STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.5 3.2 8.6 17.6 20.6 27.4 30.7 30.2 25.8 18.8 12.3 4.8 17.0 MINIMUN AIR TEMPERATURE (C) 0.1 -0.5 4.9 12.0 14.6 20.9 24.6 24.1 19.9 13.8 7.9 1.5 12.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 16 30 29 14 0 0 0 89 DAYS WITH MINIMUM TEMP. <=-4 1 6 0 0 0 0 0 0 0 0 0 0 7 DAYS WITH FREEZING MIN.<= 0 18 15 2 0 0 0 0 0 0 0 0 16 51 TEMPERATURE RECORDS LOWEST(C) -4.0 -8.0 -3.6 5.0 8.0 16.6 20.0 20.2 11.8 11.2 3.0 -3.5 -8.0 DAY 28 13 11 13 6 19 15 28 28 16 28 22 MAXIMUM AIR TEMPERATURE (C) 6.1 6.2 11.6 21.0 24.7 31.0 34.2 33.8 29.3 22.0 15.4 7.4 20.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 23 31 30 18 0 0 0 102 DAYS WITH MAXIMUM TEMP. <= 0 0 3 0 0 0 0 0 0 0 0 0 0 3 TEMPERATURE RECORDS HIGHEST(C) 9.6 12.5 19.5 27.5 29.5 35.6 37.0 38.5 35.0 24.6 22.5 13.0 38.5 DAY 31 28 30 22 29 29 7 6 8 27 3 10 DIF. BETWEEN (MAX.-MIN.) (C) 6.0 6.7 6.7 9.0 10.1 10.1 9.6 9.7 9.4 8.2 7.5 5.9 8.2 MEAN DAILY TEMP. (MDT) (C) 3.1 2.8 8.3 16.5 19.6 26.0 29.4 29.0 24.6 17.9 11.7 4.5 16.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 4.4 17.7 149.3 260.3 247.0 125.7 0.0 0.0 0.0 804.5 HEATING DEG. DAYS(BASE 18 0C) 462.0 424.3 301.7 74.1 21.2 0.0 0.0 0.0 2.6 22.8 190.1 419.6 1918.3 DEWPOINT (MEAN C) -3.3 -5.3 0.5 -2.1 -0.3 0.8 3.6 2.9 3.5 0.5 -2.2 -4.9 -0.5 MIXING RATIO (G/KG) 3.58 3.15 4.86 4.16 4.75 5.09 6.00 5.81 6.07 4.77 3.84 3.30 4.61 VAPOUR PRESSURE (HPA) 4.93 4.33 6.64 5.70 6.48 6.94 8.16 7.92 8.30 6.56 5.30 4.52 6.31 SATURATION DEF. (HPA) 3.01 3.73 4.99 15.19 18.60 30.15 36.68 35.78 26.21 15.48 9.41 4.34 16.96 RELATIVE HUMIDITY (MEAN %) 64 57 60 30 29 20 19 19 26 32 39 53 37 RELATIVE HUMIDITY (MAX. %) 75 72 74 42 45 30 27 27 34 45 50 69 49 RELATIVE HUMIDITY (MIN. %) 53 46 48 22 19 14 15 15 20 24 30 41 29 RELATIVE HUMIDITY (MEAN% 03UTC) 71 65 66 41 41 29 27 26 33 44 49 63 46 RELATIVE HUMIDITY (MEAN% 09UTC) 60 55 59 27 25 18 17 18 24 28 34 48 34 RELATIVE HUMIDITY (MEAN% 15UTC) 66 57 56 27 24 16 16 17 24 31 40 56 36 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 22.1 33.7 124.6 22.7 8.7 4.1 0.0 0.0 0.0 2.3 0.0 74.9 293.1 DAYS WITH PRECIPITATION >=10 0 1 5 1 0 0 0 0 0 0 0 4 11 DAYS WITH PRECIPITATION >= 5 1 2 6 2 0 0 0 0 0 0 0 5 16 DAYS WITH PRECIPITATION >= 1 6 7 12 3 5 1 0 0 0 0 0 10 44 DAYS WITH PRECIPITATION 11 16 15 13 7 5 0 0 2 5 2 15 91 GREATEST DAILY PRECIPITATION 9.0 11.0 31.0 13.0 2.0 4.0 0.0 0.0 0.0 1.0 0.0 20.0 31.0 DAY 22 21 6 4 3 19 ** ** ** 15 ** 9 DAY WITH THUNDER STORM 0 0 2 5 2 2 0 0 0 2 1 0 14 DAYS WITH SNOW OR SLEET 5 6 2 0 0 0 0 0 0 0 0 5 18 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 180 180 180 180 270 180 180 180 180 180 180 180 180 PREVAILING WIND SPEED(KNOTS) 3.6 4.3 4.9 6.2 14.0 5.9 6.3 5.6 5.6 5.7 5.0 3.9 5.5 PREVAILING WIND PERCENT 21.3 27.1 21.9 25.3 25.8 36.0 52.3 62.6 52.0 40.6 33.3 20.0 34.6 CALMS PERCENT OF WIND 33.5 15.7 12.9 2.7 9.7 10.7 6.5 2.6 0.7 1.9 13.3 11.0 10.1 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 224 215 224 239 252 213 186 182 204 201 215 300 217 VECTOR WIND MAGNITUDE(KNOTS) 1.3 1.7 1.3 3.8 5.1 2.5 4.0 3.4 3.4 2.8 2.2 1.0 2.4 WIND STEADINESES (MEAN %) 46.4 42.5 29.5 50.7 63.7 43.9 71.4 68.0 59.6 51.9 47.8 23.3 45.3 WIND SPEED (MEAN KNOTS) 2.8 4.0 4.4 7.5 8.0 5.7 5.6 5.0 5.7 5.4 4.6 4.3 5.3 FASTEST WIND DIRECTION 270 280 270 320 300 270 250 180 290 350 270 270 320 FASTEST WIND SPEED (KNOTS) 33 35 29 49 47 31 25 25 31 27 29 29 49 DAY 27 4 7 26 16 8 8 10 24 28 19 4 DAYS WITH SKY CLEAR (0-2)/8 8 9 3 10 17 24 30 31 29 17 20 15 213 DAYS WITH P.CLOUDY (3-6)/8 16 7 14 18 13 6 1 0 1 11 10 7 104 DAYS WITH CLOUDY (7-8)/8 7 12 14 2 1 0 0 0 0 3 0 9 48 DAYS WITH VISIBILITY =< 2 KM 13 5 2 0 0 0 0 0 0 0 0 5 25 DURATION OF SUNSHINE HOURS 126.9 111.8 115.5 220.7 269.7 329.8 348.1 346.6 302.6 216.3 181.4 109.5 2678.9 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 860.0 860.1 858.0 858.6 855.6 855.8 854.2 855.7 860.0 862.9 863.2 859.2 858.6 MAX. QFE PRESSURE IN HPA 868.8 871.0 865.1 863.8 862.6 863.2 858.6 860.7 866.4 867.3 868.4 867.9 871.0 DAY-HOUR 12- 6 15- 6 29- 6 19- 6 25- 6 23- 6 1- 6 23- 6 27- 6 13- 6 24- 6 17- 6 MIN. QFE PRESSURE IN HPA 850.2 852.6 847.5 848.6 847.9 847.1 848.4 849.9 852.8 858.2 856.5 851.2 847.1 DAY-HOUR 25-12 4-12 7- 3 4-15 22-15 11-15 13-15 12-15 8-15 4-12 5-12 25-12 MEAN QNH PRESSURE IN HPA 1019.9 1019.9 1017.5 1018.2 1014.8 1015.0 1013.1 1014.9 1019.8 1023.2 1023.5 1018.9 1018.2 MAX. QNH PRESSURE IN HPA 1029.9 1032.4 1025.7 1024.2 1022.8 1023.5 1018.2 1020.6 1027.2 1028.2 1029.5 1028.9 1032.4 DAY-HOUR 12- 6 15- 6 29- 6 19- 6 25- 6 23- 6 1- 6 23- 6 27- 6 13- 6 24- 6 17- 6 MIN. QNH PRESSURE IN HPA 1008.6 1011.3 1005.5 1006.7 1005.9 1005.0 1006.5 1008.2 1011.5 1017.8 1015.8 1009.7 1005.0 DAY-HOUR 25-12 4-12 7- 3 4-15 22-15 11-15 13-15 12-15 8-15 4-12 5-12 25-12 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 860.1 860.1 858.1 859.0 856.2 856.4 854.9 856.4 860.5 863.4 863.6 859.5 859.0 MAX. QFE PRESSURE IN HPA 867.4 869.9 863.1 863.1 861.6 862.0 858.1 860.3 865.7 867.1 867.5 866.7 869.9 DAY 12 15 29 19 25 23 1 23 27 13 24 17 MIN. QFE PRESSURE IN HPA 851.2 853.4 847.5 851.5 849.1 847.9 849.2 851.6 854.5 860.0 858.3 854.4 847.5 DAY 26 21 7 10 23 12 8 12 8 15 6 26 MEAN QNH PRESSURE IN HPA 1020.0 1020.0 1017.6 1018.7 1015.4 1015.7 1013.9 1015.7 1020.4 1023.7 1023.9 1019.2 1018.7 MAX. QNH PRESSURE IN HPA 1028.3 1031.2 1023.4 1023.4 1021.7 1022.1 1017.6 1020.2 1026.4 1028.0 1028.4 1027.5 1031.2 DAY 12 15 29 19 25 23 1 23 27 13 24 17 MIN. QNH PRESSURE IN HPA 1009.7 1012.2 1005.5 1010.1 1007.3 1005.9 1007.4 1010.2 1013.5 1019.8 1017.9 1013.4 1005.5 DAY 26 21 7 10 23 12 8 12 8 15 6 26 MEAN QFF PRESSURE IN HPA 1022.0 1022.5 1016.1 1012.5 1007.3 1003.9 1000.3 1002.5 1009.8 1017.2 1021.2 1020.6 1013.0 MAX. QFF PRESSURE IN HPA 1031.2 1037.4 1026.3 1020.4 1018.1 1010.9 1004.9 1008.1 1020.6 1021.5 1027.9 1030.9 1037.4 DAY 12 15 12 14 25 23 12 23 27 13 24 17 MIN. QFF PRESSURE IN HPA 1011.5 1011.1 1005.5 1003.4 1000.0 992.8 992.8 996.8 1000.6 1013.5 1012.1 1012.7 992.8 DAY 26 21 7 10 23 12 8 12 8 5 5 1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 861.1 861.1 859.0 859.7 856.7 857.0 855.5 857.0 861.2 864.0 864.4 860.3 859.8 MAX. QFE PRESSURE IN HPA 868.8 871.0 865.1 863.8 862.6 863.2 858.6 860.7 866.4 867.3 868.4 867.9 871.0 DAY 12 15 29 19 25 23 1 23 27 13 24 17 MIN. QFE PRESSURE IN HPA 852.4 854.4 848.7 852.3 849.4 848.7 850.1 851.7 854.5 860.5 858.6 855.9 848.7 DAY 26 21 7 10 23 12 8 12 8 5 6 25 MEAN QNH PRESSURE IN HPA 1021.1 1021.0 1018.7 1019.5 1016.0 1016.4 1014.6 1016.4 1021.2 1024.5 1024.9 1020.2 1019.5 MAX. QNH PRESSURE IN HPA 1029.9 1032.4 1025.7 1024.2 1022.8 1023.5 1018.2 1020.6 1027.2 1028.2 1029.5 1028.9 1032.4 DAY 12 15 29 19 25 23 1 23 27 13 24 17 MIN. QNH PRESSURE IN HPA 1011.1 1013.4 1006.8 1011.0 1007.6 1006.8 1008.4 1010.3 1013.5 1020.4 1018.2 1015.1 1006.8 DAY 26 21 7 10 23 12 8 12 8 5 6 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 859.9 860.3 858.3 859.0 856.0 856.2 854.7 856.1 860.3 863.0 863.2 859.1 858.8 MAX. QFE PRESSURE IN HPA 867.3 870.8 864.7 863.0 862.1 862.5 858.0 859.8 865.6 866.6 867.0 866.4 870.8 DAY 12 15 12 15 25 23 1 23 27 13 24 17 MIN. QFE PRESSURE IN HPA 851.1 853.4 848.7 851.9 848.5 848.7 849.7 851.3 854.1 859.9 856.9 853.8 848.5 DAY 25 4 7 10 23 12 8 12 8 4 5 25 MEAN QNH PRESSURE IN HPA 1019.7 1020.1 1017.9 1018.6 1015.2 1015.5 1013.7 1015.3 1020.2 1023.3 1023.5 1018.8 1018.5 MAX. QNH PRESSURE IN HPA 1028.2 1032.2 1025.2 1023.3 1022.2 1022.7 1017.5 1019.6 1026.2 1027.4 1027.9 1027.2 1032.2 DAY 12 15 12 15 25 23 1 23 27 13 24 17 MIN. QNH PRESSURE IN HPA 1009.6 1012.2 1006.8 1010.5 1006.6 1006.8 1008.0 1009.8 1013.0 1019.7 1016.3 1012.7 1006.6 DAY 25 4 7 10 23 12 8 12 8 4 5 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 859.2 859.3 857.2 857.7 854.8 855.0 853.2 854.7 858.9 861.9 862.1 858.4 857.7 MAX. QFE PRESSURE IN HPA 867.2 869.8 863.5 862.0 860.3 860.8 856.4 858.2 863.5 865.7 866.4 865.4 869.8 DAY 12 15 12 19 25 23 1 23 30 13 24 17 MIN. QFE PRESSURE IN HPA 850.2 852.6 848.3 850.2 848.2 848.2 848.5 850.1 852.9 858.2 856.5 851.2 848.2 DAY 25 4 6 4 22 11 8 12 8 4 5 25 MEAN QNH PRESSURE IN HPA 1019.0 1019.1 1016.6 1017.2 1013.8 1014.0 1012.0 1013.8 1018.5 1022.1 1022.3 1017.9 1017.2 MAX. QNH PRESSURE IN HPA 1028.1 1031.1 1023.8 1022.1 1020.2 1020.7 1015.7 1017.8 1023.8 1026.4 1027.2 1026.0 1031.1 DAY 12 15 12 19 25 23 1 23 30 13 24 17 MIN. QNH PRESSURE IN HPA 1008.6 1011.3 1006.4 1008.6 1006.3 1006.3 1006.6 1008.4 1011.7 1017.8 1015.8 1009.7 1006.3 DAY 25 4 6 4 22 11 8 12 8 4 5 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 859.8 859.7 857.3 857.5 854.6 854.5 852.8 854.4 858.9 862.3 862.6 858.7 857.8 MAX. QFE PRESSURE IN HPA 867.5 869.8 863.6 862.0 859.7 860.0 856.0 858.0 863.8 866.1 867.1 866.0 869.8 DAY 12 15 12 14 25 23 11 31 30 13 24 17 MIN. QFE PRESSURE IN HPA 850.2 853.1 848.5 848.6 847.9 847.1 848.4 849.9 852.8 858.7 857.1 851.5 847.1 DAY 25 4 6 4 22 11 13 12 8 4 5 25 MEAN QNH PRESSURE IN HPA 1019.6 1019.5 1016.7 1017.0 1013.6 1013.5 1011.6 1013.4 1018.6 1022.4 1022.9 1018.4 1017.3 MAX. QNH PRESSURE IN HPA 1028.4 1031.1 1024.0 1022.1 1019.5 1019.8 1015.2 1017.5 1024.2 1026.8 1028.0 1026.7 1031.1 DAY 12 15 12 14 25 23 11 31 30 13 24 17 MIN. QNH PRESSURE IN HPA 1008.6 1011.9 1006.6 1006.7 1005.9 1005.0 1006.5 1008.2 1011.5 1018.3 1016.5 1010.1 1005.0 DAY 25 4 6 4 22 11 13 12 8 4 5 25 MEAN QFF PRESSURE IN HPA 1021.7 1021.9 1015.2 1010.7 1005.5 1001.8 997.9 1000.3 1008.0 1016.0 1020.2 1019.8 1011.6 MAX. QFF PRESSURE IN HPA 1031.1 1036.3 1026.0 1019.0 1013.8 1008.3 1002.1 1005.7 1017.8 1021.1 1027.4 1030.7 1036.3 DAY 12 15 12 14 25 23 11 27 27 13 24 17 MIN. QFF PRESSURE IN HPA 1010.4 1011.8 1006.1 1002.9 997.7 991.8 992.7 994.4 998.0 1011.4 1010.9 1010.3 991.8 DAY 25 28 6 4 22 11 7 6 8 4 5 12 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 JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.7 3.5 5.4 14.7 17.3 26.4 31.7 27.7 24.1 18.8 12.7 ***** ***** MINIMUN AIR TEMPERATURE (C) -2.5 -0.1 1.3 9.4 12.3 19.8 25.8 21.9 17.8 12.9 8.3 ***** ***** DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 10 31 22 0 0 0 **** **** DAYS WITH MINIMUM TEMP. <=-4 12 3 4 0 0 0 0 0 0 0 0 **** **** DAYS WITH FREEZING MIN.<= 0 24 17 12 0 0 0 0 0 0 0 2 **** **** TEMPERATURE RECORDS LOWEST(C) -8.0 -5.2 -6.0 3.5 4.5 15.0 21.5 15.0 11.0 9.5 -1.2 ***** ***** DAY 28 12 11 3 5 9 12 31 2 18 28 ** MAXIMUM AIR TEMPERATURE (C) 3.3 6.6 8.4 18.2 20.7 29.8 35.1 31.3 27.7 22.5 16.2 ***** ***** DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 13 31 24 2 0 0 **** **** DAYS WITH MAXIMUM TEMP. <= 0 5 0 1 0 0 0 0 0 0 0 0 **** **** TEMPERATURE RECORDS HIGHEST(C) 8.2 12.4 17.5 25.0 29.4 35.8 38.4 35.5 30.6 26.2 20.6 ***** ***** DAY 2 22 29 21 30 30 5 25 25 13 2 ** DIF. BETWEEN (MAX.-MIN.) (C) 5.8 6.7 7.1 8.8 8.4 10.0 9.3 9.4 9.9 9.6 7.9 ***** ***** MEAN DAILY TEMP. (MDT) (C) 0.4 3.2 4.9 13.8 16.5 24.8 30.4 26.6 22.8 17.7 12.2 ***** ***** COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 8.1 114.8 292.9 175.0 60.0 0.1 0.0 ****** ****** HEATING DEG. DAYS(BASE 18 0C) 546.3 427.8 407.1 125.0 81.7 0.0 0.0 0.0 0.5 30.2 173.5 ****** ****** DEWPOINT (MEAN C) -7.4 -7.5 -5.1 -2.8 2.5 2.2 3.1 3.9 -1.4 -2.9 -2.4 ***** ***** MIXING RATIO (G/KG) 2.67 2.67 3.33 3.91 5.57 5.50 5.84 6.21 4.18 3.81 3.96 ****** ****** VAPOUR PRESSURE (HPA) 3.66 3.66 4.56 5.35 7.62 7.50 7.95 8.48 5.74 5.24 5.45 ****** ****** SATURATION DEF. 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OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 **** 1675 VECTOR WIND DIRECTION (MEAN) 231 308 231 258 247 225 184 190 211 220 209 *** *** VECTOR WIND MAGNITUDE(KNOTS) 1.3 0.9 1.7 3.4 2.9 3.6 3.5 3.4 3.3 2.4 1.4 **** **** WIND STEADINESES (MEAN %) 29.5 15.5 35.4 45.9 46.0 51.4 60.3 68.0 61.1 50.0 32.6 ***** ***** WIND SPEED (MEAN KNOTS) 4.4 5.8 4.8 7.4 6.3 7.0 5.8 5.0 5.4 4.8 4.3 **** **** FASTEST WIND DIRECTION 270 310 300 290 20 330 270 20 270 240 240 *** *** FASTEST WIND SPEED (KNOTS) 23 39 29 33 39 39 37 35 29 25 33 *** *** DAY 14 14 22 21 17 9 9 12 21 26 26 ** DAYS WITH SKY CLEAR (0-2)/8 10 9 12 10 10 24 28 27 29 27 15 **** **** DAYS WITH P.CLOUDY (3-6)/8 16 14 12 14 13 6 3 3 1 3 13 **** **** DAYS WITH CLOUDY (7-8)/8 5 6 7 6 8 0 0 1 0 1 2 **** **** DAYS WITH VISIBILITY =< 2 KM 9 1 3 0 1 0 1 0 0 0 0 **** **** DURATION OF SUNSHINE HOURS 112.4 108.2 157.6 147.4 179.5 309.5 332.2 318.4 308.4 270.4 155.7 ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 859.3 856.2 858.1 856.6 858.8 855.4 855.0 857.8 860.3 861.7 862.4 ****** ****** MAX. QFE PRESSURE IN HPA 869.4 864.2 868.1 861.1 864.1 861.9 859.0 865.3 865.9 867.1 871.3 ****** ****** DAY-HOUR 10- 6 16- 6 12- 6 20- 6 2- 9 11- 6 6- 6 31- 6 2- 6 30- 6 4- 6 **-** MIN. QFE PRESSURE IN HPA 851.0 848.0 847.0 850.0 853.6 849.0 849.8 850.7 854.1 856.6 852.0 ****** ****** DAY-HOUR 30-12 24-15 31- 3 18- 3 4- 9 27-12 10-15 1-15 17-15 5-15 26- 3 **-** MEAN QNH PRESSURE IN HPA 1019.0 1015.4 1017.6 1016.0 1018.4 1014.5 1014.1 1017.3 1020.2 1021.8 1022.5 ****** ****** MAX. QNH PRESSURE IN HPA 1030.6 1024.6 1029.1 1021.1 1024.5 1022.0 1018.7 1025.9 1026.6 1028.0 1032.8 ****** ****** DAY-HOUR 10- 6 16- 6 12- 6 20- 6 2- 9 11- 6 6- 6 31- 6 2- 6 30- 6 4- 6 **-** MIN. QNH PRESSURE IN HPA 1009.5 1006.0 1004.9 1008.3 1012.5 1007.2 1008.1 1009.1 1013.0 1015.9 1010.6 ****** ****** DAY-HOUR 30-12 24-15 31- 3 18- 3 4- 9 27-12 10-15 1-15 17-15 5-15 26- 3 **-** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 859.3 856.2 858.2 856.8 859.1 856.0 855.7 858.6 860.9 862.3 862.6 ****** ****** MAX. QFE PRESSURE IN HPA 869.0 863.1 867.3 860.4 863.7 861.3 858.3 864.9 865.2 866.6 870.2 ****** ****** DAY 10 16 12 20 29 11 6 31 2 30 4 ** MIN. QFE PRESSURE IN HPA 852.4 849.4 847.0 850.0 854.4 850.3 852.5 853.2 855.9 858.7 852.0 ****** ****** DAY 1 25 31 18 4 27 10 1 18 6 26 ** MEAN QNH PRESSURE IN HPA 1019.0 1015.4 1017.8 1016.2 1018.8 1015.2 1014.8 1018.2 1020.9 1022.4 1022.8 ****** ****** MAX. QNH PRESSURE IN HPA 1030.2 1023.4 1028.2 1020.3 1024.1 1021.3 1017.9 1025.4 1025.8 1027.4 1031.5 ****** ****** DAY 10 16 12 20 29 11 6 31 2 30 4 ** MIN. QNH PRESSURE IN HPA 1011.1 1007.6 1004.9 1008.3 1013.4 1008.7 1011.2 1012.0 1015.1 1018.3 1010.6 ****** ****** DAY 1 25 31 18 4 27 10 1 18 6 26 ** MEAN QFF PRESSURE IN HPA 1023.1 1017.6 1019.0 1011.6 1012.4 1003.9 1000.7 1006.1 1011.5 1016.3 1019.8 ****** ****** MAX. QFF PRESSURE IN HPA 1035.7 1028.0 1034.6 1018.5 1022.0 1010.0 1005.2 1016.7 1018.7 1023.0 1028.0 ****** ****** DAY 10 16 12 8 3 11 14 31 2 30 4 ** MIN. QFF PRESSURE IN HPA 1013.5 1006.0 1003.2 1002.4 1006.6 995.8 997.0 997.6 1005.4 1010.7 1008.3 ****** ****** DAY 1 25 31 18 19 27 19 1 18 6 26 ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 860.2 857.1 859.1 857.7 859.7 856.5 856.2 859.2 861.7 863.1 863.5 ****** ****** MAX. QFE PRESSURE IN HPA 869.4 864.2 868.1 861.1 864.1 861.9 859.0 865.3 865.9 867.1 871.3 ****** ****** DAY 10 16 12 20 29 11 6 31 2 30 4 ** MIN. QFE PRESSURE IN HPA 854.2 850.3 847.9 850.6 854.6 850.8 852.9 853.6 856.4 859.9 854.3 ****** ****** DAY 17 11 31 18 4 27 10 1 18 6 26 ** MEAN QNH PRESSURE IN HPA 1020.1 1016.5 1018.8 1017.1 1019.5 1015.9 1015.5 1018.9 1021.8 1023.4 1023.8 ****** ****** MAX. QNH PRESSURE IN HPA 1030.6 1024.6 1029.1 1021.1 1024.5 1022.0 1018.7 1025.9 1026.6 1028.0 1032.8 ****** ****** DAY 10 16 12 20 29 11 6 31 2 30 4 ** MIN. QNH PRESSURE IN HPA 1013.2 1008.7 1005.9 1009.0 1013.6 1009.3 1011.7 1012.5 1015.7 1019.7 1013.3 ****** ****** DAY 17 11 31 18 4 27 10 1 18 6 26 ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 859.2 856.4 858.4 857.0 859.3 855.8 855.6 858.4 860.7 861.8 862.3 ****** ****** MAX. QFE PRESSURE IN HPA 868.9 863.2 868.1 860.5 864.1 860.9 858.6 864.4 865.6 865.9 870.2 ****** ****** DAY 10 16 12 8 2 11 6 31 2 30 4 ** MIN. QFE PRESSURE IN HPA 853.0 849.3 848.0 850.4 853.6 850.3 852.7 852.9 855.6 859.0 854.1 ****** ****** DAY 30 11 31 18 4 27 19 1 18 5 25 ** MEAN QNH PRESSURE IN HPA 1018.9 1015.6 1018.0 1016.4 1019.0 1015.0 1014.7 1018.0 1020.6 1021.9 1022.4 ****** ****** MAX. QNH PRESSURE IN HPA 1030.0 1023.5 1029.1 1020.4 1024.5 1020.8 1018.2 1024.9 1026.2 1026.6 1031.5 ****** ****** DAY 10 16 12 8 2 11 6 31 2 30 4 ** MIN. QNH PRESSURE IN HPA 1011.8 1007.5 1006.0 1008.8 1012.5 1008.7 1011.4 1011.7 1014.8 1018.7 1013.0 ****** ****** DAY 30 11 31 18 4 27 19 1 18 5 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 858.7 855.5 857.3 855.8 858.0 854.5 854.0 856.6 859.2 860.7 861.5 ****** ****** MAX. QFE PRESSURE IN HPA 867.8 862.3 866.6 859.8 863.5 859.0 857.0 862.5 863.3 865.3 868.9 ****** ****** DAY 9 16 12 26 2 10 14 31 2 29 4 ** MIN. QFE PRESSURE IN HPA 851.0 848.3 847.7 850.1 854.1 849.0 850.2 851.0 854.5 857.1 853.3 ****** ****** DAY 30 24 30 18 4 27 10 1 17 5 25 ** MEAN QNH PRESSURE IN HPA 1018.3 1014.6 1016.7 1015.0 1017.5 1013.5 1012.9 1016.0 1018.9 1020.6 1021.6 ****** ****** MAX. QNH PRESSURE IN HPA 1028.8 1022.5 1027.4 1019.6 1023.8 1018.7 1016.4 1022.7 1023.6 1025.9 1030.0 ****** ****** DAY 9 16 12 26 2 10 14 31 2 29 4 ** MIN. QNH PRESSURE IN HPA 1009.5 1006.4 1005.7 1008.4 1013.0 1007.2 1008.6 1009.5 1013.5 1016.5 1012.1 ****** ****** DAY 30 24 30 18 4 27 10 1 17 5 25 ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 859.2 855.9 857.5 855.9 857.9 854.2 853.6 856.3 859.1 860.9 862.0 ****** ****** MAX. QFE PRESSURE IN HPA 868.1 862.8 866.9 858.7 863.7 858.8 856.4 861.8 862.9 866.3 869.1 ****** ****** DAY 9 16 12 20 2 10 14 31 1 29 4 ** MIN. QFE PRESSURE IN HPA 851.0 848.0 848.3 850.6 853.6 849.0 849.8 850.7 854.1 856.6 853.0 ****** ****** DAY 30 24 30 18 4 27 10 1 17 5 25 ** MEAN QNH PRESSURE IN HPA 1018.9 1015.1 1016.9 1015.1 1017.4 1013.2 1012.5 1015.6 1018.8 1020.8 1022.1 ****** ****** MAX. QNH PRESSURE IN HPA 1029.1 1023.0 1027.7 1018.3 1024.1 1018.4 1015.7 1021.9 1023.1 1027.1 1030.3 ****** ****** DAY 9 16 12 20 2 10 14 31 1 29 4 ** MIN. QNH PRESSURE IN HPA 1009.5 1006.0 1006.4 1009.0 1012.5 1007.2 1008.1 1009.1 1013.0 1015.9 1011.8 ****** ****** DAY 30 24 30 18 4 27 10 1 17 5 25 ** MEAN QFF PRESSURE IN HPA 1023.0 1017.2 1017.9 1010.5 1011.0 1001.9 998.4 1003.6 1009.4 1014.7 1019.2 ****** ****** MAX. QFF PRESSURE IN HPA 1035.1 1027.1 1033.0 1017.2 1023.6 1007.9 1003.2 1013.3 1016.5 1022.6 1027.0 ****** ****** DAY 9 16 12 2 2 2 14 31 30 29 4 ** MIN. QFF PRESSURE IN HPA 1011.2 1003.6 1002.9 1002.7 1002.9 994.4 993.5 995.0 1002.9 1008.1 1006.6 ****** ****** DAY 2 24 30 22 31 27 18 1 17 5 25 ** PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. 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(HPA) 3.28 ****** 7.50 13.71 18.73 32.03 34.35 33.32 30.37 14.94 4.37 4.49 ****** RELATIVE HUMIDITY (MEAN %) 57 *** 39 32 29 18 21 21 19 28 63 59 *** RELATIVE HUMIDITY (MAX. %) 67 *** 57 48 43 31 29 30 28 40 79 73 *** RELATIVE HUMIDITY (MIN. %) 48 *** 27 21 20 11 16 16 14 20 51 47 *** RELATIVE HUMIDITY (MEAN% 03UTC) 64 *** 52 45 41 28 29 30 28 38 74 69 *** RELATIVE HUMIDITY (MEAN% 09UTC) 52 *** 35 27 25 18 19 19 16 24 58 52 *** RELATIVE HUMIDITY (MEAN% 15UTC) 59 *** 34 28 25 12 17 19 18 29 64 63 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 39.9 ****** 60.3 25.0 8.9 2.0 0.0 1.0 0.0 5.1 66.6 19.2 ****** DAYS WITH PRECIPITATION >=10 1 **** 3 0 0 0 0 0 0 0 2 1 **** DAYS WITH PRECIPITATION >= 5 2 **** 4 3 0 0 0 0 0 0 6 1 **** DAYS WITH PRECIPITATION >= 1 6 **** 9 6 5 2 0 1 0 2 10 3 **** DAYS WITH PRECIPITATION 8 **** 13 10 12 3 0 1 0 3 17 6 **** GREATEST DAILY PRECIPITATION 22.0 ****** 17.0 8.0 3.0 1.0 0.0 1.0 0.0 3.0 16.0 13.0 ****** DAY 8 ** 8 8 14 1 ** 29 ** 29 3 16 DAY WITH THUNDER STORM 0 **** 1 0 2 1 0 1 0 0 0 0 **** DAYS WITH SNOW OR SLEET 7 **** 4 0 0 0 0 0 0 0 2 4 **** DAYS WITH DUST 0 **** 0 1 4 1 0 0 0 0 1 0 **** WIND DIRECTION (PREVAILING) 225 *** 225 225 225 225 225 180 180 180 180 180 *** PREVAILING WIND SPEED(KNOTS) 4.1 **** 7.0 7.7 7.6 7.2 5.7 5.0 5.3 4.8 4.3 3.1 **** PREVAILING WIND PERCENT 28.4 ***** 21.3 30.7 27.7 49.3 39.3 44.5 34.0 44.5 34.7 37.4 ***** CALMS PERCENT OF WIND 14.8 ***** 2.6 4.7 7.1 2.0 4.0 5.8 8.0 11.0 13.3 22.6 ***** NO. OF WIND OBSERVATION 155 **** 155 150 155 150 150 155 150 155 150 155 1680 VECTOR WIND DIRECTION (MEAN) 237 *** 265 255 258 231 202 187 158 194 161 174 *** VECTOR WIND MAGNITUDE(KNOTS) 1.5 **** 2.6 4.1 4.3 4.1 3.4 3.3 2.8 2.5 1.6 1.4 **** WIND STEADINESES (MEAN %) 48.4 ***** 41.3 60.3 61.4 62.1 68.0 73.3 65.1 59.5 43.2 58.3 ***** WIND SPEED (MEAN KNOTS) 3.1 **** 6.3 6.8 7.0 6.6 5.0 4.5 4.3 4.2 3.7 2.4 **** FASTEST WIND DIRECTION 270 *** 320 300 280 190 50 330 220 240 280 240 *** FASTEST WIND SPEED (KNOTS) 23 *** 33 39 41 56 14 19 21 31 33 17 *** DAY 25 ** 9 20 23 3 28 8 26 11 10 10 DAYS WITH SKY CLEAR (0-2)/8 18 **** 15 8 9 27 27 30 28 18 9 13 **** DAYS WITH P.CLOUDY (3-6)/8 6 **** 11 17 16 3 4 1 2 11 10 9 **** DAYS WITH CLOUDY (7-8)/8 7 **** 5 5 6 0 0 0 0 2 11 9 **** DAYS WITH VISIBILITY =< 2 KM 1 **** 0 0 0 1 0 0 0 0 2 2 **** DURATION OF SUNSHINE HOURS 148.4 ****** 197.2 188.7 240.8 356.5 347.3 346.2 308.0 227.7 126.1 144.0 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. 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QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 860.4 ****** 858.7 857.8 858.3 856.7 856.8 858.5 859.6 865.3 861.8 863.0 ****** MAX. QFE PRESSURE IN HPA 868.9 ****** 865.6 864.6 863.8 864.5 861.7 861.6 864.8 870.5 867.2 868.0 ****** DAY 6 ** 31 1 9 23 27 25 23 17 22 26 MIN. QFE PRESSURE IN HPA 850.2 ****** 849.4 852.3 855.6 853.4 852.7 853.6 855.6 859.0 851.6 856.3 ****** DAY 9 ** 22 13 7 4 13 12 14 2 14 5 MEAN QNH PRESSURE IN HPA 1020.2 ****** 1018.3 1017.3 1017.9 1016.0 1016.1 1018.1 1019.3 1025.9 1021.9 1023.3 ****** MAX. QNH PRESSURE IN HPA 1030.0 ****** 1026.2 1025.1 1024.2 1025.0 1021.8 1021.7 1025.3 1031.9 1028.1 1029.0 ****** DAY 6 ** 31 1 9 23 27 25 23 17 22 26 MIN. 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QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 860.0 ****** 857.8 856.6 857.2 854.6 854.5 856.3 857.4 863.9 860.9 862.4 ****** MAX. QFE PRESSURE IN HPA 868.6 ****** 863.6 861.6 862.4 861.7 859.8 859.2 863.2 868.0 866.7 866.6 ****** DAY 6 ** 31 16 9 22 27 31 23 17 22 6 MIN. 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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 JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.8 5.4 12.0 17.8 21.7 27.7 31.4 31.5 23.3 17.2 12.3 3.3 17.4 MINIMUN AIR TEMPERATURE (C) 2.1 1.5 7.4 12.3 15.3 21.1 25.2 25.5 17.7 12.6 8.2 0.0 12.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 17 29 31 2 0 0 0 79 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 7 7 DAYS WITH FREEZING MIN.<= 0 6 8 0 0 0 0 0 0 0 0 0 16 30 TEMPERATURE RECORDS LOWEST(C) -1.0 -3.6 2.4 2.0 8.5 11.8 17.8 23.0 14.5 9.0 2.0 -7.2 -7.2 DAY 12 4 17 5 7 5 1 10 21 25 26 7 MAXIMUM AIR TEMPERATURE (C) 8.3 8.2 15.1 21.6 25.0 31.4 35.0 35.0 27.0 20.5 15.1 6.3 20.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 4 25 31 31 5 0 0 0 96 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 3 3 TEMPERATURE RECORDS HIGHEST(C) 16.0 14.8 22.0 29.0 31.0 34.4 38.8 38.0 34.0 23.6 19.5 12.6 38.8 DAY 3 27 31 22 31 16 30 1 1 2 3 3 DIF. BETWEEN (MAX.-MIN.) (C) 6.2 6.7 7.7 9.3 9.7 10.3 9.8 9.5 9.3 7.9 6.9 6.3 8.3 MEAN DAILY TEMP. (MDT) (C) 5.2 4.9 11.2 16.9 20.2 26.3 30.1 30.3 22.3 16.6 11.6 3.2 16.