STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) ***** ***** 16.8 25.9 31.6 31.3 31.3 29.9 26.7 24.1 16.2 9.5 ***** MINIMUN AIR TEMPERATURE (C) ***** ***** 9.0 15.1 19.9 23.7 23.2 22.0 16.5 14.6 7.9 2.4 ***** DAYS WITH MINIMUM TEMP. >=21 **** **** 0 0 12 24 28 23 1 1 0 0 **** DAYS WITH MINIMUM TEMP. <=-4 **** **** 0 0 0 0 0 0 0 0 0 6 **** DAYS WITH FREEZING MIN.<= 0 **** **** 0 0 0 0 0 0 0 0 0 11 **** TEMPERATURE RECORDS LOWEST(C) ***** ***** 2.0 11.0 14.0 16.5 18.4 17.6 12.6 10.4 0.4 -7.0 ***** DAY ** ** 19 1 2 7 25 22 18 19 18 14 MAXIMUM AIR TEMPERATURE (C) ***** ***** 22.3 31.2 36.3 38.6 38.4 36.8 34.0 31.7 24.0 16.8 ***** DAYS WITH MAXIMUM TEMP. >=30 **** **** 1 20 31 30 31 31 30 17 0 0 **** DAYS WITH MAXIMUM TEMP. <= 0 **** **** 0 0 0 0 0 0 0 0 0 0 **** TEMPERATURE RECORDS HIGHEST(C)***** ***** 30.0 34.8 40.0 43.6 40.8 40.4 36.0 36.4 29.6 24.2 ***** DAY ** ** 26 21 17 29 11 1 30 7 10 5 DIF. BETWEEN (MAX.-MIN.) (C) ***** ***** 13.3 16.1 16.4 14.9 15.2 14.8 17.5 17.1 16.1 14.4 ***** MEAN DAILY TEMP. (MDT) (C) ***** ***** 15.7 23.2 28.1 31.1 30.8 29.4 25.2 23.1 15.9 9.6 ***** COOLING DEG. DAYS(BASE 21 0C)****** ****** 1.5 38.7 211.5 304.3 303.1 260.1 127.4 75.3 0.0 0.0 ****** HEATING DEG. DAYS(BASE 18 0C)****** ****** 72.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 74.6 259.7 ****** DEWPOINT (MEAN C) ***** ***** -0.0 0.2 -1.5 10.1 7.2 3.9 -4.8 -2.0 -3.1 -4.3 ***** MIXING RATIO (G/KG) ****** ****** 4.70 4.77 4.48 9.70 8.41 6.84 3.19 3.93 3.76 3.74 ****** VAPOUR PRESSURE (HPA) ****** ****** 6.60 6.69 6.28 13.39 11.63 9.49 4.50 5.56 5.32 5.30 ****** SATURATION DEF. (HPA) ****** ****** 13.47 27.86 41.68 34.39 35.50 34.08 32.19 26.29 14.48 7.60 ****** RELATIVE HUMIDITY (MEAN %) *** *** 36 21 14 33 28 25 14 20 31 43 *** RELATIVE HUMIDITY (MAX. %) *** *** 60 39 24 59 49 45 23 33 48 66 *** RELATIVE HUMIDITY (MIN. %) *** *** 22 12 8 13 12 9 7 11 17 23 *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** 56 35 24 48 39 37 20 29 46 61 *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** 27 16 10 15 15 13 9 13 21 27 *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** 35 21 12 25 20 19 10 15 25 37 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. ****** ****** 50.2 1.4 0.0 36.0 7.0 0.2 0.0 0.0 3.0 1.3 ****** DAYS WITH PRECIPITATION >=10 **** **** 1 0 0 2 0 0 0 0 0 0 **** DAYS WITH PRECIPITATION >= 5 **** **** 3 0 0 3 1 0 0 0 0 0 **** DAYS WITH PRECIPITATION >= 1 **** **** 3 0 0 4 1 0 0 0 1 1 **** DAYS WITH PRECIPITATION **** **** 4 8 2 5 1 1 0 0 1 1 **** GREATEST DAILY PRECIPITATION ****** ****** 39.0 0.4 0.0 17.0 7.0 0.2 0.0 0.0 3.0 1.3 ****** DAY ** ** 9 11 ** 5 20 11 ** ** 25 8 DAY WITH THUNDER STORM **** **** 3 4 1 6 1 1 0 1 1 0 **** DAYS WITH SNOW OR SLEET **** **** 0 0 0 0 0 0 0 0 0 0 **** DAYS WITH DUST **** **** 16 9 8 6 5 9 1 1 1 2 **** WIND DIRECTION (PREVAILING) *** *** 45 45 45 45 45 45 45 45 45 45 *** PREVAILING WIND SPEED(KNOTS) **** **** 18.8 14.4 20.2 14.6 15.0 15.6 13.6 14.7 12.6 12.6 **** PREVAILING WIND PERCENT ***** ***** 44.0 21.3 32.9 22.2 18.1 35.5 28.3 25.0 17.9 27.8 ***** CALMS PERCENT OF WIND ***** ***** 11.2 17.3 14.2 27.2 29.4 29.8 32.5 36.7 49.6 33.5 ***** NO. OF WIND OBSERVATION **** **** 125 150 155 239 248 248 240 248 240 248 2141 VECTOR WIND DIRECTION (MEAN) *** *** 37 351 16 54 54 46 34 37 29 37 *** VECTOR WIND MAGNITUDE(KNOTS) **** **** 4.5 3.1 7.1 2.4 2.6 6.4 5.6 4.9 2.0 2.7 **** WIND STEADINESES (MEAN %) ***** ***** 33.3 32.6 56.8 31.2 34.2 71.1 75.7 69.0 41.7 40.9 ***** WIND SPEED (MEAN KNOTS) **** **** 13.5 9.5 12.5 7.7 7.6 9.0 7.4 7.1 4.8 6.6 **** FASTEST WIND DIRECTION *** *** 40 270 50 360 40 30 20 20 290 240 *** FASTEST WIND SPEED (KNOTS) *** *** 43 33 39 39 33 33 29 35 29 29 *** DAY ** ** 28 10 18 6 28 8 29 15 14 20 DAYS WITH SKY CLEAR (0-2)/8 **** **** 13 12 27 19 23 25 30 29 24 22 **** DAYS WITH P.CLOUDY (3-6)/8 **** **** 12 14 4 10 8 6 0 2 4 9 **** DAYS WITH CLOUDY (7-8)/8 **** **** 0 4 0 1 0 0 0 0 2 0 **** DAYS WITH VISIBILITY =< 2 KM **** **** 6 2 4 2 1 1 0 0 0 0 **** DURATION OF SUNSHINE HOURS ****** ****** 194.3 250.1 335.6 281.0 281.8 306.1 320.2 306.2 263.1 251.3 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA ****** ****** 881.7 881.1 880.0 873.9 874.4 875.9 881.0 885.2 885.8 886.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** 888.7 886.9 885.4 882.6 878.7 880.9 886.5 892.2 892.0 891.7 ****** DAY-HOUR **-** **-** 28- 6 4- 6 20- 6 2- 3 3- 3 29- 6 23- 6 20- 6 29- 6 22- 6 MIN. QFE PRESSURE IN HPA ****** ****** 876.1 874.8 874.8 867.6 868.6 870.1 875.5 880.1 879.5 881.2 ****** DAY-HOUR **-** **-** 12-12 24-12 11-12 20-12 18-12 4-12 4-12 1-12 7-12 10-12 MEAN QNH PRESSURE IN HPA ****** ****** 1017.5 1016.8 1015.6 1008.8 1009.3 1010.9 1016.7 1021.4 1022.1 1023.3 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1025.3 1023.3 1021.6 1018.5 1014.1 1016.6 1022.9 1029.3 1029.0 1028.7 ****** DAY-HOUR **-** **-** 28- 6 4- 6 20- 6 2- 3 3- 3 29- 6 23- 6 20- 6 29- 6 22- 6 MIN. QNH PRESSURE IN HPA ****** ****** 1011.2 1009.7 1009.7 1001.6 1002.8 1004.4 1010.5 1015.7 1015.0 1016.9 ****** DAY-HOUR **-** **-** 12-12 24-12 11-12 20-12 18-12 4-12 4-12 1-12 7-12 10-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 996.6 997.4 999.7 1007.3 1013.1 1017.6 1022.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1009.0 1002.6 1007.5 1014.6 1023.0 1026.5 1029.4 ****** DAY-HOUR **-** **-** **-** **-** **-** 5- 6 24- 3 29- 3 23- 3 20- 3 17- 3 18- 3 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 988.6 989.9 991.3 1000.7 1006.3 1009.3 1013.7 ****** DAY-HOUR **-** **-** **-** **-** **-** 20-12 18-12 5-12 4-12 1-12 7-12 5- 9 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 873.8 874.4 875.8 880.9 884.9 885.6 886.5 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 880.6 876.8 879.5 884.5 889.9 889.3 889.3 ****** DAY ** ** ** ** ** 2 3 30 23 20 29 24 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 868.8 870.9 872.1 877.8 880.7 881.2 883.0 ****** DAY ** ** ** ** ** 21 19 5 5 1 7 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1008.6 1009.3 1010.9 1016.6 1021.0 1021.8 1022.9 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1016.2 1012.0 1015.0 1020.6 1026.7 1026.0 1026.0 ****** DAY ** ** ** ** ** 2 3 30 23 20 29 24 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1003.0 1005.3 1006.7 1013.1 1016.4 1016.9 1018.9 ****** DAY ** ** ** ** ** 21 19 5 5 1 7 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 996.5 997.3 999.5 1007.3 1012.9 1017.2 1021.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1006.5 1000.8 1005.2 1012.2 1020.5 1024.6 1026.5 ****** DAY ** ** ** ** ** 5 25 30 23 20 17 18 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 989.0 992.3 993.6 1003.3 1006.8 1010.9 1015.1 ****** DAY ** ** ** ** ** 21 19 5 9 1 8 6 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 882.6 881.9 881.2 875.0 875.5 876.9 882.1 886.1 886.6 887.5 ****** MAX. QFE PRESSURE IN HPA ****** ****** 888.0 886.1 884.1 882.6 878.7 880.8 885.6 891.0 890.7 890.3 ****** DAY ** ** 28 4 20 2 3 29 23 20 29 22 MIN. QFE PRESSURE IN HPA ****** ****** 878.4 877.6 877.0 870.1 872.0 873.5 878.5 882.2 882.7 883.4 ****** DAY ** ** 12 24 11 21 18 4 5 1 7 10 MEAN QNH PRESSURE IN HPA ****** ****** 1018.4 1017.7 1016.9 1010.0 1010.5 1012.1 1017.9 1022.4 1023.0 1024.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1024.5 1022.4 1020.2 1018.5 1014.1 1016.5 1021.9 1027.9 1027.6 1027.1 ****** DAY ** ** 28 4 20 2 3 29 23 20 29 22 MIN. QNH PRESSURE IN HPA ****** ****** 1013.8 1012.9 1012.2 1004.4 1006.6 1008.3 1013.9 1018.0 1018.6 1019.4 ****** DAY ** ** 12 24 11 21 18 4 5 1 7 10 MEAN QFF PRESSURE IN HPA ****** ****** 1014.9 1010.0 1006.7 998.4 999.1 1001.4 1009.6 1015.4 1019.6 1024.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1021.5 1015.5 1012.3 1008.2 1002.6 1007.5 1014.6 1023.0 1026.5 1029.4 ****** DAY ** ** 28 4 20 5 24 29 23 20 17 18 MIN. QFF PRESSURE IN HPA ****** ****** 1008.5 1005.2 1001.4 991.5 994.3 995.5 1005.1 1009.1 1014.2 1017.7 ****** DAY ** ** 12 24 11 21 19 5 4 1 7 6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 883.4 882.6 881.6 875.3 875.8 877.3 882.8 887.0 887.7 888.8 ****** MAX. QFE PRESSURE IN HPA ****** ****** 888.7 886.9 885.4 882.6 878.6 880.9 886.5 892.2 892.0 891.7 ****** DAY ** ** 28 4 20 2 3 29 23 20 29 22 MIN. QFE PRESSURE IN HPA ****** ****** 879.4 878.1 877.0 870.5 871.6 873.5 879.2 883.3 883.8 884.8 ****** DAY ** ** 12 24 11 21 18 4 4 1 7 10 MEAN QNH PRESSURE IN HPA ****** ****** 1019.4 1018.5 1017.3 1010.3 1010.8 1012.5 1018.7 1023.4 1024.3 1025.4 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1025.3 1023.3 1021.6 1018.5 1014.0 1016.6 1022.9 1029.3 1029.0 1028.7 ****** DAY ** ** 28 4 20 2 3 29 23 20 29 22 MIN. QNH PRESSURE IN HPA ****** ****** 1014.9 1013.4 1012.2 1004.9 1006.1 1008.3 1014.7 1019.3 1019.8 1021.0 ****** DAY ** ** 12 24 11 21 18 4 4 1 7 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 997.9 998.8 1001.3 1008.7 1014.5 1019.2 1024.1 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1009.0 1002.4 1006.1 1013.2 1021.8 1025.9 1028.5 ****** DAY ** ** ** ** ** 5 3 30 23 20 29 13 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 991.1 992.8 996.4 1004.2 1008.3 1013.1 1017.8 ****** DAY ** ** ** ** ** 21 18 4 4 1 7 5 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 881.4 881.1 880.0 874.0 874.3 875.7 880.8 884.9 885.3 886.4 ****** MAX. QFE PRESSURE IN HPA ****** ****** 887.2 885.1 883.1 880.3 877.0 879.5 884.3 890.1 889.7 889.5 ****** DAY ** ** 28 15 20 1 3 29 23 20 29 22 MIN. QFE PRESSURE IN HPA ****** ****** 877.3 876.4 875.5 869.0 870.2 872.1 877.1 881.6 880.7 882.0 ****** DAY ** ** 12 24 11 20 18 4 4 1 7 10 MEAN QNH PRESSURE IN HPA ****** ****** 1017.1 1016.8 1015.6 1008.8 1009.2 1010.7 1016.4 1021.0 1021.5 1022.8 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1023.7 1021.3 1019.0 1015.9 1012.2 