STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 16.5 18.9 21.1 25.7 29.7 33.0 34.9 33.8 32.0 27.9 22.5 18.3 26.2 MINIMUN AIR TEMPERATURE (C) 12.7 15.0 17.8 21.1 24.0 28.9 30.0 30.3 28.6 22.8 16.7 11.9 21.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 16 29 30 31 31 30 25 1 0 193 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) 8.4 10.4 13.4 16.2 19.8 25.8 27.0 29.0 25.6 14.6 12.0 6.4 6.4 DAY 16 8 28 1 1 30 1 12 21 23 25 5 MAXIMUM AIR TEMPERATURE (C) 21.0 23.9 25.2 30.9 36.0 37.9 40.9 38.7 36.2 33.7 29.5 25.4 31.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 1 20 31 30 31 31 30 31 16 0 221 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 25.6 27.2 30.6 34.8 41.4 45.6 45.8 41.6 39.6 37.0 33.0 27.6 45.8 DAY 8 3 31 16 8 17 20 2 28 2 6 2 DIF. BETWEEN (MAX.-MIN.) (C) 8.3 8.9 7.4 9.8 12.0 9.0 10.9 8.4 7.6 10.9 12.8 13.5 10.0 MEAN DAILY TEMP. (MDT) (C) 16.8 19.4 21.5 26.0 30.0 33.4 35.5 34.5 32.4 28.2 23.1 18.6 26.6 COOLING DEG. DAYS(BASE 21 0C) 0.5 4.9 27.6 149.3 278.3 371.9 449.0 419.3 342.0 224.5 63.5 0.0 2331.2 HEATING DEG. DAYS(BASE 18 0C) 52.8 4.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5.2 62.1 DEWPOINT (MEAN C) 11.1 15.2 18.1 19.5 23.5 25.9 27.1 27.5 27.2 20.8 12.2 10.9 19.9 MIXING RATIO (G/KG) 8.53 11.01 13.18 14.70 18.85 21.96 23.68 23.97 23.44 16.06 9.64 8.45 16.12 VAPOUR PRESSURE (HPA) 13.74 17.62 20.97 23.24 29.51 34.01 36.47 37.02 36.37 25.37 15.42 13.63 25.28 SATURATION DEF. (HPA) 5.48 4.63 4.39 10.45 13.25 16.97 20.48 16.22 11.61 13.23 12.77 8.08 11.46 RELATIVE HUMIDITY (MEAN %) 73 81 84 72 73 70 68 72 77 68 57 67 72 RELATIVE HUMIDITY (MAX. %) 90 95 96 91 93 90 93 91 92 89 80 89 91 RELATIVE HUMIDITY (MIN. %) 52 61 67 49 47 47 41 48 59 48 35 41 50 RELATIVE HUMIDITY (MEAN% 03UTC) 82 93 93 90 89 83 85 87 90 83 74 86 86 RELATIVE HUMIDITY (MEAN% 09UTC) 56 66 73 55 50 51 47 53 61 50 40 45 54 RELATIVE HUMIDITY (MEAN% 15UTC) 71 78 82 68 71 64 62 68 76 65 55 66 69 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 117.8 58.7 136.4 0.0 0.0 0.0 1.0 3.0 0.0 0.0 0.0 25.5 342.4 DAYS WITH PRECIPITATION >=10 5 2 3 0 0 0 0 0 0 0 0 1 11 DAYS WITH PRECIPITATION >= 5 6 4 7 0 0 0 0 0 0 0 0 1 18 DAYS WITH PRECIPITATION >= 1 7 6 15 0 0 0 1 1 0 0 0 1 31 DAYS WITH PRECIPITATION 8 7 17 0 0 1 1 1 0 0 1 1 37 GREATEST DAILY PRECIPITATION 28.0 22.0 44.0 0.0 0.0 0.0 1.0 3.0 0.0 0.0 0.0 25.5 44.0 DAY 12 17 12 ** ** ** 16 18 ** ** ** 23 DAY WITH THUNDER STORM 3 1 9 0 0 3 4 3 1 0 0 1 25 DAYS WITH SNOW OR SLEET 0 0 1 0 0 0 0 0 0 0 0 0 1 DAYS WITH DUST 2 6 2 14 10 11 12 9 10 7 5 0 88 WIND DIRECTION (PREVAILING) 45 45 45 225 225 225 225 90 225 225 45 45 225 PREVAILING WIND SPEED(KNOTS) 9.3 7.3 7.5 11.7 10.1 10.8 10.8 9.0 10.3 10.2 8.8 7.7 10.3 PREVAILING WIND PERCENT 39.5 21.6 23.0 45.8 46.4 44.6 25.0 23.8 33.3 27.4 25.4 15.7 25.8 CALMS PERCENT OF WIND 33.9 33.2 30.2 32.1 38.3 28.3 35.5 28.6 40.8 43.1 40.0 49.2 36.1 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 43 74 131 214 217 206 178 129 202 188 67 94 183 VECTOR WIND MAGNITUDE(KNOTS) 3.5 0.5 0.4 4.8 4.6 4.1 2.3 2.4 3.7 2.2 2.1 1.0 1.5 WIND STEADINESES (MEAN %) 62.5 9.8 6.9 65.8 80.7 59.4 39.0 40.0 69.8 43.1 42.0 26.3 26.8 WIND SPEED (MEAN KNOTS) 5.6 5.1 5.8 7.3 5.7 6.9 5.9 6.0 5.3 5.1 5.0 3.8 5.6 FASTEST WIND DIRECTION 50 220 230 270 240 220 90 100 220 240 60 60 230 FASTEST WIND SPEED (KNOTS) 23 25 39 29 21 21 19 19 19 19 19 19 39 DAY 11 5 21 16 13 4 15 4 4 16 13 3 DAYS WITH SKY CLEAR (0-2)/8 16 16 7 20 24 25 26 26 29 31 23 27 270 DAYS WITH P.CLOUDY (3-6)/8 10 6 12 8 6 5 5 5 1 0 5 3 66 DAYS WITH CLOUDY (7-8)/8 5 7 12 2 1 0 0 0 0 0 2 1 30 DAYS WITH VISIBILITY =< 2 KM 9 7 5 3 8 3 4 4 5 4 2 5 59 DURATION OF SUNSHINE HOURS 237.1 197.5 184.6 295.8 331.4 331.4 332.9 315.6 278.3 292.0 248.2 252.1 3296.9 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1016.9 1013.9 1011.0 1007.9 1004.4 998.4 995.9 998.6 1002.1 1010.0 1014.5 1017.6 1007.6 MAX. QFE PRESSURE IN HPA 1024.2 1018.7 1016.3 1015.4 1009.8 1005.1 1003.4 1005.1 1011.2 1015.9 1023.6 1023.6 1024.2 DAY-HOUR 28- 6 18- 6 2- 6 8- 6 4- 6 1- 6 3- 6 27- 6 25- 6 13- 6 15- 6 8- 6 MIN. QFE PRESSURE IN HPA 1008.5 1007.8 1006.2 1002.8 997.1 992.6 991.6 992.6 997.7 1003.5 1008.6 1011.8 991.6 DAY-HOUR 12- 0 22-12 17-12 11-12 29-12 19-15 25-15 14-12 18-15 4-12 1- 0 15-12 MEAN QNH PRESSURE IN HPA 1017.4 1014.3 1011.4 1008.3 1004.8 998.8 996.3 999.0 1002.5 1010.4 1014.9 1018.0 1008.0 MAX. QNH PRESSURE IN HPA 1024.6 1019.1 1016.7 1015.8 1010.2 1005.5 1003.8 1005.5 1011.6 1016.3 1024.0 1024.0 1024.6 DAY-HOUR 28- 6 18- 6 2- 6 8- 6 4- 6 1- 6 3- 6 27- 6 25- 6 13- 6 15- 6 8- 6 MIN. QNH PRESSURE IN HPA 1008.9 1008.2 1006.6 1003.2 997.5 993.0 992.0 993.0 998.1 1003.9 1009.0 1012.2 992.0 DAY-HOUR 12- 0 22-12 17-12 11-12 29-12 19-15 25-15 14-12 18-15 4-12 1- 0 15-12 MEAN QFF PRESSURE IN HPA 1017.6 1014.6 1011.7 1008.6 1005.1 999.0 996.6 999.2 1002.7 1010.7 1015.2 1018.3 1008.3 MAX. QFF PRESSURE IN HPA 1024.9 1019.4 1017.0 1016.1 1010.5 1005.8 1004.1 1005.8 1011.9 1016.6 1024.3 1024.3 1024.9 DAY-HOUR 28- 6 18- 6 2- 6 8- 6 4- 6 1- 6 3- 6 27- 6 25- 6 13- 6 15- 6 8- 6 MIN. QFF PRESSURE IN HPA 1009.2 1008.5 1006.9 1003.5 997.8 993.3 992.2 993.2 998.4 1004.2 1009.3 1012.5 992.2 DAY-HOUR 12- 0 22-12 17-12 11-12 30- 0 19-15 25-15 14-12 18-15 4-12 1- 0 15-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1016.2 1013.3 1010.1 1007.1 1003.6 998.0 995.4 997.9 1001.5 1009.4 1013.8 1017.0 1006.9 MAX. QFE PRESSURE IN HPA 1022.1 1016.5 1014.7 1013.1 1007.3 1002.7 1000.8 1003.0 1007.2 1013.6 1021.6 1020.9 1022.1 DAY 29 8 2 8 4 1 3 27 25 14 16 8 MIN. QFE PRESSURE IN HPA 1008.5 1008.5 1006.4 1002.8 997.1 993.5 992.0 993.5 998.3 1004.5 1008.6 1011.8 992.0 DAY 12 5 20 28 30 20 26 14 19 5 1 16 MEAN QNH PRESSURE IN HPA 1016.6 1013.7 1010.5 1007.6 1004.0 998.4 995.8 998.3 1001.9 1009.8 1014.2 1017.4 1007.4 MAX. QNH PRESSURE IN HPA 1022.5 1016.9 1015.1 1013.5 1007.7 1003.1 1001.2 1003.4 1007.6 1014.0 1022.0 1021.3 1022.5 DAY 29 8 2 8 4 1 3 27 25 14 16 8 MIN. QNH PRESSURE IN HPA 1008.9 1008.9 1006.8 1003.2 997.5 993.9 992.4 993.9 998.7 1004.9 1009.0 1012.2 992.4 DAY 12 5 20 28 30 20 26 14 19 5 1 16 MEAN QFF PRESSURE IN HPA 1016.8 1014.0 1010.8 1007.8 1004.3 998.6 996.0 998.6 1002.1 1010.1 1014.5 1017.7 1007.6 MAX. QFF PRESSURE IN HPA 1022.8 1017.2 1015.4 1013.8 1008.0 1003.4 1001.5 1003.7 1007.9 1014.3 1022.3 1021.6 1022.8 DAY 29 8 2 8 4 1 3 27 25 14 16 8 MIN. QFF PRESSURE IN HPA 1009.2 1009.2 1007.1 1003.5 997.8 994.1 992.6 994.1 999.0 1005.2 1009.3 1012.5 992.6 DAY 12 5 20 28 30 20 26 14 19 5 1 16 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1017.0 1013.9 1011.0 1008.4 1005.0 999.4 996.8 999.4 1002.8 1010.6 1015.0 1018.1 1008.1 MAX. QFE PRESSURE IN HPA 1021.8 1017.0 1015.1 1014.4 1008.5 1004.2 1002.4 1003.7 1009.9 1014.4 1022.2 1022.2 1022.2 DAY 29 8 2 8 4 1 3 27 25 21 16 8 MIN. QFE PRESSURE IN HPA 1010.1 1009.0 1007.2 1004.9 999.1 995.0 993.6 994.4 999.7 1005.4 1010.1 1014.5 993.6 DAY 12 5 20 28 30 20 12 14 19 5 1 16 MEAN QNH PRESSURE IN HPA 1017.5 1014.4 1011.4 1008.8 1005.4 999.8 997.2 999.8 1003.2 1011.0 1015.4 1018.6 1008.5 MAX. QNH PRESSURE IN HPA 1022.2 1017.4 1015.5 1014.8 1008.9 1004.6 1002.8 1004.1 1010.3 1014.8 1022.6 1022.6 1022.6 DAY 29 8 2 8 4 1 3 27 25 21 16 8 MIN. QNH PRESSURE IN HPA 1010.5 1009.4 1007.6 1005.3 999.5 995.4 994.0 994.8 1000.1 1005.8 1010.5 1014.9 994.0 DAY 12 5 20 28 30 20 12 14 19 5 1 16 MEAN QFF PRESSURE IN HPA 1017.7 1014.6 1011.7 1009.1 1005.6 1000.0 997.5 1000.0 1003.5 1011.3 1015.7 1018.8 1008.8 MAX. QFF PRESSURE IN HPA 1022.5 1017.7 1015.8 1015.1 1009.2 1004.9 1003.1 1004.4 1010.6 1015.1 1022.9 1022.9 1022.9 DAY 29 8 2 8 4 1 3 27 25 21 16 8 MIN. QFF PRESSURE IN HPA 1010.8 1009.7 1007.9 1005.6 999.8 995.7 994.3 995.1 1000.4 1006.1 1010.8 1015.2 994.3 DAY 12 5 20 28 30 20 12 14 19 5 1 16 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1019.1 1015.8 1012.7 1009.9 1006.2 1000.2 997.5 1000.4 1004.1 1012.0 1016.6 1019.8 1009.5 MAX. QFE PRESSURE IN HPA 1024.2 1018.7 1016.3 1015.4 1009.8 1005.1 1003.4 1005.1 1011.2 1015.9 1023.6 1023.6 1024.2 DAY 28 18 2 8 4 1 3 27 25 13 15 8 MIN. QFE PRESSURE IN HPA 1012.3 1010.8 1009.2 1006.2 1000.1 995.9 994.4 994.8 1000.7 1006.7 1012.0 1015.7 994.4 DAY 12 5 20 28 30 19 12 14 15 4 1 16 MEAN QNH PRESSURE IN HPA 1019.5 1016.3 1013.1 1010.3 1006.6 1000.6 997.9 1000.8 1004.6 1012.4 1017.0 1020.2 1009.9 MAX. QNH PRESSURE IN HPA 1024.6 1019.1 1016.7 1015.8 1010.2 1005.5 1003.8 1005.5 1011.6 1016.3 1024.0 1024.0 1024.6 DAY 28 18 2 8 4 1 3 27 25 13 15 8 MIN. QNH PRESSURE IN HPA 1012.7 1011.2 1009.6 1006.6 1000.5 996.3 994.8 995.2 1001.1 1007.1 1012.4 1016.1 994.8 DAY 12 5 20 28 30 19 12 14 15 4 1 16 MEAN QFF PRESSURE IN HPA 1019.7 1016.5 1013.4 1010.6 1006.9 1000.8 998.2 1001.0 1004.7 1012.7 1017.2 1020.5 1010.2 MAX. QFF PRESSURE IN HPA 1024.9 1019.4 1017.0 1016.1 1010.5 1005.8 1004.1 1005.8 1011.9 1016.6 1024.3 1024.3 1024.9 DAY 28 18 2 8 4 1 3 27 25 13 15 8 MIN. QFF PRESSURE IN HPA 1013.0 1011.5 1009.9 1006.9 1000.8 996.6 995.0 995.4 1001.4 1007.4 1012.7 1016.4 995.0 DAY 12 5 20 28 30 19 12 14 15 4 1 16 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1017.3 1014.3 1011.7 1008.8 1005.4 999.1 996.7 999.2 1002.9 1010.3 1014.7 1017.9 1008.2 MAX. QFE PRESSURE IN HPA 1022.5 1017.4 1014.7 1013.9 1009.3 1004.3 1002.9 1003.6 1009.6 1014.7 1021.9 1021.9 1022.5 DAY 28 17 2 7 4 1 3 27 25 13 15 8 MIN. QFE PRESSURE IN HPA 1010.7 1009.6 1008.3 1004.5 999.1 994.8 993.6 994.0 999.9 1005.1 1010.5 1014.0 993.6 DAY 12 22 20 28 29 19 25 14 18 4 2 15 MEAN QNH PRESSURE IN HPA 1017.7 1014.7 1012.1 1009.2 1005.8 999.5 997.1 999.6 1003.3 1010.8 1015.1 1018.3 1008.6 MAX. QNH PRESSURE IN HPA 1022.9 1017.8 1015.1 1014.3 1009.7 1004.7 1003.3 1004.0 1010.0 1015.1 1022.3 1022.3 1022.9 DAY 28 17 2 7 4 1 3 27 25 13 15 8 MIN. QNH PRESSURE IN HPA 1011.1 1010.0 1008.7 1004.9 999.5 995.2 994.0 994.4 1000.3 1005.5 1010.9 1014.4 994.0 DAY 12 22 20 28 29 19 25 14 18 4 2 15 MEAN QFF PRESSURE IN HPA 1017.9 