STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1976 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. 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(HPA) ****** ****** ****** ****** 5.12 9.33 9.88 14.29 7.28 5.40 4.09 2.45 ****** RELATIVE HUMIDITY (MEAN %) *** *** *** *** 73 64 65 55 71 70 67 73 *** RELATIVE HUMIDITY (MAX. %) *** *** *** *** 87 84 82 75 90 87 82 85 *** RELATIVE HUMIDITY (MIN. %) *** *** *** *** 60 50 51 41 54 53 54 62 *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** *** *** 84 83 81 74 90 84 80 80 *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** *** *** 63 53 54 45 57 59 59 66 *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** *** *** 79 68 70 53 72 74 69 74 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. ****** ****** ****** ****** 82.6 20.8 1.0 1.0 36.5 33.6 11.3 37.8 ****** DAYS WITH PRECIPITATION >=10 **** **** **** **** 1 0 0 0 1 1 0 1 **** DAYS WITH PRECIPITATION >= 5 **** **** **** **** 5 3 0 0 1 1 0 2 **** DAYS WITH PRECIPITATION >= 1 **** **** **** **** 21 3 0 1 5 9 3 10 **** DAYS WITH PRECIPITATION **** **** **** **** 26 5 3 1 8 14 7 11 **** GREATEST DAILY PRECIPITATION ****** ****** ****** ****** 26.0 9.0 0.4 1.0 27.0 18.2 4.0 12.0 ****** DAY ** ** ** ** 7 1 20 13 14 30 28 10 DAY WITH THUNDER STORM **** **** **** **** 3 1 0 0 0 0 0 0 **** DAYS WITH SNOW OR SLEET **** **** **** **** 0 0 0 0 0 2 2 9 **** DAYS WITH DUST **** **** **** **** 1 0 0 1 0 0 1 0 **** WIND DIRECTION (PREVAILING) *** *** *** *** 45 45 45 45 45 45 45 180 *** PREVAILING WIND SPEED(KNOTS) **** **** **** **** 8.2 12.1 11.9 13.1 11.8 12.0 10.0 12.8 **** PREVAILING WIND PERCENT ***** ***** ***** ***** 25.2 46.0 60.0 49.7 43.3 31.0 16.7 19.4 ***** CALMS PERCENT OF WIND ***** ***** ***** ***** 49.7 42.0 39.4 43.2 44.0 54.8 62.7 65.2 ***** NO. OF WIND OBSERVATION **** **** **** **** 155 150 155 155 150 155 150 155 1225 VECTOR WIND DIRECTION (MEAN) *** *** *** *** 143 50 47 45 56 73 156 185 *** VECTOR WIND MAGNITUDE(KNOTS) **** **** **** **** 0.8 5.3 7.1 6.4 4.2 2.6 2.1 2.5 **** WIND STEADINESES (MEAN %) ***** ***** ***** ***** 16.0 76.8 97.3 90.1 63.6 46.4 44.7 62.5 ***** WIND SPEED (MEAN KNOTS) **** **** **** **** 5.0 6.9 7.3 7.1 6.6 5.6 4.7 4.0 **** FASTEST WIND DIRECTION *** *** *** *** 240 60 30 30 60 60 180 180 *** FASTEST WIND SPEED (KNOTS) *** *** *** *** 35 30 20 25 20 20 27 20 *** DAY ** ** ** ** 27 18 1 16 9 3 25 12 DAYS WITH SKY CLEAR (0-2)/8 **** **** **** **** 0 12 18 18 9 4 14 7 **** DAYS WITH P.CLOUDY (3-6)/8 **** **** **** **** 19 17 8 12 14 21 6 11 **** DAYS WITH CLOUDY (7-8)/8 **** **** **** **** 12 1 5 1 7 6 10 13 **** DAYS WITH VISIBILITY =< 2 KM **** **** **** **** 3 1 0 0 3 9 12 8 **** DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1976 JAN. 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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 ****** ****** ****** ****** 863.3 864.5 861.6 863.7 865.4 865.8 869.6 866.3 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 868.7 870.1 866.5 866.0 871.6 874.9 876.5 876.8 ****** DAY ** ** ** ** 2 26 6 11 11 31 13 18 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 855.6 857.8 855.9 859.9 860.6 857.9 858.0 855.2 ****** DAY ** ** ** ** 21 10 11 22 27 26 25 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1013.1 1014.6 1011.2 1013.6 1015.5 1016.0 1020.3 1016.6 ****** MAX. 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QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 862.9 863.6 860.4 863.1 864.9 866.0 869.4 866.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 868.4 870.1 865.6 866.5 871.1 876.6 876.2 876.8 ****** DAY ** ** ** ** 2 26 6 17 10 31 13 18 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 856.7 855.1 854.1 858.9 860.1 858.6 859.3 853.3 ****** DAY ** ** ** ** 21 10 11 30 20 26 25 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1012.7 1013.5 1009.8 1012.9 1015.0 1016.2 1020.2 1017.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1019.0 1020.9 1015.8 1016.8 1022.0 1028.3 1027.8 1028.5 ****** DAY ** ** ** ** 2 26 6 17 10 31 13 18 MIN. 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QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1976 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 862.7 862.5 859.9 861.7 864.8 865.2 868.7 866.3 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 867.6 867.3 864.4 864.9 886.8 875.2 875.6 875.7 ****** DAY ** ** ** ** 2 27 6 26 9 31 13 18 MIN. 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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 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -6.9 5.2 7.6 12.8 15.3 20.4 20.6 21.4 18.1 9.3 7.2 -0.0 10.9 MINIMUN AIR TEMPERATURE (C) -13.1 -2.0 1.5 4.4 6.7 10.8 11.9 12.5 9.9 2.2 0.0 -4.4 3.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 29 10 4 0 0 0 0 0 0 4 2 18 67 DAYS WITH FREEZING MIN.<= 0 31 22 15 1 0 0 0 0 0 12 15 26 122 TEMPERATURE RECORDS LOWEST(C) -26.0 -8.0 -6.0 0.0 3.0 7.0 9.0 8.0 5.0 -10.0 -5.0 -15.0 -26.0 DAY 14 1 6 17 1 3 16 30 30 24 14 25 MAXIMUM AIR TEMPERATURE (C) -1.8 11.0 13.0 18.7 20.6 25.6 24.4 26.4 24.0 15.1 13.4 4.2 16.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 7 1 10 5 3 0 0 26 DAYS WITH MAXIMUM TEMP. <= 0 24 1 0 0 0 0 0 0 0 1 0 9 35 TEMPERATURE RECORDS HIGHEST(C) 7.0 18.0 20.0 25.0 29.0 34.0 30.0 37.0 31.0 30.0 21.0 15.0 37.0 DAY 20 17 2 11 13 11 13 24 23 2 28 4 DIF. BETWEEN (MAX.-MIN.) (C) 11.3 13.0 11.5 14.3 13.9 14.8 12.5 13.9 14.1 12.9 13.4 8.6 12.8 MEAN DAILY TEMP. (MDT) (C) -7.4 4.5 7.2 11.6 13.7 18.2 18.2 19.5 16.9 8.6 6.7 -0.1 9.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.5 7.5 1.0 22.5 2.5 0.5 0.0 0.0 34.5 HEATING DEG. DAYS(BASE 18 0C) 788.5 378.0 334.0 192.5 140.5 30.5 16.5 28.0 49.0 294.5 338.5 561.5 3152.0 DEWPOINT (MEAN C) -11.6 -3.2 0.7 4.9 9.2 14.8 14.1 12.3 10.0 1.9 0.5 -5.6 4.0 MIXING RATIO (G/KG) 2.02 3.63 4.97 6.52 8.68 12.60 12.14 10.64 9.14 5.32 4.70 3.07 6.95 VAPOUR PRESSURE (HPA) 2.80 5.02 6.85 8.93 11.89 17.09 16.46 14.50 12.53 7.34 6.50 4.25 9.51 SATURATION DEF. (HPA) 1.17 4.60 4.26 6.70 6.45 8.22 8.60 12.75 9.41 6.28 4.28 2.30 6.25 RELATIVE HUMIDITY (MEAN %) 71 58 66 62 69 72 68 61 63 66 66 68 66 RELATIVE HUMIDITY (MAX. %) 81 76 82 80 85 88 85 81 84 85 83 80 83 RELATIVE HUMIDITY (MIN. %) 60 47 49 47 57 60 57 46 47 50 49 57 52 RELATIVE HUMIDITY (MEAN% 03UTC) 77 74 75 78 83 87 84 81 82 80 82 77 80 RELATIVE HUMIDITY (MEAN% 09UTC) 64 51 60 54 60 63 61 50 49 56 54 62 57 RELATIVE HUMIDITY (MEAN% 15UTC) 73 56 66 60 71 72 67 57 64 69 67 68 66 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 23.7 5.6 41.5 41.9 62.2 16.8 10.0 3.6 5.6 57.8 32.4 45.8 346.9 DAYS WITH PRECIPITATION >=10 0 0 0 2 3 0 0 0 0 3 1 1 10 DAYS WITH PRECIPITATION >= 5 0 1 2 3 5 2 1 0 0 4 2 5 25 DAYS WITH PRECIPITATION >= 1 9 1 13 6 12 6 3 2 2 9 4 10 77 DAYS WITH PRECIPITATION 13 3 16 9 16 9 3 5 3 9 4 11 101 GREATEST DAILY PRECIPITATION 4.0 5.0 9.0 18.0 14.0 5.0 8.0 2.0 3.0 18.0 23.0 12.0 23.0 DAY 7 7 30 20 6 1 31 5 3 22 12 23 DAY WITH THUNDER STORM 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 10 2 3 1 0 0 0 0 0 5 2 9 32 DAYS WITH DUST 0 0 0 2 1 0 1 0 0 1 0 0 5 WIND DIRECTION (PREVAILING) 45 180 45 45 45 45 45 45 45 45 225 225 45 PREVAILING WIND SPEED(KNOTS) 16.1 13.4 8.6 10.1 12.0 12.2 13.5 12.9 13.5 11.6 12.2 13.0 12.3 PREVAILING WIND PERCENT 14.8 26.4 20.6 24.7 36.8 51.3 65.8 60.0 52.0 27.1 13.3 18.1 32.2 CALMS PERCENT OF WIND 70.3 50.0 40.6 45.3 49.7 35.3 29.0 39.4 39.3 54.2 58.7 52.9 47.1 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 86 190 181 167 54 50 45 47 50 52 185 189 73 VECTOR WIND MAGNITUDE(KNOTS) 2.0 4.7 3.4 2.2 3.5 5.9 8.9 7.7 6.3 2.2 1.6 3.1 2.3 WIND STEADINESES (MEAN %) 45.5 73.4 47.2 31.9 59.3 78.7 95.7 98.7 79.7 44.0 35.6 52.5 34.8 WIND SPEED (MEAN KNOTS) 4.4 6.4 7.2 6.9 5.9 7.5 9.3 7.8 7.9 5.0 4.5 5.9 6.6 FASTEST WIND DIRECTION 60 240 240 240 40 60 60 60 60 60 210 180 240 FASTEST WIND SPEED (KNOTS) 27 30 25 28 20 18 20 20 22 25 20 25 30 DAY 4 24 7 13 5 8 6 7 30 5 11 4 DAYS WITH SKY CLEAR (0-2)/8 9 10 5 7 5 13 11 16 15 10 17 6 124 DAYS WITH P.CLOUDY (3-6)/8 8 16 13 16 14 13 18 9 10 12 9 17 155 DAYS WITH CLOUDY (7-8)/8 14 2 13 7 12 4 2 6 5 9 4 8 86 DAYS WITH VISIBILITY =< 2 KM 6 9 5 1 1 2 1 0 2 6 9 8 50 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 865.0 865.8 865.4 861.4 864.0 861.2 860.9 862.8 866.1 866.9 866.2 864.9 864.2 MAX. QFE PRESSURE IN HPA 872.7 874.0 877.5 872.9 868.8 866.6 888.1 868.7 874.3 877.2 872.6 876.3 888.1 DAY-HOUR 5- 6 16- 3 9- 6 1- 3 28- 6 9- 6 8-12 23- 6 30- 9 23- 6 26- 6 19- 6 MIN. QFE PRESSURE IN HPA 855.1 854.8 855.9 847.7 858.8 856.0 850.0 855.0 860.3 856.6 856.6 855.8 847.7 DAY-HOUR 20- 3 6-12 4-12 24- 9 4-12 28-15 2-15 16-12 11-12 17-15 18- 3 5-12 MEAN QNH PRESSURE IN HPA 1015.1 1016.0 1015.6 1011.0 1014.0 1010.8 1010.4 1012.6 1016.3 1017.2 1016.4 1015.0 1014.2 MAX. QNH PRESSURE IN HPA 1023.9 1025.3 1029.3 1024.1 1019.4 1016.9 1041.4 1019.3 1025.7 1029.0 1023.7 1028.0 1041.4 DAY-HOUR 5- 6 16- 3 9- 6 1- 3 28- 6 9- 6 8-12 23- 6 30- 9 23- 6 26- 6 19- 6 MIN. QNH PRESSURE IN HPA 1003.8 1003.5 1004.7 995.4 1008.0 1004.8 998.0 1003.7 1009.7 1005.5 1005.5 1004.6 995.4 DAY-HOUR 20- 3 6-12 4-12 24- 9 4-12 28-15 2-15 16-12 11-12 17-15 18- 3 5-12 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 864.8 866.1 865.6 861.8 864.4 862.0 861.4 863.6 866.8 867.1 866.4 864.9 864.6 MAX. QFE PRESSURE IN HPA 871.6 874.0 876.1 872.9 868.6 866.0 864.8 868.4 874.2 876.3 871.8 874.1 876.3 DAY 5 16 9 1 29 9 21 23 30 23 27 13 MIN. QFE PRESSURE IN HPA 855.1 855.2 858.0 850.7 860.2 859.1 857.3 857.1 862.5 858.4 856.6 857.0 850.7 DAY 20 7 4 24 26 19 3 17 16 17 18 5 MEAN QNH PRESSURE IN HPA 1014.9 1016.4 1015.8 1011.5 1014.4 1011.6 1010.9 1013.5 1017.2 1017.5 1016.7 1015.0 1014.6 MAX. QNH PRESSURE IN HPA 1022.6 1025.3 1027.7 1024.1 1019.2 1016.2 1014.9 1019.0 1025.6 1028.0 1022.8 1025.5 1028.0 DAY 5 16 9 1 29 9 21 23 30 23 27 13 MIN. QNH PRESSURE IN HPA 1003.8 1003.9 1007.1 998.8 1009.6 1008.4 1006.3 1006.1 1012.2 1007.6 1005.5 1006.0 998.8 DAY 20 7 4 24 26 19 3 17 16 17 18 5 MEAN QFF PRESSURE IN HPA 1024.2 1018.6 1016.1 1009.3 1010.8 1004.9 1003.9 1006.2 1011.9 1017.3 1017.7 1019.5 1013.4 MAX. QFF PRESSURE IN HPA 1034.6 1026.9 1032.3 1025.4 1016.4 1011.6 1008.2 1013.7 1023.7 1034.4 1025.4 1034.0 1034.6 DAY 14 22 9 1 2 9 22 29 30 23 27 13 MIN. QFF PRESSURE IN HPA 1006.2 1005.5 1006.1 993.5 1003.7 999.6 998.2 996.9 1005.9 1001.8 1008.1 1003.8 993.5 DAY 20 6 4 24 26 19 27 26 26 5 18 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 865.8 866.7 866.4 862.2 864.7 862.0 861.5 863.8 867.0 867.9 867.2 865.8 865.1 MAX. QFE PRESSURE IN HPA 872.7 873.4 877.5 872.8 868.8 866.6 865.0 868.7 871.7 877.2 872.6 876.3 877.5 DAY 5 17 9 1 28 9 21 23 13 23 26 19 MIN. QFE PRESSURE IN HPA 856.5 855.5 858.3 850.2 860.8 858.9 857.8 857.5 863.0 858.0 858.2 857.6 850.2 DAY 20 7 4 24 26 28 3 17 11 17 18 5 MEAN QNH PRESSURE IN HPA 1015.9 1017.1 1016.6 1011.9 1014.7 1011.7 1011.1 1013.7 1017.3 1018.4 1017.6 1016.0 1015.2 MAX. QNH PRESSURE IN HPA 1023.9 1024.7 1029.3 1024.0 1019.4 1016.9 1015.1 1019.3 1022.7 1029.0 1023.7 1028.0 1029.3 DAY 5 17 9 1 28 9 21 23 13 23 26 19 MIN. QNH PRESSURE IN HPA 1005.4 1004.3 1007.5 998.2 1010.3 1008.1 1006.9 1006.6 1012.8 1007.1 1007.4 1006.7 998.2 DAY 20 7 4 24 26 28 3 17 11 17 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 865.6 866.2 865.9 861.5 864.3 861.3 860.9 863.0 866.3 867.1 866.4 865.1 864.5 MAX. QFE PRESSURE IN HPA 872.5 872.8 877.1 872.7 868.7 865.7 864.5 867.8 874.3 876.8 872.3 874.7 877.1 DAY 5 17 9 1 28 9 21 29 30 23 26 12 MIN. QFE PRESSURE IN HPA 857.1 855.8 858.4 847.7 860.3 857.3 857.0 856.0 861.5 858.0 858.5 856.6 847.7 DAY 20 6 4 24 4 28 2 16 11 17 11 5 MEAN QNH PRESSURE IN HPA 1015.7 1016.5 1016.1 1011.1 1014.2 1010.9 1010.5 1012.8 1016.5 1017.5 1016.7 1015.2 1014.5 MAX. QNH PRESSURE IN HPA 1023.6 1024.0 1028.9 1023.9 1019.3 1015.9 1014.5 1018.3 1025.7 1028.5 1023.4 1026.1 1028.9 DAY 5 17 9 1 28 9 21 29 30 23 26 12 MIN. QNH PRESSURE IN HPA 1006.1 1004.6 1007.6 995.4 1009.7 1006.3 1006.0 1004.8 1011.1 1007.1 1007.7 1005.5 995.4 DAY 20 6 4 24 4 28 2 16 11 17 11 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 864.5 864.8 864.6 860.8 863.5 860.5 861.2 862.0 865.2 866.0 865.3 864.4 863.6 MAX. QFE PRESSURE IN HPA 871.3 871.2 876.1 871.7 868.3 865.5 888.1 867.6 873.4 875.9 871.6 874.0 888.1 DAY 5 17 9 1 28 9 8 29 30 23 26 12 MIN. QFE PRESSURE IN HPA 856.9 854.8 855.9 851.1 858.8 856.6 856.4 855.0 860.3 857.3 857.8 855.8 851.1 DAY 20 6 4 24 4 28 2 16 11 17 17 5 MEAN QNH PRESSURE IN HPA 1014.5 1014.9 1014.6 1010.3 1013.3 1009.9 1010.8 1011.7 1015.3 1016.3 1015.4 1014.4 1013.5 MAX. QNH PRESSURE IN HPA 1022.3 1022.2 1027.7 1022.7 1018.8 1015.7 1041.4 1018.1 1024.7 1027.5 1022.6 1025.3 1041.4 DAY 5 17 9 1 28 9 8 29 30 23 26 12 MIN. QNH PRESSURE IN HPA 1005.9 1003.5 1004.7 999.3 1008.0 1005.5 1005.3 1003.7 1009.7 1006.3 1006.9 1004.6 999.3 DAY 20 6 4 24 4 28 2 16 11 17 17 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 864.7 865.0 864.8 860.8 863.5 860.3 859.6 861.9 865.3 866.2 865.5 864.3 863.5 MAX. QFE PRESSURE IN HPA 871.7 871.2 875.9 871.5 868.6 864.9 863.2 867.6 873.4 875.5 872.4 876.0 876.0 DAY 5 17 9 1 28 9 21 29 30 23 26 12 MIN. QFE PRESSURE IN HPA 856.8 855.2 856.3 850.5 859.1 856.0 850.0 855.0 860.8 856.6 857.5 855.8 850.0 DAY 19 6 3 24 6 28 2 16 11 17 17 5 MEAN QNH PRESSURE IN HPA 1014.8 1015.1 1014.8 1010.3 1013.4 1009.7 1009.0 1011.5 1015.4 1016.5 1015.7 1014.3 1013.4 MAX. QNH PRESSURE IN HPA 1022.7 1022.2 1027.5 1022.5 1019.2 1015.0 1013.0 1018.1 1024.7 1027.0 1023.5 1027.6 1027.6 DAY 5 17 9 1 28 9 21 29 30 23 26 12 MIN. QNH PRESSURE IN HPA 1005.8 1003.9 1005.2 998.6 1008.4 1004.8 998.0 1003.7 1010.3 1005.5 1006.6 1004.6 998.0 DAY 19 6 3 24 6 28 2 16 11 17 17 5 MEAN QFF PRESSURE IN HPA 1024.0 1017.0 1015.0 1007.9 1009.5 1002.5 1001.6 1004.0 1009.9 1016.1 1016.5 1018.9 1011.9 MAX. QFF PRESSURE IN HPA 1034.4 1024.3 1032.0 1021.6 1016.2 1010.5 1007.7 1015.0 1024.3 1033.4 1026.4 1036.0 1036.0 DAY 14 21 9 1 21 9 17 29 30 23 26 12 MIN. QFF PRESSURE IN HPA 1009.8 1004.1 1001.4 995.7 1003.1 997.2 991.0 994.0 1003.1 1000.9 1007.3 1002.7 991.0 DAY 19 6 3 24 6 28 2 26 11 17 11 5 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 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.0 3.7 8.9 11.8 14.0 16.9 21.7 19.3 20.6 14.0 -0.3 4.2 11.3 MINIMUN AIR TEMPERATURE (C) -3.9 -2.3 0.9 3.5 6.0 8.6 11.2 11.3 10.6 7.7 -5.0 -1.0 4.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 15 11 4 0 0 0 0 0 0 0 16 4 50 DAYS WITH FREEZING MIN.<= 0 25 21 16 8 2 1 0 0 0 0 28 24 125 TEMPERATURE RECORDS LOWEST(C) -14.0 -8.0 -6.0 -2.0 0.0 0.0 6.0 7.0 6.0 2.0 -14.0 -10.0 -14.0 DAY 13 24 8 11 3 2 4 21 29 30 24 14 MAXIMUM AIR TEMPERATURE (C) 6.1 9.1 14.8 17.4 19.6 21.9 27.1 24.5 27.8 19.3 4.3 8.5 16.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 3 10 1 12 0 0 0 26 DAYS WITH MAXIMUM TEMP. <= 0 1 2 0 0 0 0 0 0 0 0 3 1 7 TEMPERATURE RECORDS HIGHEST(C) 12.0 16.0 22.0 25.0 29.0 33.0 38.0 32.0 37.0 29.0 12.0 13.0 38.0 DAY 3 15 27 24 17 30 17 13 11 7 1 7 DIF. BETWEEN (MAX.-MIN.) (C) 10.0 11.4 13.9 13.9 13.6 13.3 15.9 13.2 17.2 11.6 9.3 9.5 12.7 MEAN DAILY TEMP. (MDT) (C) 1.1 3.4 7.9 10.4 12.8 15.2 19.2 17.9 19.2 13.5 -0.3 3.8 10.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 2.0 17.0 2.0 18.0 0.0 0.0 0.0 39.0 HEATING DEG. DAYS(BASE 18 0C) 524.0 407.5 314.0 227.0 161.5 98.5 23.0 28.5 23.0 140.5 550.5 440.5 2938.5 DEWPOINT (MEAN C) -5.1 -3.4 -1.3 1.0 8.0 10.2 11.5 11.8 9.3 7.5 -4.3 -2.1 3.6 MIXING RATIO (G/KG) 3.19 3.53 4.15 4.92 7.99 9.30 10.16 10.38 8.79 7.62 3.34 3.89 6.44 VAPOUR PRESSURE (HPA) 4.41 4.87 5.70 6.75 10.93 12.68 13.86 14.15 12.04 10.50 4.64 5.36 8.82 SATURATION DEF. (HPA) 2.55 3.70 6.55 8.28 6.26 7.92 13.72 9.21 14.43 6.31 1.58 3.23 6.98 RELATIVE HUMIDITY (MEAN %) 66 64 54 53 71 68 55 64 55 69 76 66 63 RELATIVE HUMIDITY (MAX. %) 78 80 75 74 90 87 78 83 77 87 86 80 81 RELATIVE HUMIDITY (MIN. %) 52 48 38 37 56 54 41 50 38 53 64 54 49 RELATIVE HUMIDITY (MEAN% 03UTC) 74 77 72 73 88 87 78 83 76 85 80 76 79 RELATIVE HUMIDITY (MEAN% 09UTC) 57 54 44 43 60 57 45 53 42 57 69 59 53 RELATIVE HUMIDITY (MEAN% 15UTC) 67 66 49 51 72 66 52 64 52 69 79 66 63 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 19.7 21.4 21.8 17.3 97.5 101.9 0.0 0.0 3.0 7.0 84.1 71.5 445.2 DAYS WITH PRECIPITATION >=10 1 1 0 0 2 4 0 0 0 0 4 2 14 DAYS WITH PRECIPITATION >= 5 1 1 1 1 7 5 0 0 0 0 6 4 26 DAYS WITH PRECIPITATION >= 1 4 5 6 7 15 11 0 0 1 3 10 6 68 DAYS WITH PRECIPITATION 6 6 9 11 21 11 0 0 1 7 12 8 92 GREATEST DAILY PRECIPITATION 10.0 12.0 8.0 5.0 34.0 24.0 0.0 0.0 3.0 4.0 17.0 28.0 34.0 DAY 9 3 31 25 7 1 ** ** 8 20 18 12 DAY WITH THUNDER STORM 0 0 0 1 2 4 0 0 0 0 0 0 7 DAYS WITH SNOW OR SLEET 2 5 3 2 1 1 0 0 0 0 12 3 29 DAYS WITH DUST 1 1 0 0 0 0 1 0 0 0 0 0 3 WIND DIRECTION (PREVAILING) 180 180 45 225 45 45 45 45 45 *** *** *** *** PREVAILING WIND SPEED(KNOTS) 15.7 14.0 10.6 18.1 11.5 11.9 14.3 12.8 12.1 **** **** **** **** PREVAILING WIND PERCENT 22.6 20.7 21.9 26.0 37.4 48.7 50.3 54.8 33.6 ***** ***** ***** ***** CALMS PERCENT OF WIND 54.8 46.4 34.8 36.3 46.5 41.3 43.2 38.7 50.0 ***** ***** ***** ***** NO. OF WIND OBSERVATION 155 140 155 146 155 150 155 155 146 2 0 0 1359 VECTOR WIND DIRECTION (MEAN) 191 190 187 211 49 54 42 43 68 *** *** *** *** VECTOR WIND MAGNITUDE(KNOTS) 5.2 3.8 2.7 3.4 3.6 5.1 7.5 7.5 3.7 **** **** **** **** WIND STEADINESES (MEAN %) 80.0 52.8 32.5 36.6 60.0 73.9 93.8 96.2 63.8 ***** ***** ***** ***** WIND SPEED (MEAN KNOTS) 6.5 7.2 8.3 9.3 6.0 6.9 8.0 7.8 5.8 **** **** **** **** FASTEST WIND DIRECTION 210 180 230 220 60 30 60 60 60 *** *** *** *** FASTEST WIND SPEED (KNOTS) 30 27 27 38 20 28 30 20 20 *** *** *** *** DAY 1 16 12 10 5 10 18 5 25 ** ** ** DAYS WITH SKY CLEAR (0-2)/8 11 9 7 5 5 12 24 15 24 6 11 11 140 DAYS WITH P.CLOUDY (3-6)/8 15 10 18 13 17 8 7 12 5 12 7 13 137 DAYS WITH CLOUDY (7-8)/8 5 9 6 12 9 10 0 4 1 13 12 7 88 DAYS WITH VISIBILITY =< 2 KM 5 10 6 4 10 4 1 0 3 10 9 5 67 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 864.0 864.0 861.9 859.5 862.7 861.5 863.4 863.0 864.0 867.7 868.9 862.9 863.6 MAX. QFE PRESSURE IN HPA 876.0 876.5 871.8 868.8 870.7 871.7 869.9 868.0 873.3 876.4 876.0 875.1 876.5 DAY-HOUR 13- 6 5- 9 19- 6 13- 6 3- 6 8- 6 13- 6 21- 3 26- 9 10- 6 5- 6 23- 9 MIN. QFE PRESSURE IN HPA 849.3 853.0 844.4 849.0 853.7 849.8 852.9 856.5 857.4 858.4 858.7 848.8 844.4 DAY-HOUR 21- 3 17-12 12- 3 25-12 31-15 21- 9 1-12 13-15 30-15 31-15 8- 3 16- 3 MEAN QNH PRESSURE IN HPA 1014.0 1014.0 1011.5 1008.9 1012.4 1011.1 1013.3 1012.8 1013.9 1018.2 1019.5 1012.6 1013.5 MAX. QNH PRESSURE IN HPA 1027.6 1028.2 1022.8 1019.4 1021.6 1022.7 1020.7 1018.5 1024.5 1028.1 1027.6 1026.6 1028.2 DAY-HOUR 13- 6 5- 9 19- 6 13- 6 3- 6 8- 6 13- 6 21- 3 26- 9 10- 6 5- 6 23- 9 MIN. QNH PRESSURE IN HPA 997.2 1001.4 991.6 996.9 1002.2 997.8 1001.3 1005.4 1006.4 1007.6 1007.9 996.6 991.6 DAY-HOUR 21- 3 17-12 12- 3 25-12 31-15 21- 9 1-12 13-15 30-15 31-15 8- 3 16- 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 863.7 864.0 862.2 859.8 863.0 862.1 863.8 863.7 864.6 867.9 868.6 862.6 863.8 MAX. QFE PRESSURE IN HPA 875.3 875.2 870.8 868.2 870.4 871.5 869.4 868.0 871.6 875.2 875.2 873.8 875.3 DAY 13 5 19 13 3 8 8 21 26 10 5 24 MIN. QFE PRESSURE IN HPA 849.3 856.7 844.4 850.7 853.9 853.4 854.7 858.1 860.3 860.3 858.7 848.8 844.4 DAY 21 22 12 25 30 21 1 14 24 31 8 16 MEAN QNH PRESSURE IN HPA 1013.6 1014.0 1011.9 1009.2 1012.8 1011.8 1013.7 1013.6 1014.6 1018.4 1019.2 1012.4 1013.8 MAX. QNH PRESSURE IN HPA 1026.8 1026.7 1021.7 1018.7 1021.2 1022.5 1020.1 1018.5 1022.6 1026.7 1026.7 1025.1 1026.8 DAY 13 5 19 13 3 8 8 21 26 10 5 24 MIN. QNH PRESSURE IN HPA 997.2 1005.6 991.6 998.8 1002.5 1001.9 1003.4 1007.2 1009.7 1009.7 1007.9 996.6 991.6 DAY 21 22 12 25 30 21 1 14 24 31 8 16 MEAN QFF PRESSURE IN HPA 1017.7 1016.8 1011.9 1007.4 1009.7 1007.1 1006.6 1007.5 1008.4 1015.1 1024.2 1014.5 1012.2 MAX. QFF PRESSURE IN HPA 1036.7 1033.3 1024.6 1021.8 1021.8 1019.2 1014.8 1014.7 1018.4 1024.1 1034.9 1033.1 1036.7 DAY 13 5 19 13 3 8 8 21 26 10 5 24 MIN. QFF PRESSURE IN HPA 997.1 1003.3 989.4 992.9 999.8 995.9 994.3 998.3 1002.1 1005.0 1007.5 996.1 989.4 DAY 21 17 12 10 30 21 1 14 19 31 1 16 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 864.8 864.9 862.8 860.4 863.3 862.3 864.3 864.0 865.1 868.7 869.6 863.8 864.5 MAX. QFE PRESSURE IN HPA 876.0 876.1 871.8 868.8 870.7 871.7 869.9 868.0 873.1 876.4 876.0 873.7 876.4 DAY 13 5 19 13 3 8 13 21 26 10 5 23 MIN. QFE PRESSURE IN HPA 853.7 857.8 851.3 851.0 854.4 852.0 854.6 859.7 860.6 861.2 860.8 852.0 851.0 DAY 21 17 12 25 30 21 1 14 4 31 8 16 MEAN QNH PRESSURE IN HPA 1014.9 1014.9 1012.6 1009.9 1013.2 1012.0 1014.3 1013.9 1015.2 1019.3 1020.3 1013.8 1014.5 MAX. QNH PRESSURE IN HPA 1027.6 1027.7 1022.8 1019.4 1021.6 1022.7 1020.7 1018.5 1024.3 1028.1 1027.6 1025.0 1028.1 DAY 13 5 19 13 3 8 13 21 26 10 5 23 MIN. QNH PRESSURE IN HPA 1002.2 1006.9 999.5 999.1 1003.0 1000.3 1003.2 1009.1 1010.1 1010.8 1010.3 1000.3 999.1 DAY 21 17 12 25 30 21 1 14 4 31 8 16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 864.4 864.2 862.1 859.6 862.8 861.6 863.8 863.3 864.4 868.0 869.2 863.2 863.9 MAX. QFE PRESSURE IN HPA 875.4 876.5 870.7 868.2 870.0 870.9 869.1 867.6 873.3 875.7 875.1 875.1 876.5 DAY 13 5 19 13 2 8 7 21 26 10 5 23 MIN. QFE PRESSURE IN HPA 856.2 856.2 849.2 849.6 854.4 849.8 854.1 858.2 859.5 859.2 861.8 850.0 849.2 DAY 20 17 12 25 30 21 1 4 4 31 8 16 MEAN QNH PRESSURE IN HPA 1014.4 1014.2 1011.8 1009.0 1012.6 1011.2 1013.7 1013.1 1014.5 1018.5 1019.9 1013.1 1013.8 MAX. QNH PRESSURE IN HPA 1026.9 1028.2 1021.6 1018.7 1020.8 1021.8 1019.8 1018.1 1024.5 1027.3 1026.6 1026.6 1028.2 DAY 13 5 19 13 2 8 7 21 26 10 5 23 MIN. QNH PRESSURE IN HPA 1005.1 1005.1 997.1 997.6 1003.0 997.8 1002.7 1007.4 1008.8 1008.5 1011.4 998.0 997.1 DAY 20 17 12 25 30 21 1 4 4 31 8 16 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 863.4 863.1 861.0 858.8 862.1 860.9 862.9 862.1 863.0 867.0 868.5 862.2 862.9 MAX. QFE PRESSURE IN HPA 874.1 875.7 870.0 867.5 869.5 869.1 869.5 866.3 871.3 874.4 874.4 874.7 875.7 DAY 13 5 19 13 2 8 2 15 26 10 5 23 MIN. QFE PRESSURE IN HPA 853.3 853.0 849.4 849.0 854.4 851.3 852.9 857.5 857.7 858.7 861.2 853.7 849.0 DAY 20 17 12 25 30 21 1 4 30 31 7 16 MEAN QNH PRESSURE IN HPA 1013.3 1012.9 1010.5 1008.0 1011.8 1010.4 1012.7 1011.8 1012.8 1017.4 1019.1 1011.9 1012.7 MAX. QNH PRESSURE IN HPA 1025.5 1027.3 1020.8 1017.9 1020.2 1019.8 1020.2 1016.6 1022.3 1025.8 1025.8 1026.1 1027.3 DAY 13 5 19 13 2 8 2 15 26 10 5 23 MIN. QNH PRESSURE IN HPA 1001.8 1001.4 997.3 996.9 1003.0 999.5 1001.3 1006.6 1006.8 1007.9 1010.8 1002.2 996.9 DAY 20 17 12 25 30 21 1 4 30 31 7 16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 863.8 863.8 861.2 859.0 862.1 860.8 862.4 861.9 862.9 867.0 868.6 862.4 863.0 MAX. QFE PRESSURE IN HPA 874.5 875.9 870.2 867.3 869.8 869.2 868.5 866.5 871.0 874.0 874.0 875.1 875.9 DAY 13 5 19 12 2 8 7 28 26 10 5 23 MIN. QFE PRESSURE IN HPA 852.8 854.0 850.6 850.0 853.7 850.8 853.1 856.5 857.4 858.4 860.4 855.0 850.0 DAY 20 17 12 25 31 21 1 13 30 31 7 15 MEAN QNH PRESSURE IN HPA 1013.7 1013.8 1010.8 1008.3 1011.8 1010.3 1012.2 1011.6 1012.7 1017.4 1019.2 1012.1 1012.8 MAX. QNH PRESSURE IN HPA 1025.9 1027.5 1021.0 1017.7 1020.6 1019.9 1019.1 1016.8 1021.9 1025.3 1025.3 1026.6 1027.5 DAY 13 5 19 12 2 8 7 28 26 10 5 23 MIN. QNH PRESSURE IN HPA 1001.2 1002.6 998.7 998.0 1002.2 998.9 1001.5 1005.4 1006.4 1007.6 1009.9 1003.7 998.0 DAY 20 17 12 25 31 21 1 13 30 31 7 15 MEAN QFF PRESSURE IN HPA 1017.8 1016.5 1010.7 1006.3 1008.6 1005.2 1004.9 1005.3 1006.3 1014.0 1024.3 1014.1 1011.1 MAX. QFF PRESSURE IN HPA 1035.7 1034.1 1022.6 1021.1 1019.9 1015.9 1013.4 1012.3 1018.4 1023.7 1034.0 1033.4 1035.7 DAY 13 5 19 11 2 7 7 21 26 14 25 23 MIN. QFF PRESSURE IN HPA 1000.7 1001.4 996.8 994.6 999.8 991.6 993.7 996.0 999.3 1003.2 1012.1 1003.9 991.6 DAY 20 17 12 24 31 30 1 13 30 31 7 16 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 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.4 3.0 6.0 13.0 ***** ***** 21.3 22.1 19.8 13.6 8.6 2.8 ***** MINIMUN AIR TEMPERATURE (C) -5.3 -2.3 -0.2 5.1 ***** ***** 13.3 11.7 10.4 6.9 2.0 -2.8 ***** DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 **** **** 0 0 0 0 0 0 **** DAYS WITH MINIMUM TEMP. <=-4 19 14 6 0 **** **** 0 0 0 0 0 11 **** DAYS WITH FREEZING MIN.<= 0 28 21 15 6 **** **** 0 0 0 1 14 28 **** TEMPERATURE RECORDS LOWEST(C) -15.0 -8.0 -13.0 0.0 ***** ***** 10.0 8.0 2.0 0.0 -3.0 -12.0 ***** DAY 27 18 5 17 ** ** 8 30 21 28 20 22 MAXIMUM AIR TEMPERATURE (C) 4.2 7.3 11.2 18.7 ***** ***** 26.5 28.3 27.1 19.6 14.0 7.3 ***** DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 **** **** 8 14 12 0 0 0 **** DAYS WITH MAXIMUM TEMP. <= 0 8 6 1 0 **** **** 0 0 0 0 0 2 **** TEMPERATURE RECORDS HIGHEST(C) 14.0 20.0 20.0 28.0 ***** ***** 34.0 35.0 35.0 26.0 22.0 13.0 ***** DAY 4 14 17 4 ** ** 11 31 1 1 2 2 DIF. BETWEEN (MAX.-MIN.) (C) 9.5 9.6 11.4 13.6 ***** ***** 13.2 16.6 16.7 12.7 12.0 10.1 ***** MEAN DAILY TEMP. (MDT) (C) -0.5 2.5 5.5 11.9 ***** ***** 19.9 20.0 18.8 13.3 8.0 2.2 ***** COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 ****** ****** 11.0 12.0 25.0 0.0 0.0 0.0 ****** HEATING DEG. DAYS(BASE 18 0C) 574.0 434.0 372.5 185.0 ****** ****** 5.0 5.5 44.5 147.0 300.5 489.5 ****** DEWPOINT (MEAN C) -5.7 -2.2 -0.3 3.5 ***** ***** 14.4 11.0 9.6 7.8 2.5 -3.2 ***** MIXING RATIO (G/KG) 3.03 3.95 4.57 5.88 ****** ****** 12.15 9.89 9.26 7.85 5.46 3.60 ****** VAPOUR PRESSURE (HPA) 4.19 5.44 6.28 8.08 ****** ****** 16.52 13.51 12.70 10.80 7.55 4.96 ****** SATURATION DEF. (HPA) 2.19 2.79 4.05 8.01 ****** ****** 9.75 14.55 12.43 5.90 4.39 2.87 ****** RELATIVE HUMIDITY (MEAN %) 70 71 66 57 *** *** 66 53 58 71 69 67 *** RELATIVE HUMIDITY (MAX. %) 81 83 80 76 *** *** 83 73 78 88 86 81 *** RELATIVE HUMIDITY (MIN. %) 59 62 55 44 *** *** 53 38 40 54 55 54 *** RELATIVE HUMIDITY (MEAN% 03UTC) 79 82 80 74 *** *** 82 73 76 87 82 78 *** RELATIVE HUMIDITY (MEAN% 09UTC) 66 66 58 49 *** *** 54 40 44 58 60 61 *** RELATIVE HUMIDITY (MEAN% 15UTC) 69 70 65 55 *** *** 68 53 59 71 69 65 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 23.6 39.1 24.5 49.8 ****** ****** 4.0 3.0 3.6 38.0 9.0 31.2 ****** DAYS WITH PRECIPITATION >=10 0 1 1 1 **** **** 0 0 0 1 0 1 **** DAYS WITH PRECIPITATION >= 5 3 2 1 5 **** **** 0 0 0 1 0 3 **** DAYS WITH PRECIPITATION >= 1 3 9 7 8 **** **** 1 1 1 12 4 4 **** DAYS WITH PRECIPITATION 4 10 7 10 **** **** 1 1 3 13 4 5 **** GREATEST DAILY PRECIPITATION 9.0 14.0 11.5 17.0 ****** ****** 4.0 3.0 3.0 11.0 4.0 18.0 ****** DAY 9 28 27 22 ** ** 5 25 20 5 30 20 DAY WITH THUNDER STORM 0 0 0 0 **** **** 0 1 0 2 0 0 **** DAYS WITH SNOW OR SLEET 4 4 3 2 **** **** 0 0 0 2 0 4 **** DAYS WITH DUST 1 0 0 0 **** **** 1 0 0 1 2 1 **** WIND DIRECTION (PREVAILING) *** *** *** *** *** *** *** *** *** *** 225 225 *** PREVAILING WIND SPEED(KNOTS) **** **** **** **** **** **** **** **** **** **** 14.0 13.5 **** PREVAILING WIND PERCENT ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 18.0 27.7 ***** CALMS PERCENT OF WIND ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 59.3 58.7 ***** NO. OF WIND OBSERVATION 0 0 0 0 **** **** 0 0 0 54 150 155 359 VECTOR WIND DIRECTION (MEAN) *** *** *** *** *** *** *** *** *** *** 195 227 *** VECTOR WIND MAGNITUDE(KNOTS) **** **** **** **** **** **** **** **** **** **** 2.0 4.4 **** WIND STEADINESES (MEAN %) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 45.5 81.5 ***** WIND SPEED (MEAN KNOTS) **** **** **** **** **** **** **** **** **** **** 4.4 5.4 **** FASTEST WIND DIRECTION *** *** *** *** *** *** *** *** *** *** 240 270 *** FASTEST WIND SPEED (KNOTS) *** *** *** *** *** *** *** *** *** *** 25 27 *** DAY ** ** ** ** ** ** ** ** ** ** 29 25 DAYS WITH SKY CLEAR (0-2)/8 10 6 9 6 **** **** 18 21 19 7 11 12 **** DAYS WITH P.CLOUDY (3-6)/8 10 9 12 13 **** **** 9 10 8 15 11 14 **** DAYS WITH CLOUDY (7-8)/8 11 13 10 11 **** **** 4 0 3 9 8 5 **** DAYS WITH VISIBILITY =< 2 KM 1 2 0 0 **** **** 0 0 3 9 9 1 **** DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 864.7 862.5 863.1 862.8 ****** ****** 862.6 864.2 867.7 866.5 868.2 863.6 ****** MAX. QFE PRESSURE IN HPA 875.6 870.7 874.2 876.9 ****** ****** 870.1 872.0 873.1 875.2 877.1 874.8 ****** DAY-HOUR 26- 9 18- 6 1- 9 27- 9 **-** **-** 20- 3 3- 9 21- 3 9- 6 11- 6 22- 6 MIN. QFE PRESSURE IN HPA 852.8 854.6 853.0 855.2 ****** ****** 852.3 857.8 861.4 859.2 850.3 853.7 ****** DAY-HOUR 1- 3 11-15 25-12 19-15 **-** **-** 2- 3 17-12 5-15 24-15 29- 9 1-12 MEAN QNH PRESSURE IN HPA 1014.8 1012.2 1012.9 1012.6 ****** ****** 1012.3 1014.2 1018.1 1016.8 1018.8 1013.5 ****** MAX. QNH PRESSURE IN HPA 1027.2 1021.6 1025.6 1028.6 ****** ****** 1020.9 1023.1 1024.3 1026.7 1028.9 1026.2 ****** DAY-HOUR 26- 9 18- 6 1- 9 27- 9 **-** **-** 20- 3 3- 9 21- 3 9- 6 11- 6 22- 6 MIN. QNH PRESSURE IN HPA 1001.2 1003.2 1001.4 1003.9 ****** ****** 1000.6 1006.9 1011.0 1008.5 998.4 1002.2 ****** DAY-HOUR 1- 3 11-15 25-12 19-15 **-** **-** 2- 3 17-12 5-15 24-15 29- 9 1-12 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 864.2 861.9 863.3 863.0 ****** ****** 863.3 865.0 868.0 866.8 868.5 863.4 ****** MAX. QFE PRESSURE IN HPA 874.5 869.0 872.3 876.0 ****** ****** 870.1 870.0 873.1 874.1 876.1 873.3 ****** DAY 26 18 4 28 ** ** 20 29 21 9 11 22 MIN. QFE PRESSURE IN HPA 852.8 855.5 855.0 856.5 ****** ****** 852.3 859.9 863.4 860.8 852.4 854.2 ****** DAY 1 8 25 13 ** ** 2 6 17 4 29 1 MEAN QNH PRESSURE IN HPA 1014.2 1011.6 1013.2 1012.9 ****** ****** 1013.1 1015.0 1018.5 1017.2 1019.1 1013.3 ****** MAX. QNH PRESSURE IN HPA 1025.9 1019.6 1023.4 1027.6 ****** ****** 1020.9 1020.8 1024.3 1025.5 1027.7 1024.5 ****** DAY 26 18 4 28 ** ** 20 29 21 9 11 22 MIN. QNH PRESSURE IN HPA 1001.2 1004.3 1003.7 1005.4 ****** ****** 1000.6 1009.3 1013.3 1010.3 1000.7 1002.8 ****** DAY 1 8 25 13 ** ** 2 6 17 4 29 1 MEAN QFF PRESSURE IN HPA 1019.3 1014.4 1014.8 1010.5 ****** ****** 1005.9 1008.2 1012.8 1014.2 1018.8 1016.3 ****** MAX. QFF PRESSURE IN HPA 1034.8 1024.2 1032.0 1030.1 ****** ****** 1013.8 1014.7 1024.1 1023.7 1028.5 1032.6 ****** DAY 26 19 5 28 ** ** 20 29 21 9 11 22 MIN. QFF PRESSURE IN HPA 1003.5 1004.9 1003.0 1000.2 ****** ****** 991.6 1001.6 1004.5 1004.6 999.1 1006.3 ****** DAY 1 16 25 20 ** ** 2 14 17 24 29 1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 865.0 862.7 863.6 863.7 ****** ****** 863.5 865.1 868.6 867.6 869.2 864.4 ****** MAX. QFE PRESSURE IN HPA 874.9 870.7 873.1 875.9 ****** ****** 869.5 870.2 872.4 875.2 877.1 874.8 ****** DAY 26 18 4 27 ** ** 20 29 23 9 11 22 MIN. QFE PRESSURE IN HPA 853.4 855.9 854.8 857.0 ****** ****** 856.4 859.8 863.6 860.9 852.4 854.4 ****** DAY 1 11 25 13 ** ** 6 14 5 4 29 1 MEAN QNH PRESSURE IN HPA 1015.1 1012.4 1013.5 1013.6 ****** ****** 1013.4 1015.3 1019.1 1018.0 1019.9 1014.4 ****** MAX. QNH PRESSURE IN HPA 1026.4 1021.6 1024.3 1027.5 ****** ****** 1020.2 1021.0 1023.5 1026.7 1028.9 1026.2 ****** DAY 26 18 4 27 ** ** 20 29 23 9 11 22 MIN. QNH PRESSURE IN HPA 1001.9 1004.7 1003.5 1006.0 ****** ****** 1005.3 1009.2 1013.5 1010.4 1000.7 1003.0 ****** DAY 1 11 25 13 ** ** 6 14 5 4 29 1 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 865.2 862.8 863.2 863.2 ****** ****** 862.8 864.5 868.0 866.7 868.4 863.8 ****** MAX. QFE PRESSURE IN HPA 875.6 870.1 874.2 876.9 ****** ****** 869.6 872.0 871.7 874.7 876.0 872.8 ****** DAY 26 18 1 27 ** ** 20 3 20 9 10 22 MIN. QFE PRESSURE IN HPA 856.7 855.4 853.8 856.4 ****** ****** 855.5 859.1 862.9 859.9 850.3 854.4 ****** DAY 7 11 25 19 ** ** 6 14 17 4 29 1 MEAN QNH PRESSURE IN HPA 1015.4 1012.6 1013.1 1013.0 ****** ****** 1012.6 1014.5 1018.5 1017.0 1019.0 1013.8 ****** MAX. QNH PRESSURE IN HPA 1027.2 1020.9 1025.6 1028.6 ****** ****** 1020.3 1023.1 1022.7 1026.1 1027.6 1024.0 ****** DAY 26 18 1 27 ** ** 20 3 20 9 10 22 MIN. QNH PRESSURE IN HPA 1005.6 1004.2 1002.3 1005.3 ****** ****** 1004.3 1008.4 1012.7 1009.3 998.4 1003.0 ****** DAY 7 11 25 19 ** ** 6 14 17 4 29 1 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 864.5 862.6 862.7 862.2 ****** ****** 861.8 863.4 866.8 865.7 867.6 863.0 ****** MAX. QFE PRESSURE IN HPA 875.5 869.5 872.0 876.5 ****** ****** 867.3 868.4 871.8 873.5 876.6 872.8 ****** DAY 26 18 3 27 ** ** 20 29 20 9 21 21 MIN. QFE PRESSURE IN HPA 855.1 854.8 853.0 855.4 ****** ****** 853.8 857.8 862.0 859.7 850.7 853.7 ****** DAY 4 11 25 19 ** ** 6 17 16 24 29 1 MEAN QNH PRESSURE IN HPA 1014.6 1012.3 1012.4 1011.9 ****** ****** 1011.4 1013.3 1017.2 1015.9 1018.0 1012.8 ****** MAX. QNH PRESSURE IN HPA 1027.0 1020.2 1023.1 1028.2 ****** ****** 1017.7 1019.0 1022.8 1024.8 1028.3 1024.0 ****** DAY 26 18 3 27 ** ** 20 29 20 9 21 21 MIN. QNH PRESSURE IN HPA 1003.8 1003.5 1001.4 1004.2 ****** ****** 1002.3 1006.9 1011.7 1009.1 998.8 1002.2 ****** DAY 4 11 25 19 ** ** 6 17 16 24 29 1 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 864.7 862.4 862.7 862.2 ****** ****** 861.6 863.3 867.0 865.7 867.4 863.4 ****** MAX. QFE PRESSURE IN HPA 874.9 869.5 872.3 876.5 ****** ****** 866.9 868.0 872.3 873.0 874.8 873.2 ****** DAY 17 18 4 27 ** ** 20 29 20 9 10 21 MIN. QFE PRESSURE IN HPA 855.7 854.6 854.8 855.2 ****** ****** 854.1 857.8 861.4 859.2 851.2 854.1 ****** DAY 4 11 27 19 ** ** 6 17 5 24 29 1 MEAN QNH PRESSURE IN HPA 1014.7 1012.2 1012.4 1011.9 ****** ****** 1011.2 1013.2 1017.3 1015.9 1017.8 1013.3 ****** MAX. QNH PRESSURE IN HPA 1026.4 1020.2 1023.4 1028.2 ****** ****** 1017.3 1018.5 1023.4 1024.2 1026.2 1024.4 ****** DAY 17 18 4 27 ** ** 20 29 20 9 10 21 MIN. QNH PRESSURE IN HPA 1004.5 1003.2 1003.5 1003.9 ****** ****** 1002.7 1006.9 1011.0 1008.5 999.4 1002.7 ****** DAY 4 11 27 19 ** ** 6 17 5 24 29 1 MEAN QFF PRESSURE IN HPA 1019.7 1015.0 1013.8 1009.5 ****** ****** 1003.6 1005.9 1011.4 1012.8 1017.5 1016.3 ****** MAX. QFF PRESSURE IN HPA 1035.8 1026.6 1031.0 1031.0 ****** ****** 1010.2 1013.3 1020.8 1021.8 1026.9 1032.2 ****** DAY 26 18 4 27 ** ** 20 29 20 8 11 22 MIN. QFF PRESSURE IN HPA 1003.2 1004.2 1001.7 997.7 ****** ****** 994.0 998.3 1003.1 1005.2 998.5 1005.5 ****** DAY 4 11 25 19 ** ** 6 17 5 24 29 1 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 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1980 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -3.4 -2.7 3.5 13.7 17.2 20.1 23.3 19.7 17.1 11.1 8.9 3.8 11.0 MINIMUN AIR TEMPERATURE (C) -8.8 -8.0 -2.6 5.0 7.9 10.6 14.0 12.8 9.4 5.5 3.9 -1.0 4.