STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. 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(MDT) (C) ***** 6.4 12.4 13.8 19.4 25.4 28.0 25.2 20.9 15.5 8.6 6.8 ***** COOLING DEG. DAYS(BASE 21 0C)****** 0.0 0.0 0.0 2.5 133.0 218.0 130.5 16.5 0.0 0.0 0.0 ****** HEATING DEG. DAYS(BASE 18 0C)****** 324.0 173.5 130.0 0.5 0.0 0.0 0.0 0.0 83.0 281.5 348.5 ****** DEWPOINT (MEAN C) ***** -7.1 -4.7 -2.2 -0.3 0.4 6.1 3.1 -1.1 -0.5 -0.8 -4.4 ***** MIXING RATIO (G/KG) ****** 2.86 3.63 4.46 4.86 5.15 7.59 6.12 4.51 4.78 4.66 3.72 ****** VAPOUR PRESSURE (HPA) ****** 3.67 4.65 5.67 6.21 6.54 9.59 7.78 5.77 6.12 5.97 4.76 ****** SATURATION DEF. 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OF WIND OBSERVATION **** 140 155 150 155 150 155 155 150 155 150 155 1670 VECTOR WIND DIRECTION (MEAN) *** 295 274 289 305 316 36 11 352 278 311 270 *** VECTOR WIND MAGNITUDE(KNOTS) **** 1.6 5.0 5.2 5.1 3.8 1.9 3.3 2.5 3.4 1.8 2.8 **** WIND STEADINESES (MEAN %) ***** 47.1 67.6 59.8 67.1 55.1 26.0 42.9 42.4 45.9 35.3 65.1 ***** WIND SPEED (MEAN KNOTS) **** 3.4 7.4 8.7 7.6 6.9 7.3 7.7 5.9 7.4 5.1 4.3 **** FASTEST WIND DIRECTION *** 210 250 220 300 300 200 30 20 240 210 230 *** FASTEST WIND SPEED (KNOTS) *** 24 24 30 24 22 18 24 20 24 20 18 *** DAY ** 6 13 24 25 1 19 20 6 11 13 15 DAYS WITH SKY CLEAR (0-2)/8 **** 20 12 9 17 28 22 24 28 14 15 12 **** DAYS WITH P.CLOUDY (3-6)/8 **** 6 12 13 9 2 9 7 2 13 11 14 **** DAYS WITH CLOUDY (7-8)/8 **** 2 7 8 5 0 0 0 0 4 4 5 **** DAYS WITH VISIBILITY =< 2 KM **** 0 0 0 0 0 0 0 0 0 0 0 **** DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1977 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 ****** 803.2 803.5 799.4 801.6 798.3 796.0 799.9 803.1 804.2 802.9 801.5 ****** MAX. QFE PRESSURE IN HPA ****** 809.3 808.4 803.4 805.2 804.0 799.0 804.2 807.2 808.5 808.0 807.8 ****** DAY ** 15 9 14 14 6 13 23 29 19 28 18 MIN. QFE PRESSURE IN HPA ****** 794.8 797.4 793.3 798.0 795.0 792.5 796.5 799.6 796.4 795.6 795.4 ****** DAY ** 7 30 8 25 18 29 19 15 26 17 23 MEAN QNH PRESSURE IN HPA ****** 1026.7 1027.0 1022.0 1024.7 1020.6 1017.9 1022.6 1026.6 1027.9 1026.3 1024.6 ****** MAX. QNH PRESSURE IN HPA ****** 1034.1 1033.0 1026.9 1029.1 1027.6 1021.5 1027.9 1031.5 1033.1 1032.5 1032.3 ****** DAY ** 15 9 14 14 6 13 23 29 19 28 18 MIN. 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QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 ****** 802.1 802.4 798.4 799.9 796.0 793.8 797.6 801.1 802.9 801.8 801.0 ****** MAX. QFE PRESSURE IN HPA ****** 807.6 807.8 803.5 802.8 801.2 797.1 802.4 804.8 806.7 807.0 807.2 ****** DAY ** 15 9 14 5 6 22 23 29 18 27 18 MIN. 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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. 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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 ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.6 5.9 8.7 14.7 19.2 23.6 24.7 24.4 20.5 15.6 6.8 7.5 14.6 MINIMUN AIR TEMPERATURE (C) -1.6 -0.4 2.5 7.4 11.1 15.0 16.8 15.8 11.4 6.9 0.2 1.7 7.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 3 0 0 0 0 0 4 DAYS WITH MINIMUM TEMP. <=-4 7 3 1 0 0 0 0 0 0 0 6 1 18 DAYS WITH FREEZING MIN.<= 0 23 16 9 0 0 0 0 0 0 0 13 14 75 TEMPERATURE RECORDS LOWEST(C) -7.0 -5.0 -4.0 1.0 4.0 9.0 11.0 13.0 8.0 4.0 -6.0 -5.0 -7.0 DAY 15 13 16 2 4 3 10 14 27 12 24 18 MAXIMUM AIR TEMPERATURE (C) 9.9 13.1 15.5 22.6 27.7 32.5 32.7 33.4 29.9 24.8 13.5 14.5 22.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 7 25 29 31 20 1 0 0 113 DAYS WITH MAXIMUM TEMP. <= 0 1 0 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS HIGHEST(C) 15.0 17.0 22.0 27.0 32.0 38.0 39.0 35.0 33.0 30.0 19.0 18.0 39.0 DAY 1 16 29 10 25 11 2 6 1 1 2 8 DIF. BETWEEN (MAX.-MIN.) (C) 11.5 13.5 13.0 15.2 16.6 17.5 15.9 17.6 18.5 17.9 13.3 12.8 15.3 MEAN DAILY TEMP. (MDT) (C) 4.2 6.4 9.0 15.0 19.4 23.7 24.8 24.6 20.6 15.9 6.8 8.1 14.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 10.5 89.5 118.0 110.5 15.0 0.0 0.0 0.0 343.5 HEATING DEG. DAYS(BASE 18 0C) 428.5 325.0 278.5 90.5 17.5 0.0 0.0 0.0 0.0 69.0 334.5 306.5 1850.0 DEWPOINT (MEAN C) -5.6 -3.9 -5.1 -5.1 -3.9 -1.5 2.1 1.5 -2.2 -0.6 -3.8 -5.6 -2.8 MIXING RATIO (G/KG) 3.37 3.72 3.58 3.56 3.80 4.55 5.78 5.47 4.15 4.67 3.81 3.39 4.15 VAPOUR PRESSURE (HPA) 4.31 4.75 4.58 4.55 4.85 5.78 7.34 6.95 5.31 6.00 4.88 4.34 5.30 SATURATION DEF. (HPA) 4.82 6.34 8.81 15.83 23.39 31.15 30.85 31.33 25.67 16.16 6.52 7.92 17.40 RELATIVE HUMIDITY (MEAN %) 53 48 40 26 20 18 21 20 19 30 47 40 32 RELATIVE HUMIDITY (MAX. %) 74 73 65 44 37 30 33 31 31 47 70 61 50 RELATIVE HUMIDITY (MIN. %) 37 30 24 15 11 11 15 14 13 21 30 24 20 RELATIVE HUMIDITY (MEAN% 03UTC) 71 71 65 44 37 30 33 31 31 45 68 59 49 RELATIVE HUMIDITY (MEAN% 09UTC) 43 37 31 18 15 13 18 16 15 23 35 32 25 RELATIVE HUMIDITY (MEAN% 15UTC) 46 41 31 20 16 13 16 16 15 26 44 35 27 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 74.4 19.3 21.1 4.1 1.0 0.3 0.0 0.0 0.0 0.0 3.7 26.4 150.3 DAYS WITH PRECIPITATION >=10 3 1 0 0 0 0 0 0 0 0 0 1 5 DAYS WITH PRECIPITATION >= 5 5 1 1 0 0 0 0 0 0 0 0 1 8 DAYS WITH PRECIPITATION >= 1 7 2 4 2 1 0 0 0 0 0 2 5 23 DAYS WITH PRECIPITATION 10 5 8 3 3 3 1 0 0 0 9 5 47 GREATEST DAILY PRECIPITATION 31.0 16.0 9.0 3.0 1.0 0.2 0.0 0.0 0.0 0.0 1.0 16.0 31.0 DAY 11 25 7 25 3 17 ** ** ** ** 14 3 DAY WITH THUNDER STORM 0 0 1 1 0 0 0 0 0 0 0 1 3 DAYS WITH SNOW OR SLEET 2 1 2 0 0 0 0 0 0 0 0 0 5 DAYS WITH DUST 1 0 3 5 3 3 3 0 0 0 0 0 18 WIND DIRECTION (PREVAILING) 315 270 315 315 315 360 360 360 360 360 270 225 315 PREVAILING WIND SPEED(KNOTS) 8.5 9.1 11.4 11.9 10.3 6.6 8.7 6.6 7.0 6.6 13.7 11.0 9.5 PREVAILING WIND PERCENT 22.6 14.3 22.6 27.3 17.4 12.0 27.7 13.5 11.3 12.3 14.7 14.2 13.9 CALMS PERCENT OF WIND 54.2 49.3 29.7 25.3 38.1 44.0 31.6 54.8 55.3 58.7 59.3 45.2 45.4 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 299 297 300 293 297 277 17 33 27 321 285 264 307 VECTOR WIND MAGNITUDE(KNOTS) 3.2 2.2 5.2 5.9 4.7 2.6 4.8 1.7 1.3 1.6 2.7 3.1 2.6 WIND STEADINESES (MEAN %) 80.0 55.0 65.8 69.4 71.2 50.0 80.0 54.8 40.6 48.5 64.3 59.6 51.0 WIND SPEED (MEAN KNOTS) 4.0 4.0 7.9 8.5 6.6 5.2 6.0 3.1 3.2 3.3 4.2 5.2 5.1 FASTEST WIND DIRECTION 240 320 310 280 270 270 30 30 180 270 270 280 270 FASTEST WIND SPEED (KNOTS) 20 20 24 28 30 36 20 16 12 20 28 20 36 DAY 21 3 6 26 31 1 7 8 7 22 1 27 DAYS WITH SKY CLEAR (0-2)/8 23 14 10 9 24 25 26 25 30 25 11 16 238 DAYS WITH P.CLOUDY (3-6)/8 3 9 14 9 6 5 5 5 0 6 14 10 86 DAYS WITH CLOUDY (7-8)/8 5 5 7 12 1 0 0 1 0 0 5 5 41 DAYS WITH VISIBILITY =< 2 KM 1 0 1 0 1 1 0 0 0 0 0 0 4 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 801.3 800.6 799.8 800.0 799.4 796.8 797.9 797.9 801.3 804.9 802.7 802.4 800.4 MAX. QFE PRESSURE IN HPA 807.5 807.4 805.1 804.6 803.7 803.0 803.3 801.4 805.6 809.8 810.2 808.6 810.2 DAY-HOUR 3- 6 2- 6 3- 6 5- 6 4- 6 6- 6 9- 6 29- 6 16- 6 25- 6 26- 6 7- 6 MIN. QFE PRESSURE IN HPA 793.4 794.3 794.3 794.2 793.5 790.3 791.5 794.3 794.3 798.9 796.4 796.3 790.3 DAY-HOUR 26- 3 11-15 13-12 19-12 29-15 26-12 2-15 5-15 2-15 1-12 12-12 3-12 MEAN QNH PRESSURE IN HPA 1024.3 1023.4 1022.5 1022.7 1022.0 1018.9 1020.2 1020.1 1024.4 1028.8 1026.0 1025.7 1023.3 MAX. QNH PRESSURE IN HPA 1031.9 1031.8 1029.0 1028.4 1027.3 1026.4 1026.8 1024.5 1029.6 1034.7 1035.2 1033.2 1035.2 DAY-HOUR 3- 6 2- 6 3- 6 5- 6 4- 6 6- 6 9- 6 29- 6 16- 6 25- 6 26- 6 7- 6 MIN. QNH PRESSURE IN HPA 1014.7 1015.8 1015.8 1015.7 1014.8 1010.9 1012.4 1015.8 1015.8 1021.4 1018.4 1018.2 1010.9 DAY-HOUR 26- 3 11-15 13-12 19-12 29-15 26-12 2-15 5-15 2-15 1-12 12-12 3-12 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 801.1 800.7 800.0 800.4 800.1 797.8 798.8 798.7 802.1 805.7 803.0 802.6 800.9 MAX. QFE PRESSURE IN HPA 805.7 806.5 804.1 803.4 803.1 802.4 803.1 800.6 804.6 808.9 808.8 808.0 808.9 DAY 13 2 3 6 14 4 9 29 16 11 26 7 MIN. QFE PRESSURE IN HPA 793.4 796.2 795.2 796.8 794.1 791.8 794.9 796.9 797.4 801.0 798.8 796.8 791.8 DAY 26 25 6 25 30 26 2 6 2 1 12 3 MEAN QNH PRESSURE IN HPA 1024.1 1023.7 1022.8 1023.2 1022.9 1020.0 1021.3 1021.2 1025.3 1029.7 1026.4 1025.9 1023.9 MAX. QNH PRESSURE IN HPA 1029.7 1030.7 1027.8 1026.9 1026.5 1025.7 1026.5 1023.5 1028.4 1033.6 1033.5 1032.5 1033.6 DAY 13 2 3 6 14 4 9 29 16 11 26 7 MIN. QNH PRESSURE IN HPA 1014.7 1018.1 1016.9 1018.8 1015.6 1012.7 1016.5 1019.0 1019.6 1024.0 1021.3 1018.8 1012.7 DAY 26 25 6 25 30 26 2 6 2 1 12 3 MEAN QFF PRESSURE IN HPA 1023.2 1020.6 1017.6 1013.1 1009.0 1002.5 1002.7 1003.0 1010.7 1019.5 1023.6 1021.8 1014.0 MAX. QFF PRESSURE IN HPA 1033.1 1028.5 1026.7 1019.0 1019.7 1012.4 1010.9 1006.3 1015.6 1025.0 1034.9 1030.8 1034.9 DAY 13 2 20 2 4 4 9 16 29 24 26 25 MIN. QFF PRESSURE IN HPA 1010.5 1013.7 1008.3 1005.1 999.5 993.8 993.9 1000.1 1001.9 1009.6 1016.0 1012.0 993.8 DAY 26 25 6 25 30 26 3 7 2 1 1 3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 802.5 801.9 801.1 801.3 800.6 798.1 799.2 799.3 802.8 806.6 804.1 803.8 801.8 MAX. QFE PRESSURE IN HPA 807.5 807.4 805.1 804.6 803.7 803.0 803.3 801.4 805.6 809.8 810.2 808.6 810.2 DAY 3 2 3 5 4 6 9 29 16 25 26 7 MIN. QFE PRESSURE IN HPA 794.4 796.7 796.3 797.0 795.0 792.1 795.1 797.2 798.0 801.9 799.3 798.3 792.1 DAY 26 25 6 19 30 26 2 6 2 1 12 16 MEAN QNH PRESSURE IN HPA 1025.9 1025.0 1024.1 1024.3 1023.5 1020.5 1021.8 1021.9 1026.2 1030.8 1027.7 1027.4 1024.9 MAX. QNH PRESSURE IN HPA 1031.9 1031.8 1029.0 1028.4 1027.3 1026.4 1026.8 1024.5 1029.6 1034.7 1035.2 1033.2 1035.2 DAY 3 2 3 5 4 6 9 29 16 25 26 7 MIN. QNH PRESSURE IN HPA 1015.9 1018.7 1018.2 1019.1 1016.6 1013.1 1016.8 1019.3 1020.3 1025.1 1021.9 1020.7 1013.1 DAY 26 25 6 19 30 26 2 6 2 1 12 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 801.7 801.1 800.2 800.4 799.6 797.2 798.3 798.3 801.7 805.2 802.7 802.6 800.7 MAX. QFE PRESSURE IN HPA 806.5 805.8 803.5 804.2 803.0 802.2 802.2 800.2 804.8 808.3 808.5 807.2 808.5 DAY 3 1 20 5 4 8 9 29 16 25 26 24 MIN. QFE PRESSURE IN HPA 795.6 795.9 795.7 796.3 794.9 791.1 793.5 796.0 796.8 800.8 797.6 797.0 791.1 DAY 26 25 13 19 30 26 2 6 1 1 12 16 MEAN QNH PRESSURE IN HPA 1024.8 1024.1 1023.0 1023.2 1022.3 1019.3 1020.7 1020.7 1024.8 1029.1 1026.0 1025.9 1023.7 MAX. QNH PRESSURE IN HPA 1030.7 1029.8 1027.0 1027.9 1026.4 1025.4 1025.4 1023.0 1028.6 1032.9 1033.1 1031.5 1033.1 DAY 3 1 20 5 4 8 9 29 16 25 26 24 MIN. QNH PRESSURE IN HPA 1017.4 1017.7 1017.5 1018.2 1016.5 1011.9 1014.8 1017.9 1018.8 1023.7 1019.8 1019.1 1011.9 DAY 26 25 13 19 30 26 2 6 1 1 12 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 800.3 799.4 798.7 798.9 798.3 795.7 796.9 796.7 800.2 803.5 801.5 801.3 799.3 MAX. QFE PRESSURE IN HPA 805.0 803.8 801.5 802.8 802.5 801.4 800.8 798.8 803.5 806.8 807.7 806.0 807.7 DAY 3 1 20 5 14 8 8 21 16 10 26 24 MIN. QFE PRESSURE IN HPA 795.6 794.6 794.3 794.2 794.8 790.3 792.0 794.7 795.0 798.9 796.4 796.3 790.3 DAY 26 11 13 19 29 26 2 6 1 1 12 3 MEAN QNH PRESSURE IN HPA 1023.1 1022.0 1021.1 1021.4 1020.7 1017.5 1019.0 1018.7 1023.0 1027.0 1024.6 1024.3 1021.9 MAX. QNH PRESSURE IN HPA 1028.9 1027.4 1024.6 1026.2 1025.8 1024.5 1023.7 1021.3 1027.0 1031.0 1032.2 1030.1 1032.2 DAY 3 1 20 5 14 8 8 21 16 10 26 24 MIN. QNH PRESSURE IN HPA 1017.4 1016.2 1015.8 1015.7 1016.4 1010.9 1013.0 1016.3 1016.6 1021.4 1018.4 1018.2 1010.9 DAY 26 11 13 19 29 26 2 6 1 1 12 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 800.7 799.8 799.1 799.1 798.4 795.3 796.5 796.3 800.0 803.8 802.1 801.9 799.4 MAX. QFE PRESSURE IN HPA 805.0 804.5 801.6 802.8 802.5 800.0 800.5 798.4 803.5 807.2 808.0 806.5 808.0 DAY 3 1 19 5 14 8 8 21 16 10 26 24 MIN. QFE PRESSURE IN HPA 795.6 794.3 795.3 794.9 793.5 790.5 791.5 794.3 794.3 798.9 797.0 796.8 790.5 DAY 26 11 7 19 29 26 2 5 2 1 12 16 MEAN QNH PRESSURE IN HPA 1023.7 1022.5 1021.7 1021.6 1020.8 1017.0 1018.5 1018.2 1022.8 1027.3 1025.3 1025.0 1022.0 MAX. QNH PRESSURE IN HPA 1028.9 1028.2 1024.7 1026.2 1025.8 1022.8 1023.4 1020.8 1027.0 1031.5 1032.5 1030.7 1032.5 DAY 3 1 19 5 14 8 8 21 16 10 26 24 MIN. QNH PRESSURE IN HPA 1017.4 1015.8 1017.0 1016.5 1014.8 1011.2 1012.4 1015.8 1015.8 1021.4 1019.1 1018.8 1011.2 DAY 26 11 7 19 29 26 2 5 2 1 12 16 MEAN QFF PRESSURE IN HPA 1022.7 1019.4 1016.5 1011.4 1006.8 999.3 999.8 999.8 1008.0 1017.0 1022.5 1020.9 1012.0 MAX. QFF PRESSURE IN HPA 1029.2 1026.7 1023.0 1016.4 1017.0 1008.0 1007.0 1003.5 1012.8 1022.3 1033.8 1030.4 1033.8 DAY 13 26 20 2 4 3 9 15 28 25 26 24 MIN. QFF PRESSURE IN HPA 1013.3 1012.8 1009.8 1005.2 1000.1 992.2 989.6 996.6 998.4 1006.9 1014.9 1014.5 989.6 DAY 21 9 6 19 29 30 2 26 2 1 1 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 ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.9 7.3 8.3 16.4 17.6 24.2 26.3 22.8 20.0 16.3 9.0 3.3 14.6 MINIMUN AIR TEMPERATURE (C) -1.5 0.1 1.7 8.2 10.4 15.5 17.8 14.7 10.5 7.9 0.2 -1.8 7.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 3 0 0 0 0 0 3 DAYS WITH MINIMUM TEMP. <=-4 9 2 5 0 0 0 0 0 0 0 7 7 30 DAYS WITH FREEZING MIN.<= 0 22 17 10 2 0 0 0 0 0 0 14 25 90 TEMPERATURE RECORDS LOWEST(C) -11.0 -6.0 -7.0 -1.0 3.0 8.0 15.0 11.0 5.0 3.0 -8.0 -9.0 -11.0 DAY 28 6 5 30 1 1 3 8 27 29 23 23 MAXIMUM AIR TEMPERATURE (C) 10.4 13.8 14.6 23.7 24.5 32.6 34.0 30.2 28.3 24.5 18.2 9.0 22.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 28 31 21 14 0 0 0 95 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 1 1 TEMPERATURE RECORDS HIGHEST(C) 16.0 20.0 20.0 28.0 30.0 35.0 37.0 34.0 32.0 29.0 22.0 16.0 37.0 DAY 3 15 20 5 25 24 9 17 11 8 3 3 DIF. BETWEEN (MAX.-MIN.) (C) 11.9 13.7 12.9 15.5 14.1 17.1 16.2 15.5 17.8 16.6 18.0 10.8 15.0 MEAN DAILY TEMP. (MDT) (C) 4.4 6.9 8.1 15.9 17.4 24.0 25.9 22.5 19.4 16.2 9.2 3.6 14.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.5 96.0 152.0 49.0 8.0 0.0 0.0 0.0 307.5 HEATING DEG. DAYS(BASE 18 0C) 420.5 309.5 305.5 78.0 58.5 0.5 0.0 0.0 15.0 58.5 264.0 446.0 1956.0 DEWPOINT (MEAN C) -5.9 -7.3 -6.0 -6.1 0.4 0.9 1.2 1.0 -2.0 -1.5 -7.7 -4.9 -3.2 MIXING RATIO (G/KG) 3.28 2.99 3.30 3.20 5.26 5.34 5.39 5.30 4.38 4.37 3.05 3.42 4.11 VAPOUR PRESSURE (HPA) 4.20 3.82 4.21 4.10 6.71 6.80 6.86 6.76 5.61 5.61 3.92 4.37 5.25 SATURATION DEF. (HPA) 5.29 7.97 8.52 18.88 17.73 30.57 34.51 26.65 23.59 16.96 10.58 4.42 17.14 RELATIVE HUMIDITY (MEAN %) 49 39 39 22 33 22 18 22 22 28 30 55 32 RELATIVE HUMIDITY (MAX. %) 71 62 63 41 54 39 30 35 40 44 50 73 50 RELATIVE HUMIDITY (MIN. %) 32 23 22 12 22 12 12 15 13 18 17 39 20 RELATIVE HUMIDITY (MEAN% 03UTC) 68 62 59 41 54 39 29 35 37 44 47 69 49 RELATIVE HUMIDITY (MEAN% 09UTC) 40 30 30 16 25 16 14 18 17 21 20 45 24 RELATIVE HUMIDITY (MEAN% 15UTC) 44 30 29 15 29 15 14 17 16 26 30 55 27 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 65.0 7.2 14.5 4.2 53.8 9.1 0.3 1.0 0.2 0.3 3.0 78.2 236.8 DAYS WITH PRECIPITATION >=10 2 0 0 0 3 0 0 0 0 0 0 3 8 DAYS WITH PRECIPITATION >= 5 2 1 2 0 4 1 0 0 0 0 0 5 15 DAYS WITH PRECIPITATION >= 1 6 2 4 1 7 2 0 1 0 0 2 8 33 DAYS WITH PRECIPITATION 9 3 6 2 16 5 3 2 2 3 4 11 66 GREATEST DAILY PRECIPITATION 46.0 5.0 6.0 4.0 19.0 7.0 0.1 1.0 0.1 0.1 1.2 32.0 46.0 DAY 10 17 14 29 8 3 24 29 15 1 30 20 DAY WITH THUNDER STORM 0 0 0 0 5 2 0 1 0 0 0 0 8 DAYS WITH SNOW OR SLEET 3 1 1 1 0 0 0 0 0 0 0 5 11 DAYS WITH DUST 0 3 1 15 9 5 2 1 3 0 2 0 41 WIND DIRECTION (PREVAILING) 315 270 270 270 315 315 45 360 360 360 315 315 315 PREVAILING WIND SPEED(KNOTS) 9.0 15.7 12.4 16.9 11.7 9.3 8.4 8.4 8.9 7.2 8.6 10.5 9.8 PREVAILING WIND PERCENT 16.1 27.1 13.5 25.3 18.7 18.7 12.9 29.0 21.3 9.7 9.3 12.9 13.6 CALMS PERCENT OF WIND 47.1 37.1 36.8 30.0 32.9 35.3 39.4 29.7 38.0 60.0 64.7 57.4 42.4 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 298 293 292 280 310 312 57 11 15 313 329 266 312 VECTOR WIND MAGNITUDE(KNOTS) 2.3 6.6 2.7 5.9 5.1 2.8 1.3 4.6 3.3 1.6 1.1 2.3 2.6 WIND STEADINESES (MEAN %) 46.0 83.5 39.7 66.3 69.9 47.5 28.3 74.2 61.1 44.4 35.5 53.5 44.8 WIND SPEED (MEAN KNOTS) 5.0 7.9 6.8 8.9 7.3 5.9 4.6 6.2 5.4 3.6 3.1 4.3 5.8 FASTEST WIND DIRECTION 170 290 230 270 270 290 350 360 360 260 270 270 290 FASTEST WIND SPEED (KNOTS) 26 28 28 26 24 22 18 16 28 22 20 20 28 DAY 10 26 27 16 22 14 13 2 21 26 30 8 DAYS WITH SKY CLEAR (0-2)/8 14 16 7 11 5 23 19 19 25 20 17 10 186 DAYS WITH P.CLOUDY (3-6)/8 8 10 17 13 14 6 11 11 5 8 13 16 132 DAYS WITH CLOUDY (7-8)/8 9 2 7 6 12 1 1 1 0 3 0 5 47 DAYS WITH VISIBILITY =< 2 KM 2 0 0 1 0 1 0 0 0 0 0 2 6 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 801.1 799.0 798.5 801.8 801.6 799.7 798.3 799.8 803.8 804.9 805.2 800.9 801.2 MAX. QFE PRESSURE IN HPA 808.8 805.9 804.3 807.4 807.1 807.7 802.2 805.2 809.2 810.1 811.2 809.5 811.2 DAY-HOUR 18- 6 13- 9 7- 6 15- 6 20- 6 10- 9 4- 3 30- 6 24-12 21- 6 13- 6 3-12 MIN. QFE PRESSURE IN HPA 792.4 792.5 790.0 794.5 793.8 792.7 792.6 794.8 798.4 799.3 794.7 793.4 790.0 DAY-HOUR 11-12 11- 3 27-12 28-15 16-12 22-15 6-15 14-12 20-15 28-12 30-12 14-12 MEAN QNH PRESSURE IN HPA 1024.1 1021.5 1020.9 1024.9 1024.7 1022.4 1020.7 1022.5 1027.3 1028.8 1029.1 1023.8 1024.2 MAX. QNH PRESSURE IN HPA 1033.5 1030.0 1028.0 1031.8 1031.4 1032.2 1025.4 1029.1 1034.0 1035.1 1036.4 1034.3 1036.4 DAY-HOUR 18- 6 13- 9 7- 6 15- 6 20- 6 10- 9 4- 3 30- 6 24-12 21- 6 13- 6 3-12 MIN. QNH PRESSURE IN HPA 1013.5 1013.6 1010.5 1016.0 1015.2 1013.8 1013.7 1016.4 1020.8 1021.9 1016.3 1014.7 1010.5 DAY-HOUR 11-12 11- 3 27-12 28-15 16-12 22-15 6-15 14-12 20-15 28-12 30-12 14-12 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 801.3 799.2 798.9 802.4 802.0 800.7 799.1 800.4 804.4 805.6 805.9 800.6 801.7 MAX. QFE PRESSURE IN HPA 808.4 803.8 802.8 806.5 806.3 806.7 802.2 804.7 806.5 809.1 810.0 806.5 810.0 DAY 18 13 7 25 20 5 4 30 24 21 13 3 MIN. QFE PRESSURE IN HPA 793.6 792.5 793.0 796.3 796.7 796.0 795.2 796.8 800.2 800.5 796.5 793.7 792.5 DAY 11 11 27 1 8 23 6 6 21 28 29 20 MEAN QNH PRESSURE IN HPA 1024.3 1021.8 1021.4 1025.6 1025.2 1023.6 1021.7 1023.3 1028.2 1029.6 1029.9 1023.5 1024.8 MAX. QNH PRESSURE IN HPA 1033.0 1027.4 1026.2 1030.7 1030.4 1030.9 1025.4 1028.5 1030.7 1033.9 1035.0 1030.7 1035.0 DAY 18 13 7 25 20 5 4 30 24 21 13 3 MIN. QNH PRESSURE IN HPA 1014.9 1013.6 1014.2 1018.2 1018.7 1017.9 1016.9 1018.8 1023.0 1023.4 1018.5 1015.1 1013.6 DAY 11 11 27 1 8 23 6 6 21 28 29 20 MEAN QFF PRESSURE IN HPA 1023.2 1018.3 1016.9 1014.4 1012.7 1005.6 1002.0 1006.3 1014.1 1019.0 1026.1 1023.3 1015.2 MAX. QFF PRESSURE IN HPA 1033.3 1027.7 1029.1 1022.1 1020.7 1015.2 1007.0 1014.8 1018.3 1026.1 1035.4 1034.5 1035.4 DAY 28 1 5 18 11 4 4 30 25 21 21 23 MIN. QFF PRESSURE IN HPA 1011.2 1008.8 1005.0 1009.8 1004.0 998.6 996.9 1001.3 1006.8 1014.5 1013.1 1010.7 996.9 DAY 10 11 27 12 17 28 6 15 21 4 29 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 802.4 800.2 799.9 803.2 802.6 801.0 799.5 800.9 805.1 806.5 806.7 802.0 802.5 MAX. QFE PRESSURE IN HPA 808.8 805.3 804.3 807.4 807.1 807.3 801.8 805.2 807.2 810.1 811.2 807.9 811.2 DAY 18 13 7 15 20 5 20 30 24 21 13 3 MIN. QFE PRESSURE IN HPA 794.7 792.9 792.1 797.5 797.7 796.4 795.2 797.0 800.7 801.7 796.2 794.2 792.1 DAY 11 11 27 1 8 23 6 6 21 28 29 20 MEAN QNH PRESSURE IN HPA 1025.6 1023.0 1022.6 1026.6 1026.0 1024.0 1022.1 1023.9 1028.9 1030.7 1030.9 1025.2 1025.8 MAX. QNH PRESSURE IN HPA 1033.5 1029.2 1028.0 1031.8 1031.4 1031.7 1025.0 1029.1 1031.5 1035.1 1036.4 1032.4 1036.4 DAY 18 13 7 15 20 5 20 30 24 21 13 3 MIN. QNH PRESSURE IN HPA 1016.3 1014.1 1013.1 1019.7 1019.9 1018.4 1016.9 1019.1 1023.6 1024.8 1018.1 1015.7 1013.1 DAY 11 11 27 1 8 23 6 6 21 28 29 20 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 801.3 799.2 798.9 802.0 801.9 800.2 798.7 800.1 804.1 805.1 805.4 801.0 801.5 MAX. QFE PRESSURE IN HPA 808.1 805.9 802.7 806.3 806.3 807.7 801.9 804.3 806.2 808.5 810.0 806.5 810.0 DAY 18 13 16 24 20 10 10 30 23 21 13 4 MIN. QFE PRESSURE IN HPA 792.9 793.4 790.5 797.3 797.1 795.6 793.8 796.3 800.2 800.4 795.6 794.0 790.5 DAY 11 11 27 1 7 22 6 14 21 28 29 20 MEAN QNH PRESSURE IN HPA 1024.3 1021.8 1021.5 1025.2 1025.1 1023.0 1021.2 1022.8 1027.7 1029.0 1029.3 1024.0 1024.6 MAX. QNH PRESSURE IN HPA 1032.6 1030.0 1026.0 1030.4 1030.4 1032.2 1025.1 1028.0 1030.3 1033.1 1035.0 1030.7 1035.0 DAY 18 13 16 24 20 10 10 30 23 21 13 4 MIN. QNH PRESSURE IN HPA 1014.1 1014.7 1011.2 1019.5 1019.2 1017.4 1015.2 1018.2 1023.0 1023.2 1017.4 1015.4 1011.2 DAY 11 11 27 1 7 22 6 14 21 28 29 20 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 800.0 798.0 797.3 800.6 800.6 798.5 797.5 798.9 802.7 803.6 803.8 800.1 800.1 MAX. QFE PRESSURE IN HPA 806.9 804.6 801.4 805.0 805.3 804.4 800.2 803.2 809.2 807.1 808.2 809.5 809.5 DAY 17 13 5 24 20 5 21 29 24 21 13 3 MIN. QFE PRESSURE IN HPA 792.4 792.6 790.0 795.0 793.8 793.8 792.9 794.8 798.4 799.3 794.7 793.4 790.0 DAY 11 11 27 28 16 22 6 14 21 28 30 14 MEAN QNH PRESSURE IN HPA 1022.8 1020.3 1019.5 1023.5 1023.5 1020.9 1019.7 1021.4 1026.0 1027.1 1027.4 1022.8 1022.9 MAX. QNH PRESSURE IN HPA 1031.2 1028.4 1024.5 1028.9 1029.2 1028.1 1023.0 1026.7 1034.0 1031.4 1032.8 1034.3 1034.3 DAY 17 13 5 24 20 5 21 29 24 21 13 3 MIN. QNH PRESSURE IN HPA 1013.5 1013.7 1010.5 1016.6 1015.2 1015.2 1014.1 1016.4 1020.8 1021.9 1016.3 1014.7 1010.5 DAY 11 11 27 28 16 22 6 14 21 28 30 14 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 800.6 798.4 797.5 800.7 801.0 798.0 796.9 798.6 802.5 804.0 804.4 800.6 800.3 MAX. QFE PRESSURE IN HPA 807.4 805.2 802.2 805.4 805.1 804.6 799.6 803.2 804.5 807.5 809.0 804.7 809.0 DAY 17 13 16 24 21 6 20 29 23 15 13 4 MIN. QFE PRESSURE IN HPA 793.0 793.8 790.2 794.5 797.3 792.7 792.6 794.8 798.4 800.2 795.4 793.6 790.2 DAY 11 11 27 28 7 22 6 14 20 28 30 15 MEAN QNH PRESSURE IN HPA 1023.5 1020.8 1019.7 1023.6 1023.9 1020.3 1019.0 1021.0 1025.8 1027.6 1028.1 1023.5 1023.1 MAX. QNH PRESSURE IN HPA 1031.8 1029.1 1025.4 1029.3 1029.0 1028.4 1022.3 1026.7 1028.2 1031.9 1033.7 1028.5 1033.7 DAY 17 13 16 24 21 6 20 29 23 15 13 4 MIN. QNH PRESSURE IN HPA 1014.2 1015.2 1010.8 1016.0 1019.5 1013.8 1013.7 1016.4 1020.8 1023.0 1017.1 1014.9 1010.8 DAY 11 11 27 28 7 22 6 14 20 28 30 15 MEAN QFF PRESSURE IN HPA 1022.4 1017.2 1015.1 1012.4 1011.3 1002.2 999.2 1004.0 1011.7 1017.0 1024.2 1023.3 1013.3 MAX. QFF PRESSURE IN HPA 1031.5 1027.2 1027.6 1020.1 1019.0 1012.0 1002.8 1012.0 1015.8 1023.9 1034.0 1032.5 1034.0 DAY 27 13 5 29 10 6 20 30 29 21 20 23 MIN. QFF PRESSURE IN HPA 1011.9 1011.5 1003.1 1007.3 1004.2 994.9 994.3 998.4 1004.7 1011.6 1011.7 1010.5 994.3 DAY 10 21 27 11 17 22 6 15 20 3 30 15 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1980 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.6 4.9 8.9 16.3 20.3 25.8 25.7 26.0 21.5 16.0 10.4 5.5 15.3 MINIMUN AIR TEMPERATURE (C) -3.2 -1.1 2.3 8.8 11.4 16.3 16.2 16.5 11.6 7.4 2.8 -1.1 7.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 17 5 4 0 0 0 0 0 0 0 1 5 32 DAYS WITH FREEZING MIN.<= 0 26 20 10 0 0 0 0 0 0 1 5 23 85 TEMPERATURE RECORDS LOWEST(C) -8.0 -9.0 -8.0 1.0 7.0 14.0 12.0 14.0 8.0 -2.0 -4.0 -6.0 -9.0 DAY 18 2 5 18 7 2 3 27 24 31 27 13 MAXIMUM AIR TEMPERATURE (C) 9.0 10.9 15.2 23.1 27.7 33.3 32.7 33.5 29.8 24.5 18.8 13.1 22.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 10 29 31 31 19 6 0 0 126 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 13.0 14.0 23.0 27.0 32.0 36.0 35.0 36.0 33.0 31.0 23.0 22.0 36.0 DAY 3 20 31 23 27 7 30 8 7 5 13 6 DIF. BETWEEN (MAX.-MIN.) (C) 12.2 12.0 12.9 14.3 16.3 17.0 16.5 17.0 18.2 17.1 16.0 14.2 15.3 MEAN DAILY TEMP. (MDT) (C) 2.9 4.9 8.7 15.9 19.5 24.8 24.5 25.0 20.7 15.9 10.8 6.0 15.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 10.0 114.0 107.5 124.5 14.5 1.0 0.0 0.0 371.5 HEATING DEG. DAYS(BASE 18 0C) 468.0 380.0 287.0 65.5 14.0 0.0 0.0 0.0 0.0 86.5 215.5 372.0 1888.5 DEWPOINT (MEAN C) -8.4 -6.2 -4.3 -1.0 1.0 3.8 2.4 0.7 -1.1 -0.5 -1.8 -6.4 -1.8 MIXING RATIO (G/KG) 2.66 3.17 3.93 4.70 5.31 6.46 5.86 5.17 4.50 4.68 4.31 3.14 4.49 VAPOUR PRESSURE (HPA) 3.40 4.04 5.02 6.00 6.77 8.21 7.45 6.57 5.76 6.00 5.53 4.01 5.73 SATURATION DEF. (HPA) 5.08 5.94 8.50 15.50 21.51 30.78 30.87 32.72 24.58 16.11 9.64 6.64 17.32 RELATIVE HUMIDITY (MEAN %) 44 44 42 32 28 23 21 19 22 32 40 44 33 RELATIVE HUMIDITY (MAX. %) 65 65 65 52 50 37 34 30 36 49 61 60 50 RELATIVE HUMIDITY (MIN. %) 28 29 26 20 17 16 15 12 14 20 25 29 21 RELATIVE HUMIDITY (MEAN% 03UTC) 64 61 62 51 49 35 32 30 36 49 60 57 49 RELATIVE HUMIDITY (MEAN% 09UTC) 32 35 31 24 21 20 18 15 16 24 30 35 25 RELATIVE HUMIDITY (MEAN% 15UTC) 41 41 36 25 21 17 18 15 18 28 39 46 29 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 40.4 24.6 35.0 32.6 18.0 0.1 0.0 0.0 0.0 0.4 0.4 19.2 170.7 DAYS WITH PRECIPITATION >=10 1 1 1 2 0 0 0 0 0 0 0 1 6 DAYS WITH PRECIPITATION >= 5 2 1 3 2 1 0 0 0 0 0 0 2 11 DAYS WITH PRECIPITATION >= 1 2 6 9 6 7 0 0 0 0 0 0 4 34 DAYS WITH PRECIPITATION 4 9 11 9 9 1 0 0 0 2 4 4 53 GREATEST DAILY PRECIPITATION 33.0 15.0 11.0 16.0 5.2 0.1 0.0 0.0 0.0 0.3 0.3 11.0 33.0 DAY 24 25 19 16 22 4 ** ** ** 30 8 17 DAY WITH THUNDER STORM 0 0 2 3 6 0 0 0 0 0 0 0 11 DAYS WITH SNOW OR SLEET 1 1 1 0 0 0 0 0 0 0 0 2 5 DAYS WITH DUST 0 7 8 12 10 2 0 1 2 2 0 0 44 WIND DIRECTION (PREVAILING) 315 270 270 270 270 360 360 360 360 360 270 315 360 PREVAILING WIND SPEED(KNOTS) 9.0 14.2 13.7 14.5 10.1 8.3 8.1 7.4 6.0 6.1 8.1 3.3 7.3 PREVAILING WIND PERCENT 20.6 19.3 20.0 18.7 18.1 23.3 20.6 23.2 19.3 12.3 15.3 16.8 14.0 CALMS PERCENT OF WIND 40.0 37.9 41.3 37.3 40.6 40.0 33.5 31.0 39.3 58.1 52.0 45.2 41.4 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 299 264 281 275 295 338 18 12 352 307 288 287 299 VECTOR WIND MAGNITUDE(KNOTS) 4.0 5.4 4.5 4.8 3.4 2.4 3.0 1.5 1.2 2.4 2.0 1.3 2.5 WIND STEADINESES (MEAN %) 71.4 65.9 66.2 63.2 63.0 44.4 58.8 26.3 29.3 66.7 62.5 50.0 47.2 WIND SPEED (MEAN KNOTS) 5.6 8.2 6.8 7.6 5.4 5.4 5.1 5.7 4.1 3.6 3.2 2.6 5.3 FASTEST WIND DIRECTION 360 240 270 270 270 210 300 90 290 310 220 180 240 FASTEST WIND SPEED (KNOTS) 24 30 30 30 30 18 18 18 18 18 16 18 30 DAY 17 18 19 4 24 10 20 25 21 21 9 7 DAYS WITH SKY CLEAR (0-2)/8 19 14 8 10 18 27 26 29 29 25 22 19 246 DAYS WITH P.CLOUDY (3-6)/8 11 10 13 13 9 3 5 2 1 6 7 9 89 DAYS WITH CLOUDY (7-8)/8 1 5 10 7 4 0 0 0 0 0 1 3 31 DAYS WITH VISIBILITY =< 2 KM 1 2 3 3 0 0 0 0 0 0 0 0 9 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 799.5 798.4 799.8 801.3 800.9 798.3 798.6 798.4 801.8 802.7 803.5 801.2 800.4 MAX. QFE PRESSURE IN HPA 808.4 804.4 806.3 809.2 805.5 804.3 803.5 805.0 807.5 808.2 809.1 808.5 809.2 DAY-HOUR 3- 3 22- 6 31- 6 21- 6 26- 6 2- 6 18- 6 31- 6 5- 6 7- 6 3- 6 4- 6 MIN. QFE PRESSURE IN HPA 791.5 790.3 788.4 796.2 793.5 792.0 792.2 793.0 797.0 797.5 798.4 792.3 788.4 DAY-HOUR 24- 3 25- 3 2-12 11-15 18-12 7- 9 23- 3 7-15 14-12 11-12 15-12 11-15 MEAN QNH PRESSURE IN HPA 1022.1 1020.8 1022.5 1024.3 1023.8 1020.6 1021.1 1020.8 1024.9 1026.0 1027.0 1024.2 1023.2 MAX. QNH PRESSURE IN HPA 1033.0 1028.1 1030.4 1034.0 1029.5 1028.0 1027.0 1028.9 1031.9 1032.8 1033.9 1033.1 1034.0 DAY-HOUR 3- 3 22- 6 31- 6 21- 6 26- 6 2- 6 18- 6 31- 6 5- 6 7- 6 3- 6 4- 6 MIN. QNH PRESSURE IN HPA 1012.4 1010.9 1008.6 1018.1 1014.8 1013.0 1013.2 1014.2 1019.1 1019.7 1020.8 1013.4 1008.6 DAY-HOUR 24- 3 25- 3 2-12 11-15 18-12 7- 9 23- 3 7-15 14-12 11-12 15-12 11-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 799.4 798.2 800.1 801.7 801.6 799.3 799.2 799.2 802.6 803.5 804.1 801.6 800.9 MAX. QFE PRESSURE IN HPA 808.4 803.4 806.0 808.8 804.5 803.9 803.2 804.2 806.5 807.5 808.4 807.0 808.8 DAY 3 22 26 21 26 2 18 31 29 7 12 4 MIN. QFE PRESSURE IN HPA 791.5 790.3 789.9 798.1 799.2 796.0 792.2 796.0 798.8 800.4 799.5 794.8 789.9 DAY 24 25 2 16 13 17 23 8 14 28 25 11 MEAN QNH PRESSURE IN HPA 1022.0 1020.6 1022.9 1024.8 1024.7 1021.9 1021.8 1021.8 1025.9 1027.0 1027.7 1024.6 1023.8 MAX. QNH PRESSURE IN HPA 1033.0 1026.9 1030.1 1033.5 1028.2 1027.5 1026.7 1027.9 1030.7 1031.9 1033.0 1031.3 1033.5 DAY 3 22 26 21 26 2 18 31 29 7 12 4 MIN. QNH PRESSURE IN HPA 1012.4 1010.9 1010.4 1020.4 1021.8 1017.9 1013.2 1017.9 1021.3 1023.2 1022.1 1016.4 1010.4 DAY 24 25 2 16 13 17 23 8 14 28 25 11 MEAN QFF PRESSURE IN HPA 1022.4 1018.9 1017.8 1013.3 1010.5 1003.1 1003.5 1003.2 1011.5 1016.9 1022.2 1023.4 1013.9 MAX. QFF PRESSURE IN HPA 1034.4 1029.8 1030.4 1023.0 1016.8 1011.5 1008.4 1012.1 1018.8 1028.1 1030.5 1033.7 1034.4 DAY 3 3 5 21 1 2 18 31 29 31 27 21 MIN. QFF PRESSURE IN HPA 1009.5 1005.6 1005.1 1006.7 1006.1 998.3 994.9 996.9 1005.8 1012.9 1015.3 1014.0 994.9 DAY 24 25 19 26 29 22 23 10 14 12 10 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 800.6 799.6 801.0 802.4 802.1 799.6 799.8 799.7 803.4 804.1 805.0 802.7 801.7 MAX. QFE PRESSURE IN HPA 805.2 804.4 806.3 809.2 805.5 804.3 803.5 805.0 807.5 808.2 809.1 808.5 809.2 DAY 9 22 31 21 26 2 18 31 5 7 3 4 MIN. QFE PRESSURE IN HPA 793.2 791.4 789.5 798.6 799.6 796.5 797.1 796.5 799.3 800.8 800.7 795.2 789.5 DAY 24 25 2 16 17 27 3 10 14 11 25 11 MEAN QNH PRESSURE IN HPA 1023.5 1022.3 1023.9 1025.7 1025.3 1022.2 1022.5 1022.4 1026.9 1027.8 1028.8 1026.0 1024.8 MAX. QNH PRESSURE IN HPA 1029.1 1028.1 1030.4 1034.0 1029.5 1028.0 1027.0 1028.9 1031.9 1032.8 1033.9 1033.1 1034.0 DAY 9 22 31 21 26 2 18 31 5 7 3 4 MIN. QNH PRESSURE IN HPA 1014.5 1012.3 1009.9 1021.0 1022.3 1018.5 1019.2 1018.5 1021.9 1023.7 1023.6 1016.9 1009.9 DAY 24 25 2 16 17 27 3 10 14 11 25 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 799.8 798.9 800.1 801.6 801.2 798.4 799.1 798.8 802.1 802.8 803.6 801.3 800.6 MAX. QFE PRESSURE IN HPA 804.3 803.7 805.5 808.6 804.6 803.6 802.6 804.2 806.0 806.4 807.7 806.6 808.6 DAY 9 1 31 1 26 2 18 31 29 7 12 4 MIN. QFE PRESSURE IN HPA 792.9 791.6 788.8 797.7 798.4 792.0 796.6 795.0 798.5 799.2 799.4 794.2 788.8 DAY 24 25 2 26 17 7 3 7 14 29 20 11 MEAN QNH PRESSURE IN HPA 1022.5 1021.4 1022.9 1024.7 1024.2 1020.8 1021.6 1021.3 1025.4 1026.2 1027.1 1024.3 1023.5 MAX. QNH PRESSURE IN HPA 1028.0 1027.3 1029.5 1033.2 1028.4 1027.1 1025.9 1027.9 1030.1 1030.6 1032.2 1030.8 1033.2 DAY 9 1 31 1 26 2 18 31 29 7 12 4 MIN. QNH PRESSURE IN HPA 1014.1 1012.5 1009.1 1019.9 1020.8 1013.0 1018.6 1016.6 1020.9 1021.8 1022.0 1015.7 1009.1 DAY 24 25 2 26 17 7 3 7 14 29 20 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 798.5 797.5 798.8 800.3 799.8 797.1 797.8 797.4 800.4 801.2 802.1 800.1 799.3 MAX. QFE PRESSURE IN HPA 803.3 802.4 804.0 806.8 803.0 802.0 801.3 802.5 803.9 804.3 806.1 805.2 806.8 DAY 9 1 31 21 26 2 18 31 28 7 2 4 MIN. QFE PRESSURE IN HPA 792.9 790.5 788.4 796.6 793.5 793.2 795.0 793.4 797.0 797.5 798.4 793.7 788.4 DAY 24 25 2 25 18 27 31 7 14 11 15 18 MEAN QNH PRESSURE IN HPA 1020.9 1019.7 1021.3 1023.2 1022.5 1019.2 1020.0 1019.6 1023.3 1024.3 1025.3 1022.9 1021.8 MAX. QNH PRESSURE IN HPA 1026.8 1025.7 1027.6 1031.0 1026.4 1025.2 1024.3 1025.8 1027.5 1028.0 1030.2 1029.1 1031.0 DAY 9 1 31 21 26 2 18 31 28 7 2 4 MIN. QNH PRESSURE IN HPA 1014.1 1011.2 1008.6 1018.6 1014.8 1014.5 1016.6 1014.7 1019.1 1019.7 1020.8 1015.1 1008.6 DAY 24 25 2 25 18 27 31 7 14 11 15 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 ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 799.0 797.9 799.2 800.3 799.8 797.1 797.3 797.0 800.4 801.7 802.8 800.4 799.4 MAX. QFE PRESSURE IN HPA 804.2 802.4 804.0 806.6 802.8 801.5 800.8 801.9 804.4 804.4 807.2 804.9 807.2 DAY 9 1 22 21 26 2 17 31 28 23 12 20 MIN. QFE PRESSURE IN HPA 794.3 791.2 789.3 796.2 796.6 792.9 794.1 793.0 797.0 797.8 798.4 792.3 789.3 DAY 24 25 2 11 31 27 31 7 14 11 20 11 MEAN QNH PRESSURE IN HPA 1021.5 1020.2 1021.7 1023.1 1022.5 1019.2 1019.5 1019.1 1023.2 1024.8 1026.1 1023.3 1022.0 MAX. QNH PRESSURE IN HPA 1027.9 1025.7 1027.6 1030.8 1026.2 1024.6 1023.7 1025.1 1028.1 1028.1 1031.5 1028.7 1031.5 DAY 9 1 22 21 26 2 17 31 28 23 12 20 MIN. QNH PRESSURE IN HPA 1015.8 1012.0 1009.7 1018.1 1018.6 1014.1 1015.6 1014.2 1019.1 1020.1 1020.8 1013.4 1009.7 DAY 24 25 2 11 31 27 31 7 14 11 20 11 MEAN QFF PRESSURE IN HPA 1021.8 1018.3 1016.4 1011.6 1008.0 1000.2 1000.9 1000.4 1008.7 1014.8 1020.4 1021.8 1012.0 MAX. QFF PRESSURE IN HPA 1029.5 1030.2 1027.2 1020.6 1014.0 1007.8 1005.4 1008.8 1016.0 1023.5 1029.3 1030.8 1030.8 DAY 9 1 4 20 1 2 17 31 28 30 26 20 MIN. QFF PRESSURE IN HPA 1011.9 1006.4 1005.4 1004.7 1001.6 995.6 996.1 994.3 1003.4 1010.2 1014.3 1012.0 994.3 DAY 23 25 2 25 31 27 31 8 9 11 16 18 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 ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1981 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.6 7.3 12.4 16.7 21.9 25.6 27.7 27.0 21.6 15.7 12.0 8.5 16.8 MINIMUN AIR TEMPERATURE (C) -1.3 0.5 4.3 7.8 11.6 15.0 17.9 16.4 10.5 6.1 2.7 -0.3 7.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 3 0 0 0 0 0 3 DAYS WITH MINIMUM TEMP. <=-4 12 3 0 0 0 0 0 0 0 0 3 1 19 DAYS WITH FREEZING MIN.<= 0 22 17 4 2 0 0 0 0 0 0 5 19 69 TEMPERATURE RECORDS LOWEST(C) -7.0 -7.0 -3.0 -1.0 4.0 11.0 13.0 13.0 5.0 2.0 -6.0 -4.0 -7.0 DAY 15 4 5 3 3 6 31 1 25 24 24 2 MAXIMUM AIR TEMPERATURE (C) 11.5 12.6 18.1 22.5 27.7 31.5 33.5 33.4 28.3 22.4 18.7 15.2 22.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 11 25 27 29 13 0 0 0 105 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 15.0 19.0 23.0 28.0 33.0 36.0 37.0 36.0 33.0 26.0 23.0 19.0 37.0 DAY 10 8 20 22 23 30 1 12 18 1 12 6 DIF. BETWEEN (MAX.-MIN.) (C) 12.8 12.1 13.8 14.7 16.1 16.5 15.6 17.0 17.8 16.3 16.0 15.5 15.3 MEAN DAILY TEMP. (MDT) (C) 5.1 6.5 11.2 15.1 19.6 23.2 25.7 24.9 19.4 14.2 10.7 7.5 15.