STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -4.3 -1.2 3.6 11.9 16.2 23.8 28.9 26.2 21.9 16.3 9.7 2.8 13.0 MINIMUN AIR TEMPERATURE (C) -9.7 -6.8 -1.7 5.8 9.4 15.5 20.1 17.7 12.4 7.0 2.9 -1.6 5.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 11 3 0 0 0 0 14 DAYS WITH MINIMUM TEMP. <=-4 26 21 10 0 0 0 0 0 0 0 2 7 66 DAYS WITH FREEZING MIN.<= 0 31 27 20 1 0 0 0 0 0 0 4 23 106 TEMPERATURE RECORDS LOWEST(C) -22.0 -13.2 -9.5 -0.5 4.0 11.5 17.0 12.0 6.5 2.0 -7.0 -14.0 -22.0 DAY 29 1 1 7 5 9 10 31 30 30 27 31 MAXIMUM AIR TEMPERATURE (C) -0.1 3.4 7.7 16.5 20.6 28.4 33.8 31.3 27.3 22.0 14.7 6.6 17.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 8 31 25 1 0 0 0 65 DAYS WITH MAXIMUM TEMP. <= 0 11 4 2 0 0 0 0 0 0 0 0 1 18 TEMPERATURE RECORDS HIGHEST(C) 6.5 10.5 16.5 23.5 28.0 36.0 36.0 35.5 30.0 26.5 20.4 13.6 36.0 DAY 2 22 30 13 30 30 2 5 16 4 20 12 DIF. BETWEEN (MAX.-MIN.) (C) 9.6 10.2 9.4 10.7 11.2 12.9 13.7 13.6 14.9 15.0 11.8 8.2 11.8 MEAN DAILY TEMP. (MDT) (C) -4.9 -1.7 3.0 11.2 15.0 21.9 26.9 24.5 19.8 14.5 8.8 2.5 11.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.8 44.6 184.4 115.1 2.5 0.0 0.0 0.0 347.5 HEATING DEG. DAYS(BASE 18 0C) 688.5 570.7 449.9 205.3 104.5 1.2 0.0 0.0 3.0 109.0 275.2 480.1 2887.5 DEWPOINT (MEAN C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MIXING RATIO (G/KG) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** VAPOUR PRESSURE (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** SATURATION DEF. (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** RELATIVE HUMIDITY (MEAN %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MAX. %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MIN. %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 44.9 25.6 42.8 53.1 66.1 4.1 5.5 4.0 0.0 0.0 14.6 40.8 301.5 DAYS WITH PRECIPITATION >=10 1 1 2 2 2 0 0 0 0 0 0 3 11 DAYS WITH PRECIPITATION >= 5 6 2 4 3 3 0 1 0 0 0 1 3 23 DAYS WITH PRECIPITATION >= 1 8 4 5 8 10 2 1 1 0 0 4 8 51 DAYS WITH PRECIPITATION 14 9 12 9 11 3 2 1 0 0 6 13 80 GREATEST DAILY PRECIPITATION 10.0 16.0 19.0 23.0 29.0 3.0 5.0 4.0 0.0 0.0 8.0 12.0 29.0 DAY 21 25 31 27 6 4 15 30 ** ** 25 9 DAY WITH THUNDER STORM 0 0 0 3 2 1 2 0 0 0 0 0 8 DAYS WITH SNOW OR SLEET 10 7 5 3 0 0 0 0 0 0 0 3 28 DAYS WITH DUST 0 0 3 3 1 2 1 4 1 0 0 0 15 WIND DIRECTION (PREVAILING) 225 270 270 270 270 45 45 45 270 45 225 225 270 PREVAILING WIND SPEED(KNOTS) 11.1 14.4 14.7 11.8 13.7 7.6 7.7 9.9 15.1 6.6 14.5 9.9 12.9 PREVAILING WIND PERCENT 7.1 12.4 23.2 34.7 18.7 14.0 22.6 31.0 18.7 16.1 14.0 9.7 13.3 CALMS PERCENT OF WIND 80.0 64.8 45.8 38.0 38.1 37.3 43.9 33.5 39.3 42.6 52.7 72.9 49.1 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 238 250 253 256 267 268 58 37 300 327 204 239 276 VECTOR WIND MAGNITUDE(KNOTS) 1.0 2.0 4.0 6.0 3.8 1.5 2.2 5.2 2.1 1.6 1.2 1.4 1.4 WIND STEADINESES (MEAN %) 50.0 50.0 62.5 80.0 52.1 22.1 40.7 70.3 29.2 34.0 25.5 58.3 25.5 WIND SPEED (MEAN KNOTS) 2.0 4.0 6.4 7.5 7.3 6.8 5.4 7.4 7.2 4.7 4.7 2.4 5.5 FASTEST WIND DIRECTION 270 270 180 220 270 220 160 80 270 280 210 240 220 FASTEST WIND SPEED (KNOTS) 23 27 29 31 27 39 39 31 27 19 23 19 39 DAY 17 11 6 22 4 1 8 3 17 24 23 27 DAYS WITH SKY CLEAR (0-2)/8 13 14 9 7 7 22 21 22 28 29 12 8 192 DAYS WITH P.CLOUDY (3-6)/8 10 13 19 18 17 6 9 9 2 2 13 17 135 DAYS WITH CLOUDY (7-8)/8 8 2 3 5 7 2 1 0 0 0 5 6 39 DAYS WITH VISIBILITY =< 2 KM 5 4 4 3 2 0 0 1 0 0 13 19 51 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** 310.0 323.0 320.3 296.4 182.6 160.7 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 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 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 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 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 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 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 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 0900 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 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 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 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 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 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -2.8 2.9 6.4 13.3 18.2 25.4 28.2 27.3 24.6 15.3 8.6 6.4 14.5 MINIMUN AIR TEMPERATURE (C) -8.3 -1.9 0.9 6.8 10.9 15.8 19.3 18.5 14.6 6.9 2.5 0.1 7.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 0 0 0 0 0 2 DAYS WITH MINIMUM TEMP. <=-4 23 7 1 0 0 0 0 0 0 0 2 1 34 DAYS WITH FREEZING MIN.<= 0 30 19 12 0 0 0 0 0 0 0 8 17 86 TEMPERATURE RECORDS LOWEST(C) -17.0 -8.0 -6.6 2.0 4.8 11.6 14.8 15.2 9.6 4.2 -5.0 -4.0 -17.0 DAY 21 17 23 27 1 6 18 28 30 8 30 5 MAXIMUM AIR TEMPERATURE (C) 1.6 7.0 10.7 17.5 22.5 30.3 33.0 32.2 30.1 20.8 13.6 11.3 19.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 18 31 30 14 0 0 0 93 DAYS WITH MAXIMUM TEMP. <= 0 13 0 0 0 0 0 0 0 0 0 0 0 13 TEMPERATURE RECORDS HIGHEST(C) 8.6 15.0 18.0 25.0 28.6 35.0 35.2 35.4 33.8 27.2 18.8 16.2 35.4 DAY 8 28 31 19 27 30 3 15 5 1 9 18 DIF. BETWEEN (MAX.-MIN.) (C) 9.9 8.9 9.8 10.7 11.6 14.5 13.7 13.7 15.5 13.9 11.1 11.2 12.0 MEAN DAILY TEMP. (MDT) (C) -3.3 2.5 5.8 12.2 16.7 23.0 26.1 25.4 22.3 13.8 8.0 5.7 13.