1015.0 1020.4 1026.9 1026.5 1026.2 ****** DAY ** ** 28 15 20 1 3 29 23 20 29 22 MIN. QNH PRESSURE IN HPA ****** ****** 1012.5 1011.5 1010.5 1003.2 1004.6 1006.7 1012.3 1017.4 1016.4 1017.8 ****** DAY ** ** 12 24 11 20 18 4 4 1 7 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 996.3 996.9 999.2 1006.4 1012.1 1016.3 1021.1 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1006.7 1001.0 1004.3 1010.5 1019.6 1022.8 1025.7 ****** DAY ** ** ** ** ** 5 30 29 23 20 16 18 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 989.8 991.2 994.0 1002.0 1006.6 1009.3 1013.7 ****** DAY ** ** ** ** ** 20 18 5 4 8 7 5 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 880.3 879.4 878.4 872.4 872.8 874.1 879.3 883.6 884.3 885.6 ****** MAX. QFE PRESSURE IN HPA ****** ****** 884.9 883.7 881.8 879.6 875.7 877.8 883.1 888.9 888.9 888.4 ****** DAY ** ** 28 5 20 2 3 29 22 20 29 22 MIN. QFE PRESSURE IN HPA ****** ****** 876.1 874.8 874.8 867.6 868.6 870.1 875.5 880.1 879.5 881.2 ****** DAY ** ** 12 24 11 20 18 4 4 1 7 10 MEAN QNH PRESSURE IN HPA ****** ****** 1015.9 1014.9 1013.8 1007.0 1007.5 1008.9 1014.8 1019.6 1020.4 1021.9 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1021.1 1019.7 1017.6 1015.1 1010.7 1013.1 1019.0 1025.6 1025.6 1025.0 ****** DAY ** ** 28 5 20 2 3 29 22 20 29 22 MIN. QNH PRESSURE IN HPA ****** ****** 1011.2 1009.7 1009.7 1001.6 1002.8 1004.4 1010.5 1015.7 1015.0 1016.9 ****** DAY ** ** 12 24 11 20 18 4 4 1 7 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 994.9 995.8 997.7 1005.5 1011.5 1015.9 1020.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1005.5 999.6 1003.4 1009.7 1019.5 1023.1 1025.6 ****** DAY ** ** ** ** ** 2 30 29 23 20 29 14 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 988.6 989.9 991.3 1000.7 1006.3 1009.3 1014.0 ****** DAY ** ** ** ** ** 20 18 5 4 1 7 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 881.0 880.5 879.0 872.8 873.2 874.6 879.9 884.4 885.3 886.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** 885.2 884.6 882.3 880.3 876.8 878.0 883.5 889.1 889.7 889.4 ****** DAY ** ** 27 5 19 2 3 29 22 20 29 23 MIN. QFE PRESSURE IN HPA ****** ****** 876.8 875.9 875.5 868.1 869.0 870.6 875.9 881.5 880.3 882.7 ****** DAY ** ** 12 24 10 21 18 4 4 8 7 10 MEAN QNH PRESSURE IN HPA ****** ****** 1016.7 1016.1 1014.5 1007.5 1007.9 1009.5 1015.5 1020.5 1021.5 1023.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1021.4 1020.7 1018.1 1015.9 1012.0 1013.3 1019.5 1025.8 1026.5 1026.1 ****** DAY ** ** 27 5 19 2 3 29 22 20 29 23 MIN. QNH PRESSURE IN HPA ****** ****** 1012.0 1011.0 1010.5 1002.2 1003.2 1005.0 1011.0 1017.3 1015.9 1018.6 ****** DAY ** ** 12 24 10 21 18 4 4 8 7 10 MEAN QFF PRESSURE IN HPA ****** ****** 1013.1 1008.3 1004.3 996.0 996.6 999.0 1007.1 1013.5 1018.1 1023.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1019.0 1013.5 1010.3 1006.5 1001.1 1004.0 1011.5 1020.8 1025.0 1028.6 ****** DAY ** ** 17 10 19 2 3 29 23 20 27 14 MIN. QFF PRESSURE IN HPA ****** ****** 1006.8 1003.1 999.6 989.1 991.1 992.8 1001.9 1008.6 1011.4 1015.9 ****** DAY ** ** 9 17 10 21 18 5 4 8 7 5 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 874.4 874.9 876.4 881.4 885.5 886.1 887.3 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 881.4 878.1 880.2 884.5 890.0 890.3 890.2 ****** DAY ** ** ** ** ** 5 3 29 22 19 29 23 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 870.0 870.3 872.5 878.0 882.7 881.5 884.1 ****** DAY ** ** ** ** ** 20 18 4 4 8 7 9 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1009.2 1009.9 1011.6 1017.1 1021.8 1022.4 1023.7 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1017.1 1013.4 1015.8 1020.6 1026.8 1027.1 1027.0 ****** DAY ** ** ** ** ** 5 3 29 22 19 29 23 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1004.3 1004.7 1007.1 1013.3 1018.6 1017.3 1020.2 ****** DAY ** ** ** ** ** 20 18 4 4 8 7 9 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 996.9 997.6 1000.1 1007.0 1013.0 1017.5 1022.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1008.8 1002.1 1005.2 1011.2 1019.8 1024.5 1026.9 ****** DAY ** ** ** ** ** 5 3 29 22 19 29 14 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 989.8 991.2 994.3 1003.0 1007.4 1010.6 1015.4 ****** DAY ** ** ** ** ** 21 18 4 4 8 7 5 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 873.9 874.7 876.2 881.1 885.3 885.9 886.8 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 880.5 877.1 879.7 884.5 889.9 889.9 889.8 ****** DAY ** ** ** ** ** 5 30 29 22 19 28 23 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 869.0 870.9 872.3 877.8 882.3 881.2 883.4 ****** DAY ** ** ** ** ** 20 18 4 4 8 6 9 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1008.7 1009.7 1011.3 1016.8 1021.5 1022.2 1023.2 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1016.1 1012.3 1015.2 1020.6 1026.7 1026.7 1026.6 ****** DAY ** ** ** ** ** 5 30 29 22 19 28 23 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1003.2 1005.3 1006.9 1013.1 1018.1 1016.9 1019.4 ****** DAY ** ** ** ** ** 20 18 4 4 8 6 9 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 996.1 997.1 999.6 1006.7 1012.6 1017.1 1021.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1006.9 1001.2 1005.1 1010.9 1019.5 1023.9 1026.3 ****** DAY ** ** ** ** ** 5 30 31 22 19 29 14 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 989.1 992.0 993.5 1002.6 1006.7 1009.9 1014.1 ****** DAY ** ** ** ** ** 20 18 4 4 8 6 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 11.2 14.1 18.2 23.8 27.3 31.2 32.3 31.7 28.5 21.0 16.1 11.7 22.3 MINIMUN AIR TEMPERATURE (C) 2.2 5.5 11.8 15.1 19.2 22.4 24.5 23.9 19.3 12.8 6.2 2.5 13.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 1 9 24 30 31 7 0 0 0 102 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 1 1 DAYS WITH FREEZING MIN.<= 0 11 0 0 0 0 0 0 0 0 0 0 7 18 TEMPERATURE RECORDS LOWEST(C) -1.6 0.4 6.4 10.4 13.0 18.0 19.4 21.0 14.6 6.0 2.2 -6.0 -6.0 DAY 14 9 25 10 3 1 15 11 12 20 21 4 MAXIMUM AIR TEMPERATURE (C) 19.7 21.9 24.5 31.0 34.8 38.0 38.8 38.7 36.2 28.2 25.3 20.8 29.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 18 29 30 31 31 30 14 1 0 184 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 27.2 25.6 28.2 37.8 38.4 40.6 42.0 40.2 39.2 35.0 31.4 26.4 42.0 DAY 26 4 3 27 4 6 23 24 7 6 8 25 DIF. BETWEEN (MAX.-MIN.) (C) 17.5 16.4 12.7 15.9 15.6 15.6 14.3 14.8 16.9 15.4 19.1 18.3 16.0 MEAN DAILY TEMP. (MDT) (C) 11.0 13.7 18.1 23.0 27.0 30.2 31.7 31.3 27.8 20.5 15.7 11.6 21.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 3.9 83.6 185.8 276.5 330.9 319.8 203.1 47.1 0.0 0.0 1450.7 HEATING DEG. DAYS(BASE 18 0C) 203.1 119.8 28.0 1.4 0.0 0.0 0.0 0.0 0.0 21.0 73.4 197.4 644.1 DEWPOINT (MEAN C) -6.8 -5.5 3.0 -3.3 3.3 -1.2 3.5 7.0 1.2 -2.9 -8.6 -8.2 -1.5 MIXING RATIO (G/KG) 2.97 3.28 5.84 3.94 6.35 4.71 6.70 7.78 5.41 3.97 2.36 2.91 4.69 VAPOUR PRESSURE (HPA) 4.22 4.64 8.20 5.55 8.89 6.56 9.28 10.79 7.56 5.60 3.35 4.12 6.56 SATURATION DEF. (HPA) 10.14 12.39 13.62 25.78 28.95 40.33 40.53 37.32 33.27 21.14 16.68 10.95 24.26 RELATIVE HUMIDITY (MEAN %) 34 31 44 22 27 16 21 26 21 24 20 30 26 RELATIVE HUMIDITY (MAX. %) 57 54 69 41 49 31 42 45 37 42 32 50 46 RELATIVE HUMIDITY (MIN. %) 17 14 24 10 11 8 8 11 9 13 11 13 12 RELATIVE HUMIDITY (MEAN% 03UTC) 53 49 63 38 38 24 30 40 31 32 29 44 39 RELATIVE HUMIDITY (MEAN% 09UTC) 21 17 28 14 14 10 10 13 12 18 12 17 16 RELATIVE HUMIDITY (MEAN% 15UTC) 25 22 34 15 20 11 17 18 15 18 16 25 20 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 2.0 8.0 54.0 0.0 10.7 0.0 0.6 0.0 0.0 0.0 0.0 11.0 86.3 DAYS WITH PRECIPITATION >=10 0 0 2 0 0 0 0 0 0 0 0 1 3 DAYS WITH PRECIPITATION >= 5 0 0 4 0 1 0 0 0 0 0 0 1 6 DAYS WITH PRECIPITATION >= 1 1 3 6 0 4 0 0 0 0 0 0 1 15 DAYS WITH PRECIPITATION 2 4 9 1 11 2 1 0 0 0 0 1 31 GREATEST DAILY PRECIPITATION 2.0 3.0 19.0 0.0 6.0 0.0 0.6 0.0 0.0 0.0 0.0 11.0 19.0 DAY 4 18 24 ** 31 ** 27 ** ** ** ** 31 DAY WITH THUNDER STORM 2 3 6 0 16 5 2 3 0 0 0 0 37 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 2 5 5 3 10 14 5 8 5 1 3 61 WIND DIRECTION (PREVAILING) 45 45 270 45 45 45 45 45 45 45 360 45 45 PREVAILING WIND SPEED(KNOTS) 11.8 12.4 15.6 16.2 14.9 14.1 14.3 12.9 14.7 14.5 6.2 13.9 13.9 PREVAILING WIND PERCENT 17.7 16.1 22.6 20.4 13.7 33.3 30.2 14.1 30.4 40.7 24.6 17.3 21.8 CALMS PERCENT OF WIND 44.4 35.3 34.3 36.7 38.3 20.8 27.0 40.3 29.2 25.8 33.8 37.1 33.6 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 16 348 260 17 30 33 28 74 40 40 29 8 23 VECTOR WIND MAGNITUDE(KNOTS) 2.2 1.2 5.5 2.5 2.2 5.7 5.6 1.4 5.1 6.4 4.3 2.2 2.9 WIND STEADINESES (MEAN %) 42.3 18.7 71.4 34.7 36.7 64.8 66.7 25.5 69.9 76.2 76.8 36.7 42.0 WIND SPEED (MEAN KNOTS) 5.2 6.4 7.7 7.2 6.0 8.8 8.4 5.5 7.3 8.4 5.6 6.0 6.9 FASTEST WIND DIRECTION 240 50 240 40 50 330 10 310 30 60 50 40 50 FASTEST WIND SPEED (KNOTS) 31 35 35 33 43 31 33 23 31 31 25 27 43 DAY 3 12 14 30 15 12 11 2 8 15 30 2 DAYS WITH SKY CLEAR (0-2)/8 29 23 16 25 18 28 30 26 30 31 29 23 308 DAYS WITH P.CLOUDY (3-6)/8 1 5 9 4 12 2 1 5 0 0 1 6 46 DAYS WITH CLOUDY (7-8)/8 1 0 6 1 1 0 0 0 0 0 0 2 11 DAYS WITH VISIBILITY =< 2 KM 0 0 3 1 1 1 4 1 0 0 0 0 11 DURATION OF SUNSHINE HOURS 283.3 260.5 216.2 304.7 255.6 325.7 316.2 287.0 297.9 307.5 297.8 266.0 3418.4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 887.4 885.6 881.7 882.3 881.0 876.5 875.4 875.4 880.2 885.1 886.4 887.4 882.0 MAX. QFE PRESSURE IN HPA 893.0 891.7 888.0 887.2 885.5 881.7 880.9 881.1 885.8 889.8 893.0 893.4 893.4 DAY-HOUR 17- 6 1- 6 1- 6 17- 6 10- 6 1- 6 29- 6 7- 6 30- 6 25- 6 30- 6 1- 6 MIN. QFE PRESSURE IN HPA 880.2 880.4 874.1 878.6 876.1 871.4 871.8 870.7 875.7 878.9 880.9 880.6 870.7 DAY-HOUR 3-12 18-12 12-12 29-15 7-12 13-12 3-12 25-12 2-12 9-12 11-12 31-12 MEAN QNH PRESSURE IN HPA 1023.8 1021.9 1017.4 1018.2 1016.7 1011.6 1010.4 1010.4 1015.7 1021.3 1022.8 1023.9 1017.8 MAX. QNH PRESSURE IN HPA 1030.2 1028.7 1024.5 