IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 1 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. AVERAGE OF MEAN DAILY TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MAX-MIN 1996 ****** ****** 3.1 11.1 17.0 21.6 23.9 23.0 20.6 11.8 5.3 2.4 ****** 1997 0.9 0.7 4.7 12.7 16.9 22.7 26.2 24.9 19.7 15.4 6.5 2.2 25.5 1998 -0.9 0.6 7.0 14.4 17.1 22.6 24.1 24.0 20.0 14.1 9.8 5.8 25.0 1999 1.2 4.8 6.4 12.1 18.0 23.2 22.0 23.5 19.8 14.5 5.6 2.9 22.3 2000 0.3 1.7 6.4 15.9 20.1 21.6 23.6 24.2 21.2 13.0 5.6 2.4 23.9 2001 0.3 2.9 9.0 15.7 18.7 22.1 23.3 23.9 20.2 14.4 7.8 3.3 23.6 2002 1.0 4.0 8.7 11.6 16.9 22.1 23.8 24.9 21.6 17.0 7.6 -1.2 26.1 2003 1.3 3.2 6.0 ****** ****** 21.7 26.4 23.3 19.2 16.6 6.6 0.7 ****** MEAN 0.6 2.5 6.4 13.4 17.8 22.2 24.1 24.0 20.3 14.6 6.9 2.3 23.5 SD 0.75 1.63 1.92 1.97 1.21 0.60 1.48 0.70 0.79 1.74 1.51 2.02 1.36 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 2 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. AVERAGE OF MINIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 ****** ****** -1.5 4.5 9.7 13.3 16.0 14.5 11.9 3.6 -2.1 -5.4 ****** 1997 -5.7 -6.7 -2.3 5.3 9.1 15.1 18.7 16.4 11.5 7.8 0.2 -2.8 5.6 1998 -5.3 -4.5 1.0 7.4 9.4 14.6 17.3 16.3 12.1 6.5 2.6 -0.4 6.4 1999 -4.3 -2.2 -0.4 4.5 9.9 15.0 14.8 15.6 11.2 6.5 -0.0 -3.5 5.6 2000 -5.9 -3.9 -0.8 7.5 11.2 13.3 15.6 16.0 13.6 6.2 -0.0 -2.1 5.9 2001 -5.2 -4.0 1.8 7.7 10.3 14.1 16.0 15.6 12.3 7.0 1.1 -2.0 6.2 2002 -4.5 -2.4 0.8 5.3 9.0 13.8 16.5 17.2 12.7 9.2 0.9 -5.9 6.1 2003 -4.5 -1.9 -0.2 ****** ****** 13.7 19.1 15.4 11.5 8.3 0.0 -4.7 ****** MEAN -5.1 -3.7 -0.2 6.0 9.8 14.1 16.7 15.9 12.1 6.9 0.3 -3.3 5.8 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 3 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. AVERAGE OF MAXIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 ****** ****** 7.8 17.7 24.3 29.8 31.8 31.5 29.2 20.0 12.7 10.1 ****** 1997 7.5 8.0 11.7 20.1 24.7 30.3 33.7 33.5 27.9 23.1 12.8 7.2 20.0 1998 3.6 5.7 13.1 21.5 24.8 30.6 31.0 31.7 28.0 21.7 17.0 12.0 20.1 1999 6.6 11.8 13.1 19.7 26.1 31.4 29.1 31.4 28.4 22.6 11.2 9.4 20.1 2000 6.5 7.3 13.5 24.3 29.0 30.0 31.5 32.4 28.8 19.7 11.3 6.9 20.1 2001 5.8 9.8 16.1 23.7 27.0 30.1 30.5 32.1 28.1 21.8 14.5 8.5 20.7 2002 6.5 10.4 16.5 17.9 24.9 30.4 31.0 32.5 30.5 24.8 14.4 3.6 20.3 2003 7.0 8.3 12.2 ****** ****** 29.6 33.7 31.1 27.0 24.9 13.1 6.1 ****** MEAN 6.2 8.7 13.0 20.7 25.8 30.3 31.5 32.0 28.5 22.3 13.4 8.0 20.0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 4 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. DIFFERENCE BETWEEN AVERAGE MAXIMUM AND MINIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 ****** ****** 9.3 13.2 14.6 16.5 15.8 17.0 17.3 16.4 14.8 15.5 ****** 1997 13.2 14.7 14.0 14.8 15.6 15.2 15.0 17.1 16.4 15.3 12.6 10.0 14.5 1998 8.9 10.2 12.1 14.1 15.4 16.0 13.7 15.4 15.9 15.2 14.4 12.4 13.6 1999 10.9 14.0 13.5 15.2 16.2 16.4 14.3 15.8 17.2 16.1 11.2 12.9 14.5 2000 12.4 11.2 14.3 16.8 17.8 16.8 15.9 16.4 15.2 13.5 11.3 9.0 14.2 2001 11.0 13.8 14.3 16.0 16.7 16.0 14.5 16.5 15.8 14.8 13.4 10.5 14.4 2002 11.0 12.8 15.7 12.6 15.9 16.6 14.5 15.3 17.8 15.6 13.5 9.5 14.2 2003 11.5 10.1 12.4 ****** ****** 15.9 14.6 15.7 15.5 16.6 13.1 10.8 ****** MEAN 11.3 12.4 13.2 14.7 16.0 16.2 14.8 16.1 16.4 15.4 13.0 11.3 14.2 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 5 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 03 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 ****** ****** 3.51 5.36 7.78 9.02 10.11 9.65 7.92 5.55 3.45 2.60 ****** 1997 2.53 2.21 3.46 4.90 6.72 9.69 11.00 9.40 7.14 5.73 4.19 3.44 5.87 1998 2.61 2.91 4.58 6.21 7.54 10.62 11.05 11.18 8.39 5.82 4.58 3.79 6.61 1999 2.97 3.35 3.87 5.08 6.94 10.34 10.93 11.41 8.77 6.26 4.23 3.13 6.44 2000 2.45 3.00 3.69 6.03 7.29 8.28 9.46 9.33 8.15 6.00 3.94 3.58 5.93 2001 2.71 2.88 4.36 6.57 8.29 9.87 8.87 9.21 6.84 6.36 3.97 3.57 6.12 2002 2.80 3.31 3.87 5.83 6.90 7.45 8.65 9.68 6.53 6.03 4.34 2.54 5.66 2003 2.80 3.57 4.21 ****** ****** 8.38 10.44 9.08 7.60 5.77 3.91 2.88 ****** MEAN 2.70 3.04 3.95 5.71 7.36 9.21 10.07 9.87 7.67 5.95 4.08 3.20 6.06 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 6 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 09 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 ****** ****** 4.45 6.19 8.78 10.43 12.22 12.45 11.25 7.18 4.47 3.74 ****** 1997 3.82 3.99 4.86 6.01 6.68 9.40 11.21 10.32 7.44 6.82 5.30 4.83 6.72 1998 3.71 3.79 5.34 7.42 8.34 10.70 10.71 12.14 10.38 7.57 6.73 4.76 7.63 1999 4.16 4.22 4.49 4.64 7.87 12.84 10.91 13.66 10.83 7.21 5.17 4.05 7.50 2000 3.35 3.78 4.28 5.59 6.97 7.52 9.08 9.21 7.92 6.43 4.94 4.39 6.12 2001 3.68 3.27 3.96 6.55 8.52 11.01 8.32 9.19 6.78 6.73 3.70 4.28 6.33 2002 3.67 3.58 3.93 6.21 6.78 7.34 8.08 9.44 7.31 6.45 4.44 3.42 5.89 2003 4.26 4.80 5.82 ****** ****** 7.86 10.11 8.69 7.89 6.26 4.85 4.61 ****** MEAN 3.81 3.92 4.65 6.09 7.71 9.64 10.09 10.64 8.73 6.84 4.96 4.26 6.77 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 7 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 15 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 ****** ****** 3.92 5.36 8.17 9.69 10.72 10.75 9.79 6.30 3.91 3.25 ****** 1997 3.12 3.19 3.85 5.35 6.42 9.41 10.37 10.88 8.23 6.78 4.85 4.43 6.41 1998 3.27 3.64 4.97 6.75 7.77 11.20 11.30 11.95 9.47 6.73 5.76 4.46 7.27 1999 3.81 3.98 4.20 5.23 7.26 11.64 10.75 12.61 9.61 6.99 4.87 3.92 7.07 2000 3.38 3.60 3.85 5.82 7.06 7.12 8.38 8.99 8.05 6.97 4.65 4.23 6.01 2001 3.50 3.31 3.80 6.36 8.36 10.36 8.68 9.18 7.38 6.79 3.99 4.13 6.32 2002 3.41 3.49 3.94 5.51 6.79 7.70 8.28 9.99 7.21 6.78 4.57 3.05 5.89 2003 4.01 4.43 5.32 ****** ****** 8.08 9.73 9.32 8.09 6.76 4.49 3.90 ****** MEAN 3.50 3.67 4.23 5.77 7.41 9.41 9.78 10.46 8.48 6.77 4.64 3.93 6.50 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 8 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. ABSOLUTE OF MINIMUM TEMPERATURE WITH DAY YEAR JAN. DAY FEB. DAY MAR. DAY APR. DAY MAY DAY JUNE DAY JULY DAY AUG. DAY SEP. DAY OCT. DAY NOV. DAY DEC. DAY ANNUAL 1996 ***** ** ***** ** -8.0 11 -4.5 5 2.5 2 9.0 16 10.4 15 9.6 31 8.6 21 -1.0 18 -9.0 18 -10.0 5 ***** 1997 -12.0 29 -13.0 2 -15.0 21 -3.0 11 3.2 6 10.5 5 14.0 7 12.5 30 8.0 16 2.0 26 -5.0 7 -9.4 29 -15.0 1998 -12.0 15 -14.0 28 -7.0 1 1.0 25 -1.5 3 9.0 1 12.0 25 12.0 5 6.5 13 0.0 26 -1.5 26 -4.0 23 -14.0 1999 -13.0 3 -6.5 1 -7.0 6 -2.5 11 3.0 22 12.0 7 10.0 14 13.0 18 3.5 29 1.0 6 -8.0 30 -8.0 1 -13.0 2000 -11.5 12 -9.5 2 -8.0 4 -1.5 3 5.5 12 5.0 14 10.0 26 13.0 13 8.0 26 2.0 16 -5.0 12 -6.0 30 -11.5 2001 -14.0 29 -10.0 1 -7.0 12 3.0 11 7.0 1 6.5 2 10.5 20 10.0 14 