STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) ***** ***** 13.9 19.9 26.6 29.8 30.9 30.6 26.0 15.7 13.6 8.1 ***** MINIMUN AIR TEMPERATURE (C) ***** -0.1 5.8 11.1 16.5 18.5 20.3 18.9 15.4 6.4 4.3 -0.3 ***** DAYS WITH MINIMUM TEMP. >=21 **** 0 0 1 3 5 12 4 0 0 0 0 **** DAYS WITH MINIMUM TEMP. <=-4 **** 5 0 0 0 0 0 0 0 0 1 5 **** DAYS WITH FREEZING MIN.<= 0 **** 12 3 0 0 0 0 0 0 6 4 19 **** TEMPERATURE RECORDS LOWEST(C) ***** -4.8 -1.8 2.4 9.4 12.4 16.0 15.4 10.4 -1.6 -6.2 -7.6 ***** DAY ** 8 23 1 8 22 13 31 25 16 30 3 MAXIMUM AIR TEMPERATURE (C) ***** 13.5 19.1 24.9 31.3 33.9 35.5 35.3 31.5 21.0 18.7 13.4 ***** DAYS WITH MAXIMUM TEMP. >=30 **** 0 0 11 21 30 31 31 20 4 0 0 **** DAYS WITH MAXIMUM TEMP. <= 0 **** 0 0 0 0 0 0 0 0 0 0 0 **** TEMPERATURE RECORDS HIGHEST(C)***** 22.6 25.0 35.0 36.8 39.4 41.0 37.0 39.4 32.2 29.2 25.6 ***** DAY ** 27 14 27 25 5 9 4 6 5 7 24 DIF. BETWEEN (MAX.-MIN.) (C) ***** 13.6 13.3 13.8 14.8 15.4 15.2 16.4 16.1 14.6 14.4 13.7 ***** MEAN DAILY TEMP. (MDT) (C) ***** 6.7 12.4 18.0 23.9 26.2 27.9 27.1 23.5 13.7 11.5 6.6 ***** COOLING DEG. DAYS(BASE 21 0C)****** 0.0 0.0 39.3 101.3 157.3 214.9 189.7 78.3 1.8 0.0 0.0 ****** HEATING DEG. DAYS(BASE 18 0C)****** 247.7 172.1 78.2 2.2 0.0 0.0 0.0 0.0 161.9 200.0 354.8 ****** 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. ****** 7.4 40.9 32.0 6.3 0.0 0.0 0.0 0.0 16.0 0.3 10.0 ****** DAYS WITH PRECIPITATION >=10 **** 0 1 1 0 0 0 0 0 1 0 1 **** DAYS WITH PRECIPITATION >= 5 **** 1 3 3 1 0 0 0 0 1 0 1 **** DAYS WITH PRECIPITATION >= 1 **** 2 7 4 1 0 0 0 0 3 0 1 **** DAYS WITH PRECIPITATION **** 5 11 4 5 0 0 0 1 4 2 2 **** GREATEST DAILY PRECIPITATION ****** 6.0 18.0 17.0 6.0 0.0 0.0 0.0 0.0 13.0 0.3 10.0 ****** DAY ** 21 29 6 29 ** ** ** ** 27 4 29 DAY WITH THUNDER STORM **** 0 0 1 0 0 0 0 0 1 0 0 **** DAYS WITH SNOW OR SLEET **** 0 0 0 0 0 0 0 0 0 0 0 **** DAYS WITH DUST **** 0 3 3 2 5 11 5 7 2 0 1 **** WIND DIRECTION (PREVAILING) *** *** 315 360 90 90 90 90 90 90 45 90 *** PREVAILING WIND SPEED(KNOTS) **** **** 10.2 6.4 6.5 8.4 8.7 9.0 8.7 5.7 5.0 5.0 **** PREVAILING WIND PERCENT ***** ***** 14.2 17.4 27.1 30.0 32.3 31.8 34.0 15.5 22.0 9.1 ***** CALMS PERCENT OF WIND ***** ***** 32.3 27.5 26.5 13.3 17.4 17.5 25.3 52.9 34.0 59.1 ***** NO. OF WIND OBSERVATION **** 110 155 149 155 150 155 154 150 155 150 154 1637 VECTOR WIND DIRECTION (MEAN) *** *** 290 339 69 103 96 99 106 41 55 356 *** VECTOR WIND MAGNITUDE(KNOTS) **** **** 2.3 2.1 2.4 5.4 5.8 5.5 5.5 1.7 1.4 0.6 **** WIND STEADINESES (MEAN %) ***** ***** 31.5 35.6 44.4 72.0 77.3 74.3 79.7 54.8 33.3 24.0 ***** WIND SPEED (MEAN KNOTS) **** **** 7.3 5.9 5.4 7.5 7.5 7.4 6.9 3.1 4.2 2.5 **** FASTEST WIND DIRECTION *** *** 220 290 330 120 120 90 120 340 210 210 *** FASTEST WIND SPEED (KNOTS) *** *** 35 25 19 25 23 21 27 19 19 23 *** DAY ** ** 14 20 4 9 3 20 7 9 7 24 DAYS WITH SKY CLEAR (0-2)/8 **** 13 9 14 13 29 25 30 28 20 18 23 **** DAYS WITH P.CLOUDY (3-6)/8 **** 5 12 12 14 1 6 1 2 9 11 5 **** DAYS WITH CLOUDY (7-8)/8 **** 4 10 4 4 0 0 0 0 2 1 3 **** DAYS WITH VISIBILITY =< 2 KM **** 0 0 1 0 0 1 0 1 0 1 2 **** DURATION OF SUNSHINE HOURS ****** 157.7 204.8 272.8 274.3 364.6 354.1 361.1 297.8 254.6 255.0 222.9 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 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 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 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 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 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 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.2 6.8 12.4 19.7 26.8 31.9 32.5 29.4 26.1 19.5 14.1 8.6 19.4 MINIMUN AIR TEMPERATURE (C) -1.3 0.7 5.4 11.6 16.5 21.0 23.2 20.1 15.6 9.1 5.2 1.4 10.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 3 14 24 13 2 0 0 0 56 DAYS WITH MINIMUM TEMP. <=-4 6 3 0 0 0 0 0 0 0 0 0 3 12 DAYS WITH FREEZING MIN.<= 0 20 11 2 0 0 0 0 0 0 0 6 7 46 TEMPERATURE RECORDS LOWEST(C) -6.6 -6.8 0.0 3.4 11.2 17.2 16.4 15.4 7.8 5.6 -2.6 -7.6 -7.6 DAY 21 7 7 4 4 1 24 27 27 4 16 31 MAXIMUM AIR TEMPERATURE (C) 9.5 11.5 17.4 24.8 31.8 36.5 37.1 34.2 31.5 25.3 19.6 13.2 24.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 7 23 30 31 29 19 0 0 0 139 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 17.0 20.6 28.8 32.0 39.0 44.2 42.6 38.2 38.8 28.4 27.0 18.8 44.2 DAY 29 2 21 14 28 17 1 5 6 11 10 27 DIF. BETWEEN (MAX.-MIN.) (C) 10.8 10.8 12.0 13.2 15.3 15.5 13.9 14.1 15.9 16.2 14.4 11.8 13.7 MEAN DAILY TEMP. (MDT) (C) 4.1 6.1 11.4 18.2 24.2 28.8 30.2 27.1 23.6 17.2 12.4 7.3 17.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 22.2 108.2 233.0 284.8 189.8 102.8 0.0 0.0 0.0 940.9 HEATING DEG. DAYS(BASE 18 0C) 430.1 345.3 205.4 55.8 0.2 0.0 0.0 0.0 3.0 36.2 169.3 331.8 1577.1 DEWPOINT (MEAN C) -5.9 -3.7 -0.1 3.0 3.9 5.1 6.2 6.3 1.9 2.1 -1.0 -0.4 1.4 MIXING RATIO (G/KG) 2.85 3.44 4.49 5.74 5.75 6.31 6.95 6.90 5.10 5.05 4.23 4.35 5.10 VAPOUR PRESSURE (HPA) 4.08 4.91 6.37 8.14 8.16 8.91 9.77 9.74 7.25 7.22 6.05 6.21 7.23 SATURATION DEF. (HPA) 5.08 5.54 8.86 16.48 28.68 40.09 40.35 32.60 28.78 16.65 11.27 5.54 19.99 RELATIVE HUMIDITY (MEAN %) 48 52 49 38 25 19 21 24 22 33 38 56 35 RELATIVE HUMIDITY (MAX. %) 70 78 77 60 39 26 29 33 34 47 51 74 52 RELATIVE HUMIDITY (MIN. %) 34 36 31 25 18 16 16 19 16 25 30 43 26 RELATIVE HUMIDITY (MEAN% 03UTC) 69 75 75 58 39 26 28 33 34 47 51 73 51 RELATIVE HUMIDITY (MEAN% 09UTC) 38 41 41 32 20 17 18 21 18 28 32 49 30 RELATIVE HUMIDITY (MEAN% 15UTC) 42 48 39 31 20 17 19 22 19 29 35 51 31 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 3.9 30.0 67.0 37.1 0.0 0.0 8.0 0.0 0.0 2.0 0.0 7.9 155.9 DAYS WITH PRECIPITATION >=10 0 0 2 2 0 0 0 0 0 0 0 0 4 DAYS WITH PRECIPITATION >= 5 0 3 7 2 0 0 1 0 0 0 0 1 14 DAYS WITH PRECIPITATION >= 1 1 7 7 5 0 0 1 0 0 1 0 2 24 DAYS WITH PRECIPITATION 5 11 7 8 1 0 4 1 0 1 0 5 43 GREATEST DAILY PRECIPITATION 2.4 7.0 22.0 19.0 0.0 0.0 8.0 0.0 0.0 2.0 0.0 6.0 22.0 DAY 19 26 24 27 ** ** 11 ** ** 16 ** 20 DAY WITH THUNDER STORM 0 0 0 5 1 0 0 2 0 0 0 0 8 DAYS WITH SNOW OR SLEET 0 1 1 0 0 0 0 0 0 0 0 0 2 DAYS WITH DUST 1 1 3 1 6 5 2 3 3 0 0 1 26 WIND DIRECTION (PREVAILING) 45 360 90 90 90 90 90 90 90 90 45 45 90 PREVAILING WIND SPEED(KNOTS) 5.2 6.8 7.2 