1023.7 1021.7 1017.5 1016.6 1016.8 1022.1 1026.6 1030.2 1030.6 1030.6 DAY-HOUR 17- 6 1- 6 1- 6 17- 6 10- 6 1- 6 29- 6 7- 6 30- 6 25- 6 30- 6 1- 6 MIN. QNH PRESSURE IN HPA 1015.8 1016.0 1008.9 1014.0 1011.2 1005.9 1006.4 1005.1 1010.7 1014.3 1016.6 1016.2 1005.1 DAY-HOUR 3-12 18-12 12-12 29-15 7-12 13-12 3-12 25-12 2-12 9-12 11-12 31-12 MEAN QFF PRESSURE IN HPA 1021.9 1018.5 1011.7 1010.1 1006.8 1000.1 998.1 998.4 1005.3 1014.5 1018.4 1021.7 1010.4 MAX. QFF PRESSURE IN HPA 1029.4 1025.4 1021.6 1015.2 1014.4 1009.6 1006.1 1004.8 1012.0 1022.9 1029.8 1032.6 1032.6 DAY-HOUR 17- 6 1- 3 23- 6 1- 6 16- 3 1- 3 28- 6 7- 6 27- 3 17- 6 30-18 1- 6 MIN. QFF PRESSURE IN HPA 1011.5 1012.3 1001.6 1004.4 1000.5 994.1 992.1 992.9 998.9 1004.8 1010.8 1011.6 992.1 DAY-HOUR 3-12 18-12 12-12 29-15 6-21 13-12 26-12 25-12 2-12 9-21 11-12 31-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 886.9 885.4 881.1 881.9 880.7 876.5 875.4 875.5 879.9 884.7 886.0 887.2 881.8 MAX. QFE PRESSURE IN HPA 890.6 889.5 885.5 885.4 884.1 880.8 879.9 878.9 883.8 887.8 890.6 891.2 891.2 DAY 20 2 2 17 16 1 29 7 27 25 30 1 MIN. QFE PRESSURE IN HPA 881.4 881.7 876.4 879.8 877.1 873.7 873.4 872.3 877.3 880.5 882.0 881.4 872.3 DAY 3 17 13 5 23 8 9 25 2 10 11 14 MEAN QNH PRESSURE IN HPA 1023.3 1021.6 1016.8 1017.7 1016.4 1011.7 1010.4 1010.5 1015.4 1020.9 1022.3 1023.6 1017.5 MAX. QNH PRESSURE IN HPA 1027.5 1026.2 1021.7 1021.6 1020.2 1016.5 1015.5 1014.3 1019.8 1024.3 1027.5 1028.1 1028.1 DAY 20 2 2 17 16 1 29 7 27 25 30 1 MIN. QNH PRESSURE IN HPA 1017.1 1017.5 1011.5 1015.3 1012.3 1008.5 1008.2 1006.9 1012.5 1016.1 1017.8 1017.1 1006.9 DAY 3 17 13 5 23 8 9 25 2 10 11 14 MEAN QFF PRESSURE IN HPA 1021.1 1018.0 1010.8 1009.7 1006.6 1000.4 998.2 998.3 1004.9 1014.0 1017.8 1021.2 1010.1 MAX. QFF PRESSURE IN HPA 1026.5 1023.2 1017.1 1013.2 1013.0 1007.6 1003.9 1001.7 1009.6 1019.5 1025.4 1029.9 1029.9 DAY 18 2 23 17 16 1 29 7 29 14 30 2 MIN. QFF PRESSURE IN HPA 1012.8 1012.5 1003.7 1005.2 1001.5 995.5 994.8 994.4 1000.7 1006.3 1012.0 1011.7 994.4 DAY 3 19 13 20 29 8 4 26 2 10 11 31 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 887.8 886.2 882.2 883.2 881.9 877.7 876.5 876.6 881.1 886.1 887.1 888.2 882.9 MAX. QFE PRESSURE IN HPA 891.2 890.8 887.2 886.6 885.5 881.1 880.4 880.0 885.1 888.9 891.6 892.3 892.3 DAY 17 1 2 17 16 1 29 7 30 13 30 2 MIN. QFE PRESSURE IN HPA 882.4 882.9 877.7 881.4 878.2 874.6 874.2 873.7 878.6 881.7 883.6 881.7 873.7 DAY 3 17 12 12 7 13 26 25 2 9 11 31 MEAN QNH PRESSURE IN HPA 1024.4 1022.6 1018.0 1019.1 1017.7 1012.9 1011.6 1011.7 1016.8 1022.4 1023.6 1024.8 1018.8 MAX. QNH PRESSURE IN HPA 1028.1 1027.7 1023.7 1023.0 1021.7 1016.8 1016.0 1015.6 1021.3 1025.6 1028.6 1029.4 1029.4 DAY 17 1 2 17 16 1 29 7 30 13 30 2 MIN. QNH PRESSURE IN HPA 1018.3 1018.8 1013.0 1017.1 1013.5 1009.5 1009.1 1008.5 1014.0 1017.5 1019.6 1017.5 1008.5 DAY 3 17 12 12 7 13 26 25 2 9 11 31 MEAN QFF PRESSURE IN HPA 1023.6 1020.4 1013.0 1011.8 1008.3 1001.8 999.8 1000.2 1007.3 1016.6 1020.7 1024.1 1012.3 MAX. QFF PRESSURE IN HPA 1028.8 1025.4 1019.5 1014.9 1014.4 1009.6 1005.9 1004.0 1012.0 1022.1 1028.0 1032.0 1032.0 DAY 17 1 1 1 16 1 28 7 27 17 30 2 MIN. QFF PRESSURE IN HPA 1014.6 1014.4 1006.7 1007.8 1003.8 996.9 996.4 996.6 1002.8 1009.0 1015.1 1012.7 996.4 DAY 3 19 20 30 29 8 26 26 3 10 11 31 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 889.4 887.5 883.3 884.0 882.4 878.0 876.6 877.0 881.9 887.0 888.2 889.4 883.7 MAX. QFE PRESSURE IN HPA 893.0 891.7 888.0 887.2 885.5 881.7 880.9 881.1 885.8 889.8 893.0 893.4 893.4 DAY 17 1 1 17 10 1 29 7 30 25 30 1 MIN. QFE PRESSURE IN HPA 884.0 884.5 878.7 882.4 879.4 874.7 874.5 874.5 879.1 881.9 884.6 883.7 874.5 DAY 3 17 12 20 6 13 9 25 2 9 10 31 MEAN QNH PRESSURE IN HPA 1026.1 1024.0 1019.2 1020.1 1018.2 1013.3 1011.7 1012.2 1017.6 1023.5 1024.8 1026.1 1019.7 MAX. QNH PRESSURE IN HPA 1030.2 1028.7 1024.5 1023.7 1021.7 1017.5 1016.6 1016.8 1022.1 1026.6 1030.2 1030.6 1030.6 DAY 17 1 1 17 10 1 29 7 30 25 30 1 MIN. QNH PRESSURE IN HPA 1020.1 1020.6 1014.1 1018.3 1014.9 1009.6 1009.4 1009.4 1014.6 1017.7 1020.7 1019.7 1009.4 DAY 3 17 12 20 6 13 9 25 2 9 10 31 MEAN QFF PRESSURE IN HPA 1024.0 1020.4 1013.4 1011.7 1007.9 1001.5 999.4 1000.0 1006.8 1016.2 1019.8 1023.7 1012.0 MAX. QFF PRESSURE IN HPA 1029.4 1025.3 1021.6 1015.2 1013.5 1008.9 1006.1 1004.8 1011.6 1022.9 1029.4 1032.6 1032.6 DAY 17 1 23 1 16 1 28 7 30 17 30 1 MIN. QFF PRESSURE IN HPA 1016.4 1016.2 1006.9 1007.5 1003.3 997.4 995.5 996.3 1002.1 1007.7 1013.9 1015.7 995.5 DAY 3 17 20 29 6 20 9 24 2 9 11 31 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 887.1 885.6 881.7 882.6 880.8 876.5 875.2 875.3 880.0 884.9 886.1 887.0 881.9 MAX. QFE PRESSURE IN HPA 890.6 889.6 886.8 885.4 884.3 880.1 879.6 879.1 884.0 888.0 890.4 891.0 891.0 DAY 17 1 23 16 10 1 28 7 30 24 30 2 MIN. QFE PRESSURE IN HPA 882.1 882.9 876.2 880.8 877.9 873.3 873.6 872.7 877.0 880.2 882.4 881.9 872.7 DAY 3 17 12 20 6 13 3 25 2 9 11 31 MEAN QNH PRESSURE IN HPA 1023.6 1021.9 1017.5 1018.5 1016.5 1011.7 1010.2 1010.2 1015.5 1021.1 1022.4 1023.4 1017.7 MAX. QNH PRESSURE IN HPA 1027.5 1026.3 1023.2 1021.6 1020.4 1015.7 1015.1 1014.6 1020.1 1024.5 1027.2 1027.9 1027.9 DAY 17 1 23 16 10 1 28 7 30 24 30 2 MIN. QNH PRESSURE IN HPA 1017.9 1018.8 1011.3 1016.5 1013.2 1008.0 1008.4 1007.4 1012.2 1015.8 1018.3 1017.7 1007.4 DAY 3 17 12 20 6 13 3 25 2 9 11 31 MEAN QFF PRESSURE IN HPA 1020.9 1017.7 1011.4 1010.0 1006.3 999.8 997.8 997.9 1004.6 1013.6 1017.3 1020.5 1009.8 MAX. QFF PRESSURE IN HPA 1026.0 1022.2 1020.0 1013.6 1011.1 1006.4 1004.5 1002.3 1009.7 1019.4 1026.4 1029.5 1029.5 DAY 17 3 23 6 10 1 28 7 30 17 30 1 MIN. QFF PRESSURE IN HPA 1013.7 1013.8 1004.1 1006.3 1002.1 996.2 995.2 994.7 999.7 1006.0 1012.1 1013.0 994.7 DAY 3 11 12 20 28 8 25 25 2 9 11 31 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 885.8 884.1 880.2 880.8 879.6 875.1 873.9 873.6 878.6 883.6 885.0 886.0 880.5 MAX. QFE PRESSURE IN HPA 889.4 888.6 885.2 883.8 883.2 879.2 877.5 877.7 882.4 886.8 889.5 890.2 890.2 DAY 17 1 23 6 15 1 29 7 30 24 30 2 MIN. QFE PRESSURE IN HPA 880.2 880.4 874.1 878.9 876.1 871.4 871.8 870.7 875.7 878.9 880.9 880.6 870.7 DAY 3 18 12 29 7 13 3 25 2 9 11 31 MEAN QNH PRESSURE IN HPA 1022.1 1020.1 1015.8 1016.5 1015.1 1010.1 1008.7 1008.3 1014.0 1019.6 1021.1 1022.3 1016.1 MAX. QNH PRESSURE IN HPA 1026.1 1025.2 1021.4 1019.8 1019.2 1014.7 1012.8 1013.0 1018.3 1023.2 1026.2 1027.0 1027.0 DAY 17 1 23 6 15 1 29 7 30 24 30 2 MIN. QNH PRESSURE IN HPA 1015.8 1016.0 1008.9 1014.3 1011.2 1005.9 1006.4 1005.1 1010.7 1014.3 1016.6 1016.2 1005.1 DAY 3 18 12 29 7 13 3 25 2 9 11 31 MEAN QFF PRESSURE IN HPA 1019.9 1016.5 1009.9 1008.5 1005.6 998.8 996.7 996.4 1003.5 1012.9 1016.7 1019.7 1008.8 MAX. QFF PRESSURE IN HPA 1025.3 1021.6 1018.6 1013.3 1011.9 1006.4 1001.7 1001.1 1008.2 1018.5 1026.1 1028.7 1028.7 DAY 17 1 23 6 15 1 29 7 30 17 30 1 MIN. QFF PRESSURE IN HPA 1011.5 1012.3 1001.6 1004.6 1000.7 994.1 992.1 992.9 998.9 1004.9 1010.8 1011.6 992.1 DAY 3 18 12 30 29 13 26 25 2 9 11 31 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 886.8 884.8 880.9 881.2 880.0 875.3 874.2 874.1 879.2 884.3 886.0 886.9 881.1 MAX. QFE PRESSURE IN HPA 890.4 889.4 885.7 884.0 884.0 879.2 878.7 877.7 883.4 887.7 890.5 891.0 891.0 DAY 17 1 22 16 15 1 27 6 30 24 30 1 MIN. QFE PRESSURE IN HPA 881.4 881.3 874.7 878.6 876.1 871.7 871.9 871.2 876.0 879.0 881.6 881.6 871.2 DAY 2 16 12 29 7 13 3 17 10 9 11 30 MEAN QNH PRESSURE IN HPA 1023.2 1020.9 1016.6 1016.9 1015.6 1010.2 1009.0 1009.0 1014.6 1020.4 1022.3 1023.3 1016.8 MAX. QNH PRESSURE IN HPA 1027.2 1026.1 1022.0 1020.1 1020.1 1014.7 1014.1 1013.0 1019.4 1024.2 1027.4 1027.9 1027.9 DAY 17 1 22 16 15 1 27 6 30 24 30 1 MIN. QNH PRESSURE IN HPA 1017.1 1017.0 1009.6 1014.0 1011.2 1006.2 1006.5 1005.7 1011.1 1014.4 1017.4 1017.4 1005.7 DAY 2 16 12 29 7 13 3 17 10 9 11 30 MEAN QFF PRESSURE IN HPA 1022.5 1018.7 1011.7 1009.6 1006.3 999.1 997.3 997.6 1005.2 1014.6 1019.5 1022.6 1010.4 MAX. QFF PRESSURE IN HPA 1027.8 1023.6 1018.8 1013.9 1013.0 1006.2 1003.9 1002.0 1010.4 1020.1 1028.4 1030.8 1030.8 DAY 17 1 22 6 15 1 27 6 30 17 30 1 MIN. QFF PRESSURE IN HPA 1014.4 1014.9 1004.0 1004.4 1001.7 994.8 994.3 994.1 1000.4 1006.1 1013.1 1013.7 994.1 DAY 3 18 12 29 6 13 17 25 2 9 11 31 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 887.7 886.0 882.2 882.7 881.6 876.7 875.8 876.0 880.7 885.4 886.7 887.6 882.4 MAX. QFE PRESSURE IN HPA 891.5 890.2 886.6 886.2 884.8 880.7 880.3 879.4 884.7 888.5 891.9 892.1 892.1 DAY 17 1 1 16 14 1 28 7 30 24 30 1 MIN. QFE PRESSURE IN HPA 881.9 882.9 876.8 880.4 877.2 873.6 873.6 872.8 877.6 880.1 882.6 882.9 872.8 DAY 2 16 12 4 6 13 25 24 10 9 10 13 MEAN QNH PRESSURE IN HPA 1024.2 1022.3 1018.1 1018.6 1017.4 1011.8 1010.8 1011.0 1016.4 1021.7 1023.1 1024.1 1018.3 MAX. QNH PRESSURE IN HPA 1028.5 1027.0 1023.0 1022.5 1021.0 1016.4 1015.9 1014.9 1020.8 1025.1 1028.9 1029.2 1029.2 DAY 17 1 1 16 14 1 28 7 30 24 30 1 MIN. QNH PRESSURE IN HPA 1017.7 1018.8 1012.0 1016.0 1012.4 1008.4 1008.4 1007.5 1012.9 1015.7 1018.5 1018.8 1007.5 DAY 2 16 12 4 6 13 25 24 10 9 10 13 MEAN QFF PRESSURE IN HPA 1022.0 1018.6 1012.2 1010.0 1007.0 999.9 998.3 998.8 1005.5 1014.5 1018.1 1021.6 1010.5 MAX. QFF PRESSURE IN HPA 1027.4 1023.1 1019.5 1014.3 1012.1 1007.4 1004.5 1003.0 1010.7 1020.7 1029.8 1031.6 1031.6 DAY 17 1 23 6 15 1 28 31 30 17 30 1 MIN. QFF PRESSURE IN HPA 1014.9 1014.9 1004.7 1004.7 1001.5 995.9 994.8 994.5 1000.9 1005.0 1011.9 1014.8 994.5 DAY 2 16 12 29 6 19 9 24 2 9 10 30 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 887.4 885.7 881.7 882.4 881.1 876.3 875.5 875.7 880.2 885.0 886.4 887.2 882.0 MAX. QFE PRESSURE IN HPA 891.0 889.7 886.1 886.0 884.6 879.4 880.1 878.8 884.7 888.0 891.3 891.6 891.6 DAY 17 1 1 16 14 27 28 7 30 24 30 1 MIN. QFE PRESSURE IN HPA 881.6 882.1 876.8 880.7 876.3 873.2 873.5 872.9 877.0 879.9 882.0 882.3 872.9 DAY 2 16 12 4 6 7 8 25 10 9 10 30 MEAN QNH PRESSURE IN HPA 1023.8 1021.9 1017.5 1018.2 1016.8 1011.4 1010.5 1010.7 1015.8 1021.2 1022.7 1023.7 1017.9 MAX. QNH PRESSURE IN HPA 1027.9 1026.5 1022.4 1022.3 1020.7 1014.9 1015.7 1014.2 1020.8 1024.5 1028.3 1028.6 1028.6 DAY 17 1 1 16 14 27 28 7 30 24 30 1 MIN. QNH PRESSURE IN HPA 1017.4 1017.9 1012.0 1016.4 1011.4 1007.9 1008.3 1007.6 1012.2 1015.5 1017.8 1018.1 1007.6 DAY 2 16 12 4 6 7 8 25 10 9 10 30 MEAN QFF PRESSURE IN HPA 1021.1 1017.7 1011.2 1009.6 1006.3 999.4 997.7 998.1 1004.8 1013.9 1017.7 1020.7 1009.9 MAX. QFF PRESSURE IN HPA 1026.8 1022.5 1016.9 1013.9 1011.1 1004.8 1004.5 1001.2 1010.6 1019.6 1029.3 1030.1 1030.1 DAY 17 1 23 6 15 1 28 7 30 16 30 1 MIN. QFF PRESSURE IN HPA 1013.1 1012.7 1004.2 1005.2 1000.5 994.8 994.7 994.3 1000.2 1004.8 1011.6 1012.7 994.3 DAY 2 16 12 29 6 7 10 25 1 9 10 30 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 10.9 12.8 18.5 24.5 30.6 32.8 33.0 32.7 30.0 24.7 19.0 14.9 23.7 MINIMUN AIR TEMPERATURE (C) 4.9 6.6 10.8 15.9 20.8 24.7 25.6 23.2 18.9 13.7 6.9 6.7 14.