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 27 25 13 1 0 0 0 0 0 0 0 6 72 DAYS WITH FREEZING MIN.<= 0 31 29 20 3 0 0 0 0 0 2 3 27 115 TEMPERATURE RECORDS LOWEST(C) -18.0 -20.0 -11.0 -4.0 3.0 7.0 11.0 9.0 3.0 -1.0 -3.0 -8.0 -20.0 DAY 25 1 1 17 1 1 11 11 23 30 24 13 MAXIMUM AIR TEMPERATURE (C) 2.2 2.2 8.4 20.2 23.0 25.7 28.9 25.0 24.2 17.0 14.6 9.2 16.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 4 8 13 4 7 0 0 0 36 DAYS WITH MAXIMUM TEMP. <= 0 12 12 2 0 0 0 0 0 0 0 0 0 26 TEMPERATURE RECORDS HIGHEST(C) 9.0 7.0 20.0 27.0 31.0 34.0 35.0 32.0 34.0 27.0 21.0 20.0 35.0 DAY 5 14 29 11 21 3 24 19 6 4 12 6 DIF. BETWEEN (MAX.-MIN.) (C) 11.0 10.2 11.0 15.2 15.1 15.1 14.9 12.2 14.8 11.5 10.7 10.2 12.6 MEAN DAILY TEMP. (MDT) (C) -3.3 -2.9 2.9 12.6 15.4 18.2 21.5 18.9 16.8 11.2 9.2 4.1 10.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 1.5 12.0 36.5 4.0 5.0 0.0 0.0 0.0 59.0 HEATING DEG. DAYS(BASE 18 0C) 660.0 606.5 468.0 163.5 96.5 34.5 1.0 19.0 63.5 213.5 262.5 430.0 3018.5 DEWPOINT (MEAN C) -7.5 -6.6 -1.4 3.0 8.7 10.0 12.9 12.2 9.6 5.5 3.3 -2.6 3.9 MIXING RATIO (G/KG) 2.65 2.83 4.21 5.78 8.38 9.19 11.14 10.70 8.94 6.66 5.74 3.76 6.66 VAPOUR PRESSURE (HPA) 3.65 3.90 5.79 7.91 11.47 12.56 15.16 14.58 12.25 9.17 7.92 5.19 9.13 SATURATION DEF. (HPA) 1.45 1.36 2.90 8.98 9.53 12.47 14.70 9.33 8.73 4.92 3.87 3.35 6.80 RELATIVE HUMIDITY (MEAN %) 75 75 72 53 62 57 55 65 66 72 70 67 66 RELATIVE HUMIDITY (MAX. %) 85 83 83 73 80 76 73 80 87 86 85 82 81 RELATIVE HUMIDITY (MIN. %) 64 66 62 35 47 43 42 51 47 56 57 53 52 RELATIVE HUMIDITY (MEAN% 03UTC) 83 83 82 71 79 75 71 79 86 84 83 78 80 RELATIVE HUMIDITY (MEAN% 09UTC) 69 72 67 42 52 45 44 54 50 61 62 60 57 RELATIVE HUMIDITY (MEAN% 15UTC) 74 75 72 51 62 60 56 69 69 76 70 65 67 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 62.8 57.0 37.6 24.5 73.0 4.2 0.4 0.4 2.2 55.0 40.4 47.4 404.9 DAYS WITH PRECIPITATION >=10 2 0 0 0 4 0 0 0 0 3 2 2 13 DAYS WITH PRECIPITATION >= 5 4 6 2 3 5 0 0 0 0 3 3 2 28 DAYS WITH PRECIPITATION >= 1 8 14 12 5 6 2 0 0 2 5 8 4 66 DAYS WITH PRECIPITATION 11 15 13 6 7 3 1 1 2 7 9 5 80 GREATEST DAILY PRECIPITATION 17.2 8.0 6.0 8.0 28.0 2.0 0.4 0.4 1.2 19.0 12.0 24.0 28.0 DAY 30 29 7 16 15 17 23 28 8 29 19 31 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 1 1 DAYS WITH SNOW OR SLEET 9 13 6 1 0 0 0 0 0 1 0 4 34 DAYS WITH DUST 0 0 0 0 0 2 1 0 0 0 0 0 3 WIND DIRECTION (PREVAILING) 225 90 90 225 90 90 90 90 90 90 225 225 90 PREVAILING WIND SPEED(KNOTS) 15.5 9.8 11.1 12.7 10.2 11.6 11.1 11.9 9.9 9.6 12.3 12.1 10.7 PREVAILING WIND PERCENT 13.5 17.2 12.3 24.0 20.6 32.7 50.0 40.0 24.7 22.6 20.0 12.9 20.6 CALMS PERCENT OF WIND 67.7 62.1 56.1 40.7 45.2 36.7 31.2 37.4 50.7 52.3 50.7 68.4 49.9 NO. OF WIND OBSERVATION 155 145 155 150 155 150 154 155 150 155 150 155 1829 VECTOR WIND DIRECTION (MEAN) 214 140 226 242 84 81 83 81 88 120 234 251 109 VECTOR WIND MAGNITUDE(KNOTS) 1.5 1.3 1.8 3.4 2.2 4.6 7.3 6.5 3.0 1.6 2.8 2.5 1.4 WIND STEADINESES (MEAN %) 37.5 37.1 29.5 51.5 38.6 63.0 96.1 97.0 60.0 35.6 57.1 67.6 25.5 WIND SPEED (MEAN KNOTS) 4.0 3.5 6.1 6.6 5.7 7.3 7.6 6.7 5.0 4.5 4.9 3.7 5.5 FASTEST WIND DIRECTION 240 220 270 270 210 240 90 90 210 270 240 270 270 FASTEST WIND SPEED (KNOTS) 30 20 36 20 24 20 20 20 20 26 22 26 36 DAY 28 6 29 26 3 4 6 10 30 1 9 5 DAYS WITH SKY CLEAR (0-2)/8 9 7 6 6 9 19 24 14 16 11 7 9 137 DAYS WITH P.CLOUDY (3-6)/8 11 9 13 16 14 8 7 11 9 10 13 12 133 DAYS WITH CLOUDY (7-8)/8 11 13 12 8 8 3 0 6 5 10 10 10 96 DAYS WITH VISIBILITY =< 2 KM 6 2 6 0 3 5 1 2 6 6 4 5 46 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1980 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 863.5 864.0 861.8 860.6 863.7 863.0 862.5 863.3 864.8 866.3 865.7 864.9 863.7 MAX. QFE PRESSURE IN HPA 872.7 872.2 870.4 870.4 875.8 870.4 869.1 871.4 872.3 872.5 875.2 873.4 875.8 DAY-HOUR 31- 9 2- 6 27- 6 1- 6 16- 6 24- 3 11- 6 30- 3 8- 6 9- 6 4- 6 17- 6 MIN. QFE PRESSURE IN HPA 851.7 856.8 847.5 852.6 857.4 857.6 850.9 855.3 857.7 859.0 856.4 853.3 847.5 DAY-HOUR 28-15 18- 3 19- 3 27- 6 23-15 21-15 2-15 19-12 6-15 1-12 9-12 11-12 MEAN QNH PRESSURE IN HPA 1013.4 1014.0 1011.5 1010.0 1013.6 1012.8 1012.3 1013.2 1014.9 1016.5 1015.9 1015.0 1013.6 MAX. QNH PRESSURE IN HPA 1023.9 1023.3 1021.2 1021.2 1027.4 1021.2 1019.8 1022.4 1023.4 1023.6 1026.7 1024.7 1027.4 DAY-HOUR 31- 9 2- 6 27- 6 1- 6 16- 6 24- 3 11- 6 30- 3 8- 6 9- 6 4- 6 17- 6 MIN. QNH PRESSURE IN HPA 999.9 1005.8 995.2 1001.0 1006.4 1006.7 999.0 1004.0 1006.8 1008.3 1005.3 1001.8 995.2 DAY-HOUR 28-15 18- 3 19- 3 27- 6 23-15 21-15 2-15 19-12 6-15 1-12 9-12 11-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 863.4 864.0 861.8 861.4 864.0 863.8 863.6 864.0 865.6 866.6 866.1 865.1 864.1 MAX. QFE PRESSURE IN HPA 870.5 871.4 869.0 870.0 874.6 870.4 868.8 871.4 871.8 871.8 874.7 872.3 874.7 DAY 31 2 27 1 16 24 11 30 8 9 4 20 MIN. QFE PRESSURE IN HPA 852.2 856.8 847.5 852.7 858.2 858.6 859.0 857.8 860.0 859.8 856.8 855.3 847.5 DAY 29 18 19 16 14 17 6 19 21 4 22 11 MEAN QNH PRESSURE IN HPA 1013.2 1014.0 1011.4 1011.0 1013.9 1013.7 1013.5 1014.0 1015.8 1016.9 1016.3 1015.2 1014.1 MAX. QNH PRESSURE IN HPA 1021.4 1022.4 1019.6 1020.8 1026.0 1021.2 1019.4 1022.4 1022.8 1022.8 1026.1 1023.4 1026.1 DAY 31 2 27 1 16 24 11 30 8 9 4 20 MIN. QNH PRESSURE IN HPA 1000.5 1005.8 995.2 1001.1 1007.4 1007.8 1008.3 1006.9 1009.4 1009.2 1005.8 1004.0 995.2 DAY 29 18 19 16 14 17 6 19 21 4 22 11 MEAN QFF PRESSURE IN HPA 1020.1 1020.5 1014.4 1008.3 1009.5 1007.7 1005.7 1007.8 1011.4 1015.4 1015.8 1017.7 1012.9 MAX. QFF PRESSURE IN HPA 1033.5 1035.2 1027.7 1018.9 1024.8 1016.9 1013.9 1019.3 1019.2 1024.4 1026.0 1028.1 1035.2 DAY 31 2 7 1 16 11 18 30 9 30 4 20 MIN. QFF PRESSURE IN HPA 1001.9 1008.9 996.3 998.0 999.9 1000.7 999.3 999.0 1004.8 1001.8 1003.2 1004.0 996.3 DAY 29 18 19 4 14 7 6 20 7 4 22 28 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1980 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 864.1 864.8 862.5 861.3 864.4 863.8 863.5 864.2 866.0 867.2 866.8 865.9 864.5 MAX. QFE PRESSURE IN HPA 872.1 872.2 870.4 870.4 875.8 870.2 869.1 871.4 872.3 872.5 875.2 873.4 875.8 DAY 31 2 27 1 16 11 11 30 8 9 4 17 MIN. QFE PRESSURE IN HPA 852.8 856.8 849.6 852.6 858.7 859.1 859.0 857.1 860.2 859.5 858.2 855.8 849.6 DAY 29 18 19 27 14 17 6 19 21 4 9 11 MEAN QNH PRESSURE IN HPA 1014.1 1014.9 1012.3 1010.9 1014.4 1013.8 1013.4 1014.2 1016.2 1017.6 1017.2 1016.2 1014.6 MAX. QNH PRESSURE IN HPA 1023.2 1023.3 1021.2 1021.2 1027.4 1021.0 1019.8 1022.4 1023.4 1023.6 1026.7 1024.7 1027.4 DAY 31 2 27 1 16 11 11 30 8 9 4 17 MIN. QNH PRESSURE IN HPA 1001.2 1005.8 997.6 1001.0 1007.9 1008.4 1008.3 1006.1 1009.6 1008.8 1007.4 1004.6 997.6 DAY 29 18 19 27 14 17 6 19 21 4 9 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 863.9 864.6 862.1 860.5 863.9 863.1 862.7 863.5 864.9 866.3 866.0 865.1 863.9 MAX. QFE PRESSURE IN HPA 872.7 872.1 870.2 870.0 875.2 869.8 868.8 870.5 872.2 871.6 874.6 872.9 875.2 DAY 31 2 27 1 16 11 11 30 8 9 4 17 MIN. QFE PRESSURE IN HPA 853.0 857.0 849.5 853.0 859.3 858.6 858.3 856.1 860.1 859.5 857.0 854.8 849.5 DAY 29 18 2 25 23 7 6 19 6 4 9 11 MEAN QNH PRESSURE IN HPA 1013.8 1014.6 1011.8 1010.0 1013.8 1013.0 1012.5 1013.3 1014.9 1016.5 1016.2 1015.3 1013.8 MAX. QNH PRESSURE IN HPA 1023.9 1023.2 1021.0 1020.8 1026.7 1020.6 1019.4 1021.4 1023.3 1022.6 1026.0 1024.1 1026.7 DAY 31 2 27 1 16 11 11 30 8 9 4 17 MIN. QNH PRESSURE IN HPA 1001.4 1006.0 997.4 1001.4 1008.6 1007.8 1007.5 1005.0 1009.5 1008.8 1006.0 1003.5 997.4 DAY 29 18 2 25 23 7 6 19 6 4 9 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 862.9 863.4 861.2 859.7 863.3 862.2 861.6 862.5 863.7 865.4 864.7 864.1 862.9 MAX. QFE PRESSURE IN HPA 872.2 871.2 869.4 867.7 873.8 868.2 867.7 869.4 871.5 870.7 873.4 871.6 873.8 DAY 31 2 27 1 16 11 17 30 8 9 4 17 MIN. QFE PRESSURE IN HPA 852.0 857.3 848.1 853.4 858.9 857.7 857.5 855.3 858.3 859.0 856.4 853.3 848.1 DAY 28 18 2 3 14 21 28 19 13 1 9 11 MEAN QNH PRESSURE IN HPA 1012.7 1013.2 1010.7 1009.0 1013.2 1011.9 1011.3 1012.2 1013.6 1015.6 1014.7 1014.1 1012.7 MAX. QNH PRESSURE IN HPA 1023.3 1022.2 1020.1 1018.2 1025.1 1018.7 1018.2 1020.1 1022.5 1021.6 1024.7 1022.6 1025.1 DAY 31 2 27 1 16 11 17 30 8 9 4 17 MIN. QNH PRESSURE IN HPA 1000.3 1006.3 995.8 1001.9 1008.1 1006.8 1006.6 1004.0 1007.5 1008.3 1005.3 1001.8 995.8 DAY 28 18 2 3 14 21 28 19 13 1 9 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1980 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 863.3 863.5 861.6 859.9 863.1 861.9 861.2 862.6 864.0 865.8 865.0 864.4 863.0 MAX. QFE PRESSURE IN HPA 872.6 871.8 869.8 867.8 872.7 868.0 867.7 870.2 871.7 872.0 874.0 871.2 874.0 DAY 31 2 27 1 16 23 17 29 8 20 3 17 MIN. QFE PRESSURE IN HPA 851.7 857.9 848.4 852.9 857.4 857.6 850.9 855.3 857.7 859.4 856.5 853.8 848.4 DAY 28 18 2 3 23 21 2 19 6 4 9 11 MEAN QNH PRESSURE IN HPA 1013.1 1013.4 1011.2 1009.3 1012.9 1011.6 1010.7 1012.4 1014.0 1016.0 1015.1 1014.4 1012.8 MAX. QNH PRESSURE IN HPA 1023.7 1022.8 1020.6 1018.3 1023.9 1018.5 1018.2 1021.0 1022.7 1023.1 1025.3 1022.2 1025.3 DAY 31 2 27 1 16 23 17 29 8 20 3 17 MIN. QNH PRESSURE IN HPA 999.9 1007.0 996.2 1001.3 1006.4 1006.7 999.0 1004.0 1006.8 1008.7 1005.4 1002.3 996.2 DAY 28 18 2 3 23 21 2 19 6 4 9 11 MEAN QFF PRESSURE IN HPA 1020.0 1019.7 1013.9 1006.5 1008.2 1005.4 1002.7 1005.9 1009.4 1014.4 1014.5 1016.9 1011.5 MAX. QFF PRESSURE IN HPA 1036.3 1034.8 1026.4 1016.2 1022.0 1013.4 1011.9 1018.2 1019.7 1024.4 1024.6 1025.4 1036.3 DAY 31 2 7 1 16 24 17 29 8 20 3 17 MIN. QFF PRESSURE IN HPA 1000.9 1010.9 1001.4 996.9 999.1 998.2 991.3 996.1 998.9 1002.0 1002.2 1005.2 991.3 DAY 28 18 2 3 23 4 2 19 6 4 9 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 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1981 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.5 2.6 5.9 8.9 13.3 17.6 20.9 19.9 18.7 13.1 7.8 5.7 11.3 MINIMUN AIR TEMPERATURE (C) -3.6 -2.2 0.0 2.9 7.0 10.4 13.2 14.1 10.9 7.0 2.0 0.4 5.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 14 13 6 3 0 0 0 0 0 0 1 2 39 DAYS WITH FREEZING MIN.<= 0 23 24 17 5 0 0 0 0 0 0 15 17 101 TEMPERATURE RECORDS LOWEST(C) -14.0 -6.0 -13.0 -13.0 2.0 5.0 10.0 9.0 5.0 2.0 -6.0 -6.0 -14.0 DAY 1 4 4 2 3 7 21 3 24 17 23 20 MAXIMUM AIR TEMPERATURE (C) 6.5 7.4 11.5 14.9 19.5 23.4 26.1 24.7 25.0 19.1 13.8 11.6 16.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 1 5 2 6 0 0 0 14 DAYS WITH MAXIMUM TEMP. <= 0 2 4 4 1 0 0 0 0 0 0 0 0 11 TEMPERATURE RECORDS HIGHEST(C) 11.0 14.0 22.0 28.0 28.0 32.0 32.0 34.0 33.0 27.0 22.0 16.0 34.0 DAY 8 14 20 20 8 3 28 28 11 3 1 13 DIF. BETWEEN (MAX.-MIN.) (C) 10.1 9.6 11.5 12.0 12.5 13.0 12.9 10.6 14.1 12.1 11.8 11.2 11.7 MEAN DAILY TEMP. (MDT) (C) 1.5 2.6 5.7 8.9 13.2 16.9 19.6 19.4 17.9 13.0 7.9 6.0 11.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 1.0 5.5 3.0 9.5 0.0 0.0 0.0 19.0 HEATING DEG. DAYS(BASE 18 0C) 513.0 432.0 380.0 275.0 149.5 45.5 3.0 5.5 40.0 154.5 302.5 371.5 2672.0 DEWPOINT (MEAN C) -5.1 -4.1 -0.4 2.5 5.8 9.9 12.7 13.2 8.6 6.9 -0.8 -3.2 3.8 MIXING RATIO (G/KG) 3.13 3.36 4.47 5.53 6.85 9.08 10.97 11.31 8.41 7.35 4.29 3.63 6.53 VAPOUR PRESSURE (HPA) 4.31 4.63 6.13 7.58 9.40 12.41 14.93 15.41 11.56 10.15 5.91 5.01 8.95 SATURATION DEF. (HPA) 2.81 3.15 3.98 4.95 6.71 8.42 10.75 8.55 11.45 5.63 5.39 4.59 6.37 RELATIVE HUMIDITY (MEAN %) 63 64 68 68 64 64 62 68 57 69 58 57 64 RELATIVE HUMIDITY (MAX. %) 77 81 84 85 84 86 83 86 78 88 72 73 81 RELATIVE HUMIDITY (MIN. %) 51 50 52 51 46 44 48 53 40 51 45 42 48 RELATIVE HUMIDITY (MEAN% 03UTC) 74 79 82 82 82 84 83 85 76 86 71 69 79 RELATIVE HUMIDITY (MEAN% 09UTC) 55 52 59 54 47 46 52 55 42 57 47 47 51 RELATIVE HUMIDITY (MEAN% 15UTC) 64 63 67 70 63 65 62 72 62 73 58 55 65 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 27.0 29.0 54.6 80.9 43.3 34.5 1.0 14.9 3.0 25.6 25.0 10.4 349.2 DAYS WITH PRECIPITATION >=10 1 1 1 3 2 0 0 0 0 1 1 1 11 DAYS WITH PRECIPITATION >= 5 3 2 5 5 2 3 0 1 0 2 2 1 26 DAYS WITH PRECIPITATION >= 1 6 6 10 10 11 10 0 4 1 6 5 1 70 DAYS WITH PRECIPITATION 6 7 14 12 15 11 2 6 3 7 5 2 90 GREATEST DAILY PRECIPITATION 10.0 12.0 17.0 21.6 15.0 7.0 0.6 7.0 2.0 10.4 11.0 10.0 21.6 DAY 12 21 31 12 22 24 19 8 22 8 21 29 DAY WITH THUNDER STORM 0 0 0 0 3 1 0 1 0 0 0 0 5 DAYS WITH SNOW OR SLEET 1 6 7 4 0 0 0 0 0 0 2 1 21 DAYS WITH DUST 0 1 0 0 0 0 1 0 1 0 2 0 5 WIND DIRECTION (PREVAILING) 225 225 225 90 90 90 90 90 90 90 225 270 90 PREVAILING WIND SPEED(KNOTS) 14.2 13.7 13.0 10.1 10.8 11.0 11.4 12.1 9.8 9.3 12.9 15.2 10.7 PREVAILING WIND PERCENT 38.1 26.4 12.9 15.9 18.3 25.0 39.7 40.0 31.3 12.3 18.0 16.1 17.3 CALMS PERCENT OF WIND 45.2 45.7 56.1 51.1 43.0 50.0 42.9 38.7 50.7 77.4 68.0 65.8 52.7 NO. OF WIND OBSERVATION 155 140 155 176 186 180 156 155 150 155 150 155 1913 VECTOR WIND DIRECTION (MEAN) 229 231 233 152 149 76 83 81 90 99 234 244 142 VECTOR WIND MAGNITUDE(KNOTS) 5.9 3.9 1.9 1.3 0.7 4.4 6.3 6.9 2.9 1.5 2.8 4.0 1.1 WIND STEADINESES (MEAN %) 83.1 60.9 37.3 27.1 12.1 84.6 95.5 97.2 56.9 71.4 73.7 81.6 20.8 WIND SPEED (MEAN KNOTS) 7.1 6.4 5.1 4.8 5.8 5.2 6.6 7.1 5.1 2.1 3.8 4.9 5.3 FASTEST WIND DIRECTION 240 270 240 270 270 90 60 90 270 90 220 270 240 FASTEST WIND SPEED (KNOTS) 32 30 28 18 20 20 20 18 22 18 20 28 32 DAY 17 9 13 8 12 28 24 24 12 5 2 6 DAYS WITH SKY CLEAR (0-2)/8 18 7 5 4 6 12 18 11 19 10 14 14 138 DAYS WITH P.CLOUDY (3-6)/8 8 11 14 14 18 14 11 11 7 10 12 10 140 DAYS WITH CLOUDY (7-8)/8 5 10 12 12 7 4 2 9 4 11 4 7 87 DAYS WITH VISIBILITY =< 2 KM 2 2 8 11 5 2 0 3 3 10 4 4 54 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1981 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 863.0 862.5 860.7 861.3 862.7 863.4 862.6 863.4 867.1 869.0 864.2 864.2 863.7 MAX. QFE PRESSURE IN HPA 874.0 870.9 873.4 869.3 872.5 870.6 868.0 869.5 874.0 876.7 871.5 873.0 876.7 DAY-HOUR 29- 6 23- 6 8- 6 19- 6 21-18 9-18 24- 6 11-12 22-15 28- 6 15- 6 1- 6 MIN. QFE PRESSURE IN HPA 854.5 854.3 847.3 846.7 846.7 854.6 857.0 857.5 859.0 862.0 852.2 854.4 846.7 DAY-HOUR 3-12 2-15 13- 3 30-15 1- 3 4-12 1-15 28-12 11-15 12-12 5- 9 18-15 MEAN QNH PRESSURE IN HPA 1012.9 1012.2 1010.2 1010.9 1012.5 1013.2 1012.4 1013.2 1017.5 1019.6 1014.2 1014.2 1013.6 MAX. QNH PRESSURE IN HPA 1025.3 1021.8 1024.7 1020.0 1023.6 1021.5 1018.5 1020.2 1025.3 1028.4 1022.5 1024.2 1028.4 DAY-HOUR 29- 6 23- 6 8- 6 19- 6 21-18 9-18 24- 6 11-12 22-15 28- 6 15- 6 1- 6 MIN. QNH PRESSURE IN HPA 1003.1 1002.9 994.9 994.2 994.2 1003.2 1006.0 1006.6 1008.3 1011.7 1000.5 1003.0 994.2 DAY-HOUR 3-12 2-15 13- 3 30-15 1- 3 4-12 1-15 28-12 11-15 12-12 5- 9 18-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1009.3 1007.8 ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1023.8 1017.8 ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** 21-18 10- 3 **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 993.0 996.6 ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** 1- 3 15-15 **-** **-** **-** **-** **-** **-** 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 863.2 862.6 861.0 861.7 862.6 863.8 863.2 863.8 867.6 869.3 864.2 864.4 863.9 MAX. QFE PRESSURE IN HPA 872.8 869.0 872.0 868.4 871.1 870.4 867.6 868.6 873.7 875.6 871.0 872.2 875.6 DAY 29 23 8 10 21 10 25 4 23 28 16 1 MIN. QFE PRESSURE IN HPA 855.0 854.5 847.3 850.0 846.7 855.7 859.0 860.1 859.4 862.9 854.4 857.2 846.7 DAY 3 9 13 30 1 16 2 13 12 13 13 18 MEAN QNH PRESSURE IN HPA 1013.1 1012.3 1010.5 1011.3 1012.4 1013.7 1013.0 1013.7 1018.1 1019.9 1014.2 1014.4 1013.9 MAX. QNH PRESSURE IN HPA 1024.0 1019.6 1023.1 1019.0 1022.0 1021.2 1018.1 1019.2 1025.0 1027.2 1021.9 1023.3 1027.2 DAY 29 23 8 10 21 10 25 4 23 28 16 1 MIN. QNH PRESSURE IN HPA 1003.7 1003.1 994.9 998.0 994.2 1004.5 1008.3 1009.5 1008.7 1012.7 1003.0 1006.2 994.2 DAY 3 9 13 30 1 16 2 13 12 13 13 18 MEAN QFF PRESSURE IN HPA 1017.1 1015.5 1012.0 1011.3 1009.6 1008.7 1006.3 1007.1 1013.0 1017.6 1014.7 1015.9 1012.4 MAX. QFF PRESSURE IN HPA 1029.9 1025.5 1026.4 1022.1 1023.0 1017.8 1011.8 1012.8 1024.3 1025.6 1025.5 1025.3 1029.9 DAY 29 23 8 2 21 10 25 3 23 29 16 1 MIN. QFF PRESSURE IN HPA 1006.4 1002.1 992.2 995.5 993.0 997.5 999.2 1002.3 998.7 1007.9 998.8 1004.3 992.2 DAY 11 9 13 30 1 16 10 13 12 16 13 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1981 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 863.9 863.4 861.5 862.1 863.1 863.9 863.5 864.2 868.1 870.0 865.2 865.4 864.5 MAX. QFE PRESSURE IN HPA 874.0 870.9 873.4 869.3 872.4 870.4 868.0 869.1 874.0 876.7 871.5 873.0 876.7 DAY 29 23 8 19 21 9 24 3 23 28 15 1 MIN. QFE PRESSURE IN HPA 855.3 855.3 847.5 849.2 848.3 856.9 859.0 860.5 860.3 864.0 854.8 857.8 847.5 DAY 3 9 13 30 1 15 1 13 12 15 13 18 MEAN QNH PRESSURE IN HPA 1013.9 1013.3 1011.1 1011.8 1012.9 1013.8 1013.3 1014.2 1018.7 1020.7 1015.3 1015.5 1014.5 MAX. QNH PRESSURE IN HPA 1025.3 1021.8 1024.7 1020.0 1023.5 1021.2 1018.5 1019.8 1025.3 1028.4 1022.5 1024.2 1028.4 DAY 29 23 8 19 21 9 24 3 23 28 15 1 MIN. QNH PRESSURE IN HPA 1004.0 1004.0 995.2 997.1 996.1 1005.9 1008.3 1010.0 1009.7 1014.0 1003.5 1006.9 995.2 DAY 3 9 13 30 1 15 1 13 12 15 13 18 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.3 1009.3 1007.7 ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1020.3 1023.8 1016.1 ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 10 21 9 ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** 993.9 993.7 997.8 ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 30 1 16 ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 863.4 862.7 861.0 861.6 862.8 863.5 862.8 863.5 867.4 869.3 864.2 864.5 863.9 MAX. QFE PRESSURE IN HPA 873.1 869.7 873.0 869.0 872.1 870.0 867.3 868.5 873.3 876.6 870.8 872.1 876.6 DAY 29 23 8 19 21 10 30 3 23 28 15 1 MIN. QFE PRESSURE IN HPA 854.9 854.4 848.1 848.7 849.8 855.1 858.2 858.6 860.3 863.8 852.2 855.7 848.1 DAY 3 9 13 30 1 15 1 28 12 12 5 18 MEAN QNH PRESSURE IN HPA 1013.3 1012.5 1010.5 1011.2 1012.6 1013.4 1012.6 1013.3 1017.8 1020.0 1014.2 1014.5 1013.8 MAX. QNH PRESSURE IN HPA 1024.3 1020.4 1024.2 1019.6 1023.2 1020.8 1017.7 1019.1 1024.5 1028.3 1021.7 1023.2 1028.3 DAY 29 23 8 19 21 10 30 3 23 28 15 1 MIN. QNH PRESSURE IN HPA 1003.6 1003.0 995.8 996.5 997.8 1003.8 1007.4 1007.8 1009.7 1013.7 1000.5 1004.5 995.8 DAY 3 9 13 30 1 15 1 28 12 12 5 18 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 862.2 861.8 859.9 860.6 862.2 862.5 862.0 862.8 866.1 868.0 863.5 863.2 862.9 MAX. QFE PRESSURE IN HPA 871.0 868.4 871.0 867.2 871.1 869.1 866.4 869.5 873.1 875.0 870.0 870.8 875.0 DAY 29 22 8 19 21 10 29 11 22 28 15 1 MIN. QFE PRESSURE IN HPA 854.5 854.8 848.8 847.3 850.5 854.6 857.4 857.5 859.0 862.0 856.0 855.2 847.3 DAY 3 1 13 30 1 4 1 28 12 12 4 18 MEAN QNH PRESSURE IN HPA 1011.9 1011.5 1009.3 1010.0 1011.9 1012.3 1011.7 1012.6 1016.4 1018.5 1013.4 1013.0 1012.7 MAX. QNH PRESSURE IN HPA 1021.9 1019.0 1021.9 1017.6 1022.0 1019.8 1016.7 1020.2 1024.3 1026.5 1020.8 1021.7 1026.5 DAY 29 22 8 19 21 10 29 11 22 28 15 1 MIN. QNH PRESSURE IN HPA 1003.1 1003.5 996.6 994.9 998.6 1003.2 1006.4 1006.6 1008.3 1011.7 1004.8 1003.9 994.9 DAY 3 1 13 30 1 4 1 28 12 12 4 18 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1981 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 862.5 861.9 860.3 860.7 862.2 862.7 861.7 862.7 866.4 868.3 864.0 863.6 863.1 MAX. QFE PRESSURE IN HPA 871.3 869.2 871.2 867.4 870.7 869.8 865.8 867.7 874.0 875.0 870.8 871.2 875.0 DAY 29 22 8 19 21 9 29 3 22 28 15 1 MIN. QFE PRESSURE IN HPA 855.5 854.3 849.8 846.7 852.5 854.6 857.0 858.3 859.0 862.0 856.6 854.4 846.7 DAY 3 2 12 30 1 15 1 28 11 12 4 18 MEAN QNH PRESSURE IN HPA 1012.3 1011.5 1009.7 1010.2 1011.9 1012.5 1011.3 1012.4 1016.7 1018.9 1013.9 1013.5 1012.9 MAX. QNH PRESSURE IN HPA 1022.3 1019.9 1022.2 1017.8 1021.6 1020.6 1016.0 1018.2 1025.3 1026.5 1021.7 1022.2 1026.5 DAY 29 22 8 19 21 9 29 3 22 28 15 1 MIN. QNH PRESSURE IN HPA 1004.3 1002.9 997.8 994.2 1000.9 1003.2 1006.0 1007.5 1008.3 1011.7 1005.5 1003.0 994.2 DAY 3 2 12 30 1 15 1 28 11 12 4 18 MEAN QFF PRESSURE IN HPA 1016.1 1014.7 1011.1 1009.9 1009.0 1007.3 1004.4 1005.7 1011.5 1016.4 1014.4 1014.9 1011.3 MAX. QFF PRESSURE IN HPA 1028.8 1025.6 1024.5 1019.4 1022.2 1017.4 1009.0 1012.4 1023.9 1024.5 1025.5 1023.9 1028.8 DAY 29 22 4 10 21 9 24 3 22 28 15 1 MIN. QFF PRESSURE IN HPA 1006.7 1007.1 996.6 992.4 998.9 996.6 997.3 1000.4 1000.0 1007.7 1001.5 1001.3 992.4 DAY 18 1 13 30 1 15 10 28 17 15 4 18 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 861.4 863.4 863.7 ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 868.0 872.5 870.6 ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 10 21 9 ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** 847.0 855.0 855.8 ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 30 1 15 ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** 1011.0 1013.2 1013.6 ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1018.5 1023.6 1021.5 ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 10 21 9 ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** 994.6 1003.7 1004.6 ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 30 1 15 ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** 1009.5 1009.5 1007.4 ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1019.9 1023.8 1016.4 ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 10 21 9 ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** 991.4 997.5 996.6 ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 30 15 15 ** ** ** ** ** ** 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 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1982 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.9 -3.6 3.2 14.5 15.3 18.7 21.9 18.6 16.5 9.8 0.9 -3.9 9.2 MINIMUN AIR TEMPERATURE (C) -7.2 -8.8 -2.7 6.6 9.4 11.1 13.7 11.8 10.9 4.9 -3.2 -8.4 3.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 23 25 10 0 0 0 0 0 0 0 10 29 97 DAYS WITH FREEZING MIN.<= 0 28 28 25 1 0 0 0 0 0 0 26 31 139 TEMPERATURE RECORDS LOWEST(C) -18.5 -19.0 -12.0 -1.5 4.0 8.0 10.0 8.0 7.0 1.0 -13.0 -17.5 -19.0 DAY 18 18 28 3 25 29 6 12 25 6 17 9 MAXIMUM AIR TEMPERATURE (C) 3.6 1.2 8.4 20.7 20.3 24.4 27.8 23.5 21.7 14.2 4.3 0.7 14.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 3 10 0 0 0 0 0 13 DAYS WITH MAXIMUM TEMP. <= 0 10 14 3 0 0 0 0 0 0 0 9 12 48 TEMPERATURE RECORDS HIGHEST(C) 15.5 8.5 17.0 29.0 28.5 31.2 35.5 29.6 27.0 24.0 16.0 6.0 35.5 DAY 4 28 17 30 31 8 10 28 8 18 5 22 DIF. BETWEEN (MAX.-MIN.) (C) 10.8 10.0 11.1 14.1 10.9 13.3 14.1 11.7 10.8 9.3 7.5 9.1 11.0 MEAN DAILY TEMP. (MDT) (C) -1.8 -3.8 2.9 13.6 14.8 17.7 20.8 17.7 16.3 9.6 0.5 -3.9 8.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.6 26.1 0.4 0.0 0.0 0.0 0.0 27.1 HEATING DEG. DAYS(BASE 18 0C) 613.8 610.2 469.3 132.5 107.3 26.5 1.8 30.8 54.1 261.6 523.7 653.2 3484.8 DEWPOINT (MEAN C) -8.8 -9.6 -5.0 3.1 7.1 9.5 12.2 10.7 10.2 4.3 -4.0 -9.9 1.7 MIXING RATIO (G/KG) 2.45 2.26 3.19 5.73 7.44 8.75 10.52 9.51 9.18 6.11 3.38 2.18 5.89 VAPOUR PRESSURE (HPA) 3.39 3.11 4.39 7.87 10.24 11.97 14.32 13.00 12.60 8.42 4.70 3.02 8.09 SATURATION DEF. (HPA) 2.56 1.84 3.88 10.00 8.10 10.59 13.15 9.52 6.77 4.64 2.26 1.77 6.26 RELATIVE HUMIDITY (MEAN %) 62 65 59 51 62 59 57 62 69 72 73 65 63 RELATIVE HUMIDITY (MAX. %) 75 80 77 72 83 82 80 81 87 87 85 73 80 RELATIVE HUMIDITY (MIN. %) 48 51 44 37 46 41 41 49 49 58 62 55 48 RELATIVE HUMIDITY (MEAN% 03UTC) 73 74 74 70 81 82 79 81 86 84 82 68 78 RELATIVE HUMIDITY (MEAN% 09UTC) 52 56 51 43 50 45 43 50 51 62 66 60 52 RELATIVE HUMIDITY (MEAN% 15UTC) 62 68 56 47 63 62 59 63 77 75 76 69 65 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 43.5 20.8 42.5 26.3 61.9 22.0 4.2 4.4 16.9 158.9 114.7 18.0 534.1 DAYS WITH PRECIPITATION >=10 2 0 2 1 1 1 0 0 0 4 5 0 16 DAYS WITH PRECIPITATION >= 5 5 0 3 3 5 1 0 0 0 8 6 2 33 DAYS WITH PRECIPITATION >= 1 6 9 6 4 13 5 1 1 5 12 10 4 76 DAYS WITH PRECIPITATION 7 10 7 5 16 5 4 3 9 12 11 4 93 GREATEST DAILY PRECIPITATION 12.0 4.5 16.0 11.0 18.0 10.0 3.0 4.0 4.0 55.0 32.0 6.0 55.0 DAY 15 14 24 8 11 24 26 17 14 7 8 5 DAY WITH THUNDER STORM 0 0 0 0 1 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 5 10 5 1 0 0 0 0 0 3 9 4 37 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 225 225 225 225 90 90 90 45 45 45 45 225 90 PREVAILING WIND SPEED(KNOTS) 17.2 12.8 13.9 12.8 11.3 10.0 11.0 11.7 9.9 9.7 8.6 16.4 10.6 PREVAILING WIND PERCENT 11.6 15.0 20.0 16.0 12.3 29.3 38.1 31.8 26.0 12.3 8.7 25.5 12.5 CALMS PERCENT OF WIND 80.6 72.1 58.7 61.3 65.2 48.0 52.3 46.6 57.3 71.6 77.3 62.8 62.8 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 148 150 155 150 145 1808 VECTOR WIND DIRECTION (MEAN) 221 197 211 212 143 90 86 68 70 86 120 227 125 VECTOR WIND MAGNITUDE(KNOTS) 1.9 1.6 2.7 2.4 1.1 3.6 4.9 5.4 3.9 1.1 0.7 4.9 1.2 WIND STEADINESES (MEAN %) 61.3 55.2 50.0 50.0 26.8 65.5 94.2 93.1 92.9 36.7 31.8 83.1 27.9 WIND SPEED (MEAN KNOTS) 3.1 2.9 5.4 4.8 4.1 5.5 5.2 5.8 4.2 3.0 2.2 5.9 4.3 FASTEST WIND DIRECTION 240 240 210 240 270 270 90 60 90 210 180 190 190 FASTEST WIND SPEED (KNOTS) 35 19 29 19 29 19 19 19 16 19 16 41 41 DAY 9 2 10 1 19 1 21 22 5 5 4 31 DAYS WITH SKY CLEAR (0-2)/8 11 13 9 4 4 15 18 15 5 10 11 21 136 DAYS WITH P.CLOUDY (3-6)/8 16 3 11 20 15 11 11 8 20 4 5 6 130 DAYS WITH CLOUDY (7-8)/8 4 12 11 6 12 4 2 8 5 17 14 4 99 DAYS WITH VISIBILITY =< 2 KM 2 0 4 4 4 0 0 0 1 1 7 3 26 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1982 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 863.3 862.1 861.4 862.5 866.3 863.5 860.9 863.1 867.0 867.1 869.0 866.0 864.4 MAX. QFE PRESSURE IN HPA 873.5 872.4 870.1 871.5 875.9 868.0 869.0 868.6 872.0 877.7 874.0 875.0 877.7 DAY-HOUR 21- 6 11- 9 5- 6 4- 6 11- 9 6- 6 20- 6 15- 6 20- 3 25- 6 11- 3 10- 9 MIN. QFE PRESSURE IN HPA 851.0 852.0 852.0 853.3 859.3 858.0 854.0 857.0 860.8 858.6 858.5 855.2 851.0 DAY-HOUR 9- 3 4- 3 19- 3 18-15 14-15 11-15 31-12 1- 9 23-12 5- 3 6-12 31-12 MEAN QNH PRESSURE IN HPA 1013.1 1011.8 1011.0 1012.2 1016.6 1013.4 1010.4 1012.9 1017.4 1017.5 1019.6 1016.3 1014.3 MAX. QNH PRESSURE IN HPA 1024.8 1023.5 1020.9 1022.5 1027.5 1018.5 1019.6 1019.2 1023.1 1029.6 1025.3 1026.5 1029.6 DAY-HOUR 21- 6 11- 9 5- 6 4- 6 11- 9 6- 6 20- 6 15- 6 20- 3 25- 6 11- 3 10- 9 MIN. QNH PRESSURE IN HPA 999.1 1000.3 1000.3 1001.8 1008.6 1007.1 1002.6 1006.0 1010.3 1007.8 1007.7 1003.9 999.1 DAY-HOUR 9- 3 4- 3 19- 3 18-15 14-15 11-15 31-12 1- 9 23-12 5- 3 6-12 31-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 863.3 861.9 861.6 862.8 866.7 864.1 861.8 863.6 867.5 867.0 868.9 865.8 864.6 MAX. QFE PRESSURE IN HPA 872.7 872.0 868.7 870.7 875.2 868.0 868.0 868.0 872.0 877.4 874.0 873.0 877.4 DAY 21 11 5 4 10 13 20 15 20 25 11 10 MIN. QFE PRESSURE IN HPA 851.0 852.0 852.0 855.9 859.7 859.7 856.5 857.4 863.0 858.6 859.6 858.3 851.0 DAY 9 4 19 27 15 1 31 1 23 5 8 28 MEAN QNH PRESSURE IN HPA 1013.2 1011.5 1011.2 1012.6 1017.0 1014.1 1011.4 1013.5 1017.9 1017.3 1019.6 1016.0 1014.6 MAX. QNH PRESSURE IN HPA 1023.9 1023.1 1019.3 1021.6 1026.7 1018.5 1018.5 1018.5 1023.1 1029.2 1025.3 1024.2 1029.2 DAY 21 11 5 4 10 13 20 15 20 25 11 10 MIN. QNH PRESSURE IN HPA 999.1 1000.3 1000.3 1004.7 1009.1 1009.1 1005.4 1006.4 1012.8 1007.8 1008.9 1007.5 999.1 DAY 9 4 19 27 15 1 31 1 23 5 8 28 MEAN QFF PRESSURE IN HPA 1019.4 1018.7 1014.4 1009.6 1013.2 1008.7 1004.3 1007.9 1013.4 1016.2 1023.9 1024.4 1014.5 MAX. QFF PRESSURE IN HPA 1036.5 1031.3 1022.5 1022.7 1025.0 1013.8 1012.1 1013.6 1019.8 1030.8 1032.7 1037.3 1037.3 DAY 21 11 29 4 10 13 8 15 20 25 17 10 MIN. QFF PRESSURE IN HPA 998.8 1001.9 1000.9 997.1 1002.5 1002.4 999.2 999.8 1008.1 1001.8 1009.0 1013.5 997.1 DAY 9 4 19 27 15 1 15 1 23 5 6 31 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1982 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 864.4 862.8 862.3 863.4 867.0 864.3 861.9 864.0 868.0 867.9 869.7 866.4 865.2 MAX. QFE PRESSURE IN HPA 873.5 872.3 870.1 871.5 875.8 868.0 869.0 868.6 872.0 877.7 874.0 873.8 877.7 DAY 21 11 5 4 10 6 20 15 20 25 11 10 MIN. QFE PRESSURE IN HPA 851.9 852.0 852.9 856.3 860.3 860.3 856.8 857.7 863.7 859.4 860.1 858.5 851.9 DAY 9 4 19 27 15 1 31 1 23 5 8 28 MEAN QNH PRESSURE IN HPA 1014.4 1012.6 1012.0 1013.3 1017.4 1014.3 1011.6 1013.9 1018.5 1018.4 1020.4 1016.7 1015.3 MAX. QNH PRESSURE IN HPA 1024.8 1023.4 1020.9 1022.5 1027.4 1018.5 1019.6 1019.2 1023.1 1029.6 1025.3 1025.1 1029.6 DAY 21 11 5 4 10 6 20 15 20 25 11 10 MIN. QNH PRESSURE IN HPA 1000.2 1000.3 1001.3 1005.2 1009.7 1009.7 1005.8 1006.8 1013.6 1008.7 1009.5 1007.7 1000.2 DAY 9 4 19 27 15 1 31 1 23 5 8 28 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 863.7 862.5 861.8 862.8 866.5 863.7 861.1 863.2 867.1 867.3 869.2 866.2 864.6 MAX. QFE PRESSURE IN HPA 872.9 872.4 869.6 870.5 875.9 867.7 868.2 868.4 872.0 876.9 873.6 875.0 876.9 DAY 21 11 5 4 11 6 20 15 20 25 11 10 MIN. QFE PRESSURE IN HPA 851.4 852.0 853.2 855.5 860.5 860.2 855.2 857.0 862.7 859.4 860.1 857.5 851.4 DAY 9 4 2 18 15 26 31 1 23 5 6 31 MEAN QNH PRESSURE IN HPA 1013.6 1012.2 1011.4 1012.6 1016.8 1013.6 1010.7 1013.0 1017.5 1017.7 1019.9 1016.4 1014.6 MAX. QNH PRESSURE IN HPA 1024.1 1023.5 1020.3 1021.4 1027.5 1018.2 1018.7 1019.0 1023.1 1028.6 1024.9 1026.5 1028.6 DAY 21 11 5 4 11 6 20 15 20 25 11 10 MIN. QNH PRESSURE IN HPA 999.6 1000.3 1001.7 1004.3 1010.0 1009.6 1003.9 1006.0 1012.5 1008.7 1009.5 1006.6 999.6 DAY 9 4 2 18 15 26 31 1 23 5 6 31 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 862.2 861.6 860.7 861.7 865.9 862.7 859.9 862.4 866.2 866.5 868.4 865.7 863.7 MAX. QFE PRESSURE IN HPA 871.6 870.8 868.0 868.1 875.4 867.7 866.8 867.5 871.1 876.2 872.9 872.0 876.2 DAY 20 11 5 14 10 6 20 14 20 24 11 10 MIN. QFE PRESSURE IN HPA 851.6 852.2 852.2 853.5 859.8 858.4 854.0 857.2 860.8 859.0 858.5 855.2 851.6 DAY 9 4 2 18 31 11 31 1 23 18 6 31 MEAN QNH PRESSURE IN HPA 1012.0 1011.2 1010.1 1011.3 1016.1 1012.5 1009.3 1012.1 1016.4 1016.8 1018.9 1015.9 1013.6 MAX. QNH PRESSURE IN HPA 1022.6 1021.7 1018.5 1018.6 1026.9 1018.2 1017.1 1017.9 1022.0 1027.8 1024.1 1023.1 1027.8 DAY 20 11 5 14 10 6 20 14 20 24 11 10 MIN. QNH PRESSURE IN HPA 999.8 1000.5 1000.5 1002.0 1009.2 1007.6 1002.6 1006.2 1010.3 1008.3 1007.7 1003.9 999.8 DAY 9 4 2 18 31 11 31 1 23 18 6 31 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1982 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 862.8 862.0 860.7 861.7 865.6 862.8 859.8 862.4 866.4 866.9 868.8 866.2 863.8 MAX. QFE PRESSURE IN HPA 872.2 870.6 868.0 868.3 874.8 867.7 866.2 867.4 871.2 877.0 873.1 873.0 877.0 DAY 20 11 5 3 10 6 20 15 19 24 18 9 MIN. QFE PRESSURE IN HPA 852.0 852.6 852.8 853.3 859.3 858.0 854.0 857.8 861.0 860.0 859.0 856.8 852.0 DAY 8 4 18 18 14 11 31 1 23 18 6 31 MEAN QNH PRESSURE IN HPA 1012.6 1011.7 1010.2 1011.4 1015.7 1012.6 1009.2 1012.2 1016.7 1017.2 1019.4 1016.4 1013.8 MAX. QNH PRESSURE IN HPA 1023.3 1021.5 1018.5 1018.8 1026.2 1018.2 1016.5 1017.8 1022.2 1028.8 1024.3 1024.2 1028.8 DAY 20 11 5 3 10 6 20 15 19 24 18 9 MIN. QNH PRESSURE IN HPA 1000.3 1001.0 1001.2 1001.8 1008.6 1007.1 1002.6 1006.9 1010.5 1009.4 1008.3 1005.8 1000.3 DAY 8 4 18 18 14 11 31 1 23 18 6 31 MEAN QFF PRESSURE IN HPA 1018.7 1018.8 1013.2 1008.1 1011.9 1007.1 1001.9 1006.3 1012.1 1016.2 1023.8 1023.9 1013.5 MAX. QFF PRESSURE IN HPA 1035.7 1030.5 1022.1 1020.5 1024.3 1013.2 1009.8 1013.2 1018.6 1030.0 1032.1 1037.6 1037.6 DAY 21 10 5 3 10 6 7 15 19 24 30 9 MIN. QFF PRESSURE IN HPA 1000.5 1003.9 1000.4 995.6 1002.0 999.4 996.2 1000.5 1005.6 1004.0 1006.3 1010.1 995.6 DAY 8 4 18 18 14 11 31 1 23 18 6 31 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -5.4 -0.4 2.7 10.5 15.3 17.1 21.8 18.6 14.1 11.5 8.0 0.2 9.5 MINIMUN AIR TEMPERATURE (C) -10.5 -5.6 -3.8 1.9 8.5 10.0 12.6 12.4 7.8 4.2 2.8 -5.5 2.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 27 23 15 1 0 0 0 0 0 1 3 19 89 DAYS WITH FREEZING MIN.<= 0 31 28 29 9 0 0 0 0 1 7 7 25 137 TEMPERATURE RECORDS LOWEST(C) -25.0 -11.0 -14.0 -6.5 5.0 6.0 8.0 6.0 0.0 -4.0 -8.0 -14.0 -25.0 DAY 27 23 7 1 1 29 1 27 28 20 27 24 MAXIMUM AIR TEMPERATURE (C) -0.9 4.4 7.1 16.0 20.2 21.9 27.3 23.4 19.6 18.2 14.6 6.1 14.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 6 3 0 0 0 0 9 DAYS WITH MAXIMUM TEMP. <= 0 19 1 6 0 0 0 0 0 0 0 0 5 31 TEMPERATURE RECORDS HIGHEST(C) 6.5 7.5 18.0 24.0 25.0 29.0 35.0 32.6 26.5 29.4 20.0 14.5 35.0 DAY 22 14 27 16 28 15 14 15 25 2 9 1 DIF. BETWEEN (MAX.-MIN.) (C) 9.6 10.0 10.9 14.1 11.7 11.9 14.7 11.0 11.8 14.0 11.8 11.6 11.9 MEAN DAILY TEMP. (MDT) (C) -5.7 -0.6 1.6 9.0 14.4 15.9 19.9 17.9 13.7 11.2 8.7 0.3 8.