STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 16.2 17.0 19.0 25.3 33.1 36.4 37.1 36.9 32.8 28.1 22.0 14.9 26.6 MINIMUN AIR TEMPERATURE (C) 7.2 10.0 11.4 14.8 20.2 22.6 26.4 25.9 20.6 15.9 11.2 10.5 16.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 1 11 26 31 31 16 1 0 0 117 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) 3.4 5.2 6.2 9.0 14.4 20.5 23.6 23.0 15.4 12.0 1.4 6.2 1.4 DAY 3 12 1 8 11 2 1 31 28 17 28 30 MAXIMUM AIR TEMPERATURE (C) 22.7 21.8 24.2 31.4 39.1 42.8 43.1 43.5 39.9 35.5 29.2 18.4 32.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 23 31 30 31 31 30 31 17 0 224 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 25.0 26.4 29.6 34.8 42.0 46.2 47.6 47.4 44.6 38.0 34.6 22.0 47.6 DAY 19 3 26 20 21 13 8 8 1 14 4 3 DIF. BETWEEN (MAX.-MIN.) (C) 15.5 11.8 12.8 16.6 18.9 20.2 16.7 17.6 19.3 19.6 18.0 7.9 16.2 MEAN DAILY TEMP. (MDT) (C) 15.0 15.9 17.8 23.1 29.6 32.7 34.8 34.7 30.2 25.7 20.2 14.4 24.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 1.3 68.3 267.8 350.4 427.0 424.9 277.1 145.6 28.1 0.0 1990.7 HEATING DEG. DAYS(BASE 18 0C) 93.4 63.1 25.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17.6 111.1 310.4 DEWPOINT (MEAN C) 5.4 8.2 10.3 9.8 9.1 7.4 17.2 16.9 15.5 9.0 7.3 10.8 10.6 MIXING RATIO (G/KG) 5.92 7.28 8.45 8.11 8.04 7.26 13.77 13.20 12.84 7.78 7.01 8.53 9.02 VAPOUR PRESSURE (HPA) 9.17 11.21 12.96 12.42 12.26 11.01 20.56 19.82 19.35 11.92 10.79 13.15 13.72 SATURATION DEF. (HPA) 10.19 8.88 9.81 21.39 40.65 52.99 45.26 45.33 33.33 28.44 17.62 4.07 26.50 RELATIVE HUMIDITY (MEAN %) 52 60 62 41 26 20 35 34 41 34 42 79 44 RELATIVE HUMIDITY (MAX. %) 76 83 85 69 44 35 52 57 64 58 60 93 65 RELATIVE HUMIDITY (MIN. %) 32 43 45 26 18 12 24 20 26 18 28 63 30 RELATIVE HUMIDITY (MEAN% 03UTC) 75 83 84 67 44 35 52 57 64 58 60 91 64 RELATIVE HUMIDITY (MEAN% 09UTC) 42 51 50 32 19 14 27 22 27 21 31 73 34 RELATIVE HUMIDITY (MEAN% 15UTC) 48 54 59 35 23 16 31 31 38 33 44 79 41 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 4.5 66.0 79.5 15.6 0.0 0.0 5.6 0.0 0.0 0.0 0.0 148.8 320.0 DAYS WITH PRECIPITATION >=10 0 2 4 1 0 0 0 0 0 0 0 6 13 DAYS WITH PRECIPITATION >= 5 0 3 5 1 0 0 0 0 0 0 0 7 16 DAYS WITH PRECIPITATION >= 1 1 5 7 2 0 0 2 0 0 0 0 10 27 DAYS WITH PRECIPITATION 2 8 10 4 0 0 4 0 0 0 0 14 42 GREATEST DAILY PRECIPITATION 4.0 32.0 20.0 13.0 0.0 0.0 4.0 0.0 0.0 0.0 0.0 32.0 32.0 DAY 26 9 21 24 ** ** 24 ** ** ** ** 12 DAY WITH THUNDER STORM 0 1 3 1 0 0 3 0 0 0 0 6 14 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 2 6 0 5 9 2 2 2 0 3 5 0 36 WIND DIRECTION (PREVAILING) 315 315 315 315 315 270 315 315 315 315 315 315 315 PREVAILING WIND SPEED(KNOTS) 8.3 7.9 8.8 9.5 11.0 10.1 9.5 10.1 7.6 7.2 9.2 6.9 9.3 PREVAILING WIND PERCENT 9.0 13.6 16.8 20.7 28.4 19.3 29.7 12.3 7.3 13.5 18.0 4.5 15.8 CALMS PERCENT OF WIND 76.8 64.3 65.2 49.3 43.2 54.0 51.6 59.4 68.7 65.2 70.7 87.7 63.0 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 301 302 292 288 285 277 297 246 253 253 296 328 284 VECTOR WIND MAGNITUDE(KNOTS) 1.3 1.3 1.4 3.0 4.3 3.5 3.4 1.4 1.0 1.1 1.7 0.1 1.9 WIND STEADINESES (MEAN %) 76.5 52.0 50.0 71.4 74.1 77.8 77.3 42.4 43.5 42.3 68.0 12.5 61.3 WIND SPEED (MEAN KNOTS) 1.7 2.5 2.8 4.2 5.8 4.5 4.4 3.3 2.3 2.6 2.5 0.8 3.1 FASTEST WIND DIRECTION 340 320 320 310 310 270 290 310 240 240 310 120 310 FASTEST WIND SPEED (KNOTS) 14 16 17 19 17 23 19 16 12 16 25 16 25 DAY 1 1 7 21 11 4 10 2 1 10 5 25 DAYS WITH SKY CLEAR (0-2)/8 24 15 16 14 28 29 26 30 30 31 28 10 281 DAYS WITH P.CLOUDY (3-6)/8 7 6 8 14 3 1 4 1 0 0 1 6 51 DAYS WITH CLOUDY (7-8)/8 0 7 7 2 0 0 1 0 0 0 1 15 33 DAYS WITH VISIBILITY =< 2 KM 0 0 6 0 0 0 0 0 1 0 1 12 20 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 972.6 969.4 968.2 965.6 962.2 956.0 951.4 954.6 960.8 966.4 969.7 972.9 964.1 MAX. QFE PRESSURE IN HPA 977.7 974.8 974.4 972.0 967.5 963.2 956.4 960.6 967.5 973.1 976.8 977.9 977.9 DAY-HOUR 16- 6 1- 6 3- 6 4- 6 26- 6 1- 6 28- 6 19- 6 13- 6 30- 6 30- 6 19- 6 MIN. QFE PRESSURE IN HPA 967.6 964.4 962.2 960.2 956.2 950.9 945.8 947.2 953.1 961.1 962.2 966.7 945.8 DAY-HOUR 13-15 27-12 26-12 15-15 15-15 18-15 20-12 8-12 1-12 15-12 5-12 25- 3 MEAN QNH PRESSURE IN HPA 1021.0 1017.7 1016.4 1013.7 1010.3 1003.8 998.9 1002.3 1008.8 1014.5 1018.0 1021.3 1012.2 MAX. QNH PRESSURE IN HPA 1026.3 1023.3 1022.9 1020.4 1015.7 1011.2 1004.2 1008.5 1015.7 1021.5 1025.4 1026.5 1026.5 DAY-HOUR 16- 6 1- 6 3- 6 4- 6 26- 6 1- 6 28- 6 19- 6 13- 6 30- 6 30- 6 19- 6 MIN. QNH PRESSURE IN HPA 1015.8 1012.5 1010.2 1008.1 1004.0 998.5 993.1 994.6 1000.7 1009.1 1010.2 1014.9 993.1 DAY-HOUR 13-15 27-12 26-12 15-15 15-15 18-15 20-12 8-12 1-12 15-12 5-12 25- 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 973.0 969.6 968.3 965.9 962.7 956.6 952.1 955.4 961.3 967.1 970.3 972.8 964.6 MAX. QFE PRESSURE IN HPA 976.0 973.6 972.9 970.8 966.6 962.2 955.8 959.2 965.7 971.8 975.2 975.9 976.0 DAY 19 1 4 4 27 2 4 12 13 30 30 19 MIN. QFE PRESSURE IN HPA 969.9 965.7 962.6 961.2 958.9 953.3 948.1 950.7 955.4 963.3 964.4 966.7 948.1 DAY 14 23 14 17 16 13 17 9 1 15 6 25 MEAN QNH PRESSURE IN HPA 1021.4 1017.9 1016.5 1014.1 1010.7 1004.4 999.7 1003.1 1009.3 1015.3 1018.7 1021.2 1012.7 MAX. QNH PRESSURE IN HPA 1024.6 1022.1 1021.3 1019.2 1014.8 1010.2 1003.5 1007.1 1013.8 1020.2 1023.7 1024.5 1024.6 DAY 19 1 4 4 27 2 4 12 13 30 30 19 MIN. QNH PRESSURE IN HPA 1018.2 1013.8 1010.6 1009.2 1006.8 1000.9 995.5 998.2 1003.1 1011.4 1012.5 1014.9 995.5 DAY 14 23 14 17 16 13 17 9 1 15 6 25 MEAN QFF PRESSURE IN HPA 1021.5 1017.5 1015.9 1012.5 1008.1 1001.3 996.1 999.6 1006.6 1013.5 1017.9 1021.1 1011.0 MAX. QFF PRESSURE IN HPA 1024.2 1022.0 1021.0 1018.0 1012.0 1007.3 1000.3 1003.6 1010.6 1018.7 1023.6 1024.7 1024.7 DAY 16 1 4 4 27 2 4 12 13 30 30 19 MIN. QFF PRESSURE IN HPA 1018.3 1013.1 1010.2 1007.7 1004.4 997.3 991.5 994.6 1000.0 1009.4 1011.2 1014.5 991.5 DAY 14 23 14 17 16 13 20 9 1 15 6 25 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 974.6 971.2 969.8 967.2 963.8 957.5 952.6 956.4 962.6 968.4 971.7 974.4 965.8 MAX. QFE PRESSURE IN HPA 977.7 974.8 974.4 972.0 967.5 963.2 956.4 960.6 967.5 973.1 976.8 977.9 977.9 DAY 16 1 3 4 26 1 28 19 13 30 30 19 MIN. QFE PRESSURE IN HPA 971.5 967.7 964.4 963.0 959.4 954.0 948.4 951.5 956.6 964.5 965.8 969.2 948.4 DAY 9 27 14 16 15 18 20 3 1 15 6 12 MEAN QNH PRESSURE IN HPA 1023.1 1019.5 1018.1 1015.4 1011.8 1005.3 1000.2 1004.1 1010.6 1016.6 1020.1 1022.9 1014.0 