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 1.6 68.3 158.8 135.1 49.0 0.0 0.0 0.0 412.8 HEATING DEG. DAYS(BASE 18 0C) 661.7 433.1 378.9 174.7 65.4 0.0 0.0 0.0 0.0 130.2 299.6 380.8 2524.4 DEWPOINT (MEAN C) ***** ***** -4.0 -0.1 2.4 -1.4 1.2 0.9 -3.4 -3.5 -2.5 -2.8 ***** MIXING RATIO (G/KG) ****** ****** 3.67 4.87 5.75 4.57 5.35 5.19 3.80 3.77 4.19 3.91 ****** VAPOUR PRESSURE (HPA) ****** ****** 4.76 6.31 7.46 5.92 6.92 6.72 4.94 4.93 5.45 5.10 ****** SATURATION DEF. (HPA) ****** ****** 5.31 9.58 14.29 27.69 32.27 30.57 27.29 13.22 6.24 4.87 ****** RELATIVE HUMIDITY (MEAN %) *** *** 53 45 39 20 19 20 17 31 51 56 *** RELATIVE HUMIDITY (MAX. %) *** *** 74 67 59 33 31 33 30 47 72 77 *** RELATIVE HUMIDITY (MIN. %) *** *** 38 31 27 11 12 12 10 20 35 37 *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** 71 65 59 33 30 32 29 46 70 75 *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** 45 36 32 15 15 15 12 22 44 48 *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** 49 41 35 13 15 17 13 29 46 50 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 62.8 82.8 101.6 96.4 26.7 0.0 0.0 2.0 0.0 1.0 55.6 8.5 437.4 DAYS WITH PRECIPITATION >=10 2 3 5 3 1 0 0 0 0 0 1 0 15 DAYS WITH PRECIPITATION >= 5 4 6 7 4 1 0 0 0 0 0 4 0 26 DAYS WITH PRECIPITATION >= 1 7 10 9 5 3 0 0 1 0 0 6 3 44 DAYS WITH PRECIPITATION 9 11 12 9 5 0 1 1 0 4 8 4 64 GREATEST DAILY PRECIPITATION 25.0 27.0 19.0 35.0 19.0 0.0 0.0 2.0 0.0 0.6 30.0 4.0 35.0 DAY 7 3 9 27 6 ** ** 25 ** 26 26 2 DAY WITH THUNDER STORM 0 1 1 1 1 0 0 0 0 0 2 0 6 DAYS WITH SNOW OR SLEET 8 5 5 0 0 0 0 0 0 0 0 0 18 DAYS WITH DUST 0 0 0 1 0 0 0 0 0 1 0 0 2 WIND DIRECTION (PREVAILING) 270 270 270 225 270 45 45 45 45 45 225 270 45 PREVAILING WIND SPEED(KNOTS) 16.0 10.9 13.4 10.7 11.3 7.5 9.2 8.4 7.1 7.7 13.5 10.9 7.9 PREVAILING WIND PERCENT 8.4 18.6 18.7 27.3 30.3 20.7 40.6 35.5 24.7 16.8 17.3 9.0 14.0 CALMS PERCENT OF WIND 85.8 64.3 52.3 36.0 36.8 39.3 31.6 34.8 42.7 43.2 54.7 74.8 49.6 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 262 263 244 248 262 311 46 37 20 25 248 285 282 VECTOR WIND MAGNITUDE(KNOTS) 1.7 2.5 4.0 5.5 3.8 1.1 3.7 3.5 1.7 1.3 2.9 1.0 1.3 WIND STEADINESES (MEAN %) 85.0 73.5 74.1 80.9 61.3 20.8 57.8 63.6 37.0 28.9 56.9 47.6 27.1 WIND SPEED (MEAN KNOTS) 2.0 3.4 5.4 6.8 6.2 5.3 6.4 5.5 4.6 4.5 5.1 2.1 4.8 FASTEST WIND DIRECTION 280 240 260 220 280 270 280 270 270 270 210 300 220 FASTEST WIND SPEED (KNOTS) 23 23 23 31 23 23 19 17 23 16 29 29 31 DAY 25 19 2 21 7 3 3 11 26 4 11 1 DAYS WITH SKY CLEAR (0-2)/8 17 12 10 8 5 30 25 24 26 21 14 13 205 DAYS WITH P.CLOUDY (3-6)/8 6 10 12 12 21 0 6 7 4 8 12 14 112 DAYS WITH CLOUDY (7-8)/8 8 6 9 10 5 0 0 0 0 2 4 4 48 DAYS WITH VISIBILITY =< 2 KM 13 11 3 1 0 0 0 0 0 0 2 0 30 DURATION OF SUNSHINE HOURS 183.0 183.5 194.5 ****** ****** ****** ****** ****** ****** ****** 200.0 ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 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 ****** ****** 812.3 813.3 814.0 812.0 811.2 812.9 814.3 818.7 815.5 816.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** 821.0 820.2 817.4 818.4 816.2 817.8 819.5 824.3 821.6 824.6 ****** DAY-HOUR **-** **-** 31- 6 16- 6 9- 6 23- 3 27- 3 31- 6 23- 6 17- 6 21- 6 26- 6 MIN. QFE PRESSURE IN HPA ****** ****** 804.7 807.4 809.6 807.4 805.6 807.6 809.5 813.1 806.4 808.7 ****** DAY-HOUR **-** **-** 5-15 29-12 7-12 15-12 13-12 12-12 3-12 3-12 14- 3 4-12 MEAN QNH PRESSURE IN HPA ****** ****** 1018.3 1019.5 1020.3 1018.0 1017.0 1019.0 1020.7 1026.0 1022.2 1023.8 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1028.8 1027.8 1024.4 1025.6 1023.0 1024.9 1026.9 1032.7 1029.5 1033.1 ****** DAY-HOUR **-** **-** 31- 6 16- 6 9- 6 23- 3 27- 3 31- 6 23- 6 17- 6 21- 6 26- 6 MIN. QNH PRESSURE IN HPA ****** ****** 1009.2 1012.4 1015.1 1012.4 1010.3 1012.7 1014.9 1019.3 1011.2 1014.0 ****** DAY-HOUR **-** **-** 5-15 29-12 7-12 15-12 13-12 12-12 3-12 3-12 14- 3 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 ****** ****** 812.7 813.7 814.4 813.0 812.3 813.9 815.3 819.5 815.7 817.2 ****** MAX. QFE PRESSURE IN HPA ****** ****** 820.4 819.5 817.3 818.4 816.2 817.2 818.7 823.6 820.3 822.9 ****** DAY ** ** 31 18 19 23 27 31 23 17 21 26 MIN. QFE PRESSURE IN HPA ****** ****** 806.2 809.3 810.4 809.4 808.3 810.4 812.6 815.9 806.4 810.8 ****** DAY ** ** 12 13 7 4 12 12 29 28 14 5 MEAN QNH PRESSURE IN HPA ****** ****** 1018.8 1019.9 1020.9 1019.1 1018.3 1020.3 1021.9 1026.9 1022.4 1024.2 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1028.0 1026.9 1024.3 1025.6 1023.0 1024.2 1026.0 1031.9 1027.9 1031.0 ****** DAY ** ** 31 18 19 23 27 31 23 17 21 26 MIN. QNH PRESSURE IN HPA ****** ****** 1011.0 1014.7 1016.0 1014.8 1013.5 1016.0 1018.7 1022.6 1011.2 1016.5 ****** DAY ** ** 12 13 7 4 12 12 29 28 14 5 MEAN QFF PRESSURE IN HPA ****** ****** 1017.3 1013.1 1010.2 1003.6 1000.5 1003.5 1007.7 1019.8 1019.3 1023.3 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1028.5 1020.3 1016.2 1011.5 1005.6 1008.9 1012.9 1025.2 1029.6 1030.1 ****** DAY ** ** 23 1 9 23 28 25 23 18 30 26 MIN. QFF PRESSURE IN HPA ****** ****** 1010.7 1005.9 1003.7 999.6 994.6 998.4 1001.9 1012.2 1006.9 1016.3 ****** DAY ** ** 12 21 31 15 12 13 3 4 11 5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 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 ****** ****** 813.3 814.3 814.7 813.2 812.4 814.3 815.8 820.2 816.8 818.1 ****** MAX. QFE PRESSURE IN HPA ****** ****** 821.0 820.2 817.4 818.1 816.2 817.8 819.5 824.3 821.6 824.6 ****** DAY ** ** 31 16 9 22 27 31 23 17 21 26 MIN. QFE PRESSURE IN HPA ****** ****** 806.6 810.0 810.8 810.0 808.5 810.6 813.0 816.3 810.3 812.1 ****** DAY ** ** 22 13 7 4 13 12 3 28 11 5 MEAN QNH PRESSURE IN HPA ****** ****** 1019.5 1020.7 1021.2 1019.3 1018.4 1020.7 1022.6 1027.8 1023.7 1025.3 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1028.8 1027.8 1024.4 1025.3 1023.0 1024.9 1026.9 1032.7 1029.5 1033.1 ****** DAY ** ** 31 16 9 22 27 31 23 17 21 26 MIN. QNH PRESSURE IN HPA ****** ****** 1011.5 1015.5 1016.5 1015.5 1013.7 1016.3 1019.1 1023.1 1015.9 1018.1 ****** DAY ** ** 22 13 7 4 13 12 3 28 11 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 ****** ****** 812.3 813.4 814.0 812.1 811.3 813.0 814.3 818.4 815.3 816.5 ****** MAX. QFE PRESSURE IN HPA ****** ****** 819.6 819.4 816.5 817.4 815.3 816.3 817.9 822.8 819.6 822.5 ****** DAY ** ** 31 16 15 22 27 30 16 17 21 26 MIN. QFE PRESSURE IN HPA ****** ****** 805.2 808.6 809.8 808.9 806.9 809.1 811.4 813.9 809.1 809.7 ****** DAY ** ** 12 12 31 15 11 12 3 28 13 4 MEAN QNH PRESSURE IN HPA ****** ****** 1018.4 1019.6 1020.4 1018.1 1017.0 1019.1 1020.7 1025.7 1021.9 1023.4 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1027.1 1026.8 1023.4 1024.4 1021.9 1023.1 1025.0 1030.9 1027.1 1030.6 ****** DAY ** ** 31 16 15 22 27 30 16 17 21 26 MIN. QNH PRESSURE IN HPA ****** ****** 1009.8 1013.9 1015.3 1014.2 1011.8 1014.5 1017.2 1020.2 1014.5 1015.2 ****** DAY ** ** 12 12 31 15 11 12 3 28 13 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 ****** ****** 811.2 812.3 813.3 810.9 810.0 811.6 812.9 817.4 814.6 815.