STATION HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1951 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.5 -2.9 5.4 10.5 14.6 20.3 24.9 23.8 20.7 13.6 6.0 -0.6 11.2 MINIMUN AIR TEMPERATURE (C) -4.8 -6.6 -0.1 3.9 7.5 11.0 15.2 14.4 11.6 8.1 0.9 -4.3 4.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 18 20 6 0 0 0 0 0 0 0 0 17 61 DAYS WITH FREEZING MIN.<= 0 27 28 16 5 0 0 0 0 0 0 15 26 117 TEMPERATURE RECORDS LOWEST(C) -12.0 -16.0 -6.0 -2.0 1.0 6.0 12.0 11.0 8.0 1.0 -3.0 -12.0 -16.0 DAY 11 9 9 1 11 24 1 18 26 21 11 25 MAXIMUM AIR TEMPERATURE (C) 3.7 2.2 11.1 16.9 21.8 28.2 33.2 32.9 29.3 20.0 12.6 3.9 18.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 4 30 30 13 0 0 0 77 DAYS WITH MAXIMUM TEMP. <= 0 6 10 0 0 0 0 0 0 0 0 0 10 26 TEMPERATURE RECORDS HIGHEST(C) 10.0 8.0 17.0 22.0 28.0 30.0 37.0 37.0 33.0 27.0 18.0 13.0 37.0 DAY 1 19 24 18 23 17 24 9 1 1 14 1 DIF. BETWEEN (MAX.-MIN.) (C) 8.5 8.8 11.2 13.0 14.3 17.2 18.0 18.5 17.7 11.9 11.7 8.2 13.3 MEAN DAILY TEMP. (MDT) (C) -0.6 -2.2 5.5 10.4 14.6 19.6 24.2 23.6 20.4 14.0 6.7 -0.2 11.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 2.0 94.0 81.5 20.5 0.0 0.0 0.0 198.0 HEATING DEG. DAYS(BASE 18 0C) 576.0 565.0 387.5 229.0 106.0 1.0 0.0 0.0 5.0 125.5 337.5 564.5 2897.0 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. 52.0 84.0 31.0 69.0 33.5 1.0 0.0 5.0 1.4 15.0 85.0 61.0 437.9 DAYS WITH PRECIPITATION >=10 1 4 0 2 0 0 0 0 0 0 2 2 11 DAYS WITH PRECIPITATION >= 5 5 5 3 5 2 0 0 1 0 2 5 4 32 DAYS WITH PRECIPITATION >= 1 9 9 10 8 9 1 0 1 1 3 6 7 64 DAYS WITH PRECIPITATION 10 10 10 8 10 1 0 3 2 7 6 8 75 GREATEST DAILY PRECIPITATION 16.0 22.0 7.0 24.0 9.0 1.0 0.0 5.0 1.0 8.0 43.0 26.0 43.0 DAY 7 11 7 15 9 1 ** 15 30 14 8 3 DAY WITH THUNDER STORM 0 0 2 8 5 1 0 1 0 1 1 0 19 DAYS WITH SNOW OR SLEET 9 11 4 0 0 0 0 0 0 0 1 6 31 DAYS WITH DUST 0 0 0 0 0 0 0 0 1 2 0 4 7 WIND DIRECTION (PREVAILING) 225 270 225 225 270 225 270 270 270 270 225 225 225 PREVAILING WIND SPEED(KNOTS) 8.3 3.6 6.1 7.3 6.5 4.2 3.8 4.3 4.5 10.4 4.4 7.8 6.4 PREVAILING WIND PERCENT 28.2 21.9 29.8 29.2 26.6 27.1 27.4 27.4 35.0 36.7 27.5 34.3 27.9 CALMS PERCENT OF WIND 13.3 20.1 9.7 8.3 11.7 22.5 16.5 10.9 6.8 6.9 16.3 13.7 13.0 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 234 248 240 248 2914 VECTOR WIND DIRECTION (MEAN) 217 246 242 240 236 232 219 223 244 244 236 241 237 VECTOR WIND MAGNITUDE(KNOTS) 3.7 1.4 3.0 3.3 3.6 1.8 1.9 1.6 3.2 7.4 2.2 3.9 3.0 WIND STEADINESES (MEAN %) 71.2 56.0 71.4 63.5 64.3 64.3 50.0 43.2 80.0 83.1 68.7 81.3 66.7 WIND SPEED (MEAN KNOTS) 5.2 2.5 4.2 5.2 5.6 2.8 3.8 3.7 4.0 8.9 3.2 4.8 4.5 FASTEST WIND DIRECTION 180 230 230 230 270 230 230 90 270 270 270 230 270 FASTEST WIND SPEED (KNOTS) 35 20 25 25 40 20 21 20 24 30 30 26 40 DAY 21 19 10 25 20 2 27 11 15 4 9 16 DAYS WITH SKY CLEAR (0-2)/8 14 7 10 15 8 28 31 29 27 14 14 9 206 DAYS WITH P.CLOUDY (3-6)/8 6 11 15 14 21 2 0 2 3 14 11 12 111 DAYS WITH CLOUDY (7-8)/8 10 10 6 1 2 0 0 0 0 3 5 10 47 DAYS WITH VISIBILITY =< 2 KM 10 7 4 6 0 0 0 0 1 0 3 7 38 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1951 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 HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1951 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 HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1951 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 HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1952 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -3.9 2.6 5.4 11.0 15.2 20.0 23.8 22.9 19.7 14.4 4.2 2.5 11.5 MINIMUN AIR TEMPERATURE (C) -8.6 -1.5 ***** 5.6 9.0 ***** 16.5 13.4 11.0 6.1 -1.2 -1.8 ***** DAYS WITH MINIMUM TEMP. >=21 0 0 **** 0 0 **** 1 0 0 0 0 0 **** DAYS WITH MINIMUM TEMP. <=-4 27 11 **** 0 0 **** 0 0 0 0 10 6 **** DAYS WITH FREEZING MIN.<= 0 30 18 **** 3 0 **** 0 0 0 0 16 28 **** TEMPERATURE RECORDS LOWEST(C) -19.0 -8.0 ***** -1.0 1.0 ***** 13.0 9.0 8.0 1.0 -14.0 -7.0 ***** DAY 6 13 ** 18 12 ** 16 24 11 24 20 18 MAXIMUM AIR TEMPERATURE (C) 1.9 7.5 10.9 16.6 21.7 27.6 31.8 31.7 28.4 23.2 10.5 8.7 18.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 3 24 30 8 0 0 0 65 DAYS WITH MAXIMUM TEMP. <= 0 7 1 0 0 0 0 0 0 0 0 4 1 13 TEMPERATURE RECORDS HIGHEST(C) 9.0 13.0 22.0 26.0 28.0 34.0 34.0 34.0 32.0 29.0 21.0 17.0 34.0 DAY 22 8 31 7 27 30 1 9 1 8 3 11 DIF. BETWEEN (MAX.-MIN.) (C) 10.5 9.0 ***** 11.0 12.7 ***** 15.3 18.3 17.4 17.1 11.7 10.5 ***** MEAN DAILY TEMP. (MDT) (C) -3.3 3.0 ***** 11.1 15.3 ***** 24.2 22.6 19.7 14.6 4.6 3.5 ***** COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 0.0 98.5 46.0 13.0 0.0 0.0 0.0 ****** HEATING DEG. DAYS(BASE 18 0C) 661.5 435.5 0.0 209.0 93.5 0.0 0.0 0.0 5.0 105.5 400.5 451.0 ****** DEWPOINT (MEAN C) ***** ***** ***** ***** ***** ***** ***** 6.2 6.2 0.5 -4.4 -2.5 ***** MIXING RATIO (G/KG) ****** ****** ****** ****** ****** ****** ****** 7.51 7.42 5.03 3.52 3.98 ****** VAPOUR PRESSURE (HPA) ****** ****** ****** ****** ****** ****** ****** 9.68 9.60 6.53 4.58 5.17 ****** SATURATION DEF. (HPA) ****** ****** ****** ****** ****** ****** ****** 19.58 14.62 10.84 4.70 2.45 ****** RELATIVE HUMIDITY (MEAN %) *** *** *** *** *** *** *** 37 44 41 60 72 *** RELATIVE HUMIDITY (MAX. %) *** *** *** *** *** *** *** 55 64 59 74 85 *** RELATIVE HUMIDITY (MIN. %) *** *** *** *** *** *** *** 21 28 23 43 55 *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** *** *** *** *** *** 51 60 57 67 80 *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** *** *** *** *** *** 26 30 27 50 65 *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** *** *** *** *** *** 27 35 36 56 69 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 32.8 72.1 67.4 107.0 63.0 0.0 0.0 0.0 6.0 0.0 14.0 14.4 376.7 DAYS WITH PRECIPITATION >=10 1 3 2 5 3 0 0 0 0 0 0 0 14 DAYS WITH PRECIPITATION >= 5 3 6 4 6 5 0 0 0 1 0 2 1 28 DAYS WITH PRECIPITATION >= 1 4 8 9 10 6 0 0 0 1 0 2 5 45 DAYS WITH PRECIPITATION 6 10 11 13 9 0 0 0 4 0 2 6 61 GREATEST DAILY PRECIPITATION 14.0 20.0 27.0 29.0 17.0 0.0 0.0 0.0 6.0 0.0 8.0 6.0 29.0 DAY 10 23 1 22 7 ** ** ** 9 ** 18 12 DAY WITH THUNDER STORM 0 0 1 2 5 0 0 0 3 0 1 0 12 DAYS WITH SNOW OR SLEET 7 2 5 1 0 0 0 0 0 0 6 2 23 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 225 225 225 225 225 225 225 225 225 225 270 225 225 PREVAILING WIND SPEED(KNOTS) 3.3 12.2 12.0 8.3 5.5 4.4 3.6 3.1 3.0 4.2 5.8 3.8 6.2 PREVAILING WIND PERCENT 22.6 45.3 56.5 40.0 44.3 45.8 33.9 36.3 42.1 37.1 25.8 27.0 37.8 CALMS PERCENT OF WIND 27.4 6.5 6.9 10.0 6.1 10.5 15.3 15.7 6.3 13.3 24.2 33.9 14.7 NO. OF WIND OBSERVATION 248 232 248 240 246 238 248 248 240 248 240 248 2924 VECTOR WIND DIRECTION (MEAN) 248 228 232 235 238 239 221 220 240 242 239 244 234 VECTOR WIND MAGNITUDE(KNOTS) 1.5 7.1 8.2 4.8 4.1 3.3 2.0 1.6 2.0 2.7 2.6 1.7 3.4 WIND STEADINESES (MEAN %) 60.0 81.6 89.1 77.4 77.4 82.5 64.5 59.3 71.4 77.1 72.2 73.9 75.6 WIND SPEED (MEAN KNOTS) 2.5 8.7 9.2 6.2 5.3 4.0 3.1 2.7 2.8 3.5 3.6 2.3 4.5 FASTEST WIND DIRECTION 180 230 230 230 270 230 50 90 270 220 230 230 230 FASTEST WIND SPEED (KNOTS) 15 25 34 30 24 20 15 25 15 30 20 20 34 DAY 11 3 3 11 5 5 8 16 2 14 4 10 DAYS WITH SKY CLEAR (0-2)/8 14 13 9 11 16 30 22 26 27 29 17 16 230 DAYS WITH P.CLOUDY (3-6)/8 8 8 13 9 12 0 8 5 2 2 8 9 84 DAYS WITH CLOUDY (7-8)/8 9 8 9 10 3 0 1 0 1 0 5 5 51 DAYS WITH VISIBILITY =< 2 KM 10 8 5 4 1 1 1 0 0 3 7 6 46 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1952 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 811.8 814.6 814.4 813.6 814.1 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 819.2 818.2 818.5 816.4 819.7 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** 3- 9 29- 9 2- 6 19- 9 29-18 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 808.3 811.6 810.9 810.8 810.7 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** 19-15 9- 3 24- 6 4- 0 10-12 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 995.0 998.3 998.0 997.0 997.7 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 1003.7 1002.5 1002.9 1000.4 1004.3 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** 3- 9 29- 9 2- 6 19- 9 29-18 