5.0 22 3.0 11 -8.0 20 -7.0 22 -14.0 2002 -13.0 13 -8.0 17 -10.0 7 -1.0 6 2.0 2 8.5 23 12.0 2 9.0 14 8.0 26 3.0 23 -5.0 30 -13.0 5 -13.0 2003 -7.5 19 -8.0 13 -10.0 3 ***** ** ***** ** 5.0 7 13.0 5 12.0 31 4.5 27 5.0 7 -8.0 23 -12.0 12 ***** LOW. -14.0 29 -14.0 28 -15.0 21 -4.5 5 -1.5 3 5.0 14 10.0 14 9.0 14 3.5 29 -1.0 18 -9.0 18 -13.0 5 -15.0 YEAR 2001 1998 1997 1996 1998 2000 1999 2002 1999 1996 1996 2002 1997 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 9 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. ABSOLUTE OF MAXIMUM TEMPERATURE WITH DAY YEAR JAN. DAY FEB. DAY MAR. DAY APR. DAY MAY DAY JUNE DAY JULY DAY AUG. DAY SEP. DAY OCT. DAY NOV. DAY DEC. DAY ANNUAL 1996 ***** ** ***** ** 14.0 21 25.0 23 32.2 31 36.6 5 34.4 8 36.0 11 34.0 6 25.0 14 19.2 7 15.6 30 ***** 1997 12.0 1 14.0 22 19.2 24 27.5 25 32.5 28 35.5 16 38.5 14 38.5 14 35.0 1 28.0 5 17.5 5 11.0 6 38.5 1998 7.0 1 12.5 7 22.0 29 29.0 17 31.0 12 36.0 27 38.5 5 35.0 17 33.0 2 28.5 1 22.0 3 18.0 11 38.5 1999 10.0 11 18.5 28 20.0 31 24.5 30 35.0 31 36.5 28 36.5 4 36.0 27 38.0 1 28.0 6 15.0 2 15.5 31 38.0 2000 14.0 1 15.0 24 21.0 24 28.5 10 34.0 26 36.0 24 35.0 1 36.5 3 35.0 8 26.5 13 18.0 2 9.5 3 36.5 2001 11.0 13 14.5 28 22.0 31 28.0 6 36.0 16 37.0 7 37.0 9 37.0 21 33.5 8 29.0 1 21.0 5 14.0 31 37.0 2002 14.0 1 17.0 26 25.0 27 28.0 19 32.5 25 36.0 13 36.5 17 38.0 9 35.0 12 30.0 10 19.5 11 10.0 9 38.0 2003 11.0 9 13.0 10 19.0 20 ***** ** ***** ** 35.0 23 39.5 18 37.0 11 32.0 6 30.0 4 20.0 1 12.5 20 ***** HIG. 14.0 1 18.5 28 25.0 27 29.0 17 36.0 16 37.0 7 39.5 18 38.5 14 38.0 1 30.0 10 22.0 3 18.0 11 39.5 YEAR 2000 1999 2002 1998 2001 2001 2003 1997 1999 2002 1998 1998 2003 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 10 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. 24 HOUR MAXIMUM PRECIPITATION. YEAR JAN. DAY FEB. DAY MAR. DAY APR. DAY MAY DAY JUNE DAY JULY DAY AUG. DAY SEP. DAY OCT. DAY NOV. DAY DEC. DAY ANNUAL 1996 ***** ** ***** ** 32.0 23 14.3 15 7.0 21 4.0 14 0.0 ** 0.0 ** 0.0 ** 4.0 16 0.5 11 0.0 ** ***** 1997 2.0 28 0.0 ** 7.4 29 3.4 30 6.4 1 8.7 9 0.0 ** 0.0 ** 0.0 ** 2.0 25 6.0 13 6.0 14 8.7 1998 11.0 7 6.5 8 13.0 19 13.5 6 3.0 13 6.0 1 4.0 24 2.0 1 1.5 14 2.0 8 1.0 13 2.5 4 13.5 1999 4.5 10 0.0 ** 9.5 17 4.0 18 12.0 11 1.8 9 9.0 15 1.0 31 1.5 26 2.0 8 3.0 1 1.0 16 12.0 2000 28.0 28 11.2 14 0.0 ** 3.5 18 0.0 ** 6.5 13 0.0 ** 0.0 ** 5.5 24 13.5 15 11.2 9 25.0 11 28.0 2001 4.0 5 9.5 19 20.6 26 3.8 30 1.5 20 0.0 ** 11.0 19 1.5 10 1.5 18 0.0 ** 0.8 9 6.0 2 20.6 2002 6.5 8 8.4 20 4.2 21 13.0 13 11.0 4 0.8 4 0.4 24 5.0 13 10.5 25 0.4 15 6.0 13 12.0 14 13.0 2003 4.5 29 16.8 5 24.0 8 ***** ** ***** ** 2.0 2 0.0 ** 6.0 23 0.4 25 3.0 28 3.0 4 7.0 7 ***** HIG. 28.0 28 16.8 5 32.0 23 14.3 15 12.0 11 8.7 9 11.0 19 6.0 23 10.5 25 13.5 15 11.2 9 25.0 11 32.0 YEAR 2000 2003 1996 1996 1999 1997 2001 2003 2002 2000 2000 2000 1996 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 11 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. MONTHLY TOTAL PRECIPITATION WITH SEASONAL PERCENT. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL SEASONAL-PERCENT ----------------------- 1996 ****** ****** 63.0 34.9 25.3 7.0 0.0 0.0 0.0 4.0 0.5 0.0 ****** 46.8 49.9 0.0 3.3 1997 2.0 0.0 32.1 6.6 14.8 16.4 0.0 0.0 0.0 4.8 10.5 9.7 96.9 35.2 39.0 0.0 25.8 1998 24.5 32.0 40.3 19.3 15.0 6.5 7.0 2.5 2.5 2.5 1.0 2.5 155.6 62.2 26.2 7.7 3.9 1999 6.5 0.0 25.0 11.0 13.5 1.8 23.0 1.8 1.5 3.5 11.1 1.0 99.7 31.6 26.4 26.4 15.6 2000 44.6 19.4 0.0 4.2 0.0 10.5 0.0 0.0 16.5 24.3 12.2 59.9 191.6 33.4 7.7 8.6 50.3 2001 4.0 10.0 28.1 5.6 2.5 0.0 12.4 2.5 1.5 0.0 0.8 16.4 83.8 50.2 9.7 19.6 20.5 2002 17.4 15.9 7.6 40.5 12.4 0.8 0.4 5.0 10.7 0.4 6.8 32.4 150.3 27.2 35.7 10.7 26.3 2003 7.3 27.5 50.2 ****** ****** 2.0 0.0 7.7 0.4 3.5 6.5 11.5 ****** 72.9 1.7 6.9 18.4 MEAN 15.2 15.0 30.8 17.4 11.9 5.6 5.4 2.4 4.1 5.4 6.2 16.7 136.1 44.8 25.8 8.7 20.7 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 12 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. NO. OF DAYS WITH PRECIPITATION YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 *** *** 6 5 9 3 0 0 0 1 1 0 *** 1997 1 0 8 3 5 5 0 0 0 4 3 3 32 1998 4 8 6 4 9 2 3 2 2 2 1 1 44 1999 2 0 3 5 2 1 4 2 1 3 7 1 31 2000 5 3 0 2 0 2 0 0 4 4 2 6 28 2001 1 2 5 2 2 0 2 2 1 0 1 4 22 2002 4 3 3 9 3 1 1 1 2 1 2 8 38 2003 4 5 3 *** *** 1 0 3 1 2 3 3 *** MEAN 3 3 4 4 4 2 1 1 1 2 3 3 31 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 13 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. NO. OF DAYS PRECIPITATION EQUAL OR MORE THAN 1 MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 *** *** 6 5 9 3 0 0 0 1 0 0 *** 1997 1 0 8 2 4 4 0 0 0 2 2 2 25 1998 3 8 5 4 7 1 3 1 2 1 1 1 37 1999 2 0 3 4 2 1 4 1 1 2 5 1 26 2000 4 3 0 1 0 2 0 0 4 3 2 5 24 2001 1 1 3 2 2 0 2 2 1 0 0 4 18 2002 4 3 2 7 2 0 0 1 1 0 1 6 27 2003 2 5 3 *** *** 1 0 2 0 1 3 3 *** MEAN 2 3 4 4 4 2 1 1 1 1 2 3 28 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 14 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. NO. OF DAYS PRECIPITATION EQUAL OR MORE THAN 10 MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 *** *** 2 1 0 0 0 0 0 0 0 0 *** 1997 0 0 0 0 0 0 0 0 0 0 0 0 0 1998 1 0 2 1 0 0 0 0 0 0 0 0 4 1999 0 0 0 0 1 0 0 0 0 0 0 0 1 2000 1 1 0 0 0 0 0 0 0 1 1 3 7 2001 0 0 1 0 0 0 1 0 0 0 0 0 2 2002 0 0 0 1 1 0 0 0 1 0 0 1 4 2003 0 1 2 *** *** 0 0 0 0 0 0 0 *** MEAN 0 0 1 0 0 0 0 0 0 0 0 1 2 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 15 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 03 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 *** *** 72 68 67 57 55 59 57 60 67 66 *** 1997 68 61 67 60 57 60 57 54 56 54 77 82 63 1998 72 73 76 67 63 60 60 66 64 57 69 79 67 1999 78 74 73 67 60 63 68 67 69 64 81 79 70 2000 75 76 70 61 56 52 53 55 58 68 76 84 65 2001 77 73 69 68 64 59 52 56 53 67 67 80 65 2002 72 75 64 75 62 47 48 57 47 53 75 73 62 2003 77 81 76 *** *** 56 54 56 61 52 72 77 *** MEAN 74 73 71 67 61 57 56 59 58 59 73 78 66 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 16 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 09 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 *** *** 64 49 46 40 40 42 41 49 45 46 *** 1997 56 56 56 40 35 34 34 32 31 36 53 70 44 1998 69 65 55 45 41 36 37 39 42 44 52 50 48 1999 64 46 47 32 36 43 41 44 43 41 59 51 46 2000 55 57 43 29 27 28 32 29 32 44 56 65 41 2001 61 42 35 35 37 41 30 31 29 40 36 58 40 2002 58 45 33 49 35 27 28 31 26 32 41 64 39 2003 64 65 61 *** *** 29 30 30 35 32 49 73 *** MEAN 61 54 49 40 37 35 34 35 35 40 49 60 44 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 17 