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** 817.9 818.9 815.8 816.0 814.4 815.4 816.5 821.3 818.8 821.8 ****** DAY ** ** 30 16 15 22 26 28 23 17 21 26 MIN. QFE PRESSURE IN HPA ****** ****** 806.0 807.4 809.6 807.4 805.6 807.6 809.5 813.1 808.5 808.7 ****** DAY ** ** 5 29 7 15 13 12 3 3 13 4 MEAN QNH PRESSURE IN HPA ****** ****** 1017.0 1018.3 1019.5 1016.6 1015.6 1017.5 1019.0 1024.5 1021.0 1022.6 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1025.0 1026.2 1022.5 1022.7 1020.8 1022.0 1023.4 1029.1 1026.1 1029.7 ****** DAY ** ** 30 16 15 22 26 28 23 17 21 26 MIN. QNH PRESSURE IN HPA ****** ****** 1010.7 1012.4 1015.1 1012.4 1010.3 1012.7 1014.9 1019.3 1013.7 1014.0 ****** DAY ** ** 5 29 7 15 13 12 3 3 13 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 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 ****** ****** 812.0 812.9 813.5 811.0 810.2 811.8 813.1 818.1 815.3 816.8 ****** MAX. QFE PRESSURE IN HPA ****** ****** 818.2 818.9 816.2 816.4 814.4 815.8 816.7 821.7 819.6 822.6 ****** DAY ** ** 30 16 15 22 26 28 23 17 21 26 MIN. QFE PRESSURE IN HPA ****** ****** 804.7 808.1 810.1 807.8 805.8 807.6 809.9 813.3 808.5 809.8 ****** DAY ** ** 5 12 6 15 11 12 3 3 13 4 MEAN QNH PRESSURE IN HPA ****** ****** 1017.9 1019.1 1019.8 1016.8 1015.8 1017.7 1019.3 1025.3 1021.9 1023.7 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1025.4 1026.2 1023.0 1023.2 1020.8 1022.5 1023.6 1029.6 1027.1 1030.7 ****** DAY ** ** 30 16 15 22 26 28 23 17 21 26 MIN. QNH PRESSURE IN HPA ****** ****** 1009.2 1013.3 1015.7 1012.9 1010.5 1012.7 1015.4 1019.5 1013.7 1015.3 ****** DAY ** ** 5 12 6 15 11 12 3 3 13 4 MEAN QFF PRESSURE IN HPA ****** ****** 1016.4 1012.3 1009.1 1001.3 998.1 1001.0 1005.1 1018.1 1018.9 1022.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1025.6 1016.9 1014.9 1009.6 1003.5 1007.8 1011.0 1022.4 1027.4 1030.1 ****** DAY ** ** 23 4 14 22 26 28 30 21 30 26 MIN. QFF PRESSURE IN HPA ****** ****** 1007.3 1005.7 1004.5 995.7 991.9 995.3 998.8 1009.2 1007.3 1013.7 ****** DAY ** ** 5 20 31 15 11 12 3 3 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 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.9 4.2 8.7 15.2 19.3 26.1 30.2 29.8 21.3 14.9 9.9 2.2 15.5 MINIMUN AIR TEMPERATURE (C) -0.8 -1.7 2.0 7.9 11.0 15.7 20.1 19.5 11.7 8.3 4.2 -3.3 7.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 7 7 0 0 0 0 14 DAYS WITH MINIMUM TEMP. <=-4 4 4 0 0 0 0 0 0 0 0 0 13 21 DAYS WITH FREEZING MIN.<= 0 23 20 11 0 0 0 0 0 0 0 2 25 81 TEMPERATURE RECORDS LOWEST(C) -5.8 -7.0 -1.6 1.4 5.0 11.0 15.0 15.6 7.2 3.4 -1.0 -11.6 -11.6 DAY 28 4 17 6 7 5 1 25 22 12 27 7 MAXIMUM AIR TEMPERATURE (C) 8.2 8.8 13.3 19.9 23.8 31.1 35.6 35.6 26.6 19.7 14.1 6.6 20.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 24 31 31 4 0 0 0 90 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 3 3 TEMPERATURE RECORDS HIGHEST(C) 15.6 14.6 19.6 25.8 29.0 34.6 38.4 38.6 32.8 24.0 19.0 11.6 38.6 DAY 1 21 31 25 31 21 20 7 1 2 3 18 DIF. BETWEEN (MAX.-MIN.) (C) 9.0 10.5 11.3 12.0 12.8 15.4 15.5 16.1 14.9 11.4 9.9 9.9 12.4 MEAN DAILY TEMP. (MDT) (C) 3.7 3.6 7.6 13.9 17.4 23.4 27.9 27.5 19.2 14.0 9.2 1.7 14.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.8 77.8 212.6 202.7 11.9 0.0 0.0 0.0 505.8 HEATING DEG. DAYS(BASE 18 0C) 443.4 403.7 321.6 124.4 41.1 0.0 0.0 0.0 14.8 122.6 265.4 506.7 2243.7 DEWPOINT (MEAN C) -4.0 -7.7 -4.9 -0.3 -0.7 -3.1 2.8 0.6 -0.5 3.3 0.1 -6.5 -1.7 MIXING RATIO (G/KG) 3.61 2.73 3.47 4.85 4.75 4.00 5.93 5.17 4.69 6.16 4.99 3.06 4.45 VAPOUR PRESSURE (HPA) 4.70 3.54 4.51 6.30 6.16 5.18 7.63 6.68 6.11 8.02 6.49 3.99 5.78 SATURATION DEF. (HPA) 3.70 5.03 7.23 11.71 16.94 29.73 36.58 36.77 20.23 9.41 6.04 3.55 15.58 RELATIVE HUMIDITY (MEAN %) 60 45 44 39 30 17 19 17 25 50 55 56 38 RELATIVE HUMIDITY (MAX. %) 77 67 68 64 52 32 31 29 39 72 75 74 57 RELATIVE HUMIDITY (MIN. %) 43 29 26 24 18 8 12 10 17 33 37 38 25 RELATIVE HUMIDITY (MEAN% 03UTC) 75 66 66 60 51 30 31 28 39 72 73 73 55 RELATIVE HUMIDITY (MEAN% 09UTC) 52 38 35 31 24 13 14 13 20 40 47 46 31 RELATIVE HUMIDITY (MEAN% 15UTC) 55 38 37 35 23 11 15 14 22 47 53 55 34 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 34.3 27.0 60.8 21.3 10.8 0.0 0.0 0.0 0.0 21.3 121.5 31.1 328.1 DAYS WITH PRECIPITATION >=10 2 1 3 1 0 0 0 0 0 0 4 1 12 DAYS WITH PRECIPITATION >= 5 4 1 4 1 0 0 0 0 0 2 7 2 21 DAYS WITH PRECIPITATION >= 1 4 2 6 5 4 0 0 0 0 7 10 5 43 DAYS WITH PRECIPITATION 8 4 6 9 6 0 0 1 2 13 10 10 69 GREATEST DAILY PRECIPITATION 12.0 26.0 27.8 11.0 4.0 0.0 0.0 0.0 0.0 8.0 32.0 18.0 32.0 DAY 24 1 12 30 16 ** ** ** ** 17 7 1 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 3 2 0 0 0 0 0 0 0 0 0 3 8 DAYS WITH DUST 0 0 1 0 0 0 0 1 0 0 0 0 2 WIND DIRECTION (PREVAILING) 270 270 225 270 270 225 45 45 45 45 225 270 270 PREVAILING WIND SPEED(KNOTS) 10.4 11.7 9.9 11.2 10.7 12.1 8.0 8.9 9.0 7.6 9.9 12.8 11.2 PREVAILING WIND PERCENT 16.8 22.9 19.4 19.3 17.4 15.3 30.3 23.9 28.7 14.8 14.0 15.5 14.0 CALMS PERCENT OF WIND 61.3 42.9 47.7 40.0 38.7 38.0 34.2 42.6 40.7 50.3 54.7 61.9 46.1 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 259 259 245 292 270 259 37 46 34 298 242 252 284 VECTOR WIND MAGNITUDE(KNOTS) 2.5 3.8 3.3 2.6 1.9 1.9 3.2 2.6 3.8 1.7 2.7 3.0 