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 12.3 33.8 160.1 283.4 287.3 48.5 0.0 0.0 0.0 825.5 HEATING DEG. DAYS(BASE 18 0C) 395.7 367.7 209.6 68.7 21.4 0.0 0.0 0.0 0.0 48.7 190.6 460.3 1762.6 DEWPOINT (MEAN C) -2.3 -5.8 -4.2 -1.1 -0.8 1.1 4.8 2.8 0.1 3.3 0.9 -6.6 -0.6 MIXING RATIO (G/KG) 3.91 2.99 3.54 4.36 4.48 5.16 6.49 5.77 4.78 6.04 5.10 2.94 4.63 VAPOUR PRESSURE (HPA) 5.37 4.10 4.85 5.98 6.13 7.01 8.81 7.85 6.57 8.30 6.99 4.05 6.33 SATURATION DEF. (HPA) 4.01 5.10 9.51 15.29 20.68 30.81 38.07 38.92 22.52 11.55 7.53 4.01 17.33 RELATIVE HUMIDITY (MEAN %) 59 47 37 31 26 20 20 18 24 44 50 50 36 RELATIVE HUMIDITY (MAX. %) 75 63 56 45 41 30 27 24 32 57 64 64 48 RELATIVE HUMIDITY (MIN. %) 46 36 25 22 16 14 15 13 18 32 39 38 26 RELATIVE HUMIDITY (MEAN% 03UTC) 69 60 51 42 39 29 27 23 31 54 62 60 46 RELATIVE HUMIDITY (MEAN% 09UTC) 55 42 34 27 21 18 18 16 21 36 43 46 31 RELATIVE HUMIDITY (MEAN% 15UTC) 61 46 34 28 22 15 17 16 21 44 51 49 34 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 53.4 51.6 30.6 19.2 38.5 3.0 0.0 0.0 0.0 35.7 146.8 6.2 385.0 DAYS WITH PRECIPITATION >=10 2 1 1 1 2 0 0 0 0 1 5 0 13 DAYS WITH PRECIPITATION >= 5 5 3 2 1 3 0 0 0 0 2 7 0 23 DAYS WITH PRECIPITATION >= 1 8 4 7 4 5 2 0 0 0 4 12 2 48 DAYS WITH PRECIPITATION 10 8 11 8 9 3 0 0 3 12 15 8 87 GREATEST DAILY PRECIPITATION 12.0 37.0 14.0 15.0 12.0 2.0 0.0 0.0 0.0 23.0 37.0 3.0 37.0 DAY 17 1 12 30 6 3 ** ** ** 4 26 1 DAY WITH THUNDER STORM 2 0 0 2 2 2 0 0 0 2 1 0 11 DAYS WITH SNOW OR SLEET 2 4 0 0 0 0 0 0 0 0 0 3 9 DAYS WITH DUST 0 0 0 6 3 2 0 3 0 0 0 1 15 WIND DIRECTION (PREVAILING) 180 180 225 180 225 180 180 180 180 180 45 180 180 PREVAILING WIND SPEED(KNOTS) 4.2 4.2 8.3 6.2 9.0 7.2 6.2 6.5 5.7 5.1 5.8 4.6 5.8 PREVAILING WIND PERCENT 23.2 23.6 24.5 28.7 26.6 38.7 52.3 51.6 50.0 31.0 18.7 23.4 32.2 CALMS PERCENT OF WIND 31.6 18.6 10.3 7.3 5.2 1.3 2.6 3.9 4.0 9.0 10.7 16.2 10.0 NO. OF WIND OBSERVATION 155 140 155 150 154 150 155 155 150 155 150 154 1823 VECTOR WIND DIRECTION (MEAN) 210 231 225 233 226 204 179 162 194 206 242 233 207 VECTOR WIND MAGNITUDE(KNOTS) 1.7 3.3 2.8 2.9 3.8 3.7 4.0 4.1 3.7 2.2 0.4 2.2 2.7 WIND STEADINESES (MEAN %) 50.0 62.3 48.3 42.6 52.8 53.6 70.2 73.2 71.2 44.0 8.0 45.8 48.2 WIND SPEED (MEAN KNOTS) 3.4 5.3 5.8 6.8 7.2 6.9 5.7 5.6 5.2 5.0 5.0 4.8 5.6 FASTEST WIND DIRECTION 270 270 280 270 320 140 140 150 220 270 240 270 320 FASTEST WIND SPEED (KNOTS) 33 33 37 39 45 37 21 21 23 31 41 31 45 DAY 4 3 7 27 4 1 5 30 20 2 25 5 DAYS WITH SKY CLEAR (0-2)/8 14 12 11 16 18 28 31 29 22 10 11 13 215 DAYS WITH P.CLOUDY (3-6)/8 8 13 15 10 11 2 0 2 8 18 10 12 109 DAYS WITH CLOUDY (7-8)/8 9 3 5 4 2 0 0 0 0 3 9 6 41 DAYS WITH VISIBILITY =< 2 KM 2 1 0 0 0 0 0 0 0 0 0 2 5 DURATION OF SUNSHINE HOURS 150.6 164.9 216.6 220.2 285.3 341.4 368.7 354.9 271.7 214.9 170.8 170.8 2930.8 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 860.1 857.2 857.9 859.2 858.1 853.9 852.8 854.6 862.2 863.7 860.3 861.4 858.5 MAX. QFE PRESSURE IN HPA 869.9 865.1 864.8 870.3 863.9 860.3 858.0 859.6 870.5 869.8 868.2 868.2 870.5 DAY-HOUR 10- 6 18- 6 18- 6 5- 6 21- 6 9- 6 13- 6 16- 6 23- 6 10- 6 2- 6 22- 6 MIN. QFE PRESSURE IN HPA 849.8 848.5 847.8 850.9 851.3 847.6 848.2 848.1 855.1 856.8 849.9 847.4 847.4 DAY-HOUR 16-12 1- 3 7-12 2-15 1-15 4-15 8-15 2-15 2-15 14-15 26- 3 4- 3 MEAN QNH PRESSURE IN HPA 1020.0 1016.6 1017.4 1018.9 1017.6 1012.8 1011.5 1013.7 1022.4 1024.1 1020.1 1021.4 1018.0 MAX. QNH PRESSURE IN HPA 1031.2 1025.7 1025.3 1031.6 1024.3 1020.2 1017.5 1019.4 1031.9 1031.1 1029.2 1029.2 1031.9 DAY-HOUR 10- 6 18- 6 18- 6 5- 6 21- 6 9- 6 13- 6 16- 6 23- 6 10- 6 2- 6 22- 6 MIN. QNH PRESSURE IN HPA 1008.1 1006.6 1005.8 1009.4 1009.8 1005.6 1006.3 1006.1 1014.2 1016.1 1008.2 1005.3 1005.3 DAY-HOUR 16-12 1- 3 7-12 2-15 1-15 4-15 8-15 2-15 2-15 14-15 26- 3 4- 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 860.2 857.1 858.2 859.8 858.6 854.7 853.7 855.4 862.8 864.3 860.7 861.5 858.9 MAX. QFE PRESSURE IN HPA 868.9 863.8 863.8 869.0 863.1 859.9 857.4 859.4 869.6 869.0 866.6 867.3 869.6 DAY 10 19 18 5 21 9 14 16 23 10 2 8 MIN. QFE PRESSURE IN HPA 851.9 848.5 848.8 851.8 853.0 849.7 849.6 850.6 857.3 859.4 849.9 847.4 847.4 DAY 26 1 12 2 2 22 8 2 2 15 26 4 MEAN QNH PRESSURE IN HPA 1020.1 1016.5 1017.8 1019.6 1018.2 1013.7 1012.6 1014.6 1023.1 1024.8 1020.6 1021.6 1018.6 MAX. QNH PRESSURE IN HPA 1030.0 1024.2 1024.2 1030.2 1023.4 1019.7 1016.8 1019.1 1030.8 1030.2 1027.4 1028.2 1030.8 DAY 10 19 18 5 21 9 14 16 23 10 2 8 MIN. QNH PRESSURE IN HPA 1010.5 1006.6 1007.0 1010.4 1011.8 1008.0 1007.9 1009.0 1016.7 1019.1 1008.2 1005.3 1005.3 DAY 26 1 12 2 2 22 8 2 2 15 26 4 MEAN QFF PRESSURE IN HPA 1020.9 1017.3 1014.9 1013.4 1009.8 1001.7 998.5 1000.7 1013.8 1018.9 1017.5 1023.9 1012.6 MAX. QFF PRESSURE IN HPA 1031.0 1028.3 1022.5 1029.2 1015.5 1008.2 1005.2 1005.9 1023.9 1025.2 1023.2 1035.1 1035.1 DAY 10 19 18 5 18 9 2 16 23 9 2 8 MIN. QFF PRESSURE IN HPA 1010.8 1004.5 1004.6 1004.1 1005.3 994.4 993.0 993.5 1003.7 1011.9 1007.5 1004.7 993.0 DAY 5 1 12 26 29 22 8 2 1 15 26 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 861.2 858.1 859.1 860.4 859.2 855.3 854.2 856.1 863.6 865.0 861.4 862.4 859.7 MAX. QFE PRESSURE IN HPA 869.9 865.1 864.8 870.3 863.9 860.3 858.0 859.6 870.5 869.8 868.2 868.2 870.5 DAY 10 18 18 5 21 9 13 16 23 10 2 22 MIN. QFE PRESSURE IN HPA 853.1 849.1 849.6 853.0 853.3 850.9 850.0 851.1 857.7 860.1 850.2 848.3 848.3 DAY 26 1 12 2 1 22 8 2 1 15 26 4 MEAN QNH PRESSURE IN HPA 1021.2 1017.6 1018.7 1020.3 1018.9 1014.4 1013.2 1015.3 1024.0 1025.6 1021.5 1022.6 1019.4 MAX. QNH PRESSURE IN HPA 1031.2 1025.7 1025.3 1031.6 1024.3 1020.2 1017.5 1019.4 1031.9 1031.1 1029.2 1029.2 1031.9 DAY 10 18 18 5 21 9 13 16 23 10 2 22 MIN. QNH PRESSURE IN HPA 1011.9 1007.3 1007.9 1011.8 1012.1 1009.4 1008.3 1009.6 1017.2 1019.9 1008.6 1006.4 1006.4 DAY 26 1 12 2 1 22 8 2 1 15 26 4 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 860.3 857.4 858.3 859.6 858.5 854.4 853.2 855.1 862.5 863.8 860.2 861.4 858.7 MAX. QFE PRESSURE IN HPA 868.4 864.7 863.8 869.8 863.1 859.6 856.9 858.6 869.3 869.0 867.0 866.8 869.8 DAY 10 18 18 5 21 8 13 15 23 10 2 8 MIN. QFE PRESSURE IN HPA 850.6 850.0 849.1 852.4 852.4 850.3 849.6 850.5 856.9 859.4 850.1 847.9 847.9 DAY 16 1 12 2 1 22 8 2 1 15 26 4 MEAN QNH PRESSURE IN HPA 1020.2 1016.9 1017.9 1019.4 1018.1 1013.4 1012.0 1014.2 1022.7 1024.2 1020.0 1021.4 1018.4 MAX. QNH PRESSURE IN HPA 1029.5 1025.2 1024.2 1031.1 1023.4 1019.4 1016.3 1018.2 1030.5 1030.2 1027.9 1027.6 1031.1 DAY 10 18 18 5 21 8 13 15 23 10 2 8 MIN. QNH PRESSURE IN HPA 1009.0 1008.3 1007.3 1011.1 1011.1 1008.7 1007.9 1008.9 1016.3 1019.1 1008.4 1005.9 1005.9 DAY 16 1 12 2 1 22 8 2 1 15 26 4 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 859.2 856.5 857.0 858.3 857.2 852.8 851.6 853.6 861.1 862.8 859.5 860.6 857.5 MAX. QFE PRESSURE IN HPA 867.4 863.4 862.4 868.0 861.8 857.9 855.6 857.5 868.2 867.7 865.9 866.4 868.2 DAY 9 18 18 5 21 8 13 15 23 9 2 7 MIN. QFE PRESSURE IN HPA 849.8 849.4 847.8 851.4 851.6 848.9 848.8 849.2 855.6 857.8 851.6 848.1 847.8 DAY 16 12 7 2 1 28 30 2 2 2 26 4 MEAN QNH PRESSURE IN HPA 1018.9 1015.8 1016.4 1017.9 1016.6 1011.6 1010.2 1012.5 1021.1 1023.0 1019.2 1020.5 1017.0 MAX. QNH PRESSURE IN HPA 1028.3 1023.7 1022.6 1029.0 1021.9 1017.4 1014.8 1016.9 1029.2 1028.7 1026.6 1027.2 1029.2 DAY 9 18 18 5 21 8 13 15 23 9 2 7 MIN. QNH PRESSURE IN HPA 1008.1 1007.6 1005.8 1009.9 1010.2 1007.1 1007.0 1007.4 1014.8 1017.3 1010.2 1006.1 1005.8 DAY 16 12 7 2 1 28 30 2 2 2 26 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 JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 859.7 856.9 857.1 858.1 856.9 852.3 851.1 853.0 861.0 862.8 859.6 861.1 857.5 MAX. QFE PRESSURE IN HPA 867.3 863.8 862.4 868.1 861.3 857.4 855.7 857.0 868.0 868.1 866.1 867.4 868.1 DAY 9 18 18 5 21 8 13 15 23 10 2 7 MIN. QFE PRESSURE IN HPA 851.2 849.6 848.4 850.9 851.3 847.6 848.2 848.1 855.1 856.8 852.8 848.4 847.6 DAY 25 12 12 2 1 4 8 2 2 14 25 3 MEAN QNH PRESSURE IN HPA 1019.5 1016.2 1016.5 1017.6 1016.3 1010.9 1009.6 1011.8 1021.0 1023.1 1019.4 1021.1 1016.9 MAX. QNH PRESSURE IN HPA 1028.2 1024.2 1022.6 1029.1 1021.3 1016.8 1014.9 1016.4 1029.0 1029.1 1026.8 1028.3 1029.1 DAY 9 18 18 5 21 8 13 15 23 10 2 7 MIN. QNH PRESSURE IN HPA 1009.7 1007.9 1006.5 1009.4 1009.8 1005.6 1006.3 1006.1 1014.2 1016.1 1011.5 1006.5 1005.6 DAY 25 12 12 2 1 4 8 2 2 14 25 3 MEAN QFF PRESSURE IN HPA 1020.3 1017.2 1013.6 1011.4 1007.8 999.0 995.4 997.9 1011.9 1017.2 1016.3 1023.5 1011.0 MAX. QFF PRESSURE IN HPA 1029.6 1027.4 1020.7 1029.5 1014.1 1005.4 1002.1 1002.6 1021.7 1024.1 1022.6 1035.5 1035.5 DAY 10 18 3 5 18 8 13 15 23 10 2 7 MIN. QFF PRESSURE IN HPA 1011.0 1009.0 1001.6 1003.3 1001.9 994.6 990.8 990.7 1001.8 1009.3 1008.6 1004.5 990.7 DAY 5 12 7 26 13 22 30 2 1 2 25 3 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 JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.8 7.5 11.6 16.6 21.1 26.8 32.8 32.5 25.7 18.1 13.7 4.0 18.1 MINIMUN AIR TEMPERATURE (C) 2.6 3.5 6.7 11.2 15.2 20.1 26.2 26.0 19.6 12.9 8.4 0.4 12.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 12 31 30 13 0 0 0 86 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 4 3 0 0 0 0 0 0 0 0 1 12 20 TEMPERATURE RECORDS LOWEST(C) -1.0 -1.0 1.7 5.5 9.2 14.0 21.7 19.5 12.5 7.0 -1.8 -2.5 -2.5 DAY 21 25 27 7 9 1 1 31 22 19 26 20 MAXIMUM AIR TEMPERATURE (C) 9.9 10.5 15.1 19.9 24.6 30.3 36.3 35.6 29.0 21.2 17.1 6.7 21.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 19 31 31 16 0 0 0 97 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 15.0 15.2 20.6 25.0 29.6 34.4 41.0 38.5 32.7 29.5 22.6 12.0 41.0 DAY 31 4 24 3 22 29 16 5 11 4 2 1 DIF. BETWEEN (MAX.-MIN.) (C) 7.3 7.0 8.4 8.7 9.4 10.2 10.1 9.6 9.4 8.3 8.7 6.3 8.7 MEAN DAILY TEMP. (MDT) (C) 6.2 7.0 10.9 15.6 19.9 25.2 31.3 30.8 24.3 17.0 12.8 3.6 17.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 18.0 127.8 317.8 304.1 110.5 5.5 0.0 0.0 883.9 HEATING DEG. DAYS(BASE 18 0C) 364.6 308.1 220.1 77.0 12.7 0.0 0.0 0.0 0.8 62.7 157.5 447.6 1650.9 DEWPOINT (MEAN C) -5.0 -4.6 -6.4 0.1 1.9 3.1 4.4 2.0 0.0 -1.0 -7.2 -5.2 -1.5 MIXING RATIO (G/KG) 3.19 3.29 3.09 4.84 5.41 5.82 6.44 5.39 4.64 4.26 2.85 3.12 4.36 VAPOUR PRESSURE (HPA) 4.40 4.51 4.24 6.62 7.41 7.92 8.73 7.35 6.35 5.87 3.92 4.31 5.97 SATURATION DEF. (HPA) 5.65 6.10 9.76 12.67 18.27 27.86 41.78 42.23 27.53 15.58 12.49 3.96 18.66 RELATIVE HUMIDITY (MEAN %) 45 45 32 37 32 24 18 16 21 30 25 55 32 RELATIVE HUMIDITY (MAX. %) 61 61 46 52 44 34 24 23 33 42 35 66 43 RELATIVE HUMIDITY (MIN. %) 34 35 23 26 22 15 13 11 15 24 18 46 24 RELATIVE HUMIDITY (MEAN% 03UTC) 59 58 44 49 41 33 24 23 33 41 33 63 42 RELATIVE HUMIDITY (MEAN% 09UTC) 39 42 30 33 28 23 19 15 18 27 22 53 29 RELATIVE HUMIDITY (MEAN% 15UTC) 44 43 29 34 28 17 14 13 18 28 25 55 29 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 6.5 19.6 31.2 44.2 16.4 2.4 0.0 0.0 0.8 4.2 0.0 23.7 149.0 DAYS WITH PRECIPITATION >=10 0 1 1 1 0 0 0 0 0 0 0 0 3 DAYS WITH PRECIPITATION >= 5 0 1 2 1 0 0 0 0 0 0 0 3 7 DAYS WITH PRECIPITATION >= 1 2 4 6 5 6 1 0 0 0 1 0 6 31 DAYS WITH PRECIPITATION 5 9 7 10 12 4 0 0 3 2 0 6 58 GREATEST DAILY PRECIPITATION 4.1 11.0 16.0 31.0 4.2 2.0 0.0 0.0 0.8 3.3 0.0 6.0 31.0 DAY 17 24 17 24 26 1 ** ** 22 25 ** 13 DAY WITH THUNDER STORM 0 0 1 0 0 1 0 0 0 1 0 0 3 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 4 4 DAYS WITH DUST 0 0 0 1 0 0 0 0 0 0 1 0 2 WIND DIRECTION (PREVAILING) 180 180 180 180 180 180 180 180 180 180 180 225 180 PREVAILING WIND SPEED(KNOTS) 4.8 5.5 6.3 7.4 8.1 7.5 6.3 6.0 6.4 6.6 5.4 5.3 6.3 PREVAILING WIND PERCENT 23.2 30.7 26.5 24.7 25.2 36.9 51.3 53.5 38.7 50.3 30.0 24.5 34.2 CALMS PERCENT OF WIND 24.5 17.9 14.2 8.7 20.0 12.1 14.1 9.7 14.7 10.3 13.3 17.4 14.7 NO. OF WIND OBSERVATION 155 140 155 150 155 149 156 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 231 199 220 219 194 204 186 172 193 188 208 212 201 VECTOR WIND MAGNITUDE(KNOTS) 2.6 2.5 2.8 3.7 2.7 4.2 3.8 3.8 3.4 3.4 2.9 1.8 3.0 WIND STEADINESES (MEAN %) 59.1 59.5 43.7 50.0 42.2 61.8 73.1 76.0 63.0 63.0 54.7 50.0 54.5 WIND SPEED (MEAN KNOTS) 4.4 4.2 6.4 7.4 6.4 6.8 5.2 5.0 5.4 5.4 5.3 3.6 5.5 FASTEST WIND DIRECTION 250 320 290 160 290 230 210 210 290 190 270 220 290 FASTEST WIND SPEED (KNOTS) 35 31 39 35 45 37 17 16 33 25 39 21 45 DAY 17 8 17 23 8 7 1 2 21 11 25 2 DAYS WITH SKY CLEAR (0-2)/8 24 12 19 7 13 24 27 29 26 22 19 15 237 DAYS WITH P.CLOUDY (3-6)/8 2 10 6 15 13 6 4 2 4 8 11 10 91 DAYS WITH CLOUDY (7-8)/8 5 6 6 8 5 0 0 0 0 1 0 6 37 DAYS WITH VISIBILITY =< 2 KM 3 1 0 1 0 0 0 0 1 0 0 4 10 DURATION OF SUNSHINE HOURS 218.9 186.4 247.4 228.7 254.8 347.8 356.5 364.1 318.0 280.4 247.5 155.9 3206.4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 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 861.4 858.9 858.3 857.3 859.5 855.2 852.2 855.7 858.0 862.0 860.9 862.4 858.5 MAX. QFE PRESSURE IN HPA 870.1 865.6 867.9 863.7 865.9 861.2 857.2 861.5 865.5 871.0 868.5 867.7 871.0 DAY-HOUR 7- 6 12- 6 3- 6 11- 6 26- 6 1- 6 4- 6 25- 6 13- 6 27- 6 16- 6 11- 6 MIN. QFE PRESSURE IN HPA 854.4 847.9 848.5 850.9 854.5 847.8 846.3 851.6 850.9 853.3 851.8 856.8 846.3 DAY-HOUR 11-12 5-15 26-12 16-15 7-12 22-15 16-15 22-15 19-15 12-15 25-15 17-15 MEAN QNH PRESSURE IN HPA 1021.4 1018.6 1017.8 1016.7 1019.2 1014.3 1010.9 1014.9 1017.5 1022.1 1020.8 1022.5 1018.1 MAX. QNH PRESSURE IN HPA 1031.4 1026.2 1028.9 1024.1 1026.6 1021.2 1016.6 1021.5 1026.1 1032.4 1029.6 1028.7 1032.4 DAY-HOUR 7- 6 12- 6 3- 6 11- 6 26- 6 1- 6 4- 6 25- 6 13- 6 27- 6 16- 6 11- 6 MIN. QNH PRESSURE IN HPA 1013.4 1005.9 1006.6 1009.4 1013.5 1005.8 1004.1 1010.2 1009.4 1012.1 1010.4 1016.1 1004.1 DAY-HOUR 11-12 5-15 26-12 16-15 7-12 22-15 16-15 22-15 19-15 12-15 25-15 17-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 861.7 859.5 858.6 857.9 860.1 855.7 852.6 856.2 858.7 862.7 861.5 862.7 859.0 MAX. QFE PRESSURE IN HPA 868.9 864.4 866.6 863.1 864.4 860.5 855.7 860.1 864.4 870.2 867.8 867.3 870.2 DAY 7 12 3 11 26 1 4 25 13 27 16 11 MIN. QFE PRESSURE IN HPA 856.1 851.3 849.4 853.0 856.7 849.1 847.5 852.1 853.7 856.9 854.1 858.4 847.5 DAY 12 5 26 25 7 22 16 23 20 12 26 4 MEAN QNH PRESSURE IN HPA 1021.7 1019.2 1018.2 1017.4 1019.9 1014.8 1011.3 1015.5 1018.3 1022.9 1021.5 1022.9 1018.7 MAX. QNH PRESSURE IN HPA 1030.0 1024.9 1027.4 1023.4 1024.9 1020.4 1014.9 1019.9 1024.9 1031.5 1028.8 1028.2 1031.5 DAY 7 12 3 11 26 1 4 25 13 27 16 11 MIN. QNH PRESSURE IN HPA 1015.3 1009.8 1007.6 1011.8 1016.0 1007.3 1005.5 1010.7 1012.6 1016.3 1013.0 1018.0 1005.5 DAY 12 5 26 25 7 22 16 23 20 12 26 4 MEAN QFF PRESSURE IN HPA 1022.1 1018.9 1015.7 1011.7 1011.7 1003.3 996.3 1000.9 1007.6 1016.8 1018.0 1025.2 1012.3 MAX. QFF PRESSURE IN HPA 1030.8 1024.5 1026.5 1019.4 1016.5 1013.4 1001.0 1006.0 1017.3 1027.6 1028.0 1031.5 1031.5 DAY 7 13 3 7 26 1 4 25 22 27 28 11 MIN. QFF PRESSURE IN HPA 1014.2 1007.0 1002.7 1006.0 1007.1 993.0 988.5 995.6 1001.4 1007.6 1010.7 1017.8 988.5 DAY 12 5 26 19 6 22 16 8 20 5 11 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 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 862.7 860.2 859.6 858.6 860.7 856.5 853.5 857.2 859.5 863.4 862.3 863.7 859.8 MAX. QFE PRESSURE IN HPA 870.1 865.6 867.9 863.7 865.9 861.2 857.2 861.5 865.5 871.0 868.5 867.7 871.0 DAY 7 12 3 11 26 1 4 25 13 27 16 11 MIN. QFE PRESSURE IN HPA 857.1 851.7 849.8 854.0 857.3 849.8 848.8 853.4 854.4 857.3 854.7 860.0 848.8 DAY 12 5 26 25 7 22 16 23 20 12 26 4 MEAN QNH PRESSURE IN HPA 1022.9 1020.1 1019.3 1018.2 1020.7 1015.8 1012.3 1016.6 1019.2 1023.8 1022.4 1024.0 1019.6 MAX. QNH PRESSURE IN HPA 1031.4 1026.2 1028.9 1024.1 1026.6 1021.2 1016.6 1021.5 1026.1 1032.4 1029.6 1028.7 1032.4 DAY 7 12 3 11 26 1 4 25 13 27 16 11 MIN. QNH PRESSURE IN HPA 1016.5 1010.3 1008.1 1012.9 1016.7 1008.1 1007.0 1012.2 1013.4 1016.7 1013.7 1019.8 1007.0 DAY 12 5 26 25 7 22 16 23 20 12 26 4 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 861.5 859.2 858.7 857.8 859.8 855.7 852.9 856.4 858.4 862.3 861.0 862.5 858.9 MAX. QFE PRESSURE IN HPA 869.1 864.3 867.0 862.7 865.9 860.6 856.4 860.4 864.2 870.4 867.3 866.5 870.4 DAY 7 12 3 11 26 1 4 25 13 25 16 10 MIN. QFE PRESSURE IN HPA 856.1 851.4 849.1 853.2 856.0 849.6 848.4 853.1 853.5 856.3 853.6 858.6 848.4 DAY 11 5 26 25 7 22 16 8 20 12 26 4 MEAN QNH PRESSURE IN HPA 1021.5 1018.9 1018.4 1017.3 1019.6 1014.9 1011.7 1015.7 1018.0 1022.4 1021.0 1022.6 1018.5 MAX. QNH PRESSURE IN HPA 1030.3 1024.8 1027.9 1022.9 1026.6 1020.5 1015.7 1020.3 1024.6 1031.8 1028.2 1027.3 1031.8 DAY 7 12 3 11 26 1 4 25 13 25 16 10 MIN. QNH PRESSURE IN HPA 1015.3 1009.9 1007.3 1012.0 1015.2 1007.9 1006.5 1011.9 1012.4 1015.6 1012.5 1018.2 1006.5 DAY 11 5 26 25 7 22 16 8 20 12 26 4 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 860.4 857.8 857.3 856.3 858.5 854.4 851.4 854.7 856.9 860.9 859.7 861.4 857.5 MAX. QFE PRESSURE IN HPA 868.2 863.2 865.2 861.4 864.9 859.5 854.8 858.2 862.3 869.6 865.8 865.7 869.6 DAY 7 1 3 11 26 1 4 25 13 25 15 10 MIN. QFE PRESSURE IN HPA 854.4 848.5 848.5 851.7 854.5 848.4 846.9 851.8 851.7 854.6 852.0 857.6 846.9 DAY 11 5 26 16 7 22 16 8 19 12 26 17 MEAN QNH PRESSURE IN HPA 1020.2 1017.3 1016.7 1015.5 1018.1 1013.3 1010.0 1013.8 1016.2 1020.9 1019.4 1021.4 1016.9 MAX. QNH PRESSURE IN HPA 1029.2 1023.5 1025.8 1021.4 1025.4 1019.2 1013.8 1017.8 1022.5 1030.8 1026.5 1026.4 1030.8 DAY 7 1 3 11 26 1 4 25 13 25 15 10 MIN. QNH PRESSURE IN HPA 1013.4 1006.6 1006.6 1010.3 1013.5 1006.5 1004.8 1010.4 1010.3 1013.6 1010.6 1017.1 1004.8 DAY 11 5 26 16 7 22 16 8 19 12 26 17 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 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 860.7 857.8 857.1 856.0 858.3 853.7 850.8 854.2 856.5 860.7 860.0 861.7 857.3 MAX. QFE PRESSURE IN HPA 868.5 863.6 864.8 860.7 863.9 858.8 854.6 857.2 861.9 869.6 866.7 865.8 869.6 DAY 7 1 3 12 26 1 4 25 13 25 15 9 MIN. QFE PRESSURE IN HPA 855.8 847.9 848.5 850.9 854.6 847.8 846.3 851.6 850.9 853.3 851.8 856.8 846.3 DAY 1 5 26 16 7 22 16 22 19 12 25 17 MEAN QNH PRESSURE IN HPA 1020.6 1017.3 1016.5 1015.2 1017.9 1012.6 1009.3 1013.2 1015.8 1020.6 1019.8 1021.7 1016.7 MAX. QNH PRESSURE IN HPA 1029.6 1024.0 1025.3 1020.6 1024.3 1018.4 1013.6 1016.6 1022.0 1030.8 1027.5 1026.5 1030.8 DAY 7 1 3 12 26 1 4 25 13 25 15 9 MIN. QNH PRESSURE IN HPA 1015.0 1005.9 1006.6 1009.4 1013.6 1005.8 1004.1 1010.2 1009.4 1012.1 1010.4 1016.1 1004.1 DAY 1 5 26 16 7 22 16 22 19 12 25 17 MEAN QFF PRESSURE IN HPA 1020.9 1017.0 1013.8 1009.5 1009.6 1001.0 994.3 998.7 1005.3 1014.4 1016.4 1023.9 1010.4 MAX. QFF PRESSURE IN HPA 1030.7 1023.9 1024.1 1016.3 1017.2 1009.7 999.8 1002.6 1013.5 1027.1 1027.4 1029.6 1030.7 DAY 7 13 3 7 26 1 4 20 22 25 27 10 MIN. QFF PRESSURE IN HPA 1014.7 1003.8 1002.3 1003.2 1004.9 991.8 986.9 994.8 998.3 1004.2 1007.8 1019.0 986.9 DAY 11 5 25 16 7 22 16 8 19 12 25 17 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 JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.0 6.3 6.6 14.8 22.7 28.2 29.8 30.4 27.9 18.5 11.4 8.4 17.3 MINIMUN AIR TEMPERATURE (C) -0.8 2.5 3.1 9.8 16.5 21.8 23.9 24.3 21.8 12.8 6.7 4.4 12.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 2 20 29 29 21 0 0 0 101 DAYS WITH MINIMUM TEMP. <=-4 8 0 0 0 0 0 0 0 0 0 0 0 8 DAYS WITH FREEZING MIN.<= 0 19 6 5 0 0 0 0 0 0 0 0 0 30 TEMPERATURE RECORDS LOWEST(C) -6.6 -3.0 -1.4 3.5 12.0 16.4 19.0 20.0 16.6 7.0 0.8 0.6 -6.6 DAY 19 6 1 5 8 28 15 30 24 17 13 3 MAXIMUM AIR TEMPERATURE (C) 4.5 9.2 9.4 18.0 26.0 31.6 33.2 33.6 31.2 21.9 14.1 11.2 20.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 4 24 31 29 23 0 0 0 111 DAYS WITH MAXIMUM TEMP. <= 0 5 0 0 0 0 0 0 0 0 0 0 0 5 TEMPERATURE RECORDS HIGHEST(C) 10.5 16.0 21.7 23.0 32.5 36.0 35.7 36.2 35.2 25.8 19.5 16.0 36.2 DAY 3 10 31 22 31 4 3 11 17 1 6 28 DIF. BETWEEN (MAX.-MIN.) (C) 5.3 6.7 6.3 8.2 9.5 9.8 9.3 9.3 9.4 9.1 7.4 6.8 8.1 MEAN DAILY TEMP. (MDT) (C) 1.8 5.9 6.2 13.9 21.2 26.7 28.6 28.9 26.5 17.4 10.4 7.8 16.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 45.2 171.0 234.8 246.3 165.1 1.2 0.0 0.0 863.6 HEATING DEG. DAYS(BASE 18 0C) 501.5 352.1 365.3 125.0 1.6 0.0 0.0 0.0 0.0 45.6 226.9 317.0 1935.1 DEWPOINT (MEAN C) -4.8 -1.7 -1.6 -0.0 3.9 1.9 4.4 2.1 -0.2 -0.5 -4.4 -4.9 -0.5 MIXING RATIO (G/KG) 3.23 4.06 4.08 4.68 6.17 5.56 6.24 5.52 4.70 4.45 3.32 3.27 4.61 VAPOUR PRESSURE (HPA) 4.45 5.56 5.58 6.41 8.43 7.58 8.51 7.53 6.42 6.12 4.59 4.50 6.31 SATURATION DEF. (HPA) 2.86 4.33 4.52 11.04 19.97 31.31 33.93 36.60 32.03 15.72 9.26 6.66 17.35 RELATIVE HUMIDITY (MEAN %) 63 61 61 40 33 21 21 18 18 30 35 42 37 RELATIVE HUMIDITY (MAX. %) 75 75 75 56 46 31 28 27 25 44 51 56 49 RELATIVE HUMIDITY (MIN. %) 50 49 49 29 24 15 16 13 13 23 25 31 28 RELATIVE HUMIDITY (MEAN% 03UTC) 68 71 70 52 44 30 27 27 24 43 48 53 46 RELATIVE HUMIDITY (MEAN% 09UTC) 62 59 59 37 31 19 19 17 17 27 30 40 35 RELATIVE HUMIDITY (MEAN% 15UTC) 64 58 62 37 30 17 18 16 17 29 34 40 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 76.6 91.5 182.5 68.5 38.4 15.4 0.4 0.0 0.0 22.4 0.3 15.1 511.1 DAYS WITH PRECIPITATION >=10 2 5 5 2 2 1 0 0 0 2 0 0 19 DAYS WITH PRECIPITATION >= 5 9 5 10 4 3 1 0 0 0 2 0 2 36 DAYS WITH PRECIPITATION >= 1 12 10 13 7 6 2 0 0 0 2 0 2 54 DAYS WITH PRECIPITATION 13 15 19 11 12 3 1 0 0 3 2 4 83 GREATEST DAILY PRECIPITATION 11.0 30.0 60.0 30.0 13.0 14.0 0.4 0.0 0.0 11.0 0.3 9.1 60.0 DAY 19 2 2 3 8 28 12 ** ** 16 9 22 DAY WITH THUNDER STORM 0 0 1 1 1 0 0 0 0 1 0 0 4 DAYS WITH SNOW OR SLEET 7 3 7 0 0 0 0 0 0 0 0 0 17 DAYS WITH DUST 1 2 2 1 0 0 1 0 1 0 0 0 8 WIND DIRECTION (PREVAILING) 180 180 180 225 225 180 180 180 180 180 180 180 180 PREVAILING WIND SPEED(KNOTS) 4.9 5.3 5.4 8.0 8.1 8.0 7.6 6.4 6.9 5.7 5.4 4.3 6.2 PREVAILING WIND PERCENT 23.9 27.6 22.6 28.0 22.6 37.3 38.1 43.2 32.7 34.8 42.0 26.5 30.7 CALMS PERCENT OF WIND 23.9 19.3 14.2 4.0 8.4 6.0 6.5 9.7 7.3 22.6 26.0 21.3 14.1 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 202 202 229 236 232 202 198 185 213 202 190 226 208 VECTOR WIND MAGNITUDE(KNOTS) 1.2 2.4 1.2 3.4 2.9 4.1 4.0 3.9 3.5 3.2 2.6 1.5 2.7 WIND STEADINESES (MEAN %) 30.0 52.2 20.7 45.9 42.6 57.7 58.0 70.9 54.7 62.7 59.1 34.9 47.4 WIND SPEED (MEAN KNOTS) 4.0 4.6 5.8 7.4 6.8 7.1 6.9 5.5 6.4 5.1 4.4 4.3 5.7 FASTEST WIND DIRECTION 260 260 190 300 280 270 360 360 300 250 270 320 360 FASTEST WIND SPEED (KNOTS) 25 23 31 41 41 35 43 27 27 39 27 27 43 DAY 6 28 31 21 28 14 18 25 8 11 3 17 DAYS WITH SKY CLEAR (0-2)/8 11 7 8 8 14 23 23 25 29 22 17 8 195 DAYS WITH P.CLOUDY (3-6)/8 9 13 8 14 14 7 8 6 1 8 13 20 121 DAYS WITH CLOUDY (7-8)/8 11 9 15 8 3 0 0 0 0 1 0 3 50 DAYS WITH VISIBILITY =< 2 KM 4 4 5 0 0 0 0 0 1 0 0 0 14 DURATION OF SUNSHINE HOURS 121.1 132.8 139.7 202.9 286.0 345.5 332.1 354.7 311.3 273.9 219.5 172.6 2892.1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 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 861.2 857.6 856.4 858.3 858.8 855.9 857.3 857.3 857.0 861.7 864.7 862.7 859.1 MAX. QFE PRESSURE IN HPA 869.4 864.4 861.4 865.1 863.2 860.3 863.6 865.1 866.2 871.0 874.6 869.9 874.6 DAY-HOUR 10- 6 13- 6 6- 6 5- 6 7- 6 27- 6 4- 6 30- 6 25- 6 2- 6 18- 6 2- 6 MIN. QFE PRESSURE IN HPA 852.9 847.6 850.0 851.4 853.3 850.6 850.1 851.3 850.5 851.7 858.3 856.4 847.6 DAY-HOUR 6-12 5-12 13-12 10-12 28-15 5-15 7-15 8-15 20-15 27-15 28-12 25-12 MEAN QNH PRESSURE IN HPA 1021.2 1017.1 1015.7 1017.9 1018.4 1015.1 1016.7 1016.7 1016.4 1021.7 1025.2 1022.9 1018.7 MAX. QNH PRESSURE IN HPA 1030.6 1024.9 1021.4 1025.7 1023.5 1020.2 1024.0 1025.7 1026.9 1032.4 1036.6 1031.2 1036.6 DAY-HOUR 10- 6 13- 6 6- 6 5- 6 7- 6 27- 6 4- 6 30- 6 25- 6 2- 6 18- 6 2- 6 MIN. QNH PRESSURE IN HPA 1011.7 1005.6 1008.3 1009.9 1012.1 1009.0 1008.4 1009.8 1008.9 1010.3 1017.9 1015.7 1005.6 DAY-HOUR 6-12 5-12 13-12 10-12 28-15 5-15 7-15 8-15 20-15 27-15 28-12 25-12 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 861.7 858.0 856.8 858.8 859.3 856.5 858.2 858.2 857.7 862.4 865.2 863.2 859.7 MAX. QFE PRESSURE IN HPA 868.2 863.3 860.5 864.6 862.6 859.9 862.5 864.2 864.2 870.2 873.8 869.5 873.8 DAY 10 13 22 5 7 27 4 30 25 2 19 8 MIN. QFE PRESSURE IN HPA 855.8 850.0 851.6 852.6 855.7 851.8 851.6 853.7 852.2 854.9 859.0 857.7 850.0 DAY 18 5 13 10 29 6 7 8 22 27 29 25 MEAN QNH PRESSURE IN HPA 1021.7 1017.6 1016.1 1018.4 1019.0 1015.7 1017.7 1017.7 1017.2 1022.6 1025.8 1023.5 1019.4 MAX. QNH PRESSURE IN HPA 1029.2 1023.6 1020.4 1025.1 1022.8 1019.7 1022.7 1024.6 1024.6 1031.5 1035.7 1030.7 1035.7 DAY 10 13 22 5 7 27 4 30 25 2 19 8 MIN. QNH PRESSURE IN HPA 1015.0 1008.3 1010.2 1011.3 1014.9 1010.4 1010.2 1012.6 1010.9 1014.0 1018.7 1017.2 1008.3 DAY 18 5 13 10 29 6 7 8 22 27 29 25 MEAN QFF PRESSURE IN HPA 1024.9 1017.7 1016.4 1013.7 1009.8 1003.4 1004.5 1004.4 1005.3 1016.1 1023.6 1022.9 1013.5 MAX. QFF PRESSURE IN HPA 1032.2 1025.1 1021.5 1025.3 1015.0 1009.0 1008.7 1012.9 1015.2 1025.8 1036.0 1031.7 1036.0 DAY 10 14 21 5 7 27 4 30 25 19 19 8 MIN. QFF PRESSURE IN HPA 1017.0 1009.0 1008.0 1004.3 1002.6 997.5 996.3 998.7 999.8 1006.1 1015.6 1016.5 996.3 DAY 6 10 26 13 29 5 7 8 19 27 3 25 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 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 862.6 858.9 857.6 859.5 859.9 857.3 858.8 858.7 858.5 863.1 866.0 864.0 860.4 MAX. QFE PRESSURE IN HPA 869.4 864.4 861.4 865.1 863.2 860.3 863.6 865.1 866.2 871.0 874.6 869.9 874.6 DAY 10 13 6 5 7 27 4 30 25 2 18 2 MIN. QFE PRESSURE IN HPA 857.1 849.0 851.9 853.2 856.2 852.7 852.8 853.9 852.5 855.1 859.6 858.2 849.0 DAY 19 5 13 10 29 6 7 8 22 27 29 25 MEAN QNH PRESSURE IN HPA 1022.7 1018.6 1017.1 1019.2 1019.7 1016.7 1018.4 1018.4 1018.0 1023.3 1026.7 1024.4 1020.3 MAX. QNH PRESSURE IN HPA 1030.6 1024.9 1021.4 1025.7 1023.5 1020.2 1024.0 1025.7 1026.9 1032.4 1036.6 1031.2 1036.6 DAY 10 13 6 5 7 27 4 30 25 2 18 2 MIN. QNH PRESSURE IN HPA 1016.5 1007.2 1010.5 1012.0 1015.5 1011.4 1011.5 1012.8 1011.2 1014.2 1019.4 1017.8 1007.2 DAY 19 5 13 10 29 6 7 8 22 27 29 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 861.4 858.0 856.7 858.5 859.2 856.4 857.7 857.7 857.4 861.8 864.6 862.7 859.3 MAX. QFE PRESSURE IN HPA 868.0 863.2 860.1 864.5 863.1 859.7 862.6 863.8 864.6 869.6 873.2 868.6 873.2 DAY 10 13 22 5 7 27 3 29 25 2 18 8 MIN. QFE PRESSURE IN HPA 856.1 847.9 851.5 852.6 855.3 852.0 851.5 852.8 851.8 853.4 858.8 857.2 847.9 DAY 19 5 13 10 29 6 7 8 22 27 29 25 MEAN QNH PRESSURE IN HPA 1021.4 1017.5 1016.0 1018.1 1018.9 1015.7 1017.2 1017.2 1016.8 1021.9 1025.1 1022.9 1019.0 MAX. QNH PRESSURE IN HPA 1029.0 1023.5 1019.9 1025.0 1023.4 1019.5 1022.8 1024.2 1025.1 1030.8 1035.0 1029.7 1035.0 DAY 10 13 22 5 7 27 3 29 25 2 18 8 MIN. QNH PRESSURE IN HPA 1015.3 1005.9 1010.1 1011.3 1014.4 1010.6 1010.1 1011.5 1010.4 1012.2 1018.4 1016.6 1005.9 DAY 19 5 13 10 29 6 7 8 22 27 29 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 860.2 856.7 855.5 857.4 858.0 854.9 856.2 856.2 856.1 860.5 863.6 861.6 858.1 MAX. QFE PRESSURE IN HPA 867.5 862.3 859.0 863.0 861.6 858.4 861.2 862.3 863.0 867.9 872.3 868.0 872.3 DAY 10 13 28 5 7 27 3 29 25 2 18 7 MIN. QFE PRESSURE IN HPA 852.9 847.6 850.0 851.4 853.8 851.0 850.2 851.4 850.6 852.0 858.3 856.4 847.6 DAY 6 5 13 10 29 19 7 8 21 27 28 25 MEAN QNH PRESSURE IN HPA 1020.0 1016.0 1014.6 1016.8 1017.5 1014.0 1015.4 1015.4 1015.3 1020.4 1023.9 1021.7 1017.6 MAX. QNH PRESSURE IN HPA 1028.4 1022.5 1018.7 1023.3 1021.7 1018.0 1021.2 1022.5 1023.3 1028.9 1033.9 1029.0 1033.9 DAY 10 13 28 5 7 27 3 29 25 2 18 7 MIN. QNH PRESSURE IN HPA 1011.7 1005.6 1008.3 1009.9 1012.7 1009.5 1008.6 1009.9 1009.0 1010.6 1017.9 1015.7 1005.6 DAY 6 5 13 10 29 19 7 8 21 27 28 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 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 860.2 856.7 855.5 857.3 857.7 854.5 855.9 855.7 855.6 860.6 864.0 862.0 858.0 MAX. QFE PRESSURE IN HPA 867.8 862.3 860.3 862.3 861.2 858.3 861.2 862.0 863.0 867.8 872.8 868.7 872.8 DAY 10 23 28 5 7 27 3 29 25 2 18 7 MIN. QFE PRESSURE IN HPA 853.9 847.6 850.9 851.6 853.3 850.6 850.1 851.3 850.5 851.7 858.3 856.4 847.6 DAY 6 5 13 10 28 5 7 8 20 27 28 25 MEAN QNH PRESSURE IN HPA 1020.1 1016.0 1014.7 1016.8 1017.2 1013.5 1015.1 1014.8 1014.8 1020.5 1024.4 1022.1 1017.5 MAX. QNH PRESSURE IN HPA 1028.8 1022.5 1020.2 1022.5 1021.2 1017.9 1021.2 1022.1 1023.3 1028.8 1034.5 1029.8 1034.5 DAY 10 23 28 5 7 27 3 29 25 2 18 7 MIN. QNH PRESSURE IN HPA 1012.8 1005.6 1009.4 1010.2 1012.1 1009.0 1008.4 1009.8 1008.9 1010.3 1017.9 1015.7 1005.6 DAY 6 5 13 10 28 5 7 8 20 27 28 25 MEAN QFF PRESSURE IN HPA 1023.2 1016.1 1014.7 1012.0 1007.9 1001.1 1001.9 1001.5 1002.9 1014.1 1022.3 1021.4 1011.6 MAX. QFF PRESSURE IN HPA 1033.0 1023.8 1020.2 1023.1 1013.3 1007.5 1006.6 1010.4 1013.3 1024.5 1034.8 1030.8 1034.8 DAY 10 13 28 5 11 27 3 30 25 19 18 3 MIN. QFF PRESSURE IN HPA 1013.3 1006.4 1008.5 1004.2 1000.4 995.1 994.2 995.7 996.7 1001.5 1013.4 1015.0 994.2 DAY 6 10 13 13 28 5 7 8 8 27 3 25 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.6 5.7 7.9 16.0 22.3 28.3 32.4 32.2 25.9 21.0 10.6 6.0 17.9 MINIMUN AIR TEMPERATURE (C) 2.4 0.7 3.3 10.7 16.4 22.0 26.4 26.1 20.2 15.7 7.3 2.7 12.