STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. 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(MDT) (C) ***** -8.6 2.3 11.7 15.5 21.4 25.5 24.7 19.0 14.6 5.8 0.7 ***** COOLING DEG. DAYS(BASE 21 0C)****** 0.0 0.0 0.0 0.9 44.6 140.6 115.0 25.7 1.5 0.0 0.0 ****** HEATING DEG. DAYS(BASE 18 0C)****** 531.3 486.4 189.7 92.9 7.5 0.0 0.0 32.8 115.1 365.8 534.8 ****** DEWPOINT (MEAN C) ***** ***** -1.7 -0.8 0.3 -1.8 1.3 1.3 -0.2 0.0 0.8 -2.5 ***** MIXING RATIO (G/KG) ****** ****** 4.28 4.59 5.04 4.28 5.38 5.42 4.72 4.83 5.14 4.01 ****** VAPOUR PRESSURE (HPA) ****** ****** 5.53 5.95 6.51 5.52 6.92 6.98 6.11 6.27 6.65 5.19 ****** SATURATION DEF. (HPA) ****** ****** 2.24 10.18 14.68 26.00 32.26 29.53 20.84 13.35 4.18 2.47 ****** RELATIVE HUMIDITY (MEAN %) *** *** 76 41 35 20 20 22 27 37 63 70 *** RELATIVE HUMIDITY (MAX. %) *** 84 88 65 51 33 32 37 40 50 76 86 *** RELATIVE HUMIDITY (MIN. %) *** 66 60 26 24 12 12 13 19 27 51 56 *** RELATIVE HUMIDITY (MEAN% 03UTC) *** 82 83 64 50 33 31 37 40 49 74 81 *** RELATIVE HUMIDITY (MEAN% 09UTC) *** 70 72 33 30 17 16 18 23 31 57 64 *** RELATIVE HUMIDITY (MEAN% 15UTC) *** 74 73 36 29 14 15 14 22 33 62 68 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. ****** 36.0 83.9 14.1 14.0 1.0 0.0 0.0 0.0 13.0 41.1 62.5 ****** DAYS WITH PRECIPITATION >=10 **** 2 4 0 1 0 0 0 0 0 2 2 **** DAYS WITH PRECIPITATION >= 5 **** 2 5 1 1 0 0 0 0 1 3 5 **** DAYS WITH PRECIPITATION >= 1 **** 7 13 5 2 1 0 0 0 4 6 7 **** DAYS WITH PRECIPITATION **** 7 14 6 4 1 0 0 0 4 8 8 **** GREATEST DAILY PRECIPITATION ****** 14.0 21.0 7.0 10.0 1.0 0.0 0.0 0.0 5.0 17.0 23.0 ****** DAY ** 19 11 30 7 7 ** ** ** 31 15 1 DAY WITH THUNDER STORM **** 0 1 0 0 1 0 0 0 0 0 0 **** DAYS WITH SNOW OR SLEET **** 7 5 0 0 0 0 0 0 0 0 1 **** DAYS WITH DUST **** 1 0 0 3 5 4 3 5 13 2 0 **** WIND DIRECTION (PREVAILING) *** *** 225 270 270 270 135 225 270 225 270 225 *** PREVAILING WIND SPEED(KNOTS) **** **** 14.7 13.3 11.3 10.0 12.1 10.9 11.8 13.6 14.9 11.2 **** PREVAILING WIND PERCENT ***** ***** 20.6 18.0 23.9 26.7 29.7 18.1 24.7 21.3 33.3 24.5 ***** CALMS PERCENT OF WIND ***** ***** 41.9 31.3 19.4 24.0 18.1 24.5 33.3 27.7 44.0 42.6 ***** NO. OF WIND OBSERVATION **** 100 155 150 155 150 155 155 150 155 150 155 1630 VECTOR WIND DIRECTION (MEAN) *** *** 233 244 256 248 163 214 245 245 249 240 *** VECTOR WIND MAGNITUDE(KNOTS) **** **** 3.3 3.5 4.8 4.3 4.2 3.0 4.2 5.6 5.9 3.9 **** WIND STEADINESES (MEAN %) ***** ***** 55.0 46.1 57.1 64.2 45.2 42.9 61.8 66.7 76.6 79.6 ***** WIND SPEED (MEAN KNOTS) **** **** 6.0 7.6 8.4 6.7 9.3 7.0 6.8 8.4 7.7 4.9 **** FASTEST WIND DIRECTION *** *** 240 240 250 270 240 70 240 280 180 240 *** FASTEST WIND SPEED (KNOTS) *** *** 35 31 31 25 21 23 27 29 31 27 *** DAY ** ** 31 13 6 9 6 18 10 2 19 8 DAYS WITH SKY CLEAR (0-2)/8 **** 9 6 9 20 29 29 24 29 24 12 13 **** DAYS WITH P.CLOUDY (3-6)/8 **** 5 10 19 11 1 2 6 1 5 11 14 **** DAYS WITH CLOUDY (7-8)/8 **** 6 13 2 0 0 0 1 0 2 7 4 **** DAYS WITH VISIBILITY =< 2 KM **** 5 13 0 0 0 0 0 0 0 2 2 **** DURATION OF SUNSHINE HOURS ****** 109.0 120.2 242.5 275.5 ****** ****** ****** ****** ****** 201.5 117.0 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1989 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 ****** 811.2 808.5 813.0 811.2 808.8 808.6 808.7 811.0 813.7 812.6 809.9 ****** MAX. QFE PRESSURE IN HPA ****** 818.2 813.8 817.0 813.1 812.1 812.0 811.9 816.3 818.1 815.7 814.0 ****** DAY ** 25 1 9 14 26 9 19 24 27 29 19 MIN. QFE PRESSURE IN HPA ****** 804.5 798.0 809.2 806.0 804.5 805.2 803.7 806.9 809.9 808.9 805.0 ****** DAY ** 14 29 24 7 10 17 1 13 31 16 5 MEAN QNH PRESSURE IN HPA ****** 1021.3 1018.0 1023.5 1021.3 1018.4 1018.1 1018.3 1021.1 1024.3 1023.0 1019.7 ****** MAX. QNH PRESSURE IN HPA ****** 1029.8 1024.5 1028.3 1023.6 1022.4 1022.3 1022.2 1027.5 1029.6 1026.8 1024.7 ****** DAY ** 25 1 9 14 26 9 19 24 27 29 19 MIN. 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QNH PRESSURE IN HPA ****** 1012.7 1004.2 1018.1 1017.7 1012.8 1013.5 1011.4 1015.7 1018.9 1018.2 1013.0 ****** DAY ** 13 29 29 7 10 5 1 13 30 15 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** 811.1 808.4 812.2 810.3 807.6 807.3 807.3 809.4 812.4 811.7 809.2 ****** MAX. QFE PRESSURE IN HPA ****** 818.0 814.0 817.0 812.4 811.1 810.2 810.4 814.3 815.8 815.0 814.6 ****** DAY ** 25 7 9 14 3 9 26 24 4 3 18 MIN. 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QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 ****** 811.2 808.3 812.4 810.0 807.3 806.9 807.1 809.6 813.0 812.0 809.6 ****** MAX. QFE PRESSURE IN HPA ****** 817.9 813.2 817.0 812.4 810.5 809.9 810.0 814.0 817.0 815.0 815.4 ****** DAY ** 25 7 9 25 3 8 26 23 4 3 18 MIN. 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QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -4.9 -4.1 3.8 10.4 18.3 24.2 26.6 26.4 23.4 14.3 10.2 1.4 12.5 MINIMUN AIR TEMPERATURE (C) -10.3 -10.0 -3.0 2.7 7.9 12.3 16.6 15.5 12.5 6.4 3.2 -4.5 4.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 4 1 0 0 0 0 5 DAYS WITH MINIMUM TEMP. <=-4 25 25 12 3 0 0 0 0 0 0 1 14 80 DAYS WITH FREEZING MIN.<= 0 31 28 23 11 0 0 0 0 0 0 8 21 122 TEMPERATURE RECORDS LOWEST(C) -26.8 -18.0 -13.0 -4.0 3.0 6.0 10.0 11.0 11.0 1.0 -4.0 -27.0 -27.0 DAY 27 1 17 5 8 1 5 9 2 15 14 28 MAXIMUM AIR TEMPERATURE (C) -0.5 0.9 8.7 15.5 23.7 29.8 32.6 33.3 29.7 19.5 15.4 6.4 17.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 16 26 30 17 0 0 0 90 DAYS WITH MAXIMUM TEMP. <= 0 17 11 2 0 0 0 0 0 0 0 0 6 36 TEMPERATURE RECORDS HIGHEST(C) 5.0 6.0 15.0 25.0 30.0 34.0 36.0 37.0 32.0 24.0 21.0 17.0 37.0 DAY 1 18 23 27 24 25 16 13 9 1 3 2 DIF. BETWEEN (MAX.-MIN.) (C) 9.8 10.9 11.7 12.8 15.8 17.5 16.0 17.8 17.2 13.1 12.2 10.9 13.8 MEAN DAILY TEMP. (MDT) (C) -5.4 -4.6 2.8 9.1 15.8 21.1 24.6 24.4 21.1 12.9 9.3 0.9 11.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 32.0 113.7 105.0 15.0 0.0 0.0 0.0 265.7 HEATING DEG. DAYS(BASE 18 0C) 725.7 632.5 470.2 268.0 83.4 2.0 0.0 0.0 0.0 157.7 260.0 530.0 3129.5 DEWPOINT (MEAN C) -8.1 -7.1 -2.3 1.8 9.3 3.0 8.1 5.3 2.2 0.6 -2.4 -7.8 0.2 MIXING RATIO (G/KG) 2.77 2.91 4.13 5.67 9.80 6.09 8.57 7.23 5.81 5.20 4.05 2.91 5.43 VAPOUR PRESSURE (HPA) 3.58 3.76 5.35 7.30 12.53 7.83 10.97 9.28 7.49 6.73 5.26 3.77 6.99 SATURATION DEF. (HPA) 0.97 0.97 3.16 6.24 9.60 23.70 25.59 27.12 22.69 10.26 7.72 4.32 11.86 RELATIVE HUMIDITY (MEAN %) 80 80 68 57 58 27 33 30 27 42 43 54 50 RELATIVE HUMIDITY (MAX. %) 87 88 81 73 68 41 49 45 38 58 58 66 63 RELATIVE HUMIDITY (MIN. %) 70 70 54 46 50 19 23 18 20 30 32 44 40 RELATIVE HUMIDITY (MEAN% 03UTC) 81 82 78 69 66 41 49 45 37 55 56 62 60 RELATIVE HUMIDITY (MEAN% 09UTC) 78 79 61 52 55 23 30 26 25 35 40 50 46 RELATIVE HUMIDITY (MEAN% 15UTC) 80 82 65 57 58 22 24 19 21 40 36 52 46 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 45.8 28.2 101.5 68.8 8.0 0.0 5.0 0.0 0.0 30.0 6.0 16.0 309.3 DAYS WITH PRECIPITATION >=10 1 0 3 3 0 0 0 0 0 1 0 0 8 DAYS WITH PRECIPITATION >= 5 4 3 8 3 1 0 0 0 0 3 1 2 25 DAYS WITH PRECIPITATION >= 1 11 6 12 10 2 0 2 0 0 4 1 3 51 DAYS WITH PRECIPITATION 14 7 13 12 2 0 2 0 0 4 1 3 58 GREATEST DAILY PRECIPITATION 11.0 7.0 27.0 29.0 7.0 0.0 3.0 0.0 0.0 16.0 6.0 8.0 29.0 DAY 8 19 14 2 12 ** 6 ** ** 29 12 26 DAY WITH THUNDER STORM 0 0 1 0 0 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 6 5 6 0 0 0 0 0 0 0 0 3 20 DAYS WITH DUST 1 1 1 7 12 4 3 4 0 4 1 0 38 WIND DIRECTION (PREVAILING) 225 225 225 270 225 225 135 225 270 225 225 270 225 PREVAILING WIND SPEED(KNOTS) 12.8 10.6 14.4 12.0 19.3 14.8 11.1 12.3 9.1 13.5 13.5 13.3 14.2 PREVAILING WIND PERCENT 23.2 12.1 16.1 27.3 23.9 19.3 23.2 20.0 24.0 21.3 16.0 21.9 18.2 CALMS PERCENT OF WIND 56.8 62.1 36.8 26.7 29.0 34.0 30.3 38.1 39.3 49.0 56.7 48.4 42.1 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 234 205 246 256 245 254 141 236 244 245 253 253 242 VECTOR WIND MAGNITUDE(KNOTS) 3.5 2.4 3.0 7.0 7.3 5.4 3.1 3.0 3.8 3.9 3.4 5.5 3.9 WIND STEADINESES (MEAN %) 79.5 70.6 42.9 69.3 70.2 66.7 50.0 47.6 71.7 67.2 75.6 82.1 60.0 WIND SPEED (MEAN KNOTS) 4.4 3.4 7.0 10.1 10.4 8.1 6.2 6.3 5.3 5.8 4.5 6.7 6.5 FASTEST WIND DIRECTION 240 170 240 240 240 240 110 220 240 210 300 310 240 FASTEST WIND SPEED (KNOTS) 27 29 31 39 49 29 21 27 27 29 31 29 49 DAY 6 19 31 15 2 15 17 15 15 25 8 17 DAYS WITH SKY CLEAR (0-2)/8 6 6 7 7 18 29 21 29 30 18 16 10 197 DAYS WITH P.CLOUDY (3-6)/8 13 9 12 17 10 1 10 2 0 10 13 13 110 DAYS WITH CLOUDY (7-8)/8 12 13 12 6 3 0 0 0 0 3 1 8 58 DAYS WITH VISIBILITY =< 2 KM 5 10 1 0 0 1 0 0 0 0 0 1 18 DURATION OF SUNSHINE HOURS ****** ****** 218.0 266.6 347.9 ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 808.9 806.8 810.5 808.1 809.6 808.2 807.3 808.2 810.4 813.4 813.8 811.2 809.7 MAX. QFE PRESSURE IN HPA 817.4 814.9 818.1 814.1 814.5 813.1 812.0 812.1 815.1 819.0 820.7 818.5 820.7 DAY-HOUR 26- 6 8- 6 10- 6 25- 6 16- 6 4- 6 15- 6 29- 6 27- 6 16- 6 23- 6 28- 6 MIN. QFE PRESSURE IN HPA 802.1 796.6 804.9 798.7 801.4 802.0 803.0 804.0 806.3 807.0 808.1 800.0 796.6 DAY-HOUR 1-12 15-12 24-12 2- 3 12-15 26-12 2- 9 8-15 4-15 14- 3 12-12 25- 3 MEAN QNH PRESSURE IN HPA 1018.6 1016.0 1020.5 1017.6 1019.4 1017.8 1016.6 1017.7 1020.3 1024.0 1024.5 1021.3 1019.5 MAX. QNH PRESSURE IN HPA 1028.8 1025.8 1029.6 1024.8 1025.3 1023.6 1022.3 1022.4 1026.0 1030.7 1032.8 1030.1 1032.8 DAY-HOUR 26- 6 8- 6 10- 6 25- 6 16- 6 4- 6 15- 6 29- 6 27- 6 16- 6 23- 6 28- 6 MIN. QNH PRESSURE IN HPA 1010.4 1003.7 1013.7 1006.3 1009.5 1010.2 1011.4 1012.7 1015.4 1016.3 1017.6 1007.8 1003.7 DAY-HOUR 1-12 15-12 24-12 2- 3 12-15 26-12 2- 9 8-15 4-15 14- 3 12-12 25- 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 808.7 806.5 810.7 808.2 809.8 808.9 808.0 808.9 810.9 813.7 813.8 811.1 809.9 MAX. QFE PRESSURE IN HPA 816.0 813.8 817.6 813.7 813.9 812.6 811.4 811.8 814.4 818.0 819.0 817.2 819.0 DAY 26 8 10 25 16 5 16 29 27 16 23 28 MIN. QFE PRESSURE IN HPA 802.7 796.9 806.3 798.7 802.2 804.0 804.6 806.2 807.7 807.0 808.2 800.0 796.9 DAY 18 10 24 2 13 27 2 7 4 14 12 25 MEAN QNH PRESSURE IN HPA 1018.3 1015.7 1020.7 1017.7 1019.6 1018.6 1017.4 1018.6 1021.0 1024.4 1024.5 1021.2 1019.8 MAX. QNH PRESSURE IN HPA 1027.1 1024.5 1029.0 1024.3 1024.6 1023.0 1021.6 1022.1 1025.2 1029.5 1030.7 1028.6 1030.7 DAY 26 8 10 25 16 5 16 29 27 16 23 28 MIN. QNH PRESSURE IN HPA 1011.1 1004.1 1015.4 1006.3 1010.5 1012.7 1013.4 1015.3 1017.1 1016.3 1017.7 1007.8 1004.1 DAY 18 10 24 2 13 27 2 7 4 14 12 25 MEAN QFF PRESSURE IN HPA 1025.7 1022.5 1021.0 1012.8 1008.5 1003.6 999.9 1001.6 1006.8 1017.0 1020.1 1023.7 1013.6 MAX. QFF PRESSURE IN HPA 1046.3 1033.8 1034.3 1020.2 1015.4 1009.8 1006.2 1006.8 1012.1 1026.8 1032.6 1052.0 1052.0 DAY 27 1 21 8 15 1 9 30 28 16 14 28 MIN. QFF PRESSURE IN HPA 1013.5 1003.1 1009.3 1000.4 997.4 995.3 995.9 996.5 1001.6 1005.6 1011.0 1009.4 995.3 DAY 4 19 24 29 12 27 28 15 10 14 12 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 809.6 807.3 811.4 808.8 810.5 809.3 808.2 809.3 811.4 814.4 814.8 812.1 810.6 MAX. QFE PRESSURE IN HPA 817.4 814.9 818.1 814.1 814.5 813.1 812.0 812.1 815.1 819.0 820.7 818.5 820.7 DAY 26 8 10 25 16 4 15 29 27 16 23 28 MIN. QFE PRESSURE IN HPA 804.0 797.6 806.1 799.8 803.2 803.9 804.6 806.4 808.2 807.5 809.2 802.0 797.6 DAY 18 19 24 2 13 26 2 8 4 14 12 25 MEAN QNH PRESSURE IN HPA 1019.4 1016.7 1021.6 1018.4 1020.4 1019.0 1017.8 1019.0 1021.6 1025.2 1025.6 1022.4 1020.6 MAX. QNH PRESSURE IN HPA 1028.8 1025.8 1029.6 1024.8 1025.3 1023.6 1022.3 1022.4 1026.0 1030.7 1032.8 1030.1 1032.8 DAY 26 8 10 25 16 4 15 29 27 16 23 28 MIN. QNH PRESSURE IN HPA 1012.7 1004.9 1015.2 1007.6 1011.7 1012.5 1013.4 1015.5 1017.7 1016.9 1018.9 1010.2 1004.9 DAY 18 19 24 2 13 26 2 8 4 14 12 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 809.3 807.2 810.8 808.3 809.8 808.4 807.6 808.4 810.6 813.6 814.1 811.4 810.0 MAX. QFE PRESSURE IN HPA 816.6 814.4 817.8 813.5 814.0 812.6 811.4 811.0 813.8 817.6 820.1 817.6 820.1 DAY 26 8 9 25 16 4 15 4 27 19 23 28 MIN. QFE PRESSURE IN HPA 803.6 797.7 805.7 800.6 802.4 803.4 803.0 805.1 807.9 808.0 808.2 801.6 797.7 DAY 24 10 14 2 12 26 2 8 4 14 12 25 MEAN QNH PRESSURE IN HPA 1019.1 1016.5 1020.8 1017.8 1019.7 1018.0 1017.0 1018.0 1020.7 1024.2 1024.8 1021.6 1019.8 MAX. QNH PRESSURE IN HPA 1027.8 1025.2 1029.3 1024.1 1024.7 1023.0 1021.6 1021.1 1024.5 1029.0 1032.1 1029.0 1032.1 DAY 26 8 9 25 16 4 15 4 27 19 23 28 MIN. QNH PRESSURE IN HPA 1012.2 1005.1 1014.7 1008.6 1010.7 1011.9 1011.4 1014.0 1017.4 1017.5 1017.7 1009.8 1005.1 DAY 24 10 14 2 12 26 2 8 4 14 12 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 808.3 806.3 809.7 807.5 809.0 807.4 806.5 807.2 809.4 812.6 813.0 810.5 808.9 MAX. QFE PRESSURE IN HPA 816.7 813.0 817.4 812.4 812.9 812.1 810.5 810.5 812.7 816.6 818.6 817.0 818.6 DAY 26 8 9 25 16 4 15 4 27 19 22 28 MIN. QFE PRESSURE IN HPA 802.1 796.6 804.9 800.9 802.3 802.0 803.0 804.1 806.5 808.0 808.1 802.3 796.6 DAY 1 15 24 1 13 26 2 8 4 1 12 24 MEAN QNH PRESSURE IN HPA 1017.8 1015.4 1019.5 1016.9 1018.7 1016.7 1015.7 1016.5 1019.2 1023.0 1023.5 1020.5 1018.6 MAX. QNH PRESSURE IN HPA 1028.0 1023.5 1028.8 1022.8 1023.4 1022.4 1020.5 1020.5 1023.1 1027.8 1030.2 1028.3 1030.2 DAY 26 8 9 25 16 4 15 4 27 19 22 28 MIN. QNH PRESSURE IN HPA 1010.4 1003.7 1013.7 1008.9 1010.6 1010.2 1011.4 1012.8 1015.7 1017.5 1017.6 1010.6 1003.7 DAY 1 15 24 1 13 26 2 8 4 1 12 24 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 808.6 806.6 810.2 807.7 808.9 807.3 806.1 807.2 809.5 812.9 813.5 810.9 809.1 MAX. QFE PRESSURE IN HPA 815.8 812.6 817.8 812.4 812.6 812.5 810.5 810.7 813.1 817.0 819.4 817.4 819.4 DAY 26 8 9 24 16 4 15 4 27 15 22 28 MIN. QFE PRESSURE IN HPA 802.5 796.7 805.1 800.5 801.4 802.0 803.0 804.0 806.3 808.9 808.7 800.9 796.7 DAY 1 15 24 1 12 26 2 8 4 1 1 24 MEAN QNH PRESSURE IN HPA 1018.2 1015.8 1020.1 1017.2 1018.6 1016.6 1015.2 1016.5 1019.3 1023.4 1024.1 1020.9 1018.8 MAX. QNH PRESSURE IN HPA 1026.9 1023.0 1029.3 1022.8 1023.0 1022.9 1020.5 1020.7 1023.6 1028.3 1031.2 1028.8 1031.2 DAY 26 8 9 24 16 4 15 4 27 15 22 28 MIN. QNH PRESSURE IN HPA 1010.8 1003.8 1014.0 1008.4 1009.5 1010.2 1011.4 1012.7 1015.4 1018.6 1018.3 1008.9 1003.8 DAY 1 15 24 1 12 26 2 8 4 1 1 24 MEAN QFF PRESSURE IN HPA 1025.7 1022.4 1020.2 1011.9 1006.7 1001.4 997.5 999.4 1005.0 1016.0 1019.8 1023.6 1012.5 MAX. QFF PRESSURE IN HPA 1044.3 1033.6 1031.2 1018.7 1011.8 1008.3 1004.1 1003.2 1010.2 1025.7 1029.6 1050.7 1050.7 DAY 26 8 20 8 16 4 8 29 27 15 14 28 MIN. QFF PRESSURE IN HPA 1010.9 1005.1 1008.4 1003.3 999.1 993.8 993.9 994.3 1000.9 1008.1 1010.6 1011.8 993.8 DAY 1 15 24 15 12 26 29 14 4 1 9 24 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 GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -4.1 -3.3 4.8 12.8 16.0 23.2 27.0 27.1 21.6 13.9 8.3 -2.6 12.1 MINIMUN AIR TEMPERATURE (C) -9.3 -9.4 -1.0 4.5 7.8 12.5 17.0 16.9 11.7 6.9 1.9 -7.1 4.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 6 1 0 0 0 0 7 DAYS WITH MINIMUM TEMP. <=-4 28 19 11 0 0 0 0 0 0 0 1 19 78 DAYS WITH FREEZING MIN.<= 0 31 28 20 5 1 0 0 0 0 0 14 24 123 TEMPERATURE RECORDS LOWEST(C) -18.0 -20.0 -10.0 -1.0 0.0 9.0 12.0 11.4 3.4 3.8 -5.8 -19.8 -20.0 DAY 1 10 10 13 6 1 8 27 27 30 27 18 MAXIMUM AIR TEMPERATURE (C) -0.1 1.0 8.7 17.5 21.0 28.7 33.1 33.2 27.6 18.6 13.3 0.8 16.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 12 30 29 12 0 0 0 83 DAYS WITH MAXIMUM TEMP. <= 0 16 14 2 0 0 0 0 0 0 0 0 14 46 TEMPERATURE RECORDS HIGHEST(C) 6.0 11.0 18.0 24.0 25.0 34.0 37.0 37.0 33.6 22.8 20.2 10.8 37.0 DAY 21 26 30 25 1 30 30 9 1 7 3 9 DIF. BETWEEN (MAX.-MIN.) (C) 9.2 10.4 9.7 13.0 13.2 16.2 16.1 16.3 15.9 11.7 11.4 7.9 12.5 MEAN DAILY TEMP. (MDT) (C) -4.7 -4.2 3.9 11.0 14.4 20.6 25.0 25.0 19.6 12.7 7.6 -3.2 10.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 24.5 119.5 127.2 17.8 0.0 0.0 0.0 289.0 HEATING DEG. DAYS(BASE 18 0C) 703.1 622.0 438.6 209.3 112.5 2.5 0.0 0.0 20.3 162.9 311.9 656.3 3239.4 DEWPOINT (MEAN C) -8.4 -7.9 -1.8 -0.1 0.8 4.8 6.4 8.5 -0.1 0.5 -1.5 -6.5 -0.4 MIXING RATIO (G/KG) 2.61 2.80 4.33 4.87 5.14 6.93 7.74 8.81 4.94 5.07 4.30 3.12 5.06 VAPOUR PRESSURE (HPA) 3.38 3.62 5.58 6.29 6.62 8.91 9.90 11.27 6.39 6.58 5.58 4.03 6.51 SATURATION DEF. (HPA) 1.33 1.59 3.66 9.31 12.37 20.85 27.43 26.49 21.12 9.88 5.91 1.48 11.78 RELATIVE HUMIDITY (MEAN %) 74 72 66 45 38 33 30 33 27 44 53 76 49 RELATIVE HUMIDITY (MAX. %) 81 82 83 68 56 50 44 48 43 64 72 86 65 RELATIVE HUMIDITY (MIN. %) 65 61 52 30 28 22 19 24 16 30 37 67 38 RELATIVE HUMIDITY (MEAN% 03UTC) 74 76 79 61 54 50 44 46 42 62 70 78 61 RELATIVE HUMIDITY (MEAN% 09UTC) 73 69 62 39 32 27 27 31 23 37 47 75 45 RELATIVE HUMIDITY (MEAN% 15UTC) 72 71 60 37 31 25 20 25 19 38 47 79 44 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 36.0 74.0 83.0 45.0 7.2 2.0 0.0 0.0 0.0 30.9 4.0 82.5 364.6 DAYS WITH PRECIPITATION >=10 2 1 4 2 0 0 0 0 0 1 0 4 14 DAYS WITH PRECIPITATION >= 5 2 5 6 2 1 0 0 0 0 3 0 6 25 DAYS WITH PRECIPITATION >= 1 6 9 13 4 2 2 0 0 0 5 2 10 53 DAYS WITH PRECIPITATION 6 9 13 4 2 2 0 0 0 8 2 15 61 GREATEST DAILY PRECIPITATION 19.0 36.0 23.0 25.0 6.0 1.0 0.0 0.0 0.0 12.0 2.0 22.0 36.0 DAY 14 27 7 4 17 22 ** ** ** 16 11 12 DAY WITH THUNDER STORM 0 0 0 2 0 0 0 0 0 2 0 1 5 DAYS WITH SNOW OR SLEET 4 4 3 0 0 0 0 0 0 0 0 6 17 DAYS WITH DUST 0 0 0 7 13 9 6 6 2 0 0 0 43 WIND DIRECTION (PREVAILING) 225 270 225 270 270 270 135 135 270 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 12.5 8.4 12.2 14.0 16.4 12.6 11.3 11.4 14.1 11.4 13.9 12.3 13.2 PREVAILING WIND PERCENT 16.8 14.3 12.3 25.3 32.9 20.7 18.1 25.8 22.7 16.1 24.0 27.7 16.2 CALMS PERCENT OF WIND 63.9 47.9 35.5 20.7 21.3 24.0 25.8 27.7 34.0 45.8 56.0 58.1 38.4 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 237 235 233 262 274 251 188 179 255 245 230 220 243 VECTOR WIND MAGNITUDE(KNOTS) 3.0 2.7 1.8 7.2 8.3 2.3 2.2 2.8 3.7 2.6 4.3 4.4 3.4 WIND STEADINESES (MEAN %) 78.9 61.4 35.3 67.9 72.2 29.9 29.7 37.3 46.2 47.3 81.1 89.8 50.0 WIND SPEED (MEAN KNOTS) 3.8 4.4 5.1 10.6 11.5 7.7 7.4 7.5 8.0 5.5 5.3 4.9 6.8 FASTEST WIND DIRECTION 230 240 220 270 220 250 150 280 250 250 240 210 220 FASTEST WIND SPEED (KNOTS) 27 31 39 35 39 27 31 21 33 23 33 27 39 DAY 27 4 7 17 2 2 22 7 19 10 1 9 DAYS WITH SKY CLEAR (0-2)/8 7 7 4 7 14 25 28 31 29 15 16 16 199 DAYS WITH P.CLOUDY (3-6)/8 9 10 11 11 12 5 3 0 1 8 10 5 85 DAYS WITH CLOUDY (7-8)/8 11 11 16 12 5 0 0 0 0 8 4 10 77 DAYS WITH VISIBILITY =< 2 KM 9 3 1 0 3 0 0 0 0 1 0 10 27 DURATION OF SUNSHINE HOURS ****** ****** ****** 250.5 320.5 358.3 372.6 ****** ****** 206.6 ****** 87.4 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 809.2 809.2 807.8 810.1 808.4 808.3 806.2 807.4 811.7 813.7 813.1 808.3 809.4 MAX. QFE PRESSURE IN HPA 816.8 817.9 814.8 815.6 813.2 813.6 810.8 811.1 815.7 817.8 817.6 815.9 817.9 DAY-HOUR 13- 6 15- 6 29- 6 19- 9 25- 6 23- 3 11- 6 9- 6 15- 6 20- 6 24- 6 17- 6 MIN. QFE PRESSURE IN HPA 797.4 802.5 796.2 802.2 802.6 801.6 801.1 803.0 806.0 809.2 807.4 797.4 796.2 DAY-HOUR 26- 3 4- 3 6-12 4- 9 22-15 11-12 13-15 11-15 3-12 15- 3 4- 9 31-15 MEAN QNH PRESSURE IN HPA 1018.9 1019.0 1017.2 1020.0 1018.0 1017.9 1015.4 1016.7 1021.9 1024.3 1023.6 1017.9 1019.2 MAX. QNH PRESSURE IN HPA 1028.1 1029.4 1025.7 1026.6 1023.7 1024.2 1020.8 1021.2 1026.8 1029.3 1029.0 1027.0 1029.4 DAY-HOUR 13- 6 15- 6 29- 6 19- 9 25- 6 23- 3 11- 6 9- 6 15- 6 20- 6 24- 6 17- 6 MIN. QNH PRESSURE IN HPA 1004.7 1010.8 1003.2 1010.5 1011.0 1009.8 1009.2 1011.4 1015.1 1018.9 1016.8 1004.7 1003.2 DAY-HOUR 26- 3 4- 3 6-12 4- 9 22-15 11-12 13-15 11-15 3-12 15- 3 4- 9 31-15 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 809.0 808.9 807.6 810.1 808.6 809.0 807.0 808.1 812.1 813.7 813.3 808.3 809.6 MAX. QFE PRESSURE IN HPA 816.1 816.1 813.1 814.4 813.1 813.6 809.9 810.5 815.2 816.8 816.2 814.8 816.8 DAY 13 15 29 19 25 23 12 8 16 20 24 17 MIN. QFE PRESSURE IN HPA 797.4 802.5 798.5 804.8 803.4 803.2 803.4 804.7 807.9 809.2 808.7 802.9 797.4 DAY 26 4 6 5 22 12 14 12 8 15 4 28 MEAN QNH PRESSURE IN HPA 1018.6 1018.6 1017.0 1020.0 1018.2 1018.6 1016.3 1017.5 1022.4 1024.4 1023.8 1017.8 1019.4 MAX. QNH PRESSURE IN HPA 1027.2 1027.2 1023.6 1025.2 1023.6 1024.2 1019.8 1020.5 1026.2 1028.1 1027.4 1025.7 1028.1 DAY 13 15 29 19 25 23 12 8 16 20 24 17 MIN. QNH PRESSURE IN HPA 1004.7 1010.8 1006.0 1013.6 1011.9 1011.7 1011.9 1013.5 1017.4 1018.9 1018.3 1011.3 1004.7 DAY 26 4 6 5 22 12 14 12 8 15 4 28 MEAN QFF PRESSURE IN HPA 1025.5 1024.8 1015.8 1013.2 1008.8 1004.2 998.7 1000.0 1009.4 1016.8 1020.7 1023.0 1013.4 MAX. QFF PRESSURE IN HPA 1038.3 1040.0 1027.7 1021.6 1020.1 1010.6 1005.2 1005.1 1018.7 1022.5 1029.7 1038.8 1040.0 DAY 12 15 11 19 25 1 12 27 27 21 27 18 MIN. QFF PRESSURE IN HPA 1011.2 1012.5 1004.8 1004.2 1001.9 996.6 993.4 995.0 1000.6 1008.5 1008.4 1010.4 993.4 DAY 26 4 6 9 22 11 23 6 19 15 4 1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 809.8 809.9 808.5 810.8 809.2 809.3 807.4 808.4 812.8 814.6 814.1 809.1 810.3 MAX. QFE PRESSURE IN HPA 816.8 817.9 814.8 815.1 813.2 813.6 810.8 811.1 815.7 817.8 817.6 815.9 817.9 DAY 13 15 29 19 25 23 11 9 15 20 24 17 MIN. QFE PRESSURE IN HPA 799.2 803.5 797.1 804.2 804.7 803.6 803.4 805.0 808.5 809.7 808.0 803.1 797.1 DAY 26 4 6 4 22 11 15 12 19 15 4 31 MEAN QNH PRESSURE IN HPA 1019.7 1019.7 1018.1 1020.9 1018.9 1019.0 1016.7 1018.0 1023.3 1025.4 1024.8 1018.8 1020.3 MAX. QNH PRESSURE IN HPA 1028.1 1029.4 1025.7 1026.0 1023.7 1024.2 1020.8 1021.2 1026.8 1029.3 1029.0 1027.0 1029.4 DAY 13 15 29 19 25 23 11 9 15 20 24 17 MIN. QNH PRESSURE IN HPA 1006.9 1012.0 1004.3 1012.9 1013.5 1012.2 1011.9 1013.9 1018.1 1019.5 1017.5 1011.6 1004.3 DAY 26 4 6 4 22 11 15 12 19 15 4 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 809.4 809.8 808.2 810.4 808.7 808.6 806.5 807.6 812.0 814.0 813.3 808.5 809.7 MAX. QFE PRESSURE IN HPA 816.2 817.9 814.3 815.6 812.5 812.8 810.0 810.2 815.0 817.2 817.0 814.9 817.9 DAY 12 15 29 19 25 23 11 9 17 27 24 17 MIN. QFE PRESSURE IN HPA 801.5 803.3 797.2 802.2 803.7 802.6 802.7 804.3 807.2 809.5 807.4 800.7 797.2 DAY 26 4 6 4 22 11 15 25 3 15 4 31 MEAN QNH PRESSURE IN HPA 1019.2 1019.6 1017.7 1020.4 1018.3 1018.2 1015.7 1017.0 1022.3 1024.7 1023.9 1018.0 1019.6 MAX. QNH PRESSURE IN HPA 1027.4 1029.4 1025.1 1026.6 1022.9 1023.3 1019.9 1020.1 1025.9 1028.6 1028.3 1025.8 1029.4 DAY 12 15 29 19 25 23 11 9 17 27 24 17 MIN. QNH PRESSURE IN HPA 1009.6 1011.8 1004.4 1010.5 1012.3 1011.0 1011.1 1013.0 1016.5 1019.3 1016.8 1008.7 1004.4 DAY 26 4 6 4 22 11 15 25 3 15 4 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 808.5 808.6 807.2 809.6 807.9 807.6 805.4 806.4 810.8 812.9 812.1 807.7 808.7 MAX. QFE PRESSURE IN HPA 815.6 817.2 812.8 814.1 811.9 812.4 808.7 809.4 813.4 816.3 815.6 813.9 817.2 DAY 12 15 29 19 8 22 11 31 15 27 24 17 MIN. QFE PRESSURE IN HPA 800.7 802.8 796.2 802.5 803.3 801.6 801.4 803.3 806.0 809.2 807.4 798.5 796.2 DAY 25 20 6 4 22 11 15 12 3 15 4 31 MEAN QNH PRESSURE IN HPA 1018.1 1018.2 1016.5 1019.4 1017.4 1017.0 1014.3 1015.6 1020.8 1023.3 1022.4 1017.1 1018.3 MAX. QNH PRESSURE IN HPA 1026.6 1028.6 1023.3 1024.8 1022.2 1022.8 1018.3 1019.2 1024.0 1027.5 1026.6 1024.6 1028.6 DAY 12 15 29 19 8 22 11 31 15 27 24 17 MIN. QNH PRESSURE IN HPA 1008.7 1011.2 1003.2 1010.8 1011.8 1009.8 1009.5 1011.8 1015.1 1018.9 1016.8 1006.0 1003.2 DAY 25 20 6 4 22 11 15 12 3 15 4 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 GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 809.1 809.1 807.4 809.7 807.7 807.3 805.0 806.3 810.9 813.1 812.5 808.2 808.9 MAX. QFE PRESSURE IN HPA 816.4 817.2 812.2 813.9 811.3 813.0 808.4 809.6 813.6 816.8 815.9 814.2 817.2 DAY 12 15 29 18 24 22 11 31 15 27 24 17 MIN. QFE PRESSURE IN HPA 800.8 802.8 796.8 803.0 802.6 801.6 801.1 803.0 806.0 809.2 807.7 797.4 796.8 DAY 25 20 6 4 22 11 13 11 3 15 30 31 MEAN QNH PRESSURE IN HPA 1018.8 1018.8 1016.7 1019.5 1017.1 1016.6 1013.8 1015.4 1021.0 1023.7 1022.9 1017.7 1018.5 MAX. QNH PRESSURE IN HPA 1027.6 1028.6 1022.5 1024.6 1021.5 1023.5 1018.0 1019.4 1024.2 1028.1 1027.0 1024.9 1028.6 DAY 12 15 29 18 24 22 11 31 15 27 24 17 MIN. QNH PRESSURE IN HPA 1008.8 1011.2 1004.0 1011.4 1011.0 1009.8 1009.2 1011.4 1015.1 1018.9 1017.1 1004.7 1004.0 DAY 25 20 6 4 22 11 13 11 3 15 30 31 MEAN QFF PRESSURE IN HPA 1025.5 1024.9 1015.3 1012.5 1007.7 1002.0 996.1 997.6 1008.2 1016.1 1019.9 1023.0 1012.4 MAX. QFF PRESSURE IN HPA 1039.0 1040.6 1026.7 1019.3 1015.7 1009.6 1002.6 1002.8 1015.4 1021.0 1027.6 1036.0 1040.6 DAY 12 14 11 18 24 22 11 31 26 20 24 18 MIN. QFF PRESSURE IN HPA 1013.2 1013.1 1003.5 1002.2 1001.7 995.0 990.9 993.7 998.8 1010.5 1009.1 1009.3 990.9 DAY 24 20 6 9 16 11 23 11 3 15 4 31 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -8.9 -4.6 -2.8 9.3 13.0 20.7 27.0 23.8 19.7 14.8 7.5 0.0 10.0 MINIMUN AIR TEMPERATURE (C) -13.5 -9.1 -7.6 2.9 6.3 11.9 17.0 14.0 10.3 5.6 1.0 -3.8 2.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 29 23 21 0 0 0 0 0 0 0 3 15 91 DAYS WITH FREEZING MIN.<= 0 31 26 29 8 1 0 0 0 0 0 8 23 126 TEMPERATURE RECORDS LOWEST(C) -25.4 -19.8 -22.6 -3.2 -0.2 8.0 11.2 7.8 3.8 1.4 -8.6 -13.6 -25.4 DAY 29 17 11 3 5 6 12 30 29 31 27 29 MAXIMUM AIR TEMPERATURE (C) -5.3 -1.3 0.6 13.7 17.7 25.4 32.6 30.0 25.0 20.1 12.0 3.0 14.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 2 27 17 0 0 0 0 46 DAYS WITH MAXIMUM TEMP. <= 0 29 19 15 0 0 0 0 0 0 0 0 9 72 TEMPERATURE RECORDS HIGHEST(C) 1.8 5.4 10.4 19.6 26.2 32.4 35.0 34.6 27.8 23.8 17.6 11.0 35.0 DAY 20 24 29 12 29 30 27 5 3 3 20 12 DIF. BETWEEN (MAX.-MIN.) (C) 8.2 7.8 8.2 10.8 11.4 13.5 15.6 16.0 14.7 14.5 11.0 6.8 11.5 MEAN DAILY TEMP. (MDT) (C) -9.4 -5.2 -3.5 8.3 12.0 18.7 24.8 22.0 17.6 12.8 6.5 -0.4 8.