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 990.8 994.7 993.9 993.8 993.7 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** 19-15 9- 3 24- 6 4- 0 10-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 981.1 986.4 989.8 996.1 997.8 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 988.7 992.1 995.8 1008.2 1006.0 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** 3- 9 13- 6 17- 3 20- 6 29-18 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 975.1 979.7 985.6 984.8 989.3 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** 2- 9 2- 0 10-21 4- 0 10-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 811.6 814.3 814.4 813.4 814.0 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 813.9 817.0 817.6 815.5 816.0 ****** DAY ** ** ** ** ** ** ** 21 29 2 19 25 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 808.9 811.8 813.1 810.8 811.0 ****** DAY ** ** ** ** ** ** ** 2 9 7 4 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 994.7 997.9 998.1 996.8 997.6 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 997.4 1001.1 1001.8 999.3 999.9 ****** DAY ** ** ** ** ** ** ** 21 29 2 19 25 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 991.5 995.0 996.5 993.8 994.0 ****** DAY ** ** ** ** ** ** ** 2 9 7 4 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 980.6 985.9 989.3 995.2 997.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 984.4 990.0 992.8 1006.2 1003.8 ****** DAY ** ** ** ** ** ** ** 24 13 31 20 18 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 975.8 979.7 986.4 984.8 990.3 ****** DAY ** ** ** ** ** ** ** 2 2 9 4 10 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 811.8 814.4 814.6 813.4 814.0 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 814.0 816.9 818.2 815.4 816.2 ****** DAY ** ** ** ** ** ** ** 21 29 17 19 25 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 809.5 811.6 812.8 811.2 811.2 ****** DAY ** ** ** ** ** ** ** 2 9 7 4 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 994.9 998.0 998.3 996.8 997.6 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 997.6 1001.0 1002.5 999.2 1000.2 ****** DAY ** ** ** ** ** ** ** 21 29 17 19 25 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 992.2 994.7 996.1 994.3 994.3 ****** DAY ** ** ** ** ** ** ** 2 9 7 4 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 981.9 986.9 991.3 996.6 998.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 985.1 991.0 995.8 1006.9 1001.9 ****** DAY ** ** ** ** ** ** ** 24 13 17 20 17 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 978.3 981.3 987.6 986.6 992.2 ****** DAY ** ** ** ** ** ** ** 2 2 7 4 11 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1952 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 812.9 815.4 815.1 813.8 814.3 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 814.5 817.4 818.5 815.7 816.4 ****** DAY ** ** ** ** ** ** ** 26 26 2 19 25 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 809.2 812.2 810.9 811.7 811.2 ****** DAY ** ** ** ** ** ** ** 2 9 24 4 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 996.2 999.2 998.8 997.4 998.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 998.1 1001.6 1002.9 999.6 1000.4 ****** DAY ** ** ** ** ** ** ** 26 26 2 19 25 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 991.9 995.4 993.9 994.8 994.3 ****** DAY ** ** ** ** ** ** ** 2 9 24 4 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 982.5 987.5 991.1 996.8 998.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 985.8 992.1 994.5 1008.2 1004.3 ****** DAY ** ** ** ** ** ** ** 24 13 31 20 18 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 977.7 981.1 987.5 987.0 992.1 ****** DAY ** ** ** ** ** ** ** 2 2 15 4 11 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 812.3 815.2 814.7 813.8 814.3 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 819.2 818.2 818.5 816.4 816.6 ****** DAY ** ** ** ** ** ** ** 3 29 2 19 24 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 808.5 812.7 813.1 812.3 811.4 ****** DAY ** ** ** ** ** ** ** 2 9 21 20 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 995.6 999.0 998.4 997.4 997.9 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 1003.7 1002.5 1002.9 1000.4 1000.6 ****** DAY ** ** ** ** ** ** ** 3 29 2 19 24 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 991.1 996.0 996.5 995.5 994.5 ****** DAY ** ** ** ** ** ** ** 2 9 21 20 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 980.7 986.0 988.9 995.8 997.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 988.7 990.0 992.3 1007.7 1002.5 ****** DAY ** ** ** ** ** ** ** 3 29 31 19 17 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 975.1 980.9 986.1 987.1 991.0 ****** DAY ** ** ** ** ** ** ** 2 2 6 4 10 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 811.6 814.6 814.0 813.5 813.8 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 813.8 817.0 817.0 814.8 816.5 ****** DAY ** ** ** ** ** ** ** 18 26 1 23 24 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 808.4 812.3 812.9 812.0 810.7 ****** DAY ** ** ** ** ** ** ** 6 5 27 3 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 994.7 998.2 997.5 996.9 997.3 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 997.3 1001.1 1001.1 998.5 1000.5 ****** DAY ** ** ** ** ** ** ** 18 26 1 23 24 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 990.9 995.5 996.3 995.2 993.7 ****** DAY ** ** ** ** ** ** ** 6 5 27 3 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 980.4 986.1 988.8 995.3 996.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 984.4 990.3 992.0 1005.0 1002.8 ****** DAY ** ** ** ** ** ** ** 18 26 23 20 17 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 976.7 981.1 985.9 988.3 990.2 ****** DAY ** ** ** ** ** ** ** 8 2 8 3 10 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1952 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 811.2 814.3 814.1 813.5 814.0 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 813.6 816.5 816.3 815.0 819.5 ****** DAY ** ** ** ** ** ** ** 18 28 1 23 25 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 808.3 812.2 812.6 811.4 811.3 ****** DAY ** ** ** ** ** ** ** 19 5 13 3 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 994.3 997.9 997.6 997.0 997.6 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 997.1 1000.5 1000.3 998.7 1004.0 ****** DAY ** ** ** ** ** ** ** 18 28 1 23 25 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 990.8 995.4 995.9 994.5 994.4 ****** DAY ** ** ** ** ** ** ** 19 5 13 3 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 981.1 986.8 990.6 996.8 998.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 984.6 990.4 994.8 1006.5 1004.5 ****** DAY ** ** ** ** ** ** ** 18 9 24 19 25 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 977.9 981.7 987.2 988.8 992.0 ****** DAY ** ** ** ** ** ** ** 19 2 13 4 10 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 811.8 814.5 814.2 813.6 814.3 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 814.1 817.2 817.8 815.4 819.7 ****** DAY ** ** ** ** ** ** ** 5 28 16 18 29 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 808.4 812.0 812.9 811.6 811.6 ****** DAY ** ** ** ** ** ** ** 6 5 17 3 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 995.0 998.1 997.8 997.1 997.9 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 997.7 1001.3 1002.0 999.2 1004.3 ****** DAY ** ** ** ** ** ** ** 5 28 16 18 29 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 990.9 995.2 996.3 994.7 994.7 ****** DAY ** ** ** ** ** ** ** 6 5 17 3 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 981.4 986.5 990.3 996.5 998.