MAX. QNH PRESSURE IN HPA 1026.3 1023.3 1022.9 1020.4 1015.7 1011.2 1004.2 1008.5 1015.7 1021.5 1025.4 1026.5 1026.5 DAY 16 1 3 4 26 1 28 19 13 30 30 19 MIN. QNH PRESSURE IN HPA 1019.9 1015.9 1012.5 1011.0 1007.3 1001.7 995.8 999.1 1004.4 1012.6 1014.0 1017.5 995.8 DAY 9 27 14 16 15 18 20 3 1 15 6 12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 972.9 969.9 968.9 966.2 962.6 956.5 951.8 955.1 961.3 966.5 969.8 973.2 964.6 MAX. QFE PRESSURE IN HPA 976.2 973.4 973.8 970.6 967.1 962.2 955.5 959.7 965.9 971.5 975.9 976.6 976.6 DAY 18 1 3 4 26 2 24 19 13 24 30 19 MIN. QFE PRESSURE IN HPA 969.4 967.0 963.6 962.2 958.3 952.9 947.3 949.8 955.3 962.4 963.9 968.8 947.3 DAY 9 23 14 16 15 18 20 8 1 15 6 25 MEAN QNH PRESSURE IN HPA 1021.4 1018.2 1017.2 1014.4 1010.7 1004.3 999.4 1002.8 1009.3 1014.7 1018.1 1021.7 1012.7 MAX. QNH PRESSURE IN HPA 1024.8 1021.9 1022.3 1018.9 1015.3 1010.2 1003.2 1007.6 1014.1 1019.9 1024.5 1025.2 1025.2 DAY 18 1 3 4 26 2 24 19 13 24 30 19 MIN. QNH PRESSURE IN HPA 1017.7 1015.2 1011.7 1010.2 1006.1 1000.5 994.7 997.3 1003.0 1010.4 1012.0 1017.1 994.7 DAY 9 23 14 16 15 18 20 8 1 15 6 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 970.9 967.9 966.8 964.4 961.1 954.9 950.1 953.1 959.3 964.7 967.9 971.7 962.7 MAX. QFE PRESSURE IN HPA 973.9 971.3 971.4 968.9 964.8 961.5 953.6 957.3 963.7 969.4 974.5 974.5 974.5 DAY 18 1 3 12 10 1 4 19 12 24 30 19 MIN. QFE PRESSURE IN HPA 967.7 964.4 962.2 960.4 957.3 951.4 945.8 947.2 953.1 961.1 962.2 967.7 945.8 DAY 9 27 26 16 15 18 20 8 1 15 5 4 MEAN QNH PRESSURE IN HPA 1019.3 1016.2 1015.0 1012.5 1009.1 1002.6 997.7 1000.7 1007.2 1012.8 1016.1 1020.1 1010.8 MAX. QNH PRESSURE IN HPA 1022.4 1019.7 1019.8 1017.2 1012.9 1009.5 1001.3 1005.1 1011.8 1017.7 1023.0 1023.0 1023.0 DAY 18 1 3 12 10 1 4 19 12 24 30 19 MIN. QNH PRESSURE IN HPA 1015.9 1012.5 1010.2 1008.3 1005.1 999.0 993.1 994.6 1000.7 1009.1 1010.2 1015.9 993.1 DAY 9 27 26 16 15 18 20 8 1 15 5 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 971.5 968.3 967.1 964.4 961.1 954.7 950.2 953.2 959.6 965.3 968.8 972.4 963.0 MAX. QFE PRESSURE IN HPA 974.5 971.5 971.4 969.3 965.7 960.6 953.7 957.4 963.4 969.8 974.7 975.6 975.6 DAY 18 1 3 12 10 2 28 18 13 24 30 19 MIN. QFE PRESSURE IN HPA 967.6 964.4 962.7 960.2 956.2 950.9 946.1 947.6 953.1 961.5 963.0 968.6 946.1 DAY 13 27 26 15 15 18 20 3 1 14 6 4 MEAN QNH PRESSURE IN HPA 1019.9 1016.6 1015.3 1012.5 1009.1 1002.4 997.7 1000.8 1007.5 1013.5 1017.1 1020.8 1011.1 MAX. QNH PRESSURE IN HPA 1023.0 1019.9 1019.8 1017.6 1013.8 1008.5 1001.4 1005.2 1011.5 1018.1 1023.2 1024.1 1024.1 DAY 18 1 3 12 10 2 28 18 13 24 30 19 MIN. QNH PRESSURE IN HPA 1015.8 1012.5 1010.7 1008.1 1004.0 998.5 993.5 995.0 1000.7 1009.5 1011.0 1016.9 993.5 DAY 13 27 26 15 15 18 20 3 1 14 6 4 MEAN QFF PRESSURE IN HPA 1019.9 1016.2 1014.6 1010.9 1006.4 999.3 994.0 997.3 1004.7 1011.6 1016.2 1020.6 1009.3 MAX. QFF PRESSURE IN HPA 1022.5 1019.7 1019.4 1016.0 1011.3 1005.6 997.8 1001.7 1008.7 1016.8 1023.2 1024.1 1024.1 DAY 18 1 3 12 10 2 28 18 28 24 30 19 MIN. QFF PRESSURE IN HPA 1016.0 1011.9 1009.3 1005.8 1001.5 995.3 989.5 991.3 997.6 1007.4 1009.7 1016.2 989.5 DAY 13 27 26 15 15 18 20 3 1 14 6 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 14.1 16.8 19.1 26.8 33.1 36.4 38.3 36.6 33.9 27.7 20.9 16.7 26.7 MINIMUN AIR TEMPERATURE (C) 8.8 9.7 12.8 15.6 19.1 22.8 25.2 25.5 21.3 15.9 9.8 5.5 16.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 3 7 23 30 31 14 1 0 0 109 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) 4.6 5.4 8.0 9.2 14.6 18.4 20.4 21.2 18.2 10.6 6.2 2.6 2.6 DAY 15 26 15 7 1 8 3 25 16 26 13 10 MAXIMUM AIR TEMPERATURE (C) 18.3 21.8 23.7 33.0 39.7 43.1 44.6 43.2 41.3 35.0 28.3 24.4 33.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 24 31 30 31 31 30 31 9 0 217 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 22.8 26.0 28.6 38.6 44.2 45.8 47.0 47.4 45.9 40.8 33.2 26.2 47.4 DAY 31 11 31 23 31 6 11 1 11 1 4 14 DIF. BETWEEN (MAX.-MIN.) (C) 9.5 12.1 10.9 17.4 20.6 20.3 19.4 17.7 20.0 19.1 18.5 18.9 17.0 MEAN DAILY TEMP. (MDT) (C) 13.5 15.8 18.2 24.3 29.4 33.0 34.9 34.4 31.3 25.4 19.0 15.0 24.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.5 101.9 261.1 359.5 431.4 414.5 309.3 137.1 6.5 0.0 2022.0 HEATING DEG. DAYS(BASE 18 0C) 138.3 66.3 20.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10.0 93.8 328.8 DEWPOINT (MEAN C) 9.3 10.5 12.7 9.0 8.4 11.8 16.1 19.1 16.0 13.1 5.9 4.8 11.4 MIXING RATIO (G/KG) 7.75 8.47 9.93 8.01 7.38 9.67 13.07 15.01 12.75 10.73 6.50 5.85 9.59 VAPOUR PRESSURE (HPA) 11.95 13.01 15.17 12.26 11.27 14.60 19.56 22.50 19.22 16.32 10.01 9.05 14.58 SATURATION DEF. (HPA) 4.60 6.72 7.56 24.90 42.38 49.30 50.80 41.56 36.93 23.10 16.43 11.26 26.30 RELATIVE HUMIDITY (MEAN %) 75 70 70 39 25 26 30 39 39 44 42 51 46 RELATIVE HUMIDITY (MAX. %) 93 91 91 68 52 49 47 64 62 68 67 78 69 RELATIVE HUMIDITY (MIN. %) 57 50 52 23 14 16 21 26 24 28 24 28 30 RELATIVE HUMIDITY (MEAN% 03UTC) 92 91 91 68 52 49 47 64 62 68 66 76 69 RELATIVE HUMIDITY (MEAN% 09UTC) 66 58 59 26 15 17 23 27 25 30 30 38 35 RELATIVE HUMIDITY (MEAN% 15UTC) 74 68 71 36 20 22 28 37 37 47 43 49 44 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 170.9 52.6 128.2 3.0 0.0 1.0 0.0 27.1 0.0 0.0 3.2 6.3 392.3 DAYS WITH PRECIPITATION >=10 6 2 5 0 0 0 0 2 0 0 0 0 15 DAYS WITH PRECIPITATION >= 5 9 4 6 0 0 0 0 3 0 0 0 1 23 DAYS WITH PRECIPITATION >= 1 10 7 9 1 0 1 0 3 0 0 1 1 33 DAYS WITH PRECIPITATION 11 9 12 1 0 4 1 5 1 0 2 3 49 GREATEST DAILY PRECIPITATION 47.4 19.0 40.0 3.0 0.0 1.0 0.0 10.0 0.0 0.0 3.2 6.0 47.4 DAY 12 21 13 16 ** 15 ** 21 ** ** 28 24 DAY WITH THUNDER STORM 4 1 6 1 0 3 1 3 1 1 0 2 23 DAYS WITH SNOW OR SLEET 0 0 1 0 0 0 0 0 0 0 0 0 1 DAYS WITH DUST 0 0 0 3 0 1 2 2 4 0 0 0 12 WIND DIRECTION (PREVAILING) 315 315 315 315 315 315 270 225 315 315 315 315 315 PREVAILING WIND SPEED(KNOTS) 6.9 8.3 8.9 9.5 7.4 9.0 7.5 10.4 8.9 6.4 6.7 6.1 8.3 PREVAILING WIND PERCENT 7.1 5.5 20.0 40.7 17.4 20.7 12.9 11.0 20.0 16.8 21.3 11.6 16.7 CALMS PERCENT OF WIND 84.5 81.4 70.3 48.7 53.5 47.3 40.0 40.6 52.0 63.9 57.3 71.6 59.2 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 228 253 303 306 268 278 269 240 280 279 291 289 284 VECTOR WIND MAGNITUDE(KNOTS) 0.1 0.2 1.6 4.3 3.2 2.8 1.4 0.9 2.5 1.3 1.6 1.3 1.7 WIND STEADINESES (MEAN %) 8.3 14.3 61.5 91.5 76.2 62.2 23.3 16.7 64.1 52.0 57.1 76.5 50.0 WIND SPEED (MEAN KNOTS) 1.2 1.4 2.6 4.7 4.2 4.5 