1015.0 1012.4 1009.5 1006.1 999.7 997.3 999.8 1003.5 1011.0 1015.4 1018.6 1008.9 MAX. QFF PRESSURE IN HPA 1023.2 1018.1 1015.4 1014.6 1010.0 1005.0 1003.6 1004.3 1010.3 1015.4 1022.6 1022.6 1023.2 DAY 28 17 2 7 4 1 3 27 25 13 15 8 MIN. QFF PRESSURE IN HPA 1011.4 1010.3 1009.0 1005.2 999.8 995.5 994.2 994.6 1000.6 1005.8 1011.2 1014.7 994.2 DAY 12 22 20 28 29 19 25 14 18 4 2 16 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1015.8 1012.7 1010.0 1006.8 1003.6 997.2 994.9 997.3 1000.9 1008.8 1013.3 1016.2 1006.5 MAX. QFE PRESSURE IN HPA 1021.1 1015.9 1013.2 1012.4 1007.2 1002.3 1000.9 1001.7 1007.1 1012.5 1020.3 1020.1 1021.1 DAY 28 18 1 7 4 1 3 27 25 13 15 8 MIN. QFE PRESSURE IN HPA 1009.4 1007.8 1006.2 1002.8 997.1 993.3 992.1 992.6 997.9 1003.5 1008.8 1011.8 992.1 DAY 12 22 17 11 29 19 12 14 18 4 1 15 MEAN QNH PRESSURE IN HPA 1016.2 1013.1 1010.4 1007.2 1004.0 997.6 995.3 997.7 1001.3 1009.2 1013.7 1016.6 1006.9 MAX. QNH PRESSURE IN HPA 1021.5 1016.3 1013.6 1012.8 1007.6 1002.7 1001.3 1002.1 1007.5 1012.9 1020.7 1020.5 1021.5 DAY 28 18 1 7 4 1 3 27 25 13 15 8 MIN. QNH PRESSURE IN HPA 1009.8 1008.2 1006.6 1003.2 997.5 993.7 992.5 993.0 998.3 1003.9 1009.2 1012.2 992.5 DAY 12 22 17 11 29 19 12 14 18 4 1 15 MEAN QFF PRESSURE IN HPA 1016.5 1013.4 1010.7 1007.5 1004.2 997.9 995.5 998.0 1001.5 1009.5 1014.0 1016.9 1007.1 MAX. QFF PRESSURE IN HPA 1021.8 1016.6 1013.9 1013.1 1007.9 1003.0 1001.6 1002.4 1007.8 1013.2 1021.0 1020.8 1021.8 DAY 28 18 1 7 4 1 3 27 25 13 15 8 MIN. QFF PRESSURE IN HPA 1010.1 1008.5 1006.9 1003.5 997.8 994.0 992.7 993.2 998.6 1004.2 1009.5 1012.5 992.7 DAY 12 22 17 11 29 19 12 14 18 4 1 15 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1016.4 1013.2 1010.7 1006.8 1003.3 996.9 994.7 997.3 1000.9 1009.2 1013.9 1016.9 1006.7 MAX. QFE PRESSURE IN HPA 1021.4 1016.8 1014.9 1012.7 1006.6 1001.3 1000.5 1001.5 1006.8 1013.2 1021.3 1020.9 1021.4 DAY 28 18 22 7 4 1 3 26 24 13 15 7 MIN. QFE PRESSURE IN HPA 1010.8 1008.8 1006.9 1002.9 997.1 992.6 991.6 993.0 997.7 1004.1 1009.3 1012.1 991.6 DAY 12 22 17 28 29 19 25 3 18 4 1 15 MEAN QNH PRESSURE IN HPA 1016.8 1013.6 1011.1 1007.2 1003.7 997.3 995.1 997.7 1001.3 1009.6 1014.4 1017.4 1007.1 MAX. QNH PRESSURE IN HPA 1021.8 1017.2 1015.3 1013.1 1007.0 1001.7 1000.9 1001.9 1007.2 1013.6 1021.7 1021.3 1021.8 DAY 28 18 22 7 4 1 3 26 24 13 15 7 MIN. QNH PRESSURE IN HPA 1011.2 1009.2 1007.3 1003.3 997.5 993.0 992.0 993.4 998.1 1004.5 1009.7 1012.5 992.0 DAY 12 22 17 28 29 19 25 3 18 4 1 15 MEAN QFF PRESSURE IN HPA 1017.1 1013.9 1011.4 1007.4 1004.0 997.6 995.4 998.0 1001.6 1009.9 1014.6 1017.7 1007.4 MAX. QFF PRESSURE IN HPA 1022.1 1017.5 1015.6 1013.4 1007.3 1002.0 1001.2 1002.2 1007.5 1013.9 1022.0 1021.6 1022.1 DAY 28 18 22 7 4 1 3 26 24 13 15 7 MIN. QFF PRESSURE IN HPA 1011.5 1009.5 1007.6 1003.6 997.8 993.3 992.2 993.6 998.4 1004.8 1010.0 1012.8 992.2 DAY 12 22 17 28 29 19 25 3 18 4 1 15 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1017.2 1014.1 1011.3 1007.9 1004.5 998.2 995.7 998.6 1002.1 1010.1 1014.6 1017.7 1007.7 MAX. QFE PRESSURE IN HPA 1021.9 1017.4 1015.2 1013.6 1007.6 1002.5 1001.4 1003.9 1009.5 1014.3 1021.8 1021.8 1021.9 DAY 28 7 1 7 17 1 3 26 24 13 15 7 MIN. QFE PRESSURE IN HPA 1012.0 1009.9 1007.8 1004.5 998.0 994.0 992.6 994.3 998.8 1005.3 1009.3 1012.1 992.6 DAY 12 22 17 28 29 17 25 2 18 5 1 15 MEAN QNH PRESSURE IN HPA 1017.7 1014.5 1011.8 1008.3 1004.9 998.6 996.1 999.0 1002.5 1010.6 1015.1 1018.1 1008.1 MAX. QNH PRESSURE IN HPA 1022.3 1017.8 1015.6 1014.0 1008.0 1002.9 1001.8 1004.3 1009.9 1014.7 1022.2 1022.2 1022.3 DAY 28 7 1 7 17 1 3 26 24 13 15 7 MIN. QNH PRESSURE IN HPA 1012.4 1010.3 1008.2 1004.9 998.4 994.4 993.0 994.7 999.2 1005.7 1009.7 1012.5 993.0 DAY 12 22 17 28 29 17 25 2 18 5 1 15 MEAN QFF PRESSURE IN HPA 1018.0 1014.8 1012.0 1008.6 1005.1 998.8 996.4 999.3 1002.7 1010.8 1015.3 1018.4 1008.3 MAX. QFF PRESSURE IN HPA 1022.6 1018.1 1015.9 1014.3 1008.3 1003.2 1002.1 1004.6 1010.2 1015.0 1022.5 1022.5 1022.6 DAY 28 7 1 7 17 1 3 26 24 13 15 7 MIN. QFF PRESSURE IN HPA 1012.7 1010.6 1008.5 1005.2 998.7 994.6 993.2 994.9 999.4 1006.0 1010.0 1012.8 993.2 DAY 13 22 17 28 29 17 25 2 18 5 1 15 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1016.7 1013.7 1010.7 1007.6 1004.0 998.2 995.7 998.5 1001.8 1009.8 1014.2 1017.2 1007.3 MAX. QFE PRESSURE IN HPA 1021.4 1017.1 1015.0 1013.5 1007.7 1002.2 1001.3 1003.4 1007.7 1013.6 1021.6 1021.2 1021.6 DAY 28 7 1 7 3 1 3 26 24 13 15 7 MIN. QFE PRESSURE IN HPA 1011.4 1009.5 1007.6 1004.2 997.6 993.9 992.3 993.9 998.7 1004.8 1009.3 1012.1 992.3 DAY 13 4 14 27 29 19 25 13 18 4 1 15 MEAN QNH PRESSURE IN HPA 1017.1 1014.1 1011.1 1008.0 1004.4 998.6 996.1 998.9 1002.2 1010.2 1014.6 1017.6 1007.7 MAX. QNH PRESSURE IN HPA 1021.8 1017.5 1015.4 1013.9 1008.1 1002.6 1001.7 1003.8 1008.1 1014.0 1022.0 1021.6 1022.0 DAY 28 7 1 7 3 1 3 26 24 13 15 7 MIN. QNH PRESSURE IN HPA 1011.8 1009.9 1008.0 1004.6 998.0 994.3 992.7 994.3 999.1 1005.2 1009.7 1012.5 992.7 DAY 13 4 14 27 29 19 25 13 18 4 1 15 MEAN QFF PRESSURE IN HPA 1017.4 1014.4 1011.4 1008.3 1004.7 998.8 996.4 999.1 1002.5 1010.5 1014.9 1017.9 1008.0 MAX. QFF PRESSURE IN HPA 1022.1 1017.8 1015.7 1014.2 1008.4 1002.9 1001.9 1004.1 1008.4 1014.3 1022.3 1021.9 1022.3 DAY 28 7 1 7 3 1 3 26 24 13 15 7 MIN. QFF PRESSURE IN HPA 1012.1 1010.2 1008.3 1004.9 998.3 994.5 992.9 994.5 999.4 1005.5 1010.0 1012.8 992.9 DAY 13 4 14 27 29 19 25 13 18 4 1 15 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 17.4 19.5 20.4 23.7 28.2 32.6 33.6 33.6 32.1 28.9 23.5 19.6 26.1 MINIMUN AIR TEMPERATURE (C) 12.3 14.1 16.2 18.9 23.2 27.7 30.5 30.6 28.1 24.7 19.5 15.2 21.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 7 29 30 31 31 30 30 12 0 200 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 9.6 10.5 15.4 20.2 24.4 28.6 28.0 25.8 20.0 14.4 12.8 9.0 DAY 21 3 2 4 9 1 5 21 20 18 26 9 MAXIMUM AIR TEMPERATURE (C) 23.1 24.5 24.5 28.6 33.9 38.3 37.9 37.9 36.4 33.5 28.0 24.8 30.9 DAYS WITH MAXIMUM TEMP. >=30 0 1 0 10 28 30 31 31 30 30 7 0 198 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 25.6 30.2 28.0 33.6 39.0 46.6 39.8 41.0 38.2 36.8 32.0 26.8 46.6 DAY 10 22 8 19 30 29 2 28 7 2 9 3 DIF. BETWEEN (MAX.-MIN.) (C) 10.8 10.4 8.3 9.7 10.7 10.6 7.4 7.3 8.3 8.8 8.5 9.6 9.1 MEAN DAILY TEMP. (MDT) (C) 17.7 19.3 20.3 23.8 28.6 33.0 34.2 34.3 32.3 29.1 23.7 20.0 26.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 6.5 9.2 85.3 235.2 359.6 408.7 410.8 338.3 249.7 83.0 2.3 2188.8 HEATING DEG. DAYS(BASE 18 0C) 25.6 5.2 1.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 32.1 DEWPOINT (MEAN C) 11.8 13.3 15.7 18.7 22.9 25.4 27.5 27.6 27.1 22.7 16.5 13.3 20.2 MIXING RATIO (G/KG) 8.83 9.73 11.28 13.72 17.87 21.19 23.89 24.05 23.19 17.80 12.07 9.66 16.11 VAPOUR PRESSURE (HPA) 14.21 15.62 18.02 21.77 28.05 32.86 36.79 37.13 36.06 28.08 19.28 15.53 25.28 SATURATION DEF. (HPA) 6.20 7.52 6.19 8.03 10.82 17.33 15.47 15.30 12.09 12.48 10.25 7.64 10.78 RELATIVE HUMIDITY (MEAN %) 73 70 76 75 75 69 72 72 76 70 67 69 72 RELATIVE HUMIDITY (MAX. %) 91 89 92 93 94 90 87 88 91 85 83 87 89 RELATIVE HUMIDITY (MIN. %) 51 50 59 52 52 43 53 54 57 55 51 51 52 RELATIVE HUMIDITY (MEAN% 03UTC) 88 84 89 91 90 84 84 85 90 83 77 83 86 RELATIVE HUMIDITY (MEAN% 09UTC) 54 52 63 58 54 49 57 57 61 60 52 54 56 RELATIVE HUMIDITY (MEAN% 15UTC) 69 67 73 73 76 63 68 67 75 68 65 66 69 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 55.3 0.0 108.5 2.9 0.0 0.0 0.0 5.0 0.0 18.5 16.3 23.4 229.9 DAYS WITH PRECIPITATION >=10 1 0 4 0 0 0 0 0 0 1 1 1 8 DAYS WITH PRECIPITATION >= 5 2 0 6 0 0 0 0 1 0 2 1 2 14 DAYS WITH PRECIPITATION >= 1 4 0 10 1 0 0 0 1 0 3 2 5 26 DAYS WITH PRECIPITATION 4 3 12 2 0 0 0 1 0 5 6 5 38 GREATEST DAILY PRECIPITATION 41.0 0.0 31.0 2.8 0.0 0.0 0.0 5.0 0.0 10.0 13.4 10.4 41.0 DAY 25 ** 29 23 ** ** ** 7 ** 31 12 21 DAY WITH THUNDER STORM 4 0 6 1 0 0 4 1 0 12 7 5 40 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 2 6 7 11 10 10 10 5 12 8 0 1 82 WIND DIRECTION (PREVAILING) 225 225 225 225 225 225 225 225 225 225 45 45 225 PREVAILING WIND SPEED(KNOTS) 7.9 10.9 12.0 11.1 10.3 10.0 10.0 9.1 10.6 11.0 7.4 7.4 10.4 PREVAILING WIND PERCENT 17.7 41.5 33.9 43.3 58.5 32.5 42.7 25.0 40.4 27.4 21.3 15.3 32.0 CALMS PERCENT OF WIND 47.6 32.6 40.7 29.6 29.0 34.6 23.4 27.4 27.9 33.9 39.6 41.1 34.0 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 240 222 221 217 213 186 193 153 202 199 92 331 204 VECTOR WIND MAGNITUDE(KNOTS) 1.0 4.3 3.3 4.4 6.3 3.1 3.5 2.5 3.4 2.2 1.7 0.8 2.6 WIND STEADINESES (MEAN %) 23.3 66.2 55.0 66.7 90.0 52.5 50.7 43.1 50.0 35.5 34.7 18.2 44.1 WIND SPEED (MEAN KNOTS) 4.3 6.5 6.0 6.6 7.0 5.9 6.9 5.8 6.8 6.2 4.9 4.4 5.9 FASTEST WIND DIRECTION 240 230 230 220 220 230 220 220 230 60 240 330 240 FASTEST WIND SPEED (KNOTS) 19 27 29 27 19 19 21 19 19 35 39 23 39 DAY 3 28 16 11 19 12 10 18 2 17 12 21 DAYS WITH SKY CLEAR (0-2)/8 22 24 7 20 29 27 27 28 30 22 13 11 260 DAYS WITH P.CLOUDY (3-6)/8 6 3 12 6 2 3 4 3 0 6 13 13 71 DAYS WITH CLOUDY (7-8)/8 3 1 12 4 0 0 0 0 0 3 4 7 34 DAYS WITH VISIBILITY =< 2 KM 5 3 1 7 8 1 4 4 4 3 0 2 42 DURATION OF SUNSHINE HOURS 243.0 240.4 199.5 271.0 350.7 341.0 321.5 317.8 294.8 255.7 224.1 202.4 3261.9 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1016.0 1014.8 1012.1 1009.4 1005.4 998.8 995.0 998.1 1003.9 1010.7 1014.2 1015.9 1007.9 MAX. QFE PRESSURE IN HPA 1021.9 1020.2 1022.4 1015.2 1011.9 1007.5 999.8 1004.4 1010.7 1018.2 1020.1 1024.2 1024.2 DAY-HOUR 8- 6 8- 6 10-18 14- 6 7- 6 4- 6 25- 6 16- 6 18- 6 31- 6 30- 6 29- 6 MIN. QFE PRESSURE IN HPA 1003.6 1010.1 1005.2 1005.3 998.7 987.8 988.6 991.7 998.6 1005.0 1009.6 1008.9 987.8 DAY-HOUR 17-12 27-12 25- 0 29-15 30-15 29-15 11-12 1-15 2-15 1- 0 24- 0 11-12 MEAN QNH PRESSURE IN HPA 1016.4 1015.3 1012.5 1009.8 1005.8 999.2 995.4 998.5 1004.3 1011.1 1014.6 1016.3 1008.3 MAX. QNH PRESSURE IN HPA 1022.3 1020.6 1022.8 1015.6 1012.3 1007.9 1000.2 1004.8 1011.1 1018.6 1020.5 1024.6 1024.6 DAY-HOUR 