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 15 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 *** *** 69 54 58 51 44 46 48 59 55 58 *** 1997 61 62 58 43 40 44 36 37 41 52 66 82 52 1998 76 73 62 49 46 48 46 45 46 49 58 64 55 1999 75 54 51 43 40 48 48 51 48 50 69 70 54 2000 71 67 47 35 33 30 32 34 39 56 63 71 48 2001 74 52 40 42 45 46 38 37 40 53 49 72 49 2002 68 55 39 50 42 34 35 40 32 42 60 72 47 2003 77 76 68 *** *** 39 34 41 44 44 61 76 *** MEAN 72 63 54 45 43 43 39 41 42 51 60 71 52 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 18 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. NO. OF DAYS MINIMUM TEMPERATURE EQUAL OR LESS THAN -4 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 *** *** 5 2 0 0 0 0 0 0 10 23 *** 1997 25 21 10 0 0 0 0 0 0 0 5 13 74 1998 20 17 6 0 0 0 0 0 0 0 0 1 44 1999 17 10 3 0 0 0 0 0 0 0 3 17 50 2000 24 15 8 0 0 0 0 0 0 0 3 5 55 2001 21 16 2 0 0 0 0 0 0 0 6 6 51 2002 17 9 6 0 0 0 0 0 0 0 2 22 56 2003 22 4 5 *** *** 0 0 0 0 0 8 15 *** MEAN 21 13 6 0 0 0 0 0 0 0 5 13 58 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 19 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. NO. OF DAYS MINIMUM TEMPERATURE EQUAL OR MORE THAN 21 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 *** *** 0 0 0 0 0 0 0 0 0 0 *** 1997 0 0 0 0 0 0 3 1 0 0 0 0 4 1998 0 0 0 0 0 0 4 0 0 0 0 0 4 1999 0 0 0 0 0 0 0 0 0 0 0 0 0 2000 0 0 0 0 0 0 1 0 0 0 0 0 1 2001 0 0 0 0 0 1 2 0 0 0 0 0 3 2002 0 0 0 0 0 0 2 2 0 0 0 0 4 2003 0 0 0 *** *** 0 7 0 0 0 0 0 *** MEAN 0 0 0 0 0 0 2 0 0 0 0 0 2 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 20 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. NO. OF DAYS MAXIMUM TEMPERATURE EQUAL OR LESS THAN 0 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 *** *** 0 0 0 0 0 0 0 0 0 0 *** 1997 1 0 0 0 0 0 0 0 0 0 0 0 1 1998 0 4 1 0 0 0 0 0 0 0 0 0 5 1999 0 0 0 0 0 0 0 0 0 0 0 0 0 2000 0 0 0 0 0 0 0 0 0 0 0 0 0 2001 1 0 0 0 0 0 0 0 0 0 0 0 1 2002 0 0 0 0 0 0 0 0 0 0 0 1 1 2003 0 0 0 *** *** 0 0 0 0 0 0 3 *** MEAN 0 1 0 0 0 0 0 0 0 0 0 1 2 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 21 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. NO. OF DAYS MAXIMUM TEMPERATURE EQUAL OR MORE THAN 30 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 *** *** 0 0 4 18 27 23 15 0 0 0 *** 1997 0 0 0 0 4 18 29 29 11 0 0 0 91 1998 0 0 0 0 1 20 20 23 10 0 0 0 74 1999 0 0 0 0 7 20 12 22 12 0 0 0 73 2000 0 0 0 0 11 16 27 28 16 0 0 0 98 2001 0 0 0 0 7 17 19 23 12 0 0 0 78 2002 0 0 0 0 6 16 19 25 21 1 0 0 88 2003 0 0 0 *** *** 15 29 21 8 1 0 0 *** MEAN 0 0 0 0 6 18 23 24 13 0 0 0 84 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 22 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. NO. OF DAYS MAXIMUM TEMPERATURE EQUAL OR MORE THAN 40 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 *** *** 0 0 0 0 0 0 0 0 0 0 *** 1997 0 0 0 0 0 0 0 0 0 0 0 0 0 1998 0 0 0 0 0 0 0 0 0 0 0 0 0 1999 0 0 0 0 0 0 0 0 0 0 0 0 0 2000 0 0 0 0 0 0 0 0 0 0 0 0 0 2001 0 0 0 0 0 0 0 0 0 0 0 0 0 2002 0 0 0 0 0 0 0 0 0 0 0 0 0 2003 0 0 0 *** *** 0 0 0 0 0 0 0 *** MEAN 0 0 0 0 0 0 0 0 0 0 0 0 0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 23 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. NO. OF DAYS MAXIMUM TEMPERATURE EQUAL OR MORE THAN 45 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 *** *** 0 0 0 0 0 0 0 0 0 0 *** 1997 0 0 0 0 0 0 0 0 0 0 0 0 0 1998 0 0 0 0 0 0 0 0 0 0 0 0 0 1999 0 0 0 0 0 0 0 0 0 0 0 0 0 2000 0 0 0 0 0 0 0 0 0 0 0 0 0 2001 0 0 0 0 0 0 0 0 0 0 0 0 0 2002 0 0 0 0 0 0 0 0 0 0 0 0 0 2003 0 0 0 *** *** 0 0 0 0 0 0 0 *** MEAN 0 0 0 0 0 0 0 0 0 0 0 0 0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 24 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. NO. OF FREEZING DAYS , DATE OF START AND END FREEZING START END YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MO DAY MO DAY -------------- 1996 *** *** 14 4 0 0 0 0 0 4 23 31 *** 10 18 4 16 1997 30 27 22 5 0 0 0 0 0 0 17 25 126 11 7 4 14 1998 31 26 15 0 1 0 0 0 0 1 5 20 99 10 26 5 3 1999 25 22 18 3 0 0 0 0 0 0 18 30 116 11 3 4 19 2000 30 27 21 1 0 0 0 0 0 0 18 28 125 11 8 4 3 2001 31 25 8 0 0 0 0 0 0 0 10 24 98 11 3 3 20 2002 25 25 13 2 0 0 0 0 0 0 14 27 106 11 16 4 14 2003 31 26 16 *** *** 0 0 0 0 0 15 31 *** 11 5 3 31 MEAN 29 25 16 2 0 0 0 0 0 1 15 27 115 10 18 5 3 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 25 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. AVERAGE OF DRY BULB TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 ****** ****** 3.6 11.5 17.7 22.9 25.7 24.9 22.7 13.7 6.5 3.2 ****** 1997 1.7 1.5 5.5 13.7 18.6 24.0 27.7 26.9 21.5 17.0 7.2 2.5 14.0 1998 -0.5 1.1 7.8 15.8 19.0 25.1 25.7 25.8 21.8 16.4 11.1 6.2 14.6 1999 1.3 6.0 7.7 13.3 19.7 25.0 23.7 25.2 21.3 16.7 6.1 3.3 14.1 2000 0.5 2.2 7.4 17.8 22.4 24.3 25.6 26.2 22.7 14.4 6.3 3.1 14.4 2001 0.6 3.8 10.1 17.1 20.8 24.4 24.8 25.4 21.1 15.4 8.4 3.4 14.6 2002 1.2 4.7 10.1 12.8 18.8 24.1 25.3 25.9 23.5 18.8 8.0 -1.0 14.4 2003 1.6 3.5 7.0 ****** ****** 23.0 27.6 24.4 20.4 18.2 7.0 1.0 ****** MEAN 0.9 3.3 7.4 14.6 19.6 24.1 25.8 25.6 21.9 16.3 7.6 2.7 14.1 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 26 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. AVERAGE OF DEW POINT TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 ****** ****** -1.9 2.9 8.6 11.0 12.9 12.8 10.8 4.7 -2.3 -5.1 ****** 1997 -5.2 -5.8 -2.0 1.9 5.1 10.7 12.7 11.5 7.4 5.0 0.5 -1.1 3.4 1998 -5.0 -4.0 1.1 5.7 7.8 12.8 12.6 13.7 10.2 5.4 3.2 -0.6 5.2 1999 -3.3 -2.2 -1.1 1.1 6.7 13.7 12.8 14.9 10.7 5.9 0.6 -2.8 4.8 2000 -5.5 -3.8 -2.0 3.4 6.5 7.3 9.8 9.7 8.3 5.1 -0.3 -1.4 3.1 2001 -4.5 -5.0 -1.8 4.9 8.8 12.0 9.3 10.1 6.1 5.2 -2.2 -1.8 3.4 2002 -4.8 -3.6 -2.5 3.5 5.9 7.2 8.8 10.9 6.2 4.9 -0.4 -5.9 2.5 2003 -3.0 -0.9 1.3 ****** ****** 8.3 11.7 9.9 7.7 4.6 -0.5 -3.0 ****** MEAN -4.5 -3.6 -1.1 3.4 7.1 10.4 11.3 11.7 8.4 5.1 -0.2 -2.7 3.8 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 27 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. AVERAGE OF MIXING RATIO IN G/KG YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 ****** ****** 3.96 5.64 8.24 9.71 11.02 10.95 9.65 6.34 3.95 3.20 ****** 1997 3.15 3.13 4.06 5.42 6.61 9.50 10.86 10.20 7.60 6.44 4.78 4.23 6.33 1998 3.20 3.45 4.96 6.80 7.88 10.84 11.01 11.76 9.41 6.71 5.69 4.33 7.17 1999 3.64 3.85 4.18 4.98 7.36 11.61 10.86 12.56 9.74 6.82 4.75 3.70 7.01 2000 3.06 3.46 3.96 5.81 7.11 7.64 8.97 9.18 8.04 6.47 4.51 4.07 6.02 2001 3.30 3.15 4.04 6.49 8.39 10.41 8.62 9.19 7.00 6.62 3.89 3.99 6.26 2002 3.29 3.46 3.91 5.85 6.82 7.50 8.34 9.70 7.02 6.42 4.45 3.00 5.81 2003 3.69 4.27 