IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 1 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. AVERAGE OF MEAN DAILY TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MAX-MIN 1967 ****** ****** ****** ****** 16.0 17.2 19.5 21.2 17.6 14.3 11.3 7.2 ****** 1968 6.1 2.0 8.6 7.2 13.5 16.6 20.0 20.7 18.9 15.3 10.5 6.4 18.7 1969 -0.2 0.3 6.6 9.6 14.3 18.9 17.2 19.0 16.5 13.7 8.1 7.6 19.2 1970 2.2 6.0 7.1 11.4 ****** 15.4 19.1 18.6 15.9 14.0 12.0 2.6 ****** 1971 1.3 2.1 6.1 8.1 14.8 17.0 20.3 20.1 18.2 14.4 9.9 2.6 19.1 1972 -4.8 -5.0 0.5 11.7 10.1 17.6 20.0 20.1 19.6 18.1 12.7 0.8 25.1 1973 -1.2 5.6 5.2 7.8 10.9 12.3 15.1 21.1 19.1 14.5 7.3 3.8 22.3 1974 -1.6 -4.4 2.3 8.2 15.6 19.1 18.3 20.2 16.9 13.1 9.2 2.3 24.6 1975 0.3 3.1 6.6 12.8 16.2 19.8 23.6 21.7 19.4 12.9 7.1 3.4 23.3 1976 2.8 0.2 1.8 10.9 14.1 18.0 19.8 22.3 18.0 10.1 5.4 2.6 22.1 1977 -7.4 3.3 7.1 11.0 14.6 19.1 18.0 20.5 18.2 11.4 7.3 2.4 27.9 1978 -0.9 3.2 7.3 12.4 12.4 15.3 20.0 20.1 20.2 15.5 4.5 6.8 21.1 1979 3.6 5.4 5.4 13.0 14.2 18.1 21.0 20.9 19.7 16.2 10.7 4.4 17.4 1980 1.1 0.1 5.2 13.7 15.5 18.7 21.9 19.6 18.2 13.6 11.9 5.6 21.8 1981 4.8 2.6 5.2 9.1 14.4 18.9 20.5 21.3 17.6 12.4 9.8 3.6 18.7 1982 -1.8 -1.4 -0.8 9.9 12.8 16.4 20.7 18.5 17.2 12.2 2.4 -0.1 22.5 1983 -0.9 2.4 1.0 9.8 14.9 16.1 17.9 18.3 15.8 13.9 11.6 3.3 19.1 1984 0.2 -1.6 3.3 11.3 11.1 16.2 20.0 19.8 17.7 12.7 8.8 0.2 21.6 1985 3.2 2.7 2.9 10.4 15.7 20.5 18.7 20.4 20.0 13.6 8.2 3.6 17.8 1986 2.3 3.0 0.6 8.1 13.4 15.6 20.2 20.4 18.7 14.7 6.0 2.4 19.8 1987 4.5 1.2 2.9 8.8 15.6 19.9 21.8 20.3 16.5 8.9 6.0 4.1 20.5 1988 1.7 2.4 5.3 8.3 12.6 19.7 19.7 15.9 16.7 11.4 7.6 ****** ****** 1989 -0.3 1.3 3.9 7.4 11.8 14.9 18.9 19.0 18.9 15.1 8.8 4.5 19.3 1990 0.9 1.3 4.6 6.9 11.2 16.9 16.9 14.4 17.5 14.1 10.0 6.1 16.6 1991 1.8 1.0 4.9 9.5 12.9 16.5 18.2 16.8 15.6 9.8 5.4 2.3 17.2 1992 0.4 0.8 2.4 8.2 11.3 16.0 18.4 17.4 14.4 14.3 11.1 5.9 18.0 1993 3.6 2.7 3.3 7.2 11.8 19.2 20.6 22.1 18.6 13.3 5.7 5.7 19.4 1994 4.3 2.0 6.3 ****** 16.6 18.2 19.9 20.1 18.0 15.7 12.7 5.0 ****** 1995 4.5 4.0 6.5 9.1 15.0 17.8 18.8 20.6 18.4 12.2 12.0 6.4 16.6 1996 3.3 2.6 4.3 10.1 13.5 15.2 19.4 17.7 18.1 14.8 8.9 9.1 16.8 1997 6.5 4.5 5.1 12.7 16.3 19.2 20.6 22.0 19.9 15.5 11.1 7.0 17.5 1998 3.7 4.4 8.6 13.6 16.3 20.2 21.3 22.4 19.3 15.8 13.8 9.5 18.7 1999 5.6 8.3 8.0 9.6 14.0 17.8 18.4 20.8 17.9 14.6 8.5 7.4 15.2 2000 4.5 5.5 7.4 16.3 17.0 19.8 23.2 23.9 21.2 14.0 8.7 7.8 19.4 2001 3.8 8.2 11.8 14.9 18.8 20.8 21.8 23.4 20.5 15.4 12.3 10.2 19.6 2002 6.1 7.9 12.0 12.5 15.5 20.6 23.8 22.8 21.8 19.0 11.8 2.9 20.9 2003 6.5 5.9 7.1 12.2 16.1 18.3 20.8 23.3 20.2 19.2 10.9 8.3 17.4 MEAN 2.0 2.6 5.2 10.4 14.2 17.8 19.8 20.2 18.3 14.0 9.2 4.8 18.2 SD 3.14 3.01 2.91 2.37 2.03 1.93 1.82 2.07 1.61 2.22 2.68 2.63 2.37 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 2 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. AVERAGE OF MINIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1967 ****** ****** ****** ****** 11.0 11.9 15.4 16.1 12.6 8.0 6.0 1.4 ****** 1968 -0.2 -3.2 2.3 1.6 8.0 11.6 14.5 15.5 11.8 8.9 4.8 1.3 6.4 1969 -5.8 -6.4 0.9 3.8 7.8 11.6 11.8 13.0 9.8 6.9 1.0 1.0 4.6 1970 -4.8 -0.9 -0.0 4.6 6.8 6.8 10.9 11.0 8.2 6.6 3.4 -6.6 3.8 1971 -7.9 -7.7 -3.6 0.4 7.3 10.1 12.5 13.6 10.3 7.8 2.6 -6.7 3.2 1972 -13.4 -14.6 -8.6 2.4 2.0 9.8 12.5 12.3 12.0 9.4 5.3 -6.9 1.8 1973 -10.9 -1.9 -1.4 1.5 4.1 5.2 7.8 12.3 10.9 6.5 -0.1 -4.1 2.5 1974 -10.5 -14.8 -6.2 1.7 8.3 11.5 11.4 12.7 9.4 5.4 1.1 -7.7 1.9 1975 -11.3 -4.6 -2.0 4.8 7.5 10.6 13.5 11.9 10.4 4.5 -1.5 -4.0 3.3 1976 -5.4 -7.5 -7.1 3.1 6.4 9.8 12.2 12.9 9.4 1.1 -3.4 -5.7 2.1 1977 -16.3 -5.9 -1.6 2.0 7.4 11.1 10.1 11.8 10.3 3.2 -1.8 -6.4 2.0 1978 -9.6 -5.4 -2.1 3.3 3.9 5.8 9.8 9.9 9.1 5.9 -4.1 -2.3 2.0 1979 -5.1 -4.0 -4.6 3.6 5.4 9.1 11.6 11.2 9.3 5.9 0.7 -5.3 3.2 1980 -8.6 -8.0 -4.9 4.2 6.2 8.7 11.2 10.2 9.0 4.6 3.0 -4.0 2.6 1981 -4.4 -7.6 -5.7 -0.7 5.2 9.6 11.3 12.7 8.1 3.1 0.3 -5.8 2.2 1982 -11.2 -9.8 -10.5 -0.5 3.0 6.0 10.5 10.2 9.0 4.1 -6.4 -9.3 -0.4 1983 -9.2 -7.2 -6.7 1.8 5.9 7.9 8.2 9.1 7.4 5.4 3.9 -4.4 1.8 1984 -6.9 -8.3 -3.5 2.6 3.5 7.6 10.4 11.5 9.8 3.8 0.4 -6.6 2.0 1985 -4.3 -3.8 -4.2 2.6 7.2 11.1 9.9 11.0 10.8 5.6 0.8 -4.0 3.6 1986 -5.4 -4.7 -6.3 0.4 5.6 7.8 10.7 10.9 9.1 6.4 -2.5 -6.3 2.1 1987 -5.0 -7.2 -6.3 -1.0 5.2 10.3 11.2 10.0 7.6 0.1 -3.5 -5.2 1.4 1988 -7.1 -6.2 -3.7 -1.8 2.7 9.8 10.3 6.7 7.5 2.5 -2.7 ****** ****** 1989 -8.8 -8.1 -6.5 -2.2 2.0 4.9 7.4 7.5 8.0 4.2 -1.4 -6.1 0.1 1990 -9.1 -8.6 -5.5 -2.9 1.4 4.4 5.2 4.4 5.4 4.1 -0.4 -5.1 -0.6 1991 -7.8 -7.5 -5.8 -1.4 1.5 5.1 6.9 5.2 4.0 -1.8 -6.1 -8.0 -1.3 1992 -9.9 -9.4 -7.3 -0.7 1.3 5.9 7.9 6.5 4.8 4.4 1.8 -3.7 0.1 1993 -6.1 -7.7 -5.1 -1.2 3.4 10.3 10.0 13.2 10.4 4.9 0.0 -0.9 2.6 1994 -2.1 -4.1 -1.1 ****** 7.7 9.5 11.3 12.2 9.8 8.0 4.6 -1.3 ****** 1995 -2.4 -2.5 -0.7 1.1 5.5 7.7 8.9 10.6 8.9 3.8 3.6 0.0 3.7 1996 -2.5 -3.2 -1.9 1.8 4.1 5.5 7.5 8.2 8.7 6.9 2.5 2.1 3.3 1997 0.5 -1.6 -0.8 3.5 6.3 9.3 11.2 12.2 10.8 6.8 3.3 1.3 5.2 1998 -1.2 -1.0 1.6 5.4 8.8 11.3 13.0 14.2 11.9 9.2 7.4 3.9 7.0 1999 1.1 2.2 2.2 2.9 5.7 9.9 9.6 10.7 10.3 7.4 2.9 1.9 5.6 2000 0.3 0.3 1.8 7.8 10.5 13.6 16.2 17.2 16.0 8.8 4.2 3.2 8.3 2001 -0.9 3.3 5.6 8.5 12.3 15.3 16.7 17.8 14.5 10.3 7.2 5.3 9.7 2002 1.4 2.0 5.6 7.2 10.2 14.8 17.9 18.1 15.8 12.4 6.7 -1.3 9.2 2003 1.6 1.0 1.4 7.4 10.2 13.6 17.1 17.8 15.4 13.2 6.2 4.7 9.1 MEAN -5.8 -5.1 -2.8 2.2 6.0 9.3 11.2 11.7 9.9 5.9 1.4 -2.8 3.4 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 3 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. AVERAGE OF MAXIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1967 ****** ****** 13.5 15.9 21.0 23.0 23.6 26.2 22.5 20.5 16.7 13.1 ****** 1968 12.3 7.3 14.9 12.8 19.1 21.5 25.6 25.8 26.0 21.7 16.3 11.4 17.9 1969 5.3 7.1 12.3 15.5 20.7 26.3 22.7 25.0 23.2 20.4 15.1 14.3 17.3 1970 9.2 13.0 14.3 18.2 ****** 24.0 27.2 26.2 23.6 21.5 20.7 11.9 ****** 1971 10.4 12.0 15.7 15.8 22.2 23.9 28.1 26.6 26.1 21.1 17.2 11.8 19.2 1972 3.7 4.6 9.6 21.0 18.1 25.5 27.5 27.9 27.2 26.8 20.2 8.6 18.4 1973 8.5 13.2 11.9 14.0 17.8 19.5 22.5 29.9 27.3 22.5 14.6 11.7 17.8 1974 7.4 6.0 10.8 14.6 22.9 26.7 25.2 27.8 24.4 20.8 17.2 12.2 18.0 1975 11.9 10.8 15.2 20.8 24.9 29.0 33.7 31.5 28.3 21.3 15.6 10.8 21.2 1976 11.0 7.8 10.7 18.7 21.8 26.2 27.3 31.6 26.6 19.0 14.3 11.0 18.8 1977 1.6 12.6 15.8 20.0 21.8 27.0 25.9 29.2 26.0 19.6 16.4 11.3 18.9 1978 7.8 11.8 16.7 21.4 20.9 24.8 30.1 30.4 31.3 25.0 13.0 15.9 20.8 1979 12.2 14.7 15.3 22.4 23.0 27.1 30.4 30.6 30.1 26.6 20.6 13.8 22.2 1980 10.9 8.2 15.3 23.2 24.8 28.7 32.5 29.0 27.3 22.5 20.7 15.2 21.5 1981 14.1 12.6 16.0 19.0 23.6 28.2 29.6 29.9 26.9 21.8 19.2 13.0 21.2 1982 7.6 7.0 8.8 20.3 22.6 26.8 31.0 26.7 25.5 20.3 11.3 9.0 18.1 1983 7.4 12.0 8.8 17.7 24.0 24.4 27.6 27.4 24.2 22.3 19.3 10.9 18.8 1984 7.3 5.2 10.1 20.0 18.8 24.8 29.5 28.0 25.5 21.7 17.1 6.9 17.9 1985 10.6 9.1 10.0 18.0 24.2 29.8 27.4 29.7 29.3 21.5 15.5 11.3 19.7 1986 10.1 10.7 7.4 15.8 21.1 23.4 29.6 29.9 28.3 23.0 14.6 11.1 18.8 1987 14.0 9.5 12.1 18.6 26.0 29.5 32.3 30.6 25.5 17.8 15.4 13.4 20.4 1988 10.4 11.0 14.3 18.5 22.5 29.6 29.2 25.0 25.9 20.4 17.8 ****** ****** 1989 8.3 10.7 14.2 17.0 21.7 24.8 30.4 30.4 29.9 25.9 19.1 15.2 20.6 1990 10.9 11.3 14.7 16.8 20.9 29.4 28.6 24.4 29.7 24.0 20.4 17.2 20.7 1991 11.5 9.4 15.5 20.5 24.2 27.9 29.4 28.4 27.3 