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 6.8 118.4 52.9 0.0 0.0 0.0 0.0 178.1 HEATING DEG. DAYS(BASE 18 0C) 848.2 672.6 666.9 291.6 189.7 18.1 0.0 5.2 27.5 160.2 345.3 569.8 3795.2 DEWPOINT (MEAN C) -13.1 -9.3 -6.8 -1.2 2.3 2.9 2.2 2.6 -3.5 -4.0 -4.0 -6.7 -3.2 MIXING RATIO (G/KG) 1.88 2.51 3.09 4.50 5.75 5.99 5.71 5.95 3.72 3.62 3.74 3.04 4.13 VAPOUR PRESSURE (HPA) 2.43 3.24 3.99 5.80 7.42 7.71 7.34 7.66 4.83 4.70 4.85 3.93 5.33 SATURATION DEF. (HPA) 0.97 1.37 1.39 6.47 8.45 17.77 29.97 23.57 19.28 12.86 6.08 2.46 10.89 RELATIVE HUMIDITY (MEAN %) 73 71 76 53 53 34 22 29 22 29 47 62 48 RELATIVE HUMIDITY (MAX. %) 82 82 86 75 76 53 34 45 33 41 62 73 62 RELATIVE HUMIDITY (MIN. %) 65 61 66 35 36 22 14 17 15 21 35 53 37 RELATIVE HUMIDITY (MEAN% 03UTC) 76 74 82 70 72 52 33 45 33 40 59 69 59 RELATIVE HUMIDITY (MEAN% 09UTC) 70 69 72 46 44 29 19 25 20 26 41 59 43 RELATIVE HUMIDITY (MEAN% 15UTC) 74 74 74 46 47 25 16 19 16 23 44 60 43 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 31.1 48.2 52.9 35.4 76.2 3.1 0.0 0.0 0.0 0.0 33.2 62.7 342.8 DAYS WITH PRECIPITATION >=10 0 2 1 0 3 0 0 0 0 0 1 2 9 DAYS WITH PRECIPITATION >= 5 2 3 4 4 6 0 0 0 0 0 2 5 26 DAYS WITH PRECIPITATION >= 1 9 7 9 7 11 1 0 0 0 0 2 10 56 DAYS WITH PRECIPITATION 12 11 13 11 16 4 0 0 0 0 8 15 90 GREATEST DAILY PRECIPITATION 7.0 19.0 15.0 9.0 19.0 2.0 0.0 0.0 0.0 0.0 23.0 22.0 23.0 DAY 21 24 31 18 6 8 ** ** ** ** 25 3 DAY WITH THUNDER STORM 0 0 0 2 7 3 0 0 0 0 0 0 12 DAYS WITH SNOW OR SLEET 7 11 8 3 0 0 0 0 0 0 1 9 39 DAYS WITH DUST 0 1 0 1 6 4 3 3 3 5 3 1 30 WIND DIRECTION (PREVAILING) 225 225 225 270 270 270 225 90 225 270 225 225 225 PREVAILING WIND SPEED(KNOTS) 13.5 15.1 13.6 13.4 13.5 12.8 10.5 9.8 12.4 12.1 17.4 11.8 13.9 PREVAILING WIND PERCENT 19.4 32.4 18.7 33.3 16.8 19.3 20.6 12.3 17.3 25.2 35.3 18.7 20.0 CALMS PERCENT OF WIND 54.8 31.0 50.3 18.0 30.3 30.7 32.3 36.8 30.7 44.5 40.7 51.0 37.7 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 222 216 238 246 248 243 198 129 232 264 227 230 232 VECTOR WIND MAGNITUDE(KNOTS) 3.9 7.3 3.7 8.2 2.9 4.3 3.7 0.9 2.6 3.7 6.9 3.7 4.1 WIND STEADINESES (MEAN %) 76.5 83.0 69.8 77.4 39.2 55.1 56.9 15.8 39.4 62.7 88.5 71.2 59.4 WIND SPEED (MEAN KNOTS) 5.1 8.8 5.3 10.6 7.4 7.8 6.5 5.7 6.6 5.9 7.8 5.2 6.9 FASTEST WIND DIRECTION 200 210 220 220 270 280 190 270 270 240 220 220 220 FASTEST WIND SPEED (KNOTS) 27 33 25 47 27 27 23 23 25 31 41 25 47 DAY 16 21 22 13 10 4 10 6 14 26 23 13 DAYS WITH SKY CLEAR (0-2)/8 15 6 9 8 6 22 26 29 28 29 14 5 197 DAYS WITH P.CLOUDY (3-6)/8 10 17 12 16 16 7 3 1 2 1 13 13 111 DAYS WITH CLOUDY (7-8)/8 6 6 10 6 9 1 2 1 0 1 3 13 58 DAYS WITH VISIBILITY =< 2 KM 4 10 9 1 4 0 0 0 0 0 1 1 30 DURATION OF SUNSHINE HOURS 118.5 136.5 153.3 224.6 220.0 303.0 330.9 317.7 314.5 289.7 158.7 99.5 2666.9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 808.0 805.6 808.0 808.1 809.7 807.9 807.1 809.2 811.8 812.9 812.3 808.9 809.1 MAX. QFE PRESSURE IN HPA 817.2 813.4 817.1 812.6 815.3 813.7 812.6 814.7 816.0 817.5 819.7 814.6 819.7 DAY-HOUR 10- 6 16- 6 12- 9 21- 6 29- 6 11- 9 6- 6 31- 6 2- 6 29- 6 4- 6 1- 6 MIN. QFE PRESSURE IN HPA 793.7 796.8 798.5 800.3 802.0 803.6 802.3 802.9 808.2 808.9 801.1 804.2 793.7 DAY-HOUR 30-12 24-12 31- 3 18- 3 4- 3 27-12 19-15 18-15 17-12 6-15 25- 3 3-12 MEAN QNH PRESSURE IN HPA 1017.5 1014.6 1017.4 1017.5 1019.5 1017.4 1016.4 1018.9 1022.1 1023.4 1022.6 1018.5 1018.8 MAX. QNH PRESSURE IN HPA 1028.6 1024.0 1028.4 1023.0 1026.3 1024.3 1023.0 1025.5 1027.1 1028.9 1031.6 1025.4 1031.6 DAY-HOUR 10- 6 16- 6 12- 9 21- 6 29- 6 11- 9 6- 6 31- 6 2- 6 29- 6 4- 6 1- 6 MIN. QNH PRESSURE IN HPA 1000.2 1004.0 1006.0 1008.2 1010.2 1012.2 1010.6 1011.3 1017.7 1018.6 1009.2 1012.9 1000.2 DAY-HOUR 30-12 24-12 31- 3 18- 3 4- 3 27-12 19-15 18-15 17-12 6-15 25- 3 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 807.7 805.3 807.6 808.1 809.9 808.3 807.8 810.0 812.1 813.1 812.2 808.7 809.2 MAX. QFE PRESSURE IN HPA 816.3 813.1 815.9 812.4 814.5 813.1 812.0 814.3 815.0 816.5 818.8 814.0 818.8 DAY 10 16 12 21 14 11 6 31 2 29 4 1 MIN. QFE PRESSURE IN HPA 799.0 799.0 798.5 800.3 802.0 805.2 804.2 804.8 809.0 810.0 801.1 805.3 798.5 DAY 31 24 31 18 4 17 20 1 18 7 25 3 MEAN QNH PRESSURE IN HPA 1017.1 1014.2 1017.0 1017.5 1019.7 1017.8 1017.2 1019.9 1022.4 1023.6 1022.5 1018.3 1018.9 MAX. QNH PRESSURE IN HPA 1027.5 1023.6 1027.0 1022.8 1025.3 1023.6 1022.3 1025.1 1025.9 1027.7 1030.5 1024.7 1030.5 DAY 10 16 12 21 14 11 6 31 2 29 4 1 MIN. QNH PRESSURE IN HPA 1006.6 1006.6 1006.0 1008.2 1010.2 1014.1 1012.9 1013.6 1018.7 1019.9 1009.2 1014.2 1006.0 DAY 31 24 31 18 4 17 20 1 18 7 25 3 MEAN QFF PRESSURE IN HPA 1028.2 1021.0 1022.9 1013.3 1012.7 1004.9 1000.0 1004.9 1011.0 1016.2 1020.1 1021.2 1014.7 MAX. QFF PRESSURE IN HPA 1047.1 1036.7 1044.9 1022.1 1020.2 1011.6 1006.1 1015.0 1017.9 1024.1 1028.2 1032.6 1047.1 DAY 10 16 12 20 2 11 12 31 30 29 18 29 MIN. QFF PRESSURE IN HPA 1011.4 1004.3 1006.5 1006.2 1003.7 998.3 995.2 995.1 1006.3 1011.5 1006.1 1013.3 995.1 DAY 1 24 30 18 4 17 20 1 17 11 25 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 808.7 806.1 808.5 808.8 810.4 808.6 808.1 810.4 812.8 814.0 813.1 809.7 809.9 MAX. QFE PRESSURE IN HPA 817.2 813.4 816.9 812.6 815.3 813.6 812.6 814.7 816.0 817.5 819.7 814.6 819.7 DAY 10 16 12 21 29 11 6 31 2 29 4 1 MIN. QFE PRESSURE IN HPA 799.0 799.3 800.0 801.7 803.2 805.6 804.5 805.1 809.9 811.0 801.3 805.3 799.0 DAY 30 24 31 18 4 27 19 1 17 7 25 3 MEAN QNH PRESSURE IN HPA 1018.3 1015.2 1018.1 1018.4 1020.4 1018.2 1017.6 1020.4 1023.3 1024.7 1023.7 1019.5 1019.8 MAX. QNH PRESSURE IN HPA 1028.6 1024.0 1028.2 1023.0 1026.3 1024.2 1023.0 1025.5 1027.1 1028.9 1031.6 1025.4 1031.6 DAY 10 16 12 21 29 11 6 31 2 29 4 1 MIN. QNH PRESSURE IN HPA 1006.6 1007.0 1007.8 1009.9 1011.7 1014.6 1013.3 1014.0 1019.8 1021.1 1009.4 1014.2 1006.6 DAY 30 24 31 18 4 27 19 1 17 7 25 3 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 808.4 806.1 808.5 808.4 809.9 808.3 807.4 809.5 812.1 813.1 812.5 809.0 809.4 MAX. QFE PRESSURE IN HPA 816.7 813.0 817.1 812.2 814.8 813.7 812.0 814.0 815.3 816.8 818.4 814.0 818.4 DAY 5 16 12 21 29 11 6 31 2 29 4 1 MIN. QFE PRESSURE IN HPA 796.7 797.4 801.2 803.0 804.0 805.1 803.7 804.9 809.2 810.6 801.7 804.4 796.7 DAY 30 24 23 18 9 27 19 1 17 7 25 3 MEAN QNH PRESSURE IN HPA 1017.9 1015.1 1018.1 1017.9 1019.8 1017.8 1016.8 1019.3 1022.4 1023.7 1022.9 1018.7 1019.2 MAX. QNH PRESSURE IN HPA 1028.0 1023.5 1028.4 1022.5 1025.7 1024.3 1022.3 1024.7 1026.3 1028.1 1030.0 1024.7 1030.0 DAY 5 16 12 21 29 11 6 31 2 29 4 1 MIN. QNH PRESSURE IN HPA 1003.8 1004.7 1009.3 1011.4 1012.7 1014.0 1012.3 1013.7 1018.9 1020.6 1009.9 1013.1 1003.8 DAY 30 24 23 18 9 27 19 1 17 7 25 3 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 807.4 805.1 807.5 807.5 809.1 807.4 806.3 808.2 811.0 812.0 811.6 808.3 808.5 MAX. QFE PRESSURE IN HPA 816.1 812.1 816.0 811.7 813.8 812.1 810.8 813.0 814.3 815.8 816.9 813.0 816.9 DAY 9 15 12 21 29 10 6 31 2 29 4 1 MIN. QFE PRESSURE IN HPA 793.7 796.8 798.8 803.8 802.4 803.6 802.5 803.5 808.2 809.0 801.6 804.2 793.7 DAY 30 24 30 18 9 27 19 18 17 6 25 3 MEAN QNH PRESSURE IN HPA 1016.8 1014.0 1016.8 1016.9 1018.8 1016.7 1015.4 1017.7 1021.1 1022.3 1021.8 1017.8 1018.0 MAX. QNH PRESSURE IN HPA 1027.2 1022.4 1027.1 1021.9 1024.5 1022.4 1020.8 1023.5 1025.1 1026.9 1028.2 1023.5 1028.2 DAY 9 15 12 21 29 10 6 31 2 29 4 1 MIN. QNH PRESSURE IN HPA 1000.2 1004.0 1006.4 1012.4 1010.7 1012.2 1010.8 1012.0 1017.7 1018.7 1009.8 1012.9 1000.2 DAY 30 24 30 18 9 27 19 18 17 6 25 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 GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 807.9 805.5 807.7 807.6 809.2 807.2 806.1 808.1 811.0 812.3 812.0 808.9 808.6 MAX. QFE PRESSURE IN HPA 816.6 813.0 816.0 811.2 813.8 812.3 810.3 812.8 814.0 816.5 817.0 813.7 817.0 DAY 9 15 12 20 29 10 6 31 2 29 17 10 MIN. QFE PRESSURE IN HPA 794.3 797.8 799.9 801.3 802.6 803.6 802.3 802.9 808.2 808.9 803.0 805.4 794.3 DAY 30 10 30 14 9 27 19 18 17 6 25 19 MEAN QNH PRESSURE IN HPA 1017.3 1014.5 1017.1 1017.0 1018.9 1016.5 1015.2 1017.6 1021.1 1022.6 1022.3 1018.5 1018.2 MAX. QNH PRESSURE IN HPA 1027.8 1023.5 1027.1 1021.3 1024.5 1022.7 1020.2 1023.3 1024.7 1027.7 1028.3 1024.3 1028.3 DAY 9 15 12 20 29 10 6 31 2 29 17 10 MIN. QNH PRESSURE IN HPA 1001.0 1005.2 1007.7 1009.4 1011.0 1012.2 1010.6 1011.3 1017.7 1018.6 1011.4 1014.3 1001.0 DAY 30 10 30 14 9 27 19 18 17 6 25 19 MEAN QFF PRESSURE IN HPA 1028.4 1021.4 1022.8 1012.7 1011.7 1003.6 997.8 1002.7 1009.7 1015.2 1019.9 1021.5 1013.9 MAX. QFF PRESSURE IN HPA 1046.4 1036.7 1043.1 1021.5 1021.0 1011.2 1003.3 1012.4 1017.0 1023.6 1026.9 1034.1 1046.4 DAY 9 16 12 19 2 1 12 31 29 29 18 28 MIN. QFF PRESSURE IN HPA 1010.6 1004.8 1006.4 1001.0 1004.0 996.5 992.2 995.1 1005.3 1010.4 1007.9 1012.0 992.2 DAY 30 24 30 14 9 27 31 1 17 5 24 13 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 GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -3.3 0.2 4.4 11.2 14.9 22.2 26.0 25.5 22.7 13.9 4.6 3.8 12.2 MINIMUN AIR TEMPERATURE (C) -7.6 -4.7 -1.4 4.9 8.2 12.3 16.4 16.0 12.8 6.5 0.3 -1.6 5.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 2 0 0 0 0 4 DAYS WITH MINIMUM TEMP. <=-4 21 15 8 0 0 0 0 0 0 0 5 4 53 DAYS WITH FREEZING MIN.<= 0 30 24 20 1 0 0 0 0 0 0 12 24 111 TEMPERATURE RECORDS LOWEST(C) -21.8 -14.6 -9.4 0.0 2.0 7.2 11.4 12.4 7.4 1.4 -10.8 -8.6 -21.8 DAY 21 16 23 13 1 22 31 23 25 7 14 13 MAXIMUM AIR TEMPERATURE (C) -0.1 3.8 8.6 15.3 18.9 27.0 31.2 30.9 28.5 18.6 8.8 8.4 16.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 6 26 26 10 0 0 0 68 DAYS WITH MAXIMUM TEMP. <= 0 15 4 0 0 0 0 0 0 0 0 0 0 19 TEMPERATURE RECORDS HIGHEST(C) 7.4 13.6 18.0 23.6 24.6 33.4 34.4 33.6 32.6 25.0 15.6 12.8 34.4 DAY 8 28 31 19 19 30 15 14 1 1 8 23 DIF. BETWEEN (MAX.-MIN.) (C) 7.5 8.5 10.0 10.4 10.7 14.7 14.8 14.9 15.7 12.1 8.5 10.0 11.5 MEAN DAILY TEMP. (MDT) (C) -3.9 -0.4 3.6 10.1 13.5 19.6 23.8 23.5 20.6 12.6 4.5 3.4 10.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 14.5 87.1 77.2 20.1 0.0 0.0 0.0 198.9 HEATING DEG. DAYS(BASE 18 0C) 678.0 515.5 445.8 238.9 139.8 15.3 0.0 0.0 6.4 169.3 404.2 452.9 3066.1 DEWPOINT (MEAN C) -9.7 -7.5 -7.0 -2.0 3.1 4.0 7.5 3.1 0.5 -1.1 -0.6 -2.4 -1.0 MIXING RATIO (G/KG) 2.38 2.81 2.94 4.23 6.04 6.38 8.26 6.02 5.02 4.44 4.72 4.03 4.77 VAPOUR PRESSURE (HPA) 3.08 3.63 3.79 5.46 7.79 8.21 10.59 7.76 6.49 5.77 6.10 5.23 6.16 SATURATION DEF. (HPA) 2.01 2.92 5.07 8.45 9.80 19.75 24.44 26.31 22.57 10.81 2.86 3.06 11.51 RELATIVE HUMIDITY (MEAN %) 63 58 47 45 48 32 32 25 24 38 72 67 46 RELATIVE HUMIDITY (MAX. %) 70 69 62 63 65 45 43 36 32 49 85 82 58 RELATIVE HUMIDITY (MIN. %) 57 47 35 32 36 25 24 18 18 30 58 50 36 RELATIVE HUMIDITY (MEAN% 03UTC) 65 66 56 61 63 45 43 35 32 46 80 80 56 RELATIVE HUMIDITY (MEAN% 09UTC) 61 54 46 38 43 29 30 22 22 33 69 64 43 RELATIVE HUMIDITY (MEAN% 15UTC) 63 55 40 42 44 26 25 19 20 37 71 62 42 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 43.1 16.5 56.4 52.4 65.7 5.0 5.4 0.0 0.0 21.4 93.2 34.8 393.9 DAYS WITH PRECIPITATION >=10 1 0 1 1 2 0 0 0 0 1 3 2 11 DAYS WITH PRECIPITATION >= 5 3 1 6 4 8 1 0 0 0 1 7 2 33 DAYS WITH PRECIPITATION >= 1 7 5 10 7 9 1 2 0 0 2 10 3 56 DAYS WITH PRECIPITATION 10 8 10 12 11 1 3 0 0 8 13 7 83 GREATEST DAILY PRECIPITATION 22.0 5.0 14.0 22.0 14.0 5.0 3.0 0.0 0.0 18.0 20.0 18.0 22.0 DAY 8 21 8 29 6 1 30 ** ** 29 26 15 DAY WITH THUNDER STORM 0 0 2 2 2 0 4 0 0 1 1 0 12 DAYS WITH SNOW OR SLEET 5 4 2 0 0 0 0 0 0 0 4 2 17 DAYS WITH DUST 1 0 0 5 5 5 0 3 3 0 0 1 23 WIND DIRECTION (PREVAILING) 225 225 225 270 270 270 135 135 270 135 225 225 225 PREVAILING WIND SPEED(KNOTS) 16.9 12.5 14.7 13.7 11.6 13.1 12.3 11.2 13.8 10.0 12.9 11.9 13.8 PREVAILING WIND PERCENT 19.4 22.9 27.1 30.7 24.5 21.3 15.5 15.5 18.0 13.5 22.7 15.5 18.2 CALMS PERCENT OF WIND 45.2 41.4 34.2 14.7 30.3 36.7 37.4 40.0 48.0 45.2 54.0 57.4 40.4 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 229 236 242 252 246 248 170 209 243 212 239 240 237 VECTOR WIND MAGNITUDE(KNOTS) 4.8 4.4 5.6 8.5 5.1 4.2 2.4 2.4 3.6 1.3 4.2 2.7 3.9 WIND STEADINESES (MEAN %) 68.6 67.7 68.3 72.0 64.6 56.0 31.6 35.8 60.0 22.4 82.4 61.4 54.9 WIND SPEED (MEAN KNOTS) 7.0 6.5 8.2 11.8 7.9 7.5 7.6 6.7 6.0 5.8 5.1 4.4 7.1 FASTEST WIND DIRECTION 230 250 210 230 210 240 230 240 290 220 210 230 230 FASTEST WIND SPEED (KNOTS) 29 23 31 35 25 25 23 23 27 23 23 25 35 DAY 28 7 8 20 2 3 3 9 24 28 2 1 DAYS WITH SKY CLEAR (0-2)/8 15 14 12 8 6 27 19 24 25 22 9 6 187 DAYS WITH P.CLOUDY (3-6)/8 10 6 13 17 18 3 12 6 5 5 10 19 124 DAYS WITH CLOUDY (7-8)/8 6 8 6 5 7 0 0 1 0 4 11 6 54 DAYS WITH VISIBILITY =< 2 KM 3 2 1 0 1 0 0 0 0 0 5 7 19 DURATION OF SUNSHINE HOURS 171.0 159.6 205.7 203.0 212.4 363.3 333.7 317.8 294.4 236.7 121.5 99.4 2718.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 808.9 808.4 807.8 809.0 810.1 808.6 808.1 809.6 810.7 814.7 811.5 812.9 810.0 MAX. QFE PRESSURE IN HPA 815.0 813.7 816.5 816.1 813.9 816.1 812.3 813.1 815.5 820.1 818.4 820.0 820.1 DAY-HOUR 6- 6 9- 9 30- 6 17- 6 28- 6 22- 6 27- 6 30- 6 16- 6 18- 6 21- 6 26- 6 MIN. QFE PRESSURE IN HPA 796.0 799.4 799.0 803.0 803.9 802.7 802.0 805.1 807.0 808.0 801.5 805.3 796.0 DAY-HOUR 8- 3 3-12 5-12 26-12 6-12 3-15 11-15 13-12 7-12 28-12 13-15 4- 9 MEAN QNH PRESSURE IN HPA 1018.6 1017.9 1017.3 1018.6 1020.0 1018.2 1017.5 1019.4 1020.7 1025.6 1021.7 1023.3 1019.9 MAX. QNH PRESSURE IN HPA 1025.9 1024.3 1027.7 1027.2 1024.6 1027.2 1022.7 1023.6 1026.5 1032.1 1030.0 1031.9 1032.1 DAY-HOUR 6- 6 9- 9 30- 6 17- 6 28- 6 22- 6 27- 6 30- 6 16- 6 18- 6 21- 6 26- 6 MIN. QNH PRESSURE IN HPA 1003.0 1007.1 1006.6 1011.4 1012.5 1011.1 1010.2 1014.0 1016.3 1017.5 1009.6 1014.2 1003.0 DAY-HOUR 8- 3 3-12 5-12 26-12 6-12 3-15 11-15 13-12 7-12 28-12 13-15 4- 9 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 808.6 808.2 807.8 809.1 810.0 809.1 808.8 810.3 811.2 815.1 811.3 812.7 810.2 MAX. QFE PRESSURE IN HPA 814.0 812.9 815.8 814.9 813.6 815.9 812.0 812.8 815.1 819.4 817.0 818.8 819.4 DAY 27 8 31 17 9 22 27 29 16 18 21 26 MIN. QFE PRESSURE IN HPA 796.0 799.6 801.0 804.1 805.2 805.3 803.8 807.0 808.5 810.5 805.6 806.3 796.0 DAY 8 3 8 26 6 3 11 13 29 28 12 4 MEAN QNH PRESSURE IN HPA 1018.2 1017.7 1017.3 1018.8 1019.8 1018.7 1018.5 1020.3 1021.3 1026.0 1021.4 1023.1 1020.1 MAX. QNH PRESSURE IN HPA 1024.7 1023.4 1026.9 1025.8 1024.2 1027.0 1022.3 1023.3 1026.0 1031.2 1028.3 1030.5 1031.2 DAY 27 8 31 17 9 22 27 29 16 18 21 26 MIN. QNH PRESSURE IN HPA 1003.0 1007.3 1009.0 1012.8 1014.1 1014.2 1012.4 1016.3 1018.1 1020.5 1014.6 1015.4 1003.0 DAY 8 3 8 26 6 3 11 13 29 28 12 4 MEAN QFF PRESSURE IN HPA 1024.1 1021.0 1017.0 1013.3 1011.2 1005.0 1001.7 1004.3 1007.7 1018.7 1020.5 1023.6 1014.0 MAX. QFF PRESSURE IN HPA 1037.6 1029.0 1030.0 1017.9 1020.6 1015.9 1005.8 1009.2 1014.5 1023.8 1031.7 1030.5 1037.6 DAY 21 6 23 15 9 22 31 29 16 18 30 26 MIN. QFF PRESSURE IN HPA 1002.5 1007.2 1004.3 1005.9 1001.7 1000.3 993.5 999.0 1003.4 1010.1 1009.2 1016.0 993.5 DAY 8 3 8 20 31 25 11 10 9 2 10 2 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 809.7 809.1 808.9 809.8 810.7 809.4 809.0 810.7 811.8 816.0 812.3 813.6 810.9 MAX. QFE PRESSURE IN HPA 815.0 813.5 816.5 816.1 813.9 816.1 812.3 813.1 815.5 820.1 818.4 820.0 820.1 DAY 6 9 30 17 28 22 27 30 16 18 21 26 MIN. QFE PRESSURE IN HPA 799.0 800.8 802.7 805.1 804.8 805.3 804.1 807.3 809.3 810.5 806.0 806.0 799.0 DAY 8 3 12 26 6 3 11 13 3 28 12 4 MEAN QNH PRESSURE IN HPA 1019.5 1018.8 1018.5 1019.6 1020.7 1019.2 1018.7 1020.7 1022.1 1027.1 1022.7 1024.2 1021.0 MAX. QNH PRESSURE IN HPA 1025.9 1024.1 1027.7 1027.2 1024.6 1027.2 1022.7 1023.6 1026.5 1032.1 1030.0 1031.9 1032.1 DAY 6 9 30 17 28 22 27 30 16 18 21 26 MIN. QNH PRESSURE IN HPA 1006.6 1008.8 1011.1 1014.0 1013.6 1014.2 1012.8 1016.6 1019.0 1020.5 1015.1 1015.1 1006.6 DAY 8 3 12 26 6 3 11 13 3 28 12 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 809.4 808.8 808.4 809.2 810.5 808.9 808.3 809.8 811.0 815.0 811.8 813.1 810.3 MAX. QFE PRESSURE IN HPA 815.0 813.7 815.9 815.8 813.5 815.5 811.6 812.5 814.3 819.3 817.7 819.4 819.4 DAY 27 9 30 17 9 22 27 30 16 17 21 26 MIN. QFE PRESSURE IN HPA 799.6 800.0 802.7 805.3 804.4 804.5 803.3 806.3 808.4 809.3 804.8 805.3 799.6 DAY 8 3 5 20 6 3 11 13 7 28 12 4 MEAN QNH PRESSURE IN HPA 1019.2 1018.5 1017.9 1019.0 1020.5 1018.5 1017.8 1019.7 1021.1 1026.0 1022.0 1023.6 1020.3 MAX. QNH PRESSURE IN HPA 1025.9 1024.3 1027.0 1026.9 1024.1 1026.5 1021.8 1022.9 1025.1 1031.1 1029.2 1031.2 1031.2 DAY 27 9 30 17 9 22 27 30 16 17 21 26 MIN. QNH PRESSURE IN HPA 1007.3 1007.8 1011.1 1014.2 1013.1 1013.3 1011.8 1015.4 1018.0 1019.0 1013.6 1014.2 1007.3 DAY 8 3 5 20 6 3 11 13 7 28 12 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 808.4 807.7 807.0 808.2 809.7 807.9 807.2 808.6 809.7 813.8 811.0 812.2 809.3 MAX. QFE PRESSURE IN HPA 813.6 812.6 814.7 814.7 813.0 814.1 810.3 811.1 813.0 818.0 816.5 818.4 818.4 DAY 27 9 30 16 18 22 27 30 19 17 21 26 MIN. QFE PRESSURE IN HPA 799.0 799.4 799.0 803.0 803.9 803.5 802.3 805.1 807.0 808.0 803.3 805.3 799.0 DAY 8 3 5 26 6 3 11 13 7 28 13 4 MEAN QNH PRESSURE IN HPA 1017.9 1017.1 1016.2 1017.8 1019.5 1017.4 1016.5 1018.2 1019.5 1024.4 1021.0 1022.6 1019.0 MAX. QNH PRESSURE IN HPA 1024.2 1023.0 1025.5 1025.5 1023.5 1024.8 1020.2 1021.2 1023.5 1029.5 1027.7 1030.0 1030.0 DAY 27 9 30 16 18 22 27 30 19 17 21 26 MIN. QNH PRESSURE IN HPA 1006.6 1007.1 1006.6 1011.4 1012.5 1012.0 1010.6 1014.0 1016.3 1017.5 1011.8 1014.2 1006.6 DAY 8 3 5 26 6 3 11 13 7 28 13 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 808.7 808.0 807.2 808.6 809.7 807.8 807.0 808.4 809.8 813.9 811.2 812.7 809.4 MAX. QFE PRESSURE IN HPA 813.2 813.2 814.1 815.1 813.2 813.9 810.5 811.1 813.0 818.1 816.8 818.8 818.8 DAY 26 9 30 16 18 22 29 30 15 17 21 26 MIN. QFE PRESSURE IN HPA 799.5 800.7 799.3 804.4 804.5 802.7 802.0 805.1 807.4 808.0 801.5 806.0 799.3 DAY 8 3 5 25 6 3 11 13 7 28 13 4 MEAN QNH PRESSURE IN HPA 1018.3 1017.5 1016.5 1018.2 1019.5 1017.2 1016.3 1018.0 1019.7 1024.6 1021.3 1023.1 1019.2 MAX. QNH PRESSURE IN HPA 1023.7 1023.7 1024.8 1026.0 1023.7 1024.6 1020.5 1021.2 1023.5 1029.6 1028.1 1030.5 1030.5 DAY 26 9 30 16 18 22 29 30 15 17 21 26 MIN. QNH PRESSURE IN HPA 1007.2 1008.7 1007.0 1013.1 1013.3 1011.1 1010.2 1014.0 1016.8 1017.5 1009.6 1015.1 1007.0 DAY 8 3 5 25 6 3 11 13 7 28 13 4 MEAN QFF PRESSURE IN HPA 1024.1 1020.6 1016.1 1012.7 1010.7 1003.1 999.3 1001.8 1006.0 1017.3 1020.4 1023.4 1013.0 MAX. QFF PRESSURE IN HPA 1036.5 1029.2 1027.7 1017.0 1017.6 1012.7 1004.5 1005.9 1012.4 1021.4 1030.3 1030.9 1036.5 DAY 19 9 23 15 8 22 30 28 30 18 29 26 MIN. QFF PRESSURE IN HPA 1004.8 1007.3 1004.9 1007.0 1003.2 997.2 991.6 997.2 1001.0 1008.1 1007.4 1016.8 991.6 DAY 8 2 5 20 31 25 11 13 1 2 10 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.2 0.7 5.2 13.1 16.4 22.5 27.0 26.7 19.6 13.2 7.2 -1.5 12.5 MINIMUN AIR TEMPERATURE (C) -3.9 -3.8 -0.3 5.9 8.4 13.3 16.9 16.0 10.6 6.2 2.4 -5.9 5.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 0 0 0 0 0 2 DAYS WITH MINIMUM TEMP. <=-4 16 12 5 0 0 0 0 0 0 0 0 18 51 DAYS WITH FREEZING MIN.<= 0 25 24 15 1 0 0 0 0 0 0 8 28 101 TEMPERATURE RECORDS LOWEST(C) -12.4 -14.0 -9.8 -2.4 1.4 6.4 12.0 11.8 7.2 1.2 -3.6 -17.0 -17.0 DAY 11 20 15 5 7 29 1 25 25 12 9 7 MAXIMUM AIR TEMPERATURE (C) 3.5 4.6 9.2 17.9 20.9 27.8 33.2 32.9 25.3 17.8 10.9 2.2 17.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 5 29 30 2 0 0 0 66 DAYS WITH MAXIMUM TEMP. <= 0 8 2 0 0 0 0 0 0 0 0 0 8 18 TEMPERATURE RECORDS HIGHEST(C) 11.4 9.0 17.2 24.2 28.6 31.0 36.0 35.2 30.8 23.0 14.6 8.6 36.0 DAY 2 27 31 22 31 11 29 5 1 1 21 28 DIF. BETWEEN (MAX.-MIN.) (C) 7.4 8.4 9.5 12.0 12.5 14.5 16.3 16.9 14.7 11.6 8.5 8.1 11.7 MEAN DAILY TEMP. (MDT) (C) -0.2 0.4 4.4 11.9 14.7 20.5 25.0 24.5 18.0 12.0 6.6 -1.8 11.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 22.5 127.8 107.9 4.5 0.0 0.0 0.0 262.7 HEATING DEG. DAYS(BASE 18 0C) 564.5 492.2 420.2 184.2 109.1 9.7 0.0 0.0 26.7 185.8 340.7 614.2 2947.3 DEWPOINT (MEAN C) -4.2 -6.7 -2.7 0.3 1.8 1.7 6.0 2.9 1.3 2.1 0.0 -8.3 -0.5 MIXING RATIO (G/KG) 3.61 2.98 4.00 4.98 5.48 5.49 7.44 6.16 5.43 5.83 4.96 2.72 4.92 VAPOUR PRESSURE (HPA) 4.67 3.85 5.17 6.43 7.07 7.06 9.52 7.91 7.03 7.56 6.41 3.53 6.35 SATURATION DEF. (HPA) 1.93 2.78 4.09 9.41 12.64 21.50 28.12 29.07 17.06 8.16 4.04 2.27 11.76 RELATIVE HUMIDITY (MEAN %) 75 60 60 45 40 29 30 25 33 53 63 62 48 RELATIVE HUMIDITY (MAX. %) 83 72 75 65 59 47 50 42 53 73 79 74 64 RELATIVE HUMIDITY (MIN. %) 65 49 45 32 28 16 18 14 21 36 50 51 35 RELATIVE HUMIDITY (MEAN% 03UTC) 78 68 71 60 57 46 50 41 53 70 74 70 62 RELATIVE HUMIDITY (MEAN% 09UTC) 73 55 55 39 32 26 24 21 25 46 58 58 43 RELATIVE HUMIDITY (MEAN% 15UTC) 75 59 57 37 34 18 19 15 27 48 63 61 43 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 74.6 60.7 71.0 43.2 22.9 18.0 0.0 0.0 2.0 48.2 224.3 13.5 578.4 DAYS WITH PRECIPITATION >=10 2 3 4 2 0 1 0 0 0 2 7 0 21 DAYS WITH PRECIPITATION >= 5 3 3 5 3 2 1 0 0 0 3 8 0 28 DAYS WITH PRECIPITATION >= 1 7 4 7 6 6 1 0 0 0 8 12 4 55 DAYS WITH PRECIPITATION 15 12 14 8 9 1 0 0 5 9 13 12 98 GREATEST DAILY PRECIPITATION 41.0 24.0 17.0 15.0 7.0 18.0 0.0 0.0 0.8 15.0 66.0 3.0 66.0 DAY 5 1 1 30 6 5 ** ** 28 19 7 16 DAY WITH THUNDER STORM 0 0 0 1 1 0 0 0 0 1 0 0 3 DAYS WITH SNOW OR SLEET 7 8 5 0 0 0 0 0 0 0 2 7 29 DAYS WITH DUST 0 0 1 2 3 2 3 4 2 0 0 3 20 WIND DIRECTION (PREVAILING) 225 225 225 270 225 225 225 225 135 270 225 225 225 PREVAILING WIND SPEED(KNOTS) 15.2 14.3 13.3 10.7 15.7 14.5 14.1 13.2 12.3 12.4 14.1 14.6 14.0 PREVAILING WIND PERCENT 18.7 30.2 30.3 21.3 18.7 16.0 16.1 15.5 15.3 11.0 30.0 31.0 19.5 CALMS PERCENT OF WIND 60.0 30.2 25.2 29.3 38.1 31.3 45.2 47.7 40.7 60.0 51.3 53.5 42.9 NO. OF WIND OBSERVATION 155 139 155 150 155 150 155 155 150 155 150 155 1824 VECTOR WIND DIRECTION (MEAN) 240 243 234 250 246 247 208 235 88 259 224 234 236 VECTOR WIND MAGNITUDE(KNOTS) 4.0 7.7 5.5 3.6 4.1 2.8 2.2 2.9 2.6 1.6 5.0 5.1 3.5 WIND STEADINESES (MEAN %) 83.3 86.5 64.7 48.0 59.4 39.4 37.9 48.3 39.4 42.1 83.3 87.9 53.8 WIND SPEED (MEAN KNOTS) 4.8 8.9 8.5 7.5 6.9 7.1 5.8 6.0 6.6 3.8 6.0 5.8 6.5 FASTEST WIND DIRECTION 240 240 230 220 230 210 210 210 30 210 220 220 230 FASTEST WIND SPEED (KNOTS) 31 29 41 29 31 27 27 23 25 21 27 27 41 DAY 4 2 7 1 4 2 31 23 1 19 21 3 DAYS WITH SKY CLEAR (0-2)/8 6 8 8 14 15 28 31 31 20 15 11 15 202 DAYS WITH P.CLOUDY (3-6)/8 12 15 17 10 15 2 0 0 10 13 11 11 116 DAYS WITH CLOUDY (7-8)/8 13 5 6 6 1 0 0 0 0 3 8 5 47 DAYS WITH VISIBILITY =< 2 KM 11 5 5 1 0 0 0 0 0 1 1 4 28 DURATION OF SUNSHINE HOURS ****** 187.0 180.9 208.0 278.3 349.8 370.0 364.6 258.2 217.0 168.4 164.4 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 810.2 807.2 808.7 810.8 810.2 806.6 805.2 806.8 813.3 814.7 810.6 810.7 809.6 MAX. QFE PRESSURE IN HPA 817.8 815.3 815.2 816.9 815.2 811.2 809.1 812.2 819.9 820.0 819.1 816.2 820.0 DAY-HOUR 10- 6 19- 6 18- 6 5- 6 18- 6 8- 6 1- 3 15- 6 23- 6 11- 6 2- 6 7- 6 MIN. QFE PRESSURE IN HPA 798.5 798.8 797.2 802.7 804.6 801.0 802.1 802.2 806.0 810.0 801.7 797.0 797.0 DAY-HOUR 16- 3 1- 3 12- 3 1-15 6- 3 28-12 30-12 1-12 1-12 16-12 25-15 3-12 MEAN QNH PRESSURE IN HPA 1020.1 1016.5 1018.3 1020.9 1020.1 1015.8 1014.0 1016.1 1023.8 1025.6 1020.5 1020.7 1019.4 MAX. QNH PRESSURE IN HPA 1029.3 1026.3 1026.2 1028.2 1026.2 1021.3 1018.8 1022.5 1031.8 1031.9 1030.9 1027.4 1031.9 DAY-HOUR 10- 6 19- 6 18- 6 5- 6 18- 6 8- 6 1- 3 15- 6 23- 6 11- 6 2- 6 7- 6 MIN. QNH PRESSURE IN HPA 1006.0 1006.4 1004.4 1011.1 1013.4 1009.0 1010.4 1010.5 1015.1 1019.9 1009.9 1004.2 1004.2 DAY-HOUR 16- 3 1- 3 12- 3 1-15 6- 3 28-12 30-12 1-12 1-12 16-12 25-15 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 809.9 806.7 808.6 810.9 810.5 807.2 806.1 807.5 813.7 814.8 810.4 810.4 809.7 MAX. QFE PRESSURE IN HPA 817.1 814.2 814.0 814.9 814.6 810.9 809.1 811.7 818.8 818.9 817.9 815.0 818.9 DAY 10 19 18 5 18 8 1 15 23 9 2 7 MIN. QFE PRESSURE IN HPA 798.5 798.8 797.2 804.1 804.6 803.4 803.0 803.0 808.5 811.3 803.0 797.8 797.2 DAY 16 1 12 2 6 3 31 2 1 16 17 4 MEAN QNH PRESSURE IN HPA 1019.8 1015.9 1018.2 1020.9 1020.5 1016.5 1015.2 1016.9 1024.3 1025.7 1020.4 1020.4 1019.5 MAX. QNH PRESSURE IN HPA 1028.4 1024.9 1024.7 1025.8 1025.4 1021.0 1018.8 1021.9 1030.5 1030.6 1029.4 1025.9 1030.6 DAY 10 19 18 5 18 8 1 15 23 9 2 7 MIN. QNH PRESSURE IN HPA 1006.0 1006.4 1004.4 1012.8 1013.4 1011.9 1011.4 1011.4 1018.1 1021.5 1011.4 1005.2 1004.4 DAY 16 1 12 2 6 3 31 2 1 16 17 4 MEAN QFF PRESSURE IN HPA 1022.4 1018.2 1017.3 1013.9 1011.0 1002.1 997.7 999.8 1012.5 1018.6 1017.6 1025.2 1013.0 MAX. QFF PRESSURE IN HPA 1036.6 1034.6 1029.2 1024.4 1017.4 1007.3 1006.4 1004.9 1021.0 1024.4 1026.8 1042.1 1042.1 DAY 10 20 18 5 18 5 1 15 23 11 10 7 MIN. QFF PRESSURE IN HPA 1002.4 1003.8 1001.3 1005.2 1004.3 994.7 993.3 993.2 1002.0 1011.9 1007.4 1008.4 993.2 DAY 16 1 7 30 28 3 31 1 1 14 17 3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 811.0 807.7 809.6 811.7 811.0 807.6 806.3 807.9 814.4 815.7 811.5 811.3 810.5 MAX. QFE PRESSURE IN HPA 817.8 815.3 815.2 816.9 815.2 811.2 809.0 812.2 819.9 820.0 819.1 816.2 820.0 DAY 10 19 18 5 18 8 2 15 23 11 2 7 MIN. QFE PRESSURE IN HPA 800.0 800.5 798.7 804.1 805.7 803.8 803.4 803.8 809.0 812.2 804.9 798.4 798.4 DAY 16 12 7 2 6 28 31 2 1 16 26 4 MEAN QNH PRESSURE IN HPA 1021.1 1017.1 1019.4 1021.9 1021.0 1017.0 1015.4 1017.3 1025.2 1026.8 1021.7 1021.4 1020.4 MAX. QNH PRESSURE IN HPA 1029.3 1026.3 1026.2 1028.2 1026.2 1021.3 1018.7 1022.5 1031.8 1031.9 1030.9 1027.4 1031.9 DAY 10 19 18 5 18 8 2 15 23 11 2 7 MIN. QNH PRESSURE IN HPA 1007.8 1008.4 1006.3 1012.8 1014.7 1012.4 1011.9 1012.4 1018.7 1022.5 1013.7 1005.9 1005.9 DAY 16 12 7 2 6 28 31 2 1 16 26 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 810.5 807.7 809.2 811.3 810.4 806.9 805.3 807.0 813.6 815.0 810.9 811.1 809.9 MAX. QFE PRESSURE IN HPA 817.7 815.1 814.7 815.9 814.8 810.7 807.9 810.7 819.2 819.1 818.5 816.2 819.2 DAY 9 19 18 5 18 8 2 15 23 11 2 7 MIN. QFE PRESSURE IN HPA 799.3 801.2 798.6 805.0 804.8 801.7 803.0 802.7 807.3 811.4 804.2 798.2 798.2 DAY 16 12 7 2 4 28 30 1 2 16 17 4 MEAN QNH PRESSURE IN HPA 1020.5 1017.1 1018.9 1021.5 1020.4 1016.2 1014.2 1016.3 1024.2 1025.9 1021.0 1021.2 1019.8 MAX. QNH PRESSURE IN HPA 1029.2 1026.0 1025.5 1027.0 1025.7 1020.7 1017.4 1020.7 1031.0 1030.9 1030.1 1027.4 1031.0 DAY 9 19 18 5 18 8 2 15 23 11 2 7 MIN. QNH PRESSURE IN HPA 1007.0 1009.3 1006.1 1013.9 1013.6 1009.9 1011.4 1011.1 1016.6 1021.6 1012.9 1005.7 1005.7 DAY 16 12 7 2 4 28 30 1 2 16 17 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 809.6 806.8 808.0 810.1 809.6 805.9 804.2 805.9 812.3 813.9 810.0 810.2 808.9 MAX. QFE PRESSURE IN HPA 817.4 813.8 813.3 814.6 813.4 809.6 806.5 809.0 818.0 817.8 817.1 815.2 818.0 DAY 9 18 18 5 18 8 1 15 23 11 2 7 MIN. QFE PRESSURE IN HPA 799.7 800.7 798.7 803.8 805.0 801.0 802.1 802.2 806.0 810.0 803.0 797.0 797.0 DAY 16 12 12 1 1 28 30 1 1 16 25 3 MEAN QNH PRESSURE IN HPA 1019.4 1016.0 1017.5 1020.0 1019.4 1015.0 1012.8 1014.9 1022.7 1024.6 1019.9 1020.1 1018.5 MAX. QNH PRESSURE IN HPA 1028.8 1024.5 1023.9 1025.4 1024.0 1019.4 1015.7 1018.7 1029.5 1029.3 1028.4 1026.2 1029.5 DAY 9 18 18 5 18 8 1 15 23 11 2 7 MIN. QNH PRESSURE IN HPA 1007.5 1008.7 1006.3 1012.4 1013.9 1009.0 1010.4 1010.5 1015.1 1019.9 1011.4 1004.2 1004.2 DAY 16 12 12 1 1 28 30 1 1 16 25 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 GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 809.9 807.2 808.2 810.1 809.5 805.7 804.0 805.9 812.4 814.2 810.0 810.6 809.0 MAX. QFE PRESSURE IN HPA 817.4 814.5 813.4 814.6 813.5 809.5 806.5 808.4 818.0 817.8 817.1 815.9 818.0 DAY 9 18 18 5 17 7 1 15 23 11 2 7 MIN. QFE PRESSURE IN HPA 801.9 800.5 799.0 802.7 805.0 801.3 802.1 802.4 806.0 810.3 801.7 797.0 797.0 DAY 16 11 11 1 1 28 30 1 1 16 25 3 MEAN QNH PRESSURE IN HPA 1019.8 1016.5 1017.8 1020.0 1019.3 1014.7 1012.7 1014.9 1022.8 1024.9 1019.9 1020.6 1018.7 MAX. QNH PRESSURE IN HPA 1028.8 1025.3 1024.0 1025.4 1024.1 1019.3 1015.7 1018.0 1029.5 1029.3 1028.4 1027.0 1029.5 DAY 9 18 18 5 17 7 1 15 23 11 2 7 MIN. QNH PRESSURE IN HPA 1010.1 1008.4 1006.6 1011.1 1013.9 1009.4 1010.4 1010.7 1015.1 1020.2 1009.9 1004.2 1004.2 DAY 16 11 11 1 1 28 30 1 1 16 25 3 MEAN QFF PRESSURE IN HPA 1022.4 1018.9 1016.6 1012.9 1009.6 1000.4 995.0 997.9 1010.9 1018.0 1017.1 1025.5 1012.1 MAX. QFF PRESSURE IN HPA 1036.9 1034.5 1027.0 1023.1 1016.1 1006.3 1002.3 1001.6 1019.9 1023.8 1026.7 1042.4 1042.4 DAY 9 19 17 5 17 5 1 25 23 11 10 7 MIN. QFF PRESSURE IN HPA 1009.3 1007.7 1006.9 1002.9 1003.8 996.7 991.7 992.5 999.9 1011.7 1009.3 1003.5 991.7 DAY 16 11 11 1 31 22 30 1 1 1 25 3 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.5 2.4 6.4 10.3 15.4 20.3 27.5 28.2 21.5 14.1 7.9 -0.0 13.0 MINIMUN AIR TEMPERATURE (C) -3.9 -2.9 -0.6 4.4 8.3 12.0 17.5 17.6 12.4 4.8 0.7 -5.9 5.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 2 0 0 0 0 4 DAYS WITH MINIMUM TEMP. <=-4 15 9 5 0 0 0 0 0 0 0 7 20 56 DAYS WITH FREEZING MIN.<= 0 27 25 17 2 0 0 0 0 0 1 14 31 117 TEMPERATURE RECORDS LOWEST(C) -10.0 -9.8 -4.8 -1.0 0.2 8.0 11.0 13.6 5.2 -0.6 -10.0 -14.6 -14.6 DAY 7 26 28 7 9 1 3 24 22 18 26 15 MAXIMUM AIR TEMPERATURE (C) 6.2 6.7 11.2 14.8 19.6 25.0 33.1 33.7 26.7 19.5 12.5 4.3 17.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 1 26 31 7 0 0 0 65 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 6 6 TEMPERATURE RECORDS HIGHEST(C) 11.0 13.6 16.4 19.8 24.8 30.2 36.6 35.8 31.6 25.4 19.2 11.2 36.6 DAY 30 21 24 30 25 21 18 1 1 2 1 31 DIF. BETWEEN (MAX.-MIN.) (C) 10.1 9.6 11.8 10.4 11.3 13.0 15.6 16.1 14.3 14.7 11.8 10.2 12.4 MEAN DAILY TEMP. (MDT) (C) 1.2 1.9 5.3 9.6 14.0 18.5 25.3 25.6 19.5 12.1 6.6 -0.8 11.