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 1 15 30 30 26 12 0 0 0 114 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 5 1 0 0 0 0 0 0 0 0 2 1 9 TEMPERATURE RECORDS LOWEST(C) -2.0 -0.6 2.6 7.4 16.4 21.0 20.2 19.0 9.0 8.6 -1.8 -3.8 -3.8 DAY 22 10 1 5 1 3 20 31 27 6 28 31 MAXIMUM AIR TEMPERATURE (C) 17.5 19.2 26.2 31.7 38.1 40.2 38.9 38.1 35.3 30.0 25.2 20.2 30.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 4 23 31 30 31 31 28 15 0 0 193 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 22.2 27.6 31.6 36.0 42.6 44.6 43.0 41.0 39.6 33.6 29.8 23.4 44.6 DAY 17 25 23 14 29 24 3 8 6 16 15 13 DIF. BETWEEN (MAX.-MIN.) (C) 12.6 12.6 15.4 15.8 17.3 15.5 13.3 14.9 16.4 16.3 18.3 13.5 15.1 MEAN DAILY TEMP. (MDT) (C) 11.2 12.9 18.5 23.8 29.4 32.5 32.3 30.7 27.1 21.8 16.0 13.4 22.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 10.6 93.1 261.7 344.0 349.2 299.5 185.7 38.1 0.0 0.0 1581.9 HEATING DEG. DAYS(BASE 18 0C) 211.8 150.2 35.1 0.8 0.0 0.0 0.0 0.0 0.0 0.0 71.7 141.1 610.7 DEWPOINT (MEAN C) -1.4 -1.1 -1.5 2.5 3.2 -0.7 12.7 4.4 -2.3 -3.5 -5.5 -0.0 0.6 MIXING RATIO (G/KG) 4.26 4.44 4.40 5.52 5.83 5.43 11.83 6.81 4.62 3.75 3.14 4.82 5.40 VAPOUR PRESSURE (HPA) 6.01 6.25 6.17 7.74 8.15 7.51 16.23 9.44 6.46 5.30 4.45 6.80 7.54 SATURATION DEF. (HPA) 7.64 9.25 16.37 24.53 37.74 44.14 35.56 41.43 37.87 27.12 19.23 10.88 25.98 RELATIVE HUMIDITY (MEAN %) 48 43 31 27 20 17 36 22 16 18 21 41 28 RELATIVE HUMIDITY (MAX. %) 74 63 51 41 35 37 64 44 35 31 38 67 48 RELATIVE HUMIDITY (MIN. %) 24 25 15 16 11 5 18 10 7 11 12 26 15 RELATIVE HUMIDITY (MEAN% 03UTC) 68 60 44 35 28 24 63 43 33 30 37 65 44 RELATIVE HUMIDITY (MEAN% 09UTC) 30 28 19 17 12 10 22 13 10 13 17 31 19 RELATIVE HUMIDITY (MEAN% 15UTC) 39 39 24 24 15 12 31 18 12 16 18 38 24 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 23.1 10.1 1.0 4.3 0.0 19.0 39.5 5.4 0.0 0.0 0.0 1.5 103.9 DAYS WITH PRECIPITATION >=10 2 0 0 0 0 1 1 0 0 0 0 0 4 DAYS WITH PRECIPITATION >= 5 2 1 0 0 0 1 1 0 0 0 0 0 5 DAYS WITH PRECIPITATION >= 1 2 2 1 2 0 1 4 2 0 0 0 0 14 DAYS WITH PRECIPITATION 3 4 1 4 0 1 5 3 0 0 0 3 24 GREATEST DAILY PRECIPITATION 12.0 7.0 1.0 3.0 0.0 19.0 32.0 3.0 0.0 0.0 0.0 0.9 32.0 DAY 10 12 3 26 ** 19 20 31 ** ** ** 2 DAY WITH THUNDER STORM 1 1 0 5 1 2 8 4 0 0 0 0 22 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 3 3 10 7 6 7 15 9 9 5 1 4 79 WIND DIRECTION (PREVAILING) 45 45 270 270 45 45 180 45 45 45 45 45 45 PREVAILING WIND SPEED(KNOTS) 12.0 13.4 14.6 12.7 13.6 15.0 9.3 13.0 15.2 15.3 11.3 12.7 14.0 PREVAILING WIND PERCENT 19.4 24.1 17.7 14.4 16.9 30.8 16.0 18.1 38.7 40.6 20.7 18.7 22.0 CALMS PERCENT OF WIND 41.5 35.3 28.2 36.7 37.9 33.8 38.7 51.0 34.7 27.7 50.7 34.8 37.1 NO. OF WIND OBSERVATION 248 232 248 229 248 240 163 155 150 155 150 155 2373 VECTOR WIND DIRECTION (MEAN) 3 22 298 327 15 42 114 49 46 41 46 317 31 VECTOR WIND MAGNITUDE(KNOTS) 1.0 2.1 2.7 2.5 2.2 4.7 1.7 2.8 6.5 7.3 2.0 0.8 2.4 WIND STEADINESES (MEAN %) 17.2 31.8 30.0 36.8 34.9 58.7 25.0 50.9 75.6 78.5 44.4 11.8 34.3 WIND SPEED (MEAN KNOTS) 5.8 6.6 9.0 6.8 6.3 8.0 6.8 5.5 8.6 9.3 4.5 6.8 7.0 FASTEST WIND DIRECTION 60 290 240 290 240 40 260 40 20 50 40 310 290 FASTEST WIND SPEED (KNOTS) 25 29 29 31 29 29 31 29 29 31 21 29 31 DAY 10 4 10 6 16 8 15 1 8 3 16 29 DAYS WITH SKY CLEAR (0-2)/8 22 18 25 21 31 27 21 27 30 31 29 18 300 DAYS WITH P.CLOUDY (3-6)/8 8 8 6 8 0 3 9 4 0 0 1 12 59 DAYS WITH CLOUDY (7-8)/8 1 3 0 1 0 0 1 0 0 0 0 1 7 DAYS WITH VISIBILITY =< 2 KM 1 0 3 0 0 1 5 2 0 0 0 1 13 DURATION OF SUNSHINE HOURS 249.4 215.3 290.1 271.8 346.2 317.3 266.7 298.6 302.6 318.9 286.6 239.2 3402.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 885.1 883.9 880.9 881.2 878.5 875.0 872.2 874.3 878.7 884.0 886.6 886.1 880.5 MAX. QFE PRESSURE IN HPA 893.1 889.5 885.5 887.8 883.8 882.7 876.5 879.8 883.8 888.9 891.2 893.0 893.1 DAY-HOUR 3- 6 7- 6 1- 6 12- 6 5- 6 1- 3 11- 3 31- 6 14- 6 17- 6 6- 6 30- 6 MIN. QFE PRESSURE IN HPA 879.6 879.2 872.4 875.8 874.1 868.4 867.3 869.1 873.5 877.9 881.1 881.0 867.3 DAY-HOUR 22-12 12-12 24- 6 30-12 30-12 25-12 13-15 1-12 1-12 6-12 22-12 7-12 MEAN QNH PRESSURE IN HPA 1021.3 1019.9 1016.6 1016.9 1013.9 1010.0 1006.9 1009.1 1014.1 1020.0 1022.9 1022.4 1016.2 MAX. QNH PRESSURE IN HPA 1030.3 1026.2 1021.7 1024.3 1019.8 1018.6 1011.6 1015.3 1019.8 1025.6 1028.1 1030.2 1030.3 DAY-HOUR 3- 6 7- 6 1- 6 12- 6 5- 6 1- 3 11- 3 31- 6 14- 6 17- 6 6- 6 30- 6 MIN. QNH PRESSURE IN HPA 1015.1 1014.7 1007.0 1010.8 1008.9 1002.5 1001.3 1003.3 1008.3 1013.2 1016.8 1016.7 1001.3 DAY-HOUR 22-12 12-12 24- 6 30-12 30-12 25-12 13-15 1-12 1-12 6-12 22-12 7-12 MEAN QFF PRESSURE IN HPA 1019.4 1017.0 1010.9 1008.2 1002.5 997.6 ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1029.6 1026.2 1019.0 1019.3 1009.8 1007.5 ****** ****** ****** ****** ****** ****** ****** DAY-HOUR 3- 6 8- 6 1- 3 4- 6 3- 3 1- 3 **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA 1010.1 1010.0 997.9 1001.5 996.8 989.2 ****** ****** ****** ****** ****** ****** ****** DAY-HOUR 19-21 26-12 24- 0 15-12 30-12 24-12 **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 884.7 883.2 880.5 880.5 878.2 875.1 ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 889.5 886.1 883.2 885.5 882.1 881.0 ****** ****** ****** ****** ****** ****** ****** DAY 3 8 1 13 3 1 ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA 879.7 879.7 872.7 877.3 875.6 869.8 ****** ****** ****** ****** ****** ****** ****** DAY 20 27 24 16 30 26 ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1020.8 1019.2 1016.2 1016.2 1013.6 1010.0 ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1026.2 1022.4 1019.2 1021.7 1017.9 1016.7 ****** ****** ****** ****** ****** ****** ****** DAY 3 8 1 13 3 1 ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1015.2 1015.2 1007.4 1012.5 1010.6 1004.1 ****** ****** ****** ****** ****** ****** ****** DAY 20 27 24 16 30 26 ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1018.5 1016.0 1010.4 1007.6 1002.4 997.8 ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1024.9 1023.2 1016.9 1015.7 1008.2 1005.1 ****** ****** ****** ****** ****** ****** ****** DAY 4 8 1 4 3 2 ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1011.3 1010.1 997.9 1002.4 998.6 990.3 ****** ****** ****** ****** ****** ****** ****** DAY 20 27 24 16 30 26 ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 885.6 884.4 881.8 882.2 879.7 876.2 873.7 875.5 879.9 884.8 887.4 886.7 881.5 MAX. QFE PRESSURE IN HPA 891.6 887.4 884.5 886.9 883.4 882.7 876.5 879.5 883.3 888.2 890.1 891.7 891.7 DAY 3 7 17 12 3 1 11 31 14 17 6 30 MIN. QFE PRESSURE IN HPA 880.0 881.3 872.7 878.8 876.8 871.1 871.3 871.8 876.7 880.4 883.7 882.3 871.1 DAY 20 27 24 22 30 26 18 1 8 7 22 8 MEAN QNH PRESSURE IN HPA 1021.8 1020.5 1017.6 1018.1 1015.2 1011.2 1008.4 1010.5 1015.5 1020.9 1023.9 1023.1 1017.2 MAX. QNH PRESSURE IN HPA 1028.6 1023.9 1020.6 1023.3 1019.4 1018.6 1011.6 1015.0 1019.3 1024.8 1026.9 1028.7 1028.7 DAY 3 7 17 12 3 1 11 31 14 17 6 30 MIN. QNH PRESSURE IN HPA 1015.6 1017.0 1007.4 1014.2 1012.0 1005.6 1005.8 1006.4 1011.9 1016.0 1019.7 1018.1 1005.6 DAY 20 27 24 22 30 26 18 1 8 7 22 8 MEAN QFF PRESSURE IN HPA 1020.7 1018.4 1012.8 1010.4 1004.4 999.3 996.3 999.4 1006.0 1014.4 1020.7 1021.0 1010.3 MAX. QFF PRESSURE IN HPA 1027.4 1025.6 1019.0 1018.5 1009.8 1007.5 999.6 1006.5 1011.3 1018.7 1026.4 1028.4 1028.4 DAY 3 8 1 4 3 1 9 31 30 27 27 30 MIN. QFF PRESSURE IN HPA 1012.2 1012.9 999.4 1004.8 999.6 992.1 992.3 993.9 1000.0 1008.9 1016.7 1015.2 992.1 DAY 20 27 24 16 30 26 14 1 8 7 22 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 887.0 885.9 882.7 882.9 880.2 876.5 873.7 875.9 880.4 885.7 888.4 887.9 882.3 MAX. QFE PRESSURE IN HPA 893.1 889.5 885.5 887.8 883.8 882.7 876.3 879.8 883.8 888.9 891.2 893.0 893.1 DAY 3 7 1 12 5 1 11 31 14 17 6 30 MIN. QFE PRESSURE IN HPA 882.6 882.9 872.4 879.6 877.2 871.5 871.0 872.1 877.0 881.1 884.4 883.9 871.0 DAY 20 12 24 16 30 24 13 1 8 7 22 8 MEAN QNH PRESSURE IN HPA 1023.4 1022.2 1018.6 1018.9 1015.8 1011.6 1008.5 1010.9 1016.0 1021.9 1025.0 1024.4 1018.1 MAX. QNH PRESSURE IN HPA 1030.3 1026.2 1021.7 1024.3 1019.8 1018.6 1011.4 1015.3 1019.8 1025.6 1028.1 1030.2 1030.3 DAY 3 7 1 12 5 1 11 31 14 17 6 30 MIN. QNH PRESSURE IN HPA 1018.5 1018.8 1007.0 1015.1 1012.4 1006.0 1005.5 1006.7 1012.2 1016.8 1020.5 1019.9 1005.5 DAY 20 12 24 16 30 24 13 1 8 7 22 8 MEAN QFF PRESSURE IN HPA 1021.6 1019.1 1012.8 1009.8 1004.0 999.0 ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1029.6 1026.2 1018.9 1019.3 1008.8 1007.3 ****** ****** ****** ****** ****** ****** ****** DAY 3 8 1 4 3 1 ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1015.1 1014.2 999.2 1004.7 999.6 991.7 ****** ****** ****** ****** ****** ****** ****** DAY 26 25 24 22 