8- 6 8- 6 10-18 14- 6 7- 6 4- 6 25- 6 16- 6 18- 6 31- 6 30- 6 29- 6 MIN. QNH PRESSURE IN HPA 1004.0 1010.5 1005.6 1005.7 999.1 988.2 989.0 992.1 999.0 1005.4 1010.0 1009.3 988.2 DAY-HOUR 17-12 27-12 25- 0 29-15 30-15 29-15 11-12 1-15 2-15 1- 0 24- 0 11-12 MEAN QFF PRESSURE IN HPA 1016.7 1015.5 1012.8 1010.1 1006.0 999.4 995.6 998.7 1004.5 1011.3 1014.9 1016.6 1008.5 MAX. QFF PRESSURE IN HPA 1022.6 1020.9 1023.1 1015.9 1012.6 1008.2 1000.5 1005.1 1011.4 1018.9 1020.8 1024.9 1024.9 DAY-HOUR 8- 6 8- 6 10-18 14- 6 7- 6 4- 6 25- 6 16- 6 18- 6 31- 6 30- 6 29- 6 MIN. QFF PRESSURE IN HPA 1004.3 1010.8 1005.9 1006.0 999.4 988.4 989.2 992.3 999.3 1005.7 1010.3 1009.6 988.4 DAY-HOUR 17-12 27-12 25- 0 29-15 30-15 29-15 11-12 1-15 2-15 1- 0 24- 0 11-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1015.7 1014.2 1011.5 1008.7 1004.9 998.3 994.6 997.4 1003.1 1009.9 1013.5 1015.1 1007.2 MAX. QFE PRESSURE IN HPA 1019.3 1016.8 1020.2 1012.0 1009.0 1005.3 997.7 1002.3 1007.8 1013.3 1016.8 1020.7 1020.7 DAY 20 13 11 15 8 5 22 17 19 31 30 30 MIN. QFE PRESSURE IN HPA 1006.3 1011.5 1005.2 1005.8 1000.0 989.5 990.4 992.0 999.0 1005.0 1009.6 1010.6 989.5 DAY 18 28 25 11 31 30 12 1 3 1 24 12 MEAN QNH PRESSURE IN HPA 1016.1 1014.6 1011.9 1009.1 1005.3 998.7 995.0 997.8 1003.5 1010.3 1013.9 1015.5 1007.6 MAX. QNH PRESSURE IN HPA 1019.7 1017.2 1020.6 1012.4 1009.4 1005.7 998.1 1002.7 1008.2 1013.7 1017.2 1021.1 1021.1 DAY 20 13 11 15 8 5 22 17 19 31 30 30 MIN. QNH PRESSURE IN HPA 1006.7 1011.9 1005.6 1006.2 1000.4 989.9 990.8 992.4 999.4 1005.4 1010.0 1011.0 989.9 DAY 18 28 25 11 31 30 12 1 3 1 24 12 MEAN QFF PRESSURE IN HPA 1016.4 1014.9 1012.2 1009.4 1005.6 998.9 995.2 998.1 1003.8 1010.6 1014.2 1015.8 1007.9 MAX. QFF PRESSURE IN HPA 1020.0 1017.5 1020.9 1012.7 1009.7 1006.0 998.3 1003.0 1008.5 1014.0 1017.5 1021.4 1021.4 DAY 20 13 11 15 8 5 22 17 19 31 30 30 MIN. QFF PRESSURE IN HPA 1007.0 1012.2 1005.9 1006.5 1000.7 990.1 991.0 992.6 999.6 1005.7 1010.3 1011.3 990.1 DAY 18 28 25 11 31 30 12 1 3 1 24 12 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1016.5 1015.0 1012.2 1009.8 1006.1 999.7 995.7 998.9 1004.6 1011.3 1014.6 1016.1 1008.4 MAX. QFE PRESSURE IN HPA 1020.6 1018.1 1020.2 1013.6 1010.6 1006.4 999.1 1003.5 1008.9 1015.6 1018.2 1022.2 1022.2 DAY 8 8 11 14 7 5 25 16 18 31 30 29 MIN. QFE PRESSURE IN HPA 1009.7 1012.5 1006.2 1007.0 1001.4 990.8 991.3 993.6 1000.8 1006.2 1011.3 1011.5 990.8 DAY 26 28 25 27 31 29 11 1 3 1 20 11 MEAN QNH PRESSURE IN HPA 1017.0 1015.4 1012.6 1010.2 1006.5 1000.1 996.1 999.3 1005.0 1011.7 1015.1 1016.6 1008.8 MAX. QNH PRESSURE IN HPA 1021.0 1018.5 1020.6 1014.0 1011.0 1006.8 999.5 1003.9 1009.3 1016.0 1018.6 1022.6 1022.6 DAY 8 8 11 14 7 5 25 16 18 31 30 29 MIN. QNH PRESSURE IN HPA 1010.1 1012.9 1006.6 1007.4 1001.8 991.2 991.7 994.0 1001.2 1006.6 1011.7 1011.9 991.2 DAY 26 28 25 27 31 29 11 1 3 1 20 11 MEAN QFF PRESSURE IN HPA 1017.2 1015.7 1012.9 1010.5 1006.8 1000.3 996.4 999.6 1005.3 1011.9 1015.3 1016.8 1009.1 MAX. QFF PRESSURE IN HPA 1021.3 1018.8 1020.9 1014.3 1011.3 1007.1 999.8 1004.2 1009.6 1016.3 1018.9 1022.9 1022.9 DAY 8 8 11 14 7 5 25 16 18 31 30 29 MIN. QFF PRESSURE IN HPA 1010.4 1013.2 1006.9 1007.7 1002.1 991.4 992.0 994.2 1001.5 1006.9 1012.0 1012.2 991.4 DAY 26 28 25 27 31 29 11 1 3 1 20 11 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1018.2 1016.9 1014.0 1011.4 1007.2 1000.6 996.5 999.9 1005.9 1012.7 1016.2 1018.1 1009.8 MAX. QFE PRESSURE IN HPA 1021.9 1020.2 1021.3 1015.2 1011.9 1007.5 999.8 1004.4 1010.7 1018.2 1020.1 1024.2 1024.2 DAY 8 8 1 14 7 4 25 16 18 31 30 29 MIN. QFE PRESSURE IN HPA 1010.3 1014.2 1007.8 1008.7 1002.4 991.5 991.5 994.8 1002.0 1007.7 1012.7 1013.0 991.5 DAY 17 27 25 27 31 29 11 1 3 1 20 11 MEAN QNH PRESSURE IN HPA 1018.6 1017.3 1014.4 1011.8 1007.6 1001.0 996.9 1000.4 1006.3 1013.1 1016.6 1018.5 1010.2 MAX. QNH PRESSURE IN HPA 1022.3 1020.6 1021.7 1015.6 1012.3 1007.9 1000.2 1004.8 1011.1 1018.6 1020.5 1024.6 1024.6 DAY 8 8 1 14 7 4 25 16 18 31 30 29 MIN. QNH PRESSURE IN HPA 1010.7 1014.6 1008.2 1009.1 1002.8 991.9 991.9 995.2 1002.4 1008.1 1013.1 1013.4 991.9 DAY 17 27 25 27 31 29 11 1 3 1 20 11 MEAN QFF PRESSURE IN HPA 1018.9 1017.6 1014.7 1012.0 1007.9 1001.3 997.2 1000.6 1006.6 1013.3 1016.8 1018.8 1010.5 MAX. QFF PRESSURE IN HPA 1022.6 1020.9 1022.0 1015.9 1012.6 1008.2 1000.5 1005.1 1011.4 1018.9 1020.8 1024.9 1024.9 DAY 8 8 1 14 7 4 25 16 18 31 30 29 MIN. QFF PRESSURE IN HPA 1011.0 1014.9 1008.5 1009.4 1003.1 992.1 992.1 995.4 1002.7 1008.4 1013.4 1013.7 992.1 DAY 17 27 25 29 31 29 11 1 3 1 20 11 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1016.4 1015.6 1012.9 1010.3 1006.2 999.7 995.6 998.7 1004.7 1011.0 1014.4 1016.1 1008.5 MAX. QFE PRESSURE IN HPA 1020.0 1018.8 1019.7 1014.1 1011.0 1006.9 998.7 1003.2 1009.7 1016.5 1018.2 1022.0 1022.0 DAY 8 8 11 14 8 4 25 16 18 31 30 29 MIN. QFE PRESSURE IN HPA 1006.6 1012.8 1007.3 1008.0 1001.1 990.3 990.6 993.8 1001.0 1006.4 1011.3 1010.5 990.3 DAY 17 27 25 29 30 29 11 1 2 1 20 11 MEAN QNH PRESSURE IN HPA 1016.8 1016.1 1013.3 1010.7 1006.6 1000.1 996.0 999.1 1005.1 1011.4 1014.8 1016.5 1008.9 MAX. QNH PRESSURE IN HPA 1020.4 1019.2 1020.1 1014.5 1011.4 1007.3 999.1 1003.6 1010.1 1016.9 1018.6 1022.4 1022.4 DAY 8 8 11 14 8 4 25 16 18 31 30 29 MIN. QNH PRESSURE IN HPA 1007.0 1013.2 1007.7 1008.4 1001.5 990.7 991.0 994.2 1001.4 1006.8 1011.7 1010.9 990.7 DAY 17 27 25 29 30 29 11 1 2 1 20 11 MEAN QFF PRESSURE IN HPA 1017.1 1016.3 1013.5 1011.0 1006.8 1000.4 996.2 999.4 1005.4 1011.7 1015.1 1016.8 1009.1 MAX. QFF PRESSURE IN HPA 1020.7 1019.5 1020.4 1014.8 1011.7 1007.6 999.4 1003.9 1010.4 1017.2 1018.9 1022.7 1022.7 DAY 8 8 11 14 8 4 25 16 18 31 30 29 MIN. QFF PRESSURE IN HPA 1007.3 1013.5 1008.0 1008.7 1001.8 990.9 991.2 994.4 1001.7 1007.1 1012.0 1011.2 990.9 DAY 17 27 25 29 30 29 11 1 2 1 20 11 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1014.7 1013.6 1010.9 1008.4 1004.5 997.8 993.8 996.8 1002.8 1009.4 1013.1 1014.7 1006.7 MAX. QFE PRESSURE IN HPA 1018.6 1016.1 1018.5 1012.3 1009.2 1004.2 996.6 1001.0 1007.5 1016.0 1016.9 1020.3 1020.3 DAY 8 8 11 12 8 4 21 16 18 31 4 29 MIN. QFE PRESSURE IN HPA 1003.6 1010.1 1005.5 1005.8 999.4 988.4 988.6 992.1 999.0 1005.3 1010.1 1008.9 988.4 DAY 17 27 25 29 30 29 11 1 2 1 24 11 MEAN QNH PRESSURE IN HPA 1015.1 1014.0 1011.4 1008.8 1004.9 998.2 994.3 997.2 1003.2 1009.8 1013.5 1015.1 1007.1 MAX. QNH PRESSURE IN HPA 1019.0 1016.5 1018.9 1012.7 1009.6 1004.6 997.0 1001.4 1007.9 1016.4 1017.3 1020.7 1020.7 DAY 8 8 11 12 8 4 21 16 18 31 4 29 MIN. QNH PRESSURE IN HPA 1004.0 1010.5 1005.9 1006.2 999.8 988.8 989.0 992.5 999.4 1005.7 1010.5 1009.3 988.8 DAY 17 27 25 29 30 29 11 1 2 1 24 11 MEAN QFF PRESSURE IN HPA 1015.4 1014.3 1011.6 1009.1 1005.1 998.5 994.5 997.4 1003.5 1010.0 1013.8 1015.4 1007.4 MAX. QFF PRESSURE IN HPA 1019.3 1016.8 1019.2 1013.0 1009.9 1004.9 997.3 1001.7 1008.2 1016.7 1017.6 1021.0 1021.0 DAY 8 8 11 12 8 4 22 16 18 31 4 29 MIN. QFF PRESSURE IN HPA 1004.3 1010.8 1006.2 1006.5 1000.1 989.0 989.2 992.7 999.7 1006.0 1010.8 1009.6 989.0 DAY 17 27 25 29 30 29 11 1 2 1 24 11 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1015.2 1013.9 1011.3 1008.4 1004.2 997.3 993.6 996.8 1002.7 1009.8 1013.7 1015.6 1006.9 MAX. QFE PRESSURE IN HPA 1019.0 1016.4 1018.5 1012.3 1008.9 1004.2 996.6 1001.1 1007.5 1015.3 1017.3 1021.2 1021.2 DAY 7 8 11 12 8 4 21 16 18 31 4 29 MIN. QFE PRESSURE IN HPA 1004.4 1010.7 1005.5 1005.3 998.7 987.8 989.1 991.7 998.6 1005.8 1010.7 1010.2 987.8 DAY 17 27 25 29 30 29 11 1 2 1 13 11 MEAN QNH PRESSURE IN HPA 1015.6 1014.3 1011.7 1008.8 1004.6 997.7 994.0 997.2 1003.1 1010.2 1014.1 1016.0 1007.3 MAX. QNH PRESSURE IN HPA 1019.4 1016.8 1018.9 1012.7 1009.3 1004.6 997.0 1001.5 1007.9 1015.7 1017.7 1021.6 1021.6 DAY 7 8 11 12 8 4 21 16 18 31 4 29 MIN. QNH PRESSURE IN HPA 1004.8 1011.1 1005.9 1005.7 999.1 988.2 989.5 992.1 999.0 1006.2 1011.1 1010.6 988.2 DAY 17 27 25 29 30 29 11 1 2 1 13 11 MEAN QFF PRESSURE IN HPA 1015.9 1014.6 1012.0 1009.1 1004.8 998.0 994.3 997.4 1003.4 1010.4 1014.4 1016.3 1007.5 MAX. QFF PRESSURE IN HPA 1019.7 1017.1 1019.2 1013.0 1009.6 1004.9 997.3 1001.8 1008.2 1016.0 1018.0 1021.9 1021.9 DAY 7 8 11 12 8 4 21 16 18 31 30 29 MIN. QFF PRESSURE IN HPA 1005.1 1011.4 1006.2 1006.0 999.4 988.4 989.7 992.3 999.3 1006.5 1011.4 1010.9 988.4 DAY 17 27 25 29 30 29 11 1 2 1 13 11 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1016.1 1015.0 1012.4 1009.4 1005.3 998.5 995.1 998.2 1003.7 1010.8 1014.5 1016.1 1007.9 MAX. QFE PRESSURE IN HPA 1019.7 1017.8 1022.4 1012.9 1009.5 1005.8 998.9 1003.3 1008.4 1016.3 1017.9 1022.2 1022.4 DAY 9 12 10 23 8 5 22 16 18 31 30 29 MIN. QFE PRESSURE IN HPA 1005.5 1011.8 1006.5 1006.6 1000.8 990.0 991.2 993.5 999.3 1006.5 1011.3 1011.2 990.0 DAY 17 23 25 10 30 29 11 1 2 5 23 11 MEAN QNH PRESSURE IN HPA 1016.6 1015.5 1012.8 1009.8 1005.7 998.9 995.5 998.6 1004.2 1011.2 1014.9 1016.6 1008.3 MAX. QNH PRESSURE IN HPA 1020.1 1018.2 1022.8 1013.3 1009.9 1006.2 999.3 1003.7 1008.8 1016.7 1018.3 1022.6 1022.8 DAY 9 12 10 23 8 5 22 16 18 31 30 29 MIN. QNH PRESSURE IN HPA 1005.9 1012.2 1006.9 1007.0 1001.2 990.4 991.6 993.9 999.7 1006.9 1011.7 1011.6 990.4 DAY 17 23 25 10 30 29 11 1 2 5 23 11 MEAN QFF PRESSURE IN HPA 1016.8 1015.7 1013.1 1010.1 1005.9 999.2 995.7 998.8 1004.4 1011.5 1015.2 1016.8 1008.6 MAX. QFF PRESSURE IN HPA 1020.4 1018.5 1023.1 1013.6 1010.2 1006.5 999.6 1004.0 1009.1 1017.0 1018.6 1022.9 1023.1 DAY 9 12 10 23 8 5 22 16 18 31 30 29 MIN. QFF PRESSURE IN HPA 1006.2 1012.5 1007.2 1007.3 1001.5 990.6 991.8 994.1 999.9 1007.2 1012.0 1011.9 990.6 DAY 17 23 25 28 30 29 11 1 2 5 23 11 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1015.7 1014.7 1011.9 1009.0 1004.9 998.3 994.9 998.1 1003.6 1010.7 1013.9 1015.6 1007.6 MAX. QFE PRESSURE IN HPA 1019.3 1017.1 1020.2 1012.5 1009.0 1005.9 998.4 1002.7 1008.2 1015.4 1017.4 1021.2 1021.2 DAY 7 12 10 14 7 4 24 16 18 31 29 29 MIN. QFE PRESSURE IN HPA 1006.6 1011.8 1006.3 1006.2 1000.4 989.9 991.0 993.0 999.5 1006.5 1010.2 1011.2 989.9 DAY 17 27 24 10 30 29 10 1 2 5 23 11 MEAN QNH PRESSURE IN HPA 1016.1 1015.1 1012.3 1009.4 1005.3 998.7 995.4 998.5 1004.0 1011.2 1014.4 1016.0 1008.0 MAX. QNH PRESSURE IN HPA 1019.7 1017.5 1020.6 1012.9 1009.4 1006.3 998.8 1003.1 1008.6 1015.8 1017.8 1021.6 1021.6 DAY 7 12 10 14 7 4 24 16 18 31 29 29 MIN. QNH PRESSURE IN HPA 1007.0 1012.2 1006.7 1006.6 1000.8 990.3 991.4 993.4 999.9 1006.9 1010.6 1011.6 990.3 DAY 17 27 24 10 30 29 10 1 2 5 23 11 MEAN QFF PRESSURE IN HPA 1016.4 1015.4 1012.5 1009.7 1005.5 998.9 995.6 998.7 1004.2 1011.4 1014.6 1016.3 1008.3 MAX. QFF PRESSURE IN HPA 1020.0 1017.8 1020.9 1013.2 1009.7 1006.6 999.0 1003.4 1008.9 1016.1 1018.1 1021.9 1021.9 DAY 19 12 10 14 7 4 24 16 18 31 29 29 MIN. QFF PRESSURE IN HPA 1007.3 1012.5 1007.0 1006.9 1001.1 990.5 991.6 993.6 1000.1 1007.2 1010.9 1011.9 990.5 DAY 17 27 24 10 30 29 10 1 2 5 23 11 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 17.2 19.0 22.2 26.6 29.8 33.7 34.3 34.7 32.6 29.2 24.5 22.0 27.1 MINIMUN AIR TEMPERATURE (C) 13.3 14.8 17.7 21.5 24.7 28.2 30.7 31.1 28.2 23.2 18.0 15.4 22.2 DAYS WITH MINIMUM TEMP. >=21 0 0 9 15 31 30 31 31 30 22 2 2 203 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 10.2 11.6 16.8 21.2 25.4 26.0 28.6 24.4 18.6 14.0 11.0 7.0 DAY 15 25 6 7 6 3 3 29 22 29 27 16 MAXIMUM AIR TEMPERATURE (C) 21.9 24.0 26.8 31.7 35.4 40.5 39.3 39.7 38.0 35.3 31.5 28.6 32.