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.0 15.3 8.8 0.0 0.0 0.0 0.0 24.0 HEATING DEG. DAYS(BASE 18 0C) 712.1 520.6 507.4 270.0 112.1 71.4 3.3 43.8 128.1 210.4 279.6 534.1 3392.9 DEWPOINT (MEAN C) -11.0 -7.6 -4.0 1.1 8.0 12.1 13.8 12.1 8.8 2.1 -0.1 ***** ***** MIXING RATIO (G/KG) 2.07 2.61 3.40 4.95 8.00 10.45 11.69 10.49 8.36 5.31 4.49 ****** ****** VAPOUR PRESSURE (HPA) 2.85 3.60 4.69 6.80 10.95 14.26 15.87 14.28 11.46 7.33 6.20 ****** ****** SATURATION DEF. (HPA) 1.54 2.50 3.31 6.74 6.98 5.93 11.37 8.13 5.30 7.24 5.18 ****** ****** RELATIVE HUMIDITY (MEAN %) 66 61 65 57 65 74 63 68 73 59 61 *** *** RELATIVE HUMIDITY (MAX. %) 73 74 80 78 83 92 88 86 93 82 78 *** *** RELATIVE HUMIDITY (MIN. %) 57 47 52 40 50 61 47 53 55 40 42 *** *** RELATIVE HUMIDITY (MEAN% 03UTC) 69 71 80 77 83 92 88 86 92 75 71 *** *** RELATIVE HUMIDITY (MEAN% 09UTC) 64 57 58 44 54 63 50 55 60 45 49 *** *** RELATIVE HUMIDITY (MEAN% 15UTC) 70 57 61 54 64 75 63 71 76 64 59 *** *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 10.5 0.0 9.2 44.6 85.0 31.2 0.0 0.7 19.8 2.0 32.5 13.3 248.8 DAYS WITH PRECIPITATION >=10 0 0 0 1 2 1 0 0 0 0 1 0 5 DAYS WITH PRECIPITATION >= 5 1 0 0 3 5 1 0 0 2 0 4 0 16 DAYS WITH PRECIPITATION >= 1 3 0 5 6 15 6 0 0 4 1 4 5 49 DAYS WITH PRECIPITATION 3 0 6 8 17 8 0 2 6 2 5 7 64 GREATEST DAILY PRECIPITATION 8.0 0.0 3.0 18.0 21.0 22.0 0.0 0.4 8.0 2.0 14.0 4.0 22.0 DAY 9 ** 6 28 24 5 ** 29 14 6 25 3 DAY WITH THUNDER STORM 0 0 0 0 2 0 0 0 0 0 0 0 2 DAYS WITH SNOW OR SLEET 5 0 3 1 0 0 0 0 0 0 4 4 17 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 225 225 225 45 45 45 45 45 45 45 180 225 45 PREVAILING WIND SPEED(KNOTS) 24.7 23.9 23.9 16.6 13.5 13.8 14.0 14.8 12.5 11.4 18.1 13.4 13.7 PREVAILING WIND PERCENT 38.2 39.0 12.5 22.7 10.3 46.3 52.3 58.7 47.3 28.1 29.2 14.0 23.2 CALMS PERCENT OF WIND 45.8 42.6 37.5 48.7 52.3 46.3 39.4 38.1 46.7 51.7 34.6 54.3 44.6 NO. OF WIND OBSERVATION 144 136 152 150 155 147 155 155 150 178 240 186 1948 VECTOR WIND DIRECTION (MEAN) 217 224 289 66 211 41 40 40 45 83 197 181 167 VECTOR WIND MAGNITUDE(KNOTS) 11.3 11.7 1.5 1.2 2.2 6.5 7.8 9.0 5.7 1.3 8.6 1.6 0.5 WIND STEADINESES (MEAN %) 89.7 90.0 10.7 13.8 25.9 92.9 94.0 98.9 83.8 21.0 75.4 29.6 5.4 WIND SPEED (MEAN KNOTS) 12.6 13.0 14.0 8.7 8.5 7.0 8.3 9.1 6.8 6.2 11.4 5.4 9.3 FASTEST WIND DIRECTION 210 240 250 240 230 40 40 40 220 210 190 300 240 FASTEST WIND SPEED (KNOTS) 51 68 51 41 51 21 25 25 41 29 41 39 68 DAY 22 28 8 18 4 28 27 16 25 4 17 28 DAYS WITH SKY CLEAR (0-2)/8 16 16 17 9 4 12 20 10 13 16 5 12 150 DAYS WITH P.CLOUDY (3-6)/8 9 11 6 15 17 13 8 14 11 6 19 10 139 DAYS WITH CLOUDY (7-8)/8 6 1 8 6 10 5 3 7 6 9 6 7 74 DAYS WITH VISIBILITY =< 2 KM 6 1 4 3 1 3 2 3 10 5 6 7 51 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 862.6 861.0 862.1 862.3 861.9 862.9 860.3 861.4 864.0 866.3 865.5 ****** ****** MAX. QFE PRESSURE IN HPA 874.7 869.3 869.7 870.1 869.8 867.9 868.0 867.4 870.1 873.0 879.1 ****** ****** DAY-HOUR 7-15 11- 6 14-15 29- 6 18-12 5- 3 1- 3 17- 6 1- 6 28- 6 25-18 **-** MIN. QFE PRESSURE IN HPA 849.2 851.0 848.7 855.1 853.2 857.3 852.0 855.4 858.0 856.7 855.0 ****** ****** DAY-HOUR 24- 3 17-12 5-12 2-15 4-12 7-12 27-12 11-12 25-15 4-12 12-12 **-** MEAN QNH PRESSURE IN HPA 1012.3 1010.5 1011.8 1012.0 1011.5 1012.7 1009.7 1011.0 1013.9 1016.6 1015.7 ****** ****** MAX. QNH PRESSURE IN HPA 1026.1 1020.0 1020.4 1020.9 1020.6 1018.4 1018.5 1017.8 1020.9 1024.2 1031.1 ****** ****** DAY-HOUR 7-15 11- 6 14-15 29- 6 18-12 5- 3 1- 3 17- 6 1- 6 28- 6 25-18 **-** MIN. QNH PRESSURE IN HPA 997.1 999.1 996.5 1003.8 1001.7 1006.3 1000.3 1004.2 1007.1 1005.6 1003.7 ****** ****** DAY-HOUR 24- 3 17-12 5-12 2-15 4-12 7-12 27-12 11-12 25-15 4-12 12-12 **-** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1014.6 ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1036.9 ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 25-18 **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 999.5 ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 12-21 **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 865.7 ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 877.6 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 26 ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 856.9 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 13 ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1015.9 ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1029.4 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 26 ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1005.9 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 13 ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1014.4 ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1036.5 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 26 ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1001.6 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 13 ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 862.2 861.1 862.5 862.6 862.2 863.5 861.1 862.1 864.6 866.6 865.6 ****** ****** MAX. QFE PRESSURE IN HPA 872.0 868.7 868.2 869.8 868.1 867.9 868.0 867.0 869.3 871.9 877.0 ****** ****** DAY 7 12 15 29 16 5 1 17 1 28 26 ** MIN. QFE PRESSURE IN HPA 849.2 851.0 851.5 856.5 855.0 858.9 852.7 857.8 860.3 859.3 857.7 ****** ****** DAY 24 18 5 3 4 7 28 12 8 14 13 ** MEAN QNH PRESSURE IN HPA 1011.9 1010.7 1012.3 1012.4 1011.9 1013.4 1010.7 1011.8 1014.6 1016.9 1015.8 ****** ****** MAX. QNH PRESSURE IN HPA 1023.1 1019.3 1018.7 1020.6 1018.6 1018.4 1018.5 1017.4 1020.0 1022.9 1028.8 ****** ****** DAY 7 12 15 29 16 5 1 17 1 28 26 ** MIN. QNH PRESSURE IN HPA 997.1 999.1 999.7 1005.4 1003.7 1008.1 1001.1 1006.9 1009.7 1008.6 1006.8 ****** ****** DAY 24 18 5 3 4 7 28 12 8 14 13 ** MEAN QFF PRESSURE IN HPA 1020.6 1015.7 1015.9 1011.8 1007.7 1008.2 1003.3 1005.8 1011.3 1015.7 1015.4 ****** ****** MAX. QFF PRESSURE IN HPA 1036.0 1026.3 1025.3 1021.1 1015.6 1014.4 1013.6 1013.4 1019.9 1023.9 1036.3 ****** ****** DAY 7 12 15 29 16 1 1 31 28 7 26 ** MIN. QFF PRESSURE IN HPA 999.5 1002.5 1000.8 1002.0 998.1 1000.8 994.0 998.8 1004.6 1005.1 1003.3 ****** ****** DAY 24 18 5 18 4 7 28 12 8 14 13 ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 863.1 861.7 862.9 863.1 862.5 863.6 861.2 862.2 864.9 867.2 866.3 ****** ****** MAX. QFE PRESSURE IN HPA 874.7 869.3 869.5 870.1 869.2 867.9 867.8 867.4 870.1 873.0 877.0 ****** ****** DAY 8 11 14 29 18 5 1 17 1 28 26 ** MIN. QFE PRESSURE IN HPA 850.2 852.2 851.4 857.8 855.0 858.7 853.4 857.9 860.8 859.5 857.5 ****** ****** DAY 24 17 5 3 4 7 27 11 8 4 12 ** MEAN QNH PRESSURE IN HPA 1012.9 1011.3 1012.6 1012.9 1012.3 1013.5 1010.7 1011.9 1015.0 1017.6 1016.6 ****** ****** MAX. QNH PRESSURE IN HPA 1026.1 1020.0 1020.2 1020.9 1019.9 1018.4 1018.3 1017.8 1020.9 1024.2 1028.8 ****** ****** DAY 8 11 14 29 18 5 1 17 1 28 26 ** MIN. QNH PRESSURE IN HPA 998.2 1000.5 999.6 1006.9 1003.7 1007.9 1001.9 1007.0 1010.3 1008.8 1006.6 ****** ****** DAY 24 17 5 3 4 7 27 11 8 4 12 ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1015.9 ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1035.0 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 26 ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1004.9 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 12 ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 862.8 861.3 862.3 862.4 862.0 863.0 860.4 861.5 864.2 866.2 865.5 ****** ****** MAX. QFE PRESSURE IN HPA 874.3 869.2 869.5 869.6 869.0 867.3 867.1 867.1 870.0 872.2 875.2 ****** ****** DAY 7 11 14 29 18 5 1 17 1 28 26 ** MIN. QFE PRESSURE IN HPA 850.5 852.2 850.2 857.1 854.6 857.9 852.4 856.0 859.5 857.1 856.6 ****** ****** DAY 24 17 5 3 4 7 27 28 25 4 12 ** MEAN QNH PRESSURE IN HPA 1012.6 1010.9 1012.0 1012.2 1011.6 1012.8 1009.8 1011.1 1014.1 1016.4 1015.7 ****** ****** MAX. QNH PRESSURE IN HPA 1025.7 1019.9 1020.2 1020.3 1019.6 1017.7 1017.5 1017.5 1020.8 1023.3 1026.7 ****** ****** DAY 7 11 14 29 18 5 1 17 1 28 26 ** MIN. QNH PRESSURE IN HPA 998.6 1000.5 998.2 1006.1 1003.2 1007.0 1000.7 1004.8 1008.8 1006.1 1005.5 ****** ****** DAY 24 17 5 3 4 7 27 28 25 4 12 ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1013.9 ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1032.6 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 26 ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1002.6 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 12 ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 862.2 860.3 861.4 861.6 861.4 862.2 859.5 860.6 863.1 865.1 864.5 ****** ****** MAX. QFE PRESSURE IN HPA 873.7 868.3 869.5 868.5 869.8 866.2 866.5 866.0 868.6 871.3 874.4 ****** ****** DAY 7 11 14 29 18 5 1 17 1 28 25 ** MIN. QFE PRESSURE IN HPA 849.2 851.0 848.7 855.4 853.2 857.3 852.0 855.4 858.6 856.7 855.0 ****** ****** DAY 24 17 5 2 4 7 27 11 25 4 12 ** MEAN QNH PRESSURE IN HPA 1011.9 1009.7 1010.9 1011.2 1011.0 1012.0 1008.8 1010.1 1012.9 1015.2 1014.5 ****** ****** MAX. QNH PRESSURE IN HPA 1025.0 1018.8 1020.2 1019.1 1020.6 1016.5 1016.8 1016.2 1019.2 1022.3 1025.8 ****** ****** DAY 7 11 14 29 18 5 1 17 1 28 25 ** MIN. QNH PRESSURE IN HPA 997.1 999.1 996.5 1004.2 1001.7 1006.3 1000.3 1004.2 1007.8 1005.6 1003.7 ****** ****** DAY 24 17 5 2 4 7 27 11 25 4 12 ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1012.8 ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1030.8 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 26 ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1001.0 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 12 ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 862.7 860.6 861.4 861.6 861.4 862.2 859.2 860.6 863.3 865.6 865.0 ****** ****** MAX. QFE PRESSURE IN HPA 874.7 868.7 869.7 868.2 868.9 866.4 865.7 866.5 869.0 871.7 877.4 ****** ****** DAY 7 11 14 29 18 4 1 17 14 28 25 ** MIN. QFE PRESSURE IN HPA 849.5 851.0 850.0 855.1 853.4 857.3 852.6 856.1 858.0 858.2 855.5 ****** ****** DAY 24 17 5 2 4 7 27 11 25 13 12 ** MEAN QNH PRESSURE IN HPA 1012.5 1010.1 1011.0 1011.2 1011.0 1011.9 1008.5 1010.1 1013.2 1015.7 1015.1 ****** ****** MAX. QNH PRESSURE IN HPA 1026.1 1019.3 1020.4 1018.7 1019.5 1016.7 1015.9 1016.8 1019.6 1022.7 1029.2 ****** ****** DAY 7 11 14 29 18 4 1 17 14 28 25 ** MIN. QNH PRESSURE IN HPA 997.4 999.1 998.0 1003.8 1001.9 1006.3 1001.0 1005.0 1007.1 1007.4 1004.3 ****** ****** DAY 24 17 5 2 4 7 27 11 25 13 12 ** MEAN QFF PRESSURE IN HPA 1020.3 1015.0 1014.8 1010.4 1006.8 1006.5 1001.0 1004.0 1009.8 1014.3 1014.7 ****** ****** MAX. QFF PRESSURE IN HPA 1040.2 1025.6 1026.6 1017.9 1016.4 1012.2 1010.3 1013.8 1018.5 1020.9 1034.4 ****** ****** DAY 7 11 14 28 18 4 1 31 14 19 25 ** MIN. QFF PRESSURE IN HPA 1000.4 1002.9 1001.6 1001.3 996.2 998.4 993.8 997.1 1001.6 1004.5 1001.3 ****** ****** DAY 24 18 5 17 4 7 26 11 25 4 12 ** PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 865.8 ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 879.1 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 25 ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 855.6 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 12 ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1016.0 ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1031.1 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 25 ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1004.4 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 12 ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1015.3 ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1036.9 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 25 ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1000.5 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 12 ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 865.7 ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 878.0 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 25 ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 855.1 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 12 ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1015.9 ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1029.9 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 25 ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1003.8 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 12 ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1014.2 ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1036.2 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 25 ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 999.5 ****** ****** DAY ** ** ** ** ** ** ** ** ** ** 12 ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.8 -5.5 2.8 10.4 9.7 14.3 19.0 16.0 13.8 8.4 5.0 -7.0 7.2 MINIMUN AIR TEMPERATURE (C) -7.5 -10.6 -1.4 2.6 3.3 7.9 11.0 10.6 6.8 2.7 1.6 -10.9 1.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 23 27 3 2 1 0 0 0 0 5 2 26 89 DAYS WITH FREEZING MIN.<= 0 31 28 29 10 3 0 0 0 0 9 12 28 150 TEMPERATURE RECORDS LOWEST(C) -25.0 -31.4 -5.0 -4.0 -5.0 3.2 3.5 4.5 0.6 -21.0 -4.5 -23.0 -31.4 DAY 31 1 1 1 2 16 9 26 23 21 27 30 MAXIMUM AIR TEMPERATURE (C) 6.8 -1.0 8.5 17.7 15.7 20.1 25.4 21.5 20.8 15.0 10.4 -2.3 13.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 2 2 1 0 0 0 0 5 DAYS WITH MAXIMUM TEMP. <= 0 2 22 0 0 0 0 0 0 0 0 1 22 47 TEMPERATURE RECORDS HIGHEST(C) 14.0 13.0 16.5 23.0 27.5 32.5 30.0 33.0 28.2 25.4 17.0 4.2 33.0 DAY 5 12 8 8 27 10 21 28 24 14 28 14 DIF. BETWEEN (MAX.-MIN.) (C) 14.3 9.6 9.9 15.1 12.4 12.2 14.4 10.9 14.0 12.3 8.8 8.6 11.9 MEAN DAILY TEMP. (MDT) (C) -0.4 -5.8 3.6 10.2 9.5 14.0 18.2 16.1 13.8 8.8 6.0 -6.6 7.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 HEATING DEG. DAYS(BASE 18 0C) 525.3 690.5 447.8 235.1 264.2 126.6 15.4 64.0 119.7 264.2 324.8 665.4 3743.2 DEWPOINT (MEAN C) ***** -8.2 -1.0 1.2 4.5 8.4 10.7 10.5 9.1 5.1 2.5 -8.7 ***** MIXING RATIO (G/KG) ****** 2.57 4.14 4.92 6.24 8.19 9.65 9.45 8.57 6.72 5.38 2.45 ****** VAPOUR PRESSURE (HPA) ****** 3.59 5.74 6.79 8.63 11.28 13.23 12.96 11.84 9.32 7.46 3.42 ****** SATURATION DEF. (HPA) ****** 0.92 2.11 6.71 4.23 5.97 9.76 5.81 4.64 2.74 1.66 0.47 ****** RELATIVE HUMIDITY (MEAN %) *** 83 79 58 74 72 62 73 77 84 86 88 *** RELATIVE HUMIDITY (MAX. %) *** 91 93 82 94 94 84 89 94 97 97 93 *** RELATIVE HUMIDITY (MIN. %) *** 75 60 34 52 49 45 54 52 63 69 80 *** RELATIVE HUMIDITY (MEAN% 03UTC) *** 86 89 78 92 88 81 85 89 91 94 88 *** RELATIVE HUMIDITY (MEAN% 09UTC) *** 80 68 37 55 54 48 58 53 68 75 87 *** RELATIVE HUMIDITY (MEAN% 15UTC) *** 83 76 56 67 64 55 70 77 85 82 88 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 25.5 19.6 22.2 17.1 59.1 2.6 1.7 1.0 7.4 30.2 31.0 16.2 233.6 DAYS WITH PRECIPITATION >=10 1 0 0 0 2 0 0 0 0 1 1 0 5 DAYS WITH PRECIPITATION >= 5 1 1 1 1 6 0 0 0 1 2 2 1 16 DAYS WITH PRECIPITATION >= 1 3 5 8 4 8 1 1 0 3 6 7 4 50 DAYS WITH PRECIPITATION 5 12 11 13 17 4 2 2 5 8 12 9 100 GREATEST DAILY PRECIPITATION 22.0 6.0 5.3 7.0 15.0 2.0 1.0 0.6 5.0 11.6 10.0 6.0 22.0 DAY 29 13 18 16 5 7 26 29 8 18 29 7 DAY WITH THUNDER STORM 0 1 0 2 2 1 1 1 1 1 0 0 10 DAYS WITH SNOW OR SLEET 5 13 4 0 2 0 0 0 0 2 4 11 41 DAYS WITH DUST 1 0 0 0 0 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 90 90 90 225 90 90 90 90 90 90 90 225 90 PREVAILING WIND SPEED(KNOTS) 13.0 13.8 12.6 16.4 12.7 16.7 19.0 16.4 13.7 16.0 11.2 16.1 15.2 PREVAILING WIND PERCENT 16.3 22.5 32.0 26.9 33.5 56.3 62.5 66.9 47.9 32.8 19.5 11.6 35.6 CALMS PERCENT OF WIND 56.9 60.7 51.0 34.4 48.4 37.5 29.8 29.0 47.9 53.4 53.8 68.8 47.0 NO. OF WIND OBSERVATION 202 178 200 212 248 240 248 248 240 232 221 224 2693 VECTOR WIND DIRECTION (MEAN) 173 126 113 214 91 90 90 89 90 102 173 200 104 VECTOR WIND MAGNITUDE(KNOTS) 1.6 2.6 3.3 4.8 3.3 9.2 12.2 11.1 6.5 4.3 1.9 1.4 4.2 WIND STEADINESES (MEAN %) 29.6 51.0 53.2 50.0 53.2 92.9 97.6 98.2 97.0 59.7 33.9 37.8 56.0 WIND SPEED (MEAN KNOTS) 5.4 5.1 6.2 9.6 6.2 9.9 12.5 11.3 6.7 7.2 5.6 3.7 7.5 FASTEST WIND DIRECTION 220 210 230 250 240 90 90 90 90 250 210 210 210 FASTEST WIND SPEED (KNOTS) 29 29 35 35 31 29 37 29 29 29 37 58 58 DAY 1 8 24 9 27 15 13 1 14 16 25 13 DAYS WITH SKY CLEAR (0-2)/8 16 6 4 5 7 15 22 12 14 12 2 9 124 DAYS WITH P.CLOUDY (3-6)/8 7 11 10 19 12 10 7 10 10 8 14 7 125 DAYS WITH CLOUDY (7-8)/8 7 12 17 6 12 5 2 9 6 10 13 13 112 DAYS WITH VISIBILITY =< 2 KM 11 14 18 5 16 15 6 10 13 23 18 14 163 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** 183.2 209.6 143.8 96.6 71.8 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA ****** 872.3 867.1 865.9 868.4 868.4 867.0 866.9 871.7 873.5 871.0 874.3 ****** MAX. QFE PRESSURE IN HPA ****** 882.9 875.3 873.2 876.5 874.4 873.3 872.9 877.9 882.3 880.8 883.2 ****** DAY-HOUR **-** 18- 9 5- 6 4- 3 12-18 15-18 3- 6 30- 6 30- 6 21- 9 30-18 18- 6 MIN. QFE PRESSURE IN HPA ****** 855.7 858.0 858.4 860.0 859.6 862.0 860.0 865.3 860.8 860.8 861.7 ****** DAY-HOUR **-** 8- 9 14- 3 9-15 27-15 20-15 30-15 14-15 8-12 17- 9 12- 3 14- 3 MEAN QNH PRESSURE IN HPA ****** 1023.4 1017.5 1016.2 1018.9 1019.0 1017.4 1017.3 1022.7 1024.8 1021.9 1025.7 ****** MAX. QNH PRESSURE IN HPA ****** 1035.5 1026.8 1024.4 1028.2 1025.8 1024.5 1024.1 1029.8 1034.8 1033.1 1035.8 ****** DAY-HOUR **-** 18- 9 5- 6 4- 3 12-18 15-18 3- 6 30- 6 30- 6 21- 9 30-18 18- 6 MIN. QNH PRESSURE IN HPA ****** 1004.5 1007.1 1007.6 1009.4 1008.9 1011.7 1009.4 1015.4 1010.3 1010.3 1011.3 ****** DAY-HOUR **-** 8- 9 14- 3 9-15 27-15 20-15 30-15 14-15 8-12 17- 9 12- 3 14- 3 MEAN QFF PRESSURE IN HPA ****** 1029.5 1019.8 1013.8 1016.8 1014.1 1009.8 1011.3 1018.1 1023.2 1022.4 1034.2 ****** MAX. QFF PRESSURE IN HPA ****** 1043.7 1030.7 1026.7 1027.0 1025.1 1019.7 1021.2 1026.0 1045.2 1039.7 1043.6 ****** DAY-HOUR **-** 18- 3 5- 6 4- 3 12-21 15-21 3- 9 30-18 22- 3 21-18 30-18 10- 6 MIN. QFF PRESSURE IN HPA ****** 1008.4 1007.5 1002.3 1000.9 1004.3 1003.7 1002.7 1009.6 1003.5 1008.3 1014.3 ****** DAY-HOUR **-** 8- 9 25- 3 9-15 27-21 20-12 30-12 27-12 8-12 17- 9 12-12 14- 6 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** 870.5 866.4 865.8 868.1 868.6 867.3 867.1 871.7 873.4 871.0 874.7 ****** MAX. QFE PRESSURE IN HPA ****** 877.9 874.3 872.1 874.7 873.7 871.9 871.2 876.2 880.0 878.8 883.0 ****** DAY ** 6 5 14 13 16 3 30 22 8 27 19 MIN. QFE PRESSURE IN HPA ****** 856.5 858.0 860.5 860.9 861.2 864.5 861.4 866.8 861.3 861.6 862.2 ****** DAY ** 8 15 17 28 21 29 15 8 18 12 14 MEAN QNH PRESSURE IN HPA ****** 1021.4 1016.7 1016.0 1018.6 1019.2 1017.7 1017.5 1022.8 1024.7 1021.9 1026.2 ****** MAX. QNH PRESSURE IN HPA ****** 1029.8 1025.7 1023.2 1026.1 1025.0 1022.9 1022.2 1027.8 1032.2 1030.8 1035.6 ****** DAY ** 6 5 14 13 16 3 30 22 8 27 19 MIN. QNH PRESSURE IN HPA ****** 1005.4 1007.1 1010.0 1010.4 1010.8 1014.5 1011.0 1017.1 1010.9 1011.2 1011.9 ****** DAY ** 8 15 17 28 21 29 15 8 18 12 14 MEAN QFF PRESSURE IN HPA ****** 1028.5 1019.1 1013.4 1016.6 1014.3 1010.3 1011.4 1018.1 1022.9 1021.8 1034.0 ****** MAX. QFF PRESSURE IN HPA ****** 1040.2 1028.7 1022.0 1025.3 1024.2 1016.5 1019.0 1025.0 1040.7 1033.7 1042.7 ****** DAY ** 6 5 13 13 16 4 31 22 22 30 19 MIN. QFF PRESSURE IN HPA ****** 1012.1 1010.4 1007.0 1003.0 1006.9 1006.6 1003.9 1010.7 1006.7 1008.7 1014.9 ****** DAY ** 8 15 17 28 21 16 15 8 17 12 14 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** 873.0 867.5 866.3 868.4 869.1 867.8 867.5 872.1 873.4 871.0 874.6 ****** MAX. QFE PRESSURE IN HPA ****** 881.7 874.7 873.2 874.9 873.5 873.0 872.8 876.9 880.2 878.8 883.0 ****** DAY ** 18 5 4 17 12 3 30 30 8 27 19 MIN. QFE PRESSURE IN HPA ****** 856.5 858.0 860.0 861.3 862.3 864.9 863.1 866.8 861.3 860.8 861.7 ****** DAY ** 8 14 9 28 21 15 15 8 18 12 14 MEAN QNH PRESSURE IN HPA ****** 1024.2 1018.0 1016.6 1018.9 1019.7 1018.3 1018.0 1023.2 1024.7 1021.9 1026.1 ****** MAX. QNH PRESSURE IN HPA ****** 1034.1 1026.1 1024.4 1026.4 1024.8 1024.2 1024.0 1028.6 1032.4 1030.8 1035.6 ****** DAY ** 18 5 4 17 12 3 30 30 8 27 19 MIN. QNH PRESSURE IN HPA ****** 1005.4 1007.1 1009.4 1010.9 1012.0 1015.0 1012.9 1017.1 1010.9 1010.3 1011.3 ****** DAY ** 8 14 9 28 21 15 15 8 18 12 14 MEAN QFF PRESSURE IN HPA ****** 1032.2 1020.6 1015.6 1017.6 1015.7 1011.8 1012.8 1019.7 1024.1 1022.9 1035.0 ****** MAX. QFF PRESSURE IN HPA ****** 1043.7 1029.8 1026.7 1025.0 1023.5 1017.3 1020.9 1026.0 1041.4 1034.8 1042.9 ****** DAY ** 18 5 4 17 16 3 30 22 22 30 19 MIN. QFF PRESSURE IN HPA ****** 1011.2 1007.5 1004.5 1005.1 1009.7 1007.8 1006.1 1011.9 1006.4 1009.0 1014.6 ****** DAY ** 8 25 9 28 21 15 15 8 17 12 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA ****** 873.9 868.0 866.7 868.8 869.1 868.0 867.8 872.6 874.7 871.6 875.1 ****** MAX. QFE PRESSURE IN HPA ****** 882.8 875.3 873.0 875.6 874.1 873.3 872.9 877.9 882.0 879.9 883.2 ****** DAY ** 18 5 4 17 12 3 30 30 21 30 18 MIN. QFE PRESSURE IN HPA ****** 856.7 858.7 861.0 860.6 862.8 864.8 863.8 867.0 861.8 861.7 862.0 ****** DAY ** 8 14 9 28 21 15 15 8 18 12 14 MEAN QNH PRESSURE IN HPA ****** 1025.2 1018.5 1017.0 1019.4 1019.8 1018.5 1018.2 1023.8 1026.1 1022.6 1026.6 ****** MAX. QNH PRESSURE IN HPA ****** 1035.4 1026.8 1024.2 1027.2 1025.5 1024.5 1024.1 1029.8 1034.4 1032.1 1035.8 ****** DAY ** 18 5 4 17 12 3 30 30 21 30 18 MIN. QNH PRESSURE IN HPA ****** 1005.6 1007.9 1010.5 1010.1 1012.6 1014.9 1013.7 1017.4 1011.4 1011.3 1011.7 ****** DAY ** 8 14 9 28 21 15 15 8 18 12 14 MEAN QFF PRESSURE IN HPA ****** 1030.4 1020.6 1014.0 1017.1 1014.9 1010.7 1012.2 1019.4 1024.8 1023.8 1035.7 ****** MAX. QFF PRESSURE IN HPA ****** 1043.4 1030.7 1023.0 1025.2 1022.5 1018.9 1021.1 1025.7 1042.7 1038.0 1043.6 ****** DAY ** 1 5 13 13 12 3 30 22 22 30 10 MIN. QFF PRESSURE IN HPA ****** 1011.7 1011.9 1006.7 1003.1 1008.1 1005.9 1005.8 1011.8 1006.3 1010.3 1014.3 ****** DAY ** 8 14 16 28 10 15 7 8 17 12 14 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** 873.6 867.5 866.0 868.4 868.5 867.2 866.9 871.7 873.7 870.9 874.1 ****** MAX. QFE PRESSURE IN HPA ****** 882.9 874.7 872.6 875.9 873.6 873.3 872.5 877.0 882.3 880.0 883.0 ****** DAY ** 18 5 3 12 12 3 30 30 21 30 18 MIN. QFE PRESSURE IN HPA ****** 855.7 858.8 860.0 860.3 862.1 863.9 862.7 866.1 860.8 861.0 862.0 ****** DAY ** 8 14 9 28 20 30 14 8 17 12 14 MEAN QNH PRESSURE IN HPA ****** 1024.8 1017.9 1016.2 1019.0 1019.1 1017.6 1017.3 1022.7 1025.0 1021.8 1025.5 ****** MAX. QNH PRESSURE IN HPA ****** 1035.5 1026.1 1023.7 1027.5 1024.9 1024.5 1023.6 1028.8 1034.8 1032.2 1035.6 ****** DAY ** 18 5 3 12 12 3 30 30 21 30 18 MIN. QNH PRESSURE IN HPA ****** 1004.5 1008.0 1009.4 1009.7 1011.8 1013.8 1012.5 1016.3 1010.3 1010.5 1011.7 ****** DAY ** 8 14 9 28 20 30 14 8 17 12 14 MEAN QFF PRESSURE IN HPA ****** 1028.6 1019.4 1012.6 1016.2 1013.7 1009.5 1010.7 1017.3 1022.5 1022.0 1033.4 ****** MAX. QFF PRESSURE IN HPA ****** 1040.6 1028.9 1021.2 1025.9 1022.1 1019.7 1020.5 1024.7 1039.3 1038.2 1041.2 ****** DAY ** 1 5 13 12 15 3 30 30 22 30 18 MIN. QFF PRESSURE IN HPA ****** 1008.4 1010.2 1004.5 1002.3 1006.1 1004.4 1004.1 1010.1 1003.5 1008.6 1014.8 ****** DAY ** 8 18 16 28 10 30 7 8 17 12 14 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** 872.3 866.4 865.1 867.9 867.5 866.2 865.8 870.7 872.6 870.0 873.2 ****** MAX. QFE PRESSURE IN HPA ****** 881.6 873.6 872.1 875.9 873.2 873.0 871.1 875.5 881.3 879.9 882.0 ****** DAY ** 18 5 3 12 15 3 30 30 21 30 18 MIN. QFE PRESSURE IN HPA ****** 856.8 858.1 858.7 860.3 859.8 862.4 860.7 865.3 861.0 860.8 862.5 ****** DAY ** 8 14 9 28 20 30 14 8 17 12 14 MEAN QNH PRESSURE IN HPA ****** 1023.4 1016.7 1015.3 1018.4 1018.0 1016.5 1016.0 1021.6 1023.7 1020.8 1024.4 ****** MAX. QNH PRESSURE IN HPA ****** 1034.0 1024.9 1023.2 1027.5 1024.4 1024.2 1022.0 1027.0 1033.6 1032.1 1034.4 ****** DAY ** 18 5 3 12 15 3 30 30 21 30 18 MIN. QNH PRESSURE IN HPA ****** 1005.8 1007.2 1007.9 1009.7 1009.2 1012.1 1010.2 1015.4 1010.5 1010.3 1012.2 ****** DAY ** 8 14 9 28 20 30 14 8 17 12 14 MEAN QFF PRESSURE IN HPA ****** 1027.2 1018.1 1012.4 1016.2 1012.9 1008.9 1009.7 1016.6 1021.3 1020.8 1032.3 ****** MAX. QFF PRESSURE IN HPA ****** 1037.6 1027.9 1020.7 1025.5 1022.2 1019.0 1018.8 1023.7 1035.8 1038.4 1040.9 ****** DAY ** 1 4 13 12 15 3 30 30 22 30 19 MIN. QFF PRESSURE IN HPA ****** 1010.7 1008.1 1007.4 1003.6 1004.3 1003.7 1002.7 1009.6 1006.3 1008.3 1015.5 ****** DAY ** 8 18 24 27 20 30 27 8 16 12 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** 872.4 866.7 865.4 868.0 867.3 865.8 865.8 870.8 872.8 870.7 874.1 ****** MAX. QFE PRESSURE IN HPA ****** 881.6 873.9 872.9 875.5 873.2 871.0 871.7 875.2 881.1 880.6 882.7 ****** DAY ** 18 28 3 12 12 3 30 21 21 30 18 MIN. QFE PRESSURE IN HPA ****** 858.7 858.5 858.4 860.0 859.6 862.0 860.0 865.7 861.3 861.7 862.6 ****** DAY ** 8 14 9 27 20 30 14 8 17 12 13 MEAN QNH PRESSURE IN HPA ****** 1023.5 1017.1 1015.5 1018.5 1017.7 1016.0 1015.9 1021.6 1024.0 1021.6 1025.4 ****** MAX. QNH PRESSURE IN HPA ****** 1034.0 1025.2 1024.1 1027.0 1024.4 1021.9 1022.7 1026.7 1033.4 1032.8 1035.2 ****** DAY ** 18 28 3 12 12 3 30 21 21 30 18 MIN. QNH PRESSURE IN HPA ****** 1007.9 1007.7 1007.6 1009.4 1008.9 1011.7 1009.4 1015.9 1010.9 1011.3 1012.4 ****** DAY ** 8 14 9 27 20 30 14 8 17 12 13 MEAN QFF PRESSURE IN HPA ****** 1031.4 1019.6 1014.4 1016.9 1013.5 1009.3 1010.7 1017.9 1022.8 1022.4 1034.2 ****** MAX. QFF PRESSURE IN HPA ****** 1043.3 1028.9 1026.3 1024.9 1022.6 1017.2 1020.6 1023.8 1035.4 1039.4 1041.4 ****** DAY ** 18 5 3 12 15 3 30 30 22 30 8 MIN. QFF PRESSURE IN HPA ****** 1012.6 1009.6 1002.3 1004.1 1005.7 1004.2 1003.6 1011.6 1006.4 1009.7 1016.0 ****** DAY ** 8 18 9 27 20 30 14 8 16 12 13 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** 870.3 867.2 866.2 868.7 868.4 866.7 867.3 871.9 873.7 871.3 874.4 ****** MAX. QFE PRESSURE IN HPA ****** 878.1 875.0 871.4 876.5 874.4 870.9 872.4 876.4 881.1 880.8 883.0 ****** DAY ** 5 9 13 12 15 3 29 4 21 30 18 MIN. QFE PRESSURE IN HPA ****** 857.9 859.2 861.9 860.3 860.2 863.3 861.2 867.7 862.0 862.6 863.6 ****** DAY ** 7 14 30 27 20 15 14 7 17 12 13 MEAN QNH PRESSURE IN HPA ****** 1021.1 1017.5 1016.5 1019.4 1019.0 1017.0 1017.7 1022.9 1025.0 1022.3 1025.8 ****** MAX. QNH PRESSURE IN HPA ****** 1030.0 1026.5 1022.4 1028.2 1025.8 1021.8 1023.5 1028.1 1033.4 1033.1 1035.6 ****** DAY ** 5 9 13 12 15 3 29 4 21 30 18 MIN. QNH PRESSURE IN HPA ****** 1007.0 1008.5 1011.6 1009.7 1009.6 1013.2 1010.8 1018.2 1011.7 1012.4 1013.5 ****** DAY ** 7 14 30 27 20 15 14 7 17 12 13 MEAN QFF PRESSURE IN HPA ****** 1028.8 ****** 1014.1 1017.1 1014.0 1009.1 1011.7 1018.5 1024.3 1023.4 1035.2 ****** MAX. QFF PRESSURE IN HPA ****** 1041.8 ****** 1022.4 1026.7 1024.7 1016.9 1021.2 1024.4 1045.2 1039.7 1041.4 ****** DAY ** 1 ** 12 12 15 3 30 21 21 30 18 MIN. QFF PRESSURE IN HPA ****** 1014.1 ****** 1008.3 1002.8 1005.8 1003.8 1002.8 1012.9 1007.3 1011.5 1016.9 ****** DAY ** 13 ** 24 27 20 25 14 7 17 12 13 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** 870.3 867.0 866.1 868.7 868.8 867.1 867.4 872.0 873.8 871.3 874.4 ****** MAX. QFE PRESSURE IN HPA ****** 877.8 874.8 872.0 876.1 873.9 871.6 871.9 876.0 880.9 880.5 883.0 ****** DAY ** 5 5 13 12 12 2 30 21 21 30 18 MIN. QFE PRESSURE IN HPA ****** 856.5 859.2 862.0 860.1 861.0 863.9 861.4 867.2 861.9 863.1 863.2 ****** DAY ** 7 14 16 27 20 15 14 7 17 12 13 MEAN QNH PRESSURE IN HPA ****** 1021.1 1017.4 1016.4 1019.3 1019.4 1017.5 1017.9 1023.1 1025.1 1022.3 1025.8 ****** MAX. QNH PRESSURE IN HPA ****** 1029.7 1026.2 1023.1 1027.7 1025.2 1022.6 1022.9 1027.6 1033.2 1032.7 1035.6 ****** DAY ** 5 5 13 12 12 2 30 21 21 30 18 MIN. QNH PRESSURE IN HPA ****** 1005.4 1008.5 1011.7 1009.5 1010.5 1013.8 1011.0 1017.6 1011.6 1012.9 1013.0 ****** DAY ** 7 14 16 27 20 15 14 7 17 12 13 MEAN QFF PRESSURE IN HPA ****** 1027.5 1019.8 1013.2 1016.6 1014.1 1009.5 1011.5 1017.8 1023.3 1022.5 1034.1 ****** MAX. QFF PRESSURE IN HPA ****** 1039.4 1029.4 1022.0 1027.0 1025.1 1017.1 1020.5 1024.1 1041.7 1039.3 1042.1 ****** DAY ** 1 5 12 12 15 3 30 21 21 30 18 MIN. QFF PRESSURE IN HPA ****** 1013.0 1011.5 1006.6 1000.9 1006.4 1004.6 1002.7 1011.2 1006.2 1010.3 1016.1 ****** DAY ** 7 13 20 27 20 30 14 7 17 11 13 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -4.9 -0.4 -2.6 10.0 12.8 16.7 16.0 17.2 14.5 7.8 5.9 -2.2 7.6 MINIMUN AIR TEMPERATURE (C) -10.9 -4.6 -8.3 3.6 5.3 9.3 11.8 9.8 7.8 2.5 1.0 -6.8 1.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 24 14 15 0 0 0 0 0 0 2 4 20 79 DAYS WITH FREEZING MIN.<= 0 29 22 22 3 3 0 0 0 0 7 13 31 130 TEMPERATURE RECORDS LOWEST(C) -26.8 -17.8 -28.8 -2.0 -0.6 4.0 5.0 2.2 0.8 -4.8 -5.6 -22.0 -28.8 DAY 18 27 3 17 12 10 24 13 23 29 29 21 MAXIMUM AIR TEMPERATURE (C) 1.5 4.9 4.0 17.1 20.6 23.5 20.7 24.2 22.2 14.6 12.8 3.5 14.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 3 0 0 3 0 0 0 6 DAYS WITH MAXIMUM TEMP. <= 0 12 6 13 0 0 0 0 0 0 0 0 6 37 TEMPERATURE RECORDS HIGHEST(C) 7.0 13.8 18.0 26.2 27.4 37.5 27.0 29.5 34.6 23.5 20.4 8.5 37.5 DAY 12 14 21 20 30 26 5 20 1 18 9 17 DIF. BETWEEN (MAX.-MIN.) (C) 12.4 9.5 12.3 13.5 15.3 14.2 8.9 14.4 14.4 12.1 11.8 10.3 12.4 MEAN DAILY TEMP. (MDT) (C) -4.7 0.1 -2.2 10.3 12.9 16.4 16.3 17.0 15.0 8.6 6.9 -1.6 7.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 2.5 0.0 2.9 0.1 0.0 0.0 0.0 5.6 HEATING DEG. DAYS(BASE 18 0C) 703.1 500.1 608.2 229.5 158.2 64.0 59.7 55.3 99.2 291.9 333.7 608.0 3710.7 DEWPOINT (MEAN C) -7.3 -6.3 -6.0 3.0 6.3 10.0 11.8 9.6 9.3 4.2 1.8 -4.5 2.7 MIXING RATIO (G/KG) 2.81 3.03 3.41 5.60 7.11 9.15 10.25 8.94 8.81 6.13 5.13 3.33 6.14 VAPOUR PRESSURE (HPA) 3.90 4.17 4.72 7.72 9.81 12.56 14.06 12.31 12.14 8.51 7.14 4.63 8.47 SATURATION DEF. (HPA) 0.79 2.30 1.64 5.47 5.96 7.49 4.54 8.32 5.47 2.67 2.74 0.90 4.02 RELATIVE HUMIDITY (MEAN %) 84 68 79 67 69 69 78 65 76 83 80 86 75 RELATIVE HUMIDITY (MAX. %) 93 85 90 89 92 91 93 87 96 98 97 95 92 RELATIVE HUMIDITY (MIN. %) 73 51 63 43 43 46 63 42 49 56 55 69 54 RELATIVE HUMIDITY (MEAN% 03UTC) 85 72 86 82 89 87 89 84 90 93 94 91 87 RELATIVE HUMIDITY (MEAN% 09UTC) 83 60 72 51 44 49 66 43 50 63 64 79 60 RELATIVE HUMIDITY (MEAN% 15UTC) 81 64 73 60 62 64 75 60 77 84 72 84 71 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 15.8 21.3 19.9 29.1 12.1 0.3 9.1 0.2 4.4 30.5 6.7 39.9 189.3 DAYS WITH PRECIPITATION >=10 0 0 0 1 0 0 0 0 0 1 0 1 3 DAYS WITH PRECIPITATION >= 5 1 0 1 1 0 0 1 0 0 2 1 4 11 DAYS WITH PRECIPITATION >= 1 4 7 5 7 5 0 1 0 1 4 1 6 41 DAYS WITH PRECIPITATION 5 11 13 13 11 2 7 1 7 9 7 10 96 GREATEST DAILY PRECIPITATION 6.0 4.5 7.4 14.0 4.0 0.3 8.0 0.2 3.0 16.4 5.0 10.0 16.4 DAY 17 26 26 23 19 14 28 23 20 22 13 29 DAY WITH THUNDER STORM 0 0 0 1 11 2 0 0 0 0 0 0 14 DAYS WITH SNOW OR SLEET 9 10 8 0 0 0 0 0 0 0 2 9 38 DAYS WITH DUST 1 0 1 0 0 0 0 0 2 0 0 0 4 WIND DIRECTION (PREVAILING) 225 225 90 225 90 90 90 90 90 90 90 90 90 PREVAILING WIND SPEED(KNOTS) 17.0 23.3 14.0 14.1 15.1 15.2 16.1 16.3 15.1 13.1 11.6 12.3 14.8 PREVAILING WIND PERCENT 16.5 47.3 16.5 23.3 33.9 50.8 72.6 58.5 47.5 42.9 28.3 14.9 34.6 CALMS PERCENT OF WIND 49.6 17.9 56.2 39.2 51.6 40.4 23.0 37.1 44.6 45.7 51.9 69.4 44.1 NO. OF WIND OBSERVATION 248 224 242 240 248 240 248 248 240 247 237 248 2910 VECTOR WIND DIRECTION (MEAN) 216 225 174 184 87 92 89 88 93 94 119 135 110 VECTOR WIND MAGNITUDE(KNOTS) 2.0 10.4 1.6 2.0 5.0 7.5 11.8 9.8 6.8 5.1 2.5 1.0 3.6 WIND STEADINESES (MEAN %) 32.8 68.9 27.6 23.8 79.4 86.2 98.3 98.0 82.9 76.1 45.5 28.6 45.0 WIND SPEED (MEAN KNOTS) 6.1 15.1 5.8 8.4 6.3 8.7 12.0 10.0 8.2 6.7 5.5 3.5 8.0 FASTEST WIND DIRECTION 210 230 220 220 90 90 90 90 230 260 210 250 230 FASTEST WIND SPEED (KNOTS) 41 51 31 29 29 29 29 31 35 39 29 29 51 DAY 18 20 20 2 2 8 9 3 29 20 26 17 DAYS WITH SKY CLEAR (0-2)/8 12 7 8 6 11 18 9 18 15 10 8 8 130 DAYS WITH P.CLOUDY (3-6)/8 9 10 12 11 17 10 14 12 9 13 11 12 140 DAYS WITH CLOUDY (7-8)/8 10 11 11 13 3 2 8 1 6 8 11 11 95 DAYS WITH VISIBILITY =< 2 KM 17 6 13 12 10 9 9 8 23 21 18 15 161 DURATION OF SUNSHINE HOURS 120.8 129.0 157.4 184.0 257.5 307.5 218.5 296.4 243.7 181.7 127.4 113.2 2337.1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 868.9 861.9 871.3 866.7 868.8 866.8 868.0 870.2 870.0 872.3 872.8 870.0 869.0 MAX. QFE PRESSURE IN HPA 878.1 872.5 883.4 880.2 877.3 873.5 873.1 875.5 879.4 880.8 880.9 879.8 883.4 DAY-HOUR 14- 6 23-18 10- 3 16-18 12- 3 9-21 16- 6 25- 6 17- 6 2- 6 19- 6 14- 6 MIN. QFE PRESSURE IN HPA 858.0 849.5 852.7 860.3 861.8 858.0 860.3 863.8 862.6 863.5 864.5 851.5 849.5 DAY-HOUR 2-12 5-21 24- 3 14-15 1- 0 20-15 19-15 22-15 1-15 20-12 26-12 19- 0 MEAN QNH PRESSURE IN HPA 1019.6 1011.6 1022.3 1017.0 1019.4 1017.2 1018.5 1021.0 1020.7 1023.4 1024.0 1020.7 1019.6 MAX. QNH PRESSURE IN HPA 1030.0 1023.6 1036.0 1032.4 1029.1 1024.8 1024.3 1027.0 1031.5 1033.1 1033.2 1031.9 1036.0 DAY-HOUR 14- 6 23-18 10- 3 16-18 12- 3 9-21 16- 6 25- 6 17- 6 2- 6 19- 6 14- 6 MIN. QNH PRESSURE IN HPA 1007.1 997.4 1001.1 1009.7 1011.4 1007.1 1009.7 1013.7 1012.4 1013.4 1014.5 999.7 997.4 DAY-HOUR 2-12 5-21 24- 3 14-15 1- 0 20-15 19-15 22-15 1-15 20-12 26-12 19- 0 MEAN QFF PRESSURE IN HPA 1026.6 1015.4 1028.4 1014.7 1015.5 1010.9 1012.5 1014.6 1015.8 1022.5 1024.2 1026.0 1018.9 MAX. QFF PRESSURE IN HPA 1043.2 1034.1 1053.7 1036.0 1028.2 1020.8 1019.9 1022.6 1030.1 1033.9 1035.9 1040.3 1053.7 DAY-HOUR 24-18 23-18 5- 6 16-18 12- 3 10- 3 29- 6 13- 3 22- 6 2- 6 19- 6 31- 3 MIN. QFF PRESSURE IN HPA 1013.5 997.5 999.6 1003.8 1005.7 997.9 1002.7 1005.0 1004.5 1009.2 1012.3 1000.7 997.5 DAY-HOUR 2-12 5-21 24- 0 14-21 1- 0 20-18 19-12 22-12 14- 9 20-12 26-12 19- 9 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 869.2 861.7 871.3 866.6 868.7 867.1 868.2 870.4 870.2 872.1 873.0 870.0 869.0 MAX. QFE PRESSURE IN HPA 876.7 871.0 883.0 879.7 876.2 872.7 872.4 874.5 878.8 878.2 879.7 879.5 883.0 DAY 14 24 10 17 12 10 16 25 17 6 19 9 MIN. QFE PRESSURE IN HPA 860.8 851.8 853.0 860.5 861.8 860.7 863.0 865.9 864.4 866.1 867.4 851.5 851.5 DAY 2 6 24 3 1 20 20 7 7 28 26 19 MEAN QNH PRESSURE IN HPA 1019.8 1011.3 1022.2 1016.9 1019.3 1017.5 1018.7 1021.3 1021.0 1023.2 1024.2 1020.8 1019.7 MAX. QNH PRESSURE IN HPA 1028.4 1021.9 1035.6 1031.8 1027.8 1023.9 1023.5 1025.9 1030.8 1030.1 1031.8 1031.6 1035.6 DAY 14 24 10 17 12 10 16 25 17 6 19 9 MIN. QNH PRESSURE IN HPA 1010.3 1000.1 1001.4 1010.0 1011.4 1010.2 1012.8 1016.1 1014.4 1016.3 1017.8 999.7 999.7 DAY 2 6 24 3 1 20 20 7 7 28 26 19 MEAN QFF PRESSURE IN HPA 1026.4 1014.6 1028.1 1014.3 1015.6 1011.4 1012.6 1014.9 1016.0 1022.1 1023.9 1024.8 1018.7 MAX. QFF PRESSURE IN HPA 1038.9 1031.8 1047.6 1035.3 1026.2 1020.3 1019.5 1020.7 1028.1 1030.3 1034.2 1037.2 1047.6 DAY 25 28 5 17 12 10 29 25 17 23 19 14 MIN. QFF PRESSURE IN HPA 1015.5 1001.4 999.6 1004.7 1005.7 999.6 1005.8 1006.9 1006.7 1011.9 1015.8 1000.7 999.6 DAY 11 6 24 15 1 21 20 8 2 10 10 19 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 869.1 861.8 871.3 866.9 869.2 867.7 868.5 870.8 870.5 872.5 873.1 869.8 869.3 MAX. QFE PRESSURE IN HPA 877.8 871.0 883.4 879.2 877.3 872.6 872.8 874.5 878.8 879.5 879.7 879.2 883.4 DAY 14 28 10 17 12 10 16 25 17 2 19 14 MIN. QFE PRESSURE IN HPA 860.4 852.9 852.7 860.6 863.5 861.0 863.1 866.0 865.0 866.1 867.4 851.5 851.5 DAY 2 6 24 3 1 20 19 8 14 18 26 19 MEAN QNH PRESSURE IN HPA 1019.7 1011.4 1022.3 1017.3 1019.9 1018.2 1019.1 1021.7 1021.4 1023.6 1024.3 1020.5 1019.9 MAX. QNH PRESSURE IN HPA 1029.7 1021.9 1036.0 1031.3 1029.1 1023.7 1024.0 1025.9 1030.8 1031.6 1031.8 1031.3 1036.0 DAY 14 28 10 17 12 10 16 25 17 2 19 14 MIN. QNH PRESSURE IN HPA 1009.9 1001.3 1001.1 1010.1 1013.4 1010.5 1012.9 1016.2 1015.1 1016.3 1017.8 999.7 999.7 DAY 2 6 24 3 1 20 19 8 14 18 26 19 MEAN QFF PRESSURE IN HPA 1027.1 1015.7 1029.0 1015.9 1017.1 1013.0 1013.6 1016.5 1017.6 1023.5 1025.4 1026.0 1020.0 MAX. QFF PRESSURE IN HPA 1041.8 1032.9 1051.0 1035.4 1028.2 1020.8 1019.2 1022.6 1028.8 1032.2 1034.9 1040.3 1051.0 DAY 24 28 5 17 12 10 29 13 22 2 19 31 MIN. QFF PRESSURE IN HPA 1015.6 1003.6 1000.2 1005.6 1007.4 1003.2 1007.2 1008.2 1008.5 1014.1 1016.6 1001.3 1000.2 DAY 11 5 24 15 1 20 19 8 30 10 26 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 869.5 862.5 871.8 867.8 869.4 867.7 868.8 871.1 871.0 873.4 873.8 870.7 869.8 MAX. QFE PRESSURE IN HPA 878.1 871.8 883.4 878.9 877.3 872.3 873.1 875.5 879.4 880.8 880.9 879.8 883.4 DAY 14 28 10 17 12 9 16 25 17 2 19 14 MIN. QFE PRESSURE IN HPA 860.2 853.7 853.2 862.4 863.6 860.7 863.2 866.3 865.0 865.7 866.5 853.1 853.1 DAY 2 5 24 3 1 20 19 5 14 10 26 19 MEAN QNH PRESSURE IN HPA 1020.3 1012.2 1022.8 1018.3 1020.1 1018.2 1019.4 1022.0 1021.9 1024.6 1025.1 1021.5 1020.5 MAX. QNH PRESSURE IN HPA 1030.0 1022.8 1036.0 