21.3 17.0 12.6 20.4 1992 10.7 11.0 12.0 17.1 21.3 26.0 29.0 28.4 24.1 24.1 20.3 15.5 20.0 1993 13.3 13.1 11.7 15.6 20.2 27.9 31.1 31.0 26.8 21.7 11.2 12.2 19.7 1994 10.7 8.1 13.8 ****** 25.6 26.8 28.5 28.0 26.3 23.4 20.8 11.2 ****** 1995 11.3 10.4 13.6 17.0 24.5 27.8 28.7 30.6 27.9 20.5 20.5 12.7 20.5 1996 9.1 8.3 10.4 18.3 22.8 24.8 31.3 27.3 27.6 22.7 15.4 16.0 19.5 1997 12.5 10.6 11.0 21.9 26.4 29.1 30.1 31.7 29.1 24.2 18.8 12.9 21.5 1998 8.5 9.8 15.6 21.7 23.8 29.1 29.5 30.7 26.7 22.4 20.3 15.1 21.1 1999 10.2 14.3 13.8 16.4 22.3 25.7 27.1 30.9 25.6 21.7 14.1 12.9 19.6 2000 8.8 10.6 13.0 24.8 23.5 26.1 30.3 30.6 26.4 19.2 13.2 12.4 19.9 2001 8.4 13.1 18.0 21.4 25.4 26.3 27.0 29.0 26.4 20.6 17.4 15.0 20.7 2002 10.8 13.7 18.5 17.7 20.8 26.5 29.7 27.5 27.8 25.5 16.8 7.0 20.2 2003 11.4 10.6 12.5 16.9 22.0 22.9 24.6 28.9 24.9 25.3 15.5 11.9 18.9 MEAN 9.7 10.3 13.2 18.5 22.4 26.2 28.5 28.7 26.7 22.2 17.0 12.5 19.7 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 4 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. DIFFERENCE BETWEEN AVERAGE MAXIMUM AND MINIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1967 ****** ****** ****** ****** 10.0 11.1 8.2 10.1 9.9 12.5 10.7 11.7 ****** 1968 12.5 10.5 12.6 11.2 11.1 9.9 11.1 10.3 14.2 12.8 11.5 10.1 11.5 1969 11.1 13.5 11.4 11.7 12.9 14.7 10.9 12.0 13.5 13.5 14.1 13.3 12.7 1970 14.0 13.9 14.3 13.6 ****** 17.2 16.3 15.2 15.4 14.9 17.3 18.5 ****** 1971 18.3 19.7 19.3 15.4 14.9 13.8 15.6 13.0 15.8 13.3 14.6 18.5 16.0 1972 17.1 19.2 18.2 18.6 16.1 15.7 15.0 15.6 15.2 17.4 14.9 15.5 16.5 1973 19.4 15.1 13.3 12.5 13.7 14.3 14.7 17.6 16.4 16.0 14.7 15.8 15.3 1974 17.9 20.7 17.0 12.9 14.6 15.2 13.8 15.1 15.0 15.4 16.1 19.9 16.1 1975 23.2 15.3 17.2 16.1 17.4 18.4 20.2 19.6 17.9 16.8 17.1 14.8 17.8 1976 16.4 15.3 17.8 15.6 15.4 16.5 15.1 18.7 17.2 17.9 17.7 16.7 16.7 1977 17.9 18.5 17.4 18.0 14.4 15.9 15.8 17.4 15.7 16.4 18.2 17.7 16.9 1978 17.4 17.2 18.8 18.1 17.0 19.0 20.3 20.5 22.2 19.1 17.1 18.2 18.7 1979 17.3 18.7 19.9 18.8 17.6 18.0 18.8 19.4 20.8 20.7 19.9 19.1 19.1 1980 19.5 16.2 20.2 19.0 18.6 20.0 21.3 18.8 18.3 17.9 17.7 19.2 18.9 1981 18.5 20.2 21.7 19.7 18.4 18.6 18.3 17.2 18.8 18.7 18.9 18.8 19.0 1982 18.8 16.8 19.3 20.8 19.6 20.7 20.5 16.5 16.5 16.2 17.7 18.3 18.5 1983 16.6 19.2 15.5 15.9 18.1 16.5 19.4 18.3 16.8 16.9 15.4 15.3 17.0 1984 14.2 13.5 13.6 17.4 15.3 17.2 19.1 16.5 15.7 17.9 16.7 13.5 15.9 1985 14.9 12.9 14.2 15.4 17.0 18.7 17.5 18.7 18.5 15.9 14.7 15.3 16.1 1986 15.5 15.4 13.7 15.4 15.5 15.6 18.9 19.0 19.1 16.6 17.1 17.4 16.6 1987 19.0 16.7 18.4 19.6 20.8 19.2 21.1 20.6 17.9 17.7 18.9 18.6 19.0 1988 17.5 17.2 18.0 20.3 19.8 19.9 18.9 18.3 18.4 17.9 20.5 ****** ****** 1989 17.1 18.8 20.7 19.2 19.7 19.9 23.0 22.9 21.9 21.7 20.5 21.3 20.6 1990 20.0 19.9 20.2 19.7 19.5 25.0 23.4 20.0 24.3 19.9 20.8 22.3 21.2 1991 19.3 16.9 21.3 21.9 22.7 22.8 22.5 23.2 23.3 23.1 23.1 20.6 21.7 1992 20.6 20.4 19.3 17.8 20.0 20.1 21.1 21.9 19.3 19.7 18.5 19.2 19.8 1993 19.4 20.8 16.8 16.8 16.8 17.6 21.1 17.8 16.4 16.8 11.2 13.1 17.0 1994 12.8 12.2 14.9 ****** 17.9 17.3 17.2 15.8 16.6 15.4 16.2 12.5 ****** 1995 13.7 12.9 14.3 15.9 19.0 20.1 19.8 20.0 19.0 16.7 16.9 12.7 16.7 1996 11.6 11.5 12.3 16.5 18.7 19.3 23.8 19.1 18.9 15.8 12.9 13.9 16.2 1997 12.0 12.2 11.8 18.4 20.1 19.8 18.9 19.5 18.3 17.4 15.5 11.6 16.3 1998 9.7 10.8 14.0 16.3 15.0 17.8 16.5 16.5 14.8 13.2 12.9 11.2 14.1 1999 9.1 12.1 11.6 13.5 16.6 15.8 17.5 20.2 15.3 14.3 11.2 11.0 14.0 2000 8.5 10.3 11.2 16.9 13.0 12.5 14.1 13.4 10.4 10.4 9.0 9.2 11.6 2001 9.3 9.8 12.4 12.9 13.1 11.0 10.3 11.2 11.9 10.3 10.2 9.7 11.0 2002 9.4 11.7 12.9 10.5 10.6 11.7 11.8 9.4 12.0 13.1 10.1 8.3 11.0 2003 9.8 9.6 11.1 9.5 11.8 9.3 7.5 11.1 9.5 12.1 9.3 7.2 9.8 MEAN 15.5 15.4 16.0 16.3 16.5 16.9 17.3 17.0 16.8 16.3 15.7 15.3 16.3 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 5 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 03 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1967 ****** ****** 5.42 5.33 8.62 9.83 12.82 13.21 10.94 7.16 6.27 3.84 ****** 1968 3.26 3.22 4.76 4.94 7.41 10.52 11.67 12.85 10.02 7.91 5.93 4.54 7.25 1969 2.59 2.30 4.41 5.65 7.94 9.99 11.01 11.48 8.98 7.51 4.53 4.35 6.73 1970 2.68 3.82 4.01 6.07 7.14 6.82 9.47 10.10 7.92 7.24 5.45 2.29 6.08 1971 1.70 1.86 2.77 4.66 7.56 9.12 10.62 11.64 8.58 7.40 5.25 2.64 6.15 1972 1.11 1.01 2.44 5.84 6.15 9.15 11.61 11.46 10.42 8.71 6.53 2.09 6.38 1973 0.83 3.24 3.62 4.54 5.69 6.77 7.72 10.83 10.01 6.92 3.87 2.86 5.58 1974 1.03 0.60 2.47 4.91 7.86 10.37 9.80 11.21 8.98 6.45 4.46 1.86 5.83 1975 1.03 2.57 3.41 5.95 7.58 9.53 11.85 10.90 9.80 5.89 3.46 2.93 6.24 1976 2.30 1.75 2.16 5.38 6.86 9.24 11.31 11.41 8.88 4.61 2.75 2.16 5.73 1977 0.57 2.17 3.44 4.83 7.61 10.27 9.21 10.72 9.54 5.51 3.61 2.14 5.80 1978 1.38 2.42 3.54 5.36 5.78 7.18 9.31 9.63 9.16 6.59 2.37 3.49 5.52 1979 ****** 3.39 3.15 5.65 6.47 9.13 10.50 10.11 9.09 7.04 4.66 2.57 ****** 1980 1.65 1.91 2.71 5.73 7.25 8.53 10.06 9.50 8.82 6.29 5.11 2.64 5.85 1981 2.72 1.65 2.18 3.89 6.47 9.24 10.58 11.40 8.20 5.28 4.31 2.29 5.68 1982 1.04 1.39 1.10 4.04 5.60 6.78 9.83 9.75 8.85 6.18 1.91 1.31 4.82 1983 1.47 1.51 2.19 4.66 6.59 7.87 8.11 8.73 7.76 6.45 5.76 2.90 5.33 1984 2.08 1.92 2.94 5.49 5.52 8.08 9.62 10.45 9.33 5.99 4.43 2.25 5.67 1985 2.91 3.01 2.85 5.34 7.45 10.20 9.50 9.93 9.85 6.64 4.60 2.90 6.27 1986 2.47 2.74 2.26 4.41 6.53 7.95 9.99 9.87 8.77 6.96 3.10 2.33 5.62 1987 2.42 2.17 2.02 3.88 6.41 9.73 10.11 9.20 7.80 4.18 3.01 2.35 5.27 1988 1.99 2.44 2.89 3.75 5.20 9.17 9.77 7.27 7.75 5.14 3.42 ****** ****** 1989 1.69 2.19 2.19 3.85 4.94 6.07 7.66 7.62 8.03 6.00 3.81 1.81 4.66 1990 1.33 1.45 2.60 3.23 4.70 6.06 6.52 6.04 6.42 5.77 4.08 2.63 4.24 1991 2.03 1.97 2.37 3.83 4.61 6.24 7.42 6.36 5.63 3.36 2.09 1.83 3.98 1992 1.53 1.49 2.08 4.14 4.20 7.02 8.05 7.25 6.37 6.09 5.12 2.99 4.69 1993 2.51 2.03 2.67 3.86 6.48 9.89 9.66 12.23 9.88 6.32 4.65 4.01 6.18 1994 3.53 2.98 3.61 ****** 7.54 8.92 10.13 10.93 9.04 7.78 6.05 4.04 ****** 1995 3.59 3.69 4.09 4.46 6.71 7.99 8.58 9.99 8.88 5.78 5.52 4.42 6.14 1996 3.51 3.26 3.66 4.73 5.73 6.44 7.48 7.99 8.31 7.30 5.20 4.73 5.69 1997 4.44 3.81 4.09 5.45 6.85 8.58 10.01 10.72 9.70 7.37 5.52 4.61 6.76 1998 3.99 4.02 4.56 6.16 7.92 9.49 10.76 11.36 9.79 8.12 6.85 5.16 7.35 1999 4.48 4.55 4.46 4.59 5.79 7.96 7.71 8.15 8.72 6.84 4.84 4.45 6.04 2000 4.22 4.24 4.39 5.53 7.75 9.88 11.08 12.21 11.91 7.93 5.56 4.64 7.45 2001 3.73 3.86 4.68 6.73 8.10 10.62 12.11 12.57 9.91 7.85 5.32 4.77 7.52 2002 3.55 3.82 4.78 6.66 8.15 10.21 13.09 14.19 10.65 8.52 5.70 3.59 7.74 2003 3.87 3.78 4.36 6.15 8.69 10.70 13.41 13.10 10.96 8.09 5.35 5.28 7.81 MEAN 2.44 2.62 3.28 5.00 6.70 8.70 9.95 10.34 9.02 6.63 4.61 3.22 6.04 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 6 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 09 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1967 ****** ****** 6.93 5.94 10.26 10.84 13.48 14.58 12.10 8.49 6.58 4.14 ****** 1968 3.72 3.70 4.62 6.17 8.55 12.50 14.01 15.13 13.52 10.56 7.47 5.04 8.75 1969 3.85 3.95 6.28 7.04 9.77 12.35 13.67 14.34 13.34 9.84 6.63 5.22 8.86 1970 4.55 4.88 5.53 8.78 11.00 12.02 14.23 15.50 13.36 9.58 9.12 4.85 9.45 1971 3.50 4.14 5.02 7.19 11.61 11.50 15.57 14.93 13.11 10.63 7.71 5.18 9.17 1972 2.83 2.93 4.41 8.68 9.07 14.57 16.90 15.57 15.74 