7.6 7.9 8.8 10.5 8.8 7.3 6.0 5.7 5.7 7.9 PREVAILING WIND PERCENT 11.6 17.2 16.1 23.3 36.1 32.0 35.5 33.5 40.0 22.6 18.0 13.5 23.0 CALMS PERCENT OF WIND 42.6 32.4 25.8 24.0 12.9 15.3 14.2 17.4 19.3 33.5 36.7 37.4 26.0 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 350 356 356 65 66 93 104 101 104 64 24 326 78 VECTOR WIND MAGNITUDE(KNOTS) 1.6 2.3 2.1 2.5 3.1 4.3 7.7 6.0 4.7 2.0 1.1 0.4 2.4 WIND STEADINESES (MEAN %) 40.0 50.0 33.9 42.4 44.3 55.8 78.6 83.3 79.7 52.6 29.7 9.8 41.4 WIND SPEED (MEAN KNOTS) 4.0 4.6 6.2 5.9 7.0 7.7 9.8 7.2 5.9 3.8 3.7 4.1 5.8 FASTEST WIND DIRECTION 240 330 230 90 330 120 120 80 120 340 310 200 200 FASTEST WIND SPEED (KNOTS) 21 21 27 25 21 27 23 21 23 21 19 33 33 DAY 29 27 5 24 26 30 17 31 13 22 15 27 DAYS WITH SKY CLEAR (0-2)/8 14 11 19 9 25 29 25 28 30 30 22 21 263 DAYS WITH P.CLOUDY (3-6)/8 14 10 5 16 6 1 5 3 0 1 8 7 76 DAYS WITH CLOUDY (7-8)/8 3 8 7 5 0 0 1 0 0 0 0 3 27 DAYS WITH VISIBILITY =< 2 KM 4 7 3 0 0 1 0 0 2 0 0 1 18 DURATION OF SUNSHINE HOURS 194.4 175.1 229.1 179.1 353.1 368.8 344.4 349.7 ****** 162.5 226.9 198.1 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 895.6 894.6 890.7 892.4 890.5 887.1 885.5 887.9 892.0 896.5 897.1 895.6 892.1 MAX. QFE PRESSURE IN HPA 907.9 906.1 900.6 902.2 897.8 895.2 890.4 895.4 898.8 903.7 904.0 905.1 907.9 DAY-HOUR 3- 6 7- 6 17- 6 9- 6 5- 6 1- 6 23- 3 21- 6 25- 6 17- 6 6- 6 30- 6 MIN. QFE PRESSURE IN HPA 884.2 882.9 881.0 885.8 884.6 878.8 880.1 883.1 886.3 890.3 889.7 881.3 878.8 DAY-HOUR 29-12 3-12 5-12 30-12 29-15 30-15 8-12 29-15 4-15 7-12 20-12 27-15 MEAN QNH PRESSURE IN HPA 1016.2 1015.1 1010.8 1012.7 1010.6 1006.8 1005.0 1007.6 1012.2 1017.2 1017.8 1016.2 1012.4 MAX. QNH PRESSURE IN HPA 1029.9 1027.9 1021.8 1023.5 1018.7 1015.8 1010.5 1016.0 1019.8 1025.2 1025.5 1026.8 1029.9 DAY-HOUR 3- 6 7- 6 17- 6 9- 6 5- 6 1- 6 23- 3 21- 6 25- 6 17- 6 6- 6 30- 6 MIN. QNH PRESSURE IN HPA 1003.6 1002.2 1000.0 1005.4 1004.0 997.6 999.0 1002.4 1005.9 1010.4 1009.7 1000.4 997.6 DAY-HOUR 29-12 3-12 5-12 30-12 29-15 30-15 8-12 29-15 4-15 7-12 20-12 27-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 895.5 894.5 890.8 892.9 891.2 888.0 886.6 888.8 892.7 896.9 897.2 895.6 892.6 MAX. QFE PRESSURE IN HPA 907.2 904.4 899.5 901.0 897.1 894.5 890.4 893.8 898.2 902.6 902.6 903.9 907.2 DAY 3 7 17 9 5 1 23 21 25 17 6 30 MIN. QFE PRESSURE IN HPA 887.0 887.8 883.0 886.6 885.5 880.9 881.2 885.2 888.3 891.2 891.2 885.2 880.9 DAY 29 3 5 1 29 25 8 30 5 31 20 27 MEAN QNH PRESSURE IN HPA 1016.1 1015.0 1010.9 1013.2 1011.3 1007.8 1006.3 1008.7 1013.0 1017.7 1018.0 1016.3 1012.9 MAX. QNH PRESSURE IN HPA 1029.1 1026.0 1020.5 1022.2 1017.9 1015.0 1010.5 1014.2 1019.1 1024.0 1024.0 1025.4 1029.1 DAY 3 7 17 9 5 1 23 21 25 17 6 30 MIN. QNH PRESSURE IN HPA 1006.7 1007.6 1002.3 1006.3 1005.0 999.9 1000.3 1004.7 1008.1 1011.4 1011.4 1004.7 999.9 DAY 29 3 5 1 29 25 8 30 5 31 20 27 MEAN QFF PRESSURE IN HPA 1018.8 1016.6 1009.8 1009.3 1004.4 998.8 996.8 1000.4 1006.8 1014.5 1017.1 1017.3 1009.2 MAX. QFF PRESSURE IN HPA 1034.1 1032.0 1020.3 1020.7 1012.9 1008.1 1002.0 1006.2 1014.8 1021.6 1026.9 1031.1 1034.1 DAY 3 7 17 10 5 1 23 21 30 17 16 30 MIN. QFF PRESSURE IN HPA 1008.0 1003.9 999.2 1001.1 995.5 989.5 990.1 996.5 1000.2 1008.1 1009.1 1005.2 989.5 DAY 29 3 5 15 29 23 8 30 5 21 14 27 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 896.7 895.8 892.0 893.8 891.7 888.4 886.8 889.3 893.5 897.9 898.5 896.8 893.4 MAX. QFE PRESSURE IN HPA 907.9 906.1 900.6 902.2 897.8 895.2 890.3 895.4 898.8 903.7 904.0 905.1 907.9 DAY 3 7 17 9 5 1 23 21 25 17 6 30 MIN. QFE PRESSURE IN HPA 886.7 889.2 883.8 889.0 886.5 881.2 881.4 885.9 889.5 892.9 891.6 885.6 881.2 DAY 29 3 5 1 29 23 8 30 5 31 20 27 MEAN QNH PRESSURE IN HPA 1017.4 1016.5 1012.2 1014.2 1011.9 1008.3 1006.5 1009.2 1013.9 1018.7 1019.4 1017.6 1013.8 MAX. QNH PRESSURE IN HPA 1029.9 1027.9 1021.8 1023.5 1018.7 1015.8 1010.4 1016.0 1019.8 1025.2 1025.5 1026.8 1029.9 DAY 3 7 17 9 5 1 23 21 25 17 6 30 MIN. QNH PRESSURE IN HPA 1006.4 1009.1 1003.2 1008.9 1006.1 1000.3 1000.5 1005.5 1009.5 1013.2 1011.8 1005.1 1000.3 DAY 29 3 5 1 29 23 8 30 5 31 20 27 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 895.5 894.9 891.1 892.7 890.7 887.3 885.7 888.0 892.1 896.5 897.0 895.3 892.2 MAX. QFE PRESSURE IN HPA 906.8 905.4 899.8 901.8 897.0 893.8 889.0 893.2 897.3 901.6 902.0 902.0 906.8 DAY 3 7 17 9 5 1 31 21 25 17 6 30 MIN. QFE PRESSURE IN HPA 885.3 885.6 883.2 887.8 886.0 879.7 881.3 884.7 888.1 891.3 890.7 882.8 879.7 DAY 29 3 5 30 1 23 8 30 1 7 20 27 MEAN QNH PRESSURE IN HPA 1016.1 1015.4 1011.2 1013.0 1010.8 1007.1 1005.2 1007.8 1012.4 1017.2 1017.8 1015.9 1012.5 MAX. QNH PRESSURE IN HPA 1028.6 1027.1 1020.9 1023.1 1017.8 1014.2 1008.9 1013.6 1018.1 1022.9 1023.3 1023.3 1028.6 DAY 3 7 17 9 5 1 31 21 25 17 6 30 MIN. QNH PRESSURE IN HPA 1004.8 1005.1 1002.5 1007.6 1005.6 998.6 1000.4 1004.1 1007.9 1011.5 1010.8 1002.0 998.6 DAY 29 3 5 30 1 23 8 30 1 7 20 27 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 894.8 893.6 889.7 891.2 889.4 886.0 884.2 886.7 890.8 895.3 896.0 894.6 891.0 MAX. QFE PRESSURE IN HPA 905.3 903.9 897.6 900.2 896.6 892.2 887.2 891.2 895.6 900.2 900.8 901.3 905.3 DAY 3 7 17 9 5 1 30 21 25 16 6 29 MIN. QFE PRESSURE IN HPA 884.2 882.9 881.0 885.8 884.7 879.2 880.1 883.3 886.7 890.3 889.7 881.8 879.2 DAY 29 3 5 30 29 23 8 29 1 7 20 27 MEAN QNH PRESSURE IN HPA 1015.4 1014.1 1009.7 1011.4 1009.4 1005.6 1003.6 1006.3 1010.9 1015.9 1016.7 1015.2 1011.2 MAX. QNH PRESSURE IN HPA 1027.0 1025.4 1018.4 1021.3 1017.3 1012.5 1006.9 1011.4 1016.2 1021.3 1022.0 1022.5 1027.0 DAY 3 7 17 9 5 1 30 21 25 16 6 29 MIN. QNH PRESSURE IN HPA 1003.6 1002.2 1000.0 1005.4 1004.1 998.1 999.0 1002.6 1006.4 1010.4 1009.7 1000.9 998.1 DAY 29 3 5 30 29 23 8 29 1 7 20 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 895.5 894.2 890.1 891.7 889.5 885.8 884.1 886.5 891.0 896.0 896.7 895.5 891.4 MAX. QFE PRESSURE IN HPA 905.7 904.5 897.5 900.1 897.6 891.6 887.6 890.4 895.6 901.3 902.6 903.7 905.7 DAY 3 7 17 9 5 1 30 21 24 16 15 29 MIN. QFE PRESSURE IN HPA 884.7 883.1 883.0 885.9 884.6 878.8 880.8 883.1 886.3 890.5 890.1 881.3 878.8 DAY 29 3 5 30 29 30 18 29 4 30 28 27 MEAN QNH PRESSURE IN HPA 1016.1 