1030.9 1029.1 1023.4 1024.3 1027.0 1031.5 1033.1 1033.2 1031.9 1036.0 DAY 14 28 10 17 12 9 16 25 17 2 19 14 MIN. QNH PRESSURE IN HPA 1009.6 1002.2 1001.7 1012.1 1013.5 1010.2 1013.0 1016.6 1015.1 1015.9 1016.8 1001.5 1001.5 DAY 2 5 24 3 1 20 19 5 14 10 26 19 MEAN QFF PRESSURE IN HPA 1028.0 1016.4 1030.0 1016.3 1015.8 1011.6 1013.4 1015.4 1017.0 1024.0 1026.0 1027.8 1020.1 MAX. QFF PRESSURE IN HPA 1042.6 1033.6 1053.7 1034.3 1025.7 1018.6 1019.9 1022.3 1030.1 1033.9 1035.9 1040.2 1053.7 DAY 24 28 5 17 12 10 29 25 22 2 19 31 MIN. QFF PRESSURE IN HPA 1014.1 1003.0 1000.5 1009.0 1007.4 1000.6 1006.3 1007.8 1009.5 1012.7 1015.0 1003.4 1000.5 DAY 2 5 24 3 1 20 19 5 14 10 26 19 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 869.0 861.8 871.7 866.8 868.6 866.8 868.1 870.3 869.9 872.4 872.8 869.6 869.0 MAX. QFE PRESSURE IN HPA 877.8 870.8 882.8 878.0 876.4 872.3 872.4 875.2 877.5 880.2 880.1 878.5 882.8 DAY 23 28 10 16 12 9 16 24 17 2 19 8 MIN. QFE PRESSURE IN HPA 858.4 852.3 854.5 861.4 862.9 860.0 862.2 865.5 863.4 864.7 865.0 852.4 852.3 DAY 2 5 24 24 1 19 19 5 14 20 26 19 MEAN QNH PRESSURE IN HPA 1019.6 1011.5 1022.7 1017.2 1019.2 1017.1 1018.6 1021.1 1020.6 1023.5 1024.0 1020.3 1019.6 MAX. QNH PRESSURE IN HPA 1029.7 1021.7 1035.4 1029.9 1028.1 1023.4 1023.5 1026.7 1029.3 1032.4 1032.3 1030.5 1035.4 DAY 23 28 10 16 12 9 16 24 17 2 19 8 MIN. QNH PRESSURE IN HPA 1007.6 1000.6 1003.1 1011.0 1012.7 1009.4 1011.9 1015.7 1013.3 1014.8 1015.1 1000.7 1000.6 DAY 2 5 24 24 1 19 19 5 14 20 26 19 MEAN QFF PRESSURE IN HPA 1026.4 1014.7 1027.9 1014.3 1014.5 1010.2 1012.2 1014.0 1014.8 1021.6 1023.4 1025.0 1018.2 MAX. QFF PRESSURE IN HPA 1040.2 1031.0 1048.5 1032.6 1025.0 1018.8 1019.3 1021.3 1026.5 1033.3 1035.0 1036.4 1048.5 DAY 24 28 5 16 12 9 17 24 17 2 19 14 MIN. QFF PRESSURE IN HPA 1013.9 1000.4 1001.9 1007.7 1006.1 999.9 1004.1 1006.4 1004.5 1009.8 1012.6 1000.7 999.9 DAY 2 5 24 3 1 19 19 5 14 20 26 19 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 868.1 861.1 870.8 865.9 868.0 865.8 867.1 869.2 868.7 871.3 871.8 869.2 868.1 MAX. QFE PRESSURE IN HPA 876.6 870.1 881.5 878.0 876.0 872.4 871.1 874.2 875.8 879.4 878.8 877.9 881.5 DAY 23 23 10 16 12 9 16 24 17 2 19 8 MIN. QFE PRESSURE IN HPA 858.0 850.2 856.1 860.9 862.2 858.8 860.8 864.3 863.1 863.5 864.5 852.9 850.2 DAY 2 5 24 14 2 20 19 22 1 20 26 19 MEAN QNH PRESSURE IN HPA 1018.6 1010.6 1021.7 1016.1 1018.5 1016.0 1017.4 1019.9 1019.3 1022.3 1022.8 1019.9 1018.6 MAX. QNH PRESSURE IN HPA 1028.3 1020.9 1033.9 1029.9 1027.6 1023.5 1022.0 1025.6 1027.4 1031.5 1030.8 1029.8 1033.9 DAY 23 23 10 16 12 9 16 24 17 2 19 8 MIN. QNH PRESSURE IN HPA 1007.1 998.2 1005.0 1010.4 1011.9 1008.0 1010.3 1014.3 1012.9 1013.4 1014.5 1001.3 998.2 DAY 2 5 24 14 2 20 19 22 1 20 26 19 MEAN QFF PRESSURE IN HPA 1025.0 1013.9 1027.2 1013.4 1014.6 1009.7 1011.3 1013.2 1014.0 1021.3 1022.4 1024.0 1017.5 MAX. QFF PRESSURE IN HPA 1035.2 1029.9 1046.5 1032.7 1025.5 1019.6 1017.1 1020.1 1024.7 1032.3 1034.3 1035.2 1046.5 DAY 23 28 9 16 12 9 17 24 17 2 19 14 MIN. QFF PRESSURE IN HPA 1013.5 997.8 1006.0 1005.9 1008.2 999.2 1002.7 1005.0 1005.2 1009.2 1012.3 1002.4 997.8 DAY 2 5 20 3 1 20 19 22 14 20 26 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 868.6 861.8 871.0 865.9 868.0 865.6 866.8 869.1 868.9 871.7 872.3 870.0 868.3 MAX. QFE PRESSURE IN HPA 876.9 871.2 881.3 878.9 875.3 872.5 871.2 874.2 876.0 879.4 879.0 878.8 881.3 DAY 23 23 10 16 11 9 15 24 16 2 19 8 MIN. QFE PRESSURE IN HPA 859.3 849.9 859.1 860.3 862.0 858.0 860.3 863.8 862.6 865.0 865.1 855.7 849.9 DAY 2 5 23 14 2 20 19 22 1 18 26 18 MEAN QNH PRESSURE IN HPA 1019.2 1011.4 1021.9 1016.1 1018.5 1015.7 1017.1 1019.7 1019.6 1022.7 1023.4 1020.8 1018.9 MAX. QNH PRESSURE IN HPA 1028.6 1022.2 1033.6 1030.9 1026.8 1023.6 1022.2 1025.6 1027.6 1031.5 1031.0 1030.8 1033.6 DAY 23 23 10 16 11 9 15 24 16 2 19 8 MIN. QNH PRESSURE IN HPA 1008.6 997.9 1008.4 1009.7 1011.7 1007.1 1009.7 1013.7 1012.4 1015.1 1015.2 1004.5 997.9 DAY 2 5 23 14 2 20 19 22 1 18 26 18 MEAN QFF PRESSURE IN HPA 1026.4 1015.7 1028.1 1014.5 1015.6 1010.3 1011.5 1014.2 1015.5 1022.5 1024.4 1026.5 1018.8 MAX. QFF PRESSURE IN HPA 1038.9 1032.2 1049.3 1034.4 1025.4 1020.3 1017.0 1020.2 1025.6 1032.7 1034.8 1037.0 1049.3 DAY 24 23 9 16 11 9 17 11 21 2 19 31 MIN. QFF PRESSURE IN HPA 1014.8 998.0 1007.1 1004.9 1009.5 998.8 1003.1 1006.0 1006.4 1012.9 1013.4 1006.3 998.0 DAY 2 5 20 14 30 20 19 22 1 17 26 18 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 869.1 862.4 871.6 866.8 869.2 866.8 868.2 870.3 870.2 872.4 872.9 870.4 869.2 MAX. QFE PRESSURE IN HPA 877.1 872.5 882.1 880.2 876.5 873.4 872.4 875.4 877.9 879.4 880.0 879.4 882.1 DAY 23 23 9 16 11 9 15 24 16 2 18 8 MIN. QFE PRESSURE IN HPA 861.3 850.0 857.8 860.6 864.6 858.8 862.1 865.6 863.7 866.4 866.5 854.3 850.0 DAY 18 5 23 14 3 20 19 6 1 18 26 18 MEAN QNH PRESSURE IN HPA 1019.8 1012.2 1022.6 1017.1 1019.9 1017.1 1018.8 1021.1 1021.1 1023.6 1024.1 1021.2 1019.9 MAX. QNH PRESSURE IN HPA 1028.9 1023.6 1034.6 1032.4 1028.2 1024.7 1023.5 1026.9 1029.8 1031.5 1032.2 1031.5 1034.6 DAY 23 23 9 16 11 9 15 24 16 2 18 8 MIN. QNH PRESSURE IN HPA 1010.9 998.0 1006.9 1010.1 1014.6 1008.0 1011.8 1015.8 1013.6 1016.7 1016.8 1002.9 998.0 DAY 18 5 23 14 3 20 19 6 1 18 26 18 MEAN QFF PRESSURE IN HPA 1027.3 1016.5 1029.6 1015.1 1015.5 1010.4 1012.7 1014.4 1016.1 1023.0 1024.9 1027.8 1019.4 MAX. QFF PRESSURE IN HPA 1043.2 1034.1 1051.3 1036.0 1025.0 1020.4 1018.7 1021.8 1027.2 1032.6 1033.9 1038.0 1051.3 DAY 24 23 4 16 11 9 15 24 22 2 18 30 MIN. QFF PRESSURE IN HPA 1015.1 999.0 1008.6 1003.8 1008.8 997.9 1004.6 1007.3 1005.8 1013.5 1015.0 1011.4 997.9 DAY 21 5 19 14 20 20 19 5 1 18 26 19 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 868.9 862.4 871.4 866.7 869.2 867.2 868.5 870.5 870.4 872.6 872.9 870.2 869.3 MAX. QFE PRESSURE IN HPA 876.4 872.0 882.1 880.2 876.4 873.5 872.9 875.0 878.5 878.3 880.0 879.6 882.1 DAY 23 23 9 16 11 9 15 24 16 2 18 8 MIN. QFE PRESSURE IN HPA 861.0 849.5 855.9 861.4 864.3 859.5 862.8 866.1 864.5 866.7 867.6 852.3 849.5 DAY 18 5 23 14 1 20 19 4 6 17 26 18 MEAN QNH PRESSURE IN HPA 1019.6 1012.1 1022.4 1017.0 1019.9 1017.6 1019.1 1021.4 1021.2 1023.8 1024.1 1021.1 1019.9 MAX. QNH PRESSURE IN HPA 1028.1 1023.1 1034.6 1032.4 1028.1 1024.8 1024.1 1026.5 1030.5 1030.2 1032.2 1031.7 1034.6 DAY 23 23 9 16 11 9 15 24 16 2 18 8 MIN. QNH PRESSURE IN HPA 1010.5 997.4 1004.7 1011.0 1014.3 1008.8 1012.6 1016.3 1014.5 1017.0 1018.1 1000.6 997.4 DAY 18 5 23 14 1 20 19 4 6 17 26 18 MEAN QFF PRESSURE IN HPA 1026.2 1015.6 1027.6 1014.1 1015.2 1010.7 1012.8 1014.2 1015.3 1022.1 1023.7 1026.0 1018.6 MAX. QFF PRESSURE IN HPA 1039.0 1033.0 1048.6 1035.8 1025.4 1020.3 1018.7 1021.0 1027.5 1030.9 1033.8 1038.3 1048.6 DAY 24 23 4 16 11 9 15 24 16 2 18 30 MIN. QFF PRESSURE IN HPA 1015.0 997.5 1003.5 1003.8 1007.2 999.3 1004.4 1007.6 1004.7 1012.2 1015.8 1001.0 997.5 DAY 11 5 23 14 20 20 19 4 1 9 26 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.6 -0.3 -1.4 7.6 11.5 14.6 18.6 18.4 17.4 11.7 4.1 -2.0 8.2 MINIMUN AIR TEMPERATURE (C) -7.2 -5.0 -5.0 1.9 5.0 7.4 11.4 10.1 6.2 5.9 0.8 -8.3 1.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 18 20 21 0 0 0 0 0 0 0 0 20 79 DAYS WITH FREEZING MIN.<= 0 28 27 29 10 0 0 0 0 1 3 20 24 142 TEMPERATURE RECORDS LOWEST(C) -20.0 -11.0 -16.6 -2.0 0.6 4.0 4.5 2.5 -1.2 -1.0 -3.0 -22.0 -22.0 DAY 24 2 3 21 19 1 23 31 13 25 30 12 MAXIMUM AIR TEMPERATURE (C) 5.0 5.5 3.5 13.8 18.7 21.4 25.2 25.1 24.2 17.1 7.1 2.4 14.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 4 0 3 0 0 0 7 DAYS WITH MAXIMUM TEMP. <= 0 6 8 11 0 0 0 0 0 0 0 2 14 41 TEMPERATURE RECORDS HIGHEST(C) 11.0 15.0 13.0 24.0 25.6 27.4 37.0 29.4 33.5 25.0 21.0 12.0 37.0 DAY 6 26 5 15 21 5 30 14 24 19 2 26 DIF. BETWEEN (MAX.-MIN.) (C) 12.2 10.5 8.5 11.9 13.7 14.0 13.8 15.0 18.0 11.2 6.3 10.7 12.2 MEAN DAILY TEMP. (MDT) (C) -1.1 0.2 -0.7 7.8 11.9 14.4 18.3 17.6 15.2 11.5 3.9 -3.0 8.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.0 11.4 0.0 0.3 0.0 0.0 0.0 11.7 HEATING DEG. DAYS(BASE 18 0C) 590.6 498.1 580.9 304.8 189.9 107.4 24.3 27.2 90.6 201.2 421.8 626.2 3663.0 DEWPOINT (MEAN C) -6.6 -4.1 -3.6 2.8 6.5 9.9 12.0 10.7 8.1 6.7 1.2 -7.1 3.0 MIXING RATIO (G/KG) 2.86 3.30 3.50 5.50 7.16 9.00 10.45 9.59 8.14 7.19 4.87 2.78 6.19 VAPOUR PRESSURE (HPA) 3.97 4.58 4.87 7.63 9.87 12.35 14.34 13.20 11.26 9.97 6.77 3.86 8.56 SATURATION DEF. (HPA) 2.03 1.82 0.94 3.37 4.41 5.07 8.18 9.09 10.56 4.46 2.00 2.00 4.49 RELATIVE HUMIDITY (MEAN %) 72 79 87 76 75 77 70 64 62 77 84 72 75 RELATIVE HUMIDITY (MAX. %) 87 94 97 97 96 97 92 89 91 94 94 86 93 RELATIVE HUMIDITY (MIN. %) 53 59 72 51 48 53 48 43 41 58 75 61 55 RELATIVE HUMIDITY (MEAN% 03UTC) 81 91 93 94 92 96 86 84 89 91 91 79 89 RELATIVE HUMIDITY (MEAN% 09UTC) 66 69 79 56 53 56 52 45 42 61 78 71 61 RELATIVE HUMIDITY (MEAN% 15UTC) 68 69 85 73 72 69 62 64 67 83 88 72 73 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 5.6 10.1 42.8 26.9 23.3 21.9 0.6 0.0 21.9 17.9 12.7 12.4 196.1 DAYS WITH PRECIPITATION >=10 0 0 2 0 0 0 0 0 1 0 0 0 3 DAYS WITH PRECIPITATION >= 5 0 0 2 1 2 1 0 0 1 2 0 0 9 DAYS WITH PRECIPITATION >= 1 2 5 7 8 6 7 0 0 3 4 6 4 52 DAYS WITH PRECIPITATION 6 5 15 12 14 12 2 0 5 10 9 7 97 GREATEST DAILY PRECIPITATION 3.0 3.0 16.4 9.2 8.0 9.6 0.6 0.0 17.0 6.0 4.0 4.0 17.0 DAY 16 10 31 3 22 20 26 ** 30 12 18 4 DAY WITH THUNDER STORM 0 0 1 1 7 5 0 0 0 1 0 0 15 DAYS WITH SNOW OR SLEET 5 7 13 1 0 0 0 0 0 0 8 6 40 DAYS WITH DUST 1 1 0 0 1 0 0 0 0 0 1 1 5 WIND DIRECTION (PREVAILING) 225 90 90 90 90 90 90 90 90 90 90 225 90 PREVAILING WIND SPEED(KNOTS) 20.3 14.8 16.2 15.4 15.5 11.7 15.7 13.4 13.3 13.7 12.0 25.5 14.4 PREVAILING WIND PERCENT 25.3 21.4 41.1 40.0 31.5 46.3 52.4 57.7 58.0 33.5 42.3 37.0 36.4 CALMS PERCENT OF WIND 47.8 47.8 51.6 46.3 41.5 51.7 44.8 40.8 34.7 47.1 32.9 33.7 44.1 NO. OF WIND OBSERVATION 245 224 248 240 248 240 248 201 150 155 149 208 2556 VECTOR WIND DIRECTION (MEAN) 201 182 89 90 122 88 85 89 90 111 131 222 116 VECTOR WIND MAGNITUDE(KNOTS) 4.8 3.2 6.7 5.3 3.4 5.3 8.2 7.8 7.3 3.8 4.6 10.5 3.9 WIND STEADINESES (MEAN %) 50.5 36.4 91.8 65.4 37.4 94.6 96.5 98.7 86.9 52.8 51.7 76.6 45.3 WIND SPEED (MEAN KNOTS) 9.5 8.8 7.3 8.1 9.1 5.6 8.5 7.9 8.4 7.2 8.9 13.7 8.6 FASTEST WIND DIRECTION 240 220 90 250 220 90 90 90 90 90 200 210 210 FASTEST WIND SPEED (KNOTS) 56 64 29 43 43 29 39 35 31 35 31 66 66 DAY 9 3 1 15 3 30 14 27 2 6 8 21 DAYS WITH SKY CLEAR (0-2)/8 10 8 7 1 6 13 18 17 18 4 3 16 121 DAYS WITH P.CLOUDY (3-6)/8 16 11 4 17 17 13 10 12 7 14 5 8 134 DAYS WITH CLOUDY (7-8)/8 5 9 20 12 8 4 3 2 5 13 22 7 110 DAYS WITH VISIBILITY =< 2 KM 13 13 22 14 18 8 8 3 15 19 12 8 153 DURATION OF SUNSHINE HOURS 154.6 142.4 117.0 150.5 231.2 250.4 284.8 289.9 258.1 145.0 60.8 153.5 2238.2 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 869.3 867.5 871.0 870.2 867.9 866.7 868.8 870.1 872.5 873.0 871.7 869.2 869.8 MAX. QFE PRESSURE IN HPA 878.8 875.2 877.7 878.4 876.5 874.0 873.6 874.8 878.3 881.3 879.7 882.7 882.7 DAY-HOUR 23- 6 22- 6 16-18 4-18 18- 6 2-21 3- 6 3-18 7- 6 14- 9 16- 6 10- 6 MIN. QFE PRESSURE IN HPA 858.4 856.4 864.2 862.2 856.0 860.9 863.0 863.1 867.0 865.2 860.3 855.6 855.6 DAY-HOUR 19-12 6-12 25- 0 11-12 3-15 12-12 9-15 14-15 24-12 1-15 9- 9 27-12 MEAN QNH PRESSURE IN HPA 1020.0 1017.9 1021.9 1021.0 1018.4 1017.0 1019.4 1020.9 1023.7 1024.2 1022.7 1019.8 1020.6 MAX. QNH PRESSURE IN HPA 1030.8 1026.7 1029.6 1030.3 1028.2 1025.3 1024.9 1026.2 1030.2 1033.6 1031.8 1035.2 1035.2 DAY-HOUR 23- 6 22- 6 16-18 4-18 18- 6 2-21 3- 6 3-18 7- 6 14- 9 16- 6 10- 6 MIN. QNH PRESSURE IN HPA 1007.6 1005.3 1014.2 1011.9 1004.8 1010.4 1012.8 1012.9 1017.4 1015.3 1009.7 1004.4 1004.4 DAY-HOUR 19-12 6-12 25- 0 11-12 3-15 12-12 9-15 14-15 24-12 1-15 9- 9 27-12 MEAN QFF PRESSURE IN HPA 1025.0 1021.9 1026.6 1020.2 1015.2 1011.8 1012.1 1014.2 ****** ****** ****** 1023.1 ****** MAX. QFF PRESSURE IN HPA 1042.5 1030.1 1040.1 1031.6 1028.4 1021.8 1020.3 1021.1 ****** ****** ****** 1045.9 ****** DAY-HOUR 24- 3 13- 6 2-18 4-18 19- 3 3- 3 3- 3 31- 3 **-** **-** **-** 6-15 MIN. QFF PRESSURE IN HPA 1007.7 1006.7 1015.1 1007.7 999.0 1002.9 1002.3 1005.0 ****** ****** ****** 1003.9 ****** DAY-HOUR 12- 9 6-12 6- 0 11-12 3-12 12- 9 9-18 14-21 **-** **-** **-** 27-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 869.4 867.4 870.8 869.9 867.9 866.7 868.9 870.0 ****** ****** ****** 866.9 ****** MAX. QFE PRESSURE IN HPA 876.3 873.5 876.9 877.4 876.0 873.2 873.0 873.9 ****** ****** ****** 873.2 ****** DAY 24 22 28 5 18 3 3 4 ** ** ** 25 MIN. QFE PRESSURE IN HPA 860.7 859.3 864.2 862.7 857.4 861.6 864.7 864.7 ****** ****** ****** 859.2 ****** DAY 12 6 25 11 4 13 10 15 ** ** ** 27 MEAN QNH PRESSURE IN HPA 1020.1 1017.9 1021.7 1020.7 1018.4 1017.0 1019.5 1020.8 ****** ****** ****** 1017.2 ****** MAX. QNH PRESSURE IN HPA 1028.0 1024.8 1028.6 1029.2 1027.6 1024.4 1024.2 1025.2 ****** ****** ****** 1024.4 ****** DAY 24 22 28 5 18 3 3 4 ** ** ** 25 MIN. QNH PRESSURE IN HPA 1010.2 1008.6 1014.2 1012.5 1006.4 1011.2 1014.8 1014.8 ****** ****** ****** 1008.5 ****** DAY 12 6 25 11 4 13 10 15 ** ** ** 27 MEAN QFF PRESSURE IN HPA 1024.5 1021.3 1026.2 1019.9 1015.3 1012.4 1012.4 1014.0 ****** ****** ****** 1020.5 ****** MAX. QFF PRESSURE IN HPA 1040.3 1028.8 1037.8 1030.6 1027.5 1021.1 1019.5 1018.9 ****** ****** ****** 1032.3 ****** DAY 24 13 3 5 18 3 22 4 ** ** ** 17 MIN. QFF PRESSURE IN HPA 1009.6 1010.6 1015.1 1009.8 1001.0 1004.9 1003.7 1006.7 ****** ****** ****** 1007.0 ****** DAY 12 4 6 11 4 13 10 15 ** ** ** 27 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 869.3 867.6 871.0 870.4 868.4 867.1 869.6 871.0 873.3 873.3 871.9 869.6 870.2 MAX. QFE PRESSURE IN HPA 877.0 873.8 876.9 877.4 876.2 873.3 873.5 873.6 876.3 879.6 879.0 881.7 881.7 DAY 23 22 28 5 19 3 3 4 7 15 16 10 MIN. QFE PRESSURE IN HPA 859.8 858.5 864.8 863.6 857.6 862.7 865.6 865.1 869.2 867.1 861.3 858.7 857.6 DAY 12 6 25 11 3 13 10 15 15 1 8 27 MEAN QNH PRESSURE IN HPA 1019.9 1018.0 1022.0 1021.2 1019.0 1017.5 1020.4 1021.9 1024.6 1024.5 1023.0 1020.4 1021.0 MAX. QNH PRESSURE IN HPA 1028.8 1025.1 1028.6 1029.2 1027.8 1024.5 1024.8 1024.9 1028.0 1031.7 1031.0 1034.1 1034.1 DAY 23 22 28 5 19 3 3 4 7 15 16 10 MIN. QNH PRESSURE IN HPA 1009.2 1007.7 1014.9 1013.5 1006.7 1012.5 1015.8 1015.2 1019.9 1017.5 1010.9 1007.9 1006.7 DAY 12 6 25 11 3 13 10 15 15 1 8 27 MEAN QFF PRESSURE IN HPA 1025.6 1022.7 1027.5 1021.4 1016.6 1013.2 1013.8 1016.4 1020.9 1023.0 1025.1 1026.9 1021.1 MAX. QFF PRESSURE IN HPA 1042.5 1028.9 1038.4 1031.4 1028.4 1021.8 1020.3 1021.1 1028.0 1031.2 1034.8 1044.5 1044.5 DAY 24 13 3 5 19 3 3 31 30 15 16 7 MIN. QFF PRESSURE IN HPA 1010.3 1010.8 1017.7 1011.6 1002.5 1006.0 1006.4 1009.0 1015.2 1012.0 1009.1 1006.6 1002.5 DAY 12 4 10 15 3 13 10 15 24 23 9 27 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 870.3 868.3 871.8 871.1 868.5 867.1 869.7 871.2 873.9 874.1 872.5 870.7 870.8 MAX. QFE PRESSURE IN HPA 878.8 875.2 877.5 877.7 876.5 873.5 873.6 874.0 878.3 881.2 879.7 882.7 882.7 DAY 23 22 27 5 18 3 3 3 7 14 16 10 MIN. QFE PRESSURE IN HPA 859.6 857.5 866.5 863.5 858.2 862.8 865.6 866.0 869.7 867.5 861.4 859.2 857.5 DAY 19 6 25 11 3 12 9 15 15 1 9 27 MEAN QNH PRESSURE IN HPA 1021.1 1018.8 1022.8 1022.0 1019.1 1017.5 1020.4 1022.2 1025.2 1025.4 1023.6 1021.6 1021.6 MAX. QNH PRESSURE IN HPA 1030.8 1026.7 1029.3 1029.6 1028.2 1024.8 1024.9 1025.3 1030.2 1033.5 1031.8 1035.2 1035.2 DAY 23 22 27 5 18 3 3 3 7 14 16 10 MIN. QNH PRESSURE IN HPA 1008.9 1006.6 1016.8 1013.4 1007.4 1012.6 1015.8 1016.2 1020.4 1017.9 1011.0 1008.5 1006.6 DAY 19 6 25 11 3 12 9 15 15 1 9 27 MEAN QFF PRESSURE IN HPA 1026.5 1023.1 1027.8 1021.1 1015.6 1011.9 1012.9 1014.4 ****** ****** ****** 1022.0 ****** MAX. QFF PRESSURE IN HPA 1042.4 1030.1 1037.0 1030.8 1027.8 1020.2 1018.8 1019.2 ****** ****** ****** 1037.6 ****** DAY 24 13 3 5 18 3 2 3 ** ** ** 17 MIN. QFF PRESSURE IN HPA 1009.9 1010.3 1018.1 1009.6 1002.5 1004.9 1004.4 1007.3 ****** ****** ****** 1007.2 ****** DAY 19 6 6 11 3 12 9 15 ** ** ** 27 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 869.2 867.6 871.1 870.4 867.6 866.4 868.8 870.2 872.6 873.1 871.6 869.8 869.9 MAX. QFE PRESSURE IN HPA 878.0 873.6 877.5 877.0 875.7 872.4 872.7 873.6 878.1 881.3 879.5 882.2 882.2 DAY 23 22 16 5 18 2 3 3 7 14 15 10 MIN. QFE PRESSURE IN HPA 858.8 857.8 867.0 863.4 857.3 861.6 864.4 865.0 868.3 867.0 860.3 857.7 857.3 DAY 19 6 9 11 3 12 30 15 25 4 9 27 MEAN QNH PRESSURE IN HPA 1019.8 1018.1 1022.0 1021.2 1018.1 1016.7 1019.4 1021.0 1023.7 1024.3 1022.6 1020.6 1020.6 MAX. QNH PRESSURE IN HPA 1029.9 1024.9 1029.3 1028.8 1027.3 1023.5 1023.9 1024.9 1030.0 1033.6 1031.6 1034.7 1034.7 DAY 23 22 16 5 18 2 3 3 7 14 15 10 MIN. QNH PRESSURE IN HPA 1008.0 1006.9 1017.4 1013.3 1006.3 1011.2 1014.4 1015.1 1018.8 1017.4 1009.7 1006.8 1006.3 DAY 19 6 9 11 3 12 30 15 25 4 9 27 MEAN QFF PRESSURE IN HPA 1024.2 1021.6 1026.3 1019.8 1014.3 1011.0 1011.6 1013.2 ****** ****** ****** 1020.0 ****** MAX. QFF PRESSURE IN HPA 1038.9 1029.1 1036.2 1029.5 1026.7 1018.7 1018.0 1018.8 ****** ****** ****** 1033.7 ****** DAY 23 12 16 5 17 3 1 3 ** ** ** 17 MIN. QFF PRESSURE IN HPA 1007.7 1009.3 1016.2 1009.0 1000.9 1002.9 1003.2 1006.1 ****** ****** ****** 1005.8 ****** DAY 12 6 6 11 3 12 9 15 ** ** ** 27 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 868.6 866.6 870.1 869.5 866.9 865.9 867.9 869.3 871.4 872.3 871.0 869.2 869.1 MAX. QFE PRESSURE IN HPA 877.0 872.0 877.2 876.0 875.1 872.4 871.6 873.3 876.8 881.0 878.6 881.5 881.5 DAY 23 22 16 4 17 2 14 3 7 14 15 10 MIN. QFE PRESSURE IN HPA 858.4 856.4 865.5 862.2 856.4 860.9 863.6 863.5 867.0 865.3 861.0 855.6 855.6 DAY 19 6 9 11 3 12 9 22 24 1 8 27 MEAN QNH PRESSURE IN HPA 1019.2 1016.9 1020.9 1020.2 1017.3 1016.1 1018.4 1020.0 1022.4 1023.3 1021.9 1019.8 1019.7 MAX. QNH PRESSURE IN HPA 1028.8 1023.1 1029.0 1027.6 1026.6 1023.5 1022.6 1024.5 1028.5 1033.3 1030.6 1033.9 1033.9 DAY 23 22 16 4 17 2 14 3 7 14 15 10 MIN. QNH PRESSURE IN HPA 1007.6 1005.3 1015.7 1011.9 1005.3 1010.4 1013.5 1013.4 1017.4 1015.4 1010.5 1004.4 1004.4 DAY 19 6 9 11 3 12 9 22 24 1 8 27 MEAN QFF PRESSURE IN HPA 1023.4 1020.2 1025.2 1019.2 1014.0 1011.3 1011.0 1012.3 ****** ****** ****** 1019.0 ****** MAX. QFF PRESSURE IN HPA 1037.0 1027.7 1035.9 1028.1 1026.4 1020.0 1016.6 1018.7 ****** ****** ****** 1031.4 ****** DAY 23 1 16 5 17 2 3 3 ** ** ** 16 MIN. QFF PRESSURE IN HPA 1008.4 1006.7 1016.6 1007.7 999.0 1003.7 1002.5 1005.2 ****** ****** ****** 1003.9 ****** DAY 12 6 6 11 3 28 30 15 ** ** ** 27 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 869.1 867.1 870.4 869.6 867.2 866.1 867.7 869.2 871.5 872.5 871.4 870.0 869.3 MAX. QFE PRESSURE IN HPA 877.3 872.1 877.0 876.9 875.1 872.5 871.6 873.5 876.5 880.6 878.7 881.5 881.5 DAY 23 12 16 4 17 2 21 3 29 14 15 10 MIN. QFE PRESSURE IN HPA 858.9 859.2 864.6 862.5 856.0 861.0 863.0 863.1 867.4 865.2 861.3 856.8 856.0 DAY 19 6 9 11 3 12 9 14 25 1 8 27 MEAN QNH PRESSURE IN HPA 1019.8 1017.5 1021.2 1020.4 1017.6 1016.3 1018.1 1019.8 1022.5 1023.7 1022.4 1020.7 1020.0 MAX. QNH PRESSURE IN HPA 1029.1 1023.2 1028.8 1028.6 1026.6 1023.6 1022.6 1024.8 1028.2 1032.8 1030.7 1033.9 1033.9 DAY 23 12 16 4 17 2 21 3 29 14 15 10 MIN. QNH PRESSURE IN HPA 1008.1 1008.5 1014.6 1012.2 1004.8 1010.5 1012.8 1012.9 1017.8 1015.3 1010.9 1005.8 1004.8 DAY 19 6 9 11 3 12 9 14 25 1 8 27 MEAN QFF PRESSURE IN HPA 1025.3 1022.0 1026.6 1020.3 1015.1 1011.8 1011.4 1014.0 1018.7 1022.0 1024.8 1027.2 1019.9 MAX. QFF PRESSURE IN HPA 1041.8 1028.5 1037.6 1029.1 1026.9 1021.1 1016.7 1019.4 1026.9 1032.4 1034.9 1045.9 1045.9 DAY 23 12 2 4 17 2 21 30 29 14 15 6 MIN. QFF PRESSURE IN HPA 1012.0 1010.4 1016.9 1009.2 1000.5 1004.1 1003.7 1006.9 1012.3 1011.5 1009.9 1005.9 1000.5 DAY 12 6 9 15 3 12 9 22 25 4 7 27 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 869.5 867.7 871.3 870.5 868.4 867.0 868.9 869.7 ****** ****** ****** 867.4 ****** MAX. QFE PRESSURE IN HPA 877.3 872.8 877.7 878.4 876.0 873.9 872.7 874.8 ****** ****** ****** 873.4 ****** DAY 23 21 16 4 17 2 2 3 ** ** ** 24 MIN. QFE PRESSURE IN HPA 860.1 858.9 865.0 864.0 858.2 861.4 863.6 863.6 ****** ****** ****** 857.3 ****** DAY 19 6 9 10 3 12 9 14 ** ** ** 27 MEAN QNH PRESSURE IN HPA 1020.2 1018.2 1022.3 1021.3 1019.0 1017.4 1019.6 1020.5 ****** ****** ****** 1017.8 ****** MAX. QNH PRESSURE IN HPA 1029.1 1024.0 1029.6 1030.3 1027.6 1025.2 1023.9 1026.2 ****** ****** ****** 1024.7 ****** DAY 23 21 16 4 17 2 2 3 ** ** ** 24 MIN. QNH PRESSURE IN HPA 1009.5 1008.1 1015.1 1014.0 1007.4 1011.0 1013.5 1013.5 ****** ****** ****** 1006.3 ****** DAY 19 6 9 10 3 12 9 14 ** ** ** 27 MEAN QFF PRESSURE IN HPA 1025.8 1022.5 1027.2 1020.4 1015.4 1011.8 1012.0 1013.4 ****** ****** ****** 1021.9 ****** MAX. QFF PRESSURE IN HPA 1041.4 1029.4 1040.1 1031.6 1028.3 1020.6 1018.9 1020.0 ****** ****** ****** 1036.2 ****** DAY 23 12 2 4 17 2 1 3 ** ** ** 17 MIN. QFF PRESSURE IN HPA 1013.9 1009.1 1017.2 1010.6 1002.3 1003.3 1002.3 1005.3 ****** ****** ****** 1007.0 ****** DAY 19 6 9 11 3 12 9 14 ** ** ** 27 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 869.4 867.7 871.2 870.4 868.3 867.0 869.0 870.0 ****** ****** ****** 867.3 ****** MAX. QFE PRESSURE IN HPA 876.9 873.5 877.6 877.9 876.0 874.0 873.0 874.6 ****** ****** ****** 873.9 ****** DAY 23 21 27 4 17 2 2 3 ** ** ** 24 MIN. QFE PRESSURE IN HPA 861.0 859.9 864.9 863.5 857.4 861.6 864.0 863.9 ****** ****** ****** 859.0 ****** DAY 19 3 24 10 3 12 9 14 ** ** ** 27 MEAN QNH PRESSURE IN HPA 1020.1 1018.2 1022.2 1021.2 1018.9 1017.3 1019.7 1020.7 ****** ****** ****** 1017.7 ****** MAX. QNH PRESSURE IN HPA 1028.6 1024.8 1029.4 1029.8 1027.6 1025.3 1024.2 1026.0 ****** ****** ****** 1025.2 ****** DAY 23 21 27 4 17 2 2 3 ** ** ** 24 MIN. QNH PRESSURE IN HPA 1010.5 1009.3 1015.0 1013.4 1006.4 1011.2 1014.0 1013.8 ****** ****** ****** 1008.3 ****** DAY 19 3 24 10 3 12 9 14 ** ** ** 27 MEAN QFF PRESSURE IN HPA 1024.7 1021.8 1026.4 1019.8 1015.2 1011.6 1011.9 1013.7 ****** ****** ****** 1021.2 ****** MAX. QFF PRESSURE IN HPA 1041.9 1028.9 1038.5 1031.0 1027.6 1020.5 1019.9 1019.8 ****** ****** ****** 1035.9 ****** DAY 23 12 2 4 17 2 1 3 ** ** ** 16 MIN. QFF PRESSURE IN HPA 1011.5 1010.8 1016.4 1009.7 1000.8 1003.2 1002.5 1005.0 ****** ****** ****** 1007.0 ****** DAY 14 3 31 30 3 12 9 14 ** ** ** 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.3 1.2 2.3 6.8 15.2 17.5 17.5 17.2 13.2 5.2 4.6 0.9 8.6 MINIMUN AIR TEMPERATURE (C) -3.0 -4.1 -2.3 -0.4 7.1 9.0 9.3 11.2 7.8 2.4 -1.2 -4.6 2.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 11 15 14 8 0 0 0 0 1 0 6 14 69 DAYS WITH FREEZING MIN.<= 0 27 26 23 19 3 0 0 0 1 9 25 22 155 TEMPERATURE RECORDS LOWEST(C) -12.6 -13.0 -8.0 -8.0 -1.0 5.5 4.2 3.0 -4.4 -3.0 -11.6 -27.0 -27.0 DAY 12 7 22 21 1 23 11 30 24 27 30 31 MAXIMUM AIR TEMPERATURE (C) 9.4 7.9 8.7 15.2 23.8 25.4 25.0 23.9 20.1 9.3 12.9 7.3 15.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 4 3 3 5 1 2 0 0 18 DAYS WITH MAXIMUM TEMP. <= 0 0 5 1 1 0 0 0 0 0 0 0 4 11 TEMPERATURE RECORDS HIGHEST(C) 18.2 18.0 17.2 24.2 31.2 35.0 36.0 32.5 32.0 30.4 19.6 14.5 36.0 DAY 31 3 8 24 9 2 6 3 5 2 6 4 DIF. BETWEEN (MAX.-MIN.) (C) 12.4 12.0 11.0 15.6 16.7 16.4 15.7 12.7 12.3 6.9 14.1 11.9 13.1 MEAN DAILY TEMP. (MDT) (C) 3.2 1.9 3.2 7.4 15.5 17.2 17.2 17.6 14.0 5.9 5.9 1.3 9.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.9 4.9 3.4 1.5 0.0 0.0 0.0 0.0 12.8 HEATING DEG. DAYS(BASE 18 0C) 445.6 450.2 459.5 318.1 98.4 41.8 42.8 46.2 124.8 375.9 363.9 474.8 3242.0 DEWPOINT (MEAN C) -5.7 -3.2 -2.7 -0.6 5.5 7.1 8.4 10.9 8.7 3.2 -1.9 -4.5 2.1 MIXING RATIO (G/KG) 2.94 3.57 3.72 4.40 6.81 7.47 8.24 9.76 8.42 5.64 3.96 3.40 5.69 VAPOUR PRESSURE (HPA) 4.09 4.96 5.14 6.09 9.40 10.31 11.34 13.41 11.63 7.86 5.51 4.72 7.87 SATURATION DEF. (HPA) 3.57 2.26 2.59 4.94 9.29 10.99 9.81 7.25 4.39 1.56 3.90 2.57 5.26 RELATIVE HUMIDITY (MEAN %) 60 77 75 66 60 55 60 71 79 90 69 71 69 RELATIVE HUMIDITY (MAX. %) 78 93 94 92 84 81 85 91 98 96 92 88 89 RELATIVE HUMIDITY (MIN. %) 40 55 50 40 36 35 38 47 51 76 43 54 47 RELATIVE HUMIDITY (MEAN% 03UTC) 69 85 88 86 78 75 79 86 92 95 85 77 83 RELATIVE HUMIDITY (MEAN% 09UTC) 47 65 57 50 40 37 42 50 56 78 47 63 53 RELATIVE HUMIDITY (MEAN% 15UTC) 55 71 71 57 53 51 53 69 79 93 62 67 65 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 0.0 21.3 21.9 19.5 12.5 3.2 8.0 16.0 5.6 81.5 20.2 16.2 225.9 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 1 0 3 1 0 5 DAYS WITH PRECIPITATION >= 5 0 1 2 1 0 0 1 1 0 5 1 1 13 DAYS WITH PRECIPITATION >= 1 0 8 4 6 4 1 1 3 2 13 1 5 48 DAYS WITH PRECIPITATION 1 10 9 8 7 2 1 9 10 18 3 11 89 GREATEST DAILY PRECIPITATION 0.0 8.6 7.6 7.8 4.0 3.0 8.0 12.0 2.8 20.8 20.0 5.0 20.8 DAY ** 21 28 15 12 20 3 28 1 5 7 27 DAY WITH THUNDER STORM 0 0 3 0 4 2 0 2 1 2 0 0 14 DAYS WITH SNOW OR SLEET 1 9 8 3 0 0 0 0 0 5 3 8 37 DAYS WITH DUST 0 1 1 1 1 3 1 0 0 1 1 0 10 WIND DIRECTION (PREVAILING) 225 225 90 90 90 90 90 90 90 90 225 225 90 PREVAILING WIND SPEED(KNOTS) 27.5 18.9 14.8 18.3 15.6 19.5 18.9 14.8 15.2 15.2 16.0 22.8 16.4 PREVAILING WIND PERCENT 50.8 20.5 33.1 24.2 29.4 51.7 58.5 52.4 48.7 52.0 16.7 37.6 34.1 CALMS PERCENT OF WIND 23.8 47.8 31.9 46.3 39.5 42.9 36.3 43.1 48.3 41.5 49.2 30.0 39.9 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 238 229 240 237 2888 VECTOR WIND DIRECTION (MEAN) 212 191 159 143 124 85 86 84 84 86 219 199 129 VECTOR WIND MAGNITUDE(KNOTS) 14.5 3.3 4.3 2.1 2.5 9.9 10.9 8.0 7.4 7.6 2.1 8.7 3.8 WIND STEADINESES (MEAN %) 78.4 38.8 37.7 21.4 26.9 90.8 94.8 97.6 96.1 90.5 36.2 62.6 36.9 WIND SPEED (MEAN KNOTS) 18.5 8.5 11.4 9.8 9.3 10.9 11.5 8.2 7.7 8.4 5.8 13.9 10.3 FASTEST WIND DIRECTION 210 210 220 240 220 70 90 80 80 90 210 210 240 FASTEST WIND SPEED (KNOTS) 54 45 51 60 41 35 35 33 33 43 51 45 60 DAY 9 25 24 19 2 21 9 16 22 3 6 12 DAYS WITH SKY CLEAR (0-2)/8 7 6 2 8 7 19 23 14 9 2 13 7 117 DAYS WITH P.CLOUDY (3-6)/8 21 10 19 14 17 10 5 7 11 9 13 14 150 DAYS WITH CLOUDY (7-8)/8 3 12 10 8 7 1 3 10 10 20 4 10 98 DAYS WITH VISIBILITY =< 2 KM 6 11 14 13 8 7 7 11 19 21 9 9 135 DURATION OF SUNSHINE HOURS 171.3 120.5 155.7 216.8 234.1 291.1 330.0 219.4 181.9 96.5 178.6 116.4 2312.3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 869.5 869.2 864.6 868.4 869.2 868.6 868.4 868.6 871.6 875.4 873.1 868.9 869.6 MAX. QFE PRESSURE IN HPA 881.3 879.8 875.9 877.1 876.9 873.4 874.5 876.9 877.0 882.2 885.5 882.8 885.5 DAY-HOUR 20-18 1- 0 23- 3 30- 6 13- 6 28- 3 10-21 8- 6 19-18 17- 6 30- 6 1- 0 MIN. QFE PRESSURE IN HPA 859.4 857.0 851.8 855.5 861.5 863.1 860.0 860.0 864.5 868.9 861.0 859.0 851.8 DAY-HOUR 2-12 10-12 19-12 19-12 23-12 2-12 6-12 18-15 5-12 2-15 7- 3 23-12 MEAN QNH PRESSURE IN HPA 1020.2 1019.9 1014.6 1018.9 1019.8 1019.2 1019.0 1019.1 1022.6 1026.9 1024.4 1019.6 1020.3 MAX. QNH PRESSURE IN HPA 1033.6 1031.9 1027.5 1028.9 1028.6 1024.7 1025.9 1028.6 1028.8 1034.7 1038.4 1035.4 1038.4 DAY-HOUR 20-18 1- 0 23- 3 30- 6 13- 6 28- 3 10-21 8- 6 19-18 17- 6 30- 6 1- 0 MIN. QNH PRESSURE IN HPA 1008.7 1006.0 1000.1 1004.3 1011.1 1012.9 1009.4 1009.4 1014.5 1019.5 1010.5 1008.3 1000.1 DAY-HOUR 2-12 10-12 19-12 19-12 23-12 2-12 6-12 18-15 5-12 2-15 7- 3 23-12 MEAN QFF PRESSURE IN HPA 1022.7 1023.0 1016.8 1018.7 1014.7 1012.7 1012.4 1012.6 1018.5 1028.1 1025.5 1022.6 1019.0 MAX. QFF PRESSURE IN HPA 1039.8 1038.0 1033.4 1030.9 1026.1 1020.1 1022.9 1021.3 1031.2 1037.1 1047.1 1044.9 1047.1 DAY-HOUR 20-15 1- 6 23- 3 6- 6 13- 9 6- 6 11- 3 8- 3 24- 3 26-18 30- 6 1- 3 MIN. QFF PRESSURE IN HPA 1009.9 1006.8 999.5 999.8 1002.2 1002.2 999.7 1002.8 1006.1 1015.4 1004.7 1006.8 999.5 DAY-HOUR 2-12 10-12 19-12 19-12 23- 9 2- 9 6-12 18- 9 5-12 2-15 6-21 23-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 869.5 869.5 864.3 868.5 869.3 868.6 868.7 868.6 871.8 875.3 873.1 869.3 869.7 MAX. QFE PRESSURE IN HPA 881.3 879.8 875.0 876.0 875.0 873.1 874.2 875.8 876.0 881.0 884.7 882.8 884.7 DAY 21 1 23 30 13 28 11 8 24 16 30 1 MIN. QFE PRESSURE IN HPA 861.1 858.5 855.2 859.3 862.0 864.0 863.0 862.4 866.5 871.0 861.5 859.0 855.2 DAY 7 9 14 20 23 2 3 18 22 24 7 24 MEAN QNH PRESSURE IN HPA 1020.2 1020.2 1014.3 1019.0 1020.0 1019.2 1019.4 1019.2 1022.9 1026.8 1024.3 1020.0 1020.5 MAX. QNH PRESSURE IN HPA 1033.6 1031.9 1026.5 1027.6 1026.5 1024.3 1025.6 1027.4 1027.6 1033.3 1037.5 1035.4 1037.5 DAY 21 1 23 30 13 28 11 8 24 16 30 1 MIN. QNH PRESSURE IN HPA 1010.7 1007.7 1003.9 1008.6 1011.7 1014.0 1012.8 1012.1 1016.8 1021.9 1011.1 1008.3 1003.9 DAY 7 9 14 20 23 2 3 18 22 24 7 24 MEAN QFF PRESSURE IN HPA 1022.1 1022.7 1016.0 1018.6 1014.9 1013.0 1013.0 1012.5 1018.4 1027.9 1024.5 1022.6 1018.9 MAX. QFF PRESSURE IN HPA 1039.0 1034.8 1031.1 1029.8 1022.9 1018.4 1022.4 1020.2 1028.9 1035.5 1044.2 1041.6 1044.2 DAY 21 7 23 1 14 6 11 28 24 28 30 1 MIN. QFF PRESSURE IN HPA 1012.1 1007.3 1004.4 1004.8 1003.0 1005.1 1003.4 1004.5 1009.3 1021.9 1005.9 1008.6 1003.0 DAY 10 9 19 20 24 2 7 15 6 24 7 24 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 869.4 869.4 864.4 868.7 869.8 869.2 869.1 869.3 872.0 875.2 873.0 869.0 869.9 MAX. QFE PRESSURE IN HPA 881.0 878.8 875.9 876.8 875.6 873.4 874.2 876.3 876.0 881.2 884.7 882.5 884.7 DAY 21 1 23 30 13 28 11 8 24 16 30 1 MIN. QFE PRESSURE IN HPA 861.2 860.4 854.8 858.1 863.1 864.0 863.0 863.4 867.1 869.2 861.0 860.0 854.8 DAY 10 9 19 19 23 2 8 18 22 4 7 24 MEAN QNH PRESSURE IN HPA 1020.1 1020.1 1014.4 1019.3 1020.5 1019.9 1019.7 1019.9 1023.1 1026.8 1024.2 1019.6 1020.6 MAX. QNH PRESSURE IN HPA 1033.3 1030.8 1027.5 1028.5 1027.2 1024.7 1025.6 1028.0 1027.6 1033.5 1037.5 1035.0 1037.5 DAY 21 1 23 30 13 28 11 8 24 16 30 1 MIN. QNH PRESSURE IN HPA 1010.8 1009.9 1003.5 1007.2 1012.9 1014.0 1012.8 1013.3 1017.5 1019.9 1010.5 1009.4 1003.5 DAY 10 9 19 19 23 2 8 18 22 4 7 24 MEAN QFF PRESSURE IN HPA 1023.4 1023.8 1017.4 1020.2 1016.4 1014.7 1014.4 1014.3 1020.0 1027.9 1026.3 1023.3 1020.2 MAX. QFF PRESSURE IN HPA 1039.4 1037.5 1033.4 1030.5 1024.3 1020.0 1022.9 1021.3 1031.2 1036.0 1046.8 1044.9 1046.8 DAY 21 1 23 1 6 6 11 8 24 28 30 1 MIN. QFF PRESSURE IN HPA 1011.3 1010.1 1004.0 1003.5 1004.6 1004.6 1006.0 1005.7 1012.3 1018.9 1008.5 1010.4 1003.5 DAY 10 9 19 19 24 2 7 15 6 3 3 24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 870.5 870.3 865.3 869.0 870.1 869.4 869.3 869.5 872.4 876.1 873.9 869.9 870.5 MAX. QFE PRESSURE IN HPA 881.0 878.7 875.3 877.1 876.9 873.3 873.8 876.9 876.2 882.2 885.5 882.8 885.5 DAY 21 1 23 30 13 30 11 8 23 17 30 1 MIN. QFE PRESSURE IN HPA 861.9 860.5 854.8 857.4 863.2 863.6 863.0 863.2 867.6 870.2 862.4 862.0 854.8 DAY 10 10 19 19 23 2 6 18 5 4 3 23 MEAN QNH PRESSURE IN HPA 1021.4 1021.2 1015.4 1019.7 1020.9 1020.1 1020.0 1020.2 1023.6 1027.7 1025.3 1020.7 1021.3 MAX. QNH PRESSURE IN HPA 1033.3 1030.7 1026.8 1028.9 1028.6 1024.5 1025.1 1028.6 1027.8 1034.7 1038.4 1035.4 1038.4 DAY 21 1 23 30 13 30 11 8 23 17 30 1 MIN. QNH PRESSURE IN HPA 1011.6 1010.0 1003.5 1006.4 1013.0 1013.5 1012.8 1013.0 1018.1 1021.0 1012.1 1011.7 1003.5 DAY 10 10 19 19 23 2 6 18 5 4 3 23 MEAN QFF PRESSURE IN HPA 1024.3 1024.9 1017.8 1019.4 1015.4 1013.1 1013.0 1013.7 1019.5 1029.3 1027.0 1024.2 1020.1 MAX. QFF PRESSURE IN HPA 1039.2 1038.0 1032.9 1030.9 1025.9 1020.1 1020.3 1020.8 1027.6 1036.6 1047.1 1043.7 1047.1 DAY 21 1 23 6 13 6 11 28 23 28 30 1 MIN. QFF PRESSURE IN HPA 1012.0 1010.8 1003.5 1001.9 1004.3 1003.8 1005.2 1005.8 1013.4 1023.3 1008.0 1011.0 1001.9 DAY 10 10 19 19 24 2 6 15 5 24 3 23 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 869.5 869.6 864.7 868.3 869.2 868.7 868.3 868.4 871.5 875.4 873.0 868.9 869.6 MAX. QFE PRESSURE IN HPA 880.3 876.8 874.9 876.5 876.2 872.5 874.0 875.8 875.8 882.0 883.9 880.4 883.9 DAY 20 6 23 30 13 30 10 8 23 16 30 1 MIN. QFE PRESSURE IN HPA 860.8 858.8 852.9 856.2 862.1 863.2 861.5 861.5 866.2 869.5 863.3 859.2 852.9 DAY 2 10 19 19 23 2 6 18 5 4 3 23 MEAN QNH PRESSURE IN HPA 1020.3 1020.3 1014.7 1018.9 1019.8 1019.3 1018.9 1019.0 1022.5 1027.0 1024.1 1019.6 1020.4 MAX. QNH PRESSURE IN HPA 1032.5 1028.5 1026.4 1028.2 1027.8 1023.6 1025.3 1027.4 1027.4 1034.4 1036.6 1032.6 1036.6 DAY 20 6 23 30 13 30 10 8 23 16 30 1 MIN. QNH PRESSURE IN HPA 1010.3 1008.0 1001.3 1005.1 1011.8 1013.0 1011.1 1011.1 1016.5 1020.2 1013.2 1008.5 1001.3 DAY 2 10 19 19 23 2 6 18 5 4 3 23 MEAN QFF PRESSURE IN HPA 1022.0 1023.0 1016.3 1018.0 1014.1 1012.0 1011.7 1011.7 1017.6 1028.0 1024.4 1022.0 1018.4 MAX. QFF PRESSURE IN HPA 1038.5 1034.4 1029.4 1028.3 1026.1 1017.5 1020.4 1019.3 1026.5 1036.0 1043.4 1037.9 1043.4 DAY 20 6 23 6 13 6 10 27 23 28 30 1 MIN. QFF PRESSURE IN HPA 1010.6 1009.0 1000.3 1000.4 1002.2 1002.2 1001.6 1002.8 1008.5 1020.6 1008.6 1007.1 1000.3 DAY 10 10 19 19 23 2 6 18 5 24 3 23 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 868.5 868.3 863.9 867.3 868.0 867.7 867.4 867.4 870.5 874.8 872.3 868.2 868.7 MAX. QFE PRESSURE IN HPA 880.0 876.3 873.2 874.8 874.5 871.2 873.7 874.2 874.8 881.0 883.1 879.0 883.1 DAY 20 6 22 30 13 30 10 8 23 16 30 1 MIN. QFE PRESSURE IN HPA 859.4 857.0 851.8 855.5 861.5 863.1 860.0 860.4 864.5 869.0 862.5 859.0 851.8 DAY 2 10 19 19 23 2 6 18 5 2 6 23 MEAN QNH PRESSURE IN HPA 1019.1 1018.8 1013.8 1017.7 1018.5 1018.2 1017.8 1017.9 1021.3 1026.2 1023.3 1018.7 1019.3 MAX. QNH PRESSURE IN HPA 1032.2 1028.0 1024.4 1026.2 1025.9 1022.2 1025.0 1025.6 1026.2 1033.3 1035.7 1031.0 1035.7 DAY 20 6 22 30 13 30 10 8 23 16 30 1 MIN. QNH PRESSURE IN HPA 1008.7 1006.0 1000.1 1004.3 1011.1 1012.9 1009.4 1009.9 1014.5 1019.6 1012.2 1008.3 1000.1 DAY 2 10 19 19 23 2 6 18 5 2 6 23 MEAN QFF PRESSURE IN HPA 1020.8 1021.3 1015.5 1017.0 1013.3 1011.7 1011.3 1011.0 1016.7 1027.4 1023.6 1021.3 1017.6 MAX. QFF PRESSURE IN HPA 1038.0 1034.0 1029.8 1026.7 1022.7 1016.8 1019.7 1019.7 1025.6 1035.3 1041.9 1035.4 1041.9 DAY 20 6 22 5 13 30 10 27 23 26 30 1 MIN. QFF PRESSURE IN HPA 1009.9 1006.8 999.5 999.8 1002.8 1005.8 999.7 1002.9 1006.1 1021.1 1007.3 1006.8 999.5 DAY 2 10 19 19 23 2 6 18 5 24 6 23 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 869.3 868.4 864.3 867.5 868.1 867.5 867.3 867.6 870.8 875.1 873.0 868.6 869.0 MAX. QFE PRESSURE IN HPA 881.0 876.4 873.9 873.7 874.0 871.1 873.7 874.0 875.7 881.4 883.5 879.2 883.5 DAY 20 6 22 30 13 22 10 7 19 16 29 1 MIN. QFE PRESSURE IN HPA 860.4 857.0 854.5 857.0 861.6 863.4 860.0 860.0 864.8 868.9 862.5 859.5 854.5 DAY 2 10 19 19 23 9 6 18 5 2 6 23 MEAN QNH PRESSURE IN HPA 1020.0 1019.0 1014.3 1017.9 1018.6 1018.0 1017.7 1018.0 1021.6 1026.6 1024.2 1019.2 1019.6 MAX. QNH PRESSURE IN HPA 1033.3 1028.1 1025.2 1025.0 1025.3 1022.0 1025.0 1025.3 1027.3 1033.8 1036.2 1031.3 1036.2 DAY 20 6 22 30 13 22 10 7 19 16 29 1 MIN. QNH PRESSURE IN HPA 1009.9 1006.0 1003.1 1006.0 1011.2 1013.3 1009.4 1009.4 1014.9 1019.5 1012.2 1008.8 1003.1 DAY 2 10 19 19 23 9 6 18 5 2 6 23 MEAN QFF PRESSURE IN HPA 1023.4 1022.4 1017.3 1018.6 1014.4 1012.6 1012.1 1012.3 1018.3 1027.8 1026.3 1022.6 1019.0 MAX. QFF PRESSURE IN HPA 1039.8 1034.7 1031.8 1028.0 1022.6 1017.4 1020.7 1020.1 1028.0 1036.1 1045.8 1040.7 1045.8 DAY 20 6 22 5 13 5 10 27 23 27 30 1 MIN. QFF PRESSURE IN HPA 1011.7 1008.2 1004.6 1002.4 1003.7 1006.6 1000.8 1004.6 1008.2 1015.4 1009.3 1008.2 1000.8 DAY 2 25 19 19 23 18 6 18 5 2 6 23 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 869.7 869.2 864.9 868.7 869.5 868.7 868.5 868.8 872.0 875.9 873.6 868.8 869.9 MAX. QFE PRESSURE IN HPA 881.3 876.9 875.2 874.6 875.0 872.3 874.0 875.1 877.0 881.6 884.4 879.6 884.4 DAY 20 6 22 29 13 27 10 7 19 16 29 1 MIN. QFE PRESSURE IN HPA 860.4 860.4 855.5 858.4 862.0 865.6 862.0 863.0 865.4 870.8 861.9 859.0 855.5 DAY 6 8 13 19 22 2 6 17 5 23 6 23 MEAN QNH PRESSURE IN HPA 1020.5 1019.8 1015.0 1019.3 1020.2 1019.3 1019.1 1019.5 1023.0 1027.5 1024.9 1019.4 1020.6 MAX. QNH PRESSURE IN HPA 1033.6 1028.6 1026.7 1026.0 1026.5 1023.4 1025.3 1026.6 1028.8 1034.0 1037.2 1031.7 1037.2 DAY 20 6 22 29 13 27 10 7 19 16 29 1 MIN. QNH PRESSURE IN HPA 1009.9 1009.9 1004.3 1007.6 1011.7 1015.8 1011.7 1012.8 1015.5 1021.7 1011.6 1008.3 1004.3 DAY 6 8 13 19 22 2 6 17 5 23 6 23 MEAN QFF PRESSURE IN HPA 1023.4 1023.5 1017.5 1019.0 1014.7 1012.2 1012.0 1012.9 1019.0 1029.0 1026.7 1023.2 1019.4 MAX. QFF PRESSURE IN HPA 1039.6 1036.9 1031.6 1029.8 1023.9 1017.7 1021.2 1021.0 1029.9 1037.1 1045.3 1038.9 1045.3 DAY 20 6 22 5 13 5 10 27 23 26 29 1 MIN. QFF PRESSURE IN HPA 1012.1 1010.1 1005.9 1003.5 1003.9 1007.1 1003.3 1005.1 1009.5 1021.8 1008.6 1008.3 1003.3 DAY 2 8 19 19 23 2 6 18 5 23 6 23 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 869.7 869.1 865.0 868.9 869.4 869.0 868.9 869.0 872.1 875.5 873.5 868.7 869.9 MAX. QFE PRESSURE IN HPA 881.3 876.6 875.2 875.5 875.0 873.2 874.5 876.0 876.8 881.6 884.7 879.4 884.7 DAY 20 21 22 29 12 27 10 7 19 16 29 1 MIN. QFE PRESSURE IN HPA 860.7 860.2 855.3 859.2 862.0 865.0 863.0 863.0 867.0 870.6 861.1 859.0 855.3 DAY 6 8 13 19 22 1 6 17 21 30 6 23 MEAN QNH PRESSURE IN HPA 1020.4 1019.8 1015.1 1019.5 1020.1 1019.6 1019.5 1019.6 1023.2 1027.1 1024.8 1019.3 1020.7 MAX. QNH PRESSURE IN HPA 1033.6 1028.3 1026.7 1027.0 1026.5 1024.4 1025.9 1027.6 1028.5 1034.0 1037.5 1031.5 1037.5 DAY 20 21 22 29 12 27 10 7 19 16 29 1 MIN. QNH PRESSURE IN HPA 1010.2 1009.6 1004.0 1008.5 1011.7 1015.1 1012.8 1012.8 1017.4 1021.5 1010.7 1008.3 1004.0 DAY 6 8 13 19 22 1 6 17 21 30 6 23 MEAN QFF PRESSURE IN HPA 1022.2 1022.5 1016.7 1018.6 1014.4 1012.3 1012.3 1012.3 1018.4 1027.8 1025.2 1022.0 1018.7 MAX. QFF PRESSURE IN HPA 1039.1 1035.9 1030.5 1029.2 1024.2 1018.5 1022.4 1020.9 1029.8 1035.8 1045.5 1035.9 1045.5 DAY 20 6 22 5 13 5 10 27 23 27 29 1 MIN. QFF PRESSURE IN HPA 1012.5 1009.0 1007.3 1004.5 1003.5 1006.0 1002.1 1003.6 1008.4 1021.3 1004.7 1008.1 1002.1 DAY 2 8 18 19 22 1 6 14 5 19 6 23 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -5.2 -2.8 3.8 8.5 11.1 17.0 18.0 16.3 13.6 10.4 5.5 0.7 8.1 MINIMUN AIR TEMPERATURE (C) -10.9 -7.7 -1.7 2.8 5.2 9.1 11.3 12.2 8.4 6.4 -0.1 -5.2 2.