1.4 WIND STEADINESES (MEAN %) 69.4 67.9 70.2 46.4 33.9 32.8 58.2 50.0 67.9 37.0 61.4 69.8 28.0 WIND SPEED (MEAN KNOTS) 3.6 5.6 4.7 5.6 5.6 5.8 5.5 5.2 5.6 4.6 4.4 4.3 5.0 FASTEST WIND DIRECTION 280 270 220 300 240 240 60 110 40 270 250 260 280 FASTEST WIND SPEED (KNOTS) 23 19 23 19 19 19 16 23 16 23 23 21 23 DAY 16 1 7 30 4 4 11 15 5 1 8 5 DAYS WITH SKY CLEAR (0-2)/8 11 15 13 12 19 26 29 28 22 13 15 17 220 DAYS WITH P.CLOUDY (3-6)/8 14 11 11 14 12 4 2 3 8 17 6 10 112 DAYS WITH CLOUDY (7-8)/8 6 2 7 4 0 0 0 0 0 1 9 4 33 DAYS WITH VISIBILITY =< 2 KM 1 0 1 0 0 0 0 0 0 0 1 1 4 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 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 814.2 811.3 812.7 814.5 813.9 809.8 808.0 810.0 816.5 818.3 815.4 814.9 813.3 MAX. QFE PRESSURE IN HPA 822.0 818.5 819.0 821.3 818.4 815.0 812.8 814.9 824.1 823.2 822.9 819.9 824.1 DAY-HOUR 10- 6 20- 6 18- 6 5- 6 15- 6 8- 6 3- 3 15- 6 23- 6 11- 6 2- 6 7- 6 MIN. QFE PRESSURE IN HPA 802.7 803.3 804.2 807.0 807.8 804.0 804.2 805.0 808.6 813.2 805.8 801.9 801.9 DAY-HOUR 16- 9 1- 3 7-12 2-12 1-12 28-12 21-12 1-12 1-12 2-12 25-15 4-12 MEAN QNH PRESSURE IN HPA 1020.6 1017.1 1018.8 1021.0 1020.2 1015.3 1013.1 1015.6 1023.3 1025.5 1022.0 1021.5 1019.5 MAX. QNH PRESSURE IN HPA 1030.0 1025.7 1026.4 1029.1 1025.6 1021.5 1018.9 1021.4 1032.5 1031.4 1031.0 1027.4 1032.5 DAY-HOUR 10- 6 20- 6 18- 6 5- 6 15- 6 8- 6 3- 3 15- 6 23- 6 11- 6 2- 6 7- 6 MIN. QNH PRESSURE IN HPA 1006.8 1007.5 1008.6 1011.9 1012.9 1008.3 1008.6 1009.5 1013.9 1019.4 1010.5 1005.8 1005.8 DAY-HOUR 16- 9 1- 3 7-12 2-12 1-12 28-12 21-12 1-12 1-12 2-12 25-15 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 814.4 811.5 813.0 815.2 814.6 811.1 809.2 811.2 817.3 818.8 815.7 815.1 813.9 MAX. QFE PRESSURE IN HPA 821.3 817.5 817.9 820.0 818.1 814.7 812.8 814.1 823.1 822.4 821.9 819.6 823.1 DAY 10 20 18 29 15 8 3 15 23 10 2 22 MIN. QFE PRESSURE IN HPA 805.5 803.3 804.8 808.3 808.3 807.0 806.9 807.5 811.7 815.6 808.8 802.3 802.3 DAY 16 1 12 2 6 29 31 1 1 16 26 4 MEAN QNH PRESSURE IN HPA 1020.8 1017.4 1019.2 1021.8 1021.0 1016.9 1014.6 1017.0 1024.3 1026.1 1022.4 1021.7 1020.3 MAX. QNH PRESSURE IN HPA 1029.1 1024.6 1025.0 1027.6 1025.3 1021.2 1018.9 1020.5 1031.3 1030.4 1029.8 1027.1 1031.3 DAY 10 20 18 29 15 8 3 15 23 10 2 22 MIN. QNH PRESSURE IN HPA 1010.1 1007.5 1009.3 1013.5 1013.5 1011.9 1011.8 1012.5 1017.6 1022.3 1014.1 1006.3 1006.3 DAY 16 1 12 2 6 29 31 1 1 16 26 4 MEAN QFF PRESSURE IN HPA 1021.1 1017.8 1016.2 1013.6 1009.9 1000.9 995.7 998.8 1012.4 1018.4 1018.2 1024.0 1012.2 MAX. QFF PRESSURE IN HPA 1032.0 1029.8 1024.6 1023.6 1014.5 1006.5 1002.4 1003.9 1022.1 1024.0 1025.0 1036.3 1036.3 DAY 10 20 17 5 7 8 2 23 23 10 20 7 MIN. QFF PRESSURE IN HPA 1007.6 1002.3 1003.4 1005.5 1004.0 996.3 991.4 992.8 1000.9 1012.4 1011.0 1005.2 991.4 DAY 16 1 7 26 6 29 31 1 2 2 26 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 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 815.4 812.3 814.0 815.8 814.9 811.1 809.5 811.6 818.0 819.6 816.7 816.0 814.6 MAX. QFE PRESSURE IN HPA 822.0 818.5 819.0 821.3 818.4 815.0 812.3 814.9 824.1 823.2 822.9 819.9 824.1 DAY 10 20 18 5 15 8 2 15 23 11 2 7 MIN. QFE PRESSURE IN HPA 805.5 804.0 805.9 808.3 809.5 806.6 807.2 808.0 812.0 816.1 810.9 803.8 803.8 DAY 16 1 12 2 1 29 21 1 1 16 26 4 MEAN QNH PRESSURE IN HPA 1022.1 1018.4 1020.3 1022.5 1021.5 1016.9 1014.9 1017.5 1025.1 1027.1 1023.6 1022.8 1021.0 MAX. QNH PRESSURE IN HPA 1030.0 1025.7 1026.4 1029.1 1025.6 1021.5 1018.3 1021.4 1032.5 1031.4 1031.0 1027.4 1032.5 DAY 10 20 18 5 15 8 2 15 23 11 2 7 MIN. QNH PRESSURE IN HPA 1010.1 1008.3 1010.6 1013.5 1014.9 1011.5 1012.2 1013.1 1017.9 1022.9 1016.6 1008.1 1008.1 DAY 16 1 12 2 1 29 21 1 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 814.1 811.2 812.7 814.5 813.9 809.6 808.1 810.0 816.5 818.1 815.1 814.7 813.2 MAX. QFE PRESSURE IN HPA 820.2 817.2 818.0 820.1 817.2 813.5 811.0 813.7 823.1 821.9 821.8 818.9 823.1 DAY 10 20 18 5 15 8 2 22 23 11 2 7 MIN. QFE PRESSURE IN HPA 802.7 804.4 804.3 808.0 808.1 804.8 805.9 806.8 810.7 814.2 809.0 802.5 802.5 DAY 16 12 12 2 1 28 21 2 1 2 26 4 MEAN QNH PRESSURE IN HPA 1020.4 1017.0 1018.8 1020.9 1020.2 1015.0 1013.2 1015.6 1023.4 1025.3 1021.6 1021.2 1019.4 MAX. QNH PRESSURE IN HPA 1027.8 1024.2 1025.1 1027.7 1024.2 1019.7 1016.7 1020.0 1031.3 1029.8 1029.7 1026.2 1031.3 DAY 10 20 18 5 15 8 2 22 23 11 2 7 MIN. QNH PRESSURE IN HPA 1006.8 1008.8 1008.7 1013.1 1013.3 1009.3 1010.6 1011.7 1016.4 1020.6 1014.3 1006.5 1006.5 DAY 16 12 12 2 1 28 21 2 1 2 26 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 813.2 810.3 811.5 813.4 812.9 808.5 806.5 808.6 815.1 817.2 814.4 813.9 812.1 MAX. QFE PRESSURE IN HPA 819.6 815.8 817.0 818.8 815.8 812.2 809.1 813.4 821.7 821.0 820.9 818.5 821.7 DAY 9 20 18 5 14 8 2 15 23 11 2 7 MIN. QFE PRESSURE IN HPA 803.2 805.1 804.2 807.0 807.8 804.0 804.2 805.0 808.6 813.2 807.9 801.9 801.9 DAY 16 11 7 2 1 28 21 1 1 2 25 4 MEAN QNH PRESSURE IN HPA 1019.3 1015.8 1017.4 1019.6 1019.0 1013.8 1011.3 1013.8 1021.6 1024.2 1020.8 1020.3 1018.1 MAX. QNH PRESSURE IN HPA 1027.1 1022.5 1023.9 1026.1 1022.5 1018.2 1014.5 1019.6 1029.6 1028.8 1028.6 1025.7 1029.6 DAY 9 20 18 5 14 8 2 15 23 11 2 7 MIN. QNH PRESSURE IN HPA 1007.4 1009.7 1008.6 1011.9 1012.9 1008.3 1008.6 1009.5 1013.9 1019.4 1013.0 1005.8 1005.8 DAY 16 11 7 2 1 28 21 1 1 2 25 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 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 813.9 811.2 812.2 813.8 813.3 808.9 806.8 808.7 815.4 817.9 815.0 814.9 812.7 MAX. QFE PRESSURE IN HPA 820.5 816.3 817.2 819.0 816.6 812.4 809.6 813.0 821.4 821.0 821.9 819.5 821.9 DAY 9 20 18 5 14 9 2 15 23 11 1 7 MIN. QFE PRESSURE IN HPA 805.0 805.1 804.6 807.9 808.5 805.0 804.3 805.0 808.9 813.9 805.8 802.9 802.9 DAY 16 11 12 2 1 28 30 1 1 2 25 3 MEAN QNH PRESSURE