6.0 5.4 3.9 2.5 2.8 1.7 3.4 FASTEST WIND DIRECTION 120 210 310 310 270 220 330 100 300 270 300 280 100 FASTEST WIND SPEED (KNOTS) 16 16 19 23 17 23 29 39 19 16 21 39 39 DAY 11 16 27 28 13 26 27 20 18 17 28 23 DAYS WITH SKY CLEAR (0-2)/8 16 13 11 18 20 27 27 26 30 31 21 24 264 DAYS WITH P.CLOUDY (3-6)/8 9 12 10 9 8 3 4 5 0 0 6 6 72 DAYS WITH CLOUDY (7-8)/8 6 4 10 3 3 0 0 0 0 0 3 1 30 DAYS WITH VISIBILITY =< 2 KM 8 1 5 0 0 0 0 2 3 0 2 1 22 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 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 971.5 969.0 966.6 964.9 961.6 955.9 953.6 955.7 959.1 966.5 970.5 972.9 964.0 MAX. QFE PRESSURE IN HPA 978.2 973.7 971.3 971.6 966.6 962.5 960.9 962.0 968.1 971.7 978.4 978.3 978.4 DAY-HOUR 27- 6 19- 6 28- 6 8- 6 4- 6 1- 6 3- 6 27- 6 25- 6 24- 6 16- 6 8- 6 MIN. QFE PRESSURE IN HPA 961.3 963.9 961.4 960.8 954.3 950.2 949.1 949.3 954.8 959.0 965.2 968.0 949.1 DAY-HOUR 12- 3 5- 3 19-15 11-12 29-15 19-15 12-15 14-12 18-12 4-12 2-12 15-12 MEAN QNH PRESSURE IN HPA 1019.9 1017.3 1014.7 1013.0 1009.6 1003.7 1001.3 1003.5 1007.0 1014.7 1018.8 1021.4 1012.1 MAX. QNH PRESSURE IN HPA 1026.9 1022.2 1019.7 1020.0 1014.8 1010.5 1008.9 1010.0 1016.3 1020.1 1027.1 1027.0 1027.1 DAY-HOUR 27- 6 19- 6 28- 6 8- 6 4- 6 1- 6 3- 6 27- 6 25- 6 24- 6 16- 6 8- 6 MIN. QNH PRESSURE IN HPA 1009.3 1012.0 1009.4 1008.8 1002.0 997.7 996.6 996.8 1002.5 1006.9 1013.3 1016.2 996.6 DAY-HOUR 12- 3 5- 3 19-15 11-12 29-15 19-15 12-15 14-12 18-12 4-12 2-12 15-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 971.4 969.1 966.7 965.3 962.1 956.7 954.4 956.5 959.7 967.1 970.9 973.3 964.4 MAX. QFE PRESSURE IN HPA 975.7 972.5 970.2 970.3 965.4 961.7 960.2 961.1 966.7 970.5 977.8 976.4 977.8 DAY 28 24 28 8 17 1 3 27 25 14 16 8 MIN. QFE PRESSURE IN HPA 961.3 963.9 963.4 963.1 956.8 952.5 951.1 951.6 956.3 961.5 967.0 970.7 951.1 DAY 12 5 20 28 30 20 12 14 19 4 2 15 MEAN QNH PRESSURE IN HPA 1019.8 1017.4 1014.9 1013.4 1010.1 1004.5 1002.1 1004.3 1007.7 1015.3 1019.3 1021.7 1012.5 MAX. QNH PRESSURE IN HPA 1024.3 1020.9 1018.5 1018.6 1013.5 1009.7 1008.1 1009.1 1014.9 1018.8 1026.4 1025.0 1026.4 DAY 28 24 28 8 17 1 3 27 25 14 16 8 MIN. QNH PRESSURE IN HPA 1009.3 1012.0 1011.5 1011.1 1004.6 1000.1 998.7 999.2 1004.1 1009.5 1015.2 1019.0 998.7 DAY 12 5 20 28 30 20 12 14 19 4 2 15 MEAN QFF PRESSURE IN HPA 1019.8 1017.0 1014.1 1011.7 1007.5 1001.3 998.6 1000.8 1004.8 1013.6 1018.7 1021.9 1010.8 MAX. QFF PRESSURE IN HPA 1024.7 1021.1 1018.4 1017.4 1011.0 1006.7 1005.0 1006.2 1012.0 1017.7 1026.1 1025.2 1026.1 DAY 28 24 28 8 17 1 3 27 25 24 16 8 MIN. QFF PRESSURE IN HPA 1009.1 1011.0 1010.6 1009.2 1001.3 996.8 994.5 995.6 1001.3 1007.1 1014.0 1019.2 994.5 DAY 12 5 20 28 30 20 12 14 19 4 2 15 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 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 973.3 970.6 968.0 966.7 963.1 957.4 955.1 957.4 960.9 968.4 972.4 975.0 965.7 MAX. QFE PRESSURE IN HPA 978.2 973.7 971.3 971.6 966.6 962.5 960.9 962.0 968.1 971.7 978.4 978.3 978.4 DAY 27 19 28 8 4 1 3 27 25 24 16 8 MIN. QFE PRESSURE IN HPA 963.2 965.4 964.6 964.0 958.0 953.5 951.8 952.6 957.6 962.9 968.4 972.2 951.8 DAY 12 5 20 28 29 20 12 14 15 4 2 16 MEAN QNH PRESSURE IN HPA 1021.7 1019.0 1016.3 1014.9 1011.1 1005.2 1002.9 1005.3 1008.8 1016.7 1020.8 1023.5 1013.8 MAX. QNH PRESSURE IN HPA 1026.9 1022.2 1019.7 1020.0 1014.8 1010.5 1008.9 1010.0 1016.3 1020.1 1027.1 1027.0 1027.1 DAY 27 19 28 8 4 1 3 27 25 24 16 8 MIN. QNH PRESSURE IN HPA 1011.2 1013.5 1012.7 1012.1 1005.8 1001.2 999.4 1000.2 1005.4 1010.9 1016.7 1020.6 999.4 DAY 12 5 20 28 29 20 12 14 15 4 2 16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 971.9 969.6 967.1 965.5 962.1 956.4 954.0 956.2 959.5 966.7 970.7 973.4 964.4 MAX. QFE PRESSURE IN HPA 976.9 973.1 970.2 970.2 965.8 961.3 960.4 960.7 966.7 969.9 976.5 977.2 977.2 DAY 28 19 28 8 4 1 3 27 25 13 15 8 MIN. QFE PRESSURE IN HPA 962.7 965.4 964.0 962.5 956.7 952.6 950.9 951.6 956.4 960.9 966.7 970.0 950.9 DAY 12 16 20 28 29 20 12 14 19 4 2 15 MEAN QNH PRESSURE IN HPA 1020.3 1017.9 1015.3 1013.6 1010.1 1004.2 1001.7 1004.0 1007.4 1014.9 1019.0 1021.8 1012.5 MAX. QNH PRESSURE IN HPA 1025.5 1021.5 1018.5 1018.5 1014.0 1009.3 1008.3 1008.6 1014.9 1018.2 1025.1 1025.8 1025.8 DAY 28 19 28 8 4 1 3 27 25 13 15 8 MIN. QNH PRESSURE IN HPA 1010.7 1013.5 1012.1 1010.5 1004.5 1000.2 998.5 999.2 1004.2 1008.9 1014.9 1018.3 998.5 DAY 12 16 20 28 29 20 12 14 19 4 2 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 970.4 967.7 965.4 963.6 960.4 954.7 952.3 954.2 957.6 965.0 969.0 971.4 962.6 MAX. QFE PRESSURE IN HPA 975.1 971.5 968.8 968.3 964.0 959.3 958.8 958.7 964.1 968.6 974.9 975.1 975.1 DAY 28 18 22 7 4 1 3 27 25 13 15 8 MIN. QFE PRESSURE IN HPA 962.7 964.2 961.6 960.8 954.5 950.7 949.6 949.3 954.8 959.0 965.2 968.0 949.3 DAY 12 15 19 11 29 19 12 14 18 4 2 15 MEAN QNH PRESSURE IN HPA 1018.7 1016.0 1013.6 1011.6 1008.4 1002.4 999.9 1001.8 1005.4 1013.1 1017.3 1019.8 1010.7 MAX. QNH PRESSURE IN HPA 1023.6 1019.9 1017.1 1016.6 1012.1 1007.2 1006.7 1006.6 1012.2 1016.9 1023.4 1023.6 1023.6 DAY 28 18 22 7 4 1 3 27 25 13 15 8 MIN. QNH PRESSURE IN HPA 1010.7 1012.3 1009.6 1008.8 1002.2 998.2 997.1 996.8 1002.5 1006.9 1013.3 1016.2 996.8 DAY 12 15 19 11 29 19 12 14 18 4 2 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 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 970.8 968.0 965.6 963.6 960.5 954.4 952.3 954.4 957.9 965.5 969.5 971.7 962.8 MAX. QFE PRESSURE IN HPA 975.1 971.8 968.9 968.8 963.9 958.8 958.3 959.6 964.9 969.1 976.0 974.8 976.0 DAY 27 18 1 7 4 1 3 26 25 13 15 8 MIN. QFE PRESSURE IN HPA 964.3 964.3 961.4 960.9 954.3 950.2 949.1 949.8 955.2 959.8 965.3 968.6 949.1 DAY 12 4 19 28 29 19 12 14 18 4 1 15 MEAN QNH PRESSURE IN HPA 1019.2 1016.2 1013.7 1011.6 1008.4 1002.1 999.9 1002.1 1005.7 1013.6 1017.8 1020.1 1010.9 MAX. QNH PRESSURE IN HPA 1023.6 1020.2 1017.2 1017.1 1012.0 1006.7 1006.1 1007.5 1013.0 1017.4 1024.6 1023.3 1024.6 DAY 27 18 1 7 4 1 3 26 25 13 15 8 MIN. QNH PRESSURE IN HPA 1012.4 1012.4 1009.4 1008.9 1002.0 997.7 996.6 997.3 1002.9 1007.7 1013.4 1016.9 996.6 DAY 12 4 19 28 29 19 12 14 18 4 1 15 MEAN QFF PRESSURE IN HPA 1019.1 1015.8 1012.9 1009.9 1005.9 998.8 996.3 998.6 1002.8 1011.8 1017.2 1020.2 1009.1 MAX. QFF PRESSURE IN HPA 1024.1 1019.8 1016.9 1015.9 1009.6 1003.6 1002.8 1004.3 1010.1 1015.9 1024.2 1023.7 1024.2 DAY 27 18 28 7 4 1 3 26 25 23 15 8 MIN. QFF PRESSURE IN HPA 1012.0 1011.7 1008.5 1006.9 998.8 994.4 992.4 993.7 1000.1 1005.4 1012.1 1017.0 992.4 DAY 12 4 19 28 29 19 12 14 11 4 1 15 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 14.8 17.0 17.9 23.8 32.2 36.6 38.4 37.0 34.3 28.9 19.9 15.6 26.4 MINIMUN AIR TEMPERATURE (C) 6.1 8.2 10.6 14.2 18.7 23.4 28.2 25.8 20.6 17.7 12.3 9.3 16.