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 2 22 31 31 9 1 0 0 96 DAYS WITH MINIMUM TEMP. <=-4 1 4 1 0 0 0 0 0 0 0 0 0 6 DAYS WITH FREEZING MIN.<= 0 7 14 6 0 0 0 0 0 0 0 0 3 30 TEMPERATURE RECORDS LOWEST(C) -7.4 -6.4 -4.4 0.5 9.5 17.2 21.0 22.0 13.6 10.0 2.6 -1.0 -7.4 DAY 29 7 8 12 6 2 7 29 15 25 27 28 MAXIMUM AIR TEMPERATURE (C) 9.2 8.9 11.0 19.5 25.6 31.7 35.7 35.6 29.3 24.3 13.1 8.5 21.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 6 25 31 31 11 0 0 0 104 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 14.4 14.4 17.0 28.0 33.0 35.0 38.8 38.8 35.0 28.8 16.4 13.0 38.8 DAY 7 18 22 26 28 27 14 15 1 4 5 8 DIF. BETWEEN (MAX.-MIN.) (C) 6.8 8.2 7.7 8.8 9.2 9.7 9.3 9.5 9.1 8.6 5.8 5.8 8.2 MEAN DAILY TEMP. (MDT) (C) 5.8 4.8 7.1 15.1 21.0 26.8 31.1 30.8 24.8 20.0 10.2 5.6 16.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 5.4 41.5 174.4 312.0 303.9 115.3 16.7 0.0 0.0 969.5 HEATING DEG. DAYS(BASE 18 0C) 377.4 369.8 336.4 108.4 7.3 0.0 0.0 0.0 0.0 12.5 233.7 384.0 1829.6 DEWPOINT (MEAN C) -6.7 -11.2 -5.9 -3.5 -0.7 3.7 6.8 1.8 -1.2 -0.5 1.4 -0.6 -1.4 MIXING RATIO (G/KG) 2.82 2.05 3.16 3.77 4.40 5.98 7.49 5.35 4.33 4.43 5.05 4.36 4.43 VAPOUR PRESSURE (HPA) 3.87 2.82 4.31 5.15 6.03 8.14 10.15 7.30 5.94 6.09 6.94 5.98 6.06 SATURATION DEF. (HPA) 6.10 6.72 6.71 14.01 21.68 30.97 39.30 41.51 28.12 19.29 6.02 3.50 18.66 RELATIVE HUMIDITY (MEAN %) 41 31 42 29 23 22 22 16 19 26 56 65 33 RELATIVE HUMIDITY (MAX. %) 53 44 59 40 32 32 29 21 28 36 68 79 43 RELATIVE HUMIDITY (MIN. %) 31 21 31 21 16 15 16 11 13 19 46 53 24 RELATIVE HUMIDITY (MEAN% 03UTC) 51 41 56 37 30 31 28 20 28 36 65 75 42 RELATIVE HUMIDITY (MEAN% 09UTC) 38 28 38 29 22 21 22 15 17 21 49 59 30 RELATIVE HUMIDITY (MEAN% 15UTC) 39 27 38 26 21 17 17 14 17 26 59 69 31 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 7.0 5.0 55.4 12.6 0.3 11.3 0.6 0.0 0.0 1.0 35.3 56.7 185.2 DAYS WITH PRECIPITATION >=10 0 0 4 0 0 0 0 0 0 0 1 3 8 DAYS WITH PRECIPITATION >= 5 1 0 6 2 0 1 0 0 0 0 3 4 17 DAYS WITH PRECIPITATION >= 1 2 2 7 2 0 3 0 0 0 0 6 6 28 DAYS WITH PRECIPITATION 2 3 13 5 3 6 1 0 0 5 11 11 60 GREATEST DAILY PRECIPITATION 6.0 3.0 10.0 6.0 0.3 8.0 0.6 0.0 0.0 0.4 18.0 25.0 25.0 DAY 16 19 4 6 5 24 6 ** ** 7 2 10 DAY WITH THUNDER STORM 0 0 0 1 1 0 0 0 0 0 0 0 2 DAYS WITH SNOW OR SLEET 1 0 1 0 0 0 0 0 0 0 0 3 5 DAYS WITH DUST 0 1 1 0 0 0 2 0 1 0 0 0 5 WIND DIRECTION (PREVAILING) 180 180 225 225 225 180 180 180 180 180 180 180 180 PREVAILING WIND SPEED(KNOTS) 5.4 5.9 8.0 8.3 9.3 7.3 7.1 7.2 6.0 6.2 5.1 5.4 6.4 PREVAILING WIND PERCENT 21.9 27.1 22.6 22.7 25.8 30.0 40.0 53.5 34.9 25.2 25.5 20.6 28.3 CALMS PERCENT OF WIND 18.1 10.7 11.0 4.0 5.8 11.3 12.9 11.0 17.4 18.7 39.6 42.6 17.0 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 149 155 149 155 1823 VECTOR WIND DIRECTION (MEAN) 221 232 236 253 236 204 171 169 206 227 190 192 213 VECTOR WIND MAGNITUDE(KNOTS) 1.5 3.3 2.1 5.0 4.4 3.5 4.2 4.5 3.2 3.7 1.4 1.4 2.8 WIND STEADINESES (MEAN %) 31.9 47.8 32.3 59.5 53.7 58.3 73.7 80.4 57.1 61.7 43.7 46.7 48.3 WIND SPEED (MEAN KNOTS) 4.7 6.9 6.5 8.4 8.2 6.0 5.7 5.6 5.6 6.0 3.2 3.0 5.8 FASTEST WIND DIRECTION 320 300 270 270 270 310 90 160 290 240 170 280 310 FASTEST WIND SPEED (KNOTS) 39 29 31 41 45 49 31 16 25 31 27 25 49 DAY 28 22 20 9 4 13 16 6 25 12 6 24 DAYS WITH SKY CLEAR (0-2)/8 18 20 11 14 15 19 24 30 30 22 9 12 224 DAYS WITH P.CLOUDY (3-6)/8 7 7 12 11 15 11 7 1 0 5 11 11 98 DAYS WITH CLOUDY (7-8)/8 6 1 8 5 1 0 0 0 0 4 10 8 43 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 0 1 0 1 3 5 DURATION OF SUNSHINE HOURS 206.8 252.3 189.3 249.2 301.9 308.5 343.5 358.2 324.7 263.0 111.1 146.5 3055.0 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 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 858.6 858.9 855.2 856.6 859.0 855.7 852.9 856.3 859.7 861.4 863.0 860.4 858.1 MAX. QFE PRESSURE IN HPA 867.4 866.9 869.3 863.4 866.4 860.9 857.5 861.1 866.0 867.5 872.9 868.6 872.9 DAY-HOUR 19- 6 17- 6 11- 6 23- 6 12- 6 11- 6 9- 6 24- 6 19- 6 9- 6 8- 6 29- 6 MIN. QFE PRESSURE IN HPA 848.1 852.9 845.0 847.3 850.9 849.3 847.7 850.2 852.4 856.4 858.5 852.0 845.0 DAY-HOUR 17-15 5-15 29-15 10-15 4-12 24-15 16-15 5-15 2-15 23-12 19-12 10- 3 MEAN QNH PRESSURE IN HPA 1018.3 1018.5 1014.3 1015.9 1018.7 1014.8 1011.7 1015.5 1019.4 1021.5 1023.3 1020.3 1017.7 MAX. QNH PRESSURE IN HPA 1028.3 1027.7 1030.5 1023.7 1027.2 1020.8 1016.9 1021.1 1026.7 1028.4 1034.6 1029.7 1034.6 DAY-HOUR 19- 6 17- 6 11- 6 23- 6 12- 6 11- 6 9- 6 24- 6 19- 6 9- 6 8- 6 29- 6 MIN. QNH PRESSURE IN HPA 1006.1 1011.7 1002.6 1005.2 1009.4 1007.5 1005.7 1008.6 1011.1 1015.7 1018.1 1010.6 1002.6 DAY-HOUR 17-15 5-15 29-15 10-15 4-12 24-15 16-15 5-15 2-15 23-12 19-12 10- 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 859.1 859.3 855.6 857.1 859.7 856.4 853.6 856.9 860.1 861.8 863.1 860.4 858.6 MAX. QFE PRESSURE IN HPA 866.8 866.4 868.7 862.6 865.4 859.7 857.0 860.2 865.0 866.5 872.2 867.6 872.2 DAY 19 17 11 23 12 11 9 25 19 9 8 29 MIN. QFE PRESSURE IN HPA 849.7 854.2 847.5 849.9 852.4 852.7 849.2 852.6 854.7 858.4 859.6 852.0 847.5 DAY 16 23 25 10 5 24 16 6 3 23 20 10 MEAN QNH PRESSURE IN HPA 1018.8 1019.0 1014.8 1016.5 1019.5 1015.7 1012.5 1016.2 1019.9 1021.9 1023.4 1020.3 1018.2 MAX. QNH PRESSURE IN HPA 1027.6 1027.2 1029.8 1022.8 1026.0 1019.5 1016.4 1020.0 1025.6 1027.3 1033.8 1028.5 1033.8 DAY 19 17 11 23 12 11 9 25 19 9 8 29 MIN. QNH PRESSURE IN HPA 1008.0 1013.2 1005.5 1008.2 1011.1 1011.4 1007.4 1011.3 1013.7 1018.0 1019.4 1010.6 1005.5 DAY 16 23 25 10 5 24 16 6 3 23 20 10 MEAN QFF PRESSURE IN HPA 1019.1 1020.1 1014.1 1011.2 1010.8 1003.3 997.7 1002.0 1009.3 1014.1 1021.2 1020.9 1012.0 MAX. QFF PRESSURE IN HPA 1029.4 1028.4 1030.4 1021.9 1019.1 1007.9 1003.1 1007.0 1015.9 1019.3 1032.2 1031.6 1032.2 DAY 19 8 11 13 7 7 9 29 15 9 8 29 MIN. QFF PRESSURE IN HPA 1007.2 1011.6 1001.5 1004.1 1005.0 998.4 991.7 995.4 1000.1 1008.1 1015.6 1008.8 991.7 DAY 16 22 25 28 5 30 16 14 3 7 5 10 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 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 860.0 860.2 856.5 857.9 860.3 857.1 854.3 857.8 861.1 862.7 864.0 861.5 859.5 MAX. QFE PRESSURE IN HPA 867.4 866.9 869.3 863.4 866.4 860.9 857.5 861.1 866.0 867.5 872.9 868.6 872.9 DAY 19 17 11 23 12 11 9 24 19 9 8 29 MIN. QFE PRESSURE IN HPA 850.2 854.8 848.1 850.6 852.9 851.9 850.0 853.4 855.8 858.8 860.4 854.0 848.1 DAY 16 27 25 10 5 24 16 6 3 23 20 10 MEAN QNH PRESSURE IN HPA 1019.8 1020.0 1015.8 1017.4 1020.2 1016.5 1013.3 1017.3 1021.1 1022.9 1024.4 1021.6 1019.2 MAX. QNH PRESSURE IN HPA 1028.3 1027.7 1030.5 1023.7 1027.2 1020.8 1016.9 1021.1 1026.7 1028.4 1034.6 1029.7 1034.6 DAY 19 17 11 23 12 11 9 24 19 9 8 29 MIN. QNH PRESSURE IN HPA 1008.6 1013.8 1006.1 1009.0 1011.7 1010.5 1008.3 1012.2 1015.0 1018.4 1020.3 1012.9 1006.1 DAY 16 27 25 10 5 24 16 6 3 23 20 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 858.8 858.9 855.5 856.9 859.3 856.1 853.4 856.7 860.2 861.5 862.9 860.3 858.4 MAX. QFE PRESSURE IN HPA 866.1 864.4 867.8 862.5 865.3 859.2 856.9 859.8 865.1 867.0 871.8 867.2 871.8 DAY 19 7 11 23 12 8 19 24 19 9 8 28 MIN. QFE PRESSURE IN HPA 849.3 853.2 846.9 849.8 851.7 851.5 849.3 852.3 854.5 857.7 859.3 853.8 846.9 DAY 16 27 25 10 5 24 16 5 2 23 19 10 MEAN QNH PRESSURE IN HPA 1018.4 1018.6 1014.6 1016.3 1019.0 1015.3 1012.3 1016.0 1020.0 1021.6 1023.2 1020.1 1018.0 MAX. QNH PRESSURE IN HPA 1026.8 1024.9 1028.8 1022.7 1025.9 1018.9 1016.3 1019.6 1025.7 1027.9 1033.4 1028.1 1033.4 DAY 19 7 11 23 12 8 19 24 19 9 8 28 MIN. QNH PRESSURE IN HPA 1007.5 1012.0 1004.8 1008.1 1010.3 1010.1 1007.5 1011.0 1013.5 1017.2 1019.0 1012.7 1004.8 DAY 16 27 25 10 5 24 16 5 2 23 19 10 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 857.7 858.0 854.2 855.6 857.9 854.6 851.8 855.1 858.7 860.4 862.3 859.7 857.2 MAX. QFE PRESSURE IN HPA 864.5 865.1 866.4 860.6 863.3 857.9 855.5 858.4 863.5 865.7 870.8 866.6 870.8 DAY 19 7 11 23 12 8 19 24 19 8 7 28 MIN. QFE PRESSURE IN HPA 848.3 853.1 845.1 847.4 850.9 850.2 848.2 850.8 853.0 856.4 858.5 852.2 845.1 DAY 17 5 29 10 4 24 16 5 2 23 19 10 MEAN QNH PRESSURE IN HPA 1017.1 1017.5 1013.2 1014.8 1017.4 1013.6 1010.5 1014.2 1018.3 1020.3 1022.4 1019.5 1016.6 MAX. QNH PRESSURE IN HPA 1025.0 1025.7 1027.2 1020.5 1023.6 1017.4 1014.7 1018.0 1023.8 1026.4 1032.2 1027.4 1032.2 DAY 19 7 11 23 12 8 19 24 19 8 7 28 MIN. QNH PRESSURE IN HPA 1006.4 1011.9 1002.7 1005.3 1009.4 1008.6 1006.3 1009.3 1011.8 1015.7 1018.1 1010.9 1002.7 DAY 17 5 29 10 4 24 16 5 2 23 19 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 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 857.8 858.1 854.1 855.6 857.8 854.2 851.4 854.9 858.3 860.7 862.7 860.3 857.2 MAX. QFE PRESSURE IN HPA 864.2 864.6 866.2 860.9 863.1 857.7 854.4 858.4 862.5 866.2 870.8 867.4 870.8 DAY 19 7 11 13 12 8 9 28 19 8 7 28 MIN. QFE PRESSURE IN HPA 848.1 852.9 845.0 847.3 851.1 849.3 847.7 850.2 852.4 857.2 859.1 853.1 845.0 DAY 17 5 29 10 4 24 16 5 2 23 19 9 MEAN QNH PRESSURE IN HPA 1017.3 1017.7 1013.1 1014.7 1017.3 1013.1 1009.9 1013.9 1017.9 1020.7 1022.9 1020.2 1016.6 MAX. QNH PRESSURE IN HPA 1024.6 1025.1 1026.9 1020.8 1023.4 1017.2 1013.4 1018.0 1022.7 1026.9 1032.2 1028.3 1032.2 DAY 19 7 11 13 12 8 9 28 19 8 7 28 MIN. QNH PRESSURE IN HPA 1006.1 1011.7 1002.6 1005.2 1009.6 1007.5 1005.7 1008.6 1011.1 1016.6 1018.8 1011.9 1002.6 DAY 17 5 29 10 4 24 16 5 2 23 19 9 MEAN QFF PRESSURE IN HPA 1017.7 1018.7 1012.3 1009.3 1008.5 1000.8 995.1 999.7 1007.3 1012.9 1020.7 1020.7 1010.3 MAX. QFF PRESSURE IN HPA 1026.4 1030.3 1026.9 1019.8 1015.5 1004.8 1000.5 1005.7 1014.5 1019.4 1030.7 1031.6 1031.6 DAY 23 7 11 12 6 1 9 29 15 8 7 28 MIN. QFF PRESSURE IN HPA 1005.9 1010.5 1000.4 1002.0 1001.4 994.8 990.4 993.0 997.4 1007.3 1015.4 1009.4 990.4 DAY 17 26 29 27 4 30 16 14 2 6 5 9 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 JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.2 4.6 9.9 18.2 21.8 29.4 31.0 30.4 26.5 20.0 15.8 10.8 18.4 MINIMUN AIR TEMPERATURE (C) -0.9 0.9 5.5 12.6 15.9 23.2 24.7 24.4 20.7 14.6 11.0 7.1 13.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 2 27 30 27 15 1 0 0 102 DAYS WITH MINIMUM TEMP. <=-4 3 2 0 0 0 0 0 0 0 0 0 0 5 DAYS WITH FREEZING MIN.<= 0 20 12 3 0 0 0 0 0 0 0 0 0 35 TEMPERATURE RECORDS LOWEST(C) -6.4 -5.6 -2.8 3.8 8.6 18.4 20.4 17.5 16.6 7.5 8.0 2.0 -6.4 DAY 14 28 3 6 4 2 25 4 13 11 25 5 MAXIMUM AIR TEMPERATURE (C) 4.7 7.5 13.1 21.6 25.2 32.5 34.5 33.7 29.8 23.3 19.1 13.7 21.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 26 30 28 17 1 0 0 103 DAYS WITH MAXIMUM TEMP. <= 0 1 1 1 0 0 0 0 0 0 0 0 0 3 TEMPERATURE RECORDS HIGHEST(C) 8.2 15.0 19.6 28.6 31.0 36.4 39.2 37.0 34.2 30.5 22.4 17.6 39.2 DAY 30 7 28 15 11 28 11 17 2 1 1 11 DIF. BETWEEN (MAX.-MIN.) (C) 5.6 6.6 7.6 9.0 9.3 9.3 9.8 9.3 9.1 8.7 8.1 6.6 8.3 MEAN DAILY TEMP. (MDT) (C) 1.9 4.2 9.3 17.1 20.5 27.9 29.6 29.1 25.2 18.9 15.0 10.4 17.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 12.0 36.6 205.8 265.8 250.0 127.7 20.2 0.0 0.0 918.2 HEATING DEG. DAYS(BASE 18 0C) 498.6 385.7 270.5 65.0 19.9 0.0 0.0 0.0 0.0 31.2 89.2 234.4 1594.5 DEWPOINT (MEAN C) -4.2 -4.3 -3.3 0.5 3.3 6.5 12.0 8.7 5.8 2.7 1.0 0.7 2.5 MIXING RATIO (G/KG) 3.39 3.37 3.80 4.82 5.85 7.17 10.57 8.35 6.93 5.50 4.95 4.81 5.79 VAPOUR PRESSURE (HPA) 4.64 4.62 5.20 6.59 8.00 9.78 14.27 11.36 9.46 7.56 6.80 6.62 7.91 SATURATION DEF. (HPA) 2.60 4.18 7.56 15.10 18.97 31.81 31.38 32.84 25.73 16.65 11.39 6.55 17.06 RELATIVE HUMIDITY (MEAN %) 65 57 45 33 33 25 33 27 29 34 40 53 40 RELATIVE HUMIDITY (MAX. %) 76 71 59 46 48 35 42 39 39 45 50 63 51 RELATIVE HUMIDITY (MIN. %) 55 46 35 24 24 19 27 21 23 27 33 44 32 RELATIVE HUMIDITY (MEAN% 03UTC) 70 66 57 44 43 34 42 39 38 45 47 60 49 RELATIVE HUMIDITY (MEAN% 09UTC) 61 54 41 29 29 22 30 25 25 31 36 48 36 RELATIVE HUMIDITY (MEAN% 15UTC) 67 55 43 30 31 21 28 23 27 33 40 55 38 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 66.4 58.4 77.6 44.7 31.2 0.0 2.4 17.6 3.0 4.8 1.4 61.3 368.8 DAYS WITH PRECIPITATION >=10 3 3 2 1 0 0 0 1 0 0 0 2 12 DAYS WITH PRECIPITATION >= 5 6 5 5 3 2 0 0 1 0 0 0 2 24 DAYS WITH PRECIPITATION >= 1 7 7 10 6 8 0 1 2 1 1 1 3 47 DAYS WITH PRECIPITATION 14 10 12 9 14 0 2 3 4 2 3 5 78 GREATEST DAILY PRECIPITATION 22.0 18.0 32.0 21.0 7.0 0.0 2.0 16.0 2.0 4.0 1.0 41.0 41.0 DAY 6 12 30 6 4 ** 30 4 14 11 11 4 DAY WITH THUNDER STORM 0 0 0 3 3 0 1 0 2 0 0 0 9 DAYS WITH SNOW OR SLEET 8 6 2 0 0 0 0 0 0 0 0 1 17 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 180 180 225 180 180 180 180 180 180 180 180 180 180 PREVAILING WIND SPEED(KNOTS) 4.9 5.4 8.5 7.1 6.7 8.1 7.1 6.8 6.2 6.0 6.3 4.9 6.4 PREVAILING WIND PERCENT 18.1 25.0 15.5 24.0 21.9 40.0 38.7 36.6 34.7 38.7 28.0 23.2 28.6 CALMS PERCENT OF WIND 45.2 30.7 23.2 16.0 12.9 18.7 17.4 24.2 18.0 20.6 21.3 40.0 24.0 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 153 150 155 150 155 1823 VECTOR WIND DIRECTION (MEAN) 209 207 256 228 226 171 192 184 198 202 212 188 202 VECTOR WIND MAGNITUDE(KNOTS) 1.4 1.9 2.1 3.3 2.3 4.1 4.1 3.6 2.9 3.3 2.4 1.5 2.6 WIND STEADINESES (MEAN %) 46.7 48.7 36.8 53.2 35.9 67.2 67.2 70.6 54.7 64.7 46.2 48.4 51.0 WIND SPEED (MEAN KNOTS) 3.0 3.9 5.7 6.2 6.4 6.1 6.1 5.1 5.3 5.1 5.2 3.1 5.1 FASTEST WIND DIRECTION 270 270 190 300 360 270 270 190 360 330 270 250 190 FASTEST WIND SPEED (KNOTS) 23 31 45 43 39 35 33 39 39 35 35 27 45 DAY 30 8 29 24 12 7 29 2 13 7 28 31 DAYS WITH SKY CLEAR (0-2)/8 11 10 10 12 16 26 17 23 24 24 14 7 194 DAYS WITH P.CLOUDY (3-6)/8 6 8 11 14 10 4 14 7 6 4 10 14 108 DAYS WITH CLOUDY (7-8)/8 14 10 10 4 5 0 0 1 0 3 6 10 63 DAYS WITH VISIBILITY =< 2 KM 6 6 2 0 0 0 0 0 0 0 0 10 24 DURATION OF SUNSHINE HOURS 130.2 148.4 187.2 264.3 260.2 350.8 337.0 331.6 308.9 272.9 212.9 156.0 2960.4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 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 858.2 858.5 857.5 858.2 859.0 858.6 854.7 858.0 858.8 862.5 862.9 864.2 859.3 MAX. QFE PRESSURE IN HPA 866.9 871.3 865.4 868.6 867.2 864.4 863.5 863.2 864.0 870.1 870.5 870.5 871.3 DAY-HOUR 4- 6 23- 6 27- 6 12- 6 8- 6 17- 6 20- 6 25- 6 13- 6 10- 6 21- 6 10- 6 MIN. QFE PRESSURE IN HPA 844.7 847.0 847.6 850.8 850.5 852.7 847.0 853.2 853.0 855.0 857.6 856.6 844.7 DAY-HOUR 13- 9 14- 3 18-12 23-12 29-15 29-15 5-15 22-15 5-15 1-15 1-12 21-12 MEAN QNH PRESSURE IN HPA 1017.7 1018.1 1017.0 1017.7 1018.7 1018.2 1013.7 1017.5 1018.5 1022.7 1023.1 1024.6 1019.0 MAX. QNH PRESSURE IN HPA 1027.7 1032.8 1026.0 1029.7 1028.1 1024.9 1023.8 1023.5 1024.4 1031.4 1031.9 1031.9 1032.8 DAY-HOUR 4- 6 23- 6 27- 6 12- 6 8- 6 17- 6 20- 6 25- 6 13- 6 10- 6 21- 6 10- 6 MIN. QNH PRESSURE IN HPA 1002.2 1004.9 1005.6 1009.3 1008.9 1011.4 1004.9 1012.0 1011.8 1014.1 1017.1 1015.9 1002.2 DAY-HOUR 13- 9 14- 3 18-12 23-12 29-15 29-15 5-15 22-15 5-15 1-15 1-12 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 858.1 858.4 857.6 858.4 859.4 859.3 855.3 858.6 859.3 862.7 862.9 864.2 859.5 MAX. QFE PRESSURE IN HPA 865.3 870.3 864.2 867.5 865.7 864.0 862.0 862.5 863.5 867.9 869.4 870.0 870.3 DAY 4 23 28 12 8 17 20 25 13 10 21 10 MIN. QFE PRESSURE IN HPA 845.2 847.0 849.2 851.0 850.8 855.0 848.2 855.2 854.3 857.0 858.6 856.8 845.2 DAY 13 14 15 24 30 29 5 22 5 1 11 21 MEAN QNH PRESSURE IN HPA 1017.6 1018.0 1017.1 1017.9 1019.2 1019.0 1014.4 1018.2 1019.1 1022.9 1023.1 1024.6 1019.3 MAX. QNH PRESSURE IN HPA 1025.9 1031.6 1024.6 1028.4 1026.4 1024.4 1022.1 1022.7 1023.8 1028.9 1030.6 1031.3 1031.6 DAY 4 23 28 12 8 17 20 25 13 10 21 10 MIN. QNH PRESSURE IN HPA 1002.8 1004.9 1007.4 1009.5 1009.3 1014.1 1006.3 1014.3 1013.3 1016.4 1018.2 1016.1 1002.8 DAY 13 14 15 24 30 29 5 22 5 1 11 21 MEAN QFF PRESSURE IN HPA 1020.4 1019.4 1015.3 1011.4 1010.4 1006.0 1000.3 1004.5 1007.9 1015.4 1018.3 1022.5 1012.7 MAX. QFF PRESSURE IN HPA 1028.6 1034.3 1021.7 1021.2 1021.0 1012.5 1008.7 1008.7 1015.4 1025.6 1025.1 1028.2 1034.3 DAY 4 23 4 7 3 17 21 9 13 11 21 10 MIN. QFF PRESSURE IN HPA 1005.6 1004.8 1003.2 1003.0 1000.5 998.7 990.8 999.5 1000.6 1004.8 1012.2 1014.2 990.8 DAY 13 8 15 24 30 29 8 17 5 1 11 21 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 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 859.0 859.5 858.7 859.4 860.2 859.8 856.0 859.3 860.2 863.8 864.1 865.4 860.4 MAX. QFE PRESSURE IN HPA 866.9 871.3 865.4 868.6 867.2 864.4 863.5 863.2 864.0 870.1 870.5 870.5 871.3 DAY 4 23 27 12 8 17 20 25 13 10 21 10 MIN. QFE PRESSURE IN HPA 845.4 848.6 850.2 852.2 851.4 856.0 849.3 856.1 855.2 857.8 860.3 858.2 845.4 DAY 13 14 15 24 30 29 5 22 5 2 1 21 MEAN QNH PRESSURE IN HPA 1018.7 1019.2 1018.3 1019.1 1020.0 1019.6 1015.2 1019.0 1020.1 1024.2 1024.5 1026.0 1020.3 MAX. QNH PRESSURE IN HPA 1027.7 1032.8 1026.0 1029.7 1028.1 1024.9 1023.8 1023.5 1024.4 1031.4 1031.9 1031.9 1032.8 DAY 4 23 27 12 8 17 20 25 13 10 21 10 MIN. QNH PRESSURE IN HPA 1003.0 1006.7 1008.6 1010.9 1009.9 1015.2 1007.5 1015.3 1014.3 1017.3 1020.2 1017.8 1003.0 DAY 13 14 15 24 30 29 5 22 5 2 1 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 858.2 858.7 857.9 858.6 859.5 859.0 855.3 858.5 859.3 862.9 863.1 864.2 859.6 MAX. QFE PRESSURE IN HPA 865.8 870.3 865.0 868.6 866.2 863.4 862.2 863.0 863.0 868.7 869.3 870.1 870.3 DAY 4 23 27 12 8 6 20 25 12 10 21 29 MIN. QFE PRESSURE IN HPA 844.7 848.6 849.6 852.6 851.1 855.3 848.6 855.1 854.7 857.3 858.6 856.8 844.7 DAY 13 14 15 23 30 29 5 22 6 1 1 21 MEAN QNH PRESSURE IN HPA 1017.8 1018.4 1017.4 1018.3 1019.3 1018.7 1014.4 1018.1 1019.0 1023.1 1023.3 1024.7 1019.4 MAX. QNH PRESSURE IN HPA 1026.5 1031.6 1025.6 1029.7 1026.9 1023.7 1022.3 1023.3 1023.3 1029.8 1030.5 1031.4 1031.6 DAY 4 23 27 12 8 6 20 25 12 10 21 29 MIN. QNH PRESSURE IN HPA 1002.2 1006.7 1007.9 1011.3 1009.6 1014.4 1006.7 1014.2 1013.7 1016.7 1018.2 1016.1 1002.2 DAY 13 14 15 23 30 29 5 22 6 1 1 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 857.5 857.8 856.6 857.3 858.3 857.7 853.7 857.1 857.8 861.7 862.1 863.3 858.4 MAX. QFE PRESSURE IN HPA 864.2 868.7 863.4 867.2 864.6 862.0 859.8 861.2 862.2 867.0 868.6 869.8 869.8 DAY 22 23 27 12 8 6 20 9 12 10 21 29 MIN. QFE PRESSURE IN HPA 845.5 848.0 847.6 850.8 851.5 853.7 847.8 853.4 853.4 855.5 857.6 856.6 845.5 DAY 13 13 18 23 30 29 5 22 5 1 1 21 MEAN QNH PRESSURE IN HPA 1016.9 1017.2 1015.9 1016.7 1017.9 1017.2 1012.6 1016.4 1017.3 1021.7 1022.3 1023.6 1018.0 MAX. QNH PRESSURE IN HPA 1024.6 1029.8 1023.7 1028.1 1025.1 1022.1 1019.6 1021.2 1022.3 1027.9 1029.7 1031.1 1031.1 DAY 22 23 27 12 8 6 20 9 12 10 21 29 MIN. QNH PRESSURE IN HPA 1003.2 1006.0 1005.6 1009.3 1010.1 1012.6 1005.8 1012.2 1012.2 1014.7 1017.1 1015.9 1003.2 DAY 13 13 18 23 30 29 5 22 5 1 1 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 JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 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 858.1 858.3 856.8 857.2 857.8 857.0 853.3 856.4 857.6 861.7 862.3 863.7 858.4 MAX. QFE PRESSURE IN HPA 864.7 868.5 863.4 866.1 864.1 861.5 859.6 861.0 861.7 867.8 868.8 870.0 870.0 DAY 4 23 27 12 8 6 20 9 12 9 21 29 MIN. QFE PRESSURE IN HPA 847.6 848.0 847.6 850.8 850.5 852.7 847.0 853.2 853.0 855.0 857.6 857.0 847.0 DAY 13 13 18 23 29 29 5 22 5 1 1 21 MEAN QNH PRESSURE IN HPA 1017.6 1017.9 1016.2 1016.6 1017.3 1016.4 1012.1 1015.7 1017.0 1021.8 1022.4 1024.1 1017.9 MAX. QNH PRESSURE IN HPA 1025.2 1029.6 1023.7 1026.8 1024.5 1021.5 1019.4 1021.0 1021.8 1028.8 1029.9 1031.3 1031.3 DAY 4 23 27 12 8 6 20 9 12 9 21 29 MIN. QNH PRESSURE IN HPA 1005.6 1006.0 1005.6 1009.3 1008.9 1011.4 1004.9 1012.0 1011.8 1014.1 1017.1 1016.4 1004.9 DAY 13 13 18 23 29 29 5 22 5 1 1 21 MEAN QFF PRESSURE IN HPA 1020.4 1019.3 1014.3 1010.1 1008.5 1003.4 997.9 1002.2 1005.8 1014.5 1017.5 1021.9 1011.3 MAX. QFF PRESSURE IN HPA 1027.9 1031.7 1021.3 1019.5 1019.3 1009.2 1006.6 1008.8 1012.8 1024.9 1024.8 1029.7 1031.7 DAY 22 23 4 7 2 16 20 9 12 10 21 29 MIN. QFF PRESSURE IN HPA 1009.7 1007.3 1000.6 1001.1 999.3 996.3 989.6 998.3 999.0 1002.4 1010.5 1013.9 989.6 DAY 13 7 18 17 29 29 8 21 4 1 1 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 JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.0 9.3 10.4 17.1 24.2 29.7 29.2 31.1 26.3 20.7 10.1 7.3 18.4 MINIMUN AIR TEMPERATURE (C) 1.4 4.9 6.0 11.7 17.6 23.0 23.2 25.1 20.6 15.2 6.2 3.9 13.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 8 26 24 31 19 0 0 0 108 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 10 2 2 0 0 0 0 0 0 0 2 3 19 TEMPERATURE RECORDS LOWEST(C) -2.5 -1.0 -0.4 5.2 11.2 20.0 17.0 21.6 12.5 7.0 -1.0 -1.0 -2.5 DAY 3 9 18 10 5 6 15 31 28 27 30 2 MAXIMUM AIR TEMPERATURE (C) 7.6 12.5 13.6 20.7 27.8 33.2 32.9 34.5 29.9 24.0 12.8 10.2 21.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 8 29 25 31 19 0 0 0 112 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 11.0 17.0 19.5 26.5 34.6 36.0 37.4 36.6 33.2 29.0 18.2 16.6 37.4 DAY 30 27 26 30 31 1 4 25 11 6 19 29 DIF. BETWEEN (MAX.-MIN.) (C) 6.2 7.6 7.6 9.0 10.2 10.2 9.7 9.4 9.3 8.8 6.6 6.3 8.4 MEAN DAILY TEMP. (MDT) (C) 4.5 8.7 9.8 16.2 22.7 28.1 28.0 29.8 25.2 19.6 9.5 7.0 17.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.5 70.9 212.8 217.6 273.4 135.0 23.2 0.0 0.0 933.5 HEATING DEG. DAYS(BASE 18 0C) 418.5 260.5 254.9 65.4 2.2 0.0 0.0 0.0 0.3 31.7 255.2 340.5 1629.3 DEWPOINT (MEAN C) -2.4 -4.4 -2.6 2.6 4.2 5.4 9.3 7.6 5.9 3.2 0.8 -1.0 2.4 MIXING RATIO (G/KG) 3.85 3.40 3.84 5.67 6.31 7.01 8.97 7.93 7.02 5.81 4.90 4.24 5.75 VAPOUR PRESSURE (HPA) 5.30 4.67 5.26 7.74 8.60 9.51 12.13 10.78 9.57 7.97 6.73 5.85 7.84 SATURATION DEF. (HPA) 3.55 7.32 7.79 12.22 22.39 32.84 29.48 34.89 25.69 17.35 5.95 4.61 17.01 RELATIVE HUMIDITY (MEAN %) 62 41 44 40 29 24 32 25 30 35 56 59 40 RELATIVE HUMIDITY (MAX. %) 78 57 58 53 39 33 45 33 38 45 69 71 52 RELATIVE HUMIDITY (MIN. %) 51 31 33 32 23 18 24 19 24 27 46 48 31 RELATIVE HUMIDITY (MEAN% 03UTC) 75 52 53 52 39 32 45 33 37 43 66 68 50 RELATIVE HUMIDITY (MEAN% 09UTC) 56 38 41 37 27 22 30 22 28 34 53 53 37 RELATIVE HUMIDITY (MEAN% 15UTC) 59 39 41 34 25 19 26 21 27 33 56 61 37 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 43.2 16.1 53.2 5.3 1.0 0.0 13.3 0.0 0.2 18.4 66.6 26.0 243.3 DAYS WITH PRECIPITATION >=10 2 0 2 0 0 0 0 0 0 1 4 0 9 DAYS WITH PRECIPITATION >= 5 3 2 5 0 0 0 2 0 0 2 5 3 22 DAYS WITH PRECIPITATION >= 1 6 4 6 2 0 0 3 0 0 3 5 5 34 DAYS WITH PRECIPITATION 10 6 9 5 1 1 4 0 1 4 6 7 54 GREATEST DAILY PRECIPITATION 14.0 7.0 15.4 3.0 1.0 0.0 5.0 0.0 0.2 11.4 22.0 8.0 22.0 DAY 10 8 21 24 10 ** 14 ** 27 27 11 10 DAY WITH THUNDER STORM 0 0 1 0 0 0 0 0 0 0 1 0 2 DAYS WITH SNOW OR SLEET 4 1 0 0 0 0 0 0 0 1 1 2 9 DAYS WITH DUST 1 0 0 0 0 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 180 225 225 225 180 180 180 180 180 180 225 180 180 PREVAILING WIND SPEED(KNOTS) 5.2 8.6 6.8 9.6 7.6 6.7 6.7 6.9 6.2 5.9 5.8 5.4 6.3 PREVAILING WIND PERCENT 31.6 20.0 14.8 17.3 18.1 28.7 25.2 28.4 32.0 25.8 18.7 26.5 22.8 CALMS PERCENT OF WIND 35.5 19.3 41.3 36.0 21.9 28.0 32.9 29.7 19.3 28.4 44.7 53.5 32.7 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 211 239 221 230 238 217 203 192 189 227 218 197 216 VECTOR WIND MAGNITUDE(KNOTS) 2.7 3.5 2.0 3.1 3.4 3.9 3.2 3.0 3.2 3.0 2.2 1.8 2.8 WIND STEADINESES (MEAN %) 71.1 57.4 47.6 55.4 52.3 66.1 69.6 61.2 65.3 58.8 61.1 75.0 58.3 WIND SPEED (MEAN KNOTS) 3.8 6.1 4.2 5.6 6.5 5.9 4.6 4.9 4.9 5.1 3.6 2.4 4.8 FASTEST WIND DIRECTION 170 310 310 300 120 300 210 210 270 360 270 300 360 FASTEST WIND SPEED (KNOTS) 25 23 21 31 33 37 35 37 31 41 31 33 41 DAY 10 21 18 29 18 3 14 31 26 12 20 15 DAYS WITH SKY CLEAR (0-2)/8 12 16 14 11 23 26 24 25 29 25 13 13 231 DAYS WITH P.CLOUDY (3-6)/8 10 9 6 17 7 2 6 6 0 4 12 9 88 DAYS WITH CLOUDY (7-8)/8 9 3 11 2 1 2 1 0 1 2 5 9 46 DAYS WITH VISIBILITY =< 2 KM 6 1 1 0 0 0 0 1 0 0 7 15 31 DURATION OF SUNSHINE HOURS 166.1 216.5 205.0 252.8 330.2 351.9 344.0 332.6 316.9 261.7 206.5 168.6 3152.8 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 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 860.7 858.7 857.4 858.2 857.6 855.1 854.3 857.2 857.9 861.2 861.3 864.7 858.7 MAX. QFE PRESSURE IN HPA 872.3 867.0 864.5 863.3 865.0 861.1 860.6 864.1 864.5 865.8 868.4 871.6 872.3 DAY-HOUR 2- 6 12- 6 31- 6 11- 6 28- 6 9- 6 19- 3 20- 6 29- 6 27- 6 30-15 6- 6 MIN. QFE PRESSURE IN HPA 851.6 850.0 850.5 848.0 846.0 845.5 850.0 852.0 852.2 856.0 853.8 856.7 845.5 DAY-HOUR 9-12 21- 3 21-15 8-15 20-15 25-15 22-15 13-15 16-12 31-15 26- 9 15-12 MEAN QNH PRESSURE IN HPA 1020.6 1018.3 1016.8 1017.7 1017.0 1014.1 1013.2 1016.5 1017.4 1021.2 1021.3 1025.2 1018.3 MAX. QNH PRESSURE IN HPA 1033.9 1027.9 1025.0 1023.6 1025.6 1021.1 1020.5 1024.5 1025.0 1026.5 1029.5 1033.1 1033.9 DAY-HOUR 2- 6 12- 6 31- 6 11- 6 28- 6 9- 6 19- 3 20- 6 29- 6 27- 6 30-15 6- 6 MIN. QNH PRESSURE IN HPA 1010.2 1008.3 1008.9 1006.0 1003.7 1003.2 1008.3 1010.6 1010.9 1015.2 1012.7 1016.0 1003.2 DAY-HOUR 9-12 21- 3 21-15 8-15 20-15 25-15 22-15 13-15 16-12 31-15 26- 9 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 860.7 858.8 857.4 858.6 858.2 855.7 855.0 857.8 858.3 861.5 861.2 864.5 859.0 MAX. QFE PRESSURE IN HPA 870.8 866.2 863.6 863.0 864.5 860.7 860.6 863.2 863.3 864.6 867.0 870.2 870.8 DAY 2 12 31 23 28 9 19 20 29 27 30 6 MIN. QFE PRESSURE IN HPA 855.4 850.0 852.5 852.8 851.0 847.2 851.9 854.8 852.7 858.6 854.1 858.2 847.2 DAY 19 21 3 9 20 25 14 14 16 25 26 16 MEAN QNH PRESSURE IN HPA 1020.6 1018.4 1016.8 1018.2 1017.7 1014.8 1014.0 1017.3 1017.9 1021.5 1021.2 1025.0 1018.6 MAX. QNH PRESSURE