1014.6 1010.1 1011.9 1009.5 1005.4 1003.5 1006.2 1011.1 1016.7 1017.5 1016.1 1011.6 MAX. QNH PRESSURE IN HPA 1027.4 1026.1 1018.3 1021.2 1018.4 1011.8 1007.4 1010.5 1016.2 1022.5 1024.0 1025.2 1027.4 DAY 3 7 17 9 5 1 30 21 24 16 15 29 MIN. QNH PRESSURE IN HPA 1004.1 1002.4 1002.3 1005.5 1004.0 997.6 999.8 1002.4 1005.9 1010.6 1010.1 1000.4 997.6 DAY 29 3 5 30 29 30 18 29 4 30 28 27 MEAN QFF PRESSURE IN HPA 1018.7 1016.2 1009.0 1007.9 1002.5 996.2 994.0 997.9 1004.8 1013.4 1016.6 1017.2 1007.9 MAX. QFF PRESSURE IN HPA 1032.2 1031.8 1018.2 1020.3 1014.7 1004.5 998.6 1003.2 1012.7 1019.1 1024.3 1028.3 1032.2 DAY 3 7 25 3 5 1 10 26 29 17 25 29 MIN. QFF PRESSURE IN HPA 1005.0 999.0 997.8 999.7 994.5 986.8 989.3 994.5 997.8 1006.7 1006.7 998.6 986.8 DAY 29 3 21 15 29 23 1 29 4 7 14 27 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.9 2.6 12.7 19.6 23.8 31.7 32.3 29.6 26.1 20.9 12.2 8.7 18.5 MINIMUN AIR TEMPERATURE (C) -4.6 -2.9 5.1 9.7 14.2 21.2 22.3 18.2 14.5 9.7 4.4 2.0 9.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 3 18 20 3 2 0 0 0 46 DAYS WITH MINIMUM TEMP. <=-4 22 14 0 0 0 0 0 0 0 0 0 0 36 DAYS WITH FREEZING MIN.<= 0 29 24 1 0 0 0 0 0 0 0 1 17 72 TEMPERATURE RECORDS LOWEST(C) -8.2 -6.6 -1.0 1.2 2.4 16.2 17.6 15.4 7.8 3.6 -0.2 -2.4 -8.2 DAY 31 5 1 1 2 16 26 29 24 25 23 10 MAXIMUM AIR TEMPERATURE (C) 6.2 6.3 17.4 24.6 28.4 35.8 36.6 34.2 32.0 26.9 17.1 12.8 23.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 13 30 31 31 23 11 0 0 140 DAYS WITH MAXIMUM TEMP. <= 0 2 1 0 0 0 0 0 0 0 0 0 0 3 TEMPERATURE RECORDS HIGHEST(C) 11.4 13.8 24.6 30.8 37.0 40.8 42.5 37.6 39.4 32.6 21.0 21.0 42.5 DAY 4 22 27 29 28 24 9 11 14 8 16 5 DIF. BETWEEN (MAX.-MIN.) (C) 10.8 9.2 12.3 14.9 14.2 14.6 14.3 16.0 17.5 17.2 12.7 10.8 13.7 MEAN DAILY TEMP. (MDT) (C) 0.8 1.7 11.2 17.2 21.3 28.5 29.5 26.2 23.3 18.3 10.8 7.4 16.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 4.4 70.8 225.4 262.1 161.9 87.0 14.3 0.0 0.0 826.1 HEATING DEG. DAYS(BASE 18 0C) 533.8 457.1 210.4 57.5 32.7 0.0 0.0 0.0 4.3 41.2 217.4 327.5 1881.9 DEWPOINT (MEAN C) -4.4 ***** 0.9 -0.8 5.4 6.6 8.9 4.4 1.4 -2.6 0.2 0.0 ***** MIXING RATIO (G/KG) 3.18 ****** 4.75 4.77 6.87 7.38 8.34 6.06 5.18 3.67 4.47 4.45 ****** VAPOUR PRESSURE (HPA) 4.55 ****** 6.76 6.76 9.73 10.40 11.75 8.58 7.34 5.26 6.40 6.35 ****** SATURATION DEF. (HPA) 3.07 ****** 10.06 17.38 22.00 37.50 38.11 34.38 28.93 21.37 8.33 5.46 ****** RELATIVE HUMIDITY (MEAN %) 63 *** 43 31 33 23 25 21 23 24 47 59 *** RELATIVE HUMIDITY (MAX. %) 80 78 56 58 52 31 36 33 35 37 69 83 54 RELATIVE HUMIDITY (MIN. %) 49 53 33 17 23 19 19 16 16 16 31 42 28 RELATIVE HUMIDITY (MEAN% 03UTC) *** *** *** 46 51 31 36 33 33 37 67 79 *** RELATIVE HUMIDITY (MEAN% 09UTC) 55 62 39 25 27 20 22 19 18 17 38 47 32 RELATIVE HUMIDITY (MEAN% 15UTC) 62 64 41 24 30 22 21 18 19 24 48 61 36 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 11.3 24.7 20.0 8.0 16.0 0.6 0.0 0.0 0.0 0.0 14.5 10.9 106.0 DAYS WITH PRECIPITATION >=10 0 0 1 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 0 2 1 1 2 0 0 0 0 0 2 1 9 DAYS WITH PRECIPITATION >= 1 4 5 2 1 3 0 0 0 0 0 2 3 20 DAYS WITH PRECIPITATION 7 8 9 1 3 1 0 0 0 0 3 5 37 GREATEST DAILY PRECIPITATION 4.4 9.0 16.0 8.0 7.0 0.6 0.0 0.0 0.0 0.0 8.0 7.0 16.0 DAY 30 23 19 30 8 8 ** ** ** ** 17 16 DAY WITH THUNDER STORM 0 0 0 0 3 0 0 0 0 0 1 2 6 DAYS WITH SNOW OR SLEET 3 5 0 0 0 0 0 0 0 0 0 0 8 DAYS WITH DUST 1 0 4 0 3 0 9 0 2 1 0 2 22 WIND DIRECTION (PREVAILING) 360 90 90 90 135 135 90 90 90 90 45 45 90 PREVAILING WIND SPEED(KNOTS) 7.8 6.0 6.0 8.2 11.0 14.5 9.2 7.0 7.1 6.2 6.4 4.9 7.4 PREVAILING WIND PERCENT 18.7 16.4 18.7 20.0 21.9 33.3 30.3 23.9 19.3 22.6 10.7 11.0 18.6 CALMS PERCENT OF WIND 27.7 27.9 17.4 25.3 38.1 15.3 21.3 56.8 50.7 39.4 66.0 60.6 37.3 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 8 23 11 71 108 112 81 79 89 77 35 287 79 VECTOR WIND MAGNITUDE(KNOTS) 2.2 1.8 1.2 2.3 3.5 6.6 6.0 2.7 2.4 1.7 1.2 0.2 2.2 WIND STEADINESES (MEAN %) 47.8 40.0 18.2 37.7 57.4 74.2 80.0 84.4 72.7 50.0 57.1 7.1 44.9 WIND SPEED (MEAN KNOTS) 4.6 4.5 6.6 6.1 6.1 8.9 7.5 3.2 3.3 3.4 2.1 2.8 4.9 FASTEST WIND DIRECTION 320 110 230 270 130 150 120 50 130 130 320 220 220 FASTEST WIND SPEED (KNOTS) 21 19 27 19 23 31 23 14 19 17 19 33 33 DAY 18 12 30 1 28 6 3 6 20 21 17 5 DAYS WITH SKY CLEAR (0-2)/8 20 11 14 17 23 26 29 31 30 31 19 16 267 DAYS WITH P.CLOUDY (3-6)/8 7 9 12 10 6 4 2 0 0 0 9 11 70 DAYS WITH CLOUDY (7-8)/8 4 8 5 3 2 0 0 0 0 0 2 4 28 DAYS WITH VISIBILITY =< 2 KM 3 3 1 0 0 0 0 0 0 0 0 1 8 DURATION OF SUNSHINE HOURS 195.5 170.6 ****** 161.8 344.7 365.5 366.0 ****** ****** ****** 183.1 211.8 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 895.4 ****** 891.6 893.9 892.7 888.2 888.3 889.3 891.1 896.3 897.5 895.7 ****** MAX. QFE PRESSURE IN HPA 904.8 ****** 898.6 900.0 898.6 892.5 893.2 894.2 902.5 904.5 902.5 901.2 ****** DAY-HOUR 27- 6 **-** 1- 6 9- 6 1- 6 3- 6 10- 3 20- 6 23- 6 27- 6 8- 6 18-15 MIN. QFE PRESSURE IN HPA 885.8 ****** 879.5 884.3 885.7 882.6 884.2 882.4 884.2 888.8 892.3 884.6 ****** DAY-HOUR 12-12 **-** 30- 9 29-15 31-15 11-12 31-15 1-12 12-12 2- 3 17- 3 5-12 MEAN QNH PRESSURE IN HPA 1016.0 ****** 1011.8 1014.3 1013.0 1008.0 1008.1 1009.2 1011.3 1017.0 1018.3 1016.3 ****** MAX. QNH PRESSURE IN HPA 1026.4 ****** 1019.6 1021.1 1019.6 1012.8 1013.6 1014.7 1023.9 1026.1 1023.9 1022.4 ****** DAY-HOUR 27- 6 **-** 1- 6 9- 6 1- 6 3- 6 10- 3 20- 6 23- 6 27- 6 8- 6 18-15 MIN. QNH PRESSURE IN HPA 1005.4 ****** 998.4 1003.7 1005.3 1001.8 1003.6 1001.6 1003.6 1008.7 1012.6 1004.0 ****** DAY-HOUR 12-12 **-** 30- 9 29-15 31-15 11-12 31-15 1-12 12-12 2- 3 17- 3 5-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 894.6 893.5 889.2 889.4 890.1 891.8 896.8 897.5 896.0 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 899.2 897.1 891.8 893.2 893.8 901.4 903.1 901.1 899.5 ****** DAY ** ** ** 9 1 3 10 20 23 27 8 19 MIN. QFE PRESSURE IN HPA ****** ****** ****** 889.4 889.5 884.9 886.2 884.4 885.6 888.8 892.3 888.9 ****** DAY ** ** ** 29 28 11 7 2 13 2 17 5 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1015.1 1013.9 1009.1 1009.3 1010.1 1012.0 1017.5 1018.4 1016.7 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1020.2 1017.9 1012.0 1013.6 1014.2 1022.7 1024.5 1022.3 1020.5 ****** DAY ** ** ** 9 1 3 10 20 23 27 8 19 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1009.4 1009.5 1004.4 1005.8 1003.8 1005.1 1008.7 1012.6 1008.8 ****** DAY ** ** ** 29 28 11 7 2 13 2 17 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1011.4 1008.2 999.9 999.9 1002.0 1005.8 1014.1 1018.0 1017.