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 9 21 31 31 12 2 0 0 106 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) 1.6 2.8 4.0 9.4 14.2 18.6 23.0 22.2 18.2 11.0 6.8 6.0 1.6 DAY 6 16 2 13 3 3 3 28 16 28 22 28 MAXIMUM AIR TEMPERATURE (C) 21.0 23.5 22.8 29.8 38.6 43.0 44.3 43.7 42.0 35.7 25.3 20.5 32.5 DAYS WITH MAXIMUM TEMP. >=30 0 1 0 15 31 30 31 31 30 30 0 0 199 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 26.0 30.6 27.2 34.6 43.2 48.2 48.0 48.6 45.0 42.4 29.0 23.6 48.6 DAY 14 22 24 29 30 17 10 2 5 1 5 8 DIF. BETWEEN (MAX.-MIN.) (C) 14.9 15.3 12.2 15.6 19.9 19.6 16.1 17.9 21.4 18.0 13.0 11.2 16.2 MEAN DAILY TEMP. (MDT) (C) 13.6 15.9 16.7 22.0 28.7 33.2 36.2 34.7 31.3 26.7 18.8 14.9 24.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 4.8 0.0 46.3 237.7 365.8 472.7 425.6 309.0 176.4 7.0 0.0 2045.3 HEATING DEG. DAYS(BASE 18 0C) 137.5 77.6 47.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 15.3 96.1 373.6 DEWPOINT (MEAN C) 5.5 0.3 7.4 9.5 6.4 11.2 16.8 18.2 13.9 13.6 12.1 11.8 10.6 MIXING RATIO (G/KG) 6.02 4.28 7.17 8.17 6.45 9.17 13.68 14.56 10.91 10.54 9.49 9.09 9.13 VAPOUR PRESSURE (HPA) 9.30 6.62 11.01 12.50 9.87 13.87 20.43 21.80 16.55 16.09 14.57 13.99 13.88 SATURATION DEF. (HPA) 8.37 14.03 10.22 18.41 41.25 51.07 49.40 43.65 41.17 26.29 9.44 4.16 26.45 RELATIVE HUMIDITY (MEAN %) 59 37 57 46 23 25 32 37 33 44 64 79 45 RELATIVE HUMIDITY (MAX. %) 83 63 81 76 46 43 50 58 54 68 87 95 67 RELATIVE HUMIDITY (MIN. %) 38 20 39 27 13 16 22 25 21 28 45 65 30 RELATIVE HUMIDITY (MEAN% 03UTC) 82 63 80 75 46 42 50 58 54 66 86 93 66 RELATIVE HUMIDITY (MEAN% 09UTC) 47 25 45 34 14 17 23 26 21 30 52 72 34 RELATIVE HUMIDITY (MEAN% 15UTC) 57 33 55 41 18 23 29 36 31 43 63 80 42 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 86.5 2.0 139.4 26.4 0.0 14.0 0.0 0.0 0.0 2.4 20.5 50.2 341.4 DAYS WITH PRECIPITATION >=10 3 0 5 1 0 1 0 0 0 0 0 1 11 DAYS WITH PRECIPITATION >= 5 4 0 7 2 0 1 0 0 0 0 2 5 21 DAYS WITH PRECIPITATION >= 1 4 1 9 2 0 1 0 0 0 1 7 9 34 DAYS WITH PRECIPITATION 7 3 13 3 0 1 0 2 0 2 12 10 53 GREATEST DAILY PRECIPITATION 42.0 2.0 54.5 18.0 0.0 14.0 0.0 0.0 0.0 1.9 7.0 18.0 54.5 DAY 25 12 25 24 ** 22 ** ** ** 31 28 1 DAY WITH THUNDER STORM 3 0 4 1 0 2 0 2 0 5 7 2 26 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 0 1 1 1 3 0 0 0 2 0 1 9 WIND DIRECTION (PREVAILING) 315 315 315 315 315 270 315 315 315 315 315 315 315 PREVAILING WIND SPEED(KNOTS) 7.5 8.7 9.5 8.5 10.6 8.0 10.4 10.1 9.9 8.4 7.7 6.4 9.4 PREVAILING WIND PERCENT 14.2 30.0 25.8 26.7 26.5 16.7 31.0 25.8 18.0 17.4 16.0 14.2 21.6 CALMS PERCENT OF WIND 57.4 48.6 52.3 50.0 32.9 46.0 42.6 49.7 54.7 57.4 67.3 70.3 52.4 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 269 299 300 288 285 278 295 286 285 279 287 296 288 VECTOR WIND MAGNITUDE(KNOTS) 1.4 3.2 2.4 2.8 4.9 3.8 4.2 3.1 2.8 2.7 1.4 1.3 2.8 WIND STEADINESES (MEAN %) 50.0 82.1 61.5 66.7 77.8 70.4 79.2 67.4 71.8 71.1 60.9 76.5 70.0 WIND SPEED (MEAN KNOTS) 2.8 3.9 3.9 4.2 6.3 5.4 5.3 4.6 3.9 3.8 2.3 1.7 4.0 FASTEST WIND DIRECTION 300 310 300 120 300 330 240 120 310 290 330 300 120 FASTEST WIND SPEED (KNOTS) 23 29 25 35 23 29 19 45 23 23 39 16 45 DAY 17 15 6 24 5 18 6 25 15 1 5 11 DAYS WITH SKY CLEAR (0-2)/8 23 21 11 18 23 28 30 28 30 22 12 9 255 DAYS WITH P.CLOUDY (3-6)/8 5 5 11 9 8 2 1 3 0 8 14 17 83 DAYS WITH CLOUDY (7-8)/8 3 2 9 3 0 0 0 0 0 1 4 5 27 DAYS WITH VISIBILITY =< 2 KM 1 0 1 0 0 0 0 0 0 1 0 3 6 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 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 971.1 970.5 967.7 965.8 962.6 956.3 952.0 955.1 961.3 967.5 970.4 971.7 964.3 MAX. QFE PRESSURE IN HPA 976.7 975.4 975.9 972.2 968.0 963.3 956.1 961.1 968.0 973.1 975.2 978.3 978.3 DAY-HOUR 10- 6 7- 6 1- 6 12- 6 1- 6 5- 6 25- 6 31- 6 19- 6 31- 6 5- 6 30- 6 MIN. QFE PRESSURE IN HPA 959.1 965.4 959.5 961.8 956.5 947.3 946.3 949.3 956.6 961.7 965.4 966.0 946.3 DAY-HOUR 17- 9 23-12 25-12 27-12 30-12 29-15 11-12 1-15 2-12 1-12 24-12 11-12 MEAN QNH PRESSURE IN HPA 1019.5 1018.9 1015.9 1013.9 1010.6 1004.1 999.6 1002.8 1009.3 1015.7 1018.7 1020.1 1012.4 MAX. QNH PRESSURE IN HPA 1025.3 1023.9 1024.5 1020.6 1016.2 1011.4 1003.9 1009.1 1016.2 1021.5 1023.7 1027.0 1027.0 DAY-HOUR 10- 6 7- 6 1- 6 12- 6 1- 6 5- 6 25- 6 31- 6 19- 6 31- 6 5- 6 30- 6 MIN. QNH PRESSURE IN HPA 1007.0 1013.5 1007.4 1009.8 1004.3 994.7 993.7 996.8 1004.4 1009.7 1013.5 1014.2 993.7 DAY-HOUR 17- 9 23-12 25-12 27-12 30-12 29-15 11-12 1-15 2-12 1-12 24-12 11-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 971.5 970.5 967.9 966.1 963.2 956.9 952.8 955.8 962.0 968.0 970.7 971.8 964.8 MAX. QFE PRESSURE IN HPA 975.2 973.3 975.7 970.5 966.7 962.4 955.7 959.8 967.0 970.7 974.0 976.6 976.6 DAY 11 7 12 13 13 8 22 31 19 13 5 30 MIN. QFE PRESSURE IN HPA 963.1 967.0 961.0 963.4 958.6 948.8 948.7 950.7 958.8 963.5 967.3 966.8 948.7 DAY 17 23 25 27 31 29 11 1 5 1 24 11 MEAN QNH PRESSURE IN HPA 1019.9 1018.9 1016.2 1014.3 1011.2 1004.7 1000.4 1003.5 1010.0 1016.2 1019.0 1020.2 1012.9 MAX. QNH PRESSURE IN HPA 1023.7 1021.8 1024.3 1018.8 1014.9 1010.4 1003.4 1007.7 1015.2 1019.0 1022.5 1025.2 1025.2 DAY 11 7 12 13 13 8 22 31 19 13 5 30 MIN. QNH PRESSURE IN HPA 1011.1 1015.2 1009.0 1011.5 1006.5 996.3 996.2 998.2 1006.7 1011.6 1015.5 1015.0 996.2 DAY 17 23 25 27 31 29 11 1 5 1 24 11 MEAN QFF PRESSURE IN HPA 1020.1 1018.8 1015.7 1013.0 1008.8 1001.5 996.6 1000.0 1007.2 1014.2 1018.3 1020.1 1011.2 MAX. QFF PRESSURE IN HPA 1024.2 1022.2 1023.6 1018.3 1012.8 1007.8 999.4 1004.6 1012.7 1017.5 1021.7 1025.3 1025.3 DAY 11 8 12 13 13 5 22 31 19 28 5 30 MIN. QFF PRESSURE IN HPA 1010.9 1013.8 1007.6 1009.7 1003.3 991.9 992.0 994.2 1003.6 1008.9 1015.3 1015.0 991.9 DAY 17 23 25 27 31 29 11 1 5 1 24 11 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 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 973.1 972.5 969.4 967.4 964.1 957.7 953.5 956.7 963.1 969.5 972.2 973.6 966.1 MAX. QFE PRESSURE IN HPA 976.7 975.4 975.9 972.2 968.0 963.3 956.1 961.1 968.0 973.1 975.2 978.3 978.3 DAY 10 7 1 12 1 5 25 31 19 31 5 30 