5.12 ****** ****** 8.11 10.10 9.03 7.86 6.27 4.42 3.79 ****** MEAN 3.33 3.54 4.27 5.85 7.49 9.41 9.97 10.32 8.29 6.51 4.55 3.79 6.45 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 28 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. AVERAGE OF VAPOUR PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 ****** ****** 5.43 7.74 11.31 13.33 15.11 15.01 13.25 8.71 5.42 4.39 ****** 1997 4.32 4.29 5.56 7.45 9.09 13.04 14.91 14.01 10.46 8.86 6.56 5.80 8.70 1998 4.38 4.72 6.81 9.34 10.83 14.87 15.09 16.10 12.91 9.22 7.81 5.95 9.83 1999 4.99 5.29 5.74 6.85 10.12 15.90 14.89 17.18 13.35 9.38 6.52 5.07 9.61 2000 4.19 4.74 5.45 8.00 9.79 10.53 12.34 12.61 11.06 8.88 6.18 5.57 8.28 2001 4.52 4.32 5.56 8.93 11.52 14.28 11.86 12.64 9.63 9.10 5.34 5.47 8.60 2002 4.51 4.75 5.38 8.03 9.38 10.33 11.48 13.33 9.67 8.84 6.11 4.11 7.99 2003 5.05 5.85 7.02 ****** ****** 11.15 13.88 12.41 10.80 8.62 6.07 5.19 ****** MEAN 4.57 4.85 5.87 8.05 10.29 12.93 13.69 14.16 11.39 8.95 6.25 5.19 8.85 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 29 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. AVERAGE OF SATURATION DEFICIT PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 ****** ****** 2.71 6.64 9.86 15.56 18.57 17.58 15.83 7.41 4.79 3.72 ****** 1997 2.93 3.02 3.97 9.21 13.39 17.69 23.55 23.03 16.45 11.36 4.07 1.75 10.87 1998 1.68 2.21 4.35 9.86 12.08 17.90 18.84 18.21 14.54 10.27 6.00 3.95 9.99 1999 2.04 4.65 5.36 9.21 14.12 16.91 15.38 15.95 13.41 10.54 3.24 3.07 9.49 2000 2.55 2.79 5.79 13.42 18.55 21.42 21.50 22.70 17.68 8.09 3.85 2.24 11.71 2001 2.15 4.13 7.61 11.57 14.15 17.77 20.46 21.17 16.51 9.14 6.32 2.60 11.13 2002 2.61 4.39 7.99 7.72 13.62 20.98 21.76 21.43 20.57 13.82 5.16 1.80 11.82 2003 2.05 2.25 3.53 ****** ****** 18.22 24.48 19.06 14.22 12.97 4.58 1.73 ****** MEAN 2.29 3.35 5.16 9.66 13.68 18.31 20.57 19.89 16.15 10.45 4.75 2.61 10.57 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 30 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. AVERAGE OF RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 *** *** 69 57 57 49 46 49 49 56 56 57 *** 1997 62 60 60 48 44 46 42 41 43 47 65 78 53 1998 72 70 64 53 50 48 48 50 51 50 60 64 57 1999 72 58 57 47 45 51 52 54 53 52 70 66 56 2000 67 67 54 42 38 37 39 39 43 56 65 73 52 2001 70 56 48 48 48 48 40 41 41 53 51 70 51 2002 66 59 45 58 46 36 37 43 35 42 58 70 50 2003 73 74 68 *** *** 41 39 43 46 43 61 76 *** MEAN 69 63 58 50 47 45 43 45 45 50 61 69 54 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 31 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. AVERAGE OF MAXIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 *** *** 79 69 69 59 55 59 60 64 69 69 *** 1997 74 68 72 62 59 62 57 54 57 58 78 85 66 1998 80 79 77 67 64 61 64 67 65 59 69 79 69 1999 83 74 74 68 61 64 68 67 70 64 83 80 71 2000 80 79 72 61 56 52 55 56 59 69 79 85 67 2001 83 74 69 68 64 60 53 56 55 67 67 82 67 2002 78 77 64 76 62 47 48 57 48 53 75 78 64 2003 81 84 79 *** *** 56 54 56 61 54 74 83 *** MEAN 80 76 73 67 62 58 57 59 59 61 74 80 67 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 32 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. AVERAGE OF MINIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 *** *** 58 47 45 39 39 41 39 47 43 45 *** 1997 51 50 48 37 33 33 32 31 31 36 53 69 42 1998 64 59 52 42 39 36 34 37 40 42 51 50 46 1999 62 46 44 31 34 42 41 44 41 40 58 51 45 2000 52 56 41 28 26 27 29 28 31 44 52 64 40 2001 57 42 33 34 36 39 30 30 29 39 36 58 39 2002 54 45 32 46 34 26 28 31 25 32 41 62 38 2003 63 64 58 *** *** 29 29 30 35 31 49 67 *** MEAN 58 52 46 38 35 34 33 34 34 39 48 58 42 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 33 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. NO. OF DAYS PRECIPITATION EQUAL OR MORE THAN 5 MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1996 *** *** 4 3 1 0 0 0 0 0 0 0 *** 1997 0 0 4 0 2 1 0 0 0 0 1 1 9 1998 2 2 4 1 0 1 0 0 0 0 0 0 10 1999 0 0 3 0 1 0 3 0 0 0 0 0 7 2000 2 2 0 0 0 1 0 0 2 2 1 3 13 2001 0 1 1 0 0 0 1 0 0 0 0 2 5 2002 2 2 0 4 1 0 0 1 1 0 1 2 14 2003 0 1 3 *** *** 0 0 1 0 0 0 1 *** MEAN 1 1 2 1 1 0 1 0 0 0 0 1 8 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 34 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. HIGHEST AND LOWEST LIMITS FOR 8 YEARS DURING 1996-2003 ELE- JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MENT --------------------------------------------------------------------------------------------- NO. HIG. DRY 03 7.0 7.0 14.0 17.0 23.4 25.2 27.6 25.0 23.0 20.2 12.0 5.0 1 YEAR - DAY 2002- 8 1999-28 1998-30 1998-18 1997-29 2001-29 1997-16 1997-14 1998-26 1997- 7 2001-12 1998- 1 LOW. DRY 03 -12.0 -11.6 -7.2 -2.0 4.6 10.0 14.0 13.0 9.0 4.0 -6.0 -11.0 2 YEAR - DAY 2001-29 1997- 2 2000-16 1996- 5 1998- 3 2000-13 1999-15 2002-14 2001-20 1999-26 2003-23 2002- 5 HIG. WET 03 6.0 4.2 12.8 12.6 17.0 18.4 19.4 19.0 17.0 13.6 8.4 3.8 3 YEAR - DAY 2002- 8 2000-26 1998-30 1998-19 2000- 7 1998-27 1999- 9 1998-18 1998- 4 1996- 1 1997- 5 1998- 1 LOW. WET 03 -13.4 -12.8 -9.2 -3.4 2.8 6.0 10.2 9.0 5.6 2.2 -7.0 -12.0 4 YEAR - DAY 2001-29 1997- 2 1997-21 1996- 5 1998- 3 2000-13 2000-26 2001-15 2001-20 1999-28 2003-23 2002- 5 HIG. DRY 09 13.0 16.4 23.0 27.4 33.0 35.6 38.0 36.6 34.0 28.0 21.0 16.6 5 YEAR - DAY 2002- 1 1999-27 2002-27 1998-17 2001-16 2001-28 2003-17 1997-17 1997- 1 1998- 1 1998- 3 1998-11 LOW. DRY 09 -2.0 -4.6 -1.4 5.6 11.4 17.0 18.0 22.0 16.4 8.4 -1.0 -1.8 6 YEAR - DAY 2000-18 1998-16 1998- 1 1996- 4 1997- 5 2000-13 2000-30 2001-11 2001-20 2000-15 1999-29 2002-19 HIG. WET 09 8.0 9.4 13.2 17.8 23.0 23.6 23.2 25.0 22.6 18.0 13.0 10.6 7 YEAR - DAY 2002- 1 1999-28 1997-24 2001-25 2001-16 2001- 7 1997-14 1999-30 1996- 6 1998- 1 1998-22 1998- 1 LOW. WET 09 -4.0 -6.4 -2.2 1.6 8.2 10.2 11.8 13.4 9.2 5.2 -1.4 -2.6 8 YEAR - DAY 2002-12 1998-16 1998- 1 1997-11 1998- 2 2000-13 1998-14 1997-28 2001-20 2001-27 1999-29 2002-15 HIG. DRY 15 9.0 14.0 19.4 25.4 31.0 34.4 36.0 35.4 32.4 26.2 16.4 11.0 9 YEAR - DAY 2002- 3 2002-26 2002-26 1998-17 2001-16 2001-26 2003-17 1997-14 1997- 1 1998- 1 1998- 1 1998-17 LOW. DRY 15 -6.2 -5.2 -3.0 2.2 8.2 15.4 17.2 19.0 13.4 6.0 -1.0 -6.0 10 YEAR - DAY 1998-14 1998-15 2003- 2 1996- 4 1997- 5 1996-26 1999-27 2002-13 2001-21 2000-15 1999-29 2002-14 HIG. WET 15 5.4 8.0 12.0 17.0 21.4 23.0 22.0 22.2 19.8 17.0 10.2 6.2 11 YEAR - DAY 2002- 1 1999-20 2002-18 2001-26 2001-15 2001- 6 1998- 5 1997- 3 1996- 7 2002- 7 1998- 1 1998- 1 LOW. WET 15 -7.6 -6.8 -4.4 0.0 5.4 8.4 13.0 11.0 8.4 4.0 -2.2 -7.4 12 YEAR - DAY 1998-14 1997- 8 2003- 2 1996- 5 1998- 3 2000-13 1999-13 1998-24 2003-28 