1 33.6 30.8 31.5 29.3 26.7 29.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 21 31 30 31 31 30 30 11 1 216 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 29.0 26.0 29.0 38.0 39.0 37.0 38.0 37.0 32.0 34.0 33.0 30.0 39.0 DAY 9 28 14 1 25 12 16 11 25 5 24 22 DIF. BETWEEN (MAX.-MIN.) (C) 8.3 6.8 7.3 8.1 8.0 5.8 6.3 6.9 6.1 7.8 8.6 7.8 7.3 MEAN DAILY TEMP. (MDT) (C) 20.5 19.5 23.4 26.5 29.1 30.8 30.9 30.2 27.7 27.6 25.0 22.8 26.2 COOLING DEG. DAYS(BASE 21 0C) 12.5 4.5 75.0 166.5 250.0 294.0 307.5 284.5 202.5 205.0 120.5 62.5 1985.0 HEATING DEG. DAYS(BASE 18 0C) 4.0 13.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17.0 DEWPOINT (MEAN C) 12.2 11.0 16.1 20.1 22.5 26.8 26.3 26.3 23.5 22.7 20.2 14.9 20.2 MIXING RATIO (G/KG) 9.33 8.76 11.93 15.18 17.88 22.87 22.20 22.09 18.52 17.67 15.10 11.12 16.05 VAPOUR PRESSURE (HPA) 14.98 14.09 19.00 24.03 28.06 35.44 34.35 34.27 29.09 27.92 24.06 17.83 25.26 SATURATION DEF. (HPA) 10.56 9.64 11.04 12.00 14.44 10.69 12.94 10.23 8.01 9.08 7.72 10.14 10.54 RELATIVE HUMIDITY (MEAN %) 59 60 64 68 67 77 73 78 79 77 77 64 70 RELATIVE HUMIDITY (MAX. %) 71 70 77 80 79 87 83 88 88 90 90 77 82 RELATIVE HUMIDITY (MIN. %) 47 50 52 56 54 70 65 67 67 60 61 49 58 RELATIVE HUMIDITY (MEAN% 03UTC) 67 67 72 75 71 86 82 86 84 84 85 74 78 RELATIVE HUMIDITY (MEAN% 09UTC) 52 54 57 61 61 73 66 68 69 62 64 53 62 RELATIVE HUMIDITY (MEAN% 15UTC) 65 64 68 73 73 78 79 78 81 77 73 61 73 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 6.0 53.0 0.3 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.9 60.3 DAYS WITH PRECIPITATION >=10 0 2 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 0 4 0 0 0 0 0 0 0 0 0 0 4 DAYS WITH PRECIPITATION >= 1 3 4 0 0 0 0 0 0 0 0 0 0 7 DAYS WITH PRECIPITATION 3 4 1 1 0 0 0 0 0 0 0 4 13 GREATEST DAILY PRECIPITATION 3.0 26.0 0.3 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 26.0 DAY 31 25 13 29 **