IN HPA 1032.2 1026.9 1024.0 1023.3 1025.0 1020.6 1020.5 1023.5 1023.6 1025.1 1027.9 1031.5 1032.2 DAY 2 12 31 23 28 9 19 20 29 27 30 6 MIN. QNH PRESSURE IN HPA 1014.5 1008.3 1011.2 1011.5 1009.5 1005.1 1010.5 1013.8 1011.4 1018.2 1013.0 1017.8 1005.1 DAY 19 21 3 9 20 25 14 14 16 25 26 16 MEAN QFF PRESSURE IN HPA 1021.8 1017.1 1014.7 1012.2 1007.9 1001.7 1000.8 1003.5 1006.8 1013.6 1019.4 1025.2 1012.1 MAX. QFF PRESSURE IN HPA 1034.5 1026.2 1025.6 1019.6 1013.7 1008.9 1007.7 1010.5 1016.3 1022.7 1030.8 1033.2 1034.5 DAY 2 12 19 23 2 9 19 20 29 27 30 1 MIN. QFF PRESSURE IN HPA 1014.2 1007.8 1008.6 1005.4 996.9 991.6 996.1 999.5 999.0 1009.1 1008.7 1015.3 991.6 DAY 9 21 12 14 20 25 5 30 16 19 26 16 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 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 861.7 859.9 858.6 859.5 859.0 856.4 855.7 858.6 859.3 862.7 862.3 865.7 859.9 MAX. QFE PRESSURE IN HPA 872.3 867.0 864.5 863.3 865.0 861.1 860.4 864.1 864.5 865.8 868.2 871.6 872.3 DAY 2 12 31 11 28 9 19 20 29 27 30 6 MIN. QFE PRESSURE IN HPA 854.6 852.0 853.0 853.6 851.0 847.5 852.5 855.4 854.0 860.2 854.1 859.6 847.5 DAY 9 21 3 14 20 25 14 14 16 24 26 15 MEAN QNH PRESSURE IN HPA 1021.7 1019.7 1018.2 1019.2 1018.7 1015.7 1014.8 1018.2 1019.0 1022.9 1022.5 1026.4 1019.7 MAX. QNH PRESSURE IN HPA 1033.9 1027.9 1025.0 1023.6 1025.6 1021.1 1020.3 1024.5 1025.0 1026.5 1029.2 1033.1 1033.9 DAY 2 12 31 11 28 9 19 20 29 27 30 6 MIN. QNH PRESSURE IN HPA 1013.6 1010.6 1011.8 1012.5 1009.5 1005.5 1011.2 1014.5 1012.9 1020.0 1013.0 1019.4 1005.5 DAY 9 21 3 14 20 25 14 14 16 24 26 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 860.8 859.0 857.9 858.7 858.1 855.6 854.8 857.7 858.5 861.6 861.4 864.8 859.1 MAX. QFE PRESSURE IN HPA 871.4 866.0 864.3 863.0 863.5 860.2 859.2 863.1 863.8 865.3 868.2 870.7 871.4 DAY 2 12 31 11 28 1 19 20 30 26 30 6 MIN. QFE PRESSURE IN HPA 852.8 852.8 852.1 851.5 850.2 847.0 852.0 854.2 853.6 858.2 853.8 857.8 847.0 DAY 9 4 3 8 20 25 14 13 16 31 26 15 MEAN QNH PRESSURE IN HPA 1020.8 1018.7 1017.4 1018.3 1017.6 1014.8 1013.9 1017.1 1018.1 1021.6 1021.5 1025.4 1018.8 MAX. QNH PRESSURE IN HPA 1032.9 1026.7 1024.8 1023.3 1023.8 1020.0 1018.9 1023.4 1024.2 1025.9 1029.2 1032.1 1032.9 DAY 2 12 31 11 28 1 19 20 30 26 30 6 MIN. QNH PRESSURE IN HPA 1011.5 1011.5 1010.7 1010.1 1008.6 1004.9 1010.6 1013.2 1012.5 1017.8 1012.7 1017.3 1004.9 DAY 9 4 3 8 20 25 14 13 16 31 26 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 859.8 857.8 856.5 857.2 856.6 854.3 853.3 856.1 856.9 860.2 860.6 864.0 857.8 MAX. QFE PRESSURE IN HPA 870.3 864.0 862.7 861.5 862.0 859.0 857.0 861.0 863.0 863.9 867.5 869.6 870.3 DAY 2 12 31 11 27 1 18 20 30 26 30 6 MIN. QFE PRESSURE IN HPA 851.6 852.0 851.5 848.5 847.5 846.2 850.9 852.5 852.2 856.4 854.0 856.7 846.2 DAY 9 4 3 8 20 25 12 13 16 31 26 15 MEAN QNH PRESSURE IN HPA 1019.6 1017.3 1015.8 1016.7 1015.9 1013.2 1012.2 1015.4 1016.3 1020.1 1020.5 1024.4 1017.3 MAX. QNH PRESSURE IN HPA 1031.6 1024.4 1022.9 1021.5 1022.1 1018.7 1016.4 1021.0 1023.3 1024.3 1028.4 1030.8 1031.6 DAY 2 12 31 11 27 1 18 20 30 26 30 6 MIN. QNH PRESSURE IN HPA 1010.2 1010.6 1010.1 1006.6 1005.5 1004.0 1009.4 1011.2 1010.9 1015.7 1012.9 1016.0 1004.0 DAY 9 4 3 8 20 25 12 13 16 31 26 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 JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 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 860.4 857.9 856.6 856.9 856.1 853.4 852.6 855.6 856.5 860.1 860.8 864.4 857.6 MAX. QFE PRESSURE IN HPA 870.3 864.6 862.0 861.5 861.4 858.0 856.5 860.0 862.0 863.4 868.4 869.4 870.3 DAY 2 12 31 11 28 1 18 20 30 26 30 6 MIN. QFE PRESSURE IN HPA 852.9 852.0 850.5 848.0 846.0 845.5 850.0 852.0 852.4 856.0 855.0 857.2 845.5 DAY 9 3 21 8 20 25 22 13 11 31 25 15 MEAN QNH PRESSURE IN HPA 1020.3 1017.4 1015.9 1016.3 1015.4 1012.2 1011.4 1014.8 1015.9 1019.9 1020.8 1024.9 1017.1 MAX. QNH PRESSURE IN HPA 1031.6 1025.1 1022.1 1021.5 1021.4 1017.5 1015.8 1019.8 1022.1 1023.7 1029.5 1030.6 1031.6 DAY 2 12 31 11 28 1 18 20 30 26 30 6 MIN. QNH PRESSURE IN HPA 1011.7 1010.6 1008.9 1006.0 1003.7 1003.2 1008.3 1010.6 1011.1 1015.2 1014.1 1016.6 1003.2 DAY 9 3 21 8 20 25 22 13 11 31 25 15 MEAN QFF PRESSURE IN HPA 1021.5 1016.0 1013.7 1010.2 1005.4 999.1 998.2 1001.0 1004.8 1012.1 1019.1 1025.0 1010.5 MAX. QFF PRESSURE IN HPA 1035.7 1024.0 1023.0 1017.8 1011.3 1005.2 1004.2 1007.2 1014.1 1021.2 1033.2 1032.1 1035.7 DAY 2 12 18 11 23 9 28 20 29 26 30 5 MIN. QFF PRESSURE IN HPA 1011.8 1009.0 1005.4 999.1 992.0 989.3 993.7 996.7 998.5 1008.2 1010.4 1015.7 989.3 DAY 9 3 26 8 20 25 4 13 11 19 25 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 JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.5 6.3 10.2 20.3 25.7 29.0 30.6 30.7 27.3 17.5 9.5 5.9 18.1 MINIMUN AIR TEMPERATURE (C) 1.2 1.7 5.2 14.8 19.3 22.4 24.6 24.9 21.7 13.0 6.2 3.1 13.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 9 24 31 31 18 0 0 0 113 DAYS WITH MINIMUM TEMP. <=-4 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH FREEZING MIN.<= 0 14 9 2 0 0 0 0 0 0 0 0 0 25 TEMPERATURE RECORDS LOWEST(C) -5.0 -3.0 -2.0 10.0 14.5 12.0 21.5 21.6 17.5 8.5 2.2 0.6 -5.0 DAY 18 8 3 1 2 13 27 12 30 4 11 16 MAXIMUM AIR TEMPERATURE (C) 7.4 9.4 13.7 23.8 29.1 32.6 34.0 34.2 30.7 20.5 12.2 8.2 21.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 12 24 31 31 19 0 0 0 117 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.2 16.2 19.0 28.4 33.0 37.5 37.4 38.0 35.4 25.5 19.8 11.0 38.0 DAY 1 24 30 20 26 30 11 3 8 11 3 22 DIF. BETWEEN (MAX.-MIN.) (C) 6.2 7.7 8.5 9.0 9.8 10.2 9.4 9.3 9.0 7.5 6.0 5.1 8.1 MEAN DAILY TEMP. (MDT) (C) 4.3 5.6 9.5 19.3 24.2 27.5 29.3 29.6 26.2 16.7 9.2 5.6 17.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 8.7 100.4 200.3 257.6 265.3 156.2 0.6 0.0 0.0 989.3 HEATING DEG. DAYS(BASE 18 0C) 423.9 360.7 264.9 12.7 0.0 0.0 0.0 0.0 0.0 59.8 262.8 383.3 1768.1 DEWPOINT (MEAN C) -4.0 -4.5 -3.7 2.7 3.3 6.5 9.2 9.3 8.6 4.8 1.9 1.0 2.9 MIXING RATIO (G/KG) 3.47 3.29 3.65 5.70 5.89 7.27 8.76 8.82 8.39 6.45 5.26 4.90 5.99 VAPOUR PRESSURE (HPA) 4.76 4.51 5.00 7.79 8.03 9.88 11.88 11.98 11.42 8.84 7.24 6.73 8.17 SATURATION DEF. (HPA) 4.01 5.30 7.89 16.50 25.56 31.47 32.61 32.73 25.58 11.71 4.92 2.64 16.74 RELATIVE HUMIDITY (MEAN %) 57 49 41 33 25 26 28 28 33 47 62 73 42 RELATIVE HUMIDITY (MAX. %) 70 65 53 43 34 34 36 35 42 58 76 84 53 RELATIVE HUMIDITY (MIN. %) 47 38 32 25 18 20 22 22 27 39 51 65 34 RELATIVE HUMIDITY (MEAN% 03UTC) 65 61 50 42 33 33 35 35 41 56 71 80 50 RELATIVE HUMIDITY (MEAN% 09UTC) 53 46 39 30 23 24 26 27 30 45 58 68 39 RELATIVE HUMIDITY (MEAN% 15UTC) 59 47 36 29 20 22 23 24 30 46 64 77 40 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 45.1 43.5 17.7 1.6 0.6 0.0 0.8 0.0 2.8 48.5 23.3 83.4 267.3 DAYS WITH PRECIPITATION >=10 1 2 0 0 0 0 0 0 0 2 0 3 8 DAYS WITH PRECIPITATION >= 5 3 2 2 0 0 0 0 0 0 3 2 5 17 DAYS WITH PRECIPITATION >= 1 8 4 3 1 0 0 0 0 1 6 7 7 37 DAYS WITH PRECIPITATION 11 7 6 4 2 1 1 0 2 9 13 11 67 GREATEST DAILY PRECIPITATION 18.0 29.0 7.0 1.0 0.6 0.0 0.8 0.0 2.0 19.0 6.0 29.0 29.0 DAY 28 14 23 22 24 ** 13 ** 6 17 30 1 DAY WITH THUNDER STORM 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 4 3 2 0 0 0 0 0 0 0 0 0 9 DAYS WITH DUST 1 0 0 0 0 1 0 0 0 0 1 0 3 WIND DIRECTION (PREVAILING) 180 180 225 225 225 180 180 180 180 180 180 180 180 PREVAILING WIND SPEED(KNOTS) 5.3 7.0 10.9 10.6 11.3 6.9 7.3 6.5 6.8 5.9 5.6 5.4 6.6 PREVAILING WIND PERCENT 15.5 24.8 26.5 20.0 25.8 31.3 45.2 39.4 30.7 29.7 22.7 16.1 25.4 CALMS PERCENT OF WIND 43.2 29.0 17.4 19.3 21.9 18.7 20.0 14.8 23.3 33.5 49.3 52.3 28.6 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 196 198 241 241 233 177 173 166 164 185 188 208 199 VECTOR WIND MAGNITUDE(KNOTS) 1.8 2.8 3.7 4.5 4.9 3.4 4.4 4.0 3.1 2.4 1.4 1.5 2.7 WIND STEADINESES (MEAN %) 48.6 51.9 49.3 58.4 64.5 60.7 80.0 72.7 62.0 60.0 45.2 57.7 50.9 WIND SPEED (MEAN KNOTS) 3.7 5.4 7.5 7.7 7.6 5.6 5.5 5.5 5.0 4.0 3.1 2.6 5.3 FASTEST WIND DIRECTION 220 270 270 230 250 20 360 80 270 220 300 260 20 FASTEST WIND SPEED (KNOTS) 35 33 35 45 35 51 23 27 35 31 27 23 51 DAY 21 25 24 9 20 17 11 31 29 31 23 25 DAYS WITH SKY CLEAR (0-2)/8 16 19 20 15 26 30 23 22 27 18 10 7 233 DAYS WITH P.CLOUDY (3-6)/8 5 6 6 9 4 0 8 9 1 6 12 12 78 DAYS WITH CLOUDY (7-8)/8 10 4 5 6 1 0 0 0 2 7 8 12 55 DAYS WITH VISIBILITY =< 2 KM 7 2 0 1 3 0 0 0 0 3 6 12 34 DURATION OF SUNSHINE HOURS 177.8 205.8 255.9 246.0 332.4 362.0 331.3 340.9 294.8 221.4 157.0 111.5 3036.8 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 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 858.6 858.8 857.4 858.0 856.0 855.2 856.6 857.0 858.0 862.1 863.3 861.6 858.6 MAX. QFE PRESSURE IN HPA 866.0 866.3 865.0 863.8 861.8 861.2 864.1 862.4 864.0 868.2 873.0 868.8 873.0 DAY-HOUR 31- 6 11- 6 27- 6 2- 6 5- 6 16- 6 30- 6 23- 6 29-12 16- 6 17- 6 4- 6 MIN. QFE PRESSURE IN HPA 849.0 848.4 851.2 853.8 850.5 847.4 849.6 850.0 850.0 857.0 857.0 853.0 847.4 DAY-HOUR 21-12 7- 3 24-12 10-12 26-15 24-15 11-15 30-15 1-15 1-12 21-12 15-12 MEAN QNH PRESSURE IN HPA 1018.2 1018.5 1016.9 1017.6 1015.2 1014.3 1015.9 1016.4 1017.6 1022.2 1023.7 1021.6 1018.2 MAX. QNH PRESSURE IN HPA 1026.7 1027.1 1025.6 1024.2 1021.9 1021.2 1024.5 1022.6 1024.4 1029.2 1034.7 1029.9 1034.7 DAY-HOUR 31- 6 11- 6 27- 6 2- 6 5- 6 16- 6 30- 6 23- 6 29-12 16- 6 17- 6 4- 6 MIN. QNH PRESSURE IN HPA 1007.2 1006.5 1009.7 1012.7 1008.9 1005.3 1007.9 1008.3 1008.3 1016.4 1016.4 1011.8 1005.3 DAY-HOUR 21-12 7- 3 24-12 10-12 26-15 24-15 11-15 30-15 1-15 1-12 21-12 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 858.7 858.8 857.7 858.2 856.5 855.7 857.2 857.6 858.5 862.1 863.3 861.2 858.8 MAX. QFE PRESSURE IN HPA 865.4 865.8 864.0 862.5 860.6 860.3 863.4 861.8 862.5 866.8 872.0 867.4 872.0 DAY 31 11 27 3 5 3 31 23 26 16 17 4 MIN. QFE PRESSURE IN HPA 850.0 848.4 852.0 855.0 851.8 849.6 851.6 852.0 851.8 858.0 857.2 853.9 848.4 DAY 21 7 9 11 27 26 12 31 1 1 7 16 MEAN QNH PRESSURE IN HPA 1018.3 1018.4 1017.2 1017.7 1015.8 1014.9 1016.7 1017.1 1018.1 1022.2 1023.6 1021.2 1018.4 MAX. QNH PRESSURE IN HPA 1026.0 1026.5 1024.4 1022.7 1020.5 1020.2 1023.7 1021.9 1022.7 1027.6 1033.6 1028.3 1033.6 DAY 31 11 27 3 5 3 31 23 26 16 17 4 MIN. QNH PRESSURE IN HPA 1008.3 1006.5 1010.6 1014.1 1010.4 1007.9 1010.2 1010.6 1010.4 1017.5 1016.6 1012.8 1006.5 DAY 21 7 9 11 27 26 12 31 1 1 7 16 MEAN QFF PRESSURE IN HPA 1019.8 1019.1 1015.3 1010.0 1005.0 1002.2 1002.8 1003.4 1006.3 1016.1 1022.1 1021.8 1012.0 MAX. QFF PRESSURE IN HPA 1028.9 1028.0 1024.2 1017.0 1009.5 1012.2 1010.6 1009.0 1013.3 1025.1 1033.8 1028.6 1033.8 DAY 31 11 1 3 13 14 31 23 26 16 17 4 MIN. QFF PRESSURE IN HPA 1008.6 1005.5 1007.1 1004.6 997.8 994.5 994.5 996.2 996.6 1009.6 1013.4 1013.8 994.5 DAY 21 7 25 21 27 26 12 31 1 1 2 15 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 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 859.8 859.8 858.7 859.3 857.3 856.4 857.9 858.4 859.4 863.3 864.4 862.5 859.8 MAX. QFE PRESSURE IN HPA 866.0 866.3 865.0 863.8 861.8 861.2 864.1 862.4 863.2 868.2 873.0 868.8 873.0 DAY 31 11 27 2 5 16 30 23 29 16 17 4 MIN. QFE PRESSURE IN HPA 850.4 849.0 853.3 856.2 853.1 851.2 852.5 852.8 852.2 859.1 858.9 854.8 849.0 DAY 21 7 9 10 27 26 11 31 1 1 22 15 MEAN QNH PRESSURE IN HPA 1019.5 1019.6 1018.3 1019.0 1016.7 1015.7 1017.4 1018.0 1019.1 1023.6 1024.9 1022.7 1019.6 MAX. QNH PRESSURE IN HPA 1026.7 1027.1 1025.6 1024.2 1021.9 1021.2 1024.5 1022.6 1023.5 1029.2 1034.7 1029.9 1034.7 DAY 31 11 27 2 5 16 30 23 29 16 17 4 MIN. QNH PRESSURE IN HPA 1008.8 1007.2 1012.1 1015.5 1011.9 1009.7 1011.2 1011.5 1010.9 1018.8 1018.6 1013.8 1007.2 DAY 21 7 9 10 27 26 11 31 1 1 22 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 858.8 859.3 857.9 858.6 856.6 855.8 857.3 857.6 858.6 862.4 863.5 861.7 859.0 MAX. QFE PRESSURE IN HPA 865.4 866.0 864.4 863.2 861.4 860.6 863.7 861.8 863.8 866.8 872.4 868.2 872.4 DAY 31 29 27 2 5 16 30 23 29 16 17 4 MIN. QFE PRESSURE IN HPA 850.0 849.6 852.0 855.6 851.8 850.4 851.8 852.2 851.8 858.2 858.3 853.4 849.6 DAY 21 7 24 10 27 24 11 31 1 1 21 15 MEAN QNH PRESSURE IN HPA 1018.5 1019.0 1017.4 1018.2 1015.9 1015.0 1016.7 1017.1 1018.2 1022.6 1023.8 1021.7 1018.7 MAX. QNH PRESSURE IN HPA 1026.0 1026.7 1024.9 1023.5 1021.4 1020.5 1024.1 1021.9 1024.2 1027.6 1034.1 1029.2 1034.1 DAY 31 29 27 2 5 16 30 23 29 16 17 4 MIN. QNH PRESSURE IN HPA 1008.3 1007.9 1010.6 1014.8 1010.4 1008.8 1010.4 1010.9 1010.4 1017.8 1017.9 1012.2 1007.9 DAY 21 7 24 10 27 24 11 31 1 1 21 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 857.8 858.0 856.5 857.3 855.2 854.3 855.7 856.1 857.1 861.3 862.7 861.0 857.7 MAX. QFE PRESSURE IN HPA 864.0 864.3 862.4 861.2 859.8 859.0 862.0 860.2 864.0 865.8 871.0 867.0 871.0 DAY 31 10 27 2 5 16 30 23 29 16 17 4 MIN. QFE PRESSURE IN HPA 849.0 849.2 851.2 853.8 851.0 848.4 850.0 850.8 850.2 857.0 857.0 853.0 848.4 DAY 21 7 24 10 27 24 11 31 1 1 21 15 MEAN QNH PRESSURE IN HPA 1017.3 1017.5 1015.8 1016.7 1014.3 1013.3 1014.8 1015.3 1016.5 1021.3 1022.9 1020.9 1017.2 MAX. QNH PRESSURE IN HPA 1024.4 1024.8 1022.6 1021.2 1019.6 1018.7 1022.1 1020.0 1024.4 1026.5 1032.4 1027.9 1032.4 DAY 31 10 27 2 5 16 30 23 29 16 17 4 MIN. QNH PRESSURE IN HPA 1007.2 1007.4 1009.7 1012.7 1009.5 1006.5 1008.3 1009.3 1008.6 1016.4 1016.4 1011.8 1006.5 DAY 21 7 24 10 27 24 11 31 1 1 21 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 JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 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 858.1 858.2 856.4 856.9 854.5 853.6 855.0 855.5 856.6 861.4 862.9 861.5 857.6 MAX. QFE PRESSURE IN HPA 864.0 864.5 861.8 860.6 859.0 858.6 861.5 860.0 863.2 866.0 871.0 867.8 871.0 DAY 24 10 27 4 5 16 30 20 29 16 17 4 MIN. QFE PRESSURE IN HPA 849.0 850.9 851.3 853.8 850.5 847.4 849.6 850.0 850.0 857.0 857.2 853.7 847.4 DAY 21 7 24 10 26 24 11 30 1 1 21 15 MEAN QNH PRESSURE IN HPA 1017.6 1017.8 1015.7 1016.2 1013.5 1012.5 1014.1 1014.7 1016.0 1021.4 1023.2 1021.6 1017.0 MAX. QNH PRESSURE IN HPA 1024.4 1025.0 1021.9 1020.5 1018.7 1018.2 1021.5 1019.8 1023.5 1026.7 1032.4 1028.8 1032.4 DAY 24 10 27 4 5 16 30 20 29 16 17 4 MIN. QNH PRESSURE IN HPA 1007.2 1009.4 1009.8 1012.7 1008.9 1005.3 1007.9 1008.3 1008.3 1016.4 1016.6 1012.6 1005.3 DAY 21 7 24 10 26 24 11 30 1 1 21 15 MEAN QFF PRESSURE IN HPA 1019.1 1018.4 1013.7 1008.4 1002.7 999.7 1000.3 1000.9 1004.3 1015.3 1021.7 1022.1 1010.5 MAX. QFF PRESSURE IN HPA 1028.0 1027.2 1022.3 1014.8 1007.6 1007.8 1008.1 1007.1 1013.9 1023.4 1033.5 1029.1 1033.5 DAY 30 10 3 1 2 16 30 20 29 16 17 4 MIN. QFF PRESSURE IN HPA 1007.3 1010.3 1005.5 1003.7 995.4 989.7 992.1 993.9 994.6 1008.1 1012.3 1013.5 989.7 DAY 21 6 24 10 26 24 11 30 1 1 2 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 JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.2 7.2 13.5 20.3 24.2 29.0 30.0 30.6 26.1 19.8 11.7 8.4 18.8 MINIMUN AIR TEMPERATURE (C) 1.0 3.0 8.7 14.6 18.4 22.6 24.5 24.4 20.8 14.9 7.6 5.2 13.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 7 22 30 29 20 1 0 0 109 DAYS WITH MINIMUM TEMP. <=-4 4 0 0 0 0 0 0 0 0 0 0 0 4 DAYS WITH FREEZING MIN.<= 0 12 2 0 0 0 0 0 0 0 0 1 0 15 TEMPERATURE RECORDS LOWEST(C) -6.0 -2.0 1.0 9.0 10.8 13.0 19.0 18.0 14.0 9.8 0.0 0.4 -6.0 DAY 28 23 12 10 4 12 19 12 20 27 20 22 MAXIMUM AIR TEMPERATURE (C) 6.8 10.4 17.1 23.8 27.3 32.5 33.6 34.2 29.7 23.2 14.9 11.0 22.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 6 23 30 29 21 0 0 0 109 DAYS WITH MAXIMUM TEMP. <= 0 3 0 0 0 0 0 0 0 0 0 0 0 3 TEMPERATURE RECORDS HIGHEST(C) 13.8 17.2 24.4 27.0 33.5 38.0 38.4 37.6 33.2 28.6 23.0 17.2 38.4 DAY 13 28 31 5 15 27 10 22 5 1 6 31 DIF. BETWEEN (MAX.-MIN.) (C) 5.8 7.4 8.4 9.2 8.9 9.9 9.1 9.8 8.9 8.3 7.3 5.8 8.2 MEAN DAILY TEMP. (MDT) (C) 3.9 6.7 12.9 19.2 22.8 27.6 29.0 29.3 25.2 19.0 11.3 8.1 17.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 7.5 75.7 202.1 249.2 257.7 135.6 9.8 0.0 0.0 937.7 HEATING DEG. DAYS(BASE 18 0C) 438.1 315.8 160.9 18.8 1.6 2.5 0.0 0.0 0.5 20.5 202.3 307.8 1468.7 DEWPOINT (MEAN C) -2.5 -4.2 0.4 0.9 4.1 5.4 9.9 7.2 4.9 2.5 0.1 0.3 2.4 MIXING RATIO (G/KG) 3.77 3.38 4.72 4.91 6.24 6.87 9.38 7.63 6.46 5.56 4.63 4.76 5.69 VAPOUR PRESSURE (HPA) 5.18 4.64 6.46 6.71 8.50 9.33 12.67 10.38 8.84 7.62 6.36 6.55 7.77 SATURATION DEF. (HPA) 3.36 5.75 9.69 17.69 22.50 32.21 30.44 34.47 25.86 16.05 7.95 4.64 17.55 RELATIVE HUMIDITY (MEAN %) 66 47 45 29 30 26 31 25 28 35 47 61 39 RELATIVE HUMIDITY (MAX. %) 75 60 57 39 40 35 41 34 38 50 61 75 50 RELATIVE HUMIDITY (MIN. %) 57 37 35 22 22 20 23 20 22 26 36 49 31 RELATIVE HUMIDITY (MEAN% 03UTC) 73 57 54 37 39 34 41 34 37 48 57 72 49 RELATIVE HUMIDITY (MEAN% 09UTC) 62 43 43 27 27 24 29 22 25 30 44 52 36 RELATIVE HUMIDITY (MEAN% 15UTC) 66 48 41 27 26 21 25 21 26 35 50 63 37 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 54.0 2.4 21.4 2.8 18.8 18.0 0.3 0.7 5.4 15.5 30.3 50.5 220.1 DAYS WITH PRECIPITATION >=10 3 0 1 0 1 1 0 0 0 0 0 1 7 DAYS WITH PRECIPITATION >= 5 3 0 1 0 1 1 0 0 1 0 4 4 15 DAYS WITH PRECIPITATION >= 1 6 1 5 1 3 1 0 0 1 6 7 7 38 DAYS WITH PRECIPITATION 11 3 7 3 5 1 1 3 2 7 11 14 68 GREATEST DAILY PRECIPITATION 20.0 2.0 12.0 2.0 14.0 18.0 0.3 0.3 5.0 4.6 8.0 23.0 23.0 DAY 24 19 10 27 4 12 19 9 20 26 7 5 DAY WITH THUNDER STORM 0 0 0 1 0 0 0 0 0 4 0 0 5 DAYS WITH SNOW OR SLEET 8 0 1 0 0 0 0 0 0 0 0 0 9 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 180 225 180 225 180 180 180 180 180 180 180 180 180 PREVAILING WIND SPEED(KNOTS) 4.8 9.6 6.1 9.9 7.6 7.4 6.2 6.9 7.2 6.3 6.3 7.1 6.6 PREVAILING WIND PERCENT 18.7 20.7 27.1 24.7 17.4 22.7 24.5 33.5 28.7 20.6 18.7 18.7 21.7 CALMS PERCENT OF WIND 60.6 41.4 31.0 32.7 23.9 22.7 31.0 25.2 29.3 37.4 48.0 54.8 36.5 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 204 227 207 225 208 190 190 189 203 221 219 205 207 VECTOR WIND MAGNITUDE(KNOTS) 1.5 3.5 3.0 3.9 3.0 3.1 3.3 3.6 3.2 2.3 1.3 1.8 2.7 WIND STEADINESES (MEAN %) 71.4 71.4 62.5 66.1 50.0 57.4 70.2 63.2 58.2 47.9 36.1 54.5 57.4 WIND SPEED (MEAN KNOTS) 2.1 4.9 4.8 5.9 6.0 5.4 4.7 5.7 5.5 4.8 3.6 3.3 4.7 FASTEST WIND DIRECTION 210 250 180 180 230 240 240 360 280 280 240 220 250 FASTEST WIND SPEED (KNOTS) 19 45 37 43 39 25 31 35 33 43 33 31 45 DAY 1 21 25 9 15 7 18 7 26 25 18 21 DAYS WITH SKY CLEAR (0-2)/8 13 13 13 15 15 26 26 29 25 19 14 9 217 DAYS WITH P.CLOUDY (3-6)/8 5 10 12 8 14 3 5 2 4 12 9 13 97 DAYS WITH CLOUDY (7-8)/8 13 5 6 7 2 1 0 0 1 0 7 9 51 DAYS WITH VISIBILITY =< 2 KM 7 0 2 0 0 0 1 0 0 0 4 12 26 DURATION OF SUNSHINE HOURS 149.8 207.9 234.7 255.2 304.8 344.4 345.1 338.3 297.3 261.2 166.9 134.9 3040.5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 861.5 859.0 858.6 857.8 856.5 854.7 854.7 857.4 859.3 861.5 861.5 862.5 858.7 MAX. QFE PRESSURE IN HPA 865.8 869.0 868.2 866.6 861.0 862.6 862.0 862.6 866.6 870.2 868.9 867.6 870.2 DAY-HOUR 17- 6 9- 9 1- 6 2- 6 1- 6 2- 6 29- 6 14- 6 22- 6 10- 6 2- 6 10- 6 MIN. QFE PRESSURE IN HPA 856.4 843.4 846.8 850.0 850.0 847.6 847.4 850.6 852.7 855.6 850.4 855.4 843.4 DAY-HOUR 19-12 21-12 25-12 12-12 29-15 6-15 10-15 27-12 5-15 31-15 18-12 5- 9 MEAN QNH PRESSURE IN HPA 1021.6 1018.7 1018.2 1017.3 1015.8 1013.7 1013.8 1016.8 1019.0 1021.5 1021.5 1022.7 1018.4 MAX. QNH PRESSURE IN HPA 1026.5 1030.2 1029.2 1027.4 1021.0 1022.8 1022.1 1022.8 1027.4 1031.5 1030.0 1028.5 1031.5 DAY-HOUR 17- 6 9- 9 1- 6 2- 6 1- 6 2- 6 29- 6 14- 6 22- 6 10- 6 2- 6 10- 6 MIN. QNH PRESSURE IN HPA 1015.7 1000.8 1004.7 1008.3 1008.3 1005.6 1005.3 1009.0 1011.4 1014.8 1008.8 1014.5 1000.8 DAY-HOUR 19-12 21-12 25-12 12-12 29-15 6-15 10-15 27-12 5-15 31-15 18-12 5- 9 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 861.3 859.0 858.7 858.2 856.8 855.1 855.3 858.0 859.6 861.7 861.3 862.5 859.0 MAX. QFE PRESSURE IN HPA 865.0 867.0 867.0 866.2 860.1 861.8 861.4 862.3 865.4 868.8 867.5 866.4 868.8 DAY 17 9 2 2 17 2 29 5 22 10 2 10 MIN. QFE PRESSURE IN HPA 857.0 848.6 847.5 853.8 850.0 849.4 849.8 852.4 854.4 857.6 851.7 856.0 847.5 DAY 19 21 25 9 30 18 18 27 1 1 18 5 MEAN QNH PRESSURE IN HPA 1021.3 1018.7 1018.3 1017.7 1016.1 1014.2 1014.4 1017.6 1019.4 1021.7 1021.3 1022.7 1018.6 MAX. QNH PRESSURE IN HPA 1025.6 1027.9 1027.9 1026.9 1019.9 1021.9 1021.4 1022.5 1026.0 1029.9 1028.4 1027.2 1029.9 DAY 17 9 2 2 17 2 29 5 22 10 2 10 MIN. QNH PRESSURE IN HPA 1016.4 1006.7 1005.5 1012.7 1008.3 1007.6 1008.1 1011.1 1013.4 1017.1 1010.3 1015.2 1005.5 DAY 19 21 25 9 30 18 18 27 1 1 18 5 MEAN QFF PRESSURE IN HPA 1023.2 1019.0 1014.5 1010.0 1006.0 1001.4 1000.7 1004.0 1008.5 1014.2 1018.4 1021.9 1011.8 MAX. QFF PRESSURE IN HPA 1029.7 1029.3 1026.2 1018.8 1011.7 1011.0 1008.3 1011.0 1019.2 1022.9 1029.4 1027.2 1029.7 DAY 29 10 12 2 12 2 29 14 22 11 20 23 MIN. QFF PRESSURE IN HPA 1017.3 1004.4 999.1 1003.4 995.8 994.3 992.8 997.4 1000.9 1006.0 1006.5 1015.9 992.8 DAY 19 21 25 26 30 18 11 24 1 1 18 5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 862.4 860.2 859.9 859.1 857.6 855.9 856.1 858.8 860.6 862.8 862.4 863.6 860.0 MAX. QFE PRESSURE IN HPA 865.8 868.5 868.2 866.6 861.0 862.6 862.0 862.6 866.6 870.2 868.9 867.6 870.2 DAY 17 9 1 2 1 2 29 14 22 10 2 10 MIN. QFE PRESSURE IN HPA 857.0 847.8 848.8 854.4 850.8 850.0 850.2 852.8 855.6 858.6 851.9 856.3 847.8 DAY 19 21 26 9 30 18 18 27 1 31 18 5 MEAN QNH PRESSURE IN HPA 1022.6 1020.1 1019.7 1018.8 1017.1 1015.1 1015.3 1018.4 1020.5 1023.1 1022.6 1023.9 1019.8 MAX. QNH PRESSURE IN HPA 1026.5 1029.6 1029.2 1027.4 1021.0 1022.8 1022.1 1022.8 1027.4 1031.5 1030.0 1028.5 1031.5 DAY 17 9 1 2 1 2 29 14 22 10 2 10 MIN. QNH PRESSURE IN HPA 1016.4 1005.8 1007.0 1013.4 1009.3 1008.3 1008.6 1011.5 1014.8 1018.2 1010.5 1015.6 1005.8 DAY 19 21 26 9 30 18 18 27 1 31 18 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 861.8 859.4 859.1 858.2 857.0 855.4 855.4 858.1 859.8 862.0 861.7 862.6 859.2 MAX. QFE PRESSURE IN HPA 864.6 869.0 867.5 866.0 860.2 862.0 861.3 862.5 866.0 869.6 868.6 866.6 869.6 DAY 17 9 1 1 13 2 29 5 22 10 2 9 MIN. QFE PRESSURE IN HPA 856.8 846.2 848.5 852.7 850.8 849.4 849.8 851.4 854.8 857.0 850.5 855.4 846.2 DAY 19 21 25 12 30 18 18 27 5 31 18 5 MEAN QNH PRESSURE IN HPA 1021.8 1019.1 1018.8 1017.8 1016.3 1014.5 1014.5 1017.6 1019.6 1022.1 1021.8 1022.8 1018.9 MAX. QNH PRESSURE IN HPA 1025.1 1030.2 1028.4 1026.7 1020.0 1022.1 1021.3 1022.7 1026.7 1030.8 1029.7 1027.4 1030.8 DAY 17 9 1 1 13 2 29 5 22 10 2 9 MIN. QNH PRESSURE IN HPA 1016.1 1004.0 1006.6 1011.4 1009.3 1007.6 1008.1 1009.9 1013.8 1016.4 1008.9 1014.5 1004.0 DAY 19 21 25 12 30 18 18 27 5 31 18 5 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 860.8 858.2 857.6 857.0 855.7 853.9 853.9 856.4 858.3 860.5 860.8 861.7 857.9 MAX. QFE PRESSURE IN HPA 863.5 868.2 866.2 864.0 859.0 860.0 859.8 860.4 864.0 867.9 867.1 866.0 868.2 DAY 29 9 1 1 13 2 29 14 22 10 2 9 MIN. QFE PRESSURE IN HPA 856.4 843.4 846.8 850.0 850.1 848.0 849.0 850.6 853.0 855.8 850.4 855.4 843.4 DAY 19 21 25 12 30 18 10 27 5 31 18 5 MEAN QNH PRESSURE IN HPA 1020.8 1017.7 1017.0 1016.3 1014.9 1012.8 1012.9 1015.6 1017.9 1020.4 1020.8 1021.8 1017.4 MAX. QNH PRESSURE IN HPA 1023.8 1029.2 1026.9 1024.4 1018.7 1019.8 1019.6 1020.3 1024.4 1028.9 1028.0 1026.7 1029.2 DAY 29 9 1 1 13 2 29 14 22 10 2 9 MIN. QNH PRESSURE IN HPA 1015.7 1000.8 1004.7 1008.3 1008.4 1006.0 1007.2 1009.0 1011.8 1015.0 1008.8 1014.5 1000.8 DAY 19 21 25 12 30 18 10 27 5 31 18 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 861.3 858.4 857.7 856.7 855.3 853.2 853.1 855.8 858.0 860.4 861.1 862.1 857.7 MAX. QFE PRESSURE IN HPA 864.2 868.2 866.5 864.0 858.4 859.2 858.5 859.9 863.9 867.8 866.8 866.5 868.2 DAY 29 9 1 1 16 2 29 14 22 10 2 9 MIN. QFE PRESSURE IN HPA 857.5 844.6 847.8 850.0 850.0 847.6 847.4 850.6 852.7 855.6 850.4 856.2 844.6 DAY 19 21 25 12 29 6 10 27 5 31 18 5 MEAN QNH PRESSURE IN HPA 1021.3 1018.0 1017.1 1016.1 1014.4 1012.0 1011.9 1015.0 1017.5 1020.2 1021.0 1022.2 1017.2 MAX. QNH PRESSURE IN HPA 1024.6 1029.2 1027.3 1024.4 1018.0 1018.9 1018.1 1019.7 1024.3 1028.8 1027.6 1027.3 1029.2 DAY 29 9 1 1 16 2 29 14 22 10 2 9 MIN. QNH PRESSURE IN HPA 1016.9 1002.1 1005.8 1008.3 1008.3 1005.6 1005.3 1009.0 1011.4 1014.8 1008.8 1015.5 1002.1 DAY 19 21 25 12 29 6 10 27 5 31 18 5 MEAN QFF PRESSURE IN HPA 1023.2 1018.1 1013.2 1008.3 1004.3 999.2 998.1 1001.4 1006.6 1012.9 1018.2 1021.3 1010.4 MAX. QFF PRESSURE IN HPA 1030.4 1030.3 1026.2 1016.5 1010.1 1010.7 1004.9 1007.9 1016.6 1022.2 1028.3 1028.2 1030.4 DAY 29 9 11 1 11 12 29 14 21 10 20 22 MIN. QFF PRESSURE IN HPA 1017.8 1001.0 1002.3 1000.2 996.3 991.1 989.9 995.3 998.4 1005.9 1005.6 1015.5 989.9 DAY 4 21 25 12 29 6 10 24 5 1 18 20 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 JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.6 8.6 13.1 14.7 22.1 28.0 30.3 31.4 28.7 23.0 12.1 3.4 18.3 MINIMUN AIR TEMPERATURE (C) 1.4 4.0 7.9 9.3 15.1 21.5 24.4 25.7 22.9 18.0 8.2 0.7 13.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 3 17 29 31 26 5 0 0 111 DAYS WITH MINIMUM TEMP. <=-4 2 0 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH FREEZING MIN.<= 0 18 6 0 0 0 0 0 0 0 0 0 17 41 TEMPERATURE RECORDS LOWEST(C) -4.2 -2.0 2.0 2.6 8.0 16.0 20.0 21.8 18.8 11.0 1.2 -3.4 -4.2 DAY 14 17 7 3 5 8 30 14 30 31 29 23 MAXIMUM AIR TEMPERATURE (C) 7.3 12.1 16.9 18.0 25.6 31.5 34.0 34.9 32.2 26.3 15.2 5.5 21.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 6 22 31 31 27 5 0 0 122 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 15.0 17.0 23.2 24.8 33.2 36.0 39.0 38.6 34.5 31.2 21.2 11.0 39.0 DAY 1 26 27 29 29 13 19 10 3 3 11 8 DIF. BETWEEN (MAX.-MIN.) (C) 5.9 8.1 9.0 8.7 10.5 10.0 9.6 9.2 9.3 8.3 7.0 4.8 8.3 MEAN DAILY TEMP. (MDT) (C) 4.3 8.0 12.4 13.6 20.4 26.5 29.2 30.3 27.5 22.2 11.7 3.1 17.