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 5.5 137.1 143.6 19.2 0.0 0.0 0.0 305.4 HEATING DEG. DAYS(BASE 18 0C) 521.7 450.6 392.9 253.2 125.0 21.5 0.0 0.0 25.7 182.0 341.7 582.3 2896.6 DEWPOINT (MEAN C) -5.3 -4.6 -3.3 1.4 4.4 5.3 4.9 3.2 2.2 -3.9 -5.7 -8.2 -0.8 MIXING RATIO (G/KG) 3.27 3.47 3.87 5.42 6.63 7.07 6.90 6.07 5.68 3.67 3.35 2.61 4.83 VAPOUR PRESSURE (HPA) 4.24 4.48 4.99 6.98 8.56 9.09 8.83 7.81 7.32 4.76 4.34 3.39 6.23 SATURATION DEF. (HPA) 2.88 3.02 5.01 5.98 9.73 15.64 29.84 32.20 19.84 12.28 6.99 3.01 12.20 RELATIVE HUMIDITY (MEAN %) 63 63 54 59 52 42 26 22 31 33 41 57 45 RELATIVE HUMIDITY (MAX. %) 75 80 73 77 75 64 42 33 46 50 57 69 62 RELATIVE HUMIDITY (MIN. %) 51 47 39 42 36 27 15 14 21 21 27 45 32 RELATIVE HUMIDITY (MEAN% 03UTC) 72 77 68 74 72 64 42 33 45 50 53 67 60 RELATIVE HUMIDITY (MEAN% 09UTC) 59 58 49 51 45 35 23 19 27 26 35 53 40 RELATIVE HUMIDITY (MEAN% 15UTC) 59 57 49 53 46 33 16 15 24 26 40 55 39 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 11.4 39.1 30.1 93.2 77.9 28.7 0.3 0.0 3.0 0.0 21.9 4.3 309.9 DAYS WITH PRECIPITATION >=10 0 1 0 3 3 1 0 0 0 0 0 0 8 DAYS WITH PRECIPITATION >= 5 1 3 2 8 6 2 0 0 0 0 2 0 24 DAYS WITH PRECIPITATION >= 1 3 7 7 13 10 4 0 0 1 0 4 2 51 DAYS WITH PRECIPITATION 4 10 11 16 13 5 3 0 2 1 7 8 80 GREATEST DAILY PRECIPITATION 7.0 14.0 8.0 20.0 19.0 15.0 0.2 0.0 3.0 0.0 8.0 2.0 20.0 DAY 17 5 17 4 29 3 24 ** 21 ** 11 13 DAY WITH THUNDER STORM 0 0 0 7 7 6 1 0 1 0 1 0 23 DAYS WITH SNOW OR SLEET 1 5 2 0 0 0 0 0 0 0 1 7 16 DAYS WITH DUST 0 0 0 1 2 1 3 2 5 5 1 0 20 WIND DIRECTION (PREVAILING) 225 225 270 225 225 270 225 225 225 225 225 135 225 PREVAILING WIND SPEED(KNOTS) 11.2 12.9 12.2 14.1 14.3 13.0 10.1 14.7 13.6 13.6 13.9 10.1 13.1 PREVAILING WIND PERCENT 23.2 13.6 22.6 22.7 16.8 16.7 16.8 18.8 19.3 16.8 28.7 9.7 17.3 CALMS PERCENT OF WIND 51.0 55.0 41.9 32.7 41.3 45.3 36.8 33.8 36.7 47.7 49.3 71.0 45.2 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 154 150 155 150 155 1824 VECTOR WIND DIRECTION (MEAN) 248 241 246 235 232 271 206 199 242 239 240 207 236 VECTOR WIND MAGNITUDE(KNOTS) 4.9 2.4 4.3 5.5 2.4 2.6 2.7 3.7 3.9 2.9 5.5 1.5 3.4 WIND STEADINESES (MEAN %) 89.1 52.2 62.3 69.6 39.3 45.6 45.8 51.4 53.4 50.0 91.7 57.7 56.7 WIND SPEED (MEAN KNOTS) 5.5 4.6 6.9 7.9 6.1 5.7 5.9 7.2 7.3 5.8 6.0 2.6 6.0 FASTEST WIND DIRECTION 220 210 190 220 210 320 180 210 240 270 240 140 210 FASTEST WIND SPEED (KNOTS) 27 37 27 35 25 23 27 21 31 23 29 19 37 DAY 16 4 17 3 2 17 25 16 19 12 11 11 DAYS WITH SKY CLEAR (0-2)/8 22 11 16 7 13 22 28 29 27 24 19 16 234 DAYS WITH P.CLOUDY (3-6)/8 7 12 11 15 16 7 3 2 3 7 10 7 100 DAYS WITH CLOUDY (7-8)/8 1 5 4 8 2 1 0 0 0 0 1 8 30 DAYS WITH VISIBILITY =< 2 KM 4 4 3 2 2 0 0 0 0 0 1 4 20 DURATION OF SUNSHINE HOURS 157.8 ****** 229.4 ****** ****** 205.4 354.6 352.4 320.3 296.1 249.6 172.6 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 811.5 809.0 809.1 809.0 811.5 808.4 805.1 807.7 810.1 812.6 811.7 811.2 809.7 MAX. QFE PRESSURE IN HPA 819.3 815.2 816.8 813.4 815.7 812.5 810.1 811.2 816.5 820.7 818.0 814.7 820.7 DAY-HOUR 7- 6 1- 9 3- 6 1- 6 22- 6 2- 6 4- 3 25- 6 13- 6 25- 6 15- 6 20- 6 MIN. QFE PRESSURE IN HPA 804.8 797.5 800.2 804.0 806.0 802.9 801.1 803.5 804.8 806.2 804.0 806.7 797.5 DAY-HOUR 16-12 5- 6 17- 3 19- 3 5-12 29-12 16-12 8-15 19-15 12-12 25-12 4-12 MEAN QNH PRESSURE IN HPA 1021.6 1018.7 1018.8 1018.6 1021.7 1018.0 1014.0 1017.1 1020.0 1023.0 1021.9 1021.4 1019.6 MAX. QNH PRESSURE IN HPA 1031.1 1026.2 1028.1 1024.0 1026.8 1022.9 1020.0 1021.3 1027.7 1032.8 1029.5 1025.5 1032.8 DAY-HOUR 7- 6 1- 9 3- 6 1- 6 22- 6 2- 6 4- 3 25- 6 13- 6 25- 6 15- 6 20- 6 MIN. QNH PRESSURE IN HPA 1013.6 1004.8 1008.1 1012.7 1015.1 1011.3 1009.2 1012.0 1013.6 1015.3 1012.7 1015.9 1004.8 DAY-HOUR 16-12 5- 6 17- 3 19- 3 5-12 29-12 16-12 8-15 19-15 12-12 25-12 4-12 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 811.2 808.9 808.9 809.0 811.5 808.9 805.7 808.2 810.5 812.8 811.7 811.2 809.9 MAX. QFE PRESSURE IN HPA 818.0 814.0 815.7 813.0 815.1 811.9 810.1 811.0 815.5 819.5 817.1 813.9 819.5 DAY 7 1 3 1 23 9 4 20 13 25 16 20 MIN. QFE PRESSURE IN HPA 805.2 799.0 800.2 804.0 807.0 804.3 803.0 805.9 805.2 806.4 805.4 807.2 799.0 DAY 12 5 17 19 2 22 16 8 20 12 24 12 MEAN QNH PRESSURE IN HPA 1021.4 1018.6 1018.6 1018.7 1021.7 1018.5 1014.7 1017.7 1020.4 1023.2 1021.9 1021.3 1019.7 MAX. QNH PRESSURE IN HPA 1029.5 1024.7 1026.8 1023.5 1026.0 1022.2 1020.0 1021.1 1026.5 1031.3 1028.4 1024.6 1031.3 DAY 7 1 3 1 23 9 4 20 13 25 16 20 MIN. QNH PRESSURE IN HPA 1014.1 1006.6 1008.1 1012.7 1016.3 1013.0 1011.4 1014.9 1014.1 1015.5 1014.3 1016.5 1006.6 DAY 12 5 17 19 2 22 16 8 20 12 24 12 MEAN QFF PRESSURE IN HPA 1023.7 1020.1 1017.0 1013.6 1012.6 1005.8 997.0 1000.0 1007.3 1016.2 1019.5 1025.4 1013.2 MAX. QFF PRESSURE IN HPA 1035.6 1027.5 1026.9 1021.1 1018.4 1014.4 1004.8 1004.8 1018.3 1027.5 1029.4 1033.3 1035.6 DAY 7 12 3 7 9 1 4 25 22 26 27 20 MIN. QFF PRESSURE IN HPA 1012.4 1005.6 1003.4 1003.2 1006.0 996.6 991.5 996.0 1000.4 1004.6 1007.9 1017.7 991.5 DAY 12 5 17 19 2 22 22 9 4 12 24 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 812.3 809.7 809.9 809.7 812.3 809.2 806.0 808.7 811.2 813.8 812.6 812.1 810.6 MAX. QFE PRESSURE IN HPA 819.3 815.0 816.8 813.4 815.7 812.5 810.1 811.2 816.5 820.7 818.0 814.7 820.7 DAY 7 1 3 1 22 2 4 25 13 25 15 20 MIN. QFE PRESSURE IN HPA 806.7 797.5 803.7 806.2 808.1 804.9 802.8 806.0 805.6 807.9 806.3 807.6 797.5 DAY 11 5 26 24 2 22 16 8 20 12 24 12 MEAN QNH PRESSURE IN HPA 1022.7 1019.5 1019.7 1019.6 1022.7 1019.0 1015.1 1018.4 1021.3 1024.4 1023.0 1022.4 1020.6 MAX. QNH PRESSURE IN HPA 1031.1 1025.9 1028.1 1024.0 1026.8 1022.9 1020.0 1021.3 1027.7 1032.8 1029.5 1025.5 1032.8 DAY 7 1 3 1 22 2 4 25 13 25 15 20 MIN. QNH PRESSURE IN HPA 1015.9 1004.8 1012.3 1015.3 1017.6 1013.7 1011.2 1015.1 1014.6 1017.4 1015.4 1017.0 1004.8 DAY 11 5 26 24 2 22 16 8 20 12 24 12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 811.9 809.5 809.6 809.2 811.9 808.7 805.4 808.0 810.3 812.8 811.8 811.5 810.1 MAX. QFE PRESSURE IN HPA 818.9 815.2 816.3 813.3 815.1 812.2 809.8 810.4 815.1 819.6 818.0 814.7 819.6 DAY 7 1 3 12 26 9 4 13 13 25 15 23 MIN. QFE PRESSURE IN HPA 806.8 799.3 803.3 805.4 807.1 804.1 802.0 804.8 804.9 807.0 805.5 807.1 799.3 DAY 11 5 26 19 6 29 16 8 20 12 25 12 MEAN QNH PRESSURE IN HPA 1022.2 1019.3 1019.4 1019.0 1022.2 1018.4 1014.3 1017.5 1020.3 1023.3 1022.0 1021.7 1019.9 MAX. QNH PRESSURE IN HPA 1030.6 1026.2 1027.5 1023.9 1026.0 1022.5 1019.6 1020.4 1026.0 1031.5 1029.5 1025.5 1031.5 DAY 7 1 3 12 26 9 4 13 13 25 15 23 MIN. QNH PRESSURE IN HPA 1016.0 1007.0 1011.8 1014.3 1016.4 1012.8 1010.2 1013.6 1013.7 1016.3 1014.5 1016.4 1007.0 DAY 11 5 26 19 6 29 16 8 20 12 25 12 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 810.7 808.3 808.4 808.5 810.9 807.8 804.3 806.9 809.3 811.6 810.9 810.5 809.0 MAX. QFE PRESSURE IN HPA 817.0 814.3 814.6 813.0 814.6 811.5 808.0 809.1 814.0 818.0 817.2 813.4 818.0 DAY 7 1 3 13 28 1 3 25 12 25 15 23 MIN. QFE PRESSURE IN HPA 804.8 800.3 802.5 805.1 806.0 802.9 801.1 804.0 805.0 806.2 804.0 806.7 800.3 DAY 16 5 26 17 5 29 16 8 4 12 25 4 MEAN QNH PRESSURE IN HPA 1020.8 1017.8 1017.9 1018.0 1021.0 1017.2 1013.1 1016.1 1019.0 1021.8 1020.9 1020.5 1018.7 MAX. QNH PRESSURE IN HPA 1028.3 1025.1 1025.4 1023.5 1025.4 1021.7 1017.5 1018.8 1024.7 1029.5 1028.6 1024.0 1029.5 DAY 7 1 3 13 28 1 3 25 12 25 15 23 MIN. QNH PRESSURE IN HPA 1013.6 1008.2 1010.8 1014.0 1015.1 1011.3 1009.2 1012.7 1013.9 1015.3 1012.7 1015.9 1008.2 DAY 16 5 26 17 5 29 16 8 4 12 25 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 811.2 808.6 808.6 808.5 810.9 807.6 804.1 806.7 809.5 811.9 811.4 811.0 809.2 MAX. QFE PRESSURE IN HPA 817.1 814.3 814.2 812.4 814.3 811.0 808.0 809.1 814.0 818.3 818.0 814.6 818.3 DAY 6 1 3 12 27 1 3 25 12 25 15 23 MIN. QFE PRESSURE IN HPA 804.8 802.5 803.0 805.1 806.5 803.2 801.1 803.5 804.8 807.5 805.1 807.6 801.1 DAY 16 5 25 17 6 29 16 8 19 12 25 4 MEAN QNH PRESSURE IN HPA 1021.3 1018.2 1018.3 1018.1 1020.9 1017.0 1012.8 1015.9 1019.2 1022.2 1021.6 1021.1 1018.9 MAX. QNH PRESSURE IN HPA 1028.4 1025.1 1024.9 1022.8 1025.1 1021.1 1017.5 1018.8 1024.7 1029.9 1029.5 1025.4 1029.9 DAY 6 1 3 12 27 1 3 25 12 25 15 23 MIN. QNH PRESSURE IN HPA 1013.6 1010.8 1011.4 1014.0 1015.7 1011.7 1009.2 1012.0 1013.6 1016.9 1014.0 1017.0 1009.2 DAY 16 5 25 17 6 29 16 8 19 12 25 4 MEAN QFF PRESSURE IN HPA 1023.5 1019.6 1016.5 1013.0 1011.7 1004.2 995.0 998.1 1006.2 1015.2 1019.3 1025.1 1012.3 MAX. QFF PRESSURE IN HPA 1036.5 1026.3 1024.6 1020.0 1017.6 1011.7 1002.3 1002.6 1016.2 1026.2 1028.8 1032.3 1036.5 DAY 7 11 8 6 13 1 3 24 21 26 27 20 MIN. QFF PRESSURE IN HPA 1010.5 1010.7 1006.9 1006.0 1006.7 994.9 989.3 993.3 997.7 1005.9 1010.8 1018.4 989.3 DAY 16 4 25 19 2 29 22 8 4 3 23 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -3.8 2.0 3.6 9.6 17.8 22.7 26.3 26.5 22.2 14.5 6.9 4.7 12.8 MINIMUN AIR TEMPERATURE (C) -7.7 -2.4 -1.3 3.6 10.0 12.9 16.9 16.7 12.5 6.5 -0.5 -0.5 5.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 2 0 0 0 0 4 DAYS WITH MINIMUM TEMP. <=-4 20 9 4 0 0 0 0 0 0 0 5 4 42 DAYS WITH FREEZING MIN.<= 0 26 21 23 3 0 0 0 0 0 2 18 15 108 TEMPERATURE RECORDS LOWEST(C) -20.6 -8.8 -8.8 -2.8 5.2 7.4 9.4 12.2 7.2 -2.6 -13.0 -6.2 -20.6 DAY 25 29 17 4 12 6 15 27 10 28 13 3 MAXIMUM AIR TEMPERATURE (C) -0.4 5.9 7.6 14.2 22.3 27.8 31.3 31.6 27.5 19.5 11.6 8.3 17.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 6 27 28 5 0 0 0 66 DAYS WITH MAXIMUM TEMP. <= 0 18 0 0 0 0 0 0 0 0 0 0 0 18 TEMPERATURE RECORDS HIGHEST(C) 11.4 12.8 16.2 20.2 27.8 30.4 33.2 34.2 31.2 25.6 19.0 14.0 34.2 DAY 1 9 30 30 31 18 1 21 15 3 5 28 DIF. BETWEEN (MAX.-MIN.) (C) 7.3 8.3 8.9 10.6 12.3 14.9 14.4 14.9 15.0 13.0 12.1 8.8 11.7 MEAN DAILY TEMP. (MDT) (C) -4.0 1.8 3.1 8.9 16.2 20.4 24.1 24.1 20.0 13.0 5.6 3.9 11.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.3 17.4 97.4 97.3 11.6 0.0 0.0 0.0 224.0 HEATING DEG. DAYS(BASE 18 0C) 683.2 470.9 460.6 272.5 69.3 5.9 0.0 0.0 8.8 156.0 373.2 435.8 2936.3 DEWPOINT (MEAN C) -8.9 -2.8 -3.0 -0.9 2.4 0.3 2.3 -0.4 -2.2 -2.0 -3.5 -3.4 -1.8 MIXING RATIO (G/KG) 2.56 3.93 3.90 4.58 5.87 5.17 5.79 4.89 4.19 4.19 3.79 3.76 4.38 VAPOUR PRESSURE (HPA) 3.32 5.07 5.02 5.91 7.57 6.65 7.46 6.29 5.42 5.43 4.93 4.88 5.66 SATURATION DEF. (HPA) 1.76 2.27 3.15 6.65 13.72 22.08 27.88 29.82 22.72 12.06 5.57 3.95 12.64 RELATIVE HUMIDITY (MEAN %) 69 73 65 53 41 27 24 20 22 36 52 59 45 RELATIVE HUMIDITY (MAX. %) 77 85 84 74 63 46 40 35 40 54 70 74 62 RELATIVE HUMIDITY (MIN. %) 60 60 50 37 27 14 14 11 13 23 37 45 33 RELATIVE HUMIDITY (MEAN% 03UTC) 75 77 81 70 62 45 40 33 39 52 68 71 59 RELATIVE HUMIDITY (MEAN% 09UTC) 67 69 56 46 36 21 18 15 16 31 47 53 40 RELATIVE HUMIDITY (MEAN% 15UTC) 67 75 63 49 33 19 17 16 15 27 45 56 40 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 31.9 77.0 63.8 105.4 26.4 2.2 0.6 0.0 0.5 6.1 3.3 37.6 354.8 DAYS WITH PRECIPITATION >=10 1 2 3 3 0 0 0 0 0 0 0 1 10 DAYS WITH PRECIPITATION >= 5 2 8 5 7 2 0 0 0 0 0 0 3 27 DAYS WITH PRECIPITATION >= 1 9 11 13 14 7 0 0 0 0 2 1 7 64 DAYS WITH PRECIPITATION 16 16 16 16 9 5 2 0 2 6 4 9 101 GREATEST DAILY PRECIPITATION 12.0 14.0 11.0 25.0 9.0 0.8 0.4 0.0 0.3 2.8 2.0 13.7 25.0 DAY 6 21 2 3 13 27 4 ** 22 30 20 22 DAY WITH THUNDER STORM 0 0 1 4 3 2 1 1 0 0 0 0 12 DAYS WITH SNOW OR SLEET 12 11 7 3 0 0 0 0 0 0 0 3 36 DAYS WITH DUST 0 0 0 0 0 1 0 1 0 1 0 1 4 WIND DIRECTION (PREVAILING) 135 225 225 225 270 270 135 270 270 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 11.9 13.7 12.7 16.8 12.7 14.1 10.1 13.8 13.3 14.8 12.9 16.0 14.2 PREVAILING WIND PERCENT 12.9 19.3 29.7 29.3 20.6 18.7 23.2 11.6 27.3 21.3 6.7 21.3 16.2 CALMS PERCENT OF WIND 63.9 62.8 37.4 40.0 43.9 44.0 38.7 49.0 56.0 59.4 82.7 60.0 53.1 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 187 232 228 241 259 249 127 215 266 233 213 239 235 VECTOR WIND MAGNITUDE(KNOTS) 2.3 3.4 4.8 6.0 4.9 3.7 3.2 1.8 4.8 4.0 1.0 5.0 3.2 WIND STEADINESES (MEAN %) 54.8 73.9 65.8 70.6 70.0 54.4 52.5 30.5 85.7 74.1 52.6 87.7 55.2 WIND SPEED (MEAN KNOTS) 4.2 4.6 7.3 8.5 7.0 6.8 6.1 5.9 5.6 5.4 1.9 5.7 5.8 FASTEST WIND DIRECTION 110 220 240 230 300 220 120 280 270 260 240 210 210 FASTEST WIND SPEED (KNOTS) 25 35 31 33 23 25 19 27 25 29 19 43 43 DAY 12 9 1 12 1 2 4 23 8 27 6 29 DAYS WITH SKY CLEAR (0-2)/8 5 6 4 8 13 23 22 27 28 21 18 8 183 DAYS WITH P.CLOUDY (3-6)/8 13 13 13 13 14 6 9 4 2 8 10 17 122 DAYS WITH CLOUDY (7-8)/8 13 10 14 9 4 1 0 0 0 2 2 6 61 DAYS WITH VISIBILITY =< 2 KM 9 12 5 3 0 0 0 0 1 0 1 2 33 DURATION OF SUNSHINE HOURS 111.9 132.3 170.4 206.2 282.1 353.8 310.1 350.3 307.2 276.2 210.0 151.5 2862.0 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 809.5 807.4 805.9 809.1 810.8 808.2 808.9 809.1 809.9 812.5 814.3 812.2 809.8 MAX. QFE PRESSURE IN HPA 817.0 813.9 812.3 813.5 816.2 812.0 813.8 816.0 816.5 819.0 822.0 817.4 822.0 DAY-HOUR 26- 6 8- 6 29- 6 28- 6 18- 6 12- 6 3- 6 29- 6 25- 6 2- 3 18- 6 4- 6 MIN. QFE PRESSURE IN HPA 802.0 799.5 798.3 800.5 807.0 803.8 801.0 804.0 803.0 806.0 809.2 804.2 798.3 DAY-HOUR 19- 3 5-12 7-12 13- 3 28-15 18-15 6-15 7-12 21-15 27- 3 28-12 29-12 MEAN QNH PRESSURE IN HPA 1019.2 1016.8 1015.0 1018.8 1020.9 1017.7 1018.5 1018.7 1019.8 1022.9 1025.1 1022.5 1019.7 MAX. QNH PRESSURE IN HPA 1028.3 1024.6 1022.7 1024.1 1027.4 1022.3 1024.5 1027.1 1027.7 1030.7 1034.3 1028.8 1034.3 DAY-HOUR 26- 6 8- 6 29- 6 28- 6 18- 6 12- 6 3- 6 29- 6 25- 6 2- 3 18- 6 4- 6 MIN. QNH PRESSURE IN HPA 1010.2 1007.2 1005.8 1008.4 1016.3 1012.4 1009.0 1012.7 1011.4 1015.1 1018.9 1012.9 1005.8 DAY-HOUR 19- 3 5-12 7-12 13- 3 28-15 18-15 6-15 7-12 21-15 27- 3 28-12 29-12 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 809.1 807.2 805.8 808.9 810.9 808.9 809.4 809.5 810.2 812.7 814.4 812.1 809.9 MAX. QFE PRESSURE IN HPA 816.1 812.5 811.2 812.4 815.0 811.9 813.5 815.0 815.6 819.0 821.3 816.0 821.3 DAY 26 24 29 28 18 12 4 29 26 2 18 4 MIN. QFE PRESSURE IN HPA 802.0 799.7 800.9 800.5 807.0 804.6 804.0 805.7 803.0 806.0 810.2 807.4 799.7 DAY 19 5 13 13 29 19 7 8 22 27 7 14 MEAN QNH PRESSURE IN HPA 1018.8 1016.6 1014.8 1018.5 1021.0 1018.5 1019.2 1019.3 1020.2 1023.2 1025.1 1022.5 1019.8 MAX. QNH PRESSURE IN HPA 1027.2 1022.9 1021.3 1022.8 1025.9 1022.2 1024.1 1025.9 1026.6 1030.7 1033.5 1027.1 1033.5 DAY 26 24 29 28 18 12 4 29 26 2 18 4 MIN. QNH PRESSURE IN HPA 1010.2 1007.5 1008.9 1008.4 1016.3 1013.4 1012.7 1014.7 1011.4 1015.1 1020.1 1016.8 1007.5 DAY 19 5 13 13 29 19 7 8 22 27 7 14 MEAN QFF PRESSURE IN HPA 1025.2 1017.7 1014.9 1014.0 1010.3 1004.2 1002.3 1002.6 1006.8 1015.5 1023.7 1022.0 1013.3 MAX. QFF PRESSURE IN HPA 1042.0 1025.7 1023.4 1024.9 1016.1 1010.1 1006.7 1011.2 1016.1 1025.8 1035.2 1027.7 1042.0 DAY 26 13 29 4 5 12 9 29 25 19 18 4 MIN. QFF PRESSURE IN HPA 1009.4 1006.2 1008.0 1002.1 1004.1 997.0 995.2 996.6 998.0 1005.8 1012.4 1014.3 995.2 DAY 6 2 25 13 29 19 6 8 22 27 6 29 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 810.2 808.2 806.6 809.8 811.7 809.2 809.9 810.1 810.9 813.5 815.3 813.1 810.7 MAX. QFE PRESSURE IN HPA 817.0 813.9 812.3 813.5 816.2 812.0 813.8 816.0 816.5 819.0 822.0 817.4 822.0 DAY 26 8 29 28 18 12 3 29 25 2 18 4 MIN. QFE PRESSURE IN HPA 802.9 800.1 802.2 803.5 807.6 805.0 804.1 806.6 805.0 807.4 811.0 808.2 800.1 DAY 6 5 7 13 29 19 6 8 22 27 6 14 MEAN QNH PRESSURE IN HPA 1020.1 1017.8 1015.8 1019.7 1022.0 1018.9 1019.7 1020.0 1021.0 1024.2 1026.2 1023.6 1020.7 MAX. QNH PRESSURE IN HPA 1028.3 1024.6 1022.7 1024.1 1027.4 1022.3 1024.5 1027.1 1027.7 1030.7 1034.3 1028.8 1034.3 DAY 26 8 29 28 18 12 3 29 25 2 18 4 MIN. QNH PRESSURE IN HPA 1011.3 1007.9 1010.5 1012.0 1017.0 1013.9 1012.8 1015.8 1013.9 1016.8 1021.1 1017.7 1007.9 DAY 6 5 7 13 29 19 6 8 22 27 6 14 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 809.8 807.8 806.2 809.4 811.1 808.4 809.2 809.4 810.2 812.8 814.5 812.5 810.1 MAX. QFE PRESSURE IN HPA 816.5 813.6 811.7 812.6 815.4 811.2 813.6 814.7 816.0 817.5 821.0 816.9 821.0 DAY 26 8 29 28 18 12 3 29 25 18 18 4 MIN. QFE PRESSURE IN HPA 803.4 800.0 800.4 803.4 807.8 804.8 802.7 805.4 804.7 807.1 810.2 807.2 800.0 DAY 6 5 7 13 29 19 6 7 21 27 6 29 MEAN QNH PRESSURE IN HPA 1019.7 1017.3 1015.4 1019.2 1021.2 1017.9 1018.9 1019.1 1020.2 1023.3 1025.3 1022.9 1020.0 MAX. QNH PRESSURE IN HPA 1027.7 1024.2 1021.9 1023.0 1026.4 1021.3 1024.2 1025.5 1027.1 1028.9 1033.1 1028.2 1033.1 DAY 26 8 29 28 18 12 3 29 25 18 18 4 MIN. QNH PRESSURE IN HPA 1011.9 1007.8 1008.3 1011.9 1017.2 1013.6 1011.1 1014.3 1013.5 1016.4 1020.1 1016.5 1007.8 DAY 6 5 7 13 29 19 6 7 21 27 6 29 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 808.9 806.8 805.4 808.6 810.2 807.5 808.1 808.3 809.1 811.7 813.6 811.5 809.1 MAX. QFE PRESSURE IN HPA 815.2 812.0 810.4 812.2 815.0 809.8 813.3 813.0 814.8 817.0 819.4 815.6 819.4 DAY 26 8 29 30 18 3 3 29 25 18 18 4 MIN. QFE PRESSURE IN HPA 802.7 799.5 798.3 802.3 807.2 804.0 801.1 804.0 803.3 806.3 809.2 804.2 798.3 DAY 17 5 7 12 28 19 6 7 21 27 28 29 MEAN QNH PRESSURE IN HPA 1018.6 1016.0 1014.3 1018.2 1020.1 1016.8 1017.6 1017.9 1018.8 1021.9 1024.2 1021.7 1018.8 MAX. QNH PRESSURE IN HPA 1026.2 1022.3 1020.4 1022.5 1025.9 1019.6 1023.9 1023.5 1025.7 1028.3 1031.2 1026.6 1031.2 DAY 26 8 29 30 18 3 3 29 25 18 18 4 MIN. QNH PRESSURE IN HPA 1011.1 1007.2 1005.8 1010.6 1016.5 1012.7 1009.2 1012.7 1011.8 1015.4 1018.9 1012.9 1005.8 DAY 17 5 7 12 28 19 6 7 21 27 28 29 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 809.3 807.2 805.6 808.8 810.2 807.2 807.7 808.1 809.2 811.9 813.9 811.9 809.2 MAX. QFE PRESSURE IN HPA 815.9 812.0 811.2 812.0 814.7 809.8 812.5 812.4 814.8 817.3 820.0 816.0 820.0 DAY 25 8 29 27 18 12 3 29 25 18 18 7 MIN. QFE PRESSURE IN HPA 803.1 801.4 798.4 803.7 807.0 803.8 801.0 804.0 803.0 807.4 809.7 806.8 798.4 DAY 17 5 7 9 28 18 6 7 21 5 28 29 MEAN QNH PRESSURE IN HPA 1019.1 1016.4 1014.6 1018.4 1020.1 1016.6 1017.1 1017.6 1018.9 1022.2 1024.6 1022.1 1019.0 MAX. QNH PRESSURE IN HPA 1027.0 1022.3 1021.3 1022.3 1025.5 1019.6 1022.9 1022.8 1025.7 1028.7 1031.9 1027.1 1031.9 DAY 25 8 29 27 18 12 3 29 25 18 18 7 MIN. QNH PRESSURE IN HPA 1011.6 1009.5 1005.9 1012.3 1016.3 1012.4 1009.0 1012.7 1011.4 1016.8 1019.5 1016.0 1005.9 DAY 17 5 7 9 28 18 6 7 21 5 28 29 MEAN QFF PRESSURE IN HPA 1025.5 1017.5 1014.5 1013.8 1009.4 1002.3 1000.4 1000.8 1005.7 1014.6 1023.2 1021.6 1012.4 MAX. QFF PRESSURE IN HPA 1042.6 1024.6 1021.7 1024.8 1017.2 1008.7 1004.9 1008.6 1014.3 1025.3 1034.2 1028.5 1042.6 DAY 25 13 28 4 12 12 4 29 25 18 18 1 MIN. QFF PRESSURE IN HPA 1014.3 1006.6 1005.6 1006.5 1003.6 997.2 991.7 995.1 1000.5 1005.8 1013.2 1011.1 991.7 DAY 6 9 7 9 28 18 6 7 8 4 7 29 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 GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.3 -1.0 2.1 10.1 16.4 23.3 27.0 28.1 20.4 15.6 6.1 1.7 12.6 MINIMUN AIR TEMPERATURE (C) -4.0 -7.7 -3.0 3.1 8.2 13.5 16.3 17.1 10.9 8.0 1.7 -2.9 5.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 3 0 0 0 0 3 DAYS WITH MINIMUM TEMP. <=-4 16 19 12 4 0 0 0 0 0 0 0 9 60 DAYS WITH FREEZING MIN.<= 0 24 27 23 5 0 0 0 0 0 0 11 24 114 TEMPERATURE RECORDS LOWEST(C) -15.6 -19.5 -13.0 -9.5 1.2 8.4 12.2 12.4 4.4 2.4 -2.4 -12.6 -19.5 DAY 29 6 8 12 5 4 18 15 15 24 25 16 MAXIMUM AIR TEMPERATURE (C) 5.2 3.6 5.6 14.1 20.9 27.8 32.8 34.1 25.6 20.0 9.6 4.9 17.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 6 26 30 0 0 0 0 62 DAYS WITH MAXIMUM TEMP. <= 0 3 5 2 1 0 0 0 0 0 0 0 2 13 TEMPERATURE RECORDS HIGHEST(C) 11.8 11.4 14.4 25.4 27.8 31.6 37.6 36.2 29.0 24.2 13.8 12.0 37.6 DAY 6 18 31 25 28 29 28 18 2 6 2 8 DIF. BETWEEN (MAX.-MIN.) (C) 9.2 11.3 8.6 11.0 12.7 14.3 16.5 17.0 14.7 12.0 7.9 7.8 11.9 MEAN DAILY TEMP. (MDT) (C) 0.6 -2.0 1.3 8.6 14.5 20.7 24.5 25.6 18.2 14.0 5.7 1.0 11.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 24.8 111.3 143.1 4.0 0.0 0.0 0.0 283.2 HEATING DEG. DAYS(BASE 18 0C) 540.1 561.3 516.4 282.5 113.3 4.1 0.0 0.0 20.3 126.0 370.4 527.1 3061.6 DEWPOINT (MEAN C) -7.0 -9.3 -5.1 -2.6 0.9 -0.1 2.0 -1.1 -2.6 -0.7 0.5 -3.9 -2.4 MIXING RATIO (G/KG) 2.89 2.50 3.37 4.10 5.20 4.90 5.82 4.53 4.02 4.62 4.98 3.64 4.21 VAPOUR PRESSURE (HPA) 3.74 3.23 4.33 5.29 6.72 6.32 7.46 5.83 5.21 6.00 6.45 4.71 5.44 SATURATION DEF. (HPA) 3.34 2.84 3.14 8.17 12.84 23.37 30.18 34.16 19.91 12.47 3.21 2.43 13.00 RELATIVE HUMIDITY (MEAN %) 57 55 63 46 39 24 24 17 25 37 70 69 44 RELATIVE HUMIDITY (MAX. %) 73 69 76 67 64 44 43 32 42 52 87 83 61 RELATIVE HUMIDITY (MIN. %) 42 42 48 31 24 14 12 9 14 25 54 55 31 RELATIVE HUMIDITY (MEAN% 03UTC) 68 67 72 64 62 43 43 32 42 51 84 79 59 RELATIVE HUMIDITY (MEAN% 09UTC) 52 49 58 39 30 18 19 13 20 30 63 63 38 RELATIVE HUMIDITY (MEAN% 15UTC) 54 51 60 38 36 17 12 10 16 34 67 69 39 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 22.1 23.7 58.6 107.3 21.8 0.9 0.0 0.0 0.0 11.1 78.7 26.8 351.0 DAYS WITH PRECIPITATION >=10 1 1 1 3 0 0 0 0 0 0 3 1 10 DAYS WITH PRECIPITATION >= 5 1 2 5 6 2 0 0 0 0 1 6 3 26 DAYS WITH PRECIPITATION >= 1 1 5 12 9 5 0 0 0 0 2 8 5 47 DAYS WITH PRECIPITATION 6 10 18 14 11 5 0 0 1 5 14 7 91 GREATEST DAILY PRECIPITATION 19.0 12.0 10.0 42.0 6.0 0.6 0.0 0.0 0.0 7.0 22.0 11.2 42.0 DAY 16 19 29 5 17 7 ** ** ** 21 12 14 DAY WITH THUNDER STORM 0 0 0 3 6 1 0 0 0 0 1 0 11 DAYS WITH SNOW OR SLEET 4 6 7 4 0 0 0 0 0 0 3 5 29 DAYS WITH DUST 0 0 0 0 0 2 0 2 1 1 0 0 6 WIND DIRECTION (PREVAILING) 270 270 225 225 270 270 270 225 270 270 135 225 270 PREVAILING WIND SPEED(KNOTS) 14.2 11.4 15.8 15.0 13.9 15.2 12.5 13.3 14.4 11.2 10.0 11.3 12.9 PREVAILING WIND PERCENT 18.7 20.0 25.2 28.0 25.2 19.3 14.8 20.6 28.0 32.3 10.0 20.0 19.7 CALMS PERCENT OF WIND 56.8 54.3 47.7 36.0 41.3 48.0 60.6 49.7 45.3 45.8 67.3 57.4 50.8 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 248 241 237 246 251 244 252 215 257 260 183 244 244 VECTOR WIND MAGNITUDE(KNOTS) 4.5 4.5 5.9 7.1 5.1 4.3 2.5 4.0 5.6 5.4 1.3 3.8 4.4 WIND STEADINESES (MEAN %) 76.3 80.4 83.1 78.9 66.2 61.4 55.6 64.5 76.7 84.4 39.4 84.4 71.0 WIND SPEED (MEAN KNOTS) 5.9 5.6 7.1 9.0 7.7 7.0 4.5 6.2 7.3 6.4 3.3 4.5 6.2 FASTEST WIND DIRECTION 220 210 240 240 290 270 210 240 210 240 210 210 220 FASTEST WIND SPEED (KNOTS) 35 25 31 27 29 25 17 29 27 27 21 23 35 DAY 27 4 19 9 27 12 10 14 29 6 4 9 DAYS WITH SKY CLEAR (0-2)/8 14 17 7 8 11 21 30 25 29 18 10 11 201 DAYS WITH P.CLOUDY (3-6)/8 14 10 13 16 18 8 1 6 1 10 12 12 121 DAYS WITH CLOUDY (7-8)/8 3 1 11 6 2 1 0 0 0 3 8 8 43 DAYS WITH VISIBILITY =< 2 KM 5 3 7 2 0 0 0 0 0 1 2 1 21 DURATION OF SUNSHINE HOURS 194.6 237.3 170.0 224.9 275.6 306.0 369.9 328.7 317.8 244.7 146.6 142.5 2958.6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 808.6 808.5 805.3 808.6 810.8 808.1 805.6 807.8 811.5 813.4 812.1 810.1 809.2 MAX. QFE PRESSURE IN HPA 814.7 815.0 815.8 815.0 815.5 813.7 810.1 811.2 816.6 819.0 820.2 815.9 820.2 DAY-HOUR 12- 9 17- 6 11- 6 24- 6 16- 6 8- 6 19- 6 11- 6 19- 6 9- 6 8- 6 28- 6 MIN. QFE PRESSURE IN HPA 798.9 800.5 796.4 799.5 801.9 801.6 801.2 803.4 806.3 809.2 807.4 802.0 796.4 DAY-HOUR 31-12 5- 9 29- 9 9-15 4-12 29-15 11-12 5-12 12-12 2-12 30-15 10- 3 MEAN QNH PRESSURE IN HPA 1018.2 1018.0 1014.2 1018.2 1020.8 1017.6 1014.6 1017.2 1021.6 1024.0 1022.4 1020.0 1018.9 MAX. QNH PRESSURE IN HPA 1025.5 1025.9 1026.9 1025.9 1026.5 1024.3 1020.0 1021.3 1027.8 1030.7 1032.2 1027.0 1032.2 DAY-HOUR 12- 9 17- 6 11- 6 24- 6 16- 6 8- 6 19- 6 11- 6 19- 6 9- 6 8- 6 28- 6 MIN. QNH PRESSURE IN HPA 1006.5 1008.4 1003.5 1007.2 1010.1 1009.8 1009.3 1011.9 1015.4 1018.9 1016.8 1010.2 1003.5 DAY-HOUR 31-12 5- 9 29- 9 9-15 4-12 29-15 11-12 5-12 12-12 2-12 30-15 10- 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 808.6 808.3 805.1 808.6 811.0 808.4 806.3 808.3 811.8 813.5 812.0 809.9 809.3 MAX. QFE PRESSURE IN HPA 814.0 814.4 814.4 814.3 815.0 812.5 809.4 810.7 815.9 817.7 819.2 814.9 819.2 DAY 12 17 11 24 16 8 26 11 19 9 8 28 MIN. QFE PRESSURE IN HPA 799.1 802.0 797.6 800.2 804.2 802.5 803.5 804.8 807.9 810.6 809.8 802.0 797.6 DAY 16 5 7 11 4 30 11 5 3 6 20 10 MEAN QNH PRESSURE IN HPA 1018.2 1017.8 1013.9 1018.2 1021.1 1018.0 1015.5 1017.9 1022.1 1024.0 1022.4 1019.7 1019.1 MAX. QNH PRESSURE IN HPA 1024.7 1025.2 1025.2 1025.1 1025.9 1022.9 1019.2 1020.7 1027.0 1029.2 1031.0 1025.8 1031.0 DAY 12 17 11 24 16 8 26 11 19 9 8 28 MIN. QNH PRESSURE IN HPA 1006.7 1010.2 1004.9 1008.1 1012.9 1010.8 1012.0 1013.6 1017.4 1020.6 1019.6 1010.2 1004.9 DAY 16 5 7 11 4 30 11 5 3 6 20 10 MEAN QFF PRESSURE IN HPA 1020.6 1022.7 1015.2 1013.4 1011.9 1003.6 998.0 1000.1 1010.0 1015.5 1020.3 1021.7 1012.7 MAX. QFF PRESSURE IN HPA 1031.0 1035.0 1028.1 1025.9 1019.9 1009.9 1002.8 1003.4 1018.5 1021.0 1029.5 1033.9 1035.0 DAY 29 7 11 12 12 8 8 16 15 29 8 28 MIN. QFF PRESSURE IN HPA 1006.7 1011.2 1003.9 1006.1 1002.6 994.4 993.3 995.3 1001.5 1008.3 1014.1 1008.8 993.3 DAY 16 22 7 28 4 30 11 6 2 6 5 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 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 809.3 809.2 806.0 809.3 811.5 808.9 806.7 808.8 812.5 814.4 813.1 810.8 810.0 MAX. QFE PRESSURE IN HPA 814.6 815.0 815.8 815.0 815.5 813.7 810.1 811.2 816.6 819.0 820.2 815.9 820.2 DAY 12 17 11 24 16 8 19 11 19 9 8 28 MIN. QFE PRESSURE IN HPA 799.8 801.8 797.2 801.4 804.0 803.3 803.1 805.0 808.6 811.0 810.9 803.3 797.2 DAY 16 5 29 10 4 30 11 5 3 6 19 10 MEAN QNH PRESSURE IN HPA 1019.0 1018.9 1015.0 1019.1 1021.7 1018.5 1015.9 1018.5 1022.8 1025.2 1023.6 1020.8 1019.9 MAX. QNH PRESSURE IN HPA 1025.4 1025.9 1026.9 1025.9 1026.5 1024.3 1020.0 1021.3 1027.8 1030.7 1032.2 1027.0 1032.2 DAY 12 17 11 24 16 8 19 11 19 9 8 28 MIN. QNH PRESSURE IN HPA 1007.6 1010.0 1004.4 1009.5 1012.7 1011.8 1011.6 1013.9 1018.2 1021.1 1021.0 1011.8 1004.4 DAY 16 5 29 10 4 30 11 5 3 6 19 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 808.8 808.9 805.6 808.9 811.0 808.4 805.8 808.0 811.8 813.8 812.4 810.2 809.5 MAX. QFE PRESSURE IN HPA 814.7 814.6 814.8 814.7 814.9 813.2 809.4 810.5 815.9 818.6 819.4 815.4 819.4 DAY 12 7 11 23 12 8 26 10 19 9 8 28 MIN. QFE PRESSURE IN HPA 799.0 800.5 796.4 801.2 803.0 802.7 802.2 804.4 807.8 810.1 810.1 802.4 796.4 DAY 31 5 29 5 4 30 11 5 3 6 25 9 MEAN QNH PRESSURE IN HPA 1018.5 1018.5 1014.6 1018.6 1021.1 1018.0 1014.8 1017.4 1022.1 1024.4 1022.8 1020.1 1019.2 MAX. QNH PRESSURE IN HPA 1025.5 1025.4 1025.7 1025.5 1025.8 1023.7 1019.2 1020.5 1027.0 1030.2 1031.2 1026.4 1031.2 DAY 12 7 11 23 12 8 26 10 19 9 8 28 MIN. QNH PRESSURE IN HPA 1006.6 1008.4 1003.5 1009.3 1011.4 1011.1 1010.5 1013.1 1017.2 1020.0 1020.0 1010.7 1003.5 DAY 31 5 29 5 4 30 11 5 3 6 25 9 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 807.8 807.8 804.8 808.0 810.2 807.5 804.8 806.8 810.6 812.7 811.3 809.5 808.5 MAX. QFE PRESSURE IN HPA 813.9 813.4 813.6 813.4 813.8 812.5 808.2 809.4 814.2 817.4 818.4 814.2 818.4 DAY 12 7 11 23 12 8 26 10 19 9 8 28 MIN. QFE PRESSURE IN HPA 798.9 801.2 796.4 800.2 801.9 802.0 801.2 803.4 806.3 809.2 808.8 802.4 796.4 DAY 31 5 29 9 4 30 11 5 12 2 30 9 MEAN QNH PRESSURE IN HPA 1017.3 1017.2 1013.6 1017.5 1020.1 1016.9 1013.6 1016.1 1020.6 1023.1 1021.5 1019.2 1018.1 MAX. QNH PRESSURE IN HPA 1024.6 1024.0 1024.2 1024.0 1024.5 1022.9 1017.7 1019.2 1024.9 1028.8 1030.0 1024.9 1030.0 DAY 12 7 11 23 12 8 26 10 19 9 8 28 MIN. QNH PRESSURE IN HPA 1006.5 1009.3 1003.5 1008.1 1010.1 1010.2 1009.3 1011.9 1015.4 1018.9 1018.4 1010.7 1003.5 DAY 31 5 29 9 4 30 11 5 12 2 30 9 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 808.3 808.2 804.9 808.1 810.3 807.2 804.5 806.9 810.6 812.9 811.7 810.1 808.6 MAX. QFE PRESSURE IN HPA 814.2 813.4 813.9 813.2 815.2 811.9 807.8 809.2 813.8 817.2 818.0 814.2 818.0 DAY 12 7 11 13 12 8 26 10 18 8 8 28 MIN. QFE PRESSURE IN HPA 800.0 803.3 797.3 799.5 801.9 801.6 801.2 803.4 806.7 809.8 807.4 803.0 797.3 DAY 15 26 29 9 4 29 11 5 12 2 30 9 MEAN QNH PRESSURE IN HPA 1017.9 1017.7 1013.8 1017.6 1020.2 1016.6 1013.3 1016.1 1020.7 1023.4 1021.9 1019.9 1018.3 MAX. QNH PRESSURE IN HPA 1024.9 1024.0 1024.6 1023.7 1026.2 1022.2 1017.2 1018.9 1024.5 1028.6 1029.5 1024.9 1029.5 DAY 12 7 11 13 12 8 26 10 18 8 8 28 MIN. QNH PRESSURE IN HPA 1007.8 1011.8 1004.6 1007.2 1010.1 1009.8 1009.3 1011.9 1015.9 1019.6 1016.8 1011.4 1004.6 DAY 15 26 29 9 4 29 11 5 12 2 30 9 MEAN QFF PRESSURE IN HPA 1020.3 1022.4 1014.8 1012.8 1010.9 1002.1 996.0 998.5 1008.7 1014.9 1020.0 1021.8 1012.0 MAX. QFF PRESSURE IN HPA 1029.6 1033.8 1028.8 1024.2 1019.3 1009.0 1000.1 1003.1 1015.4 1020.6 1027.9 1032.4 1033.8 DAY 19 7 8 12 12 8 26 31 14 8 8 28 MIN. QFF PRESSURE IN HPA 1007.4 1010.5 1005.2 1003.2 1001.6 992.2 990.9 994.5 999.8 1007.4 1014.8 1009.7 990.9 DAY 15 21 29 9 4 29 11 5 2 2 4 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -4.9 -2.3 4.3 12.5 16.9 24.7 26.7 27.0 21.9 15.4 11.0 8.0 13.4 MINIMUN AIR TEMPERATURE (C) -9.6 -7.1 -0.9 5.0 8.9 14.4 16.8 18.2 12.6 6.3 4.3 1.7 5.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 7 0 0 0 0 8 DAYS WITH MINIMUM TEMP. <=-4 25 21 8 0 0 0 0 0 0 0 0 1 55 DAYS WITH FREEZING MIN.<= 0 31 25 19 2 0 0 0 0 0 0 2 13 92 TEMPERATURE RECORDS LOWEST(C) -19.6 -16.0 -8.6 -1.0 3.2 10.4 12.6 13.2 8.2 2.0 -2.6 -4.0 -19.6 DAY 10 17 3 25 5 3 26 5 23 25 14 5 MAXIMUM AIR TEMPERATURE (C) -1.5 1.0 8.2 17.0 21.4 29.6 32.2 32.0 27.3 21.0 15.5 12.7 18.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 15 25 23 5 0 0 0 68 DAYS WITH MAXIMUM TEMP. <= 0 22 14 2 0 0 0 0 0 0 0 0 0 38 TEMPERATURE RECORDS HIGHEST(C) 4.0 7.8 15.0 24.2 28.6 33.8 38.0 35.4 33.6 26.4 19.2 20.8 38.0 DAY 25 7 16 15 28 28 12 31 1 5 21 10 DIF. BETWEEN (MAX.-MIN.) (C) 8.1 8.1 9.1 12.0 12.5 15.2 15.4 13.8 14.7 14.7 11.2 11.0 12.1 MEAN DAILY TEMP. (MDT) (C) -5.5 -3.0 3.7 11.0 15.2 22.0 24.5 25.1 19.9 13.7 9.9 7.2 12.