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 985.2 990.3 994.8 1006.7 1006.0 ****** DAY ** ** ** ** ** ** ** 24 12 16 19 29 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 977.0 981.7 986.0 987.7 990.1 ****** DAY ** ** ** ** ** ** ** 6 1 6 4 10 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 811.7 814.5 814.4 813.6 814.1 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 813.8 817.6 817.9 815.6 816.4 ****** DAY ** ** ** ** ** ** ** 20 28 16 18 24 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 808.6 812.0 813.1 811.3 811.8 ****** DAY ** ** ** ** ** ** ** 6 8 11 3 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 994.9 998.2 998.0 997.1 997.7 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 997.3 1001.8 1002.2 999.4 1000.4 ****** DAY ** ** ** ** ** ** ** 20 28 16 18 24 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 991.2 995.2 996.5 994.4 995.0 ****** DAY ** ** ** ** ** ** ** 6 8 11 3 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 980.1 985.3 988.7 995.6 997.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 983.8 989.3 992.6 1006.5 1003.1 ****** DAY ** ** ** ** ** ** ** 23 28 16 19 17 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 975.5 980.4 985.6 985.8 989.3 ****** DAY ** ** ** ** ** ** ** 1 1 10 3 10 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1953 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.4 2.8 3.0 10.8 15.3 20.5 24.5 24.0 20.9 12.8 4.0 -3.0 11.5 MINIMUN AIR TEMPERATURE (C) -1.7 -1.4 -1.1 ***** 10.2 14.3 ***** ***** ***** ***** ***** ***** ***** DAYS WITH MINIMUM TEMP. >=21 0 0 0 **** 0 0 **** **** **** **** **** **** **** DAYS WITH MINIMUM TEMP. <=-4 8 5 6 **** 0 0 **** **** **** **** **** **** **** DAYS WITH FREEZING MIN.<= 0 23 22 23 **** 0 0 **** **** **** **** **** **** **** TEMPERATURE RECORDS LOWEST(C) -5.0 -6.0 -6.0 ***** 7.0 9.0 ***** ***** ***** ***** ***** ***** ***** DAY 14 13 9 ** 3 1 ** ** ** ** ** ** MAXIMUM AIR TEMPERATURE (C) 8.3 8.3 8.5 16.7 21.1 27.1 32.1 32.1 29.4 20.7 9.3 1.9 18.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 8 26 26 16 0 0 0 76 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 10 10 TEMPERATURE RECORDS HIGHEST(C) 13.0 15.0 15.0 21.0 25.0 31.0 36.0 35.0 34.0 28.0 16.0 7.0 36.0 DAY 2 16 1 15 18 27 15 13 1 6 2 2 DIF. BETWEEN (MAX.-MIN.) (C) 10.0 9.7 9.6 ***** 10.9 12.8 ***** ***** ***** ***** ***** ***** ***** MEAN DAILY TEMP. (MDT) (C) 3.3 3.5 3.7 ***** 15.6 20.7 ***** ***** ***** ***** ***** ***** ***** COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 22.5 0.0 0.0 0.0 0.0 0.0 0.0 ****** HEATING DEG. DAYS(BASE 18 0C) 455.0 406.5 442.0 96.5 75.0 6.0 0.0 0.0 0.0 0.0 0.0 0.0 ****** DEWPOINT (MEAN C) -3.5 -4.4 -3.0 0.9 2.5 4.7 5.9 6.4 2.6 1.1 -1.7 -5.5 0.5 MIXING RATIO (G/KG) 3.69 3.45 3.84 5.14 5.83 6.69 7.39 7.62 5.72 5.14 4.25 3.26 5.17 VAPOUR PRESSURE (HPA) 4.80 4.48 4.98 6.67 7.55 8.64 9.53 9.83 7.44 6.70 5.53 4.25 6.70 SATURATION DEF. (HPA) 2.68 3.19 2.88 6.79 10.30 16.42 22.39 21.21 18.64 9.52 2.88 0.90 9.82 RELATIVE HUMIDITY (MEAN %) 67 62 67 54 45 37 33 35 32 50 69 84 53 RELATIVE HUMIDITY (MAX. %) 82 78 83 72 64 52 47 51 50 69 86 92 69 RELATIVE HUMIDITY (MIN. %) 50 45 50 35 30 26 21 21 19 32 48 71 37 RELATIVE HUMIDITY (MEAN% 03UTC) 76 71 73 64 54 47 44 48 46 64 78 87 63 RELATIVE HUMIDITY (MEAN% 09UTC) 59 54 62 42 39 31 29 28 22 39 58 80 45 RELATIVE HUMIDITY (MEAN% 15UTC) 62 58 62 48 39 29 24 24 23 43 66 84 47 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 20.0 80.0 64.6 65.0 44.0 1.0 0.0 0.0 0.0 19.1 102.0 44.0 439.7 DAYS WITH PRECIPITATION >=10 0 2 2 1 1 0 0 0 0 0 5 1 12 DAYS WITH PRECIPITATION >= 5 1 6 4 6 3 0 0 0 0 3 8 3 34 DAYS WITH PRECIPITATION >= 1 6 7 8 11 10 1 0 0 0 4 11 9 67 DAYS WITH PRECIPITATION 6 7 12 11 10 1 0 1 0 6 12 11 77 GREATEST DAILY PRECIPITATION 5.0 27.0 20.0 18.0 12.0 1.0 0.0 0.0 0.0 5.6 18.0 16.0 27.0 DAY 11 2 2 2 7 5 ** ** ** 25 17 4 DAY WITH THUNDER STORM 0 0 1 3 2 1 0 0 0 0 2 0 9 DAYS WITH SNOW OR SLEET 5 6 6 0 0 0 0 0 0 0 3 11 31 DAYS WITH DUST 0 1 0 0 0 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 270 225 225 225 270 225 225 225 225 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 6.6 9.7 9.8 8.3 6.2 3.4 4.4 4.6 4.1 6.0 9.7 4.9 6.5 PREVAILING WIND PERCENT 27.4 34.1 41.9 37.2 38.8 38.0 36.7 38.1 39.1 48.0 38.5 18.5 35.8 CALMS PERCENT OF WIND 29.0 27.8 20.7 11.7 8.6 15.0 10.1 8.1 10.5 5.6 10.9 49.2 17.3 NO. OF WIND OBSERVATION 248 223 246 239 245 234 248 247 238 248 239 248 2903 VECTOR WIND DIRECTION (MEAN) 246 233 234 240 246 244 237 224 234 235 234 239 237 VECTOR WIND MAGNITUDE(KNOTS) 3.6 4.2 5.2 5.1 3.9 2.5 2.7 2.8 2.9 4.0 5.8 1.8 3.7 WIND STEADINESES (MEAN %) 80.0 72.4 88.1 83.6 76.5 80.6 77.1 66.7 70.7 83.3 80.6 78.3 78.7 WIND SPEED (MEAN KNOTS) 4.5 5.8 5.9 6.1 5.1 3.1 3.5 4.2 4.1 4.8 7.2 2.3 4.7 FASTEST WIND DIRECTION 230 270 230 230 230 270 230 230 270 230 230 270 270 FASTEST WIND SPEED (KNOTS) 30 35 35 30 30 20 20 20 20 30 30 25 35 DAY 22 25 5 21 4 8 20 5 9 22 29 27 DAYS WITH SKY CLEAR (0-2)/8 14 11 10 11 13 25 27 27 28 20 10 8 204 DAYS WITH P.CLOUDY (3-6)/8 9 10 16 15 13 5 4 4 2 7 13 5 103 DAYS WITH CLOUDY (7-8)/8 8 7 5 4 5 0 0 0 0 4 7 18 58 DAYS WITH VISIBILITY =< 2 KM 0 4 1 1 0 1 0 1 0 0 2 9 19 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1953 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 813.5 813.4 811.6 814.0 814.0 813.1 812.6 812.7 815.6 817.9 814.7 814.7 814.0 MAX. QFE PRESSURE IN HPA 815.9 818.7 819.6 819.5 816.3 815.9 824.3 817.8 820.2 823.9 819.5 819.7 824.3 DAY-HOUR 18- 6 26- 9 9- 6 4- 6 25- 0 17- 6 17- 6 31- 9 30-21 12- 6 14- 6 2- 3 MIN. QFE PRESSURE IN HPA 810.2 810.4 805.7 808.2 808.0 810.4 807.4 809.0 812.0 811.7 808.2 808.8 805.7 DAY-HOUR 16-12 17-18 13- 9 20-15 7-12 24-15 28-15 4-12 20- 9 23-12 19-12 21-12 MEAN QNH PRESSURE IN HPA 997.0 996.9 994.7 997.5 997.5 996.5 995.9 996.0 999.5 1002.1 998.4 998.3 997.5 MAX. QNH PRESSURE IN HPA 999.8 1003.1 1004.2 1004.0 1000.3 999.8 1009.7 1002.0 1004.9 1009.2 1004.0 1004.3 1009.7 DAY-HOUR 18- 6 26- 9 9- 6 4- 6 25- 0 17- 6 17- 6 31- 9 30-21 12- 6 14- 6 2- 3 MIN. QNH PRESSURE IN HPA 993.1 993.3 987.8 990.7 990.5 993.3 989.8 991.7 995.2 994.8 990.7 991.4 987.8 DAY-HOUR 16-12 17-18 13- 9 20-15 7-12 24-15 28-15 4-12 20- 9 23-12 19-12 21-12 MEAN QFF PRESSURE IN HPA 997.2 996.8 994.4 991.8 988.7 984.3 981.0 981.4 987.1 995.0 997.4 1002.7 991.5 MAX. QFF PRESSURE IN HPA 1003.6 1005.8 1006.5 999.5 992.6 990.6 994.0 986.8 994.2 1007.2 1005.1 1014.1 1014.1 DAY-HOUR 18- 6 26- 6 9- 6 4- 6 31- 0 1- 3 17- 6 31-15 30-15 26- 3 30- 6 24- 6 MIN. QFF PRESSURE IN HPA 990.6 990.1 985.9 984.5 982.3 979.3 975.7 976.4 981.5 988.2 988.7 994.1 975.7 DAY-HOUR 23- 9 17-18 12-18 20-21 7-12 24-18 28-12 24-12 2-12 3-12 19-12 27-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 813.6 813.3 811.3 813.9 814.1 813.4 812.7 812.7 815.7 817.9 814.7 814.8 814.0 MAX. QFE PRESSURE IN HPA 815.4 816.2 818.2 816.4 816.3 815.2 816.4 816.2 818.5 822.0 818.7 819.5 822.0 DAY 19 15 11 6 25 17 19 31 20 12 14 2 MIN. QFE PRESSURE IN HPA 811.5 811.0 806.5 808.9 810.2 811.6 810.3 810.4 814.0 812.2 808.9 809.8 806.5 DAY 23 24 13 21 8 15 6 24 10 31 20 21 MEAN QNH PRESSURE IN HPA 997.1 996.8 994.3 997.4 997.6 996.9 996.0 996.0 999.6 1002.2 998.4 998.5 997.6 MAX. QNH PRESSURE IN HPA 999.2 1000.2 1002.5 1000.4 1000.3 999.0 1000.4 1000.2 1002.9 1007.0 1003.1 1004.0 1007.0 DAY 19 15 11 6 25 17 19 31 20 12 14 2 MIN. QNH PRESSURE IN HPA 994.6 994.0 988.7 991.5 993.1 994.7 993.2 993.3 997.6 995.4 991.5 992.6 988.7 DAY 23 24 13 21 8 15 6 24 10 31 20 21 MEAN QFF PRESSURE IN HPA 996.6 996.1 993.7 991.7 988.7 984.6 980.8 981.0 986.6 994.3 996.7 1002.1 991.1 MAX. QFF PRESSURE IN HPA 1001.7 1000.7 1001.6 995.7 992.6 989.9 984.2 984.4 991.6 1003.9 1002.4 1007.6 1007.6 DAY 18 26 10 2 31 1 20 31 27 27 30 11 MIN. QFF PRESSURE IN HPA 992.5 992.1 987.2 984.9 985.2 980.2 976.8 977.5 982.3 989.4 989.9 995.5 976.8 DAY 22 18 13 21 8 29 12 24 3 4 20 28 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 813.5 813.4 811.5 813.9 814.1 813.5 813.1 812.9 816.1 818.1 814.7 814.7 814.1 MAX. QFE PRESSURE IN HPA 815.5 816.5 818.0 816.9 816.1 815.4 816.2 816.4 819.3 822.4 818.6 819.7 822.4 DAY 18 15 11 6 2 6 19 31 20 2 14 2 MIN. QFE PRESSURE IN HPA 811.4 810.9 806.2 809.1 810.9 811.6 810.8 810.7 814.1 812.5 809.2 809.3 806.2 DAY 16 24 13 21 8 30 12 24 10 31 20 21 MEAN QNH PRESSURE IN HPA 997.0 996.9 994.6 997.5 997.7 996.9 996.5 996.2 1000.0 1002.4 998.4 998.4 997.7 MAX. QNH PRESSURE IN HPA 999.3 1000.5 1002.3 1001.0 1000.0 999.2 1000.2 1000.4 1003.8 1007.5 1003.0 1004.3 1007.5 DAY 18 15 11 6 2 6 19 31 