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 43.6 164.6 253.9 288.8 195.4 65.9 0.0 0.0 1012.3 HEATING DEG. DAYS(BASE 18 0C) 423.2 278.6 175.1 134.6 24.4 0.0 0.0 0.0 0.0 5.1 188.3 461.4 1690.7 DEWPOINT (MEAN C) -2.9 -4.2 -4.0 2.8 1.9 2.3 8.2 9.3 0.3 2.1 0.4 -4.5 1.0 MIXING RATIO (G/KG) 3.73 3.36 3.59 5.71 5.26 5.39 8.13 8.79 4.69 5.27 4.74 3.50 5.18 VAPOUR PRESSURE (HPA) 5.13 4.62 4.91 7.79 7.18 7.34 11.04 11.92 6.44 7.24 6.52 4.81 7.08 SATURATION DEF. (HPA) 3.68 6.93 10.64 9.47 20.43 31.19 33.02 34.95 33.51 21.57 8.04 3.13 18.05 RELATIVE HUMIDITY (MEAN %) 62 43 34 50 29 20 27 27 17 27 49 61 37 RELATIVE HUMIDITY (MAX. %) 77 60 51 66 42 31 38 34 26 37 63 72 50 RELATIVE HUMIDITY (MIN. %) 49 32 24 38 21 14 21 22 13 21 38 51 29 RELATIVE HUMIDITY (MEAN% 03UTC) 72 57 48 62 41 31 38 34 26 35 58 68 48 RELATIVE HUMIDITY (MEAN% 09UTC) 57 37 28 46 27 18 24 26 14 25 43 56 33 RELATIVE HUMIDITY (MEAN% 15UTC) 61 39 32 45 25 16 22 24 15 28 52 62 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 49.2 5.2 37.0 120.4 13.6 0.0 10.5 0.0 0.0 2.0 40.2 101.2 379.3 DAYS WITH PRECIPITATION >=10 2 0 1 6 0 0 0 0 0 0 2 4 15 DAYS WITH PRECIPITATION >= 5 4 0 2 6 1 0 1 0 0 0 3 7 24 DAYS WITH PRECIPITATION >= 1 6 2 4 11 3 0 3 0 0 2 7 13 51 DAYS WITH PRECIPITATION 10 4 10 16 5 0 4 0 0 2 13 16 80 GREATEST DAILY PRECIPITATION 21.0 3.0 27.3 29.0 9.0 0.0 7.0 0.0 0.0 1.0 15.0 22.3 29.0 DAY 12 20 19 3 4 ** 30 ** ** 30 26 9 DAY WITH THUNDER STORM 0 0 1 5 2 0 3 0 0 0 0 2 13 DAYS WITH SNOW OR SLEET 4 2 0 0 0 0 0 0 0 0 0 7 13 DAYS WITH DUST 0 1 0 0 0 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 180 180 180 270 270 180 180 180 180 180 180 180 180 PREVAILING WIND SPEED(KNOTS) 6.4 7.8 7.3 9.7 15.0 8.3 8.0 6.8 6.5 7.5 6.6 6.0 7.4 PREVAILING WIND PERCENT 18.7 20.7 16.8 22.7 21.9 31.3 42.6 29.0 28.0 27.7 16.7 12.9 21.9 CALMS PERCENT OF WIND 47.1 35.0 39.4 41.3 22.6 24.0 21.3 25.8 27.3 31.6 49.3 62.6 35.6 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 222 237 222 267 237 220 172 186 204 196 215 228 216 VECTOR WIND MAGNITUDE(KNOTS) 1.9 2.6 3.0 3.5 4.6 4.2 4.6 3.1 3.4 2.7 1.7 1.5 2.7 WIND STEADINESES (MEAN %) 48.7 47.3 57.7 64.8 56.1 58.3 75.4 63.3 68.0 51.9 48.6 55.6 51.9 WIND SPEED (MEAN KNOTS) 3.9 5.5 5.2 5.4 8.2 7.2 6.1 4.9 5.0 5.2 3.5 2.7 5.2 FASTEST WIND DIRECTION 220 300 220 280 300 180 120 70 70 170 320 300 280 FASTEST WIND SPEED (KNOTS) 37 31 35 43 39 35 37 21 27 31 33 31 43 DAY 8 25 15 21 11 7 24 6 21 22 25 26 DAYS WITH SKY CLEAR (0-2)/8 11 13 14 6 18 28 26 29 27 21 15 9 217 DAYS WITH P.CLOUDY (3-6)/8 15 11 14 14 9 2 5 2 3 9 7 8 99 DAYS WITH CLOUDY (7-8)/8 5 4 3 10 4 0 0 0 0 1 8 14 49 DAYS WITH VISIBILITY =< 2 KM 8 2 0 2 0 0 0 0 0 0 0 12 24 DURATION OF SUNSHINE HOURS 160.8 219.2 214.1 172.7 305.2 350.9 362.1 361.1 318.5 275.7 178.0 125.8 3044.1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 860.6 859.7 858.4 856.0 856.6 855.4 856.2 855.2 859.9 862.0 862.8 859.3 858.5 MAX. QFE PRESSURE IN HPA 868.2 868.2 871.0 864.8 862.4 863.5 861.4 861.0 865.2 867.7 870.4 870.1 871.0 DAY-HOUR 26- 6 6- 6 11- 6 1- 6 17- 6 25- 6 29- 6 31- 6 21- 6 10- 6 18- 6 3- 6 MIN. QFE PRESSURE IN HPA 852.1 851.2 850.0 846.6 851.1 847.1 848.8 849.2 855.1 856.4 855.6 847.1 846.6 DAY-HOUR 8- 3 25-12 22-15 3-12 12-15 20-15 24-15 17-15 10-12 21-12 13-12 21-15 MEAN QNH PRESSURE IN HPA 1020.5 1019.4 1018.0 1015.2 1016.0 1014.5 1015.5 1014.3 1019.7 1022.1 1023.0 1019.0 1018.1 MAX. QNH PRESSURE IN HPA 1029.2 1029.2 1032.4 1025.3 1022.6 1023.8 1021.4 1021.0 1025.8 1028.7 1031.8 1031.4 1032.4 DAY-HOUR 26- 6 6- 6 11- 6 1- 6 17- 6 25- 6 29- 6 31- 6 21- 6 10- 6 18- 6 3- 6 MIN. QNH PRESSURE IN HPA 1010.7 1009.7 1008.3 1004.4 1009.6 1005.0 1007.0 1007.4 1014.2 1015.7 1014.8 1005.0 1004.4 DAY-HOUR 8- 3 25-12 22-15 3-12 12-15 20-15 24-15 17-15 10-12 21-12 13-12 21-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 860.4 859.4 858.5 856.2 857.0 856.1 856.9 855.7 860.3 862.2 862.8 859.1 858.7 MAX. QFE PRESSURE IN HPA 866.6 867.0 869.8 863.6 861.8 862.6 860.7 860.1 864.4 867.0 868.7 868.3 869.8 DAY 26 6 11 1 18 25 30 30 22 11 18 3 MIN. QFE PRESSURE IN HPA 852.1 853.0 852.6 847.5 852.8 849.5 852.1 850.7 856.4 857.4 856.4 848.9 847.5 DAY 8 27 21 4 13 20 25 18 11 22 12 22 MEAN QNH PRESSURE IN HPA 1020.3 1019.1 1018.1 1015.4 1016.4 1015.4 1016.2 1014.9 1020.1 1022.4 1023.0 1018.8 1018.3 MAX. QNH PRESSURE IN HPA 1027.4 1027.9 1031.1 1024.0 1021.9 1022.8 1020.6 1019.9 1024.9 1027.9 1029.8 1029.3 1031.1 DAY 26 6 11 1 18 25 30 30 22 11 18 3 MIN. QNH PRESSURE IN HPA 1010.7 1011.8 1011.3 1005.5 1011.5 1007.8 1010.7 1009.1 1015.7 1016.8 1015.7 1007.1 1005.5 DAY 8 27 21 4 13 20 25 18 11 22 12 22 MEAN QFF PRESSURE IN HPA 1021.7 1018.3 1014.7 1010.4 1007.5 1003.1 1002.5 1000.7 1008.0 1013.4 1020.1 1020.8 1011.8 MAX. QFF PRESSURE IN HPA 1030.2 1028.9 1030.0 1021.3 1014.3 1011.5 1008.6 1006.8 1014.2 1017.6 1028.6 1031.5 1031.5 DAY 26 19 11 1 14 25 30 31 30 31 19 5 MIN. QFF PRESSURE IN HPA 1009.0 1007.7 1004.6 1003.8 1000.5 994.3 996.5 994.5 1003.3 1008.9 1008.8 1008.6 994.3 DAY 8 27 28 19 20 20 25 18 11 22 12 22 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 861.6 860.8 859.5 856.9 857.7 856.6 857.6 856.6 861.2 863.2 863.9 860.3 859.7 MAX. QFE PRESSURE IN HPA 868.2 868.2 871.0 864.8 862.4 863.5 861.4 861.0 865.2 867.7 870.4 870.1 871.0 DAY 26 6 11 1 17 25 29 31 21 10 18 3 MIN. QFE PRESSURE IN HPA 853.1 853.8 853.2 847.5 853.8 850.0 852.2 851.2 857.5 858.9 856.8 850.6 847.5 DAY 8 25 22 4 20 20 24 17 10 22 12 22 MEAN QNH PRESSURE IN HPA 1021.6 1020.7 1019.2 1016.3 1017.2 1015.9 1017.0 1015.9 1021.2 1023.5 1024.3 1020.2 1019.4 MAX. QNH PRESSURE IN HPA 1029.2 1029.2 1032.4 1025.3 1022.6 1023.8 1021.4 1021.0 1025.8 1028.7 1031.8 1031.4 1032.4 DAY 26 6 11 1 17 25 29 31 21 10 18 3 MIN. QNH PRESSURE IN HPA 1011.9 1012.7 1012.0 1005.5 1012.7 1008.3 1010.9 1009.7 1016.9 1018.6 1016.1 1009.0 1005.5 DAY 8 25 22 4 20 20 24 17 10 22 12 22 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 860.8 860.2 858.9 856.3 857.2 856.0 856.9 855.9 860.5 862.3 862.9 859.4 858.9 MAX. QFE PRESSURE IN HPA 867.4 867.6 869.8 864.6 862.4 862.9 860.4 860.6 864.8 867.3 869.8 869.5 869.8 DAY 26 6 11 1 17 25 29 31 21 10 18 3 MIN. QFE PRESSURE IN HPA 853.1 852.4 850.3 846.9 852.6 849.5 851.0 850.8 856.7 858.0 855.7 849.2 846.9 DAY 8 25 28 4 20 21 24 17 10 22 12 21 MEAN QNH PRESSURE IN HPA 1020.8 1020.1 1018.5 1015.6 1016.6 1015.2 1016.2 1015.1 1020.4 1022.5 1023.1 1019.2 1018.6 MAX. QNH PRESSURE IN HPA 1028.3 1028.5 1031.1 1025.1 1022.6 1023.1 1020.3 1020.5 1025.3 1028.2 1031.1 1030.7 1031.1 DAY 26 6 11 1 17 25 29 31 21 10 18 3 MIN. QNH PRESSURE IN HPA 1011.9 1011.1 1008.7 1004.8 1011.3 1007.8 1009.5 1009.3 1016.0 1017.5 1014.9 1007.4 1004.8 DAY 8 25 28 4 20 21 24 17 10 22 12 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 859.9 858.9 857.5 855.5 855.8 854.5 855.3 854.3 859.0 861.0 862.0 858.6 857.7 MAX. QFE PRESSURE IN HPA 866.7 866.0 867.6 863.0 860.6 861.0 859.2 858.6 863.0 865.9 868.5 868.2 868.5 DAY 27 6 11 1 17 25 30 31 21 10 18 3 MIN. QFE PRESSURE IN HPA 853.1 851.2 850.8 846.6 851.7 847.6 849.6 849.6 855.1 856.4 855.6 847.5 846.6 DAY 8 25 21 3 12 20 24 17 10 21 13 21 MEAN QNH PRESSURE IN HPA 1019.7 1018.5 1017.0 1014.6 1015.0 1013.5 1014.4 1013.2 1018.7 1020.9 1022.1 1018.3 1017.2 MAX. QNH PRESSURE IN HPA 1027.5 1026.7 1028.5 1023.3 1020.5 1021.0 1018.9 1018.2 1023.3 1026.6 1029.6 1029.2 1029.6 DAY 27 6 11 1 17 25 30 31 21 10 18 3 MIN. QNH PRESSURE IN HPA 1011.9 1009.7 1009.3 1004.4 1010.3 1005.6 1007.9 1007.9 1014.2 1015.7 1014.8 1005.5 1004.4 DAY 8 25 21 3 12 20 24 17 10 21 13 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 JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 860.4 859.1 857.6 855.3 855.5 853.7 854.7 853.7 858.8 861.1 862.5 859.1 857.6 MAX. QFE PRESSURE IN HPA 867.2 866.4 867.0 862.6 860.0 859.8 858.6 858.2 862.9 866.2 869.3 868.4 869.3 DAY 27 6 11 1 17 24 29 31 29 10 18 3 MIN. QFE PRESSURE IN HPA 854.5 851.4 850.0 847.3 851.1 847.1 848.8 849.2 855.1 856.4 856.8 847.1 847.1 DAY 22 25 22 4 12 20 24 17 10 21 13 21 MEAN QNH PRESSURE IN HPA 1020.2 1018.7 1017.1 1014.4 1014.6 1012.6 1013.7 1012.6 1018.4 1021.1 1022.7 1018.8 1017.1 MAX. QNH PRESSURE IN HPA 1028.1 1027.2 1027.9 1022.8 1019.8 1019.6 1018.2 1017.8 1023.1 1026.9 1030.5 1029.5 1030.5 DAY 27 6 11 1 17 24 29 31 29 10 18 3 MIN. QNH PRESSURE IN HPA 1013.5 1009.9 1008.3 1005.2 1009.6 1005.0 1007.0 1007.4 1014.2 1015.7 1016.1 1005.0 1005.0 DAY 22 25 22 4 12 20 24 17 10 21 13 21 MEAN QFF PRESSURE IN HPA 1021.7 1017.9 1013.6 1009.3 1005.6 1000.4 1000.1 998.3 1006.4 1012.2 1019.9 1020.8 1010.5 MAX. QFF PRESSURE IN HPA 1030.4 1026.9 1027.4 1018.8 1011.7 1008.6 1005.9 1005.8 1013.2 1018.1 1029.4 1031.8 1031.8 DAY 14 19 11 1 2 24 30 31 30 31 18 14 MIN. QFF PRESSURE IN HPA 1012.1 1006.3 1004.4 1003.7 998.1 992.1 993.1 992.1 1001.9 1007.4 1010.8 1006.1 992.1 DAY 7 25 26 4 29 19 24 8 10 21 11 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 JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.1 6.1 9.2 16.1 20.6 27.8 32.9 30.1 25.7 21.9 10.8 5.2 17.7 MINIMUN AIR TEMPERATURE (C) 2.6 2.8 4.9 11.7 14.9 21.9 27.2 24.3 20.3 17.1 6.6 2.1 13.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 20 31 31 16 2 0 0 100 DAYS WITH MINIMUM TEMP. <=-4 0 1 1 0 0 0 0 0 0 0 0 1 3 DAYS WITH FREEZING MIN.<= 0 7 7 3 0 0 0 0 0 0 0 0 8 25 TEMPERATURE RECORDS LOWEST(C) -1.6 -4.0 -4.0 4.0 6.6 15.0 23.4 21.0 14.8 13.2 1.8 -4.0 -4.0 DAY 20 18 2 1 1 7 1 21 27 30 23 14 MAXIMUM AIR TEMPERATURE (C) 9.0 9.0 12.3 19.3 24.4 31.4 36.6 33.9 29.3 25.4 14.1 7.9 21.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 22 31 31 15 0 0 0 100 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 1 1 TEMPERATURE RECORDS HIGHEST(C) 15.4 13.6 18.0 27.2 30.0 36.6 40.4 36.4 34.0 29.4 20.0 15.0 40.4 DAY 13 9 25 7 18 23 17 12 7 10 1 17 DIF. BETWEEN (MAX.-MIN.) (C) 6.4 6.2 7.4 7.6 9.5 9.5 9.4 9.6 9.0 8.3 7.5 5.8 8.0 MEAN DAILY TEMP. (MDT) (C) 5.8 5.9 8.6 15.5 19.6 26.7 31.9 29.1 24.8 21.3 10.4 5.0 17.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 7.0 21.8 170.8 337.3 250.6 118.2 29.5 0.0 0.0 935.3 HEATING DEG. DAYS(BASE 18 0C) 377.1 338.4 290.4 103.9 20.4 0.0 0.0 0.0 0.0 2.3 228.2 401.9 1762.6 DEWPOINT (MEAN C) -4.1 -3.8 -2.6 4.1 3.5 5.7 9.2 8.1 4.8 1.9 -2.3 -1.9 1.9 MIXING RATIO (G/KG) 3.38 3.50 3.92 6.17 5.96 6.92 8.75 8.01 6.45 5.23 3.89 4.03 5.52 VAPOUR PRESSURE (HPA) 4.64 4.78 5.36 8.41 8.13 9.39 11.80 10.88 8.80 7.17 5.36 5.54 7.52 SATURATION DEF. (HPA) 5.10 4.84 6.59 10.87 16.83 28.79 38.90 32.44 25.08 19.59 7.99 3.55 16.71 RELATIVE HUMIDITY (MEAN %) 51 53 47 49 35 26 24 26 28 28 42 63 39 RELATIVE HUMIDITY (MAX. %) 63 69 65 63 50 36 33 36 37 39 57 74 52 RELATIVE HUMIDITY (MIN. %) 40 41 35 39 25 19 19 21 22 20 32 52 30 RELATIVE HUMIDITY (MEAN% 03UTC) 57 65 60 60 48 36 33 36 37 37 54 69 49 RELATIVE HUMIDITY (MEAN% 09UTC) 47 49 42 47 32 23 23 24 25 23 35 57 36 RELATIVE HUMIDITY (MEAN% 15UTC) 51 51 44 43 31 21 20 23 26 30 44 63 37 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 39.8 73.5 62.8 119.1 21.1 0.0 0.0 1.0 0.0 17.4 13.1 55.1 402.9 DAYS WITH PRECIPITATION >=10 2 4 4 5 0 0 0 0 0 0 1 0 16 DAYS WITH PRECIPITATION >= 5 4 5 4 6 2 0 0 0 0 2 1 4 28 DAYS WITH PRECIPITATION >= 1 5 7 7 11 3 0 0 1 0 3 2 11 50 DAYS WITH PRECIPITATION 6 11 12 14 6 0 0 1 0 5 6 15 76 GREATEST DAILY PRECIPITATION 15.0 21.2 19.3 27.0 9.0 0.0 0.0 1.0 0.0 7.0 12.0 9.0 27.0 DAY 29 14 13 1 28 ** ** 21 ** 28 30 27 DAY WITH THUNDER STORM 0 0 2 4 4 0 0 0 0 4 0 0 14 DAYS WITH SNOW OR SLEET 3 4 3 0 0 0 0 0 0 0 0 5 15 DAYS WITH DUST 0 0 0 0 1 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 225 270 270 270 180 180 180 180 180 180 180 180 180 PREVAILING WIND SPEED(KNOTS) 5.7 10.0 10.4 10.6 8.5 8.0 7.1 7.9 7.1 6.6 6.3 6.2 7.2 PREVAILING WIND PERCENT 13.5 12.1 19.4 18.7 23.9 30.7 46.5 56.8 49.3 33.5 32.7 20.6 27.2 CALMS PERCENT OF WIND 64.5 60.0 40.6 38.0 18.7 24.0 20.6 15.5 15.3 21.3 32.7 47.7 33.1 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 253 256 255 250 219 192 173 183 185 210 210 218 209 VECTOR WIND MAGNITUDE(KNOTS) 1.5 2.1 2.6 2.4 3.2 3.4 3.9 4.9 4.2 3.0 2.8 1.9 2.6 WIND STEADINESES (MEAN %) 65.2 61.8 52.0 50.0 45.1 58.6 68.4 76.6 72.4 52.6 60.9 54.3 52.0 WIND SPEED (MEAN KNOTS) 2.3 3.4 5.0 4.8 7.1 5.8 5.7 6.4 5.8 5.7 4.6 3.5 5.0 FASTEST WIND DIRECTION 300 250 330 270 200 250 130 260 250 270 270 290 330 FASTEST WIND SPEED (KNOTS) 16 19 39 29 39 31 21 37 25 33 29 35 39 DAY 6 5 13 30 19 4 18 22 13 2 20 10 DAYS WITH SKY CLEAR (0-2)/8 12 6 7 4 13 24 24 30 28 18 15 8 189 DAYS WITH P.CLOUDY (3-6)/8 10 11 16 11 15 6 7 1 2 7 8 14 108 DAYS WITH CLOUDY (7-8)/8 9 11 8 15 3 0 0 0 0 6 7 9 68 DAYS WITH VISIBILITY =< 2 KM 5 5 0 1 0 0 0 0 0 0 0 9 20 DURATION OF SUNSHINE HOURS 155.3 132.5 201.6 159.2 280.3 342.0 345.3 363.7 316.7 258.2 202.1 135.9 2892.8 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 859.2 855.7 856.6 857.7 858.5 854.2 851.7 856.5 858.3 860.4 862.0 862.3 857.7 MAX. QFE PRESSURE IN HPA 866.1 861.8 866.2 864.0 866.5 859.5 858.5 861.1 866.2 866.5 871.9 871.4 871.9 DAY-HOUR 12- 6 12- 6 2- 6 8- 6 2- 6 7- 6 4- 6 30- 6 23- 6 15- 6 25- 6 12- 6 MIN. QFE PRESSURE IN HPA 846.5 845.8 843.6 851.9 852.2 847.0 847.0 851.7 851.9 853.8 854.0 852.9 843.6 DAY-HOUR 28-15 19- 3 26-12 27-15 28-15 30-15 30-15 1- 3 7-12 27-15 14-12 6-12 MEAN QNH PRESSURE IN HPA 1018.9 1014.8 1015.9 1017.2 1018.1 1013.2 1010.3 1015.8 1017.9 1020.3 1022.1 1022.4 1017.2 MAX. QNH PRESSURE IN HPA 1026.8 1021.9 1026.9 1024.4 1027.3 1019.2 1018.1 1021.1 1026.9 1027.3 1033.5 1032.9 1033.5 DAY-HOUR 12- 6 12- 6 2- 6 8- 6 2- 6 7- 6 4- 6 30- 6 23- 6 15- 6 25- 6 12- 6 MIN. QNH PRESSURE IN HPA 1004.3 1003.5 1001.0 1010.5 1010.9 1004.9 1004.9 1010.3 1010.5 1012.7 1012.9 1011.7 1001.0 DAY-HOUR 28-15 19- 3 26-12 27-15 28-15 30-15 30-15 1- 3 7-12 27-15 14-12 6-12 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 858.9 855.6 856.7 857.7 859.0 854.8 852.1 857.2 858.9 860.6 861.9 862.0 858.0 MAX. QFE PRESSURE IN HPA 864.6 861.5 865.2 863.4 865.4 858.3 858.3 860.4 865.2 865.1 870.3 870.2 870.3 DAY 12 13 3 8 2 7 4 4 27 16 25 12 MIN. QFE PRESSURE IN HPA 850.0 845.8 849.0 853.7 853.0 848.5 847.9 851.7 853.5 855.3 855.7 855.3 845.8 DAY 29 19 13 21 8 30 1 1 7 27 14 6 MEAN QNH PRESSURE IN HPA 1018.6 1014.8 1016.0 1017.2 1018.7 1013.9 1010.7 1016.6 1018.6 1020.5 1022.0 1022.1 1017.5 MAX. QNH PRESSURE IN HPA 1025.1 1021.5 1025.8 1023.7 1026.0 1017.9 1017.9 1020.3 1025.8 1025.7 1031.6 1031.5 1031.6 DAY 12 13 3 8 2 7 4 4 27 16 25 12 MIN. QNH PRESSURE IN HPA 1008.3 1003.5 1007.2 1012.6 1011.8 1006.6 1005.9 1010.3 1012.4 1014.4 1014.9 1014.4 1003.5 DAY 29 19 13 21 8 30 1 1 7 27 14 6 MEAN QFF PRESSURE IN HPA 1019.2 1015.0 1014.5 1011.4 1010.7 1001.6 995.6 1003.2 1007.8 1012.1 1019.8 1023.1 1011.2 MAX. QFF PRESSURE IN HPA 1026.5 1022.8 1029.8 1017.8 1021.3 1009.2 1003.6 1007.5 1018.2 1016.7 1032.4 1035.8 1035.8 DAY 23 13 2 19 2 7 4 4 27 16 25 12 MIN. QFF PRESSURE IN HPA 1008.0 1006.3 1004.9 1004.6 1003.7 992.6 990.9 995.7 999.6 1005.6 1009.9 1013.0 990.9 DAY 16 19 13 28 8 30 30 1 7 27 14 19 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 860.2 856.6 857.7 858.7 859.7 855.5 852.8 857.9 859.6 861.6 863.1 863.4 858.9 MAX. QFE PRESSURE IN HPA 866.1 861.8 866.2 864.0 866.5 859.5 858.5 861.1 866.2 866.5 871.9 871.4 871.9 DAY 12 12 2 8 2 7 4 30 23 15 25 12 MIN. QFE PRESSURE IN HPA 852.1 846.4 849.1 854.2 854.0 849.6 849.0 852.3 854.1 856.4 856.1 854.4 846.4 DAY 29 19 13 14 8 30 1 1 7 27 14 6 MEAN QNH PRESSURE IN HPA 1020.1 1015.9 1017.1 1018.3 1019.4 1014.6 1011.6 1017.4 1019.4 1021.7 1023.3 1023.7 1018.6 MAX. QNH PRESSURE IN HPA 1026.8 1021.9 1026.9 1024.4 1027.3 1019.2 1018.1 1021.1 1026.9 1027.3 1033.5 1032.9 1033.5 DAY 12 12 2 8 2 7 4 30 23 15 25 12 MIN. QNH PRESSURE IN HPA 1010.7 1004.2 1007.3 1013.2 1012.9 1007.9 1007.2 1011.0 1013.0 1015.7 1015.3 1013.4 1004.2 DAY 29 19 13 14 8 30 1 1 7 27 14 6 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 859.5 856.1 857.0 858.1 859.0 854.8 852.3 857.1 858.8 860.7 862.1 862.4 858.2 MAX. QFE PRESSURE IN HPA 865.3 861.8 865.6 862.4 865.8 858.7 858.1 860.2 865.3 865.6 870.5 870.4 870.5 DAY 12 12 2 3 2 7 3 4 27 15 25 12 MIN. QFE PRESSURE IN HPA 850.7 846.2 847.4 853.8 853.6 849.3 848.7 853.4 853.5 855.4 854.8 854.2 846.2 DAY 28 19 26 28 8 30 26 1 7 27 14 6 MEAN QNH PRESSURE IN HPA 1019.2 1015.3 1016.3 1017.7 1018.7 1013.9 1011.0 1016.5 1018.5 1020.6 1022.2 1022.6 1017.7 MAX. QNH PRESSURE IN HPA 1025.9 1021.9 1026.2 1022.6 1026.5 1018.3 1017.6 1020.0 1025.9 1026.2 1031.9 1031.8 1031.9 DAY 12 12 2 3 2 7 3 4 27 15 25 12 MIN. QNH PRESSURE IN HPA 1009.1 1004.0 1005.3 1012.7 1012.5 1007.5 1006.8 1012.2 1012.4 1014.5 1013.8 1013.2 1004.0 DAY 28 19 26 28 8 30 26 1 7 27 14 6 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 858.4 854.9 855.8 857.1 857.6 853.4 851.0 855.5 857.3 859.5 861.1 861.5 856.9 MAX. QFE PRESSURE IN HPA 864.0 860.4 865.8 862.5 864.1 857.3 856.8 858.2 863.8 864.8 870.4 868.6 870.4 DAY 12 6 2 8 2 3 3 30 27 15 25 12 MIN. QFE PRESSURE IN HPA 846.7 846.2 843.6 853.6 852.7 847.9 847.8 852.4 851.9 854.3 854.0 852.9 843.6 DAY 28 19 26 14 23 30 26 1 7 26 14 6 MEAN QNH PRESSURE IN HPA 1018.0 1013.9 1014.9 1016.5 1017.1 1012.2 1009.5 1014.7 1016.7 1019.2 1021.1 1021.6 1016.3 MAX. QNH PRESSURE IN HPA 1024.4 1020.3 1026.5 1022.7 1024.5 1016.7 1016.1 1017.8 1024.2 1025.3 1031.8 1029.7 1031.8 DAY 12 6 2 8 2 3 3 30 27 15 25 12 MIN. QNH PRESSURE IN HPA 1004.5 1004.0 1001.0 1012.5 1011.4 1005.9 1005.8 1011.1 1010.5 1013.3 1012.9 1011.7 1001.0 DAY 28 19 26 14 23 30 26 1 7 26 14 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 859.0 855.2 855.8 856.9 857.4 852.6 850.2 854.9 856.9 859.6 861.7 862.2 856.9 MAX. QFE PRESSURE IN HPA 864.2 861.2 865.4 862.7 863.5 856.8 856.0 857.6 863.4 864.8 870.2 869.3 870.2 DAY 11 6 2 8 2 3 3 30 26 15 25 11 MIN. QFE PRESSURE IN HPA 846.5 846.6 845.4 851.9 852.2 847.0 847.0 851.8 851.9 853.8 855.3 854.0 845.4 DAY 28 19 26 27 28 30 30 1 7 27 14 6 MEAN QNH PRESSURE IN HPA 1018.7 1014.3 1014.9 1016.3 1016.9 1011.3 1008.6 1014.0 1016.2 1019.4 1021.7 1022.3 1016.2 MAX. QNH PRESSURE IN HPA 1024.6 1021.2 1026.0 1022.9 1023.8 1016.1 1015.2 1017.1 1023.7 1025.3 1031.5 1030.5 1031.5 DAY 11 6 2 8 2 3 3 30 26 15 25 11 MIN. QNH PRESSURE IN HPA 1004.3 1004.4 1003.0 1010.5 1010.9 1004.9 1004.9 1010.4 1010.5 1012.7 1014.4 1012.9 1003.0 DAY 28 19 26 27 28 30 30 1 7 27 14 6 MEAN QFF PRESSURE IN HPA 1019.2 1014.5 1013.3 1010.4 1008.8 999.0 993.4 1000.6 1005.5 1010.9 1019.7 1023.3 1009.9 MAX. QFF PRESSURE IN HPA 1026.2 1023.0 1029.9 1015.5 1019.4 1006.6 1001.2 1004.7 1016.2 1016.7 1031.9 1034.9 1034.9 DAY 22 12 2 18 2 6 3 30 27 23 25 12 MIN. QFF PRESSURE IN HPA 1005.3 1005.2 1000.0 1001.9 1002.2 991.6 989.4 996.2 997.2 1005.2 1010.2 1012.5 989.4 DAY 28 20 26 27 28 30 18 1 7 26 1 6 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 JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1991-2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.1 6.1 9.7 17.0 21.9 28.1 31.0 30.6 26.2 19.4 11.6 6.2 17.7 MINIMUN AIR TEMPERATURE (C) 0.7 2.1 5.3 11.6 15.9 21.6 25.0 24.6 20.4 14.3 7.5 2.9 12.7 DAYS WITH MINIMUM TEMP. >=21 0.0 0.0 0.0 0.0 2.7 19.4 29.8 29.3 14.8 0.8 0.0 0.0 96.8 DAYS WITH MINIMUM TEMP. <=-4 3.0 1.3 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.7 5.5 DAYS WITH FREEZING MIN.<= 0 14.2 8.4 3.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.8 6.5 33.1 TEMPERATURE RECORDS LOWEST(C) -8.0 -8.0 -6.0 0.5 4.5 11.8 17.0 15.0 11.0 6.8 -1.8 -7.2 -8.0 YEAR-DAY 92-28 91-13 92-11 97-12 92- 5 94- 5 99-15 92-31 92- 2 93- 8 95-26 94- 7 92-28 MAXIMUM AIR TEMPERATURE (C) 6.8 9.2 13.0 20.4 25.4 31.6 34.5 34.1 29.7 22.7 14.6 8.8 20.9 DAYS WITH MAXIMUM TEMP. >=30 0.0 0.0 0.0 0.0 3.7 22.7 30.4 29.7 16.3 0.5 0.0 0.0 103.3 DAYS WITH MAXIMUM TEMP. <= 0 1.2 0.3 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 2.0 TEMPERATURE RECORDS HIGHEST(C) 16.2 17.2 24.4 29.0 34.6 38.0 41.0 38.8 35.4 31.2 23.0 17.6 41.0 YEAR-DAY 0- 1 1-28 1-31 94-22 99-31 1-27 95-16 97-15 0- 8 2- 3 1- 6 98-11 95-16 DIF. BETWEEN (MAX.-MIN.) (C) 6.1 7.1 7.7 8.8 9.5 10.0 9.5 9.5 9.3 8.4 7.1 5.9 8.2 MEAN DAILY TEMP. (MDT) (C) 3.7 5.6 9.1 16.0 20.6 26.6 29.7 29.4 25.0 18.5 11.1 5.9 16.8 STANDARD DEVIATION OF MDT(C) 1.91 1.79 2.36 1.82 1.90 0.98 1.15 1.15 1.41 1.85 1.80 2.22 1.69 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 4.7 41.5 169.7 270.9 259.1 126.3 13.7 0.0 0.0 885.9 HEATING DEG. DAYS(BASE 18 0C) 442.2 349.2 275.6 82.1 18.3 0.2 0.0 0.0 0.4 33.9 207.8 376.6 1786.3 DEWPOINT (MEAN C) -4.4 -5.1 -3.5 0.1 2.1 3.3 6.9 5.4 2.4 1.0 -0.8 -2.4 0.4 MIXING RATIO (G/KG) 3.36 3.21 3.72 4.82 5.47 6.02 7.65 6.90 5.65 5.02 4.42 3.95 5.02 VAPOUR PRESSURE (HPA) 4.62 4.40 5.10 6.59 7.47 8.19 10.37 9.40 7.72 6.90 6.08 5.43 6.86 SATURATION DEF. (HPA) 3.86 5.39 7.53 13.51 19.83 30.70 35.34 35.39 27.16 16.34 8.08 4.34 17.29 RELATIVE HUMIDITY (MEAN %) 58 48 44 36 30 23 24 22 24 32 46 58 37 RELATIVE HUMIDITY (MAX. %) 70 63 60 50 43 33 33 30 33 44 59 71 49 RELATIVE HUMIDITY (MIN. %) 47 37 34 26 22 16 18 17 18 25 36 47 29 RELATIVE HUMIDITY (MEAN% 03UTC) 66 59 55 47 41 32 32 30 32 43 56 67 47 RELATIVE HUMIDITY (MEAN% 09UTC) 53 45 41 33 28 21 22 21 21 29 41 53 34 RELATIVE HUMIDITY (MEAN% 15UTC) 58 46 41 32 27 18 20 19 22 32 48 59 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 41.8 36.5 64.0 41.1 20.1 5.3 2.2 1.9 0.9 13.7 33.1 47.8 308.4 DAYS WITH PRECIPITATION >=10 1.5 1.6 2.5 1.4 0.5 0.2 0.0 0.1 0.0 0.5 1.2 1.5 11.0 DAYS WITH PRECIPITATION >= 5 3.5 2.2 4.2 2.3 1.2 0.3 0.2 0.1 0.1 0.8 2.5 3.3 20.7 DAYS WITH PRECIPITATION >= 1 6.2 4.8 7.8 5.2 4.2 1.2 0.5 0.4 0.2 2.3 4.5 6.2 43.5 DAYS WITH PRECIPITATION 9.5 9.0 11.5 9.4 8.1 2.8 1.2 0.8 1.3 4.6 8.1 9.8 76.1 GREATEST DAILY PRECIPITATION 22.0 37.0 60.0 31.0 21.8 18.0 7.0 16.0 5.0 23.0 37.0 41.0 60.0 YEAR-DAY 93- 8 94- 1 96- 2 95-24 92- 2 1-12 2-30 98- 4 1-20 94- 4 94-26 98- 4 96 DAY WITH THUNDER STORM 0.2 0.0 0.8 2.0 1.8 1.0 0.5 0.1 0.2 1.1 0.2 0.2 8.1 DAYS WITH SNOW OR SLEET 4.8 3.2 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.3 2.8 13.2 DAYS WITH DUST 0.2 0.4 0.2 0.7 0.6 0.3 0.2 0.2 0.2 0.0 0.2 0.1 3.3 WIND DIRECTION (PREVAILING) 180 180 180 225 225 180 180 180 180 180 180 180 180 PREVAILING WIND SPEED(KNOTS) 4.9 5.6 5.9 8.8 8.8 7.3 6.8 6.4 6.2 5.9 5.4 4.9 6.2 PREVAILING WIND PERCENT 19.2 21.9 18.9 20.5 20.0 31.7 41.1 44.9 37.3 33.2 26.0 22.1 27.9 CALMS PERCENT OF WIND 35.2 25.4 20.5 16.9 14.1 14.2 15.1 14.1 14.7 19.3 28.4 36.8 21.2 NO. OF WIND OBSERVATION 155.0 141.2 155.0 150.0 154.9 149.9 154.7 154.8 149.9 155.0 149.9 154.9 1825.2 VECTOR WIND DIRECTION (MEAN) 219 225 233 241 234 204 184 180 195 206 205 212 210 VECTOR WIND MAGNITUDE(KNOTS) 1.6 2.4 2.3 3.5 3.5 3.5 3.8 3.7 3.2 2.8 1.8 1.5 2.6 WIND STEADINESES (MEAN %) 45.7 48.0 41.1 52.2 50.0 55.6 67.9 69.8 60.4 54.9 42.9 45.5 50.0 WIND SPEED (MEAN KNOTS) 3.5 5.0 5.6 6.7 7.0 6.3 5.6 5.3 5.3 5.1 4.2 3.3 5.2 FASTEST WIND DIRECTION 320 250 190 320 300 190 360 190 360 280 240 290 190 FASTEST WIND SPEED (KNOTS) 39 45 45 49 47 56 43 39 39 43 41 35 56 YEAR-DAY 97-28 1-21 98-29 91-26 91-16 93- 3 96-18 98- 2 98-13 1-25 94-25 3-10 93 DAYS WITH SKY CLEAR (0-2)/8 13.7 12.2 12.1 10.5 15.9 25.3 25.4 27.6 27.2 20.2 13.9 10.7 214.7 DAYS WITH P.CLOUDY (3-6)/8 8.8 9.9 11.0 13.2 11.8 4.5 5.5 3.2 2.5 8.2 10.5 11.6 100.7 DAYS WITH CLOUDY (7-8)/8 8.5 6.2 7.9 6.3 3.2 0.2 0.1 0.2 0.3 2.6 5.6 8.7 49.8 DAYS WITH VISIBILITY =< 2 KM 5.5 2.3 1.2 0.4 0.3 0.1 0.2 0.1 0.2 0.2 1.5 7.2 19.2 DURATION OF SUNSHINE HOURS 155.8 173.9 197.1 216.0 279.3 341.6 345.6 347.0 307.5 253.7 179.7 144.3 2941.5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1991-2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 860.0 858.3 857.5 857.7 857.9 855.5 854.5 856.7 859.1 862.2 862.3 862.0 858.6 MAX. QFE PRESSURE IN HPA 872.3 871.3 871.0 870.3 867.2 864.9 864.1 865.3 870.5 871.0 874.6 871.6 874.6 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 93-23 0-30 92-31 94-23 95-27 96-18 99- 6 96-18 MIN. QFE PRESSURE IN HPA 844.7 843.4 843.6 846.6 846.0 845.5 846.3 848.1 850.0 851.7 849.9 847.1 843.4 YEAR-DAY 98-13 1-21 3-26 2- 3 99-20 99-25 95-16 94- 2 0- 1 96-27 94-26 2-21 1-21 MEAN QNH PRESSURE IN HPA 1019.8 1017.8 1017.0 1017.2 1017.4 1014.6 1013.5 1016.0 1018.8 1022.3 1022.4 1022.1 1018.2 MAX. QNH PRESSURE IN HPA 1033.9 1032.8 1032.4 1031.6 1028.1 1025.4 1024.5 1025.9 1031.9 1032.4 1036.6 1033.1 1036.6 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 93-23 0-30 92-31 94-23 95-27 96-18 99- 6 96-18 MIN. QNH PRESSURE IN HPA 1002.2 1000.8 1001.0 1004.4 1003.7 1003.2 1004.1 1006.1 1008.3 1010.3 1008.2 1005.0 1000.8 YEAR-DAY 98-13 1-21 3-26 2- 3 99-20 99-25 95-16 94- 2 0- 1 96-27 94-26 2-21 1-21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 860.0 858.4 857.8 858.0 858.3 856.1 855.2 857.3 859.6 862.5 862.4 862.0 859.0 MAX. QFE PRESSURE IN HPA 870.8 870.3 869.8 869.0 865.7 864.5 863.4 864.9 869.6 870.5 873.8 870.2 873.8 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 93-23 0-31 92-31 94-23 93-17 96-19 99- 6 96-19 MIN. QFE PRESSURE IN HPA 845.2 845.8 847.0 847.5 849.1 847.2 847.5 850.6 851.8 854.9 849.9 847.4 845.2 YEAR-DAY 98-13 3-19 92-31 2- 4 91-23 99-25 95-16 94- 2 0- 1 96-27 94-26 94- 4 98-13 MEAN QNH PRESSURE IN HPA 1019.9 1017.9 1017.2 1017.6 1017.9 1015.3 1014.3 1016.7 1019.4 1022.7 1022.6 1022.1 1018.6 MAX. QNH PRESSURE IN HPA 1032.2 1031.6 1031.1 1030.2 1026.4 1025.0 1023.7 1025.4 1030.8 1031.9 1035.7 1031.5 1035.7 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 93-23 0-31 92-31 94-23 93-17 96-19 99- 6 96-19 MIN. QNH PRESSURE IN HPA 1002.8 1003.5 1004.9 1005.5 1007.3 1005.1 1005.5 1009.0 1010.4 1014.0 1008.2 1005.3 1002.8 YEAR-DAY 98-13 3-19 92-31 2- 4 91-23 99-25 95-16 94- 2 0- 1 96-27 94-26 94- 4 98-13 MEAN QFF PRESSURE IN HPA 1021.7 1018.5 1015.6 1011.6 1009.2 1003.1 1000.3 1003.2 1008.5 1015.7 1020.0 1022.7 1012.5 MAX. QFF PRESSURE IN HPA 1035.7 1037.4 1034.6 1029.2 1022.0 1015.3 1010.6 1016.7 1023.9 1027.6 1036.0 1035.8 1037.4 YEAR-DAY 92-10 91-15 92-12 94- 5 92- 3 93-23 0-31 92-31 94-23 95-27 96-19 3-12 91-15 MIN. QFF PRESSURE IN HPA 1005.6 1004.4 999.1 1002.4 995.8 991.6 988.5 993.5 996.6 1004.8 1006.5 1004.7 988.5 YEAR-DAY 98-13 1-21 1-25 92-18 1-30 99-25 95-16 94- 