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 43.3 109.9 129.6 12.9 0.0 0.0 0.0 295.7 HEATING DEG. DAYS(BASE 18 0C) 729.6 589.4 444.8 210.2 97.1 0.7 0.0 0.0 4.1 135.5 242.8 334.2 2788.4 DEWPOINT (MEAN C) -9.1 -6.9 -3.7 -0.7 3.2 1.2 3.3 3.5 0.7 -2.0 -2.3 -5.2 -1.5 MIXING RATIO (G/KG) 2.52 2.94 3.78 4.62 6.06 5.30 6.29 6.32 5.15 4.20 4.15 3.31 4.55 VAPOUR PRESSURE (HPA) 3.25 3.80 4.87 5.97 7.82 6.84 8.07 8.13 6.65 5.46 5.39 4.30 5.88 SATURATION DEF. (HPA) 1.23 1.60 3.88 9.38 12.40 25.65 28.68 28.97 21.00 13.10 8.29 6.98 13.43 RELATIVE HUMIDITY (MEAN %) 74 73 61 44 43 24 26 26 28 35 44 44 44 RELATIVE HUMIDITY (MAX. %) 82 81 77 67 66 42 47 43 45 53 60 59 60 RELATIVE HUMIDITY (MIN. %) 65 65 47 29 30 15 14 16 17 23 31 30 32 RELATIVE HUMIDITY (MEAN% 03UTC) 76 76 73 66 65 40 45 43 45 51 57 57 58 RELATIVE HUMIDITY (MEAN% 09UTC) 72 70 53 36 35 18 19 21 22 30 41 38 38 RELATIVE HUMIDITY (MEAN% 15UTC) 73 73 57 37 37 18 17 18 20 31 40 40 38 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 41.4 39.8 153.2 53.7 35.3 1.2 14.0 20.6 3.2 5.7 19.2 1.6 388.9 DAYS WITH PRECIPITATION >=10 1 1 4 1 2 0 0 1 0 0 1 0 11 DAYS WITH PRECIPITATION >= 5 3 3 7 4 2 0 2 1 0 0 1 0 23 DAYS WITH PRECIPITATION >= 1 9 8 12 8 5 1 2 2 1 2 2 1 53 DAYS WITH PRECIPITATION 16 15 16 12 10 3 3 5 2 3 4 2 91 GREATEST DAILY PRECIPITATION 12.2 16.0 55.0 11.3 13.0 1.0 8.0 17.0 3.0 3.0 16.0 1.0 55.0 DAY 5 12 18 4 13 20 29 4 14 11 12 4 DAY WITH THUNDER STORM 0 0 0 2 3 3 1 5 1 1 0 0 16 DAYS WITH SNOW OR SLEET 13 11 8 1 0 0 0 0 0 0 0 0 33 DAYS WITH DUST 2 0 0 0 0 1 0 0 0 0 1 0 4 WIND DIRECTION (PREVAILING) 225 225 225 225 225 270 270 135 270 270 225 225 225 PREVAILING WIND SPEED(KNOTS) 13.1 16.4 17.9 14.9 15.1 12.4 12.7 11.2 13.6 11.9 15.1 14.0 14.8 PREVAILING WIND PERCENT 16.1 24.3 25.2 30.0 22.6 14.0 14.2 14.8 18.0 12.9 22.7 31.6 18.6 CALMS PERCENT OF WIND 68.4 50.0 45.8 39.3 44.5 45.3 44.5 47.7 52.7 59.4 50.0 47.7 49.6 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 232 241 238 247 231 213 236 173 243 236 242 238 237 VECTOR WIND MAGNITUDE(KNOTS) 3.3 5.5 6.7 5.5 4.2 2.2 2.4 1.1 3.4 2.0 5.5 5.6 3.9 WIND STEADINESES (MEAN %) 80.5 80.9 83.7 69.6 64.6 36.7 34.8 19.6 55.7 42.6 80.9 83.6 61.9 WIND SPEED (MEAN KNOTS) 4.1 6.8 8.0 7.9 6.5 6.0 6.9 5.6 6.1 4.7 6.8 6.7 6.3 FASTEST WIND DIRECTION 270 240 240 240 220 280 270 270 230 60 230 190 240 FASTEST WIND SPEED (KNOTS) 29 39 29 29 25 27 23 23 27 21 27 25 39 DAY 30 7 17 4 12 13 5 17 25 9 11 17 DAYS WITH SKY CLEAR (0-2)/8 9 11 13 9 16 25 26 19 28 24 15 14 209 DAYS WITH P.CLOUDY (3-6)/8 11 8 9 16 12 4 5 12 2 4 11 10 104 DAYS WITH CLOUDY (7-8)/8 11 9 9 5 3 1 0 0 0 3 4 7 52 DAYS WITH VISIBILITY =< 2 KM 13 9 5 1 0 0 0 0 0 0 2 2 32 DURATION OF SUNSHINE HOURS 123.1 138.8 188.9 259.5 311.7 354.7 363.6 310.6 313.0 294.9 212.6 189.9 3061.3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 807.3 808.7 807.5 809.6 810.4 810.1 807.0 809.9 810.5 813.4 813.6 813.3 810.1 MAX. QFE PRESSURE IN HPA 815.8 819.7 814.4 819.5 818.1 814.9 813.0 813.9 814.9 818.9 819.3 820.0 820.0 DAY-HOUR 22- 9 23- 6 27- 9 12- 6 8- 6 17- 3 20- 6 29- 6 29- 6 13- 6 21- 6 9- 6 MIN. QFE PRESSURE IN HPA 796.3 797.4 796.4 802.4 804.8 805.0 801.5 805.5 806.4 808.8 808.2 806.7 796.3 DAY-HOUR 12-12 15- 3 18- 9 21-12 21-12 30-15 4-15 22-15 4-12 1-15 10-12 24- 3 MEAN QNH PRESSURE IN HPA 1016.6 1018.3 1016.9 1019.4 1020.4 1020.0 1016.2 1019.7 1020.5 1024.0 1024.2 1023.9 1020.0 MAX. QNH PRESSURE IN HPA 1026.9 1031.6 1025.2 1031.3 1029.6 1025.8 1023.5 1024.6 1025.8 1030.6 1031.1 1031.9 1031.9 DAY-HOUR 22- 9 23- 6 27- 9 12- 6 8- 6 17- 3 20- 6 29- 6 29- 6 13- 6 21- 6 9- 6 MIN. QNH PRESSURE IN HPA 1003.4 1004.7 1003.5 1010.7 1013.6 1013.9 1009.6 1014.5 1015.5 1018.4 1017.7 1015.9 1003.4 DAY-HOUR 12-12 15- 3 18- 9 21-12 21-12 30-15 4-15 22-15 4-12 1-15 10-12 24- 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 806.8 808.4 807.4 809.4 810.5 810.5 807.7 810.4 810.9 813.6 813.4 813.2 810.2 MAX. QFE PRESSURE IN HPA 814.4 818.9 813.8 818.7 817.2 814.9 812.9 813.0 813.8 818.0 818.0 819.2 819.2 DAY 22 23 28 12 8 17 20 25 29 9 21 9 MIN. QFE PRESSURE IN HPA 796.4 797.4 800.2 803.1 805.2 807.3 803.2 807.4 808.0 809.9 808.5 806.7 796.4 DAY 13 15 15 22 30 27 5 23 4 2 11 24 MEAN QNH PRESSURE IN HPA 1016.1 1017.9 1016.7 1019.1 1020.5 1020.5 1017.0 1020.4 1020.9 1024.3 1024.0 1023.7 1020.1 MAX. QNH PRESSURE IN HPA 1025.2 1030.6 1024.5 1030.4 1028.6 1025.8 1023.4 1023.5 1024.5 1029.5 1029.5 1031.0 1031.0 DAY 22 23 28 12 8 17 20 25 29 9 21 9 MIN. QNH PRESSURE IN HPA 1003.5 1004.7 1008.1 1011.6 1014.1 1016.6 1011.7 1016.8 1017.5 1019.8 1018.1 1015.9 1003.5 DAY 13 15 15 22 30 27 5 23 4 2 11 24 MEAN QFF PRESSURE IN HPA 1023.4 1022.9 1016.3 1012.7 1010.6 1005.0 999.7 1003.0 1007.6 1016.3 1018.9 1021.0 1013.1 MAX. QFF PRESSURE IN HPA 1038.4 1039.4 1024.8 1023.7 1021.1 1012.4 1007.9 1008.5 1013.3 1023.5 1025.7 1030.3 1039.4 DAY 22 23 5 7 4 20 30 4 26 14 25 5 MIN. QFF PRESSURE IN HPA 1009.2 1003.5 1002.3 1004.0 1001.9 998.5 993.3 998.0 1001.4 1006.5 1010.2 1010.8 993.3 DAY 30 8 17 17 12 27 13 17 1 2 11 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 807.8 809.2 808.2 810.3 811.2 810.9 807.9 810.9 811.5 814.6 814.6 814.2 810.9 MAX. QFE PRESSURE IN HPA 815.6 819.7 814.2 819.5 818.1 814.9 813.0 813.9 814.9 818.9 819.3 820.0 820.0 DAY 22 23 28 12 8 17 20 29 29 13 21 9 MIN. QFE PRESSURE IN HPA 797.0 798.0 801.4 804.1 805.8 807.6 803.6 807.9 808.3 810.7 810.5 808.5 797.0 DAY 13 15 18 23 30 27 5 21 5 1 11 24 MEAN QNH PRESSURE IN HPA 1017.2 1019.0 1017.7 1020.2 1021.3 1020.9 1017.3 1021.0 1021.7 1025.4 1025.5 1024.9 1021.0 MAX. QNH PRESSURE IN HPA 1026.6 1031.6 1024.9 1031.3 1029.6 1025.8 1023.5 1024.6 1025.8 1030.6 1031.1 1031.9 1031.9 DAY 22 23 28 12 8 17 20 29 29 13 21 9 MIN. QNH PRESSURE IN HPA 1004.2 1005.4 1009.5 1012.8 1014.8 1017.0 1012.2 1017.4 1017.8 1020.7 1020.5 1018.1 1004.2 DAY 13 15 18 23 30 27 5 21 5 1 11 24 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 807.7 809.2 807.8 810.0 810.8 810.4 807.2 810.2 810.8 813.8 813.9 813.6 810.5 MAX. QFE PRESSURE IN HPA 815.8 819.1 814.4 819.5 817.6 814.1 812.6 813.2 813.8 818.4 818.8 819.3 819.5 DAY 22 23 27 12 8 20 20 29 19 13 21 29 MIN. QFE PRESSURE IN HPA 798.6 800.8 796.4 803.4 805.2 807.2 802.6 807.0 807.4 810.0 809.1 808.5 796.4 DAY 13 14 18 23 21 30 3 21 4 2 10 24 MEAN QNH PRESSURE IN HPA 1017.1 1018.9 1017.2 1019.9 1020.8 1020.4 1016.5 1020.2 1020.9 1024.4 1024.6 1024.3 1020.4 MAX. QNH PRESSURE IN HPA 1026.9 1030.9 1025.2 1031.3 1029.0 1024.8 1023.0 1023.7 1024.5 1030.0 1030.5 1031.1 1031.3 DAY 22 23 27 12 8 20 20 29 19 13 21 29 MIN. QNH PRESSURE IN HPA 1006.1 1008.8 1003.5 1011.9 1014.1 1016.5 1011.0 1016.3 1016.8 1019.9 1018.8 1018.1 1003.5 DAY 13 14 18 23 21 30 3 21 4 2 10 24 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 806.8 808.2 807.0 809.2 809.9 809.4 806.2 809.0 809.6 812.6 812.9 812.6 809.5 MAX. QFE PRESSURE IN HPA 814.3 818.0 813.5 818.4 816.8 813.2 811.4 812.2 812.3 817.6 818.0 818.1 818.4 DAY 22 22 27 12 8 16 20 29 19 13 21 9 MIN. QFE PRESSURE IN HPA 796.3 800.0 797.6 802.4 804.8 805.4 801.9 806.0 806.4 809.0 808.2 808.5 796.3 DAY 12 14 18 21 21 30 8 22 4 1 10 20 MEAN QNH PRESSURE IN HPA 1016.0 1017.7 1016.3 1019.0 1019.8 1019.2 1015.3 1018.7 1019.4 1023.0 1023.3 1023.0 1019.2 MAX. QNH PRESSURE IN HPA 1025.1 1029.5 1024.1 1030.0 1028.1 1023.7 1021.6 1022.5 1022.7 1029.0 1029.5 1029.6 1030.0 DAY 22 22 27 12 8 16 20 29 19 13 21 9 MIN. QNH PRESSURE IN HPA 1003.4 1007.8 1004.9 1010.7 1013.6 1014.3 1010.1 1015.1 1015.5 1018.7 1017.7 1018.1 1003.4 DAY 12 14 18 21 21 30 8 22 4 1 10 20 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 807.2 808.4 807.2 809.0 809.8 809.2 806.0 808.7 809.7 812.7 813.2 813.1 809.5 MAX. QFE PRESSURE IN HPA 814.3 818.7 813.5 817.5 816.0 813.1 811.0 812.0 812.2 818.0 818.2 819.0 819.0 DAY 22 22 27 12 8 5 20 29 29 13 21 9 MIN. QFE PRESSURE IN HPA 796.7 800.0 798.7 802.4 804.8 805.0 801.5 805.5 806.7 808.8 808.6 808.7 796.7 DAY 12 15 17 21 21 30 4 22 4 1 10 20 MEAN QNH PRESSURE IN HPA 1016.5 1018.0 1016.5 1018.7 1019.6 1018.9 1015.1 1018.3 1019.5 1023.1 1023.8 1023.6 1019.3 MAX. QNH PRESSURE IN HPA 1025.1 1030.4 1024.1 1028.9 1027.1 1023.6 1021.1 1022.3 1022.5 1029.5 1029.8 1030.7 1030.7 DAY 22 22 27 12 8 5 20 29 29 13 21 9 MIN. QNH PRESSURE IN HPA 1003.8 1007.8 1006.3 1010.7 1013.6 1013.9 1009.6 1014.5 1015.9 1018.4 1018.2 1018.3 1003.8 DAY 12 15 17 21 21 30 4 22 4 1 10 20 MEAN QFF PRESSURE IN HPA 1023.9 1023.0 1015.9 1012.1 1009.6 1003.4 998.0 1001.0 1006.3 1015.2 1018.7 1020.9 1012.3 MAX. QFF PRESSURE IN HPA 1039.2 1039.8 1024.1 1021.1 1019.3 1011.0 1008.6 1005.3 1011.1 1023.2 1025.5 1030.2 1039.8 DAY 22 22 21 6 3 19 29 3 26 13 25 29 MIN. QFF PRESSURE IN HPA 1008.9 1006.2 1000.5 1003.0 1001.8 997.9 991.8 996.0 999.6 1006.3 1009.9 1011.2 991.8 DAY 12 7 17 21 29 29 12 21 1 2 10 17 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.3 3.9 6.0 12.1 19.5 24.9 25.7 27.2 21.6 16.5 6.3 2.2 13.8 MINIMUN AIR TEMPERATURE (C) -4.4 -2.1 -0.8 5.2 9.9 14.5 16.4 18.1 11.2 9.2 1.5 -3.1 6.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 2 5 0 0 0 0 8 DAYS WITH MINIMUM TEMP. <=-4 13 10 4 0 0 0 0 0 0 0 2 10 39 DAYS WITH FREEZING MIN.<= 0 28 19 18 0 0 0 0 0 0 0 10 23 98 TEMPERATURE RECORDS LOWEST(C) -14.4 -9.8 -5.4 1.0 2.2 11.0 11.0 13.2 5.4 2.6 -8.0 -14.6 -14.6 DAY 23 7 5 11 21 17 13 21 28 14 30 6 MAXIMUM AIR TEMPERATURE (C) 3.4 8.1 10.7 16.2 24.0 29.6 31.3 32.3 27.3 20.9 10.5 6.9 18.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 2 14 20 28 7 0 0 0 71 DAYS WITH MAXIMUM TEMP. <= 0 5 2 0 0 0 0 0 0 0 0 0 2 9 TEMPERATURE RECORDS HIGHEST(C) 8.8 13.4 18.4 22.8 31.0 32.6 35.6 34.8 31.0 26.6 16.0 15.0 35.6 DAY 8 26 31 30 30 20 5 27 4 4 19 30 DIF. BETWEEN (MAX.-MIN.) (C) 7.8 10.2 11.5 11.0 14.1 15.1 14.9 14.2 16.1 11.7 9.0 10.0 12.1 MEAN DAILY TEMP. (MDT) (C) -0.5 3.0 4.9 10.7 17.0 22.0 23.8 25.2 19.3 15.0 6.0 1.9 12.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 6.4 41.0 93.7 130.3 8.7 0.0 0.0 0.0 280.1 HEATING DEG. DAYS(BASE 18 0C) 573.6 419.6 404.7 218.9 58.3 0.0 0.0 0.0 17.9 99.9 361.1 499.4 2653.4 DEWPOINT (MEAN C) -5.0 -6.0 -6.1 -3.0 -2.5 -3.1 2.6 1.5 -2.1 -2.4 -2.6 -4.8 -2.8 MIXING RATIO (G/KG) 3.40 3.12 3.14 4.01 4.08 3.94 6.07 5.45 4.23 4.12 4.04 3.42 4.09 VAPOUR PRESSURE (HPA) 4.39 4.03 4.06 5.18 5.28 5.08 7.79 7.03 5.46 5.35 5.24 4.45 5.28 SATURATION DEF. (HPA) 1.83 4.38 5.72 9.56 18.57 27.59 26.96 30.27 21.82 14.29 4.77 3.15 14.08 RELATIVE HUMIDITY (MEAN %) 73 52 46 39 26 18 27 22 24 32 57 64 40 RELATIVE HUMIDITY (MAX. %) 82 70 66 61 48 33 45 38 41 45 73 76 57 RELATIVE HUMIDITY (MIN. %) 60 37 31 25 15 10 16 13 13 22 43 51 28 RELATIVE HUMIDITY (MEAN% 03UTC) 78 63 62 58 45 33 45 38 41 45 69 73 54 RELATIVE HUMIDITY (MEAN% 09UTC) 70 48 41 31 19 14 22 16 20 27 52 59 35 RELATIVE HUMIDITY (MEAN% 15UTC) 74 48 38 32 20 11 17 17 14 30 54 65 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 53.0 26.2 41.0 27.2 9.6 0.0 23.3 5.4 0.0 25.5 40.7 22.8 274.7 DAYS WITH PRECIPITATION >=10 1 0 1 1 0 0 2 0 0 1 1 0 7 DAYS WITH PRECIPITATION >= 5 4 2 3 2 1 0 2 0 0 1 4 2 21 DAYS WITH PRECIPITATION >= 1 8 6 7 4 4 0 2 2 0 2 5 5 45 DAYS WITH PRECIPITATION 13 7 8 9 6 1 3 4 1 7 8 9 76 GREATEST DAILY PRECIPITATION 20.0 8.0 13.0 14.0 5.0 0.0 12.3 4.0 0.0 22.0 18.0 5.7 22.0 DAY 9 6 21 2 9 ** 15 22 ** 31 1 11 DAY WITH THUNDER STORM 0 0 0 5 1 0 1 0 0 0 1 0 8 DAYS WITH SNOW OR SLEET 9 3 2 1 0 0 0 0 0 0 2 3 20 DAYS WITH DUST 0 1 3 1 3 2 3 0 0 2 0 0 15 WIND DIRECTION (PREVAILING) 270 225 270 270 270 270 135 135 270 225 270 225 270 PREVAILING WIND SPEED(KNOTS) 11.5 16.5 12.5 13.2 14.1 15.3 12.2 10.3 12.7 13.6 12.9 12.1 13.2 PREVAILING WIND PERCENT 10.3 31.4 26.5 30.7 27.1 30.7 13.5 21.2 21.3 24.5 22.0 12.9 20.4 CALMS PERCENT OF WIND 71.6 37.9 42.6 27.3 27.1 32.7 43.2 33.9 57.3 41.9 51.3 72.9 45.0 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 165 150 155 150 155 1835 VECTOR WIND DIRECTION (MEAN) 238 241 251 253 264 253 197 158 273 252 262 201 249 VECTOR WIND MAGNITUDE(KNOTS) 1.2 7.7 4.6 7.5 6.2 6.9 1.3 2.0 4.0 6.5 4.5 1.9 4.2 WIND STEADINESES (MEAN %) 41.4 87.5 63.9 75.0 68.1 75.8 18.3 29.9 80.0 84.4 77.6 65.5 60.9 WIND SPEED (MEAN KNOTS) 2.9 8.8 7.2 10.0 9.1 9.1 7.1 6.7 5.0 7.7 5.8 2.9 6.9 FASTEST WIND DIRECTION 240 220 230 90 210 270 240 270 270 260 240 230 90 FASTEST WIND SPEED (KNOTS) 19 27 29 35 25 27 23 25 21 31 27 19 35 DAY 10 3 20 1 9 2 7 29 4 12 25 26 DAYS WITH SKY CLEAR (0-2)/8 12 17 16 12 25 28 26 18 30 20 12 14 230 DAYS WITH P.CLOUDY (3-6)/8 10 8 8 15 4 1 4 13 0 10 11 8 92 DAYS WITH CLOUDY (7-8)/8 9 3 7 3 2 1 1 0 0 1 7 9 43 DAYS WITH VISIBILITY =< 2 KM 6 0 2 0 1 0 1 0 0 2 1 4 17 DURATION OF SUNSHINE HOURS 142.6 236.7 239.6 279.9 338.3 362.9 347.5 301.0 332.7 272.5 179.7 175.1 3208.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 810.0 808.4 807.2 809.3 810.0 808.0 806.4 809.1 809.9 812.7 811.6 814.0 809.7 MAX. QFE PRESSURE IN HPA 819.0 814.1 814.0 814.0 818.0 812.8 809.9 815.8 815.2 816.7 817.0 819.2 819.2 DAY-HOUR 2- 6 12- 6 31- 6 11- 6 28- 6 1- 3 9- 6 20- 6 30- 6 1- 6 3- 6 6- 6 MIN. QFE PRESSURE IN HPA 799.6 796.0 801.2 800.1 802.3 800.5 801.2 804.0 805.3 807.0 804.3 806.4 796.0 DAY-HOUR 9- 6 20-12 26-12 8- 9 20-12 24-15 13-15 14-15 12-12 31-12 26- 3 15-12 MEAN QNH PRESSURE IN HPA 1019.8 1017.9 1016.6 1019.0 1019.9 1017.4 1015.6 1018.8 1019.8 1023.2 1021.9 1024.7 1019.5 MAX. QNH PRESSURE IN HPA 1030.7 1024.8 1024.7 1024.7 1029.5 1023.3 1019.8 1026.9 1026.2 1028.0 1028.3 1031.0 1031.0 DAY-HOUR 2- 6 12- 6 31- 6 11- 6 28- 6 1- 3 9- 6 20- 6 30- 6 1- 6 3- 6 6- 6 MIN. QNH PRESSURE IN HPA 1007.3 1003.0 1009.3 1007.9 1010.6 1008.4 1009.3 1012.7 1014.2 1016.3 1013.0 1015.5 1003.0 DAY-HOUR 9- 6 20-12 26-12 8- 9 20-12 24-15 13-15 14-15 12-12 31-12 26- 3 15-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 809.6 808.3 807.3 809.2 810.4 808.5 807.2 809.7 810.2 812.9 811.4 813.9 809.9 MAX. QFE PRESSURE IN HPA 818.1 813.0 813.3 812.8 817.8 812.8 809.5 815.2 814.0 815.9 815.9 818.0 818.1 DAY 2 12 31 11 28 1 28 20 30 7 3 6 MIN. QFE PRESSURE IN HPA 800.1 800.8 801.6 801.0 805.0 801.2 802.2 806.4 807.0 808.3 804.3 807.9 800.1 DAY 9 6 21 8 20 25 14 7 16 31 26 14 MEAN QNH PRESSURE IN HPA 1019.4 1017.8 1016.6 1018.9 1020.4 1018.0 1016.5 1019.5 1020.2 1023.4 1021.6 1024.5 1019.7 MAX. QNH PRESSURE IN HPA 1029.6 1023.5 1023.9 1023.3 1029.3 1023.3 1019.3 1026.2 1024.7 1027.0 1027.0 1029.5 1029.6 DAY 2 12 31 11 28 1 28 20 30 7 3 6 MIN. QNH PRESSURE IN HPA 1007.9 1008.8 1009.8 1009.0 1013.9 1009.3 1010.5 1015.5 1016.3 1017.8 1013.0 1017.4 1007.9 DAY 9 6 21 8 20 25 14 7 16 31 26 14 MEAN QFF PRESSURE IN HPA 1022.8 1018.3 1015.2 1012.8 1009.0 1002.4 999.6 1002.3 1007.3 1014.2 1019.5 1026.7 1012.5 MAX. QFF PRESSURE IN HPA 1036.9 1025.9 1023.9 1021.6 1016.5 1008.0 1004.5 1013.3 1016.9 1020.6 1031.9 1041.4 1041.4 DAY 2 7 5 10 28 1 28 20 28 27 30 6 MIN. QFF PRESSURE IN HPA 1005.9 1006.8 1006.6 1001.9 1000.4 992.2 993.5 996.9 1002.8 1010.1 1008.1 1015.2 992.2 DAY 9 20 26 8 20 25 22 14 11 12 26 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 810.5 809.3 808.2 810.1 810.8 808.8 807.5 810.1 810.8 813.8 812.3 814.9 810.6 MAX. QFE PRESSURE IN HPA 819.0 814.1 814.0 814.0 818.0 812.7 809.9 815.8 815.2 816.7 817.0 819.2 819.2 DAY 2 12 31 11 28 1 9 20 30 1 3 6 MIN. QFE PRESSURE IN HPA 799.6 801.0 802.3 800.5 803.8 802.0 803.4 806.4 807.4 808.3 805.2 809.0 799.6 DAY 9 20 21 8 20 25 14 14 12 31 26 15 MEAN QNH PRESSURE IN HPA 1020.5 1019.0 1017.7 1020.0 1020.8 1018.5 1016.9 1020.0 1020.9 1024.4 1022.7 1025.7 1020.6 MAX. QNH PRESSURE IN HPA 1030.7 1024.8 1024.7 1024.7 1029.5 1023.1 1019.8 1026.9 1026.2 1028.0 1028.3 1031.0 1031.0 DAY 2 12 31 11 28 1 9 20 30 1 3 6 MIN. QNH PRESSURE IN HPA 1007.3 1009.0 1010.6 1008.4 1012.4 1010.2 1011.9 1015.5 1016.8 1017.8 1014.1 1018.7 1007.3 DAY 9 20 21 8 20 25 14 14 12 31 26 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 810.4 808.9 807.8 809.6 810.3 808.2 806.7 809.6 810.3 813.1 811.9 814.3 810.1 MAX. QFE PRESSURE IN HPA 818.1 814.0 813.9 814.0 817.6 812.7 809.1 814.5 815.0 816.0 816.2 819.0 819.0 DAY 2 12 31 11 28 1 19 19 30 7 3 5 MIN. QFE PRESSURE IN HPA 800.0 799.0 802.0 800.1 803.8 801.8 803.1 805.3 806.6 808.3 806.0 807.4 799.0 DAY 9 20 21 8 20 24 14 14 12 31 26 15 MEAN QNH PRESSURE IN HPA 1020.4 1018.6 1017.2 1019.4 1020.3 1017.8 1016.0 1019.4 1020.2 1023.7 1022.2 1025.1 1020.0 MAX. QNH PRESSURE IN HPA 1029.6 1024.7 1024.6 1024.7 1029.0 1023.1 1018.8 1025.3 1025.9 1027.1 1027.4 1030.7 1030.7 DAY 2 12 31 11 28 1 19 19 30 7 3 5 MIN. QNH PRESSURE IN HPA 1007.8 1006.6 1010.2 1007.9 1012.4 1010.0 1011.6 1014.2 1015.8 1017.8 1015.1 1016.8 1006.6 DAY 9 20 21 8 20 24 14 14 12 31 26 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 809.4 807.6 806.5 808.7 809.4 807.3 805.6 808.4 809.0 811.9 811.2 813.3 809.0 MAX. QFE PRESSURE IN HPA 816.3 812.7 812.7 812.7 816.5 811.0 808.0 813.5 814.0 814.9 815.1 818.2 818.2 DAY 2 12 30 11 28 1 18 20 30 7 15 5 MIN. QFE PRESSURE IN HPA 800.5 796.0 801.2 800.1 802.3 801.0 802.3 804.2 805.3 807.0 805.8 806.4 796.0 DAY 9 20 26 8 20 24 13 14 12 31 26 15 MEAN QNH PRESSURE IN HPA 1019.1 1017.0 1015.6 1018.4 1019.2 1016.6 1014.6 1017.9 1018.7 1022.2 1021.3 1023.9 1018.7 MAX. QNH PRESSURE IN HPA 1027.5 1023.1 1023.1 1023.1 1027.7 1021.1 1017.5 1024.1 1024.7 1025.8 1026.0 1029.8 1029.8 DAY 2 12 30 11 28 1 18 20 30 7 15 5 MIN. QNH PRESSURE IN HPA 1008.4 1003.0 1009.3 1007.9 1010.6 1009.0 1010.6 1012.9 1014.2 1016.3 1014.8 1015.5 1003.0 DAY 9 20 26 8 20 24 13 14 12 31 26 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 809.9 807.7 806.6 808.7 809.1 806.9 805.2 808.2 809.1 812.1 811.4 813.7 809.1 MAX. QFE PRESSURE IN HPA 816.5 812.9 812.2 812.4 815.4 811.0 807.5 814.6 814.0 815.3 815.3 818.6 818.6 DAY 2 12 30 10 28 1 9 19 30 6 15 5 MIN. QFE PRESSURE IN HPA 803.0 796.0 802.0 802.9 803.0 800.5 801.2 804.0 806.1 807.0 805.8 806.4 796.0 DAY 9 20 21 8 20 24 13 14 12 31 26 15 MEAN QNH PRESSURE IN HPA 1019.8 1017.1 1015.8 1018.3 1018.7 1016.2 1014.1 1017.7 1018.8 1022.4 1021.6 1024.4 1018.7 MAX. QNH PRESSURE IN HPA 1027.7 1023.4 1022.5 1022.8 1026.4 1021.1 1016.9 1025.4 1024.7 1026.3 1026.3 1030.2 1030.2 DAY 2 12 30 10 28 1 9 19 30 6 15 5 MIN. QNH PRESSURE IN HPA 1011.4 1003.0 1010.2 1011.3 1011.4 1008.4 1009.3 1012.7 1015.2 1016.3 1014.8 1015.5 1003.0 DAY 9 20 21 8 20 24 13 14 12 31 26 15 MEAN QFF PRESSURE IN HPA 1023.1 1017.4 1014.3 1012.2 1007.3 1000.6 997.4 1000.6 1006.1 1013.3 1019.7 1026.5 1011.5 MAX. QFF PRESSURE IN HPA 1035.4 1024.4 1024.4 1020.1 1013.4 1005.9 1001.7 1012.2 1015.6 1020.7 1030.7 1040.4 1040.4 DAY 22 12 18 10 1 15 15 19 28 26 30 5 MIN. QFF PRESSURE IN HPA 1010.3 1000.9 1007.3 1003.2 999.5 992.0 991.0 994.1 1001.4 1009.4 1010.2 1014.6 991.0 DAY 9 20 20 13 19 24 21 13 11 31 25 15 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -2.1 -1.7 5.7 14.3 19.0 24.1 27.6 27.0 22.0 13.1 5.1 0.8 12.9 MINIMUN AIR TEMPERATURE (C) -6.5 -7.7 -1.7 6.5 10.3 12.8 17.3 17.4 12.2 5.8 0.4 -3.1 5.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 5 0 0 0 0 6 DAYS WITH MINIMUM TEMP. <=-4 21 19 10 0 0 0 0 0 0 0 0 11 61 DAYS WITH FREEZING MIN.<= 0 26 28 21 0 0 0 0 0 0 1 13 24 113 TEMPERATURE RECORDS LOWEST(C) -21.2 -20.8 -8.0 0.4 3.3 4.2 14.0 10.4 10.0 0.0 -2.4 -13.0 -21.2 DAY 31 4 9 11 10 14 28 30 1 29 29 29 MAXIMUM AIR TEMPERATURE (C) 1.2 2.5 10.2 18.4 23.6 29.6 33.0 32.3 27.6 17.8 8.9 4.0 17.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 15 31 29 6 0 0 0 81 DAYS WITH MAXIMUM TEMP. <= 0 15 9 0 0 0 0 0 0 0 0 0 4 28 TEMPERATURE RECORDS HIGHEST(C) 13.4 11.0 17.0 22.3 27.6 35.4 35.6 34.2 33.0 22.4 14.6 10.2 35.6 DAY 1 24 22 28 25 30 2 2 9 7 4 1 DIF. BETWEEN (MAX.-MIN.) (C) 7.7 10.2 11.9 11.9 13.3 16.8 15.7 14.9 15.4 12.0 8.5 7.1 12.1 MEAN DAILY TEMP. (MDT) (C) -2.6 -2.6 4.3 12.5 17.0 21.2 25.2 24.8 19.9 11.8 4.7 0.5 11.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.1 35.3 129.1 120.7 10.7 0.0 0.0 0.0 296.0 HEATING DEG. DAYS(BASE 18 0C) 639.6 598.1 426.1 166.4 47.1 9.1 0.0 0.0 5.4 192.4 400.2 543.9 3028.4 DEWPOINT (MEAN C) -8.1 -8.1 -6.6 -1.8 -2.6 -3.1 -0.0 -0.7 -2.7 -1.3 -1.1 -3.2 -3.3 MIXING RATIO (G/KG) 2.71 2.72 3.07 4.35 4.11 4.01 5.00 4.75 4.11 4.53 4.50 3.82 3.97 VAPOUR PRESSURE (HPA) 3.50 3.52 3.96 5.62 5.30 5.17 6.43 6.13 5.31 5.87 5.83 4.94 5.13 SATURATION DEF. (HPA) 2.16 2.39 5.74 11.22 17.49 26.50 32.03 30.86 22.48 9.82 3.14 1.77 13.80 RELATIVE HUMIDITY (MEAN %) 67 65 46 36 27 20 19 19 23 43 68 76 42 RELATIVE HUMIDITY (MAX. %) 78 76 66 57 47 37 35 33 41 62 85 88 59 RELATIVE HUMIDITY (MIN. %) 57 53 30 24 15 9 11 11 12 28 51 64 30 RELATIVE HUMIDITY (MEAN% 03UTC) 71 71 62 55 47 37 35 33 38 59 82 84 56 RELATIVE HUMIDITY (MEAN% 09UTC) 64 61 40 28 20 15 14 15 18 36 62 71 37 RELATIVE HUMIDITY (MEAN% 15UTC) 68 66 39 29 20 11 12 13 15 41 68 75 38 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 38.9 15.6 76.5 26.2 6.9 0.0 0.4 0.0 6.0 31.1 54.8 60.9 317.3 DAYS WITH PRECIPITATION >=10 2 0 2 2 0 0 0 0 0 0 2 2 10 DAYS WITH PRECIPITATION >= 5 3 1 4 2 0 0 0 0 0 2 3 5 20 DAYS WITH PRECIPITATION >= 1 5 2 5 3 2 0 0 0 2 7 6 10 42 DAYS WITH PRECIPITATION 12 9 7 8 5 0 2 2 2 10 8 14 79 GREATEST DAILY PRECIPITATION 11.0 9.0 36.0 13.2 4.0 0.0 0.4 0.0 4.0 9.0 22.0 16.0 36.0 DAY 6 14 24 9 9 ** 8 ** 29 27 6 1 DAY WITH THUNDER STORM 0 0 0 3 1 0 0 0 2 1 1 0 8 DAYS WITH SNOW OR SLEET 7 3 0 0 0 0 0 0 0 0 2 11 23 DAYS WITH DUST 1 0 1 7 7 5 7 5 3 0 0 1 37 WIND DIRECTION (PREVAILING) 225 225 270 270 270 270 135 135 270 225 135 225 270 PREVAILING WIND SPEED(KNOTS) 17.8 10.4 13.4 14.3 11.4 11.8 11.4 9.5 13.7 12.6 10.1 15.3 12.0 PREVAILING WIND PERCENT 25.2 20.0 28.4 28.7 32.3 21.3 29.7 16.1 22.7 20.0 9.3 11.0 17.3 CALMS PERCENT OF WIND 61.9 60.0 32.9 28.0 27.7 41.3 31.0 32.3 35.3 51.0 64.7 67.1 44.4 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 229 246 246 252 257 251 128 236 249 229 174 219 240 VECTOR WIND MAGNITUDE(KNOTS) 5.3 3.6 7.0 8.3 7.2 2.6 3.4 1.8 4.8 2.8 0.8 2.4 3.7 WIND STEADINESES (MEAN %) 91.4 85.7 76.9 81.4 85.7 41.9 48.6 26.1 64.9 58.3 30.8 68.6 57.8 WIND SPEED (MEAN KNOTS) 5.8 4.2 9.1 10.2 8.4 6.2 7.0 6.9 7.4 4.8 2.6 3.5 6.4 FASTEST WIND DIRECTION 220 260 210 240 220 230 250 280 220 240 120 220 220 FASTEST WIND SPEED (KNOTS) 35 19 31 31 27 23 19 25 27 29 16 27 35 DAY 19 14 8 10 3 19 2 4 10 27 17 21 DAYS WITH SKY CLEAR (0-2)/8 12 15 19 10 27 28 25 25 28 19 6 8 222 DAYS WITH P.CLOUDY (3-6)/8 12 12 9 14 4 2 5 5 1 8 16 17 105 DAYS WITH CLOUDY (7-8)/8 7 2 3 6 0 0 1 1 1 4 8 6 39 DAYS WITH VISIBILITY =< 2 KM 12 3 0 1 2 0 0 0 0 0 8 11 37 DURATION OF SUNSHINE HOURS 156.1 214.9 288.1 250.3 349.0 375.8 342.0 323.3 308.7 248.2 141.6 136.3 3134.3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 807.6 808.7 807.8 810.0 808.9 807.5 808.1 808.9 809.7 812.5 812.9 810.3 809.4 MAX. QFE PRESSURE IN HPA 816.4 815.3 813.8 815.0 813.2 812.3 815.0 812.6 816.0 816.2 818.7 816.6 818.7 DAY-HOUR 31- 6 11- 6 27- 6 2- 6 7- 6 13- 6 30- 6 23- 6 29-12 30- 6 17- 6 4- 6 MIN. QFE PRESSURE IN HPA 797.0 797.0 796.7 804.9 804.0 803.2 801.1 803.8 803.6 808.3 808.6 803.2 796.7 DAY-HOUR 21-12 7- 3 24-12 21-12 19-15 26-12 10-15 30-12 2-12 2-12 22-12 15- 3 MEAN QNH PRESSURE IN HPA 1017.0 1018.3 1017.2 1019.9 1018.5 1016.9 1017.6 1018.5 1019.5 1022.9 1023.4 1020.3 1019.2 MAX. QNH PRESSURE IN HPA 1027.6 1026.3 1024.5 1025.9 1023.7 1022.7 1025.9 1023.0 1027.1 1027.4 1030.4 1027.8 1030.4 DAY-HOUR 31- 6 11- 6 27- 6 2- 6 7- 6 13- 6 30- 6 23- 6 29-12 30- 6 17- 6 4- 6 MIN. QNH PRESSURE IN HPA 1004.2 1004.2 1003.8 1013.7 1012.7 1011.7 1009.2 1012.4 1012.2 1017.8 1018.2 1011.7 1003.8 DAY-HOUR 21-12 7- 3 24-12 21-12 19-15 26-12 10-15 30-12 2-12 2-12 22-12 15- 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 807.5 808.5 807.9 810.1 809.1 808.3 808.8 809.5 810.2 812.6 812.9 810.0 809.6 MAX. QFE PRESSURE IN HPA 815.6 814.3 813.0 814.2 812.3 812.1 814.3 812.2 815.0 815.3 817.9 815.4 817.9 DAY 31 11 27 2 7 13 30 8 29 6 17 18 MIN. QFE PRESSURE IN HPA 799.0 797.0 799.7 805.0 805.2 804.8 802.5 805.1 805.0 810.0 808.9 803.2 797.0 DAY 21 7 24 10 21 26 11 31 3 1 22 15 MEAN QNH PRESSURE IN HPA 1016.9 1018.1 1017.3 1020.0 1018.8 1017.8 1018.4 1019.3 1020.1 1023.0 1023.3 1019.8 1019.4 MAX. QNH PRESSURE IN HPA 1026.6 1025.1 1023.5 1024.9 1022.7 1022.4 1025.1 1022.5 1025.9 1026.3 1029.4 1026.4 1029.4 DAY 31 11 27 2 7 13 30 8 29 6 17 18 MIN. QNH PRESSURE IN HPA 1006.6 1004.2 1007.5 1013.9 1014.1 1013.6 1010.8 1014.0 1013.9 1019.9 1018.6 1011.7 1004.2 DAY 21 7 24 10 21 26 11 31 3 1 22 15 MEAN QFF PRESSURE IN HPA 1021.7 1023.5 1016.5 1012.2 1007.5 1002.9 1000.8 1002.1 1006.9 1016.2 1022.4 1022.2 1012.9 MAX. QFF PRESSURE IN HPA 1044.1 1039.6 1023.9 1020.1 1014.6 1011.9 1008.4 1007.8 1014.9 1023.1 1028.9 1035.9 1044.1 DAY 31 11 1 2 7 13 30 9 29 29 17 29 MIN. QFF PRESSURE IN HPA 1007.5 1005.3 1001.8 1005.0 1002.0 996.2 991.5 997.1 1000.2 1010.6 1017.4 1013.6 991.5 DAY 21 7 24 21 26 24 11 3 3 23 1 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 808.4 809.4 808.6 810.9 809.6 808.6 809.2 810.0 810.8 813.3 813.8 811.0 810.3 MAX. QFE PRESSURE IN HPA 816.4 815.3 813.8 815.0 813.2 812.3 815.0 812.6 814.4 816.2 818.7 816.6 818.7 DAY 31 11 27 2 7 13 30 23 29 30 17 4 MIN. QFE PRESSURE IN HPA 798.5 798.8 799.3 806.3 805.7 805.0 803.0 805.6 805.6 810.6 810.1 804.3 798.5 DAY 21 7 24 10 21 26 11 30 3 1 22 15 MEAN QNH PRESSURE IN HPA 1017.9 1019.2 1018.2 1020.9 1019.4 1018.2 1018.9 1019.9 1020.8 1023.9 1024.5 1021.1 1020.2 MAX. QNH PRESSURE IN HPA 1027.6 1026.3 1024.5 1025.9 1023.7 1022.7 1025.9 1023.0 1025.2 1027.4 1030.4 1027.8 1030.4 DAY 31 11 27 2 7 13 30 23 29 30 17 4 MIN. QNH PRESSURE IN HPA 1006.0 1006.4 1007.0 1015.4 1014.7 1013.9 1011.4 1014.6 1014.6 1020.6 1020.0 1013.0 1006.0 DAY 21 7 24 10 21 26 11 30 3 1 22 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 807.9 809.1 808.2 810.4 809.1 807.8 808.4 809.3 809.9 812.7 813.1 810.5 809.7 MAX. QFE PRESSURE IN HPA 816.0 815.0 812.8 814.2 813.0 811.8 814.3 812.0 814.8 815.1 817.2 815.9 817.2 DAY 30 10 27 2 7 13 30 23 29 16 11 4 MIN. QFE PRESSURE IN HPA 798.0 799.7 798.7 805.5 805.5 803.9 802.3 805.0 805.0 809.5 809.5 803.5 798.0 DAY 21 7 24 21 19 26 11 30 3 25 22 15 MEAN QNH PRESSURE IN HPA 1017.3 1018.8 1017.7 1020.3 1018.9 1017.2 1018.0 1019.0 1019.8 1023.1 1023.6 1020.4 1019.5 MAX. QNH PRESSURE IN HPA 1027.1 1025.9 1023.3 1024.9 1023.5 1022.1 1025.1 1022.3 1025.7 1026.0 1028.6 1027.0 1028.6 DAY 30 10 27 2 7 13 30 23 29 16 11 4 MIN. QNH PRESSURE IN HPA 1005.4 1007.5 1006.3 1014.5 1014.5 1012.5 1010.6 1013.9 1013.9 1019.3 1019.3 1012.0 1005.4 DAY 21 7 24 21 19 26 11 30 3 25 22 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 806.9 808.1 806.9 809.4 808.2 806.7 807.3 807.9 808.8 811.7 812.2 809.9 808.7 MAX. QFE PRESSURE IN HPA 815.7 814.6 811.7 812.6 811.7 810.2 813.5 810.6 816.0 814.0 816.3 815.0 816.3 DAY 30 10 3 2 7 13 30 8 29 5 11 29 MIN. QFE PRESSURE IN HPA 797.0 800.1 796.7 804.9 804.4 803.2 801.5 803.8 803.6 808.3 808.6 803.9 796.7 DAY 21 7 24 21 19 26 10 30 2 2 22 15 MEAN QNH PRESSURE IN HPA 1016.1 1017.6 1016.1 1019.2 1017.7 1015.9 1016.7 1017.4 1018.5 1021.9 1022.5 1019.7 1018.3 MAX. QNH PRESSURE IN HPA 1026.8 1025.4 1021.9 1023.0 1021.9 1020.1 1024.1 1020.6 1027.1 1024.7 1027.5 1025.9 1027.5 DAY 30 10 3 2 7 13 30 8 29 5 11 29 MIN. QNH PRESSURE IN HPA 1004.2 1007.9 1003.8 1013.7 1013.1 1011.7 1009.6 1012.4 1012.2 1017.8 1018.2 1012.5 1003.8 DAY 21 7 24 21 19 26 10 30 2 2 22 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 807.5 808.5 807.3 809.5 808.2 806.4 807.0 807.8 808.9 812.1 812.6 810.4 808.9 MAX. QFE PRESSURE IN HPA 816.0 815.1 812.2 812.6 812.4 810.1 813.1 810.5 813.2 814.6 816.8 815.1 816.8 DAY 30 10 3 4 5 13 30 23 29 5 11 29 MIN. QFE PRESSURE IN HPA 799.6 799.1 798.0 805.2 804.0 803.3 801.1 803.8 803.8 809.0 808.8 805.1 798.0 DAY 21 6 24 9 19 25 10 30 2 1 21 11 MEAN QNH PRESSURE IN HPA 1016.9 1018.0 1016.6 1019.3 1017.7 1015.6 1016.3 1017.2 1018.6 1022.4 1023.0 1020.4 1018.5 MAX. QNH PRESSURE IN HPA 1027.1 1026.0 1022.5 1023.0 1022.8 1020.0 1023.6 1020.5 1023.7 1025.4 1028.1 1026.0 1028.1 DAY 30 10 3 4 5 13 30 23 29 5 11 29 MIN. QNH PRESSURE IN HPA 1007.3 1006.7 1005.4 1014.1 1012.7 1011.8 1009.2 1012.4 1012.4 1018.7 1018.4 1014.0 1005.4 DAY 21 6 24 9 19 25 10 30 2 1 21 11 MEAN QFF PRESSURE IN HPA 1021.9 1023.1 1015.7 1011.5 1006.5 1000.7 998.8 1000.2 1005.6 1015.7 1022.0 1022.7 1012.0 MAX. QFF PRESSURE IN HPA 1040.8 1040.8 1025.1 1018.2 1013.9 1011.2 1007.4 1005.2 1012.1 1021.6 1028.4 1035.9 1040.8 DAY 31 10 3 4 6 13 30 8 29 15 11 28 MIN. QFF PRESSURE IN HPA 1008.9 1010.1 1001.8 1005.4 1001.0 995.7 990.1 995.8 998.9 1010.9 1017.1 1014.4 990.1 DAY 19 6 23 21 30 24 10 3 2 22 1 21 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.8 1.7 9.7 14.3 18.5 24.2 25.9 27.3 21.6 15.4 7.8 4.7 14.2 MINIMUN AIR TEMPERATURE (C) -5.8 -3.6 2.6 6.0 9.4 12.9 16.1 17.4 12.5 7.7 1.5 -0.3 6.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 3 0 0 0 0 5 DAYS WITH MINIMUM TEMP. <=-4 21 11 1 0 0 0 0 0 0 0 3 4 40 DAYS WITH FREEZING MIN.<= 0 31 26 10 0 0 0 0 0 0 0 12 16 95 TEMPERATURE RECORDS LOWEST(C) -19.2 -11.0 -4.0 0.4 3.4 6.6 12.6 13.0 8.2 1.8 -9.6 -8.4 -19.2 DAY 28 12 12 13 6 13 21 12 21 27 20 22 MAXIMUM AIR TEMPERATURE (C) 2.8 5.3 14.2 19.0 23.1 29.5 31.7 32.6 27.0 20.1 12.0 8.4 18.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 14 26 27 4 0 0 0 71 DAYS WITH MAXIMUM TEMP. <= 0 8 1 0 0 0 0 0 0 0 0 1 0 10 TEMPERATURE RECORDS HIGHEST(C) 10.8 13.6 21.2 23.6 28.4 35.0 34.4 36.2 30.4 26.0 20.8 14.2 36.2 DAY 17 28 31 5 15 24 5 4 4 5 5 29 DIF. BETWEEN (MAX.-MIN.) (C) 8.6 8.9 11.6 13.0 13.7 16.6 15.6 15.2 14.5 12.4 10.5 8.7 12.4 MEAN DAILY TEMP. (MDT) (C) -1.5 0.8 8.4 12.5 16.3 21.2 23.9 25.0 19.7 13.9 6.8 4.0 12.