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1018.1 1016.9 1003.1 1003.3 1006.6 1020.2 1023.3 1023.0 1022.9 ****** DAY ** ** ** 4 2 3 20 20 24 25 10 10 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1003.2 1000.2 995.0 995.5 996.0 997.7 1003.4 1009.4 1004.3 ****** DAY ** ** ** 29 28 12 7 2 14 2 17 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 896.8 898.2 892.8 895.2 893.9 889.5 889.7 890.7 892.6 897.7 898.7 896.9 894.4 MAX. QFE PRESSURE IN HPA 904.8 904.8 898.6 900.0 898.6 892.5 893.2 894.2 902.5 904.5 902.5 900.9 904.8 DAY 27 8 1 9 1 3 10 20 23 27 8 18 MIN. QFE PRESSURE IN HPA 888.2 883.7 879.6 888.6 890.1 885.0 887.0 885.4 887.1 889.8 893.7 888.9 879.6 DAY 17 23 30 29 31 11 18 1 13 2 20 5 MEAN QNH PRESSURE IN HPA 1017.6 1019.1 1013.2 1015.8 1014.4 1009.5 1009.7 1010.8 1012.9 1018.6 1019.7 1017.7 1014.9 MAX. QNH PRESSURE IN HPA 1026.4 1026.4 1019.6 1021.1 1019.6 1012.8 1013.6 1014.7 1023.9 1026.1 1023.9 1022.1 1026.4 DAY 27 8 1 9 1 3 10 20 23 27 8 18 MIN. QNH PRESSURE IN HPA 1008.0 1003.0 998.5 1008.5 1010.1 1004.5 1006.7 1004.9 1006.8 1009.8 1014.1 1008.8 998.5 DAY 17 23 30 29 31 11 18 1 13 2 20 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 895.5 897.3 891.8 894.1 893.0 888.4 888.4 889.6 891.4 896.3 897.3 895.3 893.2 MAX. QFE PRESSURE IN HPA 903.2 903.6 897.7 899.3 897.8 891.4 891.6 893.1 901.4 903.1 901.0 899.9 903.6 DAY 27 8 8 9 1 2 10 20 23 27 8 18 MIN. QFE PRESSURE IN HPA 887.6 883.5 879.5 886.2 888.8 883.7 886.1 884.3 885.2 889.3 892.5 885.4 879.5 DAY 12 23 30 29 31 1 7 1 19 2 20 5 MEAN QNH PRESSURE IN HPA 1016.1 1018.1 1012.1 1014.5 1013.4 1008.3 1008.3 1009.6 1011.6 1017.1 1018.1 1015.9 1013.6 MAX. QNH PRESSURE IN HPA 1024.6 1025.1 1018.6 1020.3 1018.7 1011.6 1011.8 1013.5 1022.7 1024.5 1022.2 1021.0 1025.1 DAY 27 8 8 9 1 2 10 20 23 27 8 18 MIN. QNH PRESSURE IN HPA 1007.4 1002.8 998.4 1005.8 1008.7 1003.0 1005.7 1003.7 1004.7 1009.2 1012.8 1004.9 998.4 DAY 12 23 30 29 31 1 7 1 19 2 20 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 894.7 896.5 890.6 892.7 891.5 887.1 887.1 888.2 889.9 895.1 896.6 894.7 892.1 MAX. QFE PRESSURE IN HPA 901.6 902.2 896.3 897.3 896.9 890.0 890.1 891.6 900.4 901.8 900.5 899.7 902.2 DAY 27 4 1 9 1 2 10 20 23 27 8 18 MIN. QFE PRESSURE IN HPA 885.8 885.3 881.7 885.0 886.6 882.6 884.8 882.4 884.2 889.0 892.3 884.6 881.7 DAY 12 23 28 29 31 11 31 1 12 2 20 5 MEAN QNH PRESSURE IN HPA 1015.2 1017.2 1010.7 1013.0 1011.7 1006.8 1006.8 1008.1 1009.9 1015.7 1017.3 1015.2 1012.3 MAX. QNH PRESSURE IN HPA 1022.9 1023.5 1017.0 1018.1 1017.7 1010.0 1010.1 1011.8 1021.5 1023.1 1021.7 1020.8 1023.5 DAY 27 4 1 9 1 2 10 20 23 27 8 18 MIN. QNH PRESSURE IN HPA 1005.4 1004.8 1000.8 1004.5 1006.3 1001.8 1004.3 1001.6 1003.6 1008.9 1012.6 1004.0 1000.8 DAY 12 23 28 29 31 11 31 1 12 2 20 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 895.5 897.2 891.1 892.8 891.5 886.8 887.0 887.9 890.0 895.6 897.4 895.7 892.4 MAX. QFE PRESSURE IN HPA 901.3 902.7 896.3 897.2 896.4 889.4 890.4 891.4 900.4 902.2 900.8 901.2 902.7 DAY 27 4 1 3 1 2 10 31 23 27 8 18 MIN. QFE PRESSURE IN HPA 887.5 889.0 880.8 884.3 885.7 882.8 884.2 882.5 884.2 889.4 894.1 888.9 880.8 DAY 4 11 28 29 31 11 31 1 12 2 19 5 MEAN QNH PRESSURE IN HPA 1016.2 1018.0 1011.2 1013.2 1011.7 1006.4 1006.7 1007.6 1010.0 1016.3 1018.2 1016.3 1012.7 MAX. QNH PRESSURE IN HPA 1022.5 1024.1 1017.0 1018.0 1017.1 1009.4 1010.5 1011.6 1021.5 1023.5 1022.0 1022.4 1024.1 DAY 27 4 1 3 1 2 10 31 23 27 8 18 MIN. QNH PRESSURE IN HPA 1007.3 1008.9 999.8 1003.7 1005.3 1002.0 1003.6 1001.7 1003.6 1009.4 1014.6 1008.8 999.8 DAY 4 11 28 29 31 11 31 1 12 2 19 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1009.4 1005.9 997.1 997.2 999.4 1003.8 1012.7 1017.7 1017.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1016.6 1016.2 1000.4 1000.8 1003.9 1018.7 1022.3 1021.9 1024.5 ****** DAY ** ** ** 3 1 2 20 31 23 24 8 18 MIN. QFF PRESSURE IN HPA ****** ****** ****** 997.1 995.9 992.4 993.7 993.8 996.4 1004.0 1012.4 1005.3 ****** DAY ** ** ** 29 31 11 7 1 12 2 16 5 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.0 5.9 12.5 19.5 27.6 32.2 31.5 31.2 27.2 19.7 14.6 6.3 19.3 MINIMUN AIR TEMPERATURE (C) -1.6 0.8 4.2 10.6 17.6 21.7 21.3 20.8 15.2 9.3 4.7 -0.4 10.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 1 4 19 19 13 1 0 0 0 57 DAYS WITH MINIMUM TEMP. <=-4 6 0 0 0 0 0 0 0 0 0 0 5 11 DAYS WITH FREEZING MIN.<= 0 18 14 4 0 0 0 0 0 0 0 3 15 54 TEMPERATURE RECORDS LOWEST(C) -14.0 -3.4 -1.6 4.4 13.2 16.4 17.6 16.4 9.8 1.6 -1.6 -7.0 -14.0 DAY 27 9 22 8 16 3 13 6 30 20 18 30 MAXIMUM AIR TEMPERATURE (C) 6.6 9.5 17.4 24.1 32.5 36.5 35.9 36.0 32.6 25.1 20.2 10.4 23.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 3 23 30 30 31 26 5 0 0 148 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 13.5 19.0 29.6 34.0 37.5 40.6 39.6 39.6 37.6 31.0 26.2 18.0 40.6 DAY 24 20 14 29 19 16 30 9 2 5 12 7 DIF. BETWEEN (MAX.-MIN.) (C) 8.2 8.7 13.2 13.5 14.9 14.8 14.6 15.2 17.4 15.8 15.5 10.8 13.5 MEAN DAILY TEMP. (MDT) (C) 2.5 5.2 10.8 17.4 25.1 29.1 28.6 28.4 23.9 17.2 12.5 5.0 17.