2001-26 1996-18 2002-14 HIG. MIN. 7.0 4.2 13.0 14.0 19.0 21.0 22.0 21.0 17.0 15.0 10.0 4.0 13 YEAR - DAY 2002- 8 1998- 8 1998-30 1998-17 1997-29 2001-29 1998- 5 1997-18 2000- 9 1997- 7 1997- 5 1998- 1 LOW. MIN. -14.0 -14.0 -15.0 -4.5 -1.5 5.0 10.0 9.0 3.5 -1.0 -9.0 -13.0 14 YEAR - DAY 2001-29 1998-28 1997-21 1996- 5 1998- 3 2000-14 1999-14 2002-14 1999-29 1996-18 1996-18 2002- 5 HIG. MAX. 14.0 18.5 25.0 29.0 36.0 37.0 39.5 38.5 38.0 30.0 22.0 18.0 15 YEAR - DAY 2000- 1 1999-28 2002-27 1998-17 2001-16 2001- 7 2003-18 1997-14 1999- 1 2002-10 1998- 3 1998-11 LOW. MAX. -1.0 -1.5 0.0 7.4 14.5 18.5 20.5 24.0 19.5 10.0 2.0 -1.8 16 YEAR - DAY 1997-29 1998-16 1998- 1 1996- 4 1998- 2 2000-13 1998-24 2002-13 2001-20 2000-15 2000-10 2002-19 HIG. PPTN 28.0 16.8 32.0 14.3 12.0 8.7 11.0 6.0 10.5 13.5 11.2 25.0 17 YEAR - DAY 2000-28 2003- 5 1996-23 1996-15 1999-11 1997- 9 2001-19 2003-23 2002-25 2000-15 2000- 9 2000-11 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 35 STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. HIGHEST LIMITS OF ABSOLUTE DIFFERENCES FOR 8 YEARS DURING 1996-2003 ELE- JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MENT --------------------------------------------------------------------------------------------- NO. DRY 09 - DRY 03 15.0 15.0 17.0 15.4 15.8 15.6 15.0 17.0 17.8 14.0 14.8 15.0 18 YEAR - DAY 1999- 5 2002- 7 2002-27 2000- 9 1999-13 1999-25 2003- 2 1999-29 1999-16 2001-16 2003-26 1996- 5 DRY 15 - DRY 09 9.8 8.2 13.0 10.8 9.0 10.0 8.4 8.8 9.6 10.0 10.4 10.4 19 YEAR - DAY 2000- 1 1997- 5 1997-20 1997-20 1999- 4 2001- 7 1998-28 1998- 1 1996-29 2001-26 2002-24 1999-18 DRY 15 - DRY 03 11.2 12.2 13.6 16.0 14.8 13.0 14.0 14.0 15.0 10.4 10.6 9.8 20 YEAR - DAY 2000-25 2002- 7 1999-31 2000- 3 1999-13 1999-25 2003- 2 2000-26 2002-19 2000-26 1996-19 1999-15 WET 09 - WET 03 13.8 12.0 12.4 11.2 9.2 10.0 7.4 9.4 11.0 9.0 12.4 12.0 21 YEAR - DAY 1999- 5 1997- 3 1997-21 1996- 7 2001-14 1999- 1 1996-18 1999-29 1998-19 2001-12 2003-26 1996- 5 WET 15 - WET 09 9.0 6.6 9.4 6.0 5.8 5.4 7.2 10.0 10.0 6.8 6.4 7.0 22 YEAR - DAY 1999- 4 1997- 6 1997-20 1996- 1 2002- 4 1996- 6 1998-14 1998-24 1999-14 1997-20 1997-11 1999-31 WET 15 - WET 03 10.0 9.6 10.2 10.0 8.0 8.4 6.0 8.6 9.8 8.0 9.2 8.8 23 YEAR - DAY 1999-27 1997- 2 1997-21 2000- 3 2001-14 1999- 1 2001-31 2002-15 1998-19 2003- 2 2003-26 1999-15 DAY BY DAY DRY 03 8.8 10.0 11.8 8.4 8.2 7.0 5.2 7.0 8.0 10.0 8.8 11.0 24 YEAR - DAY 1999- 2 1998-28 1997-22 1997-11 1999-11 1996- 6 1997-17 2002-16 1998-27 1999-14 1996- 1 2003-12 DAY BY DAY WET 03 9.0 9.0 11.8 7.6 5.6 6.6 4.8 5.6 6.0 8.6 8.0 11.2 25 YEAR - DAY 2002-13 1998-28 2002- 7 1998-25 1999-22 2000-13 1999-10 2002-16 2003-26 1999-14 1997- 7 2003-12 DAY BY DAY DRY 09 7.4 8.0 16.8 14.2 15.0 10.6 13.0 7.8 7.6 12.8 10.0 6.2 26 YEAR - DAY 2002-30 1998- 9 2001-26 2002-11 1997- 5 2001- 8 2000-31 1996-28 1999- 4 2001- 2 1997-13 2003-21 DAY BY DAY WET 09 6.2 8.0 11.4 7.2 7.4 6.4 7.6 6.8 6.6 9.0 5.4 4.8 27 YEAR - DAY 1997-28 1998- 9 2001-26 1996- 1 2001-17 2001- 8 1998-14 2000-13 1997-12 1998- 9 1996-30 2002-11 DAY BY DAY DRY 15 7.4 9.2 15.0 12.4 14.0 12.6 9.0 8.6 10.2 11.0 11.6 7.0 28 YEAR - DAY 1999- 2 1998- 9 2002- 6 1997-21 1997- 5 2002- 7 2003- 2 1996-28 1998-26 2001-26 2001-19 2003-11 DAY BY DAY WET 15 6.8 7.8 10.6 7.8 6.6 6.6 4.8 10.6 8.0 6.4 7.0 7.4 29 YEAR - DAY 1997-28 1998- 9 2002- 6 1997-20 1999-21 2003-25 1998- 5 1998-24 1998- 2 2001-26 2001-19 2002-14 DAY BY DAY MIN. 10.0 11.0 13.0 9.2 10.0 8.0 6.0 7.0 7.5 13.0 11.0 11.0 30 YEAR - DAY 2002- 9 1998-28 1997-21 1996-16 1997- 6 2002- 6 2000-10 2002-14 1999-24 1999- 7 2001-20 2003-12 DAY BY DAY MAX. 8.0 10.0 15.5 14.5 12.5 11.0 10.0 8.0 11.0 12.0 9.8 6.5 31 YEAR - DAY 2002-30 1998- 9 2001-26 2002-11 1999-21 2001- 8 1998-24 1999-31 1999- 1 2001- 2 1997-13 2003-21 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. MEAN AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C.***** ***** 3.1 11.1 17.0 21.6 23.9 23.0 20.6 11.8 5.3 2.4 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** ***** -1.5 4.5 9.7 13.3 16.0 14.5 11.9 3.6 -2.1 -5.4 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** ***** 7.8 17.7 24.3 29.8 31.8 31.5 29.2 20.0 12.7 10.1 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** ***** 9.3 13.2 14.6 16.5 15.8 17.0 17.3 16.4 14.8 15.5 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** ***** 3.51 5.36 7.78 9.02 10.11 9.65 7.92 5.55 3.45 2.60 ***** MEAN OF MIXING RATIO AT 09 GMT. ***** ***** 4.45 6.19 8.78 10.43 12.22 12.45 11.25 7.18 4.47 3.74 ***** MEAN OF MIXING RATIO AT 15 GMT. ***** ***** 3.92 5.36 8.17 9.69 10.72 10.75 9.79 6.30 3.91 3.25 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** ***** -8.0 -4.5 2.5 9.0 10.4 9.6 8.6 -1.0 -9.0 -10.0 ****** DAY ** ** 11 5 2 16 15 31 21 18 18 5 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** ***** 14.0 25.0 32.2 36.6 34.4 36.0 34.0 25.0 19.2 15.6 ****** DAY ** ** 21 23 31 5 8 11 6 14 7 30 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** ***** 32.0 14.3 7.0 4.0 0.0 0.0 0.0 4.0 0.5 0.0 ****** DAY ** ** 23 15 21 14 ** ** ** 16 11 ** MONTHLY TOTAL PRECIPITATION IN MM. ***** ***** 63.0 34.9 25.3 7.0 0.0 0.0 0.0 4.0 0.5 0.0 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 46.8 49.9 0.0 3.3 NO. OF DAYS WITH PRECIPITATION. *** *** 6 5 9 3 0 0 0 1 1 0 *** NO. OF DAYS PRECIPITATION EQUAL *** *** 6 5 9 3 0 0 0 1 0 0 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** *** 2 1 0 0 0 0 0 0 0 0 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** *** 72 68 67 57 55 59 57 60 67 66 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** *** 64 49 46 40 40 42 41 49 45 46 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** *** 69 54 58 51 44 46 48 59 55 58 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** 5 2 0 0 0 0 0 0 10 23 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** 0 0 0 0 0 0 0 0 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** 0 0 0 0 0 0 0 0 0 0 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** 0 0 4 18 27 23 15 0 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** 0 0 0 0 0 0 0 0 0 0 *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** 0 0 0 0 0 0 0 0 0 0 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. *** *** 14 4 0 0 0 0 0 4 23 31 *** DATE OF START AND END FREEZING START = 18 OCT. END = 16 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. MEAN AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 0.9 0.7 4.7 12.7 16.9 22.7 26.2 24.9 19.7 15.4 6.5 2.2 12.8 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.7 -6.7 -2.3 5.3 9.1 15.1 18.7 16.4 11.5 7.8 0.2 -2.8 5.