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 7 16 27 30 31 31 30 31 28 5 236 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 25.6 27.8 38.0 38.0 44.0 44.6 44.0 44.2 43.8 39.6 34.8 31.6 44.6 DAY 1 8 29 5 28 23 3 9 19 10 14 10 DIF. BETWEEN (MAX.-MIN.) (C) 8.6 9.2 9.1 10.2 10.7 12.3 8.6 8.6 9.8 12.1 13.5 13.2 10.5 MEAN DAILY TEMP. (MDT) (C) 17.6 19.4 22.3 26.6 30.0 34.3 35.0 35.4 33.1 29.3 24.8 22.0 27.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 10.4 74.8 167.3 279.8 400.4 434.1 445.7 363.0 256.0 112.6 32.3 2576.5 HEATING DEG. DAYS(BASE 18 0C) 30.8 10.8 1.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 42.8 DEWPOINT (MEAN C) 12.2 13.0 16.6 19.5 22.0 24.3 27.3 27.5 25.3 20.8 17.6 14.9 20.1 MIXING RATIO (G/KG) 9.09 9.71 12.05 14.55 17.18 20.11 23.71 23.99 21.04 16.26 12.90 11.23 15.99 VAPOUR PRESSURE (HPA) 14.62 15.58 19.23 23.02 26.95 31.21 36.51 37.05 32.77 25.62 20.56 17.98 25.09 SATURATION DEF. (HPA) 5.32 6.86 8.52 12.57 15.92 22.13 18.14 18.73 17.15 15.98 11.10 9.17 13.46 RELATIVE HUMIDITY (MEAN %) 75 70 73 68 67 63 69 69 69 64 68 70 69 RELATIVE HUMIDITY (MAX. %) 91 87 89 87 85 87 87 87 89 82 87 91 87 RELATIVE HUMIDITY (MIN. %) 56 50 55 48 44 35 48 48 46 46 44 46 47 RELATIVE HUMIDITY (MEAN% 03UTC) 86 83 86 82 82 79 83 82 85 79 85 85 83 RELATIVE HUMIDITY (MEAN% 09UTC) 60 54 58 52 50 42 55 51 49 49 47 47 51 RELATIVE HUMIDITY (MEAN% 15UTC) 72 67 71 67 66 60 65 66 67 65 67 68 67 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 237.2 19.7 31.8 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 292.7 DAYS WITH PRECIPITATION >=10 5 1 1 0 0 0 0 0 0 0 0 0 7 DAYS WITH PRECIPITATION >= 5 6 2 2 0 0 0 0 0 0 0 0 0 10 DAYS WITH PRECIPITATION >= 1 9 2 4 1 0 0 0 0 0 0 0 0 16 DAYS WITH PRECIPITATION 9 4 4 1 0 0 0 0 1 0 0 1 20 GREATEST DAILY PRECIPITATION 121.0 11.0 21.0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 121.0 DAY 3 13 1 24 ** ** ** ** ** ** ** ** DAY WITH THUNDER STORM 6 1 4 2 0 0 2 0 0 0 0 0 15 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 2 3 9 14 17 7 13 10 3 6 0 0 84 WIND DIRECTION (PREVAILING) 270 270 225 225 225 225 225 225 225 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 9.3 11.3 9.3 11.8 11.1 9.1 9.8 9.5 9.4 9.7 7.9 7.8 9.9 PREVAILING WIND PERCENT 17.7 17.0 32.7 52.9 67.3 40.0 33.1 38.7 20.8 27.8 22.5 13.3 30.9 CALMS PERCENT OF WIND 40.3 31.3 26.6 30.8 20.6 29.6 18.5 23.8 32.9 43.5 55.8 58.9 34.4 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 282 235 219 223 222 201 150 191 166 211 210 124 210 VECTOR WIND MAGNITUDE(KNOTS) 1.8 0.8 2.7 6.3 7.4 3.0 2.8 2.9 2.0 2.1 1.6 0.2 2.5 WIND STEADINESES (MEAN %) 40.0 13.1 43.5 84.0 89.2 50.8 36.4 45.3 38.5 43.7 51.6 6.9 43.9 WIND SPEED (MEAN KNOTS) 4.5 6.1 6.2 7.5 8.3 5.9 7.7 6.4 5.2 4.8 3.1 2.9 5.7 FASTEST WIND DIRECTION 270 250 250 240 240 240 90 240 220 60 240 90 270 FASTEST WIND SPEED (KNOTS) 49 27 19 29 19 19 21 19 17 17 14 14 49 DAY 13 16 9 6 1 1 15 26 15 11 9 17 DAYS WITH SKY CLEAR (0-2)/8 12 18 15 22 27 30 26 30 29 31 30 25 295 DAYS WITH P.CLOUDY (3-6)/8 11 8 11 6 3 0 4 1 1 0 0 3 48 DAYS WITH CLOUDY (7-8)/8 8 2 5 2 1 0 1 0 0 0 0 3 22 DAYS WITH VISIBILITY =< 2 KM 1 1 3 5 1 6 2 4 2 4 6 18 53 DURATION OF SUNSHINE HOURS 219.3 252.4 237.4 299.4 352.1 348.0 312.9 324.3 293.7 306.7 277.3 242.7 3466.2 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1016.1 1015.0 1012.2 1008.0 1003.8 998.4 995.2 998.2 1002.7 1008.4 1013.3 1015.7 1007.2 MAX. QFE PRESSURE IN HPA 1023.2 1021.8 1018.5 1016.0 1010.5 1005.1 1001.2 1004.5 1008.8 1016.0 1019.3 1020.9 1023.2 DAY-HOUR 4- 6 24- 6 6- 6 12- 6 3- 6 5- 6 22- 6 24- 6 26- 6 29- 6 30- 6 10- 6 MIN. QFE PRESSURE IN HPA 1008.9 1007.3 1006.6 1002.5 997.1 990.4 989.5 992.7 998.6 1002.8 1008.6 1010.1 989.5 DAY-HOUR 13- 6 13- 0 30-15 21-12 30-15 30-15 8-15 13-12 1- 0 1-12 17-12 21-12 MEAN QNH PRESSURE IN HPA 1016.5 1015.4 1012.6 1008.4 1004.2 998.8 995.6 998.6 1003.1 1008.8 1013.7 1016.1 1007.6 MAX. QNH PRESSURE IN HPA 1023.6 1022.2 1018.9 1016.4 1010.9 1005.5 1001.6 1004.9 1009.2 1016.4 1019.7 1021.3 1023.6 DAY-HOUR 4- 6 24- 6 6- 6 12- 6 3- 6 5- 6 22- 6 24- 6 26- 6 29- 6 30- 6 10- 6 MIN. QNH PRESSURE IN HPA 1009.3 1007.7 1007.0 1002.9 997.5 990.8 989.9 993.1 999.0 1003.2 1009.0 1010.5 989.9 DAY-HOUR 13- 6 13- 0 30-15 21-12 30-15 30-15 8-15 13-12 1- 0 1-12 17-12 21-12 MEAN QFF PRESSURE IN HPA 1016.8 1015.7 1012.9 1008.6 1004.4 999.0 995.8 998.8 1003.4 1009.1 1014.0 1016.3 1007.9 MAX. QFF PRESSURE IN HPA 1023.9 1022.5 1019.2 1016.7 1011.2 1005.8 1001.9 1005.2 1009.5 1016.7 1020.0 1021.6 1023.9 DAY-HOUR 4- 6 24- 6 6- 6 12- 6 3- 6 5- 6 22- 6 24- 6 26- 6 29- 6 30- 6 10- 6 MIN. QFF PRESSURE IN HPA 1009.6 1008.0 1007.3 1003.2 997.8 991.0 990.1 993.3 999.2 1003.5 1009.3 1010.8 990.1 DAY-HOUR 13- 6 13- 0 30-15 22- 0 30-15 30-15 8-15 13-12 1- 0 1-12 17-12 21-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1015.3 1014.3 1011.4 1007.2 1002.8 997.7 994.3 997.5 1001.8 1007.6 1012.5 1015.1 1006.5 MAX. QFE PRESSURE IN HPA 1019.2 1018.7 1014.9 1012.6 1007.8 1002.0 998.7 1002.0 1006.4 1013.0 1015.0 1018.0 1019.2 DAY 4 4 7 12 8 5 19 25 26 29 27 7 MIN. QFE PRESSURE IN HPA 1011.2 1007.3 1006.8 1002.5 997.3 992.0 990.5 993.2 998.6 1003.0 1009.5 1010.5 990.5 DAY 13 13 30 22 31 30 9 13 1 1 18 21 MEAN QNH PRESSURE IN HPA 1015.7 1014.7 1011.8 1007.6 1003.3 998.1 994.7 997.9 1002.2 1008.0 1012.9 1015.5 1006.9 MAX. QNH PRESSURE IN HPA 1019.6 1019.1 1015.3 1013.0 1008.2 1002.4 999.1 1002.4 1006.8 1013.4 1015.4 1018.4 1019.6 DAY 4 4 7 12 8 5 19 25 26 29 27 7 MIN. QNH PRESSURE IN HPA 1011.6 1007.7 1007.2 1002.9 997.7 992.4 990.9 993.6 999.0 1003.4 1009.9 1010.9 990.9 DAY 13 13 30 22 31 30 9 13 1 1 18 21 MEAN QFF PRESSURE IN HPA 1016.0 1015.0 1012.1 1007.8 1003.5 998.4 995.0 998.1 1002.4 1008.2 1013.2 1015.8 1007.1 MAX. QFF PRESSURE IN HPA 1019.9 1019.4 1015.6 1013.3 1008.5 1002.7 999.3 1002.7 1007.1 1013.7 1015.7 1018.7 1019.9 DAY 4 4 7 12 8 5 19 25 26 29 27 7 MIN. QFF PRESSURE IN HPA 1011.9 1008.0 1007.5 1003.2 998.0 992.6 991.1 993.8 999.2 1003.7 1010.2 1011.2 991.1 DAY 13 13 30 22 31 30 9 13 1 1 18 21 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1016.1 1015.1 1012.4 1008.5 1004.3 999.3 995.9 999.1 1003.6 1009.1 1014.0 1016.2 1007.8 MAX. QFE PRESSURE IN HPA 1021.3 1019.7 1016.0 1015.0 1009.4 1003.9 1000.0 1004.0 1007.7 1014.8 1017.3 1019.4 1021.3 DAY 4 24 12 12 8 5 23 25 26 25 30 10 MIN. QFE PRESSURE IN HPA 1009.3 1008.8 1007.1 1003.6 999.4 993.1 991.9 994.1 1000.4 1004.0 1010.8 1011.0 991.9 DAY 13 13 30 30 30 30 8 13 1 1 18 21 MEAN QNH PRESSURE IN HPA 1016.5 1015.5 1012.8 1009.0 1004.8 999.7 996.4 999.5 1004.0 1009.5 1014.4 1016.6 1008.2 MAX. QNH PRESSURE IN HPA 1021.7 1020.1 1016.4 1015.4 1009.8 1004.3 1000.4 1004.4 1008.1 1015.2 1017.7 1019.8 1021.7 DAY 4 24 12 12 8 5 23 25 26 25 30 10 MIN. QNH PRESSURE IN HPA 1009.7 1009.2 1007.5 1004.0 999.8 993.5 992.3 994.5 1000.8 1004.4 1011.2 1011.4 992.3 DAY 13 13 30 30 30 30 8 13 1 1 18 21 MEAN QFF PRESSURE IN HPA 1016.8 1015.8 1013.1 1009.2 1005.0 1000.0 996.6 999.7 1004.3 1009.8 1014.7 1016.9 1008.5 MAX. QFF PRESSURE IN HPA 1022.0 1020.4 1016.7 1015.7 1010.1 1004.6 1000.7 1004.7 1008.4 1015.5 1018.0 1020.1 1022.0 DAY 4 24 12 12 8 5 23 25 26 25 30 10 MIN. QFF PRESSURE IN HPA 1010.0 1009.5 1007.8 1004.3 1000.1 993.8 992.6 994.7 1001.1 1004.7 1011.5 1011.7 992.6 DAY 13 13 30 30 31 30 8 13 1 1 18 21 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1018.0 1017.0 1014.0 1009.8 1005.7 1000.1 996.8 1000.0 1004.7 1010.5 1015.5 1017.9 1009.2 MAX. QFE PRESSURE IN HPA 1023.2 1021.8 1018.5 1016.0 1010.5 1005.1 1001.2 1004.5 1008.8 1016.0 1019.3 1020.9 1023.2 DAY 4 24 6 12 3 5 22 24 26 29 30 10 MIN. QFE PRESSURE IN HPA 1008.9 1010.9 1008.8 1005.2 1000.9 993.5 992.1 994.7 1001.4 1005.2 1012.4 1013.0 992.1 DAY 13 13 30 30 30 30 8 13 1 1 17 21 MEAN QNH PRESSURE IN HPA 1018.4 1017.5 1014.5 1010.3 1006.1 1000.5 997.2 1000.5 1005.1 1010.9 1015.9 1018.3 1009.6 MAX. QNH PRESSURE IN HPA 1023.6 1022.2 1018.9 1016.4 1010.9 1005.5 1001.6 1004.9 1009.2 1016.4 1019.7 1021.3 1023.6 DAY 4 24 6 12 3 5 22 24 26 29 30 10 MIN. QNH PRESSURE IN HPA 1009.3 1011.3 1009.2 1005.6 1001.3 993.9 992.5 995.1 1001.8 1005.6 1012.8 1013.4 992.5 DAY 13 13 30 30 30 30 8 13 1 1 17 21 MEAN QFF PRESSURE IN HPA 1018.7 1017.8 1014.7 1010.5 1006.3 1000.7 997.4 1000.7 1005.4 1011.1 1016.2 1018.6 1009.8 MAX. QFF PRESSURE IN HPA 1023.9 1022.5 1019.2 1016.7 1011.2 1005.8 1001.9 1005.2 1009.5 1016.7 1020.0 1021.6 1023.9 DAY 4 24 6 12 3 5 22 24 26 29 30 10 MIN. QFF