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 1.3 15.1 128.5 243.2 229.1 229.3 85.3 3.0 0.0 0.0 934.8 HEATING DEG. DAYS(BASE 18 0C) 479.3 359.2 227.2 59.2 0.0 0.0 0.0 0.0 0.0 54.0 166.4 389.6 1734.8 DEWPOINT (MEAN C) -0.3 0.8 -1.3 3.4 8.1 8.5 7.6 6.1 2.0 -1.6 -3.4 -2.9 2.3 MIXING RATIO (G/KG) 4.31 4.66 4.01 5.64 7.88 8.03 7.43 6.86 5.36 4.05 3.43 3.58 5.44 VAPOUR PRESSURE (HPA) 6.16 6.64 5.73 8.01 11.12 11.31 10.48 9.69 7.60 5.79 4.92 5.13 7.71 SATURATION DEF. (HPA) 1.72 3.00 9.86 15.96 27.15 38.21 36.88 37.20 30.16 18.62 12.87 5.08 19.72 RELATIVE HUMIDITY (MEAN %) 81 73 44 39 31 24 23 22 21 27 31 55 39 RELATIVE HUMIDITY (MAX. %) 91 91 73 63 45 34 31 33 32 42 44 71 54 RELATIVE HUMIDITY (MIN. %) 69 58 29 26 24 18 19 17 16 18 23 45 30 RELATIVE HUMIDITY (MEAN% 03UTC) 91 90 72 63 43 33 31 32 32 40 44 70 53 RELATIVE HUMIDITY (MEAN% 09UTC) 74 67 33 29 26 21 21 20 18 21 24 47 33 RELATIVE HUMIDITY (MEAN% 15UTC) 83 71 37 34 28 22 21 19 20 24 31 55 37 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 63.8 38.2 14.1 16.5 1.3 0.0 0.0 0.0 0.0 0.0 0.0 31.0 164.9 DAYS WITH PRECIPITATION >=10 1 1 1 0 0 0 0 0 0 0 0 2 5 DAYS WITH PRECIPITATION >= 5 6 4 1 1 0 0 0 0 0 0 0 2 14 DAYS WITH PRECIPITATION >= 1 9 8 3 3 1 0 0 0 0 0 0 3 27 DAYS WITH PRECIPITATION 15 13 4 6 5 0 0 0 0 0 0 3 46 GREATEST DAILY PRECIPITATION 21.0 11.0 10.0 9.2 1.0 0.0 0.0 0.0 0.0 0.0 0.0 18.0 21.0 DAY 26 11 26 7 12 ** ** ** ** ** ** 22 DAY WITH THUNDER STORM 0 0 0 0 1 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 6 1 2 0 0 0 0 0 0 0 0 0 9 DAYS WITH DUST 0 3 6 2 6 5 5 1 4 2 1 0 35 WIND DIRECTION (PREVAILING) 360 270 90 45 90 135 90 90 90 90 360 360 90 PREVAILING WIND SPEED(KNOTS) 6.0 5.5 7.6 5.4 8.7 11.5 10.8 9.0 8.0 6.9 5.2 6.4 8.4 PREVAILING WIND PERCENT 14.8 19.3 16.1 18.7 29.7 30.0 40.0 46.5 33.3 16.1 13.3 12.9 21.8 CALMS PERCENT OF WIND 62.6 34.3 25.2 14.7 15.5 14.0 16.8 16.1 28.7 39.4 46.0 53.5 30.6 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 29 339 56 2 90 100 94 107 104 50 30 360 81 VECTOR WIND MAGNITUDE(KNOTS) 1.0 2.4 1.3 2.3 4.5 5.8 7.9 6.4 4.6 1.5 1.0 1.4 2.6 WIND STEADINESES (MEAN %) 50.0 57.1 22.4 35.9 57.7 73.4 84.0 85.3 88.5 42.9 38.5 48.3 48.1 WIND SPEED (MEAN KNOTS) 2.0 4.2 5.8 6.4 7.8 7.9 9.4 7.5 5.2 3.5 2.6 2.9 5.4 FASTEST WIND DIRECTION 340 320 250 290 120 110 120 90 120 70 100 50 120 FASTEST WIND SPEED (KNOTS) 14 19 23 23 31 23 27 19 25 21 19 12 31 DAY 12 11 8 14 23 7 5 21 3 15 22 8 DAYS WITH SKY CLEAR (0-2)/8 8 10 21 11 25 28 29 31 30 26 25 16 260 DAYS WITH P.CLOUDY (3-6)/8 12 7 6 15 5 2 2 0 0 5 4 11 69 DAYS WITH CLOUDY (7-8)/8 11 11 4 4 1 0 0 0 0 0 1 4 36 DAYS WITH VISIBILITY =< 2 KM 6 4 3 2 1 0 0 0 0 1 0 2 19 DURATION OF SUNSHINE HOURS 136.4 148.3 270.1 249.0 337.6 359.1 364.0 357.7 326.8 285.1 195.8 194.0 3223.9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 896.2 893.3 895.5 890.9 890.2 887.7 887.2 888.9 891.4 896.1 897.8 896.9 892.7 MAX. QFE PRESSURE IN HPA 904.6 903.6 906.0 897.7 898.8 893.1 892.5 893.2 896.8 906.0 905.7 904.7 906.0 DAY-HOUR 27- 6 8- 6 10- 6 25- 6 16- 6 5- 6 15- 6 3- 6 28- 6 19- 6 23- 6 28- 6 MIN. QFE PRESSURE IN HPA 889.6 882.2 887.8 882.0 878.5 882.1 881.6 883.4 885.6 889.0 889.6 884.6 878.5 DAY-HOUR 2- 3 16- 3 14-15 16- 3 13-12 27-15 4-15 8-15 2-12 2-12 1-12 25-15 MEAN QNH PRESSURE IN HPA 1016.9 1013.6 1016.1 1011.0 1010.3 1007.4 1006.9 1008.8 1011.6 1016.8 1018.7 1017.7 1013.0 MAX. QNH PRESSURE IN HPA 1026.2 1025.1 1027.8 1018.6 1019.8 1013.5 1012.8 1013.6 1017.6 1027.8 1027.4 1026.3 1027.8 DAY-HOUR 27- 6 8- 6 10- 6 25- 6 16- 6 5- 6 15- 6 3- 6 28- 6 19- 6 23- 6 28- 6 MIN. QNH PRESSURE IN HPA 1009.6 1001.4 1007.6 1001.2 997.3 1001.3 1000.7 1002.7 1005.1 1008.9 1009.6 1004.0 997.3 DAY-HOUR 2- 3 16- 3 14-15 16- 3 13-12 27-15 4-15 8-15 2-12 2-12 1-12 25-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 896.1 893.4 896.0 891.3 891.3 888.7 888.4 890.0 892.2 896.5 898.0 897.0 893.2 MAX. QFE PRESSURE IN HPA 903.0 902.4 905.5 896.7 898.5 892.3 892.0 893.0 896.0 905.0 905.0 903.4 905.5 DAY 27 8 10 24 16 8 15 3 28 19 23 29 MIN. QFE PRESSURE IN HPA 889.6 882.2 889.8 882.0 880.4 884.6 884.4 886.5 888.7 892.2 890.2 889.5 880.4 DAY 2 16 25 16 13 27 4 8 2 2 1 26 MEAN QNH PRESSURE IN HPA 1016.7 1013.8 1016.7 1011.5 1011.5 1008.6 1008.2 1010.0 1012.5 1017.3 1018.9 1017.8 1013.6 MAX. QNH PRESSURE IN HPA 1024.4 1023.8 1027.2 1017.4 1019.4 1012.6 1012.2 1013.3 1016.7 1026.6 1026.6 1024.9 1027.2 DAY 27 8 10 24 16 8 15 3 28 19 23 29 MIN. QNH PRESSURE IN HPA 1009.6 1001.4 1009.8 1001.2 999.4 1004.0 1003.8 1006.1 1008.6 1012.5 1010.2 1009.5 999.4 DAY 2 16 25 16 13 27 4 8 2 2 1 26 MEAN QFF PRESSURE IN HPA 1019.8 1015.5 1016.1 1007.5 1004.0 999.2 999.0 1001.2 1005.9 1014.0 1018.1 1019.9 1010.0 MAX. QFF PRESSURE IN HPA 1033.8 1027.2 1027.3 1015.1 1014.3 1005.3 1003.1 1005.3 1011.6 1026.1 1027.3 1029.5 1033.8 DAY 27 8 10 8 16 1 15 30 26 19 23 29 MIN. QFF PRESSURE IN HPA 1010.5 1000.5 1006.7 996.0 989.6 994.1 994.3 996.6 1000.4 1007.8 1007.7 1011.8 989.6 DAY 2 16 25 16 13 28 4 9 2 2 1 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 897.3 894.5 897.0 892.2 891.7 889.0 888.5 890.3 892.9 897.4 899.0 898.0 894.0 MAX. QFE PRESSURE IN HPA 904.6 903.6 906.0 897.7 898.8 893.1 892.5 893.2 896.8 906.0 905.7 904.7 906.0 DAY 27 8 10 25 16 5 15 3 28 19 23 28 MIN. QFE PRESSURE IN HPA 890.5 884.1 890.4 883.7 880.6 885.0 884.3 886.8 889.1 892.6 891.1 890.1 880.6 DAY 2 16 25 16 13 27 4 8 2 2 1 25 MEAN QNH PRESSURE IN HPA 1018.1 1015.0 1017.8 1012.5 1011.9 1009.0 1008.3 1010.3 1013.3 1018.3 1020.0 1018.9 1014.4 MAX. QNH PRESSURE IN HPA 1026.2 1025.1 1027.8 1018.6 1019.8 1013.5 1012.8 1013.6 1017.6 1027.8 1027.4 1026.3 1027.8 DAY 27 8 10 25 16 5 15 3 28 19 23 28 MIN. QNH PRESSURE IN HPA 1010.6 1003.5 1010.5 1003.0 999.6 1004.5 1003.7 1006.5 1009.0 1012.9 1011.2 1010.1 999.6 DAY 2 16 25 16 13 27 4 8 2 2 1 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 896.2 893.3 895.7 891.1 890.4 887.9 887.3 889.2 891.6 896.0 897.7 896.8 892.8 MAX. QFE PRESSURE IN HPA 903.4 902.4 904.7 896.8 897.2 891.2 891.5 892.0 895.0 904.5 904.4 903.4 904.7 DAY 27 8 10 25 16 5 15 3 28 19 23 28 MIN. QFE PRESSURE IN HPA 889.9 884.1 889.4 883.2 878.8 883.9 883.5 885.5 887.5 890.6 889.8 886.2 878.8 DAY 2 16 25 16 13 27 5 8 2 2 1 25 MEAN QNH PRESSURE IN HPA 1016.9 1013.7 1016.3 1011.2 1010.4 1007.7 1007.0 1009.1 1011.8 1016.7 1018.5 1017.5 1013.1 MAX. QNH PRESSURE IN HPA 1024.9 1023.8 1026.3 1017.6 1018.0 1011.4 1011.7 1012.2 1015.6 1026.1 1026.0 1024.9 1026.3 DAY 27 8 10 25 16 5 15 3 28 19 23 28 MIN. QNH PRESSURE IN HPA 1009.9 1003.5 1009.4 1002.5 997.6 1003.3 1002.8 1005.0 1007.3 1010.7 1009.8 1005.8 997.6 DAY 2 16 25 16 13 27 5 8 2 2 1 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 895.4 892.1 894.2 889.7 888.8 886.4 885.9 887.6 890.2 895.0 896.8 896.0 891.5 MAX. QFE PRESSURE IN HPA 902.4 900.9 902.4 895.2 895.3 889.9 890.1 890.7 893.6 903.2 903.6 903.0 903.6 DAY 26 8 10 24 16 1 15 2 27 19 23 28 MIN. QFE PRESSURE IN HPA 889.9 883.9 888.8 883.0 878.5 882.5 882.0 883.7 885.6 889.0 889.6 884.8 