20 2 14 2 MIN. QNH PRESSURE IN HPA 994.5 993.9 988.4 991.8 993.9 994.7 993.8 993.7 997.7 995.8 991.9 992.0 988.4 DAY 16 24 13 21 8 30 12 24 10 31 20 21 MEAN QFF PRESSURE IN HPA 997.9 997.5 994.9 992.5 989.6 985.6 982.4 982.5 988.7 996.4 998.3 1003.7 992.5 MAX. QFF PRESSURE IN HPA 1003.3 1003.6 1003.3 997.4 992.5 990.6 986.4 986.1 993.7 1007.2 1004.8 1011.2 1011.2 DAY 18 26 10 6 31 1 18 31 27 26 30 24 MIN. QFF PRESSURE IN HPA 993.1 993.9 987.8 986.4 986.3 981.4 979.0 979.0 983.8 990.6 990.8 994.6 979.0 DAY 23 10 21 21 8 30 12 24 2 23 20 28 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1953 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 813.8 813.9 812.2 814.6 814.5 813.7 813.9 813.5 816.7 818.8 815.5 815.1 814.7 MAX. QFE PRESSURE IN HPA 815.9 818.4 819.6 819.5 816.3 815.9 824.3 817.2 819.9 823.9 819.5 819.7 824.3 DAY 18 26 9 4 25 17 17 31 20 12 14 2 MIN. QFE PRESSURE IN HPA 810.7 811.2 806.3 809.9 812.0 812.0 810.9 810.5 814.0 813.3 810.6 809.6 806.3 DAY 23 23 13 21 8 30 2 24 25 30 20 20 MEAN QNH PRESSURE IN HPA 997.3 997.4 995.5 998.3 998.1 997.2 997.4 997.0 1000.8 1003.2 999.3 998.8 998.4 MAX. QNH PRESSURE IN HPA 999.8 1002.7 1004.2 1004.0 1000.3 999.8 1009.7 1001.3 1004.5 1009.2 1004.0 1004.3 1009.7 DAY 18 26 9 4 25 17 17 31 20 12 14 2 MIN. QNH PRESSURE IN HPA 993.7 994.3 988.5 992.7 995.2 995.2 993.9 993.4 997.6 996.7 993.5 992.4 988.5 DAY 23 23 13 21 8 30 2 24 25 30 20 20 MEAN QFF PRESSURE IN HPA 998.1 997.8 995.5 992.6 989.1 984.7 982.5 982.6 988.6 996.5 998.7 1003.6 992.5 MAX. QFF PRESSURE IN HPA 1003.6 1005.8 1006.5 999.5 991.9 990.1 994.0 986.2 993.9 1006.3 1005.1 1014.1 1014.1 DAY 18 26 9 4 1 1 17 30 28 26 30 24 MIN. QFF PRESSURE IN HPA 991.0 994.1 987.9 986.5 986.5 980.0 978.1 978.8 983.6 991.1 992.7 995.6 978.1 DAY 23 17 13 21 21 30 11 24 10 23 20 28 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 813.6 813.7 812.1 814.3 814.3 813.3 813.2 813.3 815.9 818.2 815.1 814.8 814.3 MAX. QFE PRESSURE IN HPA 815.4 818.7 818.5 817.0 816.1 815.5 817.3 817.8 819.0 822.9 819.2 819.6 822.9 DAY 18 26 10 4 11 17 18 31 30 12 14 5 MIN. QFE PRESSURE IN HPA 810.2 811.2 805.7 810.6 812.2 811.1 810.6 810.3 812.0 812.1 811.3 809.1 805.7 DAY 23 23 13 10 7 30 24 24 20 30 26 21 MEAN QNH PRESSURE IN HPA 997.1 997.2 995.3 997.9 997.9 996.7 996.6 996.7 999.7 1002.5 998.9 998.5 997.9 MAX. QNH PRESSURE IN HPA 999.2 1003.1 1002.9 1001.1 1000.0 999.3 1001.4 1002.0 1003.5 1008.0 1003.7 1004.2 1008.0 DAY 18 26 10 4 11 17 18 31 30 12 14 5 MIN. QNH PRESSURE IN HPA 993.1 994.3 987.8 993.5 995.4 994.1 993.5 993.2 995.2 995.3 994.4 991.8 987.8 DAY 23 23 13 10 7 30 24 24 20 30 26 21 MEAN QFF PRESSURE IN HPA 997.0 996.7 994.6 991.5 988.2 984.3 981.0 981.3 986.5 994.6 997.3 1002.3 991.3 MAX. QFF PRESSURE IN HPA 1002.5 1004.0 1003.8 996.4 991.0 988.6 985.1 985.1 992.1 1006.9 1003.2 1011.8 1011.8 DAY 18 26 9 4 24 5 18 31 30 26 30 24 MIN. QFF PRESSURE IN HPA 990.6 992.6 987.5 986.8 985.3 979.5 977.3 977.4 982.3 988.8 992.7 995.5 977.3 DAY 23 19 13 20 21 25 11 24 2 3 4 28 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 813.2 813.2 811.4 813.6 813.6 812.7 812.1 812.4 814.9 817.0 814.0 814.4 813.5 MAX. QFE PRESSURE IN HPA 815.0 817.3 819.1 815.9 815.7 814.4 816.4 816.9 817.7 821.6 817.9 818.8 821.6 DAY 2 26 9 4 30 10 18 31 30 26 14 5 MIN. QFE PRESSURE IN HPA 810.2 810.7 806.2 808.9 808.0 810.9 808.5 809.0 812.8 811.7 808.2 808.8 806.2 DAY 16 23 13 20 7 24 28 4 20 23 19 21 MEAN QNH PRESSURE IN HPA 996.6 996.6 994.5 997.1 997.1 996.0 995.3 995.6 998.6 1001.1 997.6 998.0 997.0 MAX. QNH PRESSURE IN HPA 998.7 1001.4 1003.6 999.8 999.6 998.0 1000.4 1001.0 1001.9 1006.5 1002.2 1003.2 1006.5 DAY 2 26 9 4 30 10 18 31 30 26 14 5 MIN. QNH PRESSURE IN HPA 993.1 993.7 988.4 991.5 990.5 993.9 991.1 991.7 996.1 994.8 990.7 991.4 988.4 DAY 16 23 13 20 7 24 28 4 20 23 19 21 MEAN QFF PRESSURE IN HPA 996.0 995.8 993.8 991.2 988.1 983.5 979.9 980.5 985.8 993.1 995.8 1001.4 990.4 MAX. QFF PRESSURE IN HPA 1000.4 1001.7 1004.6 995.2 991.7 987.9 984.6 985.7 991.4 1002.0 1001.5 1006.6 1006.6 DAY 18 26 9 4 30 1 20 31 30 27 30 23 MIN. QFF PRESSURE IN HPA 991.7 991.3 988.0 984.8 982.3 979.6 975.7 976.4 981.5 988.2 988.7 995.8 975.7 DAY 23 17 20 20 7 25 28 24 2 3 19 20 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1953 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 813.4 813.2 811.3 813.5 813.4 812.4 811.7 812.0 814.6 817.1 814.3 814.4 813.4 MAX. QFE PRESSURE IN HPA 815.6 815.5 819.5 816.0 815.9 814.5 816.1 816.9 819.0 822.4 818.3 819.2 822.4 DAY 18 14 9 5 24 10 18 30 30 11 14 5 MIN. QFE PRESSURE IN HPA 810.6 811.3 806.5 808.2 808.6 810.4 807.4 809.1 812.7 811.7 808.6 809.2 806.5 DAY 16 19 13 20 7 24 28 4 9 30 19 21 MEAN QNH PRESSURE IN HPA 996.8 996.6 994.3 996.9 996.9 995.6 994.8 995.2 998.2 1001.3 997.9 998.0 996.9 MAX. QNH PRESSURE IN HPA 999.4 999.3 1004.0 999.9 999.8 998.1 1000.0 1001.0 1003.5 1007.5 1002.6 1003.7 1007.5 DAY 18 14 9 5 24 10 18 30 30 11 14 5 MIN. QNH PRESSURE IN HPA 993.5 994.4 988.7 990.7 991.2 993.3 989.8 991.8 996.0 994.8 991.2 991.9 988.7 DAY 16 19 13 20 7 24 28 4 9 30 19 21 MEAN QFF PRESSURE IN HPA 997.6 997.1 994.5 991.8 988.8 984.2 980.7 981.4 986.9 995.3 997.8 1003.2 991.6 MAX. QFF PRESSURE IN HPA 1002.5 1001.8 1006.5 997.2 991.7 989.0 985.2 986.8 994.2 1006.7 1003.6 1009.1 1009.1 DAY 18 26 9 1 24 1 18 31 30 26 14 24 MIN. QFF PRESSURE IN HPA 992.6 992.7 986.0 985.3 983.5 980.2 975.8 977.5 982.0 989.6 989.7 997.1 975.8 DAY 22 17 12 20 7 29 28 24 9 3 19 27 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 813.5 813.3 811.5 814.0 814.0 812.9 812.1 812.5 815.5 817.8 814.8 814.6 813.9 MAX. QFE PRESSURE IN HPA 815.6 815.8 818.2 817.2 816.2 815.2 816.3 817.2 820.1 822.6 819.5 819.3 822.6 DAY 18 14 10 5 24 5 18 31 30 11 14 5 MIN. QFE PRESSURE IN HPA 810.2 810.4 806.5 809.2 809.6 810.7 809.1 809.9 813.3 812.1 808.5 809.6 806.5 DAY 16 17 13 20 7 24 28 24 2 30 19 21 MEAN QNH PRESSURE IN HPA 996.9 996.7 994.6 997.6 997.6 996.3 995.4 995.8 999.3 1002.1 998.5 998.3 997.4 MAX. QNH PRESSURE IN HPA 999.4 999.7 1002.5 1001.3 1000.2 999.0 1000.3 1001.3 1004.7 1007.7 1004.0 1003.8 1007.7 DAY 18 14 10 5 24 5 18 31 30 11 14 5 MIN. QNH PRESSURE IN HPA 993.1 993.3 988.7 991.9 992.4 993.7 991.8 992.7 996.7 995.3 991.1 992.4 988.7 DAY 16 17 13 20 7 24 28 24 2 30 19 21 MEAN QFF PRESSURE IN HPA 997.6 997.1 994.5 991.8 988.7 983.7 980.4 981.3 987.2 995.4 997.9 1003.0 991.6 MAX. QFF PRESSURE IN HPA 1003.2 1001.9 1003.6 997.4 991.4 988.2 984.9 985.8 992.9 1005.7 1003.9 1012.8 1012.8 DAY 18 13 9 5 27 1 20 30 30 26 14 23 MIN. QFF PRESSURE IN HPA 991.8 990.1 985.9 985.7 985.8 979.3 976.5 978.3 982.0 989.8 989.7 994.9 976.5 DAY 23 17 12 20 7 24 11 4 2 22 19 27 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 813.5 813.4 811.5 814.1 814.0 813.4 812.5 812.7 815.8 818.0 814.6 814.7 814.0 MAX. QFE PRESSURE IN HPA 815.5 816.0 818.3 816.7 815.7 815.1 816.5 817.0 820.2 822.3 818.9 819.3 822.3 DAY 18 14 10 5 22 5 18 31 30 11 13 1 MIN. QFE PRESSURE IN HPA 811.3 811.2 806.4 809.4 809.8 811.2 810.2 810.2 813.9 811.9 808.7 809.8 806.4 DAY 16 23 13 20 7 14 5 23 2 30 19 20 MEAN QNH PRESSURE IN HPA 997.0 996.8 994.6 997.7 997.6 996.8 995.8 996.0 999.7 1002.3 998.3 998.4 997.6 MAX. QNH PRESSURE IN HPA 999.3 999.9 1002.6 1000.7 999.6 998.9 1000.5 1001.1 1004.9 1007.3 1003.3 1003.8 1007.3 DAY 18 14 10 5 22 5 18 31 30 11 13 1 MIN. QNH PRESSURE IN HPA 994.4 994.3 988.6 992.1 992.6 994.3 993.1 993.1 997.4 995.1 991.3 992.6 988.6 DAY 16 23 13 20 7 14 5 23 2 30 19 20 MEAN QFF PRESSURE IN HPA 996.9 996.4 994.0 991.2 988.2 984.1 980.4 980.7 986.3 994.4 996.8 1002.3 991.0 MAX. QFF PRESSURE IN HPA 1002.3 1000.9 1002.9 996.7 991.1 988.0 984.0 984.6 992.8 1006.2 1001.6 1012.8 1012.8 DAY 18 25 9 5 27 10 18 31 30 25 30 23 MIN. QFF PRESSURE IN HPA 992.2 991.5 986.9 984.5 984.7 979.4 976.3 977.5 981.6 988.3 989.4 994.1 976.3 DAY 23 17 12 20 7 25 11 23 2 3 19 27 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1954 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.6 1.3 4.6 10.0 16.0 20.7 22.7 22.5 18.6 12.5 5.3 1.4 11.3 MINIMUN AIR TEMPERATURE (C) ***** ***** ***** 6.3 8.1 12.3 14.0 13.1 10.1 4.8 1.3 -2.4 ***** DAYS WITH MINIMUM TEMP. >=21 **** **** **** 0 0 0 0 0 0 0 0 0 **** DAYS WITH MINIMUM TEMP. <=-4 **** **** **** 0 0 0 0 0 0 0 1 11 **** DAYS WITH FREEZING MIN.