PRESSURE IN HPA 1009.6 1011.6 1009.5 1005.9 1001.6 994.1 992.8 995.3 1002.1 1005.9 1013.1 1013.7 992.8 DAY 13 13 30 30 30 30 8 13 1 1 17 21 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1016.5 1015.6 1013.0 1009.1 1005.0 999.4 996.1 999.1 1003.4 1008.8 1013.5 1015.7 1007.9 MAX. QFE PRESSURE IN HPA 1020.9 1020.3 1016.9 1015.0 1010.0 1003.8 1000.6 1003.3 1007.4 1014.2 1017.4 1018.3 1020.9 DAY 4 24 6 12 3 5 22 25 26 25 30 10 MIN. QFE PRESSURE IN HPA 1009.5 1010.2 1008.5 1004.1 999.3 992.6 991.5 994.1 1000.2 1004.0 1010.0 1010.8 991.5 DAY 13 13 15 30 30 30 8 13 2 1 17 21 MEAN QNH PRESSURE IN HPA 1016.9 1016.0 1013.4 1009.5 1005.4 999.8 996.5 999.6 1003.9 1009.3 1013.9 1016.1 1008.3 MAX. QNH PRESSURE IN HPA 1021.3 1020.7 1017.3 1015.4 1010.4 1004.2 1001.0 1003.7 1007.8 1014.6 1017.8 1018.7 1021.3 DAY 4 24 6 12 3 5 22 25 26 25 30 10 MIN. QNH PRESSURE IN HPA 1009.9 1010.6 1008.9 1004.5 999.7 993.0 991.9 994.5 1000.6 1004.4 1010.4 1011.2 991.9 DAY 13 13 15 30 30 30 8 13 2 1 17 21 MEAN QFF PRESSURE IN HPA 1017.2 1016.3 1013.7 1009.7 1005.6 1000.0 996.7 999.8 1004.1 1009.5 1014.2 1016.4 1008.6 MAX. QFF PRESSURE IN HPA 1021.6 1021.0 1017.6 1015.7 1010.7 1004.5 1001.3 1004.0 1008.1 1014.9 1018.1 1019.0 1021.6 DAY 4 24 6 12 3 5 22 25 26 25 30 10 MIN. QFF PRESSURE IN HPA 1010.2 1010.9 1009.2 1004.8 1000.0 993.2 992.2 994.7 1000.9 1004.7 1010.7 1011.5 992.2 DAY 13 13 15 30 30 30 8 13 2 1 17 21 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1015.0 1013.8 1011.3 1007.1 1003.1 997.6 994.2 997.3 1001.6 1007.3 1012.0 1014.4 1006.2 MAX. QFE PRESSURE IN HPA 1019.4 1018.0 1017.1 1012.6 1008.0 1001.6 998.5 1001.1 1005.7 1013.0 1016.0 1017.5 1019.4 DAY 4 24 7 12 3 5 22 24 25 25 30 6 MIN. QFE PRESSURE IN HPA 1010.0 1008.3 1006.8 1002.5 998.0 991.1 990.1 992.7 998.7 1002.8 1008.6 1010.1 990.1 DAY 13 12 15 21 30 30 8 13 1 1 17 21 MEAN QNH PRESSURE IN HPA 1015.4 1014.2 1011.7 1007.6 1003.5 998.0 994.6 997.7 1002.0 1007.7 1012.4 1014.8 1006.6 MAX. QNH PRESSURE IN HPA 1019.8 1018.4 1017.5 1013.0 1008.4 1002.0 998.9 1001.5 1006.1 1013.4 1016.4 1017.9 1019.8 DAY 4 24 7 12 3 5 22 24 25 25 30 6 MIN. QNH PRESSURE IN HPA 1010.4 1008.7 1007.2 1002.9 998.4 991.5 990.5 993.1 999.1 1003.2 1009.0 1010.5 990.5 DAY 13 12 15 21 30 30 8 13 1 1 17 21 MEAN QFF PRESSURE IN HPA 1015.7 1014.5 1011.9 1007.8 1003.7 998.2 994.9 997.9 1002.3 1008.0 1012.7 1015.1 1006.9 MAX. QFF PRESSURE IN HPA 1020.1 1018.7 1017.8 1013.3 1008.7 1002.3 999.1 1001.8 1006.4 1013.7 1016.7 1018.2 1020.1 DAY 4 24 7 12 3 5 22 24 25 25 30 6 MIN. QFF PRESSURE IN HPA 1010.7 1009.0 1007.5 1003.2 998.7 991.7 990.7 993.3 999.4 1003.5 1009.3 1010.8 990.7 DAY 13 12 15 21 30 30 8 13 1 1 17 21 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1015.5 1014.2 1011.3 1006.9 1002.7 997.0 993.9 996.8 1001.5 1007.5 1012.6 1014.9 1006.2 MAX. QFE PRESSURE IN HPA 1020.4 1018.5 1015.6 1012.4 1007.6 1001.6 997.7 1001.0 1005.7 1013.3 1016.7 1018.0 1020.4 DAY 4 4 7 11 7 15 22 23 25 25 30 6 MIN. QFE PRESSURE IN HPA 1010.2 1008.8 1006.6 1002.7 997.1 990.4 989.5 992.7 998.7 1002.9 1009.0 1010.5 989.5 DAY 2 12 30 21 30 30 8 13 1 3 13 21 MEAN QNH PRESSURE IN HPA 1015.9 1014.6 1011.7 1007.3 1003.1 997.4 994.3 997.3 1001.9 1008.0 1013.0 1015.3 1006.6 MAX. QNH PRESSURE IN HPA 1020.8 1018.9 1016.0 1012.8 1008.0 1002.0 998.1 1001.4 1006.1 1013.7 1017.1 1018.4 1020.8 DAY 4 4 7 11 7 15 22 23 25 25 30 6 MIN. QNH PRESSURE IN HPA 1010.6 1009.2 1007.0 1003.1 997.5 990.8 989.9 993.1 999.1 1003.3 1009.4 1010.9 989.9 DAY 2 12 30 21 30 30 8 13 1 3 13 21 MEAN QFF PRESSURE IN HPA 1016.2 1014.9 1012.0 1007.5 1003.3 997.7 994.5 997.5 1002.2 1008.2 1013.2 1015.6 1006.9 MAX. QFF PRESSURE IN HPA 1021.1 1019.2 1016.3 1013.1 1008.3 1002.3 998.4 1001.7 1006.4 1014.0 1017.4 1018.7 1021.1 DAY 4 4 7 11 7 15 22 23 25 25 30 6 MIN. QFF PRESSURE IN HPA 1010.9 1009.5 1007.3 1003.4 997.8 991.0 990.1 993.3 999.4 1003.6 1009.7 1011.2 990.1 DAY 2 12 30 21 30 30 8 13 1 3 17 21 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1016.4 1015.1 1012.3 1007.8 1003.3 998.0 995.1 997.9 1002.7 1008.5 1013.5 1015.7 1007.2 MAX. QFE PRESSURE IN HPA 1020.6 1019.3 1016.0 1013.6 1008.2 1002.7 998.9 1001.9 1007.4 1014.0 1017.3 1018.8 1020.6 DAY 4 4 5 11 7 15 22 24 25 25 30 6 MIN. QFE PRESSURE IN HPA 1012.5 1008.5 1007.7 1003.1 998.0 991.1 990.4 993.8 999.5 1004.2 1009.8 1011.3 990.4 DAY 29 12 15 21 30 30 1 12 1 3 17 20 MEAN QNH PRESSURE IN HPA 1016.9 1015.6 1012.7 1008.2 1003.7 998.4 995.5 998.3 1003.1 1008.9 1013.9 1016.1 1007.6 MAX. QNH PRESSURE IN HPA 1021.0 1019.7 1016.4 1014.0 1008.6 1003.1 999.3 1002.3 1007.8 1014.4 1017.7 1019.2 1021.0 DAY 4 4 5 11 7 15 22 24 25 25 30 6 MIN. QNH PRESSURE IN HPA 1012.9 1008.9 1008.1 1003.5 998.4 991.5 990.8 994.2 999.9 1004.6 1010.2 1011.7 990.8 DAY 29 12 15 21 30 30 1 12 1 3 17 20 MEAN QFF PRESSURE IN HPA 1017.2 1015.8 1013.0 1008.5 1004.0 998.6 995.7 998.6 1003.4 1009.1 1014.2 1016.4 1007.9 MAX. QFF PRESSURE IN HPA 1021.3 1020.0 1016.7 1014.3 1008.9 1003.4 999.5 1002.6 1008.1 1014.7 1018.0 1019.5 1021.3 DAY 4 4 5 11 7 15 22 24 25 25 30 6 MIN. QFF PRESSURE IN HPA 1013.2 1009.2 1008.4 1003.8 998.7 991.7 991.0 994.4 1000.1 1004.9 1010.5 1012.0 991.0 DAY 29 12 15 21 30 30 1 12 1 3 17 20 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1015.9 1014.7 1012.0 1007.5 1003.3 998.0 995.1 998.0 1002.5 1008.2 1013.1 1015.5 1007.0 MAX. QFE PRESSURE IN HPA 1019.6 1019.2 1015.7 1013.6 1008.6 1002.7 999.4 1002.5 1007.0 1013.4 1016.7 1018.4 1019.6 DAY 3 3 5 11 7 15 18 24 25 25 30 6 MIN. QFE PRESSURE IN HPA 1011.8 1007.8 1007.4 1003.1 997.8 991.5 991.0 993.6 999.5 1003.9 1009.8 1011.0 991.0 DAY 29 12 29 21 30 30 8 12 1 1 17 20 MEAN QNH PRESSURE IN HPA 1016.3 1015.2 1012.4 1007.9 1003.7 998.4 995.5 998.4 1003.0 1008.7 1013.5 1015.9 1007.4 MAX. QNH PRESSURE IN HPA 1020.0 1019.6 1016.1 1014.0 1009.0 1003.1 999.8 1002.9 1007.4 1013.8 1017.1 1018.8 1020.0 DAY 3 3 5 11 7 15 18 24 25 25 30 6 MIN. QNH PRESSURE IN HPA 1012.2 1008.2 1007.8 1003.5 998.2 991.9 991.4 994.0 999.9 1004.3 1010.2 1011.4 991.4 DAY 29 12 29 21 30 30 8 12 1 1 17 20 MEAN QFF PRESSURE IN HPA 1016.6 1015.4 1012.7 1008.2 1004.0 998.7 995.7 998.6 1003.2 1008.9 1013.8 1016.2 1007.7 MAX. QFF PRESSURE IN HPA 1020.3 1019.9 1016.4 1014.3 1009.3 1003.4 1000.0 1003.2 1007.7 1014.1 1017.4 1019.1 1020.3 DAY 3 3 5 11 7 15 18 24 25 25 30 6 MIN. QFF PRESSURE IN HPA 1012.5 1008.5 1008.1 1003.8 998.5 992.1 991.6 994.2 1000.1 1004.6 1010.5 1011.7 991.6 DAY 29 12 29 21 30 30 8 12 1 1 17 20 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 18.9 21.3 22.0 26.8 30.8 32.9 33.5 33.9 31.8 29.2 25.1 20.0 27.2 MINIMUN AIR TEMPERATURE (C) 13.5 16.6 16.6 20.7 25.3 28.6 29.5 30.0 28.4 24.3 19.9 14.2 22.3 DAYS WITH MINIMUM TEMP. >=21 0 0 4 16 31 30 31 31 30 31 10 0 214 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) 8.0 12.5 12.4 18.0 22.6 24.4 25.4 28.0 25.8 21.6 16.2 9.4 8.0 DAY 6 18 8 1 7 1 4 1 30 29 20 26 MAXIMUM AIR TEMPERATURE (C) 24.0 25.8 27.0 33.0 36.7 37.8 38.3 39.1 36.8 34.8 30.5 26.7 32.5 DAYS WITH MAXIMUM TEMP. >=30 0 1 5 21 31 30 31 31 30 31 20 0 231 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 26.6 30.6 35.0 39.8 43.8 44.0 44.0 42.8 42.0 40.6 32.6 28.4 44.0 DAY 14 28 27 28 29 1 20 10 2 12 2 3 DIF. BETWEEN (MAX.-MIN.) (C) 10.5 9.2 10.4 12.3 11.4 9.2 8.8 9.1 8.4 10.5 10.6 12.5 10.2 MEAN DAILY TEMP. (MDT) (C) 18.8 21.2 21.8 26.9 31.0 33.2 33.9 34.5 32.6 29.5 25.2 20.5 27.4 COOLING DEG. DAYS(BASE 21 0C) 3.3 23.2 42.8 175.5 309.8 366.5 398.9 418.8 349.0 264.7 125.8 12.6 2491.0 HEATING DEG. DAYS(BASE 18 0C) 17.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 17.8 DEWPOINT (MEAN C) 10.6 16.0 14.5 18.7 20.1 26.1 26.0 26.3 24.9 21.9 17.8 9.3 19.3 MIXING RATIO (G/KG) 8.46 11.53 10.74 13.95 15.95 22.18 22.06 22.37 20.48 17.14 13.27 7.73 15.49 VAPOUR PRESSURE (HPA) 13.60 18.46 17.11 22.05 24.97 34.33 34.06 34.60 31.92 27.01 21.13 12.46 24.31 SATURATION DEF. (HPA) 8.71 7.20 9.91 14.14 20.66 16.30 18.24 18.85 15.72 14.34 11.49 11.69 13.94 RELATIVE HUMIDITY (MEAN %) 62 74 66 65 61 70 68 67 69 69 66 55 66 RELATIVE HUMIDITY (MAX. %) 82 91 86 85 82 88 85 85 87 88 85 77 85 RELATIVE HUMIDITY (MIN. %) 43 53 45 42 39 49 47 46 48 46 49 34 45 RELATIVE HUMIDITY (MEAN% 03UTC) 74 86 82 79 77 83 81 81 84 86 81 68 80 RELATIVE HUMIDITY (MEAN% 09UTC) 48 59 48 45 44 53 51 51 50 48 51 34 49 RELATIVE HUMIDITY (MEAN% 15UTC) 60 71 63 67 60 68 62 63 66 69 66 52 64 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 34.0 52.4 21.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12.4 0.0 120.4 DAYS WITH PRECIPITATION >=10 1 1 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 2 1 3 0 0 0 0 0 0 0 1 0 7 DAYS WITH PRECIPITATION >= 1 3 3 5 0 0 0 0 0 0 0 2 0 13 DAYS WITH PRECIPITATION 3 7 5 0 0 0 0 0 0 0 3 0 18 GREATEST DAILY PRECIPITATION 25.0 48.0 6.