MIN. QFE PRESSURE IN HPA 963.2 968.4 962.3 964.4 959.8 950.0 949.0 951.8 959.7 964.7 968.8 968.7 949.0 DAY 17 23 25 27 30 29 11 1 5 1 24 11 MEAN QNH PRESSURE IN HPA 1021.5 1020.9 1017.7 1015.7 1012.2 1005.6 1001.2 1004.5 1011.1 1017.8 1020.6 1022.0 1014.2 MAX. QNH PRESSURE IN HPA 1025.3 1023.9 1024.5 1020.6 1016.2 1011.4 1003.9 1009.1 1016.2 1021.5 1023.7 1027.0 1027.0 DAY 10 7 1 12 1 5 25 31 19 31 5 30 MIN. QNH PRESSURE IN HPA 1011.2 1016.7 1010.3 1012.5 1007.7 997.5 996.5 999.4 1007.6 1012.8 1017.1 1017.0 996.5 DAY 17 23 25 27 30 29 11 1 5 1 24 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 971.7 971.3 968.4 966.5 963.1 956.8 952.5 955.5 961.8 967.7 970.5 972.0 964.8 MAX. QFE PRESSURE IN HPA 975.5 974.7 975.9 970.8 966.7 962.7 954.8 960.1 965.9 970.8 975.1 976.8 976.8 DAY 8 7 11 12 8 4 25 31 18 31 4 29 MIN. QFE PRESSURE IN HPA 959.1 967.1 961.4 963.7 958.4 949.0 948.0 951.1 958.4 963.6 967.0 967.3 948.0 DAY 17 23 25 29 30 29 11 1 5 1 24 11 MEAN QNH PRESSURE IN HPA 1020.1 1019.7 1016.7 1014.7 1011.1 1004.6 1000.1 1003.2 1009.8 1016.0 1018.9 1020.4 1012.9 MAX. QNH PRESSURE IN HPA 1024.0 1023.2 1024.5 1019.2 1014.9 1010.7 1002.5 1008.0 1014.1 1019.2 1023.6 1025.4 1025.4 DAY 8 7 11 12 8 4 25 31 18 31 4 29 MIN. QNH PRESSURE IN HPA 1007.0 1015.3 1009.4 1011.8 1006.3 996.5 995.4 998.7 1006.3 1011.7 1015.2 1015.5 995.4 DAY 17 23 25 29 30 29 11 1 5 1 24 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 969.4 969.1 966.3 964.5 961.3 955.2 950.7 953.5 959.7 965.8 969.0 970.4 962.9 MAX. QFE PRESSURE IN HPA 973.0 972.1 974.5 968.5 966.2 961.1 952.9 958.4 964.6 968.9 973.6 975.8 975.8 DAY 8 7 11 12 8 4 21 31 18 31 4 29 MIN. QFE PRESSURE IN HPA 959.1 965.4 959.5 961.8 956.5 947.4 946.3 949.8 956.6 961.7 965.4 966.0 946.3 DAY 17 23 25 27 30 29 11 1 2 1 24 11 MEAN QNH PRESSURE IN HPA 1017.7 1017.4 1014.4 1012.6 1009.3 1002.9 998.3 1001.2 1007.6 1014.0 1017.3 1018.7 1010.9 MAX. QNH PRESSURE IN HPA 1021.4 1020.5 1023.0 1016.8 1014.4 1009.1 1000.5 1006.3 1012.7 1017.2 1022.1 1024.4 1024.4 DAY 8 7 11 12 8 4 21 31 18 31 4 29 MIN. QNH PRESSURE IN HPA 1007.0 1013.5 1007.4 1009.8 1004.3 994.8 993.7 997.3 1004.4 1009.7 1013.5 1014.2 993.7 DAY 17 23 25 27 30 29 11 1 2 1 24 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 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 969.9 969.3 966.5 964.5 961.4 955.0 950.6 953.9 960.0 966.5 969.6 971.1 963.2 MAX. QFE PRESSURE IN HPA 973.8 972.0 974.5 969.0 965.8 960.5 953.1 958.4 964.9 970.4 974.5 976.7 976.7 DAY 8 6 11 12 8 4 21 31 18 31 4 29 MIN. QFE PRESSURE IN HPA 961.2 966.1 960.0 961.9 956.5 947.3 946.5 949.3 956.9 962.1 966.3 967.4 946.5 DAY 17 23 25 28 30 29 11 1 5 1 23 11 MEAN QNH PRESSURE IN HPA 1018.2 1017.6 1014.7 1012.6 1009.3 1002.7 998.2 1001.6 1007.9 1014.7 1017.9 1019.5 1011.2 MAX. QNH PRESSURE IN HPA 1022.3 1020.4 1023.0 1017.3 1014.0 1008.4 1000.7 1006.3 1013.0 1018.7 1023.0 1025.3 1025.3 DAY 8 6 11 12 8 4 21 31 18 31 4 29 MIN. QNH PRESSURE IN HPA 1009.2 1014.3 1007.9 1009.9 1004.3 994.7 993.9 996.8 1004.7 1010.1 1014.5 1015.6 993.9 DAY 17 23 25 28 30 29 11 1 5 1 23 11 MEAN QFF PRESSURE IN HPA 1018.4 1017.5 1014.1 1011.2 1006.9 999.4 994.3 998.1 1005.1 1012.6 1017.1 1019.3 1009.5 MAX. QFF PRESSURE IN HPA 1022.3 1020.8 1022.3 1016.6 1012.0 1005.7 996.7 1003.0 1010.4 1017.0 1022.2 1025.2 1025.2 DAY 8 6 9 12 8 4 21 31 18 31 4 29 MIN. QFF PRESSURE IN HPA 1008.9 1013.0 1006.8 1007.9 1000.9 990.5 989.7 992.8 1001.5 1007.3 1014.2 1015.5 989.7 DAY 17 23 25 28 30 29 11 1 5 1 23 11 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 13.4 16.1 20.3 28.1 34.5 37.9 39.0 37.6 34.3 29.3 23.4 20.0 27.8 MINIMUN AIR TEMPERATURE (C) 7.5 8.0 12.1 15.5 20.8 23.3 27.4 26.4 23.2 17.5 11.4 8.0 16.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 3 17 27 31 31 25 2 0 0 136 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) 0.8 2.4 5.2 10.6 15.0 19.6 23.0 21.8 18.4 13.6 6.8 2.8 0.8 DAY 15 15 6 8 3 14 1 26 25 17 29 10 MAXIMUM AIR TEMPERATURE (C) 17.8 21.7 25.8 34.9 40.9 44.9 45.4 44.3 41.2 36.6 31.5 28.6 34.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 5 28 31 30 31 31 30 31 27 9 253 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 21.2 26.2 36.6 39.0 46.2 47.8 47.6 47.0 43.8 41.4 33.2 31.0 47.8 DAY 1 7 29 22 27 29 1 1 1 1 4 12 DIF. BETWEEN (MAX.-MIN.) (C) 10.3 13.7 13.7 19.4 20.1 21.6 18.0 17.9 18.0 19.1 20.1 20.6 17.7 MEAN DAILY TEMP. (MDT) (C) 12.6 14.9 19.0 25.2 30.9 34.1 36.4 35.3 32.2 27.1 21.4 18.3 25.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 24.5 127.1 306.2 393.1 477.3 444.8 335.7 187.6 25.8 0.8 2322.9 HEATING DEG. DAYS(BASE 18 0C) 166.5 92.3 34.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9.8 303.0 DEWPOINT (MEAN C) 9.3 9.9 13.2 10.8 9.9 15.4 17.7 18.4 17.5 12.3 5.9 2.8 11.9 MIXING RATIO (G/KG) 7.81 8.17 10.12 8.72 8.12 12.34 13.78 14.53 13.74 9.69 6.26 5.23 9.88 VAPOUR PRESSURE (HPA) 12.04 12.57 15.49 13.33 12.38 18.54 20.63 21.78 20.72 14.78 9.65 8.09 15.00 SATURATION DEF. (HPA) 3.84 6.66 9.74 27.09 45.60 51.02 52.11 45.91 35.81 28.62 21.15 17.08 28.72 RELATIVE HUMIDITY (MEAN %) 78 69 67 38 24 29 31 36 41 38 36 36 44 RELATIVE HUMIDITY (MAX. %) 93 90 89 65 41 45 47 60 66 61 57 57 64 RELATIVE HUMIDITY (MIN. %) 63 51 51 24 16 20 22 23 25 23 20 22 30 RELATIVE HUMIDITY (MEAN% 03UTC) 93 89 88 64 41 45 47 59 66 61 57 55 64 RELATIVE HUMIDITY (MEAN% 09UTC) 71 57 57 27 17 21 22 23 27 25 23 26 33 RELATIVE HUMIDITY (MEAN% 15UTC) 76 70 66 34 22 27 29 36 38 38 37 35 42 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 146.8 42.3 37.5 4.0 0.0 3.0 2.0 45.0 0.0 5.0 0.0 0.3 285.9 DAYS WITH PRECIPITATION >=10 4 2 1 0 0 0 0 1 0 0 0 0 8 DAYS WITH PRECIPITATION >= 5 5 2 2 0 0 0 0 1 0 1 0 0 11 DAYS WITH PRECIPITATION >= 1 9 3 7 1 0 1 1 2 0 1 0 0 25 DAYS WITH PRECIPITATION 12 4 11 1 0 1 2 3 0 1 0 3 38 GREATEST DAILY PRECIPITATION 46.0 29.0 18.0 4.0 0.0 3.0 2.0 42.0 0.0 5.0 0.0 0.3 46.0 DAY 2 12 19 23 ** 17 16 26 ** 1 ** 4 DAY WITH THUNDER STORM 5 1 2 1 0 1 1 1 2 0 0 1 15 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 2 0 0 0 1 0 2 0 2 0 0 0 7 WIND DIRECTION (PREVAILING) 315 315 315 315 315 225 315 270 315 315 315 315 315 PREVAILING WIND SPEED(KNOTS) 8.9 8.0 7.5 9.0 11.1 11.2 11.5 9.1 9.1 6.1 5.8 5.4 8.7 PREVAILING WIND PERCENT 13.5 12.9 23.2 28.0 31.0 16.7 21.9 13.5 23.3 12.3 17.3 16.1 18.6 CALMS PERCENT OF WIND 65.2 61.4 51.0 38.7 38.1 42.0 36.1 45.2 51.3 58.7 71.3 76.8 52.9 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 