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 21.0 72.0 146.0 121.0 14.0 0.0 0.0 0.0 374.0 HEATING DEG. DAYS(BASE 18 0C) 400.0 321.0 210.5 94.5 23.0 0.0 0.0 0.0 22.0 117.0 219.5 326.5 1734.0 DEWPOINT (MEAN C) -4.9 -4.8 -2.6 -3.4 -0.1 2.9 5.5 4.6 -1.4 -1.5 -4.6 -6.2 -1.4 MIXING RATIO (G/KG) 3.53 3.57 4.09 4.12 4.89 6.12 7.27 6.81 4.48 4.39 3.58 3.08 4.66 VAPOUR PRESSURE (HPA) 4.51 4.55 5.21 5.26 6.24 7.77 9.21 8.64 5.74 5.64 4.59 3.95 5.94 SATURATION DEF. (HPA) 5.08 6.20 9.98 15.00 21.74 26.68 29.63 28.87 22.02 13.38 10.45 7.83 16.40 RELATIVE HUMIDITY (MEAN %) 50 46 39 30 26 25 26 25 23 34 34 38 33 RELATIVE HUMIDITY (MAX. %) 69 66 63 49 45 39 39 37 36 53 53 57 51 RELATIVE HUMIDITY (MIN. %) 33 30 24 17 17 17 19 18 16 21 21 24 21 RELATIVE HUMIDITY (MEAN% 03UTC) 67 64 62 44 45 39 39 37 36 52 52 57 50 RELATIVE HUMIDITY (MEAN% 09UTC) 40 38 28 23 21 21 23 21 19 25 26 30 26 RELATIVE HUMIDITY (MEAN% 15UTC) 51 43 34 28 20 19 21 21 20 32 32 35 30 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 25.1 16.8 6.6 16.7 17.4 0.0 0.0 0.0 0.0 1.4 1.5 1.0 86.5 DAYS WITH PRECIPITATION >=10 0 0 0 0 1 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 2 2 0 1 1 0 0 0 0 0 0 0 6 DAYS WITH PRECIPITATION >= 1 5 4 3 5 2 0 0 0 0 1 1 1 22 DAYS WITH PRECIPITATION 7 6 7 8 4 1 0 0 0 3 4 1 41 GREATEST DAILY PRECIPITATION 9.0 6.0 4.0 8.4 15.0 0.0 0.0 0.0 0.0 1.0 1.2 1.0 15.0 DAY 12 11 28 17 1 ** ** ** ** 13 5 31 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 0 2 0 0 0 0 0 0 0 0 0 1 3 DAYS WITH DUST 0 2 0 2 1 3 0 0 1 2 0 0 11 WIND DIRECTION (PREVAILING) 270 270 270 270 315 315 360 360 360 360 360 315 360 PREVAILING WIND SPEED(KNOTS) 8.0 9.8 9.4 11.7 7.2 7.1 6.5 7.2 6.3 4.4 4.8 5.9 5.3 PREVAILING WIND PERCENT 18.7 23.6 27.1 34.0 26.5 24.7 29.0 26.5 30.7 21.9 19.3 27.7 19.7 CALMS PERCENT OF WIND 29.0 15.0 19.4 6.0 13.5 14.0 10.3 31.0 20.0 19.4 19.3 27.1 18.7 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 269 283 286 275 287 314 14 14 6 337 293 316 307 VECTOR WIND MAGNITUDE(KNOTS) 2.1 3.4 4.2 6.1 4.4 3.2 3.6 2.1 3.1 2.0 2.7 2.6 2.6 WIND STEADINESES (MEAN %) 52.5 61.8 67.7 72.6 67.7 51.6 64.3 50.0 66.0 46.5 54.0 66.7 48.1 WIND SPEED (MEAN KNOTS) 4.0 5.5 6.2 8.4 6.5 6.2 5.6 4.2 4.7 4.3 5.0 3.9 5.4 FASTEST WIND DIRECTION 250 230 210 250 260 270 30 10 20 270 240 300 260 FASTEST WIND SPEED (KNOTS) 22 24 19 28 32 24 16 16 16 30 18 18 32 DAY 11 25 1 12 16 5 22 30 4 16 22 26 DAYS WITH SKY CLEAR (0-2)/8 19 15 15 14 24 30 31 28 29 25 23 21 274 DAYS WITH P.CLOUDY (3-6)/8 9 9 15 14 5 0 0 3 1 5 7 10 78 DAYS WITH CLOUDY (7-8)/8 3 4 1 2 2 0 0 0 0 1 0 0 13 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 0 0 0 0 0 0 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 800.4 798.9 798.7 799.5 800.3 798.2 797.0 798.6 803.3 804.5 803.0 802.1 800.4 MAX. QFE PRESSURE IN HPA 808.2 805.0 809.5 806.5 805.8 803.4 803.3 803.3 808.1 809.8 808.2 809.0 809.8 DAY-HOUR 9- 6 7- 6 5-15 20- 6 21- 6 11- 6 30- 6 3- 6 27- 6 27- 6 15- 6 12- 6 MIN. QFE PRESSURE IN HPA 790.6 792.2 792.4 790.1 793.9 792.7 791.5 793.4 797.8 799.1 798.9 796.3 790.1 DAY-HOUR 3- 9 15- 9 13-12 30-12 1- 3 26-15 2-15 12-15 22-15 17-12 10-12 31-12 MEAN QNH PRESSURE IN HPA 1023.2 1021.4 1021.2 1022.1 1023.1 1020.5 1019.1 1021.0 1026.8 1028.2 1026.4 1025.3 1023.2 MAX. QNH PRESSURE IN HPA 1032.8 1028.9 1034.3 1030.7 1029.8 1026.9 1026.8 1026.8 1032.6 1034.7 1032.8 1033.7 1034.7 DAY-HOUR 9- 6 7- 6 5-15 20- 6 21- 6 11- 6 30- 6 3- 6 27- 6 27- 6 15- 6 12- 6 MIN. QNH PRESSURE IN HPA 1011.3 1013.2 1013.5 1010.7 1015.3 1013.8 1012.4 1014.7 1020.1 1021.7 1021.4 1018.2 1010.7 DAY-HOUR 3- 9 15- 9 13-12 30-12 1- 3 26-15 2-15 12-15 22-15 17-12 10-12 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 800.5 799.0 799.1 799.7 800.7 799.1 797.7 799.4 803.9 804.9 803.2 802.6 800.8 MAX. QFE PRESSURE IN HPA 807.9 803.5 805.3 806.3 805.3 803.0 802.6 802.6 807.0 809.2 807.6 807.3 809.2 DAY 9 7 6 20 21 11 30 3 27 26 16 13 MIN. QFE PRESSURE IN HPA 791.5 793.5 793.8 791.1 793.9 795.7 793.5 795.7 801.1 800.7 799.0 796.4 791.1 DAY 3 12 28 2 1 22 2 14 23 17 23 31 MEAN QNH PRESSURE IN HPA 1023.3 1021.5 1021.7 1022.4 1023.7 1021.6 1020.0 1022.0 1027.5 1028.8 1026.7 1025.9 1023.7 MAX. QNH PRESSURE IN HPA 1032.4 1027.0 1029.2 1030.4 1029.2 1026.4 1025.9 1025.9 1031.3 1034.0 1032.0 1031.7 1034.0 DAY 9 7 6 20 21 11 30 3 27 26 16 13 MIN. QNH PRESSURE IN HPA 1012.4 1014.8 1015.2 1011.9 1015.3 1017.5 1014.8 1017.5 1024.1 1023.6 1021.5 1018.4 1011.9 DAY 3 12 28 2 1 22 2 14 23 17 23 31 MEAN QFF PRESSURE IN HPA 1022.6 1018.8 1015.1 1012.4 1009.7 1004.5 1000.9 1004.2 1014.7 1020.5 1021.5 1023.5 1014.0 MAX. QFF PRESSURE IN HPA 1035.2 1028.8 1028.0 1021.1 1017.4 1011.5 1009.9 1011.0 1022.2 1028.8 1030.9 1031.3 1035.2 DAY 9 4 5 19 3 11 27 4 27 25 26 13 MIN. QFF PRESSURE IN HPA 1009.9 1009.4 1007.4 1002.2 1003.6 998.5 994.2 997.9 1010.0 1015.2 1014.1 1013.6 994.2 DAY 3 11 28 29 17 22 20 13 23 9 5 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 801.7 800.2 799.8 800.4 801.4 799.6 798.3 799.9 804.8 805.6 804.3 803.7 801.6 MAX. QFE PRESSURE IN HPA 808.2 805.0 806.6 806.5 805.8 803.4 803.3 803.3 808.1 809.8 808.2 809.0 809.8 DAY 9 7 5 20 21 11 30 3 27 27 15 12 MIN. QFE PRESSURE IN HPA 791.4 795.7 794.2 793.2 794.9 796.0 794.3 796.2 802.4 801.2 801.1 797.4 791.4 DAY 3 12 12 29 1 26 2 13 29 17 22 31 MEAN QNH PRESSURE IN HPA 1024.8 1023.0 1022.6 1023.3 1024.5 1022.2 1020.7 1022.6 1028.6 1029.6 1028.0 1027.3 1024.8 MAX. QNH PRESSURE IN HPA 1032.8 1028.9 1030.8 1030.7 1029.8 1026.9 1026.8 1026.8 1032.6 1034.7 1032.8 1033.7 1034.7 DAY 9 7 5 20 21 11 30 3 27 27 15 12 MIN. QNH PRESSURE IN HPA 1012.3 1017.5 1015.7 1014.5 1016.5 1017.9 1015.8 1018.1 1025.7 1024.2 1024.1 1019.6 1012.3 DAY 3 12 12 29 1 26 2 13 29 17 22 31 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 800.4 799.2 799.0 799.7 800.6 798.6 797.5 798.9 803.7 804.7 803.0 802.1 800.6 MAX. QFE PRESSURE IN HPA 805.9 803.7 806.9 805.5 805.3 802.5 802.1 802.9 807.6 809.2 806.8 807.2 809.2 DAY 9 7 5 19 21 11 30 3 27 26 15 12 MIN. QFE PRESSURE IN HPA 790.6 792.2 793.7 791.4 795.4 795.0 793.5 795.1 801.3 800.0 800.3 796.9 790.6 DAY 3 15 13 1 16 26 2 14 22 17 10 31 MEAN QNH PRESSURE IN HPA 1023.3 1021.8 1021.6 1022.4 1023.5 1021.1 1019.6 1021.4 1027.3 1028.4 1026.5 1025.3 1023.5 MAX. QNH PRESSURE IN HPA 1030.0 1027.3 1031.2 1029.5 1029.2 1025.8 1025.3 1026.3 1032.0 1034.0 1031.0 1031.5 1034.0 DAY 9 7 5 19 21 11 30 3 27 26 15 12 MIN. QNH PRESSURE IN HPA 1011.3 1013.2 1015.1 1012.3 1017.1 1016.6 1014.8 1016.8 1024.3 1022.8 1023.1 1019.0 1011.3 DAY 3 15 13 1 16 26 2 14 22 17 10 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 799.4 797.9 797.6 798.6 799.4 797.0 796.1 797.5 802.1 803.4 801.9 800.8 799.3 MAX. QFE PRESSURE IN HPA 804.9 802.0 804.1 804.7 804.3 800.7 800.7 801.8 805.6 807.8 805.9 805.7 807.8 DAY 9 7 5 20 21 11 30 3 27 26 15 12 MIN. QFE PRESSURE IN HPA 790.9 793.8 792.4 790.1 794.4 793.0 792.1 793.6 798.6 799.1 798.9 796.3 790.1 DAY 3 11 13 30 16 26 2 14 22 17 10 31 MEAN QNH PRESSURE IN HPA 1022.0 1020.2 1019.8 1021.0 1022.0 1019.1 1018.0 1019.7 1025.4 1026.9 1025.0 1023.8 1021.9 MAX. QNH PRESSURE IN HPA 1028.7 1025.2 1027.8 1028.5 1028.0 1023.6 1023.6 1025.0 1029.6 1032.3 1030.0 1029.7 1032.3 DAY 9 7 5 20 21 11 30 3 27 26 15 12 MIN. QNH PRESSURE IN HPA 1011.6 1015.2 1013.5 1010.7 1015.9 1014.2 1013.1 1014.9 1021.0 1021.7 1021.4 1018.2 1010.7 DAY 3 11 13 30 16 26 2 14 22 17 10 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 ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 800.0 798.4 798.1 799.0 799.4 796.8 795.7 797.3 802.0 803.8 802.5 801.5 799.5 MAX. QFE PRESSURE IN HPA 805.9 802.6 809.5 804.9 803.7 800.1 800.6 801.1 805.4 808.0 806.9 806.2 809.5 DAY 9 7 5 19 21 2 29 3 27 26 15 1 MIN. QFE PRESSURE IN HPA 792.3 793.5 793.2 790.3 795.0 792.7 791.5 793.4 797.8 799.9 799.5 797.4 790.3 DAY 3 11 12 30 16 26 2 12 22 17 22 31 MEAN QNH PRESSURE IN HPA 1022.8 1020.7 1020.5 1021.5 1022.0 1018.8 1017.5 1019.4 1025.2 1027.3 1025.8 1024.5 1022.2 MAX. QNH PRESSURE IN HPA 1030.0 1025.9 1034.3 1028.7 1027.3 1022.9 1023.5 1024.1 1029.3 1032.5 1031.2 1030.3 1034.3 DAY 9 7 5 19 21 2 29 3 27 26 15 1 MIN. QNH PRESSURE IN HPA 1013.4 1014.8 1014.5 1010.9 1016.6 1013.8 1012.4 1014.7 1020.1 1022.6 1022.1 1019.6 1010.9 DAY 3 11 12 30 16 26 2 12 22 17 22 31 MEAN QFF PRESSURE IN HPA 1021.9 1018.0 1013.8 1011.5 1007.9 1001.5 998.3 1001.4 1012.3 1019.0 1020.7 1022.1 1012.4 MAX. QFF PRESSURE IN HPA 1033.4 1026.4 1033.3 1020.3 1017.6 1007.1 1007.0 1008.9 1020.0 1026.5 1029.4 1030.1 1033.4 DAY 9 4 5 19 2 11 27 3 27 26 24 1 MIN. QFF PRESSURE IN HPA 1010.5 1009.2 1008.1 1000.7 1002.9 995.0 991.8 994.8 1005.8 1013.3 1015.3 1016.2 991.8 DAY 3 11 23 29 16 26 2 12 22 10 22 26 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 ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1982 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.9 3.0 9.1 17.6 22.3 27.5 27.5 28.3 23.0 15.2 8.3 3.3 15.8 MINIMUN AIR TEMPERATURE (C) -2.4 -3.0 2.3 9.0 12.8 16.7 16.8 18.3 12.5 8.3 2.0 -3.0 7.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 8 0 0 0 0 8 DAYS WITH MINIMUM TEMP. <=-4 11 12 0 0 0 0 0 0 0 0 1 16 40 DAYS WITH FREEZING MIN.<= 0 25 22 8 0 0 0 0 0 0 0 12 25 92 TEMPERATURE RECORDS LOWEST(C) -7.4 -9.0 -3.6 3.0 8.4 13.2 14.4 11.0 9.4 2.4 -4.6 -7.8 -9.0 DAY 20 19 8 5 3 2 22 29 27 30 30 2 MAXIMUM AIR TEMPERATURE (C) 10.3 8.6 14.9 23.9 28.7 33.8 33.5 34.8 29.9 21.0 14.3 9.4 21.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 9 30 31 31 19 0 0 0 120 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.0 16.0 19.8 28.0 32.0 37.4 37.0 38.2 32.0 26.6 19.6 15.0 38.2 DAY 4 28 17 26 20 12 29 9 16 1 21 5 DIF. BETWEEN (MAX.-MIN.) (C) 12.7 11.6 12.6 14.9 15.9 17.1 16.7 16.5 17.4 12.7 12.3 12.4 14.4 MEAN DAILY TEMP. (MDT) (C) 3.9 2.8 8.6 16.5 20.7 25.2 25.2 26.6 21.2 14.6 8.1 3.2 14.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 10.2 127.1 129.7 173.4 18.8 0.0 0.0 0.0 459.2 HEATING DEG. DAYS(BASE 18 0C) 436.9 425.1 292.7 52.8 0.0 0.0 0.0 0.0 0.0 108.2 295.9 458.5 2070.1 DEWPOINT (MEAN C) -6.1 -6.5 -2.0 3.8 5.6 7.1 8.2 10.1 -0.0 3.8 -2.6 -5.7 1.3 MIXING RATIO (G/KG) 3.16 3.08 4.28 6.47 7.26 8.15 8.90 10.26 4.94 6.37 4.15 3.26 5.86 VAPOUR PRESSURE (HPA) 4.04 3.92 5.45 8.23 9.26 10.33 11.24 12.90 6.32 8.15 5.31 4.16 7.44 SATURATION DEF. (HPA) 4.50 3.98 6.73 12.86 18.72 27.82 26.88 27.33 23.25 9.83 6.21 4.01 14.34 RELATIVE HUMIDITY (MEAN %) 52 54 49 43 36 29 31 34 23 50 51 55 42 RELATIVE HUMIDITY (MAX. %) 71 75 70 64 55 42 42 45 36 72 71 75 60 RELATIVE HUMIDITY (MIN. %) 34 35 33 29 24 21 25 27 16 34 32 37 29 RELATIVE HUMIDITY (MEAN% 03UTC) 68 72 68 61 52 42 42 45 36 70 69 70 58 RELATIVE HUMIDITY (MEAN% 09UTC) 41 43 40 33 28 25 27 30 19 38 39 43 34 RELATIVE HUMIDITY (MEAN% 15UTC) 48 48 46 37 31 24 27 30 19 47 47 54 38 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 14.1 24.1 37.2 5.5 4.3 0.0 0.0 0.0 0.0 20.4 8.5 5.9 120.0 DAYS WITH PRECIPITATION >=10 0 1 1 0 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 1 2 2 0 0 0 0 0 0 2 0 0 7 DAYS WITH PRECIPITATION >= 1 5 5 7 3 3 0 0 0 0 5 3 2 33 DAYS WITH PRECIPITATION 6 8 9 6 7 0 1 1 0 14 7 5 64 GREATEST DAILY PRECIPITATION 7.0 12.0 18.0 3.0 2.0 0.0 0.0 0.0 0.0 5.0 3.0 2.7 18.0 DAY 17 14 19 13 7 ** ** ** ** 10 4 19 DAY WITH THUNDER STORM 0 0 0 0 1 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 3 3 2 0 0 0 0 0 0 0 1 4 13 DAYS WITH DUST 0 1 0 0 0 0 0 0 0 1 0 0 2 WIND DIRECTION (PREVAILING) 270 315 270 315 315 315 360 315 315 270 225 270 315 PREVAILING WIND SPEED(KNOTS) 9.3 8.0 10.7 7.1 7.7 7.1 6.1 6.2 8.8 9.4 7.9 10.1 7.8 PREVAILING WIND PERCENT 14.5 17.3 22.5 13.5 20.4 18.3 14.9 11.1 18.2 14.0 8.3 8.2 12.6 CALMS PERCENT OF WIND 44.6 46.4 45.6 36.8 36.6 50.0 43.1 63.7 58.8 55.3 67.8 74.9 52.0 NO. OF WIND OBSERVATION 186 168 160 171 186 180 174 171 170 179 180 183 2108 VECTOR WIND DIRECTION (MEAN) 292 276 276 305 323 313 32 347 328 285 259 276 300 VECTOR WIND MAGNITUDE(KNOTS) 2.3 2.8 4.1 1.8 2.9 2.1 1.3 1.5 2.2 2.4 1.4 1.3 1.9 WIND STEADINESES (MEAN %) 56.1 60.9 77.4 38.3 64.4 58.3 29.5 55.6 71.0 68.6 56.0 65.0 50.0 WIND SPEED (MEAN KNOTS) 4.1 4.6 5.3 4.7 4.5 3.6 4.4 2.7 3.1 3.5 2.5 2.0 3.8 FASTEST WIND DIRECTION 290 260 270 340 230 210 360 130 300 270 270 260 270 FASTEST WIND SPEED (KNOTS) 21 23 19 19 23 17 23 17 23 27 17 19 27 DAY 17 17 2 2 24 13 19 3 24 1 12 29 DAYS WITH SKY CLEAR (0-2)/8 15 18 14 10 16 28 29 25 24 11 18 21 229 DAYS WITH P.CLOUDY (3-6)/8 12 7 15 20 15 2 2 6 6 16 8 6 115 DAYS WITH CLOUDY (7-8)/8 4 3 2 0 0 0 0 0 0 4 4 4 21 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 0 0 0 0 0 0 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 799.1 796.7 797.9 800.4 802.7 798.9 797.3 797.0 802.9 803.4 801.2 800.4 799.8 MAX. QFE PRESSURE IN HPA 804.0 803.0 805.4 807.4 807.7 805.4 801.2 802.7 807.0 808.2 810.3 805.1 810.3 DAY-HOUR 21- 6 28-18 31- 6 4- 6 11- 6 6- 6 5- 6 27- 6 7- 6 3-18 18- 6 5- 6 MIN. QFE PRESSURE IN HPA 790.8 789.8 792.0 792.8 797.8 793.8 789.1 790.0 797.0 799.0 795.0 792.0 789.1 DAY-HOUR 17- 3 14- 3 2-12 18-12 24-12 24-15 31-15 1-15 12-12 17-12 13-12 7-12 MEAN QNH PRESSURE IN HPA 1021.6 1018.7 1020.2 1023.2 1026.0 1021.3 1019.5 1019.1 1026.2 1026.9 1024.3 1023.2 1022.5 MAX. QNH PRESSURE IN HPA 1027.6 1026.4 1029.3 1031.8 1032.2 1029.3 1024.2 1026.0 1031.3 1032.8 1035.3 1029.0 1035.3 DAY-HOUR 21- 6 28-18 31- 6 4- 6 11- 6 6- 6 5- 6 27- 6 7- 6 3-18 18- 6 5- 6 MIN. QNH PRESSURE IN HPA 1011.5 1010.3 1013.0 1014.0 1020.1 1015.2 1009.4 1010.5 1019.1 1021.5 1016.6 1013.0 1009.4 DAY-HOUR 17- 3 14- 3 2-12 18-12 24-12 24-15 31-15 1-15 12-12 17-12 13-12 7-12 MEAN QFF PRESSURE IN HPA 1021.9 ****** ****** ****** 1010.7 1001.8 ****** ****** ****** ****** 1020.7 ****** ****** MAX. QFF PRESSURE IN HPA 1032.5 ****** ****** ****** 1019.7 1010.9 ****** ****** ****** ****** 1034.8 ****** ****** DAY-HOUR 21- 6 **-** **-** **-** 11- 6 6- 3 **-** **-** **-** **-** 18- 6 **-** MIN. QFF PRESSURE IN HPA 1007.1 ****** ****** ****** 1003.9 995.1 ****** ****** ****** ****** 1012.5 ****** ****** DAY-HOUR 29- 3 **-** **-** **-** 24- 6 18-18 **-** **-** **-** **-** 6-18 **-** 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 798.8 796.3 797.9 801.0 803.5 799.9 798.5 797.8 803.6 803.5 801.2 800.1 800.2 MAX. QFE PRESSURE IN HPA 802.1 801.6 803.9 806.0 807.2 804.9 800.9 802.0 806.2 807.2 810.0 804.0 810.0 DAY 21 28 31 4 11 6 8 28 7 4 19 5 MIN. QFE PRESSURE IN HPA 790.8 789.8 792.5 794.9 798.5 796.5 792.8 793.0 799.5 800.4 797.3 795.3 789.8 DAY 17 14 28 18 24 28 31 1 12 21 7 7 MEAN QNH PRESSURE IN HPA 1021.3 1018.2 1020.2 1023.9 1027.1 1022.6 1020.9 1020.1 1027.1 1027.0 1024.2 1022.9 1023.0 MAX. QNH PRESSURE IN HPA 1025.3 1024.7 1027.5 1030.1 1031.5 1028.7 1023.8 1025.2 1030.3 1031.5 1035.0 1027.6 1035.0 DAY 21 28 31 4 11 6 8 28 7 4 19 5 MIN. QNH PRESSURE IN HPA 1011.5 1010.3 1013.6 1016.5 1020.9 1018.5 1014.0 1014.2 1022.1 1023.2 1019.5 1017.0 1010.3 DAY 17 14 28 18 24 28 31 1 12 21 7 7 MEAN QFF PRESSURE IN HPA 1021.4 1018.8 1015.9 1012.9 1012.3 1003.9 1002.2 1000.5 1012.5 1017.5 1020.6 1023.9 1013.5 MAX. QFF PRESSURE IN HPA 1028.9 1028.3 1026.1 1022.9 1019.0 1010.9 1006.4 1010.0 1016.5 1022.6 1034.8 1029.4 1034.8 DAY 21 20 5 4 11 6 14 29 29 15 19 10 MIN. QFF PRESSURE IN HPA 1007.1 1008.9 1005.9 1004.4 1005.6 999.0 992.8 993.7 1006.4 1009.0 1013.1 1010.4 992.8 DAY 29 14 25 28 24 13 31 8 12 1 9 30 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 800.4 797.8 799.1 801.7 804.0 800.3 798.7 798.4 804.4 804.5 802.4 801.6 801.1 MAX. QFE PRESSURE IN HPA 804.0 802.9 805.4 807.4 807.7 805.4 801.2 802.7 807.0 808.0 810.3 805.1 810.3 DAY 21 28 31 4 11 6 5 27 7 4 18 5 MIN. QFE PRESSURE IN HPA 792.2 791.8 793.6 795.8 798.6 797.0 793.0 793.0 800.2 801.5 798.9 795.5 791.8 DAY 17 14 28 18 24 18 31 1 12 1 7 7 MEAN QNH PRESSURE IN HPA 1023.2 1020.0 1021.6 1024.8 1027.6 1023.1 1021.2 1020.8 1028.1 1028.2 1025.7 1024.7 1024.1 MAX. QNH PRESSURE IN HPA 1027.6 1026.3 1029.3 1031.8 1032.2 1029.3 1024.2 1026.0 1031.3 1032.5 1035.3 1029.0 1035.3 DAY 21 28 31 4 11 6 5 27 7 4 18 5 MIN. QNH PRESSURE IN HPA 1013.2 1012.7 1014.9 1017.6 1021.0 1019.1 1014.2 1014.2 1023.0 1024.6 1021.4 1017.3 1012.7 DAY 17 14 28 18 24 18 31 1 12 1 7 7 MEAN QFF PRESSURE IN HPA 1023.3 1020.5 ****** 1010.2 1011.2 1002.5 999.3 1000.5 1012.0 1017.1 1021.4 1025.7 ****** MAX. QFF PRESSURE IN HPA 1032.5 1029.7 ****** 1015.3 1019.7 1009.9 1004.4 1006.5 1016.1 1022.6 1034.8 1031.5 ****** DAY 21 20 ** 11 11 6 8 27 29 25 18 10 MIN. QFF PRESSURE IN HPA 1010.2 1012.2 ****** 1004.4 1003.9 997.0 992.2 992.2 1006.1 1008.0 1014.0 1013.7 ****** DAY 17 14 ** 28 24 18 31 1 12 1 7 7 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 799.2 797.1 798.4 800.8 803.0 799.3 797.8 797.4 803.3 803.5 801.4 800.6 800.2 MAX. QFE PRESSURE IN HPA 803.9 802.2 805.4 806.8 807.1 804.5 800.6 802.0 806.1 807.0 809.6 804.3 809.6 DAY 21 28 31 4 11 6 20 28 7 25 18 10 MIN. QFE PRESSURE IN HPA 790.8 791.9 793.5 794.4 798.1 796.0 791.6 791.7 799.0 800.5 797.9 793.8 790.8 DAY 17 14 27 18 24 18 31 1 12 1 7 7 MEAN QNH PRESSURE IN HPA 1021.8 1019.2 1020.8 1023.7 1026.5 1021.9 1020.1 1019.5 1026.7 1027.1 1024.5 1023.5 1022.9 MAX. QNH PRESSURE IN HPA 1027.5 1025.4 1029.3 1031.0 1031.4 1028.2 1023.5 1025.2 1030.2 1031.3 1034.5 1028.0 1034.5 DAY 21 28 31 4 11 6 20 28 7 25 18 10 MIN. QNH PRESSURE IN HPA 1011.5 1012.9 1014.8 1015.9 1020.4 1017.9 1012.5 1012.6 1021.5 1023.4 1020.2 1015.2 1011.5 DAY 17 14 27 18 24 18 31 1 12 1 7 7 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 798.0 795.7 796.9 799.3 801.4 797.8 796.3 795.8 801.6 802.5 800.2 799.1 798.7 MAX. QFE PRESSURE IN HPA 801.0 800.5 803.9 805.0 805.6 802.9 799.2 800.1 805.0 806.3 808.5 802.5 808.5 DAY 21 28 15 4 11 6 13 27 7 25 18 10 MIN. QFE PRESSURE IN HPA 791.3 791.4 792.0 792.8 797.8 794.0 789.4 790.5 797.0 799.0 795.0 792.0 789.4 DAY 17 14 2 18 24 27 31 1 12 17 13 7 MEAN QNH PRESSURE IN HPA 1020.3 1017.5 1019.0 1021.9 1024.5 1020.1 1018.3 1017.6 1024.7 1025.8 1023.0 1021.7 1021.2 MAX. QNH PRESSURE IN HPA 1024.0 1023.4 1027.5 1028.9 1029.6 1026.3 1021.8 1022.9 1028.9 1030.4 1033.1 1025.8 1033.1 DAY 21 28 15 4 11 6 13 27 7 25 18 10 MIN. QNH PRESSURE IN HPA 1012.1 1012.3 1013.0 1014.0 1020.1 1015.4 1009.8 1011.2 1019.1 1021.5 1016.6 1013.0 1009.8 DAY 17 14 2 18 24 27 31 1 12 17 13 7 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 798.6 796.2 797.3 799.4 801.5 797.4 796.0 795.6 801.6 803.0 800.7 800.0 798.9 MAX. QFE PRESSURE IN HPA 802.2 801.0 804.5 805.2 805.2 802.4 799.2 800.5 804.3 807.2 808.7 803.0 808.7 DAY 21 28 15 4 11 5 19 28 7 3 18 10 MIN. QFE PRESSURE IN HPA 793.0 791.3 792.2 793.4 798.3 793.8 789.1 790.0 797.0 799.1 796.0 793.3 789.1 DAY 17 13 27 18 23 24 31 1 12 20 13 7 MEAN QNH PRESSURE IN HPA 1021.1 1018.1 1019.4 1022.1 1024.5 1019.6 1017.9 1017.4 1024.8 1026.4 1023.6 1022.8 1021.5 MAX. QNH PRESSURE IN HPA 1025.4 1024.0 1028.2 1029.1 1029.1 1025.7 1021.8 1023.4 1028.0 1031.5 1033.4 1026.4 1033.4 DAY 21 28 15 4 11 5 19 28 7 3 18 10 MIN. QNH PRESSURE IN HPA 1014.2 1012.1 1013.2 1014.7 1020.7 1015.2 1009.4 1010.5 1019.1 1021.7 1017.9 1014.6 1009.4 DAY 17 13 27 18 23 24 31 1 12 20 13 7 MEAN QFF PRESSURE IN HPA 1021.1 1018.6 1015.0 1010.8 1009.5 1000.5 998.8 997.4 1010.0 1016.9 1020.2 1023.5 1011.9 MAX. QFF PRESSURE IN HPA 1028.8 1027.0 1023.5 1022.1 1015.9 1007.9 1003.9 1007.5 1014.6 1022.7 1033.7 1031.5 1033.7 DAY 21 19 4 4 10 5 13 28 29 24 18 10 MIN. QFF PRESSURE IN HPA 1014.0 1010.0 1005.3 1002.2 1004.6 995.4 988.1 989.2 1002.8 1011.7 1013.4 1014.5 988.1 DAY 28 13 25 28 27 18 31 1 12 20 7 7 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 799.4 797.1 ****** 799.9 802.7 798.6 796.2 797.2 802.7 803.6 801.6 800.8 ****** MAX. QFE PRESSURE IN HPA 803.0 803.0 ****** 803.7 807.0 803.5 799.7 799.9 805.0 808.2 810.0 803.7 ****** DAY 21 28 ** 15 10 5 5 26 21 3 18 9 MIN. QFE PRESSURE IN HPA 793.8 790.5 ****** 794.8 799.2 795.0 791.0 794.0 799.0 800.5 796.5 795.0 ****** DAY 28 13 ** 18 24 27 31 23 12 20 13 7 MEAN QNH PRESSURE IN HPA 1022.0 1019.2 ****** 1022.6 1026.1 1021.0 1018.2 1019.3 1026.0 1027.1 1024.7 1023.7 ****** MAX. QNH PRESSURE IN HPA 1026.4 1026.4 ****** 1027.3 1031.3 1027.0 1022.4 1022.6 1028.9 1032.8 1035.0 1027.3 ****** DAY 21 28 ** 15 10 5 5 26 21 3 18 9 MIN. QNH PRESSURE IN HPA 1015.2 1011.2 ****** 1016.4 1021.8 1016.6 1011.8 1015.4 1021.5 1023.4 1018.5 1016.6 ****** DAY 28 13 ** 18 24 27 31 23 12 20 13 7 MEAN QFF PRESSURE IN HPA 1021.9 1019.7 ****** 1009.0 1009.7 1000.4 997.1 998.7 1010.2 1016.6 1020.5 1024.5 ****** MAX. QFF PRESSURE IN HPA 1030.8 1028.9 ****** 1014.5 1018.1 1007.5 1002.3 1003.4 1014.9 1023.3 1034.3 1031.3 ****** DAY 21 19 ** 13 10 5 7 26 29 25 18 9 MIN. QFF PRESSURE IN HPA 1011.1 1008.3 ****** 1003.0 1004.7 995.1 989.1 994.0 1003.8 1009.6 1012.5 1015.4 ****** DAY 28 13 ** 18 24 18 31 13 12 1 6 6 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 ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.0 4.9 8.1 13.3 20.6 26.0 27.8 27.1 23.3 14.4 10.1 4.4 15.3 MINIMUN AIR TEMPERATURE (C) -3.0 -1.7 0.7 6.4 13.2 16.9 19.3 18.8 14.7 6.0 2.6 -1.2 7.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 5 6 0 0 0 0 11 DAYS WITH MINIMUM TEMP. <=-4 14 6 1 0 0 0 0 0 0 0 0 8 29 DAYS WITH FREEZING MIN.<= 0 26 22 17 1 0 0 0 0 0 0 3 18 87 TEMPERATURE RECORDS LOWEST(C) -9.6 -7.6 -8.0 0.0 7.0 14.4 16.4 14.6 10.2 1.0 -1.4 -8.6 -9.6 DAY 21 1 1 2 3 1 15 29 22 22 27 22 MAXIMUM AIR TEMPERATURE (C) 9.3 11.0 14.2 20.5 28.4 34.7 35.9 35.5 32.5 24.7 20.0 12.6 23.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 9 30 31 31 24 2 0 0 127 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 15.4 16.4 20.2 26.4 31.2 36.4 38.0 37.8 36.4 30.6 24.0 20.4 38.0 DAY 1 25 28 27 17 27 24 6 2 3 1 2 DIF. BETWEEN (MAX.-MIN.) (C) 12.3 12.7 13.5 14.1 15.2 17.8 16.6 16.7 17.8 18.7 17.4 13.8 15.6 MEAN DAILY TEMP. (MDT) (C) 3.2 4.7 7.4 13.4 20.8 25.8 27.6 27.1 23.6 15.3 11.3 5.7 15.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 22.7 144.4 205.6 190.6 81.0 0.1 0.0 0.0 644.4 HEATING DEG. DAYS(BASE 18 0C) 460.3 372.5 327.7 138.9 9.6 0.0 0.0 0.0 0.0 92.2 200.8 381.7 1983.7 DEWPOINT (MEAN C) -6.6 -5.9 -6.5 -1.1 2.7 3.1 4.9 3.6 3.4 -4.0 -5.1 -5.0 -1.4 MIXING RATIO (G/KG) 3.08 3.18 3.17 4.51 6.02 6.09 7.02 6.54 6.32 3.65 3.35 3.38 4.69 VAPOUR PRESSURE (HPA) 3.94 4.06 4.04 5.76 7.67 7.75 8.89 8.28 8.04 4.68 4.31 4.34 5.98 SATURATION DEF. (HPA) 4.10 5.00 7.36 10.40 17.71 27.77 30.22 29.42 22.62 13.26 9.02 4.77 15.14 RELATIVE HUMIDITY (MEAN %) 54 49 40 42 34 24 25 24 29 30 36 54 37 RELATIVE HUMIDITY (MAX. %) 71 70 64 65 54 38 36 38 47 44 52 73 54 RELATIVE HUMIDITY (MIN. %) 36 31 24 23 18 15 16 15 17 17 20 32 22 RELATIVE HUMIDITY (MEAN% 03UTC) 66 69 61 61 49 37 36 35 39 41 47 67 51 RELATIVE HUMIDITY (MEAN% 09UTC) 44 38 30 28 24 19 19 20 21 20 24 40 27 RELATIVE HUMIDITY (MEAN% 15UTC) 53 42 34 29 24 16 18 16 21 24 32 47 30 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 25.3 0.8 24.3 9.7 11.1 0.0 0.0 0.0 0.0 0.0 0.1 7.4 78.7 DAYS WITH PRECIPITATION >=10 1 0 1 0 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 1 0 2 0 1 0 0 0 0 0 0 0 4 DAYS WITH PRECIPITATION >= 1 5 0 3 3 1 0 0 0 0 0 0 3 15 DAYS WITH PRECIPITATION 10 6 11 9 7 2 0 0 0 0 1 5 51 GREATEST DAILY PRECIPITATION 14.0 0.6 14.0 3.4 9.0 0.0 0.0 0.0 0.0 0.0 0.1 3.0 14.0 DAY 21 12 16 14 2 ** ** ** ** ** 11 19 DAY WITH THUNDER STORM 0 0 1 0 5 1 0 0 0 0 0 0 7 DAYS WITH SNOW OR SLEET 3 1 1 1 0 0 0 0 0 0 0 4 10 DAYS WITH DUST 0 0 0 0 1 0 0 0 1 4 3 1 10 WIND DIRECTION (PREVAILING) 270 270 270 360 360 270 45 45 360 360 360 360 360 PREVAILING WIND SPEED(KNOTS) 10.2 9.3 9.6 6.5 6.6 8.6 7.3 8.3 5.0 5.7 5.0 5.4 6.0 PREVAILING WIND PERCENT 18.7 17.3 17.3 11.2 10.1 9.6 6.5 13.3 14.2 16.9 11.3 9.7 10.5 CALMS PERCENT OF WIND 45.2 42.3 49.4 60.1 65.7 67.5 67.3 52.4 51.7 58.5 70.0 71.0 59.5 NO. OF WIND OBSERVATION 166 168 168 233 248 240 248 248 240 248 240 248 2695 VECTOR WIND DIRECTION (MEAN) 266 287 276 295 303 294 12 22 295 335 310 305 300 VECTOR WIND MAGNITUDE(KNOTS) 3.2 2.8 2.6 1.8 1.8 1.3 0.7 1.8 1.0 1.5 0.9 1.2 1.5 WIND STEADINESES (MEAN %) 68.1 63.6 61.9 54.5 66.7 52.0 31.8 51.4 33.3 60.0 52.9 63.2 48.4 WIND SPEED (MEAN KNOTS) 4.7 4.4 4.2 3.3 2.7 2.5 2.2 3.5 3.0 2.5 1.7 1.9 3.1 FASTEST WIND DIRECTION 220 300 240 240 270 240 260 20 240 330 280 280 220 FASTEST WIND SPEED (KNOTS) 23 19 23 23 23 17 16 19 19 16 17 23 23 DAY 9 22 5 25 2 25 7 18 11 5 13 11 DAYS WITH SKY CLEAR (0-2)/8 17 16 15 12 13 28 26 27 29 31 23 19 256 DAYS WITH P.CLOUDY (3-6)/8 8 11 11 15 14 2 5 4 1 0 5 6 82 DAYS WITH CLOUDY (7-8)/8 6 1 5 3 4 0 0 0 0 0 2 6 27 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 0 0 0 0 1 1 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 799.7 799.0 798.5 799.6 800.8 799.3 797.4 797.4 799.7 803.7 805.1 801.9 800.2 MAX. QFE PRESSURE IN HPA 807.4 804.3 805.8 805.8 806.2 804.8 803.1 800.9 804.3 810.1 811.6 810.0 811.6 DAY-HOUR 8- 6 11- 6 27- 6 20- 6 16-18 1- 6 12- 6 18- 6 30- 6 28- 6 1- 6 4- 6 MIN. QFE PRESSURE IN HPA 788.3 791.0 788.0 792.8 795.8 793.8 791.7 792.6 795.0 798.8 799.8 794.3 788.0 DAY-HOUR 24-12 17-12 6-12 1-12 2-12 28-12 26-15 5-15 11-12 4-12 12-12 27-12 MEAN QNH PRESSURE IN HPA 1022.4 1021.6 1020.9 1022.2 1023.7 1021.9 1019.6 1019.5 1022.4 1027.3 1029.0 1025.1 1023.0 MAX. QNH PRESSURE IN HPA 1031.8 1028.0 1029.8 1029.8 1030.3 1028.6 1026.5 1023.8 1028.0 1035.1 1036.9 1035.0 1036.9 DAY-HOUR 8- 6 11- 6 27- 6 20- 6 16-18 1- 6 12- 6 18- 6 30- 6 28- 6 1- 6 4- 6 MIN. QNH PRESSURE IN HPA 1008.5 1011.8 1008.1 1014.0 1017.6 1015.2 1012.6 1013.7 1016.6 1021.3 1022.5 1015.8 1008.1 DAY-HOUR 24-12 17-12 6-12 1-12 2-12 28-12 26-15 5-15 11-12 4-12 12-12 27-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1012.3 1007.7 1001.7 997.9 998.3 1004.2 1016.5 1021.9 1022.8 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1020.7 1015.2 1011.4 1005.5 1004.8 1013.8 1027.0 1030.3 1034.1 ****** DAY-HOUR **-** **-** **-** 14-18 17- 3 1- 3 12- 3 19- 3 30- 3 29- 3 26- 6 25- 6 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1005.6 1000.5 993.7 988.7 991.4 995.0 1004.9 1013.1 1007.4 ****** DAY-HOUR **-** **-** **-** 10- 0 29-21 28-12 26-12 5-12 11-12 4-12 12-12 12- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 799.7 800.7 799.5 797.5 797.4 799.7 803.6 805.1 801.8 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 803.8 804.3 803.4 802.5 800.1 802.2 808.4 809.2 807.9 ****** DAY ** ** ** 20 17 2 12 18 30 28 2 4 MIN. QFE PRESSURE IN HPA ****** ****** ****** 794.9 796.8 795.2 793.4 794.4 796.6 799.8 800.7 795.3 ****** DAY ** ** ** 4 30 29 27 5 11 18 12 14 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1022.4 1023.6 1022.1 1019.7 1019.6 1022.4 1027.1 1028.9 1025.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1027.4 1028.0 1026.9 1025.8 1022.9 1025.4 1033.0 1034.0 1032.4 ****** DAY ** ** ** 20 17 2 12 18 30 28 2 4 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1016.5 1018.8 1016.9 1014.7 1015.9 1018.6 1022.5 1023.6 1017.0 ****** DAY ** ** ** 4 30 29 27 5 11 18 12 14 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1011.6 1007.2 1001.7 997.6 997.8 1003.2 1015.0 1020.3 1021.3 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1018.9 1012.2 1008.2 1004.0 1002.2 1009.4 1022.4 1025.5 1028.5 ****** DAY ** ** ** 15 7 2 12 19 30 28 27 25 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1005.6 1001.1 995.5 990.7 993.0 996.9 1007.3 1014.2 1007.4 ****** DAY ** ** ** 10 30 28 27 6 11 4 13 12 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 799.6 798.9 798.7 799.7 801.4 800.2 798.2 798.1 800.5 804.2 805.6 802.3 800.6 MAX. QFE PRESSURE IN HPA 805.5 803.2 804.5 804.5 805.5 804.2 802.8 800.5 803.3 809.3 810.4 809.2 810.4 DAY 8 11 27 29 17 1 12 18 30 28 1 4 MIN. QFE PRESSURE IN HPA 793.4 793.1 792.2 793.9 797.5 795.7 793.9 794.6 797.3 800.0 801.4 795.3 792.2 DAY 24 17 6 1 3 29 27 5 11 7 12 12 MEAN QNH PRESSURE IN HPA 1022.3 1021.4 1021.2 1022.4 1024.4 1023.0 1020.6 1020.4 1023.4 1027.9 1029.6 1025.6 1023.5 MAX. QNH PRESSURE IN HPA 1029.5 1026.7 1028.2 1028.2 1029.5 1027.9 1026.2 1023.4 1026.8 1034.1 1035.4 1034.0 1035.4 DAY 8 11 27 29 17 1 12 18 30 28 1 4 MIN. QNH PRESSURE IN HPA 1014.7 1014.3 1013.2 1015.3 1019.7 1017.5 1015.3 1016.2 1019.5 1022.8 1024.5 1017.0 1013.2 DAY 24 17 6 1 3 29 27 5 11 7 12 12 MEAN QFF PRESSURE IN HPA 1023.3 1020.8 1017.9 1013.6 1009.6 1004.2 1000.2 1000.6 1006.9 1019.1 1024.3 1024.6 1013.7 MAX. QFF PRESSURE IN HPA 1033.4 1028.9 1026.9 1019.8 1015.2 1011.4 1005.5 1004.8 1013.8 1027.0 1029.0 1032.8 1033.4 DAY 22 23 1 2 17 1 12 19 30 29 26 25 MIN. QFF PRESSURE IN HPA 1010.5 1010.6 1008.1 1007.6 1003.2 998.0 993.3 995.2 999.8 1009.8 1016.3 1009.4 993.3 DAY 24 27 6 10 30 29 28 5 11 7 13 12 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 801.1 800.2 799.9 800.6 801.8 800.6 798.6 798.6 801.2 805.1 806.7 803.2 801.5 MAX. QFE PRESSURE IN HPA 807.4 804.3 805.8 805.8 806.0 804.8 803.1 800.9 804.3 810.1 811.6 810.0 811.6 DAY 8 11 27 20 17 1 12 18 30 28 1 4 MIN. QFE PRESSURE IN HPA 793.7 793.7 791.5 793.8 797.6 795.9 794.2 795.2 797.5 800.4 802.3 795.0 791.5 DAY 24 17 6 1 2 28 27 5 11 7 12 27 MEAN QNH PRESSURE IN HPA 1024.1 1023.0 1022.6 1023.5 1025.0 1023.5 1021.1 1021.0 1024.2 1029.0 1030.9 1026.7 1024.5 MAX. QNH PRESSURE IN HPA 1031.8 1028.0 1029.8 1029.8 1030.1 1028.6 1026.5 1023.8 1028.0 1035.1 1036.9 1035.0 1036.9 DAY 8 11 27 20 17 1 12 18 30 28 1 4 MIN. QNH PRESSURE IN HPA 1015.1 1015.1 1012.4 1015.2 1019.8 1017.7 1015.7 1016.9 1019.7 1023.2 1025.6 1016.6 1012.4 DAY 24 17 6 1 2 28 27 5 11 7 12 27 MEAN QFF PRESSURE IN HPA ****** 1022.0 ****** 1014.0 1008.9 1002.9 999.2 999.8 1006.4 1019.0 1024.9 1025.7 ****** MAX. QFF PRESSURE IN HPA ****** 1030.4 ****** 1019.9 1014.1 1009.6 1004.4 1004.2 1013.3 1026.9 1030.3 1034.1 ****** DAY ** 3 ** 14 7 2 12 29 30 28 26 25 MIN. QFF PRESSURE IN HPA ****** 1011.5 ****** 1009.5 1002.6 996.0 992.6 994.5 998.5 1009.4 1017.5 1010.4 ****** DAY ** 17 ** 23 30 28 27 5 11 7 13 12 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 800.0 799.3 799.0 799.8 801.0 799.6 797.9 797.8 800.1 803.8 805.2 802.0 800.5 MAX. QFE PRESSURE IN HPA 806.6 803.2 805.2 805.1 804.9 803.2 802.3 800.1 803.1 808.9 810.0 807.8 810.0 DAY 8 3 27 19 16 1 12 18 30 28 1 4 MIN. QFE PRESSURE IN HPA 789.2 792.4 789.0 793.2 796.6 795.1 793.5 794.6 796.5 799.8 801.3 795.2 789.0 DAY 24 17 6 1 2 29 27 5 11 7 12 27 MEAN QNH PRESSURE IN HPA 1022.8 1021.9 1021.6 1022.5 1024.0 1022.2 1020.2 1020.0 1022.8 1027.4 1029.1 1025.2 1023.3 MAX. QNH PRESSURE IN HPA 1030.8 1026.7 1029.1 1029.0 1028.7 1026.7 1025.6 1022.9 1026.5 1033.6 1035.0 1032.3 1035.0 DAY 8 3 27 19 16 1 12 18 30 28 1 4 MIN. QNH PRESSURE IN HPA 1009.6 1013.5 1009.3 1014.5 1018.6 1016.8 1014.8 1016.2 1018.5 1022.5 1024.3 1016.9 1009.3 DAY 24 17 6 1 2 29 27 5 11 7 12 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1012.0 1007.4 1001.4 997.9 998.0 1003.5 1015.3 1020.5 1021.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1018.1 1012.6 1008.1 1003.3 1001.8 1010.2 1022.6 1025.4 1028.6 ****** DAY ** ** ** 14 7 1 12 19 30 28 28 25 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1006.7 1001.6 994.4 990.3 993.5 996.3 1006.9 1013.7 1009.1 ****** DAY ** ** ** 10 30 28 26 5 11 4 12 12 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 798.7 797.9 797.4 798.3 799.7 798.1 796.5 796.2 798.3 802.3 803.7 800.5 799.0 MAX. QFE PRESSURE IN HPA 804.5 801.7 802.6 803.9 803.6 801.8 801.0 798.6 801.4 807.0 808.2 806.0 808.2 DAY 11 10 27 19 8 1 11 17 30 28 1 5 MIN. QFE PRESSURE IN HPA 788.3 791.0 788.0 792.8 795.8 793.8 792.3 792.9 795.0 798.8 799.8 794.3 788.0 DAY 24 17 6 1 2 28 26 25 11 4 12 27 MEAN QNH PRESSURE IN HPA 1021.2 1020.2 1019.5 1020.7 1022.4 1020.5 1018.5 1018.2 1020.7 1025.6 1027.3 1023.3 1021.5 MAX. QNH PRESSURE IN HPA 1028.2 1024.8 1025.9 1027.5 1027.1 1025.0 1024.0 1021.0 1024.5 1031.3 1032.8 1030.1 1032.8 DAY 11 10 27 19 8 1 11 17 30 28 1 5 MIN. QNH PRESSURE IN HPA 1008.5 1011.8 1008.1 1014.0 1017.6 1015.2 1013.4 1014.1 1016.6 1021.3 1022.5 1015.8 1008.1 DAY 24 17 6 1 2 28 26 25 11 4 12 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.3 1006.1 999.8 996.2 996.3 1001.3 1013.3 1018.7 1019.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1016.0 1012.6 1006.3 1002.1 999.8 1007.6 1020.5 1024.0 1026.7 ****** DAY ** ** ** 14 8 1 11 31 23 28 28 22 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1005.8 1000.9 993.7 988.7 991.4 995.0 1004.9 1013.1 1008.6 ****** DAY ** ** ** 10 30 28 26 5 11 4 12 12 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 799.7 798.5 797.6 798.4 799.7 797.9 796.1 796.0 798.4 802.8 804.4 801.4 799.2 MAX. QFE PRESSURE IN HPA 806.1 802.0 802.5 804.6 805.0 802.0 800.5 798.7 801.7 807.9 808.5 807.2 808.5 DAY 11 10 26 19 16 1 11 17 30 28 1 5 MIN. QFE PRESSURE IN HPA 789.9 791.1 788.8 794.4 796.2 794.3 791.7 792.6 795.4 799.3 800.7 795.5 788.8 DAY 24 17 6 1 2 28 26 5 10 4 12 27 MEAN QNH PRESSURE IN HPA 1022.4 1020.9 1019.9 1020.9 1022.4 1020.2 1017.9 1017.8 1020.8 1026.1 1028.1 1024.4 1021.8 MAX. QNH PRESSURE IN HPA 1030.2 1025.2 1025.8 1028.4 1028.9 1025.2 1023.4 1021.2 1024.8 1032.4 1033.1 1031.5 1033.1 DAY 11 10 26 19 16 1 11 17 30 28 1 5 MIN. QNH PRESSURE IN HPA 1010.4 1011.9 1009.1 1015.9 1018.1 1015.8 1012.6 1013.7 1017.1 1021.9 1023.6 1017.3 1009.1 DAY 24 17 6 1 2 28 26 5 10 4 12 27 MEAN QFF PRESSURE IN HPA 1023.4 1020.3 1016.3 1012.0 1007.5 1001.2 997.4 997.9 1004.1 1017.3 1022.8 1023.4 1012.0 MAX. QFF PRESSURE IN HPA 1032.6 1027.5 1023.1 1017.9 1013.0 1009.1 1003.0 1002.0 1011.2 1024.7 1028.1 1032.1 1032.6 DAY 11 1 1 19 16 1 12 18 30 28 26 25 MIN. QFF PRESSURE IN HPA 1008.2 1010.2 1004.0 1008.6 1003.1 996.1 990.2 992.0 997.2 1008.7 1016.3 1013.7 990.2 DAY 24 27 6 12 29 28 26 5 10 4 12 12 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** 799.4 ****** 800.0 801.0 799.2 797.1 797.4 799.8 804.0 805.3 802.2 ****** MAX. QFE PRESSURE IN HPA ****** 803.1 ****** 805.5 806.2 803.0 801.6 800.6 803.5 808.8 809.6 808.2 ****** DAY ** 2 ** 19 16 4 11 17 30 31 1 5 MIN. QFE PRESSURE IN HPA ****** 791.3 ****** 795.9 797.7 795.2 793.0 794.3 797.1 800.5 801.8 796.7 ****** DAY ** 17 ** 4 29 28 26 4 10 17 11 13 MEAN QNH PRESSURE IN HPA ****** 1022.0 ****** 1022.8 1024.0 1021.7 1019.3 1019.5 1022.5 1027.6 1029.2 1025.4 ****** MAX. QNH PRESSURE IN HPA ****** 1026.5 ****** 1029.5 1030.3 1026.4 1024.7 1023.5 1027.0 1033.5 1034.5 1032.8 ****** DAY ** 2 ** 19 16 4 11 17 30 31 1 5 MIN. QNH PRESSURE IN HPA ****** 1012.1 ****** 1017.7 1019.9 1016.9 1014.2 1015.8 1019.2 1023.4 1025.0 1018.7 ****** DAY ** 17 ** 4 29 28 26 4 10 17 11 13 MEAN QFF PRESSURE IN HPA ****** 1021.0 ****** 1012.8 1007.9 1001.2 997.5 998.4 1004.7 1017.6 1023.3 1024.5 ****** MAX. QFF PRESSURE IN HPA ****** 1029.2 ****** 1020.7 1012.9 1008.0 1003.0 1003.0 1011.8 1024.8 1029.0 1032.6 ****** DAY ** 2 ** 14 16 1 12 29 30 28 26 24 MIN. QFF PRESSURE IN HPA ****** 1008.8 ****** 1008.7 1001.6 995.3 991.2 993.4 998.3 1009.9 1016.4 1014.7 ****** DAY ** 17 ** 9 29 28 26 5 3 3 12 11 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 800.1 801.2 799.5 797.5 797.7 800.0 804.0 805.1 802.1 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 804.7 804.7 803.3 802.2 800.7 803.9 808.9 808.5 807.9 ****** DAY ** ** ** 19 16 1 11 17 30 31 1 3 MIN. QFE PRESSURE IN HPA ****** ****** ****** 795.7 797.5 795.3 793.2 794.7 797.1 800.5 801.2 796.1 ****** DAY ** ** ** 3 29 28 26 4 11 17 11 13 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1022.9 1024.2 1022.2 1019.7 1019.9 1022.8 1027.6 1029.0 1025.3 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1028.5 1028.5 1026.8 1025.4 1023.6 1027.5 1033.6 1033.1 1032.4 ****** DAY ** ** ** 19 16 1 11 17 30 31 1 3 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1017.5 1019.7 1017.0 1014.5 1016.3 1019.2 1023.4 1024.2 1018.0 ****** DAY ** ** ** 3 29 28 26 4 11 17 11 13 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1011.8 1007.5 1001.4 997.4 998.2 1003.6 1015.7 1020.5 1021.9 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1019.9 1011.7 1008.2 1002.6 1002.2 1010.7 1022.7 1025.7 1029.4 ****** DAY ** ** ** 14 5 1 11 18 30 27 26 24 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1007.3 1000.5 995.4 990.3 993.4 996.7 1007.8 1013.3 1009.6 ****** DAY ** ** ** 3 29 28 26 5 10 3 11 11 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.1 4.3 10.2 15.6 17.6 25.1 26.1 27.6 21.9 13.9 10.2 2.9 14.9 MINIMUN AIR TEMPERATURE (C) -2.8 -2.4 4.3 8.3 10.0 16.5 17.5 19.6 13.5 5.6 3.9 -2.8 7.