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8.0 0.0 48.0 DAY 10 13 2 ** ** ** ** ** ** ** 21 ** DAY WITH THUNDER STORM 1 2 4 0 0 0 0 1 0 0 2 0 10 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 3 2 8 9 12 14 17 13 6 4 0 5 93 WIND DIRECTION (PREVAILING) 45 45 225 225 225 225 225 45 45 225 225 45 225 PREVAILING WIND SPEED(KNOTS) 7.9 6.1 11.6 12.2 11.3 12.1 11.8 9.5 8.0 9.8 8.9 8.6 10.8 PREVAILING WIND PERCENT 16.9 20.1 34.3 47.1 38.7 35.8 31.5 27.0 29.6 25.4 23.8 22.6 25.3 CALMS PERCENT OF WIND 45.2 39.7 25.4 30.4 29.0 25.0 18.5 19.4 22.1 44.0 50.8 41.9 32.6 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 27 143 210 206 197 192 163 98 95 192 201 32 180 VECTOR WIND MAGNITUDE(KNOTS) 0.4 0.4 3.1 6.5 5.1 4.3 3.1 3.1 3.0 2.3 2.2 0.9 2.1 WIND STEADINESES (MEAN %) 9.8 9.8 43.1 85.5 70.8 56.6 37.8 41.9 46.2 47.9 55.0 20.0 34.4 WIND SPEED (MEAN KNOTS) 4.1 4.1 7.2 7.6 7.2 7.6 8.2 7.4 6.5 4.8 4.0 4.5 6.1 FASTEST WIND DIRECTION 60 250 280 220 210 220 210 30 60 220 60 60 30 FASTEST WIND SPEED (KNOTS) 19 17 21 29 19 21 29 31 21 19 17 19 31 DAY 3 6 2 10 2 30 1 17 19 17 5 18 DAYS WITH SKY CLEAR (0-2)/8 20 10 23 30 31 30 31 29 29 30 27 28 318 DAYS WITH P.CLOUDY (3-6)/8 6 11 5 0 0 0 0 2 1 1 3 3 32 DAYS WITH CLOUDY (7-8)/8 5 7 3 0 0 0 0 0 0 0 0 0 15 DAYS WITH VISIBILITY =< 2 KM 4 4 0 1 6 4 2 2 0 3 0 0 26 DURATION OF SUNSHINE HOURS 224.7 172.1 275.1 317.0 347.3 316.1 310.3 294.3 288.2 298.6 258.2 277.5 3379.4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1015.0 1014.5 1010.1 1006.8 1001.1 997.7 995.2 997.7 1002.4 1008.5 1012.9 1016.9 1006.6 MAX. QFE PRESSURE IN HPA 1020.0 1020.2 1015.7 1013.0 1006.7 1004.5 1001.0 1003.8 1009.2 1013.6 1019.1 1021.4 1021.4 DAY-HOUR 16- 6 12- 6 20- 6 12- 6 1- 6 2- 6 8- 3 19- 6 29- 6 23- 6 14- 6 24- 6 MIN. QFE PRESSURE IN HPA 1007.6 1010.0 1006.1 1001.5 995.3 993.5 990.0 991.8 998.1 1003.6 1006.3 1011.7 990.0 DAY-HOUR 18-15 28-12 3- 0 27-12 21-15 23-15 20-15 7-15 6-15 8-12 1-12 31-12 MEAN QNH PRESSURE IN HPA 1015.4 1014.9 1010.5 1007.2 1001.5 998.1 995.6 998.1 1002.8 1008.9 1013.3 1017.3 1007.0 MAX. QNH PRESSURE IN HPA 1020.4 1020.6 1016.1 1013.4 1007.1 1004.9 1001.4 1004.2 1009.6 1014.0 1019.5 1021.8 1021.8 DAY-HOUR 16- 6 12- 6 20- 6 12- 6 1- 6 2- 6 8- 3 19- 6 29- 6 23- 6 14- 6 24- 6 MIN. QNH PRESSURE IN HPA 1008.0 1010.4 1006.5 1001.9 995.7 993.9 990.4 992.2 998.5 1004.0 1006.7 1012.1 990.4 DAY-HOUR 18-15 28-12 3- 0 27-12 21-15 23-15 20-15 7-15 6-15 8-12 1-12 31-12 MEAN QFF PRESSURE IN HPA 1015.7 1015.2 1010.8 1007.5 1001.8 998.3 995.8 998.3 1003.0 1009.1 1013.6 1017.6 1007.2 MAX. QFF PRESSURE IN HPA 1020.7 1020.9 1016.4 1013.7 1007.4 1005.2 1001.7 1004.5 1009.9 1014.3 1019.8 1022.1 1022.1 DAY-HOUR 16- 6 12- 6 20- 6 12- 6 1- 6 2- 6 8- 3 19- 6 30- 6 23- 6 14- 6 24- 6 MIN. QFF PRESSURE IN HPA 1008.3 1010.7 1006.8 1002.2 996.0 994.2 990.6 992.5 998.8 1004.3 1007.0 1012.4 990.6 DAY-HOUR 18-15 28-12 3- 0 27-12 21-15 23-15 20-15 7-15 6-15 8-12 1-12 31-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1014.4 1013.7 1009.3 1005.9 1000.4 997.2 994.9 997.4 1001.7 1007.8 1012.0 1016.3 1005.9 MAX. QFE PRESSURE IN HPA 1016.9 1016.7 1013.3 1009.4 1004.5 1002.0 999.4 1002.9 1006.8 1010.6 1015.4 1018.2 1018.2 DAY 12 18 20 5 1 2 9 19 29 24 15 23 MIN. QFE PRESSURE IN HPA 1007.7 1010.7 1006.1 1001.5 996.4 994.0 991.6 992.6 999.1 1004.8 1007.2 1012.6 991.6 DAY 19 6 3 28 21 23 20 7 7 4 1 27 MEAN QNH PRESSURE IN HPA 1014.8 1014.2 1009.7 1006.3 1000.8 997.6 995.3 997.8 1002.1 1008.2 1012.4 1016.7 1006.3 MAX. QNH PRESSURE IN HPA 1017.3 1017.1 1013.7 1009.8 1004.9 1002.4 999.8 1003.3 1007.2 1011.0 1015.8 1018.6 1018.6 DAY 12 18 20 5 1 2 9 19 29 24 15 23 MIN. QNH PRESSURE IN HPA 1008.1 1011.1 1006.5 1001.9 996.8 994.4 992.0 993.0 999.5 1005.2 1007.6 1013.0 992.0 DAY 19 6 3 28 21 23 20 7 7 4 1 27 MEAN QFF PRESSURE IN HPA 1015.1 1014.4 1009.9 1006.6 1001.0 997.8 995.6 998.1 1002.4 1008.5 1012.7 1017.0 1006.6 MAX. QFF PRESSURE IN HPA 1017.6 1017.4 1014.0 1010.1 1005.2 1002.7 1000.1 1003.6 1007.5 1011.3 1016.1 1018.9 1018.9 DAY 12 18 20 5 1 2 9 19 29 24 15 23 MIN. QFF PRESSURE IN HPA 1008.4 1011.4 1006.8 1002.2 997.1 994.7 992.2 993.2 999.7 1005.5 1007.9 1013.3 992.2 DAY 19 21 3 28 21 23 20 7 7 4 1 27 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1015.3 1014.8 1010.4 1007.5 1002.1 998.5 996.0 998.5 1003.0 1009.3 1013.3 1017.4 1007.2 MAX. QFE PRESSURE IN HPA 1018.1 1018.5 1014.4 1011.0 1005.5 1003.6 1001.0 1003.3 1008.1 1011.9 1017.1 1019.9 1019.9 DAY 25 13 20 12 1 1 8 19 29 16 14 24 MIN. QFE PRESSURE IN HPA 1008.5 1010.7 1007.3 1004.0 998.0 995.0 992.5 993.8 1000.3 1006.3 1008.2 1013.4 992.5 DAY 19 6 28 27 21 24 20 7 7 8 1 31 MEAN QNH PRESSURE IN HPA 1015.7 1015.2 1010.8 1007.9 1002.5 998.9 996.4 998.9 1003.5 1009.7 1013.7 1017.8 1007.6 MAX. QNH PRESSURE IN HPA 1018.5 1018.9 1014.8 1011.4 1005.9 1004.0 1001.4 1003.7 1008.5 1012.3 1017.5 1020.3 1020.3 DAY 25 13 20 12 1 1 8 19 29 16 14 24 MIN. QNH PRESSURE IN HPA 1008.9 1011.1 1007.7 1004.4 998.4 995.4 992.9 994.2 1000.7 1006.7 1008.6 1013.8 992.9 DAY 19 6 28 27 21 24 20 7 7 8 1 31 MEAN QFF PRESSURE IN HPA 1016.0 1015.5 1011.1 1008.2 1002.8 999.1 996.7 999.1 1003.7 1010.0 1014.0 1018.1 1007.8 MAX. QFF PRESSURE IN HPA 1018.8 1019.2 1015.1 1011.7 1006.2 1004.3 1001.7 1004.0 1008.8 1012.6 1017.8 1020.6 1020.6 DAY 25 13 20 12 1 1 8 19 29 16 14 24 MIN. QFF PRESSURE IN HPA 1009.2 1011.4 1008.0 1004.7 998.7 995.7 993.1 994.5 1001.0 1007.0 1008.9 1014.1 993.1 DAY 19 6 28 27 21 24 20 7 7 8 1 31 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1017.0 1016.6 1012.2 1009.0 1003.2 999.4 996.8 999.4 1004.3 1010.6 1014.9 1019.1 1008.5 MAX. QFE PRESSURE IN HPA 1020.0 1020.2 1015.7 1013.0 1006.7 1004.5 1001.0 1003.8 1009.2 1013.6 1019.1 1021.4 1021.4 DAY 16 12 20 12 1 2 8 19 29 23 14 24 MIN. QFE PRESSURE IN HPA 1009.6 1012.4 1008.6 1004.9 998.7 996.1 992.9 994.1 1001.5 1007.2 1009.2 1015.2 992.9 DAY 18 28 2 27 21 23 20 7 10 8 4 31 MEAN QNH PRESSURE IN HPA 1017.4 1017.0 1012.6 1009.4 1003.6 999.8 997.2 999.8 1004.7 1011.0 1015.3 1019.5 1008.9 MAX. QNH PRESSURE IN HPA 1020.4 1020.6 1016.1 1013.4 1007.1 1004.9 1001.4 1004.2 1009.6 1014.0 1019.5 1021.8 1021.8 DAY 16 12 20 12 1 2 8 19 29 23 14 24 MIN. QNH PRESSURE IN HPA 1010.0 1012.8 1009.0 1005.3 999.1 996.5 993.3 994.5 1001.9 1007.6 1009.6 1015.6 993.3 DAY 18 28 2 27 21 23 20 7 10 8 4 31 MEAN QFF PRESSURE IN HPA 1017.7 1017.3 1012.9 1009.6 1003.9 1000.1 997.4 1000.1 1005.0 1011.3 1015.6 1019.8 1009.2 MAX. QFF PRESSURE IN HPA 1020.7 1020.9 1016.4 1013.7 1007.4 1005.2 1001.7 1004.5 1009.9 1014.3 1019.8 1022.1 1022.1 DAY 16 12 20 12 1 2 8 19 30 23 14 24 MIN. QFF PRESSURE IN HPA 1010.3 1013.1 1009.3 1005.6 999.4 996.8 993.5 994.7 1002.2 1007.9 1009.9 1015.9 993.5 DAY 18 28 2 27 21 23 20 7 10 8 4 31 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1015.3 1015.2 1011.1 1007.8 1002.3 998.7 995.9 998.3 1003.0 1008.8 1013.1 1017.1 1007.2 MAX. QFE PRESSURE IN HPA 1018.4 1019.7 1014.6 1011.9 1006.0 1003.4 999.7 1003.0 1007.2 1011.7 1016.9 1019.6 1019.7 DAY 25 12 19 11 1 1 7 19 28 23 14 23 MIN. QFE PRESSURE IN HPA 1008.6 1011.6 1007.7 1003.6 997.9 995.4 992.0 993.0 1000.0 1005.1 1007.6 1013.2 992.0 DAY 18 28 28 27 21 23 20 7 17 8 1 31 MEAN QNH PRESSURE IN HPA 1015.7 1015.6 1011.5 1008.3 1002.7 999.1 996.3 998.7 1003.5 1009.3 1013.5 1017.5 1007.6 MAX. QNH PRESSURE IN HPA 1018.8 1020.1 1015.0 1012.3 1006.4 1003.8 1000.1 1003.4 1007.6 1012.1 1017.3 1020.0 1020.1 DAY 25 12 19 11 1 1 7 19 28 23 14 23 MIN. QNH PRESSURE IN HPA 1009.0 1012.0 1008.1 1004.0 998.3 995.8 992.4 993.4 1000.4 1005.5 1008.0 1013.6 992.4 DAY 18 28 28 27 21 23 20 7 17 8 1 31 MEAN QFF PRESSURE IN HPA 1016.0 1015.9 1011.8 1008.5 1002.9 999.3 996.6 999.0 1003.7 1009.5 1013.8 1017.8 1007.9 MAX. QFF PRESSURE IN HPA 1019.1 1020.4 1015.3 1012.6 1006.7 1004.0 1000.4 1003.7 1007.9 1012.4 1017.6 1020.3 1020.4 DAY 25 12 19 11 1 1 7 19 28 23 14 23 MIN. QFF PRESSURE IN HPA 1009.3 1012.3 1008.4 1004.3 998.6 996.0 992.6 993.6 1000.7 1005.8 1008.3 1013.9 992.6 DAY 18 28 28 27 21 23 20 7 17 8 1 31 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1013.8 1013.3 1009.1 1005.9 1000.3 997.0 994.2 996.6 1001.2 1007.3 1011.7 1015.6 1005.5 MAX. QFE PRESSURE IN HPA 1016.6 1017.3 1013.0 1009.9 1003.7 1001.5 997.8 1001.1 1005.6 1010.6 1015.5 1018.2 1018.2 DAY 25 12 19 11 6 1 7 19 29 23 14 23 MIN. QFE PRESSURE IN HPA 1007.8 1010.0 1006.3 1001.5 996.1 994.0 990.7 992.0 998.4 1003.6 1006.3 1011.7 990.7 DAY 18 28 28 27 21 23 20 7 17 8 1 31 MEAN QNH PRESSURE IN HPA 1014.2 1013.7 1009.5 1006.3 1000.7 997.4 994.6 997.0 1001.7 1007.7 1012.1 1016.0 1005.9 MAX. QNH PRESSURE IN HPA 1017.0 1017.7 1013.4 1010.3 1004.1 1001.9 998.2 1001.5 1006.0 1011.0 1015.9 1018.6 1018.6 DAY 25 12 19 11 6 1 7 19 29 23 14 23 MIN. QNH PRESSURE IN HPA 1008.2 1010.4 1006.7 1001.9 996.5 994.4 991.1 992.4 998.8 1004.0 1006.7 1012.1 991.1 DAY 18 28 28 27 21 23 20 7 17 8 1 31 MEAN QFF PRESSURE IN HPA 1014.5 1014.0 1009.8 1006.5 1000.9 997.6 994.9 997.2 1001.9 1008.0 1012.4 1016.3 1006.2 MAX. QFF PRESSURE IN HPA 1017.3 1018.0 1013.7 1010.6 1004.4 1002.2 998.5 1001.8 1006.3 1011.3 1016.2 1018.9 1018.9 DAY 25 12 19 11 6 1 7 19 29 23 14 23 MIN. QFF PRESSURE IN HPA 1008.5 1010.7 1007.0 1002.2 996.8 994.7 991.3 992.6 999.1 1004.3 1007.0 1012.4 991.3 DAY 18 28 28 27 21 23 20 7 17 8 1 31 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1014.3 1013.8 1009.2 1005.6 999.7 996.4 993.7 996.2 1001.1 1007.4 1012.2 1016.1 1005.5 MAX. QFE PRESSURE IN HPA 1017.5 1017.3 1013.0 1009.8 1003.1 1001.1 997.6 1000.8 1005.7 1010.6 1016.1 1018.4 1018.4 DAY 11 12 19 11 6 1 7 18 30 23 14 24 MIN. QFE PRESSURE IN HPA 1007.6 1010.2 1006.4 1001.5 995.3 993.5 990.0 991.8 998.1 1003.9 1007.1 1012.2 990.0 DAY 18 28 5 27 21 23 20 7 6 8 1 31 MEAN QNH PRESSURE IN HPA 1014.7 1014.2 1009.6 1006.0 1000.1 996.8 994.1 996.6 1001.5 1007.8 1012.6 1016.5 1005.9 MAX. QNH PRESSURE IN HPA 1017.9 1017.7 1013.4 1010.2 1003.5 1001.5 998.0 1001.2 1006.1 1011.0 1016.5 1018.8 1018.8 DAY 11 12 19 11 6 1 7 18 30 23 14 24 MIN. QNH PRESSURE IN HPA 1008.0 1010.6 1006.8 1001.9 995.7 993.9 990.4 992.2 998.5 1004.3 1007.5 1012.6 990.4 DAY 18 28 5 27 21 23 20 7 6 8 1 31 MEAN QFF PRESSURE IN HPA 1015.0 1014.5 1009.8 1006.3 1000.4 997.0 994.3 996.9 1001.8 1008.0 1012.9 1016.8 1006.1 MAX. QFF PRESSURE IN HPA 1018.2 1018.0 1013.7 1010.5 1003.8 1001.8 998.3 1001.5 1006.4 1011.3 1016.8 1019.1 1019.1 DAY 11 12 19 11 6 1 7 18 30 23 14 24 MIN. QFF PRESSURE IN HPA 1008.3 1010.9 1007.1 1002.2 996.0 994.2 990.6 992.5 998.8 1004.6 1007.8 1012.9 990.6 DAY 18 28 5 27 21 23 20 7 6 8 1 31 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1015.2 1014.8 1010.0 1006.5 1000.6 997.3 994.9 997.5 1002.3 1008.4 1013.1 1016.9 1006.5 MAX. QFE PRESSURE IN HPA 1018.4 1018.5 1014.0 1010.4 1004.0 1002.6 999.6 1003.5 1006.5 1011.2 1016.6 1019.2 1019.2 DAY 11 12 19 11 27 1 8 17 30 22 14 24 MIN. QFE PRESSURE IN HPA 1008.0 1011.4 1007.2 1002.5 996.2 994.0 991.8 992.6 999.4 1005.2 1008.5 1013.1 991.8 DAY 18 28 5 27 21 22 19 6 10 3 1 16 MEAN QNH PRESSURE IN HPA 1015.6 1015.2 1010.4 1007.0 1001.0 997.7 995.3 997.9 1002.7 1008.8 1013.5 1017.4 1006.9 MAX. QNH PRESSURE