<= 0 **** **** **** 0 0 0 0 0 0 0 11 28 **** TEMPERATURE RECORDS LOWEST(C) ***** ***** ***** 1.0 4.0 10.0 10.0 11.0 7.0 3.0 -4.0 -6.0 ***** DAY ** ** ** 1 16 20 1 6 28 14 29 17 MAXIMUM AIR TEMPERATURE (C) 5.7 6.8 10.5 15.4 23.4 28.9 31.4 31.3 27.4 20.5 10.7 6.5 18.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 13 23 31 8 0 0 0 75 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 12.0 10.0 19.0 22.0 29.0 32.0 36.0 34.0 32.0 26.0 18.0 15.0 36.0 DAY 2 19 31 25 31 28 18 11 1 3 1 28 DIF. BETWEEN (MAX.-MIN.) (C) ***** ***** ***** 9.1 15.3 16.6 17.4 18.2 17.3 15.7 9.4 8.9 ***** MEAN DAILY TEMP. (MDT) (C) ***** ***** ***** 10.8 15.7 20.6 22.7 22.2 18.7 12.6 6.0 2.0 ***** COOLING DEG. DAYS(BASE 21 0C) 0.0 ****** 0.0 0.0 0.0 10.5 58.0 38.5 4.5 0.0 0.0 0.0 ****** HEATING DEG. DAYS(BASE 18 0C) 27.0 ****** 17.5 98.5 76.5 0.0 0.0 0.0 17.5 167.0 359.5 494.5 ****** DEWPOINT (MEAN C) -3.8 -3.1 -2.0 ***** 3.7 6.3 8.2 7.1 4.9 2.3 1.1 -1.2 ***** MIXING RATIO (G/KG) 3.64 3.82 4.17 ****** 6.32 7.51 8.57 7.94 6.81 5.61 5.15 4.35 ****** VAPOUR PRESSURE (HPA) 4.72 4.95 5.41 ****** 8.15 9.63 10.96 10.19 8.78 7.28 6.68 5.64 ****** SATURATION DEF. (HPA) 1.85 1.93 3.24 ****** 10.95 15.90 17.98 18.36 13.90 7.97 2.53 1.32 ****** RELATIVE HUMIDITY (MEAN %) 74 75 67 *** 47 41 42 40 44 53 77 84 *** RELATIVE HUMIDITY (MAX. %) 90 92 85 *** 71 61 60 58 63 76 90 96 *** RELATIVE HUMIDITY (MIN. %) 54 53 46 *** 28 25 25 22 23 33 57 68 *** RELATIVE HUMIDITY (MEAN% 03UTC) 82 88 81 *** 65 56 58 56 60 72 86 92 *** RELATIVE HUMIDITY (MEAN% 09UTC) 71 67 58 *** 32 29 30 25 26 36 64 77 *** RELATIVE HUMIDITY (MEAN% 15UTC) 69 67 63 *** 35 32 32 30 37 42 77 83 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 35.1 73.0 82.0 85.3 14.0 4.0 0.0 2.0 0.0 4.0 23.8 37.6 360.8 DAYS WITH PRECIPITATION >=10 2 5 2 2 0 0 0 0 0 0 0 1 12 DAYS WITH PRECIPITATION >= 5 3 5 5 7 1 0 0 0 0 0 1 4 26 DAYS WITH PRECIPITATION >= 1 5 10 7 13 5 1 0 1 0 1 7 8 58 DAYS WITH PRECIPITATION 9 12 9 16 5 2 0 2 1 1 12 10 79 GREATEST DAILY PRECIPITATION 12.0 14.0 30.0 29.0 6.0 4.0 0.0 2.0 0.0 4.0 6.0 11.0 30.0 DAY 3 15 14 11 3 6 ** 17 ** 26 19 6 DAY WITH THUNDER STORM 0 4 0 4 3 2 0 1 0 1 0 0 15 DAYS WITH SNOW OR SLEET 5 9 2 0 0 0 0 0 0 0 3 6 25 DAYS WITH DUST 2 0 1 0 0 0 0 1 0 0 0 0 4 WIND DIRECTION (PREVAILING) 225 225 270 270 225 225 270 225 225 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 15.8 15.3 4.1 7.2 6.3 5.0 3.2 4.3 4.6 5.2 3.0 5.5 7.6 PREVAILING WIND PERCENT 57.7 33.5 35.4 35.4 40.3 37.1 41.9 30.6 35.8 40.8 26.8 29.4 35.8 CALMS PERCENT OF WIND 3.6 13.4 15.4 10.0 2.4 6.7 9.7 9.7 5.8 2.5 19.6 30.2 10.7 NO. OF WIND OBSERVATION 248 224 246 240 248 240 248 248 240 238 235 248 2903 VECTOR WIND DIRECTION (MEAN) 236 239 243 238 244 225 242 222 216 232 221 231 235 VECTOR WIND MAGNITUDE(KNOTS) 10.9 7.4 3.6 6.1 4.6 2.9 2.2 2.2 2.6 3.0 1.3 2.2 4.0 WIND STEADINESES (MEAN %) 88.6 85.1 81.8 80.3 82.1 72.5 75.9 56.4 55.3 75.0 50.0 78.6 75.5 WIND SPEED (MEAN KNOTS) 12.3 8.7 4.4 7.6 5.6 4.0 2.9 3.9 4.7 4.0 2.6 2.8 5.3 FASTEST WIND DIRECTION 230 230 230 230 270 230 270 180 180 270 230 270 230 FASTEST WIND SPEED (KNOTS) 40 38 35 30 30 20 18 20 20 24 15 20 40 DAY 8 10 27 7 13 12 30 3 15 19 10 7 DAYS WITH SKY CLEAR (0-2)/8 13 7 9 4 21 27 27 22 27 23 7 9 196 DAYS WITH P.CLOUDY (3-6)/8 14 15 12 17 10 3 4 9 3 5 12 11 115 DAYS WITH CLOUDY (7-8)/8 4 6 10 9 0 0 0 0 0 3 11 10 53 DAYS WITH VISIBILITY =< 2 KM 4 8 3 0 0 1 0 0 0 0 4 8 28 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1954 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 810.6 810.1 813.7 ****** 810.2 807.5 807.0 809.1 810.6 814.0 813.3 812.2 ****** MAX. QFE PRESSURE IN HPA 819.7 820.0 820.2 ****** 815.9 812.2 811.6 815.1 815.4 819.6 818.9 823.2 ****** DAY-HOUR 17-18 22- 6 2- 9 **-** 1- 6 19- 6 31- 6 31- 9 23- 6 11- 6 5- 6 16- 6 MIN. QFE PRESSURE IN HPA 801.0 801.0 802.9 ****** 805.0 802.0 801.9 802.2 804.1 808.8 808.8 802.3 ****** DAY-HOUR 4-21 8-12 24-15 **-** 27-12 9-12 28-15 10-15 16-15 2-21 28- 0 31- 0 MEAN QNH PRESSURE IN HPA 993.5 993.0 997.2 ****** 993.1 989.9 989.3 991.8 993.6 997.6 996.7 995.4 ****** MAX. QNH PRESSURE IN HPA 1004.3 1004.6 1004.9 ****** 999.8 995.4 994.7 998.9 999.2 1004.2 1003.3 1008.4 ****** DAY-HOUR 17-18 22- 6 2- 9 **-** 1- 6 19- 6 31- 6 31- 9 23- 6 11- 6 5- 6 16- 6 MIN. QNH PRESSURE IN HPA 982.2 982.2 984.5 ****** 986.9 983.4 983.3 983.6 985.9 991.4 991.4 983.8 ****** DAY-HOUR 4-21 8-12 24-15 **-** 27-12 9-12 28-15 10-15 16-15 2-21 28- 0 31- 0 MEAN QFF PRESSURE IN HPA 994.9 993.9 996.2 ****** 983.6 977.2 975.2 977.9 982.3 990.4 994.6 996.2 ****** MAX. QFF PRESSURE IN HPA 1007.1 1005.3 1009.1 ****** 991.0 984.8 980.5 985.8 990.3 997.2 1001.6 1011.6 ****** DAY-HOUR 17-18 22- 6 2-15 **-** 1- 6 20- 3 31- 6 31- 6 23- 6 13- 3 29- 3 16- 6 MIN. QFF PRESSURE IN HPA 982.6 982.1 979.7 ****** 974.8 970.0 968.4 968.8 974.2 979.6 989.0 982.5 ****** DAY-HOUR 9- 0 8-21 24-12 **-** 27-12 9-12 28-12 11-12 16-12 2-21 1-12 30-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 810.3 810.0 813.8 ****** 810.3 807.9 807.3 809.2 810.9 814.1 813.5 812.2 ****** MAX. QFE PRESSURE IN HPA 815.4 818.7 819.1 ****** 814.6 812.1 809.5 813.5 814.3 818.3 818.3 821.0 ****** DAY 17 22 3 ** 31 3 15 31 23 13 6 16 MIN. QFE PRESSURE IN HPA 802.2 801.7 806.2 ****** 806.2 804.4 805.0 804.7 807.7 809.4 808.8 802.3 ****** DAY 9 9 25 ** 13 10 22 11 17 3 28 31 MEAN QNH PRESSURE IN HPA 993.2 992.8 997.3 ****** 993.1 990.4 989.7 991.9 993.9 997.7 996.9 995.4 ****** MAX. QNH PRESSURE IN HPA 999.2 1003.1 1003.6 ****** 998.3 995.3 992.2 997.0 997.9 1002.6 1002.6 1005.8 ****** DAY 17 22 3 ** 31 3 15 31 23 13 6 16 MIN. QNH PRESSURE IN HPA 983.6 983.0 988.4 ****** 988.4 986.2 986.9 986.6 990.1 992.1 991.4 983.8 ****** DAY 9 9 25 ** 13 10 22 11 17 3 28 31 MEAN QFF PRESSURE IN HPA 993.9 993.0 995.9 ****** 983.7 977.5 975.3 977.6 982.1 990.1 994.1 995.7 ****** MAX. QFF PRESSURE IN HPA 1000.0 1003.0 1007.1 ****** 988.2 983.0 978.9 982.1 988.5 996.6 999.7 1006.7 ****** DAY 15 22 3 ** 1 20 15 31 22 24 29 16 MIN. QFF PRESSURE IN HPA 982.6 984.6 983.8 ****** 976.5 972.7 970.8 971.5 978.1 981.8 989.0 983.5 ****** DAY 9 9 25 ** 27 10 22 11 11 3 1 31 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 810.6 810.1 813.7 ****** 810.5 808.1 807.6 809.7 811.2 814.3 813.7 812.1 ****** MAX. QFE PRESSURE IN HPA 815.1 819.2 819.1 ****** 814.1 811.8 810.0 814.3 814.6 818.5 818.0 821.7 ****** DAY 17 22 23 ** 25 1 20 31 23 13 5 16 MIN. QFE PRESSURE IN HPA 805.0 802.0 806.6 ****** 805.8 804.9 805.1 805.0 807.0 809.6 809.3 803.4 ****** DAY 22 9 25 ** 13 10 22 10 17 3 28 31 MEAN QNH PRESSURE IN HPA 993.5 992.9 997.2 ****** 993.4 990.6 990.0 992.5 994.2 997.9 997.2 995.3 ****** MAX. QNH PRESSURE IN HPA 998.9 1003.7 1003.6 ****** 997.7 995.0 992.8 997.9 998.3 1002.9 1002.3 1006.6 ****** DAY 17 22 23 ** 25 1 20 31 23 13 5 16 MIN. QNH PRESSURE IN HPA 986.9 983.4 988.8 ****** 987.9 986.8 987.1 986.9 989.3 992.4 992.0 985.1 ****** DAY 22 9 25 ** 13 10 22 10 17 3 28 31 MEAN QFF PRESSURE IN HPA 995.9 994.6 997.0 ****** 984.9 978.6 976.7 979.7 984.0 992.2 996.3 996.9 ****** MAX. QFF PRESSURE IN HPA 1003.0 1004.5 1009.1 ****** 990.3 984.8 979.8 984.5 990.0 997.2 1001.6 1009.9 ****** DAY 16 22 3 ** 1 20 15 31 23 13 29 16 MIN. QFF PRESSURE IN HPA 986.6 986.2 986.0 ****** 977.7 974.9 972.4 974.0 979.5 983.4 992.8 985.8 ****** DAY 11 16 25 ** 27 10 22 10 17 3 22 31 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1954 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 811.3 810.8 814.2 ****** 811.0 808.4 807.9 810.2 811.6 814.9 813.9 812.7 ****** MAX. QFE PRESSURE IN HPA 816.3 820.0 820.0 ****** 815.9 812.2 811.6 814.9 815.4 819.6 818.9 823.2 ****** DAY 16 22 2 ** 1 19 31 31 23 11 5 16 MIN. QFE PRESSURE IN HPA 804.6 803.4 808.0 ****** 806.0 804.9 805.4 805.1 807.4 810.4 809.5 804.9 ****** DAY 11 16 14 ** 13 9 27 10 16 3 24 30 MEAN QNH PRESSURE IN HPA 994.4 993.8 997.8 ****** 