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 1.8 45.2 95.9 125.1 7.3 0.0 0.0 0.0 275.3 HEATING DEG. DAYS(BASE 18 0C) 604.7 480.9 298.8 164.3 72.8 11.6 0.0 0.0 6.6 128.2 337.2 432.7 2537.8 DEWPOINT (MEAN C) -6.4 -5.1 -4.7 -3.1 -4.3 -2.0 3.2 -0.8 -0.5 -2.2 -3.7 -3.1 -2.7 MIXING RATIO (G/KG) 3.06 3.32 3.48 3.97 3.73 4.40 6.32 4.69 4.80 4.31 3.75 3.97 4.15 VAPOUR PRESSURE (HPA) 3.96 4.30 4.50 5.14 4.81 5.66 8.11 6.06 6.21 5.59 4.86 5.15 5.36 SATURATION DEF. (HPA) 2.14 2.88 8.20 11.88 17.46 26.28 26.94 31.85 20.69 12.69 6.46 3.66 14.26 RELATIVE HUMIDITY (MEAN %) 70 65 41 35 26 22 28 19 27 36 49 61 40 RELATIVE HUMIDITY (MAX. %) 82 78 61 56 45 40 48 34 44 56 66 75 57 RELATIVE HUMIDITY (MIN. %) 58 51 28 21 15 12 15 10 17 22 35 48 28 RELATIVE HUMIDITY (MEAN% 03UTC) 77 75 60 54 43 39 48 34 44 55 61 72 55 RELATIVE HUMIDITY (MEAN% 09UTC) 66 60 33 26 21 16 23 14 21 29 44 55 34 RELATIVE HUMIDITY (MEAN% 15UTC) 70 64 36 30 20 14 19 12 20 29 49 59 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 19.6 19.0 21.2 25.3 7.9 5.2 25.0 0.0 10.5 7.3 46.6 34.4 222.0 DAYS WITH PRECIPITATION >=10 0 0 1 1 0 0 1 0 0 0 2 1 6 DAYS WITH PRECIPITATION >= 5 1 2 1 1 1 0 2 0 0 0 4 2 14 DAYS WITH PRECIPITATION >= 1 5 6 4 3 1 2 3 0 3 3 7 6 43 DAYS WITH PRECIPITATION 10 8 7 7 5 4 3 1 7 8 8 13 81 GREATEST DAILY PRECIPITATION 5.5 8.0 14.0 19.0 6.0 3.0 18.0 0.0 4.5 4.0 12.0 15.0 19.0 DAY 26 18 10 9 2 13 19 ** 22 1 12 2 DAY WITH THUNDER STORM 0 0 0 2 1 0 1 0 3 1 2 0 10 DAYS WITH SNOW OR SLEET 8 7 1 0 0 0 0 0 0 0 1 2 19 DAYS WITH DUST 0 2 1 2 0 0 0 0 0 0 0 0 5 WIND DIRECTION (PREVAILING) 225 225 225 225 225 270 135 270 270 270 225 225 225 PREVAILING WIND SPEED(KNOTS) 9.3 15.5 10.9 13.7 13.4 10.4 9.2 11.5 9.6 12.1 12.5 12.6 12.4 PREVAILING WIND PERCENT 9.7 27.1 22.6 26.7 31.6 16.7 14.8 18.1 18.0 27.7 33.3 34.2 21.0 CALMS PERCENT OF WIND 71.6 40.7 34.8 34.7 31.6 42.0 45.8 41.9 45.3 35.5 48.7 42.6 43.0 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 185 228 259 249 246 247 169 258 261 253 232 230 242 VECTOR WIND MAGNITUDE(KNOTS) 1.2 5.4 4.5 6.1 6.6 2.1 1.2 2.8 2.4 4.9 5.0 5.3 3.8 WIND STEADINESES (MEAN %) 44.4 71.1 67.2 81.3 79.5 38.9 24.5 47.5 47.1 71.0 87.7 86.9 62.3 WIND SPEED (MEAN KNOTS) 2.7 7.6 6.7 7.5 8.3 5.4 4.9 5.9 5.1 6.9 5.7 6.1 6.1 FASTEST WIND DIRECTION 250 220 230 270 220 250 240 40 220 230 210 230 220 FASTEST WIND SPEED (KNOTS) 23 39 31 29 29 21 19 21 21 25 31 31 39 DAY 14 21 3 15 16 27 6 11 15 6 22 20 DAYS WITH SKY CLEAR (0-2)/8 12 13 14 13 21 27 25 28 24 21 13 11 222 DAYS WITH P.CLOUDY (3-6)/8 11 9 9 14 7 2 6 3 6 8 13 13 101 DAYS WITH CLOUDY (7-8)/8 8 6 8 3 3 1 0 0 0 2 4 7 42 DAYS WITH VISIBILITY =< 2 KM 7 4 0 0 0 0 0 0 0 0 2 4 17 DURATION OF SUNSHINE HOURS 161.1 196.7 249.1 281.4 347.2 381.5 362.2 359.5 311.4 277.8 191.4 158.5 3277.8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 810.7 808.6 809.2 809.6 808.2 807.1 806.8 809.6 811.2 812.7 811.5 811.5 809.7 MAX. QFE PRESSURE IN HPA 814.6 815.4 817.6 817.7 812.8 813.2 812.3 813.2 816.0 819.0 818.7 817.2 819.0 DAY-HOUR 10- 6 12- 6 1- 6 1- 6 14- 6 2- 6 28- 6 5- 6 23- 6 9- 6 2- 6 9- 6 MIN. QFE PRESSURE IN HPA 804.8 794.7 797.2 803.8 802.5 801.0 799.4 805.3 806.8 807.8 796.0 803.2 794.7 DAY-HOUR 26- 3 21- 6 25-12 12-12 8-15 17-15 17-15 27-12 5-12 25-12 18- 9 5- 3 MEAN QNH PRESSURE IN HPA 1020.7 1018.2 1018.9 1019.4 1017.7 1016.4 1016.0 1019.4 1021.3 1023.2 1021.7 1021.7 1019.6 MAX. QNH PRESSURE IN HPA 1025.4 1026.4 1029.0 1029.2 1023.3 1023.7 1022.7 1023.7 1027.1 1030.7 1030.4 1028.6 1030.7 DAY-HOUR 10- 6 12- 6 1- 6 1- 6 14- 6 2- 6 28- 6 5- 6 23- 6 9- 6 2- 6 9- 6 MIN. QNH PRESSURE IN HPA 1013.6 1001.4 1004.4 1012.4 1010.8 1009.0 1007.1 1014.2 1016.0 1017.2 1003.0 1011.7 1001.4 DAY-HOUR 26- 3 21- 6 25-12 12-12 8-15 17-15 17-15 27-12 5-12 25-12 18- 9 5- 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 810.4 808.3 809.2 809.8 808.6 807.8 807.5 810.2 811.5 812.8 811.5 811.5 809.9 MAX. QFE PRESSURE IN HPA 813.9 814.4 816.4 817.0 812.2 812.6 811.9 813.0 814.9 818.2 817.3 816.3 818.2 DAY 10 12 1 2 14 2 28 15 22 9 2 9 MIN. QFE PRESSURE IN HPA 804.8 795.1 797.6 804.4 802.8 802.5 803.2 806.4 808.5 808.4 797.2 803.2 795.1 DAY 26 21 25 26 9 17 18 27 6 26 18 5 MEAN QNH PRESSURE IN HPA 1020.4 1017.9 1019.0 1019.6 1018.2 1017.2 1016.9 1020.1 1021.7 1023.3 1021.7 1021.7 1019.8 MAX. QNH PRESSURE IN HPA 1024.6 1025.2 1027.6 1028.3 1022.5 1023.0 1022.2 1023.5 1025.8 1029.8 1028.7 1027.5 1029.8 DAY 10 12 1 2 14 2 28 15 22 9 2 9 MIN. QNH PRESSURE IN HPA 1013.6 1001.9 1004.9 1013.1 1011.2 1010.8 1011.7 1015.5 1018.1 1018.0 1004.4 1011.7 1001.9 DAY 26 21 25 26 9 17 18 27 6 26 18 5 MEAN QFF PRESSURE IN HPA 1024.6 1020.0 1014.9 1012.2 1007.4 1002.2 1000.1 1002.8 1008.8 1014.6 1019.0 1021.1 1012.3 MAX. QFF PRESSURE IN HPA 1037.9 1032.5 1026.0 1021.0 1012.9 1010.8 1006.1 1008.5 1016.0 1021.7 1033.0 1031.6 1037.9 DAY 28 12 1 2 1 13 22 12 22 9 20 22 MIN. QFF PRESSURE IN HPA 1017.1 1000.1 1000.9 1004.0 999.5 996.0 995.2 998.5 1002.8 1007.3 999.1 1008.3 995.2 DAY 18 21 25 26 30 18 11 27 5 6 18 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 811.3 809.2 810.1 810.5 809.0 808.0 807.8 810.7 812.2 813.7 812.5 812.4 810.6 MAX. QFE PRESSURE IN HPA 814.6 815.4 817.6 817.7 812.8 813.2 812.3 813.2 816.0 819.0 818.7 817.2 819.0 DAY 10 12 1 1 14 2 28 5 23 9 2 9 MIN. QFE PRESSURE IN HPA 805.7 794.7 798.6 804.8 803.1 802.6 803.6 807.3 809.0 810.3 797.6 804.3 794.7 DAY 26 21 25 26 9 17 18 24 6 26 18 5 MEAN QNH PRESSURE IN HPA 1021.4 1018.9 1020.0 1020.5 1018.7 1017.5 1017.3 1020.7 1022.6 1024.4 1022.9 1022.8 1020.6 MAX. QNH PRESSURE IN HPA 1025.4 1026.4 1029.0 1029.2 1023.3 1023.7 1022.7 1023.7 1027.1 1030.7 1030.4 1028.6 1030.7 DAY 10 12 1 1 14 2 28 5 23 9 2 9 MIN. QNH PRESSURE IN HPA 1014.7 1001.4 1006.1 1013.6 1011.6 1011.0 1012.2 1016.6 1018.7 1020.2 1004.9 1013.0 1001.4 DAY 26 21 25 26 9 17 18 24 6 26 18 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 811.0 809.0 809.6 809.8 808.6 807.3 807.1 810.0 811.6 813.0 811.7 811.6 810.0 MAX. QFE PRESSURE IN HPA 814.4 815.3 817.0 817.6 812.2 812.2 811.8 813.1 815.6 818.8 817.3 816.4 818.8 DAY 9 12 1 1 14 2 28 14 23 9 2 9 MIN. QFE PRESSURE IN HPA 805.7 795.7 798.4 804.3 803.3 802.2 802.2 806.5 808.3 809.1 796.0 803.7 795.7 DAY 26 21 25 12 9 17 17 27 5 22 18 5 MEAN QNH PRESSURE IN HPA 1021.1 1018.7 1019.4 1019.7 1018.1 1016.6 1016.4 1019.9 1021.8 1023.5 1022.0 1021.8 1019.9 MAX. QNH PRESSURE IN HPA 1025.2 1026.3 1028.3 1029.0 1022.5 1022.5 1022.1 1023.6 1026.6 1030.5 1028.7 1027.6 1030.5 DAY 9 12 1 1 14 2 28 14 23 9 2 9 MIN. QNH PRESSURE IN HPA 1014.7 1002.6 1005.9 1013.0 1011.8 1010.5 1010.5 1015.7 1017.8 1018.8 1003.0 1012.3 1002.6 DAY 26 21 25 12 9 17 17 27 5 22 18 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 810.1 808.0 808.4 809.0 807.5 806.3 805.9 808.8 810.3 811.9 810.7 810.8 809.0 MAX. QFE PRESSURE IN HPA 813.8 814.2 815.6 816.4 811.0 811.7 810.8 811.7 814.1 817.4 816.8 815.9 817.4 DAY 9 28 1 1 13 3 29 14 22 9 4 9 MIN. QFE PRESSURE IN HPA 805.0 796.4 797.2 803.8 803.0 801.4 800.4 805.3 806.8 807.8 796.2 803.8 796.2 DAY 19 21 25 12 8 17 17 27 5 25 18 5 MEAN QNH PRESSURE IN HPA 1020.0 1017.5 1017.9 1018.6 1016.9 1015.4 1015.0 1018.4 1020.2 1022.2 1020.8 1020.8 1018.7 MAX. QNH PRESSURE IN HPA 1024.5 1024.9 1026.6 1027.6 1021.1 1021.9 1020.8 1021.9 1024.8 1028.8 1028.1 1027.0 1028.8 DAY 9 28 1 1 13 3 29 14 22 9 4 9 MIN. QNH PRESSURE IN HPA 1013.9 1003.5 1004.4 1012.4 1011.4 1009.5 1008.3 1014.2 1016.0 1017.2 1003.2 1012.4 1003.2 DAY 19 21 25 12 8 17 17 27 5 25 18 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 810.5 808.3 808.7 809.1 807.5 806.1 805.7 808.5 810.3 812.1 811.3 811.4 809.1 MAX. QFE PRESSURE IN HPA 814.5 814.6 815.8 816.5 811.6 811.0 810.0 811.4 814.6 817.2 817.2 816.5 817.2 DAY 9 12 1 1 15 1 28 14 24 9 14 9 MIN. QFE PRESSURE IN HPA 805.9 797.6 797.4 804.4 802.5 801.0 799.4 805.3 806.8 807.8 798.6 804.9 797.4 DAY 19 21 25 12 8 17 17 27 5 25 18 4 MEAN QNH PRESSURE IN HPA 1020.5 1017.8 1018.3 1018.8 1016.8 1015.2 1014.7 1018.1 1020.3 1022.5 1021.5 1021.5 1018.8 MAX. QNH PRESSURE IN HPA 1025.3 1025.4 1026.9 1027.7 1021.8 1021.1 1019.9 1021.6 1025.4 1028.6 1028.6 1027.7 1028.6 DAY 9 12 1 1 15 1 28 14 24 9 14 9 MIN. QNH PRESSURE IN HPA 1014.9 1004.9 1004.7 1013.1 1010.8 1009.0 1007.1 1014.2 1016.0 1017.2 1006.1 1013.7 1004.7 DAY 19 21 25 12 8 17 17 27 5 25 18 4 MEAN QFF PRESSURE IN HPA 1024.7 1019.7 1014.1 1011.4 1006.0 1000.3 998.0 1000.9 1007.5 1014.0 1018.8 1020.9 1011.4 MAX. QFF PRESSURE IN HPA 1038.7 1032.0 1025.6 1019.8 1012.0 1009.2 1004.8 1004.7 1015.4 1019.9 1031.0 1032.1 1038.7 DAY 28 12 1 1 5 1 21 12 24 9 20 22 MIN. QFF PRESSURE IN HPA 1018.6 1007.2 1001.3 1005.5 996.5 994.4 990.5 997.6 1000.5 1006.9 1004.5 1011.4 990.5 DAY 19 21 25 12 29 29 17 27 4 6 17 19 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 GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -3.3 1.5 8.6 9.6 15.8 21.5 24.5 24.5 21.6 16.3 5.8 -0.3 12.2 MINIMUN AIR TEMPERATURE (C) -8.2 -3.8 1.5 5.1 8.9 13.7 16.1 15.5 12.4 9.2 1.4 -3.5 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 20 13 2 0 0 0 0 0 0 0 2 13 50 DAYS WITH FREEZING MIN.<= 0 26 24 11 0 0 0 0 0 0 0 12 26 99 TEMPERATURE RECORDS LOWEST(C) -19.8 -11.8 -5.6 0.2 3.2 7.4 12.6 10.5 9.5 3.5 -5.5 -17.3 -19.8 DAY 25 4 1 1 14 8 1 31 10 23 30 14 MAXIMUM AIR TEMPERATURE (C) 0.5 5.3 13.2 14.4 21.8 27.8 31.6 32.5 29.3 22.7 10.6 3.1 17.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 7 27 30 10 0 0 0 74 DAYS WITH MAXIMUM TEMP. <= 0 18 3 0 0 0 0 0 0 0 0 0 5 26 TEMPERATURE RECORDS HIGHEST(C) 12.0 11.0 19.8 23.4 27.4 31.8 34.6 36.0 33.0 28.0 17.8 10.4 36.0 DAY 1 23 13 28 28 29 21 10 2 1 11 8 DIF. BETWEEN (MAX.-MIN.) (C) 8.7 9.1 11.7 9.3 12.9 14.1 15.5 17.0 16.9 13.5 9.2 6.6 12.0 MEAN DAILY TEMP. (MDT) (C) -3.9 0.8 7.3 9.7 15.4 20.8 23.8 24.0 20.8 15.9 6.0 -0.2 11.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.9 24.8 88.3 93.8 17.4 0.0 0.0 0.0 225.3 HEATING DEG. DAYS(BASE 18 0C) 677.8 482.7 330.7 247.7 95.9 3.6 0.0 0.0 0.0 76.7 359.5 563.3 2838.0 DEWPOINT (MEAN C) -7.5 -5.8 -5.8 -0.2 -1.5 -1.8 2.2 -0.3 -3.5 -2.3 -1.2 -4.7 -2.7 MIXING RATIO (G/KG) 2.88 3.15 3.29 4.87 4.40 4.26 5.83 4.94 3.76 4.12 4.50 3.49 4.12 VAPOUR PRESSURE (HPA) 3.72 4.08 4.25 6.27 5.68 5.49 7.49 6.35 4.88 5.35 5.83 4.50 5.33 SATURATION DEF. (HPA) 1.59 3.06 7.53 6.19 13.21 21.12 24.44 25.86 22.11 14.07 3.80 1.75 12.06 RELATIVE HUMIDITY (MEAN %) 75 62 41 55 36 23 27 23 20 32 65 74 44 RELATIVE HUMIDITY (MAX. %) 84 75 61 72 57 36 45 39 33 46 84 87 60 RELATIVE HUMIDITY (MIN. %) 67 51 28 38 19 13 13 9 11 20 45 59 31 RELATIVE HUMIDITY (MEAN% 03UTC) 80 71 58 66 53 35 43 38 32 44 77 79 56 RELATIVE HUMIDITY (MEAN% 09UTC) 73 59 34 47 26 17 18 18 15 23 54 67 38 RELATIVE HUMIDITY (MEAN% 15UTC) 76 59 37 49 25 15 14 11 14 27 60 72 38 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 44.6 26.5 39.0 95.2 8.8 0.0 0.0 0.0 0.0 5.2 51.1 73.2 343.6 DAYS WITH PRECIPITATION >=10 2 1 1 4 0 0 0 0 0 0 1 1 10 DAYS WITH PRECIPITATION >= 5 4 1 2 5 0 0 0 0 0 1 5 4 22 DAYS WITH PRECIPITATION >= 1 8 3 6 9 3 0 0 0 0 1 9 7 46 DAYS WITH PRECIPITATION 16 8 10 18 6 0 1 0 0 3 11 15 88 GREATEST DAILY PRECIPITATION 11.0 21.0 17.0 27.0 4.4 0.0 0.0 0.0 0.0 5.0 13.0 42.0 42.0 DAY 7 14 18 19 9 ** ** ** ** 31 12 9 DAY WITH THUNDER STORM 0 0 0 3 2 1 0 1 0 0 1 2 10 DAYS WITH SNOW OR SLEET 10 4 2 1 0 0 0 0 0 0 3 13 33 DAYS WITH DUST 0 1 1 2 5 0 2 2 2 2 0 0 17 WIND DIRECTION (PREVAILING) 225 270 225 225 270 270 270 270 270 270 225 225 225 PREVAILING WIND SPEED(KNOTS) 11.8 10.6 13.0 12.7 10.9 10.8 7.7 9.2 8.2 8.1 10.0 12.7 11.9 PREVAILING WIND PERCENT 17.4 19.3 38.1 44.8 27.8 23.8 14.9 9.3 12.5 18.1 12.1 29.4 19.3 CALMS PERCENT OF WIND 64.5 55.0 32.3 15.5 31.9 36.7 53.6 56.9 61.3 59.7 60.8 41.1 47.1 NO. OF WIND OBSERVATION 155 140 155 239 248 240 248 248 240 248 240 248 2649 VECTOR WIND DIRECTION (MEAN) 229 240 232 242 250 248 228 0 261 245 235 237 241 VECTOR WIND MAGNITUDE(KNOTS) 2.9 4.3 6.4 8.4 5.9 3.6 1.2 0.0 1.3 2.6 1.5 5.2 3.6 WIND STEADINESES (MEAN %) 78.4 79.6 80.0 86.6 80.8 59.0 34.3 0.0 43.3 81.2 51.7 82.5 69.2 WIND SPEED (MEAN KNOTS) 3.7 5.4 8.0 9.7 7.3 6.1 3.5 3.6 3.0 3.2 2.9 6.3 5.2 FASTEST WIND DIRECTION 280 230 230 240 270 270 30 210 70 230 240 220 240 FASTEST WIND SPEED (KNOTS) 29 31 31 35 31 25 21 17 17 21 29 31 35 DAY 31 12 27 7 25 2 8 7 3 5 12 20 DAYS WITH SKY CLEAR (0-2)/8 13 15 13 3 18 27 26 31 27 15 13 5 206 DAYS WITH P.CLOUDY (3-6)/8 11 8 15 15 12 3 5 0 3 12 8 15 107 DAYS WITH CLOUDY (7-8)/8 7 5 3 12 1 0 0 0 0 4 9 11 52 DAYS WITH VISIBILITY =< 2 KM 9 2 1 1 1 0 0 0 0 0 4 5 23 DURATION OF SUNSHINE HOURS 136.9 209.9 247.7 189.4 341.2 380.9 369.6 377.5 331.0 231.2 186.3 133.6 3135.2 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 809.6 810.7 808.9 807.3 808.7 808.2 808.3 807.8 812.4 813.7 813.4 808.8 809.8 MAX. QFE PRESSURE IN HPA 817.5 819.8 818.6 814.6 813.7 813.0 812.7 812.7 817.0 819.6 820.4 817.6 820.4 DAY-HOUR 27- 6 6- 6 11- 6 1- 6 17- 6 25- 6 29- 6 31- 6 21- 9 10- 6 18- 6 3- 6 MIN. QFE PRESSURE IN HPA 801.1 801.8 799.5 797.8 804.1 802.1 802.5 802.9 807.2 807.6 806.2 794.5 794.5 DAY-HOUR 8- 3 25- 3 22- 9 3-12 4- 9 20-12 24-15 7-12 10-12 21-12 25-12 21-12 MEAN QNH PRESSURE IN HPA 1019.3 1020.7 1018.5 1016.6 1018.3 1017.7 1017.9 1017.3 1022.8 1024.3 1024.0 1018.4 1019.6 MAX. QNH PRESSURE IN HPA 1028.9 1031.7 1030.2 1025.4 1024.3 1023.5 1023.1 1023.1 1028.3 1031.5 1032.4 1029.0 1032.4 DAY-HOUR 27- 6 6- 6 11- 6 1- 6 17- 6 25- 6 29- 6 31- 6 21- 9 10- 6 18- 6 3- 6 MIN. QNH PRESSURE IN HPA 1009.2 1010.0 1007.2 1005.2 1012.8 1010.4 1010.8 1011.3 1016.5 1017.0 1015.3 1001.2 1001.2 DAY-HOUR 8- 3 25- 3 22- 9 3-12 4- 9 20-12 24-15 7-12 10-12 21-12 25-12 21-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.4 1007.6 1002.7 1000.6 1000.0 1007.9 1013.3 1021.2 1020.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1023.1 1014.8 1010.5 1007.3 1009.1 1014.1 1020.6 1032.6 1040.3 ****** DAY-HOUR **-** **-** **-** 1- 3 17- 3 8- 3 29- 6 31- 6 21- 6 27- 6 18- 6 14-18 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1000.3 1000.5 995.6 992.7 993.1 1001.2 1007.4 1008.0 999.9 ****** DAY-HOUR **-** **-** **-** 3- 6 24- 9 19-12 24- 9 15-12 5-12 13-12 12- 0 21-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 806.9 808.5 808.2 808.6 808.0 812.3 813.7 813.3 808.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 811.2 812.6 812.3 811.9 811.2 815.8 818.6 819.2 817.1 ****** DAY ** ** ** 27 17 25 29 31 21 10 18 3 MIN. QFE PRESSURE IN HPA ****** ****** ****** 797.8 805.6 803.6 804.0 804.4 808.8 808.9 807.5 796.9 ****** DAY ** ** ** 4 4 19 24 17 11 30 13 21 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1016.1 1018.1 1017.7 1018.2 1017.5 1022.7 1024.4 1023.8 1018.4 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1021.3 1023.0 1022.7 1022.2 1021.3 1026.9 1030.2 1031.0 1028.4 ****** DAY ** ** ** 27 17 25 29 31 21 10 18 3 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1005.2 1014.6 1012.2 1012.7 1013.1 1018.4 1018.6 1016.9 1004.1 ****** DAY ** ** ** 4 4 19 24 17 11 30 13 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1009.6 1007.1 1002.7 1000.8 999.8 1007.4 1012.6 1020.4 1020.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1015.9 1014.0 1009.0 1005.8 1006.2 1012.5 1018.0 1029.2 1035.3 ****** DAY ** ** ** 13 17 8 29 30 21 31 19 15 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1002.9 1001.0 995.7 996.0 993.3 1002.9 1007.8 1008.0 1001.7 ****** DAY ** ** ** 4 29 19 24 15 6 14 12 21 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 809.3 810.3 809.0 807.3 808.8 808.7 809.1 808.5 812.7 813.8 813.4 808.6 810.0 MAX. QFE PRESSURE IN HPA 816.3 819.5 817.8 813.6 813.2 812.8 812.5 812.1 816.1 818.9 819.0 817.1 819.5 DAY 27 6 11 1 17 25 29 30 21 10 18 3 MIN. QFE PRESSURE IN HPA 801.1 801.8 800.4 799.0 805.0 803.7 803.8 804.8 809.5 809.3 807.5 795.2 795.2 DAY 8 25 22 4 12 20 24 17 10 30 12 21 MEAN QNH PRESSURE IN HPA 1019.0 1020.3 1018.7 1016.6 1018.5 1018.3 1018.8 1018.0 1023.1 1024.5 1023.9 1018.2 1019.8 MAX. QNH PRESSURE IN HPA 1027.5 1031.3 1029.3 1024.2 1023.7 1023.3 1022.9 1022.4 1027.2 1030.6 1030.7 1028.4 1031.3 DAY 27 6 11 1 17 25 29 30 21 10 18 3 MIN. QNH PRESSURE IN HPA 1009.2 1010.0 1008.3 1006.6 1013.9 1012.3 1012.4 1013.6 1019.3 1019.0 1016.9 1002.0 1002.0 DAY 8 25 22 4 12 20 24 17 10 30 12 21 MEAN QFF PRESSURE IN HPA 1025.2 1022.6 1015.4 1011.2 1008.4 1003.7 1001.8 1001.2 1009.5 1014.6 1021.9 1020.8 1013.0 MAX. QFF PRESSURE IN HPA 1042.5 1039.9 1029.1 1023.1 1014.8 1010.5 1007.0 1008.8 1013.8 1019.0 1031.3 1036.4 1042.5 DAY 26 6 11 1 17 8 29 31 29 8 18 15 MIN. QFF PRESSURE IN HPA 1008.4 1006.6 1001.6 1003.2 1002.1 996.7 995.0 996.1 1005.5 1010.1 1008.0 1000.0 995.0 DAY 8 25 28 3 29 19 24 15 6 13 12 21 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 810.2 811.5 809.9 808.0 809.4 809.1 809.3 808.8 813.3 814.6 814.3 809.5 810.7 MAX. QFE PRESSURE IN HPA 817.5 819.8 818.6 814.6 813.7 813.0 812.7 812.7 816.9 819.6 820.4 817.6 820.4 DAY 27 6 11 1 17 25 29 31 21 10 18 3 MIN. QFE PRESSURE IN HPA 803.5 803.5 800.8 798.9 805.1 803.3 803.8 805.1 810.0 810.2 808.3 795.9 795.9 DAY 8 25 22 3 4 20 24 17 10 21 13 21 MEAN QNH PRESSURE IN HPA 1020.2 1021.6 1019.7 1017.4 1019.2 1018.8 1019.1 1018.5 1023.9 1025.5 1025.1 1019.3 1020.7 MAX. QNH PRESSURE IN HPA 1028.9 1031.7 1030.2 1025.4 1024.3 1023.5 1023.1 1023.1 1028.2 1031.5 1032.4 1029.0 1032.4 DAY 27 6 11 1 17 25 29 31 21 10 18 3 MIN. QNH PRESSURE IN HPA 1012.0 1012.0 1008.8 1006.5 1014.0 1011.8 1012.4 1014.0 1019.9 1020.1 1017.8 1002.9 1002.9 DAY 8 25 22 3 4 20 24 17 10 21 13 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1011.3 1008.4 1003.9 1001.8 1001.4 1009.0 1014.5 1022.5 1021.9 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1018.1 1014.7 1009.9 1007.3 1009.1 1014.1 1020.6 1032.6 1039.7 ****** DAY ** ** ** 13 17 4 29 31 21 27 18 14 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1000.3 1002.7 996.6 994.9 995.3 1004.7 1009.8 1010.6 1000.4 ****** DAY ** ** ** 3 29 19 24 15 4 14 12 21 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 809.8 811.2 809.2 807.5 808.8 808.3 808.4 808.0 812.6 813.8 813.6 808.8 810.0 MAX. QFE PRESSURE IN HPA 817.4 819.6 818.2 813.5 813.1 812.0 811.3 811.6 817.0 818.4 820.0 815.9 820.0 DAY 27 6 11 27 17 24 29 30 21 10 18 3 MIN. QFE PRESSURE IN HPA 803.1 803.5 799.5 798.5 804.1 802.9 802.6 804.1 808.5 808.6 807.3 795.3 795.3 DAY 7 25 22 3 4 20 24 7 10 21 25 21 MEAN QNH PRESSURE IN HPA 1019.7 1021.4 1018.9 1016.9 1018.4 1017.9 1017.9 1017.5 1023.0 1024.4 1024.2 1018.5 1019.9 MAX. QNH PRESSURE IN HPA 1028.8 1031.5 1029.8 1024.1 1023.6 1022.3 1021.5 1021.8 1028.3 1030.0 1031.9 1027.0 1031.9 DAY 27 6 11 27 17 24 29 30 21 10 18 3 MIN. QNH PRESSURE IN HPA 1011.6 1012.0 1007.2 1006.0 1012.8 1011.3 1011.0 1012.8 1018.1 1018.2 1016.6 1002.2 1002.2 DAY 7 25 22 3 4 20 24 7 10 21 25 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.2 1007.4 1002.7 1000.5 999.7 1007.4 1012.7 1020.8 1020.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1016.6 1014.1 1008.7 1005.1 1006.7 1013.8 1017.5 1030.5 1038.1 ****** DAY ** ** ** 13 17 8 30 30 21 7 18 14 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1003.3 1000.5 996.5 992.7 993.3 1002.8 1007.8 1011.6 1000.8 ****** DAY ** ** ** 3 24 20 24 15 6 14 12 21 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 809.1 810.1 808.1 806.6 807.9 807.3 807.3 806.7 811.4 812.7 812.6 808.1 809.0 MAX. QFE PRESSURE IN HPA 816.5 818.0 816.6 812.4 812.1 811.0 809.9 810.4 816.6 817.2 818.9 815.4 818.9 DAY 25 6 10 1 17 24 29 30 21 10 18 3 MIN. QFE PRESSURE IN HPA 801.3 803.3 800.0 797.8 804.5 802.1 802.6 802.9 807.2 807.6 806.2 794.5 794.5 DAY 7 25 22 3 4 20 24 7 10 21 25 21 MEAN QNH PRESSURE IN HPA 1018.7 1020.0 1017.6 1015.8 1017.4 1016.6 1016.6 1016.0 1021.6 1023.2 1023.0 1017.5 1018.7 MAX. QNH PRESSURE IN HPA 1027.7 1029.5 1027.8 1022.8 1022.4 1021.1 1019.8 1020.4 1027.8 1028.6 1030.6 1026.4 1030.6 DAY 25 6 10 1 17 24 29 30 21 10 18 3 MIN. QNH PRESSURE IN HPA 1009.4 1011.8 1007.8 1005.2 1013.3 1010.4 1011.0 1011.3 1016.5 1017.0 1015.3 1001.2 1001.2 DAY 7 25 22 3 4 20 24 7 10 21 25 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1009.1 1006.4 1001.6 999.3 998.5 1006.3 1011.6 1019.7 1019.3 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1014.8 1012.5 1007.0 1003.3 1005.9 1013.9 1018.9 1029.0 1037.1 ****** DAY ** ** ** 13 17 25 29 30 21 31 29 14 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1001.0 1001.0 995.6 993.9 993.1 1001.2 1007.4 1010.9 999.9 ****** DAY ** ** ** 3 24 19 24 15 5 13 11 21 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 809.4 810.3 808.3 807.0 808.0 807.1 807.0 806.7 811.6 813.0 813.1 808.6 809.2 MAX. QFE PRESSURE IN HPA 816.6 818.0 816.7 812.3 812.1 810.7 810.0 810.3 816.2 817.2 819.2 816.0 819.2 DAY 25 5 6 1 17 24 29 29 21 10 18 2 MIN. QFE PRESSURE IN HPA 801.7 803.2 800.6 798.7 804.9 802.2 802.5 803.1 807.9 808.0 807.0 796.1 796.1 DAY 7 26 22 3 4 20 24 7 10 21 25 21 MEAN QNH PRESSURE IN HPA 1019.2 1020.2 1017.8 1016.2 1017.5 1016.4 1016.3 1015.9 1021.8 1023.4 1023.6 1018.2 1018.9 MAX. QNH PRESSURE IN HPA 1027.8 1029.5 1028.0 1022.7 1022.4 1020.7 1019.9 1020.2 1027.4 1028.6 1031.0 1027.1 1031.0 DAY 25 5 6 1 17 24 29 29 21 10 18 2 MIN. QNH PRESSURE IN HPA 1009.9 1011.7 1008.6 1006.3 1013.7 1010.5 1010.8 1011.6 1017.4 1017.5 1016.3 1003.1 1003.1 DAY 7 26 22 3 4 20 24 7 10 21 25 21 MEAN QFF PRESSURE IN HPA 1025.4 1022.3 1014.5 1010.6 1007.4 1001.8 999.5 999.3 1008.3 1013.7 1021.6 1020.8 1012.1 MAX. QFF PRESSURE IN HPA 1044.4 1037.9 1027.9 1019.7 1012.6 1008.0 1004.2 1006.0 1013.2 1018.6 1031.1 1038.9 1044.4 DAY 25 5 10 1 17 7 29 29 21 31 18 14 MIN. QFF PRESSURE IN HPA 1005.9 1008.9 1004.8 1004.8 1002.6 995.8 994.0 994.0 1003.2 1008.4 1011.7 1002.9 994.0 DAY 7 25 28 3 29 18 24 14 7 13 11 21 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 807.7 808.9 808.3 808.3 807.9 812.7 813.9 813.6 809.1 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 813.6 812.8 812.6 811.7 811.5 816.7 818.5 819.7 817.0 ****** DAY ** ** ** 1 17 24 28 29 21 10 18 2 MIN. QFE PRESSURE IN HPA ****** ****** ****** 799.9 806.7 803.5 804.1 804.7 809.0 809.0 808.1 798.7 ****** DAY ** ** ** 3 12 20 24 15 10 21 12 21 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1017.1 1018.6 1017.9 1017.8 1017.3 1023.1 1024.6 1024.3 1018.8 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1024.2 1023.3 1023.0 1021.9 1021.7 1028.0 1030.1 1031.6 1028.3 ****** DAY ** ** ** 1 17 24 28 29 21 10 18 2 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1007.7 1015.9 1012.0 1012.8 1013.5 1018.7 1018.7 1017.6 1006.3 ****** DAY ** ** ** 3 12 20 24 15 10 21 12 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1011.2 1007.8 1003.0 1000.6 1000.5 1008.3 1013.8 1021.8 1021.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1019.3 1013.6 1009.9 1006.3 1006.8 1013.0 1018.0 1031.5 1040.3 ****** DAY ** ** ** 1 16 7 28 31 21 27 29 14 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1004.6 1001.7 996.5 995.6 995.1 1003.0 1008.5 1012.0 1004.9 ****** DAY ** ** ** 28 19 18 24 15 5 29 11 20 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 807.4 809.1 808.4 808.8 808.2 812.7 814.0 813.5 809.0 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 811.2 813.0 812.7 811.9 811.5 816.0 818.9 819.5 817.3 ****** DAY ** ** ** 1 17 24 28 29 20 10 18 2 MIN. QFE PRESSURE IN HPA ****** ****** ****** 798.9 806.7 803.5 804.1 804.9 808.7 809.4 808.0 798.0 ****** DAY ** ** ** 3 19 20 23 16 10 29 12 20 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1016.8 1018.9 1018.0 1018.4 1017.7 1023.1 1024.7 1024.1 1018.7 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1021.3 1023.5 1023.1 1022.2 1021.7 1027.1 1030.6 1031.3 1028.7 ****** DAY ** ** ** 1 17 24 28 29 20 10 18 2 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1006.5 1015.9 1012.0 1012.8 1013.7 1018.3 1019.2 1017.5 1005.4 ****** DAY ** ** ** 3 19 20 23 16 10 29 12 20 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.2 1007.7 1002.8 1000.7 1000.0 1007.6 1013.0 1020.8 1020.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1016.9 1014.2 1010.2 1005.5 1006.5 1012.3 1017.3 1030.6 1038.7 ****** DAY ** ** ** 5 13 7 29 29 20 7 29 14 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1003.7 1001.4 996.2 994.9 994.0 1002.7 1008.6 1009.3 1003.5 ****** DAY ** ** ** 28 28 18 23 14 5 29 11 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.3 0.6 3.8 11.6 15.0 21.3 25.7 25.2 20.3 16.1 5.6 0.9 12.1 MINIMUN AIR TEMPERATURE (C) -3.7 -2.8 -0.8 6.4 7.8 13.2 17.7 16.7 12.1 10.1 1.5 -2.8 6.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 1 0 0 0 0 3 DAYS WITH MINIMUM TEMP. <=-4 15 13 5 0 0 0 0 0 0 0 2 13 48 DAYS WITH FREEZING MIN.<= 0 24 20 18 2 1 0 0 0 0 0 10 21 96 TEMPERATURE RECORDS LOWEST(C) -13.1 -9.6 -10.6 -1.6 -0.3 7.3 13.0 14.4 8.0 6.0 -4.2 -11.0 -13.1 DAY 18 18 2 2 9 7 1 2 23 7 23 12 MAXIMUM AIR TEMPERATURE (C) 3.7 4.7 9.2 16.8 21.2 28.0 33.4 32.7 27.7 22.0 10.5 4.7 17.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 10 29 29 8 0 0 0 76 DAYS WITH MAXIMUM TEMP. <= 0 10 2 1 0 0 0 0 0 0 0 0 5 18 TEMPERATURE RECORDS HIGHEST(C) 13.8 9.8 16.0 23.8 25.6 32.2 36.5 36.1 32.4 26.0 17.0 12.2 36.5 DAY 12 24 25 9 22 23 13 13 3 11 5 18 DIF. BETWEEN (MAX.-MIN.) (C) 7.4 7.5 10.0 10.4 13.4 14.8 15.7 16.0 15.6 11.9 9.0 7.5 11.6 MEAN DAILY TEMP. (MDT) (C) -0.0 1.0 4.2 11.6 14.5 20.6 25.5 24.7 19.9 16.1 6.0 1.0 12.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 23.9 140.0 115.4 18.8 0.0 0.0 0.0 298.2 HEATING DEG. DAYS(BASE 18 0C) 559.0 477.3 426.7 194.6 108.4 7.6 0.0 0.0 8.6 61.0 360.1 528.2 2731.5 DEWPOINT (MEAN C) -6.0 -5.0 -4.0 -0.5 0.5 1.0 1.1 -0.4 -4.2 -1.0 -1.9 -3.3 -2.0 MIXING RATIO (G/KG) 3.11 3.33 3.64 4.80 5.14 5.29 5.53 4.84 3.64 4.65 4.23 3.83 4.34 VAPOUR PRESSURE (HPA) 4.03 4.30 4.69 6.19 6.64 6.80 7.09 6.24 4.71 6.02 5.49 4.97 5.60 SATURATION DEF. (HPA) 2.35 2.25 3.70 8.12 11.10 19.64 27.37 27.29 20.36 12.81 3.96 1.84 11.73 RELATIVE HUMIDITY (MEAN %) 71 68 60 49 41 29 24 21 22 35 62 75 46 RELATIVE HUMIDITY (MAX. %) 85 85 84 70 62 48 43 36 37 49 77 87 64 RELATIVE HUMIDITY (MIN. %) 57 50 37 30 25 15 10 10 10 23 46 62 31 RELATIVE HUMIDITY (MEAN% 03UTC) 76 74 73 63 58 47 42 35 37 47 72 82 59 RELATIVE HUMIDITY (MEAN% 09UTC) 66 61 47 39 29 22 18 16 15 27 52 68 38 RELATIVE HUMIDITY (MEAN% 15UTC) 70 66 51 43 31 17 10 11 13 29 58 76 40 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 29.3 36.9 65.9 32.2 10.0 0.1 0.0 0.0 0.0 25.3 49.6 41.2 290.5 DAYS WITH PRECIPITATION >=10 0 1 2 1 0 0 0 0 0 1 1 1 7 DAYS WITH PRECIPITATION >= 5 2 2 3 2 0 0 0 0 0 1 3 1 14 DAYS WITH PRECIPITATION >= 1 6 9 9 7 3 0 0 0 0 3 7 10 54 DAYS WITH PRECIPITATION 9 17 13 12 10 1 0 1 0 4 10 14 91 GREATEST DAILY PRECIPITATION 9.7 11.0 26.0 13.3 4.0 0.1 0.0 0.0 0.0 20.6 18.6 16.0 26.0 DAY 28 25 7 16 28 1 ** ** ** 30 11 6 DAY WITH THUNDER STORM 0 0 5 6 9 1 0 0 0 3 1 2 27 DAYS WITH SNOW OR SLEET 9 14 8 0 0 0 0 0 0 0 3 4 38 DAYS WITH DUST 1 3 6 9 6 7 9 0 4 2 0 0 47 WIND DIRECTION (PREVAILING) 225 225 225 225 225 270 270 270 270 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 11.5 13.9 12.0 13.8 11.4 8.7 8.1 8.6 10.1 12.1 13.6 13.4 12.2 PREVAILING WIND PERCENT 21.0 21.4 32.3 32.5 13.7 16.3 21.0 14.9 19.6 31.3 19.6 22.2 19.8 CALMS PERCENT OF WIND 62.1 44.6 37.5 40.8 56.9 59.6 53.2 46.4 44.6 40.7 54.2 46.8 49.0 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 243 240 248 2915 VECTOR WIND DIRECTION (MEAN) 241 222 228 228 239 261 255 226 239 230 221 203 231 VECTOR WIND MAGNITUDE(KNOTS) 3.5 2.0 5.5 5.7 2.1 2.7 2.6 0.9 2.7 5.7 3.5 3.7 3.3 WIND STEADINESES (MEAN %) 89.7 30.8 80.9 85.1 53.8 77.1 70.3 19.6 54.0 83.8 71.4 59.7 63.5 WIND SPEED (MEAN KNOTS) 3.9 6.5 6.8 6.7 3.9 3.5 3.7 4.6 5.0 6.8 4.9 6.2 5.2 FASTEST WIND DIRECTION 250 50 190 210 220 230 230 280 240 210 230 190 190 FASTEST WIND SPEED (KNOTS) 31 31 39 25 31 23 17 21 31 39 31 39 39 DAY 6 19 24 9 7 14 5 5 18 27 20 18 DAYS WITH SKY CLEAR (0-2)/8 9 8 12 4 16 28 31 29 30 20 12 10 209 DAYS WITH P.CLOUDY (3-6)/8 9 17 15 19 13 2 0 2 0 10 13 12 112 DAYS WITH CLOUDY (7-8)/8 13 3 4 7 2 0 0 0 0 1 5 9 44 DAYS WITH VISIBILITY =< 2 KM 8 3 2 1 0 0 0 0 0 0 3 8 25 DURATION OF SUNSHINE HOURS 153.7 187.0 240.7 214.9 302.1 366.0 388.8 366.3 333.5 265.8 195.0 148.9 3162.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 810.1 806.2 806.9 809.3 811.1 807.8 805.8 809.3 810.6 812.9 812.8 812.0 809.6 MAX. QFE PRESSURE IN HPA 818.0 813.8 816.0 818.0 816.5 812.2 812.7 812.8 816.1 819.0 820.7 819.9 820.7 DAY-HOUR 12- 6 6-18 2- 6 7-21 1- 6 6- 6 3- 6 9- 6 23- 6 15- 6 25- 6 11-18 MIN. QFE PRESSURE IN HPA 794.6 795.3 793.1 802.0 804.8 800.8 801.2 805.3 806.1 805.3 806.0 800.7 793.1 DAY-HOUR 28-12 19- 3 26- 6 27-18 29- 3 30-15 25-15 20-15 7-12 29- 0 9-12 6- 9 MEAN QNH PRESSURE IN HPA 1020.0 1015.3 1016.1 1019.1 1021.2 1017.2 1014.8 1019.0 1020.6 1023.4 1023.3 1022.2 1019.3 MAX. QNH PRESSURE IN HPA 1029.5 1024.5 1027.1 1029.5 1027.7 1022.5 1023.1 1023.3 1027.2 1030.7 1032.8 1031.8 1032.8 DAY-HOUR 12- 6 6-18 2- 6 7-21 1- 6 6- 6 3- 6 9- 6 23- 6 15- 6 25- 6 11-18 MIN. QNH PRESSURE IN HPA 1001.3 1002.2 999.5 1010.2 1013.6 1008.8 1009.3 1014.2 1015.2 1014.2 1015.1 1008.7 999.5 DAY-HOUR 28-12 19- 3 26- 6 27-18 29- 3 30-15 25-15 20-15 7-12 29- 0 9-12 6- 9 MEAN QFF PRESSURE IN HPA 1022.3 1016.6 1014.9 1011.6 1011.1 1002.3 996.6 1001.3 1006.6 1012.5 1020.6 1023.6 1011.7 MAX. QFF PRESSURE IN HPA 1030.4 1028.9 1035.3 1022.6 1024.1 1013.1 1006.8 1005.4 1017.1 1020.3 1034.3 1040.0 1040.0 DAY-HOUR 31- 9 28-18 2- 6 29- 6 1- 6 6- 6 3- 6 8- 3 23- 6 23- 3 25- 6 11-18 MIN. QFF PRESSURE IN HPA 1002.2 1001.4 994.6 999.4 1002.3 991.7 991.2 996.5 997.3 1002.6 1007.9 1006.5 991.2 DAY-HOUR 28-12 20- 6 26- 6 20-12 7-21 30-12 7-12 13-12 6-12 29- 0 9-12 18-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 810.0 805.9 806.6 808.9 811.2 808.1 805.9 809.4 810.6 812.7 812.6 811.7 809.5 MAX. QFE PRESSURE IN HPA 817.6 812.9 814.2 815.2 815.5 811.4 810.9 811.5 815.0 817.7 818.7 818.0 818.7 DAY 12 7 2 8 1 6 3 9 23 15 26 12 MIN. QFE PRESSURE IN HPA 800.0 795.5 797.9 802.8 805.0 803.2 802.2 807.0 807.0 805.3 806.9 803.9 795.5 DAY 29 19 13 21 29 30 1 1 7 29 20 6 MEAN QNH PRESSURE IN HPA 1019.9 1014.9 1015.8 1018.6 1021.3 1017.5 1015.0 1019.1 1020.6 1023.2 1023.0 1021.9 1019.2 MAX. QNH PRESSURE IN HPA 1029.0 1023.4 1024.9 1026.2 1026.5 1021.6 1021.0 1021.7 1025.9 1029.2 1030.4 1029.5 1030.4 DAY 12 7 2 8 1 6 3 9 23 15 26 12 MIN. QNH PRESSURE IN HPA 1007.8 1002.4 1005.3 1011.2 1013.9 1011.7 1010.5 1016.3 1016.3 1014.2 1016.1 1012.5 1002.4 DAY 29 19 13 21 29 30 1 1 7 29 20 6 MEAN QFF PRESSURE IN HPA 1021.6 1015.8 1014.1 1010.7 1011.1 1002.4 996.3 1000.9 1005.9 1011.6 1019.5 1022.7 1011.1 MAX. QFF PRESSURE IN HPA 1028.6 1025.2 1032.2 1020.1 1021.4 1009.8 1004.4 1004.1 1014.2 1018.1 1030.2 1037.8 1037.8 DAY 31 1 2 30 1 7 3 8 23 23 25 12 MIN. QFF PRESSURE IN HPA 1009.2 1002.5 1000.5 1002.0 1002.6 993.7 992.8 997.0 998.7 1002.6 1008.6 1007.9 992.8 DAY 29 20 26 21 29 30 8 14 1 29 9 19 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 809.8 805.9 806.8 809.3 811.4 808.4 806.4 809.9 811.0 813.0 812.8 811.7 809.7 MAX. QFE PRESSURE IN HPA 817.4 813.0 814.4 814.8 815.6 811.9 812.0 812.3 815.7 818.0 819.0 817.7 819.0 DAY 12 6 2 8 1 6 3 11 23 15 25 31 MIN. QFE PRESSURE IN HPA 798.5 795.3 796.0 803.4 804.8 803.4 802.2 807.6 807.0 806.0 807.6 801.7 795.3 DAY 28 19 26 20 29 30 1 1 7 29 20 6 MEAN QNH PRESSURE IN HPA 1019.7 1014.9 1016.0 1019.0 1021.6 1018.0 1015.6 1019.7 1021.1 1023.5 1023.2 1022.0 1019.5 MAX. QNH PRESSURE IN HPA 1028.8 1023.5 1025.2 1025.7 1026.6 1022.2 1022.3 1022.7 1026.8 1029.5 1030.7 1029.2 1030.7 DAY 12 6 2 8 1 6 3 11 23 15 25 31 MIN. QNH PRESSURE IN HPA 1006.0 1002.2 1003.0 1011.9 1013.6 1011.9 1010.5 1017.0 1016.3 1015.1 1017.0 1009.9 1002.2 DAY 28 19 26 20 29 30 1 1 7 29 20 6 MEAN QFF PRESSURE IN HPA 1022.5 1016.9 1015.4 1012.4 1012.2 1003.6 997.6 1002.7 1008.1 1013.8 1021.4 1024.0 1012.5 MAX. QFF PRESSURE IN HPA 1029.8 1027.8 1033.9 1021.8 1023.0 1011.7 1006.3 1005.4 1016.0 1020.3 1032.7 1039.2 1039.2 DAY 18 6 2 3 1 6 3 8 23 23 25 12 MIN. QFF PRESSURE IN HPA 1009.6 1001.8 997.9 1001.7 1003.8 995.9 994.2 999.7 1000.8 1004.0 1010.5 1009.4 994.2 DAY 28 20 26 20 29 30 7 14 1 29 9 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 810.7 806.8 807.5 809.9 811.9 808.7 806.7 810.4 811.6 813.9 813.8 812.8 810.4 MAX. QFE PRESSURE IN HPA 818.0 813.6 816.0 816.2 816.5 812.2 812.7 812.8 816.1 819.0 820.7 818.8 820.7 DAY 12 6 2 8 1 6 3 9 23 15 25 30 MIN. QFE PRESSURE IN HPA 798.3 795.6 793.1 804.0 805.1 803.6 802.6 808.0 807.9 806.7 808.7 801.7 793.1 DAY 28 19 26 20 29 30 1 21 7 27 9 6 MEAN QNH PRESSURE IN HPA 1020.7 1016.1 1016.9 1019.8 1022.2 1018.3 1015.9 1020.3 1021.8 1024.6 1024.4 1023.2 1020.4 MAX. QNH PRESSURE IN HPA 1029.5 1024.2 1027.1 1027.4 1027.7 1022.5 1023.1 1023.3 1027.2 1030.7 1032.8 1030.5 1032.8 DAY 12 6 2 8 1 6 3 9 23 15 25 30 MIN. QNH PRESSURE IN HPA 1005.8 1002.5 999.5 1012.7 1014.0 1012.2 1011.0 1017.5 1017.4 1015.9 1018.3 1009.9 999.5 DAY 28 19 26 20 29 30 1 21 7 27 9 6 MEAN QFF PRESSURE IN HPA 1023.6 1017.8 1016.2 1012.5 1012.0 1003.5 997.9 1003.0 1008.0 1013.8 1022.2 1025.0 1013.0 MAX. QFF PRESSURE IN HPA 1030.3 1027.8 1035.3 1022.6 1024.1 1013.1 1006.8 1005.3 1017.1 1020.1 1034.3 1038.9 1038.9 DAY 31 7 2 29 1 6 3 8 23 23 25 12 MIN. QFF PRESSURE IN HPA 1008.5 1001.4 994.6 1002.4 1003.7 995.8 993.6 999.9 999.8 1003.9 1011.6 1010.3 993.6 DAY 28 20 26 20 29 30 8 14 6 27 9 6 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 810.2 806.5 807.3 809.5 811.3 807.9 805.8 809.5 810.8 813.1 813.0 812.0 809.8 MAX. QFE PRESSURE IN HPA 817.0 813.4 816.0 815.7 816.0 811.6 812.0 812.4 815.3 818.8 820.1 817.9 820.1 DAY 12 6 2 8 1 6 3 11 22 15 25 11 MIN. QFE PRESSURE IN HPA 795.7 