878.5 DAY 2 16 14 16 13 27 4 8 2 2 1 25 MEAN QNH PRESSURE IN HPA 1016.0 1012.4 1014.6 1009.7 1008.7 1006.1 1005.5 1007.4 1010.2 1015.6 1017.6 1016.7 1011.7 MAX. QNH PRESSURE IN HPA 1023.8 1022.1 1023.8 1015.8 1015.9 1009.9 1010.1 1010.8 1014.0 1024.6 1025.1 1024.4 1025.1 DAY 26 8 10 24 16 1 15 2 27 19 23 28 MIN. QNH PRESSURE IN HPA 1009.9 1003.3 1008.7 1002.3 997.3 1001.7 1001.2 1003.0 1005.1 1008.9 1009.6 1004.3 997.3 DAY 2 16 14 16 13 27 4 8 2 2 1 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 896.2 893.0 894.7 890.1 889.0 886.3 885.9 887.4 890.3 895.6 897.6 896.8 891.9 MAX. QFE PRESSURE IN HPA 903.0 901.8 902.5 895.7 895.3 890.2 890.3 890.3 894.3 903.1 905.0 903.4 905.0 DAY 26 8 10 3 15 1 15 2 27 15 22 28 MIN. QFE PRESSURE IN HPA 890.9 885.2 887.8 882.3 881.8 882.1 881.6 883.4 886.0 889.9 890.1 884.6 881.6 DAY 17 15 14 15 12 27 4 8 2 14 1 25 MEAN QNH PRESSURE IN HPA 1016.9 1013.3 1015.2 1010.2 1009.0 1005.9 1005.5 1007.1 1010.4 1016.2 1018.5 1017.6 1012.1 MAX. QNH PRESSURE IN HPA 1024.4 1023.1 1023.9 1016.3 1015.9 1010.2 1010.4 1010.4 1014.8 1024.5 1026.6 1024.9 1026.6 DAY 26 8 10 3 15 1 15 2 27 15 22 28 MIN. QNH PRESSURE IN HPA 1011.0 1004.7 1007.6 1001.5 1000.9 1001.3 1000.7 1002.7 1005.6 1009.9 1010.1 1004.0 1000.7 DAY 17 15 14 15 12 27 4 8 2 14 1 25 MEAN QFF PRESSURE IN HPA 1020.0 1014.9 1014.6 1006.1 1001.4 996.4 996.2 998.3 1003.7 1012.9 1017.7 1019.8 1008.5 MAX. QFF PRESSURE IN HPA 1031.5 1026.4 1024.6 1012.5 1010.5 1003.1 1000.9 1002.1 1009.8 1024.3 1026.9 1029.5 1031.5 DAY 27 8 10 3 15 1 15 30 27 19 22 28 MIN. QFF PRESSURE IN HPA 1013.0 1005.1 1002.3 996.1 991.8 990.8 991.1 993.2 997.5 1005.2 1008.0 1006.0 990.8 DAY 1 15 14 15 12 27 4 8 2 2 1 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 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.7 5.4 10.4 19.5 24.1 30.3 31.6 28.6 23.6 16.6 11.0 6.7 17.7 MINIMUN AIR TEMPERATURE (C) -0.5 -0.2 5.4 11.3 15.0 19.8 21.2 18.6 15.1 9.1 4.1 2.3 10.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 2 11 12 9 3 0 0 0 37 DAYS WITH MINIMUM TEMP. <=-4 5 4 0 0 0 0 0 0 0 0 0 0 9 DAYS WITH FREEZING MIN.<= 0 22 15 3 0 0 0 0 0 0 0 3 12 55 TEMPERATURE RECORDS LOWEST(C) -5.6 -11.2 -2.0 4.4 9.0 13.4 19.0 12.4 6.2 3.8 -2.8 -3.6 -11.2 DAY 2 14 12 15 8 25 2 23 29 15 29 20 MAXIMUM AIR TEMPERATURE (C) 8.3 9.2 14.2 24.0 28.8 34.5 36.1 34.7 30.7 24.0 17.8 11.1 22.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 5 11 28 31 31 21 0 0 0 127 DAYS WITH MAXIMUM TEMP. <= 0 0 1 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS HIGHEST(C) 14.0 16.4 20.6 31.6 39.6 39.8 42.8 39.8 38.0 27.2 25.6 21.2 42.8 DAY 31 1 30 25 31 3 8 6 9 27 4 10 DIF. BETWEEN (MAX.-MIN.) (C) 8.8 9.4 8.8 12.7 13.8 14.7 14.9 16.1 15.6 14.9 13.7 8.8 12.7 MEAN DAILY TEMP. (MDT) (C) 3.9 4.5 9.8 17.6 21.9 27.2 28.7 26.7 22.9 16.6 10.9 6.7 16.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 12.4 60.2 185.3 237.4 176.0 91.5 0.0 0.0 0.0 762.9 HEATING DEG. DAYS(BASE 18 0C) 436.9 378.6 254.9 53.7 10.5 0.0 0.0 0.0 17.0 48.2 212.4 342.3 1754.5 DEWPOINT (MEAN C) -1.9 -3.6 1.8 1.5 2.9 4.2 6.3 1.3 1.4 -2.3 -3.8 -2.0 0.5 MIXING RATIO (G/KG) 3.88 3.51 5.15 5.02 5.50 5.89 6.86 4.94 4.93 3.76 3.39 3.93 4.73 VAPOUR PRESSURE (HPA) 5.54 5.02 7.32 7.14 7.79 8.33 9.66 6.99 7.02 5.38 4.87 5.61 6.72 SATURATION DEF. (HPA) 3.22 4.47 5.76 16.72 23.84 36.05 38.16 33.93 24.25 14.46 9.12 4.71 17.89 RELATIVE HUMIDITY (MEAN %) 66 58 59 35 28 20 21 18 26 29 38 58 38 RELATIVE HUMIDITY (MAX. %) 89 82 85 60 45 30 29 25 36 39 53 78 54 RELATIVE HUMIDITY (MIN. %) 49 41 41 23 19 15 17 13 18 21 27 39 27 RELATIVE HUMIDITY (MEAN% 03UTC) 89 78 85 59 43 30 28 25 33 37 51 69 52 RELATIVE HUMIDITY (MEAN% 09UTC) 55 48 47 27 24 17 19 16 21 23 31 47 31 RELATIVE HUMIDITY (MEAN% 15UTC) 62 56 52 29 24 17 20 15 21 24 34 56 34 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 22.3 48.0 88.4 21.5 4.1 0.0 0.0 0.0 0.0 0.6 3.7 39.7 228.3 DAYS WITH PRECIPITATION >=10 0 1 3 1 0 0 0 0 0 0 0 2 7 DAYS WITH PRECIPITATION >= 5 0 4 6 2 0 0 0 0 0 0 0 3 15 DAYS WITH PRECIPITATION >= 1 9 5 9 3 1 0 0 0 0 0 2 7 36 DAYS WITH PRECIPITATION 11 8 17 10 7 0 0 0 0 2 3 11 69 GREATEST DAILY PRECIPITATION 4.0 24.0 22.0 11.0 2.2 0.0 0.0 0.0 0.0 0.6 2.6 14.0 24.0 DAY 23 22 27 1 7 ** ** ** ** 5 15 14 DAY WITH THUNDER STORM 0 0 0 1 3 0 0 0 0 0 0 2 6 DAYS WITH SNOW OR SLEET 3 3 0 0 0 0 0 0 0 0 0 0 6 DAYS WITH DUST 0 0 0 0 6 1 5 3 4 0 0 0 19 WIND DIRECTION (PREVAILING) 90 90 90 90 90 90 90 90 135 360 270 225 90 PREVAILING WIND SPEED(KNOTS) 4.9 7.0 7.9 6.5 7.1 8.6 8.8 7.5 9.0 5.3 3.5 5.7 7.4 PREVAILING WIND PERCENT 14.2 15.0 31.6 18.7 15.5 38.7 41.3 31.4 21.7 8.5 7.0 6.2 18.4 CALMS PERCENT OF WIND 49.7 41.4 33.5 26.0 28.4 14.0 14.8 27.1 42.6 51.6 71.6 63.9 41.0 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 188 235 246 215 227 2171 VECTOR WIND DIRECTION (MEAN) 22 45 77 22 41 85 90 111 115 81 316 310 82 VECTOR WIND MAGNITUDE(KNOTS) 1.5 1.0 2.7 2.0 0.7 5.2 6.2 4.8 2.7 0.1 0.2 0.5 1.9 WIND STEADINESES (MEAN %) 53.6 27.0 54.0 38.5 12.7 76.5 81.6 85.7 62.8 4.0 15.4 23.8 43.2 WIND SPEED (MEAN KNOTS) 2.8 3.7 5.0 5.2 5.5 6.8 7.6 5.6 4.3 2.5 1.3 2.1 4.4 FASTEST WIND DIRECTION 310 280 270 280 240 90 120 120 130 330 230 340 240 FASTEST WIND SPEED (KNOTS) 16 16 19 19 23 19 23 23 21 19 23 19 23 DAY 15 5 7 11 23 4 9 8 11 9 6 6 DAYS WITH SKY CLEAR (0-2)/8 15 8 3 17 15 29 31 31 29 25 21 11 235 DAYS WITH P.CLOUDY (3-6)/8 11 10 19 11 12 1 0 0 1 5 8 13 91 DAYS WITH CLOUDY (7-8)/8 5 10 9 2 4 0 0 0 0 1 1 7 39 DAYS WITH VISIBILITY =< 2 KM 4 4 2 0 1 0 1 0 0 0 0 0 12 DURATION OF SUNSHINE HOURS 169.2 151.4 153.2 262.5 281.9 353.3 368.9 359.6 315.9 271.8 224.7 127.2 3039.6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 896.1 895.9 893.0 892.5 888.7 888.1 886.6 888.4 893.1 896.8 897.9 895.1 892.7 MAX. QFE PRESSURE IN HPA 904.6 908.5 900.8 899.0 894.7 895.0 891.6 893.1 899.4 900.6 903.3 902.8 908.5 DAY-HOUR 13- 6 15- 6 12- 9 15- 6 9- 3 24- 6 1- 6 22- 6 30- 6 13- 6 24- 6 18- 6 MIN. QFE PRESSURE IN HPA 884.3 888.0 881.7 883.7 880.2 879.8 880.0 882.6 885.8 892.1 890.1 885.3 879.8 DAY-HOUR 26- 3 1-12 7- 3 10-15 23- 3 12-15 8-15 12-12 3-12 5- 0 6-12 26- 0 MEAN QNH PRESSURE IN HPA 1016.8 1016.5 1013.3 1012.8 1008.6 1007.9 1006.2 1008.3 1013.4 1017.5 1018.8 1015.7 1013.0 MAX. QNH PRESSURE IN HPA 1026.2 1030.5 1022.0 1020.0 1015.2 1015.6 1011.8 1013.5 1020.4 1021.8 1024.8 1024.2 1030.5 DAY-HOUR 13- 6 15- 6 12- 9 15- 6 9- 3 24- 6 1- 6 22- 6 30- 6 13- 6 24- 6 18- 6 MIN. QNH PRESSURE IN HPA 1003.7 1007.8 1000.8 1003.0 999.2 998.7 998.9 1001.8 1005.4 1012.3 1010.1 1004.8 998.7 DAY-HOUR 26- 3 1-12 7- 3 10-15 23- 3 12-15 8-15 12-12 3-12 5- 0 6-12 26- 0 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 1000.5 1006.7 1013.8 1018.0 1016.3 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 1006.5 1017.7 1019.3 1025.9 1027.3 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** 22- 3 28- 6 14- 3 24- 6 18- 6 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 993.3 997.7 1007.1 1005.7 1005.4 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** 12-15 3-12 4-12 6-12 26- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 892.9 896.4 897.6 894.