13.52 10.41 4.13 9.90 1973 3.90 5.90 5.50 6.65 7.52 10.20 11.61 16.28 14.50 11.42 6.81 5.33 8.80 1974 3.72 2.53 5.18 7.04 11.43 14.23 14.19 14.95 13.18 10.71 9.15 5.87 9.35 1975 5.27 4.61 7.06 9.43 12.02 16.39 20.15 17.24 15.63 10.13 6.24 4.76 10.75 1976 4.59 3.48 4.17 8.32 10.56 13.31 15.67 16.71 14.16 8.03 5.93 4.41 9.11 1977 1.49 5.25 6.23 8.86 11.27 14.54 14.18 16.45 14.01 9.31 6.33 4.37 9.36 1978 3.48 4.76 6.92 9.71 9.46 11.31 15.35 15.34 15.76 11.15 5.18 6.03 9.54 1979 4.65 5.59 6.32 9.67 10.32 13.05 16.77 17.21 16.39 12.53 8.85 4.95 10.52 1980 4.53 4.13 6.40 10.21 12.32 13.66 18.86 16.33 14.08 10.93 8.92 5.72 10.51 1981 5.24 4.91 5.99 7.38 10.85 14.92 17.79 17.96 13.44 10.33 8.67 4.62 10.17 1982 2.63 3.51 3.42 8.63 10.42 13.83 17.32 15.07 13.43 9.73 4.85 3.50 8.86 1983 3.13 4.39 3.73 6.68 11.01 11.15 12.68 13.90 12.53 10.47 8.76 5.41 8.65 1984 3.67 3.14 5.14 8.44 8.66 12.02 14.98 14.55 13.48 9.70 7.82 3.42 8.75 1985 4.62 4.53 4.53 8.30 12.13 15.77 13.24 15.05 14.16 9.86 6.63 4.54 9.45 1986 4.22 4.71 3.84 6.72 10.49 11.98 16.45 16.70 13.94 10.62 6.48 4.71 9.24 1987 5.33 4.05 4.66 8.01 12.07 17.05 20.03 16.68 12.88 7.90 6.26 5.24 10.01 1988 4.45 4.45 5.31 7.62 11.10 15.78 16.59 12.36 12.90 9.67 7.16 ****** ****** 1989 3.56 4.05 5.02 6.68 9.98 11.80 14.77 13.41 13.55 12.31 8.36 6.19 9.14 1990 4.49 4.52 5.82 6.82 8.88 15.62 15.72 11.12 11.04 8.64 8.06 6.46 8.93 1991 4.91 4.69 6.53 8.62 10.66 13.45 16.49 14.99 11.35 8.53 6.31 4.57 9.26 1992 4.37 4.36 5.14 7.32 8.81 14.22 16.26 13.97 9.82 8.25 6.88 6.43 8.82 1993 5.74 5.34 5.04 5.21 9.16 14.49 16.50 16.30 13.56 8.75 5.83 5.15 9.25 1994 4.45 4.14 4.57 ****** 10.33 12.10 13.26 13.72 12.27 11.20 8.86 4.83 ****** 1995 4.42 4.98 5.06 5.85 9.34 11.50 11.99 13.56 12.43 8.42 7.63 5.19 8.36 1996 4.42 4.36 4.39 6.05 7.78 9.13 10.81 10.66 12.34 9.69 6.33 5.77 7.64 1997 5.13 4.52 4.78 6.71 9.35 11.70 13.27 16.09 14.13 11.10 7.85 5.46 9.17 1998 4.47 4.50 6.21 8.53 10.04 13.04 15.23 17.55 14.73 11.05 8.11 6.42 9.99 1999 4.70 5.14 5.21 6.06 8.33 10.85 11.37 12.57 12.45 9.63 5.84 4.98 8.10 2000 4.21 4.18 4.56 7.52 9.47 11.40 13.79 15.33 13.28 9.05 5.82 5.08 8.64 2001 3.96 3.88 5.05 8.28 9.25 11.92 13.43 14.39 13.07 9.54 6.13 5.17 8.67 2002 3.74 4.25 4.71 7.52 9.31 11.85 15.01 16.11 13.57 9.82 5.84 3.77 8.79 2003 3.88 4.04 4.96 6.80 10.29 11.99 14.38 14.17 11.83 8.98 6.30 5.45 8.59 MEAN 4.17 4.35 5.25 7.60 10.08 12.92 15.03 15.05 13.38 10.01 7.20 5.07 9.17 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 7 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 15 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1967 ****** ****** 6.19 6.17 10.57 11.21 13.57 15.01 12.48 9.47 7.50 4.41 ****** 1968 4.19 3.76 5.11 6.02 8.85 12.38 14.77 15.30 13.27 10.28 7.02 4.99 8.83 1969 3.46 3.35 5.92 6.68 9.71 13.11 13.15 14.56 12.15 9.84 5.86 5.01 8.57 1970 4.30 4.78 5.33 7.71 9.46 9.86 12.94 13.51 11.22 9.42 7.67 3.83 8.33 1971 2.53 3.33 4.33 6.05 10.05 10.94 14.34 14.12 12.24 9.40 7.01 4.01 8.20 1972 1.90 2.01 3.84 7.60 7.95 11.72 13.88 12.98 13.14 10.82 7.52 2.92 8.02 1973 1.69 4.33 4.70 5.75 6.75 8.03 9.23 13.61 12.05 8.54 5.07 3.88 6.97 1974 2.07 0.84 3.56 5.97 9.63 12.25 11.79 13.01 10.92 8.26 6.60 3.17 7.34 1975 1.62 3.53 4.82 7.84 9.76 12.81 15.62 13.71 12.27 7.48 4.86 3.56 8.16 1976 3.49 2.87 3.18 6.51 8.58 11.20 13.23 13.96 11.15 5.93 4.18 3.42 7.31 1977 1.10 3.85 4.88 6.59 9.07 12.24 11.38 13.52 11.53 6.91 4.78 3.12 7.41 1978 2.27 3.56 5.11 7.26 7.15 8.86 11.81 11.95 12.12 9.29 4.03 4.35 7.31 1979 3.56 4.56 4.60 7.45 8.24 10.63 13.58 13.93 13.08 9.90 6.52 3.48 8.29 1980 2.87 2.77 4.52 7.59 9.28 11.55 14.20 12.16 11.05 7.96 6.64 4.01 7.88 1981 3.91 3.26 4.24 5.49 8.04 12.01 13.77 14.34 11.18 7.75 6.22 3.20 7.78 1982 1.59 2.21 2.10 6.56 7.18 10.34 13.40 12.00 11.34 7.28 3.38 2.01 6.62 1983 2.40 2.96 2.72 5.51 8.76 9.52 10.40 10.84 9.48 8.58 7.33 3.99 6.87 1984 3.02 2.60 4.21 6.94 7.40 10.16 12.08 13.04 11.13 8.09 6.32 2.57 7.30 1985 3.87 4.06 3.89 6.98 10.02 12.57 11.20 12.46 12.14 8.27 5.65 4.07 7.93 1986 3.57 3.85 3.07 5.31 8.48 10.11 13.42 13.61 11.03 8.88 4.91 3.31 7.46 1987 3.88 3.31 3.33 5.96 9.01 12.93 14.22 12.73 9.98 5.88 4.89 3.86 7.50 1988 3.63 3.84 4.37 6.02 8.42 12.27 12.76 10.02 10.38 8.53 5.76 ****** ****** 1989 2.49 3.38 4.77 5.74 7.92 8.35 11.38 10.43 11.79 9.14 6.79 4.10 7.19 1990 3.00 3.66 4.81 5.22 6.27 9.87 9.23 8.41 9.93 8.04 6.69 4.92 6.67 1991 3.73 3.53 5.37 7.09 7.84 9.57 11.52 10.09 9.09 6.63 4.89 4.30 6.97 1992 3.66 3.79 3.31 4.29 5.37 8.45 9.55 8.68 8.11 7.17 5.91 4.33 6.05 1993 3.29 3.02 3.38 4.77 7.73 11.64 12.06 14.44 12.42 8.19 5.57 4.90 7.62 1994 4.26 3.69 4.51 ****** 9.52 11.27 12.32 13.34 10.99 10.09 7.91 4.62 ****** 1995 4.20 4.48 4.77 5.30 7.97 9.61 10.37 11.75 10.82 7.46 7.09 5.18 7.42 1996 4.18 4.06 4.43 6.02 6.85 7.83 9.39 9.45 10.17 8.68 6.08 5.94 6.92 1997 5.18 4.55 4.62 6.39 7.89 9.78 11.35 12.52 11.23 8.69 6.41 5.14 7.81 1998 4.26 4.32 5.06 6.77 9.06 10.93 12.30 12.91 11.11 9.10 7.70 5.81 8.28 1999 4.77 4.82 4.97 5.21 6.84 9.48 8.93 10.60 10.22 7.97 5.25 4.73 6.98 2000 4.59 4.35 4.81 6.70 9.18 10.89 14.72 16.84 14.36 9.34 6.49 5.36 8.97 2001 4.33 4.42 5.97 8.45 10.57 13.28 14.30 15.35 13.49 9.86 6.46 5.37 9.32 2002 4.33 4.70 5.57 7.88 9.73 13.01 15.99 16.28 14.66 11.15 7.05 3.92 9.52 2003 4.28 4.47 5.30 6.55 10.51 12.24 14.66 15.59 13.08 10.43 6.55 5.62 9.11 MEAN 3.38 3.64 4.48 6.40 8.53 10.89 12.51 12.90 11.54 8.62 6.13 4.21 7.77 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 8 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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 1967 ***** ** ***** ** ***** ** ***** ** 6.0 1 4.0 6 13.0 1 11.5 31 7.0 25 2.5 23 -5.5 29 -11.0 25 ***** 1968 -11.0 4 -12.5 18 -4.5 5 -5.5 2 0.2 5 7.5 10 9.0 13 12.0 27 8.0 19 2.0 28 0.5 20 -2.5 21 -12.5 1969 -14.5 25 -13.5 9 -7.5 24 -3.0 15 1.0 7 7.0 17 7.5 2 10.5 14 4.5 12 0.5 30 -7.5 16 -2.5 11 -14.5 1970 -17.5 29 -7.5 1 -9.5 10 1.0 25 3.5 8 2.5 10 7.0 5 8.0 5 4.5 12 2.0 26 0.5 20 -19.5 16 -19.5 1971 -16.5 15 -14.0 14 -11.5 6 -8.5 4 2.0 2 5.5 20 10.0 4 10.5 4 4.5 20 3.5 11 -4.5 21 -18.5 20 -18.5 1972 -20.5 23 -23.5 4 -15.5 20 -2.5 5 0.5 1 3.0 25 6.5 3 8.2 4 8.5 21 5.5 27 1.0 29 -17.0 31 -23.5 1973 -15.5 17 -8.0 3 -14.5 29 -7.0 5 1.5 16 0.5 3 4.0 5 8.5 3 7.0 27 2.5 27 -7.5 25 -15.5 31 -15.5 1974 -14.5 8 -18.0 27 -15.0 7 -6.5 4 0.5 1 7.5 8 8.5 19 9.5 25 5.5 27 2.0 29 -5.5 27 -16.5 27 -18.0 1975 -17.0 20 -11.0 13 -9.5 5 1.0 24 3.5 9 5.5 1 8.0 7 8.5 17 6.5 23 0.5 16 -10.5 30 -8.5 5 -17.0 1976 -9.5 8 -14.0 17 -11.5 10 -5.0 3 2.0 9 5.0 1 7.5 2 10.0 19 5.5 13 -4.5 20 -9.5 15 -9.5 31 -14.0 1977 -27.0 16 -11.5 27 -8.5 9 -4.0 3 4.0 7 5.5 30 5.5 6 7.5 30 7.5 30 -5.0 26 -7.5 15 -11.0 23 -27.0 1978 -14.5 14 -11.0 23 -9.0 7 -2.5 14 -2.5 3 0.5 9 6.5 5 7.0 13 5.0 27 3.0 13 -9.0 5 -8.5 24 -14.5 1979 -9.5 11 -9.5 25 -11.0 6 0.5 29 1.5 2 5.0 1 8.0 1 7.0 1 4.0 24 2.0 28 -6.0 25 -9.5 17 -11.0 1980 -15.5 25 -15.5 25 -11.0 16 1.2 19 2.5 16 5.5 19 8.5 2 7.0 31 5.0 29 0.5 21 -2.0 25 -9.0 26 -15.5 1981 -10.0 2 -12.0 22 -12.5 2 -11.0 1 2.0 26 5.0 5 7.5 4 10.0 30 3.5 25 1.0 18 -8.0 24 -11.0 25 -12.5 1982 -16.0 18 -14.5 20 -17.0 30 -10.0 1 -3.0 6 2.5 6 5.5 7 7.5 9 7.0 21 0.5 27 -12.0 27 -15.0 8 -17.0 1983 -15.0 27 -12.5 11 -12.5 6 -4.5 1 3.5 26 3.5 30 6.5 1 6.5 25 4.5 30 2.5 29 0.5 26 -14.0 21 -15.0 1984 -12.0 31 -12.5 21 -7.0 23 -2.5 4 1.5 2 3.5 23 4.0 1 7.5 12 6.5 29 -3.0 29 -7.5 27 -11.0 31 -12.5 1985 -11.0 18 -12.0 24 -14.0 10 -6.0 2 1.5 3 8.5 1 6.5 25 7.0 30 5.0 22 2.5 31 -5.0 30 -8.5 5 -14.0 1986 -11.0 22 -10.0 17 -12.0 17 -4.0 1 2.0 1 4.5 22 5.5 18 7.5 10 6.0 30 2.5 18 -8.0 26 -11.0 16 -12.0 1987 -10.0 1 -11.0 28 -11.5 2 -9.5 1 2.0 3 5.5 4 8.0 26 7.0 31 5.0 19 -6.5 28 -10.5 30 -9.5 17 -11.5 1988 -10.0 19 -11.5 6 -8.0 1 -8.5 2 -5.0 1 4.0 1 6.5 11 4.0 27 4.5 27 -1.5 23 -8.5 22 ***** ** ***** 1989 -14.0 15 -11.0 11 -10.0 13 -7.0 2 -2.5 3 0.5 1 5.0 18 5.0 3 5.0 19 1.5 22 -5.0 21 -9.0 17 -14.0 1990 -12.5 27 -12.5 3 -11.5 17 -7.5 7 -2.0 5 1.5 8 2.0 6 1.5 25 4.0 1 1.5 27 -5.0 21 -10.0 25 -12.5 1991 -11.5 25 -11.5 23 -10.0 7 -5.5 4 -2.0 1 2.0 16 3.0 28 3.0 2 0.5 18 -7.0 20 -10.0 21 -11.5 26 -11.5 1992 -12.5 18 -12.5 16 -13.0 12 -4.0 3 -4.0 2 2.0 3 4.3 24 4.0 4 2.0 29 1.0 7 -8.0 27 -7.5 4 -13.0 1993 -11.0 19 -14.0 17 -11.0 13 -4.0 23 -2.5 2 6.0 6 5.5 2 10.5 5 7.0 25 1.0 8 -6.5 30 -8.5 6 -14.0 1994 -7.5 20 -9.5 18 -6.5 1 ***** ** 5.0 8 5.5 6 9.0 2 9.5 12 7.5 18 3.5 25 1.0 26 -7.5 22 ***** 1995 -7.5 10 -8.5 24 -6.5 15 -1.5 5 2.5 13 3.0 23 5.5 5 8.5 3 3.5 22 1.0 16 -1.5 27 -3.5 13 -8.5 1996 -8.5 14 -8.5 6 -9.5 19 -3.0 4 1.5 2 3.5 5 4.5 1 5.5 18 5.5 13 3.5 20 -7.5 13 1.0 2 -9.5 1997 -7.5 29 -7.5 1 -7.5 10 -6.5 12 2.5 6 6.5 1 8.0 6 10.5 11 8.5 14 3.0 30 1.0 13 -5.6 19 -7.5 1998 -7.4 14 -7.4 16 -5.6 3 -3.0 6 2.8 3 9.6 1 10.2 3 11.8 18 9.6 28 3.8 11 3.4 13 1.0 3 -7.4 1999 -4.2 19 -2.4 4 -1.4 3 1.0 9 1.6 11 6.4 5 7.0 9 7.6 9 7.4 28 3.4 26 1.0 29 -1.8 18 -4.2 2000 -5.6 29 -6.8 8 -3.6 3 4.0 1 7.2 5 6.4 13 11.4 10 13.6 12 11.4 26 6.0 16 1.0 11 1.0 26 -6.8 2001 -9.6 29 -3.4 12 -4.4 12 4.2 1 8.6 21 11.8 10 14.4 20 14.6 29 7.0 24 3.8 30 -1.5 19 -2.4 22 -9.6 2002 -9.4 13 -5.4 17 -2.6 7 2.4 14 5.4 2 11.8 23 12.0 2 14.6 14 12.4 30 1.6 5 2.2 18 -8.2 15 -9.4 2003 -4.6 21 -6.0 18 -7.4 2 0.0 18 2.6 1 7.0 7 12.8 3 14.8 1 9.0 28 8.8 7 -1.4 16 -10.4 12 -10.4 LOW. -27.0 16 -23.5 4 -17.0 30 -11.0 1 -5.0 1 0.5 3 2.0 6 1.5 25 0.5 18 -7.0 20 -12.0 27 -19.5 16 -27.0 YEAR 1977 1972 1982 1981 1988 1973 1990 1990 1991 1991 1982 1970 1977 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 9 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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 1967 ***** ** ***** ** 22.2 14 29.2 24 27.0 27 33.5 17 27.5 7 29.5 17 27.0 14 29.0 11 24.5 23 20.0 17 ***** 1968 20.0 23 14.0 29 26.0 23 22.0 25 29.5 30 29.0 18 39.0 20 33.8 16 34.5 27 29.2 18 25.0 27 17.5 25 39.0 1969 15.0 18 18.5 28 27.0 30 26.5 1 29.4 4 35.0 24 36.0 14 32.5 21 35.0 7 32.0 7 22.5 1 23.5 23 36.0 1970 18.0 4 19.0 9 28.5 31 27.0 6 ***** ** 30.5 21 32.5 9 37.5 27 38.0 29 33.5 6 29.5 7 25.0 5 ***** 1971 22.5 2 20.5 27 24.5 18 23.5 27 28.5 6 34.0 22 35.5 21 31.5 3 32.5 9 29.0 23 20.5 15 20.5 12 35.5 1972 15.5 13 15.0 17 18.5 29 29.5 21 30.0 26 30.0 21 35.5 24 34.5 19 31.0 3 32.5 20 26.5 5 17.0 3 35.5 1973 15.0 27 20.5 19 20.0 19 19.0 28 22.5 18 27.5 13 38.5 30 39.5 21 32.5 12 28.0 6 20.5 23 19.5 2 39.5 1974 10.8 3 12.0 10 19.5 21 25.0 23 30.5 22 35.5 25 31.5 3 36.0 15 34.0 18 28.0 17 21.0 11 19.5 1 36.0 1975 15.5 1 16.0 21 25.0 27 28.5 30 31.5 20 36.0 23 45.0 26 37.0 6 38.0 6 30.0 8 25.0 21 18.5 10 45.0 1976 16.0 24 15.5 9 20.0 30 28.5 13 30.5 21 39.0 24 36.5 31 39.5 7 35.0 28 29.0 15 24.0 25 17.5 8 39.5 1977 12.0 27 19.0 19 25.0 3 26.0 15 30.0 13 34.0 11 34.5 27 38.0 25 32.5 26 31.0 3 21.5 29 18.0 5 38.0 1978 15.0 4 20.0 19 26.5 24 29.5 28 30.5 13 31.5 16 37.5 17 38.0 14 38.0 4 34.0 7 20.5 7 21.5 7 38.0 1979 25.5 5 23.5 17 24.0 22 29.5 10 29.5 15 34.0 30 36.0 26 36.0 16 39.5 7 34.0 4 31.0 2 20.5 5 39.5 1980 17.0 29 17.0 17 25.5 29 29.0 5 33.0 21 35.0 4 39.5 26 36.0 17 35.5 24 33.0 3 28.5 22 24.5 5 39.5 1981 20.5 18 19.5 9 25.0 20 27.0 16 31.0 8 36.0 23 36.0 9 34.5 17 35.0 7 27.5 15 28.0 12 19.5 6 36.0 1982 12.5 8 12.5 5 15.5 18 29.0 23 32.0 14 34.5 16 39.5 15 34.0 21 30.5 9 27.0 16 23.0 6 16.0 14 39.5 1983 16.5 23 18.5 2 16.0 27 28.0 18 30.0 9 30.0 17 32.0 14 32.0 14 28.0 21 28.0 29 24.0 18 19.0 1 32.0 1984 12.5 6 10.0 13 17.0 25 29.0 21 31.0 28 36.0 10 36.0 31 32.5 23 29.5 5 29.5 17 22.5 28 14.5 1 36.0 1985 17.0 21 16.0 5 21.0 30 27.5 29 34.0 31 36.0 19 32.5 1 34.5 4 35.0 29 30.0 18 21.0 19 18.5 19 36.0 1986 17.0 6 20.0 25 14.0 5 22.0 16 28.5 27 28.5 25 41.0 9 36.0 1 33.0 6 32.0 5 24.0 8 19.0 27 41.0 1987 20.0 30 15.0 24 20.5 3 28.0 13 32.0 27 36.0 25 37.5 15 38.0 14 30.5 9 26.5 2 24.0 6 20.5 21 38.0 1988 16.0 26 21.0 29 24.0 20 29.0 21 30.5 28 39.0 14 35.0 14 32.5 28 36.0 9 27.0 20 26.0 8 ***** ** ***** 1989 14.0 25 16.0 27 18.0 25 20.5 28 25.0 24 30.5 22 35.0 12 36.0 28 38.0 1 36.5 7 22.5 2 18.5 7 38.0 1990 15.0 18 15.0 13 18.5 8 20.0 29 26.0 29 35.5 18 35.5 19 30.5 3 38.0 14 28.0 23 25.5 3 27.0 4 38.0 1991 15.5 13 14.5 19 18.5 17 26.5 23 28.0 30 32.5 12 34.5 7 34.0 2 34.5 21 27.0 3 27.5 1 18.0 9 34.5 1992 14.5 16 15.0 21 16.5 22 24.0 27 26.0 28 30.0 17 34.0 24 32.0 13 30.0 1 36.0 10 28.0 22 21.0 16 36.0 1993 17.0 29 17.0 27 16.0 6 21.0 11 27.5 31 36.0 27 37.0 30 35.5 12 39.5 3 32.5 1 18.5 9 18.5 13 39.5 1994 24.5 4 15.5 1 24.5 29 ***** ** 33.5 28 34.0 15 36.5 24 34.0 16 31.5 12 33.0 19 31.5 4 22.5 3 ***** 1995 17.5 4 17.5 8 18.5 8 25.5 11 29.5 24 36.5 29 35.0 30 36.0 12 36.5 12 27.0 3 26.0 9 17.5 28 36.5 1996 16.5 1 15.0 24 21.0 25 26.0 30 29.5 17 31.5 29 36.0 18 34.5 1 36.0 29 33.5 25 22.0 1 24.5 29 36.0 1997 22.5 6 17.0 17 20.0 24 36.0 27 34.5 28 40.0 13 34.5 11 37.5 13 36.0 2 32.0 2 26.0 4 19.5 7 40.0 1998 15.5 4 18.0 7 24.0 29 33.5 15 32.0 28 33.5 8 34.5 10 38.0 26 35.0 1 30.0 1 27.0 6 28.5 10 38.0 1999 16.5 10 20.0 3 21.5 10 25.0 2 31.0 30 32.0 20 33.0 30 36.5 24 30.0 2 32.0 12 21.0 16 20.0 7 36.5 2000 18.0 2 18.5 23 21.0 23 30.0 22 30.0 27 35.5 5 36.0 31 38.0 3 36.0 8 29.0 26 24.0 12 23.5 31 38.0 2001 18.0 1 23.5 28 28.5 29 33.0 6 38.0 15 38.5 23 34.5 29 36.0 15 35.0 8 32.5 6 25.0 15 23.0 29 38.5 2002 21.5 1 25.5 13 28.0 26 30.0 18 34.5 24 35.0 12 34.5 12 34.5 3 33.5 28 35.0 9 26.5 12 18.5 8 35.0 2003 22.5 12 19.0 3 23.0 7 35.0 7 31.5 16 28.5 18 30.0 7 37.5 10 36.0 18 33.0 10 25.5 10 22.0 18 37.5 HIG. 25.5 5 25.5 13 28.5 31 36.0 27 38.0 15 40.0 13 45.0 26 39.5 21 39.5 7 36.5 7 31.5 4 28.5 10 45.0 YEAR 1979 2002 1970 1997 2001 1997 1975 1973 1979 1989 1994 1998 1975 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 10 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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 1967 ***** ** ***** ** 22.0 24 11.0 10 17.0 18 4.0 5 1.5 25 1.0 1 3.0 24 26.0 22 8.0 30 48.0 24 ***** 1968 11.0 19 55.0 5 12.0 17 43.0 3 8.0 17 14.0 1 6.0 12 1.5 5 3.0 17 40.0 27 10.0 21 4.0 15 55.0 1969 21.0 7 6.5 2 10.5 21 29.5 14 15.0 7 5.5 17 5.0 9 9.5 29 40.0 12 10.0 14 12.5 15 6.0 15 40.0 1970 18.0 27 5.5 14 9.5 20 10.0 24 2.5 18 6.5 10 11.0 23 1.5 7 7.0 20 8.5 23 3.5 10 23.5 15 23.5 1971 6.0 31 10.0 14 55.0 21 10.0 26 4.0 2 11.0 20 0.0 ** 0.0 ** 0.0 ** 4.5 30 19.5 11 28.5 30 55.0 1972 16.0 30 16.5 20 13.5 20 21.0 25 28.0 11 11.0 17 2.0 31 13.5 4 0.0 ** 2.5 30 10.0 8 23.0 1 28.0 1973 18.0 16 10.0 2 16.0 29 27.5 14 2.0 1 6.0 29 8.0 8 6.5 30 9.0 7 4.5 28 7.5 7 17.5 29 27.5 1974 33.5 25 22.5 19 21.5 5 19.5 11 15.0 1 14.5 12 29.0 31 4.5 1 16.0 13 8.5 7 2.0 7 15.0 23 33.5 1975 15.0 18 17.0 3 15.0 2 33.5 24 14.5 7 7.0 3 0.0 ** 4.0 18 22.5 24 12.5 17 41.0 29 