IN HPA 1020.2 1017.0 1018.2 1020.1 1019.4 1014.2 1011.7 1014.0 1022.1 1025.0 1021.6 1021.4 1018.7 MAX. QNH PRESSURE IN HPA 1028.2 1023.1 1024.2 1026.4 1023.5 1018.4 1015.1 1019.1 1029.2 1028.8 1029.8 1026.9 1029.8 DAY 9 20 18 5 14 9 2 15 23 11 1 7 MIN. QNH PRESSURE IN HPA 1009.5 1009.7 1009.1 1013.0 1013.7 1009.5 1008.7 1009.5 1014.2 1020.2 1010.5 1007.0 1007.0 DAY 16 11 12 2 1 28 30 1 1 2 25 3 MEAN QFF PRESSURE IN HPA 1020.5 1017.4 1015.2 1012.0 1008.3 998.4 992.7 995.8 1010.1 1017.5 1017.4 1023.7 1010.8 MAX. QFF PRESSURE IN HPA 1030.4 1026.7 1021.8 1022.9 1012.3 1003.2 998.6 1001.5 1019.8 1023.3 1025.5 1037.1 1037.1 DAY 8 20 17 5 7 8 2 15 23 8 1 7 MIN. QFF PRESSURE IN HPA 1008.5 1009.2 1003.0 1002.4 1004.5 994.1 987.9 989.9 997.6 1009.9 1005.8 1004.8 987.9 DAY 16 11 7 26 28 28 30 1 2 2 25 3 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.2 5.0 9.0 13.6 18.2 24.1 30.1 29.7 23.8 16.0 10.6 1.8 15.6 MINIMUN AIR TEMPERATURE (C) -2.1 -1.4 1.5 6.2 10.6 15.0 20.1 19.6 14.0 6.9 2.0 -3.3 7.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 12 5 0 0 0 0 17 DAYS WITH MINIMUM TEMP. <=-4 8 1 1 0 0 0 0 0 0 0 4 13 27 DAYS WITH FREEZING MIN.<= 0 27 23 9 0 0 0 0 0 0 0 7 31 97 TEMPERATURE RECORDS LOWEST(C) -6.4 -6.0 -4.0 2.0 5.6 9.4 16.0 16.8 9.0 2.4 -7.6 -7.2 -7.6 DAY 21 26 1 7 9 1 1 11 22 19 29 21 MAXIMUM AIR TEMPERATURE (C) 10.6 9.9 13.9 18.4 23.1 28.8 35.5 34.9 29.5 22.0 16.4 5.9 20.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 14 31 31 15 0 0 0 91 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 3 3 TEMPERATURE RECORDS HIGHEST(C) 13.8 14.4 19.0 22.8 27.2 34.0 38.2 36.4 32.4 28.0 21.6 11.8 38.2 DAY 4 21 24 30 20 21 16 7 5 3 8 29 DIF. BETWEEN (MAX.-MIN.) (C) 12.7 11.3 12.4 12.2 12.5 13.8 15.4 15.3 15.5 15.1 14.4 9.2 13.3 MEAN DAILY TEMP. (MDT) (C) 4.2 4.2 7.7 12.3 16.8 21.9 27.8 27.2 21.7 14.4 9.2 1.3 14.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 51.7 211.7 193.7 45.3 0.0 0.0 0.0 502.4 HEATING DEG. DAYS(BASE 18 0C) 426.3 385.4 318.2 170.8 49.5 5.5 0.0 0.0 2.6 117.1 264.4 516.9 2256.7 DEWPOINT (MEAN C) -6.4 -5.8 -5.0 -1.8 2.5 2.6 1.4 2.3 0.4 -1.8 -6.1 -4.3 -1.8 MIXING RATIO (G/KG) 3.07 3.19 3.48 4.39 5.97 6.04 5.46 5.69 4.94 4.25 3.18 3.47 4.43 VAPOUR PRESSURE (HPA) 4.00 4.14 4.52 5.70 7.75 7.80 7.03 7.35 6.40 5.55 4.15 4.53 5.74 SATURATION DEF. (HPA) 5.20 4.89 7.44 10.41 13.87 23.46 37.13 35.68 24.35 13.78 9.57 2.66 15.70 RELATIVE HUMIDITY (MEAN %) 47 49 42 40 41 30 18 19 23 33 32 68 37 RELATIVE HUMIDITY (MAX. %) 68 71 66 65 62 49 29 29 37 50 47 84 55 RELATIVE HUMIDITY (MIN. %) 29 32 26 24 26 18 10 12 15 22 22 53 24 RELATIVE HUMIDITY (MEAN% 03UTC) 68 69 64 64 61 49 29 29 36 50 47 84 54 RELATIVE HUMIDITY (MEAN% 09UTC) 38 42 32 29 31 23 14 14 18 27 27 60 30 RELATIVE HUMIDITY (MEAN% 15UTC) 40 42 36 33 38 23 13 16 19 28 27 63 32 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 4.0 20.0 32.6 23.5 71.0 14.0 0.0 0.0 0.0 0.0 0.0 11.9 177.0 DAYS WITH PRECIPITATION >=10 0 0 1 1 3 0 0 0 0 0 0 0 5 DAYS WITH PRECIPITATION >= 5 0 2 2 1 5 1 0 0 0 0 0 0 11 DAYS WITH PRECIPITATION >= 1 1 3 4 3 10 3 0 0 0 0 0 5 29 DAYS WITH PRECIPITATION 1 6 8 8 11 5 0 0 0 1 1 7 48 GREATEST DAILY PRECIPITATION 4.0 9.0 18.0 21.0 22.0 6.0 0.0 0.0 0.0 0.0 0.0 4.0 22.0 DAY 1 5 21 22 30 6 ** ** ** ** ** 10 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 0 1 0 0 0 0 0 0 0 0 0 8 9 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 1 0 0 1 WIND DIRECTION (PREVAILING) 270 270 270 270 45 225 45 45 45 45 225 45 270 PREVAILING WIND SPEED(KNOTS) 12.2 10.4 11.7 12.2 8.0 11.1 7.9 8.6 7.5 8.2 12.6 7.0 11.7 PREVAILING WIND PERCENT 17.4 18.6 18.1 28.0 15.5 14.0 21.3 31.6 20.7 18.7 13.3 7.7 12.3 CALMS PERCENT OF WIND 64.5 65.0 56.8 45.3 45.8 40.7 49.0 53.5 47.3 48.4 63.3 85.2 55.4 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 259 267 261 261 270 267 49 46 286 321 236 359 273 VECTOR WIND MAGNITUDE(KNOTS) 3.2 2.0 2.9 4.8 1.7 1.6 1.2 3.0 1.3 1.1 2.9 0.5 1.5 WIND STEADINESES (MEAN %) 82.1 58.8 61.7 78.7 31.5 29.1 25.5 75.0 23.6 22.0 69.0 41.7 33.3 WIND SPEED (MEAN KNOTS) 3.9 3.4 4.7 6.1 5.4 5.5 4.7 4.0 5.5 5.0 4.2 1.2 4.5 FASTEST WIND DIRECTION 240 290 210 220 240 240 300 270 220 260 210 300 260 FASTEST WIND SPEED (KNOTS) 23 19 21 19 23 19 23 16 23 27 23 14 27 DAY 11 9 25 5 13 3 27 23 20 12 24 19 DAYS WITH SKY CLEAR (0-2)/8 23 15 20 6 14 27 31 29 27 29 22 12 255 DAYS WITH P.CLOUDY (3-6)/8 6 12 6 18 9 3 0 2 3 2 8 8 77 DAYS WITH CLOUDY (7-8)/8 2 1 5 6 8 0 0 0 0 0 0 11 33 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 1 0 0 0 0 1 0 5 7 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** 359.7 313.7 311.3 295.0 256.8 143.2 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 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 815.2 812.6 813.0 812.8 815.2 811.7 808.3 811.3 813.7 816.6 815.3 815.7 813.5 MAX. QFE PRESSURE IN HPA 821.6 818.9 820.9 818.1 819.1 816.9 813.0 816.4 820.4 824.1 822.5 819.7 824.1 DAY-HOUR 7- 6 1- 6 3- 6 12- 6 26- 6 2-15 4- 3 25- 6 13- 6 25- 6 16- 6 20- 6 MIN. QFE PRESSURE IN HPA 809.9 805.0 804.9 806.9 810.0 806.8 803.4 807.0 809.0 811.0 808.1 811.1 803.4 DAY-HOUR 11- 9 5- 3 17-12 24-12 10-12 22-12 16-15 8-15 4-12 12-12 25-12 4- 3 MEAN QNH PRESSURE IN HPA 1021.8 1018.7 1019.1 1018.9 1021.7 1017.6 1013.5 1017.1 1020.0 1023.4 1022.0 1022.4 1019.7 MAX. QNH PRESSURE IN HPA 1029.5 1026.2 1028.6 1025.3 1026.5 1023.8 1019.1 1023.2 1028.0 1032.5 1030.6 1027.2 1032.5 DAY-HOUR 7- 6 1- 6 3- 6 12- 6 26- 6 2-15 4- 3 25- 6 13- 6 25- 6 16- 6 20- 6 MIN. QNH PRESSURE IN HPA 1015.4 1009.5 1009.4 1011.8 1015.5 1011.7 1007.6 1011.9 1014.3 1016.7 1013.3 1016.9 1007.6 DAY-HOUR 11- 9 5- 3 17-12 24-12 10-12 22-12 16-15 8-15 4-12 12-12 25-12 4- 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 815.5 813.0 813.4 813.5 815.8 812.7 809.3 812.4 814.7 817.3 816.0 816.1 814.1 MAX. QFE PRESSURE IN HPA 821.0 817.4 819.5 816.9 819.0 