287 287 299 284 290 250 278 245 284 261 298 294 279 VECTOR WIND MAGNITUDE(KNOTS) 1.5 1.0 1.7 3.3 4.5 3.2 3.1 2.2 2.8 0.8 1.2 1.0 2.1 WIND STEADINESES (MEAN %) 62.5 30.3 47.2 61.1 70.3 54.2 47.7 44.9 73.7 25.0 70.6 76.9 52.5 WIND SPEED (MEAN KNOTS) 2.4 3.3 3.6 5.4 6.4 5.9 6.5 4.9 3.8 3.2 1.7 1.3 4.0 FASTEST WIND DIRECTION 340 290 110 310 310 300 50 360 210 60 300 300 50 FASTEST WIND SPEED (KNOTS) 29 27 23 23 27 23 39 35 17 23 16 16 39 DAY 26 12 18 6 19 1 17 8 19 14 17 5 DAYS WITH SKY CLEAR (0-2)/8 12 19 12 21 25 28 26 25 29 31 27 25 280 DAYS WITH P.CLOUDY (3-6)/8 13 7 9 8 6 2 5 6 1 0 3 3 63 DAYS WITH CLOUDY (7-8)/8 6 2 10 1 0 0 0 0 0 0 0 3 22 DAYS WITH VISIBILITY =< 2 KM 5 1 2 0 0 0 1 0 0 0 0 0 9 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 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 971.4 970.3 968.5 965.0 961.7 956.3 952.6 955.8 960.0 965.5 969.7 971.9 964.1 MAX. QFE PRESSURE IN HPA 977.6 977.0 973.6 972.4 967.9 961.9 958.1 961.0 965.4 972.8 974.6 977.6 977.6 DAY-HOUR 4- 6 4- 6 6- 6 12- 6 8- 6 5- 6 22- 6 29- 6 26- 6 25- 6 30- 6 7- 6 MIN. QFE PRESSURE IN HPA 963.4 963.6 962.1 959.1 956.1 948.9 946.8 950.6 955.5 959.2 964.8 966.2 946.8 DAY-HOUR 13- 3 12- 9 15-12 21-15 30-12 30-12 8-15 13-12 2-12 1-12 17-12 21-12 MEAN QNH PRESSURE IN HPA 1019.8 1018.6 1016.7 1013.1 1009.7 1004.0 1000.3 1003.6 1007.9 1013.6 1018.0 1020.3 1012.1 MAX. QNH PRESSURE IN HPA 1026.2 1025.6 1022.1 1020.8 1016.1 1009.9 1005.9 1009.0 1013.5 1021.2 1023.1 1026.2 1026.2 DAY-HOUR 4- 6 4- 6 6- 6 12- 6 8- 6 5- 6 22- 6 29- 6 26- 6 25- 6 30- 6 7- 6 MIN. QNH PRESSURE IN HPA 1011.5 1011.7 1010.1 1007.0 1003.9 996.4 994.2 998.1 1003.2 1007.1 1012.9 1014.4 994.2 DAY-HOUR 13- 3 12- 9 15-12 21-15 30-12 30-12 8-15 13-12 2-12 1-12 17-12 21-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 971.4 970.5 968.6 965.4 962.4 957.0 953.4 956.7 960.7 966.1 970.3 972.4 964.6 MAX. QFE PRESSURE IN HPA 975.9 974.9 971.6 971.4 967.0 961.0 957.2 960.4 964.5 971.4 973.0 976.2 976.2 DAY 4 24 6 12 8 5 22 25 26 25 21 10 MIN. QFE PRESSURE IN HPA 963.4 964.0 963.9 960.4 957.1 951.5 948.9 953.1 957.9 961.3 967.6 968.5 948.9 DAY 13 12 15 21 30 30 8 13 2 1 17 21 MEAN QNH PRESSURE IN HPA 1019.8 1018.9 1016.9 1013.5 1010.4 1004.8 1001.1 1004.5 1008.7 1014.3 1018.7 1020.8 1012.7 MAX. QNH PRESSURE IN HPA 1024.5 1023.4 1020.0 1019.8 1015.2 1009.0 1005.0 1008.3 1012.6 1019.8 1021.4 1024.8 1024.8 DAY 4 24 6 12 8 5 22 25 26 25 21 10 MIN. QNH PRESSURE IN HPA 1011.5 1012.1 1012.0 1008.3 1004.9 999.1 996.4 1000.7 1005.7 1009.3 1015.8 1016.8 996.4 DAY 13 12 15 21 30 30 8 13 2 1 17 21 MEAN QFF PRESSURE IN HPA 1020.0 1018.8 1016.0 1011.7 1007.6 1001.4 997.3 1000.9 1005.7 1012.3 1017.7 1020.5 1010.8 MAX. QFF PRESSURE IN HPA 1024.2 1023.9 1020.2 1018.3 1012.6 1005.7 1001.2 1005.4 1010.0 1018.2 1021.1 1025.2 1025.2 DAY 15 24 6 12 8 17 22 29 26 25 30 10 MIN. QFF PRESSURE IN HPA 1011.1 1010.9 1010.5 1005.8 1001.7 995.4 992.6 997.1 1002.4 1006.4 1014.5 1016.6 992.6 DAY 13 12 30 21 30 30 12 13 2 1 17 21 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 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 973.2 972.1 970.2 966.6 963.2 957.7 954.1 957.6 961.8 967.4 971.8 974.0 965.8 MAX. QFE PRESSURE IN HPA 977.6 977.0 973.6 972.4 967.9 961.9 958.1 961.0 965.4 972.8 974.6 977.6 977.6 DAY 4 4 6 12 8 5 22 29 26 25 30 7 MIN. QFE PRESSURE IN HPA 967.7 965.8 965.3 961.5 956.9 951.5 949.6 953.4 958.4 962.6 968.7 969.4 949.6 DAY 13 12 15 21 30 30 12 13 3 1 17 21 MEAN QNH PRESSURE IN HPA 1021.6 1020.5 1018.5 1014.8 1011.3 1005.5 1001.8 1005.4 1009.7 1015.6 1020.2 1022.5 1014.0 MAX. QNH PRESSURE IN HPA 1026.2 1025.6 1022.1 1020.8 1016.1 1009.9 1005.9 1009.0 1013.5 1021.2 1023.1 1026.2 1026.2 DAY 4 4 6 12 8 5 22 29 26 25 30 7 MIN. QNH PRESSURE IN HPA 1015.9 1014.0 1013.4 1009.5 1004.7 999.1 997.1 1001.1 1006.3 1010.6 1017.0 1017.7 997.1 DAY 13 12 15 21 30 30 12 13 3 1 17 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 971.8 970.8 969.1 965.6 962.2 956.5 953.0 956.1 960.3 965.7 969.8 972.0 964.4 MAX. QFE PRESSURE IN HPA 975.5 975.3 972.3 971.2 966.3 961.1 957.2 959.4 964.4 971.3 973.3 975.4 975.5 DAY 4 4 6 12 7 5 22 24 25 25 30 10 MIN. QFE PRESSURE IN HPA 967.2 963.6 964.1 960.8 956.7 950.2 949.0 951.8 956.9 961.5 966.7 967.6 949.0 DAY 13 12 15 21 30 30 8 13 3 1 17 21 MEAN QNH PRESSURE IN HPA 1020.2 1019.1 1017.4 1013.7 1010.2 1004.3 1000.6 1003.9 1008.3 1013.8 1018.2 1020.4 1012.5 MAX. QNH PRESSURE IN HPA 1024.0 1023.8 1020.7 1019.6 1014.5 1009.1 1005.0 1007.3 1012.5 1019.7 1021.8 1023.9 1024.0 DAY 4 4 6 12 7 5 22 24 25 25 30 10 MIN. QNH PRESSURE IN HPA 1015.4 1011.7 1012.2 1008.8 1004.5 997.7 996.5 999.4 1004.7 1009.5 1014.9 1015.8 996.5 DAY 13 12 15 21 30 30 8 13 3 1 17 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 970.1 968.8 967.1 963.7 960.5 955.0 951.2 954.2 958.4 963.9 968.0 970.2 962.6 MAX. QFE PRESSURE IN HPA 974.6 972.8 970.0 968.8 964.4 959.3 955.2 957.1 962.3 969.5 971.2 973.4 974.6 DAY 4 4 6 12 7 5 22 24 25 25 30 10 MIN. QFE PRESSURE IN HPA 965.9 964.6 962.1 959.7 956.1 948.9 947.5 950.6 955.5 959.2 964.8 966.2 947.5 DAY 29 12 15 21 30 30 8 13 2 1 17 21 MEAN QNH PRESSURE IN HPA 1018.5 1017.1 1015.3 1011.8 1008.5 1002.7 998.8 1001.9 1006.2 1012.0 1016.3 1018.6 1010.6 MAX. QNH PRESSURE IN HPA 1023.1 1021.2 1018.3 1017.1 1012.5 1007.2 1002.9 1004.9 1010.3 1017.8 1019.6 1021.9 1023.1 DAY 4 4 6 12 7 5 22 24 25 25 30 10 MIN. QNH PRESSURE IN HPA 1014.1 1012.7 1010.1 1007.6 1003.9 996.4 994.9 998.1 1003.2 1007.1 1012.9 1014.4 994.9 DAY 29 12 15 21 30 30 8 13 2 1 17 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 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 970.7 969.3 967.5 963.8 960.5 955.2 951.5 954.6 958.7 964.5 968.7 970.9 963.0 MAX. QFE PRESSURE IN HPA 975.6 973.4 970.8 968.4 964.6 961.4 955.4 958.9 962.5 969.9 971.8 974.0 975.6 DAY 4 3 7 11 7 16 22 28 25 25 30 10 MIN. QFE PRESSURE IN HPA 966.5 965.1 962.3 959.1 956.3 949.2 946.8 950.9 956.0 959.8 965.4 967.3 946.8 DAY 29 12 15 21 30 30 8 13 2 3 17 21 MEAN QNH PRESSURE IN HPA 1019.1 1017.6 1015.8 1011.8 1008.4 1002.9 999.1 1002.3 1006.6 1012.6 1017.0 1019.3 1011.0 MAX. QNH PRESSURE IN HPA 1024.1 1021.9 1019.2 1016.7 1012.7 1009.4 1003.1 1006.8 1010.5 1018.2 1020.2 1022.5 1024.1 DAY 4 3 7 11 7 16 22 28 25 25 30 10 MIN. QNH PRESSURE IN HPA 1014.7 1013.2 1010.3 1007.0 1004.1 996.7 994.2 998.5 1003.8 1007.7 1013.5 1015.5 994.2 DAY 29 12 15 21 30 30 8 13 2 3 17 21 MEAN QFF PRESSURE IN HPA 1019.2 1017.4 1014.8 1009.9 1005.5 999.4 995.3 998.7 1003.5 1010.5 1016.0 1018.8 1009.1 MAX. QFF PRESSURE IN HPA 1023.5 1021.7 1019.2 1015.0 1010.1 1006.8 999.3 1004.2 1007.9 1016.7 1019.7 1022.8 1023.5 DAY 4 4 7 11 7 16 22 28 25 25 30 10 MIN. QFF PRESSURE IN HPA 1014.5 1012.7 1009.3 1004.3 1001.0 992.9 990.2 994.8 1000.5 1004.9 1012.3 1015.2 990.2 DAY 29 12 15 21 30 30 8 13 2 1 17 21 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 15.8 18.2 20.2 28.8 35.5 38.7 37.7 38.0 33.9 29.3 23.3 17.2 28.1 MINIMUN AIR TEMPERATURE (C) 9.0 12.1 10.9 16.2 22.2 24.2 26.2 25.8 23.2 17.3 12.4 5.3 17.