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 8 0 0 0 0 9 DAYS WITH MINIMUM TEMP. <=-4 11 9 0 0 0 0 0 0 0 0 0 11 31 DAYS WITH FREEZING MIN.<= 0 27 22 5 0 0 0 0 0 0 6 1 23 84 TEMPERATURE RECORDS LOWEST(C) -7.2 -9.0 -3.2 2.8 5.8 10.4 15.6 17.4 5.2 -2.2 -1.2 -13.2 -13.2 DAY 31 20 17 1 11 3 1 2 30 22 22 31 MAXIMUM AIR TEMPERATURE (C) 11.5 12.6 17.3 23.3 25.1 33.2 33.9 36.0 30.8 23.2 17.7 10.5 22.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 2 25 31 31 21 0 0 0 110 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.4 20.2 24.6 27.0 30.6 36.2 36.4 37.6 35.0 27.4 23.0 17.8 37.6 DAY 5 13 10 24 27 12 27 11 6 6 1 3 DIF. BETWEEN (MAX.-MIN.) (C) 14.3 15.0 13.0 15.0 15.1 16.7 16.4 16.4 17.3 17.6 13.8 13.3 15.3 MEAN DAILY TEMP. (MDT) (C) 4.3 5.1 10.8 15.8 17.6 24.9 25.7 27.8 22.1 14.4 10.8 3.8 15.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 4.3 120.1 146.4 210.5 57.3 0.0 0.0 0.0 538.6 HEATING DEG. DAYS(BASE 18 0C) 423.4 374.0 223.0 73.0 37.7 0.0 0.0 0.0 6.9 111.8 215.9 438.8 1904.5 DEWPOINT (MEAN C) -6.7 -7.0 -1.6 -3.5 0.4 2.2 0.8 3.6 -0.7 -4.5 -2.0 -5.7 -2.1 MIXING RATIO (G/KG) 3.00 2.93 4.51 3.86 5.17 5.75 5.20 6.37 4.68 3.58 4.22 3.23 4.38 VAPOUR PRESSURE (HPA) 3.84 3.75 5.75 4.94 6.58 7.30 6.61 8.07 5.98 4.60 5.41 4.14 5.58 SATURATION DEF. (HPA) 4.32 5.29 7.43 13.73 14.67 26.44 28.68 30.57 22.01 12.58 7.56 3.93 14.77 RELATIVE HUMIDITY (MEAN %) 53 48 48 31 37 24 21 23 24 30 46 57 37 RELATIVE HUMIDITY (MAX. %) 74 67 68 51 57 37 33 31 36 44 64 73 53 RELATIVE HUMIDITY (MIN. %) 27 27 29 14 21 15 12 15 14 16 26 37 21 RELATIVE HUMIDITY (MEAN% 03UTC) 69 63 62 48 53 37 31 31 32 40 59 69 50 RELATIVE HUMIDITY (MEAN% 09UTC) 36 35 36 18 26 18 14 16 16 19 31 41 26 RELATIVE HUMIDITY (MEAN% 15UTC) 45 38 39 21 27 17 14 18 19 25 39 53 30 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 15.2 6.1 49.9 16.2 32.4 3.0 0.0 0.0 0.0 0.0 13.1 33.7 169.6 DAYS WITH PRECIPITATION >=10 0 0 2 0 1 0 0 0 0 0 1 1 5 DAYS WITH PRECIPITATION >= 5 2 1 3 1 1 0 0 0 0 0 1 2 11 DAYS WITH PRECIPITATION >= 1 3 1 4 3 4 1 0 0 0 0 1 4 21 DAYS WITH PRECIPITATION 7 3 9 3 4 1 0 1 0 0 3 6 37 GREATEST DAILY PRECIPITATION 6.0 6.0 22.0 8.4 22.0 3.0 0.0 0.0 0.0 0.0 13.0 22.0 22.0 DAY 17 26 20 6 9 2 ** ** ** ** 12 27 DAY WITH THUNDER STORM 0 0 0 1 1 1 0 0 0 0 0 0 3 DAYS WITH SNOW OR SLEET 4 1 1 0 0 0 0 0 0 0 0 4 10 DAYS WITH DUST 0 1 2 6 5 6 0 3 0 4 0 0 27 WIND DIRECTION (PREVAILING) 360 270 270 270 270 360 45 360 360 360 270 270 360 PREVAILING WIND SPEED(KNOTS) 6.0 10.7 9.7 10.7 10.9 6.4 6.2 5.9 5.6 5.4 9.6 9.1 5.9 PREVAILING WIND PERCENT 9.7 12.9 21.0 17.5 13.7 15.4 16.6 12.9 12.5 8.9 10.4 9.3 9.4 CALMS PERCENT OF WIND 71.8 62.9 51.6 43.8 51.6 57.1 55.5 66.1 65.4 69.8 73.3 75.0 62.0 NO. OF WIND OBSERVATION 248 232 248 240 248 240 247 248 240 248 240 248 2927 VECTOR WIND DIRECTION (MEAN) 299 289 271 282 283 15 36 357 359 301 261 274 299 VECTOR WIND MAGNITUDE(KNOTS) 1.1 1.8 2.8 3.2 2.5 1.4 2.0 0.6 0.8 1.2 1.4 1.0 1.2 WIND STEADINESES (MEAN %) 52.4 66.7 68.3 64.0 61.0 48.3 69.0 28.6 38.1 52.2 70.0 55.6 42.9 WIND SPEED (MEAN KNOTS) 2.1 2.7 4.1 5.0 4.1 2.9 2.9 2.1 2.1 2.3 2.0 1.8 2.8 FASTEST WIND DIRECTION 310 280 260 220 290 30 90 10 350 280 260 250 280 FASTEST WIND SPEED (KNOTS) 16 39 23 27 23 14 17 14 16 27 21 19 39 DAY 9 14 12 17 1 2 3 19 10 19 19 14 DAYS WITH SKY CLEAR (0-2)/8 16 20 4 18 20 29 21 19 23 25 13 18 226 DAYS WITH P.CLOUDY (3-6)/8 12 7 18 7 8 1 10 12 7 6 13 8 109 DAYS WITH CLOUDY (7-8)/8 3 2 9 5 3 0 0 0 0 0 4 5 31 DAYS WITH VISIBILITY =< 2 KM 0 1 0 0 0 0 0 0 0 0 0 1 2 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 799.7 800.7 799.7 799.9 798.9 797.2 797.6 796.4 801.4 804.6 803.1 801.2 800.0 MAX. QFE PRESSURE IN HPA 808.6 805.2 807.3 804.4 804.2 802.9 801.5 799.6 806.2 810.0 810.3 806.6 810.3 DAY-HOUR 4- 6 20- 6 4- 6 14- 6 26- 6 5- 6 23- 6 21- 6 30- 6 9- 6 27- 6 18- 6 MIN. QFE PRESSURE IN HPA 790.8 794.0 789.5 795.8 794.5 791.5 794.3 792.6 794.6 798.7 797.2 796.2 789.5 DAY-HOUR 17- 0 8- 0 16- 0 26- 0 30-12 20-15 16-15 11-15 8-12 17-12 15-12 7- 0 MEAN QNH PRESSURE IN HPA 1022.4 1023.6 1022.4 1022.6 1021.4 1019.3 1019.8 1018.4 1024.5 1028.3 1026.6 1024.2 1022.8 MAX. QNH PRESSURE IN HPA 1033.2 1029.1 1031.7 1028.1 1027.9 1026.3 1024.6 1022.3 1030.3 1035.0 1035.3 1030.8 1035.3 DAY-HOUR 4- 6 20- 6 4- 6 14- 6 26- 6 5- 6 23- 6 21- 6 30- 6 9- 6 27- 6 18- 6 MIN. QNH PRESSURE IN HPA 1011.5 1015.4 1009.9 1017.6 1016.0 1012.4 1015.8 1013.7 1016.2 1021.2 1019.3 1018.1 1009.9 DAY-HOUR 17- 0 8- 0 16- 0 26- 0 30-12 20-15 16-15 11-15 8-12 17-12 15-12 7- 0 MEAN QFF PRESSURE IN HPA 1021.0 1021.5 1014.8 1010.8 1007.8 999.8 999.6 996.9 1007.6 1018.1 1019.2 1023.1 1011.7 MAX. QFF PRESSURE IN HPA 1034.4 1034.2 1028.1 1018.9 1018.1 1010.8 1005.8 1002.7 1020.5 1031.6 1028.2 1033.9 1034.4 DAY-HOUR 4- 6 19- 6 2- 6 1- 3 9- 9 3- 3 23- 3 1- 3 30- 3 22- 3 27- 6 21- 6 MIN. QFF PRESSURE IN HPA 1003.7 1005.9 1001.5 1004.3 998.2 990.6 994.8 990.6 997.0 1007.8 1011.4 1011.9 990.6 DAY-HOUR 17- 0 8- 0 12-12 25- 0 29- 0 20-18 16-12 11-12 8-12 17-21 12- 0 7-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 799.6 800.4 799.4 799.6 798.8 797.3 797.5 796.5 801.3 804.6 803.1 801.2 799.9 MAX. QFE PRESSURE IN HPA 807.9 804.1 805.8 801.8 802.3 801.0 800.5 798.7 804.4 808.3 808.4 804.9 808.4 DAY 5 20 4 20 26 5 23 1 30 22 27 17 MIN. QFE PRESSURE IN HPA 790.8 794.0 789.5 795.8 795.0 792.5 795.3 794.2 796.4 799.9 798.2 796.2 789.5 DAY 17 8 16 26 30 21 16 12 8 18 12 7 MEAN QNH PRESSURE IN HPA 1022.3 1023.3 1022.0 1022.3 1021.2 1019.4 1019.8 1018.4 1024.3 1028.4 1026.5 1024.2 1022.7 MAX. QNH PRESSURE IN HPA 1032.4 1027.8 1029.8 1025.0 1025.6 1024.0 1023.4 1021.2 1028.1 1032.9 1033.0 1028.7 1033.0 DAY 5 20 4 20 26 5 23 1 30 22 27 17 MIN. QNH PRESSURE IN HPA 1011.5 1015.4 1009.9 1017.6 1016.6 1013.6 1017.0 1015.7 1018.4 1022.6 1020.6 1018.1 1009.9 DAY 17 8 16 26 30 21 16 12 8 18 12 7 MEAN QFF PRESSURE IN HPA 1019.5 1019.9 1013.6 1009.7 1007.3 999.6 999.2 996.6 1006.7 1017.1 1018.1 1021.9 1010.8 MAX. QFF PRESSURE IN HPA 1029.1 1030.7 1024.6 1014.5 1014.9 1006.1 1003.5 1000.2 1016.2 1028.3 1024.0 1030.6 1030.7 DAY 5 20 4 2 11 4 23 1 30 22 27 21 MIN. QFF PRESSURE IN HPA 1003.7 1005.9 1003.1 1004.3 998.2 991.4 996.6 992.4 998.5 1008.5 1011.4 1012.3 991.4 DAY 17 8 16 25 29 21 17 12 1 18 12 7 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 799.8 800.8 799.9 800.2 799.4 797.9 798.3 797.2 802.0 805.0 803.5 801.3 800.4 MAX. QFE PRESSURE IN HPA 807.4 804.4 805.9 802.7 803.3 802.3 800.8 799.3 805.4 808.7 808.8 805.4 808.8 DAY 5 19 4 20 26 5 23 1 30 9 27 17 MIN. QFE PRESSURE IN HPA 791.9 794.7 790.1 796.3 795.0 793.1 795.7 794.9 796.5 800.1 799.7 796.4 790.1 DAY 29 8 16 26 29 21 16 11 8 18 15 7 MEAN QNH PRESSURE IN HPA 1022.5 1023.7 1022.6 1023.0 1022.0 1020.2 1020.7 1019.3 1025.2 1028.9 1027.0 1024.4 1023.3 MAX. QNH PRESSURE IN HPA 1031.8 1028.1 1030.0 1026.0 1026.8 1025.6 1023.7 1021.9 1029.3 1033.4 1033.5 1029.3 1033.5 DAY 5 19 4 20 26 5 23 1 30 9 27 17 MIN. QNH PRESSURE IN HPA 1012.9 1016.3 1010.7 1018.2 1016.6 1014.3 1017.5 1016.5 1018.5 1022.9 1022.4 1018.4 1010.7 DAY 29 8 16 26 29 21 16 11 8 18 15 7 MEAN QFF PRESSURE IN HPA 1022.4 1022.9 1016.0 1012.6 1009.5 1002.2 1002.1 999.3 1009.9 1020.6 1021.2 1024.7 1013.6 MAX. QFF PRESSURE IN HPA 1032.7 1033.9 1026.8 1018.9 1014.9 1010.8 1005.8 1002.7 1020.5 1031.6 1027.4 1033.0 1033.9 DAY 5 19 4 1 11 3 23 1 30 22 27 20 MIN. QFF PRESSURE IN HPA 1008.9 1009.4 1005.0 1006.9 999.5 994.1 998.9 995.3 1001.9 1011.3 1016.3 1014.0 994.1 DAY 17 8 12 25 29 21 29 12 8 18 15 7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 801.0 802.1 800.9 801.1 800.0 798.4 798.8 797.8 802.8 805.9 804.4 802.3 801.3 MAX. QFE PRESSURE IN HPA 808.6 805.2 807.3 804.4 804.2 802.9 801.5 799.6 806.2 810.0 810.3 806.6 810.3 DAY 4 20 4 14 26 5 23 21 30 9 27 18 MIN. QFE PRESSURE IN HPA 792.6 795.5 792.1 797.3 795.8 794.1 796.3 795.4 797.1 801.1 800.6 797.3 792.1 DAY 29 8 16 26 29 21 16 11 8 19 12 7 MEAN QNH PRESSURE IN HPA 1024.0 1025.3 1023.9 1024.1 1022.7 1020.8 1021.3 1020.0 1026.2 1030.0 1028.1 1025.5 1024.3 MAX. QNH PRESSURE IN HPA 1033.2 1029.1 1031.7 1028.1 1027.9 1026.3 1024.6 1022.3 1030.3 1035.0 1035.3 1030.8 1035.3 DAY 4 20 4 14 26 5 23 21 30 9 27 18 MIN. QNH PRESSURE IN HPA 1013.7 1017.3 1013.1 1019.5 1017.6 1015.6 1018.2 1017.1 1019.2 1024.1 1023.5 1019.5 1013.1 DAY 29 8 16 26 29 21 16 11 8 19 12 7 MEAN QFF PRESSURE IN HPA 1024.0 1024.6 1017.2 1012.3 1009.0 1001.0 1000.6 998.5 1009.5 1020.3 1021.5 1025.4 1013.7 MAX. QFF PRESSURE IN HPA 1034.4 1034.2 1028.1 1018.6 1015.5 1008.7 1004.8 1002.0 1019.2 1030.3 1028.2 1033.9 1034.4 DAY 4 19 2 1 9 3 23 1 30 22 27 21 MIN. QFF PRESSURE IN HPA 1011.4 1012.3 1006.7 1007.8 999.0 993.9 996.9 994.3 1001.2 1011.0 1016.6 1014.6 993.9 DAY 17 8 26 25 29 21 16 11 1 19 13 7 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 800.0 801.2 800.1 800.4 799.3 797.6 798.0 796.8 801.7 804.6 803.1 801.1 800.3 MAX. QFE PRESSURE IN HPA 807.6 804.8 806.3 803.4 803.4 801.7 800.6 798.5 805.2 808.8 808.8 805.8 808.8 DAY 4 20 3 14 26 4 23 19 30 9 26 18 MIN. QFE PRESSURE IN HPA 792.9 795.3 792.2 796.9 795.4 793.2 795.8 794.4 795.7 799.9 799.0 796.4 792.2 DAY 29 8 15 26 30 20 16 11 8 17 15 7 MEAN QNH PRESSURE IN HPA 1022.7 1024.2 1022.8 1023.2 1021.9 1019.8 1020.4 1018.8 1024.8 1028.4 1026.6 1024.2 1023.1 MAX. QNH PRESSURE IN HPA 1032.0 1028.6 1030.4 1026.9 1026.9 1024.8 1023.5 1020.9 1029.1 1033.5 1033.5 1029.8 1033.5 DAY 4 20 3 14 26 4 23 19 30 9 26 18 MIN. QNH PRESSURE IN HPA 1014.1 1017.0 1013.2 1019.0 1017.1 1014.5 1017.6 1015.9 1017.5 1022.6 1021.5 1018.4 1013.2 DAY 29 8 15 26 30 20 16 11 8 17 15 7 MEAN QFF PRESSURE IN HPA 1020.3 1020.9 1014.5 1010.7 1007.7 999.6 999.5 996.1 1006.8 1016.8 1017.9 1021.7 1011.0 MAX. QFF PRESSURE IN HPA 1029.6 1031.3 1024.5 1017.8 1018.1 1006.6 1003.6 1000.0 1016.9 1028.5 1024.8 1029.8 1031.3 DAY 4 19 3 1 9 4 23 19 30 21 26 20 MIN. QFF PRESSURE IN HPA 1011.3 1009.5 1004.3 1006.7 999.3 992.4 996.3 992.3 998.5 1008.4 1013.5 1012.1 992.3 DAY 17 8 12 26 29 21 15 11 8 18 15 7 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 798.5 799.4 798.5 798.8 798.1 796.2 796.8 795.3 800.3 803.1 801.9 799.9 798.9 MAX. QFE PRESSURE IN HPA 806.4 803.1 804.7 801.7 802.0 800.2 799.3 797.6 804.0 807.5 807.4 804.8 807.5 DAY 4 20 3 14 26 4 22 19 30 9 26 18 MIN. QFE PRESSURE IN HPA 792.0 794.5 790.5 796.5 794.5 791.8 794.4 792.8 794.6 798.7 797.2 796.2 790.5 DAY 29 8 15 8 30 20 16 11 8 17 15 9 MEAN QNH PRESSURE IN HPA 1020.9 1022.0 1021.0 1021.3 1020.4 1018.1 1018.8 1017.1 1023.1 1026.6 1025.1 1022.6 1021.4 MAX. QNH PRESSURE IN HPA 1030.6 1026.5 1028.5 1024.8 1025.2 1023.0 1021.9 1019.8 1027.6 1031.9 1031.8 1028.6 1031.9 DAY 4 20 3 14 26 4 22 19 30 9 26 18 MIN. QNH PRESSURE IN HPA 1013.0 1016.0 1011.2 1018.5 1016.0 1012.7 1015.9 1014.0 1016.2 1021.2 1019.3 1018.1 1011.2 DAY 29 8 15 8 30 20 16 11 8 17 15 9 MEAN QFF PRESSURE IN HPA 1018.2 1018.4 1012.4 1008.8 1006.4 998.1 998.2 995.0 1005.5 1015.2 1016.7 1020.4 1009.4 MAX. QFF PRESSURE IN HPA 1027.0 1028.6 1023.1 1014.9 1015.5 1004.7 1001.9 999.0 1015.4 1026.5 1022.5 1028.2 1028.6 DAY 4 19 21 1 9 4 1 19 30 21 26 21 MIN. QFF PRESSURE IN HPA 1010.8 1008.8 1001.5 1004.6 998.3 990.7 994.8 990.6 997.0 1008.4 1011.8 1011.9 990.6 DAY 14 8 12 24 30 20 16 11 8 18 12 7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 799.1 800.0 798.9 799.1 797.8 796.0 796.3 795.1 800.2 803.7 802.7 800.9 799.2 MAX. QFE PRESSURE IN HPA 807.1 803.6 804.4 802.5 801.3 800.0 799.5 797.5 803.8 808.3 807.9 805.8 808.3 DAY 4 18 3 22 26 4 22 19 30 21 27 18 MIN. QFE PRESSURE IN HPA 792.7 795.2 790.9 796.4 794.8 791.5 794.3 792.6 794.7 799.4 797.7 797.6 790.9 DAY 29 8 15 17 19 20 16 11 8 17 15 6 MEAN QNH PRESSURE IN HPA 1021.6 1022.8 1021.4 1021.6 1020.1 1017.9 1018.3 1016.8 1023.0 1027.3 1026.0 1023.9 1021.7 MAX. QNH PRESSURE IN HPA 1031.4 1027.1 1028.1 1025.8 1024.3 1022.8 1022.1 1019.7 1027.4 1032.9 1032.4 1029.8 1032.9 DAY 4 18 3 22 26 4 22 19 30 21 27 18 MIN. QNH PRESSURE IN HPA 1013.8 1016.9 1011.6 1018.4 1016.4 1012.4 1015.8 1013.7 1016.3 1022.0 1019.9 1019.8 1011.6 DAY 29 8 15 17 19 20 16 11 8 17 15 6 MEAN QFF PRESSURE IN HPA 1021.5 1021.7 1014.8 1011.2 1007.5 999.7 999.5 996.6 1007.7 1019.0 1020.2 1024.3 1012.0 MAX. QFF PRESSURE IN HPA 1031.9 1031.9 1025.0 1016.1 1013.3 1007.6 1003.8 1000.6 1018.1 1030.5 1026.9 1031.9 1031.9 DAY 4 19 3 1 9 2 22 19 30 21 27 19 MIN. QFF PRESSURE IN HPA 1012.8 1012.0 1004.7 1006.3 1000.3 992.6 996.5 992.6 999.6 1011.5 1015.0 1016.2 992.6 DAY 28 8 12 25 29 20 27 11 8 19 15 6 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 799.9 801.0 800.1 800.2 799.0 797.0 797.4 796.4 801.4 804.8 803.5 801.5 800.2 MAX. QFE PRESSURE IN HPA 808.3 804.5 806.0 803.7 802.4 800.5 801.3 798.7 805.0 809.3 808.9 806.0 809.3 DAY 4 22 3 22 26 4 22 19 30 21 26 18 MIN. QFE PRESSURE IN HPA 793.4 795.7 791.7 797.3 796.3 791.6 795.2 794.1 795.8 800.0 799.0 797.9 791.6 DAY 16 7 15 17 30 20 8 11 8 17 15 6 MEAN QNH PRESSURE IN HPA 1022.7 1024.0 1022.9 1023.0 1021.5 1019.1 1019.5 1018.4 1024.4 1028.6 1027.0 1024.6 1023.0 MAX. QNH PRESSURE IN HPA 1032.9 1028.2 1030.1 1027.3 1025.7 1023.4 1024.3 1021.2 1028.9 1034.1 1033.6 1030.1 1034.1 DAY 4 22 3 22 26 4 22 19 30 21 26 18 MIN. QNH PRESSURE IN HPA 1014.7 1017.5 1012.6 1019.5 1018.2 1012.5 1016.9 1015.6 1017.6 1022.8 1021.5 1020.2 1012.5 DAY 16 7 15 17 30 20 8 11 8 17 15 6 MEAN QFF PRESSURE IN HPA 1022.7 1023.1 1016.0 1011.1 1007.9 999.3 998.9 996.8 1007.8 1018.9 1020.3 1024.5 1012.3 MAX. QFF PRESSURE IN HPA 1033.7 1032.7 1026.5 1016.7 1013.5 1007.2 1004.4 1000.6 1017.4 1031.0 1027.0 1031.9 1033.7 DAY 4 19 3 1 10 2 22 19 30 21 27 18 MIN. QFF PRESSURE IN HPA 1009.6 1013.0 1005.6 1006.7 1000.4 990.6 995.7 992.5 1000.2 1009.1 1015.6 1015.8 990.6 DAY 16 8 12 25 28 20 15 11 8 17 11 13 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 799.7 800.9 799.9 800.1 799.0 797.4 797.8 796.6 801.7 804.8 803.2 801.2 800.2 MAX. QFE PRESSURE IN HPA 807.9 804.3 806.2 802.7 802.6 800.9 801.1 798.7 805.0 809.0 808.4 805.4 809.0 DAY 4 18 3 22 25 4 22 19 30 21 26 18 MIN. QFE PRESSURE IN HPA 792.1 794.5 790.4 796.3 795.9 792.1 795.6 794.2 796.4 800.0 798.9 796.9 790.4 DAY 16 7 15 25 29 20 15 11 8 17 11 6 MEAN QNH PRESSURE IN HPA 1022.3 1023.8 1022.6 1022.8 1021.6 1019.5 1020.1 1018.6 1024.8 1028.6 1026.6 1024.2 1023.0 MAX. QNH PRESSURE IN HPA 1032.4 1028.0 1030.3 1026.0 1025.9 1023.8 1024.1 1021.2 1028.9 1033.7 1033.0 1029.3 1033.7 DAY 4 18 3 22 25 4 22 19 30 21 26 18 MIN. QNH PRESSURE IN HPA 1013.1 1016.0 1011.0 1018.2 1017.7 1013.1 1017.4 1015.7 1018.4 1022.8 1021.4 1019.0 1011.0 DAY 16 7 15 25 29 20 15 11 8 17 11 6 MEAN QFF PRESSURE IN HPA 1019.9 1020.5 1014.2 1010.1 1007.3 999.3 999.2 996.1 1006.9 1017.1 1018.1 1021.9 1010.9 MAX. QFF PRESSURE IN HPA 1029.6 1031.2 1024.6 1015.9 1015.2 1006.9 1003.7 1000.4 1016.3 1029.3 1023.7 1030.1 1031.2 DAY 4 19 3 1 9 2 22 20 30 21 26 30 MIN. QFF PRESSURE IN HPA 1005.3 1008.6 1003.9 1005.0 999.7 990.8 996.2 992.2 999.3 1007.8 1012.2 1012.0 990.8 DAY 16 7 12 25 28 20 15 11 7 17 11 6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.5 6.2 9.5 15.2 20.1 26.4 28.3 24.5 22.0 15.8 10.1 4.5 15.7 MINIMUN AIR TEMPERATURE (C) 0.0 -0.4 3.1 7.9 12.0 17.5 19.7 16.2 12.6 7.2 3.9 -0.8 8.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 7 0 0 0 0 0 8 DAYS WITH MINIMUM TEMP. <=-4 5 2 3 0 0 0 0 0 0 0 0 9 19 DAYS WITH FREEZING MIN.<= 0 15 17 9 0 0 0 0 0 0 0 0 18 59 TEMPERATURE RECORDS LOWEST(C) -9.2 -5.4 -4.8 1.4 8.2 13.8 17.8 13.0 10.6 3.6 0.4 -6.6 -9.2 DAY 1 7 11 9 5 9 3 13 28 28 16 31 MAXIMUM AIR TEMPERATURE (C) 12.6 14.2 17.2 22.9 27.9 34.8 36.5 32.8 32.2 26.3 18.7 11.6 24.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 9 29 31 28 30 4 0 0 131 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.4 20.0 23.0 27.8 34.4 38.8 39.4 37.5 34.8 32.6 25.0 17.6 39.4 DAY 14 14 22 22 31 29 26 1 5 1 2 1 DIF. BETWEEN (MAX.-MIN.) (C) 12.6 14.6 14.1 15.0 15.9 17.3 16.8 16.6 19.6 19.1 14.8 12.4 15.8 MEAN DAILY TEMP. (MDT) (C) 6.3 6.9 10.1 15.4 20.0 26.2 28.1 24.5 22.4 16.7 11.3 5.4 16.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 15.7 155.0 220.2 108.6 41.8 1.7 0.0 0.0 543.0 HEATING DEG. DAYS(BASE 18 0C) 362.4 302.7 243.6 79.3 7.2 0.0 0.0 0.0 0.0 54.0 202.4 391.0 1642.6 DEWPOINT (MEAN C) -4.6 -10.8 -5.1 -2.8 0.8 1.9 5.1 2.6 -0.9 -3.8 -0.5 -5.3 -1.9 MIXING RATIO (G/KG) 3.55 2.23 3.58 4.03 5.19 5.63 7.20 5.87 4.58 3.79 4.75 3.38 4.48 VAPOUR PRESSURE (HPA) 4.54 2.85 4.57 5.14 6.62 7.15 9.11 7.47 5.86 4.86 6.08 4.32 5.71 SATURATION DEF. (HPA) 4.97 7.22 8.19 13.09 18.17 29.13 31.11 24.84 22.46 14.66 7.00 4.53 15.45 RELATIVE HUMIDITY (MEAN %) 51 33 41 32 30 22 24 25 23 29 51 52 34 RELATIVE HUMIDITY (MAX. %) 68 49 64 52 46 32 34 36 33 46 68 71 50 RELATIVE HUMIDITY (MIN. %) 30 16 21 17 18 14 16 16 14 14 32 32 20 RELATIVE HUMIDITY (MEAN% 03UTC) 65 45 58 50 44 32 34 35 31 38 66 68 47 RELATIVE HUMIDITY (MEAN% 09UTC) 37 20 25 21 20 16 19 18 16 17 38 36 24 RELATIVE HUMIDITY (MEAN% 15UTC) 46 27 29 22 23 16 19 20 18 25 47 46 28 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 8.2 6.4 21.7 0.1 1.5 0.0 0.1 0.0 0.0 0.0 8.7 16.0 62.7 DAYS WITH PRECIPITATION >=10 0 0 1 0 0 0 0 0 0 0 0 1 2 DAYS WITH PRECIPITATION >= 5 1 1 1 0 0 0 0 0 0 0 0 1 4 DAYS WITH PRECIPITATION >= 1 1 1 4 0 0 0 0 0 0 0 3 2 11 DAYS WITH PRECIPITATION 3 3 10 3 5 0 1 1 0 0 6 8 40 GREATEST DAILY PRECIPITATION 7.1 6.2 13.0 0.1 0.6 0.0 0.1 0.0 0.0 0.0 3.5 12.0 13.0 DAY 3 1 30 3 9 ** 23 ** ** ** 20 19 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 1 0 1 0 0 0 0 0 0 0 0 1 3 DAYS WITH DUST 1 5 1 1 3 1 1 1 0 1 0 1 16 WIND DIRECTION (PREVAILING) 270 270 270 270 360 360 360 45 360 360 270 270 360 PREVAILING WIND SPEED(KNOTS) 8.6 12.0 10.0 8.9 6.1 5.7 6.8 6.5 5.3 5.0 7.0 9.4 5.8 PREVAILING WIND PERCENT 12.5 19.2 15.8 15.8 10.1 20.4 15.7 17.7 11.7 11.7 3.3 12.1 10.5 CALMS PERCENT OF WIND 64.5 45.5 55.9 53.8 61.3 47.9 46.4 54.0 67.1 69.8 85.4 65.7 59.8 NO. OF WIND OBSERVATION 248 224 247 240 248 240 248 248 240 248 240 248 2919 VECTOR WIND DIRECTION (MEAN) 292 268 289 287 330 346 358 30 354 319 303 272 306 VECTOR WIND MAGNITUDE(KNOTS) 1.6 4.0 2.6 2.3 1.0 1.2 1.5 1.8 1.2 1.4 0.2 1.7 1.3 WIND STEADINESES (MEAN %) 69.6 72.7 72.2 65.7 37.0 36.4 41.7 62.1 63.2 73.7 22.2 60.7 44.8 WIND SPEED (MEAN KNOTS) 2.3 5.5 3.6 3.5 2.7 3.3 3.6 2.9 1.9 1.9 0.9 2.8 2.9 FASTEST WIND DIRECTION 270 270 280 300 320 20 350 330 70 290 280 240 240 FASTEST WIND SPEED (KNOTS) 27 29 29 17 17 19 16 16 14 21 14 43 43 DAY 22 21 24 6 2 11 16 12 8 11 11 18 DAYS WITH SKY CLEAR (0-2)/8 13 22 13 15 12 23 26 21 27 29 16 17 234 DAYS WITH P.CLOUDY (3-6)/8 15 4 11 13 11 7 5 10 3 2 11 11 103 DAYS WITH CLOUDY (7-8)/8 3 2 7 2 8 0 0 0 0 0 3 3 28 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 0 0 0 0 1 1 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 800.4 796.9 799.9 799.3 800.2 797.1 796.6 799.7 801.4 803.3 803.9 801.1 800.0 MAX. QFE PRESSURE IN HPA 806.8 804.0 806.3 804.9 806.0 801.3 800.2 805.0 807.1 807.5 808.6 808.4 808.6 DAY-HOUR 14- 6 12- 6 16-18 21- 6 12- 6 6- 6 16- 6 13- 6 30- 6 27- 6 17- 6 10- 6 MIN. QFE PRESSURE IN HPA 793.1 788.3 792.4 794.1 796.7 791.9 792.0 794.8 795.6 797.7 798.3 790.7 788.3 DAY-HOUR 2-12 26-12 3-12 7-15 21-15 11-15 26-15 8-15 6-15 11-12 7-12 18-18 MEAN QNH PRESSURE IN HPA 1023.2 1018.9 1022.7 1021.8 1023.0 1019.2 1018.7 1022.3 1024.5 1026.7 1027.5 1024.0 1022.7 MAX. QNH PRESSURE IN HPA 1031.0 1027.6 1030.4 1028.7 1030.1 1024.3 1023.0 1028.9 1031.4 1031.9 1033.2 1033.0 1033.2 DAY-HOUR 14- 6 12- 6 16-18 21- 6 12- 6 6- 6 16- 6 13- 6 30- 6 27- 6 17- 6 10- 6 MIN. QNH PRESSURE IN HPA 1014.3 1008.5 1013.5 1015.6 1018.7 1012.9 1013.0 1016.4 1017.4 1019.9 1020.7 1011.4 1008.5 DAY-HOUR 2-12 26-12 3-12 7-15 21-15 11-15 26-15 8-15 6-15 11-12 7-12 18-18 MEAN QFF PRESSURE IN HPA 1020.0 1015.0 1015.9 1010.3 1007.5 998.7 996.5 1003.2 1007.6 1014.8 1020.2 1021.6 1010.9 MAX. QFF PRESSURE IN HPA 1028.6 1025.3 1031.2 1017.2 1018.0 1005.2 1002.4 1013.1 1016.3 1023.6 1028.7 1033.8 1033.8 DAY-HOUR 25- 6 19- 6 5-18 9- 3 12-12 13- 3 15- 3 13- 3 22- 6 31-18 17- 6 10- 6 MIN. QFF PRESSURE IN HPA 1011.6 999.2 1001.8 1003.7 1000.4 992.2 989.1 994.5 998.6 1005.5 1010.9 1002.0 989.1 DAY-HOUR 22- 0 26-12 24-12 24-12 31-12 30-12 26-12 5-12 6-12 4-12 7-12 18-18 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 800.2 796.9 799.5 799.1 800.0 797.1 796.7 799.7 801.4 803.2 803.9 801.0 799.9 MAX. QFE PRESSURE IN HPA 805.1 802.0 805.7 803.6 803.4 799.8 799.1 803.5 805.5 805.9 806.9 806.6 806.9 DAY 14 12 6 22 13 7 16 13 23 26 1 10 MIN. QFE PRESSURE IN HPA 795.0 790.9 793.6 795.6 797.0 794.6 794.0 796.3 797.4 799.2 800.7 792.6 790.9 DAY 2 17 25 8 4 20 26 1 6 11 11 19 MEAN QNH PRESSURE IN HPA 1023.0 1019.0 1022.2 1021.6 1022.7 1019.3 1018.7 1022.4 1024.4 1026.7 1027.5 1024.0 1022.6 MAX. QNH PRESSURE IN HPA 1029.0 1025.2 1029.7 1027.1 1026.9 1022.5 1021.7 1027.0 1029.5 1030.0 1031.2 1030.8 1031.2 DAY 14 12 6 22 13 7 16 13 23 26 1 10 MIN. QNH PRESSURE IN HPA 1016.6 1011.6 1014.9 1017.4 1019.1 1016.2 1015.4 1018.2 1019.6 1021.8 1023.6 1013.7 1011.6 DAY 2 17 25 8 4 20 26 1 6 11 11 19 MEAN QFF PRESSURE IN HPA 1018.6 1013.9 1015.0 1009.4 1007.1 998.5 996.3 1002.8 1006.9 1013.5 1019.1 1020.5 1010.1 MAX. QFF PRESSURE IN HPA 1025.4 1021.1 1028.8 1015.3 1016.0 1002.4 999.9 1010.3 1013.1 1018.5 1024.0 1030.4 1030.4 DAY 25 19 6 9 13 13 16 13 23 26 18 31 MIN. QFF PRESSURE IN HPA 1011.6 1003.3 1002.8 1004.8 1002.5 993.8 991.4 996.1 1000.3 1006.7 1012.1 1005.5 991.4 DAY 22 26 25 24 31 30 26 1 7 11 11 19 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 800.5 797.1 800.2 799.8 800.8 798.0 797.5 800.5 802.2 803.9 804.4 801.3 800.5 MAX. QFE PRESSURE IN HPA 805.4 802.8 805.1 804.5 804.6 800.4 799.9 804.1 805.9 806.6 807.4 807.0 807.4 DAY 13 12 6 22 13 6 16 14 30 27 1 10 MIN. QFE PRESSURE IN HPA 794.7 790.8 794.5 795.6 798.1 795.8 794.9 797.4 798.3 799.4 800.9 794.2 790.8 DAY 2 17 25 8 4 20 26 8 6 11 11 19 MEAN QNH PRESSURE IN HPA 1023.4 1019.2 1023.0 1022.5 1023.8 1020.4 1019.7 1023.3 1025.5 1027.6 1028.1 1024.3 1023.4 MAX. QNH PRESSURE IN HPA 1029.3 1026.2 1029.0 1028.2 1028.4 1023.2 1022.6 1027.8 1030.0 1030.8 1031.8 1031.3 1031.8 DAY 13 12 6 22 13 6 16 14 30 27 1 10 MIN. QNH PRESSURE IN HPA 1016.3 1011.5 1016.0 1017.4 1020.4 1017.6 1016.5 1019.6 1020.7 1022.0 1023.8 1015.7 1011.5 DAY 2 17 25 8 4 20 26 8 6 11 11 19 MEAN QFF PRESSURE IN HPA 1021.4 1016.6 1017.4 1012.3 1009.9 1001.3 999.1 1006.0 1010.7 1017.9 1022.6 1023.4 1013.2 MAX. QFF PRESSURE IN HPA 1027.9 1025.1 1031.0 1017.2 1017.9 1005.2 1002.4 1013.1 1016.0 1023.5 1028.0 1033.7 1033.7 DAY 25 19 6 9 13 13 15 13 22 26 17 10 MIN. QFF PRESSURE IN HPA 1013.8 1003.8 1005.8 1006.0 1005.3 996.8 994.4 999.7 1004.7 1009.9 1015.7 1009.3 994.4 DAY 22 26 25 24 31 30 26 1 6 11 11 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 801.6 797.9 801.1 800.5 801.4 798.4 797.8 800.9 802.9 804.7 805.3 802.4 801.3 MAX. QFE PRESSURE IN HPA 806.8 804.0 805.6 804.9 806.0 801.3 800.2 805.0 807.1 807.5 808.6 808.4 808.6 DAY 14 12 6 21 12 6 16 13 30 27 17 10 MIN. QFE PRESSURE IN HPA 796.1 792.0 795.2 796.5 798.4 796.0 794.4 797.3 798.9 800.3 801.9 794.6 792.0 DAY 2 26 24 8 5 20 26 8 6 11 7 19 MEAN QNH PRESSURE IN HPA 1024.7 1020.2 1024.1 1023.4 1024.5 1020.8 1020.1 1023.8 1026.3 1028.5 1029.2 1025.7 1024.3 MAX. QNH PRESSURE IN HPA 1031.0 1027.6 1029.6 1028.7 1030.1 1024.3 1023.0 1028.9 1031.4 1031.9 1033.2 1033.0 1033.2 DAY 14 12 6 21 12 6 16 13 30 27 17 10 MIN. QNH PRESSURE IN HPA 1018.0 1013.0 1016.9 1018.5 1020.8 1017.9 1015.9 1019.5 1021.4 1023.1 1025.1 1016.2 1013.0 DAY 2 26 24 8 5 20 26 8 6 11 7 19 MEAN QFF PRESSURE IN HPA 1022.5 1017.2 1017.9 1011.8 1008.6 1000.2 997.7 1004.4 1009.3 1016.9 1022.4 1023.9 1012.7 MAX. QFF PRESSURE IN HPA 1028.6 1025.3 1030.9 1015.9 1017.2 1003.8 1000.9 1011.9 1016.3 1023.1 1028.7 1033.8 1033.8 DAY 25 19 6 12 13 9 16 13 22 26 17 10 MIN. QFF PRESSURE IN HPA 1015.7 1003.9 1004.6 1008.4 1003.2 995.9 992.0 998.7 1003.1 1009.1 1017.7 1009.6 992.0 DAY 22 26 24 20 31 30 26 4 7 11 11 19 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 800.5 797.0 800.2 799.5 800.5 797.5 796.9 799.8 801.7 803.1 803.8 800.8 800.1 MAX. QFE PRESSURE IN HPA 805.8 802.7 805.2 804.1 805.3 800.5 799.2 803.5 805.6 805.7 806.7 806.9 806.9 DAY 14 12 16 21 12 6 16 13 30 26 17 10 MIN. QFE PRESSURE IN HPA 794.3 789.8 794.4 796.8 797.8 795.1 793.2 796.3 797.2 798.9 799.8 793.0 789.8 DAY 2 26 24 7 5 19 26 8 6 11 7 19 MEAN QNH PRESSURE IN HPA 1023.4 1019.1 1022.9 1022.2 1023.3 1019.7 1019.0 1022.5 1024.8 1026.6 1027.4 1023.7 1022.9 MAX. QNH PRESSURE IN HPA 1029.8 1026.0 1029.1 1027.8 1029.2 1023.4 1021.8 1027.0 1029.6 1029.7 1030.9 1031.2 1031.2 DAY 14 12 16 21 12 6 16 13 30 26 17 10 MIN. QNH PRESSURE IN HPA 1015.8 1010.3 1015.9 1018.8 1020.1 1016.8 1014.5 1018.2 1019.3 1021.4 1022.5 1014.2 1010.3 DAY 2 26 24 7 5 19 26 8 6 11 7 19 MEAN QFF PRESSURE IN HPA 1019.2 1014.0 1015.2 1009.9 1007.0 998.3 995.9 1002.3 1006.6 1013.2 1018.8 1019.9 1010.0 MAX. QFF PRESSURE IN HPA 1024.6 1020.1 1027.6 1013.9 1015.6 1002.1 999.0 1009.2 1012.0 1018.3 1023.7 1029.2 1029.2 DAY 4 19 5 12 13 5 16 13 22 26 17 9 MIN. QFF PRESSURE IN HPA 1013.8 1000.4 1003.1 1005.9 1002.2 994.7 989.9 996.0 1000.0 1007.3 1012.4 1007.4 989.9 DAY 22 26 24 24 31 30 26 1 6 4 7 19 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 799.3 795.5 798.7 798.0 799.2 796.0 795.6 798.4 800.2 801.6 802.5 799.9 798.8 MAX. QFE PRESSURE IN HPA 804.2 800.6 804.4 802.9 805.8 799.0 797.8 802.0 803.9 804.1 805.8 806.0 806.0 DAY 13 12 16 21 12 5 12 30 30 31 17 9 MIN. QFE PRESSURE IN HPA 793.1 788.3 792.4 794.4 796.8 792.8 792.1 795.0 795.8 797.7 798.3 792.3 788.3 DAY 2 26 3 7 5 11 26 5 6 11 7 19 MEAN QNH PRESSURE IN HPA 1021.9 1017.3 1021.2 1020.3 1021.8 1017.9 1017.4 1020.8 1023.0 1024.8 1025.8 1022.6 1021.2 MAX. QNH PRESSURE IN HPA 1027.9 1023.5 1028.1 1026.3 1029.8 1021.5 1020.1 1025.2 1027.5 1027.8 1029.8 1030.1 1030.1 DAY 13 12 16 21 12 5 12 30 30 31 17 9 MIN. QNH PRESSURE IN HPA 1014.3 1008.5 1013.5 1015.9 1018.8 1014.0 1013.1 1016.6 1017.6 1019.9 1020.7 1013.4 1008.5 DAY 2 26 3 7 5 11 26 5 6 11 7 19 MEAN QFF PRESSURE IN HPA 1017.4 1012.1 1013.7 1008.1 1006.0 997.0 994.8 1001.3 1005.2 1011.6 1017.3 1019.2 1008.6 MAX. QFF PRESSURE IN HPA 1023.1 1018.1 1024.9 1012.9 1018.0 1001.5 997.9 1007.8 1011.1 1017.4 1022.7 1028.3 1028.3 DAY 4 19 5 17 12 14 16 13 22 31 17 9 MIN. QFF PRESSURE IN HPA 1011.8 999.2 1001.8 1003.7 1000.4 992.2 989.1 994.5 998.6 1005.5 1010.9 1007.1 989.1 DAY 2 26 24 24 31 30 26 5 6 4 7 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 800.1 796.2 799.2 798.1 799.1 795.6 795.3 798.3 800.2 802.3 803.4 800.8 799.1 MAX. QFE PRESSURE IN HPA 805.5 800.7 804.6 802.9 804.1 798.4 797.7 801.7 804.7 805.6 806.3 806.9 806.9 DAY 13 12 16 21 13 6 15 13 22 31 17 9 MIN. QFE PRESSURE IN HPA 794.3 788.6 793.5 794.1 796.7 791.9 792.0 794.8 795.6 798.4 798.8 793.6 788.6 DAY 2 26 3 7 21 11 26 8 6 11 7 18 MEAN QNH PRESSURE IN HPA 1022.8 1018.1 1021.8 1020.4 1021.7 1017.4 1017.0 1020.7 1023.0 1025.6 1026.9 1023.7 1021.6 MAX. QNH PRESSURE IN HPA 1029.5 1023.6 1028.4 1026.3 1027.8 1020.8 1019.9 1024.8 1028.5 1029.6 1030.4 1031.2 1031.2 DAY 13 12 16 21 13 6 15 13 22 31 17 9 MIN. QNH PRESSURE IN HPA 1015.8 1008.8 1014.8 1015.6 1018.7 1012.9 1013.0 1016.4 1017.4 1020.8 1021.3 1014.9 1008.8 DAY 2 26 3 7 21 11 26 8 6 11 7 18 MEAN QFF PRESSURE IN HPA 1020.6 1015.5 1016.2 1010.1 1007.6 998.1 996.3 1003.3 1008.0 1015.9 1021.2 1022.9 1011.3 MAX. QFF PRESSURE IN HPA 1027.5 1022.3 1029.4 1014.3 1017.2 1001.9 999.8 1009.7 1014.7 1023.4 1026.8 1033.4 1033.4 DAY 4 19 5 8 13 14 15 13 22 31 17 9 MIN. QFF PRESSURE IN HPA 1012.8 1001.3 1004.8 1005.2 1001.0 992.7 991.3 997.0 1000.7 1009.3 1014.7 1007.1 991.3 DAY 19 26 24 24 31 30 26 5 6 4 7 18 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 800.7 797.2 800.4 799.5 800.3 796.9 796.6 799.8 801.5 803.6 804.1 801.3 800.2 MAX. QFE PRESSURE IN HPA 805.9 801.7 806.3 804.2 805.0 799.9 799.1 803.5 805.9 807.0 807.1 807.5 807.5 DAY 13 11 16 21 12 6 15 13 22 31 17 9 MIN. QFE PRESSURE IN HPA 795.5 790.1 794.2 795.7 798.3 793.4 793.5 796.7 798.0 799.8 800.5 790.7 790.1 DAY 2 26 24 7 28 11 26 8 5 11 7 18 MEAN QNH PRESSURE IN HPA 1023.6 1019.3 1023.2 1022.2 1023.1 1019.0 1018.6 1022.5 1024.6 1027.1 1027.8 1024.4 1023.0 MAX. QNH PRESSURE IN HPA 1030.0 1024.8 1030.4 1027.9 1028.9 1022.6 1021.7 1027.0 1030.0 1031.3 1031.4 1031.9 1031.9 DAY 13 11 16 21 12 6 15 13 22 31 17 9 MIN. QNH PRESSURE IN HPA 1017.3 1010.7 1015.7 1017.5 1020.7 1014.7 1014.8 1018.7 1020.3 1022.5 1023.4 1011.4 1010.7 DAY 2 26 24 7 28 11 26 8 5 11 7 18 MEAN QFF PRESSURE IN HPA 1021.2 1016.3 1016.9 1010.6 1007.2 998.3 996.3 1003.1 1007.6 1015.6 1021.0 1022.7 1011.4 MAX. QFF PRESSURE IN HPA 1028.4 1023.6 1031.2 1016.0 1016.2 1002.5 999.7 1009.8 1014.1 1023.6 1026.7 1032.1 1032.1 DAY 4 7 5 17 12 12 15 13 30 31 17 9 MIN. QFF PRESSURE IN HPA 1013.2 1003.5 1003.4 1006.9 1001.1 994.6 990.7 997.1 1001.6 1009.4 1015.0 1002.0 990.7 DAY 2 26 24 23 30 29 26 4 6 4 7 18 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 800.4 797.2 800.1 799.7 800.4 797.2 796.9 800.0 801.6 803.5 804.0 801.1 800.2 MAX. QFE PRESSURE IN HPA 805.3 802.0 806.1 804.2 804.4 800.0 799.5 803.8 805.9 807.2 807.1 807.2 807.2 DAY 13 10 5 21 12 6 15 13 22 31 17 9 MIN. QFE PRESSURE IN HPA 796.3 791.4 793.6 796.4 798.2 794.8 793.6 796.7 797.8 800.1 800.4 792.2 791.4 DAY 1 16 24 7 1 19 26 8 5 11 10 18 MEAN QNH PRESSURE IN HPA 1023.3 1019.4 1022.9 1022.3 1023.2 1019.3 1018.9 1022.8 1024.7 1027.1 1027.6 1024.1 1023.0 MAX. QNH PRESSURE IN HPA 1029.2 1025.2 1030.2 1027.9 1028.1 1022.8 1022.1 1027.4 1030.0 1031.5 1031.4 1031.5 1031.5 DAY 13 10 5 21 12 6 15 13 22 31 17 9 MIN. QNH PRESSURE IN HPA 1018.2 1012.3 1014.9 1018.4 1020.6 1016.4 1014.9 1018.7 1020.1 1022.9 1023.2 1013.2 1012.3 DAY 1 16 24 7 1 19 26 8 5 11 10 18 MEAN QFF PRESSURE IN HPA 1019.0 1014.3 1015.0 1009.9 1006.8 998.0 996.0 1002.8 1006.7 1013.9 1019.1 1020.5 1010.2 MAX. QFF PRESSURE IN HPA 1026.9 1021.3 1030.0 1016.0 1014.9 1002.7 999.7 1009.5 1012.8 1022.2 1024.1 1029.7 1030.0 DAY 4 18 5 8 12 12 15 13 22 31 17 9 MIN. QFF PRESSURE IN HPA 1013.3 1003.9 1002.0 1005.7 1001.7 994.6 990.0 997.0 999.9 1007.7 1012.3 1002.4 990.0 DAY 21 25 24 23 31 29 26 8 6 3 10 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.8 4.4 6.3 12.5 18.2 23.4 25.2 23.6 20.9 17.9 9.0 2.3 14.0 MINIMUN AIR TEMPERATURE (C) -2.4 -2.1 0.3 6.4 10.3 13.6 15.8 13.6 8.3 6.5 1.1 -3.1 5.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 6 9 2 0 0 0 0 0 0 0 4 11 32 DAYS WITH FREEZING MIN.<= 0 26 21 15 0 0 0 0 0 0 0 12 25 99 TEMPERATURE RECORDS LOWEST(C) -9.0 -6.8 -4.8 2.0 3.6 9.6 12.6 9.4 5.0 1.8 -7.6 -11.0 -11.0 DAY 21 24 17 2 1 10 13 12 10 27 16 13 MAXIMUM AIR TEMPERATURE (C) 12.0 12.1 12.4 18.7 25.3 31.3 32.1 30.3 26.7 23.8 14.0 6.7 20.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 2 17 30 19 1 0 0 0 69 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 4 4 TEMPERATURE RECORDS HIGHEST(C) 15.6 17.4 17.4 24.0 30.8 36.6 34.6 33.0 30.6 28.6 20.0 14.2 36.6 DAY 15 21 4 19 25 25 1 17 28 7 1 30 DIF. BETWEEN (MAX.-MIN.) (C) 14.4 14.2 12.1 12.3 15.0 17.7 16.3 16.7 18.4 17.3 12.9 9.8 14.8 MEAN DAILY TEMP. (MDT) (C) 4.8 5.0 6.4 12.6 17.8 22.5 23.9 21.9 17.5 15.1 7.5 1.8 13.