816.6 813.0 815.9 819.9 823.4 822.0 818.8 823.4 DAY 7 1 3 13 27 1 4 25 13 27 16 20 MIN. QFE PRESSURE IN HPA 810.7 805.0 806.5 809.4 812.0 808.1 805.9 810.0 810.8 812.1 810.3 811.1 805.0 DAY 12 5 26 24 11 22 17 8 20 13 26 4 MEAN QNH PRESSURE IN HPA 1022.1 1019.2 1019.6 1019.7 1022.4 1018.8 1014.7 1018.4 1021.1 1024.3 1022.8 1022.9 1020.5 MAX. QNH PRESSURE IN HPA 1028.8 1024.4 1026.9 1023.8 1026.4 1023.5 1019.1 1022.6 1027.4 1031.6 1030.0 1026.1 1031.6 DAY 7 1 3 13 27 1 4 25 13 27 16 20 MIN. QNH PRESSURE IN HPA 1016.4 1009.5 1011.3 1014.8 1017.9 1013.3 1010.6 1015.5 1016.5 1018.1 1015.9 1016.9 1009.5 DAY 12 5 26 24 11 22 17 8 20 13 26 4 MEAN QFF PRESSURE IN HPA 1022.4 1018.9 1016.7 1012.8 1011.9 1004.0 995.9 1000.2 1007.3 1016.6 1019.2 1025.3 1012.6 MAX. QFF PRESSURE IN HPA 1028.8 1024.7 1025.9 1019.2 1018.1 1015.1 1002.2 1004.6 1015.8 1027.1 1029.0 1030.4 1030.4 DAY 7 14 3 13 27 1 4 25 22 26 28 20 MIN. QFF PRESSURE IN HPA 1012.5 1005.1 1004.6 1006.4 1006.2 994.8 990.5 995.8 1000.9 1006.0 1009.3 1016.5 990.5 DAY 12 5 26 19 7 22 17 8 20 12 11 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 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 816.5 814.0 814.3 813.9 816.2 812.8 809.6 812.9 815.2 818.2 816.8 817.0 814.8 MAX. QFE PRESSURE IN HPA 821.6 818.9 820.9 818.1 819.1 816.9 813.0 816.4 820.4 824.1 822.5 819.7 824.1 DAY 7 1 3 12 26 8 4 25 13 25 16 20 MIN. QFE PRESSURE IN HPA 811.8 805.5 808.1 809.6 812.9 808.1 806.2 810.0 811.1 813.0 811.2 811.9 805.5 DAY 11 5 17 24 11 22 17 8 20 12 25 4 MEAN QNH PRESSURE IN HPA 1023.4 1020.4 1020.8 1020.3 1023.0 1018.9 1015.1 1019.0 1021.8 1025.4 1023.7 1024.0 1021.3 MAX. QNH PRESSURE IN HPA 1029.5 1026.2 1028.6 1025.3 1026.5 1023.8 1019.1 1023.2 1028.0 1032.5 1030.6 1027.2 1032.5 DAY 7 1 3 12 26 8 4 25 13 25 16 20 MIN. QNH PRESSURE IN HPA 1017.7 1010.1 1013.3 1015.1 1019.0 1013.3 1011.0 1015.5 1016.9 1019.1 1017.0 1017.8 1010.1 DAY 11 5 17 24 11 22 17 8 20 12 25 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 814.9 812.6 813.1 812.8 815.1 811.7 808.4 811.6 813.7 816.3 814.8 815.4 813.4 MAX. QFE PRESSURE IN HPA 820.9 817.8 819.9 817.0 818.4 815.9 811.1 815.0 818.9 822.2 820.4 818.1 822.2 DAY 7 1 3 12 26 1 29 25 13 25 15 10 MIN. QFE PRESSURE IN HPA 809.9 805.9 806.5 808.0 811.6 807.0 805.0 808.9 809.3 811.4 809.2 811.3 805.0 DAY 11 5 17 24 11 22 16 8 20 12 25 4 MEAN QNH PRESSURE IN HPA 1021.4 1018.6 1019.3 1018.9 1021.7 1017.6 1013.6 1017.4 1020.0 1023.1 1021.3 1022.0 1019.6 MAX. QNH PRESSURE IN HPA 1028.6 1024.9 1027.4 1023.9 1025.6 1022.6 1016.9 1021.5 1026.2 1030.2 1028.0 1025.3 1030.2 DAY 7 1 3 12 26 1 29 25 13 25 15 10 MIN. QNH PRESSURE IN HPA 1015.4 1010.6 1011.3 1013.1 1017.5 1011.9 1009.5 1014.2 1014.7 1017.2 1014.6 1017.1 1009.5 DAY 11 5 17 24 11 22 16 8 20 12 25 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 814.2 811.5 811.8 811.7 814.1 810.5 807.1 810.0 812.3 815.2 814.2 814.6 812.3 MAX. QFE PRESSURE IN HPA 819.9 816.9 817.9 816.6 817.2 814.8 810.0 813.1 817.0 821.0 819.8 817.1 821.0 DAY 7 1 3 12 26 1 29 25 13 25 15 10 MIN. QFE PRESSURE IN HPA 809.9 805.3 804.9 806.9 810.0 806.8 803.6 807.4 809.0 811.0 808.1 811.5 803.6 DAY 11 23 17 24 10 22 16 22 4 12 25 25 MEAN QNH PRESSURE IN HPA 1020.6 1017.3 1017.7 1017.6 1020.4 1016.2 1012.1 1015.6 1018.4 1021.8 1020.6 1021.1 1018.3 MAX. QNH PRESSURE IN HPA 1027.4 1023.8 1025.0 1023.5 1024.2 1021.3 1015.5 1019.3 1023.9 1028.8 1027.3 1024.1 1028.8 DAY 7 1 3 12 26 1 29 25 13 25 15 10 MIN. QNH PRESSURE IN HPA 1015.4 1009.9 1009.4 1011.8 1015.5 1011.7 1007.9 1012.4 1014.3 1016.7 1013.3 1017.3 1007.9 DAY 11 23 17 24 10 22 16 22 4 12 25 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 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 815.0 812.1 812.4 812.1 814.6 810.8 807.1 809.8 812.8 815.9 815.0 815.5 812.8 MAX. QFE PRESSURE IN HPA 819.9 817.6 817.7 817.0 819.0 816.9 810.0 812.9 817.0 821.7 820.9 818.4 821.7 DAY 7 1 3 12 26 2 3 25 13 25 15 23 MIN. QFE PRESSURE IN HPA 810.8 806.1 806.0 807.9 810.0 807.4 803.4 807.0 809.0 811.6 808.1 812.6 803.4 DAY 12 23 26 24 10 22 16 8 4 15 25 15 MEAN QNH PRESSURE IN HPA 1021.5 1018.1 1018.4 1018.1 1021.1 1016.5 1012.0 1015.3 1018.9 1022.6 1021.6 1022.1 1018.9 MAX. QNH PRESSURE IN HPA 1027.4 1024.7 1024.8 1023.9 1026.4 1023.8 1015.5 1019.0 1023.9 1029.6 1028.6 1025.6 1029.6 DAY 7 1 3 12 26 2 3 25 13 25 15 23 MIN. QNH PRESSURE IN HPA 1016.5 1010.9 1010.7 1013.0 1015.5 1012.4 1007.6 1011.9 1014.3 1017.5 1013.3 1018.7 1007.6 DAY 12 23 26 24 10 22 16 8 4 15 25 15 MEAN QFF PRESSURE IN HPA 1021.7 1017.8 1015.3 1011.3 1010.8 1001.7 993.3 997.0 1005.1 1014.9 1018.1 1024.5 1011.0 MAX. QFF PRESSURE IN HPA 1028.2 1022.7 1023.4 1017.5 1017.2 1014.4 998.5 1001.1 1011.0 1025.0 1028.0 1029.3 1029.3 DAY 7 1 3 12 26 2 3 25 22 25 27 20 MIN. QFF PRESSURE IN HPA 1012.5 1008.5 1005.4 1007.2 1005.3 995.7 987.0 992.4 998.0 1005.5 1008.8 1020.3 987.0 DAY 12 5 25 18 11 22 16 8 4 12 11 25 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -2.1 5.2 6.1 13.6 20.7 26.1 27.4 27.7 24.6 16.6 8.6 6.1 15.1 MINIMUN AIR TEMPERATURE (C) -7.3 0.4 0.9 6.6 12.1 16.5 18.9 18.2 14.7 7.7 1.9 -0.7 7.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 6 2 0 0 0 0 8 DAYS WITH MINIMUM TEMP. <=-4 19 1 0 0 0 0 0 0 0 0 1 2 23 DAYS WITH FREEZING MIN.<= 0 29 16 13 0 0 0 0 0 0 0 7 21 86 TEMPERATURE RECORDS LOWEST(C) -16.6 -4.2 -2.0 0.4 8.4 12.6 16.0 13.0 12.8 3.4 -5.0 -4.6 -16.6 DAY 15 6 9 6 12 7 28 31 23 18 13 3 MAXIMUM AIR TEMPERATURE (C) 2.6 9.6 10.2 18.5 25.3 30.9 32.0 32.9 30.4 22.2 13.4 11.5 20.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 23 30 29 17 0 0 0 100 DAYS WITH MAXIMUM TEMP. <= 0 12 0 0 0 0 0 0 0 0 0 0 0 12 TEMPERATURE RECORDS HIGHEST(C) 11.0 17.4 19.4 23.8 32.4 33.6 34.6 34.8 34.2 27.2 20.0 16.2 34.8 DAY 1 9 31 21 31 24 3 10 16 1 3 28 DIF. BETWEEN (MAX.