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 27 23 9 2 0 0 0 0 0 0 9 18 88 DAYS WITH FREEZING MIN.<= 0 31 25 23 9 3 0 0 0 0 0 17 25 133 TEMPERATURE RECORDS LOWEST(C) -22.4 -20.4 -6.4 -5.4 -1.5 5.4 4.0 6.4 3.0 0.4 -7.0 -26.8 -26.8 DAY 20 7 18 6 2 1 28 31 16 2 15 29 MAXIMUM AIR TEMPERATURE (C) -0.1 2.3 11.0 15.3 18.2 25.0 24.4 21.3 20.0 16.3 12.7 8.2 14.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 5 2 0 3 0 0 0 10 DAYS WITH MAXIMUM TEMP. <= 0 18 12 1 0 0 0 0 0 0 0 0 5 36 TEMPERATURE RECORDS HIGHEST(C) 5.0 12.0 18.5 21.5 26.8 35.0 33.8 27.0 33.0 25.6 21.0 17.0 35.0 DAY 6 29 20 21 18 14 13 28 8 26 7 11 DIF. BETWEEN (MAX.-MIN.) (C) 10.8 10.0 12.7 12.5 13.0 15.9 13.1 9.1 11.6 9.9 12.8 13.4 12.1 MEAN DAILY TEMP. (MDT) (C) -5.5 -2.7 4.7 9.1 11.7 17.1 17.9 16.8 14.2 11.4 6.3 1.5 8.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 4.2 5.7 0.0 0.2 0.0 0.0 0.0 10.1 HEATING DEG. DAYS(BASE 18 0C) 727.5 599.5 413.4 268.4 195.3 48.9 28.5 43.4 118.4 206.6 351.2 510.4 3511.5 DEWPOINT (MEAN C) -8.1 -7.3 -2.8 2.7 6.5 10.3 11.7 12.5 10.1 6.8 -2.0 -6.0 2.9 MIXING RATIO (G/KG) 2.58 2.69 3.71 5.61 7.23 9.24 10.26 10.73 9.12 7.30 4.05 3.02 6.29 VAPOUR PRESSURE (HPA) 3.59 3.73 5.12 7.75 9.97 12.67 14.05 14.71 12.58 10.12 5.63 4.18 8.67 SATURATION DEF. (HPA) 0.92 1.71 3.44 4.14 4.36 7.84 7.46 4.25 3.77 3.03 4.06 3.17 4.01 RELATIVE HUMIDITY (MEAN %) 81 74 67 72 78 69 70 81 84 82 65 66 74 RELATIVE HUMIDITY (MAX. %) 89 87 88 93 97 94 92 96 98 95 89 85 92 RELATIVE HUMIDITY (MIN. %) 70 59 43 45 51 42 48 60 61 60 40 45 52 RELATIVE HUMIDITY (MEAN% 03UTC) 81 81 81 89 91 90 87 92 94 92 78 77 86 RELATIVE HUMIDITY (MEAN% 09UTC) 80 64 52 48 58 47 50 65 64 64 46 54 58 RELATIVE HUMIDITY (MEAN% 15UTC) 80 70 62 68 74 63 64 79 85 86 63 59 71 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 21.0 11.9 42.0 72.8 23.6 17.4 8.6 26.8 5.5 14.0 36.2 24.8 304.6 DAYS WITH PRECIPITATION >=10 0 0 0 3 0 0 0 1 0 0 2 1 7 DAYS WITH PRECIPITATION >= 5 2 0 4 6 2 0 1 2 0 0 3 2 22 DAYS WITH PRECIPITATION >= 1 7 6 9 9 6 5 2 5 3 4 4 4 64 DAYS WITH PRECIPITATION 11 12 12 17 8 11 5 15 12 8 10 6 127 GREATEST DAILY PRECIPITATION 6.0 3.0 7.6 16.0 9.1 4.4 6.0 12.4 1.2 4.8 17.4 11.0 17.4 DAY 29 3 27 30 30 19 7 4 12 16 10 27 DAY WITH THUNDER STORM 0 0 2 1 5 11 2 6 1 1 0 0 29 DAYS WITH SNOW OR SLEET 11 9 7 5 0 0 0 0 0 0 2 3 37 DAYS WITH DUST 4 0 0 0 1 0 0 0 0 0 2 0 7 WIND DIRECTION (PREVAILING) *** *** 90 90 90 90 90 90 90 90 225 225 *** PREVAILING WIND SPEED(KNOTS) **** **** 13.2 14.7 16.4 15.5 14.6 13.5 13.9 14.0 17.2 16.2 **** PREVAILING WIND PERCENT ***** ***** 19.9 26.7 40.7 35.4 58.9 61.7 50.8 41.5 28.8 32.0 ***** CALMS PERCENT OF WIND ***** ***** 37.3 37.1 39.1 42.5 32.7 32.3 38.8 39.5 29.2 34.8 ***** NO. OF WIND OBSERVATION 5 2 166 240 248 240 248 248 240 248 240 247 2372 VECTOR WIND DIRECTION (MEAN) *** *** 197 153 91 90 84 86 86 104 200 220 *** VECTOR WIND MAGNITUDE(KNOTS) **** **** 2.0 3.2 5.7 5.0 8.8 8.4 7.0 4.8 4.5 5.2 **** WIND STEADINESES (MEAN %) ***** ***** 23.0 33.7 64.0 65.8 95.7 95.5 89.7 58.5 42.9 63.4 ***** WIND SPEED (MEAN KNOTS) **** **** 8.7 9.5 8.9 7.6 9.2 8.8 7.8 8.2 10.5 8.2 **** FASTEST WIND DIRECTION *** *** 90 240 210 80 90 90 90 240 260 210 *** FASTEST WIND SPEED (KNOTS) *** *** 39 51 51 39 39 31 39 43 51 43 *** DAY ** ** 16 15 9 29 14 20 23 20 8 6 DAYS WITH SKY CLEAR (0-2)/8 5 12 7 6 6 15 19 6 11 4 9 12 112 DAYS WITH P.CLOUDY (3-6)/8 15 9 16 18 22 14 11 14 10 18 18 15 180 DAYS WITH CLOUDY (7-8)/8 11 8 8 6 3 1 1 11 9 9 3 4 74 DAYS WITH VISIBILITY =< 2 KM 19 8 11 9 11 7 3 11 15 17 13 9 133 DURATION OF SUNSHINE HOURS 66.8 147.9 177.2 194.3 247.7 297.6 310.8 203.1 198.6 159.6 181.9 162.4 2347.9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 869.2 868.8 864.6 868.9 868.7 865.9 866.8 868.1 870.8 872.6 870.0 867.6 868.5 MAX. QFE PRESSURE IN HPA 879.0 880.8 875.8 881.0 877.4 871.2 871.8 875.1 878.0 880.0 880.5 875.7 881.0 DAY-HOUR 9- 6 6- 6 16-21 8- 6 5- 6 9-18 27- 6 21- 6 21- 6 16- 6 5-15 21-18 MIN. QFE PRESSURE IN HPA 858.0 854.1 851.0 858.7 858.1 857.6 862.0 859.6 863.0 861.8 860.2 848.2 848.2 DAY-HOUR 31-18 1-12 4-15 30-21 1- 0 15-12 8-15 29-12 4-12 30-12 20- 0 26- 0 MEAN QNH PRESSURE IN HPA 1019.9 1019.4 1014.7 1019.5 1019.3 1016.1 1017.1 1018.6 1021.7 1023.7 1020.8 1018.1 1019.1 MAX. QNH PRESSURE IN HPA 1031.0 1033.1 1027.4 1033.3 1029.2 1022.2 1022.8 1026.6 1029.9 1032.2 1032.7 1027.3 1033.3 DAY-HOUR 9- 6 6- 6 16-21 8- 6 5- 6 9-18 27- 6 21- 6 21- 6 16- 6 5-15 21-18 MIN. QNH PRESSURE IN HPA 1007.1 1002.7 999.1 1007.9 1007.2 1006.7 1011.7 1008.9 1012.8 1011.4 1009.6 996.0 996.0 DAY-HOUR 31-18 1-12 4-15 30-21 1- 0 15-12 8-15 29-12 4-12 30-12 20- 0 26- 0 MEAN QFF PRESSURE IN HPA 1027.0 1025.0 1015.9 1018.2 1016.3 1009.6 1010.0 1012.3 1017.2 1021.2 1021.3 1021.4 1018.0 MAX. QFF PRESSURE IN HPA 1045.0 1047.5 1031.8 1037.0 1030.6 1017.4 1017.7 1021.6 1026.9 1033.7 1036.8 1042.2 1047.5 DAY-HOUR 2-18 6- 6 17- 6 8- 6 5- 3 27- 3 27- 3 21- 6 30-18 16- 6 5-15 29- 6 MIN. QFF PRESSURE IN HPA 1007.9 1002.3 998.7 1004.2 1002.9 997.2 1005.0 1001.8 1003.2 1006.3 1007.0 996.6 996.6 DAY-HOUR 31-18 29-21 3- 6 30-21 1- 0 15-12 8-21 29- 9 8-21 30- 9 20- 0 26- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 869.1 868.3 864.2 868.5 868.6 866.2 866.8 868.0 870.8 872.6 870.0 867.5 868.4 MAX. QFE PRESSURE IN HPA 878.0 879.0 875.8 877.5 876.0 870.3 871.0 874.0 875.6 879.0 880.0 874.7 880.0 DAY 10 6 17 9 5 8 27 21 30 16 6 5 MIN. QFE PRESSURE IN HPA 860.0 855.9 854.2 860.9 858.1 860.6 863.3 861.5 863.5 864.8 860.2 848.2 848.2 DAY 31 2 5 23 1 15 1 29 9 30 20 26 MEAN QNH PRESSURE IN HPA 1019.8 1018.9 1014.2 1019.1 1019.2 1016.4 1017.1 1018.5 1021.7 1023.7 1020.8 1018.0 1019.0 MAX. QNH PRESSURE IN HPA 1029.9 1031.0 1027.4 1029.3 1027.6 1021.1 1021.9 1025.3 1027.2 1031.0 1032.2 1026.1 1032.2 DAY 10 6 17 9 5 8 27 21 30 16 6 5 MIN. QNH PRESSURE IN HPA 1009.4 1004.7 1002.8 1010.4 1007.2 1010.1 1013.2 1011.1 1013.4 1014.9 1009.6 996.0 996.0 DAY 31 2 5 23 1 15 1 29 9 30 20 26 MEAN QFF PRESSURE IN HPA 1026.5 1023.9 1015.0 1017.5 1016.3 1010.3 1010.2 1012.2 1017.0 1021.0 1020.9 1020.3 1017.6 MAX. QFF PRESSURE IN HPA 1039.4 1041.4 1028.8 1031.7 1029.4 1016.6 1017.4 1019.1 1024.3 1032.3 1033.5 1039.8 1041.4 DAY 10 7 17 9 5 1 27 21 30 16 6 29 MIN. QFF PRESSURE IN HPA 1012.8 1004.9 1001.6 1005.1 1002.9 999.3 1005.6 1003.7 1003.3 1009.2 1007.0 996.6 996.6 DAY 31 2 3 23 1 15 15 29 9 20 20 26 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 868.8 868.5 864.5 869.0 868.8 866.6 867.2 868.4 871.3 872.8 870.1 867.6 868.6 MAX. QFE PRESSURE IN HPA 877.4 879.0 875.8 878.6 876.6 871.0 871.2 874.0 877.0 879.6 880.0 874.2 880.0 DAY 9 6 17 8 5 27 31 21 21 16 6 5 MIN. QFE PRESSURE IN HPA 860.0 856.2 853.7 861.8 859.8 861.0 863.9 861.7 864.8 863.8 861.8 850.0 850.0 DAY 31 1 3 23 1 15 15 29 9 30 20 26 MEAN QNH PRESSURE IN HPA 1019.4 1019.1 1014.5 1019.7 1019.5 1016.9 1017.6 1019.0 1022.2 1024.0 1021.0 1018.0 1019.2 MAX. QNH PRESSURE IN HPA 1029.2 1031.0 1027.4 1030.6 1028.3 1021.9 1022.2 1025.3 1028.8 1031.7 1032.2 1025.6 1032.2 DAY 9 6 17 8 5 27 31 21 21 16 6 5 MIN. QNH PRESSURE IN HPA 1009.4 1005.1 1002.2 1011.4 1009.2 1010.5 1013.8 1011.3 1014.9 1013.7 1011.4 998.0 998.0 DAY 31 1 3 23 1 15 15 29 9 30 20 26 MEAN QFF PRESSURE IN HPA 1027.1 1025.2 1016.5 1019.3 1017.3 1011.4 1011.4 1013.4 1018.7 1022.4 1022.4 1021.9 1018.9 MAX. QFF PRESSURE IN HPA 1040.4 1044.5 1031.6 1033.3 1030.6 1017.4 1017.7 1020.1 1025.4 1033.3 1033.8 1040.6 1044.5 DAY 9 6 17 8 5 27 27 21 21 16 6 29 MIN. QFF PRESSURE IN HPA 1012.4 1005.6 1001.2 1008.4 1004.0 1001.2 1006.4 1005.5 1008.5 1009.3 1010.4 999.2 999.2 DAY 31 1 3 23 28 15 15 29 9 20 20 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 869.9 869.5 865.2 869.9 869.1 866.5 867.4 868.7 871.8 873.5 871.1 868.6 869.3 MAX. QFE PRESSURE IN HPA 879.0 880.8 875.4 881.0 877.4 871.1 871.8 875.1 878.0 880.0 880.0 875.5 881.0 DAY 9 6 17 8 5 8 27 21 21 16 6 5 MIN. QFE PRESSURE IN HPA 860.5 858.3 852.2 863.3 861.0 860.8 864.1 861.5 865.5 864.2 861.7 852.0 852.0 DAY 31 1 3 23 1 15 1 29 9 30 28 26 MEAN QNH PRESSURE IN HPA 1020.6 1020.2 1015.3 1020.7 1019.7 1016.9 1017.8 1019.3 1022.8 1024.8 1022.1 1019.2 1020.0 MAX. QNH PRESSURE IN HPA 1031.0 1033.1 1026.9 1033.3 1029.2 1022.0 1022.8 1026.6 1029.9 1032.2 1032.2 1027.0 1033.3 DAY 9 6 17 8 5 8 27 21 21 16 6 5 MIN. QNH PRESSURE IN HPA 1010.0 1007.5 1000.5 1013.2 1010.5 1010.3 1014.1 1011.1 1015.7 1014.2 1011.3 1000.3 1000.3 DAY 31 1 3 23 1 15 1 29 9 30 28 26 MEAN QFF PRESSURE IN HPA 1028.6 1026.4 1016.8 1019.5 1016.5 1010.0 1010.4 1013.1 1018.3 1022.5 1023.0 1023.2 1019.0 MAX. QFF PRESSURE IN HPA 1043.3 1047.5 1031.8 1037.0 1029.8 1015.5 1017.5 1021.6 1025.9 1033.7 1033.4 1042.2 1047.5 DAY 9 6 17 8 5 27 27 21 21 16 6 29 MIN. QFF PRESSURE IN HPA 1012.4 1008.1 998.7 1008.6 1005.3 1000.4 1006.1 1002.9 1007.3 1009.5 1010.7 1001.5 998.7 DAY 31 1 3 23 28 15 18 29 9 20 28 26 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 869.5 869.1 864.7 869.3 868.5 865.7 866.8 868.0 870.7 872.4 869.8 867.5 868.5 MAX. QFE PRESSURE IN HPA 878.0 880.2 873.5 881.0 877.4 870.6 870.8 874.2 876.8 880.0 880.0 874.6 881.0 DAY 9 6 17 8 5 27 27 21 30 16 5 21 MIN. QFE PRESSURE IN HPA 859.0 856.0 853.3 862.8 860.3 859.7 863.8 860.3 863.8 862.0 861.7 852.9 852.9 DAY 31 1 3 23 1 15 1 29 4 30 28 26 MEAN QNH PRESSURE IN HPA 1020.2 1019.8 1014.7 1020.0 1019.1 1015.9 1017.1 1018.5 1021.6 1023.5 1020.5 1018.0 1019.1 MAX. QNH PRESSURE IN HPA 1029.9 1032.4 1024.8 1033.3 1029.2 1021.5 1021.7 1025.6 1028.5 1032.2 1032.2 1026.0 1033.3 DAY 9 6 17 8 5 27 27 21 30 16 5 21 MIN. QNH PRESSURE IN HPA 1008.3 1004.8 1001.8 1012.6 1009.7 1009.1 1013.7 1009.7 1013.7 1011.7 1011.3 1001.3 1001.3 DAY 31 1 3 23 1 15 1 29 4 30 28 26 MEAN QFF PRESSURE IN HPA 1026.9 1025.5 1015.5 1018.1 1015.5 1008.9 1009.5 1011.8 1016.4 1020.1 1020.2 1020.7 1017.4 MAX. QFF PRESSURE IN HPA 1040.5 1043.5 1027.1 1036.5 1030.0 1016.2 1016.6 1019.9 1025.2 1033.5 1034.3 1037.5 1043.5 DAY 2 6 24 8 5 27 27 21 29 16 5 29 MIN. QFF PRESSURE IN HPA 1010.4 1006.5 998.8 1007.3 1006.2 999.3 1005.9 1001.8 1005.1 1006.3 1007.3 1002.6 998.8 DAY 31 29 3 23 9 15 15 29 9 30 8 26 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 868.7 868.4 863.8 868.2 867.9 864.8 866.1 867.3 869.7 871.6 869.0 866.8 867.7 MAX. QFE PRESSURE IN HPA 877.0 879.0 872.1 880.0 877.0 869.3 870.0 873.1 876.2 879.5 879.8 874.5 880.0 DAY 9 6 16 8 5 8 27 21 30 16 5 21 MIN. QFE PRESSURE IN HPA 859.0 854.1 852.0 861.1 861.5 857.6 863.0 859.6 863.0 861.8 862.2 853.1 852.0 DAY 31 1 4 30 1 15 8 29 4 30 28 26 MEAN QNH PRESSURE IN HPA 1019.3 1018.9 1013.8 1018.7 1018.4 1014.8 1016.4 1017.7 1020.4 1022.6 1019.7 1017.2 1018.2 MAX. QNH PRESSURE IN HPA 1028.8 1031.0 1023.2 1032.2 1028.8 1020.0 1020.8 1024.3 1027.8 1031.6 1031.9 1025.9 1032.2 DAY 9 6 16 8 5 8 27 21 30 16 5 21 MIN. QNH PRESSURE IN HPA 1008.3 1002.7 1000.3 1010.7 1011.1 1006.7 1012.8 1008.9 1012.8 1011.4 1011.9 1001.5 1000.3 DAY 31 1 4 30 1 15 8 29 4 30 28 26 MEAN QFF PRESSURE IN HPA 1025.8 1023.8 1014.6 1017.0 1015.4 1008.4 1009.3 1011.3 1015.6 1019.8 1019.7 1019.6 1016.7 MAX. QFF PRESSURE IN HPA 1038.3 1042.0 1025.1 1034.6 1030.1 1014.8 1015.4 1018.7 1024.6 1032.6 1035.3 1037.8 1042.0 DAY 2 6 24 8 5 7 27 21 30 16 5 29 MIN. QFF PRESSURE IN HPA 1010.0 1002.7 1000.9 1006.4 1004.3 997.2 1005.7 1002.4 1004.1 1006.4 1007.7 1001.9 997.2 DAY 31 1 3 23 9 15 13 29 9 30 8 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 868.9 868.7 864.4 868.3 868.1 864.9 866.0 867.3 870.0 872.2 869.7 867.4 868.0 MAX. QFE PRESSURE IN HPA 877.0 879.0 872.8 878.8 876.0 869.2 870.0 872.7 876.5 879.3 880.5 875.3 880.5 DAY 9 6 16 8 5 7 26 13 30 28 5 21 MIN. QFE PRESSURE IN HPA 859.0 854.7 851.0 860.0 862.1 858.2 862.0 860.0 863.0 863.0 862.5 854.0 851.0 DAY 31 1 4 30 27 15 8 29 4 30 19 25 MEAN QNH PRESSURE IN HPA 1019.5 1019.3 1014.4 1018.8 1018.7 1015.0 1016.2 1017.7 1020.8 1023.3 1020.4 1017.8 1018.5 MAX. QNH PRESSURE IN HPA 1028.8 1031.0 1024.0 1030.8 1027.6 1019.9 1020.8 1023.9 1028.2 1031.4 1032.7 1026.8 1032.7 DAY 9 6 16 8 5 7 26 13 30 28 5 21 MIN. QNH PRESSURE IN HPA 1008.3 1003.4 999.1 1009.4 1011.8 1007.4 1011.7 1009.4 1012.8 1012.8 1012.2 1002.6 999.1 DAY 31 1 4 30 27 15 8 29 4 30 19 25 MEAN QFF PRESSURE IN HPA 1026.8 1025.3 1016.4 1018.3 1016.4 1009.3 1009.8 1012.0 1017.1 1021.6 1021.8 1021.9 1018.1 MAX. QFF PRESSURE IN HPA 1042.8 1044.7 1029.1 1033.3 1029.7 1015.1 1015.9 1018.8 1025.8 1032.6 1036.8 1036.3 1044.7 DAY 2 6 16 8 5 27 26 21 30 16 5 29 MIN. QFF PRESSURE IN HPA 1009.8 1003.4 1000.9 1007.5 1004.3 999.1 1005.9 1004.0 1007.1 1009.5 1010.6 1004.8 999.1 DAY 31 1 4 30 28 15 8 29 8 30 19 26 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 869.3 869.0 865.2 869.3 869.5 866.3 867.0 868.4 871.2 873.0 870.2 867.9 868.8 MAX. QFE PRESSURE IN HPA 878.0 879.0 874.4 879.2 876.3 871.2 871.4 874.0 877.9 880.0 880.1 875.7 880.1 DAY 9 6 16 8 4 9 26 20 30 16 5 21 MIN. QFE PRESSURE IN HPA 858.0 855.2 852.0 860.0 862.7 860.5 863.5 861.5 863.5 863.3 862.0 851.2 851.2 DAY 31 1 4 30 27 14 8 29 8 30 19 25 MEAN QNH PRESSURE IN HPA 1020.0 1019.7 1015.3 1020.0 1020.2 1016.5 1017.4 1018.9 1022.2 1024.1 1021.0 1018.3 1019.5 MAX. QNH PRESSURE IN HPA 1029.9 1031.0 1025.8 1031.3 1028.0 1022.2 1022.4 1025.3 1029.8 1032.2 1032.3 1027.3 1032.3 DAY 9 6 16 8 4 9 26 20 30 16 5 21 MIN. QNH PRESSURE IN HPA 1007.1 1003.9 1000.3 1009.4 1012.5 1010.0 1013.4 1011.1 1013.4 1013.2 1011.7 999.4 999.4 DAY 31 1 4 30 27 14 8 29 8 30 19 25 MEAN QFF PRESSURE IN HPA 1027.7 1025.8 1016.9 1018.7 1016.9 1009.6 1009.8 1012.7 1017.6 1021.8 1021.9 1022.6 1018.5 MAX. QFF PRESSURE IN HPA 1045.0 1045.4 1028.6 1034.2 1029.6 1014.7 1016.7 1020.0 1026.9 1033.2 1032.5 1040.4 1045.4 DAY 2 6 23 8 2 9 26 13 30 16 5 29 MIN. QFF PRESSURE IN HPA 1007.9 1003.3 1001.4 1007.7 1006.4 1000.6 1005.5 1003.5 1006.8 1008.3 1009.2 1001.7 1000.6 DAY 31 29 4 22 28 14 8 29 8 30 19 25 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 869.5 868.7 865.1 868.8 869.4 866.2 867.1 868.4 871.2 872.8 870.0 867.7 868.7 MAX. QFE PRESSURE IN HPA 878.0 878.8 875.8 878.5 876.5 870.6 871.2 875.0 877.3 879.4 880.0 874.4 880.0 DAY 9 5 16 8 4 7 26 20 30 28 5 21 MIN. QFE PRESSURE IN HPA 860.5 856.0 853.5 858.7 862.2 860.3 863.4 861.5 863.3 865.0 861.2 849.2 849.2 DAY 30 29 4 30 27 14 8 28 8 30 19 25 MEAN QNH PRESSURE IN HPA 1020.2 1019.3 1015.2 1019.4 1020.1 1016.5 1017.4 1019.0 1022.2 1023.9 1020.8 1018.2 1019.3 MAX. QNH PRESSURE IN HPA 1029.9 1030.8 1027.4 1030.5 1028.2 1021.5 1022.2 1026.5 1029.1 1031.5 1032.2 1025.8 1032.2 DAY 9 5 16 8 4 7 26 20 30 28 5 21 MIN. QNH PRESSURE IN HPA 1010.0 1004.8 1002.0 1007.9 1011.9 1009.7 1013.3 1011.1 1013.2 1015.1 1010.8 997.1 997.1 DAY 30 29 4 30 27 14 8 28 8 30 19 25 MEAN QFF PRESSURE IN HPA 1027.0 1024.3 1016.1 1017.4 1016.6 1009.4 1009.9 1012.3 1017.1 1020.6 1020.5 1021.2 1017.7 MAX. QFF PRESSURE IN HPA 1040.6 1042.3 1028.7 1033.2 1029.7 1015.2 1017.6 1019.9 1025.8 1032.5 1032.7 1037.6 1042.3 DAY 9 6 16 8 4 26 26 20 30 15 5 28 MIN. QFF PRESSURE IN HPA 1013.2 1002.3 1002.7 1004.2 1005.6 997.9 1005.0 1002.0 1003.2 1009.9 1007.8 997.6 997.6 DAY 27 29 4 30 27 14 8 28 8 30 19 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -11.6 -12.2 2.9 9.6 12.4 16.2 19.1 18.1 13.9 11.4 6.7 -0.1 7.2 MINIMUN AIR TEMPERATURE (C) -18.1 -19.9 -2.1 1.5 5.3 8.5 12.3 12.1 7.2 5.8 2.1 -4.1 0.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 31 25 9 0 0 0 0 0 0 0 3 18 86 DAYS WITH FREEZING MIN.<= 0 31 26 23 11 3 0 0 0 1 5 8 28 136 TEMPERATURE RECORDS LOWEST(C) -30.2 -33.8 -8.0 -3.6 -3.0 4.0 8.0 6.4 -0.4 -1.8 -9.0 -13.8 -33.8 DAY 31 3 4 23 1 22 24 20 20 18 21 6 MAXIMUM AIR TEMPERATURE (C) -3.7 -2.0 8.9 18.7 20.3 23.2 24.9 23.9 21.1 18.4 12.0 6.3 14.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 0 1 3 1 1 0 0 7 DAYS WITH MAXIMUM TEMP. <= 0 28 16 2 0 0 0 0 0 0 0 0 5 51 TEMPERATURE RECORDS HIGHEST(C) 5.0 6.0 20.0 26.0 33.0 29.0 31.6 30.6 32.6 30.0 18.6 14.4 33.0 DAY 19 28 26 17 24 19 30 9 1 5 28 24 DIF. BETWEEN (MAX.-MIN.) (C) 14.4 17.9 11.0 17.2 15.0 14.7 12.6 11.8 13.9 12.6 9.9 10.4 13.4 MEAN DAILY TEMP. (MDT) (C) -10.9 -11.0 3.4 10.1 12.8 15.8 18.6 18.0 14.2 12.1 7.1 1.1 7.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.0 0.7 4.0 0.0 0.3 0.0 0.0 5.0 HEATING DEG. DAYS(BASE 18 0C) 841.2 728.8 453.2 238.1 165.7 65.4 10.7 24.3 122.4 190.5 328.2 524.0 3692.3 DEWPOINT (MEAN C) -14.4 -15.5 -1.3 1.7 5.1 9.3 11.4 12.2 9.1 5.5 1.8 -3.2 1.8 MIXING RATIO (G/KG) 1.65 1.65 4.10 5.08 6.50 8.67 10.10 10.52 8.61 6.72 5.26 3.55 6.03 VAPOUR PRESSURE (HPA) 2.31 2.30 5.67 7.05 8.99 11.92 13.86 14.43 11.86 9.32 7.29 4.93 8.33 SATURATION DEF. (HPA) 0.57 0.71 2.30 5.91 6.40 7.36 9.11 7.03 5.17 5.40 3.00 1.43 4.53 RELATIVE HUMIDITY (MEAN %) 81 78 78 64 66 67 65 71 77 76 76 83 74 RELATIVE HUMIDITY (MAX. %) 88 88 94 93 89 93 85 91 95 96 92 95 92 RELATIVE HUMIDITY (MIN. %) 71 65 56 36 38 43 46 48 50 55 58 62 52 RELATIVE HUMIDITY (MEAN% 03UTC) 82 78 90 88 85 88 81 88 92 86 85 90 86 RELATIVE HUMIDITY (MEAN% 09UTC) 79 82 64 39 43 45 52 52 50 59 62 72 58 RELATIVE HUMIDITY (MEAN% 15UTC) 77 77 73 54 60 61 59 70 77 72 78 78 70 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 16.7 17.3 16.7 5.4 13.4 11.8 0.8 24.0 22.8 62.7 1.3 31.7 224.6 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 1 1 2 0 1 5 DAYS WITH PRECIPITATION >= 5 0 2 0 0 1 1 0 1 2 3 0 3 13 DAYS WITH PRECIPITATION >= 1 4 4 7 2 5 2 0 4 3 5 0 5 41 DAYS WITH PRECIPITATION 11 6 12 6 11 5 4 8 8 9 3 6 89 GREATEST DAILY PRECIPITATION 4.3 5.3 3.9 2.0 5.0 8.0 0.4 16.6 13.0 26.0 0.9 10.5 26.0 DAY 28 11 29 13 17 8 10 17 19 29 20 2 DAY WITH THUNDER STORM 0 0 1 2 0 2 0 6 0 1 0 0 12 DAYS WITH SNOW OR SLEET 11 6 6 0 0 0 0 0 0 0 1 6 30 DAYS WITH DUST 0 0 0 0 1 0 1 1 0 2 1 0 6 WIND DIRECTION (PREVAILING) 225 225 90 90 90 90 90 90 90 90 225 225 90 PREVAILING WIND SPEED(KNOTS) 18.8 16.0 14.2 18.5 17.4 18.6 18.5 16.6 14.1 16.9 29.7 21.2 16.8 PREVAILING WIND PERCENT 16.4 10.6 21.0 34.2 36.3 56.3 69.0 56.5 50.8 40.8 27.5 18.4 35.5 CALMS PERCENT OF WIND 55.9 66.7 50.4 48.3 40.7 39.2 30.2 37.9 47.1 44.5 41.3 59.0 46.4 NO. OF WIND OBSERVATION 220 207 248 240 248 240 248 248 238 211 240 239 2827 VECTOR WIND DIRECTION (MEAN) 236 213 124 86 94 84 84 82 86 95 206 182 100 VECTOR WIND MAGNITUDE(KNOTS) 2.1 1.4 2.0 5.4 4.6 10.5 12.6 9.7 7.4 5.8 6.6 3.5 4.4 WIND STEADINESES (MEAN %) 35.6 31.8 33.9 65.1 47.9 95.5 98.4 98.0 98.7 65.9 54.1 46.7 51.2 WIND SPEED (MEAN KNOTS) 5.9 4.4 5.9 8.3 9.6 11.0 12.8 9.9 7.5 8.8 12.2 7.5 8.6 FASTEST WIND DIRECTION 240 210 80 90 250 80 70 80 90 90 220 200 250 FASTEST WIND SPEED (KNOTS) 39 35 35 35 51 41 35 35 39 35 51 45 51 DAY 7 1 27 18 7 20 2 1 18 13 27 11 DAYS WITH SKY CLEAR (0-2)/8 16 17 8 12 14 23 21 15 18 15 8 12 179 DAYS WITH P.CLOUDY (3-6)/8 8 8 14 15 16 6 9 14 10 6 12 10 128 DAYS WITH CLOUDY (7-8)/8 7 2 9 3 1 1 1 2 2 10 10 9 57 DAYS WITH VISIBILITY =< 2 KM 16 18 13 7 11 7 2 6 11 16 16 15 138 DURATION OF SUNSHINE HOURS 131.8 155.3 153.4 244.7 269.0 317.4 300.7 233.2 233.4 151.7 141.8 111.5 2443.9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 870.4 872.7 867.3 871.0 870.0 867.8 868.4 868.1 869.5 872.2 870.5 869.1 869.7 MAX. QFE PRESSURE IN HPA 879.4 880.8 873.6 876.4 876.0 872.9 873.9 875.3 879.8 880.4 877.5 876.7 880.8 DAY-HOUR 22- 6 8- 6 11-18 20- 6 21- 6 6- 6 10- 6 18-18 22- 6 24- 6 9- 6 20- 6 MIN. QFE PRESSURE IN HPA 860.0 861.0 857.9 865.0 860.3 861.0 861.0 861.4 861.9 862.9 862.5 861.6 857.9 DAY-HOUR 1-12 1- 0 29-12 14- 0 7- 0 9-15 5-15 1-12 13-15 1-15 18- 9 8-12 MEAN QNH PRESSURE IN HPA 1021.2 1023.8 1017.7 1021.9 1020.7 1018.3 1018.9 1018.6 1020.2 1023.3 1021.3 1019.7 1020.5 MAX. QNH PRESSURE IN HPA 1031.5 1033.1 1024.9 1028.1 1027.6 1024.1 1025.2 1026.8 1031.9 1032.6 1029.3 1028.4 1033.1 DAY-HOUR 22- 6 8- 6 11-18 20- 6 21- 6 6- 6 10- 6 18-18 22- 6 24- 6 9- 6 20- 6 MIN. QNH PRESSURE IN HPA 1009.4 1010.5 1007.0 1015.1 1009.7 1010.5 1010.5 1011.0 1011.6 1012.7 1012.2 1011.2 1007.0 DAY-HOUR 1-12 1- 0 29-12 14- 0 7- 0 9-15 5-15 1-12 13-15 1-15 18- 9 8-12 MEAN QFF PRESSURE IN HPA 1032.8 1036.0 1019.6 1020.1 1017.1 1012.4 1011.3 1011.5 1015.6 1020.3 1021.1 1023.6 1020.1 MAX. QFF PRESSURE IN HPA 1047.2 1055.6 1029.2 1028.0 1028.6 1018.8 1020.0 1022.2 1032.2 1034.2 1033.6 1031.3 1055.6 DAY-HOUR 27- 6 3- 6 3- 6 30- 3 1- 3 2- 3 11- 0 18-21 22- 3 24- 3 21-15 3-18 MIN. QFF PRESSURE IN HPA 1015.5 1018.5 1004.5 1008.0 1003.2 1004.5 1001.4 1001.9 1005.2 1004.4 1008.0 1011.6 1001.4 DAY-HOUR 1-21 23- 0 26-21 15-12 6-15 9-15 31-18 1- 0 1-12 2- 0 27-21 10-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 870.4 872.2 867.2 870.8 870.2 868.2 868.6 868.1 869.8 872.2 870.5 869.1 869.8 MAX. QFE PRESSURE IN HPA 879.0 880.0 872.8 875.2 875.1 872.0 873.0 874.4 878.4 879.8 876.8 875.7 880.0 DAY 22 8 12 20 21 6 10 19 22 24 8 20 MIN. QFE PRESSURE IN HPA 862.0 861.0 858.0 865.0 860.3 862.0 863.4 862.0 864.6 862.9 864.7 863.0 858.0 DAY 2 1 29 14 7 10 6 1 14 2 15 13 MEAN QNH PRESSURE IN HPA 1021.3 1023.3 1017.6 1021.7 1021.0 1018.7 1019.2 1018.6 1020.6 1023.2 1021.3 1019.7 1020.5 MAX. QNH PRESSURE IN HPA 1031.0 1032.2 1024.0 1026.7 1026.6 1023.1 1024.2 1025.8 1030.3 1031.9 1028.5 1027.3 1032.2 DAY 22 8 12 20 21 6 10 19 22 24 8 20 MIN. QNH PRESSURE IN HPA 1011.7 1010.5 1007.1 1015.1 1009.7 1011.7 1013.3 1011.7 1014.6 1012.7 1014.8 1012.8 1007.1 DAY 2 1 29 14 7 10 6 1 14 2 15 13 MEAN QFF PRESSURE IN HPA 1031.7 1034.2 1019.3 1019.7 1017.5 1013.0 1011.8 1011.6 1015.8 1019.7 1020.7 1022.8 1019.8 MAX. QFF PRESSURE IN HPA 1044.4 1050.0 1027.2 1027.5 1026.9 1018.2 1020.0 1021.3 1030.0 1033.8 1030.0 1029.7 1050.0 DAY 31 4 12 30 1 7 11 19 22 24 22 2 MIN. QFF PRESSURE IN HPA 1016.5 1018.5 1007.0 1008.5 1003.3 1006.0 1005.1 1001.9 1007.6 1004.4 1010.0 1012.0 1001.9 DAY 2 23 27 15 7 9 31 1 2 2 30 11 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 870.2 872.3 867.3 871.2 870.7 868.5 869.1 868.6 870.1 872.5 870.7 869.1 870.0 MAX. QFE PRESSURE IN HPA 878.0 880.0 872.8 875.8 875.5 872.5 873.4 874.3 879.0 879.5 877.0 876.1 880.0 DAY 22 8 12 20 21 6 10 19 22 24 8 20 MIN. QFE PRESSURE IN HPA 861.0 861.0 858.0 865.0 862.0 862.6 863.8 862.2 864.8 863.3 864.4 862.5 858.0 DAY 1 1 29 15 7 10 6 1 13 2 18 8 MEAN QNH PRESSURE IN HPA 1021.0 1023.5 1017.7 1022.1 1021.5 1019.1 1019.8 1019.2 1020.9 1023.6 1021.5 1019.8 1020.8 MAX. QNH PRESSURE IN HPA 1029.9 1032.2 1024.0 1027.4 1027.0 1023.6 1024.7 1025.7 1031.0 1031.6 1028.8 1027.7 1032.2 DAY 22 8 12 20 21 6 10 19 22 24 8 20 MIN. QNH PRESSURE IN HPA 1010.5 1010.5 1007.1 1015.1 1011.7 1012.4 1013.7 1011.9 1014.9 1013.2 1014.4 1012.2 1007.1 DAY 1 1 29 15 7 10 6 1 13 2 18 8 MEAN QFF PRESSURE IN HPA 1033.1 1036.1 1020.2 1021.5 1018.8 1014.1 1013.1 1013.1 1017.6 1021.4 1022.2 1024.2 1021.3 MAX. QFF PRESSURE IN HPA 1045.4 1051.0 1028.3 1028.0 1028.6 1018.8 1019.1 1021.1 1032.2 1034.2 1033.0 1029.9 1051.0 DAY 31 3 3 30 1 2 11 19 22 24 22 2 MIN. QFF PRESSURE IN HPA 1018.1 1019.6 1005.7 1010.8 1006.0 1006.8 1006.6 1003.3 1010.0 1006.2 1010.5 1013.2 1003.3 DAY 2 1 27 15 7 9 6 1 13 2 30 11 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 871.3 873.6 868.1 871.8 870.7 868.6 869.2 869.0 870.6 873.2 871.5 870.2 870.7 MAX. QFE PRESSURE IN HPA 879.4 880.8 873.2 876.4 876.0 872.9 873.9 875.0 879.8 880.4 877.5 876.7 880.8 DAY 22 8 7 20 21 6 10 18 22 24 9 20 MIN. QFE PRESSURE IN HPA 861.2 863.9 858.7 865.7 861.8 863.2 864.0 862.6 865.1 864.0 865.0 863.2 858.7 DAY 1 1 29 15 7 9 6 1 13 2 18 8 MEAN QNH PRESSURE IN HPA 1022.3 1024.8 1018.7 1022.8 1021.6 1019.2 1019.8 1019.7 1021.5 1024.4 1022.4 1021.0 1021.5 MAX. QNH PRESSURE IN HPA 1031.5 1033.1 1024.4 1028.1 1027.6 1024.1 1025.2 1026.5 1031.9 1032.6 1029.3 1028.4 1033.1 DAY 22 8 7 20 21 6 10 18 22 24 9 20 MIN. QNH PRESSURE IN HPA 1010.8 1013.8 1007.9 1015.9 1011.4 1013.0 1014.0 1012.4 1015.2 1014.0 1015.1 1013.0 1007.9 DAY 1 1 29 15 7 9 6 1 13 2 18 8 MEAN QFF PRESSURE IN HPA 1034.9 1038.3 1020.9 1020.8 1017.8 1012.9 1011.8 1012.3 1016.7 1021.4 1022.5 1025.6 1021.3 MAX. QFF PRESSURE IN HPA 1047.2 1055.6 1029.2 1027.7 1025.8 1018.4 1019.5 1021.6 1031.7 1034.0 1032.4 1031.1 1055.6 DAY 27 3 3 20 1 6 10 18 22 24 22 3 MIN. QFF PRESSURE IN HPA 1020.1 1022.0 1006.9 1010.1 1005.3 1006.9 1004.2 1003.4 1008.5 1006.1 1011.0 1014.8 1003.4 DAY 2 23 27 15 7 9 31 1 13 2 30 11 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 870.6 873.1 867.6 871.1 869.8 867.7 868.5 868.2 869.4 872.2 870.5 869.0 869.8 MAX. QFE PRESSURE IN HPA 879.0 879.6 873.2 875.4 875.6 872.3 873.6 875.0 879.1 879.8 876.7 875.2 879.8 DAY 22 5 7 20 20 6 10 18 22 23 7 20 MIN. QFE PRESSURE IN HPA 860.5 864.0 858.5 865.1 860.7 862.3 863.0 862.4 863.5 863.7 862.5 862.2 858.5 DAY 1 1 28 15 7 10 6 1 13 2 18 8 MEAN QNH PRESSURE IN HPA 1021.5 1024.3 1018.0 1022.0 1020.6 1018.2 1019.1 1018.7 1020.1 1023.2 1021.3 1019.7 1020.6 MAX. QNH PRESSURE IN HPA 1031.0 1031.7 1024.4 1026.9 1027.2 1023.4 1024.9 1026.5 1031.1 1031.9 1028.4 1026.7 1031.9 DAY 22 5 7 20 20 6 10 18 22 23 7 20 MIN. QNH PRESSURE IN HPA 1010.0 1014.0 1007.7 1015.2 1010.2 1012.0 1012.8 1012.1 1013.4 1013.6 1012.2 1011.9 1007.7 DAY 1 1 28 15 7 10 6 1 13 2 18 8 MEAN QFF PRESSURE IN HPA 1032.4 1035.9 1019.5 1019.3 1016.4 1011.7 1011.0 1011.0 1014.6 1019.7 1020.4 1023.1 1019.6 MAX. QFF PRESSURE IN HPA 1043.4 1051.6 1027.3 1025.4 1024.5 1018.4 1019.2 1021.6 1029.9 1032.9 1029.2 1029.8 1051.6 DAY 27 3 11 4 20 6 10 18 22 23 7 3 MIN. QFF PRESSURE IN HPA 1018.7 1019.8 1005.0 1008.6 1003.8 1005.0 1003.5 1003.0 1005.7 1005.5 1009.6 1012.2 1003.0 DAY 2 23 27 15 7 10 31 9 1 2 30 11 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 869.4 872.2 866.6 870.2 869.0 866.8 867.5 867.1 868.3 871.1 869.7 868.2 868.8 MAX. QFE PRESSURE IN HPA 877.7 878.7 872.5 874.5 874.6 871.4 872.9 874.3 878.2 879.2 876.5 873.6 879.2 DAY 21 5 11 4 20 6 10 18 22 23 7 18 MIN. QFE PRESSURE IN HPA 860.0 864.4 857.9 865.0 861.3 861.2 862.0 861.4 862.0 863.2 863.0 861.6 857.9 DAY 1 1 29 14 6 10 6 1 13 1 15 8 MEAN QNH PRESSURE IN HPA 1020.1 1023.3 1016.9 1021.0 1019.6 1017.2 1017.9 1017.5 1018.8 1022.0 1020.5 1018.7 1019.5 MAX. QNH PRESSURE IN HPA 1029.6 1030.7 1023.6 1025.9 1026.0 1022.4 1024.1 1025.7 1030.1 1031.3 1028.2 1024.9 1031.3 DAY 21 5 11 4 20 6 10 18 22 23 7 18 MIN. QNH PRESSURE IN HPA 1009.4 1014.4 1007.0 1015.1 1010.9 1010.8 1011.7 1011.0 1011.7 1013.0 1012.8 1011.2 1007.0 DAY 1 1 29 14 6 10 6 1 13 1 15 8 MEAN QFF PRESSURE IN HPA 1030.8 1034.1 1018.5 1018.8 1015.9 1011.3 1010.3 1010.2 1013.9 1018.6 1019.6 1021.7 1018.7 MAX. QFF PRESSURE IN HPA 1042.6 1049.6 1027.6 1025.9 1024.1 1017.2 1018.1 1020.8 1028.6 1032.3 1029.1 1029.3 1049.6 DAY 27 3 11 30 20 6 10 18 22 23 7 3 MIN. QFF PRESSURE IN HPA 1017.8 1022.2 1007.7 1008.0 1003.2 1005.2 1002.8 1002.1 1005.2 1004.8 1009.3 1012.2 1002.1 DAY 1 1 26 15 6 10 31 1 1 2 30 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 870.0 872.3 866.8 870.2 868.9 866.8 867.2 866.9 868.4 871.6 870.2 868.8 869.0 MAX. QFE PRESSURE IN HPA 878.0 878.9 873.0 875.0 874.8 871.0 872.8 873.5 877.7 879.4 877.4 874.0 879.4 DAY 21 5 11 29 20 6 10 18 22 23 7 18 MIN. QFE PRESSURE IN HPA 861.0 865.0 858.0 865.6 860.5 861.0 861.0 861.6 861.9 862.9 863.5 862.0 858.0 DAY 1 22 29 14 6 9 5 2 13 1 24 8 MEAN QNH PRESSURE IN HPA 1020.8 1023.4 1017.1 1021.0 1019.5 1017.1 1017.6 1017.3 1019.0 1022.6 1021.0 1019.4 1019.7 MAX. QNH PRESSURE IN HPA 1029.9 1030.9 1024.2 1026.5 1026.2 1021.9 1024.0 1024.8 1029.6 1031.5 1029.2 1025.3 1031.5 DAY 21 5 11 29 20 6 10 18 22 23 7 18 MIN. QNH PRESSURE IN HPA 1010.5 1015.1 1007.1 1015.8 1010.0 1010.5 1010.5 1011.2 1011.6 1012.7 1013.4 1011.7 1007.1 DAY 1 22 29 14 6 9 5 2 13 1 24 8 MEAN QFF PRESSURE IN HPA 1032.9 1036.2 1019.5 1020.3 1016.6 1011.9 1010.6 1011.0 1015.4 1020.4 1021.6 1023.8 1020.0 MAX. QFF PRESSURE IN HPA 1045.8 1053.0 1028.4 1027.8 1025.0 1017.1 1018.1 1020.5 1029.7 1032.8 1033.6 1031.2 1053.0 DAY 27 3 11 30 20 6 10 18 22 23 21 3 MIN. QFF PRESSURE IN HPA 1019.1 1022.6 1006.6 1011.9 1003.2 1004.5 1003.5 1004.4 1007.1 1008.5 1010.7 1013.1 1003.2 DAY 2 22 26 15 6 9 5 1 13 2 27 10 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 870.7 872.9 867.5 871.4 870.2 868.0 868.4 868.5 869.7 872.6 870.5 869.2 870.0 MAX. QFE PRESSURE IN HPA 879.0 879.7 873.6 875.8 875.7 872.1 873.5 875.3 878.4 879.8 877.4 874.2 879.8 DAY 21 3 11 19 20 6 10 18 22 23 7 18 MIN. QFE PRESSURE IN HPA 861.6 864.9 859.7 866.0 863.0 861.5 862.0 862.5 863.4 863.5 863.0 862.2 859.7 DAY 1 22 29 14 6 9 31 1 13 1 24 8 MEAN QNH PRESSURE IN HPA 1021.5 1024.1 1018.0 1022.4 1021.0 1018.5 1018.9 1019.0 1020.4 1023.8 1021.4 1019.9 1020.8 MAX. QNH PRESSURE IN HPA 1031.0 1031.8 1024.9 1027.4 1027.3 1023.2 1024.8 1026.8 1030.3 1031.9 1029.2 1025.6 1031.9 DAY 21 3 11 19 20 6 10 18 22 23 7 18 MIN. QNH PRESSURE IN HPA 1011.2 1015.0 1009.1 1016.2 1012.8 1011.1 1011.7 1012.2 1013.3 1013.4 1012.8 1011.9 1009.1 DAY 1 22 29 14 6 9 31 1 13 1 24 8 MEAN QFF PRESSURE IN HPA 1034.1 1037.4 1020.1 1020.4 1017.1 1012.1 1010.9 1011.7 1015.6 1020.9 1021.5 1024.5 1020.5 MAX. QFF PRESSURE IN HPA 1047.1 1055.3 1028.9 1027.0 1023.8 1017.9 1019.7 1022.0 1030.0 1033.0 1032.3 1031.3 1055.3 DAY 30 3 11 29 20 6 10 18 22 23 21 3 MIN. QFF PRESSURE IN HPA 1018.5 1023.6 1006.1 1011.8 1006.1 1004.8 1001.4 1004.4 1006.4 1006.5 1009.4 1013.7 1001.4 DAY 1 22 26 17 6 9 31 1 1 1 27 10 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 870.4 872.8 867.5 871.5 870.4 868.3 868.7 868.3 869.9 872.7 870.3 869.1 870.0 MAX. QFE PRESSURE IN HPA 879.0 880.0 873.3 876.1 875.4 872.1 873.8 875.0 878.4 880.0 877.4 874.8 880.0 DAY 21 7 11 19 20 6 9 18 21 23 7 19 MIN. QFE PRESSURE IN HPA 861.2 864.0 859.4 865.4 862.0 862.0 862.5 863.0 864.6 863.7 863.5 863.0 859.4 DAY 1 22 29 14 6 9 31 1 13 1 24 10 MEAN QNH PRESSURE IN HPA 1021.3 1024.0 1017.9 1022.5 1021.2 1018.8 1019.3 1018.9 1020.7 1023.8 1021.2 1019.8 1020.8 MAX. QNH PRESSURE IN HPA 1031.0 1032.2 1024.5 1027.7 1026.9 1023.2 1025.1 1026.5 1030.3 1032.2 1029.2 1026.2 1032.2 DAY 21 7 11 19 20 6 9 18 21 23 7 19 MIN. QNH PRESSURE IN HPA 1010.8 1014.0 1008.7 1015.5 1011.7 1011.7 1012.2 1012.8 1014.6 1013.6 1013.4 1012.8 1008.7 DAY 1 22 29 14 6 9 31 1 13 1 24 10 MEAN QFF PRESSURE IN HPA 1032.4 1035.6 1019.4 1019.7 1016.9 1012.3 1011.3 1011.2 1015.2 1020.4 1020.3 1023.3 1019.8 MAX. QFF PRESSURE IN HPA 1045.4 1050.6 1028.3 1027.0 1023.8 1018.3 1019.6 1022.2 1029.7 1033.3 1031.4 1029.4 1050.6 DAY 30 3 11 29 20 6 10 18 21 23 21 3 MIN. QFF PRESSURE IN HPA 1015.5 1019.5 1004.5 1010.1 1005.7 1005.2 1003.0 1003.8 1005.8 1006.1 1008.0 1011.6 1003.0 DAY 1 22 26 14 6 9 31 8 1 1 27 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -9.1 -4.2 2.1 7.0 11.5 16.8 17.6 15.9 15.3 9.7 7.0 -1.6 7.3 MINIMUN AIR TEMPERATURE (C) -15.2 -9.3 -3.2 0.9 4.0 9.0 11.0 10.9 8.3 4.0 0.5 -6.1 1.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 29 26 11 5 1 0 0 0 0 0 3 13 88 DAYS WITH FREEZING MIN.<= 0 31 27 24 15 4 0 0 0 0 2 15 26 144 TEMPERATURE RECORDS LOWEST(C) -29.0 -22.4 -13.0 -9.6 -4.0 3.6 5.8 7.4 2.4 -1.0 -6.4 -24.0 -29.0 DAY 8 9 18 3 14 1 6 22 23 17 18 29 MAXIMUM AIR TEMPERATURE (C) -2.3 0.4 8.9 14.4 19.4 24.5 23.7 21.2 23.5 17.0 15.8 4.4 14.