795.4 797.0 803.5 805.4 802.8 801.9 807.0 806.9 807.2 807.6 800.7 795.4 DAY 28 19 26 20 29 30 1 21 7 29 14 6 MEAN QNH PRESSURE IN HPA 1020.2 1015.7 1016.6 1019.3 1021.5 1017.4 1014.8 1019.3 1020.9 1023.6 1023.5 1022.3 1019.6 MAX. QNH PRESSURE IN HPA 1028.3 1024.0 1027.1 1026.8 1027.1 1021.8 1022.3 1022.8 1026.3 1030.5 1032.1 1029.4 1032.1 DAY 12 6 2 8 1 6 3 11 22 15 25 11 MIN. QNH PRESSURE IN HPA 1002.6 1002.3 1004.2 1012.0 1014.3 1011.2 1010.1 1016.3 1016.1 1016.5 1017.0 1008.7 1002.3 DAY 28 19 26 20 29 30 1 21 7 29 14 6 MEAN QFF PRESSURE IN HPA 1022.1 1016.5 1015.0 1011.2 1010.9 1002.0 996.3 1001.0 1006.1 1011.9 1020.3 1023.1 1011.4 MAX. QFF PRESSURE IN HPA 1030.4 1025.9 1033.8 1020.5 1022.1 1011.0 1005.2 1003.7 1015.0 1018.1 1031.7 1036.0 1036.0 DAY 31 28 2 29 1 6 3 8 23 15 25 12 MIN. QFF PRESSURE IN HPA 1002.9 1001.7 1002.6 1001.4 1003.5 994.1 991.8 997.8 998.8 1004.2 1010.2 1007.4 991.8 DAY 28 19 12 20 29 30 7 27 6 27 9 6 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 809.4 805.7 806.2 808.6 810.3 806.9 804.8 808.3 809.6 812.2 812.0 811.3 808.8 MAX. QFE PRESSURE IN HPA 816.5 812.8 814.5 813.9 814.2 810.9 810.8 811.4 814.0 817.0 819.3 818.4 819.3 DAY 7 6 2 8 1 2 3 11 22 15 25 11 MIN. QFE PRESSURE IN HPA 794.6 796.0 797.2 802.2 805.6 801.3 801.5 805.7 806.1 806.6 806.0 801.5 794.6 DAY 28 19 26 20 29 30 1 21 7 27 9 6 MEAN QNH PRESSURE IN HPA 1019.1 1014.7 1015.3 1018.2 1020.3 1016.1 1013.6 1017.8 1019.5 1022.5 1022.3 1021.4 1018.4 MAX. QNH PRESSURE IN HPA 1027.7 1023.3 1025.3 1024.6 1024.9 1021.0 1020.8 1021.6 1024.7 1028.3 1031.1 1030.0 1031.1 DAY 7 6 2 8 1 2 3 11 22 15 25 11 MIN. QNH PRESSURE IN HPA 1001.3 1003.0 1004.4 1010.5 1014.6 1009.4 1009.6 1014.7 1015.2 1015.8 1015.1 1009.6 1001.3 DAY 28 19 26 20 29 30 1 21 7 27 9 6 MEAN QFF PRESSURE IN HPA 1020.8 1015.5 1013.5 1010.3 1010.0 1001.0 995.1 999.7 1005.0 1011.1 1019.0 1022.1 1010.2 MAX. QFF PRESSURE IN HPA 1028.5 1025.4 1031.6 1020.4 1019.0 1009.1 1003.6 1003.2 1013.0 1016.7 1030.3 1034.6 1034.6 DAY 31 28 2 30 1 2 3 8 22 23 25 30 MIN. QFF PRESSURE IN HPA 1002.2 1002.2 999.9 999.4 1004.4 991.7 991.2 996.5 997.3 1003.5 1007.9 1008.6 991.2 DAY 28 19 12 20 23 30 7 13 6 27 9 6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 809.9 806.0 806.4 808.8 810.2 806.6 804.7 808.0 809.7 812.4 812.5 812.0 808.9 MAX. QFE PRESSURE IN HPA 817.2 813.2 814.5 814.9 813.6 811.0 810.0 811.0 813.7 817.0 819.4 819.5 819.5 DAY 7 6 2 7 1 2 3 11 22 15 25 11 MIN. QFE PRESSURE IN HPA 796.0 796.9 797.7 802.1 806.0 800.8 801.2 805.3 806.4 807.0 807.6 803.0 796.0 DAY 28 19 12 20 7 30 25 20 6 28 19 6 MEAN QNH PRESSURE IN HPA 1019.8 1015.1 1015.6 1018.5 1020.2 1015.8 1013.5 1017.5 1019.5 1022.7 1022.9 1022.3 1018.6 MAX. QNH PRESSURE IN HPA 1028.6 1023.7 1025.3 1025.8 1024.2 1021.1 1019.9 1021.1 1024.3 1028.3 1031.2 1031.3 1031.3 DAY 7 6 2 7 1 2 3 11 22 15 25 11 MIN. QNH PRESSURE IN HPA 1003.0 1004.1 1005.1 1010.4 1015.1 1008.8 1009.3 1014.2 1015.5 1016.3 1017.0 1011.4 1003.0 DAY 28 19 12 20 7 30 25 20 6 28 19 6 MEAN QFF PRESSURE IN HPA 1022.7 1017.1 1014.8 1011.7 1010.6 1001.5 995.9 1000.7 1006.7 1013.1 1021.2 1024.3 1011.7 MAX. QFF PRESSURE IN HPA 1029.6 1027.9 1032.2 1020.5 1019.0 1009.7 1002.6 1003.3 1013.4 1018.8 1032.4 1038.1 1038.1 DAY 18 28 2 30 1 6 3 8 26 22 25 11 MIN. QFF PRESSURE IN HPA 1004.4 1003.9 999.7 1001.1 1004.3 992.9 991.8 997.5 999.2 1005.5 1012.4 1011.4 991.8 DAY 28 19 12 20 22 30 7 13 6 27 9 6 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 810.4 806.4 807.3 809.8 811.2 807.8 805.9 809.2 810.7 813.2 813.0 812.3 809.8 MAX. QFE PRESSURE IN HPA 817.9 813.8 814.6 817.8 814.0 811.9 810.0 811.5 815.1 817.6 819.6 819.9 819.9 DAY 7 6 2 7 1 2 3 8 22 14 25 11 MIN. QFE PRESSURE IN HPA 798.3 797.3 797.8 802.0 806.0 802.3 802.1 806.2 807.3 806.7 807.8 804.9 797.3 DAY 28 18 26 27 7 30 25 20 6 28 19 6 MEAN QNH PRESSURE IN HPA 1020.4 1015.6 1016.6 1019.7 1021.4 1017.3 1014.9 1018.9 1020.8 1023.7 1023.4 1022.6 1019.6 MAX. QNH PRESSURE IN HPA 1029.4 1024.5 1025.4 1029.3 1024.7 1022.2 1019.9 1021.7 1026.0 1029.0 1031.5 1031.8 1031.8 DAY 7 6 2 7 1 2 3 8 22 14 25 11 MIN. QNH PRESSURE IN HPA 1005.8 1004.6 1005.2 1010.2 1015.1 1010.6 1010.4 1015.3 1016.6 1015.9 1017.2 1013.7 1004.6 DAY 28 18 26 27 7 30 25 20 6 28 19 6 MEAN QFF PRESSURE IN HPA 1023.3 1017.3 1015.7 1012.4 1011.2 1002.6 997.2 1001.6 1007.1 1013.1 1021.3 1024.5 1012.3 MAX. QFF PRESSURE IN HPA 1030.3 1028.9 1032.5 1022.4 1019.2 1011.1 1003.8 1004.4 1015.7 1018.7 1032.5 1040.0 1040.0 DAY 18 28 1 29 1 6 2 8 22 22 25 11 MIN. QFF PRESSURE IN HPA 1007.2 1004.4 1001.1 1000.5 1003.7 995.5 993.0 998.4 999.6 1005.1 1011.3 1010.4 993.0 DAY 28 19 12 27 7 30 7 13 6 28 8 18 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 810.3 806.3 807.0 809.8 811.3 808.2 806.3 809.6 810.9 813.1 812.9 812.0 809.8 MAX. QFE PRESSURE IN HPA 817.6 813.2 814.4 818.0 814.4 811.9 810.7 812.0 815.8 817.8 819.2 818.9 819.2 DAY 11 6 2 7 25 2 3 8 22 14 25 11 MIN. QFE PRESSURE IN HPA 798.6 797.6 797.2 803.2 805.2 803.0 803.2 806.7 807.6 806.1 807.6 804.4 797.2 DAY 28 19 12 20 7 30 25 21 7 28 19 18 MEAN QNH PRESSURE IN HPA 1020.2 1015.4 1016.3 1019.7 1021.5 1017.7 1015.4 1019.3 1020.9 1023.6 1023.4 1022.3 1019.6 MAX. QNH PRESSURE IN HPA 1029.0 1023.7 1025.2 1029.5 1025.2 1022.2 1020.7 1022.3 1026.9 1029.3 1031.0 1030.6 1031.0 DAY 11 6 2 7 25 2 3 8 22 14 25 11 MIN. QNH PRESSURE IN HPA 1006.1 1004.9 1004.4 1011.7 1014.1 1011.4 1011.7 1015.9 1017.0 1015.2 1017.0 1013.1 1004.4 DAY 28 19 12 20 7 30 25 21 7 28 19 18 MEAN QFF PRESSURE IN HPA 1022.2 1016.3 1014.5 1011.5 1010.7 1002.3 997.0 1001.0 1006.2 1012.0 1020.3 1023.2 1011.4 MAX. QFF PRESSURE IN HPA 1028.8 1027.7 1032.1 1021.8 1018.9 1011.3 1004.5 1004.3 1015.6 1017.5 1030.1 1038.4 1038.4 DAY 18 28 1 30 1 6 2 2 22 22 24 11 MIN. QFF PRESSURE IN HPA 1006.4 1003.5 999.5 1001.9 1002.3 995.1 993.0 998.3 999.5 1003.5 1009.0 1006.5 993.0 DAY 28 19 12 20 7 29 7 21 6 28 8 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.6 2.1 8.5 9.3 13.9 21.3 24.2 25.4 20.3 14.9 5.8 -1.1 12.1 MINIMUN AIR TEMPERATURE (C) -2.6 -2.3 3.4 3.8 8.2 13.2 16.0 17.2 12.4 8.4 1.9 -4.9 6.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 2 1 0 0 0 4 DAYS WITH MINIMUM TEMP. <=-4 8 9 2 0 0 0 0 0 0 0 5 14 38 DAYS WITH FREEZING MIN.<= 0 21 23 11 7 0 0 0 0 0 0 11 29 102 TEMPERATURE RECORDS LOWEST(C) -12.6 -8.6 -7.6 -3.9 3.7 7.2 11.5 14.0 6.5 2.8 -6.8 -15.5 -15.5 DAY 30 24 16 6 14 3 13 13 29 24 25 18 MAXIMUM AIR TEMPERATURE (C) 4.7 6.6 14.3 14.7 19.5 28.2 31.4 33.0 27.8 21.2 10.6 3.5 18.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 9 24 30 9 0 0 0 72 DAYS WITH MAXIMUM TEMP. <= 0 2 2 1 0 0 0 0 0 0 0 0 7 12 TEMPERATURE RECORDS HIGHEST(C) 9.5 15.4 21.0 21.4 26.0 32.0 35.4 36.6 32.6 25.8 15.5 8.4 36.6 DAY 12 28 5 22 28 20 30 18 2 10 1 1 DIF. BETWEEN (MAX.-MIN.) (C) 7.3 8.9 10.9 10.9 11.3 15.0 15.4 15.8 15.4 12.8 8.7 8.4 11.8 MEAN DAILY TEMP. (MDT) (C) 1.1 2.1 8.8 9.3 13.9 20.7 23.7 25.1 20.1 14.8 6.3 -0.7 12.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 27.8 89.9 126.7 29.3 0.9 0.0 0.0 274.6 HEATING DEG. DAYS(BASE 18 0C) 524.7 460.1 284.9 261.6 133.1 2.6 0.0 0.0 9.6 105.8 352.3 579.3 2714.1 DEWPOINT (MEAN C) -4.2 -6.1 -5.4 -0.9 2.7 0.2 1.8 -0.4 -3.6 -2.7 -0.1 -6.4 -2.1 MIXING RATIO (G/KG) 3.54 3.10 3.29 4.59 5.89 5.03 5.76 4.83 3.83 4.04 4.92 3.04 4.32 VAPOUR PRESSURE (HPA) 4.57 4.01 4.27 5.92 7.58 6.48 7.40 6.22 4.97 5.26 6.37 3.93 5.58 SATURATION DEF. (HPA) 1.99 3.43 7.78 6.36 8.98 19.95 24.19 27.56 20.27 12.40 3.30 1.91 11.51 RELATIVE HUMIDITY (MEAN %) 73 58 43 53 51 28 28 21 23 33 68 70 46 RELATIVE HUMIDITY (MAX. %) 88 75 61 77 75 46 47 36 38 52 87 85 64 RELATIVE HUMIDITY (MIN. %) 55 42 26 34 32 13 13 10 11 19 48 51 30 RELATIVE HUMIDITY (MEAN% 03UTC) 80 66 55 69 69 44 46 36 38 48 79 79 59 RELATIVE HUMIDITY (MEAN% 09UTC) 66 49 33 41 40 20 19 15 17 26 62 60 37 RELATIVE HUMIDITY (MEAN% 15UTC) 69 55 35 44 42 16 16 11 14 26 63 68 38 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 36.0 16.5 58.1 36.6 47.4 4.0 5.8 0.0 0.0 12.7 58.3 22.7 298.1 DAYS WITH PRECIPITATION >=10 2 0 1 1 1 0 0 0 0 0 2 1 8 DAYS WITH PRECIPITATION >= 5 2 2 1 3 3 0 0 0 0 1 3 2 17 DAYS WITH PRECIPITATION >= 1 7 4 2 8 9 1 2 0 0 3 10 3 49 DAYS WITH PRECIPITATION 12 9 8 16 13 1 4 0 0 5 15 11 94 GREATEST DAILY PRECIPITATION 12.9 5.4 53.0 12.0 17.0 4.0 4.3 0.0 0.0 8.0 17.8 11.0 53.0 DAY 13 5 31 23 3 15 12 ** ** 22 23 25 DAY WITH THUNDER STORM 1 0 1 3 10 2 4 0 0 3 1 0 25 DAYS WITH SNOW OR SLEET 10 7 4 2 0 0 0 0 0 0 2 8 33 DAYS WITH DUST 0 0 0 2 2 1 0 0 0 1 0 0 6 WIND DIRECTION (PREVAILING) 225 225 225 225 225 270 135 225 270 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 12.6 14.4 13.7 16.1 13.0 9.9 10.1 10.8 9.8 10.5 13.5 10.9 12.8 PREVAILING WIND PERCENT 32.7 33.2 32.3 27.1 25.0 16.3 17.3 23.0 16.7 21.8 32.1 25.8 24.5 CALMS PERCENT OF WIND 48.0 39.7 33.9 42.1 38.7 45.4 38.3 43.5 48.3 49.2 27.9 35.5 40.9 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 214 221 225 215 237 241 201 217 232 243 221 217 223 VECTOR WIND MAGNITUDE(KNOTS) 5.2 7.1 6.0 5.7 5.0 2.7 2.4 3.4 2.2 3.5 5.2 3.1 4.2 WIND STEADINESES (MEAN %) 85.2 85.5 73.2 71.2 69.4 49.1 36.9 58.6 44.9 67.3 74.3 56.4 64.6 WIND SPEED (MEAN KNOTS) 6.1 8.3 8.2 8.0 7.2 5.5 6.5 5.8 4.9 5.2 7.0 5.5 6.5 FASTEST WIND DIRECTION 220 230 190 200 270 30 240 90 210 290 230 210 270 FASTEST WIND SPEED (KNOTS) 29 39 39 39 60 25 33 31 27 29 37 27 60 DAY 8 17 6 3 10 18 23 30 6 16 17 12 DAYS WITH SKY CLEAR (0-2)/8 10 9 7 9 13 29 25 31 30 23 12 13 211 DAYS WITH P.CLOUDY (3-6)/8 13 17 21 14 13 1 6 0 0 6 10 11 112 DAYS WITH CLOUDY (7-8)/8 7 3 3 7 5 0 0 0 0 2 8 7 42 DAYS WITH VISIBILITY =< 2 KM 7 1 2 1 1 0 0 0 0 0 3 4 19 DURATION OF SUNSHINE HOURS 172.3 208.0 239.2 214.7 271.7 373.3 344.5 370.3 321.5 263.7 165.3 164.7 3109.2 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 807.4 809.0 811.0 808.3 808.5 808.7 807.9 807.9 812.6 815.1 811.6 810.3 809.9 MAX. QFE PRESSURE IN HPA 813.5 815.6 817.3 815.9 813.1 814.1 812.3 811.9 818.4 819.4 816.5 819.5 819.5 DAY-HOUR 1- 0 10- 6 9- 6 28- 6 18-18 6- 6 18- 6 29- 6 25- 6 27- 6 1- 6 3- 6 MIN. QFE PRESSURE IN HPA 799.7 797.9 803.1 798.0 797.2 802.9 802.5 802.8 806.8 806.2 799.0 801.8 797.2 DAY-HOUR 23-12 15-12 31-15 17- 3 15-15 15-15 10-21 3-12 12-12 22- 3 23- 6 15-12 MEAN QNH PRESSURE IN HPA 1016.7 1018.6 1021.1 1017.9 1018.1 1018.4 1017.3 1017.4 1023.0 1026.0 1021.8 1020.2 1019.7 MAX. QNH PRESSURE IN HPA 1024.1 1026.6 1028.7 1027.0 1023.6 1024.8 1022.7 1022.2 1030.0 1031.2 1027.7 1031.3 1031.3 DAY-HOUR 1- 0 10- 6 9- 6 28- 6 18-18 6- 6 18- 6 29- 6 25- 6 27- 6 1- 6 3- 6 MIN. QNH PRESSURE IN HPA 1007.5 1005.3 1011.6 1005.4 1004.4 1011.3 1010.8 1011.2 1016.0 1015.3 1006.6 1010.0 1004.4 DAY-HOUR 23-12 15-12 31-15 17- 3 15-15 15-15 10-21 3-12 12-12 22- 3 23- 6 15-12 MEAN QFF PRESSURE IN HPA 1018.1 1019.0 1016.2 1012.2 1008.6 1003.5 1000.3 999.6 1009.0 1016.2 1018.8 1023.3 1012.1 MAX. QFF PRESSURE IN HPA 1034.2 1030.8 1024.8 1022.7 1017.0 1011.9 1006.3 1006.0 1019.7 1025.3 1030.5 1038.3 1038.3 DAY-HOUR 30- 6 8- 6 16-18 6- 6 18- 3 5- 6 8- 3 29- 6 30- 6 27- 3 29- 3 29- 6 MIN. QFF PRESSURE IN HPA 1006.0 1002.7 1004.4 1000.0 995.3 996.7 995.7 991.8 999.7 1004.0 1001.5 1009.4 991.8 DAY-HOUR 23-12 15- 0 31- 0 16-18 15-15 20-12 10-21 3-12 11-12 22- 0 23- 6 15-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 807.4 808.7 811.0 808.2 808.3 808.8 808.1 808.1 812.5 815.0 811.5 810.1 809.8 MAX. QFE PRESSURE IN HPA 813.5 815.0 816.2 814.1 812.2 813.0 811.0 810.8 817.0 818.6 815.6 817.9 818.6 DAY 1 10 24 28 19 6 18 29 28 27 15 4 MIN. QFE PRESSURE IN HPA 801.0 798.3 804.3 799.0 800.0 805.2 803.9 804.5 808.1 807.3 800.4 802.6 798.3 DAY 24 23 31 17 13 15 11 4 17 22 23 16 MEAN QNH PRESSURE IN HPA 1016.7 1018.3 1021.1 1017.7 1017.9 1018.4 1017.6 1017.5 1022.9 1025.9 1021.7 1020.0 1019.6 MAX. QNH PRESSURE IN HPA 1024.1 1025.9 1027.4 1024.8 1022.5 1023.5 1021.1 1020.8 1028.3 1030.2 1026.6 1029.4 1030.2 DAY 1 10 24 28 19 6 18 29 28 27 15 4 MIN. QNH PRESSURE IN HPA 1009.0 1005.8 1013.0 1006.6 1007.8 1014.1 1012.5 1013.3 1017.6 1016.6 1008.3 1011.0 1005.8 DAY 24 23 31 17 13 15 11 4 17 22 23 16 MEAN QFF PRESSURE IN HPA 1017.5 1018.3 1015.5 1011.8 1008.1 1003.4 1000.3 999.1 1008.2 1015.4 1018.1 1022.3 1011.5 MAX. QFF PRESSURE IN HPA 1030.0 1026.9 1023.2 1020.6 1014.9 1010.6 1003.8 1003.9 1016.7 1022.6 1028.7 1034.4 1034.4 DAY 30 24 23 8 18 3 1 29 30 27 29 30 MIN. QFF PRESSURE IN HPA 1007.6 1002.7 1004.4 1002.2 996.7 997.2 997.4 994.1 1000.0 1004.0 1002.7 1010.0 994.1 DAY 24 15 31 17 13 20 4 3 6 22 23 16 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 807.2 808.8 811.2 808.2 808.5 809.2 808.5 808.4 812.9 815.1 811.6 810.1 810.0 MAX. QFE PRESSURE IN HPA 812.6 814.8 816.4 814.6 812.3 814.0 811.9 811.1 817.4 818.7 815.5 818.0 818.7 DAY 1 10 9 28 18 6 18 30 27 27 1 3 MIN. QFE PRESSURE IN HPA 800.5 799.9 804.3 798.0 798.8 805.0 805.0 804.2 808.6 806.2 799.9 802.7 798.0 DAY 23 15 31 17 13 15 11 3 12 22 23 16 MEAN QNH PRESSURE IN HPA 1016.5 1018.4 1021.3 1017.7 1018.1 1018.9 1018.0 1017.9 1023.4 1026.1 1021.8 1020.0 1019.8 MAX. QNH PRESSURE IN HPA 1023.0 1025.7 1027.6 1025.4 1022.7 1024.7 1022.2 1021.2 1028.8 1030.4 1026.5 1029.5 1030.4 DAY 1 10 9 28 18 6 18 30 27 27 1 3 MIN. QNH PRESSURE IN HPA 1008.4 1007.7 1013.0 1005.4 1006.4 1013.9 1013.9 1012.9 1018.2 1015.3 1007.7 1011.1 1005.4 DAY 23 15 31 17 13 15 11 3 12 22 23 16 MEAN QFF PRESSURE IN HPA 1018.5 1019.6 1017.1 1012.8 1009.1 1004.5 1001.7 1000.8 1010.4 1017.4 1019.5 1023.9 1012.9 MAX. QFF PRESSURE IN HPA 1031.3 1030.1 1024.7 1021.9 1017.0 1011.2 1006.3 1005.9 1018.4 1025.3 1030.5 1036.5 1036.5 DAY 30 8 23 8 18 6 8 30 30 27 29 30 MIN. QFF PRESSURE IN HPA 1006.7 1002.8 1005.8 1002.2 995.4 999.0 997.2 994.1 1001.5 1004.3 1002.6 1011.5 994.1 DAY 23 15 31 17 13 24 4 3 6 22 23 16 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 808.0 809.7 812.0 808.9 809.0 809.7 808.8 808.9 813.7 816.1 812.5 811.1 810.7 MAX. QFE PRESSURE IN HPA 812.5 815.6 817.3 815.9 813.0 814.1 812.3 811.9 818.4 819.4 816.5 819.5 819.5 DAY 30 10 9 28 26 6 18 29 25 27 1 3 MIN. QFE PRESSURE IN HPA 801.1 800.0 804.1 799.2 800.1 805.1 805.0 804.4 809.0 809.2 799.0 803.5 799.0 DAY 23 15 31 17 13 15 11 3 12 22 23 15 MEAN QNH PRESSURE IN HPA 1017.4 1019.5 1022.3 1018.6 1018.7 1019.5 1018.4 1018.5 1024.3 1027.2 1022.9 1021.2 1020.7 MAX. QNH PRESSURE IN HPA 1022.9 1026.6 1028.7 1027.0 1023.5 1024.8 1022.7 1022.2 1030.0 1031.2 1027.7 1031.3 1031.3 DAY 30 10 9 28 26 6 18 29 25 27 1 3 MIN. QNH PRESSURE IN HPA 1009.2 1007.8 1012.8 1006.9 1007.9 1014.0 1013.9 1013.1 1018.7 1018.9 1006.6 1012.0 1006.6 DAY 23 15 31 17 13 15 11 3 12 22 23 15 MEAN QFF PRESSURE IN HPA 1019.5 1020.2 1017.8 1013.2 1009.2 1004.7 1001.4 1000.8 1010.5 1017.6 1020.2 1024.8 1013.3 MAX. QFF PRESSURE IN HPA 1034.2 1030.8 1024.6 1022.7 1015.5 1011.9 1004.5 1006.0 1019.7 1024.9 1030.0 1038.3 1038.3 DAY 30 8 16 6 18 5 8 29 30 27 29 29 MIN. QFF PRESSURE IN HPA 1008.5 1004.3 1008.1 1002.6 999.0 998.9 998.2 993.8 1002.8 1010.9 1001.5 1012.6 993.8 DAY 23 15 31 17 15 20 4 3 1 22 23 15 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 807.6 809.4 811.4 808.5 808.7 808.8 808.0 808.0 812.8 815.4 811.7 810.5 810.1 MAX. QFE PRESSURE IN HPA 812.4 815.2 816.4 815.0 812.4 813.3 812.0 811.1 817.7 818.5 816.1 818.5 818.5 DAY 30 10 23 12 3 5 17 29 27 27 1 3 MIN. QFE PRESSURE IN HPA 800.9 799.0 804.3 799.8 799.2 803.6 804.3 803.6 808.1 809.5 799.0 802.6 799.0 DAY 23 15 31 17 15 15 11 3 12 22 23 15 MEAN QNH PRESSURE IN HPA 1017.0 1019.2 1021.5 1018.1 1018.4 1018.5 1017.5 1017.5 1023.3 1026.4 1022.0 1020.4 1020.0 MAX. QNH PRESSURE IN HPA 1022.8 1026.2 1027.6 1025.9 1022.8 1023.9 1022.3 1021.2 1029.2 1030.1 1027.2 1030.1 1030.1 DAY 30 10 23 12 3 5 17 29 27 27 1 3 MIN. QNH PRESSURE IN HPA 1008.9 1006.6 1013.0 1007.6 1006.9 1012.2 1013.0 1012.2 1017.6 1019.3 1006.6 1011.0 1006.6 DAY 23 15 31 17 15 15 11 3 12 22 23 15 MEAN QFF PRESSURE IN HPA 1018.1 1019.0 1016.1 1012.0 1008.5 1003.1 999.9 999.2 1008.6 1015.7 1018.6 1022.9 1011.8 MAX. QFF PRESSURE IN HPA 1033.2 1029.6 1024.4 1020.9 1017.0 1010.7 1003.1 1003.9 1017.3 1022.0 1028.2 1035.8 1035.8 DAY 30 8 22 12 3 5 17 23 30 27 28 29 MIN. QFF PRESSURE IN HPA 1007.4 1003.0 1008.4 1002.7 996.6 997.1 997.1 992.6 1001.1 1009.5 1004.7 1010.1 992.6 DAY 23 15 6 23 15 20 4 3 2 22 23 15 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 806.8 808.4 810.2 807.7 808.0 807.8 806.9 806.9 811.6 814.2 810.7 809.6 809.1 MAX. QFE PRESSURE IN HPA 811.3 814.0 815.2 813.7 812.0 812.7 810.8 809.9 816.4 817.1 814.9 817.6 817.6 DAY 30 8 23 12 3 5 17 29 27 26 1 3 MIN. QFE PRESSURE IN HPA 799.7 797.9 803.4 799.8 797.7 803.4 803.1 802.8 806.8 808.9 799.7 801.8 797.7 DAY 23 15 31 4 15 15 11 3 12 22 23 15 MEAN QNH PRESSURE IN HPA 1016.0 1018.0 1020.1 1017.1 1017.5 1017.2 1016.2 1016.2 1021.8 1025.0 1020.7 1019.4 1018.8 MAX. QNH PRESSURE IN HPA 1021.5 1024.7 1026.2 1024.3 1022.3 1023.1 1020.8 1019.8 1027.6 1028.4 1025.8 1029.0 1029.0 DAY 30 8 23 12 3 5 17 29 27 26 1 3 MIN. QNH PRESSURE IN HPA 1007.5 1005.3 1011.9 1007.6 1005.1 1011.9 1011.6 1011.2 1016.0 1018.6 1007.5 1010.0 1005.1 DAY 23 15 31 4 15 15 11 3 12 22 23 15 MEAN QFF PRESSURE IN HPA 1016.8 1017.8 1014.7 1011.0 1007.7 1002.2 999.0 997.9 1007.3 1014.7 1017.1 1021.7 1010.7 MAX. QFF PRESSURE IN HPA 1031.0 1026.7 1022.1 1019.1 1015.7 1009.8 1002.5 1002.5 1015.1 1020.7 1027.5 1034.0 1034.0 DAY 30 8 22 7 3 5 17 28 30 27 28 29 MIN. QFF PRESSURE IN HPA 1006.0 1002.7 1006.5 1001.6 995.4 996.7 996.1 991.8 999.7 1007.8 1005.1 1009.4 991.8 DAY 23 15 30 4 15 20 28 3 11 21 27 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 807.3 808.6 810.3 807.8 808.0 807.7 806.7 806.9 811.6 814.5 811.3 810.1 809.2 MAX. QFE PRESSURE IN HPA 811.7 814.4 815.3 813.3 812.0 812.9 810.1 809.8 816.2 817.4 815.5 818.6 818.6 DAY 11 9 23 11 18 5 17 29 27 26 1 3 MIN. QFE PRESSURE IN HPA 800.2 800.2 803.1 800.4 797.2 802.9 802.6 802.9 807.0 809.3 802.3 802.4 797.2 DAY 23 15 31 16 15 15 11 3 12 21 23 15 MEAN QNH PRESSURE IN HPA 1016.6 1018.2 1020.2 1017.2 1017.5 1017.1 1015.9 1016.1 1021.8 1025.4 1021.4 1020.0 1018.9 MAX. QNH PRESSURE IN HPA 1021.9 1025.2 1026.3 1023.9 1022.3 1023.4 1020.0 1019.6 1027.4 1028.8 1026.5 1030.2 1030.2 DAY 11 9 23 11 18 5 17 29 27 26 1 3 MIN. QNH PRESSURE IN HPA 1008.1 1008.1 1011.6 1008.3 1004.4 1011.3 1011.0 1011.3 1016.3 1019.0 1010.6 1010.7 1004.4 DAY 23 15 31 16 15 15 11 3 12 21 23 15 MEAN QFF PRESSURE IN HPA 1018.5 1019.2 1016.1 1012.1 1008.4 1002.7 999.7 999.2 1009.0 1016.8 1019.2 1023.8 1012.1 MAX. QFF PRESSURE IN HPA 1031.5 1028.1 1023.6 1020.1 1015.7 1009.9 1004.8 1003.4 1017.3 1023.0 1029.8 1037.6 1037.6 DAY 30 8 22 10 3 5 7 23 30 27 28 29 MIN. QFF PRESSURE IN HPA 1007.2 1005.3 1006.2 1001.8 995.3 998.3 996.2 993.1 1000.3 1009.4 1008.3 1011.1 993.1 DAY 23 14 30 16 15 15 28 3 1 21 17 15 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 807.6 809.2 811.1 808.6 808.9 809.0 807.9 808.1 812.8 815.3 811.9 810.6 810.1 MAX. QFE PRESSURE IN HPA 812.1 815.2 816.2 814.5 813.1 813.1 811.0 810.7 816.6 818.6 816.0 818.7 818.7 DAY 11 29 23 11 18 5 17 29 27 26 14 3 MIN. QFE PRESSURE IN HPA 800.9 801.7 803.3 799.2 799.2 805.5 803.4 804.1 808.0 809.1 804.8 802.8 799.2 DAY 23 22 31 16 15 17 10 3 12 21 23 15 MEAN QNH PRESSURE IN HPA 1017.0 1018.9 1021.2 1018.2 1018.5 1018.7 1017.4 1017.6 1023.2 1026.2 1022.1 1020.6 1020.0 MAX. QNH PRESSURE IN HPA 1022.4 1026.2 1027.4 1025.3 1023.6 1023.6 1021.1 1020.7 1027.8 1030.2 1027.1 1030.4 1030.4 DAY 11 29 23 11 18 5 17 29 27 26 14 3 MIN. QNH PRESSURE IN HPA 1008.9 1009.9 1011.8 1006.9 1006.9 1014.5 1011.9 1012.8 1017.5 1018.8 1013.6 1011.2 1006.9 DAY 23 22 31 16 15 17 10 3 12 21 23 15 MEAN QFF PRESSURE IN HPA 1018.9 1019.5 1016.7 1012.7 1009.1 1004.0 1000.4 1000.1 1009.6 1016.7 1019.5 1024.2 1012.6 MAX. QFF PRESSURE IN HPA 1031.3 1027.2 1024.8 1020.7 1015.7 1011.3 1005.6 1004.8 1017.7 1022.9 1029.6 1037.4 1037.4 DAY 30 8 16 11 18 5 7 29 30 27 28 29 MIN. QFF PRESSURE IN HPA 1008.5 1005.6 1009.1 1000.0 997.9 998.8 996.7 994.8 1001.2 1007.7 1009.1 1011.6 994.8 DAY 23 14 30 16 15 20 9 3 5 21 17 15 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 807.4 809.1 811.0 808.7 808.9 809.2 808.2 808.5 812.9 815.2 811.7 810.4 810.1 MAX. QFE PRESSURE IN HPA 812.0 815.0 816.6 815.0 813.1 814.0 811.0 811.2 817.0 818.7 816.0 818.2 818.7 DAY 29 9 23 27 18 5 17 29 27 26 14 3 MIN. QFE PRESSURE IN HPA 801.2 799.2 803.3 799.8 801.0 806.0 802.5 804.4 808.4 808.2 802.4 802.6 799.2 DAY 23 22 31 16 15 17 10 3 16 21 22 15 MEAN QNH PRESSURE IN HPA 1016.7 1018.8 1021.1 1018.4 1018.6 1018.9 1017.7 1018.0 1023.3 1026.1 1022.0 1020.4 1020.0 MAX. QNH PRESSURE IN HPA 1022.3 1025.9 1027.8 1025.9 1023.6 1024.7 1021.1 1021.3 1028.3 1030.4 1027.1 1029.8 1030.4 DAY 29 9 23 27 18 5 17 29 27 26 14 3 MIN. QNH PRESSURE IN HPA 1009.3 1006.9 1011.8 1007.6 1009.0 1015.1 1010.8 1013.1 1018.0 1017.7 1010.7 1011.0 1006.9 DAY 23 22 31 16 15 17 10 3 16 21 22 15 MEAN QFF PRESSURE IN HPA 1017.6 1018.4 1015.7 1012.0 1008.6 1003.5 1000.0 999.8 1008.8 1015.6 1018.8 1022.8 1011.8 MAX. QFF PRESSURE IN HPA 1030.5 1027.6 1023.6 1021.1 1014.9 1010.9 1004.6 1004.3 1017.0 1021.9 1029.8 1034.6 1034.6 DAY 29 23 16 7 18 5 7 29 29 26 28 28 MIN. QFF PRESSURE IN HPA 1008.1 1004.9 1005.9 1002.3 997.6 997.9 995.7 993.6 999.9 1005.7 1005.1 1010.1 993.6 DAY 23 22 30 16 12 19 10 19 5 21 22 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -4.1 -4.2 5.7 11.5 14.6 21.7 26.3 24.5 20.4 14.5 6.0 4.3 11.8 MINIMUN AIR TEMPERATURE (C) -7.7 -7.8 1.0 5.8 8.6 13.8 18.5 16.9 12.8 8.2 1.5 0.0 6.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 3 3 0 0 0 0 6 DAYS WITH MINIMUM TEMP. <=-4 22 19 2 1 0 0 0 0 0 0 0 5 49 DAYS WITH FREEZING MIN.<= 0 30 24 14 4 0 0 0 0 0 2 13 15 102 TEMPERATURE RECORDS LOWEST(C) -18.6 -23.0 -7.0 -4.2 0.8 9.4 16.0 12.4 9.0 -2.2 -3.7 -8.5 -23.0 DAY 14 12 26 6 6 9 6 13 28 23 12 27 MAXIMUM AIR TEMPERATURE (C) 0.2 0.4 10.9 17.4 20.9 28.2 33.5 31.8 27.8 20.8 11.4 9.7 17.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 9 31 25 7 0 0 0 72 DAYS WITH MAXIMUM TEMP. <= 0 14 12 0 0 0 0 0 0 0 0 0 2 28 TEMPERATURE RECORDS HIGHEST(C) 7.6 10.0 18.5 27.0 25.6 32.2 36.8 36.2 30.8 26.0 20.6 18.3 36.8 DAY 1 28 31 24 29 25 10 7 11 11 1 3 DIF. BETWEEN (MAX.-MIN.) (C) 7.9 8.2 9.9 11.6 12.3 14.4 15.0 14.9 15.0 12.6 9.9 9.7 11.7 MEAN DAILY TEMP. (MDT) (C) -3.8 -3.7 5.9 11.6 14.7 21.0 26.0 24.3 20.3 14.5 6.5 4.9 11.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 28.9 155.1 108.4 11.1 0.0 0.0 0.0 303.6 HEATING DEG. DAYS(BASE 18 0C) 675.1 608.6 374.1 195.0 101.3 4.8 0.0 0.0 5.6 111.6 346.0 406.9 2829.0 DEWPOINT (MEAN C) -8.1 -7.9 -4.3 -1.1 1.7 0.2 4.2 4.1 -2.4 -3.8 -2.3 -4.1 -2.0 MIXING RATIO (G/KG) 2.72 2.83 3.64 4.58 5.53 4.95 6.58 6.71 4.23 3.80 4.07 3.59 4.44 VAPOUR PRESSURE (HPA) 3.52 3.66 4.70 5.93 7.14 6.38 8.45 8.62 5.47 4.94 5.27 4.66 5.73 SATURATION DEF. (HPA) 1.31 1.37 4.79 8.61 10.24 20.70 27.18 23.45 19.61 12.51 4.56 4.28 11.55 RELATIVE HUMIDITY (MEAN %) 77 77 54 46 46 27 26 31 25 32 60 57 47 RELATIVE HUMIDITY (MAX. %) 87 88 73 68 70 45 42 49 42 52 78 73 64 RELATIVE HUMIDITY (MIN. %) 64 63 35 27 26 14 15 18 11 17 39 41 31 RELATIVE HUMIDITY (MEAN% 03UTC) 80 80 64 61 64 43 41 47 40 47 75 68 59 RELATIVE HUMIDITY (MEAN% 09UTC) 73 74 43 34 33 19 20 23 19 24 46 50 38 RELATIVE HUMIDITY (MEAN% 15UTC) 78 75 49 38 35 16 17 20 14 24 53 53 39 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 27.3 40.2 78.1 44.0 42.4 0.0 2.0 5.3 0.0 9.1 19.7 54.8 322.9 DAYS WITH PRECIPITATION >=10 0 1 2 2 0 0 0 0 0 0 0 3 8 DAYS WITH PRECIPITATION >= 5 2 3 3 3 4 0 0 0 0 1 1 4 21 DAYS WITH PRECIPITATION >= 1 8 6 8 6 10 0 1 2 0 2 5 4 52 DAYS WITH PRECIPITATION 11 10 9 8 12 0 1 3 0 2 7 6 69 GREATEST DAILY PRECIPITATION 8.0 13.0 45.0 19.1 8.0 0.0 2.0 4.3 0.0 5.0 9.0 18.3 45.0 DAY 19 7 11 16 24 ** 24 12 ** 29 17 23 DAY WITH THUNDER STORM 0 0 0 2 9 0 0 2 0 0 1 0 14 DAYS WITH SNOW OR SLEET 11 10 3 1 1 0 0 0 0 0 3 3 32 DAYS WITH DUST 1 0 1 1 3 8 7 2 1 3 1 0 28 WIND DIRECTION (PREVAILING) 225 225 225 225 225 270 270 225 225 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 14.7 13.9 14.6 10.9 11.2 9.5 8.1 8.9 8.8 10.7 8.7 9.6 11.0 PREVAILING WIND PERCENT 20.6 21.9 41.1 26.7 25.8 25.4 25.4 14.9 26.3 37.1 24.6 30.6 25.6 CALMS PERCENT OF WIND 35.9 34.8 8.5 23.8 17.3 15.4 18.5 23.4 30.4 27.0 34.2 38.3 25.5 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 212 222 237 204 221 245 224 225 235 226 217 219 225 VECTOR WIND MAGNITUDE(KNOTS) 3.8 3.8 8.5 4.1 4.2 3.4 1.9 1.1 3.6 4.8 2.6 3.7 3.7 WIND STEADINESES (MEAN %) 58.5 61.3 80.2 56.2 54.5 47.2 28.4 18.3 67.9 71.6 53.1 71.2 55.2 WIND SPEED (MEAN KNOTS) 6.5 6.2 10.6 7.3 7.7 7.2 6.7 6.0 5.3 6.7 4.9 5.2 6.7 FASTEST WIND DIRECTION 230 210 210 220 210 260 30 30 220 190 200 220 210 FASTEST WIND SPEED (KNOTS) 35 41 39 39 33 35 19 21 23 35 23 29 41 DAY 23 1 9 2 13 17 8 9 4 17 2 26 DAYS WITH SKY CLEAR (0-2)/8 12 14 13 14 12 30 29 26 30 26 17 21 244 DAYS WITH P.CLOUDY (3-6)/8 11 8 10 12 16 0 2 5 0 4 11 8 87 DAYS WITH CLOUDY (7-8)/8 8 6 8 4 3 0 0 0 0 1 2 2 34 DAYS WITH VISIBILITY =< 2 KM 11 10 2 1 0 0 0 0 0 0 5 0 29 DURATION OF SUNSHINE HOURS 161.0 167.7 251.4 254.0 290.3 385.2 356.5 346.8 328.0 285.9 206.2 220.6 3253.6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 808.8 807.3 808.0 811.2 810.0 808.3 807.8 808.6 810.5 813.8 812.7 812.5 809.9 MAX. QFE PRESSURE IN HPA 815.6 815.6 813.3 816.0 814.7 814.0 812.3 812.2 814.0 820.0 818.1 818.9 820.0 DAY-HOUR 9- 6 16- 6 28-18 6- 6 13- 6 15- 6 19- 6 16- 6 22- 6 11- 6 23-15 8- 6 MIN. QFE PRESSURE IN HPA 794.4 799.8 799.0 804.2 799.0 802.5 801.2 803.4 806.7 806.9 805.9 801.2 794.4 DAY-HOUR 23- 3 9- 0 24- 3 2-15 5-15 20-12 5-12 7-15 5-12 20-21 8-12 23-18 MEAN QNH PRESSURE IN HPA 1018.4 1016.6 1017.5 1021.3 1019.9 1017.8 1017.2 1018.2 1020.5 1024.4 1023.1 1022.9 1019.8 MAX. QNH PRESSURE IN HPA 1026.6 1026.6 1023.9 1027.1 1025.5 1024.7 1022.7 1022.5 1024.7 1031.9 1029.6 1030.6 1031.9 DAY-HOUR 9- 6 16- 6 28-18 6- 6 13- 6 15- 6 19- 6 16- 6 22- 6 11- 6 23-15 8- 6 MIN. QNH PRESSURE IN HPA 1001.1 1007.6 1006.6 1012.9 1006.6 1010.8 1009.3 1011.9 1015.9 1016.1 1014.9 1009.3 1001.1 DAY-HOUR 23- 3 9- 0 24- 3 2-15 5-15 20-12 5-12 7-15 5-12 20-21 8-12 23-18 MEAN QFF PRESSURE IN HPA 1024.2 1022.4 1014.7 1013.9 1010.0 1002.6 998.5 1000.7 1006.4 1015.0 1020.2 1021.4 1012.5 MAX. QFF PRESSURE IN HPA 1042.5 1041.5 1026.3 1028.9 1016.7 1011.2 1004.2 1009.6 1011.8 1030.6 1028.4 1036.6 1042.5 DAY-HOUR 13-18 16- 3 26- 6 6- 3 22- 6 7- 6 28- 3 12-18 30-21 23- 6 24- 3 29-18 MIN. QFF PRESSURE IN HPA 1004.5 1006.5 1003.4 1002.2 1000.6 993.7 989.9 990.9 999.9 1004.8 1008.5 1007.1 989.9 DAY-HOUR 3- 9 1-12 24- 0 2-12 3- 0 20-12 5-12 7-12 12-12 19-21 5-15 23-18 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 808.8 806.9 807.6 811.0 809.9 808.5 807.9 808.8 810.6 813.6 812.6 812.5 809.9 MAX. QFE PRESSURE IN HPA 815.0 814.1 811.9 815.1 813.4 812.8 811.0 811.2 813.0 818.8 816.6 817.9 818.8 DAY 1 16 28 6 13 16 19 19 23 11 29 8 MIN. QFE PRESSURE IN HPA 794.7 799.8 800.0 806.5 802.0 804.1 803.2 804.5 807.4 807.4 807.6 801.8 794.7 DAY 23 9 24 3 3 20 6 8 12 21 8 24 MEAN QNH PRESSURE IN HPA 1018.4 1016.1 1017.0 1021.1 1019.8 1018.1 1017.3 1018.4 1020.5 1024.2 1023.0 1022.9 1019.7 MAX. QNH PRESSURE IN HPA 1025.9 1024.8 1022.2 1026.0 1024.0 1023.3 1021.1 1021.3 1023.5 1030.5 1027.8 1029.4 1030.5 DAY 1 16 28 6 13 16 19 19 23 11 29 8 MIN. QNH PRESSURE IN HPA 1001.4 1007.6 1007.8 1015.7 1010.2 1012.8 1011.7 1013.3 1016.8 1016.8 1017.0 1010.0 1001.4 DAY 23 9 24 3 3 20 6 8 12 21 8 24 MEAN QFF PRESSURE IN HPA 1023.5 1021.1 1013.8 1013.4 1009.6 1002.8 998.5 1000.4 1005.8 1014.2 1019.3 1020.3 1011.9 MAX. QFF PRESSURE IN HPA 1037.5 1035.9 1020.4 1026.3 1014.6 1008.7 1001.9 1007.0 1009.8 1025.1 1025.7 1033.9 1037.5 DAY 14 16 27 6 22 15 28 13 29 24 24 31 MIN. QFF PRESSURE IN HPA 1005.2 1007.4 1003.4 1005.6 1000.6 995.7 992.8 992.3 1000.4 1005.1 1012.1 1007.9 992.3 DAY 23 1 24 2 3 20 5 8 12 20 5 24 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 808.6 806.9 807.9 811.3 810.1 808.8 808.3 809.1 810.9 813.9 812.7 812.5 810.1 MAX. QFE PRESSURE IN HPA 814.1 814.4 812.6 815.8 813.0 812.8 811.4 811.6 813.1 818.8 816.9 818.2 818.8 DAY 1 16 29 6 12 16 19 19 22 11 29 8 MIN. QFE PRESSURE IN HPA 794.4 800.0 799.0 807.0 802.2 804.2 803.2 804.6 807.6 808.0 806.9 802.9 794.4 DAY 23 7 24 2 3 27 6 8 12 20 8 24 MEAN QNH PRESSURE IN HPA 1018.2 1016.1 1017.3 1021.5 1020.0 1018.4 1017.9 1018.8 1021.0 1024.6 1023.2 1022.8 1020.0 MAX. QNH PRESSURE IN HPA 1024.8 1025.2 1023.0 1026.9 1023.5 1023.3 1021.6 1021.8 1023.6 1030.5 1028.2 1029.8 1030.5 DAY 1 16 29 6 12 16 19 19 22 11 29 8 MIN. QNH PRESSURE IN HPA 1001.1 1007.8 1006.6 1016.3 1010.5 1012.9 1011.7 1013.4 1017.0 1017.5 1016.1 1011.3 1001.1 DAY 23 7 24 2 3 27 6 8 12 20 8 24 MEAN QFF PRESSURE IN HPA 1024.8 1022.5 1015.4 1014.8 1010.7 1003.7 999.8 1001.9 1007.8 1016.2 1021.3 1022.2 1013.4 MAX. QFF PRESSURE IN HPA 1040.2 1041.5 1023.6 1028.9 1015.7 1009.3 1004.2 1009.1 1011.7 1029.2 1028.4 1035.3 1041.5 DAY 14 16 26 6 22 7 28 13 28 23 24 31 MIN. QFF PRESSURE IN HPA 1004.6 1007.8 1005.2 1004.8 1001.3 996.5 994.2 993.9 1002.6 1006.8 1012.8 1010.0 993.9 DAY 23 1 24 26 3 20 5 8 12 20 5 24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 809.5 808.0 808.7 812.0 810.6 809.0 808.7 809.5 811.5 814.8 813.7 813.4 810.8 MAX. QFE PRESSURE IN HPA 815.6 815.6 813.0 816.0 814.7 814.0 812.3 812.2 814.0 820.0 817.8 818.9 820.0 DAY 9 16 29 6 13 15 19 16 22 11 23 8 MIN. QFE PRESSURE IN HPA 796.7 801.1 799.4 806.7 801.9 804.2 803.8 805.0 808.2 808.4 807.4 803.9 796.7 DAY 23 7 24 2 5 20 5 8 12 20 8 24 MEAN QNH PRESSURE IN HPA 1019.2 1017.4 1018.4 1022.3 1020.6 1018.7 1018.3 1019.3 