23.5 31 41.0 1976 8.5 1 17.5 16 16.5 22 14.5 18 27.5 8 34.0 7 11.5 24 0.0 ** 20.5 15 32.5 4 11.5 27 23.5 31 34.0 1977 28.0 6 5.0 8 14.0 23 18.5 8 22.0 29 9.5 1 5.0 19 55.0 30 4.5 1 17.0 22 29.0 14 8.0 29 55.0 1978 15.0 21 25.0 12 9.0 13 17.0 14 11.0 23 6.0 28 0.0 ** 0.0 ** 0.0 ** 9.5 31 16.5 13 12.0 13 25.0 1979 9.0 11 18.0 18 25.0 28 0.0 ** 17.0 8 9.0 16 0.0 ** 0.0 ** 4.0 13 0.0 ** 9.0 5 33.0 16 33.0 1980 11.5 24 23.0 25 19.0 4 2.5 15 8.5 10 3.0 24 0.0 ** 5.0 30 8.0 23 22.5 21 6.0 11 12.0 26 23.0 1981 18.0 12 15.0 3 10.0 3 18.0 2 9.0 15 17.0 25 12.0 21 4.0 16 18.0 24 19.0 19 22.0 30 15.0 26 22.0 1982 13.0 29 15.0 18 20.5 25 9.0 22 8.0 27 6.0 27 0.0 ** 2.8 10 7.0 29 25.0 9 20.0 11 8.0 30 25.0 1983 13.0 13 14.0 17 15.0 23 9.0 25 18.0 24 10.0 3 0.0 ** 4.0 29 17.0 14 14.0 7 6.0 26 18.0 12 18.0 1984 23.0 29 5.0 6 8.0 16 7.0 18 11.0 21 3.0 13 0.0 ** 6.5 3 7.0 18 19.0 7 7.0 15 9.0 1 23.0 1985 24.0 24 14.0 27 10.0 9 9.0 27 14.0 22 4.0 17 2.0 16 9.0 28 4.0 19 11.0 11 7.0 27 13.0 4 24.0 1986 35.0 21 8.0 11 17.0 8 24.0 20 18.0 4 6.5 12 0.0 ** 20.0 5 23.0 30 7.0 12 7.0 11 11.0 31 35.0 1987 4.0 7 6.5 11 7.0 2 14.0 5 9.0 31 0.0 ** 6.0 25 14.0 6 9.0 12 29.0 9 5.0 8 16.0 31 29.0 1988 28.0 19 6.0 17 7.0 24 38.0 26 15.0 3 4.0 1 11.0 11 16.0 24 0.0 ** 9.0 22 13.0 14 ***** ** ***** 1989 18.5 2 11.0 13 14.0 22 10.0 30 8.0 20 8.0 7 16.0 16 14.0 15 8.0 21 4.0 23 7.0 1 11.0 6 18.5 1990 13.0 24 8.0 16 23.0 17 5.0 1 12.0 13 9.0 14 16.0 9 8.0 29 7.0 19 0.0 ** 15.0 13 23.0 25 23.0 1991 16.0 5 19.5 12 12.0 23 10.0 12 12.0 5 0.0 ** 0.0 ** 0.0 ** 8.0 26 9.0 12 6.0 22 10.0 26 19.5 1992 14.0 25 19.0 11 66.5 25 17.0 26 9.0 12 8.0 14 4.0 7 5.0 8 5.0 14 13.0 8 12.0 26 10.0 28 66.5 1993 42.0 15 26.0 16 20.0 23 8.0 13 5.0 8 6.0 22 2.5 9 4.5 23 7.9 8 5.0 6 12.0 29 3.4 16 42.0 1994 7.4 6 5.4 4 13.0 27 ***** ** 5.4 6 7.8 27 0.0 ** 3.4 20 4.6 4 17.4 23 12.4 26 8.0 6 ***** 1995 3.2 18 10.0 24 6.4 18 14.0 24 4.0 14 5.0 23 3.4 5 1.0 20 4.0 15 3.0 13 10.0 26 3.0 7 14.0 1996 6.0 14 9.0 29 21.0 12 11.0 4 5.4 9 14.4 27 2.0 2 4.0 13 2.0 20 8.2 16 21.0 11 3.0 15 21.0 1997 23.0 28 19.0 1 35.0 9 9.0 12 12.4 5 12.4 23 5.2 6 3.4 22 7.4 14 12.6 31 19.6 13 13.4 11 35.0 1998 54.2 13 12.5 12 14.0 18 23.0 6 9.6 31 5.4 29 17.4 24 12.6 2 6.2 14 6.4 9 0.0 ** 5.4 4 54.2 1999 6.0 18 5.2 20 9.2 17 15.6 22 6.2 11 6.2 17 21.4 15 3.2 14 14.2 27 12.4 26 18.4 1 10.6 16 21.4 2000 20.0 28 11.2 8 6.8 9 4.2 16 7.0 15 15.0 13 8.4 7 5.2 5 9.4 20 13.2 15 10.4 7 18.6 11 20.0 2001 13.4 24 6.2 4 18.0 10 3.4 9 2.2 25 3.0 19 14.2 17 6.4 11 13.4 19 20.4 2 19.4 19 6.8 21 20.4 2002 21.6 12 13.6 1 7.2 19 11.8 13 9.2 4 5.2 22 9.0 23 4.0 14 0.0 ** 9.2 22 16.2 26 17.0 22 21.6 2003 7.0 16 16.8 4 21.4 8 20.6 14 11.6 23 6.0 25 5.4 20 6.8 23 5.4 22 10.4 20 13.4 3 3.8 29 21.4 HIG. 54.2 13 55.0 5 66.5 25 43.0 3 28.0 11 34.0 7 29.0 31 55.0 30 40.0 12 40.0 27 41.0 29 48.0 24 66.5 YEAR 1998 1968 1992 1968 1972 1976 1974 1977 1969 1968 1975 1967 1992 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 11 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MONTHLY TOTAL PRECIPITATION WITH SEASONAL PERCENT. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL SEASONAL-PERCENT ----------------------- 1967 ****** ****** 51.5 60.0 26.5 9.0 4.0 1.0 12.0 61.0 19.0 55.0 ****** 17.2 31.9 5.7 45.2 1968 24.0 150.0 43.0 73.5 18.0 30.0 12.0 2.5 5.0 49.0 43.5 17.0 467.5 46.4 26.0 4.2 23.4 1969 140.0 32.0 46.0 68.0 36.5 5.5 22.0 24.0 47.5 30.5 34.0 32.0 518.0 42.1 21.2 18.1 18.6 1970 73.5 9.5 26.0 30.0 7.0 11.0 33.5 5.0 26.5 10.0 7.0 59.0 298.0 36.6 16.1 21.8 25.5 1971 16.0 29.5 93.5 55.0 23.0 12.5 0.0 0.0 0.0 7.0 41.0 58.0 335.5 41.4 27.0 0.0 31.6 1972 64.5 69.0 52.5 43.5 146.0 51.5 3.5 23.5 0.0 4.5 24.5 187.0 670.0 27.8 36.0 4.0 32.2 1973 54.0 36.5 72.0 86.0 2.0 22.0 17.5 6.5 13.0 7.0 25.5 71.0 413.0 39.3 26.6 9.0 25.1 1974 100.5 143.5 79.0 60.0 38.0 31.0 105.5 15.0 45.5 22.5 3.5 59.0 703.0 45.9 18.3 23.6 12.1 1975 75.0 61.0 61.0 70.0 58.0 15.5 0.0 4.0 44.5 31.0 78.0 96.5 594.5 33.1 24.1 8.2 34.6 1976 16.5 59.5 50.0 44.5 97.5 55.0 15.0 0.0 29.5 58.0 34.0 81.0 540.5 23.3 36.4 8.2 32.0 1977 215.0 7.5 21.0 62.0 120.5 13.5 22.4 71.0 4.5 43.6 78.5 31.5 691.0 35.2 28.4 14.2 22.2 1978 38.0 49.5 35.5 38.0 52.0 10.0 0.0 0.0 0.0 22.0 47.0 29.5 321.5 38.3 31.1 0.0 30.6 1979 42.0 62.5 51.0 0.0 42.5 13.5 0.0 0.0 7.5 0.0 13.5 105.0 337.5 46.1 16.6 2.2 35.1 1980 33.5 68.0 44.0 4.5 28.5 5.5 0.0 23.0 8.0 68.5 18.0 39.0 340.5 42.7 11.3 9.1 36.9 1981 43.0 31.0 26.0 67.0 24.0 59.8 19.0 6.0 24.5 45.5 52.0 46.5 444.3 22.5 33.9 11.1 32.4 1982 46.0 61.0 58.0 13.0 28.5 16.0 0.0 2.8 9.0 80.0 80.0 26.0 420.3 39.3 13.7 2.8 44.3 1983 40.0 16.0 29.0 34.0 84.0 30.0 0.0 6.0 45.0 21.0 11.0 36.0 352.0 24.1 42.0 14.5 19.3 1984 50.0 27.0 44.5 14.0 77.0 6.0 0.0 12.5 11.0 56.0 30.0 66.0 394.0 30.8 24.6 6.0 38.6 1985 52.5 47.0 37.0 13.0 15.0 10.0 2.0 30.0 7.0 14.0 26.0 57.0 310.5 44.0 12.2 12.6 31.2 1986 69.0 26.0 44.0 47.5 23.0 16.5 0.0 41.0 42.0 18.0 25.5 41.0 393.5 35.3 22.1 21.1 21.5 1987 13.5 26.5 49.5 50.0 28.0 0.0 19.5 15.5 10.0 98.5 8.0 40.0 359.0 24.9 21.7 12.5 40.8 1988 129.5 19.0 30.5 56.0 35.0 7.0 63.0 43.0 0.0 9.0 30.0 ****** ****** 42.4 23.2 25.1 9.2 1989 81.0 44.0 61.0 17.0 14.0 15.0 16.0 43.0 18.0 13.5 15.0 34.0 371.5 50.1 12.4 20.7 16.8 1990 84.0 33.0 90.0 9.0 12.0 9.0 66.5 15.0 7.0 0.0 20.0 78.0 423.5 48.9 7.1 20.9 23.1 1991 54.0 118.5 95.0 53.0 67.0 0.0 0.0 0.0 25.0 36.0 38.0 49.0 535.5 50.0 22.4 4.7 23.0 1992 66.0 129.0 112.0 99.0 45.0 34.0 6.0 17.5 17.0 19.0 20.0 23.0 587.5 52.3 30.3 6.9 10.6 1993 58.0 107.0 54.0 47.0 18.0 13.0 4.5 26.5 20.7 20.1 64.8 9.6 443.2 49.4 17.6 11.7 21.3 1994 11.4 40.2 54.6 ****** 13.8 30.8 0.0 6.8 28.2 50.0 30.2 24.0 ****** 36.6 15.4 12.1 35.9 1995 6.2 22.0 21.8 35.8 9.0 12.0 6.4 1.0 9.0 3.0 17.0 8.0 151.2 33.1 37.6 10.8 18.5 1996 18.0 22.0 45.0 29.6 21.8 35.6 3.0 5.0 2.0 24.6 41.0 3.0 250.6 33.9 34.7 4.0 27.4 1997 29.0 37.0 109.8 9.0 21.8 31.2 17.0 5.4 13.0 17.8 71.2 37.6 399.8 44.0 15.5 8.9 31.7 1998 113.6 46.4 28.0 58.4 49.4 17.2 41.8 45.4 33.6 16.8 0.0 13.0 463.6 40.6 27.0 26.1 6.4 1999 19.0 12.6 38.2 77.8 24.8 9.2 78.8 6.2 45.2 30.2 67.8 26.4 436.2 16.0 25.6 29.8 28.5 2000 83.4 39.2 28.4 4.2 18.0 25.6 26.8 11.4 38.0 55.8 33.4 62.0 426.2 35.4 11.2 17.9 35.5 2001 55.6 27.0 34.2 8.8 6.8 9.0 30.2 21.2 26.2 32.0 35.2 23.0 309.2 37.8 8.0 25.1 29.2 2002 35.8 42.8 44.0 53.2 28.2 8.8 36.2 28.4 0.0 24.8 67.8 78.2 448.2 27.4 20.1 14.4 38.1 2003 23.8 51.8 74.6 93.0 46.0 31.8 30.6 34.8 20.2 23.4 35.4 24.8 490.2 30.6 34.8 17.5 17.1 MEAN 57.6 50.1 52.3 44.0 38.0 19.3 19.0 16.2 18.8 30.4 34.8 48.0 428.5 37.4 23.7 12.6 26.4 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 12 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. NO. OF DAYS WITH PRECIPITATION YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1967 *** *** 6 14 4 4 3 1 7 9 6 2 *** 1968 3 6 8 6 3 8 5 2 2 5 11 7 66 1969 13 8 9 7 10 1 9 8 5 9 7 9 95 1970 10 3 7 6 3 3 6 4 9 2 3 6 62 1971 5 4 6 11 10 2 0 0 0 2 4 6 50 1972 9 9 6 3 14 8 2 4 0 2 4 18 79 1973 6 5 9 9 1 6 5 1 3 2 5 12 64 1974 16 13 8 8 5 6 12 4 8 5 2 8 95 1975 11 9 10 4 6 3 0 1 7 6 7 7 71 1976 2 10 7 6 7 4 3 0 4 4 5 6 58 1977 20 2 4 9 12 2 6 4 1 5 5 8 78 1978 6 6 6 5 10 3 0 0 0 4 7 6 53 1979 7 10 5 0 5 3 0 0 2 0 2 6 40 1980 5 6 5 2 6 2 0 8 1 9 6 7 57 1981 8 4 4 7 4 9 3 2 2 6 6 7 62 1982 7 9 8 3 5 5 0 1 2 7 11 4 62 1983 5 2 6 7 12 6 