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.1 55.4 91.3 42.5 0.0 0.0 0.0 0.0 191.3 HEATING DEG. DAYS(BASE 18 0C) 409.1 363.1 360.1 163.3 40.1 0.2 0.0 0.5 27.6 93.1 314.6 503.4 2275.1 DEWPOINT (MEAN C) -6.9 -6.8 -3.1 3.3 4.5 0.9 2.2 -0.3 -5.0 -2.5 -3.2 -6.5 -1.9 MIXING RATIO (G/KG) 2.94 2.99 4.05 6.26 6.78 5.46 5.98 4.99 3.47 4.03 4.06 3.10 4.51 VAPOUR PRESSURE (HPA) 3.76 3.82 5.14 7.94 8.61 6.91 7.58 6.34 4.44 5.17 5.18 3.96 5.74 SATURATION DEF. (HPA) 4.74 5.06 4.87 7.04 13.34 23.76 25.77 24.32 21.71 16.74 6.95 3.64 13.16 RELATIVE HUMIDITY (MEAN %) 49 48 57 58 44 25 25 23 19 27 48 56 40 RELATIVE HUMIDITY (MAX. %) 68 70 81 81 66 39 35 37 31 46 69 69 58 RELATIVE HUMIDITY (MIN. %) 27 27 36 35 28 15 17 15 13 18 32 43 26 RELATIVE HUMIDITY (MEAN% 03UTC) 64 64 72 75 60 37 34 36 31 46 66 69 55 RELATIVE HUMIDITY (MEAN% 09UTC) 32 33 43 39 30 19 19 17 14 20 35 48 29 RELATIVE HUMIDITY (MEAN% 15UTC) 45 40 48 50 37 17 19 17 16 23 50 58 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 1.2 4.1 48.5 31.6 31.2 0.2 0.0 5.8 0.0 0.0 34.2 125.8 282.6 DAYS WITH PRECIPITATION >=10 0 0 1 0 1 0 0 0 0 0 1 3 6 DAYS WITH PRECIPITATION >= 5 0 0 3 2 1 0 0 0 0 0 2 6 14 DAYS WITH PRECIPITATION >= 1 1 2 6 9 5 0 0 2 0 0 4 8 37 DAYS WITH PRECIPITATION 3 5 13 17 9 1 0 3 1 0 11 11 74 GREATEST DAILY PRECIPITATION 1.0 3.0 21.0 7.0 22.0 0.2 0.0 3.0 0.0 0.0 21.0 57.0 57.0 DAY 26 15 26 7 4 9 ** 7 ** ** 23 2 DAY WITH THUNDER STORM 0 0 0 5 3 1 0 2 0 0 1 0 12 DAYS WITH SNOW OR SLEET 1 2 2 0 0 0 0 0 0 0 0 6 11 DAYS WITH DUST 0 0 1 1 4 3 3 3 0 0 1 2 18 WIND DIRECTION (PREVAILING) 270 270 270 315 270 315 360 360 360 315 225 360 360 PREVAILING WIND SPEED(KNOTS) 9.5 7.7 10.5 6.6 11.8 6.8 12.2 12.1 10.2 5.7 14.6 9.3 10.1 PREVAILING WIND PERCENT 9.3 13.1 18.5 15.4 16.1 16.7 36.3 36.3 35.3 21.3 12.7 16.8 17.5 CALMS PERCENT OF WIND 76.6 57.5 37.1 42.1 40.7 33.8 23.8 32.8 29.3 37.4 48.0 46.5 42.4 NO. OF WIND OBSERVATION 248 214 248 240 248 240 248 204 150 155 150 155 2500 VECTOR WIND DIRECTION (MEAN) 280 278 294 283 259 306 7 2 357 332 227 272 317 VECTOR WIND MAGNITUDE(KNOTS) 1.3 1.6 2.8 2.1 3.8 2.8 6.3 5.8 5.0 2.5 3.1 2.7 2.3 WIND STEADINESES (MEAN %) 76.5 55.2 43.7 39.6 55.1 47.5 84.0 82.9 78.1 54.3 57.4 45.8 41.8 WIND SPEED (MEAN KNOTS) 1.7 2.9 6.4 5.3 6.9 5.9 7.5 7.0 6.4 4.6 5.4 5.9 5.5 FASTEST WIND DIRECTION 250 190 270 230 150 360 10 360 20 20 210 270 150 FASTEST WIND SPEED (KNOTS) 21 23 35 35 51 39 33 39 23 19 29 35 51 DAY 20 25 25 8 4 9 21 25 8 7 8 30 DAYS WITH SKY CLEAR (0-2)/8 22 15 8 2 9 28 26 24 29 24 13 17 217 DAYS WITH P.CLOUDY (3-6)/8 5 10 20 19 18 2 5 7 1 7 10 6 110 DAYS WITH CLOUDY (7-8)/8 4 3 3 9 4 0 0 0 0 0 7 8 38 DAYS WITH VISIBILITY =< 2 KM 0 0 5 0 0 0 0 0 0 0 1 3 9 DURATION OF SUNSHINE HOURS ****** ****** 216.0 199.3 279.1 356.7 358.0 328.9 325.4 293.2 220.9 208.2 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 800.9 797.6 795.4 797.7 799.2 794.4 796.9 797.9 801.5 802.6 799.4 798.7 798.5 MAX. QFE PRESSURE IN HPA 807.7 803.6 803.4 804.4 804.1 802.4 800.7 802.0 806.8 807.5 805.0 806.4 807.7 DAY-HOUR 10- 6 20- 6 27-18 15- 6 20- 6 2- 6 31- 6 24- 6 22- 6 14- 6 16- 6 7- 6 MIN. QFE PRESSURE IN HPA 787.4 792.0 788.4 793.2 793.4 789.2 792.0 792.1 797.6 798.2 794.1 790.0 787.4 DAY-HOUR 20-12 1-12 8- 0 29-12 11-12 20-12 21-15 5-15 30-12 1-12 7-12 20-12 MEAN QNH PRESSURE IN HPA 1023.9 1019.9 1017.2 1019.9 1021.8 1015.9 1019.0 1020.1 1024.6 1025.9 1022.0 1021.2 1020.9 MAX. QNH PRESSURE IN HPA 1032.2 1027.1 1026.9 1028.1 1027.8 1025.7 1023.6 1025.2 1031.0 1031.9 1028.9 1030.6 1032.2 DAY-HOUR 10- 6 20- 6 27-18 15- 6 20- 6 2- 6 31- 6 24- 6 22- 6 14- 6 16- 6 7- 6 MIN. QNH PRESSURE IN HPA 1007.4 1013.0 1008.6 1014.5 1014.7 1009.6 1013.0 1013.1 1019.8 1020.6 1015.6 1010.5 1007.4 DAY-HOUR 20-12 1-12 8- 0 29-12 11-12 20-12 21-15 5-15 30-12 1-12 7-12 20-12 MEAN QFF PRESSURE IN HPA 1022.2 1017.4 1012.8 1010.1 1007.6 997.5 999.3 1002.2 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1035.9 1029.1 1024.3 1018.1 1014.1 1010.0 1005.6 1007.9 ****** ****** ****** ****** ****** DAY-HOUR 24- 3 20- 3 27- 6 15- 3 6- 6 2- 3 16- 3 28- 3 **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA 1004.8 1006.8 1003.1 1002.6 1002.0 988.6 991.6 994.0 ****** ****** ****** ****** ****** DAY-HOUR 20-12 25- 0 8- 0 19-12 31-12 28-12 21-15 6-12 **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 801.1 797.4 795.2 797.4 798.9 794.5 796.7 797.4 ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 805.5 801.8 802.3 801.7 802.6 801.0 799.2 799.8 ****** ****** ****** ****** ****** DAY 3 20 28 5 19 2 4 1 ** ** ** ** MIN. QFE PRESSURE IN HPA 791.6 793.5 788.4 793.8 794.5 790.3 793.0 794.6 ****** ****** ****** ****** ****** DAY 20 10 8 11 5 21 21 5 ** ** ** ** MEAN QNH PRESSURE IN HPA 1024.0 1019.6 1016.9 1019.6 1021.4 1016.0 1018.8 1019.6 ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1029.5 1025.0 1025.6 1024.8 1025.9 1024.0 1021.8 1022.5 ****** ****** ****** ****** ****** DAY 3 20 28 5 19 2 4 1 ** ** ** ** MIN. QNH PRESSURE IN HPA 1012.5 1014.8 1008.6 1015.2 1016.0 1010.9 1014.2 1016.2 ****** ****** ****** ****** ****** DAY 20 10 8 11 5 21 21 5 ** ** ** ** MEAN QFF PRESSURE IN HPA 1021.1 1016.3 1012.0 1009.6 1007.3 998.0 999.5 1002.0 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1031.0 1026.1 1022.1 1015.6 1012.3 1009.0 1003.6 1004.9 ****** ****** ****** ****** ****** DAY 24 20 28 5 19 2 16 1 ** ** ** ** MIN. QFF PRESSURE IN HPA 1007.3 1006.8 1003.1 1004.0 1002.9 991.2 993.2 997.5 ****** ****** ****** ****** ****** DAY 20 25 8 20 16 28 21 6 ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 801.4 797.9 795.8 797.9 799.6 795.3 797.7 798.8 802.2 803.4 799.7 798.7 799.0 MAX. QFE PRESSURE IN HPA 806.0 802.8 802.7 803.0 803.4 801.8 800.3 801.3 806.0 806.6 803.6 805.7 806.6 DAY 3 20 28 15 20 2 5 24 22 14 15 7 MIN. QFE PRESSURE IN HPA 791.6 793.2 788.9 795.1 796.0 791.4 793.9 794.9 799.3 800.3 795.6 792.7 788.9 DAY 20 10 8 11 5 21 21 5 6 1 7 20 MEAN QNH PRESSURE IN HPA 1024.4 1020.2 1017.6 1020.2 1022.2 1017.0 1019.9 1021.3 1025.5 1026.9 1022.4 1021.2 1021.6 MAX. QNH PRESSURE IN HPA 1030.1 1026.2 1026.0 1026.4 1026.9 1025.0 1023.1 1024.3 1030.1 1030.8 1027.1 1029.7 1030.8 DAY 3 20 28 15 20 2 5 24 22 14 15 7 MIN. QNH PRESSURE IN HPA 1012.5 1014.5 1009.2 1016.8 1017.9 1012.3 1015.3 1016.5 1021.9 1023.1 1017.4 1013.8 1009.2 DAY 20 10 8 11 5 21 21 5 6 1 7 20 MEAN QFF PRESSURE IN HPA 1024.5 1019.3 1014.2 1011.4 1009.0 999.3 1001.3 1004.5 1013.1 1016.7 1018.6 1022.8 1012.9 MAX. QFF PRESSURE IN HPA 1035.9 1029.1 1024.0 1018.1 1013.8 1010.0 1005.6 1007.9 1017.6 1021.3 1030.0 1034.3 1035.9 DAY 24 20 28 15 6 2 16 28 23 20 15 7 MIN. QFF PRESSURE IN HPA 1010.3 1009.4 1004.6 1006.8 1003.7 992.1 994.2 998.9 1009.9 1011.8 1010.5 1008.8 992.1 DAY 20 25 8 20 31 28 21 5 6 1 30 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 802.5 799.0 796.7 798.7 800.2 795.5 798.0 799.4 803.0 804.1 800.7 799.9 799.8 MAX. QFE PRESSURE IN HPA 807.7 803.6 803.2 804.4 804.1 802.4 800.7 802.0 806.8 807.5 805.0 806.4 807.7 DAY 10 20 28 15 20 2 31 24 22 14 16 7 MIN. QFE PRESSURE IN HPA 791.3 794.5 790.5 795.1 796.4 791.5 794.4 795.5 800.1 801.3 796.4 792.8 790.5 DAY 20 16 8 30 11 21 21 5 6 1 7 20 MEAN QNH PRESSURE IN HPA 1025.7 1021.5 1018.8 1021.1 1023.0 1017.2 1020.3 1022.0 1026.4 1027.8 1023.6 1022.6 1022.5 MAX. QNH PRESSURE IN HPA 1032.2 1027.1 1026.7 1028.1 1027.8 1025.7 1023.6 1025.2 1031.0 1031.9 1028.9 1030.6 1032.2 DAY 10 20 28 15 20 2 31 24 22 14 16 7 MIN. QNH PRESSURE IN HPA 1012.1 1016.0 1011.2 1016.8 1018.4 1012.4 1015.9 1017.3 1022.9 1024.3 1018.4 1014.0 1011.2 DAY 20 16 8 30 11 21 21 5 6 1 7 20 MEAN QFF PRESSURE IN HPA 1024.9 1019.5 1014.6 1011.3 1008.5 998.3 999.8 1002.5 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1034.4 1027.8 1024.3 1017.8 1014.1 1009.0 1003.8 1005.4 ****** ****** ****** ****** ****** DAY 24 20 27 15 6 2 4 1 ** ** ** ** MIN. QFF PRESSURE IN HPA 1008.8 1012.5 1005.6 1005.4 1002.6 991.3 994.4 996.8 ****** ****** ****** ****** ****** DAY 20 10 25 19 31 29 21 5 ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 800.6 797.7 795.5 797.7 799.3 794.5 797.2 798.2 801.7 802.5 799.1 798.5 798.6 MAX. QFE PRESSURE IN HPA 805.5 802.0 802.4 802.7 803.5 801.2 800.2 800.9 806.0 805.9 804.1 804.4 806.0 DAY 10 20 27 15 20 2 4 24 22 20 15 7 MIN. QFE PRESSURE IN HPA 788.6 792.9 790.8 794.6 795.2 790.3 793.7 794.2 799.2 799.7 794.7 790.3 788.6 DAY 20 1 8 29 11 21 21 5 30 1 7 20 MEAN QNH PRESSURE IN HPA 1023.5 1019.9 1017.3 1020.0 1021.9 1016.1 1019.4 1020.6 1024.9 1025.7 1021.6 1021.0 1021.0 MAX. QNH PRESSURE IN HPA 1029.5 1025.2 1025.7 1026.0 1027.0 1024.2 1023.0 1023.8 1030.1 1030.0 1027.8 1028.1 1030.1 DAY 10 20 27 15 20 2 4 24 22 20 15 7 MIN. QNH PRESSURE IN HPA 1008.8 1014.1 1011.5 1016.2 1016.9 1010.9 1015.1 1015.7 1021.8 1022.4 1016.3 1010.9 1008.8 DAY 20 1 8 29 11 21 21 5 30 1 7 20 MEAN QFF PRESSURE IN HPA 1020.4 1016.5 1012.4 1009.6 1007.1 997.5 999.1 1001.4 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1030.3 1023.3 1022.3 1016.4 1013.0 1006.6 1003.0 1004.7 ****** ****** ****** ****** ****** DAY 24 19 27 15 7 2 31 12 ** ** ** ** MIN. QFF PRESSURE IN HPA 1005.1 1008.6 1006.8 1003.2 1002.6 990.4 993.5 995.8 ****** ****** ****** ****** ****** DAY 20 25 19 19 31 28 21 5 ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 799.6 796.3 794.1 796.4 798.3 793.2 795.9 796.8 800.3 801.2 798.2 797.9 797.3 MAX. QFE PRESSURE IN HPA 804.6 801.0 801.2 801.4 802.2 800.6 798.5 799.5 804.9 805.5 803.3 803.7 805.5 DAY 10 21 27 5 20 2 4 24 22 14 15 7 MIN. QFE PRESSURE IN HPA 787.4 792.0 790.2 793.2 793.4 789.2 792.2 792.4 797.6 798.2 794.1 790.0 787.4 DAY 20 1 15 29 11 20 21 5 30 1 7 20 MEAN QNH PRESSURE IN HPA 1022.2 1018.2 1015.6 1018.4 1020.6 1014.4 1017.8 1018.9 1023.1 1024.2 1020.6 1020.1 1019.5 MAX. QNH PRESSURE IN HPA 1028.4 1024.0 1024.2 1024.5 1025.4 1023.5 1020.9 1022.1 1028.7 1029.5 1026.8 1027.3 1029.5 DAY 10 21 27 5 20 2 4 24 22 14 15 7 MIN. QNH PRESSURE IN HPA 1007.4 1013.0 1010.8 1014.5 1014.7 1009.6 1013.2 1013.5 1019.8 1020.6 1015.6 1010.5 1007.4 DAY 20 1 15 29 11 20 21 5 30 1 7 20 MEAN QFF PRESSURE IN HPA 1019.2 1014.8 1010.6 1008.4 1006.3 996.2 998.3 1000.3 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1027.9 1021.4 1020.0 1015.9 1011.1 1007.4 1002.5 1003.6 ****** ****** ****** ****** ****** DAY 24 19 27 5 18 2 31 11 ** ** ** ** MIN. QFF PRESSURE IN HPA 1004.8 1006.8 1004.8 1002.6 1002.0 988.6 991.9 994.0 ****** ****** ****** ****** ****** DAY 20 25 24 19 31 28 21 6 ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 800.6 797.0 794.7 797.1 798.6 793.1 795.7 796.8 800.5 801.7 799.1 798.7 797.8 MAX. QFE PRESSURE IN HPA 804.8 801.1 801.9 802.2 802.0 800.8 798.4 799.0 805.3 805.8 804.4 804.2 805.8 DAY 2 20 27 4 19 1 4 24 22 14 15 7 MIN. QFE PRESSURE IN HPA 789.6 792.5 790.0 793.4 794.4 789.5 792.0 792.1 797.9 798.8 794.7 792.4 789.5 DAY 20 1 15 29 11 21 21 5 30 1 8 20 MEAN QNH PRESSURE IN HPA 1023.4 1019.1 1016.2 1019.3 1021.1 1014.4 1017.5 1018.8 1023.3 1024.8 1021.7 1021.2 1020.1 MAX. QNH PRESSURE IN HPA 1028.6 1024.1 1025.1 1025.4 1025.2 1023.7 1020.8 1021.5 1029.2 1029.8 1028.1 1027.9 1029.8 DAY 2 20 27 4 19 1 4 24 22 14 15 7 MIN. QNH PRESSURE IN HPA 1010.1 1013.6 1010.5 1014.7 1015.9 1009.9 1013.0 1013.1 1020.2 1021.3 1016.3 1013.5 1009.9 DAY 20 1 15 29 11 21 21 5 30 1 8 20 MEAN QFF PRESSURE IN HPA 1023.3 1017.9 1012.7 1010.4 1007.6 996.6 998.8 1002.1 1010.7 1014.7 1017.9 1022.8 1011.3 MAX. QFF PRESSURE IN HPA 1033.5 1024.3 1022.1 1017.5 1012.2 1008.0 1003.0 1006.3 1016.5 1019.2 1029.3 1032.2 1033.5 DAY 24 20 27 5 18 1 31 31 22 14 15 7 MIN. QFF PRESSURE IN HPA 1010.4 1010.0 1005.2 1005.6 1003.3 989.3 991.6 995.2 1006.6 1009.5 1008.7 1006.9 989.3 DAY 20 25 24 29 31 27 21 5 29 8 8 30 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 801.2 798.1 795.8 798.3 799.7 794.4 797.0 797.3 ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 805.8 801.9 803.4 803.4 803.7 802.2 799.9 799.6 ****** ****** ****** ****** ****** DAY 2 20 27 4 18 1 4 1 ** ** ** ** MIN. QFE PRESSURE IN HPA 791.8 794.1 789.7 795.1 794.7 791.1 793.2 793.7 ****** ****** ****** ****** ****** DAY 20 15 7 29 4 20 20 5 ** ** ** ** MEAN QNH PRESSURE IN HPA 1024.2 1020.4 1017.7 1020.7 1022.4 1016.0 1019.0 1019.5 ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1029.8 1025.1 1026.9 1026.9 1027.3 1025.4 1022.6 1022.3 ****** ****** ****** ****** ****** DAY 2 20 27 4 18 1 4 1 ** ** ** ** MIN. QNH PRESSURE IN HPA 1012.7 1015.6 1010.2 1016.8 1016.3 1011.9 1014.5 1015.1 ****** ****** ****** ****** ****** DAY 20 15 7 29 4 20 20 5 ** ** ** ** MEAN QFF PRESSURE IN HPA 1023.3 1018.3 1013.4 1010.8 1007.8 996.9 998.6 1001.0 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1033.4 1024.9 1023.3 1015.9 1012.6 1008.4 1003.6 1005.1 ****** ****** ****** ****** ****** DAY 24 19 27 4 18 1 31 9 ** ** ** ** MIN. QFF PRESSURE IN HPA 1011.3 1011.6 1003.7 1005.6 1004.2 989.6 993.4 994.1 ****** ****** ****** ****** ****** DAY 19 25 7 18 31 28 21 5 ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 800.8 797.9 795.8 798.0 799.4 794.5 797.3 797.6 ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 805.9 802.1 803.1 802.7 804.0 801.4 800.6 799.3 ****** ****** ****** ****** ****** DAY 2 19 27 4 18 1 4 1 ** ** ** ** MIN. QFE PRESSURE IN HPA 792.6 794.2 789.4 794.4 794.7 790.8 793.4 794.5 ****** ****** ****** ****** ****** DAY 19 1 7 10 4 20 20 5 ** ** ** ** MEAN QNH PRESSURE IN HPA 1023.8 1020.2 1017.6 1020.3 1022.0 1016.1 1019.4 1019.8 ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1030.0 1025.3 1026.5 1026.0 1027.6 1024.5 1023.5 1021.9 ****** ****** ****** ****** ****** DAY 2 19 27 4 18 1 4 1 ** ** ** ** MIN. QNH PRESSURE IN HPA 1013.7 1015.7 1009.8 1015.9 1016.3 1011.5 1014.7 1016.0 ****** ****** ****** ****** ****** DAY 19 1 7 10 4 20 20 5 ** ** ** ** MEAN QFF PRESSURE IN HPA 1020.7 1016.7 1012.6 1009.8 1007.1 997.5 999.2 1001.5 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1031.9 1026.2 1023.2 1016.3 1012.8 1008.5 1003.7 1005.5 ****** ****** ****** ****** ****** DAY 24 19 27 14 18 1 4 11 ** ** ** ** MIN. QFF PRESSURE IN HPA 1007.9 1010.0 1005.2 1003.9 1002.1 991.1 993.6 996.4 ****** ****** ****** ****** ****** DAY 19 24 24 18 3 27 20 5 ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.3 7.5 9.2 16.4 22.5 26.4 26.9 26.7 24.1 14.9 11.3 7.1 16.6 MINIMUN AIR TEMPERATURE (C) -3.4 -2.2 1.7 5.4 11.0 13.2 15.3 14.8 12.1 5.3 0.9 -2.5 6.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 16 7 2 0 0 0 0 0 0 0 2 11 38 DAYS WITH FREEZING MIN.<= 0 24 23 9 4 0 0 0 0 0 4 15 23 102 TEMPERATURE RECORDS LOWEST(C) -8.2 -6.4 -4.8 -2.6 6.4 8.4 12.2 12.4 6.4 -0.6 -8.4 -12.4 -12.4 DAY 15 23 29 8 8 1 29 22 30 13 30 3 MAXIMUM AIR TEMPERATURE (C) 12.6 13.5 13.9 21.8 27.8 31.9 32.5 32.3 30.3 20.4 17.8 13.1 22.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 3 28 25 30 14 0 0 0 100 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 19.6 20.0 17.6 27.4 30.8 35.4 35.6 35.6 33.8 27.8 23.0 20.0 35.6 DAY 20 3 3 29 17 7 24 27 6 3 5 19 DIF. BETWEEN (MAX.-MIN.) (C) 16.0 15.7 12.2 16.4 16.8 18.7 17.2 17.5 18.2 15.1 16.9 15.6 16.3 MEAN DAILY TEMP. (MDT) (C) 4.6 5.6 7.8 13.6 19.4 22.5 23.9 23.6 21.2 12.8 9.3 5.3 14.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.9 51.6 93.4 79.5 34.4 0.0 0.0 0.0 261.8 HEATING DEG. DAYS(BASE 18 0C) 402.1 346.0 316.9 134.1 8.4 0.8 0.0 0.0 2.1 162.2 260.0 393.7 2026.3 DEWPOINT (MEAN C) -8.9 -8.1 -5.4 -3.6 0.9 -0.8 2.9 1.8 1.8 -0.5 -6.3 -8.8 -2.9 MIXING RATIO (G/KG) 2.52 2.78 3.46 3.84 5.21 4.81 6.20 5.70 5.78 4.93 3.15 2.68 4.26 VAPOUR PRESSURE (HPA) 3.23 3.55 4.39 4.89 6.64 6.11 7.85 7.23 7.33 6.29 4.04 3.43 5.42 SATURATION DEF. (HPA) 7.02 7.50 7.75 15.13 21.77 29.93 29.40 29.52 24.57 11.88 10.58 7.40 16.87 RELATIVE HUMIDITY (MEAN %) 37 38 40 29 26 19 24 22 26 41 33 35 31 RELATIVE HUMIDITY (MAX. %) 57 63 63 51 45 37 39 39 45 65 55 54 51 RELATIVE HUMIDITY (MIN. %) 21 21 26 18 16 12 17 15 17 26 20 20 19 RELATIVE HUMIDITY (MEAN% 03UTC) 56 60 61 50 45 34 39 39 43 62 55 50 50 RELATIVE HUMIDITY (MEAN% 09UTC) 27 26 31 20 19 14 19 16 19 32 25 28 23 RELATIVE HUMIDITY (MEAN% 15UTC) 34 34 37 23 21 13 20 18 19 38 30 34 27 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 0.0 10.0 10.0 1.0 0.4 0.0 5.0 1.1 0.0 19.2 0.0 11.4 58.1 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 0 0 1 0 1 2 DAYS WITH PRECIPITATION >= 5 0 1 0 0 0 0 0 0 0 2 0 1 4 DAYS WITH PRECIPITATION >= 1 0 2 3 0 0 0 2 0 0 2 0 1 10 DAYS WITH PRECIPITATION 1 2 10 2 4 0 2 3 0 6 0 3 33 GREATEST DAILY PRECIPITATION 0.0 8.0 4.0 0.6 0.2 0.0 4.0 0.6 0.0 10.0 0.0 11.0 11.0 DAY ** 11 5 20 20 ** 28 1 ** 27 ** 24 DAY WITH THUNDER STORM 0 0 0 0 1 0 3 0 0 2 0 0 6 DAYS WITH SNOW OR SLEET 0 1 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH DUST 1 2 2 6 5 6 5 0 2 2 0 2 33 WIND DIRECTION (PREVAILING) 270 225 225 225 270 360 360 360 315 360 360 225 360 PREVAILING WIND SPEED(KNOTS) 10.3 17.0 16.5 21.9 11.5 11.8 16.7 12.6 6.6 14.0 12.4 21.2 12.1 PREVAILING WIND PERCENT 17.4 19.3 26.5 20.0 16.1 20.0 20.0 31.6 17.3 25.2 16.7 20.0 15.4 CALMS PERCENT OF WIND 38.1 37.1 21.9 33.3 37.4 33.3 34.8 28.4 31.3 36.1 46.0 48.4 35.5 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 254 241 234 241 316 339 4 8 300 320 314 222 276 VECTOR WIND MAGNITUDE(KNOTS) 4.3 4.9 8.4 7.3 3.5 2.9 3.7 4.1 3.3 3.8 2.9 5.3 2.9 WIND STEADINESES (MEAN %) 68.3 67.1 75.7 68.2 53.0 41.4 46.2 51.9 41.8 46.3 50.0 69.7 36.7 WIND SPEED (MEAN KNOTS) 6.3 7.3 11.1 10.7 6.6 7.0 8.0 7.9 7.9 8.2 5.8 7.6 7.9 FASTEST WIND DIRECTION 220 220 190 210 20 230 10 360 280 20 210 200 20 FASTEST WIND SPEED (KNOTS) 43 35 35 43 51 33 35 29 31 43 31 45 51 DAY 25 9 14 19 20 18 29 12 29 9 7 23 DAYS WITH SKY CLEAR (0-2)/8 25 18 13 16 15 28 26 22 30 14 20 19 246 DAYS WITH P.CLOUDY (3-6)/8 6 6 11 10 13 2 4 8 0 13 9 10 92 DAYS WITH CLOUDY (7-8)/8 0 4 7 4 3 0 1 1 0 4 1 2 27 DAYS WITH VISIBILITY =< 2 KM 0 1 0 0 1 0 0 0 0 1 0 0 3 DURATION OF SUNSHINE HOURS 287.1 247.0 260.5 285.0 283.9 341.4 338.8 314.3 314.3 242.3 268.7 262.1 3445.4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 800.8 798.9 794.6 799.0 799.3 796.8 796.5 796.3 799.1 801.5 801.9 799.9 798.7 MAX. QFE PRESSURE IN HPA 807.4 806.4 801.0 804.8 803.2 802.3 799.9 802.2 805.8 806.4 808.2 808.4 808.4 DAY-HOUR 17- 6 1- 6 2- 6 22- 6 4- 6 28- 6 30- 3 7- 6 26- 6 17- 6 30- 6 1- 6 MIN. QFE PRESSURE IN HPA 793.3 790.6 787.3 790.8 793.6 791.2 790.0 791.6 794.7 795.3 797.6 789.2 787.3 DAY-HOUR 2-15 10-12 14-12 5- 3 29-15 12-15 3-15 28-12 1-15 9-12 7-12 31-12 MEAN QNH PRESSURE IN HPA 1023.7 1021.4 1016.2 1021.6 1021.9 1018.8 1018.4 1018.2 1021.6 1024.6 1025.1 1022.6 1021.2 MAX. QNH PRESSURE IN HPA 1031.8 1030.6 1024.0 1028.6 1026.7 1025.6 1022.6 1025.4 1029.8 1030.6 1032.8 1033.0 1033.0 DAY-HOUR 17- 6 1- 6 2- 6 22- 6 4- 6 28- 6 30- 3 7- 6 26- 6 17- 6 30- 6 1- 6 MIN. QNH PRESSURE IN HPA 1014.6 1011.3 1007.2 1011.5 1014.9 1012.0 1010.5 1012.5 1016.3 1017.0 1019.8 1009.6 1007.2 DAY-HOUR 2-15 10-12 14-12 5- 3 29-15 12-15 3-15 28-12 1-15 9-12 7-12 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 800.6 799.1 794.6 799.2 800.1 797.6 797.2 797.1 799.7 801.8 802.1 799.9 799.1 MAX. QFE PRESSURE IN HPA 806.5 805.8 799.8 803.2 802.8 801.9 799.9 801.7 805.0 805.5 806.7 807.3 807.3 DAY 17 1 3 30 4 28 30 7 26 17 30 2 MIN. QFE PRESSURE IN HPA 793.7 793.3 787.4 790.8 796.3 792.8 792.8 793.6 797.2 797.7 798.4 789.8 787.4 DAY 3 10 14 5 23 13 4 29 2 9 26 31 MEAN QNH PRESSURE IN HPA 1023.5 1021.6 1016.2 1021.8 1022.8 1019.8 1019.3 1019.2 1022.4 1025.0 1025.4 1022.6 1021.6 MAX. QNH PRESSURE IN HPA 1030.7 1029.8 1022.5 1026.7 1026.2 1025.1 1022.6 1024.8 1028.9 1029.5 1030.9 1031.7 1031.7 DAY 17 1 3 30 4 28 30 7 26 17 30 2 MIN. QNH PRESSURE IN HPA 1015.1 1014.6 1007.4 1011.5 1018.2 1014.0 1014.0 1014.9 1019.3 1019.9 1020.8 1010.3 1007.4 DAY 3 10 14 5 23 13 4 29 2 9 26 31 MEAN QFF PRESSURE IN HPA 1023.3 1019.7 1011.7 1012.5 1008.1 1002.3 1000.7 1001.5 1006.9 1016.8 1020.9 1021.4 1012.1 MAX. QFF PRESSURE IN HPA 1033.0 1028.0 1020.2 1018.7 1013.5 1010.7 1007.0 1008.0 1015.6 1025.9 1036.5 1039.0 1039.0 DAY 17 12 24 22 1 1 30 8 26 17 30 2 MIN. QFF PRESSURE IN HPA 1011.8 1008.8 1001.2 1003.5 1002.5 996.6 995.8 997.4 1001.8 1006.7 1013.9 1008.2 995.8 DAY 7 10 14 20 23 9 4 28 2 9 3 24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 802.0 800.1 795.6 800.1 800.6 797.9 797.5 797.5 800.5 802.7 803.3 801.1 799.9 MAX. QFE PRESSURE IN HPA 807.4 806.4 801.0 804.8 803.2 802.3 799.8 802.2 805.8 806.4 808.2 808.4 808.4 DAY 17 1 2 22 4 28 19 7 26 17 30 1 MIN. QFE PRESSURE IN HPA 795.4 793.7 788.0 792.0 797.3 793.2 792.8 793.8 797.8 797.8 799.6 790.2 788.0 DAY 3 10 14 5 23 13 3 29 2 9 26 31 MEAN QNH PRESSURE IN HPA 1025.2 1022.9 1017.4 1022.9 1023.4 1020.2 1019.7 1019.7 1023.4 1026.1 1026.7 1024.1 1022.7 MAX. QNH PRESSURE IN HPA 1031.8 1030.6 1024.0 1028.6 1026.7 1025.6 1022.5 1025.4 1029.8 1030.6 1032.8 1033.0 1033.0 DAY 17 1 2 22 4 28 19 7 26 17 30 1 MIN. QNH PRESSURE IN HPA 1017.1 1015.1 1008.1 1013.0 1019.5 1014.5 1014.0 1015.2 1020.1 1020.1 1022.3 1010.8 1008.1 DAY 3 10 14 5 23 13 3 29 2 9 26 31 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 800.9 799.2 794.9 799.2 799.6 797.2 796.7 796.6 799.3 801.4 801.9 799.9 798.9 MAX. QFE PRESSURE IN HPA 806.6 805.4 800.3 804.0 802.3 801.7 799.2 800.6 804.2 805.4 807.3 807.2 807.3 DAY 12 1 2 22 11 28 11 5 26 17 30 1 MIN. QFE PRESSURE IN HPA 795.0 792.2 787.9 792.0 796.2 792.8 792.0 793.0 796.4 796.6 798.2 790.2 787.9 DAY 2 10 14 5 29 13 3 29 1 9 7 31 MEAN QNH PRESSURE IN HPA 1023.9 1021.8 1016.5 1021.8 1022.2 1019.3 1018.8 1018.6 1021.9 1024.5 1025.0 1022.7 1021.4 MAX. QNH PRESSURE IN HPA 1030.8 1029.3 1023.1 1027.6 1025.6 1024.8 1021.8 1023.5 1027.9 1029.3 1031.7 1031.5 1031.7 DAY 12 1 2 22 11 28 11 5 26 17 30 1 MIN. QNH PRESSURE IN HPA 1016.6 1013.2 1008.0 1013.0 1018.1 1014.0 1013.0 1014.2 1018.4 1018.6 1020.6 1010.8 1008.0 DAY 2 10 14 5 29 13 3 29 1 9 7 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 799.9 797.9 793.7 798.1 798.2 795.8 795.7 795.3 797.8 800.5 800.8 798.9 797.7 MAX. QFE PRESSURE IN HPA 805.0 804.6 798.4 802.8 801.0 800.7 799.8 802.1 803.0 804.8 806.1 806.0 806.1 DAY 12 1 3 30 1 28 29 7 26 24 30 1 MIN. QFE PRESSURE IN HPA 793.6 790.6 787.3 791.7 794.4 791.7 790.4 791.6 794.8 795.3 797.6 789.2 787.3 DAY 2 10 14 5 29 12 3 28 1 9 7 31 MEAN QNH PRESSURE IN HPA 1022.7 1020.2 1015.1 1020.4 1020.6 1017.6 1017.5 1017.0 1020.1 1023.3 1023.7 1021.4 1020.0 MAX. QNH PRESSURE IN HPA 1028.9 1028.4 1020.8 1026.2 1024.0 1023.6 1022.5 1025.3 1026.4 1028.6 1030.2 1030.1 1030.2 DAY 12 1 3 30 1 28 29 7 26 24 30 1 MIN. QNH PRESSURE IN HPA 1014.9 1011.3 1007.2 1012.6 1015.9 1012.6 1011.0 1012.5 1016.4 1017.0 1019.8 1009.6 1007.2 DAY 2 10 14 5 29 12 3 28 1 9 7 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 ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 800.6 798.4 794.2 798.5 798.3 795.4 795.3 795.0 798.0 801.1 801.6 799.8 798.0 MAX. QFE PRESSURE IN HPA 805.8 805.6 800.4 802.8 801.0 799.9 799.0 800.2 803.0 805.0 806.6 807.0 807.0 DAY 16 1 2 22 12 28 29 7 26 16 30 1 MIN. QFE PRESSURE IN HPA 793.3 792.1 789.0 791.4 793.6 791.2 790.0 792.0 794.7 796.6 798.4 791.8 789.0 DAY 2 10 13 4 29 12 3 28 1 9 7 30 MEAN QNH PRESSURE IN HPA 1023.5 1020.8 1015.7 1020.9 1020.6 1017.1 1017.0 1016.7 1020.3 1024.1 1024.7 1022.5 1020.3 MAX. QNH PRESSURE IN HPA 1029.8 1029.6 1023.2 1026.2 1024.0 1022.6 1021.5 1023.0 1026.4 1028.9 1030.8 1031.3 1031.3 DAY 16 1 2 22 12 28 29 7 26 16 30 1 MIN. QNH PRESSURE IN HPA 1014.6 1013.1 1009.3 1012.3 1014.9 1012.0 1010.5 1013.0 1016.3 1018.6 1020.8 1012.7 1009.3 DAY 2 10 13 4 29 12 3 28 1 9 7 30 MEAN QFF PRESSURE IN HPA 1023.1 1018.8 1011.3 1011.4 1006.0 999.4 998.5 998.7 1004.8 1015.9 1020.4 1021.2 1010.8 MAX. QFF PRESSURE IN HPA 1031.7 1027.4 1016.9 1018.9 1010.7 1006.8 1006.7 1005.8 1013.4 1024.6 1036.5 1037.6 1037.6 DAY 12 1 22 22 1 1 29 7 30 17 30 1 MIN. QFF PRESSURE IN HPA 1013.0 1010.1 1005.8 1001.6 999.7 993.1 992.5 994.6 998.2 1006.6 1013.8 1011.4 992.5 DAY 6 9 13 19 29 9 3 18 1 4 10 20 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.6 3.4 10.6 13.5 20.0 23.4 27.3 25.0 21.1 15.3 8.5 5.1 14.6 MINIMUN AIR TEMPERATURE (C) -4.3 -3.7 3.1 6.4 10.4 12.5 17.8 15.1 10.9 6.0 0.3 -1.4 6.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 3 0 0 0 0 0 3 DAYS WITH MINIMUM TEMP. <=-4 17 9 0 0 0 0 0 0 0 0 9 11 46 DAYS WITH FREEZING MIN.<= 0 27 21 10 3 0 0 0 0 0 0 13 19 93 TEMPERATURE RECORDS LOWEST(C) -14.0 -20.2 -3.4 -2.4 7.0 9.2 10.6 11.0 7.0 2.4 -9.0 -11.6 -20.2 DAY 11 5 16 3 13 21 1 12 29 12 24 29 MAXIMUM AIR TEMPERATURE (C) 7.6 8.7 16.2 20.6 28.0 31.9 35.1 33.0 29.9 24.2 17.2 12.6 22.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 8 26 30 30 15 0 0 0 109 DAYS WITH MAXIMUM TEMP. <= 0 0 2 0 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS HIGHEST(C) 15.4 16.4 22.0 25.4 31.6 34.0 39.0 35.2 34.2 27.0 22.0 17.2 39.0 DAY 6 29 30 20 28 22 25 19 11 8 4 11 DIF. BETWEEN (MAX.-MIN.) (C) 11.9 12.4 13.1 14.2 17.6 19.4 17.3 17.9 19.0 18.2 16.9 14.0 16.0 MEAN DAILY TEMP. (MDT) (C) 1.6 2.5 9.7 13.5 19.2 22.2 26.4 24.0 20.4 15.1 8.7 5.6 14.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.3 37.0 168.4 94.3 20.2 0.0 0.0 0.0 322.2 HEATING DEG. DAYS(BASE 18 0C) 507.9 449.6 257.8 134.8 6.7 0.0 0.0 0.0 2.9 91.0 277.8 385.4 2113.8 DEWPOINT (MEAN C) -8.0 -7.0 -6.7 -2.0 -4.8 -2.2 5.2 4.7 -0.3 -1.5 -5.7 -7.5 -3.0 MIXING RATIO (G/KG) 2.84 3.11 3.24 4.54 3.60 4.22 7.21 6.93 4.83 4.41 3.37 2.94 4.27 VAPOUR PRESSURE (HPA) 3.62 3.95 4.11 5.77 4.59 5.36 9.08 8.75 6.15 5.65 4.31 3.75 5.42 SATURATION DEF. (HPA) 4.16 4.53 9.29 10.64 20.11 25.21 29.15 24.72 20.67 12.90 7.85 5.65 14.57 RELATIVE HUMIDITY (MEAN %) 49 51 36 39 22 20 26 29 26 34 39 43 35 RELATIVE HUMIDITY (MAX. %) 64 70 60 63 39 33 39 42 40 49 58 61 52 RELATIVE HUMIDITY (MIN. %) 36 36 21 21 10 10 17 19 16 21 22 25 21 RELATIVE HUMIDITY (MEAN% 03UTC) 61 69 56 56 34 31 37 40 39 47 56 55 48 RELATIVE HUMIDITY (MEAN% 09UTC) 41 42 26 25 12 13 19 22 18 23 26 30 25 RELATIVE HUMIDITY (MEAN% 15UTC) 52 49 28 32 13 12 19 21 18 27 32 38 28 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 18.3 56.0 20.2 9.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.9 105.6 DAYS WITH PRECIPITATION >=10 1 2 1 0 0 0 0 0 0 0 0 0 4 DAYS WITH PRECIPITATION >= 5 1 2 1 1 0 0 0 0 0 0 0 0 5 DAYS WITH PRECIPITATION >= 1 4 4 3 1 0 0 0 0 0 0 0 1 13 DAYS WITH PRECIPITATION 9 9 5 8 1 0 1 0 0 2 1 4 40 GREATEST DAILY PRECIPITATION 13.0 40.0 14.0 6.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 40.0 DAY 9 3 9 26 ** ** ** ** ** ** ** 17 DAY WITH THUNDER STORM 0 0 0 0 0 1 0 0 0 0 1 0 2 DAYS WITH SNOW OR SLEET 3 4 0 0 0 0 0 0 0 0 0 0 7 DAYS WITH DUST 0 1 8 21 10 7 6 4 3 0 3 2 65 WIND DIRECTION (PREVAILING) 270 270 225 270 270 315 360 315 315 315 315 225 270 PREVAILING WIND SPEED(KNOTS) 12.2 10.1 19.2 12.5 14.7 7.8 12.9 6.1 7.5 7.8 7.3 14.6 12.4 PREVAILING WIND PERCENT 18.7 21.4 28.0 20.0 20.2 16.7 12.9 14.9 17.1 20.2 16.3 19.4 12.8 CALMS PERCENT OF WIND 50.3 46.2 32.3 37.1 39.1 41.3 45.2 37.1 43.3 49.2 46.3 43.5 42.4 NO. OF WIND OBSERVATION 155 145 186 240 248 240 248 248 240 248 240 248 2686 VECTOR WIND DIRECTION (MEAN) 254 236 246 257 286 290 308 332 333 325 279 255 271 VECTOR WIND MAGNITUDE(KNOTS) 4.3 4.2 8.2 3.3 4.4 3.3 1.4 1.5 2.1 2.7 2.8 4.0 3.0 WIND STEADINESES (MEAN %) 68.3 68.9 78.1 46.5 63.8 54.1 22.6 23.8 43.7 61.4 54.9 62.5 46.9 WIND SPEED (MEAN KNOTS) 6.3 6.1 10.5 7.1 6.9 6.1 6.2 6.3 4.8 4.4 5.1 6.4 6.4 FASTEST WIND DIRECTION 240 200 250 190 250 240 20 300 280 230 270 240 250 FASTEST WIND SPEED (KNOTS) 35 35 49 35 39 39 41 39 31 39 39 39 49 DAY 19 19 21 26 11 30 31 31 2 14 20 20 DAYS WITH SKY CLEAR (0-2)/8 19 12 14 9 24 25 19 25 30 19 18 10 224 DAYS WITH P.CLOUDY (3-6)/8 6 13 11 8 7 5 9 6 0 10 9 13 97 DAYS WITH CLOUDY (7-8)/8 6 4 6 13 0 0 3 0 0 2 3 8 45 DAYS WITH VISIBILITY =< 2 KM 2 2 1 0 0 1 0 0 0 0 1 0 7 DURATION OF SUNSHINE HOURS 231.8 228.3 265.4 225.7 355.2 355.5 338.0 345.5 320.1 292.3 262.8 203.1 3423.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 797.1 796.3 795.4 797.9 798.4 795.6 793.1 794.8 798.4 801.6 801.3 798.5 797.4 MAX. QFE PRESSURE IN HPA 806.0 803.9 801.4 803.7 802.9 801.0 800.1 799.2 804.0 806.6 807.0 805.2 807.0 DAY-HOUR 3- 6 7- 6 17- 6 12- 6 3-18 12- 6 31- 6 21- 6 14- 6 28- 6 5- 6 4- 6 MIN. QFE PRESSURE IN HPA 791.0 790.0 788.3 793.0 793.9 789.2 788.4 790.2 794.2 795.8 794.4 786.4 786.4 DAY-HOUR 22- 3 3- 3 23-15 25-12 1- 0 30-12 18-12 24-12 3-12 7-12 30-12 27-12 MEAN QNH PRESSURE IN HPA 1019.2 1018.2 1017.1 1020.2 1020.8 1017.4 1014.3 1016.3 1020.8 1024.7 1024.3 1021.0 1019.5 MAX. QNH PRESSURE IN HPA 1030.1 1027.5 1024.5 1027.3 1026.3 1024.0 1022.9 1021.8 1027.6 1030.8 1031.3 1029.1 1031.3 DAY-HOUR 3- 6 7- 6 17- 6 12- 6 3-18 12- 6 31- 6 21- 6 14- 6 28- 6 5- 6 4- 6 MIN. QNH PRESSURE IN HPA 1011.8 1010.5 1008.5 1014.2 1015.3 1009.6 1008.6 1010.8 1015.7 1017.6 1015.9 1006.1 1006.1 DAY-HOUR 22- 3 3- 3 23-15 25-12 1- 0 30-12 18-12 24-12 3-12 7-12 30-12 27-12 MEAN QFF PRESSURE IN HPA ****** ****** 1010.1 1009.8 1005.4 999.2 992.8 996.6 1004.4 1013.1 1018.5 1017.9 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1021.4 1022.3 1013.0 1006.8 1003.7 1002.8 1011.4 1022.0 1029.2 1034.1 ****** DAY-HOUR **-** **-** 17- 3 3- 6 3-18 8- 3 31- 3 13- 3 25- 3 28- 3 26- 6 29-18 MIN. QFF PRESSURE IN HPA ****** ****** 1000.8 1001.2 998.9 992.7 985.8 990.4 996.5 1003.6 1009.0 998.6 ****** DAY-HOUR **-** **-** 23- 0 30-21 19-15 30- 9 25-12 24-12 12- 9 7-12 20- 0 25-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 797.4 798.2 795.8 793.1 794.9 798.4 801.6 801.3 798.3 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 801.4 800.8 799.8 799.1 797.9 802.8 805.5 805.8 804.0 ****** DAY ** ** ** 9 4 1 31 1 15 17 3 3 MIN. QFE PRESSURE IN HPA ****** ****** ****** 793.7 793.9 790.9 789.9 792.0 795.6 797.6 795.8 789.0 ****** DAY ** ** ** 25 1 30 8 3 4 9 29 27 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1019.6 1020.5 1017.6 1014.3 1016.5 1020.8 1024.6 1024.4 1020.7 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1024.5 1023.7 1022.5 1021.7 1020.2 1026.2 1029.5 1029.8 1027.6 ****** DAY ** ** ** 9 4 1 31 1 15 17 3 3 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1015.1 1015.3 1011.6 1010.4 1013.0 1017.4 1019.8 1017.6 1009.3 ****** DAY ** ** ** 25 1 30 8 3 4 9 29 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1009.0 1005.3 999.8 993.2 996.9 1004.4 1012.5 1017.5 1016.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1018.3 1009.7 1006.0 1002.8 1001.0 1009.4 1018.1 1025.3 1029.4 ****** DAY ** ** ** 3 4 1 31 13 25 28 26 30 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1002.6 1000.1 994.2 987.6 991.7 998.1 1006.3 1009.0 1001.3 ****** DAY ** ** ** 23 24 30 17 4 12 9 20 26 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 796.7 796.3 795.5 798.2 799.0 796.6 794.1 795.7 799.3 802.1 801.8 798.8 797.8 MAX. QFE PRESSURE IN HPA 804.5 802.5 800.5 802.3 801.6 800.7 800.0 798.2 803.6 806.1 806.2 804.1 806.2 DAY 3 7 17 13 3 13 31 1 15 17 6 5 MIN. QFE PRESSURE IN HPA 791.0 790.0 790.9 793.9 794.7 791.0 790.2 793.0 796.5 798.3 796.3 789.2 789.2 DAY 22 3 5 25 1 30 18 3 4 7 29 27 MEAN QNH PRESSURE IN HPA 1018.8 1018.2 1017.3 1020.5 1021.5 1018.6 1015.5 1017.5 1021.9 1025.3 1025.0 1021.3 1020.1 MAX. QNH PRESSURE IN HPA 1028.2 1025.8 1023.4 1025.6 1024.7 1023.6 1022.8 1020.6 1027.1 1030.2 1030.3 1027.8 1030.3 DAY 3 7 17 13 3 13 31 1 15 17 6 5 MIN. QNH PRESSURE IN HPA 1011.8 1010.5 1011.6 1015.3 1016.3 1011.8 1010.8 1014.2 1018.5 1020.7 1018.2 1009.6 1009.6 DAY 22 3 5 25 1 30 18 3 4 7 29 27 MEAN QFF PRESSURE IN HPA 1020.5 1019.1 1011.5 1011.3 1006.7 1000.9 994.8 999.0 1007.0 1015.5 1021.0 1019.6 1010.6 MAX. QFF PRESSURE IN HPA 1036.7 1036.3 1021.4 1021.9 1012.0 1006.8 1003.7 1002.8 1011.4 1022.0 1028.6 1031.8 1036.7 DAY 11 7 17 3 8 8 31 13 25 28 25 30 MIN. QFF PRESSURE IN HPA 1007.8 1007.5 1002.4 1005.9 1002.0 993.6 988.5 993.6 1000.4 1010.0 1011.4 1003.0 988.5 DAY 7 3 14 23 24 30 17 3 12 7 14 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 798.1 797.4 796.5 799.0 799.5 796.7 794.3 796.0 799.9 803.0 802.8 799.8 798.6 MAX. QFE PRESSURE IN HPA 806.0 803.9 801.4 803.7 801.9 801.0 800.1 799.2 804.0 806.6 807.0 805.2 807.0 DAY 3 7 17 12 3 12 31 21 14 28 5 4 MIN. QFE PRESSURE IN HPA 792.8 791.0 792.0 794.8 796.6 790.8 790.3 793.2 797.3 798.8 797.3 789.3 789.3 DAY 26 3 9 25 1 30 18 3 12 7 29 27 MEAN QNH PRESSURE IN HPA 1020.5 1019.5 1018.5 1021.5 1022.1 1018.7 1015.7 1017.9 1022.6 1026.4 1026.2 1022.5 1021.0 MAX. QNH PRESSURE IN HPA 1030.1 1027.5 1024.5 1027.3 1025.1 1024.0 1022.9 1021.8 1027.6 1030.8 1031.3 1029.1 1031.3 DAY 3 7 17 12 3 12 31 21 14 28 5 4 MIN. QNH PRESSURE IN HPA 1014.0 1011.8 1013.0 1016.4 1018.6 1011.5 1010.9 1014.5 1019.5 1021.3 1019.5 1009.7 1009.7 DAY 26 3 9 25 1 30 18 3 12 7 29 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1011.1 1006.5 999.9 993.7 997.5 1005.6 1014.6 1020.6 1020.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1022.3 1010.7 1005.3 1002.2 1001.7 1009.9 1021.1 1029.2 1032.5 ****** DAY ** ** ** 3 5 1 31 26 25 28 26 29 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1004.9 1001.8 992.8 987.7 992.2 998.6 1008.8 1011.4 1003.2 ****** DAY ** ** ** 30 19 30 18 3 12 7 14 26 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 797.2 796.5 795.6 798.1 798.6 795.8 793.2 794.9 798.5 801.5 801.1 798.3 797.4 MAX. QFE PRESSURE IN HPA 804.2 803.0 800.3 803.0 801.7 800.4 799.1 798.1 802.6 805.1 805.8 803.5 805.8 DAY 10 7 17 12 3 12 31 21 14 28 4 5 MIN. QFE PRESSURE IN HPA 792.1 790.4 790.2 794.1 795.8 790.0 789.1 791.8 796.2 797.3 795.8 787.3 787.3 DAY 19 3 23 25 19 30 18 24 2 7 29 27 MEAN QNH PRESSURE IN HPA 1019.4 1018.5 1017.3 1020.4 1021.0 1017.6 1014.4 1016.5 1021.0 1024.5 1024.0 1020.7 1019.6 MAX. QNH PRESSURE IN HPA 1027.9 1026.4 1023.1 1026.4 1024.8 1023.2 1021.7 1020.4 1025.9 1029.0 1029.8 1027.0 1029.8 DAY 10 7 17 12 3 12 31 21 14 28 4 5 MIN. QNH PRESSURE IN HPA 1013.1 1011.0 1010.8 1015.6 1017.6 1010.5 1009.4 1012.7 1018.1 1019.5 1017.6 1007.2 1007.2 DAY 19 3 23 25 19 30 18 24 2 7 29 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1009.5 1005.4 999.2 992.5 996.0 1003.7 1011.8 1016.9 1016.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1020.7 1010.7 1004.9 1001.2 1001.0 1008.9 1016.9 1024.9 1030.0 ****** DAY ** ** ** 3 5 12 31 12 30 28 25 29 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1003.4 1000.5 992.7 986.9 991.2 996.5 1005.4 1009.5 1001.0 ****** DAY ** ** ** 30 19 30 18 3 12 9 28 26 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 796.3 795.4 794.3 796.9 797.3 794.5 791.9 793.5 797.0 800.2 799.9 797.4 796.2 MAX. QFE PRESSURE IN HPA 803.4 801.0 798.5 802.3 800.5 799.2 797.8 796.6 801.2 804.0 804.0 802.2 804.0 DAY 10 7 17 12 3 12 30 21 14 27 4 2 MIN. QFE PRESSURE IN HPA 791.4 790.2 788.6 793.0 794.6 789.2 788.4 790.2 794.2 795.8 794.4 786.4 786.4 DAY 26 3 23 25 19 30 18 24 3 7 30 27 MEAN QNH PRESSURE IN HPA 1018.2 1017.1 1015.7 1019.0 1019.4 1016.0 1012.9 1014.8 1019.1 1023.0 1022.7 1019.5 1018.1 MAX. QNH PRESSURE IN HPA 1026.9 1024.0 1020.9 1025.6 1023.4 1021.8 1020.1 1018.6 1024.2 1027.6 1027.6 1025.4 1027.6 DAY 10 7 17 12 3 12 30 21 14 27 4 2 MIN. QNH PRESSURE IN HPA 1012.3 1010.8 1008.8 1014.2 1016.2 1009.6 1008.6 1010.8 1015.7 1017.6 1015.9 1006.1 1006.1 DAY 26 3 23 25 19 30 18 24 3 7 30 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1008.4 1004.2 998.2 991.6 995.1 1002.5 1010.7 1015.8 1015.