30 26 ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 884.9 883.8 880.8 881.2 878.7 875.0 872.1 874.2 878.5 883.6 886.1 885.5 880.4 MAX. QFE PRESSURE IN HPA 891.5 887.0 883.5 886.7 882.2 881.5 875.3 878.1 881.5 886.5 889.0 889.9 891.5 DAY 3 7 17 12 3 1 29 27 14 17 6 3 MIN. QFE PRESSURE IN HPA 880.5 880.3 873.5 878.0 875.4 869.5 869.3 870.5 875.2 879.5 882.1 881.4 869.3 DAY 27 12 24 15 30 24 13 1 8 6 21 26 MEAN QNH PRESSURE IN HPA 1021.1 1019.9 1016.5 1017.0 1014.1 1009.9 1006.7 1009.1 1013.9 1019.6 1022.4 1021.7 1016.0 MAX. QNH PRESSURE IN HPA 1028.5 1023.4 1019.5 1023.1 1018.0 1017.3 1010.3 1013.4 1017.3 1022.9 1025.7 1026.7 1028.5 DAY 3 7 17 12 3 1 29 27 14 17 6 3 MIN. QNH PRESSURE IN HPA 1016.1 1015.9 1008.3 1013.3 1010.4 1003.8 1003.5 1004.9 1010.2 1015.0 1017.9 1017.1 1003.5 DAY 27 12 24 15 30 24 13 1 8 6 21 26 MEAN QFF PRESSURE IN HPA 1018.6 1016.4 1010.3 1007.6 1002.3 997.2 ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1026.9 1022.9 1015.5 1016.6 1007.0 1005.5 ****** ****** ****** ****** ****** ****** ****** DAY 3 8 26 4 3 1 ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1011.9 1010.0 1000.9 1003.1 997.4 989.7 ****** ****** ****** ****** ****** ****** ****** DAY 26 25 24 22 30 24 ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 883.8 882.5 879.1 879.6 877.0 873.7 870.4 872.6 877.1 882.5 885.0 884.5 879.0 MAX. QFE PRESSURE IN HPA 889.8 886.0 881.8 884.4 880.5 879.8 873.5 876.2 880.1 885.3 888.1 888.7 889.8 DAY 3 7 17 12 2 1 29 27 14 27 6 3 MIN. QFE PRESSURE IN HPA 879.6 879.2 873.5 875.8 874.1 868.4 867.6 869.1 873.5 877.9 881.1 881.0 867.6 DAY 22 12 24 30 30 25 13 1 1 6 22 7 MEAN QNH PRESSURE IN HPA 1019.8 1018.4 1014.6 1015.1 1012.2 1008.4 1004.8 1007.2 1012.3 1018.4 1021.2 1020.6 1014.4 MAX. QNH PRESSURE IN HPA 1026.6 1022.3 1017.6 1020.5 1016.1 1015.3 1008.3 1011.3 1015.7 1021.5 1024.7 1025.3 1026.6 DAY 3 7 17 12 2 1 29 27 14 27 6 3 MIN. QNH PRESSURE IN HPA 1015.1 1014.7 1008.3 1010.8 1008.9 1002.5 1001.6 1003.3 1008.3 1013.2 1016.8 1016.7 1001.6 DAY 22 12 24 30 30 25 13 1 1 6 22 7 MEAN QFF PRESSURE IN HPA 1017.5 1015.2 1008.8 1006.3 1001.1 996.4 ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1025.5 1021.7 1014.6 1014.4 1006.0 1003.9 ****** ****** ****** ****** ****** ****** ****** DAY 3 7 25 4 2 1 ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1011.1 1010.0 1001.0 1001.5 996.8 989.2 ****** ****** ****** ****** ****** ****** ****** DAY 19 26 24 15 30 24 ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 884.6 883.3 880.1 880.2 877.3 873.9 871.1 873.2 877.7 883.3 885.9 885.7 879.7 MAX. QFE PRESSURE IN HPA 890.5 887.2 882.5 885.2 880.8 879.9 874.3 878.3 880.7 885.7 888.7 889.7 890.5 DAY 3 7 17 12 2 1 11 30 14 27 5 3 MIN. QFE PRESSURE IN HPA 880.6 879.9 875.5 876.0 874.4 868.7 867.3 869.5 873.8 878.4 881.5 881.5 867.3 DAY 22 26 24 30 30 25 13 1 2 6 22 7 MEAN QNH PRESSURE IN HPA 1020.7 1019.3 1015.7 1015.8 1012.5 1008.7 1005.6 1007.9 1013.0 1019.3 1022.2 1022.0 1015.2 MAX. QNH PRESSURE IN HPA 1027.4 1023.7 1018.4 1021.4 1016.5 1015.5 1009.2 1013.7 1016.4 1022.0 1025.3 1026.5 1027.4 DAY 3 7 17 12 2 1 11 30 14 27 5 3 MIN. QNH PRESSURE IN HPA 1016.2 1015.5 1010.5 1011.1 1009.3 1002.9 1001.3 1003.8 1008.6 1013.8 1017.3 1017.3 1001.3 DAY 22 26 24 30 30 25 13 1 2 6 22 7 MEAN QFF PRESSURE IN HPA 1019.6 1017.2 1010.8 1008.1 1001.7 996.9 993.8 997.0 1003.7 1012.7 1018.9 1019.9 1008.4 MAX. QFF PRESSURE IN HPA 1027.2 1024.4 1016.8 1015.4 1006.8 1004.4 997.9 1005.0 1009.4 1016.6 1024.2 1026.5 1027.2 DAY 3 7 25 4 2 1 29 30 30 27 27 30 MIN. QFF PRESSURE IN HPA 1012.2 1011.5 1004.2 1002.7 996.8 989.7 989.2 992.0 997.3 1007.2 1014.7 1016.0 989.2 DAY 19 26 23 15 30 24 13 1 2 7 22 7 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 885.5 884.4 881.4 881.5 878.9 875.3 ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 890.5 888.2 883.6 886.8 882.4 881.0 ****** ****** ****** ****** ****** ****** ****** DAY 3 7 15 12 2 1 ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA 881.0 881.1 876.4 877.7 876.4 870.6 ****** ****** ****** ****** ****** ****** ****** DAY 19 26 23 15 29 25 ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1021.8 1020.5 1017.1 1017.3 1014.4 1010.3 ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1027.4 1024.8 1019.6 1023.2 1018.3 1016.7 ****** ****** ****** ****** ****** ****** ****** DAY 3 7 15 12 2 1 ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1016.7 1016.8 1011.5 1013.0 1011.5 1005.0 ****** ****** ****** ****** ****** ****** ****** DAY 19 26 23 15 29 25 ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1019.8 1017.4 1011.2 1008.3 1002.4 997.5 ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1027.1 1025.8 1018.1 1016.7 1007.2 1005.3 ****** ****** ****** ****** ****** ****** ****** DAY 3 7 25 3 2 1 ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1012.6 1012.0 1002.7 1002.4 998.1 990.4 ****** ****** ****** ****** ****** ****** ****** DAY 19 25 23 15 30 24 ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 885.2 883.8 880.9 880.9 878.5 874.9 ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 889.7 886.7 883.4 886.0 882.4 880.6 ****** ****** ****** ****** ****** ****** ****** DAY 3 7 17 12 2 1 ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA 880.2 880.5 874.9 877.4 875.6 870.0 ****** ****** ****** ****** ****** ****** ****** DAY 19 26 23 15 29 23 ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1021.4 1019.9 1016.5 1016.6 1013.9 1009.8 ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1026.5 1023.1 1019.4 1022.3 1018.3 1016.2 ****** ****** ****** ****** ****** ****** ****** DAY 3 7 17 12 2 1 ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1015.8 1016.1 1009.8 1012.6 1010.6 1004.3 ****** ****** ****** ****** ****** ****** ****** DAY 19 26 23 15 29 23 ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1018.9 1016.4 1010.2 1007.4 1002.0 996.9 ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1025.8 1023.4 1016.6 1016.5 1007.0 1004.8 ****** ****** ****** ****** ****** ****** ****** DAY 3 7 25 3 2 1 ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1010.1 1010.5 1000.6 1002.3 997.8 989.9 ****** ****** ****** ****** ****** ****** ****** DAY 19 25 23 15 29 24 ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 8.8 10.7 16.3 21.7 27.1 32.1 31.7 30.0 26.7 22.8 17.7 12.4 21.5 MINIMUN AIR TEMPERATURE (C) 1.2 4.2 9.2 14.2 17.8 23.1 24.6 21.1 17.9 13.3 9.4 6.3 13.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 9 26 29 16 4 0 0 0 84 DAYS WITH MINIMUM TEMP. <=-4 4 0 0 0 0 0 0 0 0 0 0 0 4 DAYS WITH FREEZING MIN.<= 0 14 5 0 0 0 0 0 0 0 0 0 1 20 TEMPERATURE RECORDS LOWEST(C) -6.2 -2.8 1.6 6.8 6.4 18.6 21.0 17.0 10.0 8.6 5.6 0.0 -6.2 DAY 20 10 1 2 3 17 1 31 26 30 30 24 MAXIMUM AIR TEMPERATURE (C) 16.5 17.4 22.9 28.4 34.5 39.1 39.0 37.4 35.0 31.0 25.7 18.6 28.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 12 26 30 31 31 28 20 0 0 178 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 22.0 25.8 29.0 34.4 41.0 41.2 41.6 39.4 37.6 34.8 29.2 23.4 41.6 DAY 29 22 11 20 29 12 12 15 5 4 1 1 DIF. BETWEEN (MAX.-MIN.) (C) 15.3 13.2 13.7 14.2 16.7 16.0 14.4 16.3 17.1 17.7 16.3 12.3 15.3 MEAN DAILY TEMP. (MDT) (C) 8.8 10.8 16.1 21.3 26.2 31.1 31.8 29.3 26.4 22.1 17.5 12.4 21.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 48.9 180.1 302.6 314.0 248.0 162.6 45.9 0.0 0.0 1302.2 HEATING DEG. DAYS(BASE 18 0C) 283.8 201.4 65.0 12.2 7.1 0.0 0.0 0.0 0.0 0.0 26.2 172.6 768.2 DEWPOINT (MEAN C) -9.6 -5.6 0.3 -1.0 -4.0 0.1 6.9 5.7 3.5 -2.7 0.7 1.9 -0.3 MIXING RATIO (G/KG) 2.53 3.42 4.94 4.55 3.68 5.33 8.51 7.42 6.94 3.90 4.74 5.40 5.11 VAPOUR PRESSURE (HPA) 3.57 4.82 6.93 6.39 5.17 7.40 11.73 10.28 9.66 5.50 6.69 7.62 7.15 SATURATION DEF. (HPA) 8.56 8.85 12.45 20.82 33.37 42.01 36.36 33.60 27.25 24.04 14.67 7.48 22.46 RELATIVE HUMIDITY (MEAN %) 31 38 40 27 15 17 28 26 29 20 35 53 30 RELATIVE HUMIDITY (MAX. %) 54 65 64 52 27 35 55 45 50 32 55 79 51 RELATIVE HUMIDITY (MIN. %) 14 20 22 13 8 7 10 12 12 12 20 30 15 RELATIVE HUMIDITY (MEAN% 03UTC) 45 55 58 38 19 25 42 37 42 27 48 76 43 RELATIVE HUMIDITY (MEAN% 09UTC) 18 24 27 16 9 9 14 16 13 13 24 33 18 RELATIVE HUMIDITY (MEAN% 15UTC) 27 29 33 21 11 10 20 20 22 17 28 47 24 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 0.4 15.8 45.6 1.7 0.0 0.0 17.0 3.2 8.0 0.0 0.3 20.8 112.8 DAYS WITH PRECIPITATION >=10 0 1 2 0 0 0 1 0 0 0 0 1 5 DAYS WITH PRECIPITATION >= 5 0 1 4 0 0 0 1 0 1 0 0 1 8 DAYS WITH PRECIPITATION >= 1 0 1 6 0 0 0 2 1 1 0 0 1 12 DAYS WITH PRECIPITATION 2 2 8 5 0 0 3 2 1 0 1 2 26 GREATEST DAILY PRECIPITATION 0.4 15.3 14.6 0.6 0.0 0.0 13.0 3.0 8.0 0.0 0.3 20.6 20.6 DAY 5 3 18 13 ** ** 14 3 20 ** 25 17 DAY WITH THUNDER STORM 0 0 1 0 0 2 3 2 2 0 1 1 12 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 13 9 7 5 12 10 18 13 4 1 1 0 93 WIND DIRECTION (PREVAILING) 45 45 315 45 45 360 360 360 45 360 45 180 45 PREVAILING WIND SPEED(KNOTS) 13.5 13.7 8.9 12.8 15.4 13.8 13.4 11.7 11.5 9.7 10.4 7.4 12.7 PREVAILING WIND PERCENT 27.5 38.4 12.9 21.7 46.8 30.0 19.4 21.0 14.6 20.2 13.3 10.5 19.5 CALMS PERCENT OF WIND 32.0 23.7 40.7 42.1 31.9 32.1 39.1 42.7 47.5 34.7 51.7 50.0 39.1 NO. OF WIND OBSERVATION 247 224 248 240 248 240 248 248 240 248 240 248 2919 VECTOR WIND DIRECTION (MEAN) 11 30 289 9 41 2 358 19 21 14 2 218 14 VECTOR WIND MAGNITUDE(KNOTS) 2.8 3.8 1.7 3.1 7.3 5.5 3.4 3.5 2.2 3.7 2.0 0.8 3.0 WIND STEADINESES (MEAN %) 34.6 40.9 26.6 48.4 79.3 70.5 53.1 58.3 47.8 69.8 51.3 20.0 46.9 WIND SPEED (MEAN KNOTS) 8.1 9.3 6.4 6.4 9.2 7.8 6.4 6.0 4.6 5.3 3.9 4.0 6.4 FASTEST WIND DIRECTION 260 230 300 320 40 10 360 120 320 20 270 240 320 FASTEST WIND SPEED (KNOTS) 29 31 29 35 29 31 23 23 23 23 19 23 35 DAY 4 23 12 30 21 15 3 1 6 27 17 8 DAYS WITH SKY CLEAR (0-2)/8 26 22 18 16 30 29 27 29 29 31 27 20 304 DAYS WITH P.CLOUDY (3-6)/8 5 4 6 11 1 1 4 2 1 0 3 9 47 DAYS WITH CLOUDY (7-8)/8 0 2 7 3 0 0 0 0 0 0 0 2 