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 4 2 0 4 0 0 0 10 DAYS WITH MAXIMUM TEMP. <= 0 23 15 4 1 0 0 0 0 0 0 0 12 55 TEMPERATURE RECORDS HIGHEST(C) 5.8 8.4 16.2 27.0 28.4 34.2 30.8 26.2 33.0 24.6 22.6 17.4 34.2 DAY 4 18 13 27 18 3 22 24 13 7 6 2 DIF. BETWEEN (MAX.-MIN.) (C) 12.9 9.7 12.1 13.5 15.4 15.5 12.7 10.3 15.2 13.0 15.3 10.5 13.0 MEAN DAILY TEMP. (MDT) (C) -8.7 -4.4 2.8 7.6 11.7 16.8 17.4 16.0 15.9 10.5 8.1 -0.9 7.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.9 2.5 0.0 0.3 0.0 0.0 0.0 3.7 HEATING DEG. DAYS(BASE 18 0C) 828.8 628.6 470.1 313.3 195.6 52.6 39.7 60.6 71.2 233.6 296.5 584.5 3775.1 DEWPOINT (MEAN C) -11.6 -7.2 -2.4 2.7 5.0 11.0 12.9 12.9 10.1 5.4 0.7 -4.6 2.9 MIXING RATIO (G/KG) 2.07 2.74 3.85 5.56 6.56 9.73 11.10 10.95 9.17 6.61 4.79 3.49 6.39 VAPOUR PRESSURE (HPA) 2.87 3.80 5.34 7.65 9.05 13.32 15.18 15.01 12.60 9.15 6.65 4.85 8.79 SATURATION DEF. (HPA) 0.62 1.01 2.35 3.44 5.52 6.94 5.73 3.57 5.79 3.65 4.26 1.61 3.71 RELATIVE HUMIDITY (MEAN %) 83 82 77 79 71 73 77 84 76 79 70 83 78 RELATIVE HUMIDITY (MAX. %) 91 92 95 97 96 96 95 97 97 97 94 94 95 RELATIVE HUMIDITY (MIN. %) 70 68 54 52 45 47 55 67 49 53 40 68 56 RELATIVE HUMIDITY (MEAN% 03UTC) 85 86 89 91 89 92 89 95 93 95 87 89 90 RELATIVE HUMIDITY (MEAN% 09UTC) 79 77 65 60 49 49 60 69 52 57 48 74 62 RELATIVE HUMIDITY (MEAN% 15UTC) 82 77 68 72 64 69 71 81 76 77 64 82 74 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 50.0 31.3 47.1 51.6 8.7 4.2 0.4 1.2 0.8 33.5 4.0 35.6 268.4 DAYS WITH PRECIPITATION >=10 3 0 0 1 0 0 0 0 0 1 0 1 6 DAYS WITH PRECIPITATION >= 5 4 2 6 4 0 0 0 0 0 2 0 2 20 DAYS WITH PRECIPITATION >= 1 8 7 9 8 3 2 0 0 0 3 2 4 46 DAYS WITH PRECIPITATION 10 7 12 12 5 3 4 3 3 6 4 8 77 GREATEST DAILY PRECIPITATION 17.0 9.0 8.0 10.0 3.5 3.0 0.4 0.7 0.4 23.0 2.0 21.2 23.0 DAY 23 19 7 29 26 13 11 29 19 14 10 25 DAY WITH THUNDER STORM 0 0 1 0 0 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 12 8 9 4 0 0 0 0 0 2 1 8 44 DAYS WITH DUST 0 0 0 1 2 0 0 0 1 1 0 1 6 WIND DIRECTION (PREVAILING) 135 180 135 135 135 90 90 90 90 90 90 90 90 PREVAILING WIND SPEED(KNOTS) 15.9 14.9 13.1 13.6 14.8 14.2 13.6 11.9 13.5 10.6 9.0 10.6 12.6 PREVAILING WIND PERCENT 10.9 19.2 23.0 21.7 17.7 37.5 41.5 44.4 35.0 28.6 8.3 19.0 19.5 CALMS PERCENT OF WIND 76.0 57.6 54.8 58.8 49.6 55.0 52.0 52.0 59.2 64.1 81.3 69.8 60.7 NO. OF WIND OBSERVATION 229 224 248 240 248 240 248 248 240 248 240 248 2901 VECTOR WIND DIRECTION (MEAN) 155 173 164 168 142 84 79 76 85 93 165 158 122 VECTOR WIND MAGNITUDE(KNOTS) 2.4 5.1 5.3 5.7 5.4 5.5 6.5 5.6 4.8 2.7 0.9 1.3 3.2 WIND STEADINESES (MEAN %) 85.7 86.4 86.9 90.5 69.2 87.3 98.5 98.2 87.3 69.2 34.6 29.5 60.4 WIND SPEED (MEAN KNOTS) 2.8 5.9 6.1 6.3 7.8 6.3 6.6 5.7 5.5 3.9 2.6 4.4 5.3 FASTEST WIND DIRECTION 130 190 210 190 190 90 80 80 90 210 30 240 190 FASTEST WIND SPEED (KNOTS) 35 35 35 49 58 39 29 29 29 29 39 58 58 DAY 5 18 1 12 2 30 5 25 14 25 10 5 DAYS WITH SKY CLEAR (0-2)/8 12 8 13 8 17 22 18 11 21 12 9 9 160 DAYS WITH P.CLOUDY (3-6)/8 12 11 8 12 6 8 10 13 5 12 16 10 123 DAYS WITH CLOUDY (7-8)/8 7 9 10 10 8 0 3 7 4 7 5 12 82 DAYS WITH VISIBILITY =< 2 KM 10 7 12 16 15 9 3 11 10 15 11 17 136 DURATION OF SUNSHINE HOURS ****** ****** 196.9 155.2 ****** 332.0 293.4 221.1 235.4 182.3 179.5 100.7 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 869.1 866.0 870.1 864.9 867.2 865.6 866.7 867.9 867.7 870.9 870.2 869.5 868.0 MAX. QFE PRESSURE IN HPA 877.0 876.4 883.0 872.4 874.5 871.7 872.0 873.8 873.8 881.0 879.0 877.5 883.0 DAY-HOUR 26- 6 8- 6 16-18 24-21 15-18 30- 6 31- 6 29- 6 16- 6 15- 6 22- 6 28- 6 MIN. QFE PRESSURE IN HPA 858.0 853.0 861.5 855.6 855.2 857.6 860.0 862.2 860.2 862.8 860.0 862.0 853.0 DAY-HOUR 17-12 15-15 31-21 1-12 2-12 26-15 27-12 7-12 13-12 31-21 9-12 22-12 MEAN QNH PRESSURE IN HPA 1019.7 1016.3 1020.9 1015.0 1017.6 1015.7 1017.0 1018.3 1018.2 1021.8 1021.0 1020.2 1018.5 MAX. QNH PRESSURE IN HPA 1028.8 1028.1 1035.6 1023.5 1025.9 1022.7 1023.1 1025.1 1025.1 1033.3 1031.0 1029.3 1035.6 DAY-HOUR 26- 6 8- 6 16-18 24-21 15-18 30- 6 31- 6 29- 6 16- 6 15- 6 22- 6 28- 6 MIN. QNH PRESSURE IN HPA 1007.1 1001.4 1011.1 1004.4 1003.9 1006.7 1009.4 1011.9 1009.6 1012.6 1009.4 1011.7 1001.4 DAY-HOUR 17-12 15-15 31-21 1-12 2-12 26-15 27-12 7-12 13-12 31-21 9-12 22-12 MEAN QFF PRESSURE IN HPA 1029.0 1022.7 1023.5 1014.4 1014.4 1009.3 1010.1 1012.3 1012.7 1019.7 1020.5 1024.9 1017.8 MAX. QFF PRESSURE IN HPA 1046.7 1038.6 1045.6 1028.9 1026.2 1018.1 1018.9 1020.3 1021.3 1036.1 1034.1 1043.1 1046.7 DAY-HOUR 8- 6 5- 6 16-18 3- 3 15-18 30- 3 31- 6 29-18 16- 6 15- 6 14- 6 28-15 MIN. QFF PRESSURE IN HPA 1009.6 1004.2 1012.2 1002.0 997.8 1000.1 999.0 1004.4 999.5 1007.2 1003.0 1011.4 997.8 DAY-HOUR 4-12 15-12 11-12 29- 0 2- 9 27- 0 27-12 7-12 13-21 31-21 9-12 5- 6 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 868.9 865.9 869.8 864.6 867.1 865.9 866.7 868.0 867.8 870.8 870.0 869.4 867.9 MAX. QFE PRESSURE IN HPA 876.0 876.0 882.0 872.0 873.8 870.0 871.0 873.0 872.5 879.7 878.0 876.3 882.0 DAY 9 8 17 25 16 30 17 29 16 15 22 28 MIN. QFE PRESSURE IN HPA 860.0 854.4 862.5 859.0 859.0 858.3 863.0 863.0 862.0 863.2 862.0 865.0 854.4 DAY 4 16 1 29 2 27 27 7 5 26 1 17 MEAN QNH PRESSURE IN HPA 1019.5 1016.1 1020.6 1014.6 1017.5 1016.1 1017.0 1018.5 1018.3 1021.7 1020.8 1020.1 1018.4 MAX. QNH PRESSURE IN HPA 1027.6 1027.6 1034.4 1023.1 1025.1 1020.8 1021.9 1024.2 1023.6 1031.8 1029.9 1028.0 1034.4 DAY 9 8 17 25 16 30 17 29 16 15 22 28 MIN. QNH PRESSURE IN HPA 1009.4 1003.0 1012.2 1008.3 1008.3 1007.5 1012.8 1012.8 1011.7 1013.0 1011.7 1015.1 1003.0 DAY 4 16 1 29 2 27 27 7 5 26 1 17 MEAN QFF PRESSURE IN HPA 1027.8 1022.2 1022.8 1013.8 1014.4 1009.8 1010.2 1012.5 1012.5 1019.3 1019.6 1024.0 1017.4 MAX. QFF PRESSURE IN HPA 1041.3 1035.0 1044.4 1026.1 1025.0 1016.9 1015.6 1019.1 1019.9 1035.3 1032.2 1040.9 1044.4 DAY 8 8 17 3 16 30 31 30 16 15 14 28 MIN. QFF PRESSURE IN HPA 1010.7 1005.1 1012.7 1002.0 1002.8 1000.1 1003.9 1006.5 1000.7 1009.9 1006.4 1012.9 1000.1 DAY 4 16 1 29 2 27 27 7 14 26 1 5 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 868.8 865.9 870.1 864.9 867.9 866.6 867.2 868.2 868.2 871.2 870.2 869.4 868.2 MAX. QFE PRESSURE IN HPA 876.0 876.0 882.0 871.8 873.8 871.0 871.2 873.2 873.0 880.2 878.4 876.3 882.0 DAY 26 8 17 25 16 30 31 29 16 15 23 28 MIN. QFE PRESSURE IN HPA 859.0 855.7 862.5 858.8 857.8 858.6 863.0 863.5 862.2 865.0 863.0 864.0 855.7 DAY 23 16 1 1 2 27 27 7 5 26 1 17 MEAN QNH PRESSURE IN HPA 1019.4 1016.1 1020.9 1015.0 1018.4 1016.9 1017.6 1018.8 1018.8 1022.1 1021.0 1020.1 1018.8 MAX. QNH PRESSURE IN HPA 1027.6 1027.6 1034.4 1022.8 1025.1 1021.9 1022.2 1024.4 1024.2 1032.4 1030.3 1028.0 1034.4 DAY 26 8 17 25 16 30 31 29 16 15 23 28 MIN. QNH PRESSURE IN HPA 1008.3 1004.5 1012.2 1008.0 1006.9 1007.8 1012.8 1013.4 1011.9 1015.1 1012.8 1014.0 1004.5 DAY 23 16 1 1 2 27 27 7 5 26 1 17 MEAN QFF PRESSURE IN HPA 1029.4 1022.9 1023.9 1015.2 1016.1 1011.4 1011.3 1013.5 1014.6 1021.1 1021.6 1025.4 1018.9 MAX. QFF PRESSURE IN HPA 1045.2 1035.5 1044.8 1028.9 1025.3 1018.1 1017.5 1019.2 1021.3 1035.6 1033.7 1041.3 1045.2 DAY 26 8 17 3 16 30 31 29 16 15 14 29 MIN. QFF PRESSURE IN HPA 1010.5 1008.0 1012.2 1003.6 1002.1 1001.4 1005.5 1007.5 1005.2 1012.4 1007.8 1012.5 1001.4 DAY 4 15 11 12 2 27 27 7 14 26 9 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 869.8 866.8 871.1 865.8 868.0 866.7 867.5 868.7 868.9 872.0 871.2 870.1 868.9 MAX. QFE PRESSURE IN HPA 877.0 876.4 882.2 872.0 874.0 871.7 872.0 873.8 873.8 881.0 879.0 877.5 882.2 DAY 26 8 17 25 16 30 31 29 16 15 22 28 MIN. QFE PRESSURE IN HPA 860.1 856.0 863.5 858.0 856.8 859.2 862.5 864.0 863.0 866.4 864.0 864.6 856.0 DAY 4 15 1 1 2 27 27 7 5 25 9 22 MEAN QNH PRESSURE IN HPA 1020.5 1017.2 1022.0 1016.0 1018.5 1017.0 1018.0 1019.3 1019.5 1023.1 1022.2 1020.9 1019.5 MAX. QNH PRESSURE IN HPA 1028.8 1028.1 1034.7 1023.1 1025.3 1022.7 1023.1 1025.1 1025.1 1033.3 1031.0 1029.3 1034.7 DAY 26 8 17 25 16 30 31 29 16 15 22 28 MIN. QNH PRESSURE IN HPA 1009.5 1004.8 1013.4 1007.1 1005.8 1008.5 1012.2 1014.0 1012.8 1016.7 1014.0 1014.6 1004.8 DAY 4 15 1 1 2 27 27 7 5 25 9 22 MEAN QFF PRESSURE IN HPA 1030.6 1024.2 1024.9 1015.5 1015.3 1010.4 1010.9 1013.2 1014.0 1021.1 1022.4 1026.1 1019.0 MAX. QFF PRESSURE IN HPA 1046.7 1038.6 1044.9 1028.8 1025.0 1018.1 1018.9 1020.1 1021.3 1036.1 1034.1 1042.5 1046.7 DAY 8 5 17 3 16 30 31 29 16 15 14 29 MIN. QFF PRESSURE IN HPA 1011.5 1006.2 1013.1 1004.8 1000.7 1001.7 1003.2 1007.3 1004.5 1012.5 1008.6 1011.4 1000.7 DAY 4 15 11 12 2 27 27 7 14 25 9 5 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 869.3 866.4 870.5 865.0 867.0 865.3 866.7 867.8 867.6 871.1 870.2 869.6 868.0 MAX. QFE PRESSURE IN HPA 876.6 876.0 881.0 871.0 873.3 870.0 871.0 873.0 873.4 880.8 877.8 877.0 881.0 DAY 26 8 16 25 15 30 31 29 16 15 23 28 MIN. QFE PRESSURE IN HPA 859.7 855.0 863.0 856.8 855.4 859.0 861.2 863.2 861.5 865.8 861.7 863.8 855.0 DAY 4 15 1 1 2 27 27 7 5 25 9 22 MEAN QNH PRESSURE IN HPA 1019.9 1016.7 1021.3 1015.1 1017.4 1015.4 1017.0 1018.2 1018.1 1022.1 1021.0 1020.4 1018.6 MAX. QNH PRESSURE IN HPA 1028.3 1027.6 1033.3 1021.9 1024.5 1020.8 1021.9 1024.2 1024.7 1033.1 1029.7 1028.8 1033.3 DAY 26 8 16 25 15 30 31 29 16 15 23 28 MIN. QNH PRESSURE IN HPA 1009.1 1003.7 1012.8 1005.8 1004.2 1008.3 1010.8 1013.0 1011.1 1016.0 1011.3 1013.7 1003.7 DAY 4 15 1 1 2 27 27 7 5 25 9 22 MEAN QFF PRESSURE IN HPA 1028.6 1022.9 1023.5 1013.8 1013.6 1008.3 1009.6 1011.7 1011.6 1019.2 1019.6 1024.6 1017.3 MAX. QFF PRESSURE IN HPA 1044.7 1036.3 1042.2 1026.2 1024.6 1015.9 1017.4 1019.7 1020.3 1035.4 1029.6 1041.4 1044.7 DAY 8 5 17 3 15 30 31 29 16 15 13 28 MIN. QFF PRESSURE IN HPA 1009.9 1005.4 1012.4 1004.0 997.8 1000.5 1000.3 1005.2 1002.7 1011.2 1005.0 1014.8 997.8 DAY 4 15 1 28 2 15 27 7 14 31 9 17 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 868.3 865.3 869.4 864.1 866.2 864.2 865.8 866.8 866.4 870.1 869.1 868.6 867.0 MAX. QFE PRESSURE IN HPA 875.6 874.5 881.0 870.0 873.2 868.5 870.0 872.5 872.5 880.2 876.6 876.0 881.0 DAY 26 8 16 25 15 7 31 29 16 15 23 28 MIN. QFE PRESSURE IN HPA 858.0 853.2 863.2 855.6 855.2 858.0 860.0 862.2 860.2 864.2 860.0 862.0 853.2 DAY 17 15 24 1 2 15 27 7 13 25 9 22 MEAN QNH PRESSURE IN HPA 1018.8 1015.4 1020.1 1014.1 1016.4 1014.2 1016.0 1017.1 1016.7 1020.9 1019.8 1019.2 1017.4 MAX. QNH PRESSURE IN HPA 1027.2 1025.9 1033.3 1020.8 1024.4 1019.1 1020.8 1023.6 1023.6 1032.4 1028.3 1027.6 1033.3 DAY 26 8 16 25 15 7 31 29 16 15 23 28 MIN. QNH PRESSURE IN HPA 1007.1 1001.7 1013.0 1004.4 1003.9 1007.1 1009.4 1011.9 1009.6 1014.2 1009.4 1011.7 1001.7 DAY 17 15 24 1 2 15 27 7 13 25 9 22 MEAN QFF PRESSURE IN HPA 1027.2 1021.3 1022.2 1013.1 1013.0 1007.8 1009.0 1010.8 1010.7 1018.4 1018.4 1023.2 1016.3 MAX. QFF PRESSURE IN HPA 1042.0 1033.1 1042.5 1025.3 1024.3 1014.7 1016.2 1019.2 1019.7 1034.6 1029.1 1040.0 1042.5 DAY 8 7 16 3 15 7 31 29 16 15 13 28 MIN. QFF PRESSURE IN HPA 1009.6 1004.2 1012.2 1002.5 998.3 1000.6 999.0 1004.4 1001.7 1009.6 1003.0 1013.2 998.3 DAY 4 15 11 1 2 15 27 7 13 31 9 6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 868.9 865.6 869.5 864.4 866.4 864.1 865.7 866.9 866.8 870.3 869.8 869.3 867.3 MAX. QFE PRESSURE IN HPA 876.0 875.0 882.1 870.2 873.3 869.3 870.0 872.5 872.8 880.6 877.2 877.0 882.1 DAY 26 7 16 24 15 4 31 29 16 15 22 28 MIN. QFE PRESSURE IN HPA 858.0 853.0 863.0 857.0 857.8 857.6 860.4 863.0 860.4 864.0 861.0 863.0 853.0 DAY 17 15 11 1 2 26 27 6 13 25 9 17 MEAN QNH PRESSURE IN HPA 1019.5 1015.8 1020.2 1014.4 1016.6 1014.1 1015.9 1017.2 1017.1 1021.2 1020.6 1020.0 1017.7 MAX. QNH PRESSURE IN HPA 1027.6 1026.5 1034.6 1021.0 1024.5 1020.0 1020.8 1023.6 1024.0 1032.8 1029.0 1028.8 1034.6 DAY 26 7 16 24 15 4 31 29 16 15 22 28 MIN. QNH PRESSURE IN HPA 1007.1 1001.4 1012.8 1006.0 1006.9 1006.7 1009.9 1012.8 1009.9 1014.0 1010.5 1012.8 1001.4 DAY 17 15 11 1 2 26 27 6 13 25 9 17 MEAN QFF PRESSURE IN HPA 1029.7 1022.4 1023.2 1014.5 1014.2 1008.4 1009.4 1011.8 1012.6 1020.0 1021.0 1025.5 1017.7 MAX. QFF PRESSURE IN HPA 1045.7 1034.6 1044.7 1028.0 1024.9 1015.1 1016.8 1019.6 1021.0 1035.1 1031.3 1043.1 1045.7 DAY 8 4 16 3 15 29 31 29 16 15 13 28 MIN. QFF PRESSURE IN HPA 1011.8 1004.2 1012.2 1002.4 1001.1 1000.8 1001.7 1006.5 1002.8 1010.7 1004.9 1014.8 1000.8 DAY 4 15 11 28 2 26 27 7 13 31 9 6 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 869.5 866.1 870.4 865.4 867.6 865.7 867.1 868.2 868.1 871.0 870.5 869.7 868.3 MAX. QFE PRESSURE IN HPA 876.4 876.0 883.0 872.2 874.5 870.5 871.0 873.0 873.5 881.0 877.8 877.0 883.0 DAY 26 7 16 24 15 4 16 29 16 15 22 28 MIN. QFE PRESSURE IN HPA 859.0 853.7 863.5 858.8 859.5 859.0 862.8 863.6 861.0 863.0 862.6 863.5 853.7 DAY 17 15 31 1 12 26 27 6 13 25 9 17 MEAN QNH PRESSURE IN HPA 1020.2 1016.4 1021.2 1015.5 1018.0 1015.9 1017.4 1018.8 1018.7 1021.9 1021.3 1020.5 1018.8 MAX. QNH PRESSURE IN HPA 1028.1 1027.6 1035.6 1023.3 1025.9 1021.4 1021.9 1024.2 1024.8 1033.3 1029.7 1028.8 1035.6 DAY 26 7 16 24 15 4 16 29 16 15 22 28 MIN. QNH PRESSURE IN HPA 1008.3 1002.2 1013.4 1008.0 1008.8 1008.3 1012.6 1013.5 1010.5 1012.8 1012.4 1013.4 1002.2 DAY 17 15 31 1 12 26 27 6 13 25 9 17 MEAN QFF PRESSURE IN HPA 1030.1 1023.2 1024.1 1015.0 1014.7 1009.2 1010.3 1012.7 1013.2 1019.8 1021.4 1025.9 1018.3 MAX. QFF PRESSURE IN HPA 1044.8 1036.9 1045.6 1026.5 1026.2 1015.7 1018.1 1020.3 1020.8 1035.2 1032.2 1042.5 1045.6 DAY 7 4 16 3 15 29 31 29 16 15 13 28 MIN. QFF PRESSURE IN HPA 1013.3 1005.1 1014.6 1004.2 1003.6 1000.8 1002.9 1007.5 1001.5 1008.5 1006.8 1014.7 1000.8 DAY 4 15 24 28 2 26 27 6 13 25 9 6 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 869.3 866.2 870.2 865.3 867.6 866.0 867.1 868.3 868.2 870.9 870.5 869.7 868.3 MAX. QFE PRESSURE IN HPA 876.0 876.0 883.0 872.4 874.2 870.6 871.0 873.0 872.8 880.5 878.0 876.2 883.0 DAY 8 7 16 24 15 4 16 28 15 15 22 28 MIN. QFE PRESSURE IN HPA 859.8 854.7 861.5 860.3 859.0 858.8 864.0 863.6 861.0 862.8 863.0 865.0 854.7 DAY 17 15 31 1 12 26 13 6 13 31 8 16 MEAN QNH PRESSURE IN HPA 1020.0 1016.4 1021.0 1015.5 1018.0 1016.3 1017.4 1018.8 1018.7 1021.9 1021.3 1020.4 1018.8 MAX. QNH PRESSURE IN HPA 1027.6 1027.6 1035.6 1023.5 1025.6 1021.5 1021.9 1024.2 1024.0 1032.7 1029.9 1027.8 1035.6 DAY 8 7 16 24 15 4 16 28 15 15 22 28 MIN. QNH PRESSURE IN HPA 1009.2 1003.4 1011.1 1009.7 1008.3 1008.0 1014.0 1013.5 1010.5 1012.6 1012.8 1015.1 1003.4 DAY 17 15 31 1 12 26 13 6 13 31 8 16 MEAN QFF PRESSURE IN HPA 1028.7 1022.4 1023.2 1014.2 1014.2 1009.2 1010.1 1012.4 1012.4 1019.0 1020.0 1024.9 1017.6 MAX. QFF PRESSURE IN HPA 1042.2 1036.1 1045.6 1025.7 1025.6 1015.8 1017.2 1019.5 1019.8 1034.7 1031.8 1041.2 1045.6 DAY 7 4 16 2 15 29 31 29 15 15 13 27 MIN. QFF PRESSURE IN HPA 1011.0 1005.9 1012.9 1003.8 1002.0 1000.1 1003.8 1006.9 999.5 1007.2 1006.3 1011.9 999.5 DAY 3 15 31 28 2 26 27 6 13 31 8 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -6.5 -3.3 1.9 9.6 12.1 15.5 18.9 16.7 13.3 11.2 4.9 -2.4 7.7 MINIMUN AIR TEMPERATURE (C) -12.4 -7.8 -2.1 2.9 5.6 7.9 11.7 10.4 6.9 5.7 1.3 -7.3 1.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 30 19 9 0 0 0 0 0 0 0 1 21 80 DAYS WITH FREEZING MIN.<= 0 31 24 23 8 0 0 0 0 1 2 10 26 125 TEMPERATURE RECORDS LOWEST(C) -24.0 -21.6 -13.2 -3.6 0.6 4.0 7.0 7.0 0.0 -1.4 -6.0 -17.4 -24.0 DAY 25 10 11 15 7 2 15 14 28 17 24 18 MAXIMUM AIR TEMPERATURE (C) -0.9 1.9 7.4 17.4 18.6 22.1 25.3 23.0 20.9 18.0 11.0 3.1 14.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 6 0 0 0 0 0 6 DAYS WITH MAXIMUM TEMP. <= 0 18 12 4 0 0 0 0 0 0 0 0 7 41 TEMPERATURE RECORDS HIGHEST(C) 5.6 11.2 22.4 25.2 26.5 28.5 35.2 29.2 28.6 24.0 20.2 12.2 35.2 DAY 31 28 30 21 2 30 7 1 18 26 1 1 DIF. BETWEEN (MAX.-MIN.) (C) 11.5 9.7 9.5 14.5 13.0 14.2 13.6 12.6 14.0 12.3 9.7 10.4 12.1 MEAN DAILY TEMP. (MDT) (C) -6.6 -2.9 2.6 10.2 12.1 15.0 18.5 16.7 13.9 11.8 6.2 -2.1 7.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.0 4.3 0.0 0.0 0.0 0.0 0.0 4.3 HEATING DEG. DAYS(BASE 18 0C) 763.9 586.5 476.8 235.4 179.6 91.7 26.7 49.1 125.8 191.2 355.3 622.6 3704.7 DEWPOINT (MEAN C) -8.5 -6.0 -0.4 4.7 7.1 10.8 12.8 12.1 9.3 6.4 2.4 -5.3 3.8 MIXING RATIO (G/KG) 2.49 3.05 4.43 6.38 7.47 9.57 10.93 10.52 8.71 7.13 5.38 3.17 6.60 VAPOUR PRESSURE (HPA) 3.46 4.23 6.13 8.79 10.25 13.12 14.93 14.39 11.97 9.85 7.45 4.37 9.08 SATURATION DEF. (HPA) 0.58 1.14 1.44 4.11 4.71 5.46 8.02 5.33 4.19 4.10 1.54 1.18 3.48 RELATIVE HUMIDITY (MEAN %) 86 83 88 76 76 77 72 77 80 77 87 82 80 RELATIVE HUMIDITY (MAX. %) 93 95 98 98 98 97 94 95 97 94 97 93 96 RELATIVE HUMIDITY (MIN. %) 76 65 70 46 52 56 50 56 51 50 66 65 59 RELATIVE HUMIDITY (MEAN% 03UTC) 86 90 96 93 92 96 91 92 95 91 95 87 92 RELATIVE HUMIDITY (MEAN% 09UTC) 88 79 77 51 57 58 52 59 54 54 72 78 65 RELATIVE HUMIDITY (MEAN% 15UTC) 86 80 82 70 68 68 65 73 80 77 87 78 76 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 15.8 22.1 93.8 12.7 53.7 13.2 4.0 0.4 0.0 11.6 14.8 33.9 276.0 DAYS WITH PRECIPITATION >=10 0 1 4 0 3 0 0 0 0 0 0 0 8 DAYS WITH PRECIPITATION >= 5 1 1 10 0 5 1 0 0 0 0 0 3 21 DAYS WITH PRECIPITATION >= 1 6 3 15 6 7 2 2 0 0 6 5 6 58 DAYS WITH PRECIPITATION 8 10 15 12 11 5 3 2 0 7 7 10 90 GREATEST DAILY PRECIPITATION 7.0 13.6 13.6 3.0 11.8 9.0 2.0 0.2 0.0 2.6 4.0 9.0 13.6 DAY 23 21 10 25 14 7 17 19 ** 22 4 5 DAY WITH THUNDER STORM 0 0 0 1 0 1 0 0 0 0 0 0 2 DAYS WITH SNOW OR SLEET 6 8 14 0 0 0 0 0 0 0 0 8 36 DAYS WITH DUST 0 0 0 0 1 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 90 90 90 90 90 90 90 90 90 90 90 180 90 PREVAILING WIND SPEED(KNOTS) 11.9 11.3 12.8 10.0 11.3 10.6 11.4 9.6 9.2 8.9 9.5 13.5 10.4 PREVAILING WIND PERCENT 8.5 17.4 27.0 20.8 19.8 32.1 45.3 41.5 32.1 27.0 23.8 19.4 25.4 CALMS PERCENT OF WIND 74.2 56.3 51.2 54.6 61.3 62.5 48.2 56.5 66.3 61.7 67.9 56.9 59.8 NO. OF WIND OBSERVATION 248 224 248 240 248 240 247 248 240 248 240 248 2919 VECTOR WIND DIRECTION (MEAN) 182 169 104 158 114 77 83 87 89 106 107 187 115 VECTOR WIND MAGNITUDE(KNOTS) 1.2 3.8 3.3 2.5 1.4 3.6 5.4 4.1 2.9 2.0 2.0 3.7 2.3 WIND STEADINESES (MEAN %) 37.5 60.3 62.3 42.4 31.8 94.7 94.7 100.0 96.7 55.6 66.7 74.0 52.3 WIND SPEED (MEAN KNOTS) 3.2 6.3 5.3 5.9 4.4 3.8 5.7 4.1 3.0 3.6 3.0 5.0 4.4 FASTEST WIND DIRECTION 180 210 80 190 230 70 90 90 80 90 220 190 210 FASTEST WIND SPEED (KNOTS) 29 39 33 31 29 21 23 19 19 33 29 29 39 DAY 31 16 9 16 17 3 15 26 15 31 29 8 DAYS WITH SKY CLEAR (0-2)/8 11 9 4 7 12 19 23 22 17 11 5 15 155 DAYS WITH P.CLOUDY (3-6)/8 12 14 10 16 14 10 6 6 9 10 9 8 124 DAYS WITH CLOUDY (7-8)/8 8 5 17 7 5 1 2 3 4 10 16 8 86 DAYS WITH VISIBILITY =< 2 KM 17 11 18 9 10 5 5 8 19 13 18 5 138 DURATION OF SUNSHINE HOURS 111.6 143.8 82.0 191.4 238.1 295.0 306.1 242.9 211.9 170.1 107.9 99.2 2200.0 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 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 867.8 868.2 866.9 866.1 864.2 866.4 864.6 865.9 868.1 869.4 869.3 863.5 866.7 MAX. QFE PRESSURE IN HPA 876.0 877.6 874.0 876.0 871.2 874.0 872.0 870.0 875.0 875.0 875.0 872.5 877.6 DAY-HOUR 11- 6 22- 6 29- 6 29- 3 4-18 17- 6 11- 9 13- 6 15-18 12-18 24- 6 16-18 MIN. QFE PRESSURE IN HPA 859.6 858.2 855.0 855.0 854.0 856.4 855.5 860.0 858.8 863.0 862.0 852.8 852.8 DAY-HOUR 3-15 4-12 6-12 4-12 16-15 10-15 7-12 29-12 19-12 30-12 4- 9 31-21 MEAN QNH PRESSURE IN HPA 1018.3 1018.8 1017.2 1016.3 1014.2 1016.6 1014.7 1016.1 1018.6 1020.1 1020.0 1013.3 1017.0 MAX. QNH PRESSURE IN HPA 1027.6 1029.4 1025.3 1027.6 1022.2 1025.3 1023.1 1020.8 1026.5 1026.5 1026.5 1023.6 1029.4 DAY-HOUR 11- 6 22- 6 29- 6 29- 3 4-18 17- 6 11- 9 13- 6 15-18 12-18 24- 6 16-18 MIN. QNH PRESSURE IN HPA 1008.9 1007.4 1003.7 1003.7 1002.6 1005.3 1004.3 1009.4 1008.0 1012.8 1011.7 1001.2 1001.2 DAY-HOUR 3-15 4-12 6-12 4-12 16-15 10-15 7-12 29-12 19-12 30-12 4- 9 31-21 MEAN QFF PRESSURE IN HPA 1026.2 1024.6 1019.7 1014.2 1010.5 1011.0 1007.1 1009.6 1014.2 1017.1 1020.7 1018.3 1016.1 MAX. QFF PRESSURE IN HPA 1040.9 1039.4 1034.4 1030.0 1022.2 1020.2 1017.9 1015.6 1023.8 1024.9 1031.0 1034.0 1040.9 DAY-HOUR 1- 6 13- 6 11- 6 29- 3 4-18 17- 6 11- 6 27- 6 16- 3 13- 6 24- 6 17-18 MIN. QFF PRESSURE IN HPA 1010.5 1009.7 1007.4 1000.3 996.7 999.3 994.9 1002.8 1000.3 1006.2 1008.4 1002.3 994.9 DAY-HOUR 31-12 27- 0 6-12 4-12 16-15 10-21 7-15 1-18 19-12 26- 0 30-21 1-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 868.0 867.9 866.5 866.0 864.0 866.0 864.5 865.8 868.0 869.4 869.3 863.5 866.6 MAX. QFE PRESSURE IN HPA 875.0 874.5 872.0 874.2 870.2 872.0 869.7 869.0 874.0 874.5 874.4 872.0 875.0 DAY 11 22 20 29 5 17 11 13 16 13 27 17 MIN. QFE PRESSURE IN HPA 859.8 859.0 856.0 857.0 855.8 857.0 858.5 862.0 861.0 863.6 863.0 858.0 855.8 DAY 27 4 7 5 17 11 7 11 21 26 5 4 MEAN QNH PRESSURE IN HPA 1018.5 1018.4 1016.8 1016.2 1013.9 1016.3 1014.5 1016.0 1018.5 1020.1 1019.9 1013.3 1016.9 MAX. QNH PRESSURE IN HPA 1026.5 1025.9 1023.1 1025.6 1021.0 1023.1 1020.4 1019.6 1025.3 1025.9 1025.8 1023.1 1026.5 DAY 11 22 20 29 5 17 11 13 16 13 27 17 MIN. QNH PRESSURE IN HPA 1009.2 1008.3 1004.8 1006.0 1004.6 1006.0 1007.7 1011.7 1010.5 1013.5 1012.8 1007.1 1004.6 DAY 27 4 7 5 17 11 7 11 21 26 5 4 MEAN QFF PRESSURE IN HPA 1025.9 1024.0 1018.8 1013.9 1010.2 1010.9 1007.0 1009.6 1013.7 1016.6 1020.1 1017.7 1015.7 MAX. QFF PRESSURE IN HPA 1037.1 1035.7 1031.1 1026.5 1020.6 1018.6 1015.7 1014.8 1021.8 1023.1 1028.6 1032.6 1037.1 DAY 1 22 11 29 5 18 12 27 16 13 27 17 MIN. QFF PRESSURE IN HPA 1012.2 1009.7 1009.1 1002.8 998.5 1000.1 997.9 1004.3 1003.3 1006.2 1011.4 1006.5 997.9 DAY 31 27 7 10 22 11 8 2 21 26 5 1 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 867.7 868.0 866.7 866.3 865.0 867.2 865.3 866.3 868.4 869.6 869.3 863.1 866.9 MAX. QFE PRESSURE IN HPA 874.8 875.8 872.4 876.0 871.2 873.0 870.5 869.5 874.0 874.5 874.4 871.0 876.0 DAY 11 22 29 29 25 17 11 13 16 13 27 17 MIN. QFE PRESSURE IN HPA 860.0 858.5 856.5 857.9 856.0 859.0 859.2 863.0 861.0 863.8 863.0 857.0 856.0 DAY 30 4 7 5 22 11 7 11 21 26 4 4 MEAN QNH PRESSURE IN HPA 1018.2 1018.6 1017.0 1016.6 1015.1 1017.5 1015.5 1016.6 1019.0 1020.3 1020.0 1013.0 1017.3 MAX. QNH PRESSURE IN HPA 1026.2 1027.4 1023.5 1027.6 1022.2 1024.2 1021.4 1020.2 1025.3 1025.9 1025.8 1021.9 1027.6 DAY 11 22 29 29 25 17 11 13 16 13 27 17 MIN. QNH PRESSURE IN HPA 1009.4 1007.7 1005.4 1007.0 1004.8 1008.3 1008.5 1012.8 1010.5 1013.7 1012.8 1006.0 1004.8 DAY 30 4 7 5 22 11 7 11 21 26 4 4 MEAN QFF PRESSURE IN HPA 1026.6 1025.0 1020.0 1015.4 1012.0 1012.6 1008.7 1011.1 1015.8 1018.2 1021.5 1018.4 1017.1 MAX. QFF PRESSURE IN HPA 1037.3 1037.7 1031.1 1030.0 1021.7 1019.2 1016.3 1015.4 1023.8 1024.3 1029.1 1032.3 1037.7 DAY 1 22 11 29 25 17 11 27 16 13 27 17 MIN. QFF PRESSURE IN HPA 1012.3 1010.5 1010.4 1003.7 998.9 1002.4 1000.5 1006.0 1005.3 1007.4 1012.6 1005.3 998.9 DAY 31 27 7 10 22 11 7 11 19 26 4 1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 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 868.6 869.1 867.7 867.1 865.1 867.3 865.7 867.0 869.1 870.5 870.2 864.0 867.6 MAX. QFE PRESSURE IN HPA 876.0 877.6 874.0 875.2 871.0 874.0 871.5 870.0 874.5 875.0 875.0 871.8 877.6 DAY 11 22 29 28 4 17 11 13 15 13 24 17 MIN. QFE PRESSURE IN HPA 860.0 858.8 857.0 858.5 856.0 859.8 859.0 863.0 861.3 865.2 863.5 856.8 856.0 DAY 31 4 6 4 22 11 7 29 19 26 4 31 MEAN QNH PRESSURE IN HPA 1019.2 1019.8 1018.1 1017.5 1015.2 1017.7 1015.9 1017.3 1019.7 1021.3 1021.0 1014.0 1018.1 MAX. QNH PRESSURE IN HPA 1027.6 1029.4 1025.3 1026.7 1021.9 1025.3 1022.5 1020.8 1025.9 1026.5 1026.5 1022.8 1029.4 DAY 11 22 29 28 4 17 11 13 15 13 24 17 MIN. QNH PRESSURE IN HPA 1009.4 1008.0 1006.0 1007.7 1004.8 1009.2 1008.3 1012.8 1010.9 1015.3 1013.4 1005.8 1004.8 DAY 31 4 6 4 22 11 7 29 19 26 4 31 MEAN QFF PRESSURE IN HPA 1027.9 1026.1 1021.2 1015.6 1011.5 1011.7 1008.1 1010.6 1015.4 1018.5 1022.3 1019.4 1017.4 MAX. QFF PRESSURE IN HPA 1040.9 1039.4 1034.4 1026.1 1022.0 1020.2 1017.9 1015.6 1022.0 1024.9 1031.0 1032.5 1040.9 DAY 1 13 11 29 4 17 11 27 16 13 24 18 MIN. QFF PRESSURE IN HPA 1011.7 1010.4 1010.4 1004.3 998.9 1003.3 998.3 1005.6 1005.4 1009.0 1012.6 1006.3 998.3 DAY 31 4 6 4 22 11 7 1 19 26 4 1 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 868.3 868.8 867.3 866.1 864.2 866.5 864.8 865.9 868.3 869.7 869.3 863.6 866.9 MAX. QFE PRESSURE IN HPA 875.2 877.2 873.0 874.8 871.0 873.5 872.0 869.0 874.3 874.2 874.0 871.0 877.2 DAY 11 22 20 28 4 17 11 8 15 13 15 17 MIN. QFE PRESSURE IN HPA 860.0 859.0 856.0 857.2 855.0 858.6 857.0 861.0 860.2 864.3 862.0 855.2 855.0 DAY 31 4 6 9 22 11 7 29 19 30 4 31 MEAN QNH PRESSURE IN HPA 1018.8 1019.5 1017.7 1016.3 1014.2 1016.8 1014.9 1016.2 1018.8 1020.4 1020.0 1013.5 1017.3 MAX. QNH PRESSURE IN HPA 1026.7 1029.0 1024.2 1026.2 1021.9 1024.8 1023.1 1019.6 1025.7 1025.6 1025.3 1021.9 1029.0 DAY 11 22 20 28 4 17 11 8 15 13 15 17 MIN. QNH PRESSURE IN HPA 1009.4 1008.3 1004.8 1006.2 1003.7 1007.8 1006.0 1010.5 1009.6 1014.3 1011.7 1003.9 1003.7 DAY 31 4 6 9 22 11 7 29 19 30 4 31 MEAN QFF PRESSURE IN HPA 1026.4 1024.9 1019.8 1013.5 1010.0 1010.9 1006.8 1009.1 1013.5 1016.6 1020.0 1018.1 1015.8 MAX. QFF PRESSURE IN HPA 1035.3 1038.4 1031.5 1025.4 1021.7 1019.3 1017.8 1015.2 1021.8 1023.1 1026.9 1030.5 1038.4 DAY 11 13 11 28 4 17 11 27 16 13 24 18 MIN. QFF PRESSURE IN HPA 1011.5 1010.2 1008.6 1002.5 997.9 1002.0 996.0 1003.1 1002.2 1008.6 1009.1 1004.0 996.0 DAY 31 27 6 9 22 27 7 29 19 26 4 1 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 867.3 867.6 866.3 865.2 863.3 865.7 863.9 865.0 867.1 868.6 868.5 862.8 865.9 MAX. QFE PRESSURE IN HPA 874.0 876.0 872.0 874.0 871.0 873.0 871.0 868.0 873.4 873.0 873.3 870.0 876.0 DAY 10 22 20 28 4 17 11 8 15 12 15 17 MIN. QFE PRESSURE IN HPA 860.0 858.2 855.0 855.0 854.4 858.0 855.5 860.0 858.8 863.0 862.0 853.0 853.0 DAY 3 4 6 4 22 10 7 29 19 30 4 31 MEAN QNH PRESSURE IN HPA 1017.7 1018.0 1016.6 1015.3 1013.2 1015.9 1013.8 1015.0 1017.5 1019.2 1019.1 1012.6 1016.2 MAX. QNH PRESSURE IN HPA 1025.3 1027.6 1023.1 1025.3 1021.9 1024.2 1021.9 1018.5 1024.7 1024.2 1024.5 1020.8 1027.6 DAY 10 22 20 28 4 17 11 8 15 12 15 17 MIN. QNH PRESSURE IN HPA 1009.4 1007.4 1003.7 1003.7 1003.0 1007.1 1004.3 1009.4 1008.0 1012.8 1011.7 1001.4 1001.4 DAY 3 4 6 4 22 10 7 29 19 30 4 31 MEAN QFF PRESSURE IN HPA 1024.8 1023.4 1018.6 1012.8 1009.3 1010.3 1006.1 1008.5 1012.5 1015.7 1019.1 1016.9 1014.8 MAX. QFF PRESSURE IN HPA 1033.1 1036.2 1030.7 1024.3 1021.5 1018.9 1016.3 1013.3 1021.2 1021.1 1026.0 1029.6 1036.2 DAY 12 22 11 28 4 17 11 27 16 12 15 17 MIN. QFF PRESSURE IN HPA 1010.5 1009.7 1007.4 1000.3 998.2 1001.6 994.9 1002.8 1000.3 1007.4 1009.4 1002.3 994.9 DAY 31 27 6 4 22 10 7 29 19 30 4 1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 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 867.4 867.8 866.6 865.3 863.3 865.5 863.6 864.9 867.3 868.9 869.0 863.4 866.1 MAX. QFE PRESSURE IN HPA 874.6 875.0 872.0 874.2 871.0 873.0 871.0 868.2 873.8 874.0 873.8 871.0 875.0 DAY 10 22 20 28 4 17 11 8 15 12 26 16 MIN. QFE PRESSURE IN HPA 859.6 860.4 855.4 855.0 854.0 856.4 855.5 861.0 859.8 864.0 862.0 853.0 853.0 DAY 3 4 6 4 16 10 7 10 19 25 4 31 MEAN QNH PRESSURE IN HPA 1017.8 1018.3 1016.9 1015.5 1013.2 1015.7 1013.5 1014.9 1017.7 1019.5 1019.7 1013.3 1016.3 MAX. QNH PRESSURE IN HPA 1026.0 1026.5 1023.1 1025.6 1021.9 1024.2 1021.9 1018.7 1025.1 1025.3 1025.1 1021.9 1026.5 DAY 10 22 20 28 4 17 11 8 15 12 26 16 MIN. QNH PRESSURE IN HPA 1008.9 1009.9 1004.2 1003.7 1002.6 1005.3 1004.3 1010.5 1009.2 1014.0 1011.7 1001.4 1001.4 DAY 3 4 6 4 16 10 7 10 19 25 4 31 MEAN QFF PRESSURE IN HPA 1025.9 1024.6 1019.8 1014.0 1009.9 1010.6 1006.5 1009.2 1014.4 1017.3 1021.0 1018.8 1016.0 MAX. QFF PRESSURE IN HPA 1035.3 1036.6 1030.5 1025.5 1021.5 1019.5 1016.6 1014.0 1022.8 1023.7 1028.1 1031.8 1036.6 DAY 11 22 11 28 4 17 11 27 16 12 26 17 MIN. QFF PRESSURE IN HPA 1010.9 1011.7 1008.5 1001.2 996.7 1000.2 994.9 1003.9 1003.9 1009.8 1010.0 1004.8 994.9 DAY 31 27 6 4 16 10 7 11 19 26 4 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 867.7 868.3 867.2 866.3 864.4 866.5 864.6 866.1 868.5 869.6 869.6 863.8 866.9 MAX. QFE PRESSURE IN HPA 875.0 875.0 872.8 875.6 871.2 873.0 871.0 869.5 875.0 875.0 874.4 872.5 875.6 DAY 10 22 20 28 4 17 11 8 15 12 26 16 MIN. QFE PRESSURE IN HPA 860.0 860.5 856.0 857.0 855.0 857.0 857.5 862.0 861.0 864.0 862.0 853.0 853.0 DAY 4 3 6 4 16 10 7 5 20 25 4 31 MEAN QNH PRESSURE IN HPA 1018.2 1018.8 1017.6 1016.6 1014.4 1016.7 1014.6 1016.4 1019.0 1020.3 1020.3 1013.7 1017.2 MAX. QNH PRESSURE IN HPA 1026.5 1026.5 1024.0 1027.2 1022.2 1024.2 1021.9 1020.2 1026.5 1026.5 1025.8 1023.6 1027.2 DAY 10 22 20 28 4 17 11 8 15 12 26 16 MIN. QNH PRESSURE IN HPA 1009.4 1010.0 1004.8 1006.0 1003.7 1006.0 1006.6 1011.7 1010.5 1014.0 1011.7 1001.4 1001.4 DAY 4 3 6 4 16 10 7 5 20 25 4 31 MEAN QFF PRESSURE IN HPA 1026.7 1025.1 1020.6 1014.5 1010.8 1010.7 1006.8 1009.7 1014.7 1017.5 1021.6 1019.3 1016.5 MAX. QFF PRESSURE IN HPA 1036.6 1038.0 1030.9 1026.8 1022.2 1018.9 1016.8 1015.2 1022.5 1024.8 1028.3 1034.0 1038.0 DAY 11 12 11 28 4 17 11 26 26 12 26 17 MIN. QFF PRESSURE IN HPA 1012.1 1012.6 1009.4 1003.6 996.8 999.8 995.9 1002.8 1005.5 1008.8 1009.8 1005.2 995.9 DAY 31 27 6 4 16 10 7 1 2 25 4 31 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 867.7 868.3 866.9 866.4 864.4 866.4 864.7 866.1 868.4 869.5 869.5 863.5 866.8 MAX. QFE PRESSURE IN HPA 875.0 875.0 872.0 875.6 871.0 873.0 870.5 869.2 875.0 875.0 874.4 872.5 875.6 DAY 10 22 20 28 4 17 11 8 15 12 26 16 MIN. QFE PRESSURE IN HPA 860.0 859.5 856.0 857.0 855.8 857.0 859.0 862.0 861.0 864.0 862.0 852.8 852.8 DAY 4 3 6 4 16 10 7 5 20 25 30 31 MEAN QNH PRESSURE IN HPA 1018.1 1018.9 1017.3 1016.7 1014.4 1016.7 1014.7 1016.3 1019.0 1020.2 1020.2 1013.4 1017.2 MAX. QNH PRESSURE IN HPA 1026.5 1026.5 1023.1 1027.2 1021.9 1024.2 1021.4 1019.9 1026.5 1026.5 1025.8 1023.6 1027.2 DAY 10 22 20 28 4 17 11 8 15 12 26 16 MIN. QNH PRESSURE IN HPA 1009.4 1008.8 1004.8 1006.0 1004.6 1006.0 1008.3 1011.7 1010.5 1014.0 1011.7 1001.2 1001.2 DAY 4 3 6 4 16 10 7 5 20 25 30 31 MEAN QFF PRESSURE IN HPA 1025.6 1024.3 1019.3 1013.8 1010.3 1010.7 1006.7 1009.4 1013.8 1016.3 1020.2 1018.2 1015.7 MAX. QFF PRESSURE IN HPA 1036.8 1036.0 1030.0 1027.8 1022.0 1018.7 1016.5 1015.0 1022.2 1023.8 1028.2 1032.0 1036.8 DAY 11 12 10 28 24 17 11 19 15 12 26 17 MIN. QFF PRESSURE IN HPA 1011.6 1010.5 1008.8 1001.2 998.6 999.3 996.5 1003.5 1003.8 1007.6 1008.4 1004.2 996.5 DAY 31 26 6 9 21 10 7 1 20 25 30 31 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -6.2 -2.2 0.0 6.7 9.5 14.9 16.6 15.1 12.9 10.0 4.9 -1.8 6.7 MINIMUN AIR TEMPERATURE (C) -11.5 -6.4 -4.7 1.0 4.0 9.0 11.2 9.3 8.0 2.5 -0.5 -5.3 1.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 27 22 16 1 1 0 0 0 0 0 5 19 91 DAYS WITH FREEZING MIN.<= 0 30 26 27 12 6 0 0 0 0 7 15 28 151 TEMPERATURE RECORDS LOWEST(C) -22.5 -18.4 -16.0 -4.6 -8.5 5.8 6.0 4.0 2.2 -2.6 -9.0 -18.0 -22.5 DAY 27 29 1 5 5 9 11 12 10 30 9 29 MAXIMUM AIR TEMPERATURE (C) -0.7 3.2 6.0 13.7 15.4 21.1 22.3 21.3 19.5 19.0 12.0 3.3 13.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 2 1 0 0 0 0 3 DAYS WITH MAXIMUM TEMP. <= 0 17 9 6 0 0 0 0 0 0 0 0 8 40 TEMPERATURE RECORDS HIGHEST(C) 4.8 12.0 16.6 24.3 27.8 26.4 31.4 34.8 26.8 25.6 20.0 12.0 34.8 DAY 1 19 29 12 29 10 16 24 13 24 6 15 DIF. BETWEEN (MAX.-MIN.) (C) 10.8 9.6 10.7 12.7 11.4 12.1 11.1 12.0 11.5 16.5 12.5 8.6 11.6 MEAN DAILY TEMP. (MDT) (C) -6.1 -1.6 0.7 7.4 9.7 15.1 16.7 15.3 13.7 10.8 5.8 -1.0 7.