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.5 8.0 11.7 20.1 24.7 30.3 33.7 33.5 27.9 23.1 12.8 7.2 20.0 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.2 14.7 14.0 14.8 15.6 15.2 15.0 17.1 16.4 15.3 12.6 10.0 14.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.53 2.21 3.46 4.90 6.72 9.69 11.00 9.40 7.14 5.73 4.19 3.44 5.87 MEAN OF MIXING RATIO AT 09 GMT. 3.82 3.99 4.86 6.01 6.68 9.40 11.21 10.32 7.44 6.82 5.30 4.83 6.72 MEAN OF MIXING RATIO AT 15 GMT. 3.12 3.19 3.85 5.35 6.42 9.41 10.37 10.88 8.23 6.78 4.85 4.43 6.41 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -12.0 -13.0 -15.0 -3.0 3.2 10.5 14.0 12.5 8.0 2.0 -5.0 -9.4 -15.0 DAY 29 2 21 11 6 5 7 30 16 26 7 29 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 12.0 14.0 19.2 27.5 32.5 35.5 38.5 38.5 35.0 28.0 17.5 11.0 38.5 DAY 1 22 24 25 28 16 14 14 1 5 5 6 24 HOUR MAXIMUM PRECIPITATION IN MM. 2.0 0.0 7.4 3.4 6.4 8.7 0.0 0.0 0.0 2.0 6.0 6.0 8.7 DAY 28 ** 29 30 1 9 ** ** ** 25 13 14 MONTHLY TOTAL PRECIPITATION IN MM. 2.0 0.0 32.1 6.6 14.8 16.4 0.0 0.0 0.0 4.8 10.5 9.7 96.9 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 35.2 39.0 0.0 25.8 NO. OF DAYS WITH PRECIPITATION. 1 0 8 3 5 5 0 0 0 4 3 3 32 NO. OF DAYS PRECIPITATION EQUAL 1 0 8 2 4 4 0 0 0 2 2 2 25 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 68 61 67 60 57 60 57 54 56 54 77 82 63 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 56 56 56 40 35 34 34 32 31 36 53 70 44 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 61 62 58 43 40 44 36 37 41 52 66 82 52 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 25 21 10 0 0 0 0 0 0 0 5 13 74 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 3 1 0 0 0 0 4 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 1 0 0 0 0 0 0 0 0 0 0 0 1 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 4 18 29 29 11 0 0 0 91 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 30 27 22 5 0 0 0 0 0 0 17 25 126 DATE OF START AND END FREEZING START = 7 NOV. END = 14 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. MEAN AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. -0.9 0.6 7.0 14.4 17.1 22.6 24.1 24.0 20.0 14.1 9.8 5.8 13.2 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.3 -4.5 1.0 7.4 9.4 14.6 17.3 16.3 12.1 6.5 2.6 -0.4 6.4 AVERAGE OF MAXIMUM TEMPERATURE IN C. 3.6 5.7 13.1 21.5 24.8 30.6 31.0 31.7 28.0 21.7 17.0 12.0 20.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.9 10.2 12.1 14.1 15.4 16.0 13.7 15.4 15.9 15.2 14.4 12.4 13.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.61 2.91 4.58 6.21 7.54 10.62 11.05 11.18 8.39 5.82 4.58 3.79 6.61 MEAN OF MIXING RATIO AT 09 GMT. 3.71 3.79 5.34 7.42 8.34 10.70 10.71 12.14 10.38 7.57 6.73 4.76 7.63 MEAN OF MIXING RATIO AT 15 GMT. 3.27 3.64 4.97 6.75 7.77 11.20 11.30 11.95 9.47 6.73 5.76 4.46 7.27 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -12.0 -14.0 -7.0 1.0 -1.5 9.0 12.0 12.0 6.5 0.0 -1.5 -4.0 -14.0 DAY 15 28 1 25 3 1 25 5 13 26 26 23 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 7.0 12.5 22.0 29.0 31.0 36.0 38.5 35.0 33.0 28.5 22.0 18.0 38.5 DAY 1 7 29 17 12 27 5 17 2 1 3 11 24 HOUR MAXIMUM PRECIPITATION IN MM. 11.0 6.5 13.0 13.5 3.0 6.0 4.0 2.0 1.5 2.0 1.0 2.5 13.5 DAY 7 8 19 6 13 1 24 1 14 8 13 4 MONTHLY TOTAL PRECIPITATION IN MM. 24.5 32.0 40.3 19.3 15.0 6.5 7.0 2.5 2.5 2.5 1.0 2.5 155.6 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 62.2 26.2 7.7 3.9 NO. OF DAYS WITH PRECIPITATION. 4 8 6 4 9 2 3 2 2 2 1 1 44 NO. OF DAYS PRECIPITATION EQUAL 3 8 5 4 7 1 3 1 2 1 1 1 37 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 0 2 1 0 0 0 0 0 0 0 0 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 72 73 76 67 63 60 60 66 64 57 69 79 67 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 69 65 55 45 41 36 37 39 42 44 52 50 48 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 76 73 62 49 46 48 46 45 46 49 58 64 55 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 20 17 6 0 0 0 0 0 0 0 0 1 44 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 4 0 0 0 0 0 4 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 4 1 0 0 0 0 0 0 0 0 0 5 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 1 20 20 23 10 0 0 0 74 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 31 26 15 0 1 0 0 0 0 1 5 20 99 DATE OF START AND END FREEZING START = 26 OCT. END = 3 MAY IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. MEAN AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 1.2 4.8 6.4 12.1 18.0 23.2 22.0 23.5 19.8 14.5 5.6 2.9 12.8 AVERAGE OF MINIMUM TEMPERATURE IN C. -4.3 -2.2 -0.4 4.5 9.9 15.0 14.8 15.6 11.2 6.5 -0.0 -3.5 5.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 6.6 11.8 13.1 19.7 26.1 31.4 29.1 31.4 28.4 22.6 11.2 9.4 20.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.9 14.0 13.5 15.2 16.2 16.4 14.3 15.8 17.2 16.1 11.2 12.9 14.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.97 3.35 3.87 5.08 6.94 10.34 10.93 11.41 8.77 6.26 4.23 3.13 6.44 MEAN OF MIXING RATIO AT 09 GMT. 4.16 4.22 4.49 4.64 7.87 12.84 10.91 13.66 10.83 7.21 5.17 4.05 7.50 MEAN OF MIXING RATIO AT 15 GMT. 3.81 3.98 4.20 5.23 7.26 11.64 10.75 12.61 9.61 6.99 4.87 3.92 7.07 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -13.0 -6.5 -7.0 -2.5 3.0 12.0 10.0 13.0 3.5 1.0 -8.0 -8.0 -13.0 DAY 3 1 6 11 22 7 14 18 29 6 30 1 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 10.0 18.5 20.0 24.5 35.0 36.5 36.5 36.0 38.0 28.0 15.0 15.5 38.0 DAY 11 28 31 30 31 28 4 27 1 6 2 31 24 HOUR MAXIMUM PRECIPITATION IN MM. 4.5 0.0 9.5 4.0 12.0 1.8 9.0 1.0 1.5 2.0 3.0 1.0 12.0 DAY 10 ** 17 18 11 9 15 31 26 8 1 16 MONTHLY TOTAL PRECIPITATION IN MM. 6.5 0.0 25.0 11.0 13.5 1.8 23.0 1.8 1.5 3.5 11.1 1.0 99.7 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 31.6 26.4 26.4 15.6 NO. OF DAYS WITH PRECIPITATION. 2 0 3 5 2 1 4 2 1 3 7 1 31 NO. OF DAYS PRECIPITATION EQUAL 2 0 3 4 2 1 4 1 1 2 5 1 26 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 0 1 0 0 0 0 0 0 0 1 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 78 74 73 67 60 63 68 67 69 64 81 79 70 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 64 46 47 32 36 43 41 44 43 41 59 51 46 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 75 54 51 43 40 48 48 51 48 50 69 70 54 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 17 10 3 0 0 0 0 0 0 0 3 17 50 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 7 20 12 22 12 0 0 0 73 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 25 22 18 3 0 0 0 0 0 0 18 30 116 DATE OF START AND END FREEZING START = 3 NOV. END = 19 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. MEAN AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 0.3 1.7 6.4 15.9 20.1 21.6 23.6 24.2 21.2 13.0 5.6 2.4 13.0 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.9 -3.9 -0.8 7.5 11.2 13.3 15.6 16.0 13.6 6.2 -0.0 -2.1 5.