1021.7 1025.6 1024.3 1023.9 1020.8 MAX. QNH PRESSURE IN HPA 1026.6 1026.6 1023.5 1027.1 1025.5 1024.7 1022.7 1022.5 1024.7 1031.9 1029.3 1030.6 1031.9 DAY 9 16 29 6 13 15 19 16 22 11 23 8 MIN. QNH PRESSURE IN HPA 1003.8 1009.2 1007.1 1015.9 1010.1 1012.9 1012.4 1013.9 1017.7 1018.0 1016.8 1012.5 1003.8 DAY 23 7 24 2 5 20 5 8 12 20 8 24 MEAN QFF PRESSURE IN HPA 1025.5 1023.7 1015.9 1015.2 1010.6 1003.7 999.7 1002.1 1007.5 1016.4 1021.9 1023.0 1013.8 MAX. QFF PRESSURE IN HPA 1040.5 1039.6 1026.3 1028.8 1016.7 1011.2 1003.7 1009.4 1011.3 1030.6 1028.1 1036.4 1040.5 DAY 14 16 26 6 22 7 19 13 28 23 25 31 MIN. QFF PRESSURE IN HPA 1006.6 1009.8 1005.7 1003.4 1002.1 996.5 994.0 994.2 1002.0 1007.5 1013.3 1012.0 994.0 DAY 23 1 24 26 3 20 5 8 12 20 5 24 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 809.0 807.8 808.1 811.5 810.3 808.4 808.0 808.7 810.6 813.9 812.9 812.7 810.1 MAX. QFE PRESSURE IN HPA 814.8 815.1 812.8 815.3 814.2 813.8 811.6 811.5 813.2 818.8 817.8 818.1 818.8 DAY 9 16 29 22 12 15 19 15 25 11 23 8 MIN. QFE PRESSURE IN HPA 797.9 801.5 799.4 805.4 801.6 803.2 802.8 804.3 807.5 808.1 806.2 804.1 797.9 DAY 23 7 24 2 5 20 5 8 12 20 8 25 MEAN QNH PRESSURE IN HPA 1018.6 1017.2 1017.6 1021.7 1020.2 1017.9 1017.5 1018.3 1020.6 1024.6 1023.3 1023.1 1020.1 MAX. QNH PRESSURE IN HPA 1025.7 1026.0 1023.3 1026.3 1024.9 1024.5 1021.8 1021.7 1023.7 1030.5 1029.3 1029.6 1030.5 DAY 9 16 29 22 12 15 19 15 25 11 23 8 MIN. QNH PRESSURE IN HPA 1005.3 1009.6 1007.1 1014.3 1009.8 1011.7 1011.2 1013.0 1016.9 1017.6 1015.3 1012.8 1005.3 DAY 23 7 24 2 5 20 5 8 12 20 8 25 MEAN QFF PRESSURE IN HPA 1023.8 1022.6 1014.5 1013.9 1009.8 1002.3 998.2 1000.2 1005.8 1014.3 1019.5 1021.0 1012.2 MAX. QFF PRESSURE IN HPA 1038.3 1038.7 1025.7 1025.7 1015.2 1009.2 1002.4 1006.3 1009.2 1027.9 1025.2 1035.0 1038.7 DAY 13 15 26 6 12 7 20 13 25 23 14 31 MIN. QFF PRESSURE IN HPA 1004.5 1008.9 1004.7 1002.5 1002.3 994.5 992.1 992.3 1000.3 1007.4 1009.7 1010.7 992.1 DAY 3 1 24 2 3 20 5 8 12 20 5 25 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 808.2 806.9 807.1 810.4 809.4 807.4 806.9 807.5 809.4 812.9 812.0 811.7 809.1 MAX. QFE PRESSURE IN HPA 814.1 814.4 811.8 815.0 813.0 812.4 810.6 810.3 811.7 817.9 817.3 816.8 817.9 DAY 9 16 28 22 12 15 19 15 22 12 23 7 MIN. QFE PRESSURE IN HPA 799.4 801.1 800.0 804.3 801.0 802.5 801.2 803.5 806.7 808.1 805.9 802.7 799.4 DAY 23 5 24 2 5 20 5 7 5 20 8 25 MEAN QNH PRESSURE IN HPA 1017.8 1016.1 1016.4 1020.3 1019.1 1016.7 1016.1 1016.8 1019.2 1023.4 1022.3 1021.9 1018.8 MAX. QNH PRESSURE IN HPA 1024.8 1025.2 1022.1 1025.9 1023.5 1022.8 1020.6 1020.2 1021.9 1029.4 1028.7 1028.1 1029.4 DAY 9 16 28 22 12 15 19 15 22 12 23 7 MIN. QNH PRESSURE IN HPA 1007.1 1009.2 1007.8 1013.0 1009.0 1010.8 1009.3 1012.0 1015.9 1017.6 1014.9 1011.1 1007.1 DAY 23 5 24 2 5 20 5 7 5 20 8 25 MEAN QFF PRESSURE IN HPA 1022.8 1021.0 1013.1 1012.6 1009.0 1001.4 997.2 999.0 1004.6 1013.4 1018.6 1019.5 1011.0 MAX. QFF PRESSURE IN HPA 1036.8 1036.7 1021.5 1022.6 1013.5 1008.2 1001.6 1004.5 1008.8 1025.4 1024.6 1033.1 1036.8 DAY 13 16 26 5 21 15 19 13 30 23 23 29 MIN. QFF PRESSURE IN HPA 1006.8 1006.5 1004.9 1002.2 1001.6 993.7 989.9 990.9 999.9 1007.9 1008.8 1009.1 989.9 DAY 3 1 10 2 3 20 5 7 12 3 5 16 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 808.7 807.1 807.6 810.5 809.3 807.3 806.6 807.4 809.6 813.2 812.4 812.2 809.3 MAX. QFE PRESSURE IN HPA 814.3 814.4 812.3 815.0 813.7 812.2 810.4 810.0 812.0 818.1 818.1 817.6 818.1 DAY 1 16 28 20 12 15 19 15 22 12 23 7 MIN. QFE PRESSURE IN HPA 799.6 801.2 801.5 804.2 799.0 802.9 801.3 803.4 806.8 807.5 806.3 802.3 799.0 DAY 22 1 24 2 5 20 5 7 5 20 5 23 MEAN QNH PRESSURE IN HPA 1018.3 1016.4 1017.0 1020.5 1019.1 1016.6 1015.8 1016.8 1019.4 1023.7 1022.8 1022.5 1019.1 MAX. QNH PRESSURE IN HPA 1025.1 1025.2 1022.7 1025.9 1024.3 1022.5 1020.4 1019.9 1022.3 1029.6 1029.6 1029.0 1029.6 DAY 1 16 28 20 12 15 19 15 22 12 23 7 MIN. QNH PRESSURE IN HPA 1007.3 1009.3 1009.6 1012.9 1006.6 1011.3 1009.4 1011.9 1016.0 1016.9 1015.4 1010.6 1006.6 DAY 22 1 24 2 5 20 5 7 5 20 5 23 MEAN QFF PRESSURE IN HPA 1024.8 1022.7 1014.9 1013.8 1009.7 1001.9 997.8 1000.1 1006.4 1015.4 1021.0 1022.0 1012.5 MAX. QFF PRESSURE IN HPA 1040.7 1039.9 1021.7 1024.4 1015.1 1007.5 1002.8 1005.5 1011.0 1028.6 1028.2 1034.7 1040.7 DAY 13 16 26 5 12 4 28 12 30 23 23 31 MIN. QFF PRESSURE IN HPA 1010.6 1006.9 1007.4 1002.4 1002.2 995.4 991.3 992.3 1002.2 1008.1 1008.5 1008.2 991.3 DAY 3 1 10 2 5 20 5 7 11 19 5 23 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 809.0 807.6 808.5 811.4 810.5 808.3 807.9 808.8 810.8 814.0 812.8 812.7 810.2 MAX. QFE PRESSURE IN HPA 815.0 814.8 813.3 815.8 814.3 812.6 811.5 811.9 813.3 818.6 818.1 817.8 818.6 DAY 1 16 28 20 17 15 19 12 22 12 23 7 MIN. QFE PRESSURE IN HPA 797.2 800.3 802.8 806.6 802.7 804.1 802.9 804.6 808.0 807.3 806.2 801.2 797.2 DAY 22 1 23 3 5 20 5 7 4 20 5 23 MEAN QNH PRESSURE IN HPA 1018.7 1016.9 1018.1 1021.6 1020.4 1017.9 1017.3 1018.4 1020.8 1024.7 1023.3 1023.1 1020.1 MAX. QNH PRESSURE IN HPA 1025.9 1025.7 1023.9 1026.9 1025.1 1023.0 1021.7 1022.2 1023.9 1030.2 1029.6 1029.3 1030.2 DAY 1 16 28 20 17 15 19 12 22 12 23 7 MIN. QNH PRESSURE IN HPA 1004.4 1008.2 1011.2 1015.8 1011.1 1012.8 1011.3 1013.4 1017.5 1016.6 1015.3 1009.3 1004.4 DAY 22 1 23 3 5 20 5 7 4 20 5 23 MEAN QFF PRESSURE IN HPA 1024.9 1023.2 1015.5 1014.4 1010.4 1002.9 998.8 1001.4 1006.8 1015.6 1021.0 1022.3 1013.1 MAX. QFF PRESSURE IN HPA 1042.5 1039.1 1022.3 1026.4 1015.9 1009.4 1002.8 1009.6 1011.2 1027.8 1028.3 1036.6 1042.5 DAY 13 15 26 5 21 8 19 12 30 23 23 29 MIN. QFF PRESSURE IN HPA 1010.0 1007.5 1007.7 1005.3 1005.4 996.2 994.0 993.3 1000.7 1007.0 1008.6 1007.1 993.3 DAY 22 1 23 25 3 20 5 8 11 19 5 23 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 808.6 807.4 808.3 811.4 810.4 808.6 808.2 809.0 810.8 813.9 812.7 812.7 810.2 MAX. QFE PRESSURE IN HPA 814.7 814.5 813.0 816.0 814.0 813.0 811.4 811.5 813.0 819.0 817.0 818.0 819.0 DAY 8 15 29 20 17 15 19 14 22 12 23 7 MIN. QFE PRESSURE IN HPA 795.8 800.2 801.0 806.8 802.4 804.4 803.5 804.4 808.0 806.9 807.1 801.4 795.8 DAY 22 8 23 2 5 20 5 7 4 20 5 23 MEAN QNH PRESSURE IN HPA 1018.2 1016.8 1017.9 1021.6 1020.4 1018.2 1017.7 1018.7 1020.9 1024.6 1023.1 1023.1 1020.1 MAX. QNH PRESSURE IN HPA 1025.5 1025.3 1023.5 1027.1 1024.7 1023.5 1021.6 1021.7 1023.5 1030.7 1028.3 1029.5 1030.7 DAY 8 15 29 20 17 15 19 14 22 12 23 7 MIN. QNH PRESSURE IN HPA 1002.8 1008.1 1009.0 1016.0 1010.7 1013.1 1012.0 1013.1 1017.5 1016.1 1016.4 1009.5 1002.8 DAY 22 8 23 2 5 20 5 7 4 20 5 23 MEAN QFF PRESSURE IN HPA 1023.4 1022.2 1014.6 1013.7 1010.0 1002.5 998.4 1000.7 1006.2 1014.4 1019.3 1021.3 1012.2 MAX. QFF PRESSURE IN HPA 1039.8 1039.3 1020.6 1026.5 1014.2 1009.7 1002.4 1005.8 1011.8 1026.6 1026.8 1035.0 1039.8 DAY 13 15 26 5 21 8 19 12 30 23 23 29 MIN. QFF PRESSURE IN HPA 1006.1 1009.9 1004.0 1005.1 1002.7 995.9 994.3 992.9 1000.2 1004.8 1010.3 1008.0 992.9 DAY 22 1 23 25 2 20 4 7 11 19 5 23 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1989-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -2.3 -0.4 4.9 11.5 16.4 22.8 26.4 26.3 21.3 14.9 7.1 1.8 12.5 MINIMUN AIR TEMPERATURE (C) -6.8 -6.0 -0.9 4.8 8.6 13.1 16.9 16.7 11.9 7.2 1.5 -3.2 5.3 DAYS WITH MINIMUM TEMP. >=21 0.0 0.0 0.0 0.0 0.0 0.1 1.9 2.3 0.1 0.0 0.0 0.0 4.4 DAYS WITH MINIMUM TEMP. <=-4 19.7 15.6 6.8 0.5 0.0 0.0 0.0 0.0 0.0 0.0 2.2 11.5 56.3 DAYS WITH FREEZING MIN.<= 0 27.6 24.2 18.3 3.1 0.2 0.0 0.0 0.0 0.0 0.6 11.2 22.8 108.0 TEMPERATURE RECORDS LOWEST(C) -26.8 -28.0 -22.6 -9.5 -0.3 4.2 9.4 7.8 3.3 -2.6 -13.0 -27.0 -28.0 YEAR-DAY 90-27 89-16 92-11 97-12 3- 9 0-14 96-15 92-30 89-21 96-28 96-13 90-28 89-16 MAXIMUM AIR TEMPERATURE (C) 1.5 3.3 9.2 16.2 21.3 28.2 32.4 32.4 27.3 20.1 11.5 5.8 17.4 DAYS WITH MAXIMUM TEMP. >=30 0.0 0.0 0.0 0.0 0.2 9.4 27.1 27.8 7.0 0.0 0.0 0.0 71.5 DAYS WITH MAXIMUM TEMP. <= 0 12.5 6.8 1.6 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.1 4.1 25.2 TEMPERATURE RECORDS HIGHEST(C) 13.8 15.4 21.2 27.0 31.0 35.4 38.0 37.0 34.2 28.0 21.0 20.8 38.0 YEAR-DAY 3-12 4-28 1-31 5-24 99-30 0-30 98-12 90-13 89- 3 2- 1 90- 3 98-10 98-12 DIF. BETWEEN (MAX.-MIN.) (C) 8.3 9.3 10.1 11.4 12.7 15.1 15.5 15.7 15.4 12.9 10.0 9.0 12.1 MEAN DAILY TEMP. (MDT) (C) -2.7 -1.3 4.2 10.5 15.0 20.6 24.7 24.6 19.6 13.7 6.5 1.3 11.4 STANDARD DEVIATION OF MDT(C) 2.93 3.22 2.83 1.38 1.29 0.97 0.72 0.87 0.96 1.33 1.40 2.64 1.71 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.6 27.2 115.0 112.9 13.8 0.1 0.0 0.0 269.6 HEATING DEG. DAYS(BASE 18 0C) 640.5 533.3 428.8 226.4 102.9 7.4 0.0 0.3 13.3 136.8 345.5 517.1 2952.3 DEWPOINT (MEAN C) -7.4 -6.6 -4.4 -0.9 1.3 0.7 3.5 1.9 -1.2 -1.5 -1.9 -5.0 -1.8 MIXING RATIO (G/KG) 2.87 3.03 3.60 4.63 5.52 5.26 6.41 5.74 4.55 4.43 4.30 3.43 4.48 VAPOUR PRESSURE (HPA) 3.71 3.91 4.65 5.98 7.12 6.78 8.22 7.39 5.88 5.74 5.58 4.44 5.78 SATURATION DEF. (HPA) 1.86 2.45 4.60 8.36 12.54 22.24 27.85 28.49 20.85 11.99 4.99 2.99 12.43 RELATIVE HUMIDITY (MEAN %) 71 66 57 47 41 27 26 24 25 37 57 65 45 RELATIVE HUMIDITY (MAX. %) 81 79 74 68 62 44 43 39 40 53 74 78 61 RELATIVE HUMIDITY (MIN. %) 60 54 42 32 27 16 15 14 15 25 42 51 33 RELATIVE HUMIDITY (MEAN% 03UTC) 75 73 69 64 59 43 42 38 40 51 70 74 58 RELATIVE HUMIDITY (MEAN% 09UTC) 68 62 50 39 34 22 21 19 20 30 51 59 40 RELATIVE HUMIDITY (MEAN% 15UTC) 70 65 52 41 35 19 17 16 18 32 54 63 40 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 36.6 36.7 66.7 53.2 28.7 4.2 4.8 1.8 1.5 16.6 49.7 38.4 338.9 DAYS WITH PRECIPITATION >=10 1.0 0.9 2.1 1.8 0.7 0.1 0.2 0.1 0.0 0.4 1.5 1.2 10.0 DAYS WITH PRECIPITATION >= 5 2.4 2.7 4.1 3.5 2.4 0.2 0.4 0.1 0.0 1.1 3.1 2.7 22.7 DAYS WITH PRECIPITATION >= 1 6.8 6.2 8.8 7.2 5.4 0.8 0.8 0.4 0.4 2.9 5.7 5.7 51.1 DAYS WITH PRECIPITATION 11.4 10.2 11.8 11.1 8.5 2.0 1.6 0.9 1.3 5.1 8.3 9.9 82.1 GREATEST DAILY PRECIPITATION 41.0 36.0 55.0 42.0 19.0 18.0 18.0 17.0 4.5 22.0 66.0 42.0 66.0 YEAR-DAY 94- 5 91-27 98-18 97- 5 92- 6 94- 5 1-19 98- 4 1-22 99-31 94- 7 2- 9 94 DAY WITH THUNDER STORM 0.1 0.0 0.6 2.8 3.6 1.2 0.8 0.5 0.4 0.8 0.6 0.3 11.7 DAYS WITH SNOW OR SLEET 7.7 7.1 4.3 0.9 0.1 0.0 0.0 0.0 0.0 0.0 1.6 5.1 26.8 DAYS WITH DUST 0.4 0.6 0.9 2.8 4.1 3.4 2.9 2.2 1.8 2.3 0.5 0.4 22.3 WIND DIRECTION (PREVAILING) 225 225 225 225 270 270 135 270 270 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 13.4 14.3 13.9 14.6 12.3 12.0 10.5 11.0 11.5 12.0 13.2 12.4 13.1 PREVAILING WIND PERCENT 19.0 22.8 26.0 27.5 21.2 20.1 15.1 12.7 19.0 19.7 20.4 23.2 19.4 CALMS PERCENT OF WIND 57.5 46.0 35.5 29.6 33.9 37.7 38.7 40.0 43.8 46.2 51.5 50.9 42.6 NO. OF WIND OBSERVATION 172.4 157.1 171.4 171.1 176.9 171.2 176.9 177.4 171.2 176.6 171.2 176.9 2070.3 VECTOR WIND DIRECTION (MEAN) 229 233 238 244 250 249 189 213 249 244 234 231 237 VECTOR WIND MAGNITUDE(KNOTS) 3.5 4.6 5.1 6.2 5.0 3.5 1.9 2.0 3.1 3.7 3.7 3.8 3.7 WIND STEADINESES (MEAN %) 72.9 73.0 68.9 69.7 64.1 52.2 30.6 32.8 51.7 63.8 71.2 74.5 58.7 WIND SPEED (MEAN KNOTS) 4.8 6.3 7.4 8.9 7.8 6.7 6.2 6.1 6.0 5.8 5.2 5.1 6.3 FASTEST WIND DIRECTION 220 210 230 220 270 260 240 90 250 210 220 210 270 FASTEST WIND SPEED (KNOTS) 35 41 41 47 60 35 33 31 33 39 41 43 60 YEAR-DAY 97-27 5- 1 94- 7 92-13 4-10 5-17 4-23 4-30 91-19 3-27 92-23 96-29 4 DAYS WITH SKY CLEAR (0-2)/8 11.2 10.9 10.6 8.8 15.5 26.4 26.3 26.8 27.8 20.8 13.2 11.5 209.8 DAYS WITH P.CLOUDY (3-6)/8 11.0 10.8 12.2 14.9 12.4 3.2 4.5 3.9 2.2 7.6 11.4 12.1 106.2 DAYS WITH CLOUDY (7-8)/8 8.4 6.0 8.1 6.3 3.1 0.4 0.2 0.2 0.1 2.6 5.4 7.4 48.2 DAYS WITH VISIBILITY =< 2 KM 7.7 5.1 3.5 0.9 0.9 0.1 0.1 0.0 0.1 0.3 2.4 4.1 25.2 DURATION OF SUNSHINE HOURS 150.8 180.1 212.0 235.6 297.7 348.0 354.4 341.9 313.7 260.5 182.3 147.6 3024.6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1989-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 809.1 808.1 808.1 809.4 809.9 808.1 807.0 808.5 811.0 813.4 812.5 811.1 809.7 MAX. QFE PRESSURE IN HPA 819.3 819.8 818.6 819.5 818.1 816.1 815.0 816.0 819.9 820.7 822.0 820.0 822.0 YEAR-DAY 95- 7 2- 6 2-11 98-12 98- 8 93-22 0-30 96-29 94-23 95-25 96-18 93-26 96-18 MIN. QFE PRESSURE IN HPA 793.7 794.7 793.1 797.8 797.2 800.5 799.4 801.1 803.0 805.3 796.0 794.5 793.1 YEAR-DAY 92-30 1-21 3-26 2- 3 4-15 99-24 1-17 89- 1 96-21 3-29 1-18 2-21 3-26 MEAN QNH PRESSURE IN HPA 1018.8 1017.6 1017.6 1019.2 1019.7 1017.6 1016.3 1018.1 1021.1 1024.0 1022.8 1021.2 1019.5 MAX. QNH PRESSURE IN HPA 1031.1 1031.7 1030.2 1031.3 1029.6 1027.2 1025.9 1027.1 1031.8 1032.8 1034.3 1031.9 1034.3 YEAR-DAY 95- 7 2- 6 2-11 98-12 98- 8 93-22 0-30 96-29 94-23 95-25 96-18 93-26 96-18 MIN. QNH PRESSURE IN HPA 1000.2 1001.4 999.5 1005.2 1004.4 1008.4 1007.1 1009.2 1011.4 1014.2 1003.0 1001.2 999.5 YEAR-DAY 92-30 1-21 3-26 2- 3 4-15 99-24 1-17 89- 1 96-21 3-29 1-18 2-21 3-26 MEAN QFF PRESSURE IN HPA 1021.5 1019.3 1015.3 1012.0 1009.3 1002.8 999.0 1000.4 1007.5 1014.2 1020.2 1022.2 1012.0 MAX. QFF PRESSURE IN HPA 1042.5 1041.5 1035.3 1028.9 1024.1 1013.1 1007.3 1009.6 1019.7 1030.6 1034.3 1040.3 1042.5 YEAR-DAY 5-13 5-16 3- 2 5- 6 3- 1 3- 6 2-29 5-12 4-30 5-23 3-25 2-14 5-13 MIN. QFF PRESSURE IN HPA 1002.2 1001.4 994.6 999.4 995.3 991.7 989.9 990.9 997.3 1002.6 1001.5 999.9 989.9 YEAR-DAY 3-28 3-20 3-26 3-20 4-15 3-30 5- 5 5- 7 3- 6 3-29 4-23 2-21 5- 5 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 808.7 807.1 808.4 808.7 809.5 808.4 807.6 808.5 811.5 813.8 812.5 810.8 809.6 MAX. QFE PRESSURE IN HPA 817.6 815.0 816.2 815.2 815.5 813.0 811.9 811.5 817.0 818.8 819.2 818.0 819.2 YEAR-DAY 3-12 4-10 4-24 3- 8 3- 1 4- 6 2-29 3- 9 4-28 5-11 2-18 3-12 2-18 MIN. QFE PRESSURE IN HPA 794.7 795.5 797.9 797.8 800.0 803.2 802.2 804.4 807.0 805.3 800.4 796.9 794.7 YEAR-DAY 5-23 3-19 3-13 2- 4 4-13 3-30 3- 1 2-17 3- 7 3-29 4-23 2-21 5-23 MEAN QNH PRESSURE IN HPA 1018.3 1016.4 1018.0 1018.4 1019.3 1017.9 1017.0 1018.1 1021.7 1024.4 1022.9 1020.8 1019.4 MAX. QNH PRESSURE IN HPA 1029.0 1025.9 1027.4 1026.2 1026.5 1023.5 1022.2 1021.7 1028.3 1030.5 1031.0 1029.5 1031.0 YEAR-DAY 3-12 4-10 4-24 3- 8 3- 1 4- 6 2-29 3- 9 4-28 5-11 2-18 3-12 2-18 MIN. QNH PRESSURE IN HPA 1001.4 1002.4 1005.3 1005.2 1007.8 1011.7 1010.5 1013.1 1016.3 1014.2 1008.3 1004.1 1001.4 YEAR-DAY 5-23 3-19 3-13 2- 4 4-13 3-30 3- 1 2-17 3- 7 3-29 4-23 2-21 5-23 MEAN QFF PRESSURE IN HPA 1020.9 1018.4 1014.5 1011.4 1009.0 1002.8 999.0 1000.0 1006.8 1013.5 1019.3 1021.4 1011.4 MAX. QFF PRESSURE IN HPA 1037.5 1035.9 1032.2 1026.3 1021.4 1010.6 1005.8 1007.0 1016.7 1025.1 1030.2 1037.8 1037.8 YEAR-DAY 5-14 5-16 3- 2 5- 6 3- 1 4- 3 2-29 5-13 4-30 5-24 3-25 3-12 3-12 MIN. QFF PRESSURE IN HPA 1005.2 1002.5 1000.5 1002.0 996.7 993.7 992.8 992.3 998.7 1002.6 1002.7 1001.7 992.3 YEAR-DAY 5-23 3-20 3-26 3-21 4-13 3-30 5- 5 5- 8 3- 1 3-29 4-23 2-21 5- 8 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 808.9 808.0 808.1 809.4 810.0 808.7 807.7 809.1 811.4 813.6 812.4 810.9 809.9 MAX. QFE PRESSURE IN HPA 818.1 819.5 817.8 818.7 817.8 815.9 814.3 815.2 818.8 819.5 821.3 819.2 821.3 YEAR-DAY 99- 2 2- 6 2-11 98-12 99-28 93-22 0-30 99-20 94-23 95-25 96-18 98- 9 96-18 MIN. QFE PRESSURE IN HPA 794.4 795.1 796.0 798.0 798.8 801.2 802.2 803.0 803.0 806.0 797.2 795.2 794.4 YEAR-DAY 5-23 1-21 3-26 4-17 4-13 99-25 99-14 94- 2 96-22 96-27 1-18 2-21 5-23 MEAN QNH PRESSURE IN HPA 1018.5 1017.5 1017.5 1019.2 1019.9 1018.3 1017.1 1018.8 1021.6 1024.2 1022.8 1021.0 1019.7 MAX. QNH PRESSURE IN HPA 1029.6 1031.3 1029.3 1030.4 1029.3 1027.0 1025.1 1026.2 1030.5 1031.3 1033.5 1031.0 1033.5 YEAR-DAY 99- 2 2- 6 2-11 98-12 99-28 93-22 0-30 99-20 94-23 95-25 96-18 98- 9 96-18 MIN. QNH PRESSURE IN HPA 1001.1 1001.9 1003.0 1005.4 1006.4 1009.3 1010.5 1011.4 1011.4 1015.1 1004.4 1002.0 1001.1 YEAR-DAY 5-23 1-21 3-26 4-17 4-13 99-25 99-14 94- 2 96-22 96-27 1-18 2-21 5-23 MEAN QFF PRESSURE IN HPA 1023.7 1021.5 1016.8 1013.3 1010.2 1003.8 999.8 1001.8 1008.6 1016.1 1020.4 1022.8 1013.2 MAX. QFF PRESSURE IN HPA 1047.1 1044.6 1044.9 1028.9 1023.0 1015.9 1008.4 1015.0 1021.0 1029.2 1035.2 1052.0 1052.0 YEAR-DAY 92-10 89-17 92-12 5- 6 3- 1 93-22 0-30 92-31 94-23 5-23 96-18 90-28 90-28 MIN. QFF PRESSURE IN HPA 1002.4 1000.1 997.9 1000.4 995.4 992.2 991.5 993.2 998.0 1004.0 999.1 1000.0 991.5 YEAR-DAY 94-16 1-21 3-26 90-29 4-13 99-25 95-22 94- 1 96-22 3-29 1-18 2-21 95-22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1989-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 809.8 809.0 808.9 810.2 810.6 809.0 808.0 809.6 812.1 814.5 813.4 811.9 810.6 MAX. QFE PRESSURE IN HPA 819.3 819.8 818.6 819.5 818.1 816.1 815.0 816.0 819.9 820.7 822.0 820.0 822.0 YEAR-DAY 95- 7 2- 6 2-11 98-12 98- 8 93-22 0-30 96-29 94-23 95-25 96-18 93-26 96-18 MIN. QFE PRESSURE IN HPA 796.7 794.7 793.1 798.9 800.1 802.0 802.6 803.5 805.0 806.7 797.6 795.9 793.1 YEAR-DAY 5-23 1-21 3-26 2- 3 4-13 99-25 3- 1 89- 1 96-22 3-27 1-18 2-21 3-26 MEAN QNH PRESSURE IN HPA 1019.6 1018.6 1018.6 1020.1 1020.6 1018.7 1017.5 1019.4 1022.4 1025.3 1024.0 1022.1 1020.6 MAX. QNH PRESSURE IN HPA 1031.1 1031.7 1030.2 1031.3 1029.6 1027.2 1025.9 1027.1 1031.8 1032.8 1034.3 1031.9 1034.3 YEAR-DAY 95- 7 2- 6 2-11 98-12 98- 8 93-22 0-30 96-29 94-23 95-25 96-18 93-26 96-18 MIN. QNH PRESSURE IN HPA 1003.8 1001.4 999.5 1006.5 1007.9 1010.2 1011.0 1012.0 1013.9 1015.9 1004.9 1002.9 999.5 YEAR-DAY 5-23 1-21 3-26 2- 3 4-13 99-25 3- 1 89- 1 96-22 3-27 1-18 2-21 3-26 MEAN QFF PRESSURE IN HPA 1022.9 1020.6 1016.6 1013.0 1010.1 1003.9 1000.2 1001.8 1008.8 1015.6 1021.7 1023.7 1013.2 MAX. QFF PRESSURE IN HPA 1040.5 1039.6 1035.3 1028.8 1024.1 1013.1 1007.3 1009.4 1019.7 1030.6 1034.3 1039.7 1040.5 YEAR-DAY 5-14 5-16 3- 2 5- 6 3- 1 3- 6 2-29 5-13 4-30 5-23 3-25 2-14 5-14 MIN. QFF PRESSURE IN HPA 1006.6 1001.4 994.6 1000.3 999.0 995.8 993.6 993.8 999.8 1003.9 1001.5 1000.4 993.6 YEAR-DAY 5-23 3-20 3-26 2- 3 4-15 3-30 3- 8 4- 3 3- 6 3-27 4-23 2-21 3- 8 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 809.4 808.8 808.5 809.7 810.2 808.4 807.3 808.8 811.3 813.7 812.7 811.3 810.0 MAX. QFE PRESSURE IN HPA 818.9 819.6 818.2 819.5 817.6 815.5 814.3 814.7 819.2 819.6 821.0 819.4 821.0 YEAR-DAY 95- 7 2- 6 2-11 98-12 98- 8 93-22 0-30 96-29 94-23 95-25 96-18 93-26 96-18 MIN. QFE PRESSURE IN HPA 795.7 795.4 796.4 798.5 799.2 801.7 801.9 802.7 804.7 807.0 796.0 795.3 795.3 YEAR-DAY 3-28 3-19 97-29 2- 3 4-15 94-28 3- 1 94- 1 96-21 95-12 1-18 2-21 2-21 MEAN QNH PRESSURE IN HPA 1019.2 1018.4 1018.1 1019.6 1020.1 1017.9 1016.6 1018.4 1021.4 1024.3 1023.1 1021.4 1019.9 MAX. QNH PRESSURE IN HPA 1030.6 1031.5 1029.8 1031.3 1029.0 1026.5 1025.1 1025.5 1031.0 1031.5 1033.1 1031.2 1033.1 YEAR-DAY 95- 7 2- 6 2-11 98-12 98- 8 93-22 0-30 96-29 94-23 95-25 96-18 93-26 96-18 MIN. QNH PRESSURE IN HPA 1002.6 1002.3 1003.5 1006.0 1006.9 1009.9 1010.1 1011.1 1013.5 1016.3 1003.0 1002.2 1002.2 YEAR-DAY 3-28 3-19 97-29 2- 3 4-15 94-28 3- 1 94- 1 96-21 95-12 1-18 2-21 2-21 MEAN QFF PRESSURE IN HPA 1021.3 1019.4 1015.2 1011.8 1009.2 1002.5 998.7 1000.0 1007.0 1013.6 1019.8 1021.8 1011.7 MAX. QFF PRESSURE IN HPA 1038.3 1038.7 1033.8 1025.7 1022.1 1011.0 1005.2 1006.7 1017.3 1027.9 1031.7 1038.1 1038.7 YEAR-DAY 5-13 5-15 3- 2 5- 6 3- 1 3- 6 3- 3 2-30 4-30 5-23 3-25 2-14 5-15 MIN. QFF PRESSURE IN HPA 1002.9 1001.7 1002.6 1001.4 996.6 994.1 991.8 992.3 998.8 1004.2 1004.7 1000.8 991.8 YEAR-DAY 3-28 3-19 3-12 3-20 4-15 3-30 3- 7 5- 8 3- 6 3-27 4-23 2-21 3- 7 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 808.5 807.7 807.5 808.8 809.3 807.4 806.2 807.6 810.1 812.6 811.7 810.4 809.0 MAX. QFE PRESSURE IN HPA 817.4 818.0 817.4 818.4 816.8 814.1 813.5 813.5 818.0 818.0 819.4 818.4 819.4 YEAR-DAY 94- 9 89-25 90- 9 98-12 98- 8 93-22 0-30 99-20 94-23 93-17 96-18 93-26 96-18 MIN. QFE PRESSURE IN HPA 793.7 796.0 796.2 797.8 797.7 801.0 800.4 801.8 803.3 806.2 796.2 794.5 793.7 YEAR-DAY 92-30 99-20 91- 6 2- 3 4-15 94-28 1-17 89- 1 96-21 95-12 1-18 2-21 92-30 MEAN QNH PRESSURE IN HPA 1018.1 1017.1 1016.8 1018.5 1019.0 1016.7 1015.3 1017.0 1020.0 1023.0 1022.0 1020.4 1018.6 MAX. QNH PRESSURE IN HPA 1028.8 1029.5 1028.8 1030.0 1028.1 1024.8 1024.1 1024.1 1029.5 1029.5 1031.2 1030.0 1031.2 YEAR-DAY 94- 9 89-25 90- 9 98-12 98- 8 93-22 0-30 99-20 94-23 93-17 96-18 93-26 96-18 MIN. QNH PRESSURE IN HPA 1000.2 1003.0 1003.2 1005.2 1005.1 1009.0 1008.3 1010.0 1011.8 1015.3 1003.2 1001.2 1000.2 YEAR-DAY 92-30 99-20 91- 6 2- 3 4-15 94-28 1-17 89- 1 96-21 95-12 1-18 2-21 92-30 MEAN QFF PRESSURE IN HPA 1020.1 1018.1 1013.8 1010.7 1008.3 1001.6 997.6 998.8 1005.8 1012.7 1018.6 1020.6 1010.6 MAX. QFF PRESSURE IN HPA 1036.8 1036.7 1031.6 1022.6 1019.0 1009.8 1003.6 1005.9 1015.1 1025.4 1030.3 1037.1 1037.1 YEAR-DAY 5-13 5-16 3- 2 5- 5 3- 1 4- 5 3- 3 2-30 4-30 5-23 3-25 2-14 2-14 MIN. QFF PRESSURE IN HPA 1002.2 1002.2 999.9 999.4 995.4 991.7 989.9 990.9 997.3 1003.5 1005.1 999.9 989.9 YEAR-DAY 3-28 3-19 3-12 3-20 4-15 3-30 5- 5 5- 7 3- 6 3-27 4-27 2-21 5- 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1989-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 809.0 808.0 807.7 808.9 809.2 807.2 805.9 807.5 810.2 812.8 812.1 810.9 809.1 MAX. QFE PRESSURE IN HPA 817.4 818.7 817.8 817.5 816.0 813.9 813.1 814.6 818.0 818.3 820.0 819.5 820.0 YEAR-DAY 94- 9 98-22 90- 9 98-12 98- 8 93-22 0-30 99-19 94-23 95-25 96-18 3-11 96-18 MIN. QFE PRESSURE IN HPA 794.3 796.0 796.8 798.7 797.2 800.5 799.4 801.1 803.0 807.0 798.6 796.1 794.3 YEAR-DAY 92-30 99-20 91- 6 2- 3 4-15 99-24 1-17 89- 1 96-21 99-31 1-18 2-21 92-30 MEAN QNH PRESSURE IN HPA 1018.6 1017.5 1017.1 1018.6 1018.9 1016.5 1014.9 1016.8 1020.1 1023.3 1022.4 1021.0 1018.8 MAX. QNH PRESSURE IN HPA 1028.8 1030.4 1029.3 1028.9 1027.1 1024.6 1023.6 1025.4 1029.5 1029.9 1031.9 1031.3 1031.9 YEAR-DAY 94- 9 98-22 90- 9 98-12 98- 8 93-22 0-30 99-19 94-23 95-25 96-18 3-11 96-18 MIN. QNH PRESSURE IN HPA 1001.0 1003.0 1004.0 1006.3 1004.4 1008.4 1007.1 1009.2 1011.4 1016.3 1006.1 1003.1 1001.0 YEAR-DAY 92-30 99-20 91- 6 2- 3 4-15 99-24 1-17 89- 1 96-21 99-31 1-18 2-21 92-30 MEAN QFF PRESSURE IN HPA 1023.8 1021.4 1016.2 1012.6 1009.0 1002.0 997.7 999.9 1007.2 1015.2 1020.0 1022.8 1012.3 MAX. QFF PRESSURE IN HPA 1046.4 1046.7 1043.1 1024.8 1021.0 1012.7 1008.6 1012.4 1019.9 1028.6 1034.2 1050.7 1050.7 YEAR-DAY 92- 9 89-16 92-12 96- 4 92- 2 93-22 98-29 92-31 94-23 5-23 96-18 90-28 90-28 MIN. QFF PRESSURE IN HPA 1004.4 1000.9 999.7 1001.0 995.3 992.0 989.3 991.5 997.7 1005.5 1004.5 1002.9 989.3 YEAR-DAY 3-28 99-20 3-12 92-14 4-15 99-24 95-22 89- 1 95- 4 3-27 1-17 2-21 95-22 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 809.0 807.7 809.0 809.4 809.9 808.4 807.5 808.5 811.7 814.1 812.8 811.2 809.9 MAX. QFE PRESSURE IN HPA 817.9 815.2 816.2 817.8 814.3 813.1 811.7 811.9 816.7 818.6 819.7 819.9 819.9 YEAR-DAY 3- 7 4-29 4-23 3- 7 5-17 4- 5 2-28 5-12 2-21 4-26 2-18 3-11 3-11 MIN. QFE PRESSURE IN HPA 797.2 797.3 797.8 799.2 799.2 802.3 802.1 804.1 807.3 806.7 804.8 798.7 797.2 YEAR-DAY 5-22 3-18 3-26 4-16 4-15 3-30 3-25 4- 3 3- 6 3-28 4-23 2-21 5-22 MEAN QNH PRESSURE IN HPA 1018.7 1017.1 1018.6 1019.2 1019.7 1017.9 1016.9 1018.1 1022.0 1024.8 1023.3 1021.3 1019.8 MAX. QNH PRESSURE IN HPA 1029.4 1026.2 1027.4 1029.3 1025.1 1023.6 1021.9 1022.2 1028.0 1030.2 1031.6 1031.8 1031.8 YEAR-DAY 3- 7 4-29 4-23 3- 7 5-17 4- 5 2-28 5-12 2-21 4-26 2-18 3-11 3-11 MIN. QNH PRESSURE IN HPA 1004.4 1004.6 1005.2 1006.9 1006.9 1010.6 1010.4 1012.8 1016.6 1015.9 1013.6 1006.3 1004.4 YEAR-DAY 5-22 3-18 3-26 4-16 4-15 3-30 3-25 4- 3 3- 6 3-28 4-23 2-21 5-22 MEAN QFF PRESSURE IN HPA 1022.4 1020.0 1016.0 1012.7 1009.6 1003.1 999.3 1000.9 1008.0 1014.8 1020.9 1023.1 1012.6 MAX. QFF PRESSURE IN HPA 1042.5 1039.1 1032.5 1026.4 1019.2 1011.3 1006.3 1009.6 1017.7 1027.8 1032.5 1040.3 1042.5 YEAR-DAY 5-13 5-15 3- 1 5- 5 3- 1 4- 5 2-28 5-12 4-30 5-23 3-25 2-14 5-13 MIN. QFF PRESSURE IN HPA 1007.2 1004.4 1001.1 1000.0 997.9 995.5 993.0 993.3 999.6 1005.1 1008.6 1004.9 993.0 YEAR-DAY 3-28 3-19 3-12 4-16 4-15 3-30 3- 7 5- 8 3- 6 3-28 5- 5 2-20 3- 7 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 808.7 807.6 808.8 809.3 810.0 808.6 807.9 808.8 811.8 814.1 812.7 811.0 809.9 MAX. QFE PRESSURE IN HPA 817.6 815.0 816.6 818.0 814.4 814.0 811.9 812.0 817.0 819.0 819.5 818.9 819.5 YEAR-DAY 3-11 4- 9 4-23 3- 7 3-25 4- 5 2-28 3- 8 4-27 5-12 2-18 3-11 2-18 MIN. QFE PRESSURE IN HPA 795.8 797.6 797.2 798.9 801.0 803.0 802.5 804.4 807.6 806.1 802.4 798.0 795.8 YEAR-DAY 5-22 3-19 3-12 2- 3 4-15 3-30 4-10 4- 3 3- 7 3-28 4-22 2-20 5-22 MEAN QNH PRESSURE IN HPA 1018.4 1017.0 1018.4 1019.1 1019.8 1018.2 1017.3 1018.5 1022.1 1024.8 1023.1 1021.1 1019.8 MAX. QNH PRESSURE IN HPA 1029.0 1025.9 1027.8 1029.5 1025.2 1024.7 1022.2 1022.3 1028.3 1030.7 1031.3 1030.6 1031.3 YEAR-DAY 3-11 4- 9 4-23 3- 7 3-25 4- 5 2-28 3- 8 4-27 5-12 2-18 3-11 2-18 MIN. QNH PRESSURE IN HPA 1002.8 1004.9 1004.4 1006.5 1009.0 1011.4 1010.8 1013.1 1017.0 1015.2 1010.7 1005.4 1002.8 YEAR-DAY 5-22 3-19 3-12 2- 3 4-15 3-30 4-10 4- 3 3- 7 3-28 4-22 2-20 5-22 MEAN QFF PRESSURE IN HPA 1021.1 1019.0 1014.9 1011.9 1009.3 1002.8 999.0 1000.4 1007.2 1013.7 1019.8 1022.0 1011.8 MAX. QFF PRESSURE IN HPA 1039.8 1039.3 1032.1 1026.5 1018.9 1011.3 1005.5 1006.5 1017.0 1026.6 1030.6 1038.7 1039.8 YEAR-DAY 5-13 5-15 3- 1 5- 5 3- 1 3- 6 2-29 2-29 4-29 5-23 2-29 2-14 5-13 MIN. QFF PRESSURE IN HPA 1006.1 1003.5 999.5 1001.9 997.6 995.1 993.0 992.9 999.5 1003.5 1005.1 1003.5 992.9 YEAR-DAY 5-22 3-19 3-12 3-20 4-12 3-29 3- 7 5- 7 3- 6 3-28 4-22 2-20 5- 7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 1 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M AVERAGE OF DRY BULB TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** 2.8 13.5 17.7 24.1 27.9 26.7 21.2 16.3 7.8 2.8 ****** 1990 -4.9 -4.1 3.8 10.4 18.3 24.2 26.6 26.4 23.4 14.3 10.2 1.4 12.5 1991 -4.1 -3.3 4.8 12.8 16.0 23.2 27.0 27.1 21.6 13.9 8.3 -2.6 12.1 1992 -8.9 -4.6 -2.8 9.3 13.0 20.7 27.0 23.8 19.7 14.8 7.5 0.0 10.0 1993 -3.3 0.2 4.4 11.2 14.9 22.2 26.0 25.5 22.7 13.9 4.6 3.8 12.2 1994 0.2 0.7 5.2 13.1 16.4 22.5 27.0 26.7 19.6 13.2 7.2 -1.5 12.5 1995 1.5 2.4 6.4 10.3 15.4 20.3 27.5 28.2 21.5 14.1 7.9 -0.0 13.0 1996 -3.8 2.0 3.6 9.6 17.8 22.7 26.3 26.5 22.2 14.5 6.9 4.7 12.8 1997 1.3 -1.0 2.1 10.1 16.4 23.3 27.0 28.1 20.4 15.6 6.1 1.7 12.6 1998 -4.9 -2.3 4.3 12.5 16.9 24.7 26.7 27.0 21.9 15.4 11.0 8.0 13.4 1999 -0.3 3.9 6.0 12.1 19.5 24.9 25.7 27.2 21.6 16.5 6.3 2.2 13.8 2000 -2.1 -1.7 5.7 14.3 19.0 24.1 27.6 27.0 22.0 13.1 5.1 0.8 12.9 2001 -0.8 1.7 9.7 14.3 18.5 24.2 25.9 27.3 21.6 15.4 7.8 4.7 14.2 2002 -3.3 1.5 8.6 9.6 15.8 21.5 24.5 24.5 21.6 16.3 5.8 -0.3 12.2 2003 -0.3 0.6 3.8 11.6 15.0 21.3 25.7 25.2 20.3 16.1 5.6 0.9 12.1 2004 0.6 2.1 8.5 9.3 13.9 21.3 24.2 25.4 20.3 14.9 5.8 -1.1 12.1 2005 -4.1 -4.2 5.7 11.5 14.6 21.7 26.3 24.5 20.4 14.5 6.0 4.3 11.8 MEAN -2.3 -0.4 4.9 11.5 16.4 22.8 26.4 26.3 21.3 14.9 7.1 1.8 12.5 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 2 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M AVERAGE OF MINIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** -14.4 -1.3 5.1 8.8 13.4 17.7 16.8 11.2 7.3 0.1 -5.9 ****** 1990 -10.3 -10.0 -3.0 2.7 7.9 12.3 16.6 15.5 12.5 6.4 3.2 -4.5 4.1 1991 -9.3 -9.4 -1.0 4.5 7.8 12.5 17.0 16.9 11.7 6.9 1.9 -7.1 4.4 1992 -13.5 -9.1 -7.6 2.9 6.3 11.9 17.0 14.0 10.3 5.6 1.0 -3.8 2.9 1993 -7.6 -4.7 -1.4 4.9 8.2 12.3 16.4 16.0 12.8 6.5 0.3 -1.6 5.2 1994 -3.9 -3.8 -0.3 5.9 8.4 13.3 16.9 16.0 10.6 6.2 2.4 -5.9 5.5 1995 -3.9 -2.9 -0.6 4.4 8.3 12.0 17.5 17.6 12.4 4.8 0.7 -5.9 5.4 1996 -7.7 -2.4 -1.3 3.6 10.0 12.9 16.9 16.7 12.5 6.5 -0.5 -0.5 5.6 1997 -4.0 -7.7 -3.0 3.1 8.2 13.5 16.3 17.1 10.9 8.0 1.7 -2.9 5.1 1998 -9.6 -7.1 -0.9 5.0 8.9 14.4 16.8 18.2 12.6 6.3 4.3 1.7 5.9 1999 -4.4 -2.1 -0.8 5.2 9.9 14.5 16.4 18.1 11.2 9.2 1.5 -3.1 6.3 2000 -6.5 -7.7 -1.7 6.5 10.3 12.8 17.3 17.4 12.2 5.8 0.4 -3.1 5.3 2001 -5.8 -3.6 2.6 6.0 9.4 12.9 16.1 17.4 12.5 7.7 1.5 -0.3 6.4 2002 -8.2 -3.8 1.5 5.1 8.9 13.7 16.1 15.5 12.4 9.2 1.4 -3.5 5.7 2003 -3.7 -2.8 -0.8 6.4 7.8 13.2 17.7 16.7 12.1 10.1 1.5 -2.8 6.3 2004 -2.6 -2.3 3.4 3.8 8.2 13.2 16.0 17.2 12.4 8.4 1.9 -4.9 6.2 2005 -7.7 -7.8 1.0 5.8 8.6 13.8 18.5 16.9 12.8 8.2 1.5 0.0 6.0 MEAN -6.8 -6.0 -0.9 4.8 8.6 13.1 16.9 16.7 11.9 7.2 1.5 -3.2 5.3 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 3 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M AVERAGE OF MAXIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** -2.7 5.9 18.3 22.2 29.4 33.4 32.7 26.9 21.9 11.5 7.4 ****** 1990 -0.5 0.9 8.7 15.5 23.7 29.8 32.6 33.3 29.7 19.5 15.4 6.4 17.9 1991 -0.1 1.0 8.7 17.5 21.0 28.7 33.1 33.2 27.6 18.6 13.3 0.8 16.9 1992 -5.3 -1.3 0.6 13.7 17.7 25.4 32.6 30.0 25.0 20.1 12.0 3.0 14.4 1993 -0.1 3.8 8.6 15.3 18.9 27.0 31.2 30.9 28.5 18.6 8.8 8.4 16.7 1994 3.5 4.6 9.2 17.9 20.9 27.8 33.2 32.9 25.3 17.8 10.9 2.2 17.2 1995 6.2 6.7 11.2 14.8 19.6 25.0 33.1 33.7 26.7 19.5 12.5 4.3 17.8 1996 -0.4 5.9 7.6 14.2 22.3 27.8 31.3 31.6 27.5 19.5 11.6 8.3 17.3 1997 5.2 3.6 5.6 14.1 20.9 27.8 32.8 34.1 25.6 20.0 9.6 4.9 17.0 1998 -1.5 1.0 8.2 17.0 21.4 29.6 32.2 32.0 27.3 21.0 15.5 12.7 18.0 1999 3.4 8.1 10.7 16.2 24.0 29.6 31.3 32.3 27.3 20.9 10.5 6.9 18.4 2000 1.2 2.5 10.2 18.4 23.6 29.6 33.0 32.3 27.6 17.8 8.9 4.0 17.4 2001 2.8 5.3 14.2 19.0 23.1 29.5 31.7 32.6 27.0 20.1 12.0 8.4 18.8 2002 0.5 5.3 13.2 14.4 21.8 27.8 31.6 32.5 29.3 22.7 10.6 3.1 17.7 2003 3.7 4.7 9.2 16.8 21.2 28.0 33.4 32.7 27.7 22.0 10.5 4.7 17.9 2004 4.7 6.6 14.3 14.7 19.5 28.2 31.4 33.0 27.8 21.2 10.6 3.5 18.0 2005 0.2 0.4 10.9 17.4 20.9 28.2 33.5 31.8 27.8 20.8 11.4 9.7 17.7 MEAN 1.5 3.3 9.2 16.2 21.3 28.2 32.4 32.4 27.3 20.1 11.5 5.8 17.4 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 4 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M DIFFERENCE BETWEEN