994.0 991.0 990.3 993.1 994.8 998.6 997.5 996.1 ****** MAX. QNH PRESSURE IN HPA 1000.3 1004.6 1004.6 ****** 999.8 995.4 994.7 998.6 999.2 1004.2 1003.3 1008.4 ****** DAY 16 22 2 ** 1 19 31 31 23 11 5 16 MIN. QNH PRESSURE IN HPA 986.5 985.1 990.5 ****** 988.1 986.8 987.4 987.1 989.8 993.3 992.2 986.8 ****** DAY 11 16 14 ** 13 9 27 10 16 3 24 30 MEAN QFF PRESSURE IN HPA 995.9 994.9 996.9 ****** 984.2 978.2 976.3 979.6 984.0 991.8 995.6 997.2 ****** MAX. QFF PRESSURE IN HPA 1004.0 1005.3 1008.1 ****** 991.0 984.1 980.5 985.8 990.3 996.9 1000.2 1011.6 ****** DAY 16 22 2 ** 1 20 31 31 23 13 29 16 MIN. QFF PRESSURE IN HPA 984.7 987.3 986.2 ****** 977.4 974.2 972.2 972.9 978.9 984.4 991.5 985.1 ****** DAY 11 8 24 ** 27 14 28 11 16 3 1 30 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 811.0 810.6 814.3 ****** 810.7 807.7 807.3 809.6 810.9 814.4 813.6 812.4 ****** MAX. QFE PRESSURE IN HPA 816.4 819.6 820.2 ****** 815.5 811.5 810.9 815.1 814.1 819.0 818.3 822.1 ****** DAY 24 22 2 ** 24 3 31 31 23 11 5 16 MIN. QFE PRESSURE IN HPA 804.1 803.0 807.9 ****** 806.7 803.4 804.3 804.2 805.9 811.1 809.2 803.4 ****** DAY 11 16 14 ** 7 9 28 11 16 3 24 30 MEAN QNH PRESSURE IN HPA 994.1 993.6 997.9 ****** 993.6 990.1 989.7 992.3 993.9 998.0 997.0 995.7 ****** MAX. QNH PRESSURE IN HPA 1000.4 1004.2 1004.9 ****** 999.3 994.6 993.9 998.9 997.7 1003.5 1002.6 1007.1 ****** DAY 24 22 2 ** 24 3 31 31 23 11 5 16 MIN. QNH PRESSURE IN HPA 985.9 984.6 990.4 ****** 988.9 985.1 986.1 986.0 988.0 994.1 991.9 985.1 ****** DAY 11 16 14 ** 7 9 28 11 16 3 24 30 MEAN QFF PRESSURE IN HPA 995.1 994.0 996.6 ****** 983.6 976.8 974.8 977.6 981.6 989.8 994.2 996.1 ****** MAX. QFF PRESSURE IN HPA 1001.2 1004.1 1006.8 ****** 988.6 982.4 978.5 984.2 987.2 994.2 998.9 1010.5 ****** DAY 24 22 3 ** 24 20 31 31 23 13 29 16 MIN. QFF PRESSURE IN HPA 983.8 985.4 987.4 ****** 977.0 971.0 969.6 970.2 975.7 983.1 989.5 983.3 ****** DAY 11 8 24 ** 27 9 28 11 16 3 1 30 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 810.1 809.7 813.3 ****** 809.5 806.8 806.3 808.3 809.7 813.4 812.6 811.6 ****** MAX. QFE PRESSURE IN HPA 815.7 818.7 819.7 ****** 814.5 810.6 809.8 813.2 813.0 818.9 817.4 820.0 ****** DAY 17 22 2 ** 24 3 31 31 23 25 5 16 MIN. QFE PRESSURE IN HPA 804.1 801.0 803.9 ****** 805.0 802.0 802.9 802.7 804.2 809.9 809.0 803.1 ****** DAY 11 8 24 ** 27 9 28 10 16 3 23 30 MEAN QNH PRESSURE IN HPA 992.9 992.5 996.7 ****** 992.2 989.0 988.5 990.9 992.5 996.8 995.9 994.7 ****** MAX. QNH PRESSURE IN HPA 999.6 1003.1 1004.3 ****** 998.1 993.5 992.6 996.6 996.4 1003.3 1001.6 1004.6 ****** DAY 17 22 2 ** 24 3 31 31 23 25 5 16 MIN. QNH PRESSURE IN HPA 985.9 982.2 985.6 ****** 986.9 983.4 984.5 984.2 986.0 992.7 991.7 984.7 ****** DAY 11 8 24 ** 27 9 28 10 16 3 23 30 MEAN QFF PRESSURE IN HPA 993.6 992.7 995.2 ****** 982.7 976.0 974.1 976.5 980.8 989.3 993.2 994.9 ****** MAX. QFF PRESSURE IN HPA 1000.1 1002.9 1007.5 ****** 988.3 981.3 978.6 982.1 986.1 996.9 998.6 1007.8 ****** DAY 17 22 2 ** 1 3 2 31 22 25 29 16 MIN. QFF PRESSURE IN HPA 983.9 982.4 979.7 ****** 974.8 970.0 968.4 968.8 974.2 983.2 989.0 983.9 ****** DAY 11 8 24 ** 27 9 28 11 16 3 1 30 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1954 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 810.2 809.7 813.1 ****** 809.4 806.3 805.7 807.7 809.6 813.4 812.5 811.8 ****** MAX. QFE PRESSURE IN HPA 814.7 817.8 819.8 ****** 814.1 810.5 808.3 812.6 812.7 817.5 815.9 820.1 ****** DAY 15 22 2 ** 1 3 31 31 22 12 6 15 MIN. QFE PRESSURE IN HPA 803.3 801.1 802.9 ****** 805.7 802.3 801.9 802.2 804.1 809.8 809.1 803.1 ****** DAY 11 8 24 ** 27 9 28 10 16 2 23 30 MEAN QNH PRESSURE IN HPA 993.0 992.5 996.5 ****** 992.2 988.5 987.8 990.2 992.3 996.8 995.8 995.0 ****** MAX. QNH PRESSURE IN HPA 998.4 1002.0 1004.4 ****** 997.7 993.4 990.8 995.9 996.0 1001.7 999.8 1004.7 ****** DAY 15 22 2 ** 1 3 31 31 22 12 6 15 MIN. QNH PRESSURE IN HPA 984.9 982.3 984.5 ****** 987.8 983.8 983.3 983.6 985.9 992.6 991.8 984.7 ****** DAY 11 8 24 ** 27 9 28 10 16 2 23 30 MEAN QFF PRESSURE IN HPA 995.3 994.1 996.2 ****** 983.5 976.5 974.4 977.3 982.0 990.6 995.0 996.4 ****** MAX. QFF PRESSURE IN HPA 1002.5 1002.8 1009.1 ****** 990.0 982.9 977.8 982.9 987.8 995.8 1000.0 1008.4 ****** DAY 15 22 2 ** 1 19 3 31 23 12 29 16 MIN. QFF PRESSURE IN HPA 983.1 984.5 980.4 ****** 977.0 971.3 968.5 970.4 975.1 984.5 991.2 985.1 ****** DAY 11 8 24 ** 27 9 28 10 16 3 22 30 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 810.9 810.2 813.7 ****** 810.3 807.5 806.8 808.8 810.5 814.0 813.3 812.3 ****** MAX. QFE PRESSURE IN HPA 819.7 817.7 819.8 ****** 814.9 811.3 810.6 813.0 814.2 818.3 818.3 821.1 ****** DAY 17 21 2 ** 24 3 31 30 22 11 5 15 MIN. QFE PRESSURE IN HPA 804.0 801.0 805.1 ****** 806.1 803.1 803.8 802.8 805.4 809.9 809.2 802.6 ****** DAY 21 8 24 ** 27 9 27 10 16 2 27 30 MEAN QNH PRESSURE IN HPA 993.9 993.0 997.2 ****** 993.2 989.9 989.0 991.4 993.4 997.6 996.8 995.5 ****** MAX. QNH PRESSURE IN HPA 1004.3 1001.9 1004.4 ****** 998.6 994.4 993.5 996.4 997.8 1002.6 1002.6 1005.9 ****** DAY 17 21 2 ** 24 3 31 30 22 11 5 15 MIN. QNH PRESSURE IN HPA 985.8 982.2 987.1 ****** 988.2 984.7 985.5 984.3 987.4 992.7 991.9 984.1 ****** DAY 21 8 24 ** 27 9 27 10 16 2 27 30 MEAN QFF PRESSURE IN HPA 995.4 994.2 996.2 ****** 983.4 977.1 975.0 977.9 982.7 990.8 995.0 996.6 ****** MAX. QFF PRESSURE IN HPA 1007.1 1001.8 1008.1 ****** 988.9 982.2 980.5 983.0 988.5 996.3 999.5 1009.4 ****** DAY 17 22 2 ** 1 19 31 31 22 12 29 16 MIN. QFF PRESSURE IN HPA 984.4 983.1 983.0 ****** 975.9 971.7 970.3 970.0 976.7 982.6 991.4 983.1 ****** DAY 11 8 24 ** 27 9 27 10 16 2 3 30 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 810.3 810.2 813.8 ****** 810.3 807.8 807.2 809.3 810.8 814.0 813.4 812.3 ****** MAX. QFE PRESSURE IN HPA 815.1 818.0 819.9 ****** 814.7 811.5 811.5 813.9 813.9 818.2 818.4 821.2 ****** DAY 16 21 2 ** 24 2 31 31 22 11 5 15 MIN. QFE PRESSURE IN HPA 801.0 801.3 805.7 ****** 806.1 804.6 804.2 803.8 806.1 808.8 809.0 802.5 ****** DAY 4 8 24 ** 12 9 9 10 16 2 27 30 MEAN QNH PRESSURE IN HPA 993.2 993.0 997.3 ****** 993.2 990.2 989.5 992.0 993.7 997.5 996.8 995.5 ****** MAX. QNH PRESSURE IN HPA 998.9 1002.3 1004.5 ****** 998.4 994.6 994.6 997.4 997.4 1002.5 1002.7 1006.0 ****** DAY 16 21 2 ** 24 2 31 31 22 11 5 15 MIN. QNH PRESSURE IN HPA 982.2 982.6 987.8 ****** 988.2 986.5 986.0 985.5 988.2 991.4 991.7 984.0 ****** DAY 4 8 24 ** 12 9 9 10 16 2 27 30 MEAN QFF PRESSURE IN HPA 994.2 993.5 995.8 ****** 983.1 977.0 974.8 977.2 981.4 989.4 994.1 995.9 ****** MAX. QFF PRESSURE IN HPA 1001.7 1002.6 1007.0 ****** 987.9 982.1 980.2 982.7 987.3 995.3 999.3 1007.4 ****** DAY 15 21 2 ** 9 20 31 31 21 23 28 16 MIN. QFF PRESSURE IN HPA 983.2 982.1 981.8 ****** 976.9 972.1 970.8 969.9 975.9 979.6 989.6 982.5 ****** DAY 11 8 24 ** 27 9 27 10 16 2 2 30 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1955 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.6 2.9 5.3 11.2 14.1 20.0 24.2 24.6 20.0 12.5 7.1 1.6 11.9 MINIMUN AIR TEMPERATURE (C) -4.7 -2.1 0.9 5.1 7.6 12.0 15.8 16.1 11.9 5.3 2.2 -2.1 5.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 23 9 4 0 0 0 0 0 0 0 0 8 44 DAYS WITH FREEZING MIN.<= 0 30 20 11 3 0 0 0 0 0 0 5 27 96 TEMPERATURE RECORDS LOWEST(C) -8.0 -10.0 -5.0 -2.0 2.0 7.0 14.0 14.0 5.0 2.0 -2.0 -5.0 -10.0 DAY 9 3 8 12 9 11 1 18 30 14 26 8 MAXIMUM AIR TEMPERATURE (C) 5.0 8.5 11.0 18.2 21.0 28.4 32.4 32.6 27.7 20.2 13.4 6.7 18.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 12 30 29 7 0 0 0 78 DAYS WITH MAXIMUM TEMP. <= 0 1 0 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS HIGHEST(C) 10.0 18.0 18.0 23.0 28.0 33.0 35.0 37.0 31.0 26.0 18.0 13.0 37.0 DAY 13 28 1 3 29 27 18 10 4 3 1 22 DIF. BETWEEN (MAX.-MIN.) (C) 9.7 10.6 10.1 13.1 13.4 16.4 16.6 16.5 15.8 14.9 11.2 8.8 13.1 MEAN DAILY TEMP. (MDT) (C) 0.1 3.2 6.0 11.6 14.3 20.2 24.1 24.4 19.8 12.7 7.8 2.3 12.