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 6.5 7.3 13.5 24.3 29.0 30.0 31.5 32.4 28.8 19.7 11.3 6.9 20.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.4 11.2 14.3 16.8 17.8 16.8 15.9 16.4 15.2 13.5 11.3 9.0 14.2 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.45 3.00 3.69 6.03 7.29 8.28 9.46 9.33 8.15 6.00 3.94 3.58 5.93 MEAN OF MIXING RATIO AT 09 GMT. 3.35 3.78 4.28 5.59 6.97 7.52 9.08 9.21 7.92 6.43 4.94 4.39 6.12 MEAN OF MIXING RATIO AT 15 GMT. 3.38 3.60 3.85 5.82 7.06 7.12 8.38 8.99 8.05 6.97 4.65 4.23 6.01 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -11.5 -9.5 -8.0 -1.5 5.5 5.0 10.0 13.0 8.0 2.0 -5.0 -6.0 -11.5 DAY 12 2 4 3 12 14 26 13 26 16 12 30 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.0 15.0 21.0 28.5 34.0 36.0 35.0 36.5 35.0 26.5 18.0 9.5 36.5 DAY 1 24 24 10 26 24 1 3 8 13 2 3 24 HOUR MAXIMUM PRECIPITATION IN MM. 28.0 11.2 0.0 3.5 0.0 6.5 0.0 0.0 5.5 13.5 11.2 25.0 28.0 DAY 28 14 ** 18 ** 13 ** ** 24 15 9 11 MONTHLY TOTAL PRECIPITATION IN MM. 44.6 19.4 0.0 4.2 0.0 10.5 0.0 0.0 16.5 24.3 12.2 59.9 191.6 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 33.4 7.7 8.6 50.3 NO. OF DAYS WITH PRECIPITATION. 5 3 0 2 0 2 0 0 4 4 2 6 28 NO. OF DAYS PRECIPITATION EQUAL 4 3 0 1 0 2 0 0 4 3 2 5 24 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 1 0 0 0 0 0 0 0 1 1 3 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 75 76 70 61 56 52 53 55 58 68 76 84 65 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 55 57 43 29 27 28 32 29 32 44 56 65 41 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 71 67 47 35 33 30 32 34 39 56 63 71 48 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 24 15 8 0 0 0 0 0 0 0 3 5 55 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 1 0 0 0 0 0 1 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 11 16 27 28 16 0 0 0 98 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 30 27 21 1 0 0 0 0 0 0 18 28 125 DATE OF START AND END FREEZING START = 8 NOV. END = 3 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. MEAN AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 0.3 2.9 9.0 15.7 18.7 22.1 23.3 23.9 20.2 14.4 7.8 3.3 13.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.2 -4.0 1.8 7.7 10.3 14.1 16.0 15.6 12.3 7.0 1.1 -2.0 6.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 5.8 9.8 16.1 23.7 27.0 30.1 30.5 32.1 28.1 21.8 14.5 8.5 20.7 DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.0 13.8 14.3 16.0 16.7 16.0 14.5 16.5 15.8 14.8 13.4 10.5 14.4 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.71 2.88 4.36 6.57 8.29 9.87 8.87 9.21 6.84 6.36 3.97 3.57 6.12 MEAN OF MIXING RATIO AT 09 GMT. 3.68 3.27 3.96 6.55 8.52 11.01 8.32 9.19 6.78 6.73 3.70 4.28 6.33 MEAN OF MIXING RATIO AT 15 GMT. 3.50 3.31 3.80 6.36 8.36 10.36 8.68 9.18 7.38 6.79 3.99 4.13 6.32 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -14.0 -10.0 -7.0 3.0 7.0 6.5 10.5 10.0 5.0 3.0 -8.0 -7.0 -14.0 DAY 29 1 12 11 1 2 20 14 22 11 20 22 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 11.0 14.5 22.0 28.0 36.0 37.0 37.0 37.0 33.5 29.0 21.0 14.0 37.0 DAY 13 28 31 6 16 7 9 21 8 1 5 31 24 HOUR MAXIMUM PRECIPITATION IN MM. 4.0 9.5 20.6 3.8 1.5 0.0 11.0 1.5 1.5 0.0 0.8 6.0 20.6 DAY 5 19 26 30 20 ** 19 10 18 ** 9 2 MONTHLY TOTAL PRECIPITATION IN MM. 4.0 10.0 28.1 5.6 2.5 0.0 12.4 2.5 1.5 0.0 0.8 16.4 83.8 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 50.2 9.7 19.6 20.5 NO. OF DAYS WITH PRECIPITATION. 1 2 5 2 2 0 2 2 1 0 1 4 22 NO. OF DAYS PRECIPITATION EQUAL 1 1 3 2 2 0 2 2 1 0 0 4 18 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 1 0 0 0 1 0 0 0 0 0 2 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 77 73 69 68 64 59 52 56 53 67 67 80 65 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 61 42 35 35 37 41 30 31 29 40 36 58 40 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 74 52 40 42 45 46 38 37 40 53 49 72 49 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 21 16 2 0 0 0 0 0 0 0 6 6 51 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 2 0 0 0 0 0 3 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 1 0 0 0 0 0 0 0 0 0 0 0 1 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 7 17 19 23 12 0 0 0 78 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 31 25 8 0 0 0 0 0 0 0 10 24 98 DATE OF START AND END FREEZING START = 3 NOV. END = 20 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. MEAN AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 1.0 4.0 8.7 11.6 16.9 22.1 23.8 24.9 21.6 17.0 7.6 -1.2 13.2 AVERAGE OF MINIMUM TEMPERATURE IN C. -4.5 -2.4 0.8 5.3 9.0 13.8 16.5 17.2 12.7 9.2 0.9 -5.9 6.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 6.5 10.4 16.5 17.9 24.9 30.4 31.0 32.5 30.5 24.8 14.4 3.6 20.3 DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.0 12.8 15.7 12.6 15.9 16.6 14.5 15.3 17.8 15.6 13.5 9.5 14.2 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.80 3.31 3.87 5.83 6.90 7.45 8.65 9.68 6.53 6.03 4.34 2.54 5.66 MEAN OF MIXING RATIO AT 09 GMT. 3.67 3.58 3.93 6.21 6.78 7.34 8.08 9.44 7.31 6.45 4.44 3.42 5.89 MEAN OF MIXING RATIO AT 15 GMT. 3.41 3.49 3.94 5.51 6.79 7.70 8.28 9.99 7.21 6.78 4.57 3.05 5.89 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -13.0 -8.0 -10.0 -1.0 2.0 8.5 12.0 9.0 8.0 3.0 -5.0 -13.0 -13.0 DAY 13 17 7 6 2 23 2 14 26 23 30 5 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.0 17.0 25.0 28.0 32.5 36.0 36.5 38.0 35.0 30.0 19.5 10.0 38.0 DAY 1 26 27 19 25 13 17 9 12 10 11 9 24 HOUR MAXIMUM PRECIPITATION IN MM. 6.5 8.4 4.2 13.0 11.0 0.8 0.4 5.0 10.5 0.4 6.0 12.0 13.0 DAY 8 20 21 13 4 4 24 13 25 15 13 14 MONTHLY TOTAL PRECIPITATION IN MM. 17.4 15.9 7.6 40.5 12.4 0.8 0.4 5.0 10.7 0.4 6.8 32.4 150.3 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 27.2 35.7 10.7 26.3 NO. OF DAYS WITH PRECIPITATION. 