AVERAGE MAXIMUM AND MINIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** 11.7 7.2 13.2 13.4 16.0 15.7 15.9 15.7 14.6 11.4 13.3 ****** 1990 9.8 10.9 11.7 12.8 15.8 17.5 16.0 17.8 17.2 13.1 12.2 10.9 13.8 1991 9.2 10.4 9.7 13.0 13.2 16.2 16.1 16.3 15.9 11.7 11.4 7.9 12.5 1992 8.2 7.8 8.2 10.8 11.4 13.5 15.6 16.0 14.7 14.5 11.0 6.8 11.5 1993 7.5 8.5 10.0 10.4 10.7 14.7 14.8 14.9 15.7 12.1 8.5 10.0 11.5 1994 7.4 8.4 9.5 12.0 12.5 14.5 16.3 16.9 14.7 11.6 8.5 8.1 11.7 1995 10.1 9.6 11.8 10.4 11.3 13.0 15.6 16.1 14.3 14.7 11.8 10.2 12.4 1996 7.3 8.3 8.9 10.6 12.3 14.9 14.4 14.9 15.0 13.0 12.1 8.8 11.7 1997 9.2 11.3 8.6 11.0 12.7 14.3 16.5 17.0 14.7 12.0 7.9 7.8 11.9 1998 8.1 8.1 9.1 12.0 12.5 15.2 15.4 13.8 14.7 14.7 11.2 11.0 12.1 1999 7.8 10.2 11.5 11.0 14.1 15.1 14.9 14.2 16.1 11.7 9.0 10.0 12.1 2000 7.7 10.2 11.9 11.9 13.3 16.8 15.7 14.9 15.4 12.0 8.5 7.1 12.1 2001 8.6 8.9 11.6 13.0 13.7 16.6 15.6 15.2 14.5 12.4 10.5 8.7 12.4 2002 8.7 9.1 11.7 9.3 12.9 14.1 15.5 17.0 16.9 13.5 9.2 6.6 12.0 2003 7.4 7.5 10.0 10.4 13.4 14.8 15.7 16.0 15.6 11.9 9.0 7.5 11.6 2004 7.3 8.9 10.9 10.9 11.3 15.0 15.4 15.8 15.4 12.8 8.7 8.4 11.8 2005 7.9 8.2 9.9 11.6 12.3 14.4 15.0 14.9 15.0 12.6 9.9 9.7 11.7 MEAN 8.3 9.3 10.1 11.4 12.7 15.1 15.5 15.7 15.4 12.9 10.0 9.0 12.1 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 5 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M AVERAGE OF MEAN DAILY TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** -8.6 2.3 11.7 15.5 21.4 25.5 24.7 19.0 14.6 5.8 0.7 ****** 1990 -5.4 -4.6 2.8 9.1 15.8 21.1 24.6 24.4 21.1 12.9 9.3 0.9 11.0 1991 -4.7 -4.2 3.9 11.0 14.4 20.6 25.0 25.0 19.6 12.7 7.6 -3.2 10.7 1992 -9.4 -5.2 -3.5 8.3 12.0 18.7 24.8 22.0 17.6 12.8 6.5 -0.4 8.7 1993 -3.9 -0.4 3.6 10.1 13.5 19.6 23.8 23.5 20.6 12.6 4.5 3.4 10.9 1994 -0.2 0.4 4.4 11.9 14.7 20.5 25.0 24.5 18.0 12.0 6.6 -1.8 11.3 1995 1.2 1.9 5.3 9.6 14.0 18.5 25.3 25.6 19.5 12.1 6.6 -0.8 11.6 1996 -4.0 1.8 3.1 8.9 16.2 20.4 24.1 24.1 20.0 13.0 5.6 3.9 11.4 1997 0.6 -2.0 1.3 8.6 14.5 20.7 24.5 25.6 18.2 14.0 5.7 1.0 11.1 1998 -5.5 -3.0 3.7 11.0 15.2 22.0 24.5 25.1 19.9 13.7 9.9 7.2 12.0 1999 -0.5 3.0 4.9 10.7 17.0 22.0 23.8 25.2 19.3 15.0 6.0 1.9 12.4 2000 -2.6 -2.6 4.3 12.5 17.0 21.2 25.2 24.8 19.9 11.8 4.7 0.5 11.4 2001 -1.5 0.8 8.4 12.5 16.3 21.2 23.9 25.0 19.7 13.9 6.8 4.0 12.6 2002 -3.9 0.8 7.3 9.7 15.4 20.8 23.8 24.0 20.8 15.9 6.0 -0.2 11.7 2003 -0.0 1.0 4.2 11.6 14.5 20.6 25.5 24.7 19.9 16.1 6.0 1.0 12.1 2004 1.1 2.1 8.8 9.3 13.9 20.7 23.7 25.1 20.1 14.8 6.3 -0.7 12.1 2005 -3.8 -3.7 5.9 11.6 14.7 21.0 26.0 24.3 20.3 14.5 6.5 4.9 11.8 MEAN -2.7 -1.3 4.2 10.5 15.0 20.6 24.7 24.6 19.6 13.7 6.5 1.3 11.4 SD 2.93 3.22 2.83 1.38 1.29 0.97 0.72 0.87 0.96 1.33 1.40 2.64 1.71 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 6 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M TEMPERATURE RECORDS LOWEST IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** -28.0 -8.0 -1.0 3.0 7.0 12.4 10.4 3.3 -2.0 -8.0 -16.0 ****** DAY ** 16 30 2 14 12 26 2 21 24 22 6 1990 -26.8 -18.0 -13.0 -4.0 3.0 6.0 10.0 11.0 11.0 1.0 -4.0 -27.0 -27.0 DAY 27 1 17 5 8 1 5 9 2 15 14 28 1991 -18.0 -20.0 -10.0 -1.0 0.0 9.0 12.0 11.4 3.4 3.8 -5.8 -19.8 -20.0 DAY 1 10 10 13 6 1 8 27 27 30 27 18 1992 -25.4 -19.8 -22.6 -3.2 -0.2 8.0 11.2 7.8 3.8 1.4 -8.6 -13.6 -25.4 DAY 29 17 11 3 5 6 12 30 29 31 27 29 1993 -21.8 -14.6 -9.4 0.0 2.0 7.2 11.4 12.4 7.4 1.4 -10.8 -8.6 -21.8 DAY 21 16 23 13 1 22 31 23 25 7 14 13 1994 -12.4 -14.0 -9.8 -2.4 1.4 6.4 12.0 11.8 7.2 1.2 -3.6 -17.0 -17.0 DAY 11 20 15 5 7 29 1 25 25 12 9 7 1995 -10.0 -9.8 -4.8 -1.0 0.2 8.0 11.0 13.6 5.2 -0.6 -10.0 -14.6 -14.6 DAY 7 26 28 7 9 1 3 24 22 18 26 15 1996 -20.6 -8.8 -8.8 -2.8 5.2 7.4 9.4 12.2 7.2 -2.6 -13.0 -6.2 -20.6 DAY 25 29 17 4 12 6 15 27 10 28 13 3 1997 -15.6 -19.5 -13.0 -9.5 1.2 8.4 12.2 12.4 4.4 2.4 -2.4 -12.6 -19.5 DAY 29 6 8 12 5 4 18 15 15 24 25 16 1998 -19.6 -16.0 -8.6 -1.0 3.2 10.4 12.6 13.2 8.2 2.0 -2.6 -4.0 -19.6 DAY 10 17 3 25 5 3 26 5 23 25 14 5 1999 -14.4 -9.8 -5.4 1.0 2.2 11.0 11.0 13.2 5.4 2.6 -8.0 -14.6 -14.6 DAY 23 7 5 11 21 17 13 21 28 14 30 6 2000 -21.2 -20.8 -8.0 0.4 3.3 4.2 14.0 10.4 10.0 0.0 -2.4 -13.0 -21.2 DAY 31 4 9 11 10 14 28 30 1 29 29 29 2001 -19.2 -11.0 -4.0 0.4 3.4 6.6 12.6 13.0 8.2 1.8 -9.6 -8.4 -19.2 DAY 28 12 12 13 6 13 21 12 21 27 20 22 2002 -19.8 -11.8 -5.6 0.2 3.2 7.4 12.6 10.5 9.5 3.5 -5.5 -17.3 -19.8 DAY 25 4 1 1 14 8 1 31 10 23 30 14 2003 -13.1 -9.6 -10.6 -1.6 -0.3 7.3 13.0 14.4 8.0 6.0 -4.2 -11.0 -13.1 DAY 18 18 2 2 9 7 1 2 23 7 23 12 2004 -12.6 -8.6 -7.6 -3.9 3.7 7.2 11.5 14.0 6.5 2.8 -6.8 -15.5 -15.5 DAY 30 24 16 6 14 3 13 13 29 24 25 18 2005 -18.6 -23.0 -7.0 -4.2 0.8 9.4 16.0 12.4 9.0 -2.2 -3.7 -8.5 -23.0 DAY 14 12 26 6 6 9 6 13 28 23 12 27 1989-2005 -26.8 -28.0 -22.6 -9.5 -0.3 4.2 9.4 7.8 3.3 -2.6 -13.0 -27.0 -28.0 YEAR-DAY 90-27 89-16 92-11 97-12 3- 9 0-14 96-15 92-30 89-21 96-28 96-13 90-28 89 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 7 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M TEMPERATURE RECORDS HIGHEST IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** 6.6 14.4 22.6 28.0 35.0 37.2 35.0 34.2 27.0 16.0 13.0 ****** DAY ** 28 25 16 24 29 11 15 3 6 28 24 1990 5.0 6.0 15.0 25.0 30.0 34.0 36.0 37.0 32.0 24.0 21.0 17.0 37.0 DAY 1 18 23 27 24 25 16 13 9 1 3 2 1991 6.0 11.0 18.0 24.0 25.0 34.0 37.0 37.0 33.6 22.8 20.2 10.8 37.0 DAY 21 26 30 25 1 30 30 9 1 7 3 9 1992 1.8 5.4 10.4 19.6 26.2 32.4 35.0 34.6 27.8 23.8 17.6 11.0 35.0 DAY 20 24 29 12 29 30 27 5 3 3 20 12 1993 7.4 13.6 18.0 23.6 24.6 33.4 34.4 33.6 32.6 25.0 15.6 12.8 34.4 DAY 8 28 31 19 19 30 15 14 1 1 8 23 1994 11.4 9.0 17.2 24.2 28.6 31.0 36.0 35.2 30.8 23.0 14.6 8.6 36.0 DAY 2 27 31 22 31 11 29 5 1 1 21 28 1995 11.0 13.6 16.4 19.8 24.8 30.2 36.6 35.8 31.6 25.4 19.2 11.2 36.6 DAY 30 21 24 30 25 21 18 1 1 2 1 31 1996 11.4 12.8 16.2 20.2 27.8 30.4 33.2 34.2 31.2 25.6 19.0 14.0 34.2 DAY 1 9 30 30 31 18 1 21 15 3 5 28 1997 11.8 11.4 14.4 25.4 27.8 31.6 37.6 36.2 29.0 24.2 13.8 12.0 37.6 DAY 6 18 31 25 28 29 28 18 2 6 2 8 1998 4.0 7.8 15.0 24.2 28.6 33.8 38.0 35.4 33.6 26.4 19.2 20.8 38.0 DAY 25 7 16 15 28 28 12 31 1 5 21 10 1999 8.8 13.4 18.4 22.8 31.0 32.6 35.6 34.8 31.0 26.6 16.0 15.0 35.6 DAY 8 26 31 30 30 20 5 27 4 4 19 30 2000 13.4 11.0 17.0 22.3 27.6 35.4 35.6 34.2 33.0 22.4 14.6 10.2 35.6 DAY 1 24 22 28 25 30 2 2 9 7 4 1 2001 10.8 13.6 21.2 23.6 28.4 35.0 34.4 36.2 30.4 26.0 20.8 14.2 36.2 DAY 17 28 31 5 15 24 5 4 4 5 5 29 2002 12.0 11.0 19.8 23.4 27.4 31.8 34.6 36.0 33.0 28.0 17.8 10.4 36.0 DAY 1 23 13 28 28 29 21 10 2 1 11 8 2003 13.8 9.8 16.0 23.8 25.6 32.2 36.5 36.1 32.4 26.0 17.0 12.2 36.5 DAY 12 24 25 9 22 23 13 13 3 11 5 18 2004 9.5 15.4 21.0 21.4 26.0 32.0 35.4 36.6 32.6 25.8 15.5 8.4 36.6 DAY 12 28 5 22 28 20 30 18 2 10 1 1 2005 7.6 10.0 18.5 27.0 25.6 32.2 36.8 36.2 30.8 26.0 20.6 18.3 36.8 DAY 1 28 31 24 29 25 10 7 11 11 1 3 1989-2005 13.8 15.4 21.2 27.0 31.0 35.4 38.0 37.0 34.2 28.0 21.0 20.8 38.0 YEAR-DAY 3-12 4-28 1-31 5-24 99-30 0-30 98-12 90-13 89- 3 2- 1 90- 3 98-10 98 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 8 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M 0C COOLING DEGREE DAYS (BASE 21) YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** 0.0 0.0 0.0 0.9 44.6 140.6 115.0 25.7 1.5 0.0 0.0 ****** 1990 0.0 0.0 0.0 0.0 0.0 32.0 113.7 105.0 15.0 0.0 0.0 0.0 265.7 1991 0.0 0.0 0.0 0.0 0.0 24.5 119.5 127.2 17.8 0.0 0.0 0.0 289.0 1992 0.0 0.0 0.0 0.0 0.0 6.8 118.4 52.9 0.0 0.0 0.0 0.0 178.1 1993 0.0 0.0 0.0 0.0 0.0 14.5 87.1 77.2 20.1 0.0 0.0 0.0 198.9 1994 0.0 0.0 0.0 0.0 0.0 22.5 127.8 107.9 4.5 0.0 0.0 0.0 262.7 1995 0.0 0.0 0.0 0.0 0.0 5.5 137.1 143.6 19.2 0.0 0.0 0.0 305.4 1996 0.0 0.0 0.0 0.0 0.3 17.4 97.4 97.3 11.6 0.0 0.0 0.0 224.0 1997 0.0 0.0 0.0 0.0 0.0 24.8 111.3 143.1 4.0 0.0 0.0 0.0 283.2 1998 0.0 0.0 0.0 0.0 0.0 43.3 109.9 129.6 12.9 0.0 0.0 0.0 295.7 1999 0.0 0.0 0.0 0.0 6.4 41.0 93.7 130.3 8.7 0.0 0.0 0.0 280.1 2000 0.0 0.0 0.0 0.0 0.1 35.3 129.1 120.7 10.7 0.0 0.0 0.0 296.0 2001 0.0 0.0 0.0 0.0 1.8 45.2 95.9 125.1 7.3 0.0 0.0 0.0 275.3 2002 0.0 0.0 0.0 0.0 0.9 24.8 88.3 93.8 17.4 0.0 0.0 0.0 225.3 2003 0.0 0.0 0.0 0.0 0.0 23.9 140.0 115.4 18.8 0.0 0.0 0.0 298.2 2004 0.0 0.0 0.0 0.0 0.0 27.8 89.9 126.7 29.3 0.9 0.0 0.0 274.6 2005 0.0 0.0 0.0 0.0 0.0 28.9 155.1 108.4 11.1 0.0 0.0 0.0 303.6 MEAN 0.0 0.0 0.0 0.0 0.6 27.2 115.0 112.9 13.8 0.1 0.0 0.0 269.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 9 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M 0C HEATING DEGREE DAYS (BASE 18) YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** 531.3 486.4 189.7 92.9 7.5 0.0 0.0 32.8 115.1 365.8 534.8 ****** 1990 725.7 632.5 470.2 268.0 83.4 2.0 0.0 0.0 0.0 157.7 260.0 530.0 3129.5 1991 703.1 622.0 438.6 209.3 112.5 2.5 0.0 0.0 20.3 162.9 311.9 656.3 3239.4 1992 848.2 672.6 666.9 291.6 189.7 18.1 0.0 5.2 27.5 160.2 345.3 569.8 3795.2 1993 678.0 515.5 445.8 238.9 139.8 15.3 0.0 0.0 6.4 169.3 404.2 452.9 3066.1 1994 564.5 492.2 420.2 184.2 109.1 9.7 0.0 0.0 26.7 185.8 340.7 614.2 2947.3 1995 521.7 450.6 392.9 253.2 125.0 21.5 0.0 0.0 25.7 182.0 341.7 582.3 2896.6 1996 683.2 470.9 460.6 272.5 69.3 5.9 0.0 0.0 8.8 156.0 373.2 435.8 2936.3 1997 540.1 561.3 516.4 282.5 113.3 4.1 0.0 0.0 20.3 126.0 370.4 527.1 3061.6 1998 729.6 589.4 444.8 210.2 97.1 0.7 0.0 0.0 4.1 135.5 242.8 334.2 2788.4 1999 573.6 419.6 404.7 218.9 58.3 0.0 0.0 0.0 17.9 99.9 361.1 499.4 2653.4 2000 639.6 598.1 426.1 166.4 47.1 9.1 0.0 0.0 5.4 192.4 400.2 543.9 3028.4 2001 604.7 480.9 298.8 164.3 72.8 11.6 0.0 0.0 6.6 128.2 337.2 432.7 2537.8 2002 677.8 482.7 330.7 247.7 95.9 3.6 0.0 0.0 0.0 76.7 359.5 563.3 2838.0 2003 559.0 477.3 426.7 194.6 108.4 7.6 0.0 0.0 8.6 61.0 360.1 528.2 2731.5 2004 524.7 460.1 284.9 261.6 133.1 2.6 0.0 0.0 9.6 105.8 352.3 579.3 2714.1 2005 675.1 608.6 374.1 195.0 101.3 4.8 0.0 0.0 5.6 111.6 346.0 406.9 2829.0 MEAN 640.5 533.3 428.8 226.4 102.9 7.4 0.0 0.3 13.3 136.8 345.5 517.1 2952.3 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 10 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M AVERAGE OF DEW POINT TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** -1.7 -0.8 0.3 -1.8 1.3 1.3 -0.2 0.0 0.8 -2.5 ****** 1990 -8.1 -7.1 -2.3 1.8 9.3 3.0 8.1 5.3 2.2 0.6 -2.4 -7.8 0.2 1991 -8.4 -7.9 -1.8 -0.1 0.8 4.8 6.4 8.5 -0.1 0.5 -1.5 -6.5 -0.4 1992 -13.1 -9.3 -6.8 -1.2 2.3 2.9 2.2 2.6 -3.5 -4.0 -4.0 -6.7 -3.2 1993 -9.7 -7.5 -7.0 -2.0 3.1 4.0 7.5 3.1 0.5 -1.1 -0.6 -2.4 -1.0 1994 -4.2 -6.7 -2.7 0.3 1.8 1.7 6.0 2.9 1.3 2.1 0.0 -8.3 -0.5 1995 -5.3 -4.6 -3.3 1.4 4.4 5.3 4.9 3.2 2.2 -3.9 -5.7 -8.2 -0.8 1996 -8.9 -2.8 -3.0 -0.9 2.4 0.3 2.3 -0.4 -2.2 -2.0 -3.5 -3.4 -1.8 1997 -7.0 -9.3 -5.1 -2.6 0.9 -0.1 2.0 -1.1 -2.6 -0.7 0.5 -3.9 -2.4 1998 -9.1 -6.9 -3.7 -0.7 3.2 1.2 3.3 3.5 0.7 -2.0 -2.3 -5.2 -1.5 1999 -5.0 -6.0 -6.1 -3.0 -2.5 -3.1 2.6 1.5 -2.1 -2.4 -2.6 -4.8 -2.8 2000 -8.1 -8.1 -6.6 -1.8 -2.6 -3.1 -0.0 -0.7 -2.7 -1.3 -1.1 -3.2 -3.3 2001 -6.4 -5.1 -4.7 -3.1 -4.3 -2.0 3.2 -0.8 -0.5 -2.2 -3.7 -3.1 -2.7 2002 -7.5 -5.8 -5.8 -0.2 -1.5 -1.8 2.2 -0.3 -3.5 -2.3 -1.2 -4.7 -2.7 2003 -6.0 -5.0 -4.0 -0.5 0.5 1.0 1.1 -0.4 -4.2 -1.0 -1.9 -3.3 -2.0 2004 -4.2 -6.1 -5.4 -0.9 2.7 0.2 1.8 -0.4 -3.6 -2.7 -0.1 -6.4 -2.1 2005 -8.1 -7.9 -4.3 -1.1 1.7 0.2 4.2 4.1 -2.4 -3.8 -2.3 -4.1 -2.0 MEAN -7.4 -6.6 -4.4 -0.9 1.3 0.7 3.5 1.9 -1.2 -1.5 -1.9 -5.0 -1.8 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 11 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M AVERAGE OF MIXING RATIO IN G/KG YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** 4.28 4.59 5.04 4.28 5.38 5.42 4.72 4.83 5.14 4.01 ***** 1990 2.77 2.91 4.13 5.67 9.80 6.09 8.57 7.23 5.81 5.20 4.05 2.91 5.43 1991 2.61 2.80 4.33 4.87 5.14 6.93 7.74 8.81 4.94 5.07 4.30 3.12 5.06 1992 1.88 2.51 3.09 4.50 5.75 5.99 5.71 5.95 3.72 3.62 3.74 3.04 4.13 1993 2.38 2.81 2.94 4.23 6.04 6.38 8.26 6.02 5.02 4.44 4.72 4.03 4.77 1994 3.61 2.98 4.00 4.98 5.48 5.49 7.44 6.16 5.43 5.83 4.96 2.72 4.92 1995 3.27 3.47 3.87 5.42 6.63 7.07 6.90 6.07 5.68 3.67 3.35 2.61 4.83 1996 2.56 3.93 3.90 4.58 5.87 5.17 5.79 4.89 4.19 4.19 3.79 3.76 4.38 1997 2.89 2.50 3.37 4.10 5.20 4.90 5.82 4.53 4.02 4.62 4.98 3.64 4.21 1998 2.52 2.94 3.78 4.62 6.06 5.30 6.29 6.32 5.15 4.20 4.15 3.31 4.55 1999 3.40 3.12 3.14 4.01 4.08 3.94 6.07 5.45 4.23 4.12 4.04 3.42 4.09 2000 2.71 2.72 3.07 4.35 4.11 4.01 5.00 4.75 4.11 4.53 4.50 3.82 3.97 2001 3.06 3.32 3.48 3.97 3.73 4.40 6.32 4.69 4.80 4.31 3.75 3.97 4.15 2002 2.88 3.15 3.29 4.87 4.40 4.26 5.83 4.94 3.76 4.12 4.50 3.49 4.12 2003 3.11 3.33 3.64 4.80 5.14 5.29 5.53 4.84 3.64 4.65 4.23 3.83 4.34 2004 3.54 3.10 3.29 4.59 5.89 5.03 5.76 4.83 3.83 4.04 4.92 3.04 4.32 2005 2.72 2.83 3.64 4.58 5.53 4.95 6.58 6.71 4.23 3.80 4.07 3.59 4.44 MEAN 2.87 3.03 3.60 4.63 5.52 5.26 6.41 5.74 4.55 4.43 4.30 3.43 4.48 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 12 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M AVERAGE OF VAPOUR PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** 5.53 5.95 6.51 5.52 6.92 6.98 6.11 6.27 6.65 5.19 ***** 1990 3.58 3.76 5.35 7.30 12.53 7.83 10.97 9.28 7.49 6.73 5.26 3.77 6.99 1991 3.38 3.62 5.58 6.29 6.62 8.91 9.90 11.27 6.39 6.58 5.58 4.03 6.51 1992 2.43 3.24 3.99 5.80 7.42 7.71 7.34 7.66 4.83 4.70 4.85 3.93 5.33 1993 3.08 3.63 3.79 5.46 7.79 8.21 10.59 7.76 6.49 5.77 6.10 5.23 6.16 1994 4.67 3.85 5.17 6.43 7.07 7.06 9.52 7.91 7.03 7.56 6.41 3.53 6.35 1995 4.24 4.48 4.99 6.98 8.56 9.09 8.83 7.81 7.32 4.76 4.34 3.39 6.23 1996 3.32 5.07 5.02 5.91 7.57 6.65 7.46 6.29 5.42 5.43 4.93 4.88 5.66 1997 3.74 3.23 4.33 5.29 6.72 6.32 7.46 5.83 5.21 6.00 6.45 4.71 5.44 1998 3.25 3.80 4.87 5.97 7.82 6.84 8.07 8.13 6.65 5.46 5.39 4.30 5.88 1999 4.39 4.03 4.06 5.18 5.28 5.08 7.79 7.03 5.46 5.35 5.24 4.45 5.28 2000 3.50 3.52 3.96 5.62 5.30 5.17 6.43 6.13 5.31 5.87 5.83 4.94 5.13 2001 3.96 4.30 4.50 5.14 4.81 5.66 8.11 6.06 6.21 5.59 4.86 5.15 5.36 2002 3.72 4.08 4.25 6.27 5.68 5.49 7.49 6.35 4.88 5.35 5.83 4.50 5.33 2003 4.03 4.30 4.69 6.19 6.64 6.80 7.09 6.24 4.71 6.02 5.49 4.97 5.60 2004 4.57 4.01 4.27 5.92 7.58 6.48 7.40 6.22 4.97 5.26 6.37 3.93 5.58 2005 3.52 3.66 4.70 5.93 7.14 6.38 8.45 8.62 5.47 4.94 5.27 4.66 5.73 MEAN 3.71 3.91 4.65 5.98 7.12 6.78 8.22 7.39 5.88 5.74 5.58 4.44 5.78 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 13 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M AVERAGE OF SATURATION DEFICIT PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** 2.24 10.18 14.68 26.00 32.26 29.53 20.84 13.35 4.18 2.47 ***** 1990 0.97 0.97 3.16 6.24 9.60 23.70 25.59 27.12 22.69 10.26 7.72 4.32 11.86 1991 1.33 1.59 3.66 9.31 12.37 20.85 27.43 26.49 21.12 9.88 5.91 1.48 11.78 1992 0.97 1.37 1.39 6.47 8.45 17.77 29.97 23.57 19.28 12.86 6.08 2.46 10.89 1993 2.01 2.92 5.07 8.45 9.80 19.75 24.44 26.31 22.57 10.81 2.86 3.06 11.51 1994 1.93 2.78 4.09 9.41 12.64 21.50 28.12 29.07 17.06 8.16 4.04 2.27 11.76 1995 2.88 3.02 5.01 5.98 9.73 15.64 29.84 32.20 19.84 12.28 6.99 3.01 12.20 1996 1.76 2.27 3.15 6.65 13.72 22.08 27.88 29.82 22.72 12.06 5.57 3.95 12.64 1997 3.34 2.84 3.14 8.17 12.84 23.37 30.18 34.16 19.91 12.47 3.21 2.43 13.00 1998 1.23 1.60 3.88 9.38 12.40 25.65 28.68 28.97 21.00 13.10 8.29 6.98 13.43 1999 1.83 4.38 5.72 9.56 18.57 27.59 26.96 30.27 21.82 14.29 4.77 3.15 14.08 2000 2.16 2.39 5.74 11.22 17.49 26.50 32.03 30.86 22.48 9.82 3.14 1.77 13.80 2001 2.14 2.88 8.20 11.88 17.46 26.28 26.94 31.85 20.69 12.69 6.46 3.66 14.26 2002 1.59 3.06 7.53 6.19 13.21 21.12 24.44 25.86 22.11 14.07 3.80 1.75 12.06 2003 2.35 2.25 3.70 8.12 11.10 19.64 27.37 27.29 20.36 12.81 3.96 1.84 11.73 2004 1.99 3.43 7.78 6.36 8.98 19.95 24.19 27.56 20.27 12.40 3.30 1.91 11.51 2005 1.31 1.37 4.79 8.61 10.24 20.70 27.18 23.45 19.61 12.51 4.56 4.28 11.55 MEAN 1.86 2.45 4.60 8.36 12.54 22.24 27.85 28.49 20.85 11.99 4.99 2.99 12.43 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 14 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M AVERAGE OF RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** 76 41 35 20 20 22 27 37 63 70 *** 1990 80 80 68 57 58 27 33 30 27 42 43 54 50 1991 74 72 66 45 38 33 30 33 27 44 53 76 49 1992 73 71 76 53 53 34 22 29 22 29 47 62 48 1993 63 58 47 45 48 32 32 25 24 38 72 67 46 1994 75 60 60 45 40 29 30 25 33 53 63 62 48 1995 63 63 54 59 52 42 26 22 31 33 41 57 45 1996 69 73 65 53 41 27 24 20 22 36 52 59 45 1997 57 55 63 46 39 24 24 17 25 37 70 69 44 1998 74 73 61 44 43 24 26 26 28 35 44 44 44 1999 73 52 46 39 26 18 27 22 24 32 57 64 40 2000 67 65 46 36 27 20 19 19 23 43 68 76 42 2001 70 65 41 35 26 22 28 19 27 36 49 61 40 2002 75 62 41 55 36 23 27 23 20 32 65 74 44 2003 71 68 60 49 41 29 24 21 22 35 62 75 46 2004 73 58 43 53 51 28 28 21 23 33 68 70 46 2005 77 77 54 46 46 27 26 31 25 32 60 57 47 MEAN 71 66 57 47 41 27 26 24 25 37 57 65 45 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 15 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M AVERAGE OF MAXIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** 84 88 65 51 33 32 37 40 50 76 86 *** 1990 87 88 81 73 68 41 49 45 38 58 58 66 63 1991 81 82 83 68 56 50 44 48 43 64 72 86 65 1992 82 82 86 75 76 53 34 45 33 41 62 73 62 1993 70 69 62 63 65 45 43 36 32 49 85 82 58 1994 83 72 75 65 59 47 50 42 53 73 79 74 64 1995 75 80 73 77 75 64 42 33 46 50 57 69 62 1996 77 85 84 74 63 46 40 35 40 54 70 74 62 1997 73 69 76 67 64 44 43 32 42 52 87 83 61 1998 82 81 77 67 66 42 47 43 45 53 60 59 60 1999 82 70 66 61 48 33 45 38 41 45 73 76 57 2000 78 76 66 57 47 37 35 33 41 62 85 88 59 2001 82 78 61 56 45 40 48 34 44 56 66 75 57 2002 84 75 61 72 57 36 45 39 33 46 84 87 60 2003 85 85 84 70 62 48 43 36 37 49 77 87 64 2004 88 75 61 77 75 46 47 36 38 52 87 85 64 2005 87 88 73 68 70 45 42 49 42 52 78 73 64 MEAN 81 79 74 68 62 44 43 39 40 53 74 78 61 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 16 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M AVERAGE OF MINIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** 66 60 26 24 12 12 13 19 27 51 56 *** 1990 70 70 54 46 50 19 23 18 20 30 32 44 40 1991 65 61 52 30 28 22 19 24 16 30 37 67 38 1992 65 61 66 35 36 22 14 17 15 21 35 53 37 1993 57 47 35 32 36 25 24 18 18 30 58 50 36 1994 65 49 45 32 28 16 18 14 21 36 50 51 35 1995 51 47 39 42 36 27 15 14 21 21 27 45 32 1996 60 60 50 37 27 14 14 11 13 23 37 45 33 1997 42 42 48 31 24 14 12 9 14 25 54 55 31 1998 65 65 47 29 30 15 14 16 17 23 31 30 32 1999 60 37 31 25 15 10 16 13 13 22 43 51 28 2000 57 53 30 24 15 9 11 11 12 28 51 64 30 2001 58 51 28 21 15 12 15 10 17 22 35 48 28 2002 67 51 28 38 19 13 13 9 11 20 45 59 31 2003 57 50 37 30 25 15 10 10 10 23 46 62 31 2004 55 42 26 34 32 13 13 10 11 19 48 51 30 2005 64 63 35 27 26 14 15 18 11 17 39 41 31 MEAN 60 54 42 32 27 16 15 14 15 25 42 51 33 RH=0 =====> RELATIVE HUMIDITY < 0.5% =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 17 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M AVERAGE OF RELATIVE HUMIDITY AT 03 UTC. IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** 82 83 64 50 33 31 37 40 49 74 81 *** 1990 81 82 78 69 66 41 49 45 37 55 56 62 60 1991 74 76 79 61 54 50 44 46 42 62 70 78 61 1992 76 74 82 70 72 52 33 45 33 40 59 69 59 1993 65 66 56 61 63 45 43 35 32 46 80 80 56 1994 78 68 71 60 57 46 50 41 53 70 74 70 62 1995 72 77 68 74 72 64 42 33 45 50 53 67 60 1996 75 77 81 70 62 45 40 33 39 52 68 71 59 1997 68 67 72 64 62 43 43 32 42 51 84 79 59 1998 76 76 73 66 65 40 45 43 45 51 57 57 58 1999 78 63 62 58 45 33 45 38 41 45 69 73 54 2000 71 71 62 55 47 37 35 33 38 59 82 84 56 2001 77 75 60 54 43 39 48 34 44 55 61 72 55 2002 80 71 58 66 53 35 43 38 32 44 77 79 56 2003 76 74 73 63 58 47 42 35 37 47 72 82 59 2004 80 66 55 69 69 44 46 36 38 48 79 79 59 2005 80 80 64 61 64 43 41 47 40 47 75 68 59 MEAN 75 73 69 64 59 43 42 38 40 51 70 74 58 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 18 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M AVERAGE OF RELATIVE HUMIDITY AT 09 UTC. IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** 70 72 33 30 17 16 18 23 31 57 64 *** 1990 78 79 61 52 55 23 30 26 25 35 40 50 46 1991 73 69 62 39 32 27 27 31 23 37 47 75 45 1992 70 69 72 46 44 29 19 25 20 26 41 59 43 1993 61 54 46 38 43 29 30 22 22 33 69 64 43 1994 73 55 55 39 32 26 24 21 25 46 58 58 43 1995 59 58 49 51 45 35 23 19 27 26 35 53 40 1996 67 69 56 46 36 21 18 15 16 31 47 53 40 1997 52 49 58 39 30 18 19 13 20 30 63 63 38 1998 72 70 53 36 35 18 19 21 22 30 41 38 38 1999 70 48 41 31 19 14 22 16 20 27 52 59 35 2000 64 61 40 28 20 15 14 15 18 36 62 71 37 2001 66 60 33 26 21 16 23 14 21 29 44 55 34 2002 73 59 34 47 26 17 18 18 15 23 54 67 38 2003 66 61 47 39 29 22 18 16 15 27 52 68 38 2004 66 49 33 41 40 20 19 15 17 26 62 60 37 2005 73 74 43 34 33 19 20 23 19 24 46 50 38 MEAN 68 62 50 39 34 22 21 19 20 30 51 59 40 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 19 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M AVERAGE OF RELATIVE HUMIDITY AT 15 UTC. IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** 74 73 36 29 14 15 14 22 33 62 68 *** 1990 80 82 65 57 58 22 24 19 21 40 36 52 46 1991 72 71 60 37 31 25 20 25 19 38 47 79 44 1992 74 74 74 46 47 25 16 19 16 23 44 60 43 1993 63 55 40 42 44 26 25 19 20 37 71 62 42 1994 75 59 57 37 34 18 19 15 27 48 63 61 43 1995 59 57 49 53 46 33 16 15 24 26 40 55 39 1996 67 75 63 49 33 19 17 16 15 27 45 56 40 1997 54 51 60 38 36 17 12 10 16 34 67 69 39 1998 73 73 57 37 37 18 17 18 20 31 40 40 38 1999 74 48 38 32 20 11 17 17 14 30 54 65 35 2000 68 66 39 29 20 11 12 13 15 41 68 75 38 2001 70 64 36 30 20 14 19 12 20 29 49 59 35 2002 76 59 37 49 25 15 14 11 14 27 60 72 38 2003 70 66 51 43 31 17 10 11 13 29 58 76 40 2004 69 55 35 44 42 16 16 11 14 26 63 68 38 2005 78 75 49 38 35 16 17 20 14 24 53 53 39 MEAN 70 65 52 41 35 19 17 16 18 32 54 63 40 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 20 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M NO. OF DAYS WITH MAXIMUM TEMPERATURE EQUAL 30 AND ABOVE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** 0 0 0 0 13 31 31 10 0 0 0 *** 1990 0 0 0 0 1 16 26 30 17 0 0 0 90 1991 0 0 0 0 0 12 30 29 12 0 0 0 83 1992 0 0 0 0 0 2 27 17 0 0 0 0 46 1993 0 0 0 0 0 6 26 26 10 0 0 0 68 1994 0 0 0 0 0 5 29 30 2 0 0 0 66 1995 0 0 0 0 0 1 26 31 7 0 0 0 65 1996 0 0 0 0 0 6 27 28 5 0 0 0 66 1997 0 0 0 0 0 6 26 30 0 0 0 0 62 1998 0 0 0 0 0 15 25 23 5 0 0 0 68 1999 0 0 0 0 2 14 20 28 7 0 0 0 71 2000 0 0 0 0 0 15 31 29 6 0 0 0 81 2001 0 0 0 0 0 14 26 27 4 0 0 0 71 2002 0 0 0 0 0 7 27 30 10 0 0 0 74 2003 0 0 0 0 0 10 29 29 8 0 0 0 76 2004 0 0 0 0 0 9 24 30 9 0 0 0 72 2005 0 0 0 0 0 9 31 25 7 0 0 0 72 MEAN 0.0 0.0 0.0 0.0 0.2 9.4 27.1 27.8 7.0 0.0 0.0 0.0 71.5 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 21 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M NO. OF DAYS WITH MAXIMUM TEMPERATURE EQUAL 00 AND BELOW YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** 15 2 0 0 0 0 0 0 0 0 0 *** 1990 17 11 2 0 0 0 0 0 0 0 0 6 36 1991 16 14 2 0 0 0 0 0 0 0 0 14 46 1992 29 19 15 0 0 0 0 0 0 0 0 9 72 1993 15 4 0 0 0 0 0 0 0 0 0 0 19 1994 8 2 0 0 0 0 0 0 0 0 0 8 18 1995 0 0 0 0 0 0 0 0 0 0 0 6 6 1996 18 0 0 0 0 0 0 0 0 0 0 0 18 1997 3 5 2 1 0 0 0 0 0 0 0 2 13 1998 22 14 2 0 0 0 0 0 0 0 0 0 38 1999 5 2 0 0 0 0 0 0 0 0 0 2 9 2000 15 9 0 0 0 0 0 0 0 0 0 4 28 2001 8 1 0 0 0 0 0 0 0 0 1 0 10 2002 18 3 0 0 0 0 0 0 0 0 0 5 26 2003 10 2 1 0 0 0 0 0 0 0 0 5 18 2004 2 2 1 0 0 0 0 0 0 0 0 7 12 2005 14 12 0 0 0 0 0 0 0 0 0 2 28 MEAN 12.5 6.8 1.6 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.1 4.1 25.2 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 22 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M NO. OF DAYS WITH MINIMUM TEMPERATURE EQUAL 21 AND ABOVE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** 0 0 0 0 0 2 2 0 0 0 0 *** 1990 0 0 0 0 0 0 4 1 0 0 0 0 5 1991 0 0 0 0 0 0 6 1 0 0 0 0 7 1992 0 0 0 0 0 0 1 0 0 0 0 0 1 1993 0 0 0 0 0 0 2 2 0 0 0 0 4 1994 0 0 0 0 0 0 2 0 0 0 0 0 2 1995 0 0 0 0 0 0 2 2 0 0 0 0 4 1996 0 0 0 0 0 0 2 2 0 0 0 0 4 1997 0 0 0 0 0 0 0 3 0 0 0 0 3 1998 0 0 0 0 0 0 1 7 0 0 0 0 8 1999 0 0 0 0 0 1 2 5 0 0 0 0 8 2000 0 0 0 0 0 0 1 5 0 0 0 0 6 2001 0 0 0 0 0 0 2 3 0 0 0 0 5 2002 0 0 0 0 0 0 0 0 0 0 0 0 0 2003 0 0 0 0 0 0 2 1 0 0 0 0 3 2004 0 0 0 0 0 0 1 2 1 0 0 0 4 2005 0 0 0 0 0 0 3 3 0 0 0 0 6 MEAN 0.0 0.0 0.0 0.0 0.0 0.1 1.9 2.3 0.1 0.0 0.0 0.0 4.4 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 23 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M NO. OF DAYS WITH MINIMUM TEMPERATURE EQUAL -4 AND BELOW YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** 19 4 0 0 0 0 0 0 0 2 21 *** 1990 25 25 12 3 0 0 0 0 0 0 1 14 80 1991 28 19 11 0 0 0 0 0 0 0 1 19 78 1992 29 23 21 0 0 0 0 0 0 0 3 15 91 1993 21 15 8 0 0 0 0 0 0 0 5 4 53 1994 16 12 5 0 0 0 0 0 0 0 0 18 51 1995 15 9 5 0 0 0 0 0 0 0 7 20 56 1996 20 9 4 0 0 0 0 0 0 0 5 4 42 1997 16 19 12 4 0 0 0 0 0 0 0 9 60 1998 25 21 8 0 0 0 0 0 0 0 0 1 55 1999 13 10 4 0 0 0 0 0 0 0 2 10 39 2000 21 19 10 0 0 0 0 0 0 0 0 11 61 2001 21 11 1 0 0 0 0 0 0 0 3 4 40 2002 20 13 2 0 0 0 0 0 0 0 2 13 50 2003 15 13 5 0 0 0 0 0 0 0 2 13 48 2004 8 9 2 0 0 0 0 0 0 0 5 14 38 2005 22 19 2 1 0 0 0 0 0 0 0 5 49 MEAN 19.7 15.6 6.8 0.5 0.0 0.0 0.0 0.0 0.0 0.0 2.2 11.5 56.3 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 24 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M NO. OF DAYS WITH MINIMUM TEMPERATURE EQUAL 00 AND BELOW YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** 20 19 1 0 0 0 0 0 4 15 31 *** 1990 31 28 23 11 0 0 0 0 0 0 8 21 122 1991 31 28 20 5 1 0 0 0 0 0 14 24 123 1992 31 26 29 8 1 0 0 0 0 0 8 23 126 1993 30 24 20 1 0 0 0 0 0 0 12 24 111 1994 25 24 15 1 0 0 0 0 0 0 8 28 101 1995 27 25 17 2 0 0 0 0 0 1 14 31 117 1996 26 21 23 3 0 0 0 0 0 2 18 15 108 1997 24 27 23 5 0 0 0 0 0 0 11 24 114 1998 31 25 19 2 0 0 0 0 0 0 2 13 92 1999 28 19 18 0 0 0 0 0 0 0 10 23 98 2000 26 28 21 0 0 0 0 0 0 1 13 24 113 2001 31 26 10 0 0 0 0 0 0 0 12 16 95 2002 26 24 11 0 0 0 0 0 0 0 12 26 99 2003 24 20 18 2 1 0 0 0 0 0 10 21 96 2004 21 23 11 7 0 0 0 0 0 0 11 29 102 2005 30 24 14 4 0 0 0 0 0 2 13 15 102 MEAN 27.6 24.2 18.3 3.1 0.2 0.0 0.0 0.0 0.0 0.6 11.2 22.8 108.0 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 25 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M MONTHLY TOTAL OF PRECIPITATION IN MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** 36.0 83.9 14.1 14.0 1.0 0.0 0.0 0.0 13.0 41.1 62.5 ****** 1990 45.8 28.2 101.5 68.8 8.0 0.0 5.0 0.0 0.0 30.0 6.0 16.0 309.3 1991 36.0 74.0 83.0 45.0 7.2 2.0 0.0 0.0 0.0 30.9 4.0 82.5 364.6 1992 31.1 48.2 52.9 35.4 76.2 3.1 0.0 0.0 0.0 0.0 33.2 62.7 342.8 1993 43.1 16.5 56.4 52.4 65.7 5.0 5.4 0.0 0.0 21.4 93.2 34.8 393.9 1994 74.6 60.7 71.0 43.2 22.9 18.0 0.0 0.0 2.0 48.2 224.3 13.5 578.4 1995 11.4 39.1 30.1 93.2 77.9 28.7 0.3 0.0 3.0 0.0 21.9 4.3 309.9 1996 31.9 77.0 63.8 105.4 26.4 2.2 0.6 0.0 0.5 6.1 3.3 37.6 354.8 1997 22.1 23.7 58.6 107.3 21.8 0.9 0.0 0.0 0.0 11.1 78.7 26.8 351.0 1998 41.4 39.8 153.2 53.7 35.3 1.2 14.0 20.6 3.2 5.7 19.2 1.6 388.9 1999 53.0 26.2 41.0 27.2 9.6 0.0 23.3 5.4 0.0 25.5 40.7 22.8 274.7 2000 38.9 15.6 76.5 26.2 6.9 0.0 0.4 0.0 6.0 31.1 54.8 60.9 317.3 2001 19.6 19.0 21.2 25.3 7.9 5.2 25.0 0.0 10.5 7.3 46.6 34.4 222.0 2002 44.6 26.5 39.0 95.2 8.8 0.0 0.0 0.0 0.0 5.2 51.1 73.2 343.6 2003 29.3 36.9 65.9 32.2 10.0 0.1 0.0 0.0 0.0 25.3 49.6 41.2 290.5 2004 36.0 16.5 58.1 36.6 47.4 4.0 5.8 0.0 0.0 12.7 58.3 22.7 298.1 2005 27.3 40.2 78.1 44.0 42.4 0.0 2.0 5.3 0.0 9.1 19.7 54.8 322.9 MEAN 36.6 36.7 66.7 53.2 28.7 4.2 4.8 1.8 1.5 16.6 49.7 38.4 338.9 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 26 LATITUDE 35 10 N LONGITUDE 47 48 E DATA PROCESSING CENTER ELEVATION 1906.0 M GREATEST DAILY OF PRECIPITATION IN MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** 14.0 21.0 7.0 10.0 1.0 0.0 0.0 0.0 5.0 17.0 23.0 ****** DAY ** 19 11 30 7 7 ** ** ** 31 15 1 1990 11.0 7.0 27.0 29.0 7.0 0.0 3.0 0.0 0.0 16.0 6.0 8.0 29.0 DAY 8 19 14 2 12 ** 6 ** ** 29 12 26 1991 19.0 36.0 23.0 25.0 6.0 1.0 0.0 0.0 0.0 12.0 2.0 22.0 36.0 DAY 14 27 7 4 17 22 ** ** ** 16 11 12 1992 7.0 19.0 15.0 9.0 19.0 2.0 0.0 0.0 0.0 0.0 23.0 22.0 23.0 DAY 21 24 31 18 6 8 ** ** ** ** 25 3 1993 22.0 5.0 14.0 22.0 14.0 5.0 3.0 0.0 0.0 18.0 20.0 18.0 22.0 DAY 8 21 8 29 6 1 30 ** ** 29 26 15 1994 41.0 24.0 17.0 15.0 7.0 18.0 0.0 0.0 0.8 15.0 66.0 3.0 66.0 DAY 5 1 1 30 6 5 ** ** 28 19 7 16 1995 7.0 14.0 8.0 20.0 19.0 15.0 0.2 0.0 3.0 0.0 8.0 2.0 20.0 DAY 17 5 17 4 29 3 24 ** 21 ** 11 13 1996 12.0 14.0 11.0 25.0 9.0 0.8 0.4 0.0 0.3 2.8 2.0 13.7 25.0 DAY 6 21 2 3 13 27 4 ** 22 30 20 22 1997 19.0 12.0 10.0 42.0 6.0 0.6 0.0 0.0 0.0 7.0 22.0 11.2 42.0 DAY 16 19 29 5 17 7 ** ** ** 21 12 14 1998 12.2 16.0 55.0 11.3 13.0 1.0 8.0 17.0 3.0 3.0 16.0 1.0 55.0 DAY 5 12 18 4 13 20 29 4 14 11 12 4 1999 20.0 8.0 13.0 14.0 5.0 0.0 12.3 4.0 0.0 22.0 18.0 5.7 22.0 DAY 9 6 21 2 9 ** 15 22 ** 31 1 11 2000 11.0 9.0 36.0 13.2 4.0 0.0 0.4 0.0 4.0 9.0 22.0 16.0 36.0 DAY 6 14 24 9 9 ** 8 ** 29 27 6 1 2001 5.5 8.0 14.0 19.0 6.0 3.0 18.0 0.0 4.5 4.0 12.0 15.0 19.0 DAY 26 18 10 9 2 13 19 ** 22 1 12 2 2002 11.0 21.0 17.0 27.0 4.4 0.0 0.0 0.0 0.0 5.0 13.0 42.0 42.0 DAY 7 14 18 19 9 ** ** ** ** 31 12 9 2003 9.7 11.0 26.0 13.3 4.0 0.1 0.0 0.0 0.0 20.6 18.6 16.0 26.0 DAY 28 25 7 16 28 1 ** ** ** 30 11 6 2004 12.9 5.4 53.0 12.0 17.0 4.0 4.3 0.0 0.0 8.0 17.8 11.0 53.0 DAY 13 5 31 23 3 15 12 ** ** 22 23 25 2005 8.0 13.0 45.0 19.1 8.0 0.0 2.0 4.3 0.0 5.0 9.0 18.3 45.0 DAY 19 7 11 16 24 ** 24 12 ** 29 17 23 1989-2005 41.0 36.0 55.0 42.0 19.0 18.0 18.0 17.0 4.5 22.0 66.0 42.0 66.0 YEAR-DAY 94- 5 91-27 98-18 97- 5 92- 6 94- 5 1-19 98- 4 1-22 99-31 94- 7 2- 9 94 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION GHORVEH (40772) I.R OF IR