IN HPA 1018.8 1018.9 1014.4 1010.8 1004.4 1003.0 1000.0 1003.9 1006.9 1011.6 1017.0 1019.6 1019.6 DAY 11 12 19 11 27 1 8 17 30 22 14 24 MIN. QNH PRESSURE IN HPA 1008.4 1011.8 1007.6 1002.9 996.6 994.4 992.2 993.0 999.8 1005.6 1008.9 1013.5 992.2 DAY 18 28 5 27 21 22 19 6 10 3 1 16 MEAN QFF PRESSURE IN HPA 1015.9 1015.5 1010.7 1007.2 1001.3 998.0 995.6 998.2 1003.0 1009.0 1013.8 1017.6 1007.1 MAX. QFF PRESSURE IN HPA 1019.1 1019.2 1014.7 1011.1 1004.7 1003.2 1000.3 1004.2 1007.2 1011.9 1017.3 1019.9 1019.9 DAY 11 12 19 11 27 1 8 17 30 22 14 24 MIN. QFF PRESSURE IN HPA 1008.7 1012.1 1007.9 1003.2 996.9 994.7 992.4 993.2 1000.1 1005.9 1009.2 1013.8 992.4 DAY 18 28 5 27 21 22 19 6 10 3 1 16 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1014.7 1014.2 1009.8 1006.2 1000.7 997.3 995.1 997.7 1002.3 1008.2 1012.8 1016.6 1006.3 MAX. QFE PRESSURE IN HPA 1018.0 1017.2 1014.0 1009.9 1004.0 1002.6 999.9 1002.6 1006.5 1011.1 1016.5 1018.7 1018.7 DAY 11 17 19 4 27 1 8 18 30 23 30 22 MIN. QFE PRESSURE IN HPA 1008.0 1011.1 1006.5 1002.5 996.8 994.0 992.2 992.6 999.7 1005.2 1008.2 1012.8 992.2 DAY 18 26 2 27 20 22 19 6 6 3 3 31 MEAN QNH PRESSURE IN HPA 1015.1 1014.6 1010.2 1006.7 1001.1 997.7 995.5 998.1 1002.7 1008.6 1013.2 1017.0 1006.7 MAX. QNH PRESSURE IN HPA 1018.4 1017.6 1014.4 1010.3 1004.4 1003.0 1000.3 1003.0 1006.9 1011.5 1016.9 1019.1 1019.1 DAY 11 17 19 4 27 1 8 18 30 23 30 22 MIN. QNH PRESSURE IN HPA 1008.4 1011.5 1006.9 1002.9 997.2 994.4 992.6 993.0 1000.1 1005.6 1008.6 1013.2 992.6 DAY 18 26 2 27 20 22 19 6 6 3 3 31 MEAN QFF PRESSURE IN HPA 1015.4 1014.9 1010.4 1006.9 1001.4 998.0 995.8 998.4 1002.9 1008.8 1013.5 1017.3 1007.0 MAX. QFF PRESSURE IN HPA 1018.7 1017.9 1014.7 1010.6 1004.7 1003.3 1000.6 1003.3 1007.2 1011.8 1017.2 1019.4 1019.4 DAY 11 17 19 4 27 1 8 18 30 23 30 22 MIN. QFF PRESSURE IN HPA 1008.7 1011.8 1007.2 1003.2 997.5 994.7 992.8 993.2 1000.4 1005.9 1008.9 1013.5 992.8 DAY 18 28 2 27 20 22 19 6 6 3 3 31 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 19.2 19.6 22.3 27.0 29.8 31.6 34.5 33.6 31.5 28.6 23.3 19.3 26.7 MINIMUN AIR TEMPERATURE (C) 14.6 14.3 17.7 21.9 25.4 27.5 30.2 29.5 28.5 23.1 18.2 14.1 22.1 DAYS WITH MINIMUM TEMP. >=21 0 0 7 17 31 30 31 31 30 26 5 0 208 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) 11.0 10.6 12.0 17.6 22.8 23.8 27.2 27.2 24.4 19.6 12.4 10.4 10.4 DAY 14 11 7 4 5 3 22 3 28 22 27 20 MAXIMUM AIR TEMPERATURE (C) 24.3 24.3 26.8 32.5 34.6 36.2 40.0 38.7 35.5 34.7 28.9 24.9 31.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 6 22 31 30 31 31 30 31 8 0 220 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 28.2 29.2 33.6 40.2 39.4 41.0 45.2 45.4 39.0 38.4 33.0 28.4 45.4 DAY 1 28 23 14 26 3 29 23 11 8 2 1 DIF. BETWEEN (MAX.-MIN.) (C) 9.7 10.0 9.1 10.6 9.2 8.7 9.8 9.2 7.0 11.6 10.7 10.8 9.7 MEAN DAILY TEMP. (MDT) (C) 19.5 19.3 22.2 27.2 30.0 31.8 35.1 34.1 32.0 28.9 23.5 19.5 26.9 COOLING DEG. DAYS(BASE 21 0C) 3.9 6.4 48.3 186.1 277.6 324.8 436.6 406.7 330.1 244.0 79.1 9.5 2353.4 HEATING DEG. DAYS(BASE 18 0C) 2.4 7.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7.6 17.0 DEWPOINT (MEAN C) 11.8 12.1 15.4 20.9 24.0 25.4 25.6 26.0 25.8 21.1 14.3 13.4 19.6 MIXING RATIO (G/KG) 8.97 9.26 11.16 15.87 19.20 21.15 21.65 22.14 21.46 16.33 10.56 9.84 15.63 VAPOUR PRESSURE (HPA) 14.41 14.84 17.80 25.00 29.96 32.78 33.44 34.25 33.42 25.77 16.90 15.80 24.53 SATURATION DEF. (HPA) 8.32 8.39 9.63 11.35 12.48 14.05 21.83 18.45 13.15 14.25 12.46 7.24 12.63 RELATIVE HUMIDITY (MEAN %) 65 65 67 72 73 72 64 68 73 67 60 71 68 RELATIVE HUMIDITY (MAX. %) 83 82 83 89 88 87 84 86 87 85 79 89 85 RELATIVE HUMIDITY (MIN. %) 47 47 52 50 52 51 39 45 57 47 39 51 48 RELATIVE HUMIDITY (MEAN% 03UTC) 76 79 79 85 83 83 81 83 85 80 70 87 81 RELATIVE HUMIDITY (MEAN% 09UTC) 51 49 54 55 57 57 44 48 59 51 41 53 52 RELATIVE HUMIDITY (MEAN% 15UTC) 63 62 63 74 72 71 58 66 72 70 62 67 67 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 60.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 42.0 49.3 151.8 DAYS WITH PRECIPITATION >=10 2 0 0 0 0 0 0 0 0 0 2 1 5 DAYS WITH PRECIPITATION >= 5 2 0 0 0 0 0 0 0 0 0 2 1 5 DAYS WITH PRECIPITATION >= 1 3 0 0 0 0 0 0 0 0 0 2 3 8 DAYS WITH PRECIPITATION 3 0 0 0 0 0 0 0 0 0 3 4 10 GREATEST DAILY PRECIPITATION 32.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 31.0 47.0 47.0 DAY 17 ** ** ** ** ** ** ** ** ** 6 15 DAY WITH THUNDER STORM 1 1 0 0 0 0 0 0 0 0 2 1 5 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 5 10 18 16 12 15 11 15 8 6 2 2 120 WIND DIRECTION (PREVAILING) 225 225 225 225 225 225 225 225 180 180 45 45 225 PREVAILING WIND SPEED(KNOTS) 10.8 12.1 12.9 10.9 10.0 11.4 9.9 11.0 10.2 9.0 11.9 7.0 11.0 PREVAILING WIND PERCENT 18.5 34.9 56.5 53.3 56.0 57.5 21.8 29.8 25.8 23.8 11.3 10.9 30.4 CALMS PERCENT OF WIND 33.9 37.1 19.0 29.2 21.0 19.6 29.0 27.8 35.8 53.2 59.6 62.9 35.7 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 190 215 208 208 205 207 149 167 157 180 90 187 196 VECTOR WIND MAGNITUDE(KNOTS) 0.5 4.0 7.4 6.9 6.6 7.6 2.3 3.0 2.4 2.4 1.0 0.7 3.4 WIND STEADINESES (MEAN %) 9.6 61.5 78.7 93.2 89.2 90.5 36.5 42.3 40.7 58.5 25.0 24.1 54.8 WIND SPEED (MEAN KNOTS) 5.2 6.5 9.4 7.4 7.4 8.4 6.3 7.1 5.9 4.1 4.0 2.9 6.2 FASTEST WIND DIRECTION 220 220 210 220 210 210 90 70 190 210 140 220 70 FASTEST WIND SPEED (KNOTS) 25 25 27 21 19 21 19 29 23 29 29 17 29 DAY 10 3 2 24 6 8 2 12 18 4 6 26 DAYS WITH SKY CLEAR (0-2)/8 25 27 28 26 30 30 31 30 30 31 21 25 334 DAYS WITH P.CLOUDY (3-6)/8 4 2 3 4 1 0 0 1 0 0 7 5 27 DAYS WITH CLOUDY (7-8)/8 2 0 0 0 0 0 0 0 0 0 2 1 5 DAYS WITH VISIBILITY =< 2 KM 2 1 1 10 3 16 1 3 3 4 0 3 47 DURATION OF SUNSHINE HOURS 246.1 253.9 261.2 294.3 350.2 300.4 292.9 259.8 262.9 297.9 239.6 248.1 3307.3 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1014.6 1013.6 1011.1 1005.8 1000.9 997.6 995.7 997.9 1002.9 1008.9 1014.0 1016.1 1006.6 MAX. QFE PRESSURE IN HPA 1021.3 1021.1 1017.3 1013.7 1007.6 1002.9 1001.2 1003.6 1010.1 1014.4 1021.8 1023.6 1023.6 DAY-HOUR 31- 6 11- 6 4- 6 1- 6 6- 6 17- 6 26- 6 14- 6 22- 6 30- 6 30- 6 17- 6 MIN. QFE PRESSURE IN HPA 1007.5 1007.7 1007.2 1002.1 995.9 993.3 989.8 993.0 994.3 1002.8 1007.5 1011.6 989.8 DAY-HOUR 10-15 2-12 14- 0 21-15 28-15 30-12 11-15 10-15 1- 0 1- 0 2- 0 11- 3 MEAN QNH PRESSURE IN HPA 1015.1 1014.1 1011.6 1006.2 1001.4 998.0 996.1 998.3 1003.3 1009.3 1014.4 1016.5 1007.0 MAX. QNH PRESSURE IN HPA 1021.7 1021.5 1017.7 1014.1 1008.0 1003.3 1001.6 1004.0 1010.5 1014.8 1022.2 1024.0 1024.0 DAY-HOUR 31- 6 11- 6 4- 6 1- 6 6- 6 17- 6 26- 6 14- 6 22- 6 30- 6 30- 6 17- 6 MIN. QNH PRESSURE IN HPA 1007.9 1008.1 1007.6 1002.5 996.3 993.7 990.2 993.4 994.7 1003.2 1007.9 1012.0 990.2 DAY-HOUR 10-15 2-12 14- 0 21-15 28-15 30-12 11-15 10-15 1- 0 1- 0 2- 0 11- 3 MEAN QFF PRESSURE IN HPA 1015.3 1014.3 1011.8 1006.4 1001.6 998.3 996.3 998.5 1003.5 1009.5 1014.7 1016.8 1007.3 MAX. QFF PRESSURE IN HPA 1022.0 1021.8 1018.0 1014.4 1008.3 1003.6 1001.9 1004.3 1010.8 1015.1 1022.5 1024.3 1024.3 DAY-HOUR 31- 6 11- 6 4- 6 1- 6 6- 6 17- 6 26- 6 14- 6 22- 6 30- 6 30- 6 17- 6 MIN. QFF PRESSURE IN HPA 1008.2 1008.4 1007.9 1002.8 996.6 994.0 990.4 993.7 994.9 1003.5 1008.2 1012.3 990.4 DAY-HOUR 10-15 2-12 14- 0 21-15 28-15 30-12 11-15 10-15 1- 0 1- 0 2- 0 11- 3 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1013.9 1013.1 1010.4 1005.2 1000.4 996.9 995.5 997.6 1002.1 1008.0 1013.2 1015.6 1006.0 MAX. QFE PRESSURE IN HPA 1017.9 1018.2 1013.8 1010.6 1005.4 1000.8 1000.2 1002.1 1007.1 1011.6 1017.5 1021.3 1021.3 DAY 26 11 8 1 6 17 26 14 23 30 30 18 MIN. QFE PRESSURE IN HPA 1008.0 1008.6 1007.2 1002.5 997.2 994.5 990.7 993.7 994.3 1002.8 1007.5 1012.7 990.7 DAY 11 8 14 28 29 8 11 11 1 1 2 12 MEAN QNH PRESSURE IN HPA 1014.3 1013.5 1010.8 1005.6 1000.8 997.3 995.9 998.0 1002.5 1008.4 1013.6 1016.0 1006.4 MAX. QNH PRESSURE IN HPA 1018.3 1018.6 1014.2 1011.0 1005.8 1001.2 1000.6 1002.5 1007.5 1012.0 1017.9 1021.7 1021.7 DAY 26 11 8 1 6 17 26 14 23 30 30 18 MIN. QNH PRESSURE IN HPA 1008.4 1009.0 1007.6 1002.9 997.6 994.9 991.1 994.1 994.7 1003.2 1007.9 1013.1 991.1 DAY 11 8 14 28 29 8 11 11 1 1 2 12 MEAN QFF PRESSURE IN HPA 1014.6 1013.8 1011.1 1005.8 1001.1 997.6 996.2 998.2 1002.8 1008.7 1013.9 1016.3 1006.7 MAX. QFF PRESSURE IN HPA 1018.6 1018.9 1014.5 1011.3 1006.1 1001.5 1000.9 1002.8 1007.8 1012.3 1018.2 1022.0 1022.0 DAY 26 11 8 1 6 17 26 14 23 30 30 18 MIN. QFF PRESSURE IN HPA 1008.7 1009.3 1007.9 1003.2 997.9 995.2 991.3 994.3 994.9 1003.5 1008.2 1013.4 991.3 DAY 11 8 14 28 29 8 11 11 1 1 2 12 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1014.7 1014.0 1011.5 1006.4 1001.7 998.7 996.4 998.7 1003.5 1009.4 1014.3 1016.3 1007.1 MAX. QFE PRESSURE IN HPA 1019.2 1019.6 1015.2 1012.0 1006.3 1001.8 1000.0 1003.0 1008.6 1012.6 1019.5 1021.8 1021.8 DAY 31 11 4 1 6 16 26 14 23 30 30 18 MIN. QFE PRESSURE IN HPA 1009.4 1009.8 1009.0 1003.7 998.6 995.7 991.5 994.5 995.6 1003.9 1009.2 1011.6 991.5 DAY 11 8 14 21 19 25 12 11 1 1 1 11 MEAN QNH PRESSURE IN HPA 1015.1 1014.4 1011.9 1006.8 1002.1 999.1 996.8 999.1 1003.9 1009.8 1014.8 1016.8 1007.5 MAX. QNH PRESSURE IN HPA 1019.6 1020.0 1015.6 1012.4 1006.7 1002.2 1000.4 1003.4 1009.0 1013.0 1019.9 1022.2 1022.2 DAY 31 11 4 1 6 16 26 14 23 30 30 18 MIN. QNH PRESSURE IN HPA 1009.8 1010.2 1009.4 1004.1 999.0 996.1 991.9 994.9 996.0 1004.3 1009.6 1012.0 991.9 DAY 11 8 14 21 19 25 12 11 1 1 1 11 MEAN QFF PRESSURE IN HPA 1015.4 1014.7 1012.2 1007.1 1002.4 999.3 997.1 999.4 1004.2 1010.0 1015.0 1017.0 1007.8 MAX. QFF PRESSURE IN HPA 1019.9 1020.3 1015.9 1012.7 1007.0 1002.5 1000.7 1003.7 1009.3 1013.3 1020.2 1022.5 1022.5 DAY 31 11 4 1 6 16 26 14 23 30 30 18 MIN. QFF PRESSURE IN HPA 1010.1 1010.5 1009.7 1004.4 999.3 996.4 992.1 995.2 996.3 1004.6 1009.9 1012.3 992.1 DAY 11 8 20 21 19 25 12 11 1 1 1 11 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1016.7 1015.7 1013.3 1007.8 1002.8 999.5 997.2 999.7 1004.8 1010.9 1016.0 1018.2 1008.5 MAX. QFE PRESSURE IN HPA 1021.3 