14 DAYS WITH VISIBILITY =< 2 KM 1 3 1 0 0 3 8 8 0 0 1 2 27 DURATION OF SUNSHINE HOURS 279.2 241.7 226.2 194.2 ****** ****** ****** ****** ****** ****** 145.6 231.8 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 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 884.1 884.8 881.7 882.1 879.8 875.4 873.7 875.4 878.9 884.1 886.5 885.9 881.0 MAX. QFE PRESSURE IN HPA 890.2 890.1 888.5 887.7 884.9 880.6 877.9 879.1 886.1 890.7 891.7 891.9 891.9 DAY-HOUR 27- 6 8- 6 1- 6 1- 6 2- 6 2- 6 6- 6 31- 6 24- 6 27- 6 26- 6 2- 6 MIN. QFE PRESSURE IN HPA 877.7 878.5 877.5 874.3 874.6 871.1 870.3 870.5 873.7 878.9 882.5 881.1 870.3 DAY-HOUR 18-12 23-12 21-12 23-12 27-12 30-12 29-12 1-12 12-12 10-12 19-12 23-12 MEAN QNH PRESSURE IN HPA 1020.2 1021.0 1017.5 1017.9 1015.3 1010.4 1008.5 1010.4 1014.4 1020.2 1022.8 1022.2 1016.7 MAX. QNH PRESSURE IN HPA 1027.0 1026.9 1025.1 1024.2 1021.1 1016.2 1013.2 1014.6 1022.4 1027.6 1028.7 1028.9 1028.9 DAY-HOUR 27- 6 8- 6 1- 6 1- 6 2- 6 2- 6 6- 6 31- 6 24- 6 27- 6 26- 6 2- 6 MIN. QNH PRESSURE IN HPA 1013.0 1013.9 1012.8 1009.2 1009.5 1005.6 1004.7 1004.9 1008.5 1014.3 1018.4 1016.8 1004.7 DAY-HOUR 18-12 23-12 21-12 23-12 27-12 30-12 29-12 1-12 12-12 10-12 19-12 23-12 MEAN QFF PRESSURE IN HPA 1019.4 1019.3 1012.7 1010.7 1005.7 998.3 996.4 999.1 1004.6 1012.5 1017.5 1019.4 1009.6 MAX. QFF PRESSURE IN HPA 1027.9 1028.1 1023.6 1020.8 1017.7 1005.0 1002.8 1005.1 1015.9 1020.0 1025.0 1024.6 1028.1 DAY-HOUR 20- 3 7- 6 1- 3 1- 6 2- 6 2- 6 7- 3 31- 3 24- 3 25- 6 27- 3 26- 3 MIN. QFF PRESSURE IN HPA 1008.4 1008.1 1007.7 1000.6 997.9 992.0 991.4 992.8 997.5 1005.5 1011.4 1014.0 991.4 DAY-HOUR 5- 0 23-12 30- 0 23-12 29-12 27-12 29-12 1-12 12-12 9-12 21-12 9- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 883.5 884.2 881.0 881.6 879.5 875.4 873.8 875.4 878.8 883.7 886.2 885.5 880.7 MAX. QFE PRESSURE IN HPA 887.0 888.5 885.7 885.0 882.8 878.8 876.5 877.6 885.2 887.7 889.5 889.7 889.7 DAY 10 27 1 1 2 2 9 31 24 27 30 2 MIN. QFE PRESSURE IN HPA 877.8 879.4 878.0 875.0 875.9 873.6 871.3 872.7 875.5 880.5 882.6 882.1 871.3 DAY 5 13 19 30 28 30 27 2 13 10 4 24 MEAN QNH PRESSURE IN HPA 1019.5 1020.3 1016.7 1017.4 1015.0 1010.3 1008.6 1010.4 1014.2 1019.8 1022.5 1021.8 1016.4 MAX. QNH PRESSURE IN HPA 1023.4 1025.1 1022.0 1021.2 1018.7 1014.2 1011.6 1012.9 1021.4 1024.2 1026.2 1026.5 1026.5 DAY 10 27 1 1 2 2 9 31 24 27 30 2 MIN. QNH PRESSURE IN HPA 1013.1 1014.9 1013.3 1009.9 1011.0 1008.4 1005.8 1007.4 1010.5 1016.1 1018.5 1017.9 1005.8 DAY 5 13 19 30 28 30 27 2 13 10 4 24 MEAN QFF PRESSURE IN HPA 1018.4 1018.3 1011.9 1010.2 1005.8 998.5 996.2 999.2 1004.5 1012.2 1017.1 1018.8 1009.2 MAX. QFF PRESSURE IN HPA 1024.9 1025.5 1020.0 1016.8 1015.4 1002.6 1001.8 1003.2 1014.5 1017.6 1022.4 1021.9 1025.5 DAY 20 27 1 1 2 2 7 31 24 28 30 26 MIN. QFF PRESSURE IN HPA 1008.4 1011.5 1007.7 1000.8 999.1 995.7 993.6 995.3 999.3 1007.0 1011.8 1014.0 993.6 DAY 5 23 30 30 29 14 27 1 13 1 4 9 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 884.5 885.4 882.4 882.9 880.9 876.6 874.9 876.6 880.0 885.1 887.4 886.6 881.9 MAX. QFE PRESSURE IN HPA 887.8 888.9 887.3 886.9 884.7 880.1 877.7 878.6 885.6 889.3 891.2 890.9 891.2 DAY 10 9 1 1 5 2 7 31 24 27 27 3 MIN. QFE PRESSURE IN HPA 878.2 880.6 878.8 875.8 877.1 874.3 872.5 873.6 876.7 881.7 885.3 883.2 872.5 DAY 5 13 19 30 28 30 26 5 12 2 4 24 MEAN QNH PRESSURE IN HPA 1020.6 1021.6 1018.2 1018.8 1016.6 1011.8 1009.8 1011.8 1015.6 1021.3 1023.9 1023.0 1017.7 MAX. QNH PRESSURE IN HPA 1024.3 1025.6 1023.8 1023.3 1020.8 1015.7 1013.0 1014.0 1021.9 1026.0 1028.1 1027.8 1028.1 DAY 10 9 1 1 5 2 7 31 24 27 27 3 MIN. QNH PRESSURE IN HPA 1013.5 1016.2 1014.2 1010.8 1012.3 1009.2 1007.1 1008.4 1011.9 1017.5 1021.5 1019.2 1007.1 DAY 5 13 19 30 28 30 26 5 12 2 4 24 MEAN QFF PRESSURE IN HPA 1020.9 1020.8 1014.4 1012.2 1007.5 1000.1 998.0 1001.0 1006.6 1014.7 1019.8 1021.2 1011.4 MAX. QFF PRESSURE IN HPA 1027.9 1027.0 1023.6 1020.2 1017.6 1004.9 1002.8 1005.1 1015.9 1019.5 1025.0 1024.6 1027.9 DAY 20 7 1 1 2 2 7 31 24 26 27 26 MIN. QFF PRESSURE IN HPA 1009.8 1013.1 1009.8 1002.1 1001.3 996.9 995.2 997.6 1001.8 1009.6 1015.4 1017.0 995.2 DAY 5 23 30 30 28 30 13 1 12 1 4 9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 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 886.1 886.7 883.4 883.7 881.3 876.7 875.0 876.8 880.6 885.8 888.2 887.7 882.7 MAX. QFE PRESSURE IN HPA 890.2 890.1 888.5 887.7 884.9 880.6 877.9 879.1 886.1 890.7 891.7 891.9 891.9 DAY 27 8 1 1 2 2 6 31 24 27 26 2 MIN. QFE PRESSURE IN HPA 880.0 881.9 880.4 876.8 877.2 874.4 872.4 873.6 877.2 882.4 886.1 884.6 872.4 DAY 5 13 21 30 30 28 26 5 12 9 3 23 MEAN QNH PRESSURE IN HPA 1022.4 1023.1 1019.4 1019.7 1017.1 1011.8 1009.9 1012.0 1016.2 1022.1 1024.8 1024.3 1018.6 MAX. QNH PRESSURE IN HPA 1027.0 1026.9 1025.1 1024.2 1021.1 1016.2 1013.2 1014.6 1022.4 1027.6 1028.7 1028.9 1028.9 DAY 27 8 1 1 2 2 6 31 24 27 26 2 MIN. QNH PRESSURE IN HPA 1015.6 1017.7 1016.0 1012.0 1012.4 1009.3 1007.0 1008.4 1012.4 1018.3 1022.4 1020.7 1007.0 DAY 5 13 21 30 30 28 26 5 12 9 3 23 MEAN QFF PRESSURE IN HPA 1021.6 1021.4 1014.3 1012.3 1007.1 999.5 997.7 1000.4 1006.1 1013.7 1019.1 1021.2 1011.2 MAX. QFF PRESSURE IN HPA 1026.9 1028.1 1022.5 1020.8 1017.7 1005.0 1001.4 1003.5 1015.6 1020.0 1024.2 1024.4 1028.1 DAY 27 7 1 1 2 2 6 31 24 25 30 26 MIN. QFF PRESSURE IN HPA 1012.1 1012.2 1010.9 1004.2 999.6 996.7 994.9 996.2 1001.1 1008.6 1015.7 1015.8 994.9 DAY 5 23 29 30 30 30 26 5 12 5 3 8 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 883.7 884.9 881.8 882.2 879.7 875.4 873.4 875.1 878.5 883.7 885.8 885.3 880.8 MAX. QFE PRESSURE IN HPA 888.2 888.8 886.7 886.7 883.0 879.0 876.1 877.2 884.1 888.1 889.1 889.7 889.7 DAY 27 8 1 4 2 2 6 21 23 27 26 2 MIN. QFE PRESSURE IN HPA 878.1 880.2 878.4 875.3 876.0 872.6 871.2 871.9 874.9 880.4 883.5 881.8 871.2 DAY 5 14 21 30 29 30 26 1 5 9 3 23 MEAN QNH PRESSURE IN HPA 1019.8 1021.0 1017.5 1018.0 1015.3 1010.3 1008.2 1010.0 1013.9 1019.7 1022.0 1021.5 1016.4 MAX. QNH PRESSURE IN HPA 1024.8 1025.4 1023.1 1023.1 1018.9 1014.4 1011.2 1012.4 1020.2 1024.7 1025.8 1026.5 1026.5 DAY 27 8 1 4 2 2 6 21 23 27 26 2 MIN. QNH PRESSURE IN HPA 1013.4 1015.8 1013.8 1010.3 1011.1 1007.3 1005.7 1006.5 1009.8 1016.0 1019.5 1017.6 1005.7 DAY 5 14 21 30 29 30 26 1 5 9 3 23 MEAN QFF PRESSURE IN HPA 1018.3 1018.8 1012.4 1010.6 1005.4 998.1 995.8 998.3 1003.8 1011.5 1016.1 1018.2 1008.9 MAX. QFF PRESSURE IN HPA 1023.5 1026.1 1020.2 1018.1 1014.9 1002.9 999.2 1001.1 1013.1 1017.2 1021.1 1021.8 1026.1 DAY 27 8 1 4 2 2 6 21 24 27 30 2 MIN. QFF PRESSURE IN HPA 1009.6 1009.8 1008.7 1001.6 998.3 994.9 993.0 994.6 998.9 1005.9 1012.7 1014.6 993.0 DAY 5 23 29 30 29 28 29 1 5 5 3 5 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 882.6 883.3 880.3 880.6 878.2 873.9 872.0 873.7 877.1 882.6 884.8 884.4 879.5 MAX. QFE PRESSURE IN HPA 887.5 887.5 884.5 884.9 881.5 876.5 875.8 877.9 882.6 887.2 888.0 888.3 888.3 DAY 27 8 1 4 4 2 6 3 24 27 26 2 MIN. QFE PRESSURE IN HPA 877.7 878.5 877.5 874.3 874.6 871.1 870.3 870.5 873.7 878.9 882.5 881.1 870.3 DAY 18 23 21 23 27 30 29 1 12 10 19 23 MEAN QNH PRESSURE IN HPA 1018.5 1019.3 1015.8 1016.3 1013.5 1008.7 1006.6 1008.5 1012.3 1018.4 1021.0 1020.5 1015.0 MAX. QNH PRESSURE IN HPA 1024.0 1024.0 1020.6 1021.1 1017.3 1011.6 1010.8 1013.2 1018.5 1023.7 1024.5 1024.9 1024.9 DAY 27 8 1 4 4 2 6 3 24 27 26 2 MIN. QNH PRESSURE IN HPA 1013.0 1013.9 1012.8 1009.2 1009.5 1005.6 1004.7 1004.9 1008.5 1014.3 1018.4 1016.8 1004.7 DAY 18 23 21 23 27 30 29 1 12 10 19 23 MEAN QFF PRESSURE IN HPA 1017.5 1017.2 1011.1 1009.2 1004.2 996.9 994.6 997.5 1002.8 1010.8 1015.5 1017.5 1007.9 MAX. QFF PRESSURE IN HPA 1024.2 1024.7 1017.7 1016.3 1013.4 1000.4 1000.2 1003.1 1011.7 1017.3 1020.5 1021.5 1024.7 DAY 27 8 1 4 2 2 6 3 24 27 29 25 MIN. QFF PRESSURE IN HPA 1010.2 1008.1 1007.8 1000.6 997.9 992.0 991.4 992.8 997.5 1005.5 1011.4 1014.2 991.4 DAY 18 23 29 23 29 27 29 1 12 9 21 9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 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 883.8 884.3 881.0 881.2 878.7 874.3 872.7 874.2 878.1 883.4 886.0 885.6 880.3 MAX. QFE PRESSURE IN HPA 888.1 888.3 884.9 886.2 882.5 877.6 876.5 876.1 883.3 888.1 889.0 889.4 889.4 DAY 27 8 1 4 1 2 6 31 23 27 29 1 MIN. QFE PRESSURE IN HPA 878.7 879.9 878.2 874.7 875.3 871.7 870.8 871.8 874.7 879.7 884.0 881.9 870.8 DAY 24 14 21 23 29 30 23 1 5 5 3 23 MEAN QNH PRESSURE IN HPA 1019.8 1020.4 1016.7 1017.0 1014.1 1009.1 1007.4 1009.0 1013.4 1019.4 1022.3 1021.9 1015.9 MAX. QNH PRESSURE IN HPA 1024.7 1024.9 1021.1 1022.5 1018.4 1012.9 1011.6 1011.2 1019.3 1024.7 1025.7 1026.1 1026.1 DAY 27 8 1 4 1 2 6 31 23 27 29 1 MIN. QNH PRESSURE IN HPA 1014.1 1015.5 1013.5 1009.6 1010.3 1006.2 1005.2 1006.4 1009.6 1015.2 1020.1 1017.7 1005.2 DAY 24 14 21 23 29 30 23 1 5 5 3 23 MEAN QFF PRESSURE IN HPA 1020.1 1019.5 1012.8 1010.3 1004.9 997.6 995.7 998.3 1004.4 1012.8 1018.2 1020.1 1009.6 MAX. QFF PRESSURE IN HPA 1026.4 1026.3 1020.1 1017.9 1014.4 1002.1 1001.3 1002.0 1012.7 1018.7 1023.1 1024.0 1026.4 DAY 27 7 1 4 1 2 6 31 24 27 29 25 MIN. QFF PRESSURE IN HPA 1012.5 1010.7 1008.1 1001.0 998.4 994.6 993.3 995.8 999.8 1007.0 1015.1 1016.4 993.3 DAY 4 23 29 23 29 28 23 15 5 5 3 7 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 884.7 885.2 882.2 882.6 880.2 875.6 874.3 875.8 879.5 884.5 886.9 886.3 881.5 MAX. QFE PRESSURE IN HPA 889.0 889.3 886.8 886.8 883.9 879.6 877.7 877.4 885.0 888.7 890.0 890.0 890.0 DAY 27 8 31 4 4 2 9 20 23 26 30 1 MIN. QFE PRESSURE IN HPA 879.4 881.0 879.5 877.3 877.0 873.2 872.0 873.3 876.2 881.0 884.5 883.1 872.0 DAY 24 14 18 23 27 29 23 1 5 10 3 23 MEAN QNH PRESSURE IN HPA 1020.8 1021.4 1018.1 1018.5 1015.8 1010.6 1009.1 1010.8 1015.0 1020.6 1023.3 1022.7 1017.2 MAX. QNH PRESSURE IN HPA 1025.7 1026.0 1023.2 1023.2 1019.9 1015.1 1013.0 1012.6 1021.2 1025.3 