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1019.8 1009.1 1005.0 1000.8 999.8 1007.4 1017.1 1022.8 1028.0 ****** DAY ** ** ** 3 5 2 30 13 30 27 25 29 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1002.5 998.9 993.1 985.8 990.4 997.2 1003.6 1009.0 1002.4 ****** DAY ** ** ** 20 24 28 25 24 12 7 28 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 797.0 796.0 794.9 797.2 797.2 794.3 791.6 793.4 797.2 800.9 800.8 798.4 796.6 MAX. QFE PRESSURE IN HPA 804.0 801.6 798.6 802.4 801.3 798.8 797.7 796.4 801.4 805.0 805.4 803.4 805.4 DAY 10 7 17 12 3 12 30 21 14 27 5 3 MIN. QFE PRESSURE IN HPA 792.0 791.0 788.3 793.4 794.0 789.6 788.4 790.4 794.3 796.4 794.7 788.8 788.3 DAY 26 17 23 25 19 30 18 24 3 7 30 27 MEAN QNH PRESSURE IN HPA 1019.1 1017.9 1016.5 1019.4 1019.4 1015.8 1012.5 1014.7 1019.3 1023.8 1023.7 1020.7 1018.6 MAX. QNH PRESSURE IN HPA 1027.6 1024.7 1021.0 1025.7 1024.3 1021.3 1019.9 1018.4 1024.5 1028.9 1029.3 1026.9 1029.3 DAY 10 7 17 12 3 12 30 21 14 27 5 3 MIN. QNH PRESSURE IN HPA 1013.0 1011.8 1008.5 1014.7 1015.4 1010.1 1008.6 1011.0 1015.8 1018.4 1016.3 1009.1 1008.5 DAY 26 17 23 25 19 30 18 24 3 7 30 27 MEAN QFF PRESSURE IN HPA 1020.7 1018.6 1010.6 1010.0 1004.6 998.1 991.7 996.0 1004.4 1014.0 1019.7 1019.1 1009.0 MAX. QFF PRESSURE IN HPA 1036.0 1036.7 1018.5 1021.3 1011.0 1004.8 1001.1 1000.8 1009.4 1020.8 1027.4 1032.7 1036.7 DAY 11 6 15 3 4 1 30 31 30 27 25 29 MIN. QFF PRESSURE IN HPA 1012.0 1009.5 1002.2 1001.9 998.9 993.1 986.1 991.6 998.0 1007.4 1012.1 1005.1 986.1 DAY 28 2 23 22 19 30 17 3 12 7 28 26 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 798.4 798.7 795.6 793.1 794.7 798.6 802.0 801.5 798.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 803.6 802.9 799.6 799.1 797.7 802.9 805.6 806.0 804.4 ****** DAY ** ** ** 12 3 1 30 21 14 28 5 2 MIN. QFE PRESSURE IN HPA ****** ****** ****** 793.9 795.8 790.9 789.8 791.6 796.3 797.8 795.3 789.2 ****** DAY ** ** ** 25 23 30 16 2 1 8 30 27 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1020.8 1021.2 1017.4 1014.3 1016.3 1021.0 1025.2 1024.6 1021.4 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1027.1 1026.3 1022.3 1021.7 1019.9 1026.3 1029.6 1030.1 1028.1 ****** DAY ** ** ** 12 3 1 30 21 14 28 5 2 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1015.3 1017.6 1011.6 1010.3 1012.5 1018.2 1020.1 1017.0 1009.6 ****** DAY ** ** ** 25 23 30 16 2 1 8 30 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.2 1005.5 998.7 992.3 996.0 1004.1 1013.3 1019.2 1018.9 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1020.4 1013.0 1003.8 1001.3 1001.1 1008.9 1020.6 1026.8 1034.1 ****** DAY ** ** ** 3 3 1 30 31 30 28 26 29 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1003.6 1000.6 993.4 986.4 991.0 998.3 1007.8 1010.7 1005.2 ****** DAY ** ** ** 30 19 29 16 2 11 8 28 25 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 797.9 798.7 795.6 793.4 795.0 798.6 801.8 801.4 798.5 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 802.1 802.1 799.7 799.9 797.9 802.9 805.8 806.0 804.2 ****** DAY ** ** ** 12 3 1 30 21 14 16 5 2 MIN. QFE PRESSURE IN HPA ****** ****** ****** 793.1 795.6 790.9 790.0 792.0 795.9 797.8 795.3 788.1 ****** DAY ** ** ** 25 23 30 7 24 3 7 30 25 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1020.2 1021.2 1017.4 1014.7 1016.6 1021.1 1025.0 1024.4 1021.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1025.3 1025.3 1022.4 1022.6 1020.2 1026.3 1029.8 1030.1 1027.9 ****** DAY ** ** ** 12 3 1 30 21 14 16 5 2 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1014.3 1017.4 1011.6 1010.5 1013.0 1017.7 1020.1 1017.0 1008.2 ****** DAY ** ** ** 25 23 30 7 24 3 7 30 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1009.1 1005.4 999.0 992.7 996.3 1004.0 1012.4 1017.5 1017.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1019.0 1011.4 1003.9 1003.0 1001.0 1008.8 1018.0 1025.1 1032.5 ****** DAY ** ** ** 3 3 1 30 12 30 27 15 29 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1001.2 1000.3 993.2 987.1 990.8 996.5 1005.9 1009.1 998.6 ****** DAY ** ** ** 30 23 29 16 3 11 8 19 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.1 0.6 7.5 12.3 18.5 24.8 26.2 24.9 20.6 15.0 8.6 4.0 13.6 MINIMUN AIR TEMPERATURE (C) -6.8 -6.0 1.2 5.0 9.6 14.1 16.5 14.7 10.8 5.2 1.5 -2.2 5.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 23 17 1 0 0 0 0 0 0 0 0 11 52 DAYS WITH FREEZING MIN.<= 0 30 23 13 3 0 0 0 0 0 0 14 23 106 TEMPERATURE RECORDS LOWEST(C) -12.0 -14.8 -7.0 -2.0 2.6 10.0 12.0 11.2 5.6 2.4 -3.8 -7.4 -14.8 DAY 16 7 31 2 1 13 25 8 30 23 26 22 MAXIMUM AIR TEMPERATURE (C) 7.3 7.7 14.4 19.2 26.1 33.0 33.6 32.8 29.3 24.4 15.6 10.8 21.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 9 28 29 31 18 0 0 0 115 DAYS WITH MAXIMUM TEMP. <= 0 0 2 0 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS HIGHEST(C) 11.0 16.0 19.2 25.2 33.4 36.6 37.4 34.0 32.6 28.4 19.4 14.4 37.4 DAY 2 28 4 17 29 28 15 5 7 9 6 1 DIF. BETWEEN (MAX.-MIN.) (C) 14.1 13.7 13.2 14.2 16.5 18.9 17.1 18.1 18.5 19.2 14.1 13.0 15.9 MEAN DAILY TEMP. (MDT) (C) 0.3 0.9 7.8 12.1 17.8 23.6 25.0 23.8 20.0 14.8 8.5 4.3 13.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 12.9 78.6 125.3 85.6 17.2 0.0 0.0 0.0 319.6 HEATING DEG. DAYS(BASE 18 0C) 549.2 480.1 315.2 177.7 49.8 0.0 0.0 0.0 14.5 99.4 273.8 424.9 2384.6 DEWPOINT (MEAN C) -11.4 -11.8 -5.6 -2.8 -3.2 -2.0 2.4 -2.8 -5.8 -7.6 -3.0 -7.0 -5.1 MIXING RATIO (G/KG) 2.15 2.29 3.41 4.25 3.98 4.29 5.97 4.07 3.22 2.81 4.10 3.01 3.63 VAPOUR PRESSURE (HPA) 2.74 2.92 4.33 5.41 5.08 5.45 7.56 5.17 4.10 3.61 5.24 3.84 4.62 SATURATION DEF. (HPA) 3.70 4.02 6.60 9.73 17.74 27.71 28.29 27.91 21.99 14.80 6.53 4.70 14.48 RELATIVE HUMIDITY (MEAN %) 46 44 46 41 27 19 23 18 19 23 49 49 34 RELATIVE HUMIDITY (MAX. %) 66 66 70 65 45 30 33 30 30 37 71 69 51 RELATIVE HUMIDITY (MIN. %) 26 24 23 20 13 11 15 9 10 10 27 26 18 RELATIVE HUMIDITY (MEAN% 03UTC) 58 56 63 59 42 27 32 28 28 34 66 63 46 RELATIVE HUMIDITY (MEAN% 09UTC) 31 33 28 24 16 13 17 11 12 13 34 32 22 RELATIVE HUMIDITY (MEAN% 15UTC) 41 35 38 31 18 13 16 11 12 17 40 42 26 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 9.0 10.9 24.1 9.7 0.7 0.0 0.0 0.0 0.0 0.0 16.9 13.8 85.1 DAYS WITH PRECIPITATION >=10 0 0 1 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 0 1 1 0 0 0 0 0 0 0 1 1 4 DAYS WITH PRECIPITATION >= 1 3 2 4 5 0 0 0 0 0 0 4 4 22 DAYS WITH PRECIPITATION 7 9 11 11 3 0 0 0 0 1 8 8 58 GREATEST DAILY PRECIPITATION 4.0 8.4 12.5 3.4 0.6 0.0 0.0 0.0 0.0 0.0 5.0 5.0 12.5 DAY 3 22 19 22 8 ** ** ** ** ** 17 5 DAY WITH THUNDER STORM 0 0 3 3 0 0 0 0 0 0 0 0 6 DAYS WITH SNOW OR SLEET 4 4 1 0 0 0 0 0 0 0 0 0 9 DAYS WITH DUST 2 0 14 5 12 10 21 3 3 1 0 0 71 WIND DIRECTION (PREVAILING) 270 270 225 360 360 315 360 360 315 315 315 360 360 PREVAILING WIND SPEED(KNOTS) 11.7 10.9 17.0 9.5 12.0 7.6 12.8 10.4 6.7 6.3 6.0 7.4 9.9 PREVAILING WIND PERCENT 18.1 17.4 17.7 17.5 20.2 16.3 31.9 19.8 20.4 24.2 13.8 11.7 16.0 CALMS PERCENT OF WIND 45.2 38.8 44.0 47.1 37.5 39.2 29.0 40.3 37.1 44.4 57.9 55.6 43.0 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 259 277 244 329 317 302 4 359 337 331 275 269 307 VECTOR WIND MAGNITUDE(KNOTS) 3.4 3.7 3.9 1.8 3.9 2.4 4.8 3.3 2.7 2.3 2.6 1.5 2.3 WIND STEADINESES (MEAN %) 59.6 59.7 59.1 36.7 59.1 41.4 64.0 62.3 48.2 57.5 66.7 37.5 41.8 WIND SPEED (MEAN KNOTS) 5.7 6.2 6.6 4.9 6.6 5.8 7.5 5.3 5.6 4.0 3.9 4.0 5.5 FASTEST WIND DIRECTION 260 330 210 260 280 350 360 20 360 230 290 190 260 FASTEST WIND SPEED (KNOTS) 31 35 35 39 35 29 27 23 23 23 29 39 39 DAY 12 14 16 28 6 7 21 7 22 21 19 4 DAYS WITH SKY CLEAR (0-2)/8 20 15 14 5 20 29 25 22 29 25 12 19 235 DAYS WITH P.CLOUDY (3-6)/8 10 10 10 17 6 1 6 7 1 6 9 7 90 DAYS WITH CLOUDY (7-8)/8 1 3 7 8 5 0 0 2 0 0 9 5 40 DAYS WITH VISIBILITY =< 2 KM 0 0 2 0 0 1 0 0 0 0 0 1 4 DURATION OF SUNSHINE HOURS 269.4 237.2 237.8 218.6 295.2 342.7 353.9 317.1 320.3 306.9 193.2 225.5 3317.8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 795.6 797.5 795.4 799.0 798.7 796.0 795.9 796.2 798.2 801.7 801.4 798.2 797.8 MAX. QFE PRESSURE IN HPA 800.9 803.8 801.7 804.2 802.1 800.5 800.1 800.3 805.7 807.5 806.3 803.3 807.5 DAY-HOUR 27- 6 20- 6 8- 6 9- 6 13-18 4- 6 20- 6 26- 6 24- 6 27- 6 29- 6 1- 6 MIN. QFE PRESSURE IN HPA 789.4 789.1 787.4 794.5 794.6 791.9 790.9 789.6 792.9 796.2 797.5 793.9 787.4 DAY-HOUR 17- 3 14- 3 30- 0 23-12 31-12 7-12 5-15 1-15 12-15 1-12 24-12 5- 9 MEAN QNH PRESSURE IN HPA 1017.4 1019.7 1017.2 1021.5 1021.2 1017.8 1017.8 1018.1 1020.5 1024.8 1024.4 1020.6 1020.1 MAX. QNH PRESSURE IN HPA 1023.8 1027.4 1024.8 1027.9 1025.3 1023.4 1022.9 1023.1 1029.7 1031.9 1030.4 1026.8 1031.9 DAY-HOUR 27- 6 20- 6 8- 6 9- 6 13-18 4- 6 20- 6 26- 6 24- 6 27- 6 29- 6 1- 6 MIN. QNH PRESSURE IN HPA 1009.8 1009.4 1007.4 1016.0 1016.2 1012.9 1011.6 1010.1 1014.1 1018.1 1019.7 1015.3 1007.4 DAY-HOUR 17- 3 14- 3 30- 0 23-12 31-12 7-12 5-15 1-15 12-15 1-12 24-12 5- 9 MEAN QFF PRESSURE IN HPA 1018.9 1020.8 1011.8 1012.3 1007.1 998.7 997.3 998.9 1004.8 1013.6 1018.3 1018.5 1010.1 MAX. QFF PRESSURE IN HPA 1029.8 1034.5 1023.6 1021.7 1015.1 1005.1 1003.7 1006.2 1019.7 1023.5 1027.5 1028.4 1034.5 DAY-HOUR 19- 3 4- 6 31- 6 2- 3 1- 3 13- 3 22- 3 8- 3 24- 3 27- 3 26- 3 19- 3 MIN. QFF PRESSURE IN HPA 1004.9 1003.5 1000.5 1005.2 997.8 992.3 989.8 990.2 996.8 1005.1 1011.1 1009.4 989.8 DAY-HOUR 11-21 22-21 15-18 17-21 31-12 30-18 5- 9 1-21 11-12 1-12 6-21 5- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 795.4 797.0 795.2 798.8 798.7 796.1 796.1 796.2 798.2 801.6 801.1 798.1 797.7 MAX. QFE PRESSURE IN HPA 799.7 801.9 800.4 802.9 800.6 799.3 798.8 798.5 804.3 805.8 805.3 802.4 805.8 DAY 10 8 8 9 13 4 20 8 24 27 29 19 MIN. QFE PRESSURE IN HPA 790.1 789.5 787.4 795.2 796.6 793.3 793.0 791.3 794.2 797.8 797.8 794.0 787.4 DAY 12 23 30 6 31 7 6 2 12 2 12 15 MEAN QNH PRESSURE IN HPA 1017.1 1019.1 1016.9 1021.3 1021.2 1018.0 1017.9 1018.1 1020.6 1024.7 1024.1 1020.4 1019.9 MAX. QNH PRESSURE IN HPA 1022.4 1025.1 1023.2 1026.3 1023.5 1021.9 1021.3 1020.9 1028.0 1029.8 1029.2 1025.7 1029.8 DAY 10 8 8 9 13 4 20 8 24 27 29 19 MIN. QNH PRESSURE IN HPA 1010.7 1009.9 1007.4 1016.9 1018.6 1014.6 1014.2 1012.1 1015.7 1020.1 1020.1 1015.4 1007.4 DAY 12 23 30 6 31 7 6 2 12 2 12 15 MEAN QFF PRESSURE IN HPA 1017.7 1019.6 1010.9 1012.0 1007.5 999.4 998.0 999.2 1004.6 1012.8 1017.2 1017.2 1009.7 MAX. QFF PRESSURE IN HPA 1027.4 1030.5 1019.2 1019.2 1013.8 1004.0 1002.8 1003.9 1017.0 1020.3 1022.5 1025.5 1030.5 DAY 19 6 31 9 2 13 29 8 24 27 26 19 MIN. QFF PRESSURE IN HPA 1005.9 1005.7 1002.5 1005.8 1000.2 993.6 991.8 992.4 997.8 1006.7 1011.4 1009.4 991.8 DAY 3 23 28 18 30 30 6 2 14 2 7 5 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 795.8 797.6 795.7 799.3 799.4 796.9 796.8 797.0 799.0 802.3 801.6 798.4 798.3 MAX. QFE PRESSURE IN HPA 800.0 802.2 801.2 803.3 801.4 799.8 799.7 799.3 805.0 806.6 805.8 802.5 806.6 DAY 27 26 8 9 19 4 20 26 24 27 29 19 MIN. QFE PRESSURE IN HPA 789.4 789.1 788.1 795.7 797.2 793.4 794.2 792.5 795.4 798.6 798.2 794.6 788.1 DAY 17 14 30 30 31 7 5 2 12 2 12 15 MEAN QNH PRESSURE IN HPA 1017.6 1019.8 1017.5 1021.9 1022.0 1018.9 1018.9 1019.1 1021.6 1025.5 1024.7 1020.8 1020.7 MAX. QNH PRESSURE IN HPA 1022.8 1025.4 1024.2 1026.8 1024.5 1022.5 1022.4 1021.9 1028.9 1030.8 1029.8 1025.8 1030.8 DAY 27 26 8 9 19 4 20 26 24 27 29 19 MIN. QNH PRESSURE IN HPA 1009.8 1009.4 1008.2 1017.5 1019.3 1014.7 1015.7 1013.6 1017.1 1021.0 1020.6 1016.2 1008.2 DAY 17 14 30 30 31 7 5 2 12 2 12 15 MEAN QFF PRESSURE IN HPA 1020.4 1022.3 1013.5 1014.0 1008.8 1000.7 999.4 1001.3 1007.4 1016.1 1020.1 1019.9 1012.0 MAX. QFF PRESSURE IN HPA 1029.8 1032.9 1023.4 1021.7 1015.1 1005.1 1003.7 1006.2 1019.7 1023.5 1027.5 1028.4 1032.9 DAY 19 4 31 2 1 13 22 8 24 27 26 19 MIN. QFF PRESSURE IN HPA 1008.7 1008.8 1003.7 1008.7 1000.7 995.9 994.5 994.3 1001.2 1010.6 1013.5 1012.5 994.3 DAY 17 23 28 29 30 30 17 2 13 2 16 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 796.8 798.6 796.5 800.1 799.8 797.2 797.1 797.6 799.8 803.3 802.7 799.5 799.1 MAX. QFE PRESSURE IN HPA 800.9 803.8 801.7 804.2 801.5 800.5 800.1 800.3 805.7 807.5 806.3 803.3 807.5 DAY 27 20 8 9 13 4 20 26 24 27 29 1 MIN. QFE PRESSURE IN HPA 791.7 790.0 789.4 796.4 797.5 793.6 794.2 792.5 796.0 799.4 799.2 795.4 789.4 DAY 17 14 30 23 31 7 5 2 12 2 12 5 MEAN QNH PRESSURE IN HPA 1018.9 1021.0 1018.5 1022.8 1022.5 1019.3 1019.2 1019.9 1022.5 1026.7 1026.0 1022.2 1021.6 MAX. QNH PRESSURE IN HPA 1023.8 1027.4 1024.8 1027.9 1024.6 1023.4 1022.9 1023.1 1029.7 1031.9 1030.4 1026.8 1031.9 DAY 27 20 8 9 13 4 20 26 24 27 29 1 MIN. QNH PRESSURE IN HPA 1012.6 1010.5 1009.8 1018.4 1019.7 1014.9 1015.7 1013.6 1017.9 1022.0 1021.8 1017.1 1009.8 DAY 17 14 30 23 31 7 5 2 12 2 12 5 MEAN QFF PRESSURE IN HPA 1021.1 1022.5 1013.3 1013.1 1007.9 999.4 997.8 999.7 1006.0 1015.4 1020.0 1020.7 1011.4 MAX. QFF PRESSURE IN HPA 1028.7 1034.5 1023.6 1021.6 1014.4 1004.1 1002.5 1004.4 1017.9 1023.4 1025.5 1028.4 1034.5 DAY 19 4 31 2 1 4 23 8 23 27 26 19 MIN. QFF PRESSURE IN HPA 1010.7 1011.4 1002.9 1007.0 999.6 995.5 992.3 992.7 999.9 1009.4 1015.2 1011.0 992.3 DAY 3 23 28 29 31 30 5 2 11 2 20 5 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 795.6 797.7 795.4 799.1 798.8 796.1 796.1 796.5 798.3 801.7 801.2 798.0 797.9 MAX. QFE PRESSURE IN HPA 799.3 802.4 800.3 804.0 800.7 799.3 799.3 799.5 804.1 805.7 804.8 801.9 805.7 DAY 27 8 8 9 13 4 20 26 24 27 28 1 MIN. QFE PRESSURE IN HPA 791.8 791.0 789.3 795.6 796.3 792.5 792.7 791.6 794.5 797.8 799.2 793.9 789.3 DAY 12 14 28 23 31 7 5 2 12 1 6 5 MEAN QNH PRESSURE IN HPA 1017.4 1020.0 1017.1 1021.7 1021.3 1018.0 1018.0 1018.5 1020.7 1024.8 1024.2 1020.3 1020.2 MAX. QNH PRESSURE IN HPA 1021.9 1025.7 1023.1 1027.6 1023.6 1021.9 1021.9 1022.1 1027.8 1029.7 1028.6 1025.1 1029.7 DAY 27 8 8 9 13 4 20 26 24 27 28 1 MIN. QNH PRESSURE IN HPA 1012.7 1011.8 1009.7 1017.4 1018.2 1013.6 1013.8 1012.5 1016.0 1020.1 1021.8 1015.3 1009.7 DAY 12 14 28 23 31 7 5 2 12 1 6 5 MEAN QFF PRESSURE IN HPA 1017.7 1020.2 1011.0 1011.8 1006.7 998.3 997.0 998.5 1004.2 1012.6 1017.2 1017.3 1009.4 MAX. QFF PRESSURE IN HPA 1025.1 1031.4 1021.6 1020.7 1013.1 1003.4 1001.3 1004.4 1015.5 1019.0 1021.7 1023.7 1031.4 DAY 30 4 31 2 1 4 25 8 23 27 26 18 MIN. QFF PRESSURE IN HPA 1009.7 1009.5 1000.9 1007.0 998.9 993.6 989.8 990.8 997.0 1006.4 1012.0 1009.8 989.8 DAY 3 22 28 17 31 30 5 2 13 1 20 4 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 794.6 796.6 794.2 797.9 797.6 794.9 794.9 795.1 796.8 800.3 800.2 797.2 796.7 MAX. QFE PRESSURE IN HPA 798.2 801.0 798.7 802.0 801.2 797.2 798.3 798.2 802.8 804.1 804.1 801.3 804.1 DAY 15 8 8 9 6 4 20 26 23 27 28 1 MIN. QFE PRESSURE IN HPA 790.7 790.6 788.8 794.5 794.6 791.9 791.2 790.1 793.0 796.2 797.5 794.0 788.8 DAY 17 1 30 23 31 7 5 1 12 1 24 15 MEAN QNH PRESSURE IN HPA 1016.1 1018.6 1015.7 1020.2 1019.8 1016.5 1016.5 1016.7 1018.9 1023.1 1023.0 1019.3 1018.7 MAX. QNH PRESSURE IN HPA 1020.6 1024.0 1021.2 1025.2 1024.2 1019.3 1020.7 1020.6 1026.2 1027.8 1027.8 1024.3 1027.8 DAY 15 8 8 9 6 4 20 26 23 27 28 1 MIN. QNH PRESSURE IN HPA 1011.4 1011.3 1009.1 1016.0 1016.2 1012.9 1012.0 1010.7 1014.2 1018.1 1019.7 1015.4 1009.1 DAY 17 1 30 23 31 7 5 1 12 1 24 15 MEAN QFF PRESSURE IN HPA 1016.6 1018.8 1009.8 1010.9 1006.1 997.7 996.4 997.9 1002.9 1011.2 1016.1 1016.2 1008.4 MAX. QFF PRESSURE IN HPA 1023.3 1028.5 1019.0 1018.1 1013.6 1001.4 1001.3 1002.7 1014.4 1017.6 1021.7 1022.4 1028.5 DAY 18 6 31 2 6 2 29 8 23 27 28 18 MIN. QFF PRESSURE IN HPA 1009.3 1007.3 1003.0 1005.7 997.8 992.7 990.3 991.8 996.8 1005.1 1011.6 1010.2 990.3 DAY 2 22 28 23 31 30 5 1 11 1 17 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 795.3 797.2 794.9 798.2 797.7 794.8 794.7 794.9 796.8 800.8 801.0 798.0 797.0 MAX. QFE PRESSURE IN HPA 799.6 801.6 799.8 801.6 801.5 797.1 797.8 797.8 803.1 804.6 804.4 801.6 804.6 DAY 18 8 7 20 13 25 20 8 23 27 28 18 MIN. QFE PRESSURE IN HPA 791.4 790.7 789.3 794.8 794.8 792.7 790.9 789.6 792.9 796.6 798.0 794.5 789.3 DAY 17 22 29 23 31 16 5 1 12 1 24 31 MEAN QNH PRESSURE IN HPA 1017.0 1019.4 1016.6 1020.5 1020.0 1016.4 1016.3 1016.5 1018.9 1023.7 1024.0 1020.3 1019.1 MAX. QNH PRESSURE IN HPA 1022.3 1024.7 1022.5 1024.7 1024.6 1019.2 1020.1 1020.1 1026.5 1028.4 1028.1 1024.7 1028.4 DAY 18 8 7 20 13 25 20 8 23 27 28 18 MIN. QNH PRESSURE IN HPA 1012.3 1011.4 1009.7 1016.4 1016.4 1013.8 1011.6 1010.1 1014.1 1018.6 1020.3 1016.0 1009.7 DAY 17 22 29 23 31 16 5 1 12 1 24 31 MEAN QFF PRESSURE IN HPA 1019.8 1021.6 1012.5 1012.7 1006.7 998.0 996.7 998.7 1004.7 1014.3 1019.3 1019.4 1010.4 MAX. QFF PRESSURE IN HPA 1028.3 1031.2 1021.8 1020.0 1014.7 1001.9 1002.1 1004.4 1016.5 1020.7 1024.5 1026.4 1031.2 DAY 18 6 31 2 8 12 28 8 23 27 28 18 MIN. QFF PRESSURE IN HPA 1010.4 1006.1 1003.4 1007.8 998.7 993.5 990.7 992.1 998.3 1008.6 1013.3 1012.0 990.7 DAY 2 22 28 19 29 30 5 2 12 1 16 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 796.0 798.0 795.9 799.3 798.9 796.0 795.9 796.1 798.1 801.9 801.7 798.6 798.0 MAX. QFE PRESSURE IN HPA 800.2 802.1 801.0 802.4 802.1 798.6 798.9 799.0 804.1 805.6 805.7 802.9 805.7 DAY 18 25 7 8 13 3 20 7 23 26 28 18 MIN. QFE PRESSURE IN HPA 790.9 789.5 788.7 795.4 796.6 793.6 792.7 790.6 794.5 798.2 798.5 795.6 788.7 DAY 11 22 15 29 31 30 5 1 12 1 24 31 MEAN QNH PRESSURE IN HPA 1017.9 1020.3 1017.7 1021.9 1021.4 1017.9 1017.7 1018.0 1020.5 1025.0 1024.8 1021.0 1020.3 MAX. QNH PRESSURE IN HPA 1023.0 1025.3 1024.0 1025.7 1025.3 1021.0 1021.4 1021.5 1027.8 1029.6 1029.7 1026.3 1029.7 DAY 18 25 7 8 13 3 20 7 23 26 28 18 MIN. QNH PRESSURE IN HPA 1011.6 1009.9 1009.0 1017.1 1018.6 1014.9 1013.8 1011.3 1016.0 1020.6 1020.9 1017.4 1009.0 DAY 11 22 15 29 31 30 5 1 12 1 24 31 MEAN QFF PRESSURE IN HPA 1020.1 1021.7 1012.6 1012.1 1006.6 998.0 996.4 997.9 1004.1 1013.7 1018.8 1019.5 1010.1 MAX. QFF PRESSURE IN HPA 1029.7 1032.1 1021.5 1018.8 1013.4 1001.9 1001.5 1002.5 1016.3 1020.6 1024.0 1028.0 1032.1 DAY 18 7 31 2 1 3 22 7 23 26 28 18 MIN. QFF PRESSURE IN HPA 1009.3 1003.8 1000.5 1007.0 999.1 992.3 991.4 990.5 997.7 1007.5 1013.9 1011.6 990.5 DAY 11 22 15 17 31 30 5 1 13 1 6 4 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 795.6 797.7 795.8 799.2 799.0 796.1 796.1 796.4 798.4 801.8 801.5 798.2 798.0 MAX. QFE PRESSURE IN HPA 800.2 802.4 801.0 802.5 801.6 799.5 798.7 799.0 804.6 805.8 805.5 802.9 805.8 DAY 18 7 7 8 12 3 19 31 23 26 28 18 MIN. QFE PRESSURE IN HPA 789.7 789.2 788.1 795.3 795.8 793.9 792.8 790.9 794.8 798.2 798.5 795.0 788.1 DAY 11 22 29 29 31 8 5 1 12 1 11 31 MEAN QNH PRESSURE IN HPA 1017.4 1020.0 1017.6 1021.8 1021.5 1018.0 1018.0 1018.4 1020.8 1024.9 1024.6 1020.6 1020.3 MAX. QNH PRESSURE IN HPA 1023.0 1025.7 1024.0 1025.8 1024.7 1022.1 1021.2 1021.5 1028.4 1029.8 1029.5 1026.3 1029.8 DAY 18 7 7 8 12 3 19 31 23 26 28 18 MIN. QNH PRESSURE IN HPA 1010.2 1009.6 1008.2 1017.0 1017.6 1015.3 1014.0 1011.6 1016.4 1020.6 1020.9 1016.6 1008.2 DAY 11 22 29 29 31 8 5 1 12 1 11 31 MEAN QFF PRESSURE IN HPA 1017.7 1020.2 1011.4 1011.7 1006.7 998.3 997.2 998.4 1004.4 1012.6 1017.7 1017.6 1009.5 MAX. QFF PRESSURE IN HPA 1029.0 1030.8 1019.7 1019.3 1013.9 1003.6 1002.1 1003.5 1016.7 1019.1 1023.3 1025.9 1030.8 DAY 18 6 31 1 1 3 21 8 23 26 25 18 MIN. QFF PRESSURE IN HPA 1004.9 1003.5 1001.5 1005.2 998.0 992.9 991.5 990.2 997.5 1007.2 1011.1 1009.9 990.2 DAY 11 22 15 17 31 29 5 1 12 1 6 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.6 3.6 8.1 13.5 20.5 24.6 26.3 26.5 21.8 14.4 8.5 4.6 14.4 MINIMUN AIR TEMPERATURE (C) -5.1 -2.4 0.2 5.6 10.7 13.9 16.7 15.9 11.0 5.0 -1.0 -2.9 5.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 20 12 6 0 0 0 0 0 0 0 5 10 53 DAYS WITH FREEZING MIN.<= 0 29 23 15 3 0 0 0 0 0 1 18 25 114 TEMPERATURE RECORDS LOWEST(C) -10.8 -8.6 -8.0 -2.2 4.0 8.6 10.0 12.2 7.8 0.0 -4.6 -13.6 -13.6 DAY 26 27 22 6 14 1 19 16 21 30 20 28 MAXIMUM AIR TEMPERATURE (C) 6.7 9.8 15.8 20.9 28.5 33.0 33.6 34.5 30.9 23.3 18.2 12.6 22.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 10 27 31 31 19 0 0 0 118 DAYS WITH MAXIMUM TEMP. <= 0 1 0 0 0 0 0 0 0 0 0 0 1 2 TEMPERATURE RECORDS HIGHEST(C) 11.4 13.6 22.4 26.6 33.0 36.8 36.6 37.0 34.4 28.4 22.2 19.0 37.0 DAY 1 17 12 13 22 30 3 12 2 2 11 6 DIF. BETWEEN (MAX.-MIN.) (C) 11.8 12.2 15.6 15.3 17.8 19.1 16.9 18.6 19.9 18.3 19.2 15.5 16.7 MEAN DAILY TEMP. (MDT) (C) 0.8 3.7 8.0 13.3 19.6 23.4 25.1 25.2 21.0 14.1 8.6 4.8 14.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 11.9 79.9 129.2 131.0 32.9 0.0 0.0 0.0 384.9 HEATING DEG. DAYS(BASE 18 0C) 533.0 401.4 309.5 143.1 10.2 0.7 0.0 0.0 0.3 121.9 281.9 408.1 2210.1 DEWPOINT (MEAN C) -9.2 -7.1 -7.7 -7.2 -7.7 -6.6 0.3 -1.5 -6.5 -5.0 -8.5 -8.6 -6.3 MIXING RATIO (G/KG) 2.56 3.04 2.88 3.15 2.89 3.11 5.30 4.48 3.17 3.40 2.65 2.61 3.27 VAPOUR PRESSURE (HPA) 3.26 3.86 3.68 4.02 3.69 3.96 6.70 5.69 4.04 4.35 3.40 3.34 4.17 SATURATION DEF. (HPA) 3.42 4.41 7.95 12.54 21.90 29.15 28.98 30.72 24.23 13.36 8.72 5.92 15.94 RELATIVE HUMIDITY (MEAN %) 51 50 38 29 17 14 21 18 16 29 34 44 30 RELATIVE HUMIDITY (MAX. %) 68 72 63 50 32 24 33 29 25 49 52 64 47 RELATIVE HUMIDITY (MIN. %) 33 28 17 14 7 6 13 10 9 15 16 23 16 RELATIVE HUMIDITY (MEAN% 03UTC) 61 65 57 42 29 23 30 27 24 43 49 58 42 RELATIVE HUMIDITY (MEAN% 09UTC) 40 38 22 18 9 8 15 12 10 17 20 26 20 RELATIVE HUMIDITY (MEAN% 15UTC) 48 44 28 17 9 8 15 12 10 22 28 39 23 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 19.7 26.0 2.4 9.7 0.3 0.0 0.0 0.0 0.0 0.0 1.6 10.4 70.1 DAYS WITH PRECIPITATION >=10 0 1 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 1 2 0 1 0 0 0 0 0 0 0 1 5 DAYS WITH PRECIPITATION >= 1 6 4 1 2 0 0 0 0 0 0 1 2 16 DAYS WITH PRECIPITATION 12 6 4 5 3 0 1 0 0 0 1 4 36 GREATEST DAILY PRECIPITATION 8.6 13.1 2.2 6.5 0.2 0.0 0.0 0.0 0.0 0.0 1.6 8.0 13.1 DAY 5 5 14 3 12 ** ** ** ** ** 28 21 DAY WITH THUNDER STORM 0 0 0 0 1 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 8 0 1 0 0 0 0 0 0 0 0 3 12 DAYS WITH DUST 0 3 1 4 3 0 6 0 0 2 0 0 19 WIND DIRECTION (PREVAILING) 225 225 225 270 270 315 360 360 315 315 315 225 360 PREVAILING WIND SPEED(KNOTS) 16.5 14.8 16.8 11.1 9.3 6.5 15.0 12.0 6.4 6.2 5.8 14.1 11.0 PREVAILING WIND PERCENT 19.8 21.6 19.4 23.3 16.5 15.0 28.6 14.9 19.2 16.5 17.5 12.9 12.9 CALMS PERCENT OF WIND 46.4 39.9 37.1 41.7 41.9 43.3 31.9 46.4 45.0 51.6 65.4 60.1 45.9 NO. OF WIND OBSERVATION 248 218 248 240 248 240 248 248 240 248 240 248 2914 VECTOR WIND DIRECTION (MEAN) 248 233 268 257 297 307 2 354 324 310 332 267 288 VECTOR WIND MAGNITUDE(KNOTS) 3.7 4.6 3.7 4.5 2.8 2.3 5.2 1.8 1.7 2.5 1.6 2.6 2.3 WIND STEADINESES (MEAN %) 59.7 67.6 46.8 68.2 47.5 42.6 64.2 32.1 34.7 58.1 64.0 60.5 40.4 WIND SPEED (MEAN KNOTS) 6.2 6.8 7.9 6.6 5.9 5.4 8.1 5.6 4.9 4.3 2.5 4.3 5.7 FASTEST WIND DIRECTION 210 210 240 200 210 360 360 360 220 250 30 210 360 FASTEST WIND SPEED (KNOTS) 39 49 39 49 29 19 29 58 23 29 23 29 58 DAY 24 15 11 2 12 3 5 5 3 14 20 21 DAYS WITH SKY CLEAR (0-2)/8 17 20 20 12 25 26 21 23 30 23 26 16 259 DAYS WITH P.CLOUDY (3-6)/8 10 5 11 13 6 4 9 8 0 8 4 12 90 DAYS WITH CLOUDY (7-8)/8 4 3 0 5 0 0 1 0 0 0 0 3 16 DAYS WITH VISIBILITY =< 2 KM 7 0 0 0 0 0 0 0 0 0 0 1 8 DURATION OF SUNSHINE HOURS 239.0 245.3 295.9 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 796.8 794.6 798.5 796.7 797.6 795.8 794.4 795.8 798.0 801.5 801.8 799.2 797.6 MAX. QFE PRESSURE IN HPA 804.5 801.9 806.5 802.0 802.6 801.3 799.4 800.4 803.0 807.0 808.4 806.6 808.4 DAY-HOUR 26- 6 8- 6 10- 6 25- 6 18- 6 5- 6 15- 6 4- 6 27- 6 19- 6 23- 6 5- 6 MIN. QFE PRESSURE IN HPA 791.0 788.0 791.9 789.9 789.7 790.4 787.5 791.6 792.9 795.3 795.2 790.3 787.5 DAY-HOUR 17-12 16- 0 19-12 6-12 12-15 26-15 5-12 8-15 4-12 1-12 1-12 25-15 MEAN QNH PRESSURE IN HPA 1018.9 1016.2 1020.9 1018.7 1019.8 1017.6 1015.9 1017.6 1020.3 1024.6 1025.0 1021.8 1019.8 MAX. QNH PRESSURE IN HPA 1028.2 1025.1 1030.7 1025.2 1025.9 1024.3 1022.0 1023.2 1026.4 1031.3 1033.0 1030.8 1033.0 DAY-HOUR 26- 6 8- 6 10- 6 25- 6 18- 6 5- 6 15- 6 4- 6 27- 6 19- 6 23- 6 5- 6 MIN. QNH PRESSURE IN HPA 1011.8 1008.1 1012.9 1010.4 1010.2 1011.0 1007.5 1012.5 1014.1 1017.0 1016.9 1010.9 1007.5 DAY-HOUR 17-12 16- 0 19-12 6-12 12-15 26-15 5-12 8-15 4-12 1-12 1-12 25-15 MEAN QFF PRESSURE IN HPA 1019.7 1014.3 1015.4 1008.5 1004.1 998.8 995.4 997.1 1003.6 1013.7 1019.2 1019.3 1009.1 MAX. QFF PRESSURE IN HPA 1034.1 1026.2 1029.5 1017.0 1011.0 1010.5 1003.9 1003.1 1013.3 1024.9 1030.8 1039.4 1039.4 DAY-HOUR 26- 6 8- 6 21- 6 8- 3 16- 3 1- 3 15- 3 4- 3 26- 3 19- 3 24- 3 28- 6 MIN. QFF PRESSURE IN HPA 1008.3 1003.4 1005.2 997.3 993.7 989.7 986.3 992.2 994.4 1000.8 1008.8 1005.8 986.3 DAY-HOUR 1-21 15-18 19-12 16- 9 12-18 26-12 5-12 27-12 5-12 1-12 1-12 25-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 796.4 794.4 798.2 796.4 797.7 796.0 794.5 795.9 798.0 801.6 801.7 799.1 797.5 MAX. QFE PRESSURE IN HPA 803.0 800.0 804.8 801.0 800.7 800.5 798.4 799.1 801.1 805.5 806.5 805.0 806.5 DAY 20 1 10 25 17 5 16 4 27 19 23 5 MIN. QFE PRESSURE IN HPA 791.4 788.0 794.1 791.5 790.6 792.2 789.1 793.1 794.8 797.2 796.8 790.6 788.0 DAY 18 16 19 10 13 26 5 1 4 1 1 26 MEAN QNH PRESSURE IN HPA 1018.3 1015.9 1020.6 1018.4 1019.9 1017.9 1016.0 1017.7 1020.3 1024.7 1024.8 1021.6 1019.7 MAX. QNH PRESSURE IN HPA 1026.4 1022.8 1028.6 1024.0 1023.6 1023.4 1020.8 1021.7 1024.1 1029.5 1030.7 1028.9 1030.7 DAY 20 1 10 25 17 5 16 4 27 19 23 5 MIN. QNH PRESSURE IN HPA 1012.3 1008.1 1015.6 1012.4 1011.3 1013.2 1009.4 1014.3 1016.4 1019.3 1018.8 1011.3 1008.1 DAY 18 16 19 10 13 26 5 1 4 1 1 26 MEAN QFF PRESSURE IN HPA 1018.4 1013.6 1014.3 1008.0 1004.2 999.7 995.8 997.5 1003.4 1013.3 1018.1 1018.0 1008.7 MAX. QFF PRESSURE IN HPA 1029.4 1023.3 1024.3 1015.6 1009.7 1008.7 1000.6 1002.0 1010.4 1022.4 1027.4 1034.7 1034.7 DAY 20 8 21 25 16 1 16 16 26 19 24 29 MIN. QFF PRESSURE IN HPA 1008.5 1005.0 1007.6 999.4 996.2 991.2 987.8 994.1 997.1 1002.6 1010.5 1007.1 987.8 DAY 2 16 19 16 13 26 5 1 6 1 1 26 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 796.8 794.8 798.8 797.2 798.5 796.9 795.2 796.6 798.8 802.2 802.3 799.6 798.1 MAX. QFE PRESSURE IN HPA 803.2 800.8 805.1 801.4 801.7 801.2 799.2 799.7 802.0 805.9 807.2 805.7 807.2 DAY 20 8 10 25 18 5 15 4 27 19 23 5 MIN. QFE PRESSURE IN HPA 792.1 788.6 794.2 792.4 791.0 792.7 789.7 794.5 795.7 797.9 797.5 791.4 788.6 DAY 18 16 19 16 13 27 5 1 4 1 1 26 MEAN QNH PRESSURE IN HPA 1018.8 1016.4 1021.3 1019.3 1020.9 1018.9 1016.9 1018.6 1021.3 1025.4 1025.5 1022.3 1020.5 MAX. QNH PRESSURE IN HPA 1026.7 1023.7 1029.0 1024.5 1024.8 1024.2 1021.8 1022.4 1025.2 1030.0 1031.5 1029.7 1031.5 DAY 20 8 10 25 18 5 15 4 27 19 23 5 MIN. QNH PRESSURE IN HPA 1013.1 1008.8 1015.7 1013.5 1011.8 1013.8 1010.2 1016.0 1017.5 1020.2 1019.7 1012.3 1008.8 DAY 18 16 19 16 13 27 5 1 4 1 1 26 MEAN QFF PRESSURE IN HPA 1020.8 1015.8 1017.4 1010.0 1006.0 1001.1 997.4 999.5 1006.3 1016.5 1021.8 1021.5 1011.2 MAX. QFF PRESSURE IN HPA 1033.4 1025.5 1028.0 1017.0 1011.0 1010.5 1003.9 1003.1 1013.3 1024.9 1030.8 1038.9 1038.9 DAY 20 8 21 8 16 1 15 4 26 19 24 28 MIN. QFF PRESSURE IN HPA 1010.7 1006.9 1009.8 1000.2 998.6 994.0 988.6 996.4 1000.1 1006.4 1014.3 1008.8 988.6 DAY 2 10 14 16 13 30 5 26 5 1 1 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 798.0 795.8 799.9 797.9 798.9 797.1 795.6 797.2 799.5 803.0 803.4 800.6 798.9 MAX. QFE PRESSURE IN HPA 804.5 801.9 806.5 802.0 802.6 801.3 799.4 800.4 803.0 807.0 808.4 806.6 808.4 DAY 26 8 10 25 18 5 15 4 27 19 23 5 MIN. QFE PRESSURE IN HPA 793.1 790.7 794.8 792.4 791.6 793.0 790.4 794.8 795.8 798.6 798.3 793.4 790.4 DAY 17 10 19 16 13 26 5 1 4 1 1 25 MEAN QNH PRESSURE IN HPA 1020.3 1017.6 1022.6 1020.1 1021.4 1019.2 1017.4 1019.3 1022.2 1026.5 1026.9 1023.5 1021.4 MAX. QNH PRESSURE IN HPA 1028.2 1025.1 1030.7 1025.2 1025.9 1024.3 1022.0 1023.2 1026.4 1031.3 1033.0 1030.8 1033.0 DAY 26 8 10 25 18 5 15 4 27 19 23 5 MIN. QNH PRESSURE IN HPA 1014.3 1011.4 1016.4 1013.5 1012.5 1014.2 1011.0 1016.4 1017.6 1021.0 1020.7 1014.7 1011.0 DAY 17 10 19 16 13 26 5 1 4 1 1 25 MEAN QFF PRESSURE IN HPA 1021.7 1015.9 1017.2 1009.8 1005.2 999.5 996.3 997.9 1004.9 1015.0 1021.5 1021.7 1010.6 MAX. QFF PRESSURE IN HPA 1034.1 1026.2 1029.5 1016.8 1010.3 1009.4 1000.9 1001.6 1011.9 1023.4 1030.0 1039.4 1039.4 DAY 26 8 21 8 16 1 15 4 27 19 23 28 MIN. QFF PRESSURE IN HPA 1012.5 1007.1 1009.2 999.7 998.5 991.5 989.3 994.3 997.7 1005.2 1012.5 1011.7 989.3 DAY 2 10 19 16 12 26 4 1 4 1 1 25 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 796.8 794.8 798.7 796.7 797.8 796.0 794.6 796.0 798.2 801.4 801.6 799.0 797.6 MAX. QFE PRESSURE IN HPA 803.5 800.4 805.3 801.4 801.6 800.7 798.9 799.5 801.8 805.4 806.8 805.0 806.8 DAY 26 8 10 26 18 4 15 4 26 19 23 5 MIN. QFE PRESSURE IN HPA 791.7 788.9 793.4 790.9 791.4 792.2 789.1 793.7 794.3 796.9 796.2 792.0 788.9 DAY 17 10 19 16 13 27 5 9 4 1 1 25 MEAN QNH PRESSURE IN HPA 1018.9 1016.4 1021.1 1018.8 1020.0 1017.9 1016.1 1017.8 1020.5 1024.4 1024.7 1021.6 1019.9 MAX. QNH PRESSURE IN HPA 1027.0 1023.2 1029.2 1024.5 1024.7 1023.6 1021.4 1022.1 1025.0 1029.3 1031.0 1028.9 1031.0 DAY 26 8 10 26 18 4 15 4 26 19 23 5 MIN. QNH PRESSURE IN HPA 1012.6 1009.2 1014.7 1011.6 1012.3 1013.2 1009.4 1015.1 1015.8 1019.0 1018.1 1013.0 1009.2 DAY 17 10 19 16 13 27 5 9 4 1 1 25 MEAN QFF PRESSURE IN HPA 1018.9 1013.9 1014.8 1008.2 1004.1 998.6 995.1 996.6 1002.8 1012.6 1017.3 1017.8 1008.4 MAX. QFF PRESSURE IN HPA 1032.0 1023.3 1026.6 1015.6 1009.5 1007.7 999.9 1001.3 1010.1 1021.3 1026.3 1037.1 1037.1 DAY 26 8 21 24 16 1 15 16 26 19 23 28 MIN. QFF PRESSURE IN HPA 1011.9 1005.2 1007.5 997.3 995.9 991.8 987.4 992.7 994.9 1002.4 1009.1 1007.9 987.4 DAY 15 10 19 16 12 27 12 26 4 1 1 25 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 795.8 793.3 797.1 795.4 796.2 794.7 793.2 794.6 796.6 800.1 800.4 797.8 796.3 MAX. QFE PRESSURE IN HPA 802.1 798.9 803.0 800.0 799.7 799.9 797.7 798.0 800.6 803.8 805.7 803.4 805.7 DAY 26 8 9 25 16 4 15 4 27 19 23 5 MIN. QFE PRESSURE IN HPA 791.0 788.4 791.9 789.9 790.2 790.8 787.5 792.0 792.9 795.3 795.2 790.7 787.5 DAY 17 10 19 6 12 26 5 8 4 1 1 25 MEAN QNH PRESSURE IN HPA 1017.6 1014.6 1019.2 1017.2 1018.1 1016.3 1014.5 1016.1 1018.7 1022.8 1023.2 1020.1 1018.2 MAX. QNH PRESSURE IN HPA 1025.3 1021.4 1026.4 1022.8 1022.4 1022.6 1019.9 1020.3 1023.5 1027.4 1029.7 1026.9 1029.7 DAY 26 8 9 25 16 4 15 4 27 19 23 5 MIN. QNH PRESSURE IN HPA 1011.8 1008.6 1012.9 1010.4 1010.8 1011.5 1007.5 1013.0 1014.1 1017.0 1016.9 1011.4 1007.5 DAY 17 10 19 6 12 26 5 8 4 1 1 25 MEAN QFF PRESSURE IN HPA 1017.6 1012.4 1012.9 1006.7 1002.6 997.9 994.3 995.9 1001.7 1011.5 1016.4 1016.4 1007.2 MAX. QFF PRESSURE IN HPA 1029.8 1021.3 1023.4 1012.6 1008.5 1007.0 999.6 1000.8 1009.9 1019.6 1025.7 1033.4 1033.4 DAY 26 8 21 25 16 1 15 5 27 19 23 28 MIN. QFF PRESSURE IN HPA 1011.4 1005.7 1005.2 998.7 994.9 989.7 986.3 992.2 994.4 1000.8 1008.8 1007.3 986.3 DAY 2 10 19 16 12 26 5 27 5 1 1 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 796.6 794.1 797.9 795.8 796.2 794.3 793.0 794.3 796.7 800.6 801.3 798.7 796.6 MAX. QFE PRESSURE IN HPA 802.7 799.2 803.9 799.4 799.9 799.4 797.1 797.7 800.4 804.6 806.4 804.5 806.4 DAY 26 8 9 24 16 4 15 4 26 19 23 5 MIN. QFE PRESSURE IN HPA 791.5 788.9 792.5 790.8 789.7 790.4 787.7 791.6 792.9 795.7 795.3 790.3 787.7 DAY 17 10 19 9 12 26 4 8 4 1 1 25 MEAN QNH PRESSURE IN HPA 1018.6 1015.6 1020.2 1017.6 1018.2 1015.7 1014.2 1015.8 1018.7 1023.4 1024.3 1021.2 1018.6 MAX. QNH PRESSURE IN HPA 1026.0 1021.8 1027.5 1022.0 1022.6 1022.0 1019.2 1019.9 1023.2 1028.4 1030.6 1028.2 1030.6 DAY 26 8 9 24 16 4 15 4 26 19 23 5 MIN. QNH PRESSURE IN HPA 1012.4 1009.2 1013.6 1011.5 1010.2 1011.0 1007.7 1012.5 1014.1 1017.5 1017.0 1010.9 1007.7 DAY 17 10 19 9 12 26 4 8 4 1 1 25 MEAN QFF PRESSURE IN HPA 1020.6 1015.1 1016.2 1008.3 1003.3 997.7 994.7 996.6 1003.6 1014.5 1020.5 1020.3 1009.3 MAX. QFF PRESSURE IN HPA 1033.0 1022.9 1025.6 1014.1 1009.1 1007.3 1000.1 1000.3 1011.3 1022.8 1029.2 1037.1 1037.1 DAY 26 8 21 7 16 1 19 16 26 19 23 28 MIN. QFF PRESSURE IN HPA 1012.5 1006.6 1008.4 999.8 996.6 989.9 986.6 993.5 996.7 1004.6 1012.0 1006.8 986.6 DAY 1 10 19 15 12 30 4 25 4 1 1 25 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 797.3 794.9 798.8 797.2 797.8 795.6 794.4 795.7 798.0 801.8 802.1 799.6 797.8 MAX. QFE PRESSURE IN HPA 803.5 800.1 805.3 801.6 800.7 800.5 798.3 799.5 801.3 805.6 806.8 805.7 806.8 DAY 26 7 9 24 16 4 15 4 26 18 23 5 MIN. QFE PRESSURE IN HPA 792.0 788.1 793.6 792.1 790.0 791.7 789.2 792.7 794.7 797.7 796.4 790.7 788.1 DAY 17 15 19 9 12 26 4 8 4 1 1 25 MEAN QNH PRESSURE IN HPA 1019.5 1016.6 1021.3 1019.3 1020.1 1017.4 1015.9 1017.5 1020.3 1024.9 1025.3 1022.2 1020.0 MAX. QNH PRESSURE IN HPA 1027.0 1022.9 1029.2 1024.7 1023.6 1023.4 1020.7 1022.1 1024.3 1029.6 1031.0 1029.7 1031.0 DAY 26 7 9 24 16 4 15 4 26 18 23 5 MIN. QNH PRESSURE IN HPA 1013.0 1008.2 1014.9 1013.1 1010.5 1012.6 1009.6 1013.8 1016.3 1019.9 1018.4 1011.4 1008.2 DAY 17 15 19 9 12 26 4 8 4 1 1 25 MEAN QFF PRESSURE IN HPA 1020.8 1014.6 1015.7 1008.9 1003.9 997.6 994.7 996.2 1003.1 1013.6 1020.0 1020.4 1009.1 MAX. QFF PRESSURE IN HPA 1033.6 1023.9 1025.6 1015.4 1008.4 1008.0 1000.1 1000.3 1009.5 1021.9 1028.5 1038.4 1038.4 DAY 26 7 21 24 16 1 17 4 26 19 23 28 MIN. QFF PRESSURE IN HPA 1010.1 1003.4 1009.2 1000.4 993.7 990.1 986.9 992.7 996.0 1005.9 1011.1 1006.7 986.9 DAY 1 15 24 15 12 30 4 26 4 1 1 25 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 797.0 794.7 798.6 797.0 797.9 795.8 794.6 796.1 798.1 801.7 802.0 799.3 797.7 MAX. QFE PRESSURE IN HPA 802.7 800.2 805.3 801.5 800.9 800.7 798.8 799.8 801.2 805.9 806.7 805.0 806.7 DAY 19 7 9 24 18 4 15 4 27 18 22 5 MIN. QFE PRESSURE IN HPA 791.4 788.2 794.7 792.5 790.6 791.9 789.2 793.2 795.1 797.7 796.9 790.4 788.2 DAY 17 15 19 9 12 26 4 8 3 31 1 25 MEAN QNH PRESSURE IN HPA 1019.0 1016.3 1021.1 1019.1 1020.2 1017.7 1016.2 1017.9 1020.5 1024.8 1025.1 1021.9 1020.0 MAX. QNH PRESSURE IN HPA 1026.0 1023.0 1029.2 1024.6 1023.8 1023.6 1021.3 1022.5 1024.2 1030.0 1030.9 1028.9 1030.9 DAY 19 7 9 24 18 4 15 4 27 18 22 5 MIN. QNH PRESSURE IN HPA 1012.3 1008.3 1016.3 1013.6 1011.3 1012.9 1009.6 1014.5 1016.8 1019.9 1019.0 1011.0 1008.3 DAY 17 15 19 9 12 26 4 8 3 31 1 25 MEAN QFF PRESSURE IN HPA 1019.1 1013.7 1014.6 1008.4 1004.1 998.2 995.1 996.7 1002.9 1013.2 1018.0 1018.1 1008.5 MAX. QFF PRESSURE IN HPA 1031.1 1023.6 1024.5 1016.3 1009.2 1007.0 1000.9 1001.0 1009.3 1022.0 1026.8 1036.4 1036.4 DAY 26 7 21 24 15 1 17 4 25 18 23 28 MIN. QFF PRESSURE IN HPA 1008.3 1003.7 1008.8 999.1 994.7 990.4 987.4 992.3 995.6 1005.8 1011.1 1005.8 987.4 DAY 1 15 31 15 12 30 4 25 3 1 1 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.7 3.3 7.9 14.4 18.7 26.4 29.5 25.6 20.6 13.8 8.0 4.6 14.6 MINIMUN AIR TEMPERATURE (C) -2.9 -2.9 2.2 6.5 9.7 13.6 16.4 14.4 10.3 5.7 -0.3 -0.2 6.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 14 14 0 0 0 0 0 0 0 0 3 7 38 DAYS WITH FREEZING MIN.<= 0 21 19 11 1 0 0 0 0 0 0 19 17 88 TEMPERATURE RECORDS LOWEST(C) -9.0 -11.0 -2.8 -0.2 4.2 9.4 14.4 10.2 3.4 1.4 -6.2 -7.2 -11.0 DAY 7 14 4 13 24 1 15 25 28 25 17 30 MAXIMUM AIR TEMPERATURE (C) 8.7 10.1 14.1 21.9 26.7 32.1 35.6 33.9 29.7 22.1 16.7 10.4 21.