-MIN.) (C) 9.9 9.2 9.3 11.9 13.2 14.4 13.1 14.7 15.7 14.5 11.5 12.2 12.5 MEAN DAILY TEMP. (MDT) (C) -2.3 5.0 5.5 12.5 18.7 23.7 25.4 25.6 22.6 15.0 7.7 5.4 13.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 7.7 80.4 137.0 141.2 51.6 0.0 0.0 0.0 417.9 HEATING DEG. DAYS(BASE 18 0C) 630.2 376.8 386.4 163.5 20.5 0.0 0.0 0.0 0.0 96.1 310.3 391.2 2375.0 DEWPOINT (MEAN C) -7.0 -2.0 -2.5 0.0 4.5 5.0 6.2 3.1 2.3 -1.8 -3.4 -4.1 0.0 MIXING RATIO (G/KG) 2.93 4.17 4.08 4.90 6.67 7.01 7.49 6.09 5.70 4.30 3.78 3.56 5.06 VAPOUR PRESSURE (HPA) 3.81 5.41 5.28 6.36 8.63 9.04 9.66 7.88 7.39 5.61 4.94 4.65 6.55 SATURATION DEF. (HPA) 1.89 3.84 4.50 9.83 16.62 25.63 27.73 30.49 25.03 14.29 6.83 5.14 14.32 RELATIVE HUMIDITY (MEAN %) 71 64 59 44 39 28 27 23 25 31 46 52 42 RELATIVE HUMIDITY (MAX. %) 87 83 78 66 61 42 39 34 38 47 61 72 59 RELATIVE HUMIDITY (MIN. %) 57 47 43 28 25 20 21 15 17 20 35 35 30 RELATIVE HUMIDITY (MEAN% 03UTC) 86 82 75 66 60 42 39 33 38 46 59 70 58 RELATIVE HUMIDITY (MEAN% 09UTC) 64 56 51 34 30 23 22 18 20 26 41 42 36 RELATIVE HUMIDITY (MEAN% 15UTC) 70 58 55 38 34 24 26 21 20 26 42 46 38 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 35.0 60.3 108.7 35.2 11.0 0.8 0.2 3.8 2.0 0.3 5.7 19.2 282.2 DAYS WITH PRECIPITATION >=10 1 2 5 1 0 0 0 0 0 0 0 0 9 DAYS WITH PRECIPITATION >= 5 4 4 8 3 1 0 0 0 0 0 0 2 22 DAYS WITH PRECIPITATION >= 1 6 8 12 5 2 0 0 1 1 0 2 4 41 DAYS WITH PRECIPITATION 7 12 14 11 7 3 2 2 1 2 2 5 68 GREATEST DAILY PRECIPITATION 13.0 18.0 24.0 14.0 8.0 0.8 0.2 3.0 2.0 0.2 4.0 9.0 24.0 DAY 6 3 23 25 12 26 10 30 1 15 21 15 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 4 3 2 0 0 0 0 0 0 0 0 0 9 DAYS WITH DUST 0 0 0 0 0 0 0 0 5 0 0 0 5 WIND DIRECTION (PREVAILING) 45 270 270 225 270 45 45 45 45 225 45 270 45 PREVAILING WIND SPEED(KNOTS) 7.8 11.4 9.3 12.3 12.6 8.8 9.6 8.1 7.0 14.1 7.2 9.7 8.3 PREVAILING WIND PERCENT 11.0 13.1 19.4 22.0 14.8 29.3 37.0 34.8 14.0 15.5 8.0 11.0 14.7 CALMS PERCENT OF WIND 80.6 63.4 49.7 49.3 56.8 34.7 37.7 45.8 56.0 51.0 80.0 74.2 56.6 NO. OF WIND OBSERVATION 155 145 155 150 155 150 154 155 150 155 150 155 1829 VECTOR WIND DIRECTION (MEAN) 25 253 255 236 278 349 46 45 300 259 345 266 290 VECTOR WIND MAGNITUDE(KNOTS) 0.5 2.1 2.6 3.8 2.9 1.0 4.3 3.0 1.2 1.9 0.2 2.0 0.9 WIND STEADINESES (MEAN %) 31.3 55.3 57.8 64.4 64.4 15.9 75.4 69.8 29.3 35.8 11.8 83.3 21.4 WIND SPEED (MEAN KNOTS) 1.6 3.8 4.5 5.9 4.5 6.3 5.7 4.3 4.1 5.3 1.7 2.4 4.2 FASTEST WIND DIRECTION 210 240 220 210 280 40 60 30 270 210 220 300 210 FASTEST WIND SPEED (KNOTS) 14 27 19 33 29 23 17 19 19 29 19 21 33 DAY 7 9 26 21 5 27 21 29 5 27 8 24 DAYS WITH SKY CLEAR (0-2)/8 12 10 10 13 15 26 19 26 30 29 16 17 223 DAYS WITH P.CLOUDY (3-6)/8 11 10 11 12 13 2 12 5 0 2 4 12 94 DAYS WITH CLOUDY (7-8)/8 8 9 10 5 3 2 0 0 0 0 10 2 49 DAYS WITH VISIBILITY =< 2 KM 4 4 0 0 0 0 0 0 1 0 1 1 11 DURATION OF SUNSHINE HOURS 166.8 172.4 183.2 256.0 307.1 338.0 317.2 331.1 303.2 309.9 192.2 218.6 3095.7 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 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 814.3 811.7 810.4 813.3 814.4 811.4 812.4 812.7 813.4 816.4 818.0 816.9 813.8 MAX. QFE PRESSURE IN HPA 821.5 818.9 817.3 817.9 819.4 816.0 818.1 818.9 821.1 823.4 826.1 822.6 826.1 DAY-HOUR 26- 6 8- 6 29- 6 8- 6 17- 6 3- 6 4- 3 29-15 25- 6 2- 6 18- 6 4- 6 MIN. QFE PRESSURE IN HPA 806.9 801.4 804.8 808.0 809.8 806.1 806.3 807.0 806.2 809.5 812.8 812.0 801.4 DAY-HOUR 12-12 5- 3 13-12 13-12 29-12 19-12 6-12 7-15 21-12 27-12 28-12 16-12 MEAN QNH PRESSURE IN HPA 1020.7 1017.6 1016.1 1019.5 1020.8 1017.3 1018.5 1018.8 1019.6 1023.3 1025.1 1023.8 1020.1 MAX. QNH PRESSURE IN HPA 1029.4 1026.2 1024.3 1025.0 1026.8 1022.7 1025.3 1026.2 1028.9 1031.6 1034.9 1030.7 1034.9 DAY-HOUR 26- 6 8- 6 29- 6 8- 6 17- 6 3- 6 4- 3 29-15 25- 6 2- 6 18- 6 4- 6 MIN. QNH PRESSURE IN HPA 1011.8 1005.2 1009.3 1013.1 1015.3 1010.9 1011.1 1011.9 1011.0 1014.9 1018.9 1017.9 1005.2 DAY-HOUR 12-12 5- 3 13-12 13-12 29-12 19-12 6-12 7-15 21-12 27-12 28-12 16-12 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 814.4 811.8 810.5 813.8 815.1 812.4 813.3 813.6 814.2 817.1 818.3 817.2 814.3 MAX. QFE PRESSURE IN HPA 820.5 817.1 816.1 817.4 818.7 815.6 818.1 818.0 819.8 822.8 824.8 821.7 824.8 DAY 26 24 29 8 17 8 4 30 26 2 18 4 MIN. QFE PRESSURE IN HPA 808.0 801.4 804.9 809.3 811.2 808.2 808.1 809.3 808.0 809.7 813.9 813.1 801.4 DAY 19 5 13 3 29 19 7 8 22 27 29 15 MEAN QNH PRESSURE IN HPA 1020.8 1017.7 1016.2 1020.1 1021.7 1018.4 1019.5 1019.9 1020.6 1024.1 1025.5 1024.2 1020.7 MAX. QNH PRESSURE IN HPA 1028.2 1024.1 1022.9 1024.4 1026.0 1022.3 1025.3 1025.1 1027.3 1030.9 1033.3 1029.6 1033.3 DAY 26 24 29 8 17 8 4 30 26 2 18 4 MIN. QNH PRESSURE IN HPA 1013.1 1005.2 1009.4 1014.7 1017.0 1013.4 1013.3 1014.7 1013.1 1015.2 1020.2 1019.3 1005.2 DAY 19 5 13 3 29 19 7 8 22 27 29 15 MEAN QFF PRESSURE IN HPA 1026.7 1016.7 1014.6 1013.1 1009.5 1002.1 1002.3 1002.9 1006.3 1015.7 1022.9 1023.6 1013.0 MAX. QFF PRESSURE IN HPA 1038.1 1024.9 1023.5 1020.2 1014.4 1007.3 1007.0 1012.7 1014.4 1024.4 1033.7 1031.4 1038.1 DAY 26 24 29 6 5 8 22 31 26 19 18 4 MIN. QFF PRESSURE IN HPA 1013.9 1006.6 1007.3 1004.5 1001.3 995.7 996.3 996.4 997.9 1003.1 1014.4 1017.2 995.7 DAY 6 5 25 13 29 19 6 8 22 27 3 22 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 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 815.5 812.9 811.5 814.5 815.4 812.6 813.7 814.2 815.0 817.9 819.3 818.3 815.1 MAX. QFE PRESSURE IN HPA 821.5 818.9 817.3 817.9 819.4 816.0 818.1 818.5 821.1 823.4 826.1 822.6 826.1 DAY 26 8 29 8 17 3 4 30 25 2 18 4 MIN. QFE PRESSURE IN HPA 809.0 802.4 806.1 809.1 810.9 807.9 808.1 810.0 808.8 810.3 814.8 814.1 802.4 DAY 12 5 13 13 29 19 7 8 22 27 28 15 MEAN QNH PRESSURE IN HPA 1022.1 1019.0 1017.4 1021.0 1022.0 1018.7 1020.0 1020.6 1021.5 1025.1 1026.7 1025.5 1021.6 MAX. QNH PRESSURE IN HPA 1029.4 1026.2 1024.3 1025.0 1026.8 1022.7 1025.3 