2 0- 1 98- 1 1-18 94- 4 95-16 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1991-2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 861.1 859.4 858.7 858.9 859.0 856.7 855.8 858.1 860.5 863.5 863.4 863.1 859.8 MAX. QFE PRESSURE IN HPA 872.3 871.3 871.0 870.3 867.2 864.9 864.1 865.3 870.5 871.0 874.6 871.6 874.6 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 93-23 0-30 92-31 94-23 95-27 96-18 99- 6 96-18 MIN. QFE PRESSURE IN HPA 845.4 846.4 847.9 847.5 849.4 847.5 848.8 851.1 852.2 855.1 850.2 848.3 845.4 YEAR-DAY 98-13 3-19 92-31 2- 4 91-23 99-25 95-16 94- 2 0- 1 96-27 94-26 94- 4 98-13 MEAN QNH PRESSURE IN HPA 1021.0 1019.1 1018.4 1018.5 1018.7 1016.1 1015.0 1017.6 1020.4 1023.8 1023.7 1023.3 1019.6 MAX. QNH PRESSURE IN HPA 1033.9 1032.8 1032.4 1031.6 1028.1 1025.4 1024.5 1025.9 1031.9 1032.4 1036.6 1033.1 1036.6 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 93-23 0-30 92-31 94-23 95-27 96-18 99- 6 96-18 MIN. QNH PRESSURE IN HPA 1003.0 1004.2 1005.9 1005.5 1007.6 1005.5 1007.0 1009.6 1010.9 1014.2 1008.6 1006.4 1003.0 YEAR-DAY 98-13 3-19 92-31 2- 4 91-23 99-25 95-16 94- 2 0- 1 96-27 94-26 94- 4 98-13 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 860.1 858.6 858.0 858.1 858.3 856.0 855.1 857.2 859.6 862.4 862.4 862.0 859.0 MAX. QFE PRESSURE IN HPA 871.4 870.8 869.8 869.8 866.2 864.0 863.7 864.4 869.3 870.4 873.2 870.7 873.2 YEAR-DAY 99- 2 91-15 2-11 94- 5 98- 8 93-23 0-30 92-31 94-23 95-25 96-18 99- 6 96-18 MIN. QFE PRESSURE IN HPA 844.7 846.2 846.9 846.9 848.5 847.0 848.4 850.5 851.8 853.4 850.1 847.9 844.7 YEAR-DAY 98-13 1-21 97-25 2- 4 91-23 99-25 95-16 94- 2 96-22 96-27 94-26 94- 4 98-13 MEAN QNH PRESSURE IN HPA 1019.9 1018.2 1017.5 1017.6 1017.9 1015.2 1014.2 1016.6 1019.3 1022.6 1022.5 1022.1 1018.6 MAX. QNH PRESSURE IN HPA 1032.9 1032.2 1031.1 1031.1 1026.9 1024.4 1024.1 1024.9 1030.5 1031.8 1035.0 1032.1 1035.0 YEAR-DAY 99- 2 91-15 2-11 94- 5 98- 8 93-23 0-30 92-31 94-23 95-25 96-18 99- 6 96-18 MIN. QNH PRESSURE IN HPA 1002.2 1004.0 1004.8 1004.8 1006.6 1004.9 1006.5 1008.9 1010.4 1012.2 1008.4 1005.9 1002.2 YEAR-DAY 98-13 1-21 97-25 2- 4 91-23 99-25 95-16 94- 2 96-22 96-27 94-26 94- 4 98-13 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 859.2 857.4 856.7 856.8 857.0 854.6 853.6 855.6 858.1 861.2 861.5 861.2 857.7 MAX. QFE PRESSURE IN HPA 870.3 869.8 867.6 868.0 864.9 862.1 862.0 862.5 868.2 869.6 872.3 869.8 872.3 YEAR-DAY 99- 2 91-15 2-11 94- 5 95-26 93-23 0-30 92-31 94-23 95-25 96-18 98-29 96-18 MIN. QFE PRESSURE IN HPA 845.5 843.4 843.6 846.6 847.5 846.2 846.9 849.2 850.2 852.0 850.4 847.5 843.4 YEAR-DAY 98-13 1-21 3-26 2- 3 99-20 99-25 95-16 94- 2 0- 1 96-27 1-18 2-21 1-21 MEAN QNH PRESSURE IN HPA 1018.9 1016.9 1016.0 1016.2 1016.4 1013.6 1012.4 1014.8 1017.6 1021.2 1021.5 1021.2 1017.2 MAX. QNH PRESSURE IN HPA 1031.6 1031.1 1028.5 1029.0 1025.4 1022.2 1022.1 1022.7 1029.2 1030.8 1033.9 1031.1 1033.9 YEAR-DAY 99- 2 91-15 2-11 94- 5 95-26 93-23 0-30 92-31 94-23 95-25 96-18 98-29 96-18 MIN. QNH PRESSURE IN HPA 1003.2 1000.8 1001.0 1004.4 1005.5 1004.0 1004.8 1007.4 1008.6 1010.6 1008.8 1005.5 1000.8 YEAR-DAY 98-13 1-21 3-26 2- 3 99-20 99-25 95-16 94- 2 0- 1 96-27 1-18 2-21 1-21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1991-2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 859.6 857.7 856.7 856.7 856.7 853.9 853.0 855.1 857.8 861.3 861.8 861.6 857.7 MAX. QFE PRESSURE IN HPA 870.3 869.8 867.0 868.1 864.1 861.7 861.5 862.0 868.0 869.6 872.8 870.0 872.8 YEAR-DAY 99- 2 91-15 2-11 94- 5 98- 8 93-22 0-30 96-29 94-23 95-25 96-18 98-29 96-18 MIN. QFE PRESSURE IN HPA 846.5 844.6 845.0 847.3 846.0 845.5 846.3 848.1 850.0 851.7 850.4 847.1 844.6 YEAR-DAY 3-28 1-21 97-29 97-10 99-20 99-25 95-16 94- 2 0- 1 96-27 1-18 2-21 1-21 MEAN QNH PRESSURE IN HPA 1019.3 1017.1 1016.0 1016.0 1016.0 1012.9 1011.8 1014.2 1017.3 1021.3 1021.9 1021.7 1017.1 MAX. QNH PRESSURE IN HPA 1031.6 1031.1 1027.9 1029.1 1024.5 1021.8 1021.5 1022.1 1029.0 1030.8 1034.5 1031.3 1034.5 YEAR-DAY 99- 2 91-15 2-11 94- 5 98- 8 93-22 0-30 96-29 94-23 95-25 96-18 98-29 96-18 MIN. QNH PRESSURE IN HPA 1004.3 1002.1 1002.6 1005.2 1003.7 1003.2 1004.1 1006.1 1008.3 1010.3 1008.8 1005.0 1002.1 YEAR-DAY 3-28 1-21 97-29 97-10 99-20 99-25 95-16 94- 2 0- 1 96-27 1-18 2-21 1-21 MEAN QFF PRESSURE IN HPA 1021.2 1017.7 1014.3 1010.0 1007.2 1000.6 997.8 1000.7 1006.4 1014.3 1019.3 1022.2 1011.0 MAX. QFF PRESSURE IN HPA 1035.7 1036.3 1033.0 1029.5 1023.6 1012.5 1008.1 1013.3 1021.7 1027.1 1034.8 1035.5 1036.3 YEAR-DAY 99- 2 91-15 92-12 94- 5 92- 2 93-22 0-30 92-31 94-23 95-25 96-18 94- 7 91-15 MIN. QFF PRESSURE IN HPA 1005.3 1001.0 1000.0 999.1 992.0 989.3 986.9 990.7 994.6 1001.5 1005.6 1004.5 986.9 YEAR-DAY 3-28 1-21 3-26 99- 8 99-20 99-25 95-16 94- 2 0- 1 96-27 1-18 94- 3 95-16 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 1 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF DRY BULB TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 3.5 3.2 8.6 17.6 20.6 27.4 30.7 30.2 25.8 18.8 12.3 4.8 17.0 1992 0.7 3.5 5.4 14.7 17.3 26.4 31.7 27.7 24.1 18.8 12.7 ***** ****** 1993 1.4 ***** 8.2 16.4 20.8 27.8 30.0 29.5 27.2 17.1 8.1 6.9 ****** 1994 5.8 5.4 12.0 17.8 21.7 27.7 31.4 31.5 23.3 17.2 12.3 3.3 17.4 1995 6.8 7.5 11.6 16.6 21.1 26.8 32.8 32.5 25.7 18.1 13.7 4.0 18.1 1996 2.0 6.3 6.6 14.8 22.7 28.2 29.8 30.4 27.9 18.5 11.4 8.4 17.3 1997 6.6 5.7 7.9 16.0 22.3 28.3 32.4 32.2 25.9 21.0 10.6 6.0 17.9 1998 2.2 4.6 9.9 18.2 21.8 29.4 31.0 30.4 26.5 20.0 15.8 10.8 18.4 1999 5.0 9.3 10.4 17.1 24.2 29.7 29.2 31.1 26.3 20.7 10.1 7.3 18.4 2000 4.5 6.3 10.2 20.3 25.7 29.0 30.6 30.7 27.3 17.5 9.5 5.9 18.1 2001 4.2 7.2 13.5 20.3 24.2 29.0 30.0 30.6 26.1 19.8 11.7 8.4 18.8 2002 4.6 8.6 13.1 14.7 22.1 28.0 30.3 31.4 28.7 23.0 12.1 3.4 18.3 2003 6.1 6.1 9.2 16.1 20.6 27.8 32.9 30.1 25.7 21.9 10.8 5.2 17.7 MEAN 4.1 6.1 9.7 17.0 21.9 28.1 31.0 30.6 26.2 19.4 11.6 6.2 17.7 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 2 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF MINIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 0.1 -0.5 4.9 12.0 14.6 20.9 24.6 24.1 19.9 13.8 7.9 1.5 12.0 1992 -2.5 -0.1 1.3 9.4 12.3 19.8 25.8 21.9 17.8 12.9 8.3 ***** ****** 1993 -1.9 ***** 3.8 11.2 15.2 21.0 24.0 23.3 21.2 12.2 4.8 3.2 ****** 1994 2.1 1.5 7.4 12.3 15.3 21.1 25.2 25.5 17.7 12.6 8.2 0.0 12.4 1995 2.6 3.5 6.7 11.2 15.2 20.1 26.2 26.0 19.6 12.9 8.4 0.4 12.7 1996 -0.8 2.5 3.1 9.8 16.5 21.8 23.9 24.3 21.8 12.8 6.7 4.4 12.2 1997 2.4 0.7 3.3 10.7 16.4 22.0 26.4 26.1 20.2 15.7 7.3 2.7 12.8 1998 -0.9 0.9 5.5 12.6 15.9 23.2 24.7 24.4 20.7 14.6 11.0 7.1 13.3 1999 1.4 4.9 6.0 11.7 17.6 23.0 23.2 25.1 20.6 15.2 6.2 3.9 13.2 2000 1.2 1.7 5.2 14.8 19.3 22.4 24.6 24.9 21.7 13.0 6.2 3.1 13.2 2001 1.0 3.0 8.7 14.6 18.4 22.6 24.5 24.4 20.8 14.9 7.6 5.2 13.8 2002 1.4 4.0 7.9 9.3 15.1 21.5 24.4 25.7 22.9 18.0 8.2 0.7 13.3 2003 2.6 2.8 4.9 11.7 14.9 21.9 27.2 24.3 20.3 17.1 6.6 2.1 13.1 MEAN 0.7 2.1 5.3 11.6 15.9 21.6 25.0 24.6 20.4 14.3 7.5 2.9 12.7 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 3 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF MAXIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 6.1 6.2 11.6 21.0 24.7 31.0 34.2 33.8 29.3 22.0 15.4 7.4 20.2 1992 3.3 6.6 8.4 18.2 20.7 29.8 35.1 31.3 27.7 22.5 16.2 ***** ****** 1993 4.3 ***** 11.2 19.8 23.8 31.1 33.4 32.8 30.7 20.5 11.0 9.5 ****** 1994 8.3 8.2 15.1 21.6 25.0 31.4 35.0 35.0 27.0 20.5 15.1 6.3 20.7 1995 9.9 10.5 15.1 19.9 24.6 30.3 36.3 35.6 29.0 21.2 17.1 6.7 21.4 1996 4.5 9.2 9.4 18.0 26.0 31.6 33.2 33.6 31.2 21.9 14.1 11.2 20.3 1997 9.2 8.9 11.0 19.5 25.6 31.7 35.7 35.6 29.3 24.3 13.1 8.5 21.0 1998 4.7 7.5 13.1 21.6 25.2 32.5 34.5 33.7 29.8 23.3 19.1 13.7 21.6 1999 7.6 12.5 13.6 20.7 27.8 33.2 32.9 34.5 29.9 24.0 12.8 10.2 21.6 2000 7.4 9.4 13.7 23.8 29.1 32.6 34.0 34.2 30.7 20.5 12.2 8.2 21.3 2001 6.8 10.4 17.1 23.8 27.3 32.5 33.6 34.2 29.7 23.2 14.9 11.0 22.0 2002 7.3 12.1 16.9 18.0 25.6 31.5 34.0 34.9 32.2 26.3 15.2 5.5 21.6 2003 9.0 9.0 12.3 19.3 24.4 31.4 36.6 33.9 29.3 25.4 14.1 7.9 21.1 MEAN 6.8 9.2 13.0 20.4 25.4 31.6 34.5 34.1 29.7 22.7 14.6 8.8 20.9 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 4 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M DIFFERENCE BETWEEN AVERAGE MAXIMUM AND MINIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 6.0 6.7 6.7 9.0 10.1 10.1 9.6 9.7 9.4 8.2 7.5 5.9 8.2 1992 5.8 6.7 7.1 8.8 8.4 10.0 9.3 9.4 9.9 9.6 7.9 ***** ****** 1993 6.2 ***** 7.4 8.6 8.6 10.1 9.4 9.5 9.5 8.3 6.2 6.3 ****** 1994 6.2 6.7 7.7 9.3 9.7 10.3 9.8 9.5 9.3 7.9 6.9 6.3 8.3 1995 7.3 7.0 8.4 8.7 9.4 10.2 10.1 9.6 9.4 8.3 8.7 6.3 8.7 1996 5.3 6.7 6.3 8.2 9.5 9.8 9.3 9.3 9.4 9.1 7.4 6.8 8.1 1997 6.8 8.2 7.7 8.8 9.2 9.7 9.3 9.5 9.1 8.6 5.8 5.8 8.2 1998 5.6 6.6 7.6 9.0 9.3 9.3 9.8 9.3 9.1 8.7 8.1 6.6 8.3 1999 6.2 7.6 7.6 9.0 10.2 10.2 9.7 9.4 9.3 8.8 6.6 6.3 8.4 2000 6.2 7.7 8.5 9.0 9.8 10.2 9.4 9.3 9.0 7.5 6.0 5.1 8.1 2001 5.8 7.4 8.4 9.2 8.9 9.9 9.1 9.8 8.9 8.3 7.3 5.8 8.2 2002 5.9 8.1 9.0 8.7 10.5 10.0 9.6 9.2 9.3 8.3 7.0 4.8 8.3 2003 6.4 6.2 7.4 7.6 9.5 9.5 9.4 9.6 9.0 8.3 7.5 5.8 8.0 MEAN 6.1 7.1 7.7 8.8 9.5 10.0 9.5 9.5 9.3 8.4 7.1 5.9 8.2 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 5 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF MEAN DAILY TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 3.1 2.8 8.3 16.5 19.6 26.0 29.4 29.0 24.6 17.9 11.7 4.5 16.1 1992 0.4 3.2 4.9 13.8 16.5 24.8 30.4 26.6 22.8 17.7 12.2 ***** ****** 1993 1.2 ***** 7.5 15.5 19.5 26.1 28.7 28.1 25.9 16.3 7.9 6.4 ****** 1994 5.2 4.9 11.2 16.9 20.2 26.3 30.1 30.3 22.3 16.6 11.6 3.2 16.6 1995 6.2 7.0 10.9 15.6 19.9 25.2 31.3 30.8 24.3 17.0 12.8 3.6 17.0 1996 1.8 5.9 6.2 13.9 21.2 26.7 28.6 28.9 26.5 17.4 10.4 7.8 16.3 1997 5.8 4.8 7.1 15.1 21.0 26.8 31.1 30.8 24.8 20.0 10.2 5.6 16.9 1998 1.9 4.2 9.3 17.1 20.5 27.9 29.6 29.1 25.2 18.9 15.0 10.4 17.4 1999 4.5 8.7 9.8 16.2 22.7 28.1 28.0 29.8 25.2 19.6 9.5 7.0 17.4 2000 4.3 5.6 9.5 19.3 24.2 27.5 29.3 29.6 26.2 16.7 9.2 5.6 17.2 2001 3.9 6.7 12.9 19.2 22.8 27.6 29.0 29.3 25.2 19.0 11.3 8.1 17.9 2002 4.3 8.0 12.4 13.6 20.4 26.5 29.2 30.3 27.5 22.2 11.7 3.1 17.4 2003 5.8 5.9 8.6 15.5 19.6 26.7 31.9 29.1 24.8 21.3 10.4 5.0 17.1 MEAN 3.7 5.6 9.1 16.0 20.6 26.6 29.7 29.4 25.0 18.5 11.1 5.9 16.8 SD 1.91 1.79 2.36 1.82 1.90 0.98 1.15 1.15 1.41 1.85 1.80 2.22 1.69 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 6 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M TEMPERATURE RECORDS LOWEST IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 -4.0 -8.0 -3.6 5.0 8.0 16.6 20.0 20.2 11.8 11.2 3.0 -3.5 -8.0 DAY 28 13 11 13 6 19 15 28 28 16 28 22 1992 -8.0 -5.2 -6.0 3.5 4.5 15.0 21.5 15.0 11.0 9.5 -1.2 ***** ****** DAY 28 12 11 3 5 9 12 31 2 18 28 ** 1993 -5.4 ***** -3.0 6.5 8.6 15.6 22.0 20.2 15.8 6.8 -1.5 -1.6 ****** DAY 21 ** 23 14 9 22 17 25 27 8 15 6 1994 -1.0 -3.6 2.4 2.0 8.5 11.8 17.8 23.0 14.5 9.0 2.0 -7.2 -7.2 DAY 12 4 17 5 7 5 1 10 21 25 26 7 1995 -1.0 -1.0 1.7 5.5 9.2 14.0 21.7 19.5 12.5 7.0 -1.8 -2.5 -2.5 DAY 21 25 27 7 9 1 1 31 22 19 26 20 1996 -6.6 -3.0 -1.4 3.5 12.0 16.4 19.0 20.0 16.6 7.0 0.8 0.6 -6.6 DAY 19 6 1 5 8 28 15 30 24 17 13 3 1997 -7.4 -6.4 -4.4 0.5 9.5 17.2 21.0 22.0 13.6 10.0 2.6 -1.0 -7.4 DAY 29 7 8 12 6 2 7 29 15 25 27 28 1998 -6.4 -5.6 -2.8 3.8 8.6 18.4 20.4 17.5 16.6 7.5 8.0 2.0 -6.4 DAY 14 28 3 6 4 2 25 4 13 11 25 5 1999 -2.5 -1.0 -0.4 5.2 11.2 20.0 17.0 21.6 12.5 7.0 -1.0 -1.0 -2.5 DAY 3 9 18 10 5 6 15 31 28 27 30 2 2000 -5.0 -3.0 -2.0 10.0 14.5 12.0 21.5 21.6 17.5 8.5 2.2 0.6 -5.0 DAY 18 8 3 1 2 13 27 12 30 4 11 16 2001 -6.0 -2.0 1.0 9.0 10.8 13.0 19.0 18.0 14.0 9.8 0.0 0.4 -6.0 DAY 28 23 12 10 4 12 19 12 20 27 20 22 2002 -4.2 -2.0 2.0 2.6 8.0 16.0 20.0 21.8 18.8 11.0 1.2 -3.4 -4.2 DAY 14 17 7 3 5 8 30 14 30 31 29 23 2003 -1.6 -4.0 -4.0 4.0 6.6 15.0 23.4 21.0 14.8 13.2 1.8 -4.0 -4.0 DAY 20 18 2 1 1 7 1 21 27 30 23 14 1991-2003 -8.0 -8.0 -6.0 0.5 4.5 11.8 17.0 15.0 11.0 6.8 -1.8 -7.2 -8.0 YEAR-DAY 92-28 91-13 92-11 97-12 92- 5 94- 5 99-15 92-31 92- 2 93- 8 95-26 94- 7 92 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 7 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M TEMPERATURE RECORDS HIGHEST IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 9.6 12.5 19.5 27.5 29.5 35.6 37.0 38.5 35.0 24.6 22.5 13.0 38.5 DAY 31 28 30 22 29 29 7 6 8 27 3 10 1992 8.2 12.4 17.5 25.0 29.4 35.8 38.4 35.5 30.6 26.2 20.6 ***** ****** DAY 2 22 29 21 30 30 5 25 25 13 2 ** 1993 12.4 ***** 20.4 27.4 29.2 36.0 36.8 36.2 34.5 29.0 17.6 14.5 ****** DAY 29 ** 30 19 19 29 3 14 4 1 3 26 1994 16.0 14.8 22.0 29.0 31.0 34.4 38.8 38.0 34.0 23.6 19.5 12.6 38.8 DAY 3 27 31 22 31 16 30 1 1 2 3 3 1995 15.0 15.2 20.6 25.0 29.6 34.4 41.0 38.5 32.7 29.5 22.6 12.0 41.0 DAY 31 4 24 3 22 29 16 5 11 4 2 1 1996 10.5 16.0 21.7 23.0 32.5 36.0 35.7 36.2 35.2 25.8 19.5 16.0 36.2 DAY 3 10 31 22 31 4 3 11 17 1 6 28 1997 14.4 14.4 17.0 28.0 33.0 35.0 38.8 38.8 35.0 28.8 16.4 13.0 38.8 DAY 7 18 22 26 28 27 14 15 1 4 5 8 1998 8.2 15.0 19.6 28.6 31.0 36.4 39.2 37.0 34.2 30.5 22.4 17.6 39.2 DAY 30 7 28 15 11 28 11 17 2 1 1 11 1999 11.0 17.0 19.5 26.5 34.6 36.0 37.4 36.6 33.2 29.0 18.2 16.6 37.4 DAY 30 27 26 30 31 1 4 25 11 6 19 29 2000 16.2 16.2 19.0 28.4 33.0 37.5 37.4 38.0 35.4 25.5 19.8 11.0 38.0 DAY 1 24 30 20 26 30 11 3 8 11 3 22 2001 13.8 17.2 24.4 27.0 33.5 38.0 38.4 37.6 33.2 28.6 23.0 17.2 38.4 DAY 13 28 31 5 15 27 10 22 5 1 6 31 2002 15.0 17.0 23.2 24.8 33.2 36.0 39.0 38.6 34.5 31.2 21.2 11.0 39.0 DAY 1 26 27 29 29 13 19 10 3 3 11 8 2003 15.4 13.6 18.0 27.2 30.0 36.6 40.4 36.4 34.0 29.4 20.0 15.0 40.4 DAY 13 9 25 7 18 23 17 12 7 10 1 17 1991-2003 16.2 17.2 24.4 29.0 34.6 38.0 41.0 38.8 35.4 31.2 23.0 17.6 41.0 YEAR-DAY 0- 1 1-28 1-31 94-22 99-31 1-27 95-16 97-15 0- 8 2- 3 1- 6 98-11 95 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 8 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M 0C COOLING DEGREE DAYS (BASE 21) YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 0.0 0.0 0.0 4.4 17.7 149.3 260.3 247.0 125.7 0.0 0.0 0.0 804.5 1992 0.0 0.0 0.0 0.0 8.1 114.8 292.9 175.0 60.0 0.1 0.0 ***** ****** 1993 0.0 ***** 0.0 2.5 25.6 152.0 238.5 219.2 148.3 5.2 0.0 0.0 ****** 1994 0.0 0.0 0.0 12.3 33.8 160.1 283.4 287.3 48.5 0.0 0.0 0.0 825.5 1995 0.0 0.0 0.0 0.0 18.0 127.8 317.8 304.1 110.5 5.5 0.0 0.0 883.9 1996 0.0 0.0 0.0 0.0 45.2 171.0 234.8 246.3 165.1 1.2 0.0 0.0 863.6 1997 0.0 0.0 0.0 5.4 41.5 174.4 312.0 303.9 115.3 16.7 0.0 0.0 969.5 1998 0.0 0.0 0.0 12.0 36.6 205.8 265.8 250.0 127.7 20.2 0.0 0.0 918.2 1999 0.0 0.0 0.0 0.5 70.9 212.8 217.6 273.4 135.0 23.2 0.0 0.0 933.5 2000 0.0 0.0 0.0 8.7 100.4 200.3 257.6 265.3 156.2 0.6 0.0 0.0 989.3 2001 0.0 0.0 0.0 7.5 75.7 202.1 249.2 257.7 135.6 9.8 0.0 0.0 937.7 2002 0.0 0.0 0.0 0.0 43.6 164.6 253.9 288.8 195.4 65.9 0.0 0.0 1012.3 2003 0.0 0.0 0.0 7.0 21.8 170.8 337.3 250.6 118.2 29.5 0.0 0.0 935.3 MEAN 0.0 0.0 0.0 4.7 41.5 169.7 270.9 259.1 126.3 13.7 0.0 0.0 885.9 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 9 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M 0C HEATING DEGREE DAYS (BASE 18) YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 462.0 424.3 301.7 74.1 21.2 0.0 0.0 0.0 2.6 22.8 190.1 419.6 1918.3 1992 546.3 427.8 407.1 125.0 81.7 0.0 0.0 0.0 0.5 30.2 173.5 ***** ****** 1993 521.6 ***** 325.4 88.4 23.5 0.0 0.0 0.0 0.0 67.3 303.5 361.0 ****** 1994 395.7 367.7 209.6 68.7 21.4 0.0 0.0 0.0 0.0 48.7 190.6 460.3 1762.6 1995 364.6 308.1 220.1 77.0 12.7 0.0 0.0 0.0 0.8 62.7 157.5 447.6 1650.9 1996 501.5 352.1 365.3 125.0 1.6 0.0 0.0 0.0 0.0 45.6 226.9 317.0 1935.1 1997 377.4 369.8 336.4 108.4 7.3 0.0 0.0 0.0 0.0 12.5 233.7 384.0 1829.6 1998 498.6 385.7 270.5 65.0 19.9 0.0 0.0 0.0 0.0 31.2 89.2 234.4 1594.5 1999 418.5 260.5 254.9 65.4 2.2 0.0 0.0 0.0 0.3 31.7 255.2 340.5 1629.3 2000 423.9 360.7 264.9 12.7 0.0 0.0 0.0 0.0 0.0 59.8 262.8 383.3 1768.1 2001 438.1 315.8 160.9 18.8 1.6 2.5 0.0 0.0 0.5 20.5 202.3 307.8 1468.7 2002 423.2 278.6 175.1 134.6 24.4 0.0 0.0 0.0 0.0 5.1 188.3 461.4 1690.7 2003 377.1 338.4 290.4 103.9 20.4 0.0 0.0 0.0 0.0 2.3 228.2 401.9 1762.6 MEAN 442.2 349.2 275.6 82.1 18.3 0.2 0.0 0.0 0.4 33.9 207.8 376.6 1786.3 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 10 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF DEW POINT TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 -3.3 -5.3 0.5 -2.1 -0.3 0.8 3.6 2.9 3.5 0.5 -2.2 -4.9 -0.5 1992 -7.4 -7.5 -5.1 -2.8 2.5 2.2 3.1 3.9 -1.4 -2.9 -2.4 ***** ****** 1993 -7.0 ***** -7.4 -2.7 0.2 -1.3 4.5 4.2 0.3 -3.3 0.9 -1.1 ****** 1994 -2.3 -5.8 -4.2 -1.1 -0.8 1.1 4.8 2.8 0.1 3.3 0.9 -6.6 -0.6 1995 -5.0 -4.6 -6.4 0.1 1.9 3.1 4.4 2.0 0.0 -1.0 -7.2 -5.2 -1.5 1996 -4.8 -1.7 -1.6 -0.0 3.9 1.9 4.4 2.1 -0.2 -0.5 -4.4 -4.9 -0.5 1997 -6.7 -11.2 -5.9 -3.5 -0.7 3.7 6.8 1.8 -1.2 -0.5 1.4 -0.6 -1.4 1998 -4.2 -4.3 -3.3 0.5 3.3 6.5 12.0 8.7 5.8 2.7 1.0 0.7 2.5 1999 -2.4 -4.4 -2.6 2.6 4.2 5.4 9.3 7.6 5.9 3.2 0.8 -1.0 2.4 2000 -4.0 -4.5 -3.7 2.7 3.3 6.5 9.2 9.3 8.6 4.8 1.9 1.0 2.9 2001 -2.5 -4.2 0.4 0.9 4.1 5.4 9.9 7.2 4.9 2.5 0.1 0.3 2.4 2002 -2.9 -4.2 -4.0 2.8 1.9 2.3 8.2 9.3 0.3 2.1 0.4 -4.5 1.0 2003 -4.1 -3.8 -2.6 4.1 3.5 5.7 9.2 8.1 4.8 1.9 -2.3 -1.9 1.9 MEAN -4.4 -5.1 -3.5 0.1 2.1 3.3 6.9 5.4 2.4 1.0 -0.8 -2.4 0.4 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 11 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF MIXING RATIO IN G/KG YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 3.58 3.15 4.86 4.16 4.75 5.09 6.00 5.81 6.07 4.77 3.84 3.30 4.61 1992 2.67 2.67 3.33 3.91 5.57 5.50 5.84 6.21 4.18 3.81 3.96 ***** ***** 1993 2.69 ***** 2.85 3.95 4.81 4.53 6.39 6.18 4.75 3.69 5.01 4.13 ***** 1994 3.91 2.99 3.54 4.36 4.48 5.16 6.49 5.77 4.78 6.04 5.10 2.94 4.63 1995 3.19 3.29 3.09 4.84 5.41 5.82 6.44 5.39 4.64 4.26 2.85 3.12 4.36 1996 3.23 4.06 4.08 4.68 6.17 5.56 6.24 5.52 4.70 4.45 3.32 3.27 4.61 1997 2.82 2.05 3.16 3.77 4.40 5.98 7.49 5.35 4.33 4.43 5.05 4.36 4.43 1998 3.39 3.37 3.80 4.82 5.85 7.17 10.57 8.35 6.93 5.50 4.95 4.81 5.79 1999 3.85 3.40 3.84 5.67 6.31 7.01 8.97 7.93 7.02 5.81 4.90 4.24 5.75 2000 3.47 3.29 3.65 5.70 5.89 7.27 8.76 8.82 8.39 6.45 5.26 4.90 5.99 2001 3.77 3.38 4.72 4.91 6.24 6.87 9.38 7.63 6.46 5.56 4.63 4.76 5.69 2002 3.73 3.36 3.59 5.71 5.26 5.39 8.13 8.79 4.69 5.27 4.74 3.50 5.18 2003 3.38 3.50 3.92 6.17 5.96 6.92 8.75 8.01 6.45 5.23 3.89 4.03 5.52 MEAN 3.36 3.21 3.72 4.82 5.47 6.02 7.65 6.90 5.65 5.02 4.42 3.95 5.02 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 12 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF VAPOUR PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 4.93 4.33 6.64 5.70 6.48 6.94 8.16 7.92 8.30 6.56 5.30 4.52 6.31 1992 3.66 3.66 4.56 5.35 7.62 7.50 7.95 8.48 5.74 5.24 5.45 ***** ***** 1993 3.71 ***** 3.91 5.41 6.58 6.17 8.70 8.43 6.50 5.09 6.87 5.69 ***** 1994 5.37 4.10 4.85 5.98 6.13 7.01 8.81 7.85 6.57 8.30 6.99 4.05 6.33 1995 4.40 4.51 4.24 6.62 7.41 7.92 8.73 7.35 6.35 5.87 3.92 4.31 5.97 1996 4.45 5.56 5.58 6.41 8.43 7.58 8.51 7.53 6.42 6.12 4.59 4.50 6.31 1997 3.87 2.82 4.31 5.15 6.03 8.14 10.15 7.30 5.94 6.09 6.94 5.98 6.06 1998 4.64 4.62 5.20 6.59 8.00 9.78 14.27 11.36 9.46 7.56 6.80 6.62 7.91 1999 5.30 4.67 5.26 7.74 8.60 9.51 12.13 10.78 9.57 7.97 6.73 5.85 7.84 2000 4.76 4.51 5.00 7.79 8.03 9.88 11.88 11.98 11.42 8.84 7.24 6.73 8.17 2001 5.18 4.64 6.46 6.71 8.50 9.33 12.67 10.38 8.84 7.62 6.36 6.55 7.77 2002 5.13 4.62 4.91 7.79 7.18 7.34 11.04 11.92 6.44 7.24 6.52 4.81 7.08 2003 4.64 4.78 5.36 8.41 8.13 9.39 11.80 10.88 8.80 7.17 5.36 5.54 7.52 MEAN 4.62 4.40 5.10 6.59 7.47 8.19 10.37 9.40 7.72 6.90 6.08 5.43 6.86 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 13 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF SATURATION DEFICIT PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 3.01 3.73 4.99 15.19 18.60 30.15 36.68 35.78 26.21 15.48 9.41 4.34 16.96 1992 2.93 4.41 4.77 11.91 13.20 27.68 39.46 29.38 24.79 16.91 9.74 ***** ***** 1993 3.28 ***** 7.50 13.71 18.73 32.03 34.35 33.32 30.37 14.94 4.37 4.49 ***** 1994 4.01 5.10 9.51 15.29 20.68 30.81 38.07 38.92 22.52 11.55 7.53 4.01 17.33 1995 5.65 6.10 9.76 12.67 18.27 27.86 41.78 42.23 27.53 15.58 12.49 3.96 18.66 1996 2.86 4.33 4.52 11.04 19.97 31.31 33.93 36.60 32.03 15.72 9.26 6.66 17.35 1997 6.10 6.72 6.71 14.01 21.68 30.97 39.30 41.51 28.12 19.29 6.02 3.50 18.66 1998 2.60 4.18 7.56 15.10 18.97 31.81 31.38 32.84 25.73 16.65 11.39 6.55 17.06 1999 3.55 7.32 7.79 12.22 22.39 32.84 29.48 34.89 25.69 17.35 5.95 4.61 17.01 2000 4.01 5.30 7.89 16.50 25.56 31.47 32.61 32.73 25.58 11.71 4.92 2.64 16.74 2001 3.36 5.75 9.69 17.69 22.50 32.21 30.44 34.47 25.86 16.05 7.95 4.64 17.55 2002 3.68 6.93 10.64 9.47 20.43 31.19 33.02 34.95 33.51 21.57 8.04 3.13 18.05 2003 5.10 4.84 6.59 10.87 16.83 28.79 38.90 32.44 25.08 19.59 7.99 3.55 16.71 MEAN 3.86 5.39 7.53 13.51 19.83 30.70 35.34 35.39 27.16 16.34 8.08 4.34 17.29 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 14 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 64 57 60 30 29 20 19 19 26 32 39 53 37 1992 57 47 51 34 43 23 18 24 20 26 37 *** *** 1993 57 *** 39 32 29 18 21 21 19 28 63 59 *** 1994 59 47 37 31 26 20 20 18 24 44 50 50 36 1995 45 45 32 37 32 24 18 16 21 30 25 55 32 1996 63 61 61 40 33 21 21 18 18 30 35 42 37 1997 41 31 42 29 23 22 22 16 19 26 56 65 33 1998 65 57 45 33 33 25 33 27 29 34 40 53 40 1999 62 41 44 40 29 24 32 25 30 35 56 59 40 2000 57 49 41 33 25 26 28 28 33 47 62 73 42 2001 66 47 45 29 30 26 31 25 28 35 47 61 39 2002 62 43 34 50 29 20 27 27 17 27 49 61 37 2003 51 53 47 49 35 26 24 26 28 28 42 63 39 MEAN 58 48 44 36 30 23 24 22 24 32 46 58 37 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 15 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF MAXIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 75 72 74 42 45 30 27 27 34 45 50 69 49 1992 69 60 66 52 59 34 27 33 28 37 48 *** *** 1993 67 *** 57 48 43 31 29 30 28 40 79 73 *** 1994 75 63 56 45 41 30 27 24 32 57 64 64 48 1995 61 61 46 52 44 34 24 23 33 42 35 66 43 1996 75 75 75 56 46 31 28 27 25 44 51 56 49 1997 53 44 59 40 32 32 29 21 28 36 68 79 43 1998 76 71 59 46 48 35 42 39 39 45 50 63 51 1999 78 57 58 53 39 33 45 33 38 45 69 71 52 2000 70 65 53 43 34 34 36 35 42 58 76 84 53 2001 75 60 57 39 40 35 41 34 38 50 61 75 50 2002 77 60 51 66 42 31 38 34 26 37 63 72 50 2003 63 69 65 63 50 36 33 36 37 39 57 74 52 MEAN 70 63 60 50 43 33 33 30 33 44 59 71 49 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 16 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF MINIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 53 46 48 22 19 14 15 15 20 24 30 41 29 1992 45 36 39 22 33 16 12 19 15 18 29 *** *** 1993 48 *** 27 21 20 11 16 16 14 20 51 47 *** 1994 46 36 25 22 16 14 15 13 18 32 39 38 26 1995 34 35 23 26 22 15 13 11 15 24 18 46 24 1996 50 49 49 29 24 15 16 13 13 23 25 31 28 1997 31 21 31 21 16 15 16 11 13 19 46 53 24 1998 55 46 35 24 24 19 27 21 23 27 33 44 32 1999 51 31 33 32 23 18 24 19 24 27 46 48 31 2000 47 38 32 25 18 20 22 22 27 39 51 65 34 2001 57 37 35 22 22 20 23 20 22 26 36 49 31 2002 49 32 24 38 21 14 21 22 13 21 38 51 29 2003 40 41 35 39 25 19 19 21 22 20 32 52 30 MEAN 47 37 34 26 22 16 18 17 18 25 36 47 29 RH=0 =====> RELATIVE HUMIDITY < 0.5% =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 17 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF RELATIVE HUMIDITY AT 03 UTC. IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 71 65 66 41 41 29 27 26 33 44 49 63 46 1992 65 55 60 48 56 33 26 33 28 36 46 *** *** 1993 64 *** 52 45 41 28 29 30 28 38 74 69 *** 1994 69 60 51 42 39 29 27 23 31 54 62 60 46 1995 59 58 44 49 41 33 24 23 33 41 33 63 42 1996 68 71 70 52 44 30 27 27 24 43 48 53 46 1997 51 41 56 37 30 31 28 20 28 36 65 75 42 1998 70 66 57 44 43 34 42 39 38 45 47 60 49 1999 75 52 53 52 39 32 45 33 37 43 66 68 50 2000 65 61 50 42 33 33 35 35 41 56 71 80 50 2001 73 57 54 37 39 34 41 34 37 48 57 72 49 2002 72 57 48 62 41 31 38 34 26 35 58 68 48 2003 57 65 60 60 48 36 33 36 37 37 54 69 49 MEAN 66 59 55 47 41 32 32 30 32 43 56 67 47 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 18 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF RELATIVE HUMIDITY AT 09 UTC. IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 60 55 59 27 25 18 17 18 24 28 34 48 34 1992 53 42 46 31 41 20 16 22 18 21 32 *** *** 1993 52 *** 35 27 25 18 19 19 16 24 58 52 *** 1994 55 42 34 27 21 18 18 16 21 36 43 46 31 1995 39 42 30 33 28 23 19 15 18 27 22 53 29 1996 62 59 59 37 31 19 19 17 17 27 30 40 35 1997 38 28 38 29 22 21 22 15 17 21 49 59 30 1998 61 54 41 29 29 22 30 25 25 31 36 48 36 1999 56 38 41 37 27 22 30 22 28 34 53 53 37 2000 53 46 39 30 23 24 26 27 30 45 58 68 39 2001 62 43 43 27 27 24 29 22 25 30 44 52 36 2002 57 37 28 46 27 18 24 26 14 25 43 56 33 2003 47 49 42 47 32 23 23 24 25 23 35 57 36 MEAN 53 45 41 33 28 21 22 21 21 29 41 53 34 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 19 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF RELATIVE HUMIDITY AT 15 UTC. IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 66 57 56 27 24 16 16 17 24 31 40 56 36 1992 57 47 49 31 38 19 15 21 19 28 40 *** *** 1993 59 *** 34 28 25 12 17 19 18 29 64 63 *** 1994 61 46 34 28 22 15 17 16 21 44 51 49 34 1995 44 43 29 34 28 17 14 13 18 28 25 55 29 1996 64 58 62 37 30 17 18 16 17 29 34 40 35 1997 39 27 38 26 21 17 17 14 17 26 59 69 31 1998 67 55 43 30 31 21 28 23 27 33 40 55 38 1999 59 39 41 34 25 19 26 21 27 33 56 61 37 2000 59 47 36 29 20 22 23 24 30 46 64 77 40 2001 66 48 41 27 26 21 25 21 26 35 50 63 37 2002 61 39 32 45 25 16 22 24 15 28 52 62 35 2003 51 51 44 43 31 21 20 23 26 30 44 63 37 MEAN 58 46 41 32 27 18 20 19 22 32 48 59 35 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 20 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M NO. OF DAYS WITH MAXIMUM TEMPERATURE EQUAL 30 AND ABOVE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 0 0 0 0 0 23 31 30 18 0 0 0 102 1992 0 0 0 0 0 13 31 24 2 0 0 *** *** 1993 0 *** 0 0 0 20 31 29 19 0 0 0 *** 1994 0 0 0 0 4 25 31 31 5 0 0 0 96 1995 0 0 0 0 0 19 31 31 16 0 0 0 97 1996 0 0 0 0 4 24 31 29 23 0 0 0 111 1997 0 0 0 0 6 25 31 31 11 0 0 0 104 1998 0 0 0 0 1 26 30 28 17 1 0 0 103 1999 0 0 0 0 8 29 25 31 19 0 0 0 112 2000 0 0 0 0 12 24 31 31 19 0 0 0 117 2001 0 0 0 0 6 23 30 29 21 0 0 0 109 2002 0 0 0 0 6 22 31 31 27 5 0 0 122 2003 0 0 0 0 1 22 31 31 15 0 0 0 100 MEAN 0.0 0.0 0.0 0.0 3.7 22.7 30.4 29.7 16.3 0.5 0.0 0.0 103.3 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 21 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M NO. OF DAYS WITH MAXIMUM TEMPERATURE EQUAL 00 AND BELOW YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 0 3 0 0 0 0 0 0 0 0 0 0 3 1992 5 0 1 0 0 0 0 0 0 0 0 *** *** 1993 2 *** 0 0 0 0 0 0 0 0 0 0 *** 1994 0 0 0 0 0 0 0 0 0 0 0 3 3 1995 0 0 0 0 0 0 0 0 0 0 0 0 0 1996 5 0 0 0 0 0 0 0 0 0 0 0 5 1997 0 0 0 0 0 0 0 0 0 0 0 0 0 1998 1 1 1 0 0 0 0 0 0 0 0 0 3 1999 0 0 0 0 0 0 0 0 0 0 0 0 0 2000 0 0 0 0 0 0 0 0 0 0 0 0 0 2001 3 0 0 0 0 0 0 0 0 0 0 0 3 2002 0 0 0 0 0 0 0 0 0 0 0 0 0 2003 0 0 0 0 0 0 0 0 0 0 0 1 1 MEAN 1.2 0.3 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 2.0 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 22 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M NO. OF DAYS WITH MINIMUM TEMPERATURE EQUAL 21 AND ABOVE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 0 0 0 0 0 16 30 29 14 0 0 0 89 1992 0 0 0 0 0 10 31 22 0 0 0 *** *** 1993 0 *** 0 0 2 19 31 29 19 0 0 0 *** 1994 0 0 0 0 0 17 29 31 2 0 0 0 79 1995 0 0 0 0 0 12 31 30 13 0 0 0 86 1996 0 0 0 0 2 20 29 29 21 0 0 0 101 1997 0 0 0 0 2 22 31 31 9 1 0 0 96 1998 0 0 0 0 2 27 30 27 15 1 0 0 102 1999 0 0 0 0 8 26 24 31 19 0 0 0 108 2000 0 0 0 0 9 24 31 31 18 0 0 0 113 2001 0 0 0 0 7 22 30 29 20 1 0 0 109 2002 0 0 0 0 3 17 29 31 26 5 0 0 111 2003 0 0 0 0 0 20 31 31 16 2 0 0 100 MEAN 0.0 0.0 0.0 0.0 2.7 19.4 29.8 29.3 14.8 0.8 0.0 0.0 96.8 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 23 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M NO. OF DAYS WITH MINIMUM TEMPERATURE EQUAL -4 AND BELOW YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 1 6 0 0 0 0 0 0 0 0 0 0 7 1992 12 3 4 0 0 0 0 0 0 0 0 *** *** 1993 7 *** 0 0 0 0 0 0 0 0 0 0 *** 1994 0 0 0 0 0 0 0 0 0 0 0 7 7 1995 0 0 0 0 0 0 0 0 0 0 0 0 0 1996 8 0 0 0 0 0 0 0 0 0 0 0 8 1997 1 4 1 0 0 0 0 0 0 0 0 0 6 1998 3 2 0 0 0 0 0 0 0 0 0 0 5 1999 0 0 0 0 0 0 0 0 0 0 0 0 0 2000 1 0 0 0 0 0 0 0 0 0 0 0 1 2001 4 0 0 0 0 0 0 0 0 0 0 0 4 2002 2 0 0 0 0 0 0 0 0 0 0 0 2 2003 0 1 1 0 0 0 0 0 0 0 0 1 3 MEAN 3.0 1.3 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.7 5.5 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 24 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M NO. OF DAYS WITH MINIMUM TEMPERATURE EQUAL 00 AND BELOW YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 18 15 2 0 0 0 0 0 0 0 0 16 51 1992 24 17 12 0 0 0 0 0 0 0 2 *** *** 1993 26 *** 6 0 0 0 0 0 0 0 4 3 *** 1994 6 8 0 0 0 0 0 0 0 0 0 16 30 1995 4 3 0 0 0 0 0 0 0 0 1 12 20 1996 19 6 5 0 0 0 0 0 0 0 0 0 30 1997 7 14 6 0 0 0 0 0 0 0 0 3 30 1998 20 12 3 0 0 0 0 0 0 0 0 0 35 1999 10 2 2 0 0 0 0 0 0 0 2 3 19 2000 14 9 2 0 0 0 0 0 0 0 0 0 25 2001 12 2 0 0 0 0 0 0 0 0 1 0 15 2002 18 6 0 0 0 0 0 0 0 0 0 17 41 2003 7 7 3 0 0 0 0 0 0 0 0 8 25 MEAN 14.2 8.4 3.