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 1 20 29 31 31 25 1 0 0 138 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 1 1 TEMPERATURE RECORDS LOWEST(C) 3.0 7.0 6.4 10.4 18.4 20.6 21.2 23.6 19.8 12.8 6.4 0.0 0.0 DAY 5 1 8 13 19 25 3 4 18 24 30 26 MAXIMUM AIR TEMPERATURE (C) 20.9 23.2 26.4 35.9 41.9 45.7 44.3 44.7 40.5 37.1 30.2 25.3 34.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 7 29 31 30 31 31 30 31 14 0 234 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 26.0 28.0 34.8 41.2 45.0 47.4 49.0 46.8 45.0 39.6 36.0 28.2 49.0 DAY 1 28 27 27 28 3 19 9 4 1 1 6 DIF. BETWEEN (MAX.-MIN.) (C) 11.9 11.1 15.5 19.7 19.7 21.5 18.1 18.9 17.3 19.8 17.8 20.0 17.6 MEAN DAILY TEMP. (MDT) (C) 15.0 17.7 18.7 26.0 32.1 34.9 35.2 35.2 31.8 27.2 21.3 15.3 25.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 2.2 11.4 151.3 343.0 418.5 440.3 441.1 325.1 191.0 41.4 0.0 2365.3 HEATING DEG. DAYS(BASE 18 0C) 95.4 26.5 27.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5.6 83.3 238.4 DEWPOINT (MEAN C) 7.9 12.0 6.7 5.5 10.2 7.2 15.3 14.0 17.7 12.6 8.5 3.2 10.1 MIXING RATIO (G/KG) 7.10 9.24 6.61 6.04 8.90 7.09 12.10 10.91 13.75 9.91 7.57 5.26 8.71 VAPOUR PRESSURE (HPA) 10.95 14.19 10.15 9.27 13.49 10.74 18.14 16.44 20.73 15.12 11.63 8.13 13.25 SATURATION DEF. (HPA) 7.65 7.31 14.93 33.34 47.37 62.03 49.94 52.82 34.87 28.25 18.81 12.98 30.86 RELATIVE HUMIDITY (MEAN %) 63 70 47 26 24 18 30 27 42 39 42 43 39 RELATIVE HUMIDITY (MAX. %) 84 89 75 50 39 34 49 44 65 60 60 64 59 RELATIVE HUMIDITY (MIN. %) 46 52 28 14 17 10 19 17 27 24 28 28 26 RELATIVE HUMIDITY (MEAN% 03UTC) 83 89 74 50 39 34 49 44 65 60 59 63 59 RELATIVE HUMIDITY (MEAN% 09UTC) 53 62 34 16 17 11 20 17 28 26 32 33 29 RELATIVE HUMIDITY (MEAN% 15UTC) 59 65 43 22 24 14 27 24 40 38 41 39 36 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 98.3 49.9 61.0 0.0 0.0 0.0 0.0 0.0 4.0 0.0 0.0 2.0 215.2 DAYS WITH PRECIPITATION >=10 3 3 1 0 0 0 0 0 0 0 0 0 7 DAYS WITH PRECIPITATION >= 5 4 3 3 0 0 0 0 0 0 0 0 0 10 DAYS WITH PRECIPITATION >= 1 5 7 3 0 0 0 0 0 1 0 0 1 17 DAYS WITH PRECIPITATION 8 12 4 0 0 0 0 0 1 0 0 1 26 GREATEST DAILY PRECIPITATION 47.0 13.0 47.0 0.0 0.0 0.0 0.0 0.0 4.0 0.0 0.0 2.0 47.0 DAY 18 13 2 ** ** ** ** ** 28 ** ** 12 DAY WITH THUNDER STORM 3 1 2 0 0 0 0 2 4 0 0 1 13 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 0 2 1 5 6 9 2 0 0 2 0 27 WIND DIRECTION (PREVAILING) 315 315 315 315 315 315 315 225 315 315 315 315 315 PREVAILING WIND SPEED(KNOTS) 8.1 7.1 8.6 11.8 12.9 12.7 10.9 10.9 7.8 5.7 8.2 8.0 9.7 PREVAILING WIND PERCENT 20.0 13.6 20.6 26.7 32.3 27.3 14.8 14.8 15.3 17.4 26.7 8.4 19.2 CALMS PERCENT OF WIND 61.9 64.3 57.4 45.3 29.0 46.0 47.1 47.7 54.0 58.7 59.3 80.0 54.2 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 308 285 298 290 300 290 262 238 255 265 299 308 286 VECTOR WIND MAGNITUDE(KNOTS) 1.5 0.3 1.5 4.5 6.1 5.0 2.7 2.1 1.7 1.8 2.9 0.8 2.4 WIND STEADINESES (MEAN %) 53.6 12.5 42.9 81.8 70.9 84.7 52.9 44.7 50.0 64.3 87.9 57.1 58.5 WIND SPEED (MEAN KNOTS) 2.8 2.4 3.5 5.5 8.6 5.9 5.1 4.7 3.4 2.8 3.3 1.4 4.1 FASTEST WIND DIRECTION 220 300 320 300 300 310 310 60 90 130 290 310 220 FASTEST WIND SPEED (KNOTS) 33 25 17 29 33 29 19 31 19 29 21 25 33 DAY 18 21 2 19 21 15 16 22 10 4 16 16 DAYS WITH SKY CLEAR (0-2)/8 14 8 23 27 31 30 31 29 29 31 25 27 305 DAYS WITH P.CLOUDY (3-6)/8 11 12 4 3 0 0 0 2 1 0 4 4 41 DAYS WITH CLOUDY (7-8)/8 6 8 4 0 0 0 0 0 0 0 1 0 19 DAYS WITH VISIBILITY =< 2 KM 4 0 1 0 0 0 0 0 0 0 0 0 5 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 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 970.4 970.1 965.9 963.9 958.9 955.3 952.2 954.8 958.9 965.2 968.9 972.2 963.1 MAX. QFE PRESSURE IN HPA 975.0 975.3 970.9 969.6 965.4 962.8 957.7 961.5 966.8 969.9 975.3 977.3 977.3 DAY-HOUR 12- 6 12- 6 20- 6 11- 6 1- 6 1- 6 8- 6 19- 6 30- 6 23- 6 14- 6 24- 6 MIN. QFE PRESSURE IN HPA 962.5 964.0 960.9 958.8 953.2 950.3 947.0 949.4 954.4 959.7 962.0 966.9 947.0 DAY-HOUR 18-12 6- 3 2-12 27-15 20-15 24-12 20-12 13-12 10-12 8-12 1-12 31-12 MEAN QNH PRESSURE IN HPA 1018.7 1018.4 1014.1 1012.0 1006.7 1003.0 999.8 1002.5 1006.8 1013.3 1017.2 1020.6 1011.1 MAX. QNH PRESSURE IN HPA 1023.5 1023.8 1019.3 1017.9 1013.5 1010.8 1005.5 1009.5 1015.0 1018.2 1023.8 1025.9 1025.9 DAY-HOUR 12- 6 12- 6 20- 6 11- 6 1- 6 1- 6 8- 6 19- 6 30- 6 23- 6 14- 6 24- 6 MIN. QNH PRESSURE IN HPA 1010.5 1012.1 1008.9 1006.7 1000.8 997.8 994.4 996.9 1002.1 1007.6 1010.0 1015.1 994.4 DAY-HOUR 18-12 6- 3 2-12 27-15 20-15 24-12 20-12 13-12 10-12 8-12 1-12 31-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 970.6 970.3 966.2 964.4 959.7 956.0 953.1 955.7 959.5 965.9 969.4 972.8 963.6 MAX. QFE PRESSURE IN HPA 973.0 973.8 969.4 968.0 964.5 961.8 956.7 960.4 965.7 968.4 973.1 975.8 975.8 DAY 16 12 19 11 1 2 1 19 30 17 15 24 MIN. QFE PRESSURE IN HPA 962.9 964.0 962.3 960.7 956.0 951.8 949.4 951.9 956.9 963.2 964.2 969.3 949.4 DAY 18 6 2 8 21 24 20 7 7 8 1 31 MEAN QNH PRESSURE IN HPA 1018.9 1018.7 1014.3 1012.5 1007.6 1003.8 1000.7 1003.4 1007.4 1014.0 1017.7 1021.2 1011.7 MAX. QNH PRESSURE IN HPA 1021.4 1022.3 1017.7 1016.2 1012.6 1009.8 1004.5 1008.3 1013.8 1016.7 1021.5 1024.4 1024.4 DAY 16 12 19 11 1 2 1 19 30 17 15 24 MIN. QNH PRESSURE IN HPA 1010.9 1012.1 1010.3 1008.6 1003.8 999.4 996.9 999.5 1004.7 1011.2 1012.3 1017.6 996.9 DAY 18 6 2 8 21 24 20 7 7 8 1 31 MEAN QFF PRESSURE IN HPA 1018.8 1018.0 1013.6 1010.6 1004.6 1000.4 997.2 999.9 1004.4 1012.1 1016.7 1021.3 1009.8 MAX. QFF PRESSURE IN HPA 1021.7 1021.5 1017.4 1015.1 1009.7 1006.8 1001.0 1004.7 1011.4 1014.9 1020.8 1024.8 1024.8 DAY 23 12 19 11 1 2 1 19 30 17 15 24 MIN. QFF PRESSURE IN HPA 1010.6 1010.8 1009.1 1006.7 1000.5 995.9 992.8 996.1 1001.2 1009.0 1010.6 1017.7 992.8 DAY 18 6 2 8 21 24 20 14 10 3 1 31 