1021.1 1017.3 1013.7 1007.6 1002.9 1001.2 1003.6 1010.1 1014.4 1021.8 1023.6 1023.6 DAY 31 11 4 1 6 17 26 14 22 30 30 17 MIN. QFE PRESSURE IN HPA 1011.8 1011.4 1010.4 1005.0 999.6 996.3 992.3 996.1 997.0 1004.9 1010.3 1013.8 992.3 DAY 10 2 20 21 19 6 11 11 1 1 6 11 MEAN QNH PRESSURE IN HPA 1017.1 1016.1 1013.7 1008.2 1003.2 999.9 997.6 1000.1 1005.2 1011.3 1016.4 1018.6 1009.0 MAX. QNH PRESSURE IN HPA 1021.7 1021.5 1017.7 1014.1 1008.0 1003.3 1001.6 1004.0 1010.5 1014.8 1022.2 1024.0 1024.0 DAY 31 11 4 1 6 17 26 14 22 30 30 17 MIN. QNH PRESSURE IN HPA 1012.2 1011.8 1010.8 1005.4 1000.0 996.7 992.7 996.5 997.4 1005.3 1010.7 1014.2 992.7 DAY 10 2 20 21 19 6 11 11 1 1 6 11 MEAN QFF PRESSURE IN HPA 1017.4 1016.4 1014.0 1008.4 1003.5 1000.1 997.9 1000.3 1005.5 1011.5 1016.6 1018.9 1009.2 MAX. QFF PRESSURE IN HPA 1022.0 1021.8 1018.0 1014.4 1008.3 1003.6 1001.9 1004.3 1010.8 1015.1 1022.5 1024.3 1024.3 DAY 31 11 4 1 6 17 26 14 22 30 30 17 MIN. QFF PRESSURE IN HPA 1012.5 1012.1 1011.1 1005.7 1000.3 997.0 992.9 996.7 997.7 1005.6 1011.0 1014.5 992.9 DAY 10 2 20 21 19 6 11 11 1 1 6 11 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1015.0 1014.4 1012.1 1006.6 1001.9 998.6 996.5 998.7 1003.5 1009.3 1014.1 1016.3 1007.3 MAX. QFE PRESSURE IN HPA 1020.2 1019.5 1016.4 1012.6 1006.7 1001.6 1000.2 1002.3 1008.8 1012.2 1019.7 1021.8 1021.8 DAY 31 11 4 1 6 16 30 13 22 30 30 17 MIN. QFE PRESSURE IN HPA 1010.1 1010.2 1009.4 1004.4 998.6 995.5 991.5 995.2 996.4 1004.2 1008.7 1013.4 991.5 DAY 10 2 20 23 19 6 11 10 1 1 6 9 MEAN QNH PRESSURE IN HPA 1015.4 1014.8 1012.5 1007.0 1002.3 999.0 996.9 999.1 1004.0 1009.8 1014.5 1016.8 1007.7 MAX. QNH PRESSURE IN HPA 1020.6 1019.9 1016.8 1013.0 1007.1 1002.0 1000.6 1002.7 1009.2 1012.6 1020.1 1022.2 1022.2 DAY 31 11 4 1 6 16 30 13 22 30 30 17 MIN. QNH PRESSURE IN HPA 1010.5 1010.6 1009.8 1004.8 999.0 995.9 991.9 995.6 996.8 1004.6 1009.1 1013.8 991.9 DAY 10 2 20 23 19 6 11 10 1 1 6 9 MEAN QFF PRESSURE IN HPA 1015.7 1015.1 1012.8 1007.3 1002.6 999.3 997.1 999.4 1004.2 1010.0 1014.8 1017.0 1007.9 MAX. QFF PRESSURE IN HPA 1020.9 1020.2 1017.1 1013.3 1007.4 1002.3 1000.9 1003.0 1009.5 1012.9 1020.4 1022.5 1022.5 DAY 31 11 4 1 6 16 30 13 22 30 30 17 MIN. QFF PRESSURE IN HPA 1010.8 1010.9 1010.1 1005.1 999.3 996.2 992.1 995.8 997.0 1004.9 1009.4 1014.1 992.1 DAY 10 2 20 27 19 6 11 10 1 1 6 11 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1013.5 1012.5 1010.1 1004.7 1000.0 996.9 994.8 996.9 1001.9 1007.9 1012.8 1014.9 1005.6 MAX. QFE PRESSURE IN HPA 1017.9 1017.9 1014.1 1011.1 1004.7 1000.2 998.8 1000.7 1006.9 1011.0 1017.9 1021.1 1021.1 DAY 25 11 4 1 4 16 26 13 22 30 30 17 MIN. QFE PRESSURE IN HPA 1007.7 1007.7 1007.6 1002.4 996.6 993.3 990.0 993.6 994.7 1003.2 1007.8 1011.9 990.0 DAY 10 2 13 22 28 30 11 10 1 1 1 9 MEAN QNH PRESSURE IN HPA 1013.9 1013.0 1010.5 1005.1 1000.4 997.3 995.2 997.3 1002.3 1008.3 1013.2 1015.3 1006.0 MAX. QNH PRESSURE IN HPA 1018.3 1018.3 1014.5 1011.5 1005.1 1000.6 999.2 1001.1 1007.3 1011.4 1018.3 1021.5 1021.5 DAY 25 11 4 1 4 16 26 13 22 30 30 17 MIN. QNH PRESSURE IN HPA 1008.1 1008.1 1008.0 1002.8 997.0 993.7 990.4 994.0 995.1 1003.6 1008.2 1012.3 990.4 DAY 10 2 13 22 28 30 11 10 1 1 1 9 MEAN QFF PRESSURE IN HPA 1014.2 1013.2 1010.8 1005.3 1000.7 997.5 995.4 997.5 1002.5 1008.5 1013.5 1015.6 1006.2 MAX. QFF PRESSURE IN HPA 1018.6 1018.6 1014.8 1011.8 1005.4 1000.9 999.5 1001.4 1007.6 1011.7 1018.6 1021.8 1021.8 DAY 25 11 4 1 4 16 26 13 22 30 30 17 MIN. QFF PRESSURE IN HPA 1008.4 1008.4 1008.3 1003.1 997.3 994.0 990.6 994.2 995.4 1003.9 1008.5 1012.6 990.6 DAY 10 2 13 22 28 30 11 10 1 1 1 11 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1014.0 1012.6 1010.1 1004.5 999.6 996.2 994.3 996.4 1001.7 1008.0 1013.4 1015.6 1005.5 MAX. QFE PRESSURE IN HPA 1018.6 1018.1 1013.4 1011.1 1004.6 999.7 998.4 1000.2 1006.7 1010.9 1018.6 1021.6 1021.6 DAY 25 10 4 1 5 16 23 5 22 16 30 17 MIN. QFE PRESSURE IN HPA 1007.5 1008.3 1007.3 1002.1 995.9 993.3 989.8 993.0 994.7 1003.2 1008.2 1012.9 989.8 DAY 10 2 13 21 28 30 11 10 1 1 1 6 MEAN QNH PRESSURE IN HPA 1014.4 1013.0 1010.5 1004.9 1000.0 996.6 994.7 996.8 1002.1 1008.4 1013.9 1016.0 1005.9 MAX. QNH PRESSURE IN HPA 1019.0 1018.5 1013.8 1011.5 1005.0 1000.1 998.8 1000.6 1007.1 1011.3 1019.0 1022.0 1022.0 DAY 25 10 4 1 5 16 23 5 22 16 30 17 MIN. QNH PRESSURE IN HPA 1007.9 1008.7 1007.7 1002.5 996.3 993.7 990.2 993.4 995.1 1003.6 1008.6 1013.3 990.2 DAY 10 2 13 21 28 30 11 10 1 1 1 6 MEAN QFF PRESSURE IN HPA 1014.7 1013.3 1010.8 1005.2 1000.3 996.8 995.0 997.0 1002.3 1008.7 1014.1 1016.3 1006.2 MAX. QFF PRESSURE IN HPA 1019.3 1018.8 1014.1 1011.8 1005.3 1000.4 999.1 1000.9 1007.4 1011.6 1019.3 1022.3 1022.3 DAY 25 10 4 1 5 16 23 5 22 16 30 17 MIN. QFF PRESSURE IN HPA 1008.2 1009.0 1008.0 1002.8 996.6 994.0 990.4 993.7 995.4 1003.9 1008.9 1013.6 990.4 DAY 10 2 13 21 28 30 11 10 1 1 1 11 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1014.9 1013.5 1011.0 1005.6 1000.6 997.1 995.4 997.5 1002.7 1008.9 1014.3 1016.2 1006.5 MAX. QFE PRESSURE IN HPA 1019.1 1019.0 1014.4 1011.4 1005.6 1001.0 999.0 1002.5 1008.1 1011.8 1019.1 1022.1 1022.1 DAY 26 10 7 1 5 16 25 13 22 25 30 17 MIN. QFE PRESSURE IN HPA 1008.0 1009.1 1008.4 1003.3 997.2 994.5 990.5 993.7 995.4 1004.5 1008.7 1012.7 990.5 DAY 10 7 13 20 28 6 11 10 1 1 1 14 MEAN QNH PRESSURE IN HPA 1015.3 1014.0 1011.4 1006.0 1001.0 997.5 995.8 997.9 1003.1 1009.3 1014.7 1016.6 1006.9 MAX. QNH PRESSURE IN HPA 1019.5 1019.4 1014.8 1011.8 1006.0 1001.4 999.4 1002.9 1008.5 1012.2 1019.5 1022.5 1022.5 DAY 26 10 7 1 5 16 25 13 22 25 30 17 MIN. QNH PRESSURE IN HPA 1008.4 1009.5 1008.8 1003.7 997.6 994.9 990.9 994.1 995.8 1004.9 1009.1 1013.1 990.9 DAY 10 7 13 20 28 6 11 10 1 1 1 14 MEAN QFF PRESSURE IN HPA 1015.6 1014.2 1011.7 1006.3 1001.3 997.8 996.0 998.1 1003.4 1009.6 1015.0 1016.9 1007.2 MAX. QFF PRESSURE IN HPA 1019.8 1019.7 1015.1 1012.1 1006.3 1001.7 999.6 1003.2 1008.8 1012.5 1019.8 1022.8 1022.8 DAY 26 10 7 1 5 16 25 13 22 25 30 17 MIN. QFF PRESSURE IN HPA 1008.7 1009.8 1009.1 1004.0 997.9 995.2 991.1 994.3 996.1 1005.2 1009.4 1013.4 991.1 DAY 10 7 13 21 28 6 11 10 1 1 1 14 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1014.5 1013.4 1010.8 1005.5 1000.6 997.2 995.6 997.7 1002.7 1008.6 1013.8 1015.8 1006.3 MAX. QFE PRESSURE IN HPA 1018.4 1018.7 1014.2 1010.7 1005.6 1001.0 999.4 1002.5 1007.7 1011.5 1018.5 1021.3 1021.3 DAY 25 10 7 1 5 16 25 13 22 25 30 17 MIN. QFE PRESSURE IN HPA 1007.8 1009.1 1008.0 1002.9 997.5 994.8 991.2 994.2 995.4 1004.8 1008.0 1013.1 991.2 DAY 10 7 13 25 18 24 10 10 1 1 1 11 MEAN QNH PRESSURE IN HPA 1014.9 1013.8 1011.2 1005.9 1001.0 997.6 996.1 998.1 1003.1 1009.0 1014.3 1016.2 1006.8 MAX. QNH PRESSURE IN HPA 1018.8 1019.1 1014.6 1011.1 1006.0 1001.4 999.8 1002.9 1008.1 1011.9 1018.9 1021.7 1021.7 DAY 25 10 7 1 5 16 25 13 22 25 30 17 MIN. QNH PRESSURE IN HPA 1008.2 1009.5 1008.4 1003.3 997.9 995.2 991.6 994.6 995.8 1005.2 1008.4 1013.5 991.6 DAY 10 7 13 25 18 24 10 10 1 1 1 11 MEAN QFF PRESSURE IN HPA 1015.1 1014.1 1011.5 1006.1 1001.3 997.9 996.3 998.4 1003.4 1009.3 1014.5 1016.5 1007.0 MAX. QFF PRESSURE IN HPA 1019.1 1019.4 1014.9 1011.4 1006.3 1001.7 1000.0 1003.2 1008.4 1012.2 1019.2 1022.0 1022.0 DAY 25 10 7 1 5 16 25 13 22 25 30 17 MIN. QFF PRESSURE IN HPA 1008.5 1009.8 1008.7 1003.6 998.2 995.5 991.8 994.8 996.1 1005.5 1008.7 1013.8 991.8 DAY 10 7 13 25 18 24 10 10 1 1 1 11 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JAZIREH GHESHM (40880) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 26 55 N LONGITUDE 55 55 E DATA PROCESSING CENTER ELEVATION 6.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 17.1 19.3 22.8 25.5 30.1 31.7 33.9 33.4 32.0 28.9 24.1 22.5 26.8 MINIMUN AIR TEMPERATURE (C) 11.9 13.8 17.9 20.8 25.7 27.7 30.8 29.7 28.5 23.8 18.3 17.6 22.2 DAYS WITH MINIMUM TEMP. >=21 0 0 5 17 31 30 31 31 30 29 2 1 207 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) 6.4 8.0 12.2 16.0 23.0 25.0 28.0 27.8 25.2 20.2 15.0 13.2 6.4 DAY 31 2 1 1 2 13 1 20 24 24 22 31 MAXIMUM AIR TEMPERATURE (C) 22.4 24.7 27.7 30.2 35.4 36.7 38.7 38.7 36.8 34.1 30.1 28.2 32.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 5 14 31 30 31 31 30 31 15 2 220 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 25.0 28.5 32.0 37.0 40.5 41.4 43.0 44.0 42.0 36.8 35.5 32.4 44.0 DAY 8 10 10 8 3 24 29 14 23 6 5 8 DIF. BETWEEN (MAX.-MIN.) (C) 10.5 10.9 9.8 9.4 9.7 9.0 7.9 9.0 8.3 10.3 11.8 10.6 9.8 MEAN DAILY TEMP. (MDT) (C) 17.2 19.3 22.8 25.5 30.5 32.2 34.8 34.2 32.6 29.0 24.2 22.9 27.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 5.1 55.4 134.1 294.9 336.1 427.0 410.1 348.8 247.1 96.0 59.6 2414.4 HEATING DEG. DAYS(BASE 18 0C) 29.8 9.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 39.2 DEWPOINT (MEAN C) 10.8 12.0 16.4 20.0 23.2 25.8 26.8 25.9 25.7 22.4 16.3 17.5 20.2 MIXING RATIO (G/KG) 8.28 9.05 12.05 15.06 18.51 21.59 23.11 21.86 21.47 17.64 11.99 12.64 16.10 VAPOUR PRESSURE (HPA) 13.33 14.52 19.19 23.79 28.89 33.40 35.62 33.89 33.45 27.78 19.14 20.24 25.27 SATURATION DEF. (HPA) 6.61 8.31 8.92 9.45 14.30 13.90 17.79 18.24 14.46 12.74 11.66 7.54 11.99 RELATIVE HUMIDITY (MEAN %) 69 66 71 74 69 73 69 68 72 71 64 75 70 RELATIVE HUMIDITY (MAX. %) 87 85 89 89 86 88 85 86 87 87 82 91 87 RELATIVE HUMIDITY (MIN. %) 50 44 51 55 49 53 48 45 52 52 46 53 50 RELATIVE HUMIDITY (MEAN% 03UTC) 84 79 85 86 79 83 80 83 84 86 78 89 83 RELATIVE HUMIDITY (MEAN% 09UTC) 52 46 53 60 52 56 54 49 55 54 48 55 53 RELATIVE HUMIDITY (MEAN% 15UTC) 65 65 68 72 70 72 65 65 71 71 64 74 69 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 40.1 0.0 2.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 43.1 DAYS WITH PRECIPITATION >=10 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 1 2 0 1 0 0 0 0 0 1 0 0 0 4 DAYS WITH PRECIPITATION 3 0 2 0 0 0 0 0 1 0 0 0 6 GREATEST DAILY PRECIPITATION 38.0 0.0 2.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 38.0 DAY 9 ** 25 ** **