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.8 6.5 33.1 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 25 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MONTHLY TOTAL OF PRECIPITATION IN MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 22.1 33.7 124.6 22.7 8.7 4.1 0.0 0.0 0.0 2.3 0.0 74.9 293.1 1992 39.7 37.2 78.3 48.5 63.6 12.2 0.0 4.0 0.0 0.2 6.1 ***** ****** 1993 39.9 ***** 60.3 25.0 8.9 2.0 0.0 1.0 0.0 5.1 66.6 19.2 ****** 1994 53.4 51.6 30.6 19.2 38.5 3.0 0.0 0.0 0.0 35.7 146.8 6.2 385.0 1995 6.5 19.6 31.2 44.2 16.4 2.4 0.0 0.0 0.8 4.2 0.0 23.7 149.0 1996 76.6 91.5 182.5 68.5 38.4 15.4 0.4 0.0 0.0 22.4 0.3 15.1 511.1 1997 7.0 5.0 55.4 12.6 0.3 11.3 0.6 0.0 0.0 1.0 35.3 56.7 185.2 1998 66.4 58.4 77.6 44.7 31.2 0.0 2.4 17.6 3.0 4.8 1.4 61.3 368.8 1999 43.2 16.1 53.2 5.3 1.0 0.0 13.3 0.0 0.2 18.4 66.6 26.0 243.3 2000 45.1 43.5 17.7 1.6 0.6 0.0 0.8 0.0 2.8 48.5 23.3 83.4 267.3 2001 54.0 2.4 21.4 2.8 18.8 18.0 0.3 0.7 5.4 15.5 30.3 50.5 220.1 2002 49.2 5.2 37.0 120.4 13.6 0.0 10.5 0.0 0.0 2.0 40.2 101.2 379.3 2003 39.8 73.5 62.8 119.1 21.1 0.0 0.0 1.0 0.0 17.4 13.1 55.1 402.9 MEAN 41.8 36.5 64.0 41.1 20.1 5.3 2.2 1.9 0.9 13.7 33.1 47.8 308.4 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 26 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M GREATEST DAILY OF PRECIPITATION IN MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 9.0 11.0 31.0 13.0 2.0 4.0 0.0 0.0 0.0 1.0 0.0 20.0 31.0 DAY 22 21 6 4 3 19 ** ** ** 15 ** 9 1992 13.0 18.3 15.0 24.9 21.8 5.0 0.0 4.0 0.0 0.2 6.0 ***** ****** DAY 31 25 15 27 2 3 ** 29 ** 8 8 ** 1993 22.0 ***** 17.0 8.0 3.0 1.0 0.0 1.0 0.0 3.0 16.0 13.0 ****** DAY 8 ** 8 8 14 1 ** 29 ** 29 3 16 1994 12.0 37.0 14.0 15.0 12.0 2.0 0.0 0.0 0.0 23.0 37.0 3.0 37.0 DAY 17 1 12 30 6 3 ** ** ** 4 26 1 1995 4.1 11.0 16.0 31.0 4.2 2.0 0.0 0.0 0.8 3.3 0.0 6.0 31.0 DAY 17 24 17 24 26 1 ** ** 22 25 ** 13 1996 11.0 30.0 60.0 30.0 13.0 14.0 0.4 0.0 0.0 11.0 0.3 9.1 60.0 DAY 19 2 2 3 8 28 12 ** ** 16 9 22 1997 6.0 3.0 10.0 6.0 0.3 8.0 0.6 0.0 0.0 0.4 18.0 25.0 25.0 DAY 16 19 4 6 5 24 6 ** ** 7 2 10 1998 22.0 18.0 32.0 21.0 7.0 0.0 2.0 16.0 2.0 4.0 1.0 41.0 41.0 DAY 6 12 30 6 4 ** 30 4 14 11 11 4 1999 14.0 7.0 15.4 3.0 1.0 0.0 5.0 0.0 0.2 11.4 22.0 8.0 22.0 DAY 10 8 21 24 10 ** 14 ** 27 27 11 10 2000 18.0 29.0 7.0 1.0 0.6 0.0 0.8 0.0 2.0 19.0 6.0 29.0 29.0 DAY 28 14 23 22 24 ** 13 ** 6 17 30 1 2001 20.0 2.0 12.0 2.0 14.0 18.0 0.3 0.3 5.0 4.6 8.0 23.0 23.0 DAY 24 19 10 27 4 12 19 9 20 26 7 5 2002 21.0 3.0 27.3 29.0 9.0 0.0 7.0 0.0 0.0 1.0 15.0 22.3 29.0 DAY 12 20 19 3 4 ** 30 ** ** 30 26 9 2003 15.0 21.2 19.3 27.0 9.0 0.0 0.0 1.0 0.0 7.0 12.0 9.0 27.0 DAY 29 14 13 1 28 ** ** 21 ** 28 30 27 1991-2003 22.0 37.0 60.0 31.0 21.8 18.0 7.0 16.0 5.0 23.0 37.0 41.0 60.0 YEAR-DAY 93- 8 94- 1 96- 2 95-24 92- 2 1-12 2-30 98- 4 1-20 94- 4 94-26 98- 4 96 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 27 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M NO. OF DAYS WITH PRECIPITATION EQUAL TO OR GREATER THAN 10 MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 0 1 5 1 0 0 0 0 0 0 0 4 11 1992 1 2 3 1 2 0 0 0 0 0 0 *** *** 1993 1 *** 3 0 0 0 0 0 0 0 2 1 *** 1994 2 1 1 1 2 0 0 0 0 1 5 0 13 1995 0 1 1 1 0 0 0 0 0 0 0 0 3 1996 2 5 5 2 2 1 0 0 0 2 0 0 19 1997 0 0 4 0 0 0 0 0 0 0 1 3 8 1998 3 3 2 1 0 0 0 1 0 0 0 2 12 1999 2 0 2 0 0 0 0 0 0 1 4 0 9 2000 1 2 0 0 0 0 0 0 0 2 0 3 8 2001 3 0 1 0 1 1 0 0 0 0 0 1 7 2002 2 0 1 6 0 0 0 0 0 0 2 4 15 2003 2 4 4 5 0 0 0 0 0 0 1 0 16 MEAN 1.5 1.6 2.5 1.4 0.5 0.2 0.0 0.1 0.0 0.5 1.2 1.5 11.0 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 28 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M NO. OF DAYS WITH PRECIPITATION EQUAL TO OR GREATER THAN 5 MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 1 2 6 2 0 0 0 0 0 0 0 5 16 1992 5 2 5 2 3 1 0 0 0 0 1 *** *** 1993 2 *** 4 3 0 0 0 0 0 0 6 1 *** 1994 5 3 2 1 3 0 0 0 0 2 7 0 23 1995 0 1 2 1 0 0 0 0 0 0 0 3 7 1996 9 5 10 4 3 1 0 0 0 2 0 2 36 1997 1 0 6 2 0 1 0 0 0 0 3 4 17 1998 6 5 5 3 2 0 0 1 0 0 0 2 24 1999 3 2 5 0 0 0 2 0 0 2 5 3 22 2000 3 2 2 0 0 0 0 0 0 3 2 5 17 2001 3 0 1 0 1 1 0 0 1 0 4 4 15 2002 4 0 2 6 1 0 1 0 0 0 3 7 24 2003 4 5 4 6 2 0 0 0 0 2 1 4 28 MEAN 3.5 2.2 4.2 2.3 1.2 0.3 0.2 0.1 0.1 0.8 2.5 3.3 20.7 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 29 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M NO. OF DAYS WITH PRECIPITATION EQUAL TO OR GREATER THAN 1 MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 6 7 12 3 5 1 0 0 0 0 0 10 44 1992 7 6 12 8 11 4 0 1 0 0 1 *** *** 1993 6 *** 9 6 5 2 0 1 0 2 10 3 *** 1994 8 4 7 4 5 2 0 0 0 4 12 2 48 1995 2 4 6 5 6 1 0 0 0 1 0 6 31 1996 12 10 13 7 6 2 0 0 0 2 0 2 54 1997 2 2 7 2 0 3 0 0 0 0 6 6 28 1998 7 7 10 6 8 0 1 2 1 1 1 3 47 1999 6 4 6 2 0 0 3 0 0 3 5 5 34 2000 8 4 3 1 0 0 0 0 1 6 7 7 37 2001 6 1 5 1 3 1 0 0 1 6 7 7 38 2002 6 2 4 11 3 0 3 0 0 2 7 13 51 2003 5 7 7 11 3 0 0 1 0 3 2 11 50 MEAN 6.2 4.8 7.8 5.2 4.2 1.2 0.5 0.4 0.2 2.3 4.5 6.2 43.5 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 30 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M NO. OF DAYS WITH PRECIPITATION YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 11 16 15 13 7 5 0 0 2 5 2 15 91 1992 12 16 16 14 17 10 2 2 0 1 6 *** *** 1993 8 *** 13 10 12 3 0 1 0 3 17 6 *** 1994 10 8 11 8 9 3 0 0 3 12 15 8 87 1995 5 9 7 10 12 4 0 0 3 2 0 6 58 1996 13 15 19 11 12 3 1 0 0 3 2 4 83 1997 2 3 13 5 3 6 1 0 0 5 11 11 60 1998 14 10 12 9 14 0 2 3 4 2 3 5 78 1999 10 6 9 5 1 1 4 0 1 4 6 7 54 2000 11 7 6 4 2 1 1 0 2 9 13 11 67 2001 11 3 7 3 5 1 1 3 2 7 11 14 68 2002 10 4 10 16 5 0 4 0 0 2 13 16 80 2003 6 11 12 14 6 0 0 1 0 5 6 15 76 MEAN 9.5 9.0 11.5 9.4 8.1 2.8 1.2 0.8 1.3 4.6 8.1 9.8 76.1 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 31 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M NO. OF DAYS WITH THUNDER STORM YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 0 0 2 5 2 2 0 0 0 2 1 0 14 1992 0 0 2 4 7 7 2 0 0 0 0 *** *** 1993 0 *** 1 0 2 1 0 1 0 0 0 0 *** 1994 2 0 0 2 2 2 0 0 0 2 1 0 11 1995 0 0 1 0 0 1 0 0 0 1 0 0 3 1996 0 0 1 1 1 0 0 0 0 1 0 0 4 1997 0 0 0 1 1 0 0 0 0 0 0 0 2 1998 0 0 0 3 3 0 1 0 2 0 0 0 9 1999 0 0 1 0 0 0 0 0 0 0 1 0 2 2000 0 0 0 0 0 0 1 0 0 0 0 0 1 2001 0 0 0 1 0 0 0 0 0 4 0 0 5 2002 0 0 1 5 2 0 3 0 0 0 0 2 13 2003 0 0 2 4 4 0 0 0 0 4 0 0 14 MEAN 0.2 0.0 0.8 2.0 1.8 1.0 0.5 0.1 0.2 1.1 0.2 0.2 8.1 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 32 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M NO. OF DAYS WITH SNOW OR SLEET YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 5 6 2 0 0 0 0 0 0 0 0 5 18 1992 9 9 4 0 0 0 0 0 0 0 1 *** *** 1993 7 *** 4 0 0 0 0 0 0 0 2 4 *** 1994 2 4 0 0 0 0 0 0 0 0 0 3 9 1995 0 0 0 0 0 0 0 0 0 0 0 4 4 1996 7 3 7 0 0 0 0 0 0 0 0 0 17 1997 1 0 1 0 0 0 0 0 0 0 0 3 5 1998 8 6 2 0 0 0 0 0 0 0 0 1 17 1999 4 1 0 0 0 0 0 0 0 1 1 2 9 2000 4 3 2 0 0 0 0 0 0 0 0 0 9 2001 8 0 1 0 0 0 0 0 0 0 0 0 9 2002 4 2 0 0 0 0 0 0 0 0 0 7 13 2003 3 4 3 0 0 0 0 0 0 0 0 5 15 MEAN 4.8 3.2 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.3 2.8 13.2 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 33 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M NO. OF DAYS WITH DUST YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 0 0 0 0 0 0 0 0 0 0 0 0 0 1992 0 1 0 0 0 0 0 0 0 0 0 *** *** 1993 0 *** 0 1 4 1 0 0 0 0 1 0 *** 1994 0 0 0 6 3 2 0 3 0 0 0 1 15 1995 0 0 0 1 0 0 0 0 0 0 1 0 2 1996 1 2 2 1 0 0 1 0 1 0 0 0 8 1997 0 1 1 0 0 0 2 0 1 0 0 0 5 1998 0 0 0 0 0 0 0 0 0 0 0 0 0 1999 1 0 0 0 0 0 0 0 0 0 0 0 1 2000 1 0 0 0 0 1 0 0 0 0 1 0 3 2001 0 0 0 0 0 0 0 0 0 0 0 0 0 2002 0 1 0 0 0 0 0 0 0 0 0 0 1 2003 0 0 0 0 1 0 0 0 0 0 0 0 1 MEAN 0.2 0.4 0.2 0.7 0.6 0.3 0.2 0.2 0.2 0.0 0.2 0.1 3.3 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 34 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M PREVAILING WIND DIRECTION , SPEED (IN KNOTS) AND PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 180 180 180 180 270 180 180 180 180 180 180 180 180 PREVAIL. DIRECT. 3.6 4.3 4.9 6.2 14.0 5.9 6.3 5.6 5.6 5.7 5.0 3.9 5.5 PREVAIL. SPEED 21.3 27.1 21.9 25.3 25.8 36.0 52.3 62.6 52.0 40.6 33.3 20.0 34.6 PREVAIL. PERCENT 33.5 15.7 12.9 2.7 9.7 10.7 6.5 2.6 0.7 1.9 13.3 11.0 10.1 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 1992 180 270 180 270 270 180 180 180 180 180 225 *** *** PREVAIL. DIRECT. 5.4 9.0 5.0 10.9 8.2 6.9 6.7 5.7 5.5 4.8 5.8 ***** ***** PREVAIL. SPEED 20.6 19.3 23.2 19.3 24.5 34.7 47.1 50.3 39.3 28.4 22.0 ***** ***** PREVAIL. PERCENT 14.8 7.6 9.0 5.3 5.2 4.7 5.8 5.2 6.0 4.5 7.3 ***** ***** CALMS PERCENT 155 145 155 150 155 150 155 155 150 155 150 **** 1675 WIND OBSER. NO. 1993 225 *** 225 225 225 225 225 180 180 180 180 180 *** PREVAIL. DIRECT. 4.1 ***** 7.0 7.7 7.6 7.2 5.7 5.0 5.3 4.8 4.3 3.1 ***** PREVAIL. SPEED 28.4 ***** 21.3 30.7 27.7 49.3 39.3 44.5 34.0 44.5 34.7 37.4 ***** PREVAIL. PERCENT 14.8 ***** 2.6 4.7 7.1 2.0 4.0 5.8 8.0 11.0 13.3 22.6 ***** CALMS PERCENT 155 **** 155 150 155 150 150 155 150 155 150 155 1680 WIND OBSER. NO. 1994 180 180 225 180 225 180 180 180 180 180 45 180 180 PREVAIL. DIRECT. 4.2 4.2 8.3 6.2 9.0 7.2 6.2 6.5 5.7 5.1 5.8 4.6 5.8 PREVAIL. SPEED 23.2 23.6 24.5 28.7 26.6 38.7 52.3 51.6 50.0 31.0 18.7 23.4 32.2 PREVAIL. PERCENT 31.6 18.6 10.3 7.3 5.2 1.3 2.6 3.9 4.0 9.0 10.7 16.2 10.0 CALMS PERCENT 155 140 155 150 154 150 155 155 150 155 150 154 1823 WIND OBSER. NO. 1995 180 180 180 180 180 180 180 180 180 180 180 225 180 PREVAIL. DIRECT. 4.8 5.5 6.3 7.4 8.1 7.5 6.3 6.0 6.4 6.6 5.4 5.3 6.3 PREVAIL. SPEED 23.2 30.7 26.5 24.7 25.2 36.9 51.3 53.5 38.7 50.3 30.0 24.5 34.2 PREVAIL. PERCENT 24.5 17.9 14.2 8.7 20.0 12.1 14.1 9.7 14.7 10.3 13.3 17.4 14.7 CALMS PERCENT 155 140 155 150 155 149 156 155 150 155 150 155 1825 WIND OBSER. NO. 1996 180 180 180 225 225 180 180 180 180 180 180 180 180 PREVAIL. DIRECT. 4.9 5.3 5.4 8.0 8.1 8.0 7.6 6.4 6.9 5.7 5.4 4.3 6.2 PREVAIL. SPEED 23.9 27.6 22.6 28.0 22.6 37.3 38.1 43.2 32.7 34.8 42.0 26.5 30.7 PREVAIL. PERCENT 23.9 19.3 14.2 4.0 8.4 6.0 6.5 9.7 7.3 22.6 26.0 21.3 14.1 CALMS PERCENT 155 145 155 150 155 150 155 155 150 155 150 155 1830 WIND OBSER. NO. 1997 180 180 225 225 225 180 180 180 180 180 180 180 180 PREVAIL. DIRECT. 5.4 5.9 8.0 8.3 9.3 7.3 7.1 7.2 6.0 6.2 5.1 5.4 6.4 PREVAIL. SPEED 21.9 27.1 22.6 22.7 25.8 30.0 40.0 53.5 34.9 25.2 25.5 20.6 28.3 PREVAIL. PERCENT 18.1 10.7 11.0 4.0 5.8 11.3 12.9 11.0 17.4 18.7 39.6 42.6 17.0 CALMS PERCENT 155 140 155 150 155 150 155 155 149 155 149 155 1823 WIND OBSER. NO. 1998 180 180 225 180 180 180 180 180 180 180 180 180 180 PREVAIL. DIRECT. 4.9 5.4 8.5 7.1 6.7 8.1 7.1 6.8 6.2 6.0 6.3 4.9 6.4 PREVAIL. SPEED 18.1 25.0 15.5 24.0 21.9 40.0 38.7 36.6 34.7 38.7 28.0 23.2 28.6 PREVAIL. PERCENT 45.2 30.7 23.2 16.0 12.9 18.7 17.4 24.2 18.0 20.6 21.3 40.0 24.0 CALMS PERCENT 155 140 155 150 155 150 155 153 150 155 150 155 1823 WIND OBSER. NO. 1999 180 225 225 225 180 180 180 180 180 180 225 180 180 PREVAIL. DIRECT. 5.2 8.6 6.8 9.6 7.6 6.7 6.7 6.9 6.2 5.9 5.8 5.4 6.3 PREVAIL. SPEED 31.6 20.0 14.8 17.3 18.1 28.7 25.2 28.4 32.0 25.8 18.7 26.5 22.8 PREVAIL. PERCENT 35.5 19.3 41.3 36.0 21.9 28.0 32.9 29.7 19.3 28.4 44.7 53.5 32.7 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 2000 180 180 225 225 225 180 180 180 180 180 180 180 180 PREVAIL. DIRECT. 5.3 7.0 10.9 10.6 11.3 6.9 7.3 6.5 6.8 5.9 5.6 5.4 6.6 PREVAIL. SPEED 15.5 24.8 26.5 20.0 25.8 31.3 45.2 39.4 30.7 29.7 22.7 16.1 25.4 PREVAIL. PERCENT 43.2 29.0 17.4 19.3 21.9 18.7 20.0 14.8 23.3 33.5 49.3 52.3 28.6 CALMS PERCENT 155 145 155 150 155 150 155 155 150 155 150 155 1830 WIND OBSER. NO. 2001 180 225 180 225 180 180 180 180 180 180 180 180 180 PREVAIL. DIRECT. 4.8 9.6 6.1 9.9 7.6 7.4 6.2 6.9 7.2 6.3 6.3 7.1 6.6 PREVAIL. SPEED 18.7 20.7 27.1 24.7 17.4 22.7 24.5 33.5 28.7 20.6 18.7 18.7 21.7 PREVAIL. PERCENT 60.6 41.4 31.0 32.7 23.9 22.7 31.0 25.2 29.3 37.4 48.0 54.8 36.5 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 2002 180 180 180 270 270 180 180 180 180 180 180 180 180 PREVAIL. DIRECT. 6.4 7.8 7.3 9.7 15.0 8.3 8.0 6.8 6.5 7.5 6.6 6.0 7.4 PREVAIL. SPEED 18.7 20.7 16.8 22.7 21.9 31.3 42.6 29.0 28.0 27.7 16.7 12.9 21.9 PREVAIL. PERCENT 47.1 35.0 39.4 41.3 22.6 24.0 21.3 25.8 27.3 31.6 49.3 62.6 35.6 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 2003 225 270 270 270 180 180 180 180 180 180 180 180 180 PREVAIL. DIRECT. 5.7 10.0 10.4 10.6 8.5 8.0 7.1 7.9 7.1 6.6 6.3 6.2 7.2 PREVAIL. SPEED 13.5 12.1 19.4 18.7 23.9 30.7 46.5 56.8 49.3 33.5 32.7 20.6 27.2 PREVAIL. PERCENT 64.5 60.0 40.6 38.0 18.7 24.0 20.6 15.5 15.3 21.3 32.7 47.7 33.1 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 1991-2003 180 180 180 225 225 180 180 180 180 180 180 180 180 PREVAIL. DIRECT. 4.9 5.6 5.9 8.8 8.8 7.3 6.8 6.4 6.2 5.9 5.4 4.9 6.2 PREVAIL. SPEED 19.2 21.9 18.9 20.5 20.0 31.7 41.1 44.9 37.3 33.2 26.0 22.1 27.9 PREVAIL. PERCENT MEAN 35.2 25.4 20.5 16.9 14.1 14.2 15.1 14.1 14.7 19.3 28.4 36.8 21.2 CALMS PERCENT MEAN 155.0 141.2 155.0 150.0 154.9 149.9 154.7 154.8 149.9 155.0 149.9 154.9 1825.2 WIND OBSER. NO. =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 35 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M VECTOR WIND DIRECTION , MAGNITUDE (IN KNOTS) AND WIND STEADINESES (%) YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 224 215 224 239 252 213 186 182 204 201 215 300 217 VECTOR DIRECT. 1.3 1.7 1.3 3.8 5.1 2.5 4.0 3.4 3.4 2.8 2.2 1.0 2.4 WIND MAGNITUDE 46.4 42.5 29.5 50.7 63.7 43.9 71.4 68.0 59.6 51.9 47.8 23.3 45.3 STEADINESES(%) 1992 231 308 231 258 247 225 184 190 211 220 209 *** *** VECTOR DIRECT. 1.3 0.9 1.7 3.4 2.9 3.6 3.5 3.4 3.3 2.4 1.4 **** **** WIND MAGNITUDE 29.5 15.5 35.4 45.9 46.0 51.4 60.3 68.0 61.1 50.0 32.6 ***** ***** STEADINESES(%) 1993 237 *** 265 255 258 231 202 187 158 194 161 174 *** VECTOR DIRECT. 1.5 **** 2.6 4.1 4.3 4.1 3.4 3.3 2.8 2.5 1.6 1.4 **** WIND MAGNITUDE 48.4 ***** 41.3 60.3 61.4 62.1 68.0 73.3 65.1 59.5 43.2 58.3 ***** STEADINESES(%) 1994 210 231 225 233 226 204 179 162 194 206 242 233 207 VECTOR DIRECT. 1.7 3.3 2.8 2.9 3.8 3.7 4.0 4.1 3.7 2.2 0.4 2.2 2.7 WIND MAGNITUDE 50.0 62.3 48.3 42.6 52.8 53.6 70.2 73.2 71.2 44.0 8.0 45.8 48.2 STEADINESES(%) 1995 231 199 220 219 194 204 186 172 193 188 208 212 201 VECTOR DIRECT. 2.6 2.5 2.8 3.7 2.7 4.2 3.8 3.8 3.4 3.4 2.9 1.8 3.0 WIND MAGNITUDE 59.1 59.5 43.7 50.0 42.2 61.8 73.1 76.0 63.0 63.0 54.7 50.0 54.5 STEADINESES(%) 1996 202 202 229 236 232 202 198 185 213 202 190 226 208 VECTOR DIRECT. 1.2 2.4 1.2 3.4 2.9 4.1 4.0 3.9 3.5 3.2 2.6 1.5 2.7 WIND MAGNITUDE 30.0 52.2 20.7 45.9 42.6 57.7 58.0 70.9 54.7 62.7 59.1 34.9 47.4 STEADINESES(%) 1997 221 232 236 253 236 204 171 169 206 227 190 192 213 VECTOR DIRECT. 1.5 3.3 2.1 5.0 4.4 3.5 4.2 4.5 3.2 3.7 1.4 1.4 2.8 WIND MAGNITUDE 31.9 47.8 32.3 59.5 53.7 58.3 73.7 80.4 57.1 61.7 43.7 46.7 48.3 STEADINESES(%) 1998 209 207 256 228 226 171 192 184 198 202 212 188 202 VECTOR DIRECT. 1.4 1.9 2.1 3.3 2.3 4.1 4.1 3.6 2.9 3.3 2.4 1.5 2.6 WIND MAGNITUDE 46.7 48.7 36.8 53.2 35.9 67.2 67.2 70.6 54.7 64.7 46.2 48.4 51.0 STEADINESES(%) 1999 211 239 221 230 238 217 203 192 189 227 218 197 216 VECTOR DIRECT. 2.7 3.5 2.0 3.1 3.4 3.9 3.2 3.0 3.2 3.0 2.2 1.8 2.8 WIND MAGNITUDE 71.1 57.4 47.6 55.4 52.3 66.1 69.6 61.2 65.3 58.8 61.1 75.0 58.3 STEADINESES(%) 2000 196 198 241 241 233 177 173 166 164 185 188 208 199 VECTOR DIRECT. 1.8 2.8 3.7 4.5 4.9 3.4 4.4 4.0 3.1 2.4 1.4 1.5 2.7 WIND MAGNITUDE 48.6 51.9 49.3 58.4 64.5 60.7 80.0 72.7 62.0 60.0 45.2 57.7 50.9 STEADINESES(%) 2001 204 227 207 225 208 190 190 189 203 221 219 205 207 VECTOR DIRECT. 1.5 3.5 3.0 3.9 3.0 3.1 3.3 3.6 3.2 2.3 1.3 1.8 2.7 WIND MAGNITUDE 71.4 71.4 62.5 66.1 50.0 57.4 70.2 63.2 58.2 47.9 36.1 54.5 57.4 STEADINESES(%) 2002 222 237 222 267 237 220 172 186 204 196 215 228 216 VECTOR DIRECT. 1.9 2.6 3.0 3.5 4.6 4.2 4.6 3.1 3.4 2.7 1.7 1.5 2.7 WIND MAGNITUDE 48.7 47.3 57.7 64.8 56.1 58.3 75.4 63.3 68.0 51.9 48.6 55.6 51.9 STEADINESES(%) 2003 253 256 255 250 219 192 173 183 185 210 210 218 209 VECTOR DIRECT. 1.5 2.1 2.6 2.4 3.2 3.4 3.9 4.9 4.2 3.0 2.8 1.9 2.6 WIND MAGNITUDE 65.2 61.8 52.0 50.0 45.1 58.6 68.4 76.6 72.4 52.6 60.9 54.3 52.0 STEADINESES(%) 1991-2003 219 225 233 241 234 204 184 180 195 206 205 212 210 VECTOR DIRECT. 1.6 2.4 2.3 3.5 3.5 3.5 3.8 3.7 3.2 2.8 1.8 1.5 2.6 WIND MAGNITUDE 45.7 48.0 41.1 52.2 50.0 55.6 67.9 69.8 60.4 54.9 42.9 45.5 50.0 STEADINESES(%) =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 36 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF WIND SPEED IN KNOTS YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 2.8 4.0 4.4 7.5 8.0 5.7 5.6 5.0 5.7 5.4 4.6 4.3 5.3 1992 4.4 5.8 4.8 7.4 6.3 7.0 5.8 5.0 5.4 4.8 4.3 ***** ****** 1993 3.1 ***** 6.3 6.8 7.0 6.6 5.0 4.5 4.3 4.2 3.7 2.4 ****** 1994 3.4 5.3 5.8 6.8 7.2 6.9 5.7 5.6 5.2 5.0 5.0 4.8 5.6 1995 4.4 4.2 6.4 7.4 6.4 6.8 5.2 5.0 5.4 5.4 5.3 3.6 5.5 1996 4.0 4.6 5.8 7.4 6.8 7.1 6.9 5.5 6.4 5.1 4.4 4.3 5.7 1997 4.7 6.9 6.5 8.4 8.2 6.0 5.7 5.6 5.6 6.0 3.2 3.0 5.8 1998 3.0 3.9 5.7 6.2 6.4 6.1 6.1 5.1 5.3 5.1 5.2 3.1 5.1 1999 3.8 6.1 4.2 5.6 6.5 5.9 4.6 4.9 4.9 5.1 3.6 2.4 4.8 2000 3.7 5.4 7.5 7.7 7.6 5.6 5.5 5.5 5.0 4.0 3.1 2.6 5.3 2001 2.1 4.9 4.8 5.9 6.0 5.4 4.7 5.7 5.5 4.8 3.6 3.3 4.7 2002 3.9 5.5 5.2 5.4 8.2 7.2 6.1 4.9 5.0 5.2 3.5 2.7 5.2 2003 2.3 3.4 5.0 4.8 7.1 5.8 5.7 6.4 5.8 5.7 4.6 3.5 5.0 MEAN 3.5 5.0 5.6 6.7 7.0 6.3 5.6 5.3 5.3 5.1 4.2 3.3 5.2 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 37 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M FASTEST WIND DIRECTION AND SPEED IN KNOTS YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 270 280 270 320 300 270 250 180 290 350 270 270 320 DIRECTION 33 35 29 49 47 31 25 25 31 27 29 29 49 SPEED 27 4 7 26 16 8 8 10 24 28 19 4 DAY 1992 270 310 300 290 20 330 270 20 270 240 240 *** *** DIRECTION 23 39 29 33 39 39 37 35 29 25 33 ** ** SPEED 14 14 22 21 17 9 9 12 21 26 26 ** DAY 1993 270 *** 320 300 280 190 50 330 220 240 280 240 *** DIRECTION 23 ** 33 39 41 56 14 19 21 31 33 17 ** SPEED 25 ** 9 20 23 3 28 8 26 11 10 10 DAY 1994 270 270 280 270 320 140 140 150 220 270 240 270 320 DIRECTION 33 33 37 39 45 37 21 21 23 31 41 31 45 SPEED 4 3 7 27 4 1 5 30 20 2 25 5 DAY 1995 250 320 290 160 290 230 210 210 290 190 270 220 290 DIRECTION 35 31 39 35 45 37 17 16 33 25 39 21 45 SPEED 17 8 17 23 8 7 1 2 21 11 25 2 DAY 1996 260 260 190 300 280 270 360 360 300 250 270 320 360 DIRECTION 25 23 31 41 41 35 43 27 27 39 27 27 43 SPEED 6 28 31 21 28 14 18 25 8 11 3 17 DAY 1997 320 300 270 270 270 310 90 160 290 240 170 280 310 DIRECTION 39 29 31 41 45 49 31 16 25 31 27 25 49 SPEED 28 22 20 9 4 13 16 6 25 12 6 24 DAY 1998 270 270 190 300 360 270 270 190 360 330 270 250 190 DIRECTION 23 31 45 43 39 35 33 39 39 35 35 27 45 SPEED 30 8 29 24 12 7 29 2 13 7 28 31 DAY 1999 170 310 310 300 120 300 210 210 270 360 270 300 360 DIRECTION 25 23 21 31 33 37 35 37 31 41 31 33 41 SPEED 10 21 18 29 18 3 14 31 26 12 20 15 DAY 2000 220 270 270 230 250 20 360 80 270 220 300 260 20 DIRECTION 35 33 35 45 35 51 23 27 35 31 27 23 51 SPEED 21 25 24 9 20 17 11 31 29 31 23 25 DAY 2001 210 250 180 180 230 240 240 360 280 280 240 220 250 DIRECTION 19 45 37 43 39 25 31 35 33 43 33 31 45 SPEED 1 21 25 9 15 7 18 7 26 25 18 21 DAY 2002 220 300 220 280 300 180 120 70 70 170 320 300 280 DIRECTION 37 31 35 43 39 35 37 21 27 31 33 31 43 SPEED 8 25 15 21 11 7 24 6 21 22 25 26 DAY 2003 300 250 330 270 200 250 130 260 250 270 270 290 330 DIRECTION 16 19 39 29 39 31 21 37 25 33 29 35 39 SPEED 6 5 13 30 19 4 18 22 13 2 20 10 DAY 1991-2003 320 250 190 320 300 190 360 190 360 280 240 290 190 DIRECTION 39 45 45 49 47 56 43 39 39 43 41 35 56 SPEED 97-28 1-21 98-29 91-26 91-16 93- 3 96-18 98- 2 98-13 1-25 94-25 3-10 93 YEAR-DAY =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 38 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M NO. OF CLEAR DAYS (0-2)/8 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 8 9 3 10 17 24 30 31 29 17 20 15 213 1992 10 9 12 10 10 24 28 27 29 27 15 *** *** 1993 18 *** 15 8 9 27 27 30 28 18 9 13 *** 1994 14 12 11 16 18 28 31 29 22 10 11 13 215 1995 24 12 19 7 13 24 27 29 26 22 19 15 237 1996 11 7 8 8 14 23 23 25 29 22 17 8 195 1997 18 20 11 14 15 19 24 30 30 22 9 12 224 1998 11 10 10 12 16 26 17 23 24 24 14 7 194 1999 12 16 14 11 23 26 24 25 29 25 13 13 231 2000 16 19 20 15 26 30 23 22 27 18 10 7 233 2001 13 13 13 15 15 26 26 29 25 19 14 9 217 2002 11 13 14 6 18 28 26 29 27 21 15 9 217 2003 12 6 7 4 13 24 24 30 28 18 15 8 189 MEAN 13.7 12.2 12.1 10.5 15.9 25.3 25.4 27.6 27.2 20.2 13.9 10.7 214.7 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 39 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M NO. OF PARTLY CLOUDY DAYS (3-6)/8 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 16 7 14 18 13 6 1 0 1 11 10 7 104 1992 16 14 12 14 13 6 3 3 1 3 13 *** *** 1993 6 *** 11 17 16 3 4 1 2 11 10 9 *** 1994 8 13 15 10 11 2 0 2 8 18 10 12 109 1995 2 10 6 15 13 6 4 2 4 8 11 10 91 1996 9 13 8 14 14 7 8 6 1 8 13 20 121 1997 7 7 12 11 15 11 7 1 0 5 11 11 98 1998 6 8 11 14 10 4 14 7 6 4 10 14 108 1999 10 9 6 17 7 2 6 6 0 4 12 9 88 2000 5 6 6 9 4 0 8 9 1 6 12 12 78 2001 5 10 12 8 14 3 5 2 4 12 9 13 97 2002 15 11 14 14 9 2 5 2 3 9 7 8 99 2003 10 11 16 11 15 6 7 1 2 7 8 14 108 MEAN 8.8 9.9 11.0 13.2 11.8 4.5 5.5 3.2 2.5 8.2 10.5 11.6 100.7 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 40 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M NO. OF CLOUDY DAYS (7-8)/8 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 7 12 14 2 1 0 0 0 0 3 0 9 48 1992 5 6 7 6 8 0 0 1 0 1 2 *** *** 1993 7 *** 5 5 6 0 0 0 0 2 11 9 *** 1994 9 3 5 4 2 0 0 0 0 3 9 6 41 1995 5 6 6 8 5 0 0 0 0 1 0 6 37 1996 11 9 15 8 3 0 0 0 0 1 0 3 50 1997 6 1 8 5 1 0 0 0 0 4 10 8 43 1998 14 10 10 4 5 0 0 1 0 3 6 10 63 1999 9 3 11 2 1 2 1 0 1 2 5 9 46 2000 10 4 5 6 1 0 0 0 2 7 8 12 55 2001 13 5 6 7 2 1 0 0 1 0 7 9 51 2002 5 4 3 10 4 0 0 0 0 1 8 14 49 2003 9 11 8 15 3 0 0 0 0 6 7 9 68 MEAN 8.5 6.2 7.9 6.3 3.2 0.2 0.1 0.2 0.3 2.6 5.6 8.7 49.8 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 41 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M NO. OF DAYS WITH VISIBILITY LESS THAN OR EQUAL 2 KM YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 13 5 2 0 0 0 0 0 0 0 0 5 25 1992 9 1 3 0 1 0 1 0 0 0 0 *** *** 1993 1 *** 0 0 0 1 0 0 0 0 2 2 *** 1994 2 1 0 0 0 0 0 0 0 0 0 2 5 1995 3 1 0 1 0 0 0 0 1 0 0 4 10 1996 4 4 5 0 0 0 0 0 1 0 0 0 14 1997 0 0 0 0 0 0 0 0 1 0 1 3 5 1998 6 6 2 0 0 0 0 0 0 0 0 10 24 1999 6 1 1 0 0 0 0 1 0 0 7 15 31 2000 7 2 0 1 3 0 0 0 0 3 6 12 34 2001 7 0 2 0 0 0 1 0 0 0 4 12 26 2002 8 2 0 2 0 0 0 0 0 0 0 12 24 2003 5 5 0 1 0 0 0 0 0 0 0 9 20 MEAN 