1026.8 1026.8 1026.8 DAY 27 8 31 4 4 2 9 20 23 26 30 1 MIN. QNH PRESSURE IN HPA 1014.9 1016.7 1015.0 1012.5 1012.2 1007.9 1006.6 1008.0 1011.3 1016.7 1020.6 1019.0 1006.6 DAY 24 14 18 23 27 29 23 1 5 10 3 23 MEAN QFF PRESSURE IN HPA 1019.9 1019.6 1013.0 1010.9 1005.7 998.3 996.8 999.2 1004.7 1012.2 1017.6 1019.6 1009.8 MAX. QFF PRESSURE IN HPA 1025.7 1026.8 1019.6 1018.2 1015.7 1003.7 1002.0 1001.7 1014.0 1018.2 1022.2 1023.3 1026.8 DAY 19 7 31 3 1 2 6 20 23 27 29 25 MIN. QFF PRESSURE IN HPA 1012.0 1010.9 1009.6 1003.5 999.3 995.0 994.0 996.4 999.7 1006.4 1013.3 1015.6 994.0 DAY 4 23 29 23 28 30 23 4 5 5 3 7 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 884.1 884.8 881.7 881.9 879.6 875.3 874.0 875.7 879.0 884.1 886.5 885.8 881.0 MAX. QFE PRESSURE IN HPA 887.7 888.8 886.3 886.0 883.6 878.8 877.3 877.6 884.8 888.2 889.7 889.7 889.7 DAY 27 8 31 3 4 1 8 30 23 26 30 1 MIN. QFE PRESSURE IN HPA 879.0 880.5 878.6 876.6 875.9 873.1 871.3 873.3 876.0 880.8 883.8 882.6 871.3 DAY 24 12 29 29 27 29 26 4 5 5 3 23 MEAN QNH PRESSURE IN HPA 1020.2 1020.9 1017.5 1017.7 1015.1 1010.3 1008.8 1010.7 1014.4 1020.1 1022.9 1022.1 1016.7 MAX. QNH PRESSURE IN HPA 1024.2 1025.4 1022.6 1022.3 1019.6 1014.2 1012.5 1012.9 1021.0 1024.8 1026.5 1026.5 1026.5 DAY 27 8 31 3 4 1 8 30 23 26 30 1 MIN. QNH PRESSURE IN HPA 1014.4 1016.1 1014.0 1011.7 1011.0 1007.8 1005.8 1008.0 1011.1 1016.5 1019.8 1018.5 1005.8 DAY 24 12 29 29 27 29 26 4 5 5 3 23 MEAN QFF PRESSURE IN HPA 1018.6 1018.6 1012.2 1010.2 1005.1 997.8 996.2 998.8 1004.2 1012.0 1017.0 1018.7 1009.1 MAX. QFF PRESSURE IN HPA 1024.6 1025.6 1018.7 1017.4 1015.3 1002.4 1000.4 1001.9 1013.9 1017.5 1021.9 1022.0 1025.6 DAY 19 8 31 3 1 1 6 30 23 27 26 25 MIN. QFF PRESSURE IN HPA 1009.5 1011.4 1007.8 1002.2 998.6 994.8 993.1 996.2 999.4 1007.1 1012.4 1014.8 993.1 DAY 4 23 29 29 28 30 12 1 12 5 3 6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 12.0 12.8 17.0 23.7 29.3 32.2 32.7 31.3 27.5 22.0 16.1 12.1 22.4 MINIMUN AIR TEMPERATURE (C) 6.7 7.5 9.3 15.5 21.1 23.8 25.0 23.4 18.0 13.0 7.1 5.3 14.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 2 16 27 30 28 4 0 0 0 107 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 1 1 DAYS WITH FREEZING MIN.<= 0 0 1 0 0 0 0 0 0 0 0 0 3 4 TEMPERATURE RECORDS LOWEST(C) 1.2 -0.2 3.0 9.5 17.0 18.4 20.4 19.6 11.4 6.4 2.0 -4.4 -4.4 DAY 27 2 22 8 3 7 24 17 30 21 26 30 MAXIMUM AIR TEMPERATURE (C) 18.0 19.0 24.7 31.2 36.4 39.3 39.8 38.9 35.6 29.6 24.4 19.7 29.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 4 19 31 30 31 31 30 16 0 0 192 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 23.6 26.7 32.8 35.4 41.2 42.8 42.0 40.6 38.0 34.2 29.4 24.0 42.8 DAY 10 4 15 15 27 29 2 20 2 5 11 6 DIF. BETWEEN (MAX.-MIN.) (C) 11.3 11.5 15.4 15.7 15.3 15.5 14.8 15.5 17.6 16.6 17.3 14.4 15.1 MEAN DAILY TEMP. (MDT) (C) 12.3 13.2 17.0 23.4 28.8 31.5 32.4 31.2 26.8 21.3 15.7 12.5 22.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 3.7 86.2 240.9 315.7 352.8 315.5 174.4 37.8 0.0 0.0 1527.1 HEATING DEG. DAYS(BASE 18 0C) 175.8 134.0 61.7 1.5 0.0 0.0 0.0 0.0 0.0 6.1 72.3 170.5 621.8 DEWPOINT (MEAN C) 2.2 3.2 -1.9 -1.1 1.7 3.3 5.6 7.7 1.0 -3.6 -3.2 -1.0 1.2 MIXING RATIO (G/KG) 5.42 5.76 4.09 4.29 5.58 6.20 7.27 8.53 5.53 3.74 3.69 4.54 5.39 VAPOUR PRESSURE (HPA) 7.64 8.09 5.76 6.03 7.79 8.61 10.05 11.80 7.71 5.28 5.23 6.40 7.53 SATURATION DEF. (HPA) 6.90 7.30 14.98 24.92 34.45 41.16 40.91 35.50 30.93 22.73 14.28 8.69 23.56 RELATIVE HUMIDITY (MEAN %) 56 56 31 24 21 19 22 28 23 21 30 47 32 RELATIVE HUMIDITY (MAX. %) 79 82 51 41 38 37 38 50 50 39 48 72 52 RELATIVE HUMIDITY (MIN. %) 33 34 17 12 10 8 11 11 8 10 17 25 16 RELATIVE HUMIDITY (MEAN% 03UTC) 74 75 47 34 30 25 29 41 31 29 45 65 44 RELATIVE HUMIDITY (MEAN% 09UTC) 39 39 19 14 11 10 12 15 10 15 18 27 19 RELATIVE HUMIDITY (MEAN% 15UTC) 49 48 25 18 17 13 16 21 13 15 27 40 25 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 25.2 52.4 0.2 4.7 5.4 0.4 0.0 0.1 0.0 0.0 2.6 11.3 102.3 DAYS WITH PRECIPITATION >=10 1 2 0 0 0 0 0 0 0 0 0 1 4 DAYS WITH PRECIPITATION >= 5 2 2 0 0 0 0 0 0 0 0 0 1 5 DAYS WITH PRECIPITATION >= 1 3 5 0 1 1 0 0 0 0 0 1 2 13 DAYS WITH PRECIPITATION 6 6 1 2 4 1 0 1 0 0 1 2 24 GREATEST DAILY PRECIPITATION 11.0 25.0 0.2 4.0 4.0 0.4 0.0 0.1 0.0 0.0 2.6 10.3 25.0 DAY 5 11 30 1 2 22 ** 7 ** ** 2 11 DAY WITH THUNDER STORM 0 3 2 0 10 5 0 4 0 0 0 2 26 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 6 4 11 14 12 11 14 3 1 4 1 4 85 WIND DIRECTION (PREVAILING) 225 360 45 270 360 360 45 45 45 45 45 360 45 PREVAILING WIND SPEED(KNOTS) 10.2 9.6 11.5 11.4 14.8 12.1 11.1 10.4 9.5 10.6 8.4 11.1 10.4 PREVAILING WIND PERCENT 14.5 11.2 19.0 20.0 29.4 19.6 19.0 13.3 22.1 22.2 16.3 15.3 14.4 CALMS PERCENT OF WIND 39.5 41.1 33.9 35.4 34.3 41.3 37.9 44.8 45.8 36.3 51.7 44.0 40.4 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 301 339 8 273 3 358 12 40 26 20 9 329 2 VECTOR WIND MAGNITUDE(KNOTS) 1.1 0.9 2.7 2.9 4.9 4.0 4.0 2.3 2.9 3.6 2.2 1.0 2.3 WIND STEADINESES (MEAN %) 19.3 16.4 43.5 45.3 62.8 69.0 63.5 51.1 70.7 66.7 64.7 20.4 41.8 WIND SPEED (MEAN KNOTS) 5.7 5.5 6.2 6.4 7.8 5.8 6.3 4.5 4.1 5.4 3.4 4.9 5.5 FASTEST WIND DIRECTION 30 120 260 270 330 360 20 40 30 20 20 240 330 FASTEST WIND SPEED (KNOTS) 23 23 25 23 31 29 23 29 23 29 16 23 31 DAY 27 11 25 5 18 5 2 7 6 6 15 22 DAYS WITH SKY CLEAR (0-2)/8 21 17 27 22 28 28 29 27 30 31 29 26 315 DAYS WITH P.CLOUDY (3-6)/8 8 8 2 7 3 2 2 4 0 0 0 4 40 DAYS WITH CLOUDY (7-8)/8 2 3 2 1 0 0 0 0 0 0 1 1 10 DAYS WITH VISIBILITY =< 2 KM 4 1 2 2 4 2 8 1 1 1 0 1 27 DURATION OF SUNSHINE HOURS 222.2 ****** 290.8 293.1 340.1 245.8 ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 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 885.4 882.4 883.4 880.3 878.0 874.3 872.8 875.2 878.2 884.4 886.6 885.7 880.6 MAX. QFE PRESSURE IN HPA 890.0 891.0 890.0 885.9 882.0 879.6 877.2 878.9 883.8 891.0 892.5 893.5 893.5 DAY-HOUR 9- 6 1- 6 10- 6 3- 6 16- 6 2- 6 15- 6 16- 6 27- 6 19- 6 24- 6 5- 6 MIN. QFE PRESSURE IN HPA 879.1 873.3 876.7 874.8 873.1 868.9 868.4 869.4 873.2 878.9 879.5 879.8 868.4 DAY-HOUR 2-12 16-15 3-12 30-12 13-12 30-12 2-12 13-12 2-12 1-12 1-12 25-12 MEAN QNH PRESSURE IN HPA 1021.6 1018.3 1019.4 1015.8 1013.3 1009.2 1007.5 1010.2 1013.5 1020.6 1022.9 1022.0 1016.2 MAX. QNH PRESSURE IN HPA 1026.8 1027.9 1026.8 1022.2 1017.8 1015.1 1012.4 1014.3 1019.8 1027.9 1029.6 1030.7 1030.7 DAY-HOUR 9- 6 1- 6 10- 6 3- 6 16- 6 2- 6 15- 6 16- 6 27- 6 19- 6 24- 6 5- 6 MIN. QNH PRESSURE IN HPA 1014.6 1008.0 1011.9 1009.7 1007.8 1003.1 1002.5 1003.7 1007.9 1014.3 1015.0 1015.3 1002.5 DAY-HOUR 2-12 16-15 3-12 30-12 13-12 30-12 2-12 13-12 2-12 1-12 1-12 25-12 MEAN QFF PRESSURE IN HPA 1019.0 1015.2 1014.4 1007.7 1002.5 997.1 995.0 998.2 1003.5 1013.3 1018.5 1019.4 1008.6 MAX. QFF PRESSURE IN HPA 1026.9 1028.1 1022.8 1017.1 1009.2 1004.9 1000.3 1003.4 1011.4 1022.7 1026.2 1029.3 1029.3 DAY-HOUR 27- 6 1- 6 22- 6 1-15 3- 3 2- 6 23- 3 31- 6 27- 3 19- 6 25- 3 28-18 MIN. QFF PRESSURE IN HPA 1011.0 1004.5 1005.3 998.8 996.0 990.5 988.8 992.4 996.8 1006.5 1008.3 1011.3 988.8 DAY-HOUR 2-12 16-12 25-21 30-12 27-12 30-12 2-12 13-12 2-12 1-12 1- 0 26- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 884.8 882.1 882.9 879.8 877.8 874.5 873.0 875.2 878.1 884.3 886.2 885.2 880.3 MAX. QFE PRESSURE IN HPA 888.7 888.4 887.1 883.4 880.5 877.5 875.8 877.2 882.0 888.6 890.3 891.5 891.5 DAY 27 1 11 3 16 2 15 3 26 19 23 5 MIN. QFE PRESSURE IN HPA 880.8 875.4 876.7 875.1 874.6 870.8 870.2 871.3 874.9 881.0 880.4 880.6 870.2 DAY 2 24 28 30 28 30 4 13 3 2 1 26 MEAN QNH PRESSURE IN HPA 1021.0 1017.9 1018.8 1015.3 1013.1 1009.4 1007.7 1010.1 1013.4 1020.4 1022.5 1021.5 1015.9 MAX. QNH PRESSURE IN HPA 1025.3 1025.0 1023.5 1019.4 1016.1 1012.8 1010.8 1012.4 1017.8 1025.2 1027.1 1028.5 1028.5 DAY 27 1 11 3 16 2 15 3 26 19 23 5 MIN. QNH PRESSURE IN HPA 1016.5 1010.4 1011.9 1010.1 1009.5 1005.2 1004.6 1005.8 1009.8 1016.7 1016.0 1016.2 1004.6 DAY 2 24 28 30 28 30 4 13 3 2 1 26 MEAN QFF PRESSURE IN HPA 1018.0 1014.5 1013.8 1007.3 1002.5 997.4 995.2 998.1 1003.5 1013.3 1018.1 1018.6 1008.4 MAX. QFF PRESSURE IN HPA 1023.7 1024.9 1020.0 1014.2 1006.1 1002.7 999.3 1000.6 1009.4 1019.3 1024.4 1025.5 1025.5 DAY 27 1 23 2 16 2 15 17 26 20 25 5 MIN. QFF PRESSURE IN HPA 1012.6 1006.2 1006.3 999.0 997.3 992.1 990.4 994.3 998.0 1008.7 1008.3 1011.3 990.4 DAY 2 24 28 30 28 30 4 1 3 2 1 26 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 885.9 883.2 884.2 881.2 879.1 875.7 874.0 876.4 879.4 885.6 887.4 886.5 881.5 MAX. QFE PRESSURE IN HPA 889.2 889.6 888.1 885.5 881.9 879.2 876.6 878.4 883.3 890.3 891.4 892.7 892.7 DAY 27 1 11 3 16 2 14 29 27 19 24 5 MIN. QFE PRESSURE IN HPA 881.5 877.1 877.9 876.4 876.1 872.1 871.0 872.0 876.1 882.4 881.9 882.1 871.0 DAY 2 24 28 30 28 30 1 13 3 1 1 26 MEAN QNH PRESSURE IN HPA 1022.2 1019.1 1020.3 1016.9 1014.5 1010.7 1008.9 1011.5 1014.9 1021.8 1023.9 1022.8 1017.3 MAX. QNH PRESSURE IN HPA 1025.9 1026.3 1024.7 1021.7 1017.7 1014.7 1011.7 1013.8 1019.3 1027.1 1028.4 1029.8 1029.8 DAY 27 1 11 3 16 2 14 29 27 19 24 5 MIN. QNH PRESSURE IN HPA 1017.3 1012.3 1013.2 1011.5 1011.2 1006.7 1005.5 1006.6 1011.2 1018.3 1017.7 1017.9 1005.5 DAY 2 24 28 30 28 30 1 13 3 1 1 26 MEAN QFF PRESSURE IN HPA 1020.3 1016.8 1016.3 1009.4 1004.2 999.0 996.7 1000.1 1005.7 1015.7 1020.8 1021.3 1010.5 MAX. QFF PRESSURE IN HPA 1026.2 1027.1 1022.2 1016.2 1009.2 1004.7 1000.3 1003.3 1011.4 1022.3 1026.2 1028.2 1028.2 DAY 27 1 23 3 3 2 23 31 27 21 25 5 MIN. QFF PRESSURE IN HPA 1014.1 1009.0 1008.2 1001.6 999.5 993.6 992.1 996.1 1000.5 1010.4 1011.2 1014.0 992.1 DAY 17 24 28 30 28 30 4 13 3 2 1 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 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 887.3 884.4 885.2 881.9 879.4 875.7 874.0 876.6 879.9 886.3 888.3 887.6 882.2 MAX. QFE PRESSURE IN HPA 890.0 891.0 890.0 885.9 882.0 879.6 877.2 