0 2 7 2 2 6 57 1984 5 8 10 4 13 3 0 3 2 5 7 13 73 1985 8 9 9 2 2 3 1 6 2 2 5 10 59 1986 4 6 8 4 3 3 0 5 3 4 6 7 53 1987 4 9 12 8 6 0 6 2 2 11 2 6 68 1988 9 4 8 7 5 2 9 7 0 1 5 *** *** 1989 10 7 8 3 2 3 1 5 3 4 3 5 54 1990 10 9 8 2 1 1 6 2 1 0 2 8 50 1991 10 12 13 8 11 0 0 0 6 6 10 10 86 1992 8 11 14 12 12 7 2 7 6 3 3 4 89 1993 4 11 11 9 5 3 2 9 6 6 12 3 81 1994 2 10 11 *** 4 7 0 3 9 10 4 5 *** 1995 2 5 6 5 3 3 3 1 3 1 3 3 38 1996 4 5 7 5 6 7 2 2 1 6 3 1 49 1997 3 6 9 1 3 6 6 2 3 2 8 5 54 1998 9 6 6 8 10 5 7 8 9 4 0 3 75 1999 5 3 8 12 5 2 8 2 6 5 10 4 70 2000 9 5 6 1 5 4 6 3 8 9 8 8 72 2001 7 7 8 4 5 5 6 6 5 5 8 6 72 2002 5 8 10 11 8 3 10 12 0 4 10 11 92 2003 6 9 13 14 12 8 10 10 6 7 6 11 112 MEAN 7 7 8 6 6 4 4 4 4 5 6 7 68 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 13 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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 1967 *** *** 6 14 4 4 3 1 6 9 6 2 *** 1968 3 6 8 6 3 8 5 2 2 5 11 7 66 1969 13 8 9 7 10 1 8 8 5 9 7 9 94 1970 10 3 7 6 3 3 6 4 9 2 3 6 62 1971 5 4 6 11 10 2 0 0 0 2 4 6 50 1972 9 9 6 3 14 8 2 4 0 2 4 18 79 1973 6 5 9 9 1 6 4 1 3 2 5 11 62 1974 16 13 8 8 5 6 12 4 8 5 2 8 95 1975 11 9 10 4 6 3 0 1 7 6 7 7 71 1976 2 10 7 6 7 4 3 0 4 4 5 6 58 1977 20 2 4 9 12 2 6 4 1 5 5 8 78 1978 6 6 6 5 10 3 0 0 0 4 7 6 53 1979 7 10 5 0 5 3 0 0 2 0 2 6 40 1980 5 6 5 2 6 2 0 8 1 9 6 7 57 1981 8 4 4 7 4 9 3 2 2 6 6 7 62 1982 7 9 8 3 5 5 0 1 2 7 11 4 62 1983 5 2 6 7 12 6 0 2 7 2 2 6 57 1984 5 8 10 4 13 3 0 3 2 5 7 13 73 1985 8 9 9 2 2 3 1 6 2 2 5 10 59 1986 4 6 8 4 3 3 0 5 3 4 6 7 53 1987 4 9 12 8 6 0 6 2 2 11 2 6 68 1988 9 4 8 7 5 2 9 7 0 1 5 *** *** 1989 10 7 8 3 2 3 1 5 3 4 3 5 54 1990 10 9 8 2 1 1 6 2 1 0 2 8 50 1991 10 12 13 8 11 0 0 0 6 6 10 10 86 1992 8 11 14 12 12 7 2 7 6 3 3 4 89 1993 4 11 11 9 5 3 2 9 6 6 12 3 81 1994 2 10 11 *** 4 7 0 3 9 10 4 5 *** 1995 2 5 6 5 3 3 3 1 3 1 3 3 38 1996 4 5 7 5 6 7 2 2 1 6 3 1 49 1997 3 6 9 1 3 6 6 2 3 2 8 5 54 1998 9 6 6 8 10 5 7 8 9 4 0 3 75 1999 5 3 8 12 5 2 8 2 6 5 10 4 70 2000 9 5 6 1 5 4 6 3 8 9 8 8 72 2001 7 7 8 4 5 5 6 6 5 5 8 6 72 2002 5 8 10 11 8 3 10 12 0 4 10 11 92 2003 6 9 13 14 12 8 10 10 6 7 6 11 112 MEAN 7 7 8 6 6 4 4 4 4 5 6 7 68 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 14 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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 1967 *** *** 2 1 1 0 0 0 0 3 0 1 *** 1968 1 4 1 2 0 1 0 0 0 1 1 0 11 1969 6 0 1 2 1 0 0 0 1 1 1 0 13 1970 3 0 0 1 0 0 1 0 0 0 0 2 7 1971 0 1 2 1 0 1 0 0 0 0 1 2 8 1972 2 3 3 3 5 1 0 1 0 0 1 8 27 1973 2 2 2 2 0 0 0 0 0 0 0 2 10 1974 2 7 3 2 2 1 3 0 2 0 0 2 24 1975 3 3 2 2 3 0 0 0 1 1 3 6 24 1976 0 1 2 2 4 2 1 0 1 2 1 3 19 1977 8 0 1 2 5 0 0 2 0 2 4 0 24 1978 2 1 0 1 1 0 0 0 0 0 1 1 7 1979 0 3 2 0 2 0 0 0 0 0 0 4 11 1980 1 3 2 0 0 0 0 0 0 3 0 1 10 1981 1 1 1 3 0 3 1 0 1 2 1 2 16 1982 3 3 2 0 0 0 0 0 0 4 3 0 15 1983 2 1 1 0 2 1 0 0 2 1 0 1 11 1984 2 0 0 0 2 0 0 0 0 3 0 0 7 1985 1 1 1 0 1 0 0 0 0 1 0 3 8 1986 3 0 1 2 1 0 0 2 2 0 0 1 12 1987 0 0 0 2 0 0 0 1 0 3 0 1 7 1988 5 0 0 1 2 0 3 1 0 0 1 *** *** 1989 3 1 2 1 0 0 1 3 0 0 0 1 12 1990 5 0 4 0 1 0 4 0 0 0 1 3 18 1991 1 7 5 2 1 0 0 0 0 0 0 1 17 1992 2 7 1 4 0 0 0 0 0 1 1 1 17 1993 1 6 1 0 0 0 0 0 0 0 2 0 10 1994 0 0 1 *** 0 0 0 0 0 1 1 0 *** 1995 0 1 0 2 0 0 0 0 0 0 1 0 4 1996 0 0 1 1 0 1 0 0 0 0 2 0 5 1997 1 1 4 0 1 1 0 0 0 1 4 2 15 1998 3 3 1 2 0 0 1 1 0 0 0 0 11 1999 0 0 0 2 0 0 3 0 2 1 2 1 11 2000 4 2 0 0 0 1 0 0 0 2 1 2 12 2001 1 0 1 0 0 0 1 0 1 1 1 0 6 2002 1 2 0 1 0 0 0 0 0 0 2 3 9 2003 0 1 2 4 1 0 0 0 0 1 1 0 10 MEAN 2 2 1 1 1 0 1 0 0 1 1 2 12 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 15 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 03 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1967 *** *** 76 69 72 72 87 86 87 73 74 58 *** 1968 52 70 65 79 73 82 77 84 78 77 77 76 74 1969 60 61 75 80 80 70 84 81 79 81 70 67 74 1970 60 65 68 75 68 64 68 74 72 79 70 45 67 1971 36 42 48 65 71 75 71 77 71 74 70 43 62 1972 35 34 53 64 70 69 74 78 78 71 69 44 62 1973 23 56 58 63 69 70 68 70 74 70 56 51 61 1974 33 26 51 69 71 76 73 78 77 74 70 40 62 1975 33 49 56 68 69 70 73 72 74 66 56 61 62 1976 49 41 48 69 67 73 78 75 74 60 48 49 61 1977 24 46 54 62 75 73 71 71 73 65 61 48 60 1978 38 47 59 63 66 68 68 70 69 64 44 58 60 1979 *** 59 49 64 63 73 71 66 69 68 60 42 *** 1980 41 48 49 63 67 65 67 68 72 68 62 46 60 1981 49 37 38 56 67 69 75 72 69 67 60 47 59 1982 30 39 30 57 65 65 69 76 77 69 39 33 54 1983 36 31 46 63 67 70 69 72 73 69 68 56 60 1984 50 52 54 69 70 73 72 77 76 67 60 58 65 1985 59 56 54 67 70 71 75 74 76 71 65 56 66 1986 51 52 55 63 68 71 70 70 71 71 50 49 62 1987 48 50 42 54 68 72 70 67 70 58 52 47 58 1988 48 53 53 55 62 68 71 73 70 68 58 *** *** 1989 46 54 46 62 65 66 69 71 74 68 61 40 60 1990 34 35 52 55 65 70 73 71 69 69 60 50 59 1991 52 48 51 57 59 63 69 71 66 51 44 44 56 1992 44 42 49 66 61 75 76 75 70 72 69 57 63 1993 60 50 56 63 81 78 78 80 77 71 75 69 70 1994 65 64 62 *** 71 77 78 80 77 73 69 67 *** 1995 65 69 68 66 68 71 72 75 77 72 69 77 71 1996 68 65 68 67 69 71 71 75 74 76 76 74 71 1997 78 73 76 70 71 75 79 77 78 74 76 77 75 1998 80 75 71 71 76 77 80 78 78 78 74 73 76 1999 79 72 72 68 67 69 67 64 75 72 73 73 71 2000 79 78 74 58 70 73 71 73 78 86 83 76 75 2001 82 66 62 74 68 74 79 76 75 78 67 65 72 2002 65 66 65 79 80 69 75 83 74 72 73 77 73 2003 73 71 75 76 78 80 86 79 82 70 74 78 77 MEAN 52 54 58 66 69 72 74 75 74 71 64 58 66 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 16 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 09 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1967 *** *** 69 52 60 58 66 60 65 54 52 42 *** 1968 42 58 46 63 57 71 62 64 58 60 60 55 58 1969 63 63 65 62 60 54 73 65 65 63 58 50 62 1970 60 51 54 62 54 62 60 68 70 61 58 52 59 1971 40 42 43 60 66 60 61 63 56 65 59 56 56 1972 52 53 59 55 66 69 70 63 67 60 67 55 61 1973 50 59 60 65 56 67 68 61 63 67 65 61 62 1974 55 42 62 65 66 64 74 66 73 69 72 64 64 1975 61 55 64 65 64 68 63 64 67 67 60 58 63 1976 58 53 55 64 67 67 71 62 67 60 59 56 62 1977 34 61 59 63 70 65 69 63 66 65 57 56 61 1978 55 57 57 62 64 62 61 63 62 64 57 57 60 1979 54 60 59 62 62 65 67 63 65 65 62 55 62 1980 55 63 60 61 65 59 65 67 67 65 61 54 62 1981 56 54 55 58 64 66 68 69 63 65 64 51 61 1982 43 61 50 62 63 67 64 69 67 66 57 50 60 1983 50 53 54 53 64 61 58 65 69 67 66 64 60 1984 57 57 65 59 65 64 60 65 67 62 65 54 62 1985 57 61 54 66 68 64 63 61 59 66 60 54 61 1986 55 58 60 62 68 71 65 65 63 66 64 59 63 1987 56 57 56 60 64 68 68 63 67 64 59 58 62 1988 58 58 57 60 67 63 69 70 69 68 60 *** *** 1989 57 57 54 58 65 65 58 56 58 64 64 61 60 1990 57 57 57 61 61 64 65 63 50 52 60 55 59 1991 58 64 62 62 62 61 68 66 57 60 55 50 60 1992 54 53 57 60 60 66 63 55 57 50 50 58 57 1993 60 58 59 49 65 64 66 65 65 58 65 58 61 1994 54 58 47 *** 55 60 61 63 62 66 62 57 *** 1995 53 62 52 50 52 54 53 54 57 59 52 56 55 1996 60 61 54 48 49 50 42 50 56 58 56 50 53 1997 54 55 58 43 46 51 53 58 59 61 59 59 55 1998 62 59 55 53 56 55 60 64 66 64 54 58 59 1999 58 51 52 52 50 53 51 45 59 58 55 52 53 2000 56 50 48 38 51 52 50 52 58 63 58 55 53 2001 57 44 44 53 47 55 57 54 56 60 49 49 52 2002 46 48 39 60 61 52 54 65 54 48 49 58 53 2003 48 52 58 63 61 64 68 54 57 44 56 61 57 MEAN 54 56 56 58 61 62 63 62 62 61 59 56 59 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 