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 897.9 899.0 901.8 902.0 ****** DAY ** ** ** ** ** ** ** ** 29 14 24 18 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 888.1 892.1 891.2 885.3 ****** DAY ** ** ** ** ** ** ** ** 4 5 6 26 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1013.2 1017.1 1018.5 1015.2 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1018.8 1020.0 1023.1 1023.3 ****** DAY ** ** ** ** ** ** ** ** 29 14 24 18 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1007.9 1012.3 1011.4 1004.8 ****** DAY ** ** ** ** ** ** ** ** 4 5 6 26 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1006.4 1013.2 1016.9 1015.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1016.6 1018.0 1023.7 1026.6 ****** DAY ** ** ** ** ** ** ** ** 29 14 24 18 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 998.9 1007.2 1007.2 1005.4 ****** DAY ** ** ** ** ** ** ** ** 8 5 6 26 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 896.0 895.9 893.2 892.9 889.2 889.1 887.7 889.1 893.7 897.2 898.2 895.0 893.1 MAX. QFE PRESSURE IN HPA 903.5 906.4 899.5 898.1 894.7 894.9 891.4 892.4 898.2 899.6 902.1 902.0 906.4 DAY 13 15 12 16 9 24 1 22 17 1 24 18 MIN. QFE PRESSURE IN HPA 884.3 889.4 881.7 886.1 880.2 881.9 882.6 884.9 889.0 893.4 891.7 886.5 880.2 DAY 26 4 7 11 23 13 8 12 3 5 5 26 MEAN QNH PRESSURE IN HPA 1016.6 1016.5 1013.5 1013.3 1009.1 1009.1 1007.5 1009.0 1014.1 1018.0 1019.1 1015.6 1013.4 MAX. QNH PRESSURE IN HPA 1025.0 1028.2 1020.5 1019.0 1015.2 1015.5 1011.6 1012.7 1019.1 1020.7 1023.4 1023.3 1028.2 DAY 13 15 12 16 9 24 1 22 17 1 24 18 MIN. QNH PRESSURE IN HPA 1003.7 1009.4 1000.8 1005.7 999.2 1001.0 1001.8 1004.4 1008.9 1013.8 1011.9 1006.1 999.2 DAY 26 4 7 11 23 13 8 12 3 5 5 26 MEAN QFF PRESSURE IN HPA 1019.2 1018.7 1013.1 1009.3 1003.0 1000.4 998.4 1001.0 1008.0 1015.1 1018.8 1016.8 1010.2 MAX. QFF PRESSURE IN HPA 1029.2 1034.9 1023.7 1018.0 1010.7 1008.5 1002.8 1006.5 1017.7 1019.3 1025.2 1027.2 1034.9 DAY 13 15 12 14 9 24 22 22 29 14 29 18 MIN. QFF PRESSURE IN HPA 1003.7 1009.0 999.3 1000.1 990.9 990.6 992.0 996.3 1000.7 1008.7 1009.5 1007.7 990.6 DAY 26 21 7 11 23 13 8 12 8 5 5 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 897.2 896.9 894.1 893.7 889.7 889.5 887.9 889.5 894.4 898.1 899.1 896.3 893.9 MAX. QFE PRESSURE IN HPA 904.6 908.5 900.5 899.0 894.7 895.0 891.6 893.1 899.4 900.6 903.3 902.8 908.5 DAY 13 15 12 15 9 24 1 22 30 13 24 18 MIN. QFE PRESSURE IN HPA 885.7 890.7 883.8 886.4 880.6 882.7 882.2 885.2 889.0 894.4 892.5 889.4 880.6 DAY 26 8 7 10 23 13 14 12 3 4 5 26 MEAN QNH PRESSURE IN HPA 1018.0 1017.7 1014.6 1014.1 1009.7 1009.4 1007.7 1009.4 1014.9 1019.0 1020.1 1017.0 1014.3 MAX. QNH PRESSURE IN HPA 1026.2 1030.5 1021.7 1020.0 1015.2 1015.6 1011.8 1013.5 1020.4 1021.8 1024.8 1024.2 1030.5 DAY 13 15 12 15 9 24 1 22 30 13 24 18 MIN. QNH PRESSURE IN HPA 1005.3 1010.8 1003.2 1006.0 999.6 1001.9 1001.4 1004.7 1008.9 1014.9 1012.8 1009.4 999.6 DAY 26 8 7 10 23 13 14 12 3 4 5 26 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1008.0 1015.1 1019.0 1017.8 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1017.7 1018.6 1025.9 1027.3 ****** DAY ** ** ** ** ** ** ** ** 28 14 24 18 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1000.6 1010.1 1009.6 1010.8 ****** DAY ** ** ** ** ** ** ** ** 3 4 5 26 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 895.9 896.0 893.1 892.7 888.9 888.2 886.8 888.5 893.2 896.8 897.7 895.1 892.7 MAX. QFE PRESSURE IN HPA 903.3 908.1 900.8 898.1 894.1 893.5 890.7 892.4 898.8 899.3 902.0 901.6 908.1 DAY 12 15 12 15 8 24 1 22 30 20 13 7 MIN. QFE PRESSURE IN HPA 885.5 889.2 882.5 884.9 882.1 881.7 881.0 884.1 887.3 893.4 890.9 889.7 881.0 DAY 26 4 7 10 22 12 14 12 3 4 6 26 MEAN QNH PRESSURE IN HPA 1016.6 1016.6 1013.5 1013.0 1008.8 1008.0 1006.5 1008.3 1013.6 1017.5 1018.6 1015.6 1013.1 MAX. QNH PRESSURE IN HPA 1024.8 1030.1 1022.0 1019.0 1014.6 1013.9 1010.8 1012.7 1019.8 1020.3 1023.3 1022.9 1030.1 DAY 12 15 12 15 8 24 1 22 30 20 13 7 MIN. QNH PRESSURE IN HPA 1005.0 1009.1 1001.7 1004.4 1001.3 1000.8 1000.0 1003.5 1007.0 1013.8 1011.0 1009.7 1000.0 DAY 26 4 7 10 22 12 14 12 3 4 6 26 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1006.5 1013.3 ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1016.2 1017.0 ****** ****** ****** DAY ** ** ** ** ** ** ** ** 30 14 ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 998.3 1008.9 ****** ****** ****** DAY ** ** ** ** ** ** ** ** 3 4 ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 895.3 894.9 892.1 891.6 887.9 887.0 885.4 887.1 891.9 895.9 896.9 894.4 891.7 MAX. QFE PRESSURE IN HPA 902.5 907.0 899.9 897.2 893.0 892.0 889.1 891.0 897.9 898.6 901.2 901.1 907.0 DAY 13 15 12 15 8 24 1 9 30 21 13 17 MIN. QFE PRESSURE IN HPA 886.3 888.0 883.7 884.1 881.6 880.5 880.0 882.6 885.8 892.4 890.1 888.0 880.0 DAY 26 1 7 10 22 12 14 12 3 4 6 1 MEAN QNH PRESSURE IN HPA 1015.9 1015.5 1012.3 1011.8 1007.7 1006.7 1004.9 1006.8 1012.1 1016.5 1017.7 1014.9 1011.9 MAX. QNH PRESSURE IN HPA 1023.9 1028.9 1021.0 1018.0 1013.3 1012.2 1009.0 1011.1 1018.8 1019.6 1022.4 1022.3 1028.9 DAY 13 15 12 15 8 24 1 9 30 21 13 17 MIN. QNH PRESSURE IN HPA 1005.9 1007.8 1003.0 1003.5 1000.7 999.5 998.9 1001.8 1005.4 1012.7 1010.1 1007.8 998.9 DAY 26 1 7 10 22 12 14 12 3 4 6 1 