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 3 25 31 31 21 0 0 0 111 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 13.0 14.6 21.4 28.0 32.0 34.8 39.6 36.4 35.2 24.4 21.6 16.0 39.6 DAY 23 27 22 28 30 28 10 7 9 8 1 9 DIF. BETWEEN (MAX.-MIN.) (C) 11.6 13.0 11.9 15.4 17.0 18.5 19.2 19.5 19.4 16.4 17.0 10.6 15.8 MEAN DAILY TEMP. (MDT) (C) 2.9 3.6 8.1 14.2 18.2 22.9 26.0 24.1 20.0 13.9 8.2 5.1 13.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 4.9 57.5 155.2 97.5 16.5 0.0 0.0 0.0 331.6 HEATING DEG. DAYS(BASE 18 0C) 467.6 403.3 305.9 116.7 27.0 0.0 0.0 0.0 17.9 127.5 293.7 399.2 2158.8 DEWPOINT (MEAN C) -6.1 -9.4 -2.2 -3.8 -4.8 -3.9 -3.0 -6.1 -7.2 -1.9 -7.3 -4.7 -5.0 MIXING RATIO (G/KG) 3.32 2.66 4.38 3.92 3.60 3.83 4.07 3.27 3.09 4.45 2.85 3.67 3.59 VAPOUR PRESSURE (HPA) 4.22 3.38 5.56 4.99 4.58 4.87 5.16 4.16 3.94 5.69 3.65 4.67 4.57 SATURATION DEF. (HPA) 3.57 4.86 5.55 12.43 18.40 31.05 38.04 30.80 22.41 10.97 7.94 4.22 15.85 RELATIVE HUMIDITY (MEAN %) 56 44 54 33 24 16 14 14 19 39 38 56 34 RELATIVE HUMIDITY (MAX. %) 77 67 78 57 40 29 27 24 35 61 58 76 52 RELATIVE HUMIDITY (MIN. %) 35 22 31 15 10 9 8 7 9 20 18 33 18 RELATIVE HUMIDITY (MEAN% 03UTC) 66 61 72 50 38 29 27 23 31 57 57 70 48 RELATIVE HUMIDITY (MEAN% 09UTC) 41 30 38 18 13 12 10 9 11 23 22 40 22 RELATIVE HUMIDITY (MEAN% 15UTC) 53 35 45 23 14 11 9 8 11 29 29 51 27 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 25.4 15.1 61.2 2.8 0.0 0.3 0.0 0.0 0.0 10.3 0.0 132.7 247.8 DAYS WITH PRECIPITATION >=10 0 1 2 0 0 0 0 0 0 0 0 3 6 DAYS WITH PRECIPITATION >= 5 2 1 3 0 0 0 0 0 0 1 0 3 10 DAYS WITH PRECIPITATION >= 1 5 1 7 1 0 0 0 0 0 4 0 5 23 DAYS WITH PRECIPITATION 9 4 12 5 0 3 0 0 0 8 0 12 53 GREATEST DAILY PRECIPITATION 9.0 14.0 26.2 2.0 0.0 0.2 0.0 0.0 0.0 6.4 0.0 61.0 61.0 DAY 19 28 6 9 ** 26 ** ** ** 2 ** 13 DAY WITH THUNDER STORM 0 1 6 2 0 2 0 0 0 4 0 6 21 DAYS WITH SNOW OR SLEET 2 1 1 0 0 0 0 0 0 0 0 0 4 DAYS WITH DUST 2 1 7 10 11 6 8 5 1 1 0 2 54 WIND DIRECTION (PREVAILING) 225 225 270 360 270 360 360 360 315 360 360 225 360 PREVAILING WIND SPEED(KNOTS) 13.4 16.5 11.3 12.4 14.7 14.5 13.5 10.9 6.5 8.0 8.0 14.7 10.8 PREVAILING WIND PERCENT 14.5 18.8 12.9 12.9 24.9 26.0 22.6 19.1 19.2 14.9 12.1 23.0 12.9 CALMS PERCENT OF WIND 56.9 55.8 56.0 54.6 43.5 42.7 41.3 46.8 46.3 58.1 61.3 56.5 52.3 NO. OF WIND OBSERVATION 248 224 248 240 237 150 155 220 240 248 240 248 2698 VECTOR WIND DIRECTION (MEAN) 251 246 255 288 282 326 3 353 340 313 332 226 295 VECTOR WIND MAGNITUDE(KNOTS) 2.5 3.6 2.6 3.0 4.9 3.8 4.3 3.0 2.7 1.7 1.2 4.1 2.2 WIND STEADINESES (MEAN %) 61.0 61.0 48.1 54.5 68.1 52.1 66.2 65.2 62.8 50.0 42.9 73.2 42.3 WIND SPEED (MEAN KNOTS) 4.1 5.9 5.4 5.5 7.2 7.3 6.5 4.6 4.3 3.4 2.8 5.6 5.2 FASTEST WIND DIRECTION 360 250 290 250 360 350 360 350 310 250 230 240 250 FASTEST WIND SPEED (KNOTS) 23 33 33 39 31 35 33 29 31 23 19 39 39 DAY 6 28 15 4 2 18 11 13 25 1 4 22 DAYS WITH SKY CLEAR (0-2)/8 17 12 10 12 18 25 31 31 28 21 22 12 239 DAYS WITH P.CLOUDY (3-6)/8 9 10 14 13 11 5 0 0 2 9 8 16 97 DAYS WITH CLOUDY (7-8)/8 5 6 7 5 2 0 0 0 0 1 0 3 29 DAYS WITH VISIBILITY =< 2 KM 0 1 1 0 1 0 1 0 0 1 0 2 7 DURATION OF SUNSHINE HOURS ****** 221.9 220.6 259.7 332.4 342.6 360.3 353.2 304.6 259.4 245.4 185.2 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 797.2 796.7 795.6 798.2 796.0 795.6 793.7 795.5 799.6 801.7 801.3 797.6 797.4 MAX. QFE PRESSURE IN HPA 804.3 806.1 801.9 803.4 800.5 801.1 798.7 800.1 803.2 805.8 805.5 804.8 806.1 DAY-HOUR 13- 6 15- 6 29- 6 19- 6 9- 6 23- 6 1- 6 23- 6 17- 6 20- 6 2- 6 8- 6 MIN. QFE PRESSURE IN HPA 788.3 789.3 787.9 792.0 790.0 789.9 788.2 790.4 794.4 797.3 796.2 789.5 787.9 DAY-HOUR 25-15 8-12 6-18 12-12 23- 0 12-12 14-12 11-12 3-12 4-12 6-12 22- 3 MEAN QNH PRESSURE IN HPA 1019.3 1018.7 1017.4 1020.5 1017.8 1017.4 1015.1 1017.2 1022.3 1024.8 1024.4 1019.8 1019.6 MAX. QNH PRESSURE IN HPA 1028.0 1030.2 1025.1 1026.9 1023.4 1024.1 1021.2 1022.9 1026.7 1029.8 1029.5 1028.6 1030.2 DAY-HOUR 13- 6 15- 6 29- 6 19- 6 9- 6 23- 6 1- 6 23- 6 17- 6 20- 6 2- 6 8- 6 MIN. QNH PRESSURE IN HPA 1008.5 1009.7 1008.0 1013.0 1010.5 1010.4 1008.3 1011.0 1015.9 1019.5 1018.1 1009.9 1008.0 DAY-HOUR 25-15 8-12 6-18 12-12 23- 0 12-12 14-12 11-12 3-12 4-12 6-12 22- 3 MEAN QFF PRESSURE IN HPA 1018.2 1017.1 1011.7 1009.6 1003.7 ****** ****** 998.1 1006.5 1014.4 1019.0 1017.0 ****** MAX. QFF PRESSURE IN HPA 1031.2 1035.0 1022.9 1017.5 1012.1 ****** ****** 1004.9 1017.7 1022.0 1027.8 1027.9 ****** DAY-HOUR 12- 6 15- 3 17- 6 20- 3 25- 6 **-** **-** 23- 3 28- 3 28- 3 24- 6 17-18 MIN. QFF PRESSURE IN HPA 1004.9 1005.6 1001.2 1000.8 994.7 ****** ****** 989.5 997.5 1006.4 1007.9 1006.4 ****** DAY-HOUR 25-12 7-12 6-21 28-12 23- 0 **-** **-** 11-12 8-12 15-12 6-12 1-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 797.0 796.5 795.3 798.1 795.9 ****** ****** 795.3 799.6 801.6 801.4 797.4 ****** MAX. QFE PRESSURE IN HPA 802.8 804.5 800.0 802.2 799.4 ****** ****** 798.6 801.7 804.7 803.8 803.7 ****** DAY 13 16 30 19 9 ** ** 23 17 28 13 8 MIN. QFE PRESSURE IN HPA 788.3 790.0 788.8 794.1 790.0 ****** ****** 792.3 796.1 799.0 798.1 790.6 ****** DAY 26 21 7 11 23 ** ** 13 4 5 16 22 MEAN QNH PRESSURE IN HPA 1019.1 1018.5 1017.0 1020.4 1017.8 ****** ****** 1017.1 1022.3 1024.7 1024.4 1019.6 ****** MAX. QNH PRESSURE IN HPA 1026.2 1028.2 1022.8 1025.4 1022.0 ****** ****** 1021.0 1024.8 1028.5 1027.4 1027.3 ****** DAY 13 16 30 19 9 ** ** 23 17 28 13 8 MIN. QNH PRESSURE IN HPA 1008.5 1010.5 1009.1 1015.6 1010.5 ****** ****** 1013.4 1018.0 1021.5 1020.4 1011.3 ****** DAY 26 21 7 11 23 ** ** 13 4 5 16 22 MEAN QFF PRESSURE IN HPA 1017.1 1016.1 1010.9 1009.3 1003.6 ****** ****** 997.9 1006.1 1013.7 1018.2 1016.2 ****** MAX. QFF PRESSURE IN HPA 1027.0 1030.7 1018.4 1015.6 1008.6 ****** ****** 1002.8 1015.2 1019.1 1024.9 1026.3 ****** DAY 12 15 18 20 9 ** ** 24 28 28 17 18 MIN. QFF PRESSURE IN HPA 1006.4 1005.8 1004.6 1004.0 994.7 ****** ****** 992.5 999.8 1008.9 1011.2 1007.6 ****** DAY 24 21 6 28 23 ** ** 12 8 15 6 22 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 797.3 796.9 795.9 798.8 796.7 796.6 794.9 796.4 800.3 802.2 801.9 797.7 798.0 MAX. QFE PRESSURE IN HPA 803.1 804.7 800.5 802.7 800.3 801.0 798.2 799.9 802.6 805.2 804.1 803.6 805.2 DAY 13 15 18 19 9 23 1 23 17 28 13 8 MIN. QFE PRESSURE IN HPA 789.0 790.7 789.7 794.5 790.6 792.0 790.4 793.2 797.0 799.0 798.6 789.5 789.0 DAY 26 8 7 10 23 12 14 12 3 15 8 22 MEAN QNH PRESSURE IN HPA 1019.5 1019.0 1017.7 1021.3 1018.7 1018.6 1016.5 1018.4 1023.2 1025.4 1025.1 1019.9 1020.3 MAX. QNH PRESSURE IN HPA 1026.5 1028.5 1023.4 1026.0 1023.1 1024.0 1020.6 1022.6 1025.9 1029.1 1027.8 1027.1 1029.1 DAY 13 15 18 19 9 23 1 23 17 28 13 8 MIN. QNH PRESSURE IN HPA 1009.3 1011.4 1010.2 1016.0 1011.3 1013.0 1011.0 1014.5 1019.1 1021.5 1021.0 1009.9 1009.3 DAY 26 8 7 10 23 12 14 12 3 15 8 22 MEAN QFF PRESSURE IN HPA 1019.8 1018.7 1013.0 1011.6 1005.0 1000.9 996.6 1000.4 1008.9 1016.5 1021.5 1018.2 1010.9 MAX. QFF PRESSURE IN HPA 1030.0 1035.0 1022.1 1017.5 1010.4 1008.8 1001.4 1004.9 1017.7 1022.0 1027.3 1026.7 1035.0 DAY 12 15 17 20 25 24 1 23 28 28 17 24 MIN. QFF PRESSURE IN HPA 1008.4 1008.2 1003.7 1005.6 997.7 994.0 991.4 994.8 1002.7 1009.7 1014.1 1006.9 991.4 DAY 25 21 6 10 23 12 14 11 8 15 6 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 798.4 797.9 796.8 799.5 797.2 796.9 795.1 796.9 801.1 803.1 802.9 798.7 798.7 MAX. QFE PRESSURE IN HPA 804.3 806.1 801.9 803.4 800.5 801.1 798.7 800.1 803.2 805.8 805.5 804.8 806.1 DAY 13 15 29 19 9 23 1 23 17 20 2 8 MIN. QFE PRESSURE IN HPA 790.5 791.1 790.2 794.6 792.8 792.0 789.9 793.5 797.6 800.0 799.3 790.2 789.9 DAY 26 8 7 10 23 11 14 11 3 15 6 22 MEAN QNH PRESSURE IN HPA 1020.8 1020.2 1018.9 1022.1 1019.3 1019.0 1016.8 1019.0 1024.1 1026.5 1026.2 1021.2 1021.2 MAX. QNH PRESSURE IN HPA 1028.0 1030.2 1025.1 1026.9 1023.4 1024.1 1021.2 1022.9 1026.7 1029.8 1029.5 1028.6 1030.2 DAY 13 15 29 19 9 23 1 23 17 20 2 8 MIN. QNH PRESSURE IN HPA 1011.2 1011.9 1010.8 1016.2 1014.0 1013.0 1010.4 1014.8 1019.8 1022.8 1021.9 1010.8 1010.4 DAY 26 8 7 10 23 11 14 11 3 15 6 22 MEAN QFF PRESSURE IN HPA 1020.4 1019.0 1013.3 1011.1 1005.1 ****** ****** 999.2 1007.8 1016.1 1021.1 1018.8 ****** MAX. QFF PRESSURE IN HPA 1031.2 1034.4 1022.9 1016.6 1012.1 ****** ****** 1003.9 1015.3 1021.7 1027.8 1027.6 ****** DAY 12 15 17 14 25 ** ** 23 28 28 24 17 MIN. QFF PRESSURE IN HPA 1008.5 1010.4 1004.1 1004.2 999.1 ****** ****** 993.3 1001.5 1009.1 1012.9 1008.2 ****** DAY 25 8 6 28 18 ** ** 11 8 15 6 22 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 797.2 796.7 795.7 798.2 796.0 795.8 794.0 795.8 799.8 801.6 801.1 797.3 797.4 MAX. QFE PRESSURE IN HPA 802.3 805.7 801.0 802.1 799.6 800.0 797.3 799.1 801.9 804.6 803.7 803.1 805.7 DAY 12 15 29 19 25 23 1 23 17 20 2 7 MIN. QFE PRESSURE IN HPA 790.3 790.2 790.1 793.5 793.0 791.1 789.1 792.1 795.9 797.9 797.5 790.8 789.1 DAY 25 8 6 12 28 11 14 11 3 15 6 22 MEAN QNH PRESSURE IN HPA 1019.3 1018.7 1017.5 1020.5 1017.8 1017.6 1015.4 1017.6 1022.5 1024.7 1024.1 1019.5 1019.6 MAX. QNH PRESSURE IN HPA 1025.6 1029.7 1024.0 1025.3 1022.3 1022.8 1019.5 1021.7 1025.1 1028.4 1027.3 1026.5 1029.7 DAY 12 15 29 19 25 23 1 23 17 20 2 7 MIN. QNH PRESSURE IN HPA 1010.9 1010.8 1010.7 1014.8 1014.2 1011.9 1009.4 1013.1 1017.7 1020.2 1019.7 1011.5 1009.4 DAY 25 8 6 12 28 11 14 11 3 15 6 22 MEAN QFF PRESSURE IN HPA 1017.3 1016.3 1011.1 1009.0 1003.5 ****** ****** 997.4 1005.8 1013.4 1017.7 1015.9 ****** MAX. QFF PRESSURE IN HPA 1026.6 1032.3 1019.5 1015.1 1011.3 ****** ****** 1002.6 1013.2 1017.7 1023.4 1025.0 ****** DAY 12 15 17 14 25 ** ** 23 28 27 24 17 MIN. QFF PRESSURE IN HPA 1007.0 1008.1 1003.0 1001.1 997.2 ****** ****** 990.6 998.8 1006.4 1009.7 1007.7 ****** DAY 25 8 6 28 18 ** ** 11 8 15 6 1 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 796.1 795.4 794.5 796.7 794.7 794.4 792.4 794.3 798.2 800.3 799.9 796.5 796.1 MAX. QFE PRESSURE IN HPA 801.6 804.3 799.4 801.3 798.8 799.0 796.0 797.9 800.8 803.3 802.4 802.4 804.3 DAY 12 15 18 19 25 22 1 31 30 20 24 8 MIN. QFE PRESSURE IN HPA 788.5 789.3 788.2 792.0 791.6 789.9 788.2 790.4 794.4 797.3 796.2 791.3 788.2 DAY 25 8 6 12 28 12 14 11 3 4 6 25 MEAN QNH PRESSURE IN HPA 1018.0 1017.2 1016.0 1018.8 1016.2 1015.9 1013.5 1015.8 1020.6 1023.2 1022.6 1018.5 1018.0 MAX. QNH PRESSURE IN HPA 1024.7 1028.0 1022.0 1024.3 1021.3 1021.5 1017.9 1020.2 1023.7 1026.8 1025.7 1025.7 1028.0 DAY 12 15 18 19 25 22 1 31 30 20 24 8 MIN. QNH PRESSURE IN HPA 1008.7 1009.7 1008.3 1013.0 1012.5 1010.4 1008.3 1011.0 1015.9 1019.5 1018.1 1012.1 1008.3 DAY 25 8 6 12 28 12 14 11 3 4 6 25 MEAN QFF PRESSURE IN HPA 1016.1 1014.8 1009.9 1007.6 1002.1 ****** ****** 996.4 1004.6 1012.2 1016.4 1015.2 ****** MAX. QFF PRESSURE IN HPA 1026.0 1030.1 1017.4 1013.8 1010.4 ****** ****** 1002.8 1013.0 1017.1 1022.8 1024.1 ****** DAY 12 15 17 19 25 ** ** 31 27 27 24 17 MIN. QFF PRESSURE IN HPA 1004.9 1005.6 1002.4 1000.8 997.1 ****** ****** 989.5 997.5 1006.4 1007.9 1006.4 ****** DAY 25 7 6 28 28 ** ** 11 8 15 6 1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 796.9 796.2 794.9 797.1 794.8 794.5 792.2 794.1 798.4 801.0 800.7 797.3 796.5 MAX. QFE PRESSURE IN HPA 802.6 804.8 799.4 802.0 798.2 800.5 795.5 798.1 800.9 803.6 803.4 803.5 804.8 DAY 12 15 12 19 8 23 1 31 29 20 24 7 MIN. QFE PRESSURE IN HPA 788.3 790.2 788.3 792.7 792.0 789.9 788.6 790.4 794.6 798.7 797.2 790.4 788.3 DAY 25 8 6 12 28 12 14 11 3 4 6 25 MEAN QNH PRESSURE IN HPA 1019.0 1018.1 1016.5 1019.3 1016.4 1016.0 1013.3 1015.6 1020.8 1023.9 1023.6 1019.5 1018.5 MAX. QNH PRESSURE IN HPA 1025.9 1028.6 1022.0 1025.2 1020.6 1023.4 1017.3 1020.4 1023.8 1027.1 1026.9 1027.0 1028.6 DAY 12 15 12 19 8 23 1 31 29 20 24 7 MIN. QNH PRESSURE IN HPA 1008.5 1010.8 1008.5 1013.8 1013.0 1010.4 1008.8 1011.0 1016.2 1021.2 1019.3 1011.0 1008.5 DAY 25 8 6 12 28 12 14 11 3 4 6 25 MEAN QFF PRESSURE IN HPA 1019.1 1017.8 1011.8 1009.4 1002.7 998.4 993.5 997.5 1006.7 1015.0 1019.9 1017.8 1009.1 MAX. QFF PRESSURE IN HPA 1029.7 1033.7 1019.5 1014.9 1010.4 1008.3 998.9 1003.9 1015.0 1019.4 1025.8 1026.2 1033.7 DAY 12 15 17 19 25 23 31 31 28 31 24 17 MIN. QFF PRESSURE IN HPA 1006.2 1007.6 1003.1 1005.0 997.6 991.9 989.3 991.2 999.5 1010.9 1012.1 1009.3 989.3 DAY 25 28 6 28 28 12 14 11 8 15 6 25 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 797.5 797.0 796.0 798.5 796.3 ****** ****** 795.4 799.9 802.1 801.5 798.0 ****** MAX. QFE PRESSURE IN HPA 803.6 805.7 800.5 802.8 799.7 ****** ****** 799.6 802.0 805.0 803.9 804.1 ****** DAY 12 15 18 18 8 ** ** 31 29 27 14 8 MIN. QFE PRESSURE IN HPA 789.0 791.1 787.9 794.8 793.5 ****** ****** 791.6 795.9 799.8 797.8 790.7 ****** DAY 25 7 6 4 5 ** ** 12 3 3 30 25 MEAN QNH PRESSURE IN HPA 1019.6 1019.1 1017.9 1020.9 1018.2 ****** ****** 1017.2 1022.6 1025.4 1024.6 1020.3 ****** MAX. QNH PRESSURE IN HPA 1027.1 1029.7 1023.4 1026.2 1022.4 ****** ****** 1022.3 1025.2 1028.9 1027.5 1027.8 ****** DAY 12 15 18 18 8 ** ** 31 29 27 14 8 MIN. QNH PRESSURE IN HPA 1009.3 1011.9 1008.0 1016.4 1014.8 ****** ****** 1012.5 1017.7 1022.5 1020.1 1011.4 ****** DAY 25 7 6 4 5 ** ** 12 3 3 30 25 MEAN QFF PRESSURE IN HPA 1019.0 1017.9 1012.2 1009.7 1003.9 ****** ****** 997.5 1006.5 1014.9 1019.3 1017.9 ****** MAX. QFF PRESSURE IN HPA 1029.8 1033.5 1020.3 1014.4 1010.5 ****** ****** 1002.8 1014.6 1020.6 1026.7 1027.9 ****** DAY 12 15 17 14 25 ** ** 23 30 27 27 17 MIN. QFF PRESSURE IN HPA 1007.0 1009.0 1001.9 1005.4 999.5 ****** ****** 991.2 1000.1 1010.7 1011.0 1007.0 ****** DAY 25 7 6 28 27 ** ** 11 7 8 6 25 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 797.0 796.8 795.8 798.6 796.4 ****** ****** 795.6 800.0 801.9 801.3 797.6 ****** MAX. QFE PRESSURE IN HPA 803.4 805.5 800.5 803.1 799.8 ****** ****** 800.0 801.9 805.0 803.5 803.5 ****** DAY 12 15 29 18 8 ** ** 31 16 27 12 7 MIN. QFE PRESSURE IN HPA 788.7 790.4 788.3 794.6 791.7 ****** ****** 792.1 796.3 799.6 797.2 792.1 ****** DAY 25 20 6 11 22 ** ** 11 3 3 30 31 MEAN QNH PRESSURE IN HPA 1019.1 1018.8 1017.7 1021.0 1018.4 ****** ****** 1017.4 1022.7 1025.1 1024.4 1019.9 ****** MAX. QNH PRESSURE IN HPA 1026.9 1029.5 1023.4 1026.5 1022.5 ****** ****** 1022.8 1025.1 1028.9 1027.0 1027.0 ****** DAY 12 15 29 18 8 ** ** 31 16 27 12 7 MIN. QNH PRESSURE IN HPA 1009.0 1011.0 1008.5 1016.2 1012.6 ****** ****** 1013.1 1018.2 1022.3 1019.3 1013.1 ****** DAY 25 20 6 11 22 ** ** 11 3 3 30 31 MEAN QFF PRESSURE IN HPA 1016.9 1016.5 1011.2 1009.2 1003.9 ****** ****** 997.5 1006.1 1013.6 1017.9 1016.3 ****** MAX. QFF PRESSURE IN HPA 1027.4 1032.9 1019.9 1014.3 1010.4 ****** ****** 1003.5 1015.0 1019.0 1025.3 1026.9 ****** DAY 6 15 17 19 25 ** ** 31 27 27 16 17 MIN. QFF PRESSURE IN HPA 1006.0 1006.2 1001.2 1004.4 996.6 ****** ****** 990.6 999.5 1010.5 1010.6 1008.1 ****** DAY 25 20 6 4 22 ** ** 11 7 15 30 31 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.8 2.0 4.5 11.5 16.5 22.7 25.8 23.5 17.8 13.0 8.9 3.5 12.4 MINIMUN AIR TEMPERATURE (C) -5.2 -3.6 -1.6 5.1 8.9 13.1 15.8 14.2 8.0 3.3 1.1 -1.9 4.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 1 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 17 14 11 0 0 0 0 0 0 0 3 10 55 DAYS WITH FREEZING MIN.<= 0 26 26 20 5 0 0 0 0 0 2 12 22 113 TEMPERATURE RECORDS LOWEST(C) -15.6 -10.8 -10.0 -1.0 4.2 10.6 12.0 10.4 3.8 -0.6 -7.4 -8.0 -15.6 DAY 26 12 4 5 14 7 27 22 13 27 27 7 MAXIMUM AIR TEMPERATURE (C) 4.8 8.3 11.4 18.2 23.8 30.8 33.4 31.6 26.9 22.7 17.2 9.7 19.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 18 31 23 1 0 0 0 73 DAYS WITH MAXIMUM TEMP. <= 0 4 0 0 0 0 0 0 0 0 0 0 0 4 TEMPERATURE RECORDS HIGHEST(C) 10.8 13.4 18.2 24.6 29.0 35.4 36.0 35.0 30.0 27.4 21.0 15.4 36.0 DAY 20 17 30 13 31 30 5 7 20 3 14 12 DIF. BETWEEN (MAX.-MIN.) (C) 10.0 11.9 13.0 13.1 14.9 17.7 17.6 17.4 18.9 19.4 16.1 11.6 15.1 MEAN DAILY TEMP. (MDT) (C) -0.2 2.4 4.9 11.7 16.3 22.0 24.6 22.9 17.4 13.0 9.2 3.9 12.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 34.0 112.0 65.8 0.0 0.0 0.0 0.0 211.8 HEATING DEG. DAYS(BASE 18 0C) 564.8 453.6 406.2 189.8 60.3 0.0 0.0 0.0 32.0 154.3 264.7 437.8 2563.5 DEWPOINT (MEAN C) -9.6 -10.5 -9.0 -5.3 -1.1 -2.8 -3.0 -1.6 -7.5 -9.2 -6.3 -5.4 -5.9 MIXING RATIO (G/KG) 2.52 2.35 2.67 3.57 4.69 4.13 4.03 4.45 2.84 2.51 3.24 3.41 3.37 VAPOUR PRESSURE (HPA) 3.20 2.98 3.40 4.54 5.97 5.25 5.12 5.66 3.64 3.22 4.15 4.35 4.29 SATURATION DEF. (HPA) 2.89 4.44 5.57 9.83 13.78 23.92 29.73 25.12 18.31 13.07 8.04 3.83 13.21 RELATIVE HUMIDITY (MEAN %) 55 42 41 37 35 21 17 21 20 24 38 57 34 RELATIVE HUMIDITY (MAX. %) 72 60 63 61 60 38 29 34 33 39 56 78 52 RELATIVE HUMIDITY (MIN. %) 35 23 21 18 16 9 9 12 9 11 20 32 18 RELATIVE HUMIDITY (MEAN% 03UTC) 62 55 58 55 53 35 27 32 33 38 51 70 47 RELATIVE HUMIDITY (MEAN% 09UTC) 43 29 27 23 20 12 10 13 11 13 24 37 22 RELATIVE HUMIDITY (MEAN% 15UTC) 52 38 33 27 22 12 10 13 11 16 30 56 27 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 23.5 17.9 12.1 13.1 2.8 0.0 0.2 0.6 0.0 0.0 0.3 45.8 116.3 DAYS WITH PRECIPITATION >=10 0 1 1 0 0 0 0 0 0 0 0 2 4 DAYS WITH PRECIPITATION >= 5 2 1 1 1 0 0 0 0 0 0 0 4 9 DAYS WITH PRECIPITATION >= 1 4 1 2 3 1 0 0 0 0 0 0 7 18 DAYS WITH PRECIPITATION 14 7 7 10 8 0 1 2 0 0 2 13 64 GREATEST DAILY PRECIPITATION 7.4 17.8 10.0 7.4 2.0 0.0 0.2 0.6 0.0 0.0 0.3 14.0 17.8 DAY 2 25 31 27 22 ** 14 31 ** ** 15 9 DAY WITH THUNDER STORM 0 0 2 1 5 0 0 0 0 0 0 1 9 DAYS WITH SNOW OR SLEET 9 2 2 0 0 0 0 0 0 0 0 8 21 DAYS WITH DUST 1 6 6 6 8 6 1 3 0 0 1 0 38 WIND DIRECTION (PREVAILING) 225 225 225 225 270 270 360 360 360 360 225 225 225 PREVAILING WIND SPEED(KNOTS) 12.3 13.5 15.0 13.8 14.4 11.0 10.5 11.4 9.4 8.1 12.9 13.8 13.5 PREVAILING WIND PERCENT 12.1 24.6 18.1 19.6 14.9 9.2 17.3 21.8 20.4 16.1 13.8 12.1 10.8 CALMS PERCENT OF WIND 56.5 45.3 52.4 47.5 52.0 61.3 52.8 53.6 62.5 64.9 63.8 64.9 56.5 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 246 233 250 249 258 255 14 360 345 347 242 235 268 VECTOR WIND MAGNITUDE(KNOTS) 2.1 5.3 3.9 4.2 4.0 2.0 2.3 3.2 2.4 2.0 1.8 2.4 2.0 WIND STEADINESES (MEAN %) 47.7 80.3 67.2 68.9 62.5 54.1 51.1 66.7 72.7 80.0 54.5 68.6 43.5 WIND SPEED (MEAN KNOTS) 4.4 6.6 5.8 6.1 6.4 3.7 4.5 4.8 3.3 2.5 3.3 3.5 4.6 FASTEST WIND DIRECTION 210 190 230 220 250 250 10 40 360 260 250 210 190 FASTEST WIND SPEED (KNOTS) 29 33 29 31 33 29 23 25 19 16 27 23 33 DAY 3 24 16 26 10 18 9 4 4 1 23 27 DAYS WITH SKY CLEAR (0-2)/8 18 21 18 10 16 25 25 24 29 31 16 15 248 DAYS WITH P.CLOUDY (3-6)/8 10 6 9 14 12 5 6 6 1 0 13 11 93 DAYS WITH CLOUDY (7-8)/8 3 2 4 6 3 0 0 1 0 0 1 5 25 DAYS WITH VISIBILITY =< 2 KM 2 0 1 1 0 0 0 0 0 0 0 1 5 DURATION OF SUNSHINE HOURS 209.6 251.1 250.5 220.7 279.2 333.0 350.7 330.4 319.6 307.0 230.2 211.1 3293.1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 795.8 794.7 795.4 796.5 798.0 795.8 795.0 796.6 800.1 800.5 801.4 797.7 797.3 MAX. QFE PRESSURE IN HPA 806.5 801.3 803.2 802.1 802.7 802.2 799.2 801.9 804.1 805.4 807.6 804.2 807.6 DAY-HOUR 10- 6 16- 6 13- 6 25- 9 29- 6 11- 6 16- 3 16- 6 2- 6 30- 6 4- 6 1- 6 MIN. QFE PRESSURE IN HPA 786.9 788.3 786.8 788.7 792.1 789.3 790.1 790.5 796.0 794.2 793.1 792.4 786.8 DAY-HOUR 30-18 11- 3 31- 0 18-12 4-12 27-12 19-15 1-15 17-12 7-12 26-12 4- 3 MEAN QNH PRESSURE IN HPA 1017.7 1016.3 1017.1 1018.5 1020.3 1017.6 1016.6 1018.7 1022.9 1023.4 1024.4 1019.9 1019.4 MAX. QNH PRESSURE IN HPA 1030.7 1024.3 1026.7 1025.3 1026.0 1025.4 1021.8 1025.1 1027.8 1029.3 1032.0 1027.9 1032.0 DAY-HOUR 10- 6 16- 6 13- 6 25- 9 29- 6 11- 6 16- 3 16- 6 2- 6 30- 6 4- 6 1- 6 MIN. QNH PRESSURE IN HPA 1006.8 1008.5 1006.6 1009.0 1013.1 1009.7 1010.7 1011.2 1017.9 1015.7 1014.3 1013.5 1006.6 DAY-HOUR 30-18 11- 3 31- 0 18-12 4-12 27-12 19-15 1-15 17-12 7-12 26-12 4- 3 MEAN QFF PRESSURE IN HPA 1019.8 1015.9 1014.5 1009.9 1007.6 1000.0 996.6 1000.4 1009.4 1013.8 1018.2 1018.1 1010.3 MAX. QFF PRESSURE IN HPA 1037.6 1028.3 1031.5 1020.5 1015.8 1009.3 1004.0 1012.5 1017.1 1024.7 1028.3 1028.9 1037.6 DAY-HOUR 10- 6 16- 6 13- 3 20- 3 14- 3 7- 3 16- 3 31- 6 2- 3 30- 3 18- 3 11- 6 MIN. QFF PRESSURE IN HPA 1004.4 1002.5 997.1 999.0 1000.9 990.8 990.3 992.1 1002.9 1005.0 1005.7 1007.4 990.3 DAY-HOUR 30-18 25- 6 31- 0 18- 9 9- 0 28-12 19-12 1-18 17-12 6-12 26- 0 4- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 795.6 794.5 795.1 796.1 797.8 795.8 795.0 796.6 800.1 800.5 801.2 797.5 797.1 MAX. QFE PRESSURE IN HPA 804.0 800.0 801.6 800.3 801.7 800.6 798.3 800.3 802.4 804.7 805.2 802.4 805.2 DAY 10 16 13 13 29 11 16 16 2 30 4 1 MIN. QFE PRESSURE IN HPA 789.0 788.4 786.8 790.1 794.0 790.9 791.5 792.2 797.4 796.3 793.7 792.6 786.8 DAY 31 11 31 18 4 27 19 2 6 7 26 4 MEAN QNH PRESSURE IN HPA 1017.4 1016.0 1016.7 1017.9 1020.1 1017.6 1016.6 1018.6 1022.9 1023.3 1024.2 1019.7 1019.2 MAX. QNH PRESSURE IN HPA 1027.6 1022.8 1024.7 1023.1 1024.8 1023.5 1020.7 1023.1 1025.7 1028.5 1029.1 1025.7 1029.1 DAY 10 16 13 13 29 11 16 16 2 30 4 1 MIN. QNH PRESSURE IN HPA 1009.3 1008.6 1006.6 1010.7 1015.4 1011.6 1012.4 1013.2 1019.6 1018.2 1015.1 1013.7 1006.6 DAY 31 11 31 18 4 27 19 2 6 7 26 4 MEAN QFF PRESSURE IN HPA 1018.6 1014.9 1013.5 1008.9 1007.3 1000.3 997.0 1000.3 1009.1 1013.0 1016.9 1017.0 1009.7 MAX. QFF PRESSURE IN HPA 1032.8 1024.0 1028.9 1016.5 1013.9 1007.0 1001.8 1007.3 1014.2 1021.0 1024.3 1025.0 1032.8 DAY 10 16 13 20 14 11 16 31 2 30 19 11 MIN. QFF PRESSURE IN HPA 1004.9 1006.6 997.1 999.9 1000.9 992.4 991.4 994.1 1005.5 1006.7 1005.7 1007.4 991.4 DAY 1 25 31 18 9 28 19 2 18 6 26 4 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 795.7 794.7 795.7 796.7 798.5 796.5 795.9 797.4 800.8 801.1 801.7 797.7 797.7 MAX. QFE PRESSURE IN HPA 804.5 800.6 802.6 801.3 802.5 801.7 799.2 801.2 803.6 805.1 806.0 802.6 806.0 DAY 10 16 13 26 29 11 16 16 2 30 4 1 MIN. QFE PRESSURE IN HPA 790.1 788.3 788.3 790.3 793.4 791.6 792.1 793.4 798.2 796.8 794.5 792.4 788.3 DAY 3 11 31 18 7 27 19 2 6 7 26 4 MEAN QNH PRESSURE IN HPA 1017.5 1016.3 1017.5 1018.7 1020.9 1018.5 1017.7 1019.6 1023.8 1024.1 1024.9 1019.9 1020.0 MAX. QNH PRESSURE IN HPA 1028.2 1023.5 1025.9 1024.3 1025.8 1024.8 1021.8 1024.2 1027.1 1029.0 1030.1 1025.9 1030.1 DAY 10 16 13 26 29 11 16 16 2 30 4 1 MIN. QNH PRESSURE IN HPA 1010.7 1008.5 1008.5 1010.9 1014.7 1012.5 1013.1 1014.7 1020.6 1018.8 1016.0 1013.5 1008.5 DAY 3 11 31 18 7 27 19 2 6 7 26 4 MEAN QFF PRESSURE IN HPA 1020.6 1017.2 1016.0 1011.1 1009.0 1001.7 999.0 1002.4 1012.0 1016.4 1020.6 1019.3 1012.1 MAX. QFF PRESSURE IN HPA 1036.2 1028.2 1031.5 1020.5 1015.8 1009.3 1004.0 1010.1 1017.1 1024.7 1028.3 1027.4 1036.2 DAY 10 16 13 20 14 7 16 31 2 30 18 11 MIN. QFF PRESSURE IN HPA 1007.2 1004.2 1002.3 1000.8 1001.3 993.6 993.8 996.7 1008.1 1009.5 1008.8 1009.3 993.6 DAY 1 25 31 18 7 28 19 2 17 7 26 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 797.0 795.6 796.7 797.6 798.9 796.8 796.2 798.0 801.6 802.1 802.7 798.9 798.5 MAX. QFE PRESSURE IN HPA 806.5 801.3 803.2 801.9 802.7 802.2 799.1 801.9 804.1 805.4 807.6 804.2 807.6 DAY 10 16 13 21 29 11 6 16 2 30 4 1 MIN. QFE PRESSURE IN HPA 791.1 788.8 788.9 790.9 793.7 791.3 792.1 794.1 798.8 797.7 795.1 794.7 788.8 DAY 25 25 31 18 4 27 19 2 6 7 26 4 MEAN QNH PRESSURE IN HPA 1019.1 1017.4 1018.8 1019.8 1021.4 1018.9 1018.1 1020.3 1024.7 1025.3 1026.1 1021.3 1020.9 MAX. QNH PRESSURE IN HPA 1030.7 1024.3 1026.7 1025.1 1026.0 1025.4 1021.7 1025.1 1027.8 1029.3 1032.0 1027.9 1032.0 DAY 10 16 13 21 29 11 6 16 2 30 4 1 MIN. QNH PRESSURE IN HPA 1011.9 1009.1 1009.2 1011.6 1015.1 1012.1 1013.1 1015.6 1021.3 1019.9 1016.8 1016.3 1009.1 DAY 25 25 31 18 4 27 19 2 6 7 26 4 MEAN QFF PRESSURE IN HPA 1021.7 1017.3 1016.4 1011.3 1008.5 1000.7 997.2 1001.4 1010.6 1015.6 1020.1 1020.1 1011.7 MAX. QFF PRESSURE IN HPA 1037.6 1028.3 1031.1 1019.3 1015.7 1008.1 1000.7 1012.5 1015.2 1023.7 1027.3 1028.9 1037.6 DAY 10 16 12 8 14 7 16 31 2 30 4 11 MIN. QFF PRESSURE IN HPA 1012.2 1002.5 1001.6 1001.4 1003.8 992.5 992.6 994.7 1006.4 1009.0 1009.4 1011.2 992.5 DAY 1 25 31 18 4 27 19 2 18 6 26 4 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 795.8 794.8 795.7 796.7 798.0 795.8 795.3 796.8 800.2 800.4 801.2 797.5 797.4 MAX. QFE PRESSURE IN HPA 804.5 800.0 802.4 802.1 801.9 801.1 798.5 800.9 802.8 804.0 805.8 802.2 805.8 DAY 10 16 12 25 28 11 16 16 2 29 4 1 MIN. QFE PRESSURE IN HPA 790.2 789.4 789.0 789.8 793.0 790.8 791.5 792.8 797.2 796.0 793.6 793.7 789.0 DAY 30 25 31 18 4 27 19 1 6 7 26 9 MEAN QNH PRESSURE IN HPA 1017.6 1016.4 1017.5 1018.8 1020.3 1017.6 1017.0 1018.9 1023.0 1023.3 1024.2 1019.7 1019.5 MAX. QNH PRESSURE IN HPA 1028.2 1022.8 1025.7 1025.3 1025.1 1024.1 1020.9 1023.8 1026.2 1027.6 1029.8 1025.4 1029.8 DAY 10 16 12 25 28 11 16 16 2 29 4 1 MIN. QNH PRESSURE IN HPA 1010.8 1009.8 1009.3 1010.3 1014.2 1011.5 1012.4 1014.0 1019.3 1017.9 1014.9 1015.1 1009.3 DAY 30 25 31 18 4 27 19 1 6 7 26 9 MEAN QFF PRESSURE IN HPA 1019.1 1015.0 1014.4 1009.8 1007.2 999.8 996.4 1000.0 1008.7 1012.5 1016.8 1016.7 1009.7 MAX. QFF PRESSURE IN HPA 1032.2 1023.5 1030.0 1017.4 1012.8 1007.6 1000.7 1009.5 1013.9 1020.0 1024.3 1023.6 1032.2 DAY 10 16 12 25 14 11 16 31 2 30 18 11 MIN. QFF PRESSURE IN HPA 1011.0 1003.9 1001.5 999.0 1002.6 992.3 990.8 994.0 1003.9 1006.7 1007.0 1009.9 990.8 DAY 3 25 31 18 4 28 19 28 17 7 26 4 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 794.8 793.7 794.2 795.4 796.8 794.7 794.0 795.3 798.8 799.0 800.1 796.6 796.1 MAX. QFE PRESSURE IN HPA 802.9 798.3 801.1 800.0 800.9 799.7 796.9 799.5 801.5 803.2 804.7 801.2 804.7 DAY 10 16 12 25 28 11 16 16 2 29 4 11 MIN. QFE PRESSURE IN HPA 787.7 788.5 788.7 788.7 792.1 789.3 790.7 790.9 796.0 794.2 793.1 792.9 787.7 DAY 30 11 22 18 4 27 19 1 17 7 26 19 MEAN QNH PRESSURE IN HPA 1016.4 1015.0 1015.7 1017.1 1018.8 1016.2 1015.4 1017.0 1021.3 1021.6 1022.9 1018.6 1018.0 MAX. QNH PRESSURE IN HPA 1026.3 1020.7 1024.1 1022.8 1023.8 1022.4 1019.0 1022.1 1024.6 1026.7 1028.5 1024.2 1028.5 DAY 10 16 12 25 28 11 16 16 2 29 4 11 MIN. QNH PRESSURE IN HPA 1007.7 1008.7 1009.0 1009.0 1013.1 1009.7 1011.4 1011.6 1017.9 1015.7 1014.3 1014.1 1007.7 DAY 30 11 22 18 4 27 19 1 17 7 26 19 MEAN QFF PRESSURE IN HPA 1017.6 1013.9 1012.4 1008.2 1006.1 999.0 995.9 998.9 1007.5 1011.3 1015.7 1016.0 1008.5 MAX. QFF PRESSURE IN HPA 1028.9 1020.5 1027.4 1015.4 1011.6 1006.2 1000.4 1007.2 1012.0 1019.5 1022.5 1022.3 1028.9 DAY 10 16 12 8 14 11 16 31 2 29 18 11 MIN. QFF PRESSURE IN HPA 1008.9 1006.3 1000.7 999.4 1001.8 990.8 990.3 992.2 1002.9 1005.0 1006.8 1009.7 990.3 DAY 30 25 31 18 11 28 19 1 17 6 26 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 795.7 794.4 794.7 795.7 797.2 794.6 793.6 795.3 799.0 799.5 801.1 797.6 796.5 MAX. QFE PRESSURE IN HPA 803.3 799.2 801.4 800.4 800.9 799.3 796.4 799.6 802.7 804.0 805.5 801.9 805.5 DAY 10 22 12 25 28 7 6 31 2 29 4 1 MIN. QFE PRESSURE IN HPA 787.1 789.0 789.4 789.4 792.7 789.5 790.1 790.5 796.1 794.6 794.8 793.5 787.1 DAY 30 11 22 18 4 27 19 1 6 7 27 19 MEAN QNH PRESSURE IN HPA 1017.5 1015.9 1016.3 1017.5 1019.3 1016.2 1015.0 1017.0 1021.6 1022.2 1024.0 1019.8 1018.5 MAX. QNH PRESSURE IN HPA 1026.8 1021.8 1024.5 1023.2 1023.8 1021.9 1018.4 1022.3 1026.0 1027.6 1029.5 1025.1 1029.5 DAY 10 22 12 25 28 7 6 31 2 29 4 1 MIN. QNH PRESSURE IN HPA 1007.0 1009.3 1009.8 1009.8 1013.8 1009.9 1010.7 1011.2 1018.0 1016.2 1016.4 1014.8 1007.0 DAY 30 11 22 18 4 27 19 1 6 7 27 19 MEAN QFF PRESSURE IN HPA 1020.7 1016.7 1014.6 1009.9 1007.4 999.5 996.3 999.8 1009.8 1014.5 1019.7 1019.3 1010.7 MAX. QFF PRESSURE IN HPA 1033.3 1024.9 1028.8 1016.7 1011.9 1008.4 1000.4 1009.3 1014.9 1022.7 1026.9 1026.2 1033.3 DAY 10 12 12 8 14 7 16 31 2 29 18 11 MIN. QFF PRESSURE IN HPA 1007.9 1008.6 1004.0 1001.8 1003.4 990.9 991.5 992.8 1005.3 1007.3 1012.4 1013.1 990.9 DAY 2 24 31 18 31 28 19 1 17 7 25 3 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 796.3 795.1 795.7 797.2 798.4 796.0 794.6 796.8 800.2 800.7 801.7 798.2 797.6 MAX. QFE PRESSURE IN HPA 804.4 800.2 802.5 801.2 801.7 800.4 797.6 801.1 803.6 804.9 805.5 802.6 805.5 DAY 9 22 12 25 28 6 15 31 2 29 4 11 MIN. QFE PRESSURE IN HPA 786.9 790.1 789.7 790.9 794.1 790.6 791.0 791.9 797.1 796.5 795.2 793.7 786.9 DAY 30 10 30 18 4 27 19 1 6 7 27 19 MEAN QNH PRESSURE IN HPA 1018.2 1016.8 1017.5 1019.3 1020.8 1017.8 1016.2 1018.9 1023.0 1023.6 1024.8 1020.5 1019.8 MAX. QNH PRESSURE IN HPA 1028.1 1023.0 1025.8 1024.2 1024.8 1023.2 1019.8 1024.1 1027.1 1028.7 1029.5 1025.9 1029.5 DAY 9 22 12 25 28 6 15 31 2 29 4 11 MIN. QNH PRESSURE IN HPA 1006.8 1010.7 1010.2 1011.6 1015.6 1011.3 1011.8 1012.9 1019.2 1018.5 1016.9 1015.1 1006.8 DAY 30 10 30 18 4 27 19 1 6 7 27 19 MEAN QFF PRESSURE IN HPA 1020.7 1016.8 1015.0 1010.6 1007.7 999.5 995.3 1000.1 1008.9 1014.0 1018.9 1019.3 1010.6 MAX. QFF PRESSURE IN HPA 1034.3 1026.9 1030.4 1018.1 1013.4 1007.7 999.0 1011.8 1014.0 1022.8 1025.9 1026.9 1034.3 DAY 9 16 12 8 13 6 15 31 1 29 18 11 MIN. QFF PRESSURE IN HPA 1004.4 1007.0 1001.7 1002.1 1003.4 991.4 990.7 992.1 1004.4 1007.9 1009.5 1010.1 990.7 DAY 30 24 30 17 9 27 18 1 17 7 25 3 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 796.0 795.0 795.5 797.0 798.3 796.1 795.1 797.1 800.3 800.8 801.5 797.7 797.5 MAX. QFE PRESSURE IN HPA 804.3 799.4 802.2 800.7 801.8 800.1 798.3 801.4 803.6 804.8 805.5 802.4 805.5 DAY 9 15 12 25 28 6 15 31 2 29 4 11 MIN. QFE PRESSURE IN HPA 787.9 789.0 788.8 791.3 794.3 790.9 791.6 792.6 797.6 796.6 794.8 793.7 787.9 DAY 30 10 30 17 4 27 18 1 6 6 27 19 MEAN QNH PRESSURE IN HPA 1017.9 1016.6 1017.3 1019.1 1020.7 1018.0 1016.8 1019.2 1023.2 1023.7 1024.6 1019.9 1019.7 MAX. QNH PRESSURE IN HPA 1028.0 1022.0 1025.4 1023.6 1025.0 1022.9 1020.7 1024.5 1027.1 1028.6 1029.5 1025.7 1029.5 DAY 9 15 12 25 28 6 15 31 2 29 4 11 MIN. QNH PRESSURE IN HPA 1008.0 1009.3 1009.1 1012.1 1015.8 1011.6 1012.5 1013.7 1019.8 1018.6 1016.4 1015.1 1008.0 DAY 30 10 30 17 4 27 18 1 6 6 27 19 MEAN QFF PRESSURE IN HPA 1019.4 1015.2 1014.0 1009.9 1007.4 999.9 996.3 1000.3 1008.9 1013.0 1017.2 1017.0 1009.9 MAX. QFF PRESSURE IN HPA 1033.6 1023.9 1030.5 1016.9 1012.5 1007.4 1000.2 1011.7 1015.2 1021.6 1024.1 1025.2 1033.6 DAY 9 12 12 20 14 6 15 31 1 29 18 10 MIN. QFF PRESSURE IN HPA 1005.6 1006.5 999.3 999.7 1003.0 992.2 990.9 993.8 1003.7 1007.1 1007.7 1007.7 990.9 DAY 30 10 30 17 9 27 18 1 17 6 25 3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.6 3.9 6.4 13.1 18.1 23.3 25.1 24.4 20.2 13.1 9.2 5.7 13.6 MINIMUN AIR TEMPERATURE (C) -4.6 -1.4 1.0 5.8 9.8 13.0 15.5 14.8 9.7 4.8 1.7 -2.8 5.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 17 10 3 0 0 0 0 0 0 0 3 12 45 DAYS WITH FREEZING MIN.<= 0 27 16 13 0 0 0 0 0 0 1 14 25 96 TEMPERATURE RECORDS LOWEST(C) -17.0 -8.4 -6.0 0.8 2.2 7.6 12.8 12.0 5.4 -0.2 -7.6 -9.0 -17.0 DAY 16 8 13 1 8 5 19 3 19 9 30 13 MAXIMUM AIR TEMPERATURE (C) 6.4 9.9 12.3 20.3 25.6 31.5 32.6 32.2 29.1 21.5 17.1 15.0 21.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 4 21 29 26 13 0 0 0 93 DAYS WITH MAXIMUM TEMP. <= 0 3 0 0 0 0 0 0 0 0 0 0 0 3 TEMPERATURE RECORDS HIGHEST(C) 13.4 16.2 17.6 24.8 30.8 34.5 35.4 34.6 32.4 28.0 22.4 20.0 35.4 DAY 28 28 31 20 27 17 15 15 3 1 2 19 DIF. BETWEEN (MAX.-MIN.) (C) 11.0 11.3 11.3 14.5 15.8 18.5 17.1 17.4 19.4 16.7 15.4 17.8 15.5 MEAN DAILY TEMP. (MDT) (C) 0.9 4.2 6.6 13.0 17.7 22.3 24.0 23.5 19.4 13.1 9.4 6.1 13.