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 25.0 96.0 104.0 8.5 0.0 0.0 0.0 233.5 HEATING DEG. DAYS(BASE 18 0C) 553.5 414.5 373.5 190.5 118.5 10.5 0.0 0.0 10.0 163.0 305.5 487.0 2626.5 DEWPOINT (MEAN C) -3.6 -4.1 -1.9 -0.1 3.7 5.9 7.2 6.1 4.3 0.8 -0.1 -2.5 1.3 MIXING RATIO (G/KG) 3.69 3.54 4.19 4.84 6.35 7.30 8.09 7.51 6.52 5.15 4.79 3.99 5.50 VAPOUR PRESSURE (HPA) 4.78 4.58 5.40 6.26 8.19 9.39 10.35 9.62 8.40 6.68 6.19 5.16 7.08 SATURATION DEF. (HPA) 1.27 3.40 3.87 7.84 8.80 15.46 21.33 22.88 16.23 8.54 4.23 1.86 9.64 RELATIVE HUMIDITY (MEAN %) 82 65 64 50 53 43 36 32 38 48 63 76 54 RELATIVE HUMIDITY (MAX. %) 95 85 85 76 77 63 52 48 55 71 83 90 73 RELATIVE HUMIDITY (MIN. %) 59 43 42 28 31 25 22 20 24 30 41 56 35 RELATIVE HUMIDITY (MEAN% 03UTC) 91 80 78 70 71 62 50 45 54 67 72 83 69 RELATIVE HUMIDITY (MEAN% 09UTC) 76 54 52 39 40 31 27 24 28 34 51 66 44 RELATIVE HUMIDITY (MEAN% 15UTC) 77 58 56 42 45 32 26 24 28 39 57 73 46 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 12.0 9.0 68.1 74.1 50.0 0.0 0.0 0.0 0.0 2.0 40.0 47.7 302.9 DAYS WITH PRECIPITATION >=10 0 0 2 3 2 0 0 0 0 0 1 2 10 DAYS WITH PRECIPITATION >= 5 1 0 6 6 4 0 0 0 0 0 3 4 24 DAYS WITH PRECIPITATION >= 1 3 3 15 7 9 0 0 0 0 2 8 8 55 DAYS WITH PRECIPITATION 4 4 17 11 12 0 0 0 0 2 9 10 69 GREATEST DAILY PRECIPITATION 5.0 4.0 18.0 21.0 14.0 0.0 0.0 0.0 0.0 1.0 10.0 14.0 21.0 DAY 27 1 12 29 3 ** ** ** ** 11 8 29 DAY WITH THUNDER STORM 0 0 0 0 1 2 0 0 0 0 0 0 3 DAYS WITH SNOW OR SLEET 3 6 6 1 0 0 0 0 0 0 0 8 24 DAYS WITH DUST 1 0 0 0 0 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 225 225 225 225 270 225 225 225 270 225 270 225 225 PREVAILING WIND SPEED(KNOTS) 4.4 12.3 10.5 8.0 5.0 4.9 4.0 5.1 6.1 3.0 8.4 5.7 6.5 PREVAILING WIND PERCENT 21.4 28.6 29.4 38.8 39.9 36.7 31.6 32.0 25.7 30.4 34.6 25.4 29.7 CALMS PERCENT OF WIND 27.4 16.1 23.4 5.4 6.9 15.0 11.7 10.2 13.9 11.7 10.0 23.4 14.6 NO. OF WIND OBSERVATION 248 224 248 240 248 240 247 244 237 247 240 248 2911 VECTOR WIND DIRECTION (MEAN) 223 220 230 233 246 242 239 226 228 227 241 247 233 VECTOR WIND MAGNITUDE(KNOTS) 1.6 6.0 5.6 5.6 3.1 2.8 2.3 2.8 2.9 1.8 5.7 3.5 3.6 WIND STEADINESES (MEAN %) 66.7 82.2 81.2 81.2 72.1 82.4 74.2 57.1 59.2 58.1 78.1 76.1 73.5 WIND SPEED (MEAN KNOTS) 2.4 7.3 6.9 6.9 4.3 3.4 3.1 4.9 4.9 3.1 7.3 4.6 4.9 FASTEST WIND DIRECTION 220 210 210 220 230 230 230 230 230 200 270 270 210 FASTEST WIND SPEED (KNOTS) 35 55 45 30 30 25 25 35 35 22 40 35 55 DAY 11 11 3 9 20 3 29 15 25 29 24 19 DAYS WITH SKY CLEAR (0-2)/8 14 12 6 15 15 26 31 27 30 25 13 13 227 DAYS WITH P.CLOUDY (3-6)/8 9 12 12 11 12 4 0 4 0 6 13 9 92 DAYS WITH CLOUDY (7-8)/8 8 4 13 4 4 0 0 0 0 0 4 9 46 DAYS WITH VISIBILITY =< 2 KM 5 4 8 1 1 0 0 1 2 0 0 9 31 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1955 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 811.7 809.1 807.1 810.2 810.6 808.8 806.3 807.3 810.3 813.4 811.8 809.2 809.6 MAX. QFE PRESSURE IN HPA 818.1 815.0 830.3 818.4 816.1 814.0 811.5 811.2 816.8 819.2 817.9 817.5 830.3 DAY-HOUR 9- 6 8- 6 2- 6 2- 0 8-18 6- 6 10- 6 23- 6 22- 3 18- 6 16- 6 2- 9 MIN. QFE PRESSURE IN HPA 802.5 798.9 798.9 800.2 804.0 803.7 801.1 802.1 804.5 809.1 802.3 801.4 798.9 DAY-HOUR 31-21 23- 0 3-21 10- 0 3- 0 29-12 28-15 7-15 1-15 31-15 24-18 29- 0 MEAN QNH PRESSURE IN HPA 994.8 991.7 989.4 993.1 993.6 991.4 988.5 989.7 993.2 996.9 994.9 991.9 992.4 MAX. QNH PRESSURE IN HPA 1002.4 998.7 1016.8 1002.7 1000.0 997.6 994.6 994.3 1000.9 1003.7 1002.2 1001.7 1016.8 DAY-HOUR 9- 6 8- 6 2- 6 2- 0 8-18 6- 6 10- 6 23- 6 22- 3 18- 6 16- 6 2- 9 MIN. QNH PRESSURE IN HPA 984.0 979.7 979.7 981.3 985.8 985.4 982.3 983.5 986.4 991.8 983.8 982.7 979.7 DAY-HOUR 31-21 23- 0 3-21 10- 0 3- 0 29-12 28-15 7-15 1-15 31-15 24-18 29- 0 MEAN QFF PRESSURE IN HPA 997.0 991.5 987.3 986.9 985.3 979.2 973.5 974.4 981.0 989.9 991.5 992.4 985.8 MAX. QFF PRESSURE IN HPA 1007.7 1000.4 1012.9 995.7 996.8 986.6 981.6 980.3 990.7 997.3 1000.8 1000.8 1012.9 DAY-HOUR 9- 6 8- 6 2- 6 2- 0 8-21 6- 6 9- 6 31- 3 22- 9 15- 6 16- 6 2- 9 MIN. QFF PRESSURE IN HPA 986.8 975.9 973.7 976.2 977.4 970.4 967.2 967.2 972.5 983.0 980.0 983.5 967.2 DAY-HOUR 26-12 23- 0 3-21 10- 0 21-18 29-12 20-12 6-12 10-12 6-12 24-18 29- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 811.8 809.0 807.1 810.4 810.6 809.2 806.9 807.8 810.6 813.6 811.8 809.4 809.9 MAX. QFE PRESSURE IN HPA 816.7 813.3 812.6 818.4 814.9 812.0 810.4 810.3 816.3 817.4 816.5 816.1 818.4 DAY 10 8 31 2 9 1 9 22 22 18 17 3 MIN. QFE PRESSURE IN HPA 806.2 798.9 800.0 800.2 804.0 806.3 801.7 804.3 806.0 810.3 803.9 801.4 798.9 DAY 26 23 13 10 3 29 29 7 1 13 25 29 MEAN QNH PRESSURE IN HPA 994.9 991.6 989.4 993.3 993.6 991.9 989.2 990.2 993.5 997.1 995.0 992.1 992.7 MAX. QNH PRESSURE IN HPA 1000.7 996.7 995.9 1002.7 998.6 995.2 993.3 993.2 1000.3 1001.6 1000.5 1000.0 1002.7 DAY 10 8 31 2 9 1 9 22 22 18 17 3 MIN. QNH PRESSURE IN HPA 988.4 979.7 981.0 981.3 985.8 988.5 983.0 986.1 988.1 993.2 985.6 982.7 979.7 DAY 26 23 13 10 3 29 29 7 1 13 25 29 MEAN QFF PRESSURE IN HPA 996.2 990.9 986.9 986.9 985.1 979.3 973.9 974.7 980.7 989.5 990.8 992.1 985.6 MAX. QFF PRESSURE IN HPA 1003.6 998.8 992.7 995.7 995.4 983.9 978.9 978.8 988.7 996.0 997.3 998.8 1003.6 DAY 10 24 22 2 9 1 9 31 21 15 17 3 MIN. QFF PRESSURE IN HPA 987.9 975.9 981.6 976.2 978.4 973.4 967.4 968.5 974.8 983.8 983.1 983.5 967.4 DAY 26 23 5 10 26 29 29 6 1 6 24 29 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 811.9 809.4 807.2 810.5 810.7 809.4 806.9 807.9 810.8 813.8 811.9 809.1 810.0 MAX. QFE PRESSURE IN HPA 816.4 814.2 811.8 814.9 815.2 812.2 810.9 810.2 816.8 817.8 816.4 815.3 817.8 DAY 9 8 22 2 18 1 10 22 22 18 17 3 MIN. QFE PRESSURE IN HPA 805.6 799.4 800.3 800.5 804.0 806.5 801.9 803.9 805.9 809.8 804.8 801.5 799.4 DAY 26 23 13 10 3 4 29 7 1 7 24 29 MEAN QNH PRESSURE IN HPA 995.1 992.2 989.6 993.4 993.7 992.1 989.2 990.4 993.7 997.3 995.1 991.8 992.8 MAX. QNH PRESSURE IN HPA 1000.4 997.8 995.0 998.6 999.0 995.4 993.9 993.1 1000.9 1002.0 1000.4 999.1 1002.0 DAY 9 8 22 2 18 1 10 22 22 18 17 3 MIN. QNH PRESSURE IN HPA 987.6 980.3 981.4 981.6 985.8 988.7 983.3 985.6 988.0 992.6 986.7 982.8 980.3 DAY 26 23 13 10 3 4 29 7 1 7 24 29 MEAN QFF PRESSURE IN HPA 998.1 993.0 988.1 988.3 986.4 981.2 975.2 976.0 982.7 991.4 992.7 993.1 987.2 MAX. QFF PRESSURE IN HPA 1004.9 999.9 994.8 994.5 996.3 986.2 979.9 980.3 990.7 997.2 999.6 999.4 1004.9 DAY 10 8 22 13 9 1 9 31 30 14 26 10 MIN. QFF PRESSURE IN HPA 988.8 978.6 977.2 980.5 979.3 976.1 968.3 970.6 976.1 985.1 983.1 984.2 968.3 DAY 26 23 4 10 26 30 29 15 1 7 24 29 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1955 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 812.2 809.7 808.3 811.0 811.3 809.6 807.1 808.2 811.4 814.4 812.7 809.6 810.5 MAX. QFE PRESSURE IN HPA 818.1 815.0 830.3 816.1 815.5 814.0 811.5 811.2 816.6 819.2 817.9 817.2 830.3 DAY 9 8 2 2 17 6 10 23 22 18 16 2 MIN. QFE PRESSURE IN HPA 805.6 802.1 799.5 803.3 805.0 804.8 802.7 804.3 806.1 811.2 804.7 802.3 799.5 DAY 26 23 4 10 3 30 29 15 1 25 24 29 MEAN QNH PRESSURE IN HPA 995.4 992.5 990.9 994.0 994.4 992.4 989.4 990.7 994.4 998.1 996.0 992.4 993.4 MAX. QNH PRESSURE IN HPA 1002.4 998.7 1016.8 1000.0 999.3 997.6 994.6 994.3 1000.6 1003.7 1002.2 1001.3 1016.8 DAY 9 8 2 2 17 6 10 23 22 18 16 2 MIN. QNH PRESSURE IN HPA 987.6 983.5 980.4 984.9 986.9 986.7 984.2 986.1 988.2 994.3 986.6 983.8 980.4 DAY 26 23 4 10 3 30 29 15 1 25 24 29 MEAN QFF PRESSURE IN HPA 998.4 992.5 989.0 987.6 986.0 980.2 974.8 975.7 982.7 991.5 992.9 993.2 987.0 MAX. QFF PRESSURE IN HPA 1007.7 1000.4 1012.9 994.5 995.1 986.6 981.6 980.2 990.4 997.3 1000.8 1000.0 1012.9 DAY 9 8 2 12 8 6 9 23 30 15 16 2 MIN. QFF PRESSURE IN HPA 988.0 981.7 975.3 981.4 980.6 972.7 970.6 969.8 975.4 985.3 982.4 984.1 969.8 DAY 26 23 4 9 22 30 28 15 1 7 24 29 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 812.0 809.5 807.2 810.3 810.8 809.1 806.4 807.6 810.6 813.8 812.2 809.6 809.9 MAX. QFE PRESSURE IN HPA 817.0 814.9 812.6 815.0 815.3 812.8 810.8 811.2 816.6 818.2 817.5 817.5 818.2 DAY 9 8 22 2 17 1 10 23 22 18 16 2 MIN. QFE PRESSURE IN HPA 806.5 802.2 800.1 802.1 804.3 804.3 802.5 803.5 805.5 810.6 805.7 803.5 800.1 DAY 26 23 12 10 3 22 29 15 1 1 23 29 MEAN QNH PRESSURE IN HPA 995.2 992.2 989.6 993.2 993.8 