17 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 15 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1967 *** *** 74 67 76 75 85 79 85 79 76 56 *** 1968 54 69 62 75 73 85 82 84 79 79 73 68 74 1969 65 65 78 74 79 73 83 84 81 81 73 62 75 1970 71 64 69 71 66 66 73 75 77 80 72 56 70 1971 39 54 55 68 73 74 73 80 71 75 73 55 66 1972 45 47 66 65 74 73 75 73 81 73 67 51 66 1973 37 60 65 67 70 69 69 72 72 69 62 60 64 1974 46 25 57 69 72 74 76 76 79 74 72 52 64 1975 33 56 60 70 72 72 69 68 73 67 63 62 64 1976 61 55 53 63 69 72 77 72 72 60 58 58 64 1977 31 58 60 64 74 73 73 70 72 64 60 55 63 1978 49 55 61 62 63 66 68 67 66 69 60 55 62 1979 51 61 56 62 65 69 72 67 70 71 65 50 63 1980 50 55 62 62 65 66 64 68 71 64 64 55 62 1981 56 49 51 57 66 73 69 70 67 66 64 46 61 1982 35 50 42 59 59 67 68 74 74 65 51 38 57 1983 48 47 48 59 68 71 70 74 73 72 70 58 63 1984 58 57 67 69 73 75 75 78 76 72 68 52 68 1985 62 67 59 71 75 70 72 75 78 75 69 65 70 1986 61 62 62 63 70 75 71 69 71 75 63 54 66 1987 58 60 53 60 70 71 66 66 68 63 58 57 63 1988 59 63 64 62 67 66 69 72 71 77 63 *** *** 1989 51 61 67 70 70 66 74 73 78 70 68 53 67 1990 51 61 66 66 66 67 64 69 72 74 67 57 65 1991 57 60 70 71 69 70 71 68 72 65 58 67 67 1992 67 70 58 66 64 73 77 76 74 72 72 68 70 1993 59 55 61 69 85 78 79 81 81 74 77 71 73 1994 66 67 64 *** 72 79 78 81 75 77 73 68 *** 1995 64 71 67 66 66 71 72 73 76 75 72 73 71 1996 71 70 71 70 68 72 67 69 71 78 74 74 71 1997 75 73 75 68 69 72 75 76 74 73 71 73 73 1998 77 74 70 69 76 74 76 76 77 76 73 71 74 1999 76 68 71 66 64 68 67 62 70 70 70 69 68 2000 79 69 69 55 69 70 73 75 81 84 84 76 74 2001 78 64 68 72 72 79 77 76 78 82 69 65 73 2002 69 68 61 80 79 76 77 85 79 73 76 74 75 2003 67 73 80 72 77 83 84 78 82 73 78 75 77 MEAN 58 61 63 67 70 72 73 74 75 73 68 61 68 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 18 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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 1967 *** *** *** *** 0 0 0 0 0 0 1 4 *** 1968 5 12 2 3 0 0 0 0 0 0 0 0 22 1969 20 20 2 0 0 0 0 0 0 0 5 0 47 1970 16 5 5 0 0 0 0 0 0 0 0 21 47 1971 21 23 14 3 0 0 0 0 0 0 1 20 82 1972 31 29 27 0 0 0 0 0 0 0 0 20 107 1973 30 11 10 1 0 0 0 0 0 0 7 16 75 1974 31 28 20 3 0 0 0 0 0 0 1 22 105 1975 31 15 13 0 0 0 0 0 0 0 9 19 87 1976 25 25 26 1 0 0 0 0 0 1 16 24 118 1977 31 22 9 1 0 0 0 0 0 1 7 26 97 1978 31 20 13 0 0 0 0 0 0 0 19 7 90 1979 20 15 16 0 0 0 0 0 0 0 5 22 78 1980 30 28 19 0 0 0 0 0 0 0 0 18 95 1981 18 24 20 5 0 0 0 0 0 0 4 22 93 1982 31 28 31 6 0 0 0 0 0 0 23 30 149 1983 27 24 23 1 0 0 0 0 0 0 0 19 94 1984 30 29 15 0 0 0 0 0 0 0 4 28 106 1985 17 15 17 3 0 0 0 0 0 0 2 16 70 1986 24 18 27 2 0 0 0 0 0 0 18 25 114 1987 22 24 25 11 0 0 0 0 0 5 17 21 125 1988 30 21 20 8 1 0 0 0 0 0 14 *** *** 1989 31 28 29 10 0 0 0 0 0 0 3 29 130 1990 31 28 18 11 0 0 0 0 0 0 2 22 112 1991 31 26 26 8 0 0 0 0 0 11 27 29 158 1992 31 29 24 1 1 0 0 0 0 0 4 21 111 1993 25 25 20 2 0 0 0 0 0 0 3 8 83 1994 11 15 6 *** 0 0 0 0 0 0 0 5 *** 1995 7 8 2 0 0 0 0 0 0 0 0 0 17 1996 9 10 6 0 0 0 0 0 0 0 1 0 26 1997 3 5 5 1 0 0 0 0 0 0 0 1 15 1998 4 5 2 0 0 0 0 0 0 0 0 0 11 1999 1 0 0 0 0 0 0 0 0 0 0 0 1 2000 3 2 0 0 0 0 0 0 0 0 0 0 5 2001 5 0 1 0 0 0 0 0 0 0 0 0 6 2002 3 1 0 0 0 0 0 0 0 0 0 6 10 2003 2 2 2 0 0 0 0 0 0 0 0 2 8 MEAN 20 17 14 2 0 0 0 0 0 0 5 14 72 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 19 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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 1967 *** *** *** *** 0 0 0 0 0 0 0 0 *** 1968 0 0 0 0 0 0 0 0 0 0 0 0 0 1969 0 0 0 0 0 0 0 0 0 0 0 0 0 1970 0 0 0 0 0 0 0 0 0 0 0 0 0 1971 0 0 0 0 0 0 0 0 0 0 0 0 0 1972 0 0 0 0 0 0 0 0 0 0 0 0 0 1973 0 0 0 0 0 0 0 0 0 0 0 0 0 1974 0 0 0 0 0 0 0 0 0 0 0 0 0 1975 0 0 0 0 0 0 0 0 0 0 0 0 0 1976 0 0 0 0 0 0 0 0 0 0 0 0 0 1977 0 0 0 0 0 0 0 0 0 0 0 0 0 1978 0 0 0 0 0 0 0 0 0 0 0 0 0 1979 0 0 0 0 0 0 0 0 0 0 0 0 0 1980 0 0 0 0 0 0 0 0 0 0 0 0 0 1981 0 0 0 0 0 0 0 0 0 0 0 0 0 1982 0 0 0 0 0 0 0 0 0 0 0 0 0 1983 0 0 0 0 0 0 0 0 0 0 0 0 0 1984 0 0 0 0 0 0 0 0 0 0 0 0 0 1985 0 0 0 0 0 0 0 0 0 0 0 0 0 1986 0 0 0 0 0 0 0 0 0 0 0 0 0 1987 0 0 0 0 0 0 0 0 0 0 0 0 0 1988 0 0 0 0 0 0 0 0 0 0 0 *** *** 1989 0 0 0 0 0 0 0 0 0 0 0 0 0 1990 0 0 0 0 0 0 0 0 0 0 0 0 0 1991 0 0 0 0 0 0 0 0 0 0 0 0 0 1992 0 0 0 0 0 0 0 0 0 0 0 0 0 1993 0 0 0 0 0 0 0 0 0 0 0 0 0 1994 0 0 0 *** 0 0 0 0 0 0 0 0 *** 1995 0 0 0 0 0 0 0 0 0 0 0 0 0 1996 0 0 0 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 1 0 0 0 0 1 2001 0 0 0 0 0 0 0 1 0 0 0 0 1 2002 0 0 0 0 0 0 2 1 0 0 0 0 3 2003 0 0 0 2 0 0 1 0 0 1 0 0 4 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 20 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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 1967 *** *** 0 0 0 0 0 0 0 0 0 0 *** 1968 0 2 0 1 0 0 0 0 0 0 0 0 3 1969 5 3 1 0 0 0 0 0 0 0 0 0 9 1970 1 0 0 0 *** 0 0 0 0 0 0 0 *** 1971 0 0 0 0 0 0 0 0 0 0 0 0 0 1972 7 9 0 0 0 0 0 0 0 0 0 1 17 1973 0 0 0 0 0 0 0 0 0 0 0 0 0 1974 0 0 0 0 0 0 0 0 0 0 0 0 0 1975 0 0 0 0 0 0 0 0 0 0 0 0 0 1976 0 0 0 0 0 0 0 0 0 0 0 0 0 1977 11 0 0 0 0 0 0 0 0 0 0 0 11 1978 2 0 0 0 0 0 0 0 0 0 0 0 2 1979 0 0 0 0 0 0 0 0 0 0 0 0 0 1980 0 0 0 0 0 0 0 0 0 0 0 0 0 1981 0 0 0 0 0 0 0 0 0 0 0 0 0 1982 0 0 0 0 0 0 0 0 0 0 0 0 0 1983 1 0 0 0 0 0 0 0 0 0 0 0 1 1984 0 0 0 0 0 0 0 0 0 0 0 0 0 1985 0 0 0 0 0 0 0 0 0 0 0 0 0 1986 0 0 0 0 0 0 0 0 0 0 0 0 0 1987 0 0 0 0 0 0 0 0 0 0 0 0 0 1988 0 0 0 0 0 0 0 0 0 0 0 *** *** 1989 0 0 0 0 0 0 0 0 0 0 0 0 0 1990 0 0 0 0 0 0 0 0 0 0 0 0 0 1991 0 0 0 0 0 0 0 0 0 0 0 0 0 1992 0 0 0 0 0 0 0 0 0 0 0 0 0 1993 0 0 0 0 0 0 0 0 0 0 0 0 0 1994 0 0 0 *** 0 0 0 0 0 0 0 0 *** 1995 0 0 0 0 0 0 0 0 0 0 0 0 0 1996 0 0 0 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 2 0 0 0 0 0 0 0 0 0 0 0 2 2002 0 0 0 0 0 0 0 0 0 0 0 1 1 2003 0 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 1 0 0 0 0 0 0 0 0 0 0 0 1 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 21 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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 1967 *** *** 0 0 0 4 0 0 0 0 0 0 *** 1968 0 0 0 0 0 0 6 3 6 0 0 0 15 1969 0 0 0 0 0 7 1 2 2 2 0 0 14 1970 0 0 0 0 *** 1 4 2 3 3 0 0 *** 1971 0 0 0 0 0 3 6 4 2 0 0 0 15 1972 0 0 0 0 1 1 5 6 4 5 0 0 22 1973 0 0 0 0 0 0 2 16 10 0 0 0 28 1974 0 0 0 0 1 6 4 10 2 0 0 0 23 1975 0 0 0 0 3 14 22 23 11 1 0 0 74 1976 0 0 0 0 1 5 8 18 5 0 0 0 37 1977 0 0 0 0 2 7 5 15 3 1 0 0 33 1978 0 0 0 0 1 3 18 14 18 3 0 0 57 1979 0 0 0 0 0 8 17 20 16 6 1 0 68 1980 0 0 0 0 8 11 24 13 7 4 0 0 67 1981 0 0 0 0 3 8 18 16 4 0 0 0 49 1982 0 0 0 0 2 7 15 6 1 0 0 0 31 1983 0 0 0 0 1 1 6 8 0 0 0 0 16 1984 0 0 0 0 1 6 14 9 0 0 0 0 30 1985 0 0 0 0 4 14 4 20 12 1 0 0 55 1986 0 0 0 0 0 0 17 17 11 3 0 0 48 1987 0 0 0 0 5 14 23 17 3 0 0 0 62 1988 0 0 0 0 2 14 15 4 6 0 0 *** *** 1989 0 0 0 0 0 1 21 19 15 3 0 0 59 1990 0 0 0 0 0 11 10 1 15 0 0 0 37 1991 0 0 0 0 0 9 15 12 5 0 0 0 41 1992 0 0 0 0 0 2 11 9 1 5 0 0 28 1993 0 0 0 0 0 11 21 21 4 1 0 0 58 1994 0 0 0 *** 8 8 10 10 5 2 1 0 *** 1995 0 0 0 0 0 9 13 18 9 0 0 0 49 1996 0 0 0 0 0 2 20 7 9 3 0 0 41 1997 0 0 0 4 7 12 18 24 9 1 0 0 75 1998 0 0 0 5 3 13 15 18 6 1 0 0 61 1999 0 0 0 0 2 2 6 19 3 3 0 0 35 2000 0 0 0 2 1 8 18 20 4 0 0 0 53 2001 0 0 0 2 6 7 9 11 6 1 0 0 42 2002 0 0 0 1 3 4 15 11 5 6 0 0 45 2003 0 0 0 4 2 0 2 9 6 4 