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 3.2 48.7 93.6 79.1 2.9 0.0 0.0 0.0 227.5 HEATING DEG. DAYS(BASE 18 0C) 531.1 386.1 352.3 148.8 42.0 0.3 0.0 0.0 7.3 150.6 258.1 369.6 2246.2 DEWPOINT (MEAN C) -7.3 -6.4 -5.0 -4.3 -0.4 -2.9 1.2 3.8 -7.8 -4.3 -4.7 -9.8 -4.0 MIXING RATIO (G/KG) 3.00 3.24 3.56 3.73 4.85 4.05 5.34 6.58 2.82 3.65 3.60 2.40 3.90 VAPOUR PRESSURE (HPA) 3.83 4.13 4.53 4.75 6.17 5.15 6.77 8.33 3.61 4.67 4.61 3.07 4.97 SATURATION DEF. (HPA) 2.95 4.41 5.54 11.02 15.83 25.17 26.76 23.90 21.83 11.46 7.85 6.84 13.63 RELATIVE HUMIDITY (MEAN %) 61 51 49 35 33 20 23 28 17 33 41 37 36 RELATIVE HUMIDITY (MAX. %) 79 70 70 58 54 36 36 41 30 51 61 60 54 RELATIVE HUMIDITY (MIN. %) 42 32 30 16 16 9 14 19 7 18 21 16 20 RELATIVE HUMIDITY (MEAN% 03UTC) 70 65 64 54 52 34 35 40 28 45 57 55 50 RELATIVE HUMIDITY (MEAN% 09UTC) 49 38 36 20 20 12 16 21 10 21 25 20 24 RELATIVE HUMIDITY (MEAN% 15UTC) 57 47 41 24 21 11 15 21 9 28 35 28 28 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 17.2 45.7 45.8 1.5 3.0 0.0 0.0 0.0 0.0 1.0 5.1 0.1 119.4 DAYS WITH PRECIPITATION >=10 0 1 2 0 0 0 0 0 0 0 0 0 3 DAYS WITH PRECIPITATION >= 5 1 1 2 0 0 0 0 0 0 0 1 0 5 DAYS WITH PRECIPITATION >= 1 5 3 6 1 1 0 0 0 0 0 1 0 17 DAYS WITH PRECIPITATION 11 12 12 4 4 0 0 0 0 3 2 1 49 GREATEST DAILY PRECIPITATION 5.0 42.0 23.0 1.2 2.9 0.0 0.0 0.0 0.0 0.4 5.0 0.1 42.0 DAY 3 3 9 27 6 ** ** ** ** 25 11 25 DAY WITH THUNDER STORM 0 0 0 2 1 0 0 0 0 0 1 0 4 DAYS WITH SNOW OR SLEET 8 2 1 0 0 0 0 0 0 0 0 0 11 DAYS WITH DUST 0 0 2 0 2 2 0 0 0 0 2 0 8 WIND DIRECTION (PREVAILING) 270 225 270 225 225 360 360 360 360 315 225 315 360 PREVAILING WIND SPEED(KNOTS) 10.5 13.6 14.2 13.2 14.5 12.0 11.5 11.2 9.9 5.7 14.4 5.5 10.5 PREVAILING WIND PERCENT 14.5 21.9 17.7 17.5 15.7 12.6 25.0 19.4 16.7 14.1 21.3 8.9 11.6 CALMS PERCENT OF WIND 64.5 42.9 46.0 52.9 46.8 51.0 43.1 55.2 57.5 62.1 52.9 72.2 54.0 NO. OF WIND OBSERVATION 248 224 248 240 248 239 248 248 240 248 240 248 2919 VECTOR WIND DIRECTION (MEAN) 271 229 251 247 265 306 360 3 1 341 245 290 284 VECTOR WIND MAGNITUDE(KNOTS) 2.4 4.1 4.0 3.8 2.8 1.7 3.8 3.0 2.3 2.1 3.6 1.3 1.9 WIND STEADINESES (MEAN %) 66.7 66.1 57.1 71.7 48.3 34.0 67.9 69.8 63.9 65.6 63.2 56.5 39.6 WIND SPEED (MEAN KNOTS) 3.6 6.2 7.0 5.3 5.8 5.0 5.6 4.3 3.6 3.2 5.7 2.3 4.8 FASTEST WIND DIRECTION 220 240 210 210 240 360 10 10 340 360 210 290 240 FASTEST WIND SPEED (KNOTS) 29 35 31 29 29 29 35 27 23 27 31 19 35 DAY 31 21 8 8 4 25 9 23 16 7 12 2 DAYS WITH SKY CLEAR (0-2)/8 16 14 11 10 14 29 27 26 29 19 20 19 234 DAYS WITH P.CLOUDY (3-6)/8 6 11 12 14 13 1 4 5 1 12 10 10 99 DAYS WITH CLOUDY (7-8)/8 9 3 8 6 4 0 0 0 0 0 0 2 32 DAYS WITH VISIBILITY =< 2 KM 6 2 1 0 0 0 0 0 0 0 0 0 9 DURATION OF SUNSHINE HOURS 182.7 222.2 213.0 260.3 311.4 373.8 358.2 335.1 322.4 268.0 255.8 253.9 3356.8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 797.0 797.0 796.7 797.5 798.1 796.0 795.4 797.2 798.7 802.6 799.9 800.7 798.1 MAX. QFE PRESSURE IN HPA 803.6 801.7 804.2 804.5 801.3 802.2 800.8 802.0 803.6 808.1 804.7 807.1 808.1 DAY-HOUR 27- 6 9- 6 31- 6 17- 6 27- 6 23- 6 27- 6 31- 6 23- 6 17- 6 20- 6 26- 6 MIN. QFE PRESSURE IN HPA 789.6 789.6 788.4 791.4 793.5 791.6 789.6 790.6 794.1 797.2 794.2 792.8 788.4 DAY-HOUR 9- 0 4-21 12-12 13-12 7-12 25-15 9-15 12-15 3-15 3-12 14- 0 4-12 MEAN QNH PRESSURE IN HPA 1019.1 1019.1 1018.7 1019.7 1020.5 1017.9 1017.1 1019.3 1021.2 1026.0 1022.7 1023.6 1020.4 MAX. QNH PRESSURE IN HPA 1027.1 1024.8 1027.9 1028.2 1024.3 1025.4 1023.7 1025.2 1027.1 1032.6 1028.5 1031.4 1032.6 DAY-HOUR 27- 6 9- 6 31- 6 17- 6 27- 6 23- 6 27- 6 31- 6 23- 6 17- 6 20- 6 26- 6 MIN. QNH PRESSURE IN HPA 1010.1 1010.1 1008.6 1012.3 1014.8 1012.5 1010.1 1011.3 1015.6 1019.3 1015.7 1014.0 1008.6 DAY-HOUR 9- 0 4-21 12-12 13-12 7-12 25-15 9-15 12-15 3-15 3-12 14- 0 4-12 MEAN QFF PRESSURE IN HPA 1020.0 1017.0 1014.3 1009.8 1006.4 999.9 997.5 1000.1 1005.8 1016.2 1016.0 1020.3 1010.3 MAX. QFF PRESSURE IN HPA 1029.4 1030.3 1024.6 1020.4 1012.8 1008.5 1005.0 1008.8 1014.0 1024.8 1027.1 1030.9 1030.9 DAY-HOUR 15-18 8- 3 23- 6 1- 3 15- 3 23- 6 28- 3 31- 3 24- 3 9- 3 30-15 27- 6 MIN. QFF PRESSURE IN HPA 1004.1 1006.4 1003.3 1001.6 998.9 994.3 989.2 992.0 999.4 1006.4 1006.0 1006.9 989.2 DAY-HOUR 8-18 3- 3 21-12 26-12 29- 6 13-12 13-12 12-21 4-18 3-12 14- 0 4-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 796.6 796.7 796.2 797.4 798.0 796.0 795.4 797.2 798.7 802.5 799.7 800.6 797.9 MAX. QFE PRESSURE IN HPA 802.3 801.3 802.0 803.1 800.3 800.4 799.6 801.0 802.1 806.6 803.2 806.1 806.6 DAY 27 8 31 17 19 23 28 31 24 17 20 27 MIN. QFE PRESSURE IN HPA 789.6 789.6 790.8 793.2 795.2 793.2 791.1 792.2 795.8 799.1 794.2 794.9 789.6 DAY 9 5 12 27 7 26 14 13 29 4 14 5 MEAN QNH PRESSURE IN HPA 1018.7 1018.8 1018.1 1019.6 1020.3 1017.9 1017.1 1019.3 1021.1 1025.8 1022.4 1023.5 1020.2 MAX. QNH PRESSURE IN HPA 1025.6 1024.3 1025.2 1026.5 1023.1 1023.2 1022.3 1024.0 1025.3 1030.8 1026.7 1030.2 1030.8 DAY 27 8 31 17 19 23 28 31 24 17 20 27 MIN. QNH PRESSURE IN HPA 1010.1 1010.1 1011.5 1014.5 1016.9 1014.5 1011.9 1013.2 1017.6 1021.7 1015.7 1016.5 1010.1 DAY 9 5 12 27 7 26 14 13 29 4 14 5 MEAN QFF PRESSURE IN HPA 1018.8 1016.0 1013.3 1009.4 1006.3 1000.2 997.7 1000.5 1005.6 1015.4 1014.7 1019.1 1009.7 MAX. QFF PRESSURE IN HPA 1028.4 1028.1 1019.5 1018.3 1010.7 1006.4 1004.7 1006.8 1012.1 1021.0 1021.1 1027.3 1028.4 DAY 16 8 24 1 10 23 28 31 24 9 23 27 MIN. QFF PRESSURE IN HPA 1004.1 1006.5 1007.4 1002.0 1000.9 995.6 990.1 994.4 1000.8 1008.3 1006.0 1010.3 990.1 DAY 9 3 9 27 29 14 12 13 4 4 14 4 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 796.9 797.0 796.8 798.0 798.6 796.9 796.2 798.1 799.5 803.1 800.2 801.0 798.5 MAX. QFE PRESSURE IN HPA 802.6 801.3 803.0 803.7 800.7 802.0 800.0 801.5 802.7 807.3 803.8 806.4 807.3 DAY 27 8 31 17 27 23 27 31 23 17 20 27 MIN. QFE PRESSURE IN HPA 790.0 790.5 790.4 793.6 795.2 793.9 792.3 793.6 796.3 799.7 794.8 795.8 790.0 DAY 9 3 12 13 7 26 12 13 29 4 14 5 MEAN QNH PRESSURE IN HPA 1019.0 1019.1 1018.9 1020.3 1021.1 1018.9 1018.1 1020.4 1022.1 1026.6 1023.0 1023.9 1021.0 MAX. QNH PRESSURE IN HPA 1025.9 1024.3 1026.4 1027.3 1023.6 1025.2 1022.8 1024.6 1026.0 1031.7 1027.4 1030.6 1031.7 DAY 27 8 31 17 27 23 27 31 23 17 20 27 MIN. QNH PRESSURE IN HPA 1010.5 1011.2 1011.0 1014.9 1016.9 1015.3 1013.4 1014.9 1018.2 1022.4 1016.4 1017.6 1010.5 DAY 9 3 12 13 7 26 12 13 29 4 14 5 MEAN QFF PRESSURE IN HPA 1021.0 1018.4 1015.5 1011.6 1008.1 1001.7 999.6 1002.7 1008.3 1018.6 1017.9 1022.5 1012.2 MAX. QFF PRESSURE IN HPA 1028.0 1030.3 1021.9 1020.4 1012.8 1008.4 1005.0 1008.8 1014.0 1024.8 1025.9 1030.8 1030.8 DAY 16 8 24 1 15 23 28 31 24 9 30 27 MIN. QFF PRESSURE IN HPA 1005.5 1006.4 1008.1 1003.2 1001.2 997.6 993.4 995.7 1003.9 1012.2 1008.3 1014.5 993.4 DAY 9 3 21 26 29 14 12 13 4 3 14 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 798.1 798.1 798.0 798.7 799.1 797.3 796.7 798.6 800.3 804.2 801.1 802.1 799.3 MAX. QFE PRESSURE IN HPA 803.6 801.7 804.2 804.5 801.3 802.2 800.8 802.0 803.6 808.1 804.7 807.1 808.1 DAY 27 9 31 17 27 23 27 31 23 17 20 26 MIN. QFE PRESSURE IN HPA 791.4 792.1 791.1 794.0 794.7 794.3 792.5 794.4 796.8 800.8 795.3 796.6 791.1 DAY 9 3 12 13 7 3 14 13 29 3 14 4 MEAN QNH PRESSURE IN HPA 1020.4 1020.4 1020.3 1021.1 1021.7 1019.4 1018.7 1021.0 1023.1 1027.8 1024.1 1025.3 1021.9 MAX. QNH PRESSURE IN HPA 1027.1 1024.8 1027.9 1028.2 1024.3 1025.4 1023.7 1025.2 1027.1 1032.6 1028.5 1031.4 1032.6 DAY 27 9 31 17 27 23 27 31 23 17 20 26 MIN. QNH PRESSURE IN HPA 1012.3 1013.1 1011.9 1015.4 1016.3 1015.8 1013.6 1015.9 1018.8 1023.7 1017.0 1018.6 1011.9 DAY 9 3 12 13 7 3 14 13 29 3 14 4 MEAN QFF PRESSURE IN HPA 1021.9 1018.7 1016.0 1011.0 1007.3 1000.6 998.3 1001.0 1007.0 1017.8 1017.4 1022.9 1011.7 MAX. QFF PRESSURE IN HPA 1029.2 1028.6 1024.6 1018.8 1012.6 1008.5 1003.9 1006.1 1011.5 1022.9 1025.8 1030.9 1030.9 DAY 16 9 23 1 9 23 28 31 30 9 30 27 MIN. QFF PRESSURE IN HPA 1007.0 1007.4 1008.5 1003.3 998.9 996.3 992.0 995.5 1002.5 1010.7 1008.6 1014.0 992.0 DAY 9 3 21 26 29 15 12 13 3 3 14 4 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 797.0 797.0 797.0 797.6 798.2 796.3 795.6 797.5 799.0 802.6 799.7 800.4 798.2 MAX. QFE PRESSURE IN HPA 802.4 800.6 803.2 803.3 800.3 801.2 800.0 800.8 803.0 806.1 803.0 805.5 806.1 DAY 27 8 31 18 27 23 27 31 23 17 20 26 MIN. QFE PRESSURE IN HPA 791.0 791.6 789.4 792.8 794.5 793.4 791.3 793.2 796.2 798.7 795.1 794.2 789.4 DAY 8 4 12 13 7 13 13 12 29 3 14 4 MEAN QNH PRESSURE IN HPA 1019.1 1019.1 1019.0 1019.8 1020.6 1018.3 1017.4 1019.7 1021.6 1025.9 1022.4 1023.2 1020.5 MAX. QNH PRESSURE IN HPA 1025.7 1023.5 1026.7 1026.8 1023.1 1024.2 1022.8 1023.7 1026.4 1030.2 1026.4 1029.5 1030.2 DAY 27 8 31 18 27 23 27 31 23 17 20 26 MIN. QNH PRESSURE IN HPA 1011.8 1012.5 1009.8 1014.0 1016.0 1014.7 1012.1 1014.5 1018.1 1021.2 1016.8 1015.7 1009.8 DAY 8 4 12 13 7 13 13 12 29 3 14 4 MEAN QFF PRESSURE IN HPA 1019.5 1016.1 1014.2 1009.3 1006.0 1000.1 997.2 999.8 1005.4 1015.2 1014.7 1018.5 1009.7 MAX. QFF PRESSURE IN HPA 1027.1 1025.2 1023.0 1016.6 1012.2 1007.1 1003.0 1006.0 1011.3 1020.2 1021.9 1026.4 1027.1 DAY 15 8 23 1 9 23 27 31 23 9 30 26 MIN. QFF PRESSURE IN HPA 1007.0 1007.2 1006.4 1001.9 999.2 995.1 990.8 993.7 1001.1 1007.4 1007.7 1008.6 990.8 DAY 8 23 21 26 29 15 12 13 3 3 14 4 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 796.0 795.9 795.5 796.2 797.1 795.0 794.4 796.1 797.5 801.3 798.8 799.3 796.9 MAX. QFE PRESSURE IN HPA 801.1 799.5 801.5 801.2 799.0 799.1 798.9 799.2 801.1 804.5 801.8 804.5 804.5 DAY 6 7 31 18 27 23 27 31 23 17 20 26 MIN. QFE PRESSURE IN HPA 790.9 790.3 788.4 791.4 793.5 791.8 790.0 791.0 794.9 797.2 794.9 792.8 788.4 DAY 8 4 12 13 7 25 9 12 3 3 16 4 MEAN QNH PRESSURE IN HPA 1017.9 1017.7 1017.3 1018.1 1019.2 1016.6 1015.9 1017.9 1019.7 1024.3 1021.3 1021.9 1019.0 MAX. QNH PRESSURE IN HPA 1024.1 1022.1 1024.6 1024.2 1021.5 1021.7 1021.4 1021.8 1024.1 1028.2 1025.0 1028.2 1028.2 DAY 6 7 31 18 27 23 27 31 23 17 20 26 MIN. QNH PRESSURE IN HPA 1011.6 1010.9 1008.6 1012.3 1014.8 1012.7 1010.5 1011.8 1016.5 1019.3 1016.5 1014.0 1008.6 DAY 8 4 12 13 7 25 9 12 3 3 16 4 MEAN QFF PRESSURE IN HPA 1017.9 1014.8 1012.5 1008.0 1005.2 999.0 996.5 998.9 1004.2 1014.1 1013.9 1017.3 1008.5 MAX. QFF PRESSURE IN HPA 1027.5 1025.3 1020.2 1014.2 1009.4 1004.8 1002.4 1004.9 1010.5 1018.7 1020.8 1024.8 1027.5 DAY 15 7 23 1 9 23 28 31 23 8 30 26 MIN. QFF PRESSURE IN HPA 1006.3 1007.3 1003.3 1001.6 999.4 994.3 989.2 992.6 999.6 1006.4 1007.3 1006.9 989.2 DAY 9 21 21 26 28 13 13 22 3 3 10 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 796.8 796.7 796.1 796.6 797.3 794.7 794.0 795.7 797.5 801.9 799.7 800.3 797.3 MAX. QFE PRESSURE IN HPA 801.8 800.6 801.3 801.3 799.2 798.7 798.9 799.1 801.5 805.5 802.7 805.5 805.5 DAY 6 7 30 16 27 23 27 31 23 17 3 26 MIN. QFE PRESSURE IN HPA 790.6 790.8 791.0 791.7 793.6 791.6 789.6 790.6 794.1 797.4 796.0 793.6 789.6 DAY 8 4 12 12 31 25 9 12 3 3 15 4 MEAN QNH PRESSURE IN HPA 1018.9 1018.7 1018.0 1018.6 1019.4 1016.3 1015.4 1017.6 1019.7 1025.1 1022.3 1023.1 1019.4 MAX. QNH PRESSURE IN HPA 1025.0 1023.5 1024.3 1024.3 1021.8 1021.2 1021.4 1021.7 1024.6 1029.5 1026.0 1029.5 1029.5 DAY 6 7 30 16 27 23 27 31 23 17 3 26 MIN. QNH PRESSURE IN HPA 1011.3 1011.5 1011.8 1012.6 1014.9 1012.5 1010.1 1011.3 1015.6 1019.6 1017.9 1014.9 1010.1 DAY 8 4 12 12 31 25 9 12 3 3 15 4 MEAN QFF PRESSURE IN HPA 1020.7 1017.9 1014.5 1010.0 1006.4 999.1 996.8 999.6 1006.0 1017.0 1017.4 1021.5 1010.6 MAX. QFF PRESSURE IN HPA 1028.0 1028.4 1021.4 1015.3 1010.9 1004.2 1003.6 1006.1 1012.4 1021.8 1027.1 1028.3 1028.4 DAY 19 7 23 16 9 23 27 31 23 9 30 26 MIN. QFF PRESSURE IN HPA 1005.0 1008.7 1008.6 1002.1 999.6 994.7 989.5 992.5 999.9 1009.1 1010.6 1011.8 989.5 DAY 8 21 21 26 31 14 9 12 3 3 10 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 797.6 797.4 797.0 798.0 798.5 796.0 795.3 797.0 798.8 802.9 800.4 801.2 798.3 MAX. QFE PRESSURE IN HPA 802.8 801.6 802.7 803.4 800.4 800.0 800.0 800.5 802.3 806.4 803.9 806.6 806.6 DAY 26 7 31 16 27 22 27 30 23 16 1 26 MIN. QFE PRESSURE IN HPA 790.5 791.1 792.3 793.4 795.5 792.4 791.0 791.7 796.0 798.7 795.9 794.7 790.5 DAY 8 4 21 12 31 25 14 12 3 3 13 4 MEAN QNH PRESSURE IN HPA 1019.8 1019.6 1019.1 1020.3 1020.9 1017.9 1017.0 1019.1 1021.2 1026.2 1023.3 1024.2 1020.7 MAX. QNH PRESSURE IN HPA 1026.2 1024.7 1026.0 1026.9 1023.2 1022.8 1022.8 1023.4 1025.6 1030.6 1027.5 1030.8 1030.8 DAY 26 7 31 16 27 22 27 30 23 16 1 26 MIN. QNH PRESSURE IN HPA 1011.2 1011.9 1013.4 1014.7 1017.3 1013.5 1011.8 1012.6 1017.9 1021.2 1017.7 1016.3 1011.2 DAY 8 4 21 12 31 25 14 12 3 3 13 4 MEAN QFF PRESSURE IN HPA 1021.1 1017.8 1014.7 1010.1 1006.5 999.0 996.7 999.1 1005.1 1016.2 1016.8 1021.7 1010.4 MAX. QFF PRESSURE IN HPA 1029.4 1029.3 1022.4 1015.9 1011.1 1005.6 1002.8 1004.3 1010.4 1021.6 1026.0 1030.4 1030.4 DAY 15 7 23 15 9 22 27 30 18 8 30 26 MIN. QFF PRESSURE IN HPA 1004.1 1008.5 1007.8 1004.5 1000.5 994.6 989.5 992.5 999.4 1008.0 1008.0 1011.3 989.5 DAY 8 2 5 26 31 25 14 12 4 3 10 4 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 797.2 797.2 796.9 797.8 798.4 796.3 795.7 797.4 798.9 802.8 800.0 801.0 798.3 MAX. QFE PRESSURE IN HPA 802.3 801.6 802.1 803.7 800.8 800.5 800.0 801.3 802.6 806.6 803.2 806.4 806.6 DAY 26 7 31 16 18 22 27 30 23 16 20 26 MIN. QFE PRESSURE IN HPA 790.9 789.6 792.2 793.3 795.4 793.2 791.5 792.0 796.2 799.1 795.0 795.1 789.6 DAY 8 4 21 12 31 25 13 12 3 3 13 4 MEAN QNH PRESSURE IN HPA 1019.3 1019.3 1019.0 1020.0 1020.8 1018.2 1017.5 1019.6 1021.4 1026.2 1022.8 1023.9 1020.7 MAX. QNH PRESSURE IN HPA 1025.6 1024.7 1025.3 1027.3 1023.7 1023.4 1022.8 1024.3 1025.9 1030.8 1026.7 1030.6 1030.8 DAY 26 7 31 16 18 22 27 30 23 16 20 26 MIN. QNH PRESSURE IN HPA 1011.6 1010.1 1013.2 1014.6 1017.1 1014.5 1012.4 1013.0 1018.1 1021.7 1016.6 1016.8 1010.1 DAY 8 4 21 12 31 25 13 12 3 3 13 4 MEAN QFF PRESSURE IN HPA 1019.6 1016.3 1014.1 1009.4 1006.0 999.9 997.3 999.8 1005.2 1015.5 1015.2 1019.1 1009.8 MAX. QFF PRESSURE IN HPA 1028.5 1028.7 1020.8 1015.9 1011.3 1006.0 1003.1 1006.1 1011.3 1020.8 1023.7 1027.4 1028.7 DAY 15 7 23 15 9 23 27 30 23 8 30 26 MIN. QFF PRESSURE IN HPA 1005.2 1006.5 1006.0 1002.7 999.9 995.4 990.9 992.0 1000.1 1008.4 1006.2 1010.7 990.9 DAY 8 2 8 26 31 13 11 12 3 3 10 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.0 3.9 8.5 13.9 18.4 24.2 28.1 27.2 18.0 13.1 9.8 3.2 14.3 MINIMUN AIR TEMPERATURE (C) -4.3 -4.0 1.6 6.8 10.4 13.7 19.0 17.1 9.2 5.8 3.8 -2.8 6.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 6 2 0 0 0 0 8 DAYS WITH MINIMUM TEMP. <=-4 17 18 0 0 0 0 0 0 0 0 0 12 47 DAYS WITH FREEZING MIN.<= 0 24 24 10 0 0 0 0 0 0 1 4 23 86 TEMPERATURE RECORDS LOWEST(C) -13.6 -11.0 -3.0 1.4 4.4 10.0 16.8 13.0 3.0 -0.2 -2.6 -11.4 -13.6 DAY 11 20 17 6 7 6 19 21 22 13 12 8 MAXIMUM AIR TEMPERATURE (C) 10.4 11.8 15.6 21.0 25.5 32.2 35.6 35.2 25.9 20.8 16.4 10.1 21.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 25 31 31 4 0 0 0 92 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 1 1 TEMPERATURE RECORDS HIGHEST(C) 17.8 16.8 21.6 27.0 30.4 35.0 38.0 38.4 33.0 26.2 21.6 15.2 38.4 DAY 3 27 31 28 31 25 21 5 1 1 4 28 DIF. BETWEEN (MAX.-MIN.) (C) 14.7 15.8 14.0 14.2 15.1 18.5 16.6 18.1 16.7 15.0 12.6 12.9 15.3 MEAN DAILY TEMP. (MDT) (C) 3.1 3.9 8.6 13.9 18.0 22.9 27.3 26.1 17.6 13.3 10.1 3.7 14.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.2 60.4 189.4 159.1 10.2 0.0 0.0 0.0 421.3 HEATING DEG. DAYS(BASE 18 0C) 462.3 394.7 291.7 125.3 26.0 0.0 0.0 0.0 47.2 145.7 236.8 444.6 2174.3 DEWPOINT (MEAN C) -8.0 -11.0 -7.1 -2.5 -1.6 -1.9 2.1 0.4 -5.7 0.3 -1.7 -8.2 -3.7 MIXING RATIO (G/KG) 2.76 2.23 3.15 4.28 4.56 4.36 5.78 5.18 3.37 5.24 4.50 2.86 4.02 VAPOUR PRESSURE (HPA) 3.52 2.84 4.00 5.45 5.80 5.53 7.29 6.55 4.31 6.69 5.75 3.65 5.12 SATURATION DEF. (HPA) 4.69 5.79 7.68 11.36 16.34 26.30 32.36 31.24 17.72 9.13 6.90 4.59 14.51 RELATIVE HUMIDITY (MEAN %) 49 39 40 38 30 19 21 19 22 47 50 48 35 RELATIVE HUMIDITY (MAX. %) 72 62 67 65 51 31 32 31 36 69 72 69 55 RELATIVE HUMIDITY (MIN. %) 25 17 18 17 16 11 12 11 12 24 27 24 18 RELATIVE HUMIDITY (MEAN% 03UTC) 63 56 60 60 44 30 32 29 34 65 64 61 50 RELATIVE HUMIDITY (MEAN% 09UTC) 33 25 25 22 19 13 14 13 14 28 31 28 22 RELATIVE HUMIDITY (MEAN% 15UTC) 40 28 28 26 20 13 15 13 15 39 47 41 27 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 8.1 9.5 38.1 23.5 5.5 0.0 0.0 0.0 0.0 26.1 77.5 27.8 216.1 DAYS WITH PRECIPITATION >=10 0 0 1 1 0 0 0 0 0 0 3 1 6 DAYS WITH PRECIPITATION >= 5 1 1 2 2 0 0 0 0 0 4 3 2 15 DAYS WITH PRECIPITATION >= 1 4 2 5 4 2 0 0 0 0 4 4 4 29 DAYS WITH PRECIPITATION 5 3 10 8 5 0 2 1 2 13 8 10 67 GREATEST DAILY PRECIPITATION 5.0 6.1 24.0 12.0 3.2 0.0 0.0 0.0 0.0 8.0 48.0 16.0 48.0 DAY 24 1 12 17 6 ** ** ** ** 21 17 3 DAY WITH THUNDER STORM 0 0 1 2 3 0 1 0 1 5 1 1 15 DAYS WITH SNOW OR SLEET 3 2 1 0 0 0 0 0 0 0 0 0 6 DAYS WITH DUST 1 0 1 2 4 2 3 0 2 0 0 0 15 WIND DIRECTION (PREVAILING) 225 225 225 225 225 315 360 360 360 360 225 225 360 PREVAILING WIND SPEED(KNOTS) 11.6 14.7 15.4 12.8 13.2 5.6 12.5 9.5 11.2 9.4 11.4 14.2 10.0 PREVAILING WIND PERCENT 10.1 17.4 15.7 12.9 12.5 15.8 15.3 14.1 32.1 12.9 12.5 18.2 11.6 CALMS PERCENT OF WIND 58.9 50.9 56.9 60.4 52.0 41.3 56.0 56.0 40.4 62.5 59.6 55.9 54.3 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 247 2919 VECTOR WIND DIRECTION (MEAN) 271 260 233 280 285 274 8 14 356 334 220 240 286 VECTOR WIND MAGNITUDE(KNOTS) 2.0 4.2 3.2 1.5 2.7 2.8 2.4 2.2 4.5 2.1 2.5 3.2 1.8 WIND STEADINESES (MEAN %) 54.1 70.0 68.1 35.7 54.0 48.3 57.1 62.9 84.9 67.7 69.4 62.7 40.0 WIND SPEED (MEAN KNOTS) 3.7 6.0 4.7 4.2 5.0 5.8 4.2 3.5 5.3 3.1 3.6 5.1 4.5 FASTEST WIND DIRECTION 240 230 260 360 240 220 10 220 190 180 210 210 260 FASTEST WIND SPEED (KNOTS) 35 35 39 29 29 33 29 23 35 31 35 35 39 DAY 4 11 8 11 4 4 1 9 4 17 30 3 DAYS WITH SKY CLEAR (0-2)/8 16 18 18 15 16 29 19 27 24 17 11 22 232 DAYS WITH P.CLOUDY (3-6)/8 11 10 9 10 12 1 11 4 6 11 16 9 110 DAYS WITH CLOUDY (7-8)/8 4 0 4 5 3 0 1 0 0 3 3 0 23 DAYS WITH VISIBILITY =< 2 KM 0 0 0 1 0 0 0 0 1 0 0 0 2 DURATION OF SUNSHINE HOURS 220.8 251.5 264.0 261.9 305.4 362.2 309.7 335.6 276.5 251.7 207.1 259.4 3305.8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 798.1 795.3 796.6 798.5 798.0 794.0 792.3 794.4 800.4 802.3 801.8 799.0 797.6 MAX. QFE PRESSURE IN HPA 805.5 801.3 802.8 804.3 803.5 798.7 795.9 798.8 807.7 807.3 808.2 803.8 808.2 DAY-HOUR 10- 6 20- 6 31- 6 29- 6 15- 6 9- 6 3- 3 23- 6 23- 6 10- 6 22- 6 15- 6 MIN. QFE PRESSURE IN HPA 788.9 788.5 787.6 791.9 791.9 788.7 788.5 789.8 792.6 797.2 794.2 788.3 787.6 DAY-HOUR 16-12 12- 3 12-12 3-12 1-12 29-12 21-15 1-15 1-15 3-12 30-21 4-12 MEAN QNH PRESSURE IN HPA 1020.4 1017.0 1018.6 1020.9 1020.4 1015.4 1013.3 1015.9 1023.2 1025.5 1024.9 1021.5 1019.8 MAX. QNH PRESSURE IN HPA 1029.5 1024.3 1026.2 1028.0 1027.0 1021.2 1017.7 1021.3 1032.2 1031.7 1032.8 1027.4 1032.8 DAY-HOUR 10- 6 20- 6 31- 6 29- 6 15- 6 9- 6 3- 3 23- 6 23- 6 10- 6 22- 6 15- 6 MIN. QNH PRESSURE IN HPA 1009.2 1008.7 1007.6 1012.9 1012.9 1009.0 1008.7 1010.3 1013.7 1019.3 1015.7 1008.5 1007.6 DAY-HOUR 16-12 12- 3 12-12 3-12 1-12 29-12 21-15 1-15 1-15 3-12 30-21 4-12 MEAN QFF PRESSURE IN HPA 1019.3 1015.0 1012.6 1010.3 1006.2 996.7 991.5 994.7 1009.5 1015.5 1017.8 1020.2 1009.1 MAX. QFF PRESSURE IN HPA 1033.6 1029.8 1022.6 1021.6 1014.4 1004.5 999.0 1003.7 1022.8 1025.0 1027.3 1035.2 1035.2 DAY-HOUR 10- 3 20- 6 18- 3 5-15 15- 3 9- 3 3- 3 23- 3 24- 3 10- 3 22- 6 8- 3 MIN. QFF PRESSURE IN HPA 1003.3 1000.9 999.8 1001.7 999.4 989.5 986.1 988.4 995.3 1006.0 1006.3 1002.7 986.1 DAY-HOUR 16- 9 12- 0 12-12 30-12 1-12 27-12 21-12 10-12 1-12 3-12 30-21 3-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 798.1 795.1 796.3 798.4 797.8 794.0 792.5 794.4 800.2 802.3 801.6 798.7 797.5 MAX. QFE PRESSURE IN HPA 804.3 799.5 800.4 802.3 802.6 797.2 794.9 797.5 805.7 805.7 806.9 802.7 806.9 DAY 10 21 19 15 15 1 14 8 24 10 22 8 MIN. QFE PRESSURE IN HPA 790.9 789.0 789.1 792.7 793.4 790.2 790.4 790.8 794.4 799.7 795.2 789.2 789.0 DAY 26 12 12 3 1 29 21 2 1 3 26 4 MEAN QNH PRESSURE IN HPA 1020.5 1016.8 1018.3 1020.8 1020.1 1015.4 1013.5 1016.0 1023.0 1025.5 1024.7 1021.2 1019.7 MAX. QNH PRESSURE IN HPA 1028.0 1022.1 1023.2 1025.6 1025.9 1019.3 1016.5 1019.7 1029.7 1029.7 1031.2 1026.0 1031.2 DAY 10 21 19 15 15 1 14 8 24 10 22 8 MIN. QNH PRESSURE IN HPA 1011.6 1009.3 1009.4 1013.8 1014.7 1010.8 1011.0 1011.5 1015.9 1022.4 1016.9 1009.6 1009.3 DAY 26 12 12 3 1 29 21 2 1 3 26 4 MEAN QFF PRESSURE IN HPA 1018.3 1013.8 1011.7 1010.1 1006.0 996.9 991.7 994.9 1009.0 1015.1 1016.6 1018.8 1008.6 MAX. QFF PRESSURE IN HPA 1030.9 1027.2 1019.9 1019.5 1012.7 1002.6 996.1 1001.2 1020.0 1021.1 1023.3 1034.0 1034.0 DAY 10 20 18 6 15 10 3 23 23 10 22 8 MIN. QFF PRESSURE IN HPA 1006.8 1000.9 1001.5 1003.4 1000.3 990.9 988.1 990.7 997.2 1009.5 1009.5 1004.8 988.1 DAY 16 12 12 26 1 29 21 1 1 1 26 4 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 798.5 795.5 797.0 799.1 798.6 794.9 793.2 795.3 801.0 802.7 802.0 799.0 798.1 MAX. QFE PRESSURE IN HPA 804.6 799.9 801.2 803.4 803.2 798.5 795.9 798.0 806.4 806.3 807.0 802.5 807.0 DAY 10 20 18 29 15 9 3 16 23 10 22 8 MIN. QFE PRESSURE IN HPA 791.4 788.5 789.0 793.5 793.6 791.0 790.9 791.7 795.5 800.0 796.5 789.2 788.5 DAY 26 12 12 3 1 29 21 2 1 16 26 4 MEAN QNH PRESSURE IN HPA 1020.9 1017.3 1019.1 1021.7 1021.0 1016.5 1014.4 1017.0 1023.9 1026.0 1025.2 1021.5 1020.4 MAX. QNH PRESSURE IN HPA 1028.4 1022.6 1024.2 1026.9 1026.7 1020.9 1017.7 1020.3 1030.6 1030.4 1031.3 1025.8 1031.3 DAY 10 20 18 29 15 9 3 16 23 10 22 8 MIN. QNH PRESSURE IN HPA 1012.3 1008.7 1009.3 1014.8 1014.9 1011.8 1011.6 1012.6 1017.3 1022.8 1018.5 1009.6 1008.7 DAY 26 12 12 3 1 29 21 2 1 16 26 4 MEAN QFF PRESSURE IN HPA 1021.1 1016.5 1014.2 1012.3 1007.6 998.9 993.8 997.4 1012.3 1017.6 1019.4 1021.6 1011.1 MAX. QFF PRESSURE IN HPA 1033.6 1029.1 1022.6 1020.8 1014.4 1004.5 999.0 1003.7 1022.8 1025.0 1026.4 1035.2 1035.2 DAY 10 20 18 6 15 9 3 23 24 10 22 8 MIN. QFF PRESSURE IN HPA 1008.5 1002.3 1002.7 1005.3 1001.1 993.1 989.9 992.5 1000.1 1010.5 1012.0 1005.1 989.9 DAY 16 12 12 26 1 29 21 1 2 2 5 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 799.5 796.6 797.9 799.8 799.1 795.2 793.5 795.8 801.7 803.6 803.1 800.3 798.8 MAX. QFE PRESSURE IN HPA 805.5 801.3 802.8 804.3 803.5 798.7 795.9 798.8 807.7 807.3 808.2 803.8 808.2 DAY 10 20 31 29 15 9 3 23 23 10 22 15 MIN. QFE PRESSURE IN HPA 792.6 789.7 788.9 794.2 793.9 790.8 791.2 792.4 795.8 800.5 798.7 789.8 788.9 DAY 25 12 12 3 1 29 8 2 1 3 17 4 MEAN QNH PRESSURE IN HPA 1022.1 1018.6 1020.2 1022.5 1021.7 1016.9 1014.9 1017.7 1024.9 1027.1 1026.5 1023.1 1021.3 MAX. QNH PRESSURE IN HPA 1029.5 1024.3 1026.2 1028.0 1027.0 1021.2 1017.7 1021.3 1032.2 1031.7 1032.8 1027.4 1032.8 DAY 10 20 31 29 15 9 3 23 23 10 22 15 MIN. QNH PRESSURE IN HPA 1013.7 1010.2 1009.2 1015.7 1015.3 1011.5 1012.0 1013.5 1017.6 1023.4 1021.2 1010.3 1009.2 DAY 25 12 12 3 1 29 8 2 1 3 17 4 MEAN QFF PRESSURE IN HPA 1021.7 1017.1 1014.3 1011.4 1007.1 997.3 992.6 995.7 1011.0 1016.9 1019.8 1022.4 1010.6 MAX. QFF PRESSURE IN HPA 1033.5 1029.8 1021.3 1020.7 1012.5 1002.1 997.0 1002.0 1021.8 1023.8 1027.3 1034.4 1034.4 DAY 10 20 18 5 15 9 3 23 23 10 22 8 MIN. QFF PRESSURE IN HPA 1009.2 1004.2 1003.5 1004.3 1001.9 992.1 989.3 990.4 999.2 1010.2 1013.6 1005.5 989.3 DAY 5 12 12 2 1 29 7 1 2 3 5 4 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 798.0 795.3 796.9 798.7 798.2 794.2 792.5 794.6 800.6 802.0 801.7 798.9 797.6 MAX. QFE PRESSURE IN HPA 804.0 800.2 801.5 803.1 802.3 798.2 794.7 797.7 806.5 806.1 806.9 802.3 806.9 DAY 10 20 18 5 15 9 3 23 23 10 21 28 MIN. QFE PRESSURE IN HPA 790.3 789.5 788.6 793.0 793.0 789.9 790.4 791.6 794.9 798.8 796.0 789.1 788.6 DAY 16 12 12 3 1 29 21 2 1 3 17 4 MEAN QNH PRESSURE IN HPA 1020.4 1017.0 1019.0 1021.2 1020.5 1015.7 1013.6 1016.2 1023.4 1025.2 1024.8 1021.4 1019.9 MAX. QNH PRESSURE IN HPA 1027.6 1023.0 1024.6 1026.5 1025.6 1020.6 1016.3 1019.9 1030.7 1030.2 1031.2 1025.6 1031.2 DAY 10 20 18 5 15 9 3 23 23 10 21 28 MIN. QNH PRESSURE IN HPA 1010.9 1009.9 1008.8 1014.2 1014.2 1010.4 1011.0 1012.5 1016.5 1021.3 1017.9 1009.4 1008.8 DAY 16 12 12 3 1 29 21 2 1 3 17 4 MEAN QFF PRESSURE IN HPA 1018.2 1014.3 1012.3 1009.9 1006.0 996.4 991.0 994.1 1008.3 1014.3 1016.8 1019.2 1008.4 MAX. QFF PRESSURE IN HPA 1030.3 1026.8 1019.9 1019.3 1011.1 1003.3 994.9 1000.8 1019.4 1021.4 1024.2 1029.7 1030.3 DAY 10 20 18 5 15 9 13 23 22 10 21 7 MIN. QFF PRESSURE IN HPA 1003.3 1003.0 1001.3 1004.6 1000.9 991.2 986.9 989.5 996.9 1007.0 1012.5 1004.5 986.9 DAY 16 12 12 2 1 27 7 1 4 3 17 4 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 796.8 793.8 795.5 797.2 797.0 792.9 791.1 793.1 799.0 800.8 800.8 797.9 796.3 MAX. QFE PRESSURE IN HPA 802.6 798.9 799.7 802.3 801.5 796.9 793.5 796.4 805.6 804.4 805.9 801.0 805.9 DAY 9 20 18 5 15 9 13 22 23 11 21 28 MIN. QFE PRESSURE IN HPA 788.9 788.9 787.6 791.9 791.9 788.7 788.7 790.4 792.8 797.2 796.2 788.3 787.6 DAY 16 12 12 3 1 29 21 2 1 3 17 4 MEAN QNH PRESSURE IN HPA 1018.9 1015.2 1017.2 1019.3 1019.1 1014.1 1011.9 1014.4 1021.6 1023.7 1023.7 1020.2 1018.3 MAX. QNH PRESSURE IN HPA 1025.9 1021.4 1022.4 1025.6 1024.6 1019.0 1014.8 1018.4 1029.6 1028.1 1030.0 1024.0 1030.0 DAY 9 20 18 5 15 9 13 22 23 11 21 28 MIN. QNH PRESSURE IN HPA 1009.2 1009.2 1007.6 1012.9 1012.9 1009.0 1009.0 1011.0 1014.0 1019.3 1018.1 1008.5 1007.6 DAY 16 12 12 3 1 29 21 2 1 3 17 4 MEAN QFF PRESSURE IN HPA 1016.7 1012.2 1010.6 1008.6 1005.0 995.5 990.0 993.4 1007.6 1013.4 1015.8 1017.8 1007.2 MAX. QFF PRESSURE IN HPA 1028.2 1024.5 1018.1 1019.5 1011.9 1002.3 994.1 1000.5 1019.9 1020.2 1022.9 1029.0 1029.0 DAY 9 20 17 5 15 9 13 23 23 11 21 7 MIN. QFF PRESSURE IN HPA 1003.8 1002.5 999.8 1001.7 999.4 989.5 986.1 988.4 995.3 1006.0 1010.9 1005.4 986.1 DAY 16 12 12 30 1 27 21 10 1 3 30 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 797.6 794.6 795.7 797.5 797.0 792.7 790.9 792.9 799.3 801.6 801.5 798.7 796.7 MAX. QFE PRESSURE IN HPA 803.8 799.3 800.5 802.8 801.2 796.2 793.6 796.2 805.6 805.3 806.4 802.0 806.4 DAY 9 20 18 5 15 9 13 22 23 10 22 28 MIN. QFE PRESSURE IN HPA 788.9 790.4 788.3 791.9 792.3 788.7 788.5 789.8 792.6 797.8 795.5 788.9 788.3 DAY 16 12 12 3 1 29 21 1 1 3 30 4 MEAN QNH PRESSURE IN HPA 1019.8 1016.2 1017.5 1019.7 1019.1 1013.9 1011.6 1014.1 1021.9 1024.7 1024.5 1021.2 1018.7 MAX. QNH PRESSURE IN HPA 1027.4 1021.9 1023.4 1026.2 1024.2 1018.1 1014.9 1018.1 1029.6 1029.2 1030.6 1025.2 1030.6 DAY 9 20 18 5 15 9 13 22 23 10 22 28 MIN. QNH PRESSURE IN HPA 1009.2 1011.0 1008.5 1012.9 1013.4 1009.0 1008.7 1010.3 1013.7 1020.1 1017.3 1009.2 1008.5 DAY 16 12 12 3 1 29 21 1 1 3 30 4 MEAN QFF PRESSURE IN HPA 1019.9 1015.4 1012.6 1010.3 1005.7 996.1 990.9 994.5 1010.4 1016.3 1018.7 1021.3 1009.3 MAX. QFF PRESSURE IN HPA 1031.7 1026.6 1021.0 1021.6 1012.3 1001.7 995.0 1001.6 1021.3 1023.7 1025.9 1031.9 1031.9 DAY 9 20 18 5 15 9 13 22 23 10 21 7 MIN. QFF PRESSURE IN HPA 1004.7 1005.8 1003.3 1004.0 1000.2 989.9 987.0 989.8 996.8 1009.5 1009.4 1006.6 987.0 DAY 16 12 12 30 1 29 21 11 1 3 30 3 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 798.3 795.8 797.0 798.7 798.4 794.1 792.2 794.1 800.6 802.6 802.0 799.4 797.8 MAX. QFE PRESSURE IN HPA 804.4 800.8 801.6 803.5 802.7 797.7 794.6 797.2 806.6 805.7 807.2 802.7 807.2 DAY 9 20 31 5 14 9 13 22 23 9 21 28 MIN. QFE PRESSURE IN HPA 790.8 791.2 790.3 793.0 793.8 790.3 789.5 790.6 794.8 799.7 795.1 790.0 789.5 DAY 23 11 12 2 1 27 21 1 2 3 30 3 MEAN QNH PRESSURE IN HPA 1020.7 1017.6 1019.1 1021.2 1020.7 1015.5 1013.2 1015.6 1023.5 1026.0 1025.2 1022.1 1020.0 MAX. QNH PRESSURE IN HPA 1028.1 1023.7 1024.7 1027.0 1026.0 1019.9 1016.2 1019.3 1030.8 1029.7 1031.5 1026.0 1031.5 DAY 9 20 31 5 14 9 13 22 23 9 21 28 MIN. QNH PRESSURE IN HPA 1011.5 1012.0 1010.9 1014.2 1015.2 1010.9 1009.9 1011.3 1016.4 1022.4 1016.8 1010.5 1009.9 DAY 23 11 12 2 1 27 21 1 2 3 30 3 MEAN QFF PRESSURE IN HPA 1020.2 1016.0 1013.0 1010.1 1006.0 996.0 990.9 993.6 1009.5 1015.7 1018.4 1021.3 1009.2 MAX. QFF PRESSURE IN HPA 1031.3 1028.8 1020.7 1021.1 1011.7 1000.8 995.5 999.8 1020.0 1021.9 1027.0 1033.1 1033.1 DAY 9 20 2 5 14 9 2 22 22 11 21 7 MIN. QFF PRESSURE IN HPA 1009.0 1006.6 1005.7 1004.0 1000.3 990.6 986.6 988.5 997.3 1009.3 1009.0 1003.0 986.6 DAY 16 11 12 2 31 27 21 1 2 3 30 3 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 798.1 795.7 796.9 798.7 798.4 794.2 792.7 794.7 800.7 802.7 801.7 799.2 797.8 MAX. QFE PRESSURE IN HPA 804.1 800.3 801.1 803.3 802.6 797.9 795.2 797.4 806.4 805.7 807.0 802.5 807.0 DAY 18 20 31 5 14 8 13 22 23 9 21 7 MIN. QFE PRESSURE IN HPA 790.7 790.6 790.4 793.0 793.8 790.3 790.7 790.8 795.2 800.0 794.2 790.0 790.0 DAY 25 11 11 2 1 28 8 2 1 2 30 3 MEAN QNH PRESSURE IN HPA 1020.5 1017.5 1018.9 1021.2 1020.8 1015.7 1013.8 1016.2 1023.6 1026.0 1024.8 1021.8 1020.1 MAX. QNH PRESSURE IN HPA 1027.8 1023.1 1024.1 1026.8 1025.9 1020.2 1016.9 1019.6 1030.6 1029.7 1031.3 1025.8 1031.3 DAY 18 20 31 5 14 8 13 22 23 9 21 7 MIN. QNH PRESSURE IN HPA 1011.4 1011.3 1011.0 1014.2 1015.2 1010.9 1011.4 1011.5 1016.9 1022.8 1015.7 1010.5 1010.5 DAY 25 11 11 2 1 28 8 2 1 2 30 3 MEAN QFF PRESSURE IN HPA 1018.2 1014.8 1012.0 1009.8 1006.1 996.3 991.1 994.2 1008.6 1015.0 1016.7 1019.5 1008.5 MAX. QFF PRESSURE IN HPA 1031.1 1026.9 1020.7 1020.6 1011.8 1003.1 995.6 1000.5 1020.6 1021.2 1024.1 1033.2 1033.2 DAY 9 19 17 5 16 8 2 23 22 9 21 7 MIN. QFF PRESSURE IN HPA 1008.4 1003.2 1004.1 1002.2 1001.3 991.2 988.2 989.1 996.8 1008.8 1006.3 1002.7 988.2 DAY 15 11 11 30 31 27 8 2 1 2 30 3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.1 4.2 7.6 12.7 16.9 22.6 27.3 25.1 20.8 13.7 9.0 1.6 13.8 MINIMUN AIR TEMPERATURE (C) -2.3 -1.3 0.9 6.2 9.2 13.1 16.6 14.5 11.6 5.1 0.7 -3.4 5.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 11 9 3 0 0 0 0 0 0 0 4 16 43 DAYS WITH FREEZING MIN.<= 0 25 18 14 0 0 0 0 0 0 0 12 30 99 TEMPERATURE RECORDS LOWEST(C) -7.2 -8.0 -5.2 0.8 5.4 8.0 12.0 11.4 6.6 0.4 -9.0 -7.4 -9.0 DAY 23 26 1 1 10 1 27 10 23 21 28 20 MAXIMUM AIR TEMPERATURE (C) 11.3 10.5 14.3 19.7 24.2 30.2 35.0 33.2 29.2 22.4 17.8 8.3 21.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 20 31 31 12 0 0 0 94 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 14.0 14.4 21.4 23.4 27.0 34.2 37.4 34.6 31.6 27.4 21.6 13.0 37.4 DAY 17 21 25 30 7 11 13 6 5 2 3 2 DIF. BETWEEN (MAX.-MIN.) (C) 13.6 11.8 13.4 13.5 15.0 17.1 18.4 18.7 17.6 17.3 17.1 11.7 15.4 MEAN DAILY TEMP. (MDT) (C) 4.5 4.6 7.6 12.9 16.7 21.6 25.8 23.8 20.4 13.7 9.2 2.5 13.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 43.6 148.8 88.0 12.3 0.0 0.0 0.0 292.7 HEATING DEG. DAYS(BASE 18 0C) 419.5 374.8 321.9 151.9 43.2 4.6 0.0 0.0 3.4 133.5 262.9 481.3 2197.0 DEWPOINT (MEAN C) -6.9 -7.0 -5.5 -2.8 -1.0 -0.7 -0.3 -4.2 -4.1 -3.3 -9.3 -5.8 -4.2 MIXING RATIO (G/KG) 3.00 3.09 3.52 4.21 5.02 4.87 4.86 3.72 3.64 3.92 2.58 3.25 3.81 VAPOUR PRESSURE (HPA) 3.84 3.94 4.48 5.35 6.39 6.18 6.15 4.73 4.64 5.01 3.31 4.15 4.85 SATURATION DEF. (HPA) 4.73 4.68 6.50 10.01 13.75 22.83 32.01 29.10 21.41 12.02 9.16 3.01 14.10 RELATIVE HUMIDITY (MEAN %) 50 49 45 40 37 26 18 16 21 37 31 62 36 RELATIVE HUMIDITY (MAX. %) 74 72 67 64 59 46 30 28 35 56 52 83 56 RELATIVE HUMIDITY (MIN. %) 25 26 25 19 18 12 10 8 10 19 12 37 18 RELATIVE HUMIDITY (MEAN% 03UTC) 67 65 64 56 54 42 29 26 34 54 46 75 51 RELATIVE HUMIDITY (MEAN% 09UTC) 31 33 30 28 21 16 12 9 12 22 15 43 23 RELATIVE HUMIDITY (MEAN% 15UTC) 39 39 34 27 29 14 11 9 13 28 24 57 27 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 16.5 20.6 26.3 16.8 53.5 1.8 0.0 0.0 0.0 28.0 0.0 27.4 190.9 DAYS WITH PRECIPITATION >=10 1 1 1 0 3 0 0 0 0 1 0 1 8 DAYS WITH PRECIPITATION >= 5 1 2 1 1 4 0 0 0 0 1 0 2 12 DAYS WITH PRECIPITATION >= 1 2 3 4 6 7 1 0 0 0 2 0 6 31 DAYS WITH PRECIPITATION 4 7 7 10 8 1 0 0 0 5 0 8 50 GREATEST DAILY PRECIPITATION 14.0 10.4 17.4 7.2 18.0 1.8 0.0 0.0 0.0 27.0 0.0 12.4 27.0 DAY 13 5 14 23 29 1 ** ** ** 22 ** 6 DAY WITH THUNDER STORM 0 0 1 1 6 1 0 0 0 1 0 0 10 DAYS WITH SNOW OR SLEET 2 0 0 0 0 0 0 0 0 0 0 4 6 DAYS WITH DUST 0 0 0 2 1 1 0 0 1 0 0 0 5 WIND DIRECTION (PREVAILING) 225 225 225 225 360 225 360 360 360 360 225 225 360 PREVAILING WIND SPEED(KNOTS) 13.7 13.0 11.5 11.7 12.1 12.0 11.5 9.4 8.6 8.5 12.5 10.7 9.2 PREVAILING WIND PERCENT 11.7 10.7 9.7 13.8 9.3 10.0 15.7 19.0 9.6 9.3 7.9 4.8 9.0 CALMS PERCENT OF WIND 68.5 61.2 64.9 60.0 67.3 67.9 54.0 58.9 64.6 67.7 76.7 83.1 66.3 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 257 243 272 257 319 267 345 14 330 315 259 272 290 VECTOR WIND MAGNITUDE(KNOTS) 2.2 1.4 1.5 2.6 1.6 0.9 1.6 2.4 1.0 1.2 1.6 0.6 1.1 WIND STEADINESES (MEAN %) 73.3 38.9 46.9 68.4 47.1 28.1 32.0 68.6 35.7 48.0 69.6 42.9 35.5 WIND SPEED (MEAN KNOTS) 3.0 3.6 3.2 3.8 3.4 3.2 5.0 3.5 2.8 2.5 2.3 1.4 3.1 FASTEST WIND DIRECTION 250 240 280 240 10 210 10 10 210 240 220 210 250 FASTEST WIND SPEED (KNOTS) 29 25 27 25 27 29 25 19 27 23 29 19 29 DAY 11 8 18 22 1 22 24 3 20 18 25 6 DAYS WITH SKY CLEAR (0-2)/8 20 14 17 9 15 28 29 30 26 27 25 15 255 DAYS WITH P.CLOUDY (3-6)/8 8 10 8 14 14 2 2 1 4 3 5 11 82 DAYS WITH CLOUDY (7-8)/8 3 4 6 7 2 0 0 0 0 1 0 5 28 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 1 0 1 0 7 9 DURATION OF SUNSHINE HOURS 251.1 228.0 246.6 236.7 289.6 360.3 370.3 365.8 310.5 307.1 283.9 189.3 3439.2 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 799.5 796.5 796.7 797.1 799.1 795.5 792.6 796.2 798.4 800.9 800.4 798.9 797.7 MAX. QFE PRESSURE IN HPA 805.8 801.8 803.3 802.5 804.6 801.6 797.2 801.0 804.6 807.5 806.1 802.7 807.5 DAY-HOUR 7- 6 1-18 3- 6 4- 6 26-18 1-18 4- 6 25- 6 13- 6 27- 6 16- 6 23-18 MIN. QFE PRESSURE IN HPA 794.2 789.3 791.0 790.4 793.4 791.5 788.4 792.3 793.9 795.2 792.5 793.5 788.4 DAY-HOUR 25-12 23-15 27- 0 24-15 10-15 30-15 16-15 8-15 5-15 14-12 25-21 12-12 MEAN QNH PRESSURE IN HPA 1022.1 1018.5 1018.7 1019.2 1021.6 1017.3 1013.8 1018.1 1020.8 1023.8 1023.3 1021.4 1019.9 MAX. QNH PRESSURE IN HPA 1029.8 1025.0 1026.8 1025.8 1028.4 1024.7 1019.3 1024.0 1028.4 1031.9 1030.2 1026.0 1031.9 DAY-HOUR 7- 6 1-18 3- 6 4- 6 26-18 1-18 4- 6 25- 6 13- 6 27- 6 16- 6 23-18 MIN. QNH PRESSURE IN HPA 1015.7 1009.7 1011.8 1011.0 1014.7 1012.4 1008.6 1013.4 1015.3 1016.9 1013.6 1014.8 1008.6 DAY-HOUR 25-12 23-15 27- 0 24-15 10-15 30-15 16-15 8-15 5-15 14-12 25-21 12-12 MEAN QFF PRESSURE IN HPA 1020.0 1016.0 1013.4 1009.5 1008.5 999.7 992.6 998.7 1004.8 1013.5 1017.0 1021.4 1009.6 MAX. QFF PRESSURE IN HPA 1029.0 1024.4 1024.6 1017.8 1017.3 1013.1 1000.7 1005.1 1012.6 1025.3 1028.6 1029.0 1029.0 DAY-HOUR 7- 6 12- 6 3- 3 1- 3 26-15 1-18 29- 3 11- 3 22- 3 27- 3 28- 3 20- 3 MIN. QFF PRESSURE IN HPA 1011.6 1003.5 1003.1 1002.3 1003.1 993.1 985.7 993.5 999.1 1004.1 1005.1 1011.2 985.7 DAY-HOUR 17-12 23-12 26-12 24-12 9-12 22-18 16-18 8-18 5-12 14-12 25-21 4-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 799.3 796.4 796.3 796.8 798.8 795.6 792.5 796.1 798.3 800.8 800.3 798.9 797.5 MAX. QFE PRESSURE IN HPA 803.9 801.0 801.2 800.5 802.7 799.8 795.3 798.6 802.3 805.5 805.0 802.3 805.5 DAY 7 2 3 12 27 2 29 25 13 26 16 24 MIN. QFE PRESSURE IN HPA 796.0 790.2 791.0 792.4 794.8 792.7 789.7 793.3 795.7 796.8 793.0 794.8 789.7 DAY 22 24 27 24 10 14 17 23 5 16 26 12 MEAN QNH PRESSURE IN HPA 1021.9 1018.3 1018.2 1018.8 1021.3 1017.3 1013.6 1017.9 1020.7 1023.7 1023.2 1021.4 1019.7 MAX. QNH PRESSURE IN HPA 1027.5 1024.0 1024.2 1023.4 1026.0 1022.5 1017.0 1021.0 1025.6 1029.5 1028.9 1025.6 1029.5 DAY 7 2 3 12 27 2 29 25 13 26 16 24 MIN. QNH PRESSURE IN HPA 1017.9 1010.8 1011.8 1013.5 1016.4 1013.8 1010.2 1014.6 1017.5 1018.8 1014.2 1016.4 1010.2 DAY 22 24 27 24 10 14 17 23 5 16 26 12 MEAN QFF PRESSURE IN HPA 1018.8 1015.1 1012.5 1008.9 1008.2 1000.1 992.7 998.8 1004.4 1012.8 1015.8 1020.3 1009.0 MAX. QFF PRESSURE IN HPA 1025.5 1021.4 1021.4 1015.3 1015.1 1009.7 998.1 1003.4 1009.2 1022.2 1024.8 1026.7 1026.7 DAY 7 2 3 1 27 1 29 11 23 27 28 19 MIN. QFF PRESSURE IN HPA 1012.1 1005.9 1004.0 1004.3 1004.0 994.6 988.2 994.1 999.1 1006.1 1007.0 1013.5 988.2 DAY 1 23 26 22 7 14 17 23 1 13 26 6 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 799.6 796.7 796.8 797.6 799.5 796.4 793.4 796.9 799.1 801.3 801.0 799.2 798.1 MAX. QFE PRESSURE IN HPA 804.8 801.0 802.3 801.3 803.0 800.1 796.7 800.1 803.7 806.1 805.4 802.1 806.1 DAY 7 2 3 4 27 2 29 25 13 27 16 20 MIN. QFE PRESSURE IN HPA 795.3 791.3 791.7 793.3 795.7 793.5 790.3 794.2 796.3 797.8 795.0 794.6 790.3 DAY 1 24 27 24 11 14 17 23 5 16 26 4 MEAN QNH PRESSURE IN HPA 1022.2 1018.7 1018.9 1019.8 1022.2 1018.3 1014.7 1018.9 1021.7 1024.4 1024.0 1021.7 1020.4 MAX. QNH PRESSURE IN HPA 1028.6 1024.0 1025.6 1024.3 1026.4 1022.9 1018.7 1022.9 1027.3 1030.2 1029.3 1025.3 1030.2 DAY 7 2 3 4 27 2 29 25 13 27 16 20 MIN. QNH PRESSURE IN HPA 1017.0 1012.1 1012.6 1014.6 1017.5 1014.8 1010.9 1015.7 1018.2 1020.1 1016.6 1016.2 1010.9 DAY 1 24 27 24 11 14 17 23 5 16 26 4 MEAN QFF PRESSURE IN HPA 1021.3 1017.0 1014.9 1010.8 1009.9 1001.4 994.4 1001.0 1007.0 1015.7 1019.6 1022.8 1011.3 MAX. QFF PRESSURE IN HPA 1028.8 1023.4 1024.6 1017.8 1016.3 1012.6 1000.7 1005.1 1012.6 1025.3 1028.6 1029.0 1029.0 DAY 7 2 3 1 27 1 29 11 22 27 28 20 MIN. QFF PRESSURE IN HPA 1012.7 1006.5 1004.8 1005.5 1006.6 995.1 989.3 996.9 1001.9 1009.1 1012.3 1012.5 989.3 DAY 1 23 26 23 10 22 17 9 1 13 12 