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.1 0.0 0.0 0.0 0.0 1.1 HEATING DEG. DAYS(BASE 18 0C) 746.6 567.5 537.5 319.0 258.4 92.0 47.9 89.8 127.8 224.1 366.6 588.6 3965.8 DEWPOINT (MEAN C) -9.7 -6.7 -3.3 2.0 5.5 10.7 11.7 10.2 9.8 4.9 -0.7 -4.8 2.5 MIXING RATIO (G/KG) 2.26 2.82 3.65 5.26 6.84 9.54 10.24 9.22 9.04 6.47 4.40 3.27 6.08 VAPOUR PRESSURE (HPA) 3.13 3.88 5.04 7.24 9.40 13.01 13.96 12.65 12.40 8.91 6.10 4.53 8.35 SATURATION DEF. (HPA) 1.06 1.62 1.59 3.36 3.56 4.71 5.67 5.34 3.16 4.54 3.20 1.20 3.25 RELATIVE HUMIDITY (MEAN %) 78 74 82 78 79 79 75 75 85 75 72 82 78 RELATIVE HUMIDITY (MAX. %) 90 90 96 97 97 97 92 93 98 97 93 93 94 RELATIVE HUMIDITY (MIN. %) 62 58 59 54 57 57 58 55 62 49 49 66 57 RELATIVE HUMIDITY (MEAN% 03UTC) 82 84 92 91 93 94 87 90 96 94 87 88 90 RELATIVE HUMIDITY (MEAN% 09UTC) 73 66 68 63 62 60 61 58 63 53 57 72 63 RELATIVE HUMIDITY (MEAN% 15UTC) 76 68 74 72 74 74 70 71 86 72 64 80 73 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 14.2 22.3 25.4 91.3 43.9 72.8 9.6 20.4 10.8 5.3 54.2 35.4 405.6 DAYS WITH PRECIPITATION >=10 0 1 1 4 1 1 0 1 0 0 2 2 13 DAYS WITH PRECIPITATION >= 5 1 2 2 4 3 7 1 1 1 0 3 3 28 DAYS WITH PRECIPITATION >= 1 4 3 5 14 5 12 2 4 3 2 5 5 64 DAYS WITH PRECIPITATION 8 10 9 16 15 14 4 4 5 4 7 7 103 GREATEST DAILY PRECIPITATION 5.0 10.8 11.6 28.0 25.0 25.0 8.0 13.0 6.4 4.2 22.0 12.2 28.0 DAY 16 24 24 18 4 7 9 28 27 7 8 17 DAY WITH THUNDER STORM 0 0 0 0 1 11 1 1 0 0 0 0 14 DAYS WITH SNOW OR SLEET 8 8 10 6 4 0 0 0 0 1 3 7 47 DAYS WITH DUST 0 1 0 2 0 0 0 0 0 1 0 0 4 WIND DIRECTION (PREVAILING) 180 180 90 90 90 90 90 90 90 90 225 90 90 PREVAILING WIND SPEED(KNOTS) 16.5 18.5 11.5 10.5 12.9 8.5 11.1 11.2 10.9 12.3 19.6 12.9 11.2 PREVAILING WIND PERCENT 22.2 37.9 17.7 24.6 24.6 21.3 38.7 41.5 45.0 20.6 17.9 12.1 22.9 CALMS PERCENT OF WIND 54.0 38.4 56.9 51.3 56.9 67.1 53.6 51.6 51.3 66.9 51.3 57.3 54.8 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 188 174 132 141 116 87 77 83 90 108 192 160 133 VECTOR WIND MAGNITUDE(KNOTS) 4.3 7.5 1.9 1.9 2.6 1.6 4.8 4.7 4.8 2.0 4.2 2.6 2.6 WIND STEADINESES (MEAN %) 72.9 76.5 44.2 31.7 45.6 55.2 96.0 92.2 90.6 47.6 53.8 47.3 46.4 WIND SPEED (MEAN KNOTS) 5.9 9.8 4.3 6.0 5.7 2.9 5.0 5.1 5.3 4.2 7.8 5.5 5.6 FASTEST WIND DIRECTION 220 180 210 210 240 210 70 90 90 230 210 180 230 FASTEST WIND SPEED (KNOTS) 49 54 25 49 39 29 35 29 33 64 58 39 64 DAY 19 6 30 12 9 2 10 27 27 26 23 15 DAYS WITH SKY CLEAR (0-2)/8 18 11 10 4 10 12 16 19 12 17 14 11 154 DAYS WITH P.CLOUDY (3-6)/8 8 8 14 15 6 14 9 6 14 8 13 11 126 DAYS WITH CLOUDY (7-8)/8 5 10 7 11 15 4 6 6 4 6 3 9 86 DAYS WITH VISIBILITY =< 2 KM 8 9 7 18 8 10 3 9 15 15 8 10 120 DURATION OF SUNSHINE HOURS 144.4 128.4 157.8 142.4 133.4 182.4 259.7 266.5 220.8 201.0 166.8 126.7 2130.3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 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 864.5 861.1 865.1 864.7 864.9 861.8 863.1 866.2 866.9 867.0 868.2 867.1 865.0 MAX. QFE PRESSURE IN HPA 874.6 870.8 874.6 870.9 873.0 867.8 870.2 872.0 873.0 876.0 878.4 875.4 878.4 DAY-HOUR 5- 6 15- 9 12- 6 30-18 2- 9 12- 3 7- 6 30- 6 29- 6 29- 6 3- 6 2-15 MIN. QFE PRESSURE IN HPA 850.5 853.8 853.0 857.5 855.0 856.8 857.2 859.0 859.5 860.0 856.0 860.4 850.5 DAY-HOUR 30-12 21- 0 30-15 12-21 9- 0 17-15 9-15 24-12 25- 9 10-15 24-21 14- 0 MEAN QNH PRESSURE IN HPA 1014.5 1010.7 1015.2 1014.7 1014.9 1011.5 1012.9 1016.4 1017.3 1017.4 1018.7 1017.5 1015.1 MAX. QNH PRESSURE IN HPA 1026.0 1021.7 1026.0 1021.8 1024.2 1018.3 1021.0 1023.1 1024.2 1027.6 1030.3 1026.9 1030.3 DAY-HOUR 5- 6 15- 9 12- 6 30-18 2- 9 12- 3 7- 6 30- 6 29- 6 29- 6 3- 6 2-15 MIN. QNH PRESSURE IN HPA 998.6 1002.3 1001.4 1006.6 1003.7 1005.8 1006.2 1008.3 1008.8 1009.4 1004.8 1009.9 998.6 DAY-HOUR 30-12 21- 0 30-15 12-21 9- 0 17-15 9-15 24-12 25- 9 10-15 24-21 14- 0 MEAN QFF PRESSURE IN HPA 1022.0 1015.5 1018.9 1014.2 1012.9 1006.0 1006.4 1010.9 1013.0 1015.0 1019.5 1022.3 1014.7 MAX. QFF PRESSURE IN HPA 1038.8 1028.9 1032.8 1025.7 1028.9 1015.0 1016.7 1019.2 1024.2 1028.2 1032.1 1032.6 1038.8 DAY-HOUR 27- 6 29-18 12- 6 30-18 2- 6 7-18 12- 6 31- 6 29- 6 30- 6 17- 6 28-15 MIN. QFF PRESSURE IN HPA 1004.2 1004.3 998.8 999.0 997.9 998.5 999.0 998.4 1001.5 1002.7 1002.3 1009.0 997.9 DAY-HOUR 30-15 7-21 30-15 12-21 9- 0 17-12 9-12 24-12 25- 9 10-18 22-12 14- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 864.2 861.0 864.9 864.3 864.6 861.8 863.0 865.8 866.9 867.0 868.1 867.0 864.9 MAX. QFE PRESSURE IN HPA 874.0 870.2 873.0 869.0 871.5 866.2 868.6 871.0 872.2 874.5 877.2 872.8 877.2 DAY 5 16 12 8 2 12 7 31 29 30 4 3 MIN. QFE PRESSURE IN HPA 852.0 853.8 854.0 858.5 855.0 858.0 859.5 861.0 861.3 861.0 857.0 860.4 852.0 DAY 31 21 31 1 9 18 10 1 25 9 25 14 MEAN QNH PRESSURE IN HPA 1014.2 1010.5 1015.0 1014.3 1014.6 1011.5 1012.9 1016.0 1017.2 1017.3 1018.6 1017.3 1015.0 MAX. QNH PRESSURE IN HPA 1025.3 1021.0 1024.2 1019.6 1022.5 1016.5 1019.2 1021.9 1023.3 1025.9 1029.0 1024.0 1029.0 DAY 5 16 12 8 2 12 7 31 29 30 4 3 MIN. QNH PRESSURE IN HPA 1000.3 1002.3 1002.6 1007.7 1003.7 1007.1 1008.8 1010.5 1010.9 1010.5 1006.0 1009.9 1000.3 DAY 31 21 31 1 9 18 10 1 25 9 25 14 MEAN QFF PRESSURE IN HPA 1021.2 1014.9 1018.4 1013.6 1012.7 1006.2 1006.3 1010.5 1012.7 1014.5 1018.8 1021.7 1014.3 MAX. QFF PRESSURE IN HPA 1035.4 1027.7 1031.2 1021.5 1026.8 1014.3 1015.2 1017.7 1023.3 1024.9 1030.2 1029.1 1035.4 DAY 5 16 12 19 2 7 12 12 29 30 17 29 MIN. QFF PRESSURE IN HPA 1004.8 1004.8 1001.3 1001.4 997.9 999.2 1000.6 1003.1 1005.9 1005.3 1003.9 1009.0 997.9 DAY 1 21 31 13 9 18 10 25 25 11 22 14 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 864.1 861.0 865.1 864.7 865.1 862.1 863.7 866.4 867.3 867.2 868.2 866.8 865.1 MAX. QFE PRESSURE IN HPA 873.9 869.0 873.5 869.1 872.0 867.8 869.0 871.2 872.4 874.4 877.0 873.0 877.0 DAY 5 16 12 8 2 12 6 31 29 30 3 2 MIN. QFE PRESSURE IN HPA 853.0 854.1 855.0 859.5 856.0 857.0 859.4 861.0 860.7 861.8 857.0 860.4 853.0 DAY 1 21 31 1 9 17 10 1 25 9 25 14 MEAN QNH PRESSURE IN HPA 1014.1 1010.5 1015.2 1014.8 1015.2 1011.8 1013.6 1016.6 1017.7 1017.5 1018.7 1017.2 1015.2 MAX. QNH PRESSURE IN HPA 1025.2 1019.6 1024.8 1019.8 1023.1 1018.3 1019.6 1022.2 1023.5 1025.8 1028.8 1024.2 1028.8 DAY 5 16 12 8 2 12 6 31 29 30 3 2 MIN. QNH PRESSURE IN HPA 1001.4 1002.7 1003.7 1008.8 1004.8 1006.0 1008.7 1010.5 1010.2 1011.4 1006.0 1009.9 1001.4 DAY 1 21 31 1 9 17 10 1 25 9 25 14 MEAN QFF PRESSURE IN HPA 1022.0 1015.9 1019.6 1014.7 1013.9 1006.9 1007.7 1012.1 1014.5 1016.6 1020.2 1022.5 1015.5 MAX. QFF PRESSURE IN HPA 1036.9 1027.4 1032.3 1021.9 1028.0 1013.1 1016.2 1018.9 1023.8 1028.1 1031.3 1030.0 1036.9 DAY 5 16 12 19 2 13 12 12 29 30 17 29 MIN. QFF PRESSURE IN HPA 1005.8 1005.6 1001.4 1004.7 999.9 1000.0 1001.2 1004.6 1007.3 1008.6 1005.6 1009.1 999.9 DAY 1 21 30 13 9 18 10 1 25 10 25 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 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 865.2 861.9 866.2 865.5 865.5 862.2 864.0 867.2 867.9 868.1 869.0 867.9 865.9 MAX. QFE PRESSURE IN HPA 874.6 870.0 874.6 869.4 872.8 867.0 870.2 872.0 873.0 876.0 878.4 874.3 878.4 DAY 5 15 12 8 2 12 7 30 29 29 3 2 MIN. QFE PRESSURE IN HPA 853.0 855.9 856.2 861.0 856.8 857.0 860.0 861.8 860.0 862.6 859.2 863.0 853.0 DAY 30 5 30 22 9 17 10 1 25 9 25 14 MEAN QNH PRESSURE IN HPA 1015.3 1011.5 1016.4 1015.7 1015.7 1012.0 1014.0 1017.6 1018.4 1018.6 1019.7 1018.3 1016.1 MAX. QNH PRESSURE IN HPA 1026.0 1020.8 1026.0 1020.1 1024.0 1017.4 1021.0 1023.1 1024.2 1027.6 1030.3 1025.7 1030.3 DAY 5 15 12 8 2 12 7 30 29 29 3 2 MIN. QNH PRESSURE IN HPA 1001.4 1004.7 1005.1 1010.5 1005.8 1006.0 1009.4 1011.4 1009.4 1012.4 1008.5 1012.8 1001.4 DAY 30 5 30 22 9 17 10 1 25 9 25 14 MEAN QFF PRESSURE IN HPA 1023.6 1016.6 1020.5 1015.4 1013.6 1006.3 1007.5 1012.0 1014.3 1016.7 1020.8 1023.5 1015.9 MAX. QFF PRESSURE IN HPA 1038.8 1027.1 1032.8 1023.0 1028.9 1013.6 1016.7 1019.2 1024.2 1028.2 1032.1 1031.5 1038.8 DAY 27 29 12 19 2 7 12 31 29 30 17 29 MIN. QFF PRESSURE IN HPA 1007.7 1006.6 1001.9 1005.6 1000.7 998.8 1002.1 1004.7 1003.0 1005.7 1005.1 1012.2 998.8 DAY 30 7 30 22 9 17 23 24 25 26 22 15 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 864.9 861.4 865.7 864.9 865.1 861.7 863.2 866.3 866.9 866.9 868.1 867.3 865.2 MAX. QFE PRESSURE IN HPA 873.9 870.8 874.0 869.5 873.0 866.0 869.5 871.6 873.0 875.0 877.8 874.2 877.8 DAY 4 15 12 19 2 12 7 30 29 29 3 2 MIN. QFE PRESSURE IN HPA 852.0 855.2 855.0 859.2 856.3 857.2 859.3 860.3 859.5 861.0 858.4 862.2 852.0 DAY 30 7 30 22 9 17 9 24 25 26 22 13 MEAN QNH PRESSURE IN HPA 1015.0 1011.0 1015.8 1015.0 1015.2 1011.3 1013.1 1016.6 1017.3 1017.2 1018.6 1017.7 1015.3 MAX. QNH PRESSURE IN HPA 1025.2 1021.7 1025.3 1020.2 1024.2 1016.2 1020.2 1022.6 1024.2 1026.5 1029.7 1025.6 1029.7 DAY 4 15 12 19 2 12 7 30 29 29 3 2 MIN. QNH PRESSURE IN HPA 1000.3 1003.9 1003.7 1008.5 1005.2 1006.2 1008.6 1009.7 1008.8 1010.5 1007.6 1011.9 1000.3 DAY 30 7 30 22 9 17 9 24 25 26 22 13 MEAN QFF PRESSURE IN HPA 1022.1 1015.3 1019.2 1014.0 1012.7 1005.4 1006.2 1010.5 1012.2 1013.8 1019.0 1022.1 1014.4 MAX. QFF PRESSURE IN HPA 1037.0 1027.2 1031.1 1023.1 1028.3 1013.0 1016.6 1018.1 1023.7 1025.0 1029.9 1030.7 1037.0 DAY 27 29 12 30 2 7 12 30 29 15 3 2 MIN. QFF PRESSURE IN HPA 1006.3 1005.1 1000.0 1003.6 1000.0 998.6 1000.2 999.7 1001.5 1002.7 1003.3 1010.5 998.6 DAY 30 7 30 22 9 17 23 24 25 26 22 14 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 864.0 860.3 864.5 864.0 864.4 861.0 862.2 865.4 866.0 865.9 867.2 866.6 864.3 MAX. QFE PRESSURE IN HPA 873.0 870.0 872.2 869.5 872.5 865.2 868.8 870.4 872.0 873.7 876.8 875.0 876.8 DAY 9 15 12 30 2 12 7 30 29 29 3 2 MIN. QFE PRESSURE IN HPA 850.5 854.8 853.5 858.0 855.5 857.0 857.5 859.0 859.5 860.3 857.2 861.5 850.5 DAY 30 24 30 22 9 17 9 24 25 10 22 13 MEAN QNH PRESSURE IN HPA 1013.9 1009.8 1014.5 1013.9 1014.4 1010.5 1011.9 1015.6 1016.3 1016.1 1017.6 1016.9 1014.3 MAX. QNH PRESSURE IN HPA 1024.2 1020.8 1023.3 1020.2 1023.6 1015.3 1019.4 1021.2 1023.1 1025.0 1028.5 1026.5 1028.5 DAY 9 15 12 30 2 12 7 30 29 29 3 2 MIN. QNH PRESSURE IN HPA 998.6 1003.5 1002.0 1007.1 1004.3 1006.0 1006.6 1008.3 1008.8 1009.7 1006.2 1011.1 998.6 DAY 30 24 30 22 9 17 9 24 25 10 22 13 MEAN QFF PRESSURE IN HPA 1020.8 1014.1 1017.8 1013.3 1012.1 1005.0 1005.1 1009.9 1011.7 1012.9 1017.8 1021.2 1013.5 MAX. QFF PRESSURE IN HPA 1034.8 1025.8 1029.5 1023.8 1027.7 1012.4 1015.0 1017.1 1022.5 1023.8 1029.2 1032.2 1034.8 DAY 27 15 3 30 2 6 12 30 28 15 3 2 MIN. QFF PRESSURE IN HPA 1004.9 1005.1 999.1 1002.5 998.3 998.5 999.0 998.4 1001.5 1003.2 1002.3 1010.0 998.3 DAY 30 20 30 22 9 17 9 24 25 24 22 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 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 864.4 860.7 864.5 864.1 864.4 861.3 862.1 865.3 866.2 866.5 867.9 867.0 864.5 MAX. QFE PRESSURE IN HPA 874.1 870.2 872.2 870.0 872.2 866.0 868.0 870.5 872.4 874.1 877.0 875.4 877.0 DAY 4 15 12 30 2 12 7 30 29 29 3 2 MIN. QFE PRESSURE IN HPA 851.3 855.0 853.0 858.8 856.4 856.8 857.2 859.0 860.5 860.0 857.2 861.5 851.3 DAY 30 7 30 12 9 17 9 24 25 10 22 13 MEAN QNH PRESSURE IN HPA 1014.4 1010.2 1014.5 1014.1 1014.4 1010.8 1011.8 1015.4 1016.4 1016.8 1018.4 1017.4 1014.6 MAX. QNH PRESSURE IN HPA 1025.5 1021.0 1023.3 1020.8 1023.3 1016.2 1018.5 1021.4 1023.5 1025.5 1028.8 1026.9 1028.8 DAY 4 15 12 30 2 12 7 30 29 29 3 2 MIN. QNH PRESSURE IN HPA 999.5 1003.7 1001.4 1008.0 1005.3 1005.8 1006.2 1008.3 1010.0 1009.4 1006.2 1011.1 999.5 DAY 30 7 30 12 9 17 9 24 25 10 22 13 MEAN QFF PRESSURE IN HPA 1022.2 1015.7 1018.6 1014.0 1012.7 1005.8 1005.8 1010.7 1013.1 1015.6 1019.9 1022.7 1014.7 MAX. QFF PRESSURE IN HPA 1036.1 1027.0 1029.9 1024.8 1027.7 1014.0 1015.3 1018.2 1023.5 1026.2 1030.2 1032.6 1036.1 DAY 4 29 12 30 2 6 12 30 29 31 3 28 MIN. QFF PRESSURE IN HPA 1004.2 1004.9 998.8 1004.4 1000.5 998.7 999.3 999.9 1004.7 1004.0 1003.0 1011.3 998.7 DAY 30 23 30 12 9 17 9 24 25 10 22 13 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 864.6 861.4 865.1 865.1 865.1 862.3 863.1 866.5 867.1 867.3 868.5 867.3 865.3 MAX. QFE PRESSURE IN HPA 874.1 870.8 873.2 870.9 872.8 867.0 868.0 872.0 872.6 874.9 878.0 875.0 878.0 DAY 4 15 11 30 2 12 7 30 28 29 3 2 MIN. QFE PRESSURE IN HPA 851.3 855.0 855.0 859.0 856.5 858.0 859.0 861.0 862.8 860.5 858.0 862.0 851.3 DAY 30 7 30 12 9 17 9 18 17 10 22 13 MEAN QNH PRESSURE IN HPA 1014.6 1011.0 1015.2 1015.2 1015.3 1012.0 1013.0 1016.8 1017.5 1017.7 1019.1 1017.7 1015.4 MAX. QNH PRESSURE IN HPA 1025.5 1021.7 1024.4 1021.8 1024.0 1017.4 1018.5 1023.1 1023.7 1026.4 1029.9 1026.5 1029.9 DAY 4 15 11 30 2 12 7 30 28 29 3 2 MIN. QNH PRESSURE IN HPA 999.5 1003.7 1003.7 1008.3 1005.4 1007.1 1008.3 1010.5 1012.6 1010.0 1007.1 1011.7 999.5 DAY 30 7 30 12 9 17 9 18 17 10 22 13 MEAN QFF PRESSURE IN HPA 1022.9 1016.2 1019.1 1015.0 1013.0 1006.3 1006.5 1011.1 1013.3 1015.8 1020.3 1022.9 1015.2 MAX. QFF PRESSURE IN HPA 1037.2 1028.9 1031.5 1025.7 1028.5 1015.0 1016.0 1018.6 1024.2 1026.7 1030.8 1031.6 1037.2 DAY 26 29 11 30 2 7 12 30 28 29 3 28 MIN. QFF PRESSURE IN HPA 1005.1 1005.6 1001.5 1002.5 1000.5 999.4 1000.2 1002.7 1007.4 1002.7 1004.0 1011.8 999.4 DAY 30 7 29 12 9 17 23 24 13 10 22 13 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 864.6 861.4 865.1 865.0 864.9 862.3 863.3 866.5 867.1 867.3 868.4 867.1 865.2 MAX. QFE PRESSURE IN HPA 874.1 870.8 873.8 870.9 872.0 867.5 868.4 872.0 872.8 874.9 878.0 873.8 878.0 DAY 4 15 11 30 1 11 6 30 28 29 3 2 MIN. QFE PRESSURE IN HPA 851.8 854.0 854.2 857.5 856.7 857.7 859.4 861.5 862.3 860.5 856.0 860.5 851.8 DAY 30 7 30 12 9 27 9 18 24 10 24 13 MEAN QNH PRESSURE IN HPA 1014.6 1011.0 1015.2 1015.1 1015.0 1012.1 1013.2 1016.7 1017.5 1017.7 1018.9 1017.5 1015.4 MAX. QNH PRESSURE IN HPA 1025.5 1021.7 1025.1 1021.8 1023.1 1017.9 1019.0 1023.1 1024.0 1026.4 1029.9 1025.1 1029.9 DAY 4 15 11 30 1 11 6 30 28 29 3 2 MIN. QNH PRESSURE IN HPA 1000.1 1002.6 1002.8 1006.6 1005.6 1006.8 1008.7 1011.1 1012.0 1010.0 1004.8 1010.0 1000.1 DAY 30 7 30 12 9 27 9 18 24 10 24 13 MEAN QFF PRESSURE IN HPA 1021.8 1015.5 1018.4 1014.2 1012.4 1006.2 1006.4 1010.8 1012.5 1014.4 1019.5 1022.0 1014.5 MAX. QFF PRESSURE IN HPA 1035.3 1028.2 1032.2 1025.3 1027.2 1014.5 1016.4 1018.1 1024.1 1025.7 1029.7 1030.8 1035.3 DAY 26 15 11 30 1 6 11 30 28 29 3 28 MIN. QFF PRESSURE IN HPA 1004.5 1004.3 1001.1 999.0 1000.1 999.2 999.9 1002.3 1006.1 1002.9 1002.7 1009.3 999.0 DAY 30 7 30 12 8 27 23 24 24 10 22 13 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -6.6 -4.9 1.5 8.4 12.4 15.2 16.5 16.9 14.3 7.7 -1.9 -4.9 6.2 MINIMUN AIR TEMPERATURE (C) -12.1 -9.6 -3.8 1.8 5.8 8.6 10.2 10.0 7.7 1.7 -5.3 -11.2 0.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 29 25 16 2 0 0 0 0 0 0 17 31 120 DAYS WITH FREEZING MIN.<= 0 29 28 26 12 2 1 0 0 1 11 24 31 165 TEMPERATURE RECORDS LOWEST(C) -25.0 -21.0 -9.4 -8.4 -1.5 -0.2 5.5 4.0 0.0 -2.8 -24.2 -18.0 -25.0 DAY 20 6 13 23 10 23 23 25 25 12 30 20 MAXIMUM AIR TEMPERATURE (C) -1.1 0.4 7.6 15.6 19.7 22.3 22.5 23.9 22.8 16.0 2.6 1.7 12.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 3 1 2 7 0 0 0 13 DAYS WITH MAXIMUM TEMP. <= 0 22 13 3 0 0 0 0 0 0 0 13 11 62 TEMPERATURE RECORDS HIGHEST(C) 8.0 12.0 21.0 27.6 26.6 33.8 30.2 31.4 34.6 29.5 20.2 7.2 34.6 DAY 28 27 30 19 17 28 24 27 7 1 9 18 DIF. BETWEEN (MAX.-MIN.) (C) 11.0 10.0 11.4 13.8 13.9 13.7 12.3 13.9 15.1 14.3 7.9 12.9 12.5 MEAN DAILY TEMP. (MDT) (C) -6.6 -4.6 1.9 8.7 12.8 15.4 16.4 16.9 15.2 8.9 -1.4 -4.7 6.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.0 0.0 0.9 0.0 1.8 0.9 0.0 0.0 0.0 4.6 HEATING DEG. DAYS(BASE 18 0C) 762.9 632.7 499.0 282.9 162.5 88.5 56.3 51.0 96.8 283.4 580.6 704.7 4201.2 DEWPOINT (MEAN C) -9.4 -7.5 -3.4 1.3 6.5 10.2 12.4 11.9 9.3 3.8 -3.7 -6.9 2.0 MIXING RATIO (G/KG) 2.35 2.67 3.54 4.97 7.20 9.21 10.66 10.33 8.76 5.90 3.60 2.76 6.00 VAPOUR PRESSURE (HPA) 3.26 3.71 4.89 6.85 9.91 12.62 14.61 14.18 12.04 8.20 4.99 3.84 8.26 SATURATION DEF. (HPA) 0.88 0.83 2.55 5.29 5.38 5.69 4.93 5.86 5.46 3.03 0.95 0.68 3.46 RELATIVE HUMIDITY (MEAN %) 82 84 74 68 72 77 79 75 78 80 89 87 79 RELATIVE HUMIDITY (MAX. %) 93 94 92 88 94 96 97 95 97 98 97 95 95 RELATIVE HUMIDITY (MIN. %) 69 71 52 44 45 53 59 51 51 53 78 74 58 RELATIVE HUMIDITY (MEAN% 03UTC) 83 88 86 85 90 94 94 92 93 92 93 90 90 RELATIVE HUMIDITY (MEAN% 09UTC) 81 80 61 48 49 56 63 55 55 60 83 82 64 RELATIVE HUMIDITY (MEAN% 15UTC) 81 84 69 61 67 67 73 72 77 83 88 84 76 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 30.5 44.5 46.4 23.3 39.1 39.9 5.3 8.5 0.8 17.6 112.0 27.8 395.7 DAYS WITH PRECIPITATION >=10 0 1 2 0 1 1 0 0 0 0 5 0 10 DAYS WITH PRECIPITATION >= 5 2 3 4 1 2 3 0 1 0 2 11 2 31 DAYS WITH PRECIPITATION >= 1 11 7 10 8 9 7 2 2 0 4 12 6 78 DAYS WITH PRECIPITATION 15 11 16 11 14 10 2 5 6 9 17 9 125 GREATEST DAILY PRECIPITATION 6.0 21.0 13.0 9.0 12.0 18.0 3.3 5.2 0.4 8.0 16.0 9.6 21.0 DAY 14 15 3 26 3 1 11 7 22 28 24 8 DAY WITH THUNDER STORM 0 0 0 1 1 1 0 4 0 0 0 0 7 DAYS WITH SNOW OR SLEET 17 12 14 2 0 0 0 0 0 1 16 9 71 DAYS WITH DUST 0 0 0 1 0 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 90 90 225 225 45 45 45 45 90 45 90 225 90 PREVAILING WIND SPEED(KNOTS) 10.3 19.1 19.4 22.2 14.6 12.3 14.5 14.8 13.9 15.0 15.1 7.6 13.7 PREVAILING WIND PERCENT 12.1 14.7 14.1 15.8 12.5 19.2 30.2 23.8 23.8 19.4 30.8 6.9 16.1 CALMS PERCENT OF WIND 56.9 48.7 50.4 38.8 49.2 53.8 48.8 53.2 53.3 59.3 50.4 67.3 52.6 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 199 93 194 224 107 69 64 65 68 67 74 164 83 VECTOR WIND MAGNITUDE(KNOTS) 2.7 3.5 2.7 2.6 2.2 3.7 7.0 5.7 5.5 5.1 5.1 0.7 2.7 WIND STEADINESES (MEAN %) 39.7 46.1 38.6 26.0 31.4 68.5 95.9 90.5 85.9 86.4 76.1 24.1 40.9 WIND SPEED (MEAN KNOTS) 6.8 7.6 7.0 10.0 7.0 5.4 7.3 6.3 6.4 5.9 6.7 2.9 6.6 FASTEST WIND DIRECTION 210 80 220 240 210 210 60 70 70 60 70 180 240 FASTEST WIND SPEED (KNOTS) 51 35 49 58 35 29 29 29 35 35 35 39 58 DAY 28 12 8 11 26 7 1 8 21 24 10 13 DAYS WITH SKY CLEAR (0-2)/8 13 10 15 4 12 17 16 19 16 14 2 12 150 DAYS WITH P.CLOUDY (3-6)/8 7 8 7 16 8 7 11 10 7 7 10 12 110 DAYS WITH CLOUDY (7-8)/8 11 10 9 10 11 6 4 2 7 10 18 7 105 DAYS WITH VISIBILITY =< 2 KM 18 13 8 11 11 12 10 6 15 10 21 15 150 DURATION OF SUNSHINE HOURS 114.6 129.6 185.4 153.1 230.9 269.8 248.4 276.1 207.6 183.7 62.6 ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 868.3 867.4 865.7 864.9 866.0 865.4 867.3 868.8 867.9 872.8 869.4 869.4 867.8 MAX. QFE PRESSURE IN HPA 880.0 877.5 875.4 873.0 874.0 877.0 874.0 874.2 875.5 879.6 878.3 876.0 880.0 DAY-HOUR 6- 6 9- 6 31- 6 1- 0 8-18 22- 3 27- 6 24- 6 21-21 19-21 21- 6 20- 6 MIN. QFE PRESSURE IN HPA 853.0 857.0 854.2 857.2 859.8 859.0 860.0 861.4 860.0 862.0 856.0 860.8 853.0 DAY-HOUR 8- 6 21- 3 5-18 8-12 6-12 16-15 24-12 12-12 3-12 28-12 10-12 5- 3 MEAN QNH PRESSURE IN HPA 1018.8 1017.8 1015.9 1015.0 1016.2 1015.5 1017.7 1019.4 1018.4 1023.9 1020.1 1020.1 1018.2 MAX. QNH PRESSURE IN HPA 1032.2 1029.3 1026.9 1024.2 1025.3 1028.8 1025.3 1025.6 1027.0 1031.7 1030.2 1027.6 1032.2 DAY-HOUR 6- 6 9- 6 31- 6 1- 0 8-18 22- 3 27- 6 24- 6 21-21 19-21 21- 6 20- 6 MIN. QNH PRESSURE IN HPA 1001.4 1006.0 1002.8 1006.2 1009.2 1008.3 1009.4 1011.0 1009.4 1011.7 1004.8 1010.3 1001.4 DAY-HOUR 8- 6 21- 3 5-18 8-12 6-12 16-15 24-12 12-12 3-12 28-12 10-12 5- 3 MEAN QFF PRESSURE IN HPA 1026.8 1024.7 1018.7 1013.6 1012.4 1010.1 1011.4 1013.0 1013.5 1023.0 1025.0 1027.0 1018.3 MAX. QFF PRESSURE IN HPA 1041.3 1037.1 1031.4 1026.6 1026.6 1028.0 1019.9 1021.0 1026.2 1030.9 1045.5 1040.4 1045.5 DAY-HOUR 19-18 16- 6 23- 6 23- 3 9- 3 22- 3 27- 6 24- 3 22-18 20- 6 30- 6 20- 6 MIN. QFF PRESSURE IN HPA 1004.5 1010.3 1002.8 1000.5 1003.5 1000.6 1001.4 1002.2 1000.7 1006.0 1002.1 1017.8 1000.5 DAY-HOUR 8- 9 21- 3 8- 9 19-12 17-12 16-15 24-12 12-12 3-12 1-12 10- 9 28-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 868.1 867.2 865.6 865.0 865.7 865.2 867.1 868.8 868.3 872.7 869.1 869.3 867.7 MAX. QFE PRESSURE IN HPA 878.0 875.2 874.1 873.0 873.0 875.0 873.0 872.0 874.5 879.2 878.0 874.5 879.2 DAY 6 10 31 1 9 22 27 24 22 20 21 20 MIN. QFE PRESSURE IN HPA 855.0 857.5 855.0 859.8 861.0 860.0 862.0 863.0 862.9 864.0 858.0 861.0 855.0 DAY 9 21 6 22 3 4 1 12 29 28 11 5 MEAN QNH PRESSURE IN HPA 1018.6 1017.6 1015.7 1015.1 1015.9 1015.3 1017.5 1019.4 1018.8 1023.8 1019.8 1020.0 1018.1 MAX. QNH PRESSURE IN HPA 1029.9 1026.7 1025.5 1024.2 1024.2 1026.5 1024.2 1023.1 1025.9 1031.3 1029.9 1025.9 1031.3 DAY 6 10 31 1 9 22 27 24 22 20 21 20 MIN. QNH PRESSURE IN HPA 1003.7 1006.6 1003.7 1009.2 1010.5 1009.4 1011.7 1012.8 1012.7 1014.0 1007.1 1010.5 1003.7 DAY 9 21 6 22 3 4 1 12 29 28 11 5 MEAN QFF PRESSURE IN HPA 1026.2 1024.0 1018.4 1013.6 1012.1 1009.9 1011.3 1012.9 1013.5 1022.2 1024.2 1026.5 1017.9 MAX. QFF PRESSURE IN HPA 1038.8 1034.6 1029.0 1023.2 1026.0 1024.9 1017.9 1019.0 1024.6 1028.3 1039.2 1034.2 1039.2 DAY 6 16 23 1 9 22 27 25 22 6 30 20 MIN. QFF PRESSURE IN HPA 1007.6 1010.3 1004.3 1002.3 1005.7 1002.1 1003.6 1005.1 1004.9 1008.1 1004.3 1018.5 1002.1 DAY 9 21 6 20 13 17 25 12 14 1 10 5 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 868.0 867.2 865.7 865.1 866.3 866.2 867.9 869.3 868.3 872.9 869.3 869.2 867.9 MAX. QFE PRESSURE IN HPA 879.0 875.2 875.0 873.0 873.0 877.0 873.4 873.0 875.0 879.0 878.0 874.6 879.0 DAY 6 9 31 1 9 22 27 24 22 20 21 20 MIN. QFE PRESSURE IN HPA 854.0 857.0 855.5 859.5 861.0 861.0 862.8 863.8 863.0 863.5 857.2 860.8 854.0 DAY 8 21 6 8 6 3 1 12 13 28 10 5 MEAN QNH PRESSURE IN HPA 1018.5 1017.6 1015.9 1015.2 1016.5 1016.5 1018.4 1020.0 1018.9 1024.0 1020.0 1019.8 1018.4 MAX. QNH PRESSURE IN HPA 1031.0 1026.7 1026.5 1024.2 1024.2 1028.8 1024.7 1024.2 1026.5 1031.0 1029.9 1026.0 1031.0 DAY 6 9 31 1 9 22 27 24 22 20 21 20 MIN. QNH PRESSURE IN HPA 1002.6 1006.0 1004.3 1008.8 1010.5 1010.5 1012.6 1013.7 1012.8 1013.4 1006.2 1010.3 1002.6 DAY 8 21 6 8 6 3 1 12 13 28 10 5 MEAN QFF PRESSURE IN HPA 1026.8 1024.9 1019.6 1014.7 1013.6 1011.5 1012.7 1014.7 1015.3 1024.2 1025.3 1027.4 1019.2 MAX. QFF PRESSURE IN HPA 1040.4 1036.6 1030.5 1026.6 1026.6 1028.0 1019.3 1021.0 1025.9 1030.2 1043.5 1036.5 1043.5 DAY 6 16 23 23 9 22 27 24 22 18 30 20 MIN. QFF PRESSURE IN HPA 1009.4 1010.3 1005.7 1003.4 1007.0 1005.1 1006.9 1007.2 1008.3 1010.1 1003.3 1021.0 1003.3 DAY 9 21 6 20 13 28 1 12 13 1 10 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 869.1 868.3 866.7 865.6 866.7 866.3 868.3 869.9 868.9 873.9 870.3 870.0 868.7 MAX. QFE PRESSURE IN HPA 880.0 877.5 875.4 873.0 873.4 877.0 874.0 874.2 875.5 879.6 878.3 876.0 880.0 DAY 6 9 31 1 9 22 27 24 22 20 21 20 MIN. QFE PRESSURE IN HPA 853.0 859.7 857.0 858.8 861.2 860.8 863.0 864.0 863.0 864.0 857.9 861.6 853.0 DAY 8 21 19 8 6 3 24 12 3 28 10 5 MEAN QNH PRESSURE IN HPA 1019.7 1018.8 1017.1 1015.8 1017.1 1016.5 1018.9 1020.7 1019.5 1025.2 1021.1 1020.7 1019.3 MAX. QNH PRESSURE IN HPA 1032.2 1029.3 1026.9 1024.2 1024.7 1028.8 1025.3 1025.6 1027.0 1031.7 1030.2 1027.6 1032.2 DAY 6 9 31 1 9 22 27 24 22 20 21 20 MIN. QNH PRESSURE IN HPA 1001.4 1009.1 1006.0 1008.0 1010.8 1010.3 1012.8 1014.0 1012.8 1014.0 1007.0 1011.2 1001.4 DAY 8 21 19 8 6 3 24 12 3 28 10 5 MEAN QFF PRESSURE IN HPA 1028.3 1026.1 1020.1 1014.3 1013.1 1011.0 1012.4 1014.1 1014.8 1024.4 1026.4 1028.5 1019.5 MAX. QFF PRESSURE IN HPA 1041.1 1037.1 1031.4 1025.4 1025.5 1025.2 1019.9 1020.3 1026.1 1030.9 1045.5 1040.4 1045.5 DAY 6 16 23 23 9 22 27 24 22 20 30 20 MIN. QFF PRESSURE IN HPA 1005.9 1011.5 1005.8 1002.8 1006.1 1002.4 1004.5 1005.7 1006.0 1008.2 1003.3 1020.3 1002.4 DAY 8 21 8 19 17 28 24 12 3 1 10 5 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 868.6 867.9 866.1 864.8 865.9 865.6 867.5 868.9 867.9 872.9 869.5 869.4 867.9 MAX. QFE PRESSURE IN HPA 879.0 877.5 874.0 871.0 873.1 876.0 873.8 873.4 875.0 878.2 877.3 874.0 879.0 DAY 6 9 31 1 8 22 27 28 22 20 21 20 MIN. QFE PRESSURE IN HPA 853.8 859.9 855.2 858.4 860.5 860.5 861.0 862.6 861.0 863.1 856.5 862.0 853.8 DAY 8 21 8 8 6 16 24 12 3 28 10 5 MEAN QNH PRESSURE IN HPA 1019.2 1018.4 1016.3 1014.9 1016.2 1015.7 1018.0 1019.5 1018.4 1024.0 1020.3 1020.1 1018.4 MAX. QNH PRESSURE IN HPA 1031.0 1029.3 1025.3 1021.9 1024.3 1027.6 1025.1 1024.7 1026.5 1030.1 1029.1 1025.3 1031.0 DAY 6 9 31 1 8 22 27 28 22 20 21 20 MIN. QNH PRESSURE IN HPA 1002.3 1009.3 1003.9 1007.6 1010.0 1010.0 1010.5 1012.4 1010.5 1012.9 1005.4 1011.7 1002.3 DAY 8 21 8 8 6 16 24 12 3 28 10 5 MEAN QFF PRESSURE IN HPA 1026.7 1025.0 1018.6 1012.8 1011.8 1009.9 1011.3 1012.4 1012.5 1022.3 1024.7 1026.3 1017.9 MAX. QFF PRESSURE IN HPA 1041.0 1036.5 1031.1 1021.8 1023.9 1023.9 1018.5 1018.2 1025.2 1029.4 1041.5 1035.5 1041.5 DAY 19 9 16 23 8 22 27 24 22 7 30 20 MIN. QFF PRESSURE IN HPA 1004.5 1011.6 1002.8 1002.0 1003.7 1002.3 1001.6 1002.8 1001.5 1006.7 1002.1 1017.9 1001.5 DAY 8 21 8 19 17 16 24 12 3 1 10 28 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 867.8 866.8 864.9 863.9 865.3 864.8 866.5 867.8 866.7 871.8 868.9 868.8 867.0 MAX. QFE PRESSURE IN HPA 878.2 877.0 872.7 869.0 873.2 875.0 872.8 872.3 874.0 877.0 876.8 873.2 878.2 DAY 6 9 16 1 8 22 27 28 22 20 21 26 MIN. QFE PRESSURE IN HPA 853.8 859.5 855.0 857.2 859.8 859.4 860.0 861.4 860.0 862.0 856.0 864.0 853.8 DAY 8 21 3 8 6 16 24 12 3 28 10 4 MEAN QNH PRESSURE IN HPA 1018.2 1017.2 1015.0 1013.9 1015.5 1014.8 1016.8 1018.3 1017.0 1022.8 1019.5 1019.4 1017.4 MAX. QNH PRESSURE IN HPA 1030.1 1028.8 1023.9 1019.6 1024.4 1026.5 1024.0 1023.4 1025.3 1028.8 1028.5 1024.4 1030.1 DAY 6 9 16 1 8 22 27 28 22 20 21 26 MIN. QNH PRESSURE IN HPA 1002.3 1008.8 1003.7 1006.2 1009.2 1008.7 1009.4 1011.0 1009.4 1011.7 1004.8 1014.0 1002.3 DAY 8 21 3 8 6 16 24 12 3 28 10 4 MEAN QFF PRESSURE IN HPA 1025.8 1023.5 1017.3 1012.4 1011.6 1009.3 1010.3 1011.7 1011.6 1021.3 1024.1 1025.6 1017.0 MAX. QFF PRESSURE IN HPA 1039.0 1035.9 1030.6 1020.5 1025.1 1023.2 1017.3 1018.1 1024.3 1028.6 1038.3 1033.7 1039.0 DAY 6 9 16 24 8 22 27 24 22 6 30 6 MIN. QFF PRESSURE IN HPA 1005.1 1011.1 1004.2 1000.5 1003.5 1001.6 1001.4 1002.2 1000.7 1006.0 1002.2 1017.8 1000.5 DAY 8 21 8 19 17 16 24 12 3 1 10 28 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 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 868.1 867.0 865.0 864.2 865.4 864.6 866.3 867.8 867.0 872.1 869.2 869.3 867.2 MAX. QFE PRESSURE IN HPA 877.4 877.0 872.6 868.0 873.1 874.0 872.0 872.0 874.0 878.0 877.0 874.0 878.0 DAY 6 9 30 1 8 22 27 28 22 19 21 26 MIN. QFE PRESSURE IN HPA 854.2 860.0 855.7 857.2 861.0 859.0 860.0 861.6 860.0 863.5 857.4 864.0 854.2 DAY 8 20 8 20 17 16 24 12 3 28 10 4 MEAN QNH PRESSURE IN HPA 1018.7 1017.4 1015.1 1014.1 1015.5 1014.6 1016.6 1018.3 1017.3 1023.2 1019.9 1020.0 1017.6 MAX. QNH PRESSURE IN HPA 1029.2 1028.8 1023.7 1018.5 1024.3 1025.3 1023.1 1023.1 1025.3 1029.9 1028.8 1025.3 1029.9 DAY 6 9 30 1 8 22 27 28 22 19 21 26 MIN. QNH PRESSURE IN HPA 1002.8 1009.4 1004.5 1006.2 1010.5 1008.3 1009.4 1011.2 1009.4 1013.4 1006.4 1014.0 1002.8 DAY 8 20 8 20 17 16 24 12 3 28 10 4 MEAN QFF PRESSURE IN HPA 1027.0 1024.5 1018.5 1013.6 1012.5 1009.4 1010.7 1012.8 1013.5 1023.3 1025.3 1027.3 1018.2 MAX. QFF PRESSURE IN HPA 1040.4 1036.4 1030.2 1022.3 1024.9 1022.7 1017.1 1019.2 1025.1 1030.8 1039.9 1034.5 1040.4 DAY 19 9 16 24 8 22 27 24 22 19 30 20 MIN. QFF PRESSURE IN HPA 1007.3 1015.2 1006.0 1001.7 1004.1 1000.6 1002.3 1004.3 1002.1 1011.9 1006.6 1019.7 1000.6 DAY 8 21 8 19 17 16 24 12 3 1 10 28 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 868.5 867.5 866.0 865.3 866.3 865.3 867.3 868.9 868.3 873.0 869.6 869.9 868.0 MAX. QFE PRESSURE IN HPA 877.0 877.0 874.5 869.8 874.0 874.0 873.0 872.0 875.4 879.2 878.0 874.2 879.2 DAY 5 9 30 4 8 21 26 17 22 19 20 26 MIN. QFE PRESSURE IN HPA 855.0 858.5 854.2 859.5 862.0 860.0 861.5 863.0 862.5 866.0 858.2 863.8 854.2 DAY 8 20 5 11 12 3 24 11 13 26 10 4 MEAN QNH PRESSURE IN HPA 1019.1 1018.0 1016.2 1015.4 1016.6 1015.5 1017.7 1019.5 1018.8 1024.2 1020.3 1020.7 1018.5 MAX. QNH PRESSURE IN HPA 1028.8 1028.8 1025.9 1020.6 1025.3 1025.3 1024.2 1023.1 1026.9 1031.3 1029.9 1025.6 1031.3 DAY 5 9 30 4 8 21 26 17 22 19 20 26 MIN. QNH PRESSURE IN HPA 1003.7 1007.7 1002.8 1008.8 1011.7 1009.4 1011.1 1012.8 1012.2 1016.2 1007.4 1013.7 1002.8 DAY 8 20 5 11 12 3 24 11 13 26 10 4 MEAN QFF PRESSURE IN HPA 1027.6 1025.1 1019.1 1013.9 1012.6 1009.9 1011.3 1012.8 1014.1 1023.5 1025.7 1028.3 1018.7 MAX. QFF PRESSURE IN HPA 1041.3 1036.2 1029.8 1022.8 1026.0 1023.0 1018.6 1017.9 1026.2 1029.7 1040.2 1034.8 1041.3 DAY 19 9 16 23 8 21 27 23 22 20 29 20 MIN. QFF PRESSURE IN HPA 1007.5 1011.6 1004.4 1001.9 1003.9 1001.9 1001.5 1004.3 1005.4 1013.1 1006.2 1021.5 1001.5 DAY 8 20 5 19 17 27 24 12 13 1 9 28 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 868.3 867.4 866.0 865.3 866.1 865.5 867.6 869.0 868.4 873.2 869.4 869.7 868.0 MAX. QFE PRESSURE IN HPA 877.0 876.2 874.5 869.2 874.0 875.0 873.2 872.5 875.5 879.6 878.0 874.0 879.6 DAY 5 9 30 4 8 21 26 23 21 19 20 26 MIN. QFE PRESSURE IN HPA 855.0 858.0 854.8 860.3 862.0 860.0 862.1 863.2 862.9 865.5 858.5 862.0 854.8 DAY 8 20 5 8 12 3 24 11 28 27 10 4 MEAN QNH PRESSURE IN HPA 1018.8 1017.8 1016.2 1015.4 1016.4 1015.6 1018.0 1019.6 1018.9 1024.4 1020.1 1020.4 1018.5 MAX. QNH PRESSURE IN HPA 1028.8 1027.8 1025.9 1019.9 1025.3 1026.5 1024.4 1023.6 1027.0 1031.7 1029.9 1025.3 1031.7 DAY 5 9 30 4 8 21 26 23 21 19 20 26 MIN. QNH PRESSURE IN HPA 1003.7 1007.1 1003.5 1009.7 1011.7 1009.4 1011.8 1013.0 1012.7 1015.7 1007.7 1011.7 1003.5 DAY 8 20 5 8 12 3 24 11 28 27 10 4 MEAN QFF PRESSURE IN HPA 1026.4 1024.4 1018.4 1013.3 1012.0 1009.7 1011.4 1012.5 1013.2 1022.9 1024.7 1026.6 1018.0 MAX. QFF PRESSURE IN HPA 1038.8 1035.0 1029.4 1022.6 1026.1 1024.7 1018.3 1017.9 1025.0 1028.6 1038.1 1032.4 1038.8 DAY 19 9 15 23 8 21 27 23 21 20 29 20 MIN. QFF PRESSURE IN HPA 1006.9 1010.6 1002.9 1002.3 1004.9 1001.7 1002.3 1003.7 1003.8 1011.8 1004.7 1019.9 1001.7 DAY 8 20 5 19 17 16 24 12 13 1 9 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.9 -3.5 3.0 9.9 12.7 13.5 15.9 16.6 12.7 9.4 4.9 -2.9 7.5 MINIMUN AIR TEMPERATURE (C) -7.7 -7.3 -2.6 2.8 5.7 7.4 9.1 11.0 4.2 3.8 0.3 -7.7 1.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 25 24 8 1 0 0 0 0 0 1 2 20 81 DAYS WITH FREEZING MIN.<= 0 31 26 28 11 0 0 0 0 4 6 14 29 149 TEMPERATURE RECORDS LOWEST(C) -15.2 -19.0 -5.8 -5.0 0.4 0.6 3.0 7.0 -1.8 -4.6 -5.6 -23.0 -23.0 DAY 24 19 17 5 20 30 2 8 19 12 10 7 MAXIMUM AIR TEMPERATURE (C) 4.1 2.2 10.0 18.1 20.0 20.3 21.7 21.9 20.8 17.4 11.3 2.7 14.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 1 0 0 0 0 0 0 1 DAYS WITH MAXIMUM TEMP. <= 0 6 9 3 0 0 0 0 0 0 0 0 11 29 TEMPERATURE RECORDS HIGHEST(C) 10.0 11.4 21.0 28.6 26.0 31.0 25.5 26.6 26.6 25.0 21.0 11.0 31.0 DAY 30 27 29 21 22 2 20 15 27 14 3 2 DIF. BETWEEN (MAX.-MIN.) (C) 11.8 9.5 12.6 15.3 14.3 12.9 12.6 10.9 16.6 13.6 11.0 10.4 12.6 MEAN DAILY TEMP. (MDT) (C) -1.8 -2.6 3.7 10.5 12.8 13.8 15.4 16.5 12.5 10.6 5.8 -2.5 7.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.3 HEATING DEG. DAYS(BASE 18 0C) 615.1 575.5 442.5 227.8 160.7 133.7 79.1 49.2 164.7 230.7 366.7 635.1 3680.7 DEWPOINT (MEAN C) -4.9 -6.8 -1.9 4.0 7.2 8.8 10.4 13.4 8.0 5.4 0.7 -6.3 3.2 MIXING RATIO (G/KG) 3.20 2.79 3.91 6.06 7.57 8.40 9.35 11.39 7.99 6.61 4.73 2.95 6.24 VAPOUR PRESSURE (HPA) 4.43 3.86 5.40 8.34 10.41 11.54 12.82 15.59 11.07 9.19 6.55 4.11 8.61 SATURATION DEF. (HPA) 1.18 1.22 2.84 5.10 5.21 4.86 5.86 3.74 4.50 3.33 2.62 1.34 3.48 RELATIVE HUMIDITY (MEAN %) 81 80 76 72 74 76 72 83 76 80 78 79 77 RELATIVE HUMIDITY (MAX. %) 93 94 94 93 95 96 91 96 95 97 93 92 94 RELATIVE HUMIDITY (MIN. %) 66 65 53 44 50 55 54 64 51 54 57 61 56 RELATIVE HUMIDITY (MEAN% 03UTC) 88 87 92 88 91 90 87 93 89 94 87 85 89 RELATIVE HUMIDITY (MEAN% 09UTC) 80 75 61 49 55 63 58 69 52 57 62 72 63 RELATIVE HUMIDITY (MEAN% 15UTC) 75 73 65 67 68 69 66 84 79 81 76 77 73 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 12.7 15.1 28.6 25.1 49.5 9.6 1.6 0.4 2.5 18.4 150.8 11.3 325.6 DAYS WITH PRECIPITATION >=10 0 0 0 1 1 0 0 0 0 1 4 0 7 DAYS WITH PRECIPITATION >= 5 1 1 4 1 5 0 0 0 0 1 4 0 17 DAYS WITH PRECIPITATION >= 1 6 5 6 4 9 3 1 0 1 1 6 4 46 DAYS WITH PRECIPITATION 8 12 12 10 17 10 4 2 7 9 11 9 111 GREATEST DAILY PRECIPITATION 5.0 5.2 6.5 10.2 13.4 4.4 1.0 0.3 2.0 16.0 63.0 2.8 63.0 DAY 5 16 7 30 13 28 27 6 29 15 5 25 DAY WITH THUNDER STORM 0 0 0 1 9 2 0 0 0 1 0 0 13 DAYS WITH SNOW OR SLEET 6 10 11 1 0 0 0 0 0 0 4 9 41 DAYS WITH DUST 0 0 0 1 3 0 0 0 0 0 0 0 4 WIND DIRECTION (PREVAILING) 225 90 90 45 45 90 90 90 90 90 90 225 90 PREVAILING WIND SPEED(KNOTS) 9.6 12.6 11.4 13.5 12.2 15.4 16.0 16.1 14.4 13.0 12.1 15.2 14.3 PREVAILING WIND PERCENT 12.2 14.7 19.0 12.9 12.9 46.7 60.5 60.7 42.9 36.3 21.7 20.6 28.9 CALMS PERCENT OF WIND 63.0 50.0 47.6 45.8 51.2 37.5 31.0 29.6 48.3 48.0 35.4 45.2 44.4 NO. OF WIND OBSERVATION 246 224 248 240 248 240 248 247 240 248 240 248 2917 VECTOR WIND DIRECTION (MEAN) 200 93 100 121 89 85 82 82 84 95 178 183 97 VECTOR WIND MAGNITUDE(KNOTS) 2.0 1.5 2.2 1.8 1.0 7.9 10.2 10.5 6.6 4.2 3.7 2.5 3.8 WIND STEADINESES (MEAN %) 55.6 25.0 39.3 25.0 17.5 88.8 97.1 97.2 95.7 66.7 45.1 36.8 52.8 WIND SPEED (MEAN KNOTS) 3.6 6.0 5.6 7.2 5.7 8.9 10.5 10.8 6.9 6.3 8.2 6.8 7.2 FASTEST WIND DIRECTION 220 220 180 210 240 70 70 80 70 240 210 210 220 FASTEST WIND SPEED (KNOTS) 49 43 35 39 43 29 27 27 25 27 35 35 49 DAY 29 1 6 24 2 3 24 5 11 18 27 2 DAYS WITH SKY CLEAR (0-2)/8 16 8 8 8 12 15 24 21 20 11 12 12 167 DAYS WITH P.CLOUDY (3-6)/8 8 10 9 13 13 8 5 6 5 7 12 14 110 DAYS WITH CLOUDY (7-8)/8 7 10 14 9 6 7 2 4 5 13 6 5 88 DAYS WITH VISIBILITY =< 2 KM 8 15 13 13 9 11 2 4 7 18 9 8 117 DURATION OF SUNSHINE HOURS ****** ****** 164.3 196.0 252.1 231.3 295.4 285.1 236.7 177.7 163.3 140.1 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 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 866.2 865.2 865.2 866.2 866.6 866.5 866.5 867.6 874.2 874.4 868.7 870.3 868.1 MAX. QFE PRESSURE IN HPA 877.0 878.2 873.0 877.0 874.0 871.0 870.9 873.4 879.2 881.4 878.3 880.2 881.4 DAY-HOUR 9- 6 18- 9 1- 6 5- 6 18- 6 20-21 9-21 15- 6 23- 3 11- 6 2- 6 21-18 MIN. QFE PRESSURE IN HPA 854.2 850.5 852.5 855.2 857.0 858.2 860.2 861.0 868.4 865.0 859.0 855.0 850.5 DAY-HOUR 16- 9 1- 3 7- 9 30-15 1- 0 2-12 20-12 10-15 7-15 14-12 26-12 3-12 MEAN QNH PRESSURE IN HPA 1016.5 1015.3 1015.3 1016.4 1016.9 1016.8 1016.8 1018.1 1025.6 1025.8 1019.3 1021.1 1018.7 MAX. QNH PRESSURE IN HPA 1028.8 1030.1 1024.2 1028.8 1025.3 1021.9 1021.8 1024.7 1031.3 1033.8 1030.2 1032.4 1033.8 DAY-HOUR 9- 6 18- 9 1- 6 5- 6 18- 6 20-21 9-21 15- 6 23- 3 11- 6 2- 6 21-18 MIN. QNH PRESSURE IN HPA 1002.8 998.6 1000.9 1003.9 1006.0 1007.4 1009.6 1010.5 1019.0 1015.1 1008.3 1003.7 998.6 DAY-HOUR 16- 9 1- 3 7- 9 30-15 1- 0 2-12 20-12 10-15 7-15 14-12 26-12 3-12 MEAN QFF PRESSURE IN HPA 1021.5 1021.1 1017.1 1014.2 1012.9 1012.3 1010.9 1011.7 1021.7 1023.9 1020.0 1026.8 1017.9 MAX. QFF PRESSURE IN HPA 1038.6 1042.0 1030.1 1032.4 1023.6 1020.7 1018.4 1019.4 1030.5 1034.6 1032.8 1047.6 1047.6 DAY-HOUR 9- 6 19- 6 1- 6 5- 6 18- 3 27-18 2- 3 8- 3 23- 3 23- 6 6-18 7- 6 MIN. QFF PRESSURE IN HPA 1002.5 997.8 1000.1 1000.1 1002.0 998.4 1002.7 1003.3 1014.2 1010.0 1007.7 1006.2 997.8 DAY-HOUR 16-12 1- 3 7-12 30-15 1- 0 2-12 20-12 10-12 27-12 14-12 26-12 3-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 866.3 864.9 865.1 866.3 866.2 866.6 866.8 867.7 874.1 874.3 868.8 870.3 868.1 MAX. QFE PRESSURE IN HPA 876.0 876.5 872.6 875.0 872.5 870.3 870.1 872.0 878.0 880.5 876.4 879.0 880.5 DAY 9 18 1 5 18 21 10 15 23 24 2 22 MIN. QFE PRESSURE IN HPA 856.0 853.0 857.0 857.0 857.0 862.4 862.4 863.2 869.2 868.1 859.2 855.7 853.0 DAY 16 1 7 2 1 2 20 2 8 18 26 4 MEAN QNH PRESSURE IN HPA 1016.6 1015.0 1015.1 1016.6 1016.5 1016.9 1017.1 1018.1 1025.5 1025.7 1019.4 1021.1 1018.6 MAX. QNH PRESSURE IN HPA 1027.6 1028.2 1023.7 1026.5 1023.6 1021.1 1020.9 1023.1 1029.9 1032.7 1028.1 1031.0 1032.7 DAY 9 18 1 5 18 21 10 15 23 24 2 22 MIN. QNH PRESSURE IN HPA 1004.8 1001.4 1006.0 1006.0 1006.0 1012.1 1012.1 1013.0 1019.9 1018.6 1008.5 1004.5 1001.4 DAY 16 1 7 2 1 2 20 2 8 18 26 4 MEAN QFF PRESSURE IN HPA 1021.1 1020.1 1016.4 1014.1 1012.5 1012.5 1011.4 1011.8 1021.7 1023.4 1019.5 1026.1 1017.6 MAX. QFF PRESSURE IN HPA 1035.7 1038.7 1029.6 1029.5 1022.1 1019.2 1017.1 1019.2 1027.2 1033.9 1030.8 1045.0 1045.0 DAY 9 19 1 5 18 28 2 8 23 24 7 7 MIN. QFF PRESSURE IN HPA 1005.5 1000.6 1003.4 1001.5 1002.0 1003.3 1005.7 1005.7 1014.6 1013.3 1009.8 1007.7 1000.6 DAY 16 1 7 24 1 2 20 1 8 15 26 1 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 866.2 864.6 865.3 866.3 866.9 867.0 867.1 868.1 874.6 874.5 868.9 870.2 868.3 MAX. QFE PRESSURE IN HPA 875.6 876.6 872.6 875.1 873.1 870.1 870.5 873.0 879.2 880.2 877.0 878.8 880.2 DAY 9 18 1 5 19 21 13 15 23 24 2 22 MIN. QFE PRESSURE IN HPA 855.0 850.5 854.8 857.0 857.2 862.7 862.8 863.7 870.6 868.4 859.8 855.9 850.5 DAY 16 1 7 2 1 2 20 1 1 14 26 4 MEAN QNH PRESSURE IN HPA 1016.4 1014.6 1015.4 1016.6 1017.2 1017.4 1017.5 1018.6 1026.0 1026.0 1019.5 1021.0 1018.9 MAX. QNH PRESSURE IN HPA 1027.2 1028.3 1023.7 1026.6 1024.3 1020.9 1021.4 1024.2 1031.3 1032.4 1028.8 1030.8 1032.4 DAY 9 18 1 5 19 21 13 15 23 24 2 22 MIN. QNH PRESSURE IN HPA 1003.7 998.6 1003.5 1006.0 1006.2 1012.5 1012.6 1013.6 1021.5 1019.0 1009.2 1004.7 998.6 DAY 16 1 7 2 1 2 20 1 1 14 26 4 MEAN QFF PRESSURE IN HPA 1021.8 1020.5 1017.8 1015.5 1014.1 1013.6 1012.6 1013.2 1023.7 1025.2 1020.9 1027.3 1018.8 MAX. QFF PRESSURE IN HPA 1036.2 1039.4 1029.8 1031.1 1023.6 1019.6 1018.4 1019.4 1030.5 1034.2 1030.8 1046.4 1046.4 DAY 9 19 1 5 18 28 2 8 23 24 2 7 MIN. QFF PRESSURE IN HPA 1004.1 997.8 