878.9 883.8 891.0 892.5 893.5 893.5 DAY 9 1 10 3 16 2 15 16 27 19 24 5 MIN. QFE PRESSURE IN HPA 882.4 878.6 879.7 877.2 876.2 871.6 871.4 871.8 876.2 882.8 882.4 884.0 871.4 DAY 2 24 28 30 28 30 1 13 3 1 1 26 MEAN QNH PRESSURE IN HPA 1023.8 1020.5 1021.4 1017.7 1014.9 1010.7 1008.8 1011.8 1015.4 1022.6 1024.9 1024.1 1018.0 MAX. QNH PRESSURE IN HPA 1026.8 1027.9 1026.8 1022.2 1017.8 1015.1 1012.4 1014.3 1019.8 1027.9 1029.6 1030.7 1030.7 DAY 9 1 10 3 16 2 15 16 27 19 24 5 MIN. QNH PRESSURE IN HPA 1018.3 1014.0 1015.2 1012.4 1011.3 1006.1 1005.9 1006.4 1011.3 1018.7 1018.3 1020.1 1005.9 DAY 2 24 28 30 28 30 1 13 3 1 1 26 MEAN QFF PRESSURE IN HPA 1021.3 1017.5 1016.2 1009.2 1003.8 998.3 996.1 999.6 1004.8 1014.6 1019.7 1021.3 1010.2 MAX. QFF PRESSURE IN HPA 1026.9 1028.1 1022.8 1015.9 1008.1 1004.9 999.9 1003.4 1010.2 1022.7 1025.1 1026.9 1028.1 DAY 27 1 22 2 3 2 15 31 27 19 24 5 MIN. QFF PRESSURE IN HPA 1014.9 1009.8 1009.9 1001.8 998.5 992.4 992.3 994.3 999.6 1009.5 1010.3 1015.7 992.3 DAY 2 24 26 30 28 30 2 13 3 2 1 26 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 884.9 882.3 883.3 880.3 877.8 874.1 872.4 874.8 877.8 883.9 886.1 885.2 880.2 MAX. QFE PRESSURE IN HPA 888.0 889.0 888.2 884.1 880.3 877.6 875.8 877.0 881.9 888.8 890.3 891.5 891.5 DAY 6 1 10 3 16 2 15 31 27 19 24 5 MIN. QFE PRESSURE IN HPA 879.6 875.8 877.7 876.2 874.9 870.3 869.6 870.3 874.4 880.7 880.4 881.8 869.6 DAY 2 16 3 30 28 30 3 13 3 1 1 26 MEAN QNH PRESSURE IN HPA 1021.1 1018.1 1019.3 1015.9 1013.1 1008.9 1007.0 1009.8 1013.1 1020.0 1022.4 1021.4 1015.8 MAX. QNH PRESSURE IN HPA 1024.5 1025.7 1024.8 1020.2 1015.9 1012.9 1010.8 1012.2 1017.7 1025.4 1027.1 1028.5 1028.5 DAY 6 1 10 3 16 2 15 31 27 19 24 5 MIN. QNH PRESSURE IN HPA 1015.1 1010.8 1013.0 1011.3 1009.8 1004.7 1003.9 1004.7 1009.3 1016.4 1016.0 1017.6 1003.9 DAY 2 16 3 30 28 30 3 13 3 1 1 26 MEAN QFF PRESSURE IN HPA 1018.0 1014.7 1013.8 1007.4 1002.0 996.6 994.3 997.5 1002.7 1012.2 1017.2 1018.3 1007.9 MAX. QFF PRESSURE IN HPA 1023.8 1025.4 1020.1 1015.0 1005.5 1002.8 998.4 1001.4 1008.6 1018.8 1022.0 1024.7 1025.4 DAY 27 1 22 1 16 1 15 31 27 19 25 5 MIN. QFF PRESSURE IN HPA 1011.0 1007.3 1007.2 1000.7 997.4 991.5 990.2 992.7 997.8 1007.6 1008.8 1012.6 990.2 DAY 2 24 25 30 27 29 3 13 4 3 1 26 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 883.8 880.7 881.8 878.8 876.2 872.6 871.1 873.2 876.4 882.8 885.1 884.1 878.9 MAX. QFE PRESSURE IN HPA 886.9 887.5 885.8 884.1 878.7 875.6 874.2 876.0 879.9 887.2 889.2 890.3 890.3 DAY 6 1 10 1 18 9 15 31 26 19 23 5 MIN. QFE PRESSURE IN HPA 879.1 873.4 876.7 874.8 873.1 868.9 868.4 869.4 873.2 878.9 879.5 879.8 868.4 DAY 2 16 3 30 13 30 2 13 2 1 1 25 MEAN QNH PRESSURE IN HPA 1019.8 1016.4 1017.6 1014.2 1011.3 1007.3 1005.5 1007.9 1011.5 1018.7 1021.3 1020.2 1014.3 MAX. QNH PRESSURE IN HPA 1023.3 1024.0 1022.1 1020.2 1014.1 1010.6 1009.1 1011.1 1015.5 1023.7 1025.9 1027.1 1027.1 DAY 6 1 10 1 18 9 15 31 26 19 23 5 MIN. QNH PRESSURE IN HPA 1014.6 1008.2 1011.9 1009.7 1007.8 1003.1 1002.5 1003.7 1007.9 1014.3 1015.0 1015.3 1002.5 DAY 2 16 3 30 13 30 2 13 2 1 1 25 MEAN QFF PRESSURE IN HPA 1016.9 1013.0 1012.5 1006.2 1000.8 995.5 993.2 996.2 1001.8 1011.7 1016.9 1017.4 1006.8 MAX. QFF PRESSURE IN HPA 1022.6 1023.6 1019.2 1016.8 1004.4 1000.4 997.4 1000.6 1007.0 1018.6 1022.5 1025.2 1025.2 DAY 27 1 23 1 18 4 15 31 26 21 24 28 MIN. QFF PRESSURE IN HPA 1011.0 1004.5 1007.4 998.8 996.0 990.5 988.8 992.4 996.8 1006.5 1008.4 1012.1 988.8 DAY 2 16 27 30 27 30 2 13 2 1 1 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 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 885.0 881.6 882.6 879.5 877.1 873.2 871.7 874.2 877.1 883.7 886.2 885.3 879.8 MAX. QFE PRESSURE IN HPA 887.8 887.8 886.9 884.4 881.4 877.9 874.7 877.0 880.9 887.7 890.2 891.2 891.2 DAY 6 1 10 1 2 8 15 10 26 19 22 5 MIN. QFE PRESSURE IN HPA 880.8 873.3 878.0 875.9 873.7 869.4 869.1 871.0 873.8 880.2 880.1 880.2 869.1 DAY 2 16 27 15 13 30 3 13 3 1 1 25 MEAN QNH PRESSURE IN HPA 1021.2 1017.4 1018.5 1015.0 1012.3 1007.9 1006.2 1009.0 1012.3 1019.7 1022.5 1021.5 1015.3 MAX. QNH PRESSURE IN HPA 1024.3 1024.3 1023.3 1020.5 1017.1 1013.2 1009.6 1012.2 1016.6 1024.2 1027.0 1028.1 1028.1 DAY 6 1 10 1 2 8 15 10 26 19 22 5 MIN. QNH PRESSURE IN HPA 1016.5 1008.0 1013.3 1011.0 1008.5 1003.7 1003.3 1005.5 1008.6 1015.8 1015.7 1015.8 1003.3 DAY 2 16 27 15 13 30 3 13 3 1 1 25 MEAN QFF PRESSURE IN HPA 1019.3 1015.0 1014.5 1007.5 1002.0 996.2 994.2 997.7 1003.1 1013.5 1019.3 1020.0 1008.5 MAX. QFF PRESSURE IN HPA 1025.2 1024.5 1020.4 1017.1 1008.2 1002.7 997.8 1001.9 1008.8 1020.1 1025.0 1027.4 1027.4 DAY 31 1 1 1 2 8 15 10 30 21 24 28 MIN. QFF PRESSURE IN HPA 1013.2 1005.3 1008.8 1001.6 997.0 990.6 990.3 994.7 998.2 1007.8 1009.7 1013.8 990.3 DAY 16 16 27 30 27 30 3 13 3 2 1 25 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 886.0 882.8 883.9 880.7 878.5 874.7 873.4 875.9 878.7 884.8 886.9 886.1 881.0 MAX. QFE PRESSURE IN HPA 889.6 888.0 888.9 884.3 881.4 877.9 876.0 878.2 882.2 888.6 890.8 891.5 891.5 DAY 26 1 10 3 7 8 15 3 26 19 22 4 MIN. QFE PRESSURE IN HPA 880.9 876.6 878.6 876.7 875.4 870.9 870.5 872.1 875.3 881.2 881.1 881.8 870.5 DAY 2 23 25 15 27 30 3 12 4 31 1 25 MEAN QNH PRESSURE IN HPA 1022.3 1018.7 1020.0 1016.4 1013.9 1009.6 1008.1 1010.9 1014.1 1020.9 1023.3 1022.5 1016.7 MAX. QNH PRESSURE IN HPA 1026.3 1024.5 1025.6 1020.4 1017.1 1013.2 1011.1 1013.5 1018.0 1025.2 1027.7 1028.5 1028.5 DAY 26 1 10 3 7 8 15 3 26 19 22 4 MIN. QNH PRESSURE IN HPA 1016.6 1011.7 1014.0 1011.9 1010.4 1005.3 1004.9 1006.7 1010.3 1016.9 1016.8 1017.6 1004.9 DAY 2 23 25 15 27 30 3 12 4 31 1 25 MEAN QFF PRESSURE IN HPA 1019.7 1015.6 1014.7 1007.8 1002.7 997.0 995.4 998.6 1003.4 1012.9 1018.2 1019.7 1008.8 MAX. QFF PRESSURE IN HPA 1025.4 1024.7 1021.4 1014.9 1007.0 1002.9 998.6 1002.0 1008.6 1020.8 1023.4 1029.3 1029.3 DAY 31 1 10 1 7 1 15 31 30 19 24 28 MIN. QFF PRESSURE IN HPA 1013.2 1007.1 1007.2 1001.3 997.1 991.4 991.5 994.6 998.3 1007.8 1009.6 1013.4 991.4 DAY 2 23 25 29 27 30 3 12 4 5 1 25 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 885.5 882.5 883.5 880.0 877.9 874.3 873.1 875.5 878.3 884.4 886.5 885.6 880.6 MAX. QFE PRESSURE IN HPA 888.9 887.1 888.0 883.8 880.4 877.5 876.0 877.6 882.0 888.6 890.3 891.5 891.5 DAY 26 1 10 2 2 1 15 3 25 18 22 4 MIN. QFE PRESSURE IN HPA 881.3 876.1 877.2 875.4 874.9 870.9 870.2 872.0 874.9 880.4 881.2 881.3 870.2 DAY 2 23 25 29 27 30 3 12 3 31 1 27 MEAN QNH PRESSURE IN HPA 1021.7 1018.4 1019.5 1015.6 1013.2 1009.2 1007.9 1010.5 1013.7 1020.5 1022.8 1021.8 1016.2 MAX. QNH PRESSURE IN HPA 1025.6 1023.5 1024.5 1019.8 1016.0 1012.8 1011.1 1012.9 1017.8 1025.2 1027.1 1028.5 1028.5 DAY 26 1 10 2 2 1 15 3 25 18 22 4 MIN. QNH PRESSURE IN HPA 1017.0 1011.2 1012.4 1010.4 1009.8 1005.3 1004.6 1006.6 1009.8 1016.0 1016.9 1017.0 1004.6 DAY 2 23 25 29 27 30 3 12 3 31 1 27 MEAN QFF PRESSURE IN HPA 1018.6 1014.9 1013.8 1007.0 1002.0 996.6 994.9 997.9 1003.1 1012.7 1017.8 1018.6 1008.2 MAX. QFF PRESSURE IN HPA 1024.7 1023.3 1020.9 1013.9 1006.2 1002.8 998.8 1001.1 1008.5 1020.3 1023.6 1026.8 1026.8 DAY 31 1 22 2 2 1 14 31 30 19 24 28 MIN. QFF PRESSURE IN HPA 1012.9 1006.5 1005.3 999.4 997.4 991.7 990.3 994.1 998.2 1007.5 1010.0 1011.6 990.3 DAY 2 23 25 29 27 30 3 12 2 5 1 27 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION SARAVAN (40878) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 20 N LONGITUDE 62 20 E DATA PROCESSING CENTER ELEVATION 1195.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 11.1 11.6 16.5 23.3 28.1 31.7 32.9 30.7 26.9 20.9 15.9 13.0 21.9 MINIMUN AIR TEMPERATURE (C) 4.6 5.6 11.2 15.7 20.6 23.1 24.2 21.7 17.9 11.9 9.0 6.4 14.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 2 16 23 31 21 3 0 0 0 96 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 7 3 0 0 0 0 0 0 0 0 0 3 13 TEMPERATURE RECORDS LOWEST(C) -2.8 -1.6 4.2 11.0 15.6 18.0 21.8 17.2 12.4 5.6 3.4 -1.2 -2.8 DAY 9 17 19 20 8 27 3 25 29 16 30 25 MAXIMUM AIR TEMPERATURE (C) 17.5 17.7 22.3 30.3 35.4 38.8 40.0 38.7 34.8 28.9 22.8 20.0 28.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 1 19 31 30 31 31 26 11 0 0 180 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 26.6 24.0 30.2 35.2 40.0 43.4 43.0 41.2 38.8 32.8 29.2 27.7 43.4 DAY 22 4 25 26 31 8 10 7 6 5 1 10 DIF. BETWEEN (MAX.-MIN.) (C) 12.9 12.1 11.1 14.6 14.8 15.7 15.8 17.0 16.9 17.0 13.8 13.6 14.6 MEAN DAILY TEMP. (MDT) (C) 11.0 11.6 16.7 23.0 28.0 30.9 32.1 30.2 26.3 20.4 15.9 13.2 21.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 11.6 72.1 217.3 298.5 344.1 284.7 162.9 14.5 0.0 0.0 1406.0 HEATING DEG. DAYS(BASE 18 0C) 215.7 178.0 74.5 0.0 0.0 0.0 0.0 0.0 0.0 4.5 65.1 149.1 686.7 DEWPOINT (MEAN C) -0.9 -2.5 4.2 0.4 4.6 1.4 5.1 4.4 0.0 -4.1 1.2 -0.4 1.1 MIXING RATIO (G/KG) 4.59 4.09 6.15 4.73 6.63 5.29 7.00 6.72 5.08 3.38 5.31 4.50 5.29 VAPOUR PRESSURE (HPA) 6.47 5.77 8.63 6.64 9.24 7.36 9.69 9.32 7.10 4.78 7.49 6.36 7.41 SATURATION DEF. (HPA) 7.55 8.64 11.14 23.22 30.06 41.12 41.79 36.75 30.45 21.42 11.42 9.56 22.76 RELATIVE HUMIDITY (MEAN %) 48 43 50 25 27 17 21 23 22 20 45 44 32 RELATIVE HUMIDITY (MAX. %) 76 74 78 41 46 32 37 44 39 33 73 68 53 RELATIVE HUMIDITY (MIN. %) 28 23 28 14 12 8 10 9 9 12 23 24 17 RELATIVE HUMIDITY (MEAN% 03UTC) 71 67 71 40 40 25 30 31 32 29 66 63 47 RELATIVE HUMIDITY (MEAN% 09UTC) 31 30 33 15 13 10 13 11 11 13 27 27 20 RELATIVE HUMIDITY (MEAN% 15UTC) 41 33 45 19 19 11 13 15 14 17 37 35 25 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 9.3 30.0 58.4 0.2 2.0 0.0 0.0 0.0 2.3 0.0 19.5 0.4 122.1 DAYS WITH PRECIPITATION >=10 0 1 2 0 0 0 0 0 0 0 0 0 3 DAYS WITH PRECIPITATION >= 5 1 2 4 0 0 0 0 0 0 0 2 0 9 DAYS WITH PRECIPITATION >= 1 3 2 5 0 1 0 0 0 1 0 4 0 16 DAYS WITH PRECIPITATION 5 2 8 2 1 0 0 0 2 0 6 1 27 GREATEST DAILY PRECIPITATION 5.0 22.0 25.2 0.2 2.0 0.0 0.0 0.0 2.0 0.0 8.0 0.4 25.2 DAY 27 9 1 30 4