4 3 3 9 3 1 1 1 2 1 2 8 38 NO. OF DAYS PRECIPITATION EQUAL 4 3 2 7 2 0 0 1 1 0 1 6 27 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 1 1 0 0 0 1 0 0 1 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 72 75 64 75 62 47 48 57 47 53 75 73 62 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 58 45 33 49 35 27 28 31 26 32 41 64 39 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 68 55 39 50 42 34 35 40 32 42 60 72 47 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 17 9 6 0 0 0 0 0 0 0 2 22 56 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 2 2 0 0 0 0 4 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 1 1 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 6 16 19 25 21 1 0 0 88 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 25 25 13 2 0 0 0 0 0 0 14 27 106 DATE OF START AND END FREEZING START = 16 NOV. END = 14 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. MEAN AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 1.3 3.2 6.0 ***** ***** 21.7 26.4 23.3 19.2 16.6 6.6 0.7 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -4.5 -1.9 -0.2 ***** ***** 13.7 19.1 15.4 11.5 8.3 0.0 -4.7 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.0 8.3 12.2 ***** ***** 29.6 33.7 31.1 27.0 24.9 13.1 6.1 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.5 10.1 12.4 ***** ***** 15.9 14.6 15.7 15.5 16.6 13.1 10.8 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.80 3.57 4.21 ***** ***** 8.38 10.44 9.08 7.60 5.77 3.91 2.88 ***** MEAN OF MIXING RATIO AT 09 GMT. 4.26 4.80 5.82 ***** ***** 7.86 10.11 8.69 7.89 6.26 4.85 4.61 ***** MEAN OF MIXING RATIO AT 15 GMT. 4.01 4.43 5.32 ***** ***** 8.08 9.73 9.32 8.09 6.76 4.49 3.90 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -7.5 -8.0 -10.0 ***** ***** 5.0 13.0 12.0 4.5 5.0 -8.0 -12.0 ****** DAY 19 13 3 ** ** 7 5 31 27 7 23 12 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 11.0 13.0 19.0 ***** ***** 35.0 39.5 37.0 32.0 30.0 20.0 12.5 ****** DAY 9 10 20 ** ** 23 18 11 6 4 1 20 24 HOUR MAXIMUM PRECIPITATION IN MM. 4.5 16.8 24.0 ***** ***** 2.0 0.0 6.0 0.4 3.0 3.0 7.0 ****** DAY 29 5 8 ** ** 2 ** 23 25 28 4 7 MONTHLY TOTAL PRECIPITATION IN MM. 7.3 27.5 50.2 ***** ***** 2.0 0.0 7.7 0.4 3.5 6.5 11.5 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 72.9 1.7 6.9 18.4 NO. OF DAYS WITH PRECIPITATION. 4 5 3 *** *** 1 0 3 1 2 3 3 *** NO. OF DAYS PRECIPITATION EQUAL 2 5 3 *** *** 1 0 2 0 1 3 3 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 2 *** *** 0 0 0 0 0 0 0 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 77 81 76 *** *** 56 54 56 61 52 72 77 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 64 65 61 *** *** 29 30 30 35 32 49 73 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 77 76 68 *** *** 39 34 41 44 44 61 76 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 22 4 5 *** *** 0 0 0 0 0 8 15 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 *** *** 0 7 0 0 0 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 *** *** 0 0 0 0 0 0 3 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 *** *** 15 29 21 8 1 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 *** *** 0 0 0 0 0 0 0 *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 *** *** 0 0 0 0 0 0 0 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 31 26 16 *** *** 0 0 0 0 0 15 31 *** DATE OF START AND END FREEZING START = 5 NOV. END = 31 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. MEAN AND EXTREMES FOR THE PERIOD 1996 TO 2003 PAGE 1 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPE. IN C. 0.6 2.5 6.4 13.4 17.8 22.2 24.1 24.0 20.3 14.6 6.9 2.3 12.9 SD OF MEAN DAILY TEMPERATURE IN C. 0.75 1.63 1.92 1.97 1.21 0.60 1.48 0.70 0.79 1.74 1.51 2.02 1.36 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.1 -3.7 -0.2 6.0 9.8 14.1 16.7 15.9 12.1 6.9 0.3 -3.3 5.8 AVERAGE OF MAXIMUM TEMPERATURE IN C. 6.2 8.7 13.0 20.7 25.8 30.3 31.5 32.0 28.5 22.3 13.4 8.0 20.0 DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.3 12.4 13.2 14.7 16.0 16.2 14.8 16.1 16.4 15.4 13.0 11.3 14.2 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.70 3.04 3.95 5.71 7.36 9.21 10.07 9.87 7.67 5.95 4.08 3.20 6.06 MEAN OF MIXING RATIO AT 09 GMT. 3.81 3.92 4.65 6.09 7.71 9.64 10.09 10.64 8.73 6.84 4.96 4.26 6.77 MEAN OF MIXING RATIO AT 15 GMT. 3.50 3.67 4.23 5.77 7.41 9.41 9.78 10.46 8.48 6.77 4.64 3.93 6.50 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -14.0 -14.0 -15.0 -4.5 -1.5 5.0 10.0 9.0 3.5 -1.0 -9.0 -13.0 -15.0 YEAR - DAY 1-29 98-28 97-21 96- 5 98- 3 0-14 99-14 2-14 99-29 96-18 96-18 2- 5 97-21 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.0 18.5 25.0 29.0 36.0 37.0 39.5 38.5 38.0 30.0 22.0 18.0 39.5 YEAR - DAY 0- 1 99-28 2-27 98-17 1-16 1- 7 3-18 97-14 99- 1 2-10 98- 3 98-11 3-18 24 HOUR MAXIMUM PRECIPITATION IN MM. 28.0 16.8 32.0 14.3 12.0 8.7 11.0 6.0 10.5 13.5 11.2 25.0 32.0 YEAR - DAY 0-28 3- 5 96-23 96-15 99-11 97- 9 1-19 3-23 2-25 0-15 0- 9 0-11 96-23 MONTHLY TOTAL PRECIPITATION IN MM. 15.2 15.0 30.8 17.4 11.9 5.6 5.4 2.4 4.1 5.4 6.2 16.7 136.1 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 44.8 25.8 8.7 20.7 NO. OF DAYS WITH PRECIPITATION. 3 3 4 4 4 2 1 1 1 2 3 3 31 NO. OF DAYS PRECIPITATION EQUAL 2 3 4 4 4 2 1 1 1 1 2 3 28 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 1 0 0 0 0 0 0 0 0 1 2 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 74 73 71 67 61 57 56 59 58 59 73 78 66 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 61 54 49 40 37 35 34 35 35 40 49 60 44 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 72 63 54 45 43 43 39 41 42 51 60 71 52 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 21 13 6 0 0 0 0 0 0 0 5 13 58 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 2 0 0 0 0 0 2 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 1 0 0 0 0 0 0 0 0 0 1 2 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 6 18 23 24 13 0 0 0 84 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 29 25 16 2 0 0 0 0 0 1 15 27 115 DATE OF START AND END FREEZING START = 18 OCT. END = 3 MAY IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION BASTAM LATITUDE 36 29 N DATA PROCESSING CENTER LONGITUDE 55 0 E ELEVATION 1366 MET. MEAN AND EXTREMES FOR THE PERIOD 1996 TO 2003 PAGE 2 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE DRY BULB TEMPERATURE. IN C. 0.9 3.3 7.4 14.6 19.6 24.1 25.8 25.6 21.9 16.3 7.6 2.7 14.1 AVERAGE DEW POINT TEMPERATURE. IN C. -4.5 -3.6 -1.1 3.4 7.1 10.4 11.3 11.7 8.4 5.1 -0.2 -2.7 3.8 AVERAGE OF MIXING RATIO IN G/KG 3.33 3.54 4.27 5.85 7.49 9.41 9.97 10.32 8.29 6.51 4.55 3.79 6.45 AVERAGE OF VAPOUR PRESSURE HPA 4.57 4.85 5.87 8.05 10.29 12.93 13.69 14.16 11.39 8.95 6.25 5.19 8.85 AVERAGE OF SATURATION DEFICIT IN HPA 2.29 3.35 5.16 9.66 13.68 18.31 20.57 19.89 16.15 10.45 4.75 2.61 10.57 AVERAGE RELATIVE HUMIDITY IN PERCENT 69 63 58 50 47 45 43 45 45 50 61 69 54 AVERAGE OF MAXIMUM RELATIVE HUMIDITY(%) 80 76 73 67 62 58 57 59 59 61 74 80 67 AVERAGE OF MINIMUM RELATIVE HUMIDITY(%) 58 52 46 38 35 34 33 34 34 39 48 58 42 NO. OF DAYS PRECIPITATION EQUAL 1 1 2 1 1 0 1 0 0 0 0 1 8 OR MORE THAN 5 MM.