991.8 988.6 990.0 993.6 997.4 995.4 992.4 992.8 MAX. QNH PRESSURE IN HPA 1001.1 998.6 995.9 998.7 999.1 996.1 993.8 994.3 1000.6 1002.5 1001.7 1001.7 1002.5 DAY 9 8 22 2 17 1 10 23 22 18 16 2 MIN. QNH PRESSURE IN HPA 988.7 983.6 981.2 983.5 986.1 986.1 984.0 985.2 987.5 993.5 987.8 985.2 981.2 DAY 26 23 12 10 3 22 29 15 1 1 23 29 MEAN QFF PRESSURE IN HPA 997.1 991.6 986.8 986.3 985.1 978.8 973.0 973.9 980.5 989.4 991.4 992.4 985.5 MAX. QFF PRESSURE IN HPA 1005.1 999.0 993.4 994.4 995.3 984.5 978.2 980.1 990.7 995.4 998.8 1000.8 1005.1 DAY 10 8 22 12 8 1 9 23 22 15 16 2 MIN. QFF PRESSURE IN HPA 988.6 982.7 977.4 980.0 979.2 970.5 969.0 968.0 973.1 983.9 983.4 985.5 968.0 DAY 26 23 4 9 21 29 28 6 10 1 23 4 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 810.9 808.2 806.2 809.5 810.0 808.0 805.3 806.5 809.3 812.6 810.9 808.5 808.8 MAX. QFE PRESSURE IN HPA 815.6 813.7 811.7 813.7 815.0 811.5 810.0 810.3 814.5 816.8 815.2 816.6 816.8 DAY 9 8 31 2 18 1 10 21 21 18 17 2 MIN. QFE PRESSURE IN HPA 804.6 802.2 800.1 802.5 805.6 803.7 801.5 802.4 804.7 809.7 803.4 802.1 800.1 DAY 26 10 12 9 2 29 28 7 1 1 24 29 MEAN QNH PRESSURE IN HPA 993.9 990.7 988.4 992.2 992.9 990.5 987.2 988.7 992.0 995.9 993.9 991.1 991.4 MAX. QNH PRESSURE IN HPA 999.4 997.2 994.8 997.2 998.7 994.6 992.8 993.2 998.1 1000.9 999.0 1000.6 1000.9 DAY 9 8 31 2 18 1 10 21 21 18 17 2 MIN. QNH PRESSURE IN HPA 986.5 983.6 981.2 984.0 987.6 985.4 982.8 983.9 986.6 992.5 985.1 983.5 981.2 DAY 26 10 12 9 2 29 28 7 1 1 24 29 MEAN QFF PRESSURE IN HPA 995.2 989.7 985.8 985.7 984.2 977.7 971.8 973.1 979.1 988.2 989.9 991.1 984.3 MAX. QFF PRESSURE IN HPA 1002.5 997.5 990.5 991.2 994.7 983.2 977.1 978.8 986.1 994.5 996.2 999.1 1002.5 DAY 9 8 21 12 8 1 8 21 21 14 26 2 MIN. QFF PRESSURE IN HPA 986.8 981.4 980.2 978.6 978.0 970.4 967.2 967.2 972.5 983.0 982.0 984.1 967.2 DAY 26 22 27 9 21 29 20 6 10 6 24 29 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1955 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 811.2 808.5 806.5 809.6 809.8 807.7 805.0 806.1 808.9 812.4 811.0 808.7 808.8 MAX. QFE PRESSURE IN HPA 816.2 813.8 811.5 813.7 814.6 811.0 809.1 809.7 814.5 816.9 814.8 816.2 816.9 DAY 9 8 31 1 8 1 9 21 21 18 17 2 MIN. QFE PRESSURE IN HPA 804.7 802.5 800.1 803.0 804.3 804.0 801.1 802.1 804.5 809.1 802.5 802.6 800.1 DAY 26 23 12 9 2 30 28 7 1 31 24 29 MEAN QNH PRESSURE IN HPA 994.2 991.1 988.7 992.3 992.6 990.2 986.9 988.2 991.6 995.7 994.1 991.3 991.4 MAX. QNH PRESSURE IN HPA 1000.2 997.3 994.6 997.2 998.3 994.0 991.8 992.5 998.1 1001.0 998.5 1000.2 1001.0 DAY 9 8 31 1 8 1 9 21 21 18 17 2 MIN. QNH PRESSURE IN HPA 986.6 984.0 981.2 984.6 986.1 985.8 982.3 983.5 986.4 991.8 984.0 984.1 981.2 DAY 26 23 12 9 2 30 28 7 1 31 24 29 MEAN QFF PRESSURE IN HPA 997.1 991.6 987.3 987.2 985.2 979.0 972.8 973.7 980.5 989.7 991.6 992.4 985.7 MAX. QFF PRESSURE IN HPA 1004.7 999.8 991.8 992.5 995.7 984.5 977.4 979.5 987.4 996.1 998.2 999.5 1004.7 DAY 9 8 21 12 8 2 10 21 21 14 17 2 MIN. QFF PRESSURE IN HPA 987.6 982.7 978.9 981.2 979.2 973.1 967.5 968.1 974.1 983.9 980.7 985.6 967.5 DAY 26 22 4 25 25 30 20 5 10 6 24 29 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 811.7 809.1 807.1 810.2 810.9 808.6 806.1 807.0 810.3 813.4 811.8 809.4 809.6 MAX. QFE PRESSURE IN HPA 816.7 814.1 812.6 814.2 816.1 811.9 809.8 809.7 815.2 817.4 816.7 816.5 817.4 DAY 9 8 31 1 8 1 8 29 21 18 16 2 MIN. QFE PRESSURE IN HPA 805.3 802.2 800.1 802.9 805.8 804.6 803.3 803.5 805.8 809.9 802.3 802.9 800.1 DAY 26 10 12 9 21 28 29 7 1 12 24 28 MEAN QNH PRESSURE IN HPA 994.9 991.8 989.5 993.1 993.9 991.2 988.3 989.3 993.2 996.8 994.9 992.2 992.4 MAX. QNH PRESSURE IN HPA 1000.7 997.7 995.9 997.8 1000.0 995.1 992.6 992.5 999.0 1001.6 1000.7 1000.5 1001.6 DAY 9 8 31 1 8 1 8 29 21 18 16 2 MIN. QNH PRESSURE IN HPA 987.3 983.6 981.2 984.5 987.9 986.5 984.9 985.2 987.9 992.7 983.8 984.5 981.2 DAY 26 10 12 9 21 28 29 7 1 12 24 28 MEAN QFF PRESSURE IN HPA 997.7 991.6 987.6 986.7 985.4 978.9 973.4 974.3 981.5 990.3 991.9 992.9 986.0 MAX. QFF PRESSURE IN HPA 1005.6 998.8 993.6 992.3 996.7 984.5 979.5 979.3 989.6 997.1 1000.2 999.7 1005.6 DAY 9 8 21 12 8 6 8 29 29 14 16 2 MIN. QFF PRESSURE IN HPA 988.0 979.7 976.4 979.6 977.4 971.1 969.9 967.2 974.6 985.4 980.0 985.0 967.2 DAY 26 22 3 9 21 28 27 5 1 5 24 29 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 811.7 809.2 807.1 810.4 811.0 808.9 806.8 807.5 810.7 813.7 811.9 809.3 809.8 MAX. QFE PRESSURE IN HPA 816.6 814.6 814.1 814.6 815.9 811.8 810.1 810.1 816.0 817.9 816.6 816.2 817.9 DAY 9 8 31 1 8 1 8 22 21 20 16 2 MIN. QFE PRESSURE IN HPA 802.5 801.2 798.9 801.5 804.5 805.8 804.6 804.3 806.4 810.4 803.5 802.3 798.9 DAY 31 23 3 9 2 30 29 5 1 12 24 28 MEAN QNH PRESSURE IN HPA 994.8 991.9 989.4 993.3 994.1 991.5 989.1 989.8 993.7 997.2 995.0 992.0 992.6 MAX. QNH PRESSURE IN HPA 1000.6 998.3 997.7 998.3 999.8 995.0 993.0 993.0 999.9 1002.2 1000.6 1000.2 1002.2 DAY 9 8 31 1 8 1 8 22 21 20 16 2 MIN. QNH PRESSURE IN HPA 984.0 982.5 979.7 982.8 986.4 987.9 986.5 986.1 988.6 993.3 985.2 983.8 979.7 DAY 31 23 3 9 2 30 29 5 1 12 24 28 MEAN QFF PRESSURE IN HPA 996.8 991.1 986.7 986.5 985.3 978.5 973.4 973.8 980.7 989.2 991.1 992.1 985.4 MAX. QFF PRESSURE IN HPA 1003.7 998.4 992.1 993.6 996.8 982.9 978.1 978.2 989.8 995.8 997.9 999.4 1003.7 DAY 9 7 21 12 8 1 8 22 29 14 16 2 MIN. QFF PRESSURE IN HPA 987.9 979.6 973.7 978.2 978.0 972.2 970.7 967.6 974.3 984.0 981.7 984.2 967.6 DAY 26 22 3 9 25 30 13 5 1 5 24 28 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN NOZHEH (40767) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 12 N LONGITUDE 48 43 E DATA PROCESSING CENTER ELEVATION 1679.7 M MEANS AND EXTREMES FOR THE YEAR 1956 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -2.9 2.3 4.0 10.0 15.7 21.0 25.3 23.5 18.1 12.5 8.1 -1.0 11.4 MINIMUN AIR TEMPERATURE (C) -6.7 -2.0 -0.2 4.8 8.3 12.3 16.3 14.9 10.0 5.4 3.8 -4.3 5.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 27 11 5 2 0 0 0 0 0 0 0 19 64 DAYS WITH FREEZING MIN.<= 0 31 18 19 4 0 0 0 0 0 0 6 26 104 TEMPERATURE RECORDS LOWEST(C) -13.0 -13.0 -5.0 -7.0 3.0 8.0 14.0 11.0 4.0 1.0 -2.0 -17.0 -17.0 DAY 21 2 18 1 8 1 4 7 29 26 13 25 MAXIMUM AIR TEMPERATURE (C) 2.2 7.6 9.1 15.7 22.8 29.5 34.4 32.7 27.3 21.3 14.2 4.6 18.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 13 31 27 6 0 0 0 77 DAYS WITH MAXIMUM TEMP. <= 0 7 0 0 0 0 0 0 0 0 0 0 6 13 TEMPERATURE RECORDS HIGHEST(C) 7.0 11.0 15.0 22.0 28.0 35.0 36.0 37.0 32.0 25.0 20.0 14.0 37.0 DAY 12 4 7 25 15 30 1 4 1 4 5 5 DIF. BETWEEN (MAX.-MIN.) (C) 8.9 9.6 9.3 10.9 14.5 17.2 18.1 17.8 17.3 15.9 10.4 8.9 13.3 MEAN DAILY TEMP. (MDT) (C) -2.3 2.8 4.5 10.3 15.6 20.9 25.4 23.8 18.6 13.3 9.0 0.1 11.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 26.0 135.0 88.0 2.0 0.0 0.0 0.0 251.0 HEATING DEG. DAYS(BASE 18 0C) 628.0 442.0 403.0 231.5 80.0 0.5 0.0 0.0 27.5 144.5 270.5 554.0 2781.5 DEWPOINT (MEAN C) -4.6 -2.6 -1.9 1.9 1.0 5.2 9.4 8.7 4.7 -2.0 -2.5 -4.2 1.1 MIXING RATIO (G/KG) 3.44 4.06 4.17 5.57 5.17 7.01 9.43 8.91 7.14 4.10 3.98 3.58 5.55 VAPOUR PRESSURE (HPA) 4.45 5.23 5.36 7.16 6.66 9.00 12.03 11.42 9.18 5.33 5.17 4.64 7.14 SATURATION DEF. (HPA) 0.65 2.28 3.07 5.72 12.18 17.45 21.96 19.18 12.94 10.20 6.04 1.49 9.43 RELATIVE HUMIDITY (MEAN %) 88 73 68 60 39 38 39 40 45 39 50 81 55 RELATIVE HUMIDITY (MAX. %) 94 90 87 79 60 58 58 57 66 58 64 92 72 RELATIVE HUMIDITY (MIN. %) 77 50 51 42 24 23 25 29 29 22 34 67 39 RELATIVE HUMIDITY (MEAN% 03UTC) 90 81 82 73 57 56 57 55 63 56 58 86 68 RELATIVE HUMIDITY (MEAN% 09UTC) 88 66 59 54 29 28 30 31 34 25 41 76 47 RELATIVE HUMIDITY (MEAN% 15UTC) 89 69 61 51 29 26 29 33 34 33 45 81 48 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 41.0 86.0 69.6 47.4 11.0 0.0 0.0 0.0 0.0 0.0 25.0 38.9 318.9 DAYS WITH PRECIPITATION >=10 2 3 1 1 1 0 0 0 0 0 1 2 11 DAYS WITH PRECIPITATION >= 5 5 6 6 3 1 0 0 0 0 0 3 2 26 DAYS WITH PRECIPITATION >= 1 6 10 15 11 1 0 0 0 0 0 3 5 51 DAYS WITH PRECIPITATION 7 11 16 14 1 0 0 0 3 0 4 6 62 GREATEST DAILY PRECIPITATION 11.0 28.0 11.0 14.0 11.0 0.0 0.0 0.0 0.0 0.0 11.0 15.0 28.0 DAY 15 29 20 13 1