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 800.7 797.7 798.0 798.4 800.1 796.8 793.7 797.5 799.9 802.3 801.9 800.2 798.9 MAX. QFE PRESSURE IN HPA 805.8 801.5 803.3 802.5 803.6 800.6 797.2 801.0 804.6 807.5 806.1 802.7 807.5 DAY 7 1 3 4 27 1 4 25 13 27 16 30 MIN. QFE PRESSURE IN HPA 796.8 792.7 792.8 793.3 796.4 794.0 790.4 794.4 797.2 798.4 796.2 795.3 790.4 DAY 22 23 27 24 11 14 17 3 5 13 26 4 MEAN QNH PRESSURE IN HPA 1023.7 1020.0 1020.3 1020.8 1022.9 1018.8 1015.1 1019.7 1022.6 1025.6 1025.0 1022.9 1021.4 MAX. QNH PRESSURE IN HPA 1029.8 1024.6 1026.8 1025.8 1027.1 1023.5 1019.3 1024.0 1028.4 1031.9 1030.2 1026.0 1031.9 DAY 7 1 3 4 27 1 4 25 13 27 16 30 MIN. QNH PRESSURE IN HPA 1018.8 1013.8 1014.0 1014.6 1018.4 1015.4 1011.0 1015.9 1019.3 1020.8 1018.1 1017.0 1011.0 DAY 22 23 27 24 11 14 17 3 5 13 26 4 MEAN QFF PRESSURE IN HPA 1022.3 1017.9 1014.8 1011.0 1009.2 1000.8 993.1 999.4 1006.0 1015.0 1019.1 1023.8 1011.0 MAX. QFF PRESSURE IN HPA 1029.0 1024.4 1023.2 1016.6 1015.5 1012.9 998.8 1004.9 1011.7 1024.7 1027.5 1028.9 1029.0 DAY 7 12 3 1 27 1 29 11 22 27 30 20 MIN. QFF PRESSURE IN HPA 1016.0 1007.0 1006.1 1006.5 1006.2 994.1 986.6 994.8 1001.6 1006.6 1012.0 1014.5 986.6 DAY 11 23 26 24 11 22 17 8 1 13 12 6 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 799.4 796.7 797.0 797.4 799.1 795.8 792.9 796.6 798.6 800.8 800.1 798.7 797.8 MAX. QFE PRESSURE IN HPA 804.7 800.3 802.5 801.3 802.1 800.3 795.8 799.8 802.9 805.6 804.5 801.2 805.6 DAY 7 1 3 11 3 1 4 25 13 27 15 20 MIN. QFE PRESSURE IN HPA 795.6 792.0 792.8 792.2 795.4 793.1 790.0 794.1 795.7 796.8 794.1 794.4 790.0 DAY 22 23 18 24 15 22 17 8 5 14 26 4 MEAN QNH PRESSURE IN HPA 1022.0 1018.7 1019.1 1019.6 1021.7 1017.6 1014.1 1018.6 1021.0 1023.7 1022.9 1021.2 1020.0 MAX. QNH PRESSURE IN HPA 1028.5 1023.1 1025.8 1024.3 1025.3 1023.1 1017.6 1022.5 1026.3 1029.6 1028.2 1024.2 1029.6 DAY 7 1 3 11 3 1 4 25 13 27 15 20 MIN. QNH PRESSURE IN HPA 1017.4 1013.0 1014.0 1013.2 1017.1 1014.3 1010.5 1015.6 1017.5 1018.8 1015.6 1015.9 1010.5 DAY 22 23 18 24 15 22 17 8 5 14 26 4 MEAN QFF PRESSURE IN HPA 1019.1 1015.6 1013.2 1009.7 1008.1 1000.0 992.3 998.5 1004.4 1012.5 1015.4 1020.3 1009.1 MAX. QFF PRESSURE IN HPA 1027.2 1021.1 1022.8 1014.8 1012.0 1011.2 997.3 1002.5 1009.2 1021.8 1022.8 1025.7 1027.2 DAY 7 14 3 1 26 1 4 11 22 27 30 20 MIN. QFF PRESSURE IN HPA 1012.9 1006.9 1004.5 1004.4 1004.9 994.0 987.5 993.9 1000.1 1004.7 1008.3 1012.1 987.5 DAY 17 23 26 24 9 22 17 8 7 13 12 6 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 798.2 795.4 795.5 796.0 798.0 794.5 791.7 795.2 797.1 799.5 798.9 797.5 796.5 MAX. QFE PRESSURE IN HPA 803.9 799.6 800.9 799.8 801.9 799.1 794.6 798.3 801.3 804.5 803.1 799.9 804.5 DAY 7 1 3 11 26 1 28 25 13 25 16 28 MIN. QFE PRESSURE IN HPA 794.2 789.7 791.7 790.5 793.5 791.8 788.9 792.5 794.4 795.2 794.0 793.5 788.9 DAY 25 23 26 24 10 22 16 3 5 14 26 12 MEAN QNH PRESSURE IN HPA 1020.6 1017.1 1017.2 1017.8 1020.3 1016.0 1012.6 1016.9 1019.2 1022.2 1021.4 1019.7 1018.4 MAX. QNH PRESSURE IN HPA 1027.5 1022.3 1023.8 1022.5 1025.1 1021.7 1016.2 1020.7 1024.3 1028.2 1026.5 1022.6 1028.2 DAY 7 1 3 11 26 1 28 25 13 25 16 28 MIN. QNH PRESSURE IN HPA 1015.7 1010.2 1012.6 1011.2 1014.8 1012.7 1009.2 1013.6 1015.9 1016.9 1015.4 1014.8 1009.2 DAY 25 23 26 24 10 22 16 3 5 14 26 12 MEAN QFF PRESSURE IN HPA 1017.5 1014.0 1011.5 1007.9 1007.4 998.7 991.8 997.9 1003.0 1011.4 1014.3 1018.6 1007.8 MAX. QFF PRESSURE IN HPA 1026.4 1019.4 1021.0 1013.1 1013.8 1008.9 997.5 1002.3 1008.5 1020.7 1022.8 1023.2 1026.4 DAY 7 14 3 12 26 1 28 11 22 27 30 20 MIN. QFF PRESSURE IN HPA 1011.6 1003.5 1003.1 1002.3 1003.1 993.3 987.0 993.8 999.1 1004.1 1008.2 1011.2 987.0 DAY 17 23 26 24 9 22 16 3 5 14 6 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 799.0 796.0 795.9 796.1 798.4 794.1 791.4 794.9 797.2 800.1 799.9 798.6 796.8 MAX. QFE PRESSURE IN HPA 804.4 800.7 800.5 800.1 804.0 798.9 794.7 797.7 801.2 805.0 803.8 801.1 805.0 DAY 7 1 3 11 26 2 31 25 12 26 15 23 MIN. QFE PRESSURE IN HPA 794.8 789.3 792.1 790.4 793.4 791.5 788.4 792.3 793.9 796.1 794.4 795.5 788.4 DAY 25 23 26 24 10 30 16 8 5 14 25 12 MEAN QNH PRESSURE IN HPA 1021.6 1017.8 1017.7 1018.0 1020.8 1015.6 1012.3 1016.5 1019.3 1022.9 1022.6 1021.0 1018.8 MAX. QNH PRESSURE IN HPA 1028.1 1023.6 1023.4 1022.9 1027.6 1021.4 1016.3 1019.9 1024.2 1028.9 1027.4 1024.1 1028.9 DAY 7 1 3 11 26 2 31 25 12 26 15 23 MIN. QNH PRESSURE IN HPA 1016.4 1009.7 1013.1 1011.0 1014.7 1012.4 1008.6 1013.4 1015.3 1018.0 1015.9 1017.3 1008.6 DAY 25 23 26 24 10 30 16 8 5 14 25 12 MEAN QFF PRESSURE IN HPA 1020.5 1016.2 1013.6 1009.0 1008.7 998.6 992.1 998.5 1004.7 1014.3 1018.4 1022.0 1009.7 MAX. QFF PRESSURE IN HPA 1028.9 1021.4 1022.3 1014.1 1017.3 1009.3 997.9 1003.0 1010.6 1023.6 1027.1 1027.1 1028.9 DAY 7 13 3 12 26 1 28 10 22 27 27 20 MIN. QFF PRESSURE IN HPA 1013.2 1004.7 1004.9 1003.4 1003.6 993.7 986.9 994.5 999.7 1008.5 1011.7 1013.7 986.9 DAY 17 23 26 24 10 30 16 8 5 5 11 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 799.9 796.9 797.1 797.3 799.5 795.4 792.7 796.0 798.5 801.1 800.7 799.4 797.9 MAX. QFE PRESSURE IN HPA 804.5 801.8 801.6 801.8 804.6 801.6 796.1 798.5 802.5 806.2 804.6 802.7 806.2 DAY 7 1 3 11 26 1 31 25 12 26 15 23 MIN. QFE PRESSURE IN HPA 795.8 790.8 793.1 792.4 794.9 792.1 789.3 793.4 795.6 796.8 793.7 796.1 789.3 DAY 25 23 26 24 10 22 16 22 5 14 25 12 MEAN QNH PRESSURE IN HPA 1022.6 1019.0 1019.2 1019.5 1022.1 1017.1 1013.9 1017.9 1021.0 1024.2 1023.6 1022.0 1020.2 MAX. QNH PRESSURE IN HPA 1028.2 1025.0 1024.7 1025.0 1028.4 1024.7 1018.0 1020.9 1025.8 1030.3 1028.4 1026.0 1030.3 DAY 7 1 3 11 26 1 31 25 12 26 15 23 MIN. QNH PRESSURE IN HPA 1017.6 1011.5 1014.3 1013.5 1016.5 1013.1 1009.7 1014.7 1017.4 1018.8 1015.1 1018.0 1009.7 DAY 25 23 26 24 10 22 16 22 5 14 25 12 MEAN QFF PRESSURE IN HPA 1021.2 1016.9 1013.6 1009.5 1008.4 999.0 991.9 997.6 1004.4 1013.6 1017.8 1022.8 1009.7 MAX. QFF PRESSURE IN HPA 1028.5 1022.2 1021.4 1014.1 1016.3 1013.1 996.9 1003.2 1009.9 1023.0 1026.8 1027.9 1028.5 DAY 7 13 3 11 26 1 28 10 22 26 27 14 MIN. QFF PRESSURE IN HPA 1014.1 1006.1 1006.0 1004.4 1004.7 993.1 985.7 993.5 999.8 1007.0 1008.8 1016.3 985.7 DAY 17 23 26 16 10 22 16 8 5 3 25 4 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 799.7 796.7 796.9 797.3 799.5 795.7 792.9 796.4 798.6 801.1 800.7 799.1 797.9 MAX. QFE PRESSURE IN HPA 803.9 801.4 801.6 801.9 804.0 800.7 796.2 799.2 802.3 806.2 805.0 802.3 806.2 DAY 6 1 3 11 26 1 31 24 12 26 15 23 MIN. QFE PRESSURE IN HPA 795.8 790.6 791.9 792.6 795.6 792.4 789.7 793.8 795.7 796.9 792.5 794.6 789.7 DAY 25 23 26 24 9 30 16 22 4 15 25 5 MEAN QNH PRESSURE IN HPA 1022.4 1018.8 1019.0 1019.4 1022.1 1017.4 1014.1 1018.3 1021.1 1024.1 1023.6 1021.7 1020.2 MAX. QNH PRESSURE IN HPA 1027.5 1024.5 1024.7 1025.1 1027.6 1023.6 1018.1 1021.8 1025.6 1030.3 1028.9 1025.6 1030.3 DAY 6 1 3 11 26 1 31 24 12 26 15 23 MIN. QNH PRESSURE IN HPA 1017.6 1011.3 1012.9 1013.7 1017.4 1013.5 1010.2 1015.2 1017.5 1019.0 1013.6 1016.2 1010.2 DAY 25 23 26 24 9 30 16 22 4 15 25 5 MEAN QFF PRESSURE IN HPA 1019.4 1015.8 1012.9 1009.3 1008.3 999.6 992.3 998.2 1004.5 1012.8 1016.1 1020.8 1009.2 MAX. QFF PRESSURE IN HPA 1025.7 1021.1 1021.1 1014.9 1014.5 1011.2 997.5 1002.7 1009.1 1022.7 1025.6 1026.4 1026.4 DAY 7 13 3 11 26 1 28 10 22 26 27 18 MIN. QFF PRESSURE IN HPA 1012.0 1007.1 1004.5 1004.3 1004.5 993.4 986.9 994.0 999.6 1005.8 1005.1 1012.6 986.9 DAY 16 23 26 19 5 13 16 22 6 12 25 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.3 5.4 7.5 13.4 18.5 24.4 24.7 24.5 21.6 13.9 7.3 5.5 13.8 MINIMUN AIR TEMPERATURE (C) -6.8 -0.0 2.0 6.5 10.4 14.9 16.1 15.1 11.9 4.9 0.2 -1.6 6.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 1 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 19 5 0 0 0 0 0 0 0 0 1 4 29 DAYS WITH FREEZING MIN.<= 0 29 16 10 1 0 0 0 0 0 2 15 25 98 TEMPERATURE RECORDS LOWEST(C) -20.2 -5.6 -2.4 -1.4 7.0 10.4 12.2 11.0 8.4 -0.2 -5.0 -5.6 -20.2 DAY 15 14 1 6 2 8 21 4 21 22 13 4 MAXIMUM AIR TEMPERATURE (C) 5.0 11.8 13.5 20.5 25.9 31.7 31.2 31.9 30.7 23.1 15.1 13.7 21.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 4 27 25 27 19 0 0 0 102 DAYS WITH MAXIMUM TEMP. <= 0 5 0 0 0 0 0 0 0 0 0 0 0 5 TEMPERATURE RECORDS HIGHEST(C) 11.8 17.4 20.4 24.8 32.0 33.6 33.2 34.0 34.0 29.0 23.2 18.4 34.0 DAY 5 10 30 23 31 12 11 23 11 1 6 27 DIF. BETWEEN (MAX.-MIN.) (C) 11.8 11.8 11.5 14.0 15.5 16.8 15.1 16.8 18.8 18.2 14.9 15.3 15.1 MEAN DAILY TEMP. (MDT) (C) -0.9 5.9 7.8 13.5 18.2 23.3 23.6 23.5 21.3 14.0 7.7 6.0 13.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.9 69.8 82.2 80.2 28.6 0.0 0.0 0.0 263.7 HEATING DEG. DAYS(BASE 18 0C) 586.9 352.1 317.5 135.4 31.9 0.0 0.0 0.0 0.1 125.6 309.9 370.8 2230.2 DEWPOINT (MEAN C) -7.5 -4.8 -4.5 -4.6 1.1 -2.0 -1.0 -2.3 -2.8 -7.6 -7.5 -7.0 -4.2 MIXING RATIO (G/KG) 2.88 3.50 3.70 3.80 5.38 4.49 4.58 4.28 4.04 2.97 2.95 2.92 3.79 VAPOUR PRESSURE (HPA) 3.68 4.46 4.70 4.84 6.85 5.70 5.82 5.44 5.15 3.80 3.78 3.75 4.83 SATURATION DEF. (HPA) 2.37 4.91 6.06 11.35 15.74 26.22 26.30 26.73 22.52 13.34 7.12 5.83 14.04 RELATIVE HUMIDITY (MEAN %) 66 53 48 35 36 21 20 19 22 27 40 45 36 RELATIVE HUMIDITY (MAX. %) 82 76 71 60 61 35 32 33 35 47 59 68 55 RELATIVE HUMIDITY (MIN. %) 45 28 25 15 18 10 12 10 11 11 22 20 19 RELATIVE HUMIDITY (MEAN% 03UTC) 77 66 63 52 54 33 30 31 34 42 56 66 50 RELATIVE HUMIDITY (MEAN% 09UTC) 50 35 35 21 22 12 13 12 13 14 27 24 23 RELATIVE HUMIDITY (MEAN% 15UTC) 63 46 35 23 24 12 14 12 15 19 34 34 28 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 18.3 18.8 53.9 4.2 11.1 0.8 0.6 0.0 0.0 0.0 18.2 1.0 126.9 DAYS WITH PRECIPITATION >=10 0 0 1 0 0 0 0 0 0 0 1 0 2 DAYS WITH PRECIPITATION >= 5 2 2 3 0 1 0 0 0 0 0 1 0 9 DAYS WITH PRECIPITATION >= 1 4 5 6 2 2 0 0 0 0 0 3 1 23 DAYS WITH PRECIPITATION 7 9 11 6 8 1 3 0 0 2 5 2 54 GREATEST DAILY PRECIPITATION 8.1 7.0 27.7 2.1 8.5 0.8 0.3 0.0 0.0 0.0 16.0 1.0 27.7 DAY 12 5 7 15 12 14 11 ** ** ** 28 15 DAY WITH THUNDER STORM 0 0 2 1 4 0 1 0 0 1 1 0 10 DAYS WITH SNOW OR SLEET 3 1 0 0 0 0 0 0 0 0 0 0 4 DAYS WITH DUST 0 0 1 0 0 0 0 1 6 0 0 0 8 WIND DIRECTION (PREVAILING) 270 270 225 225 360 270 270 270 270 360 360 225 270 PREVAILING WIND SPEED(KNOTS) 5.8 9.4 14.5 13.6 7.6 9.8 10.9 8.6 7.7 8.6 9.1 10.0 9.4 PREVAILING WIND PERCENT 6.9 16.4 23.0 16.3 11.3 20.8 29.0 31.9 7.5 11.3 6.7 4.4 13.0 CALMS PERCENT OF WIND 77.4 56.0 46.4 49.2 72.2 59.6 45.2 57.7 75.8 66.1 84.6 84.3 64.5 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 296 243 229 247 302 267 303 262 292 291 348 269 269 VECTOR WIND MAGNITUDE(KNOTS) 0.8 3.0 2.8 2.0 1.1 2.6 3.2 3.2 0.6 1.5 0.7 0.8 1.6 WIND STEADINESES (MEAN %) 50.0 56.6 40.0 35.1 45.8 68.4 54.2 91.4 35.3 45.5 58.3 66.7 44.4 WIND SPEED (MEAN KNOTS) 1.6 5.3 7.0 5.7 2.4 3.8 5.9 3.5 1.7 3.3 1.2 1.2 3.6 FASTEST WIND DIRECTION 220 180 60 230 280 280 360 260 280 210 270 240 60 FASTEST WIND SPEED (KNOTS) 19 35 39 35 19 25 27 23 17 33 16 16 39 DAY 6 11 2 3 1 30 14 12 4 30 6 14 DAYS WITH SKY CLEAR (0-2)/8 14 11 11 14 12 24 24 24 29 28 19 24 234 DAYS WITH P.CLOUDY (3-6)/8 12 16 15 14 16 5 7 6 1 3 6 7 108 DAYS WITH CLOUDY (7-8)/8 5 2 5 2 3 1 0 1 0 0 5 0 24 DAYS WITH VISIBILITY =< 2 KM 6 1 0 1 0 0 0 0 0 0 0 0 8 DURATION OF SUNSHINE HOURS 201.3 217.3 234.6 290.3 282.8 353.5 341.0 333.2 309.3 308.7 220.1 269.3 3361.4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 797.7 796.1 794.5 797.8 798.7 795.8 796.4 797.0 797.9 801.0 801.7 801.1 798.0 MAX. QFE PRESSURE IN HPA 804.1 802.9 800.3 802.8 803.8 800.9 802.2 802.5 805.0 807.0 809.3 806.1 809.3 DAY-HOUR 26- 6 8-21 29- 6 8- 6 7-18 3- 6 3- 9 30- 6 25- 6 2- 6 18- 6 4- 6 MIN. QFE PRESSURE IN HPA 789.1 786.6 789.6 792.8 794.8 790.0 791.6 791.8 790.9 794.3 795.4 796.2 786.6 DAY-HOUR 12-12 5- 6 17-12 18-12 29-15 19-15 12-15 8-15 20-12 5-12 28-12 15-12 MEAN QNH PRESSURE IN HPA 1019.9 1017.9 1016.0 1020.1 1021.2 1017.6 1018.4 1019.1 1020.2 1024.0 1024.8 1024.1 1020.3 MAX. QNH PRESSURE IN HPA 1027.8 1026.3 1023.1 1026.2 1027.4 1023.8 1025.4 1025.8 1028.9 1031.3 1034.1 1030.2 1034.1 DAY-HOUR 26- 6 8-21 29- 6 8- 6 7-18 3- 6 3- 9 30- 6 25- 6 2- 6 18- 6 4- 6 MIN. QNH PRESSURE IN HPA 1009.4 1006.4 1010.1 1014.0 1016.4 1010.5 1012.5 1012.7 1011.6 1015.8 1017.1 1018.1 1006.4 DAY-HOUR 12-12 5- 6 17-12 18-12 29-15 19-15 12-15 8-15 20-12 5-12 28-12 15-12 MEAN QFF PRESSURE IN HPA 1022.6 1014.4 1010.6 1010.0 1006.8 998.7 999.3 1000.2 1003.5 1013.7 1020.0 1020.9 1010.0 MAX. QFF PRESSURE IN HPA 1037.0 1025.9 1022.0 1019.4 1015.8 1005.8 1006.1 1010.1 1014.0 1024.2 1033.8 1031.5 1037.0 DAY-HOUR 15- 6 24- 6 29- 3 7- 3 7-18 8- 3 4- 3 31- 3 26- 3 20- 3 19- 3 4- 6 MIN. QFF PRESSURE IN HPA 1012.9 1003.0 1004.8 1002.8 1000.0 992.5 991.9 994.0 994.3 1001.7 1009.9 1011.0 991.9 DAY-HOUR 6-18 5- 6 12-12 18-12 29-12 19-15 6-21 9-21 20-12 5-12 2-12 15- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 797.4 795.8 794.3 797.5 798.6 795.9 796.3 796.9 798.0 801.1 801.6 801.0 797.9 MAX. QFE PRESSURE IN HPA 802.6 801.6 799.2 800.9 802.4 799.1 801.0 801.4 803.8 805.3 807.4 804.9 807.4 DAY 26 9 29 8 8 1 4 30 26 2 19 28 MIN. QFE PRESSURE IN HPA 790.6 787.8 791.0 794.3 796.2 792.3 792.6 792.9 792.7 796.0 797.3 797.0 787.8 DAY 12 5 18 19 29 20 7 8 21 6 29 15 MEAN QNH PRESSURE IN HPA 1019.6 1017.6 1015.7 1019.7 1021.1 1017.7 1018.3 1018.9 1020.3 1024.1 1024.7 1023.9 1020.1 MAX. QNH PRESSURE IN HPA 1025.9 1024.7 1021.8 1023.8 1025.7 1021.7 1024.0 1024.5 1027.4 1029.2 1031.8 1028.7 1031.8 DAY 26 9 29 8 8 1 4 30 26 2 19 28 MIN. QNH PRESSURE IN HPA 1011.3 1007.9 1011.8 1015.8 1018.1 1013.4 1013.7 1014.1 1013.8 1017.9 1019.5 1019.1 1007.9 DAY 12 5 18 19 29 20 7 8 21 6 29 15 MEAN QFF PRESSURE IN HPA 1021.5 1013.6 1010.0 1009.2 1006.8 999.0 999.5 1000.0 1003.3 1013.2 1019.0 1019.5 1009.5 MAX. QFF PRESSURE IN HPA 1032.7 1023.2 1018.7 1016.7 1013.6 1004.1 1005.0 1007.2 1011.9 1022.4 1031.0 1026.9 1032.7 DAY 15 23 29 7 8 2 4 31 26 20 19 4 MIN. QFF PRESSURE IN HPA 1015.1 1003.2 1006.2 1003.8 1000.6 994.8 993.3 996.0 997.7 1004.4 1011.6 1011.0 993.3 DAY 7 5 18 13 20 26 7 8 20 6 2 15 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 797.6 796.0 794.5 798.2 799.4 796.7 797.2 797.8 798.7 801.7 802.2 801.3 798.4 MAX. QFE PRESSURE IN HPA 803.3 801.9 800.2 801.9 802.7 800.2 801.9 802.1 803.7 806.1 808.4 805.2 808.4 DAY 26 8 29 23 8 3 3 30 26 2 19 8 MIN. QFE PRESSURE IN HPA 789.7 787.0 791.2 794.9 796.8 793.1 793.6 794.3 793.8 796.3 797.7 796.4 787.0 DAY 12 5 13 11 30 19 7 8 21 6 29 15 MEAN QNH PRESSURE IN HPA 1019.8 1017.9 1016.1 1020.5 1022.1 1018.7 1019.3 1020.0 1021.2 1024.8 1025.5 1024.4 1020.9 MAX. QNH PRESSURE IN HPA 1026.8 1025.1 1023.0 1025.1 1026.0 1023.0 1025.1 1025.3 1027.3 1030.2 1033.0 1029.1 1033.0 DAY 26 8 29 23 8 3 3 30 26 2 19 8 MIN. QNH PRESSURE IN HPA 1010.2 1006.9 1012.0 1016.5 1018.8 1014.3 1014.9 1015.8 1015.2 1018.2 1019.9 1018.4 1006.9 DAY 12 5 13 11 30 19 7 8 21 6 29 15 MEAN QFF PRESSURE IN HPA 1023.5 1015.3 1011.5 1011.4 1008.5 1000.6 1001.1 1002.6 1006.1 1016.3 1022.2 1022.8 1011.8 MAX. QFF PRESSURE IN HPA 1033.6 1025.6 1022.0 1019.4 1014.3 1005.8 1006.1 1010.1 1014.0 1024.2 1033.8 1030.6 1033.8 DAY 26 24 29 7 8 8 4 31 26 20 19 4 MIN. QFF PRESSURE IN HPA 1015.6 1003.7 1006.8 1006.1 1002.9 996.4 995.8 997.9 1000.4 1006.4 1015.2 1013.2 995.8 DAY 6 5 19 13 29 24 7 9 20 6 28 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 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 798.8 797.1 795.5 798.9 800.0 797.1 797.6 798.4 799.5 802.4 803.1 802.5 799.3 MAX. QFE PRESSURE IN HPA 804.1 802.8 800.3 802.8 803.1 800.9 802.2 802.5 805.0 807.0 809.3 806.1 809.3 DAY 26 8 29 8 17 3 4 30 25 2 18 4 MIN. QFE PRESSURE IN HPA 790.6 786.6 790.7 795.0 797.4 793.5 793.8 794.9 794.5 797.3 798.3 798.0 786.6 DAY 12 5 13 3 29 19 7 8 20 6 28 15 MEAN QNH PRESSURE IN HPA 1021.3 1019.2 1017.2 1021.5 1022.7 1019.2 1019.9 1020.8 1022.2 1025.7 1026.5 1025.8 1021.8 MAX. QNH PRESSURE IN HPA 1027.8 1026.2 1023.1 1026.2 1026.5 1023.8 1025.4 1025.8 1028.9 1031.3 1034.1 1030.2 1034.1 DAY 26 8 29 8 17 3 4 30 25 2 18 4 MIN. QNH PRESSURE IN HPA 1011.3 1006.4 1011.4 1016.6 1019.6 1014.8 1015.2 1016.5 1016.0 1019.5 1020.7 1020.3 1006.4 DAY 12 5 13 3 29 19 7 8 20 6 28 15 MEAN QFF PRESSURE IN HPA 1024.9 1016.0 1012.0 1011.2 1007.9 999.9 1000.1 1001.2 1005.0 1015.1 1022.0 1023.4 1011.6 MAX. QFF PRESSURE IN HPA 1037.0 1025.9 1020.9 1017.6 1015.3 1004.5 1004.2 1008.3 1013.7 1022.6 1033.3 1031.5 1037.0 DAY 15 24 29 7 8 3 4 31 25 20 19 4 MIN. QFF PRESSURE IN HPA 1015.9 1003.0 1005.8 1004.3 1001.6 995.5 994.5 997.0 999.0 1005.4 1014.6 1016.1 994.5 DAY 19 5 13 3 29 19 7 8 20 6 28 15 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 797.7 796.3 794.7 798.1 798.8 796.0 796.7 797.3 798.0 800.9 801.5 801.1 798.1 MAX. QFE PRESSURE IN HPA 802.7 802.3 799.2 802.0 802.3 799.9 802.2 801.5 803.6 805.8 807.7 804.4 807.7 DAY 26 8 29 21 17 3 3 30 25 2 18 8 MIN. QFE PRESSURE IN HPA 790.2 787.8 791.1 793.9 796.1 792.3 792.8 793.9 792.2 795.8 796.5 797.2 787.8 DAY 12 5 13 3 29 19 7 8 20 5 28 15 MEAN QNH PRESSURE IN HPA 1020.0 1018.2 1016.2 1020.4 1021.3 1017.9 1018.7 1019.5 1020.3 1023.8 1024.5 1024.0 1020.4 MAX. QNH PRESSURE IN HPA 1026.0 1025.6 1021.8 1025.2 1025.6 1022.6 1025.4 1024.6 1027.1 1029.8 1032.2 1028.1 1032.2 DAY 26 8 29 21 17 3 3 30 25 2 18 8 MIN. QNH PRESSURE IN HPA 1010.8 1007.9 1011.9 1015.3 1018.0 1013.4 1014.0 1015.3 1013.2 1017.6 1018.5 1019.3 1007.9 DAY 12 5 13 3 29 19 7 8 20 5 28 15 MEAN QFF PRESSURE IN HPA 1021.8 1014.0 1010.4 1009.7 1006.4 998.5 998.9 999.7 1002.6 1012.3 1018.7 1019.7 1009.4 MAX. QFF PRESSURE IN HPA 1032.8 1023.3 1017.8 1017.6 1011.1 1003.7 1004.9 1006.4 1011.6 1021.4 1030.8 1026.9 1032.8 DAY 15 24 29 7 7 3 3 31 25 20 18 3 MIN. QFF PRESSURE IN HPA 1014.7 1004.9 1005.7 1002.9 1000.9 994.4 992.5 995.6 995.3 1004.1 1011.8 1012.9 992.5 DAY 19 5 19 3 29 25 7 9 20 5 6 15 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 796.7 795.0 793.4 796.7 797.6 794.7 795.4 796.0 796.7 799.6 800.3 799.8 796.8 MAX. QFE PRESSURE IN HPA 801.6 800.9 797.7 800.8 801.3 798.4 800.9 799.5 802.1 804.5 807.3 803.3 807.3 DAY 26 8 29 21 17 3 3 30 25 2 18 4 MIN. QFE PRESSURE IN HPA 789.1 788.2 789.6 792.8 795.1 790.6 792.0 792.5 790.9 794.3 795.4 796.2 788.2 DAY 12 5 17 18 29 19 12 8 20 5 28 15 MEAN QNH PRESSURE IN HPA 1018.7 1016.7 1014.7 1018.8 1019.8 1016.3 1017.2 1017.8 1018.7 1022.2 1023.1 1022.5 1018.9 MAX. QNH PRESSURE IN HPA 1024.7 1023.8 1019.9 1023.7 1024.3 1020.8 1023.8 1022.1 1025.3 1028.2 1031.7 1026.8 1031.7 DAY 26 8 29 21 17 3 3 30 25 2 18 4 MIN. QNH PRESSURE IN HPA 1009.4 1008.3 1010.1 1014.0 1016.8 1011.3 1013.0 1013.6 1011.6 1015.8 1017.1 1018.1 1008.3 DAY 12 5 17 18 29 19 12 8 20 5 28 15 MEAN QFF PRESSURE IN HPA 1020.6 1012.6 1008.9 1008.4 1005.6 997.7 998.5 999.1 1001.8 1011.4 1017.6 1018.1 1008.3 MAX. QFF PRESSURE IN HPA 1029.6 1021.9 1015.5 1014.1 1011.7 1002.3 1005.2 1005.4 1009.8 1019.3 1030.4 1025.5 1030.4 DAY 15 23 29 6 6 3 3 31 25 20 18 3 MIN. QFF PRESSURE IN HPA 1014.6 1006.5 1004.8 1002.8 1000.0 993.6 993.2 994.4 994.3 1001.7 1009.9 1012.4 993.2 DAY 5 5 12 18 29 19 7 17 20 5 2 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 797.4 795.8 794.0 797.1 797.6 794.4 795.1 795.8 796.8 800.2 801.1 800.7 797.2 MAX. QFE PRESSURE IN HPA 802.0 801.7 797.5 802.1 801.0 798.2 800.3 799.2 802.3 805.0 807.3 804.1 807.3 DAY 26 8 29 8 17 3 3 30 25 2 18 28 MIN. QFE PRESSURE IN HPA 789.7 790.0 790.1 793.4 794.8 790.0 791.6 791.8 791.9 794.9 797.0 797.7 789.7 DAY 12 5 16 18 29 19 12 8 20 5 29 15 MEAN QNH PRESSURE IN HPA 1019.5 1017.6 1015.4 1019.2 1019.9 1015.9 1016.8 1017.7 1018.8 1023.0 1024.1 1023.6 1019.3 MAX. QNH PRESSURE IN HPA 1025.2 1024.8 1019.7 1025.3 1024.0 1020.6 1023.1 1021.8 1025.6 1028.9 1031.7 1027.8 1031.7 DAY 26 8 29 8 17 3 3 30 25 2 18 28 MIN. QNH PRESSURE IN HPA 1010.2 1010.5 1010.7 1014.7 1016.4 1010.5 1012.5 1012.7 1012.9 1016.5 1019.1 1019.9 1010.2 DAY 12 5 16 18 29 19 12 8 20 5 29 15 MEAN QFF PRESSURE IN HPA 1022.8 1015.0 1010.7 1010.1 1006.3 997.9 998.7 1000.2 1003.6 1014.6 1020.6 1021.9 1010.2 MAX. QFF PRESSURE IN HPA 1032.4 1023.9 1017.7 1018.6 1012.7 1002.5 1004.3 1007.3 1012.0 1022.7 1032.3 1029.5 1032.4 DAY 14 23 28 8 6 1 3 31 25 19 18 3 MIN. QFF PRESSURE IN HPA 1015.7 1008.6 1006.2 1004.7 1000.3 992.5 993.6 994.6 998.5 1004.3 1014.9 1016.9 992.5 DAY 6 21 3 10 29 19 12 8 19 5 2 11 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 798.1 796.5 795.0 798.2 798.9 795.7 796.5 797.0 797.9 801.3 801.9 801.5 798.2 MAX. QFE PRESSURE IN HPA 802.6 802.7 799.0 801.9 803.8 798.8 801.0 800.9 803.8 805.6 808.7 804.7 808.7 DAY 25 8 28 8 7 1 3 30 25 2 18 7 MIN. QFE PRESSURE IN HPA 790.3 791.2 791.0 794.8 796.4 791.6 793.2 793.4 792.9 795.8 797.6 798.5 790.3 DAY 12 5 13 10 29 19 11 7 20 5 28 14 MEAN QNH PRESSURE IN HPA 1020.4 1018.4 1016.6 1020.6 1021.4 1017.4 1018.5 1019.1 1020.2 1024.3 1025.1 1024.6 1020.6 MAX. QNH PRESSURE IN HPA 1025.9 1026.0 1021.5 1025.1 1027.4 1021.3 1024.0 1023.8 1027.4 1029.6 1033.4 1028.5 1033.4 DAY 25 8 28 8 7 1 3 30 25 2 18 7 MIN. QNH PRESSURE IN HPA 1010.9 1012.0 1011.8 1016.4 1018.4 1012.5 1014.5 1014.7 1014.1 1017.6 1019.8 1020.9 1010.9 DAY 12 5 13 10 29 19 11 7 20 5 28 14 MEAN QFF PRESSURE IN HPA 1023.9 1015.2 1011.3 1010.3 1006.5 998.0 998.7 999.4 1003.1 1013.8 1020.6 1022.2 1010.3 MAX. QFF PRESSURE IN HPA 1035.8 1024.3 1018.2 1017.5 1015.8 1002.7 1003.2 1006.6 1012.5 1021.3 1032.2 1031.1 1035.8 DAY 15 23 28 6 7 7 3 31 25 19 18 3 MIN. QFF PRESSURE IN HPA 1012.9 1007.5 1006.9 1004.6 1000.8 992.8 993.7 994.4 997.8 1003.3 1014.4 1015.7 992.8 DAY 6 4 12 18 29 25 11 9 20 5 6 22 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 797.8 796.2 794.9 798.1 799.0 796.0 796.8 797.2 798.1 801.3 801.9 801.2 798.2 MAX. QFE PRESSURE IN HPA 802.8 802.9 799.6 801.4 802.8 799.6 801.4 801.9 803.8 805.2 808.4 804.7 808.4 DAY 26 8 28 7 7 1 3 30 25 2 18 3 MIN. QFE PRESSURE IN HPA 790.5 788.6 790.9 794.4 796.3 791.9 792.9 793.0 792.7 796.1 797.6 797.7 788.6 DAY 12 4 12 18 28 19 6 7 20 5 28 14 MEAN QNH PRESSURE IN HPA 1020.1 1018.1 1016.5 1020.4 1021.6 1017.9 1018.8 1019.4 1020.4 1024.3 1025.0 1024.2 1020.6 MAX. QNH PRESSURE IN HPA 1026.2 1026.3 1022.3 1024.5 1026.2 1022.3 1024.5 1025.1 1027.4 1029.1 1033.0 1028.5 1033.0 DAY 26 8 28 7 7 1 3 30 25 2 18 3 MIN. QNH PRESSURE IN HPA 1011.2 1008.8 1011.6 1015.9 1018.2 1012.9 1014.1 1014.2 1013.8 1018.0 1019.8 1019.9 1008.8 DAY 12 4 12 18 28 19 6 7 20 5 28 14 MEAN QFF PRESSURE IN HPA 1021.9 1013.8 1010.5 1009.6 1006.5 998.3 998.9 999.5 1002.6 1012.9 1019.3 1019.8 1009.5 MAX. QFF PRESSURE IN HPA 1032.8 1024.5 1018.1 1017.9 1013.3 1003.6 1004.4 1006.8 1012.0 1021.6 1032.0 1028.3 1032.8 DAY 14 23 28 6 7 1 3 30 25 19 18 3 MIN. QFF PRESSURE IN HPA 1013.7 1003.4 1005.5 1003.5 1000.7 992.9 991.9 994.0 996.6 1004.5 1011.6 1011.3 991.9 DAY 6 4 25 18 28 24 6 9 19 4 6 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.1 3.4 6.3 11.8 17.6 23.2 28.8 26.1 21.1 15.5 7.0 3.4 13.9 MINIMUN AIR TEMPERATURE (C) -4.1 -3.5 0.0 5.2 9.3 14.3 19.5 15.8 11.5 7.4 1.1 -2.8 6.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 11 0 0 0 0 0 11 DAYS WITH MINIMUM TEMP. <=-4 16 14 1 0 0 0 0 0 0 0 2 15 48 DAYS WITH FREEZING MIN.<= 0 28 23 19 3 0 0 0 0 0 0 12 27 112 TEMPERATURE RECORDS LOWEST(C) -11.6 -12.2 -6.4 -3.0 2.4 10.6 15.4 9.4 7.8 1.6 -4.6 -7.8 -12.2 DAY 19 8 1 12 6 3 1 30 10 27 30 22 MAXIMUM AIR TEMPERATURE (C) 9.3 11.0 12.9 18.8 24.4 30.6 36.1 34.2 29.9 23.7 13.6 10.9 21.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 19 31 30 13 0 0 0 93 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 13.6 18.4 19.0 25.8 29.6 35.0 38.6 36.8 32.8 28.4 19.2 14.6 38.6 DAY 10 21 2 28 27 16 13 2 1 6 6 9 DIF. BETWEEN (MAX.-MIN.) (C) 13.4 14.5 12.9 13.6 15.1 16.3 16.6 18.4 18.4 16.3 12.5 13.7 15.2 MEAN DAILY TEMP. (MDT) (C) 2.6 3.8 6.5 12.0 16.8 22.5 27.8 25.0 20.7 15.5 7.3 4.0 13.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 50.4 211.5 124.3 14.4 0.0 0.0 0.0 400.6 HEATING DEG. DAYS(BASE 18 0C) 477.8 398.8 356.9 181.0 53.2 0.0 0.0 0.0 0.0 81.7 319.9 432.9 2302.2 DEWPOINT (MEAN C) -8.0 -10.6 -6.8 -2.3 -0.9 2.0 3.3 -0.8 -4.3 -2.9 -1.7 -5.6 -3.2 MIXING RATIO (G/KG) 2.72 2.34 3.14 4.52 4.64 5.82 6.27 4.64 3.61 4.00 4.31 3.27 4.11 VAPOUR PRESSURE (HPA) 3.47 2.98 3.98 5.74 5.92 7.38 7.92 5.89 4.62 5.12 5.51 4.17 5.22 SATURATION DEF. (HPA) 4.09 5.51 5.99 8.83 15.28 22.31 33.43 29.98 22.03 13.58 4.98 4.02 14.17 RELATIVE HUMIDITY (MEAN %) 52 40 44 45 33 28 21 19 20 32 57 56 37 RELATIVE HUMIDITY (MAX. %) 71 63 70 70 54 46 32 29 34 50 79 79 56 RELATIVE HUMIDITY (MIN. %) 31 17 21 22 17 15 13 11 9 16 36 29 20 RELATIVE HUMIDITY (MEAN% 03UTC) 66 58 63 64 50 43 31 28 33 48 75 72 53 RELATIVE HUMIDITY (MEAN% 09UTC) 36 23 31 27 21 17 14 13 12 18 40 36 24 RELATIVE HUMIDITY (MEAN% 15UTC) 45 31 35 35 21 20 15 12 12 23 49 51 29 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 14.6 0.0 31.2 49.0 3.8 6.9 0.0 0.0 0.0 0.6 5.3 9.9 121.3 DAYS WITH PRECIPITATION >=10 1 0 0 2 0 0 0 0 0 0 0 0 3 DAYS WITH PRECIPITATION >= 5 1 0 3 5 0 0 0 0 0 0 0 0 9 DAYS WITH PRECIPITATION >= 1 2 0 7 7 1 2 0 0 0 0 2 4 25 DAYS WITH PRECIPITATION 5 0 10 12 6 6 0 0 0 2 6 8 55 GREATEST DAILY PRECIPITATION 11.5 0.0 8.0 14.0 3.3 3.0 0.0 0.0 0.0 0.6 3.0 3.1 14.0 DAY 17 ** 25 18 5 1 ** ** ** 23 9 1 DAY WITH THUNDER STORM 0 0 0 2 3 4 0 0 0 0 0 0 9 DAYS WITH SNOW OR SLEET 4 0 2 0 0 0 0 0 0 0 0 1 7 DAYS WITH DUST 0 0 1 0 0 1 0 0 0 0 1 0 3 WIND DIRECTION (PREVAILING) 225 225 225 225 360 360 360 360 315 360 360 270 225 PREVAILING WIND SPEED(KNOTS) 14.1 13.1 13.4 14.6 8.7 10.5 9.4 10.4 7.6 10.7 10.6 8.3 12.6 PREVAILING WIND PERCENT 8.9 19.2 24.2 16.3 8.5 10.0 8.9 14.1 10.8 8.9 6.3 8.1 8.6 CALMS PERCENT OF WIND 74.2 58.5 55.2 60.4 67.3 74.2 69.0 55.6 64.2 75.0 85.4 76.6 68.0 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 249 236 235 244 281 312 332 16 324 321 343 266 273 VECTOR WIND MAGNITUDE(KNOTS) 1.8 3.4 4.5 2.8 1.2 0.8 0.5 3.0 1.7 1.6 0.6 1.5 1.3 WIND STEADINESES (MEAN %) 69.2 69.4 81.8 56.0 40.0 33.3 18.5 69.8 54.8 64.0 46.2 71.4 39.4 WIND SPEED (MEAN KNOTS) 2.6 4.9 5.5 5.0 3.0 2.4 2.7 4.3 3.1 2.5 1.3 2.1 3.3 FASTEST WIND DIRECTION 210 30 230 270 220 20 180 360 210 270 10 240 230 FASTEST WIND SPEED (KNOTS) 39 35 43 35 33 25 19 23 23 19 17 23 43 DAY 16 7 8 9 19 19 5 25 6 2 7 9 DAYS WITH SKY CLEAR (0-2)/8 22 23 15 13 16 18 16 31 30 15 12 19 230 DAYS WITH P.CLOUDY (3-6)/8 6 5 13 14 13 11 15 0 0 15 11 8 111 DAYS WITH CLOUDY (7-8)/8 3 0 3 3 2 1 0 0 0 1 7 4 24 DAYS WITH VISIBILITY =< 2 KM 2 0 0 0 0 0 0 0 0 0 0 0 2 DURATION OF SUNSHINE HOURS 246.2 279.6 259.6 260.7 284.4 301.6 297.3 362.7 321.4 260.8 181.2 231.5 3287.0 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 797.2 796.8 794.2 796.7 798.9 796.3 793.0 796.3 799.7 801.8 800.2 798.3 797.5 MAX. QFE PRESSURE IN HPA 803.5 804.0 803.8 801.6 803.6 801.1 797.6 800.0 804.5 806.4 808.0 804.6 808.0 DAY-HOUR 11- 6 17- 6 11- 6 14- 6 12- 6 15- 6 29- 6 11- 6 19- 6 9- 6 8- 6 28- 6 MIN. QFE PRESSURE IN HPA 788.2 791.2 785.8 791.8 792.7 789.7 788.5 790.4 795.0 796.9 795.5 791.2 785.8 DAY-HOUR 17- 9 1- 0 29- 9 11- 0 5-15 30-15 16-12 5-15 2-15 23-12 13-12 10-12 MEAN QNH PRESSURE IN HPA 1019.3 1018.8 1015.6 1018.8 1021.5 1018.2 1014.2 1018.2 1022.4 1025.0 1023.0 1020.7 1019.6 MAX. QNH PRESSURE IN HPA 1027.0 1027.6 1027.4 1024.7 1027.1 1024.1 1019.8 1022.8 1028.2 1030.6 1032.5 1028.4 1032.5 DAY-HOUR 11- 6 17- 6 11- 6 14- 6 12- 6 15- 6 29- 6 11- 6 19- 6 9- 6 8- 6 28- 6 MIN. QNH PRESSURE IN HPA 1008.3 1012.0 1005.4 1012.7 1013.8 1010.2 1008.7 1011.0 1016.6 1019.0 1017.3 1012.0 1005.4 DAY-HOUR 17- 9 1- 0 29- 9 11- 0 5-15 30-15 16-12 5-15 2-15 23-12 13-12 10-12 MEAN QFF PRESSURE IN HPA 1018.8 1017.2 1011.3 1009.8 1007.9 1000.1 991.8 998.0 1006.2 1013.2 1018.2 1019.0 1009.3 MAX. QFF PRESSURE IN HPA 1032.1 1029.8 1024.9 1019.9 1017.3 1007.2 997.3 1006.3 1013.3 1018.8 1028.2 1031.1 1032.1 DAY-HOUR 19- 6 7-18 1- 3 14- 3 7- 3 1- 3 29- 3 30- 3 20- 3 29- 3 8- 6 28- 6 MIN. QFF PRESSURE IN HPA 1003.4 1006.5 999.8 1001.6 1000.7 990.8 985.8 990.1 998.6 1007.0 1010.3 1005.5 985.8 DAY-HOUR 16-12 22-21 29-15 10- 0 5- 0 30-18 12-21 5-12 2-12 23-12 19-12 10-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 797.3 796.2 793.8 796.3 798.8 796.2 792.8 796.1 799.6 801.8 800.1 798.2 797.3 MAX. QFE PRESSURE IN HPA 802.1 801.7 800.8 800.0 802.2 800.2 795.5 798.8 802.7 805.1 805.8 802.1 805.8 DAY 7 17 12 15 13 15 29 17 19 9 8 29 MIN. QFE PRESSURE IN HPA 789.1 791.2 788.6 791.8 793.7 791.9 789.4 792.5 796.9 797.3 796.8 793.3 788.6 DAY 17 1 30 11 5 30 16 6 13 24 20 10 MEAN QNH PRESSURE IN HPA 1019.4 1018.1 1015.2 1018.2 1021.3 1018.1 1014.0 1018.0 1022.3 1024.9 1022.8 1020.6 1019.4 MAX. QNH PRESSURE IN HPA 1025.3 1024.8 1023.7 1022.8 1025.4 1023.0 1017.3 1021.3 1026.0 1029.0 1029.8 1025.3 1029.8 DAY 7 17 12 15 13 15 29 17 19 9 8 29 MIN. QNH PRESSURE IN HPA 1009.4 1012.0 1008.8 1012.7 1015.1 1012.9 1009.8 1013.6 1019.0 1019.5 1018.8 1014.6 1008.8 DAY 17 1 30 11 5 30 16 6 13 24 20 10 MEAN QFF PRESSURE IN HPA 1018.0 1015.8 1010.4 1009.0 1008.1 1000.1 991.9 998.0 1005.6 1012.6 1017.4 1017.7 1008.7 MAX. QFF PRESSURE IN HPA 1028.2 1027.8 1021.6 1016.9 1016.0 1005.2 995.4 1003.5 1009.8 1016.0 1024.4 1027.5 1028.2 DAY 19 8 1 14 7 8 29 31 19 29 8 29 MIN. QFF PRESSURE IN HPA 1005.2 1007.1 1003.1 1001.6 1000.7 993.3 986.8 991.6 1000.3 1008.1 1012.2 1006.7 986.8 DAY 16 19 25 10 5 29 12 6 3 24 12 10 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 797.4 796.6 794.3 797.1 799.7 797.1 793.7 796.9 800.5 802.4 800.6 798.4 797.9 MAX. QFE PRESSURE IN HPA 802.7 802.8 801.3 800.6 803.1 800.9 796.2 799.2 803.8 805.5 807.1 802.6 807.1 DAY 7 17 11 14 12 15 29 11 19 9 8 28 MIN. QFE PRESSURE IN HPA 789.7 791.7 788.7 792.2 794.6 792.4 789.7 793.3 797.8 798.1 797.2 792.9 788.7 DAY 17 10 25 11 5 30 16 5 3 24 13 10 MEAN QNH PRESSURE IN HPA 1019.5 1018.6 1015.8 1019.2 1022.3 1019.2 1015.1 1019.0 1023.4 1025.6 1023.4 1020.8 1020.2 MAX. QNH PRESSURE IN HPA 1026.0 1026.2 1024.3 1023.5 1026.5 1023.8 1018.1 1021.8 1027.4 1029.5 1031.4 1025.9 1031.4 DAY 7 17 11 14 12 15 29 11 19 9 8 28 MIN. QNH PRESSURE IN HPA 1010.2 1012.6 1009.0 1013.2 1016.2 1013.5 1010.2 1014.6 1020.1 1020.4 1019.3 1014.1 1009.0 DAY 17 10 25 11 5 30 16 5 3 24 13 10 MEAN QFF PRESSURE IN HPA 1020.4 1018.3 1012.6 1011.3 1009.7 1002.1 993.9 1000.3 1008.7 1015.5 1019.8 1020.5 1011.1 MAX. QFF PRESSURE IN HPA 1031.5 1028.0 1024.9 1019.9 1017.3 1007.2 997.3 1006.3 1013.3 1018.8 1028.2 1029.1 1031.5 DAY 19 8 1 14 7 1 29 30 20 29 8 28 MIN. QFF PRESSURE IN HPA 1006.0 1008.0 1002.3 1004.0 1003.1 995.5 988.8 994.0 1002.8 1010.2 1013.5 1008.1 988.8 DAY 16 22 29 10 5 29 12 6 3 24 13 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ABADEH (40818) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 11 N LONGITUDE 52 40 E DATA PROCESSING CENTER ELEVATION 2030.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 798.5 798.0 795.2 798.0 800.2 797.5 794.3 797.6 801.3 803.4 801.5 799.6 798.8 MAX. QFE PRESSURE IN HPA 803.5 804.0 803.8 801.6 803.6 801.1 797.6 800.0 804.5 806.4 808.0 804.6 808.0 DAY 11 17 11 14 12 15 29 11 19 9 8 28 MIN. QFE PRESSURE IN HPA 789.8 793.7 788.1 793.0 796.3 792.8 789.9 793.6 798.4 799.8 797.8 792.7 788.1 DAY 17 10 25 11 5 30 16 5 13 24 13 14 MEAN QNH PRESSURE IN HPA 1020.9 1020.3 1016.9 1020.3 1023.0 1019.7 1015.8 1019.8 1024.4 1026.8 1024.6 1022.3 1021.2 MAX. QNH PRESSURE IN HPA 1027.0 1027.6 1027.4 1024.7 1027.1 1024.1 1019.8 1022.8 1028.2 1030.6 1032.5 1028.4 1032.5 DAY 11 17 11 14 12 15 29 11 19 9 8 28 MIN. QNH PRESSURE IN HPA 1010.3 1015.1 1008.2 1014.2 1018.2 1014.0 1010.4 1014.9 1020.8 1022.5 1020.1 1013.8 1008.2 DAY 17 10 25 11 5 30 16 5 13 24 13 14 MEAN QFF PRESSURE IN HPA 1020.9 1019.0 1012.6 1011.3 1008.9 1001.0 992.7 998.7 1007.8 1014.9 1020.0 1021.3 1010.8 MAX. QFF PRESSURE IN HPA 1032.1 1027.8 1024.2 1018.9 1015.9 1006.5 996.4 1004.9 1011.8 1018.6 1028.2 1031.1 1032.1 DAY 19 17 11 13 6 1 29 30 19 28 8 28 MIN. QFF PRESSURE IN HPA 1005.1 1009.3 1001.1 1004.8 1003.0 994.1 987.2 992.7 1001.9 1010.6 1013.7 1009.7 987.2 DAY 16 22 25 28 31 30 16 5 2 7 13 14 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 797.2 797.0 794.4 797.0 799.2 796.5 793.3 796.7 800.0 801.8 800.2 798.1 797.6 MAX. QFE PRESSURE IN HPA 802.8 802.2 802.5 800.7 802.3 799.9 796.6 799.3 803.4 805.3 806.5 803.8 806.5 DAY 11 17 11 14 12 14 28 28 20 9 8 28 MIN. QFE PRESSURE IN HPA 788.2 793.0 785.8 792.1 796.0 791.8 789.2 792.4 797.0 798.6 796.6 791.4 785.8 DAY 17 27 29 11 4 30 16 5 10 23 13 10 MEAN QNH PRESSURE IN HPA 1019.3 1019.1 1015.9 1019.1 1021.8 1018.5 1014.6 1018.7 1022.7 1025.0 1023.0 1020.4 1019.8 MAX. QNH PRESSURE IN HPA 1026.2 1025.4 1025.8 1023.6 1025.6 1022.6 1018.6 1021.9 1026.9 1029.2 1030.7 1027.4 1030.7 DAY 11 17 11 14 12 14 28 28 20 9 8 28 MIN. QNH PRESSURE IN HPA 1008.3 1014.2 1005.4 1013.1 1017.9 1012.7 1009.6 1013.5 1019.1 1021.0 1018.6 1012.3 1005.4 DAY 17 27 29 11 4 30 16 5 10 23 13 10 MEAN QFF PRESSURE IN HPA 1017.9 1016.8 1011.2 1009.5 1007.8 999.9 991.4 997.7 1005.9 1012.2 1017.4 1017.8 1008.8 MAX. QFF PRESSURE IN HPA 1029.6 1025.8 1022.2 1018.0 1015.4 1004.9 996.0 1004.0 1010.3 1015.0 1024.9 1029.8 1029.8 DAY 19 7 11 13 6 8 28 29 19 28 8 28 MIN. QFF PRESSURE IN HPA 1004.3 1008.8 1000.3 1003.4 1000.7 993.1 985.9 991.0 1000.9 1008.2 1011.9 1005.6 985.9 DAY 16 23 29 28 31 30 16 5 2 6 13 10 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 795.9 795.8 793.1 795.7 797.8 795.1 792.1 795.2 798.3 800.4 799.0 797.1 796.3 MAX. QFE PRESSURE IN HPA 800.7 800.2 800.4 799.5 800.7 798.2 794.9 798.0 801.4 803.9 805.5 803.1 805.5 DAY 11 17 11 24 12 8 28 28 20 9 8 28 MIN. QFE PRESSURE IN HPA 788.5 792.2 786.0 792.0 793.7 790.2 788.5 791.0 795.4 796.9 795.5 791.2 786.0 DAY 16 10 29 10 5 30 16 5 2 23 13 10 MEAN QNH PRESSURE IN HPA 1017.7 1017.6 1014.3 1017.5 1020.0 1016.8 1013.1 1016.9 1020.6 1023.2 1021.6 1019.2 1018.2 MAX. QNH PRESSURE IN HPA 1023.6 1023.0 1023.2 1022.1 1023.6 1020.6 1016.5 1020.3 1024.5 1027.5 1029.5 1026.5 1029.5 DAY 11 17 11 24 12 8 28 28 20 9 8 28 MIN. QNH PRESSURE IN HPA 1008.7 1013.2 1005.7 1013.0 1015.1 1010.8 1008.7 1011.8 1017.1 1019.0 1017.3 1012.0 1005.7 DAY 16 10 29 10 5 30 16 5 2 23 13 10 MEAN QFF PRESSURE IN HPA 1016.3 1015.3 1009.5 1008.3 1006.9 998.9 991.0 996.9 1004.0 1011.1 1016.2 1016.4 1007.6 MAX. QFF PRESSURE IN HPA 1027.0 1026.0 1019.0 1017