1001.4 1001.7 1002.2 1004.5 1007.0 1007.3 1016.2 1015.1 1011.0 1009.8 997.8 DAY 16 1 7 24 1 16 20 1 1 19 26 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 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 867.0 865.5 866.2 867.2 867.6 867.3 867.1 868.4 875.1 875.5 869.7 871.0 869.0 MAX. QFE PRESSURE IN HPA 877.0 878.0 873.0 877.0 874.0 870.4 870.9 873.4 879.2 881.4 878.3 879.0 881.4 DAY 9 18 1 5 18 27 13 15 23 11 2 7 MIN. QFE PRESSURE IN HPA 855.4 851.2 854.0 857.2 858.0 862.0 862.6 863.6 871.2 868.9 860.6 856.6 851.2 DAY 16 1 7 2 1 2 20 1 2 14 26 4 MEAN QNH PRESSURE IN HPA 1017.4 1015.6 1016.5 1017.6 1018.0 1017.7 1017.5 1019.0 1026.6 1027.1 1020.4 1022.0 1019.6 MAX. QNH PRESSURE IN HPA 1028.8 1029.9 1024.2 1028.8 1025.3 1021.2 1021.8 1024.7 1031.3 1033.8 1030.2 1031.0 1033.8 DAY 9 18 1 5 18 27 13 15 23 11 2 7 MIN. QNH PRESSURE IN HPA 1004.2 999.4 1002.6 1006.2 1007.1 1011.7 1012.4 1013.5 1022.2 1019.5 1010.1 1005.5 999.4 DAY 16 1 7 2 1 2 20 1 2 14 26 4 MEAN QFF PRESSURE IN HPA 1022.9 1022.0 1018.9 1015.6 1013.9 1013.0 1011.2 1012.4 1022.8 1025.6 1021.6 1028.3 1019.0 MAX. QFF PRESSURE IN HPA 1038.6 1042.0 1030.1 1032.4 1023.4 1020.1 1016.2 1017.7 1028.2 1034.6 1031.6 1047.6 1047.6 DAY 9 19 1 5 18 28 13 7 23 23 2 7 MIN. QFF PRESSURE IN HPA 1004.6 999.5 1000.7 1003.6 1003.7 1003.9 1005.1 1006.7 1017.5 1015.8 1011.9 1010.8 999.5 DAY 16 1 7 30 1 2 20 1 1 19 26 4 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 866.7 865.4 865.6 866.4 866.7 866.5 866.3 867.6 874.3 874.5 868.8 870.2 868.2 MAX. QFE PRESSURE IN HPA 877.0 878.2 872.3 875.0 873.6 870.5 870.7 872.3 878.3 880.2 876.8 878.9 880.2 DAY 9 18 1 5 18 23 13 15 23 11 2 25 MIN. QFE PRESSURE IN HPA 854.2 852.0 852.5 857.0 857.5 860.0 861.5 862.9 869.8 866.8 859.4 856.2 852.0 DAY 16 1 7 2 1 2 20 1 7 14 26 4 MEAN QNH PRESSURE IN HPA 1017.0 1015.5 1015.8 1016.7 1017.0 1016.8 1016.6 1018.0 1025.7 1025.9 1019.4 1021.0 1018.8 MAX. QNH PRESSURE IN HPA 1028.8 1030.1 1023.4 1026.5 1024.9 1021.4 1021.6 1023.4 1030.2 1032.4 1028.5 1030.9 1032.4 DAY 9 18 1 5 18 23 13 15 23 11 2 25 MIN. QNH PRESSURE IN HPA 1002.8 1000.3 1000.9 1006.0 1006.6 1009.4 1011.1 1012.7 1020.6 1017.1 1008.7 1005.1 1000.3 DAY 16 1 7 2 1 2 20 1 7 14 26 4 MEAN QFF PRESSURE IN HPA 1021.7 1021.1 1017.2 1013.7 1012.3 1011.8 1010.1 1011.1 1020.7 1023.3 1019.6 1026.1 1017.4 MAX. QFF PRESSURE IN HPA 1036.6 1038.8 1028.4 1028.4 1021.9 1019.3 1015.7 1017.8 1026.1 1033.2 1030.9 1044.0 1044.0 DAY 9 19 1 4 18 28 13 7 23 24 6 7 MIN. QFF PRESSURE IN HPA 1003.3 999.8 1000.2 1003.7 1002.8 1001.3 1003.3 1004.9 1014.9 1012.5 1008.2 1009.0 999.8 DAY 16 1 7 23 1 2 20 10 27 14 26 3 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 865.5 864.6 864.3 865.3 865.9 865.6 865.5 866.6 873.3 873.5 867.9 869.4 867.3 MAX. QFE PRESSURE IN HPA 876.0 877.1 870.6 873.6 873.0 870.0 869.7 871.2 877.0 879.6 875.2 878.5 879.6 DAY 9 18 1 4 18 23 13 15 23 23 6 21 MIN. QFE PRESSURE IN HPA 854.2 853.5 852.8 855.4 857.0 858.2 860.2 861.4 868.5 865.0 859.0 855.0 852.8 DAY 16 1 7 30 1 2 20 1 7 14 26 3 MEAN QNH PRESSURE IN HPA 1015.7 1014.6 1014.3 1015.5 1016.2 1015.8 1015.6 1016.9 1024.5 1024.8 1018.4 1020.1 1017.7 MAX. QNH PRESSURE IN HPA 1027.6 1028.9 1021.5 1024.9 1024.2 1020.8 1020.4 1022.2 1028.8 1031.7 1026.7 1030.5 1031.7 DAY 9 18 1 4 18 23 13 15 23 23 6 21 MIN. QNH PRESSURE IN HPA 1002.8 1002.0 1001.2 1004.2 1006.0 1007.4 1009.6 1011.0 1019.1 1015.1 1008.3 1003.7 1001.2 DAY 16 1 7 30 1 2 20 1 7 14 26 3 MEAN QFF PRESSURE IN HPA 1020.1 1019.8 1015.5 1012.8 1012.0 1011.2 1009.7 1010.3 1020.4 1022.3 1018.5 1025.0 1016.5 MAX. QFF PRESSURE IN HPA 1035.6 1036.7 1025.3 1026.7 1022.5 1018.3 1015.0 1017.6 1025.7 1032.7 1031.7 1041.8 1041.8 DAY 9 19 1 4 18 27 1 7 23 23 6 7 MIN. QFF PRESSURE IN HPA 1002.5 1002.0 1000.1 1000.3 1002.5 998.4 1002.7 1003.3 1014.2 1010.0 1007.7 1006.2 998.4 DAY 16 1 7 30 5 2 20 10 27 14 26 3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 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 865.8 865.0 864.4 865.3 866.0 865.7 865.4 866.5 873.4 873.8 868.3 870.1 867.5 MAX. QFE PRESSURE IN HPA 876.0 877.1 870.0 874.0 872.5 869.9 869.0 871.0 877.2 880.2 875.1 879.1 880.2 DAY 9 18 31 4 18 23 13 7 13 23 6 21 MIN. QFE PRESSURE IN HPA 855.8 855.2 854.0 855.2 857.6 858.7 860.3 861.0 868.4 865.2 860.2 855.2 854.0 DAY 16 1 7 30 1 2 19 10 7 14 26 3 MEAN QNH PRESSURE IN HPA 1016.0 1015.1 1014.4 1015.4 1016.2 1015.8 1015.6 1016.8 1024.6 1025.1 1018.8 1020.9 1017.9 MAX. QNH PRESSURE IN HPA 1027.6 1028.9 1020.8 1025.3 1023.6 1020.7 1019.6 1021.9 1029.0 1032.4 1026.6 1031.1 1032.4 DAY 9 18 31 4 18 23 13 7 13 23 6 21 MIN. QNH PRESSURE IN HPA 1004.6 1003.9 1002.6 1003.9 1006.7 1007.9 1009.7 1010.5 1019.0 1015.3 1009.6 1003.9 1002.6 DAY 16 1 7 30 1 2 19 10 7 14 26 3 MEAN QFF PRESSURE IN HPA 1021.1 1021.1 1016.7 1014.0 1013.0 1011.8 1010.5 1011.0 1021.9 1024.1 1020.1 1027.1 1017.7 MAX. QFF PRESSURE IN HPA 1035.5 1037.4 1025.5 1028.5 1022.5 1019.1 1015.9 1017.2 1027.0 1034.1 1031.7 1043.3 1043.3 DAY 9 19 24 4 18 27 1 7 23 23 6 7 MIN. QFF PRESSURE IN HPA 1005.2 1004.1 1001.8 1000.1 1003.9 1000.9 1004.3 1004.6 1015.9 1011.3 1010.5 1007.0 1000.1 DAY 16 1 7 30 12 15 30 10 27 14 26 3 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 866.4 865.9 865.2 866.2 866.8 866.8 866.8 868.0 874.5 874.6 868.9 870.8 868.4 MAX. QFE PRESSURE IN HPA 876.0 877.8 871.0 875.1 872.9 870.8 870.4 872.0 878.2 880.9 876.0 880.2 880.9 DAY 9 18 22 4 18 27 9 7 13 23 6 21 MIN. QFE PRESSURE IN HPA 858.0 856.5 856.5 856.6 858.5 861.0 861.8 863.0 868.6 867.5 861.0 855.8 855.8 DAY 16 8 7 30 1 15 19 1 7 14 30 3 MEAN QNH PRESSURE IN HPA 1016.6 1016.1 1015.4 1016.5 1017.2 1017.1 1017.1 1018.5 1025.9 1026.0 1019.5 1021.7 1019.0 MAX. QNH PRESSURE IN HPA 1027.6 1029.7 1021.9 1026.6 1024.1 1021.7 1021.2 1023.1 1030.1 1033.2 1027.6 1032.4 1033.2 DAY 9 18 22 4 18 27 9 7 13 23 6 21 MIN. QNH PRESSURE IN HPA 1007.1 1005.4 1005.4 1005.5 1007.7 1010.5 1011.4 1012.8 1019.2 1017.9 1010.5 1004.6 1004.6 DAY 16 8 7 30 1 15 19 1 7 14 30 3 MEAN QFF PRESSURE IN HPA 1022.0 1022.5 1017.8 1014.4 1013.2 1012.4 1010.8 1011.8 1022.0 1024.5 1020.8 1028.1 1018.4 MAX. QFF PRESSURE IN HPA 1038.3 1039.5 1025.6 1030.8 1022.8 1020.7 1016.2 1018.6 1026.9 1034.5 1032.8 1044.7 1044.7 DAY 9 18 1 4 17 27 9 6 22 23 6 6 MIN. QFF PRESSURE IN HPA 1009.1 1007.0 1004.6 1001.0 1005.1 1002.4 1004.6 1005.3 1015.1 1012.7 1010.5 1008.0 1001.0 DAY 16 1 6 30 1 1 19 10 7 14 30 3 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 866.1 865.8 865.2 866.3 867.0 866.9 867.1 868.2 874.4 874.5 868.6 870.6 868.4 MAX. QFE PRESSURE IN HPA 875.8 877.0 870.4 876.0 873.0 871.0 870.9 872.0 878.3 880.7 876.0 879.6 880.7 DAY 18 17 22 4 17 20 9 7 13 23 1 21 MIN. QFE PRESSURE IN HPA 855.0 855.9 856.0 857.0 859.0 861.6 862.1 863.6 869.0 868.7 860.0 855.5 855.0 DAY 31 11 6 1 1 15 19 1 7 14 25 3 MEAN QNH PRESSURE IN HPA 1016.4 1016.0 1015.4 1016.6 1017.3 1017.3 1017.5 1018.8 1025.8 1026.0 1019.2 1021.4 1019.0 MAX. QNH PRESSURE IN HPA 1027.4 1028.8 1021.2 1027.6 1024.2 1021.9 1021.8 1023.1 1030.2 1033.0 1027.6 1031.7 1033.0 DAY 18 17 22 4 17 20 9 7 13 23 1 21 MIN. QNH PRESSURE IN HPA 1003.7 1004.7 1004.8 1006.0 1008.3 1011.2 1011.8 1013.5 1019.6 1019.3 1009.4 1004.3 1003.7 DAY 31 11 6 1 1 15 19 1 7 14 25 3 MEAN QFF PRESSURE IN HPA 1021.0 1021.8 1016.7 1013.6 1012.7 1012.5 1011.1 1012.0 1021.0 1023.3 1019.4 1026.7 1017.6 MAX. QFF PRESSURE IN HPA 1034.5 1038.3 1025.1 1031.0 1022.5 1019.1 1016.6 1019.3 1026.1 1033.9 1031.3 1044.9 1044.9 DAY 8 18 1 4 17 27 9 7 22 23 6 6 MIN. QFF PRESSURE IN HPA 1002.6 1006.7 1001.6 1002.1 1004.2 1003.5 1004.8 1006.5 1014.4 1012.4 1008.9 1007.8 1001.6 DAY 31 1 6 23 12 15 19 10 7 14 30 3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.0 0.4 3.6 9.7 12.7 16.0 17.4 17.8 14.3 8.3 6.3 -1.7 8.8 MINIMUN AIR TEMPERATURE (C) -4.8 -5.5 -4.1 2.2 4.1 7.6 11.0 11.4 7.3 2.4 -2.1 -8.5 1.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 16 19 19 1 0 0 0 0 0 0 13 29 97 DAYS WITH FREEZING MIN.<= 0 30 28 28 8 4 0 0 0 0 10 19 31 158 TEMPERATURE RECORDS LOWEST(C) -13.0 -11.8 -8.5 -5.2 -1.2 1.4 6.4 5.0 3.2 -3.0 -12.6 -22.0 -22.0 DAY 23 7 1 8 11 1 1 20 30 21 30 19 MAXIMUM AIR TEMPERATURE (C) 7.6 7.4 12.5 17.0 20.3 24.2 23.5 24.3 21.9 15.2 15.2 5.2 16.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 5 0 3 0 1 0 0 9 DAYS WITH MAXIMUM TEMP. <= 0 3 1 2 0 0 0 0 0 0 0 0 9 15 TEMPERATURE RECORDS HIGHEST(C) 14.0 14.6 21.6 23.2 27.0 34.8 29.6 38.2 29.6 30.0 20.4 14.0 38.2 DAY 4 21 24 30 21 21 12 12 16 3 22 30 DIF. BETWEEN (MAX.-MIN.) (C) 12.4 12.9 16.6 14.8 16.2 16.6 12.5 12.9 14.6 12.8 17.3 13.7 14.5 MEAN DAILY TEMP. (MDT) (C) 1.4 1.0 4.2 9.6 12.2 15.9 17.2 17.9 14.6 8.8 6.6 -1.7 9.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 3.0 0.0 3.2 0.0 0.0 0.0 0.0 6.2 HEATING DEG. DAYS(BASE 18 0C) 513.6 476.3 428.5 252.0 179.9 76.1 32.6 26.2 104.8 287.7 343.2 609.6 3330.6 DEWPOINT (MEAN C) -3.2 -3.8 -2.3 2.9 5.8 9.3 10.4 12.7 10.4 5.2 -2.2 -6.9 3.2 MIXING RATIO (G/KG) 3.55 3.39 3.83 5.58 6.82 8.64 9.38 10.93 9.40 6.54 4.04 2.73 6.24 VAPOUR PRESSURE (HPA) 4.93 4.71 5.31 7.71 9.43 11.88 12.85 14.97 12.93 9.08 5.61 3.81 8.60 SATURATION DEF. (HPA) 2.08 1.94 3.38 5.09 6.08 7.56 7.67 6.38 4.36 2.71 5.14 2.06 4.54 RELATIVE HUMIDITY (MEAN %) 76 77 72 68 68 69 66 76 80 84 59 73 72 RELATIVE HUMIDITY (MAX. %) 93 94 94 92 94 94 87 95 96 98 82 89 92 RELATIVE HUMIDITY (MIN. %) 54 54 42 41 39 43 47 52 58 63 34 53 48 RELATIVE HUMIDITY (MEAN% 03UTC) 88 90 90 85 90 90 82 89 92 94 75 84 87 RELATIVE HUMIDITY (MEAN% 09UTC) 60 63 47 49 44 45 48 55 60 68 40 61 53 RELATIVE HUMIDITY (MEAN% 15UTC) 70 69 64 63 61 62 62 74 81 85 57 66 68 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 17.5 19.1 29.4 33.5 13.6 25.3 2.6 0.5 45.1 25.1 2.0 8.4 222.1 DAYS WITH PRECIPITATION >=10 0 1 0 1 0 1 0 0 1 1 0 0 5 DAYS WITH PRECIPITATION >= 5 1 1 2 2 1 1 0 0 3 2 0 0 13 DAYS WITH PRECIPITATION >= 1 5 3 8 8 4 8 1 0 5 2 1 2 47 DAYS WITH PRECIPITATION 8 8 10 12 9 12 3 4 7 10 3 8 94 GREATEST DAILY PRECIPITATION 9.0 15.0 6.6 12.0 6.0 12.0 2.0 0.2 27.0 14.0 2.0 4.5 27.0 DAY 16 5 10 24 1 22 2 24 20 12 25 17 DAY WITH THUNDER STORM 0 0 0 3 2 2 1 0 2 0 0 0 10 DAYS WITH SNOW OR SLEET 6 8 7 1 0 0 0 0 0 0 1 10 33 DAYS WITH DUST 0 0 1 0 0 1 1 0 0 1 0 0 4 WIND DIRECTION (PREVAILING) 225 90 90 90 90 90 90 90 90 90 225 90 90 PREVAILING WIND SPEED(KNOTS) 15.5 11.9 13.2 13.8 15.3 14.3 16.4 16.0 15.4 13.3 17.0 12.7 14.6 PREVAILING WIND PERCENT 24.6 21.4 20.2 20.4 32.3 35.0 62.5 56.5 43.8 37.1 25.4 21.4 30.7 CALMS PERCENT OF WIND 39.1 47.3 51.6 36.3 44.4 46.3 29.4 34.3 45.4 48.0 42.5 35.5 41.6 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 207 158 134 185 118 88 88 85 86 99 219 191 115 VECTOR WIND MAGNITUDE(KNOTS) 4.0 2.6 1.5 2.4 4.3 5.0 10.8 9.3 6.8 4.3 6.2 1.8 3.3 WIND STEADINESES (MEAN %) 54.1 42.6 24.6 26.7 50.6 72.5 97.3 93.9 90.7 66.2 75.6 24.3 41.8 WIND SPEED (MEAN KNOTS) 7.4 6.1 6.1 9.0 8.5 6.9 11.1 9.9 7.5 6.5 8.2 7.4 7.9 FASTEST WIND DIRECTION 210 240 270 220 240 210 90 90 80 210 240 200 270 FASTEST WIND SPEED (KNOTS) 33 33 43 35 39 31 29 27 29 29 39 31 43 DAY 16 8 25 19 7 29 14 7 1 3 3 22 DAYS WITH SKY CLEAR (0-2)/8 17 9 13 7 14 17 20 19 16 12 20 15 179 DAYS WITH P.CLOUDY (3-6)/8 8 13 12 16 15 11 10 7 7 11 9 6 125 DAYS WITH CLOUDY (7-8)/8 6 6 6 7 2 2 1 5 7 8 1 10 61 DAYS WITH VISIBILITY =< 2 KM 7 15 14 6 9 6 1 11 10 17 4 11 111 DURATION OF SUNSHINE HOURS 190.5 138.4 206.9 ****** ****** 263.8 319.4 279.4 232.8 199.3 235.3 164.2 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 870.4 869.7 868.3 867.0 870.6 867.4 865.7 867.5 869.2 873.2 869.6 872.0 869.2 MAX. QFE PRESSURE IN HPA 881.3 877.8 878.8 875.0 876.1 872.2 870.1 872.6 876.4 883.0 879.6 879.7 883.0 DAY-HOUR 6-18 12- 6 3- 6 6-21 25-21 1- 3 4- 6 19-18 13- 6 17- 6 15- 6 9-21 MIN. QFE PRESSURE IN HPA 860.3 857.5 856.8 858.2 860.9 855.6 859.7 860.8 862.4 862.6 860.3 865.2 855.6 DAY-HOUR 16-21 8-12 26-12 19-12 2-12 29-12 15-15 22-15 4-15 3-15 11- 9 25-12 MEAN QNH PRESSURE IN HPA 1021.2 1020.5 1018.9 1017.3 1021.4 1017.8 1015.9 1018.0 1019.8 1024.4 1020.3 1023.0 1019.9 MAX. QNH PRESSURE IN HPA 1033.6 1029.7 1030.8 1026.5 1027.7 1023.3 1020.9 1023.7 1028.1 1035.6 1031.7 1031.8 1035.6 DAY-HOUR 6-18 12- 6 3- 6 6-21 25-21 1- 3 4- 6 19-18 13- 6 17- 6 15- 6 9-21 MIN. QNH PRESSURE IN HPA 1009.7 1006.6 1005.8 1007.4 1010.4 1004.4 1009.1 1010.3 1012.1 1012.4 1009.7 1015.3 1004.4 DAY-HOUR 16-21 8-12 26-12 19-12 2-12 29-12 15-15 22-15 4-15 3-15 11- 9 25-12 MEAN QFF PRESSURE IN HPA 1024.4 1024.0 1020.5 1015.2 1017.6 1011.9 1009.2 1011.0 1014.9 1023.2 1020.4 1028.1 1018.4 MAX. QFF PRESSURE IN HPA 1039.1 1034.8 1037.1 1028.9 1025.7 1022.0 1015.6 1020.2 1027.1 1038.0 1036.0 1041.8 1041.8 DAY-HOUR 6- 6 12- 6 3- 6 7- 0 28- 3 1- 3 23- 3 20- 3 21-18 17- 6 15- 6 19- 6 MIN. QFF PRESSURE IN HPA 1009.0 1007.9 1002.2 1001.5 1004.4 994.8 1001.2 1001.8 1004.4 1003.4 1005.5 1016.1 994.8 DAY-HOUR 16-21 8-12 25-12 19- 6 2-12 29-12 15-18 12-12 4-12 3-15 8- 0 31-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 870.4 869.8 868.4 867.0 870.6 867.7 865.9 867.8 869.5 873.3 869.8 872.3 869.4 MAX. QFE PRESSURE IN HPA 881.0 875.7 877.9 874.5 875.5 871.8 870.0 872.2 875.7 882.1 877.2 879.5 882.1 DAY 7 13 3 7 26 1 8 20 27 25 16 10 MIN. QFE PRESSURE IN HPA 860.5 862.1 859.6 859.3 863.2 859.0 860.9 864.6 864.0 865.7 861.4 866.0 859.0 DAY 17 8 17 19 7 29 16 3 20 4 8 22 MEAN QNH PRESSURE IN HPA 1021.2 1020.6 1019.0 1017.4 1021.5 1018.1 1016.2 1018.3 1020.2 1024.5 1020.5 1023.4 1020.1 MAX. QNH PRESSURE IN HPA 1033.3 1027.3 1029.8 1025.9 1027.0 1022.8 1020.8 1023.3 1027.3 1034.6 1029.0 1031.6 1034.6 DAY 7 13 3 7 26 1 8 20 27 25 16 10 MIN. QNH PRESSURE IN HPA 1010.0 1011.8 1008.9 1008.6 1013.0 1008.3 1010.4 1014.6 1014.0 1015.9 1011.0 1016.2 1008.3 DAY 17 8 17 19 7 29 16 3 20 4 8 22 MEAN QFF PRESSURE IN HPA 1023.9 1023.6 1020.2 1015.1 1017.9 1012.8 1009.6 1011.2 1015.1 1022.8 1019.7 1027.7 1018.3 MAX. QFF PRESSURE IN HPA 1037.7 1031.6 1033.9 1028.9 1024.3 1019.9 1014.8 1019.0 1026.4 1035.4 1031.8 1039.2 1039.2 DAY 7 25 3 7 26 1 8 20 27 25 16 19 MIN. QFF PRESSURE IN HPA 1010.4 1011.9 1004.0 1002.7 1008.5 999.8 1001.9 1005.8 1007.4 1007.6 1005.5 1017.2 999.8 DAY 17 4 25 19 3 29 16 12 5 4 8 31 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 870.4 869.9 868.7 867.4 870.9 868.1 866.3 868.3 869.6 873.4 870.0 872.2 869.6 MAX. QFE PRESSURE IN HPA 880.6 876.4 878.1 873.8 875.8 872.2 869.7 872.3 875.9 882.1 877.5 879.5 882.1 DAY 7 12 3 7 26 1 23 20 13 25 15 10 MIN. QFE PRESSURE IN HPA 860.5 861.3 859.3 858.3 863.1 858.6 861.7 864.6 864.1 866.8 861.2 865.8 858.3 DAY 17 8 26 19 2 29 16 12 19 4 24 22 MEAN QNH PRESSURE IN HPA 1021.2 1020.7 1019.3 1017.8 1021.9 1018.6 1016.6 1018.8 1020.4 1024.7 1020.8 1023.3 1020.3 MAX. QNH PRESSURE IN HPA 1032.8 1028.1 1030.0 1025.1 1027.4 1023.3 1020.4 1023.4 1027.5 1034.6 1029.3 1031.6 1034.6 DAY 7 12 3 7 26 1 23 20 13 25 15 10 MIN. QNH PRESSURE IN HPA 1010.0 1010.9 1008.6 1007.5 1012.9 1007.8 1011.3 1014.6 1014.1 1017.1 1010.8 1016.0 1007.5 DAY 17 8 26 19 2 29 16 12 19 4 24 22 MEAN QFF PRESSURE IN HPA 1025.1 1025.0 1021.9 1016.7 1019.2 1013.7 1010.6 1012.9 1016.6 1024.4 1022.1 1029.2 1019.8 MAX. QFF PRESSURE IN HPA 1037.6 1032.5 1035.7 1028.5 1025.7 1022.0 1015.6 1020.2 1026.2 1036.2 1035.1 1039.7 1039.7 DAY 7 25 3 7 28 1 23 20 27 17 15 19 MIN. QFF PRESSURE IN HPA 1011.3 1012.2 1004.8 1002.2 1008.3 1000.2 1002.3 1007.4 1008.8 1010.7 1006.8 1018.4 1000.2 DAY 17 8 25 19 2 29 16 12 19 4 24 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 871.3 870.7 869.4 867.8 871.1 867.9 866.3 868.4 870.0 874.2 870.6 872.8 870.1 MAX. QFE PRESSURE IN HPA 881.0 877.8 878.8 873.6 876.1 872.1 870.1 872.3 876.4 883.0 879.6 879.6 883.0 DAY 6 12 3 13 26 1 4 24 13 17 15 10 MIN. QFE PRESSURE IN HPA 863.4 860.8 859.0 858.4 862.0 858.6 862.0 864.6 864.8 867.8 861.8 865.4 858.4 DAY 11 8 26 19 2 29 16 12 19 3 11 22 MEAN QNH PRESSURE IN HPA 1022.3 1021.6 1020.1 1018.3 1022.1 1018.4 1016.6 1019.0 1020.8 1025.6 1021.5 1024.0 1020.9 MAX. QNH PRESSURE IN HPA 1033.3 1029.7 1030.8 1024.9 1027.7 1023.2 1020.9 1023.4 1028.1 1035.6 1031.7 1031.7 1035.6 DAY 6 12 3 13 26 1 4 24 13 17 15 10 MIN. QNH PRESSURE IN HPA 1013.3 1010.3 1008.3 1007.6 1011.7 1007.8 1011.7 1014.6 1014.9 1018.3 1011.4 1015.5 1007.6 DAY 11 8 26 19 2 29 16 12 19 3 11 22 MEAN QFF PRESSURE IN HPA 1026.1 1025.8 1022.2 1016.2 1017.9 1012.1 1009.6 1011.8 1015.9 1024.7 1022.3 1029.8 1019.5 MAX. QFF PRESSURE IN HPA 1039.1 1034.8 1037.1 1027.5 1024.4 1019.5 1014.6 1017.7 1026.8 1038.0 1036.0 1041.8 1041.8 DAY 6 12 3 7 28 1 23 24 27 17 15 19 MIN. QFF PRESSURE IN HPA 1015.1 1012.7 1005.3 1001.5 1006.7 998.3 1002.9 1003.6 1009.0 1010.8 1009.1 1017.5 998.3 DAY 12 8 25 19 2 29 16 12 4 3 11 22 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 870.3 869.9 868.2 867.1 870.4 867.2 865.6 867.5 869.0 873.2 869.3 871.9 869.1 MAX. QFE PRESSURE IN HPA 880.5 876.8 877.5 872.4 875.1 871.2 869.7 871.9 874.8 882.9 878.7 879.3 882.9 DAY 6 12 2 13 26 1 4 24 13 17 15 10 MIN. QFE PRESSURE IN HPA 861.9 859.0 857.6 858.9 861.6 857.1 861.2 863.3 864.6 865.0 860.3 865.3 857.1 DAY 11 8 26 19 2 29 16 22 4 3 11 22 MEAN QNH PRESSURE IN HPA 1021.1 1020.7 1018.8 1017.4 1021.2 1017.6 1015.7 1017.9 1019.7 1024.4 1020.0 1022.9 1019.8 MAX. QNH PRESSURE IN HPA 1032.7 1028.5 1029.3 1023.5 1026.6 1022.2 1020.4 1022.9 1026.2 1035.5 1030.7 1031.4 1035.5 DAY 6 12 2 13 26 1 4 24 13 17 15 10 MIN. QNH PRESSURE IN HPA 1011.6 1008.3 1006.7 1008.1 1011.2 1006.1 1010.8 1013.2 1014.6 1015.1 1009.7 1015.4 1006.1 DAY 11 8 26 19 2 29 16 22 4 3 11 22 MEAN QFF PRESSURE IN HPA 1023.7 1023.5 1019.5 1014.7 1016.7 1011.0 1008.6 1010.4 1013.8 1022.4 1018.9 1027.3 1017.5 MAX. QFF PRESSURE IN HPA 1037.9 1032.6 1032.6 1023.5 1022.7 1017.6 1013.5 1016.9 1024.3 1037.6 1033.4 1037.0 1037.9 DAY 6 12 2 7 28 1 23 24 21 17 15 18 MIN. QFF PRESSURE IN HPA 1012.1 1009.3 1004.8 1002.6 1005.4 996.4 1002.5 1002.9 1006.3 1007.2 1006.0 1016.3 996.4 DAY 11 8 25 19 2 29 16 12 4 3 11 22 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 869.2 868.5 867.0 866.0 869.7 866.5 864.6 866.2 868.0 872.1 868.1 870.8 868.1 MAX. QFE PRESSURE IN HPA 879.9 874.9 875.9 870.6 874.6 871.6 868.4 871.0 874.4 882.2 877.4 878.0 882.2 DAY 6 13 2 6 23 2 23 24 21 17 15 9 MIN. QFE PRESSURE IN HPA 860.9 857.5 856.8 858.2 860.9 855.6 860.5 861.0 862.4 863.9 862.2 865.2 855.6 DAY 11 8 26 19 2 29 15 22 19 3 25 25 MEAN QNH PRESSURE IN HPA 1019.9 1019.1 1017.4 1016.2 1020.5 1016.8 1014.7 1016.5 1018.5 1023.2 1018.6 1021.7 1018.6 MAX. QNH PRESSURE IN HPA 1032.1 1026.4 1027.5 1021.5 1026.0 1022.6 1019.0 1021.9 1025.8 1034.7 1029.2 1029.9 1034.7 DAY 6 13 2 6 23 2 23 24 21 17 15 9 MIN. QNH PRESSURE IN HPA 1010.4 1006.6 1005.8 1007.4 1010.4 1004.4 1010.0 1010.5 1012.1 1013.8 1011.9 1015.3 1004.4 DAY 11 8 26 19 2 29 15 22 19 3 25 25 MEAN QFF PRESSURE IN HPA 1022.4 1022.0 1018.5 1013.9 1016.7 1011.2 1008.0 1009.2 1013.1 1021.4 1017.7 1025.9 1016.7 MAX. QFF PRESSURE IN HPA 1037.0 1029.8 1030.4 1024.0 1023.9 1019.7 1012.8 1016.0 1024.3 1037.2 1032.4 1035.8 1037.2 DAY 6 17 2 6 25 2 23 24 21 17 15 19 MIN. QFF PRESSURE IN HPA 1011.5 1007.9 1002.2 1001.5 1004.4 994.8 1002.0 1001.8 1004.4 1003.9 1007.0 1016.1 994.8 DAY 11 8 25 19 2 29 15 12 4 3 8 31 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 870.0 869.1 867.5 866.1 869.8 866.4 864.5 866.2 868.3 872.6 869.1 871.5 868.4 MAX. QFE PRESSURE IN HPA 880.8 875.5 876.2 871.4 874.9 869.6 868.0 871.4 875.4 882.4 878.0 878.9 882.4 DAY 6 12 2 6 25 1 23 19 21 17 15 9 MIN. QFE PRESSURE IN HPA 861.6 859.0 858.5 859.2 862.7 856.0 859.7 860.8 862.4 862.6 863.3 866.3 856.0 DAY 11 8 25 19 2 29 15 22 4 3 7 25 MEAN QNH PRESSURE IN HPA 1020.8 1019.7 1017.9 1016.3 1020.5 1016.7 1014.6 1016.4 1018.8 1023.7 1019.8 1022.5 1019.0 MAX. QNH PRESSURE IN HPA 1033.1 1027.0 1027.8 1022.4 1026.4 1020.3 1018.5 1022.4 1026.9 1034.9 1029.9 1030.9 1034.9 DAY 6 12 2 6 25 1 23 19 21 17 15 9 MIN. QNH PRESSURE IN HPA 1011.2 1008.3 1007.7 1008.5 1012.5 1004.8 1009.1 1010.3 1012.1 1012.4 1013.2 1016.6 1004.8 DAY 11 8 25 19 2 29 15 22 4 3 7 25 MEAN QFF PRESSURE IN HPA 1024.6 1023.9 1020.4 1015.0 1017.7 1011.7 1008.4 1010.2 1014.8 1023.3 1020.9 1028.3 1018.3 MAX. QFF PRESSURE IN HPA 1038.7 1031.6 1032.3 1026.4 1024.0 1017.8 1013.6 1016.5 1026.0 1037.8 1035.5 1037.7 1038.7 DAY 6 13 2 6 27 1 7 19 21 17 15 9 MIN. QFF PRESSURE IN HPA 1013.3 1009.9 1004.8 1003.2 1007.8 995.5 1002.3 1004.2 1005.6 1003.4 1010.5 1019.8 995.5 DAY 11 8 25 19 5 29 15 22 4 3 23 31 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 870.8 869.9 868.7 867.2 870.9 867.4 865.9 867.8 869.5 873.6 870.0 872.2 869.5 MAX. QFE PRESSURE IN HPA 881.3 875.6 877.7 874.0 875.5 870.8 869.2 872.6 876.4 882.2 879.0 879.4 882.2 DAY 6 13 2 6 25 1 23 19 21 17 15 9 MIN. QFE PRESSURE IN HPA 862.8 860.1 859.6 860.5 864.6 859.0 860.2 862.7 864.3 864.4 863.6 866.7 859.0 DAY 16 8 25 19 6 29 15 22 19 3 7 21 MEAN QNH PRESSURE IN HPA 1021.7 1020.7 1019.3 1017.6 1021.8 1017.8 1016.2 1018.2 1020.2 1024.8 1020.7 1023.3 1020.2 MAX. QNH PRESSURE IN HPA 1033.6 1027.2 1029.6 1025.3 1027.0 1021.7 1019.9 1023.7 1028.1 1034.7 1031.0 1031.5 1034.7 DAY 6 13 2 6 25 1 23 19 21 17 15 9 MIN. QNH PRESSURE IN HPA 1012.6 1009.5 1008.9 1010.0 1014.6 1008.3 1009.6 1012.5 1014.3 1014.4 1013.5 1017.0 1008.3 DAY 16 8 25 19 6 29 15 22 19 3 7 21 MEAN QFF PRESSURE IN HPA 1025.5 1024.8 1021.2 1015.4 1017.6 1011.4 1009.1 1010.9 1015.2 1023.9 1021.6 1029.1 1018.8 MAX. QFF PRESSURE IN HPA 1038.9 1032.3 1034.3 1027.3 1022.6 1016.9 1014.6 1018.8 1027.1 1037.1 1034.8 1039.7 1039.7 DAY 6 13 2 6 25 23 7 19 21 17 15 18 MIN. QFF PRESSURE IN HPA 1013.1 1011.1 1006.2 1004.9 1008.9 997.0 1001.2 1003.5 1007.1 1005.3 1010.4 1020.5 997.0 DAY 16 8 25 19 6 29 15 12 4 3 23 25 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 870.6 870.0 868.7 867.3 871.1 867.8 866.3 868.2 869.6 873.5 870.1 872.3 869.6 MAX. QFE PRESSURE IN HPA 881.2 876.0 878.4 875.0 876.1 871.3 869.8 872.5 876.2 881.9 878.6 879.7 881.9 DAY 6 13 2 6 25 2 7 19 26 24 15 9 MIN. QFE PRESSURE IN HPA 860.3 861.5 859.0 861.5 863.6 859.3 860.6 864.6 864.6 865.0 863.2 865.8 859.0 DAY 16 8 25 19 6 28 15 7 19 3 7 21 MEAN QNH PRESSURE IN HPA 1021.5 1020.7 1019.3 1017.7 1022.0 1018.3 1016.5 1018.7 1020.4 1024.8 1020.9 1023.4 1020.3 MAX. QNH PRESSURE IN HPA 1033.5 1027.6 1030.3 1026.5 1027.7 1022.3 1020.6 1023.6 1027.8 1034.3 1030.6 1031.8 1034.3 DAY 6 13 2 6 25 2 7 19 26 24 15 9 MIN. QNH PRESSURE IN HPA 1009.7 1011.1 1008.3 1011.1 1013.5 1008.6 1010.1 1014.6 1014.6 1015.1 1013.0 1016.0 1008.3 DAY 16 8 25 19 6 28 15 7 19 3 7 21 MEAN QFF PRESSURE IN HPA 1024.0 1023.6 1020.1 1015.0 1017.6 1011.7 1009.4 1011.2 1014.7 1022.9 1020.0 1027.7 1018.2 MAX. QFF PRESSURE IN HPA 1038.2 1031.6 1034.3 1027.5 1024.1 1017.5 1013.8 1018.8 1026.6 1035.8 1032.5 1039.0 1039.0 DAY 6 12 2 6 27 22 7 19 26 17 15 18 MIN. QFF PRESSURE IN HPA 1009.0 1012.1 1005.8 1005.7 1007.4 998.1 1001.7 1005.3 1007.7 1006.5 1007.0 1017.7 998.1 DAY 16 8 25 18 6 29 15 12 4 3 23 21 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -3.8 -1.7 0.6 6.6 13.9 14.6 18.7 17.5 16.1 10.0 3.3 4.6 8.4 MINIMUN AIR TEMPERATURE (C) -9.0 -7.1 -4.2 0.4 6.6 7.1 10.8 10.5 9.4 4.2 -1.8 -1.0 2.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 1 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 26 22 14 4 0 0 0 0 0 1 10 11 88 DAYS WITH FREEZING MIN.<= 0 28 26 30 12 1 0 0 0 0 7 20 19 143 TEMPERATURE RECORDS LOWEST(C) -20.0 -28.6 -16.0 -9.0 -1.0 2.2 4.0 5.2 4.0 -4.0 -8.6 -8.0 -28.6 DAY 14 4 1 5 2 7 15 17 11 19 13 3 MAXIMUM AIR TEMPERATURE (C) 1.9 4.9 6.3 13.5 20.8 21.7 25.4 24.2 24.0 17.2 10.9 11.0 15.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 2 1 1 5 8 0 0 0 17 DAYS WITH MAXIMUM TEMP. <= 0 11 8 5 0 0 0 0 0 0 0 0 0 24 TEMPERATURE RECORDS HIGHEST(C) 12.6 14.6 20.0 22.0 30.6 32.4 32.8 30.6 33.2 27.4 17.0 16.8 33.2 DAY 3 24 30 29 31 29 24 21 7 3 1 4 DIF. BETWEEN (MAX.-MIN.) (C) 10.9 12.0 10.5 13.1 14.2 14.6 14.6 13.7 14.6 13.0 12.7 12.0 13.0 MEAN DAILY TEMP. (MDT) (C) -3.6 -1.1 1.0 6.9 13.7 14.4 18.1 17.4 16.7 10.7 4.5 5.0 8.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.0 1.2 1.5 6.3 0.0 0.0 0.0 9.0 HEATING DEG. DAYS(BASE 18 0C) 669.0 554.0 525.6 332.8 136.8 115.6 20.9 35.5 60.5 227.7 404.1 403.2 3485.7 DEWPOINT (MEAN C) -7.1 -6.0 -2.6 1.1 8.0 9.6 13.2 12.6 11.0 5.4 0.9 -0.3 3.8 MIXING RATIO (G/KG) 2.73 2.99 3.73 4.96 7.90 8.82 11.28 10.85 9.81 6.66 4.83 4.42 6.58 VAPOUR PRESSURE (HPA) 3.81 4.15 5.17 6.86 10.90 12.14 15.47 14.89 13.47 9.23 6.73 6.13 9.08 SATURATION DEF. (HPA) 1.30 1.88 1.68 3.58 5.95 5.29 7.00 6.08 6.11 3.93 1.43 2.80 3.92 RELATIVE HUMIDITY (MEAN %) 81 77 83 74 73 76 74 77 79 79 88 75 78 RELATIVE HUMIDITY (MAX. %) 93 93 96 96 95 97 96 95 97 96 99 92 95 RELATIVE HUMIDITY (MIN. %) 65 58 65 46 47 53 54 55 54 55 59 52 55 RELATIVE HUMIDITY (MEAN% 03UTC) 85 86 93 91 90 93 92 93 93 91 97 86 91 RELATIVE HUMIDITY (MEAN% 09UTC) 74 69 71 53 52 56 55 56 57 58 65 58 60 RELATIVE HUMIDITY (MEAN% 15UTC) 80 72 77 67 66 68 66 73 77 76 90 71 74 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 23.9 26.6 33.4 57.2 38.0 4.2 1.0 2.1 10.0 18.4 24.2 6.4 245.4 DAYS WITH PRECIPITATION >=10 0 1 0 2 1 0 0 0 0 0 1 0 5 DAYS WITH PRECIPITATION >= 5 2 2 2 3 3 0 0 0 0 1 2 0 15 DAYS WITH PRECIPITATION >= 1 6 4 9 11 7 2 0 1 2 4 4 3 53 DAYS WITH PRECIPITATION 10 8 14 18 11 6 5 6 8 13 8 6 113 GREATEST DAILY PRECIPITATION 8.0 11.4 6.4 21.4 13.4 2.0 0.7 1.1 4.6 5.0 14.0 3.2 21.4 DAY 6 2 19 9 8 24 6 31 22 30 11 11 DAY WITH THUNDER STORM 0 0 0 3 4 1 2 1 1 3 0 0 15 DAYS WITH SNOW OR SLEET 9 8 11 1 0 0 0 0 0 0 1 1 31 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 1 1 0 2 WIND DIRECTION (PREVAILING) 90 90 90 90 90 90 90 90 90 90 90 225 90 PREVAILING WIND SPEED(KNOTS) 13.5 11.8 13.3 15.0 14.6 16.6 16.9 17.5 16.1 14.0 12.0 22.6 15.3 PREVAILING WIND PERCENT 17.7 28.4 26.2 22.9 24.6 52.5 52.8 58.1 36.3 28.2 19.2 39.5 31.4 CALMS PERCENT OF WIND 49.6 38.8 36.3 33.8 47.6 30.8 33.5 31.5 40.8 35.9 62.9 25.0 38.8 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 168 164 110 143 104 88 86 89 95 149 110 213 116 VECTOR WIND MAGNITUDE(KNOTS) 2.8 2.6 2.9 2.8 2.8 9.2 9.7 10.5 5.2 3.0 2.2 10.0 3.8 WIND STEADINESES (MEAN %) 43.1 31.7 39.2 30.4 40.6 86.0 95.1 95.5 59.8 33.0 56.4 73.0 43.2 WIND SPEED (MEAN KNOTS) 6.5 8.2 7.4 9.2 6.9 10.7 10.2 11.0 8.7 9.1 3.9 13.7 8.8 FASTEST WIND DIRECTION 210 240 210 210 90 300 80 80 90 230 190 230 230 FASTEST WIND SPEED (KNOTS) 31 49 31 35 35 43 31 31 29 43 25 54 54 DAY 5 9 2 12 24 1 21 6 17 24 1 24 DAYS WITH SKY CLEAR (0-2)/8 8 7 3 4 11 17 15 17 11 13 13 7 126 DAYS WITH P.CLOUDY (3-6)/8 8 8 11 16 14 10 13 8 13 9 7 16 133 DAYS WITH CLOUDY (7-8)/8 15 14 17 10 6 3 3 6 6 9 10 8 107 DAYS WITH VISIBILITY =< 2 KM 14 15 19 14 5 3 6 8 13 18 20 9 144 DURATION OF SUNSHINE HOURS 113.6 128.6 125.7 188.0 249.3 289.5 299.7 272.9 238.9 209.6 146.6 151.2 2413.6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 871.3 868.5 866.9 868.5 869.4 868.6 869.2 868.7 867.6 871.7 875.5 869.7 869.6 MAX. QFE PRESSURE IN HPA 882.4 876.0 873.6 879.8 875.0 875.6 875.8 879.4 879.0 883.0 885.3 878.1 885.3 DAY-HOUR 9-18 13- 6 15-21 4- 6 7- 3 11-21 3- 6 29- 6 30-21 1-18 16- 6 7-21 MIN. QFE PRESSURE IN HPA 859.6 854.8 856.3 856.2 862.6 862.7 864.0 861.5 858.1 860.6 867.8 858.0 854.8 DAY-HOUR 6-12 9-12 2-12 13- 3 28-15 4-12 6-12 7-15 21-15 27- 3 1-12 24-15 MEAN QNH PRESSURE IN HPA 1022.2 1019.1 1017.3 1019.1 1020.0 1019.2 1019.9 1019.3 1018.1 1022.7 1027.1 1020.4 1020.4 MAX. QNH PRESSURE IN HPA 1034.9 1027.6 1024.9 1031.9 1026.5 1027.2 1027.4 1031.5 1031.0 1035.6 1038.2 1030.0 1038.2 DAY-HOUR 9-18 13- 6 15-21 4- 6 7- 3 11-21 3- 6 29- 6 30-21 1-18 16- 6 7-21 MIN. QNH PRESSURE IN HPA 1008.9 1003.5 1005.2 1005.1 1012.4 1012.5 1014.0 1011.1 1007.2 1010.1 1018.3 1007.1 1003.5 DAY-HOUR 6-12 9-12 2-12 13- 3 28-15 4-12 6-12 7-15 21-15 27- 3 1-12 24-15 MEAN QFF PRESSURE IN HPA 1028.5 1024.0 1020.7 1018.9 1015.5 1014.1 1012.4 1012.5 1012.1 1020.5 1029.0 1021.4 1019.1 MAX. QFF PRESSURE IN HPA 1043.2 1039.7 1031.8 1037.3 1025.5 1024.9 1020.5 1026.9 1027.9 1035.4 1042.4 1036.1 1043.2 DAY-HOUR 14- 6 3-18 16-18 4- 3 7- 3 12- 3 3- 3 29- 6 30-21 1-18 12- 6 1- 6 MIN. QFF PRESSURE IN HPA 1011.6 1001.0 1004.8 1002.1 1005.5 1004.8 1005.0 1003.9 997.5 1003.7 1015.9 1005.3 997.5 DAY-HOUR 6-12 9-12 2-12 13- 9 28-15 1-15 24- 9 7-12 8-12 26-21 1-12 29-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 871.4 868.4 866.7 868.3 869.6 868.8 869.4 868.9 867.8 871.8 875.6 869.8 869.7 MAX. QFE PRESSURE IN HPA 882.0 875.4 872.5 878.7 874.4 875.0 874.4 877.4 873.0 882.4 884.8 877.7 884.8 DAY 10 13 16 4 7 12 4 29 27 2 16 8 MIN. QFE PRESSURE IN HPA 863.8 859.0 860.3 857.4 863.8 864.0 864.9 862.4 860.6 860.7 870.7 860.0 857.4 DAY 7 10 3 13 29 19 7 8 8 27 26 25 MEAN QNH PRESSURE IN HPA 1022.4 1019.0 1017.1 1018.9 1020.3 1019.4 1020.2 1019.5 1018.3 1022.8 1027.1 1020.6 1020.5 MAX. QNH PRESSURE IN HPA 1034.4 1026.9 1023.6 1030.7 1025.8 1026.5 1025.8 1029.2 1024.2 1034.9 1037.6 1029.6 1037.6 DAY 10 13 16 4 7 12 4 29 27 2 16 8 MIN. QNH PRESSURE IN HPA 1013.7 1008.3 1009.7 1006.4 1013.7 1014.0 1015.0 1012.1 1010.1 1010.2 1021.6 1009.4 1006.4 DAY 7 10 3 13 29 19 7 8 8 27 26 25 MEAN QFF PRESSURE IN HPA 1028.1 1023.3 1020.2 1018.5 1015.9 1014.3 1013.0 1012.7 1011.8 1020.1 1028.3 1021.1 1018.9 MAX. QFF PRESSURE IN HPA 1042.5 1035.8 1029.1 1035.9 1023.8 1024.2 1019.1 1024.3 1019.3 1034.0 1040.5 1031.5 1042.5 DAY 10 4 16 4 7 12 3 29 24 2 17 1 MIN. QFF PRESSURE IN HPA 1015.1 1006.4 1009.1 1003.2 1007.0 1005.2 1008.2 1004.9 998.2 1004.3 1020.2 1007.8 998.2 DAY 7 10 3 13 29 1 7 8 8 27 23 25 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 871.3 868.5 867.0 868.7 869.9 869.3 869.9 869.3 868.2 872.0 875.8 869.9 870.0 MAX. QFE PRESSURE IN HPA 882.0 875.2 872.7 879.0 875.0 874.6 875.0 877.8 872.9 882.0 884.8 877.1 884.8 DAY 10 13 16 4 7 12 3 29 27 2 16 8 MIN. QFE PRESSURE IN HPA 863.5 859.9 860.2 856.2 864.0 865.0 865.1 863.4 860.5 860.6 870.8 860.8 856.2 DAY 5 9 2 13 29 1 7 8 8 27 26 25 MEAN QNH PRESSURE IN HPA 1022.2 1019.1 1017.3 1019.3 1020.7 1020.0 1020.7 1020.0 1018.7 1023.0 1027.4 1020.6 1020.8 MAX. QNH PRESSURE IN HPA 1034.4 1026.7 1023.9 1031.0 1026.5 1026.0 1026.5 1029.7 1024.1 1034.4 1037.6 1028.9 1037.6 DAY 10 13 16 4 7 12 3 29 27 2 16 8 MIN. QNH PRESSURE IN HPA 1013.4 1009.3 1009.6 1005.1 1014.0 1015.1 1015.2 1013.3 1010.0 1010.1 1021.7 1010.3 1005.1 DAY 5 9 2 13 29 1 7 8 8 27 26 25 MEAN QFF PRESSURE IN HPA 1029.1 1024.6 1021.4 1019.8 1016.8 1015.5 1014.3 1014.2 1013.8 1021.8 1030.2 1022.5 1020.3 MAX. QFF PRESSURE IN HPA 1042.8 1036.4 1030.4 1037.3 1025.5 1024.9 1020.5 1024.7 1021.5 1034.5 1041.9 1034.0 1042.8 DAY 10 4 16 4 7 12 3 29 24 2 18 1 MIN. QFF PRESSURE IN HPA 1014.0 1008.0 1011.5 1002.4 1007.9 1005.7 1008.7 1006.9 999.3 1005.9 1021.6 1009.0 999.3 DAY 5 9 26 13 29 1 6 8 8 27 6 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ARDEBIL (40708) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 15 N LONGITUDE 48 17 E DATA PROCESSING CENTER ELEVATION 1332.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 872.0 869.4 867.5 869.2 870.0 869.2 870.0 869.6 868.6 872.6 876.4 870.6 870.4 MAX. QFE PRESSURE IN HPA 881.5 876.0 873.2 879.8 874.9 875.2 875.8 879.4 873.6 881.5 885.3 878.0 885.3 DAY 10 13 16 4 7 11 3 29 30 1 16 1 MIN. QFE PRESSURE IN HPA 863.6 861.1 858.2 857.9 864.5 864.9 865.2 863.8 861.5 861.8 871.1 860.2 857.9 DAY 5 1 2 13 29 5 7 8 8 27 6 25 MEAN QNH PRESSURE IN HPA 1023.1 1020.1 1018.0 1019.8 1020.8 1019.9 1020.8 1020.3 1019.2 1023.7 1028.1 1021.5 1021.3 MAX. QNH PRESSURE IN HPA 1033.9 1027.6 1024.4 1031.9 1026.4 1026.7 1027.4 1031.5 1024.9 1033.9 1038.2 1029.9 1038.2 DAY 10 13 16 4 7 11 3 29 30 1 16 1 MIN. QNH PRESSURE IN HPA 1013.5 1010.7 1007.4 1007.0 1014.5 1015.0 1015.3 1013.7 1011.1 1011.4 1022.0 1009.6 1007.0 DAY 5 1 2 13 29 5 7 8 8 27 6 25 MEAN QFF PRESSURE IN HPA 1030.1 1025.4 1021.8 1019.6 1016.2 1014.5 1013.0 1013.3 1013.4 1021.9 1030.7 1023.0 1020.3 MAX. QFF PRESSURE IN HPA 1043.2 1038.9 1031.2 1036.4 1023.3 1024.2 1020.2 1026.9 1021.2 1033.4 1042.4 1036.1 1043.2 DAY 14 4 16 4 7 11 3 29 24 2 12 1 MIN. QFF PRESSURE IN HPA 1013.4 1009.7 1009.1 1004.0 1007.9 1006.0 1007.2 1005.8 1000.1 1006.3 1021.3 1007.9 1000.1 DAY 5 9 2 13 24 1 24 8 8 27 6 25 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 871.4 868.7 867.0 868.6 869.3 868.5 869.2 868.6 867.6 871.5 875.3 869.6 869.6 MAX. QFE PRESSURE IN HPA 880.8 875.4 872.8 879.4 874.6 874.4 875.5 878.5 873.8 881.4 885.0 877.0 885.0 DAY 10 13 16 4 7 11 3 29 30 1 16 1 MIN. QFE PRESSURE IN HPA 861.5 859.0 857.1 857.7 864.0 864.2 864.4 863.0 859.6 861.8 869.2 859.6 857.1 DAY 6 9 2 13 29 4 6 8 21 27 1 25 MEAN QNH PRESSURE IN HPA 1022.4 1019.4 1017.4 1019.2 1020.0 1019.1 1019.9 1019.2 1018.0 1022.5 1026.9 1020.3 1020.4 MAX. QNH PRESSURE IN HPA 1033.1 1026.9 1024.0 1031.5 1026.0 1025.8 1027.0 1030.5 1025.1 1033.8 1037.9 1028.8 1037.9 DAY 10 13 16 4 7 11 3 29 30 1 16 1 MIN. QNH PRESSURE IN HPA 1011.1 1008.3 1006.1 1006.8 1014.0 1014.2 1014.4 1012.8 1008.9 1011.4 1019.9 1008.9 1006.1 DAY 6 9 2 13 29 4 6 8 21 27 1 25 MEAN QFF PRESSURE IN HPA 1028.1 1023.7 1020.3 1018.4 1015.1 1013.5 1011.9 1011.7 1011.2 1019.3 1027.9 1020.5 1018.5 MAX. QFF PRESSURE IN HPA 1041.3 1034.2 1030.2 1035.4 1022.7 1022.5 1019.7 1025.3 1020.6 1032.2 1041.0 1032.2 1041.3 DAY 10 4 16 4 26 11 3 29 30 1 16 1 MIN. QFF PRESSURE IN HPA 1012.2 1006.9 1006.3 1002.1 1007.6 1006.7 1005.0 1004.7 998.5 1006.5 1017.4 1006.0 998.5 DAY 5 9 2 13 29 29 24 7 8 27 1 25 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 870.2 867.5 866.2 868.0 868.4 867.7 868.4 867.7 866.3 870.8 874.4 868.7 868.7 MAX. QFE PRESSURE IN HPA 880.4 873.9 872.0 878.3 873.4 874.0 875.1 877.5 874.4 881.2 884.1 876.3 884.1 DAY 9 12 15 4 7 11 3 29 30 1 16 7 MIN. QFE PRESSURE IN HPA 859.6 854.8 856.3 858.1 863.5 862.7 864.0 862.0 858.4 862.8 867.8 858.8 854.8 DAY 6 9 2 18 29 4 6 8 21 27 1 24 MEAN QNH PRESSURE IN HPA 1021.0 1017.9 1016.5 1018.5 1018.9 1018.1 1018.9 1018.2 1016.5 1021.6 1025.8 1019.3 1019.3 MAX. QNH PRESSURE IN HPA 1032.6 1025.2 1023.1 1030.2 1024.7 1025.3 1026.6 1029.3 1025.8 1033.5 1036.8 1028.0 1036.8 DAY 9 12 15 4 7 11 3 29 30 1 16 7 MIN. QNH PRESSURE IN HPA 1008.9 1003.5 1005.2 1007.2 1013.4 1012.5 1014.0 1011.7 1007.6 1012.6 1018.3 1008.0 1003.5 DAY 6 9 2 18 29 4 6 8 21 27 1 24 MEAN QFF PRESSURE IN HPA 1026.6 1022.2 1019.4 1018.0 1014.3 1013.0 1011.4 1011.1 1010.0 1018.9 1026.8 1019.7 1017.6 MAX. QFF PRESSURE IN HPA 1040.2 1033.2 1029.0 1035