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1005.3 1012.5 1016.2 1015.3 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1015.9 1016.2 1022.8 1024.2 ****** DAY ** ** ** ** ** ** ** ** 28 13 24 17 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 997.7 1007.1 1005.7 1006.4 ****** DAY ** ** ** ** ** ** ** ** 3 4 6 1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 896.2 895.6 892.6 891.8 888.0 886.9 885.2 887.0 892.1 896.4 897.6 895.2 892.0 MAX. QFE PRESSURE IN HPA 903.5 907.0 900.6 897.6 893.0 891.8 888.9 890.9 898.2 899.1 901.9 902.2 907.0 DAY 12 15 12 15 8 24 1 31 30 21 13 17 MIN. QFE PRESSURE IN HPA 887.1 889.1 883.2 883.7 881.6 879.8 880.0 882.8 885.8 892.6 891.1 889.0 879.8 DAY 25 4 7 10 22 12 8 12 3 4 5 1 MEAN QNH PRESSURE IN HPA 1016.8 1016.2 1012.9 1012.0 1007.8 1006.6 1004.7 1006.7 1012.3 1017.1 1018.4 1015.8 1012.3 MAX. QNH PRESSURE IN HPA 1025.0 1028.9 1021.8 1018.4 1013.3 1012.0 1008.8 1011.0 1019.1 1020.1 1023.2 1023.5 1028.9 DAY 12 15 12 15 8 24 1 31 30 21 13 17 MIN. QNH PRESSURE IN HPA 1006.8 1009.0 1002.5 1003.0 1000.7 998.7 998.9 1002.0 1005.4 1012.9 1011.2 1008.9 998.7 DAY 25 4 7 10 22 12 8 12 3 4 5 1 MEAN QFF PRESSURE IN HPA 1019.3 1018.4 1012.4 1008.0 1001.7 997.9 995.5 998.6 1006.2 1014.1 1018.1 1017.0 1009.0 MAX. QFF PRESSURE IN HPA 1029.1 1035.3 1024.9 1017.4 1009.6 1005.3 1000.8 1004.6 1017.3 1017.6 1024.4 1026.3 1035.3 DAY 12 15 12 15 8 24 21 22 28 13 24 17 MIN. QFF PRESSURE IN HPA 1008.0 1008.9 1002.0 998.5 993.2 989.0 988.4 993.3 997.9 1008.0 1009.0 1009.4 988.4 DAY 25 4 7 10 22 12 8 12 3 4 5 1 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 893.3 896.9 898.0 895.2 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 899.2 899.5 902.1 902.4 ****** DAY ** ** ** ** ** ** ** ** 30 13 13 17 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 887.3 893.0 892.2 887.0 ****** DAY ** ** ** ** ** ** ** ** 3 4 5 25 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1013.7 1017.7 1018.9 1015.8 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1020.2 1020.5 1023.4 1023.8 ****** DAY ** ** ** ** ** ** ** ** 30 13 13 17 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1007.0 1013.3 1012.5 1006.7 ****** DAY ** ** ** ** ** ** ** ** 3 4 5 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1006.8 1013.8 1017.9 1016.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1016.9 1017.8 1024.8 1026.8 ****** DAY ** ** ** ** ** ** ** ** 28 13 24 17 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 999.0 1008.6 1009.1 1008.8 ****** DAY ** ** ** ** ** ** ** ** 3 4 5 25 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 893.2 896.7 ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 899.2 899.3 ****** ****** ****** DAY ** ** ** ** ** ** ** ** 27 13 ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 887.5 892.7 ****** ****** ****** DAY ** ** ** ** ** ** ** ** 3 4 ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1013.6 1017.5 ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1020.2 1020.3 ****** ****** ****** DAY ** ** ** ** ** ** ** ** 27 13 ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1007.3 1013.0 ****** ****** ****** DAY ** ** ** ** ** ** ** ** 3 4 ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1006.4 1013.3 ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1017.4 1017.6 ****** ****** ****** DAY ** ** ** ** ** ** ** ** 27 13 ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 998.9 1007.9 ****** ****** ****** DAY ** ** ** ** ** ** ** ** 7 4 ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION GONABAD (40778) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 21 N LONGITUDE 58 41 E DATA PROCESSING CENTER ELEVATION 1056.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.1 6.0 7.2 15.4 ***** 28.9 29.7 27.9 23.4 16.1 11.6 5.9 ***** MINIMUN AIR TEMPERATURE (C) -1.6 1.2 2.0 9.7 ***** 21.2 20.6 18.6 13.1 8.1 4.9 2.3 ***** DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 **** 16 13 7 0 0 0 0 **** DAYS WITH MINIMUM TEMP. <=-4 9 2 2 0 **** 0 0 0 0 0 0 1 **** DAYS WITH FREEZING MIN.<= 0 20 15 11 0 **** 0 0 0 0 0 2 6 **** TEMPERATURE RECORDS LOWEST(C) -13.0 -5.8 -4.4 4.0 ***** 17.0 16.6 13.4 8.8 0.6 -3.2 -4.0 ***** DAY 30 17 12 4 ** 11 17 16 14 19 29 29 MAXIMUM AIR TEMPERATURE (C) 6.6 11.9 12.9 22.1 ***** 34.7 35.8 32.3 29.5 24.1 19.0 10.0 ***** DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 **** 30 31 26 12 0 0 0 **** DAYS WITH MAXIMUM TEMP. <= 0 4 0 0 0 **** 0 0 0 0 0 0 0 **** TEMPERATURE RECORDS HIGHEST(C) 17.4 24.4 23.6 29.0 ***** 39.4 39.4 36.8 36.6 29.4 24.6 16.6 ***** DAY 3 25 30 14 ** 19 6 25 25 12 13 28 DIF. BETWEEN (MAX.-MIN.) (C) 8.2 10.7 10.9 12.4 ***** 13.5 15.2 13.7 16.4 16.0 14.1 7.7 ***** MEAN DAILY TEMP. (MDT) (C) 2.5 6.5 7.5 15.9 ***** 28.0 28.2 25.4 21.3 16.1 12.0 6.2 ***** COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.2 ****** 208.9 223.0 137.7 34.0 0.0 0.0 0.0 ****** HEATING DEG. DAYS(BASE 18 0C) 480.6 334.1 326.4 64.5 ****** 0.0 0.0 0.0 1.3 70.3 180.1 366.2 ****** DEWPOINT (MEAN C) -4.1 -5.3 -4.7 3.1 ***** 8.1 7.4 8.1 3.4 -2.6 -5.9 1.5 ***** MIXING RATIO (G/KG) 3.37 3.02 3.30 5.52 ****** 7.75 7.45 7.77 5.64 3.72 2.99 4.99 ****** VAPOUR PRESSURE (HPA) 4.81 4.31 4.70 7.83 ****** 10.93 10.50 10.98 8.02 5.32 4.29 7.12 ****** SATURATION DEF. (HPA) 2.72 5.76 5.97 10.67 ****** 30.19 32.66 28.02 22.28 14.27 10.34 2.36 ****** RELATIVE HUMIDITY (MEAN %) 67 49 48 49 *** 29 25 30 28 31 33 77 *** RELATIVE HUMIDITY (MAX. %) 86 71 76 74 *** 40 33 39 38 45 50 89 *** RELATIVE HUMIDITY (MIN. %) 43 29 25 28 *** 21 20 25 23 19 18 62 *** RELATIVE HUMIDITY (MEAN% 03UTC) 78 63 68 68 *** 39 33 39 38 42 45 85 *** RELATIVE HUMIDITY (MEAN% 09UTC) 50 36 32 36 *** 24 23 27 25 23 23 67 *** RELATIVE HUMIDITY (MEAN% 15UTC) 64 39 37 35 *** 24 21 26 24 27 31 76 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 30.8 14.5 23.4 31.7 ****** 0.8 0.0 0.0 0.0 0.0 3.1 27.9 ****** DAYS WITH PRECIPITATION >=10 1 0 0 1 **** 0 0 0 0 0 0 0 **** DAYS WITH PRECIPITATION >= 5 1 1 2 1 **** 0 0 0 0 0 0 2 **** DAYS WITH PRECIPITATION >= 1 7 4 6 7 **** 0 0 0 0 0 1 7 **** DAYS WITH PRECIPITATION 16 10 11 13 **** 4 0 0 0 0 3 12 **** GREATEST DAILY PRECIPITATION 10.0 5.0 5.0 17.0 ****** 0.7 0.0 0.0 0.0 0.0 3.0 7.2 ****** DAY 25 28 18 3 **