5.5 2.3 1.2 0.4 0.3 0.1 0.2 0.1 0.2 0.2 1.5 7.2 19.2 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 42 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MONTHLY TOTAL OF SUNSHINE HOURS YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 126.9 111.8 115.5 220.7 269.7 329.8 348.1 346.6 302.6 216.3 181.4 109.5 2678.9 1992 112.4 108.2 157.6 147.4 179.5 309.5 332.2 318.4 308.4 270.4 155.7 ***** ****** 1993 148.4 ***** 197.2 188.7 240.8 356.5 347.3 346.2 308.0 227.7 126.1 144.0 ****** 1994 150.6 164.9 216.6 220.2 285.3 341.4 368.7 354.9 271.7 214.9 170.8 170.8 2930.8 1995 218.9 186.4 247.4 228.7 254.8 347.8 356.5 364.1 318.0 280.4 247.5 155.9 3206.4 1996 121.1 132.8 139.7 202.9 286.0 345.5 332.1 354.7 311.3 273.9 219.5 172.6 2892.1 1997 206.8 252.3 189.3 249.2 301.9 308.5 343.5 358.2 324.7 263.0 111.1 146.5 3055.0 1998 130.2 148.4 187.2 264.3 260.2 350.8 337.0 331.6 308.9 272.9 212.9 156.0 2960.4 1999 166.1 216.5 205.0 252.8 330.2 351.9 344.0 332.6 316.9 261.7 206.5 168.6 3152.8 2000 177.8 205.8 255.9 246.0 332.4 362.0 331.3 340.9 294.8 221.4 157.0 111.5 3036.8 2001 149.8 207.9 234.7 255.2 304.8 344.4 345.1 338.3 297.3 261.2 166.9 134.9 3040.5 2002 160.8 219.2 214.1 172.7 305.2 350.9 362.1 361.1 318.5 275.7 178.0 125.8 3044.1 2003 155.3 132.5 201.6 159.2 280.3 342.0 345.3 363.7 316.7 258.2 202.1 135.9 2892.8 MEAN 155.8 173.9 197.1 216.0 279.3 341.6 345.6 347.0 307.5 253.7 179.7 144.3 2941.5 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 43 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF QFE PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 860.0 860.1 858.0 858.6 855.6 855.8 854.2 855.7 860.0 862.9 863.2 859.2 858.6 1992 859.3 856.2 858.1 856.6 858.8 855.4 855.0 857.8 860.3 861.7 862.4 ****** ****** 1993 860.3 ****** 858.5 857.4 858.1 856.0 856.1 857.8 858.9 864.9 861.6 862.9 ****** 1994 860.1 857.2 857.9 859.2 858.1 853.9 852.8 854.6 862.2 863.7 860.3 861.4 858.5 1995 861.4 858.9 858.3 857.3 859.5 855.2 852.2 855.7 858.0 862.0 860.9 862.4 858.5 1996 861.2 857.6 856.4 858.3 858.8 855.9 857.3 857.3 857.0 861.7 864.7 862.7 859.1 1997 858.6 858.9 855.2 856.6 859.0 855.7 852.9 856.3 859.7 861.4 863.0 860.4 858.1 1998 858.2 858.5 857.5 858.2 859.0 858.6 854.7 858.0 858.8 862.5 862.9 864.2 859.3 1999 860.7 858.7 857.4 858.2 857.6 855.1 854.3 857.2 857.9 861.2 861.3 864.7 858.7 2000 858.6 858.8 857.4 858.0 856.0 855.2 856.6 857.0 858.0 862.1 863.3 861.6 858.6 2001 861.5 859.0 858.6 857.8 856.5 854.7 854.7 857.4 859.3 861.5 861.5 862.5 858.7 2002 860.6 859.7 858.4 856.0 856.6 855.4 856.2 855.2 859.9 862.0 862.8 859.3 858.5 2003 859.2 855.7 856.6 857.7 858.5 854.2 851.7 856.5 858.3 860.4 862.0 862.3 857.7 MEAN 860.0 858.3 857.5 857.7 857.9 855.5 854.5 856.7 859.1 862.2 862.3 862.0 858.6 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 44 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MAX. OF QFE PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 868.8 871.0 865.1 863.8 862.6 863.2 858.6 860.7 866.4 867.3 868.4 867.9 871.0 DAY-HOUR 12- 6 15- 6 29- 6 19- 6 25- 6 23- 6 1- 6 23- 6 27- 6 13- 6 24- 6 17- 6 1992 869.4 864.2 868.1 861.1 864.1 861.9 859.0 865.3 865.9 867.1 871.3 ****** ****** DAY-HOUR 10- 6 16- 6 12- 6 20- 6 2- 9 11- 6 6- 6 31- 6 2- 6 30- 6 4- 6 **-** 1993 870.3 ****** 866.6 865.9 864.7 864.9 862.4 862.6 865.6 870.8 868.5 868.7 ****** DAY-HOUR 6- 6 **-** 31- 6 1- 6 9- 6 23- 6 27- 6 31- 6 23- 6 17- 6 22- 6 26- 6 1994 869.9 865.1 864.8 870.3 863.9 860.3 858.0 859.6 870.5 869.8 868.2 868.2 870.5 DAY-HOUR 10- 6 18- 6 18- 6 5- 6 21- 6 9- 6 13- 6 16- 6 23- 6 10- 6 2- 6 22- 6 1995 870.1 865.6 867.9 863.7 865.9 861.2 857.2 861.5 865.5 871.0 868.5 867.7 871.0 DAY-HOUR 7- 6 12- 6 3- 6 11- 6 26- 6 1- 6 4- 6 25- 6 13- 6 27- 6 16- 6 11- 6 1996 869.4 864.4 861.4 865.1 863.2 860.3 863.6 865.1 866.2 871.0 874.6 869.9 874.6 DAY-HOUR 10- 6 13- 6 6- 6 5- 6 7- 6 27- 6 4- 6 30- 6 25- 6 2- 6 18- 6 2- 6 1997 867.4 866.9 869.3 863.4 866.4 860.9 857.5 861.1 866.0 867.5 872.9 868.6 872.9 DAY-HOUR 19- 6 17- 6 11- 6 23- 6 12- 6 11- 6 9- 6 24- 6 19- 6 9- 6 8- 6 29- 6 1998 866.9 871.3 865.4 868.6 867.2 864.4 863.5 863.2 864.0 870.1 870.5 870.5 871.3 DAY-HOUR 4- 6 23- 6 27- 6 12- 6 8- 6 17- 6 20- 6 25- 6 13- 6 10- 6 21- 6 10- 6 1999 872.3 867.0 864.5 863.3 865.0 861.1 860.6 864.1 864.5 865.8 868.4 871.6 872.3 DAY-HOUR 2- 6 12- 6 31- 6 11- 6 28- 6 9- 6 19- 3 20- 6 29- 6 27- 6 30-15 6- 6 2000 866.0 866.3 865.0 863.8 861.8 861.2 864.1 862.4 864.0 868.2 873.0 868.8 873.0 DAY-HOUR 31- 6 11- 6 27- 6 2- 6 5- 6 16- 6 30- 6 23- 6 29-12 16- 6 17- 6 4- 6 2001 865.8 869.0 868.2 866.6 861.0 862.6 862.0 862.6 866.6 870.2 868.9 867.6 870.2 DAY-HOUR 17- 6 9- 9 1- 6 2- 6 1- 6 2- 6 29- 6 14- 6 22- 6 10- 6 2- 6 10- 6 2002 868.2 868.2 871.0 864.8 862.4 863.5 861.4 861.0 865.2 867.7 870.4 870.1 871.0 DAY-HOUR 26- 6 6- 6 11- 6 1- 6 17- 6 25- 6 29- 6 31- 6 21- 6 10- 6 18- 6 3- 6 2003 866.1 861.8 866.2 864.0 866.5 859.5 858.5 861.1 866.2 866.5 871.9 871.4 871.9 DAY-HOUR 12- 6 12- 6 2- 6 8- 6 2- 6 7- 6 4- 6 30- 6 23- 6 15- 6 25- 6 12- 6 1991-2003 872.3 871.3 871.0 870.3 867.2 864.9 864.1 865.3 870.5 871.0 874.6 871.6 874.6 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 93-23 0-30 92-31 94-23 95-27 96-18 99- 6 96-18 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 45 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MIN. OF QFE PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 850.2 852.6 847.5 848.6 847.9 847.1 848.4 849.9 852.8 858.2 856.5 851.2 847.1 DAY-HOUR 25-12 4-12 7- 3 4-15 22-15 11-15 13-15 12-15 8-15 4-12 5-12 25-12 1992 851.0 848.0 847.0 850.0 853.6 849.0 849.8 850.7 854.1 856.6 852.0 ****** ****** DAY-HOUR 30-12 24-15 31- 3 18- 3 4- 9 27-12 10-15 1-15 17-15 5-15 26- 3 **-** 1993 850.2 ****** 849.4 850.4 853.5 849.6 850.6 850.8 853.7 857.0 851.5 854.5 ****** DAY-HOUR 9- 3 **-** 22- 3 13-12 7-12 3-15 12-15 12-15 3-15 1-15 14- 9 4-15 1994 849.8 848.5 847.8 850.9 851.3 847.6 848.2 848.1 855.1 856.8 849.9 847.4 847.4 DAY-HOUR 16-12 1- 3 7-12 2-15 1-15 4-15 8-15 2-15 2-15 14-15 26- 3 4- 3 1995 854.4 847.9 848.5 850.9 854.5 847.8 846.3 851.6 850.9 853.3 851.8 856.8 846.3 DAY-HOUR 11-12 5-15 26-12 16-15 7-12 22-15 16-15 22-15 19-15 12-15 25-15 17-15 1996 852.9 847.6 850.0 851.4 853.3 850.6 850.1 851.3 850.5 851.7 858.3 856.4 847.6 DAY-HOUR 6-12 5-12 13-12 10-12 28-15 5-15 7-15 8-15 20-15 27-15 28-12 25-12 1997 848.1 852.9 845.0 847.3 850.9 849.3 847.7 850.2 852.4 856.4 858.5 852.0 845.0 DAY-HOUR 17-15 5-15 29-15 10-15 4-12 24-15 16-15 5-15 2-15 23-12 19-12 10- 3 1998 844.7 847.0 847.6 850.8 850.5 852.7 847.0 853.2 853.0 855.0 857.6 856.6 844.7 DAY-HOUR 13- 9 14- 3 18-12 23-12 29-15 29-15 5-15 22-15 5-15 1-15 1-12 21-12 1999 851.6 850.0 850.5 848.0 846.0 845.5 850.0 852.0 852.2 856.0 853.8 856.7 845.5 DAY-HOUR 9-12 21- 3 21-15 8-15 20-15 25-15 22-15 13-15 16-12 31-15 26- 9 15-12 2000 849.0 848.4 851.2 853.8 850.5 847.4 849.6 850.0 850.0 857.0 857.0 853.0 847.4 DAY-HOUR 21-12 7- 3 24-12 10-12 26-15 24-15 11-15 30-15 1-15 1-12 21-12 15-12 2001 856.4 843.4 846.8 850.0 850.0 847.6 847.4 850.6 852.7 855.6 850.4 855.4 843.4 DAY-HOUR 19-12 21-12 25-12 12-12 29-15 6-15 10-15 27-12 5-15 31-15 18-12 5- 9 2002 852.1 851.2 850.0 846.6 851.1 847.1 848.8 849.2 855.1 856.4 855.6 847.1 846.6 DAY-HOUR 8- 3 25-12 22-15 3-12 12-15 20-15 24-15 17-15 10-12 21-12 13-12 21-15 2003 846.5 845.8 843.6 851.9 852.2 847.0 847.0 851.7 851.9 853.8 854.0 852.9 843.6 DAY-HOUR 28-15 19- 3 26-12 27-15 28-15 30-15 30-15 1- 3 7-12 27-15 14-12 6-12 1991-2003 844.7 843.4 843.6 846.6 846.0 845.5 846.3 848.1 850.0 851.7 849.9 847.1 843.4 YEAR-DAY 98-13 1-21 3-26 2- 3 99-20 99-25 95-16 94- 2 0- 1 96-27 94-26 2-21 1-21 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 46 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF QNH PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 1019.9 1019.9 1017.5 1018.2 1014.8 1015.0 1013.1 1014.9 1019.8 1023.2 1023.5 1018.9 1018.2 1992 1019.0 1015.4 1017.6 1016.0 1018.4 1014.5 1014.1 1017.3 1020.2 1021.8 1022.5 ****** ****** 1993 1020.2 ****** 1018.1 1016.9 1017.6 1015.3 1015.4 1017.3 1018.6 1025.4 1021.7 1023.2 ****** 1994 1020.0 1016.6 1017.4 1018.9 1017.6 1012.8 1011.5 1013.7 1022.4 1024.1 1020.1 1021.4 1018.0 1995 1021.4 1018.6 1017.8 1016.7 1019.2 1014.3 1010.9 1014.9 1017.5 1022.1 1020.8 1022.5 1018.1 1996 1021.2 1017.1 1015.7 1017.9 1018.4 1015.1 1016.7 1016.7 1016.4 1021.7 1025.2 1022.9 1018.7 1997 1018.3 1018.5 1014.3 1015.9 1018.7 1014.8 1011.7 1015.5 1019.4 1021.5 1023.3 1020.3 1017.7 1998 1017.7 1018.1 1017.0 1017.7 1018.7 1018.2 1013.7 1017.5 1018.5 1022.7 1023.1 1024.6 1019.0 1999 1020.6 1018.3 1016.8 1017.7 1017.0 1014.1 1013.2 1016.5 1017.4 1021.2 1021.3 1025.2 1018.3 2000 1018.2 1018.5 1016.9 1017.6 1015.2 1014.3 1015.9 1016.4 1017.6 1022.2 1023.7 1021.6 1018.2 2001 1021.6 1018.7 1018.2 1017.3 1015.8 1013.7 1013.8 1016.8 1019.0 1021.5 1021.5 1022.7 1018.4 2002 1020.5 1019.4 1018.0 1015.2 1016.0 1014.5 1015.5 1014.3 1019.7 1022.1 1023.0 1019.0 1018.1 2003 1018.9 1014.8 1015.9 1017.2 1018.1 1013.2 1010.3 1015.8 1017.9 1020.3 1022.1 1022.4 1017.2 MEAN 1019.8 1017.8 1017.0 1017.2 1017.4 1014.6 1013.5 1016.0 1018.8 1022.3 1022.4 1022.1 1018.2 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 47 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MAX. OF QNH PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 1029.9 1032.4 1025.7 1024.2 1022.8 1023.5 1018.2 1020.6 1027.2 1028.2 1029.5 1028.9 1032.4 DAY-HOUR 12- 6 15- 6 29- 6 19- 6 25- 6 23- 6 1- 6 23- 6 27- 6 13- 6 24- 6 17- 6 1992 1030.6 1024.6 1029.1 1021.1 1024.5 1022.0 1018.7 1025.9 1026.6 1028.0 1032.8 ****** ****** DAY-HOUR 10- 6 16- 6 12- 6 20- 6 2- 9 11- 6 6- 6 31- 6 2- 6 30- 6 4- 6 **-** 1993 1031.6 ****** 1027.4 1026.6 1025.2 1025.4 1022.6 1022.8 1026.2 1032.2 1029.6 1029.8 ****** DAY-HOUR 6- 6 **-** 31- 6 1- 6 9- 6 23- 6 27- 6 31- 6 23- 6 17- 6 22- 6 26- 6 1994 1031.2 1025.7 1025.3 1031.6 1024.3 1020.2 1017.5 1019.4 1031.9 1031.1 1029.2 1029.2 1031.9 DAY-HOUR 10- 6 18- 6 18- 6 5- 6 21- 6 9- 6 13- 6 16- 6 23- 6 10- 6 2- 6 22- 6 1995 1031.4 1026.2 1028.9 1024.1 1026.6 1021.2 1016.6 1021.5 1026.1 1032.4 1029.6 1028.7 1032.4 DAY-HOUR 7- 6 12- 6 3- 6 11- 6 26- 6 1- 6 4- 6 25- 6 13- 6 27- 6 16- 6 11- 6 1996 1030.6 1024.9 1021.4 1025.7 1023.5 1020.2 1024.0 1025.7 1026.9 1032.4 1036.6 1031.2 1036.6 DAY-HOUR 10- 6 13- 6 6- 6 5- 6 7- 6 27- 6 4- 6 30- 6 25- 6 2- 6 18- 6 2- 6 1997 1028.3 1027.7 1030.5 1023.7 1027.2 1020.8 1016.9 1021.1 1026.7 1028.4 1034.6 1029.7 1034.6 DAY-HOUR 19- 6 17- 6 11- 6 23- 6 12- 6 11- 6 9- 6 24- 6 19- 6 9- 6 8- 6 29- 6 1998 1027.7 1032.8 1026.0 1029.7 1028.1 1024.9 1023.8 1023.5 1024.4 1031.4 1031.9 1031.9 1032.8 DAY-HOUR 4- 6 23- 6 27- 6 12- 6 8- 6 17- 6 20- 6 25- 6 13- 6 10- 6 21- 6 10- 6 1999 1033.9 1027.9 1025.0 1023.6 1025.6 1021.1 1020.5 1024.5 1025.0 1026.5 1029.5 1033.1 1033.9 DAY-HOUR 2- 6 12- 6 31- 6 11- 6 28- 6 9- 6 19- 3 20- 6 29- 6 27- 6 30-15 6- 6 2000 1026.7 1027.1 1025.6 1024.2 1021.9 1021.2 1024.5 1022.6 1024.4 1029.2 1034.7 1029.9 1034.7 DAY-HOUR 31- 6 11- 6 27- 6 2- 6 5- 6 16- 6 30- 6 23- 6 29-12 16- 6 17- 6 4- 6 2001 1026.5 1030.2 1029.2 1027.4 1021.0 1022.8 1022.1 1022.8 1027.4 1031.5 1030.0 1028.5 1031.5 DAY-HOUR 17- 6 9- 9 1- 6 2- 6 1- 6 2- 6 29- 6 14- 6 22- 6 10- 6 2- 6 10- 6 2002 1029.2 1029.2 1032.4 1025.3 1022.6 1023.8 1021.4 1021.0 1025.8 1028.7 1031.8 1031.4 1032.4 DAY-HOUR 26- 6 6- 6 11- 6 1- 6 17- 6 25- 6 29- 6 31- 6 21- 6 10- 6 18- 6 3- 6 2003 1026.8 1021.9 1026.9 1024.4 1027.3 1019.2 1018.1 1021.1 1026.9 1027.3 1033.5 1032.9 1033.5 DAY-HOUR 12- 6 12- 6 2- 6 8- 6 2- 6 7- 6 4- 6 30- 6 23- 6 15- 6 25- 6 12- 6 1991-2003 1033.9 1032.8 1032.4 1031.6 1028.1 1025.4 1024.5 1025.9 1031.9 1032.4 1036.6 1033.1 1036.6 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 93-23 0-30 92-31 94-23 95-27 96-18 99- 6 96-18 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 48 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MIN. OF QNH PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 1008.6 1011.3 1005.5 1006.7 1005.9 1005.0 1006.5 1008.2 1011.5 1017.8 1015.8 1009.7 1005.0 DAY-HOUR 25-12 4-12 7- 3 4-15 22-15 11-15 13-15 12-15 8-15 4-12 5-12 25-12 1992 1009.5 1006.0 1004.9 1008.3 1012.5 1007.2 1008.1 1009.1 1013.0 1015.9 1010.6 ****** ****** DAY-HOUR 30-12 24-15 31- 3 18- 3 4- 9 27-12 10-15 1-15 17-15 5-15 26- 3 **-** 1993 1008.6 ****** 1007.6 1008.8 1012.4 1007.9 1009.0 1009.3 1012.6 1016.4 1010.1 1013.5 ****** DAY-HOUR 9- 3 **-** 22- 3 13-12 7-12 3-15 12-15 12-15 3-15 1-15 14- 9 4-15 1994 1008.1 1006.6 1005.8 1009.4 1009.8 1005.6 1006.3 1006.1 1014.2 1016.1 1008.2 1005.3 1005.3 DAY-HOUR 16-12 1- 3 7-12 2-15 1-15 4-15 8-15 2-15 2-15 14-15 26- 3 4- 3 1995 1013.4 1005.9 1006.6 1009.4 1013.5 1005.8 1004.1 1010.2 1009.4 1012.1 1010.4 1016.1 1004.1 DAY-HOUR 11-12 5-15 26-12 16-15 7-12 22-15 16-15 22-15 19-15 12-15 25-15 17-15 1996 1011.7 1005.6 1008.3 1009.9 1012.1 1009.0 1008.4 1009.8 1008.9 1010.3 1017.9 1015.7 1005.6 DAY-HOUR 6-12 5-12 13-12 10-12 28-15 5-15 7-15 8-15 20-15 27-15 28-12 25-12 1997 1006.1 1011.7 1002.6 1005.2 1009.4 1007.5 1005.7 1008.6 1011.1 1015.7 1018.1 1010.6 1002.6 DAY-HOUR 17-15 5-15 29-15 10-15 4-12 24-15 16-15 5-15 2-15 23-12 19-12 10- 3 1998 1002.2 1004.9 1005.6 1009.3 1008.9 1011.4 1004.9 1012.0 1011.8 1014.1 1017.1 1015.9 1002.2 DAY-HOUR 13- 9 14- 3 18-12 23-12 29-15 29-15 5-15 22-15 5-15 1-15 1-12 21-12 1999 1010.2 1008.3 1008.9 1006.0 1003.7 1003.2 1008.3 1010.6 1010.9 1015.2 1012.7 1016.0 1003.2 DAY-HOUR 9-12 21- 3 21-15 8-15 20-15 25-15 22-15 13-15 16-12 31-15 26- 9 15-12 2000 1007.2 1006.5 1009.7 1012.7 1008.9 1005.3 1007.9 1008.3 1008.3 1016.4 1016.4 1011.8 1005.3 DAY-HOUR 21-12 7- 3 24-12 10-12 26-15 24-15 11-15 30-15 1-15 1-12 21-12 15-12 2001 1015.7 1000.8 1004.7 1008.3 1008.3 1005.6 1005.3 1009.0 1011.4 1014.8 1008.8 1014.5 1000.8 DAY-HOUR 19-12 21-12 25-12 12-12 29-15 6-15 10-15 27-12 5-15 31-15 18-12 5- 9 2002 1010.7 1009.7 1008.3 1004.4 1009.6 1005.0 1007.0 1007.4 1014.2 1015.7 1014.8 1005.0 1004.4 DAY-HOUR 8- 3 25-12 22-15 3-12 12-15 20-15 24-15 17-15 10-12 21-12 13-12 21-15 2003 1004.3 1003.5 1001.0 1010.5 1010.9 1004.9 1004.9 1010.3 1010.5 1012.7 1012.9 1011.7 1001.0 DAY-HOUR 28-15 19- 3 26-12 27-15 28-15 30-15 30-15 1- 3 7-12 27-15 14-12 6-12 1991-2003 1002.2 1000.8 1001.0 1004.4 1003.7 1003.2 1004.1 1006.1 1008.3 1010.3 1008.2 1005.0 1000.8 YEAR-DAY 98-13 1-21 3-26 2- 3 99-20 99-25 95-16 94- 2 0- 1 96-27 94-26 2-21 1-21 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 49 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF QFF PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 1022.9 1023.1 1017.2 1013.0 1007.6 1004.3 1000.6 1002.8 1010.1 1017.7 1021.4 1020.9 1013.5 1992 1023.8 1018.2 1019.5 1012.3 1013.1 1004.3 1001.0 1006.4 1011.7 1016.5 1020.5 ****** ****** 1993 1024.6 ****** 1018.3 1012.3 1010.6 1004.5 1003.1 1005.6 1008.4 1021.0 1021.8 1024.4 ****** 1994 1021.8 1018.4 1015.4 1013.7 1010.3 1001.8 998.5 1000.8 1014.2 1019.5 1018.0 1024.5 1013.1 1995 1022.6 1019.2 1016.2 1012.2 1012.2 1003.9 997.1 1001.6 1008.0 1017.0 1018.1 1025.5 1012.8 1996 1025.1 1018.1 1016.9 1014.2 1010.6 1004.0 1004.3 1003.1 1004.6 1015.3 1023.0 1022.1 1013.4 1997 1018.4 1019.4 1013.6 1010.8 1010.1 1002.8 997.4 1001.7 1008.8 1013.5 1020.9 1020.6 1011.5 1998 1020.3 1019.3 1015.0 1011.2 1010.1 1005.5 999.7 1004.1 1007.1 1015.1 1018.0 1022.3 1012.3 1999 1021.6 1016.9 1014.4 1011.5 1007.1 1001.0 1000.1 1002.7 1006.3 1013.2 1019.2 1024.9 1011.6 2000 1019.4 1018.9 1014.9 1009.7 1004.4 1001.7 1002.3 1002.8 1005.8 1015.9 1022.0 1022.0 1011.6 2001 1023.1 1018.6 1014.0 1009.5 1005.7 1001.0 1000.1 1003.6 1008.3 1014.2 1018.8 1021.8 1011.5 2002 1021.9 1018.6 1014.5 1010.3 1007.2 1002.7 1002.1 1000.2 1007.7 1013.0 1019.9 1020.9 1011.6 2003 1019.3 1015.0 1014.3 1011.5 1010.1 1001.0 995.2 1002.3 1006.9 1011.5 1019.7 1023.3 1010.8 MEAN 1021.9 1018.6 1015.7 1011.7 1009.2 1003.0 1000.1 1002.9 1008.3 1015.6 1020.1 1022.8 1012.5 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 50 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MAX. OF QFF PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 1033.1 1039.5 1028.6 1023.1 1020.5 1013.6 1007.2 1009.5 1022.2 1023.1 1029.7 1033.3 1039.5 DAY-HOUR 12- 6 15- 6 12- 6 14- 6 25- 6 23- 6 12- 6 23- 3 27- 6 13- 3 27- 6 17- 6 1992 1037.2 1029.8 1035.6 1019.6 1025.7 1013.2 1007.1 1018.6 1020.4 1024.1 1030.2 ****** ****** DAY-HOUR 10- 6 16- 6 12- 6 8- 3 2- 9 7- 6 14- 6 31- 6 2- 6 30- 6 4- 6 **-** 1993 1036.0 ****** 1028.8 1021.8 1023.0 1016.6 1010.2 1012.8 1019.1 1029.0 1032.6 1032.1 ****** DAY-HOUR 6- 6 **-** 23- 6 1- 6 9- 6 23- 6 28- 6 25- 6 23- 6 8- 6 30- 6 6-15 1994 1033.2 1030.4 1024.0 1031.8 1018.2 1009.9 1006.7 1007.4 1025.7 1027.0 1025.7 1036.6 1036.6 DAY-HOUR 10- 6 19- 6 18- 6 5- 6 18- 6 9- 6 2- 6 15- 6 23- 6 10- 6 2- 6 7-15 1995 1033.1 1026.6 1028.9 1021.4 1020.6 1015.3 1003.4 1009.8 1020.3 1029.6 1029.5 1033.0 1033.1 DAY-HOUR 7- 6 25-15 3- 6 7- 6 26-12 1- 6 4- 6 25- 6 22- 6 27- 6 28- 6 11- 3 1996 1035.3 1026.5 1023.7 1027.0 1017.1 1011.9 1011.3 1014.6 1017.3 1026.2 1036.4 1032.4 1036.4 DAY-HOUR 10- 6 13- 6 21- 6 5- 6 7- 6 28- 6 4- 6 30- 6 25- 6 19- 3 18- 6 2- 6 1997 1029.8 1030.0 1031.3 1023.3 1019.7 1009.2 1004.9 1008.3 1017.6 1022.2 1033.2 1032.4 1033.2 DAY-HOUR 19- 6 7-12 11- 6 13- 6 7- 6 1- 6 9- 6 25- 6 16- 3 10- 6 8- 6 29- 6 1998 1029.3 1035.4 1023.9 1024.7 1022.1 1013.8 1010.2 1010.8 1015.2 1027.4 1026.4 1030.0 1035.4 DAY-HOUR 4- 6 23- 6 4- 6 12- 9 3- 6 17- 6 20- 6 9- 9 13- 6 10- 6 21- 6 29- 6 1999 1037.4 1027.6 1026.6 1019.8 1015.2 1009.2 1007.7 1011.3 1017.3 1024.4 1031.7 1034.1 1037.4 DAY-HOUR 2- 6 11-12 19- 9 23- 3 22- 6 9- 6 19- 3 20- 6 29- 6 27- 6 30- 6 1- 6 2000 1029.2 1028.3 1025.6 1018.7 1011.3 1012.2 1011.3 1010.1 1014.6 1026.3 1035.0 1030.1 1035.0 DAY-HOUR 13- 6 11- 6 16- 6 2- 6 5- 6 14- 3 30- 6 1- 3 29-12 16- 6 17- 6 4- 6 2001 1030.5 1030.8 1027.0 1019.4 1012.6 1011.8 1009.5 1013.9 1020.0 1025.7 1030.8 1028.4 1030.8 DAY-HOUR 29- 6 10- 6 11- 9 2- 6 1- 6 2- 6 29- 3 14- 6 22- 6 28- 6 20- 6 22- 6 2002 1031.5 1030.8 1031.7 1022.0 1015.3 1013.5 1010.0 1008.9 1015.4 1018.9 1030.2 1033.0 1033.0 DAY-HOUR 26- 6 19- 6 11- 6 1- 6 9- 9 25- 6 30- 6 31- 6 30- 6 23- 6 18- 6 3- 6 2003 1028.6 1023.1 1030.9 1019.0 1022.7 1010.7 1004.3 1008.6 1018.8 1017.4 1033.5 1038.0 1038.0 DAY-HOUR 23- 6 12-15 2- 6 2- 6 2- 6 7- 6 4- 6 30- 6 27- 6 23- 6 25- 6 12- 6 1991-2003 1037.4 1039.5 1035.6 1031.8 1025.7 1016.6 1011.3 1018.6 1025.7 1029.6 1036.4 1038.0 1039.5 YEAR-DAY 99- 2 91-15 92-12 94- 5 92- 2 93-23 96- 4 92-31 94-23 95-27 96-18 3-12 91-15 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 51 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MIN. OF QFF PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 1010.7 1010.9 1006.6 1003.8 998.4 992.7 993.1 995.4 999.4 1011.5 1010.0 1010.2 992.7 DAY-HOUR 25-12 28-12 7- 3 10-12 22-15 11-15 8-12 12-15 8-12 4-12 5-12 1-12 1992 1012.4 1005.0 1001.8 1003.8 1004.0 994.7 994.4 995.6 1003.5 1009.0 1007.2 ****** ****** DAY-HOUR 2-15 24-15 30-12 18- 3 31-15 26-15 18-12 1-12 17-12 5-12 25-12 **-** 1993 1014.0 ****** 1008.2 1001.1 1003.2 998.0 996.5 996.5 1000.3 1007.8 1006.8 1016.1 ****** DAY-HOUR 8-12 **-** 21-12 20-15 20-12 15-15 3-15 12-15 3-15 1-15 11-12 4-15 1994 1008.9 1005.7 1000.8 1003.6 1003.2 994.6 991.6 991.4 1002.6 1009.4 1008.3 1005.4 991.4 DAY-HOUR 16-12 1- 3 7-12 26-12 13-15 22-12 30-12 2-15 1-12 2-12 26- 3 4- 3 1995 1014.2 1004.3 1002.2 1004.8 1006.2 992.2 988.2 995.1 999.5 1003.9 1006.4 1017.9 988.2 DAY-HOUR 12-12 5-15 26-12 16-15 6-12 22-15 16-15 6-15 19-15 12-15 11-12 25-12 1996 1012.0 1005.4 1008.6 1005.7 1001.4 996.1 995.5 995.3 996.4 1001.9 1013.3 1014.6 995.3 DAY-HOUR 6-12 10-12 13-12 13-15 28-15 5-15 7-15 8-12 8-15 27-15 3-12 23-12 1997 1006.1 1010.5 999.5 1001.8 999.6 994.6 990.5 994.0 997.6 1007.4 1014.5 1008.7 990.5 DAY-HOUR 16-12 23-12 25-12 10-12 18-12 30-15 16-15 6-15 2-15 6-12 19-12 10- 3 1998 1004.8 1004.0 1000.4 1001.3 999.3 996.2 989.7 998.5 997.9 1002.4 1009.7 1012.7 989.7 DAY-HOUR 13- 9 8- 6 18-12 17-15 29-15 29-15 8-15 21-15 2-15 1-12 1-12 21-12 1999 1009.7 1006.3 1005.4 998.5 991.9 989.2 993.5 996.9 998.2 1007.9 1008.2 1014.8 989.2 DAY-HOUR 9-12 4-12 26-15 8-12 20-15 25-15 4-15 13-12 16-12 19-12 26- 9 15-12 2000 1007.0 1005.5 1004.1 1003.7 994.5 989.7 992.1 992.9 994.6 1007.5 1011.8 1012.5 989.7 DAY-HOUR 21-12 7- 3 24-12 10-12 26-15 24-15 11-15 30-15 1-15 1-12 2-12 15- 9 2001 1014.4 998.4 998.4 1000.4 995.8 991.1 990.0 995.1 998.2 1004.9 1006.0 1015.0 990.0 DAY-HOUR 19-12 21-12 25-12 12-15 30- 3 6-15 10-15 27-12 5-12 1-12 18-15 20-15 2002 1010.1 1006.0 1002.4 1002.0 1000.0 992.1 993.2 992.1 1001.7 1006.9 1007.7 1006.1 992.1 DAY-HOUR 8- 3 25-12 28- 9 3-12 20- 9 19-15 24-15 8-15 10-15 21-12 12- 9 21-15 2003 1005.4 1004.7 995.6 1002.0 1001.4 991.6 989.5 995.7 997.2 1004.2 1008.5 1010.7 989.5 DAY-HOUR 28-15 20-12 26-12 27-15 23-12 30-15 18-15 1- 3 7-12 26-12 14-12 6-12 1991-2003 1004.8 998.4 995.6 998.5 991.9 989.2 988.2 991.4 994.6 1001.9 1006.0 1005.4 988.2 YEAR-DAY 98-13 1-21 3-26 99- 8 99-20 99-25 95-16 94- 2 0- 1 96-27 1-18 94- 4 95-16 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 52 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF COMPUTED QFF PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2000 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MEAN ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 53 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MAX. OF COMPUTED QFF PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1993 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2000 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1991-2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 54 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MIN. OF COMPUTED QFF PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1993 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2000 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1991-2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 55 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF QFE PRESSURE IN HPA AT 0000 UTC. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2000 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MEAN ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 56 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MAX. OF QFE PRESSURE IN HPA AT 0000 UTC. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1993 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2000 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1991-2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 57 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MIN. OF QFE PRESSURE IN HPA AT 0000 UTC. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1993 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2000 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1991-2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 58 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF QNH PRESSURE IN HPA AT 0000 UTC. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2000 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MEAN ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 59 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MAX. OF QNH PRESSURE IN HPA AT 0000 UTC. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1993 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2000 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1991-2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 60 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MIN. OF QNH PRESSURE IN HPA AT 0000 UTC. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1993 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2000 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1991-2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 61 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF QFF PRESSURE IN HPA AT 0000 UTC. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2000 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MEAN ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 62 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MAX. OF QFF PRESSURE IN HPA AT 0000 UTC. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1993 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2000 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1991-2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 63 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MIN. OF QFF PRESSURE IN HPA AT 0000 UTC. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1993 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2000 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1991-2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 64 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M AVERAGE OF COMPUTED QFF PRESSURE IN HPA AT 0000 UTC. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2000 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MEAN ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 65 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MAX. OF COMPUTED QFF PRESSURE IN HPA AT 0000 UTC. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1993 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2000 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1991-2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** =============================================================================================== TEHRAN 2002,MAY M.(S & A) STATION JEOPHYSICS TEHRAN (99331) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 66 LATITUDE 35 44 N LONGITUDE 51 23 E DATA PROCESSING CENTER ELEVATION 1418.6 M MIN. OF COMPUTED QFF PRESSURE IN HPA AT 0000 UTC. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1991 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1993 ****** ****** ****** ****** ****** ****** ****** ****** ****** ******