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 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 972.1 971.8 967.8 965.6 960.6 956.8 953.8 956.5 960.8 967.3 970.9 974.3 964.9 MAX. QFE PRESSURE IN HPA 975.0 975.3 970.9 969.6 965.4 962.8 957.7 961.5 966.8 969.9 975.3 977.3 977.3 DAY 12 12 20 11 1 1 8 19 30 23 14 24 MIN. QFE PRESSURE IN HPA 964.7 966.5 962.9 962.1 956.3 952.5 950.5 952.3 957.9 963.8 965.5 970.7 950.5 DAY 18 6 2 8 21 24 12 7 10 8 1 31 MEAN QNH PRESSURE IN HPA 1020.5 1020.2 1016.0 1013.8 1008.5 1004.6 1001.5 1004.3 1008.7 1015.5 1019.2 1022.8 1013.0 MAX. QNH PRESSURE IN HPA 1023.5 1023.8 1019.3 1017.9 1013.5 1010.8 1005.5 1009.5 1015.0 1018.2 1023.8 1025.9 1025.9 DAY 12 12 20 11 1 1 8 19 30 23 14 24 MIN. QNH PRESSURE IN HPA 1012.8 1014.7 1010.9 1010.1 1004.1 1000.1 998.0 999.9 1005.7 1011.9 1013.6 1019.0 998.0 DAY 18 6 2 8 21 24 12 7 10 8 1 31 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 970.9 970.8 966.6 964.5 959.3 955.6 952.6 955.1 959.3 965.3 969.0 972.3 963.4 MAX. QFE PRESSURE IN HPA 973.8 974.3 969.6 968.5 964.2 961.8 955.9 959.8 964.7 968.1 973.1 975.0 975.0 DAY 15 12 18 11 1 1 8 19 30 23 14 23 MIN. QFE PRESSURE IN HPA 963.8 964.6 962.9 961.0 955.4 951.7 949.5 951.1 956.6 961.9 963.5 968.6 949.5 DAY 18 6 2 27 21 24 12 7 18 8 1 31 MEAN QNH PRESSURE IN HPA 1019.2 1019.1 1014.8 1012.6 1007.2 1003.4 1000.2 1002.8 1007.2 1013.5 1017.3 1020.7 1011.5 MAX. QNH PRESSURE IN HPA 1022.3 1022.8 1017.9 1016.8 1012.3 1009.8 1003.7 1007.7 1012.8 1016.3 1021.5 1023.5 1023.5 DAY 15 12 18 11 1 1 8 19 30 23 14 23 MIN. QNH PRESSURE IN HPA 1011.9 1012.7 1010.9 1009.0 1003.1 999.3 997.0 998.7 1004.4 1009.9 1011.6 1016.9 997.0 DAY 18 6 2 27 21 24 12 7 18 8 1 31 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 968.9 968.7 964.5 962.7 957.5 954.1 950.9 953.3 957.4 963.5 967.3 970.5 961.6 MAX. QFE PRESSURE IN HPA 971.8 972.3 967.5 965.7 962.2 960.2 954.2 958.0 962.7 966.1 971.5 973.1 973.1 DAY 12 12 19 11 1 1 1 18 30 23 14 23 MIN. QFE PRESSURE IN HPA 962.5 964.2 960.9 959.4 953.7 950.3 947.0 949.4 954.4 959.7 962.0 966.9 947.0 DAY 18 6 2 27 21 24 20 13 10 8 1 31 MEAN QNH PRESSURE IN HPA 1017.2 1017.0 1012.6 1010.7 1005.3 1001.8 998.5 1000.9 1005.2 1011.5 1015.5 1018.8 1009.6 MAX. QNH PRESSURE IN HPA 1020.2 1020.7 1015.7 1013.8 1010.2 1008.1 1001.9 1005.8 1010.7 1014.3 1019.9 1021.5 1021.5 DAY 12 12 19 11 1 1 1 18 30 23 14 23 MIN. QNH PRESSURE IN HPA 1010.5 1012.3 1008.9 1007.3 1001.4 997.8 994.4 996.9 1002.1 1007.6 1010.0 1015.1 994.4 DAY 18 6 2 27 21 24 20 13 10 8 1 31 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 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 969.5 969.0 964.7 962.6 957.3 954.0 950.9 953.6 957.8 964.1 968.0 971.1 961.9 MAX. QFE PRESSURE IN HPA 972.6 972.4 967.9 965.6 961.4 960.5 954.0 958.2 963.4 966.7 972.4 973.6 973.6 DAY 16 12 18 11 1 1 1 18 30 23 14 23 MIN. QFE PRESSURE IN HPA 963.9 965.2 961.2 958.8 953.2 950.5 947.8 949.9 955.0 960.2 963.3 967.6 947.8 DAY 18 5 2 27 20 23 19 13 18 8 1 31 MEAN QNH PRESSURE IN HPA 1017.8 1017.3 1012.9 1010.6 1005.1 1001.7 998.5 1001.2 1005.6 1012.2 1016.3 1019.5 1009.9 MAX. QNH PRESSURE IN HPA 1021.0 1020.8 1016.1 1013.7 1009.4 1008.4 1001.7 1006.0 1011.5 1014.9 1020.8 1022.1 1022.1 DAY 16 12 18 11 1 1 1 18 30 23 14 23 MIN. QNH PRESSURE IN HPA 1012.0 1013.3 1009.2 1006.7 1000.8 998.0 995.2 997.4 1002.7 1008.1 1011.4 1015.8 995.2 DAY 18 5 2 27 20 23 19 13 18 8 1 31 MEAN QFF PRESSURE IN HPA 1017.6 1016.6 1012.1 1008.7 1002.0 998.2 994.9 997.7 1002.6 1010.1 1015.2 1019.5 1007.9 MAX. QFF PRESSURE IN HPA 1020.6 1020.1 1015.7 1012.4 1006.5 1005.5 998.1 1002.4 1008.9 1013.2 1019.8 1022.6 1022.6 DAY 16 12 18 11 1 1 1 18 30 23 14 23 MIN. QFF PRESSURE IN HPA 1011.3 1012.5 1008.0 1004.0 998.0 994.6 991.2 993.8 999.7 1005.9 1009.6 1015.8 991.2 DAY 18 6 1 27 20 23 19 13 10 8 1 31 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION FOROUDGAH LAMERD (99583) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 22 N LONGITUDE 53 15 E DATA PROCESSING CENTER ELEVATION 411.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 16.2 17.6 22.1 31.3 36.3 36.6 38.8 37.2 33.4 28.6 20.1 16.7 27.9 MINIMUN AIR TEMPERATURE (C) 8.3 8.2 11.0 18.7 23.2 22.2 26.0 25.6 21.9 17.5 12.9 8.9 17.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 9 22 24 31 30 20 1 0 0 137 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 2.6 4.4 4.0 12.0 18.0 16.6 22.0 20.0 16.8 13.2 7.0 3.4 2.6 DAY 15 4 7 3 4 16 28 4 24 27 26 31 MAXIMUM AIR TEMPERATURE (C) 21.9 23.9 28.8 38.2 42.7 43.9 45.4 44.1 40.4 35.9 25.6 22.5 34.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 12 30 31 30 31 31 30 31 4 0 230 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 26.4 29.6 35.0 41.6 44.8 47.4 48.4 46.6 45.2 40.8 35.0 29.4 48.4 DAY 1 26 22 21 28 30 17 28 9 1 1 4 DIF. BETWEEN (MAX.-MIN.) (C) 13.6 15.7 17.8 19.5 19.5 21.7 19.4 18.5 18.5 18.4 12.7 13.6 17.4 MEAN DAILY TEMP. (MDT) (C) 15.1 16.1 19.9 28.4 32.9 33.1 35.7 34.8 31.2 26.7 19.3 15.7 25.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.8 23.2 223.5 369.7 362.1 455.2 428.5 304.7 176.1 16.5 0.7 2361.0 HEATING DEG. DAYS(BASE 18 0C) 91.3 70.1 12.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 16.2 82.3 272.1 DEWPOINT (MEAN C) 6.2 3.8 -1.1 4.8 3.0 7.2 10.5 14.3 13.5 10.7 11.0 8.3 7.7 MIXING RATIO (G/KG) 6.46 5.37 3.80 5.69 5.14 6.91 8.77 11.42 10.90 8.65 8.71 7.23 7.42 VAPOUR PRESSURE (HPA) 9.96 8.28 5.87 8.73 7.84 10.47 13.24 17.19 16.48 13.24 13.39 11.16 11.32 SATURATION DEF. (HPA) 9.22 13.09 22.56 39.87 55.54 54.72 59.12 49.00 37.51 28.22 11.22 8.89 32.41 RELATIVE HUMIDITY (MEAN %) 56 44 24 20 14 19 21 29 34 37 59 61 35 RELATIVE HUMIDITY (MAX. %) 75 68 44 35 27 34 36 50 53 60 82 83 54 RELATIVE HUMIDITY (MIN. %) 39 26 13 14 9 11 12 16 20 21 42 42 22 RELATIVE HUMIDITY (MEAN% 03UTC) 74 68 43 35 27 34 35 49 52 60 80 83 53 RELATIVE HUMIDITY (MEAN% 09UTC) 47 33 16 15 10 11 13 17 22 24 47 51 26 RELATIVE HUMIDITY (MEAN% 15UTC) 53 40 21 18 12 16 19 28 34 36 59 59 33 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 38.8 0.0 0.0 0.0 0.0 0.0 3.0 3.4 0.0 14.0 31.5 74.3 165.0 DAYS WITH PRECIPITATION >=10 1 0 0 0 0 0 0 0 0 1 1 2 5 DAYS WITH PRECIPITATION >= 5 2 0 0 0 0 0 0 0 0 1 2 2 7 DAYS WITH PRECIPITATION >= 1 5 0 0 0 0 0 1 1 0 1 4 2 14 DAYS WITH PRECIPITATION 7 1 0 0 0 0 1 3 0 1 7 3 23 GREATEST DAILY PRECIPITATION 27.0 0.0 0.0 0.0 0.0 0.0 3.0 3.0 0.0 14.0 18.0 39.0 39.0 DAY 17 ** ** ** **