1025.7 1028.9 1031.6 1034.9 1030.7 1034.9 DAY 26 8 29 8 17 3 4 30 25 2 18 4 MIN. QNH PRESSURE IN HPA 1014.3 1006.4 1010.9 1014.5 1016.6 1013.0 1013.3 1015.5 1014.1 1015.9 1021.3 1020.5 1006.4 DAY 12 5 13 13 29 19 7 8 22 27 28 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 814.2 811.8 810.4 813.3 814.3 811.4 812.6 812.9 813.5 816.4 818.0 816.9 813.8 MAX. QFE PRESSURE IN HPA 820.0 818.7 815.8 817.0 818.9 814.6 817.6 817.1 820.1 821.8 824.6 821.0 824.6 DAY 26 8 29 8 17 3 3 30 25 2 18 4 MIN. QFE PRESSURE IN HPA 807.3 803.0 805.2 808.0 810.2 807.1 806.9 808.8 808.1 810.0 813.4 813.1 803.0 DAY 12 5 13 18 29 19 6 8 20 27 28 15 MEAN QNH PRESSURE IN HPA 1020.5 1017.7 1016.1 1019.5 1020.7 1017.2 1018.7 1019.0 1019.8 1023.2 1025.1 1023.8 1020.1 MAX. QNH PRESSURE IN HPA 1027.6 1026.0 1022.5 1023.9 1026.2 1021.1 1024.7 1024.1 1027.7 1029.7 1033.1 1028.8 1033.1 DAY 26 8 29 8 17 3 3 30 25 2 18 4 MIN. QNH PRESSURE IN HPA 1012.3 1007.1 1009.8 1013.1 1015.8 1012.1 1011.8 1014.1 1013.3 1015.5 1019.6 1019.3 1007.1 DAY 12 5 13 18 29 19 6 8 20 27 28 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 813.4 810.7 809.6 812.4 813.4 810.3 811.4 811.4 812.0 815.1 816.8 815.8 812.7 MAX. QFE PRESSURE IN HPA 819.1 817.9 814.8 816.0 817.9 813.5 816.6 815.3 818.3 820.2 823.1 820.0 823.1 DAY 26 8 29 8 17 3 3 29 25 2 15 4 MIN. QFE PRESSURE IN HPA 806.9 803.0 804.8 808.0 809.8 806.1 806.3 807.0 806.2 809.5 812.8 812.0 803.0 DAY 12 5 13 13 29 19 6 8 21 27 28 16 MEAN QNH PRESSURE IN HPA 1019.6 1016.4 1015.1 1018.4 1019.6 1015.9 1017.2 1017.3 1018.0 1021.6 1023.7 1022.5 1018.8 MAX. QNH PRESSURE IN HPA 1026.5 1025.0 1021.3 1022.7 1025.0 1019.7 1023.5 1021.9 1025.5 1027.8 1031.3 1027.6 1031.3 DAY 26 8 29 8 17 3 3 29 25 2 15 4 MIN. QNH PRESSURE IN HPA 1011.8 1007.1 1009.3 1013.1 1015.3 1010.9 1011.1 1011.9 1011.0 1014.9 1018.9 1017.9 1007.1 DAY 12 5 13 13 29 19 6 8 21 27 28 16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 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 814.1 811.3 810.1 812.7 813.7 810.5 811.3 811.5 812.2 815.7 817.6 816.5 813.1 MAX. QFE PRESSURE IN HPA 819.7 818.1 815.7 816.6 817.5 813.8 816.1 818.9 818.3 820.8 824.2 820.1 824.2 DAY 25 8 29 8 17 7 3 29 25 2 15 3 MIN. QFE PRESSURE IN HPA 807.7 804.9 806.0 808.2 810.1 806.7 806.3 807.0 807.0 810.5 813.6 812.5 804.9 DAY 12 5 13 13 29 19 6 7 20 27 1 16 MEAN QNH PRESSURE IN HPA 1020.5 1017.1 1015.7 1018.8 1019.9 1016.2 1017.1 1017.4 1018.2 1022.4 1024.7 1023.3 1019.3 MAX. QNH PRESSURE IN HPA 1027.2 1025.3 1022.4 1023.5 1024.6 1020.1 1022.9 1026.2 1025.5 1028.5 1032.6 1027.7 1032.6 DAY 25 8 29 8 17 7 3 29 25 2 15 3 MIN. QNH PRESSURE IN HPA 1012.8 1009.4 1010.7 1013.4 1015.7 1011.6 1011.1 1011.9 1011.9 1016.1 1019.9 1018.5 1009.4 DAY 12 5 13 13 29 19 6 7 20 27 1 16 MEAN QFF PRESSURE IN HPA 1026.4 1016.1 1013.8 1011.8 1007.7 999.9 999.8 1000.3 1003.7 1014.0 1022.1 1022.7 1011.5 MAX. QFF PRESSURE IN HPA 1038.2 1023.4 1021.7 1018.6 1013.6 1006.0 1003.7 1012.6 1011.8 1022.6 1032.2 1029.6 1038.2 DAY 26 23 28 4 7 7 4 30 25 18 15 3 MIN. QFF PRESSURE IN HPA 1015.6 1004.3 1008.5 1004.1 1000.8 994.0 993.1 993.1 998.6 1005.0 1014.6 1015.1 993.1 DAY 6 10 7 13 29 23 6 7 19 27 6 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 2002,MAY M.(S & A) STATION GOLPAIGAN (99417) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 28 N LONGITUDE 50 17 E DATA PROCESSING CENTER ELEVATION 1870.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.3 3.6 6.0 13.1 18.7 25.4 30.9 30.0 23.3 17.8 8.1 4.1 15.4 MINIMUN AIR TEMPERATURE (C) -2.2 -4.3 -0.2 6.0 11.0 16.8 21.1 19.9 13.5 9.9 3.2 -0.9 7.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 2 19 10 0 0 0 0 31 DAYS WITH MINIMUM TEMP. <=-4 7 14 4 1 0 0 0 0 0 0 0 1 27 DAYS WITH FREEZING MIN.<= 0 25 25 16 1 0 0 0 0 0 0 2 20 89 TEMPERATURE RECORDS LOWEST(C) -10.4 -11.0 -8.0 -5.0 4.6 13.4 16.6 17.0 10.4 5.0 0.0 -6.0 -11.0 DAY 29 1 8 12 6 1 7 31 15 30 25 28 MAXIMUM AIR TEMPERATURE (C) 9.0 9.2 10.6 17.9 23.2 30.0 36.3 35.5 29.1 22.8 12.0 8.7 20.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 17 31 31 11 0 0 0 91 DAYS WITH MAXIMUM TEMP. <= 0 0 0 1 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS HIGHEST(C) 13.4 16.8 17.4 26.2 30.0 33.8 39.0 38.0 32.4 28.0 17.6 13.8 39.0 DAY 10 21 31 26 28 30 13 14 2 4 5 16 DIF. BETWEEN (MAX.-MIN.) (C) 11.2 13.5 10.8 11.9 12.2 13.2 15.2 15.6 15.6 12.9 8.8 9.6 12.6 MEAN DAILY TEMP. (MDT) (C) 3.4 2.5 5.2 12.0 17.1 23.4 28.7 27.7 21.3 16.3 7.6 3.9 14.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 3.6 73.0 238.2 208.4 24.3 2.2 0.0 0.0 549.7 HEATING DEG. DAYS(BASE 18 0C) 452.4 434.9 395.8 184.5 52.7 0.0 0.0 0.0 0.3 69.2 312.6 437.0 2339.4 DEWPOINT (MEAN C) -6.3 -10.3 -5.0 -0.7 3.7 5.7 7.0 5.2 1.7 2.5 0.9 -3.7 0.1 MIXING RATIO (G/KG) 3.01 2.28 3.47 4.72 6.34 7.20 7.92 6.95 5.40 5.77 5.07 3.67 5.15 VAPOUR PRESSURE (HPA) 3.91 2.96 4.48 6.11 8.22 9.29 10.15 8.96 7.02 7.51 6.61 4.77 6.67 SATURATION DEF. (HPA) 4.78 5.56 5.28 9.84 14.29 23.94 36.00 35.14 22.83 13.82 4.49 3.68 14.97 RELATIVE HUMIDITY (MEAN %) 50 38 50 43 41 30 24 22 26 39 63 60 41 RELATIVE HUMIDITY (MAX. %) 68 54 74 67 63 46 34 32 38 57 82 81 58 RELATIVE HUMIDITY (MIN. %) 34 25 35 28 27 21 16 16 17 27 47 40 28 RELATIVE HUMIDITY (MEAN% 03UTC) 67 54 70 64 61 45 34 32 38 55 81 79 57 RELATIVE HUMIDITY (MEAN% 09UTC) 41 31 42 33 31 24 20 18 22 32 54 53 33 RELATIVE HUMIDITY (MEAN% 15UTC) 43 31 47 38 37 26 19 18 20 36 60 53 36 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 6.0 2.4 45.9 37.0 35.1 8.3 0.0 0.0 0.0 1.6 30.4 40.5 207.2 DAYS WITH PRECIPITATION >=10 0 0 2 1 1 0 0 0 0 0 1 1 6 DAYS WITH PRECIPITATION >= 5 0 0 3 3 3 0 0 0 0 0 3 4 16 DAYS WITH PRECIPITATION >= 1 3 1 7 7 8 3 0 0 0 1 4 6 40 DAYS WITH PRECIPITATION 3 3 13 10 15 6 0 0 0 2 8 7 67 GREATEST DAILY PRECIPITATION 2.0 2.0 19.0 13.0 10.0 4.0 0.0 0.0 0.0 1.4 15.0 19.0 19.0 DAY 16 19 13 29 25