0 0 27 MEAN 0 0 0 1 2 6 12 12 6 2 0 0 41 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 22 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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 1967 *** *** 0 0 0 0 0 0 0 0 0 0 *** 1968 0 0 0 0 0 0 0 0 0 0 0 0 0 1969 0 0 0 0 0 0 0 0 0 0 0 0 0 1970 0 0 0 0 *** 0 0 0 0 0 0 0 *** 1971 0 0 0 0 0 0 0 0 0 0 0 0 0 1972 0 0 0 0 0 0 0 0 0 0 0 0 0 1973 0 0 0 0 0 0 0 0 0 0 0 0 0 1974 0 0 0 0 0 0 0 0 0 0 0 0 0 1975 0 0 0 0 0 0 5 0 0 0 0 0 5 1976 0 0 0 0 0 0 0 0 0 0 0 0 0 1977 0 0 0 0 0 0 0 0 0 0 0 0 0 1978 0 0 0 0 0 0 0 0 0 0 0 0 0 1979 0 0 0 0 0 0 0 0 0 0 0 0 0 1980 0 0 0 0 0 0 0 0 0 0 0 0 0 1981 0 0 0 0 0 0 0 0 0 0 0 0 0 1982 0 0 0 0 0 0 0 0 0 0 0 0 0 1983 0 0 0 0 0 0 0 0 0 0 0 0 0 1984 0 0 0 0 0 0 0 0 0 0 0 0 0 1985 0 0 0 0 0 0 0 0 0 0 0 0 0 1986 0 0 0 0 0 0 1 0 0 0 0 0 1 1987 0 0 0 0 0 0 0 0 0 0 0 0 0 1988 0 0 0 0 0 0 0 0 0 0 0 *** *** 1989 0 0 0 0 0 0 0 0 0 0 0 0 0 1990 0 0 0 0 0 0 0 0 0 0 0 0 0 1991 0 0 0 0 0 0 0 0 0 0 0 0 0 1992 0 0 0 0 0 0 0 0 0 0 0 0 0 1993 0 0 0 0 0 0 0 0 0 0 0 0 0 1994 0 0 0 *** 0 0 0 0 0 0 0 0 *** 1995 0 0 0 0 0 0 0 0 0 0 0 0 0 1996 0 0 0 0 0 0 0 0 0 0 0 0 0 1997 0 0 0 0 0 1 0 0 0 0 0 0 1 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 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 23 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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 1967 *** *** 0 0 0 0 0 0 0 0 0 0 *** 1968 0 0 0 0 0 0 0 0 0 0 0 0 0 1969 0 0 0 0 0 0 0 0 0 0 0 0 0 1970 0 0 0 0 *** 0 0 0 0 0 0 0 *** 1971 0 0 0 0 0 0 0 0 0 0 0 0 0 1972 0 0 0 0 0 0 0 0 0 0 0 0 0 1973 0 0 0 0 0 0 0 0 0 0 0 0 0 1974 0 0 0 0 0 0 0 0 0 0 0 0 0 1975 0 0 0 0 0 0 2 0 0 0 0 0 2 1976 0 0 0 0 0 0 0 0 0 0 0 0 0 1977 0 0 0 0 0 0 0 0 0 0 0 0 0 1978 0 0 0 0 0 0 0 0 0 0 0 0 0 1979 0 0 0 0 0 0 0 0 0 0 0 0 0 1980 0 0 0 0 0 0 0 0 0 0 0 0 0 1981 0 0 0 0 0 0 0 0 0 0 0 0 0 1982 0 0 0 0 0 0 0 0 0 0 0 0 0 1983 0 0 0 0 0 0 0 0 0 0 0 0 0 1984 0 0 0 0 0 0 0 0 0 0 0 0 0 1985 0 0 0 0 0 0 0 0 0 0 0 0 0 1986 0 0 0 0 0 0 0 0 0 0 0 0 0 1987 0 0 0 0 0 0 0 0 0 0 0 0 0 1988 0 0 0 0 0 0 0 0 0 0 0 *** *** 1989 0 0 0 0 0 0 0 0 0 0 0 0 0 1990 0 0 0 0 0 0 0 0 0 0 0 0 0 1991 0 0 0 0 0 0 0 0 0 0 0 0 0 1992 0 0 0 0 0 0 0 0 0 0 0 0 0 1993 0 0 0 0 0 0 0 0 0 0 0 0 0 1994 0 0 0 *** 0 0 0 0 0 0 0 0 *** 1995 0 0 0 0 0 0 0 0 0 0 0 0 0 1996 0 0 0 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 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 24 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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 -------------- 1967 *** *** *** *** 0 0 0 0 0 0 1 5 *** 11 29 12 30 1968 10 24 11 8 0 0 0 0 0 0 0 7 60 12 10 4 11 1969 26 27 10 2 0 0 0 0 0 0 9 10 84 11 16 4 15 1970 29 16 11 0 0 0 0 0 0 0 0 25 81 12 3 3 24 1971 26 27 21 11 0 0 0 0 0 0 3 30 118 11 21 4 25 1972 31 29 29 6 0 0 0 0 0 0 0 28 123 12 2 4 26 1973 30 14 13 3 0 0 0 0 0 0 12 22 94 11 6 4 13 1974 31 28 22 7 0 0 0 0 0 0 4 27 119 11 26 4 8 1975 31 25 19 0 0 0 0 0 0 0 14 27 116 11 4 3 22 1976 31 27 29 2 0 0 0 0 0 9 25 31 154 10 18 4 3 1977 31 27 18 4 0 0 0 0 0 6 18 30 134 10 24 4 8 1978 31 23 17 3 4 0 0 0 0 0 27 19 124 11 2 5 7 1979 24 21 25 0 0 0 0 0 0 0 13 26 109 11 12 3 29 1980 31 29 24 0 0 0 0 0 0 0 2 25 111 11 24 3 28 1981 28 27 27 11 0 0 0 0 0 0 12 28 133 11 6 4 23 1982 31 28 31 10 3 0 0 0 0 0 27 30 160 11 2 5 9 1983 29 28 29 5 0 0 0 0 0 0 0 21 112 12 6 4 14 1984 31 29 30 6 0 0 0 0 0 5 12 31 144 10 21 4 12 1985 26 21 23 7 0 0 0 0 0 0 9 30 116 11 2 4 17 1986 28 24 31 12 0 0 0 0 0 0 20 30 145 11 11 4 21 1987 30 28 31 12 0 0 0 0 0 13 24 29 167 10 11 4 27 1988 31 28 25 19 3 0 0 0 0 3 22 *** *** 10 16 5 4 1989 31 28 31 22 3 0 0 0 0 0 22 31 168 11 6 5 30 1990 31 28 31 25 3 0 0 0 0 0 16 26 160 11 4 5 8 1991 31 28 31 18 6 0 0 0 0 21 30 30 195 10 7 5 26 1992 31 29 31 17 5 0 0 0 0 0 4 28 145 11 27 5 12 1993 28 28 31 22 4 0 0 0 0 0 15 15 143 11 12 5 8 1994 23 26 17 *** 0 0 0 0 0 0 0 21 *** 12 5 3 27 1995 26 23 19 7 0 0 0 0 0 0 1 13 89 11 27 4 26 1996 23 26 21 6 0 0 0 0 0 0 2 0 78 11 13 4 15 1997 6 17 16 2 0 0 0 0 0 0 0 6 47 12 18 4 12 1998 18 15 5 1 0 0 0 0 0 0 0 0 39 1 3 4 6 1999 8 2 2 0 0 0 0 0 0 0 0 1 13 12 18 3 18 2000 9 9 3 0 0 0 0 0 0 0 0 0 21 1 8 3 9 2001 18 3 3 0 0 0 0 0 0 0 1 2 27 11 19 3 12 2002 14 9 2 0 0 0 0 0 0 0 0 20 45 12 3 3 10 2003 11 12 7 1 0 0 0 0 0 0 1 4 36 11 16 4 18 MEAN 25 23 20 7 1 0 0 0 0 2 9 20 107 10 7 5 30 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 25 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. AVERAGE OF DRY BULB TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1967 ****** ****** 8.6 11.0 17.0 18.8 19.6 21.6 17.7 14.8 11.8 8.3 ****** 1968 7.6 3.0 10.0 7.6 14.7 17.5 21.1 21.2 20.0 15.9 11.5 7.2 13.1 1969 0.8 1.0 7.3 10.0 15.1 20.9 18.4 20.2 17.7 14.3 8.7 8.9 11.9 1970 3.7 7.5 8.0 12.5 17.4 17.1 20.7 20.3 17.0 14.3 12.8 4.6 13.0 1971 2.8 4.2 8.1 10.0 16.4 17.9 22.0 21.0 19.5 15.2 11.2 6.0 12.9 1972 -2.6 -2.5 3.3 13.9 12.6 19.1 21.4 21.1 19.8 18.7 13.7 2.6 11.8 1973 0.7 6.8 6.4 8.9 11.7 13.7 16.1 22.0 19.9 15.1 8.4 4.7 11.2 1974 -0.3 -3.6 2.9 8.9 16.2 19.7 18.6 20.3 16.9 13.5 9.9 3.0 10.5 1975 1.1 4.5 7.8 13.1 16.6 20.4 24.2 22.3 19.9 13.2 7.6 4.0 12.9 1976 3.6 1.2 3.1 11.5 14.8 18.4 20.1 22.1 18.3 11.1 6.8 3.4 11.2 1977 -4.9 4.6 7.9 11.8 14.9 19.9 18.6 21.9 19.2 12.1 8.0 3.2 11.4 1978 0.2 4.3 8.6 13.5 13.2 16.0 20.7 20.7 21.0 16.0 5.8 7.7 12.3 1979 4.4 5.7 6.6 13.9 15.1 18.3 21.6 22.8 20.8 16.5 11.5 5.0 13.5 1980 2.4 1.2 6.4 14.6 16.7 20.1 23.3 20.8 18.5 14.2 12.5 6.9 13.1 1981 6.1 4.3 7.3 9.8 14.9 19.6 21.8 22.5 18.8 13.3 10.8 4.7 12.8 1982 -0.5 -0.3 0.9 11.0 14.0 17.4 22.0 19.1 17.8 12.9 4.1 1.8 10.0 1983 0.5 4.1 2.5 10.5 15.4 16.6 18.3 18.3 16.2 14.2 12.1 4.0 11.1 1984 1.7 -0.2 4.9 11.9 11.5 16.6 20.0 19.7 18.0 13.3 10.0 1.0 10.7 1985 4.0 3.7 4.1 11.1 16.0 20.9 18.7 20.3 19.5 13.5 8.9 4.8 12.1 1986 3.5 4.3 1.5 9.0 14.2 16.0 21.0 21.6 18.9 14.5 7.1 4.0 11.3 1987 5.8 2.5 4.3 10.3 15.7 20.7 22.9 21.4 17.3 10.0 7.3 5.1 11.9 1988 3.3 3.6 6.1 9.8 13.9 20.9 20.8 16.0 17.1 12.3 8.7 ****** ****** 1989 0.9 2.5 5.8 8.7 12.8 15.2 19.1 18.1 18.4 15.4 10.4 6.4 11.1 1990 3.0 3.4 6.3 8.1 11.4 17.2 17.2 14.5 17.0 13.5 10.9 7.5 10.8 1991 3.8 2.9 6.6 11.0 13.5 17.0 18.8 17.2 15.3 11.0 7.4 4.3 10.7 1992 2.4 2.5 3.7 7.9 10.6 15.6 17.8 16.7 14.2 13.3 10.6 6.5 10.1 1993 4.1 3.5 4.2 7.5 11.4 18.7 19.3 21.5 18.5 13.4 6.8 6.1 11.2 1994 5.2 3.0 7.0 ****** 16.4 17.6 19.1 19.6 17.8 15.8 12.8 5.9 ****** 1995 5.4 5.0 7.1 9.2 15.3 17.4 18.4 20.3 17.9 12.0 12.0 6.7 12.2 1996 4.0 3.6 4.9 10.0 12.9 14.5 18.4 17.3 18.0 14.6 9.0 9.0 11.3 1997 6.5 4.9 5.1 12.1 15.5 18.0 19.6 21.1 19.2 15.2 10.8 6.9 12.9 1998 3.6 4.4 8.1 12.8 15.4 19.1 20.3 21.4 18.6 15.2 13.5 9.2 13.5 1999 5.4 7.7 7.4 9.2 13.6 17.6 17.8 20.9 18.0 14.4 8.4 7.2 12.3 2000 4.4 5.5 7.2 15.8 16.5 19.4 22.9 24.0 20.9 13.5 8.2 7.4 13.8 2001 3.2 7.7 11.4 14.6 18.3 20.4 21.6 23.0 20.2 15.0 11.7 10.0 14.8 2002 5.9 7.0 11.8 12.1 15.1 20.8 23.7 22.3 21.3 18.6 11.2 2.8 14.4 2003 6.5 5.7 7.0 11.8 16.3 18.2 20.5 23.1 19.3 18.4 9.8 7.6 13.7 MEAN 3.0 3.6 6.2 11.0 14.7 18.2 20.2 20.5 18.5 14.3 9.8 5.7 12.1 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 26 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. AVERAGE OF DEW POINT TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1967 ****** ****** 3.6 3.1 10.9 11.9 15.6 16.7 13.7 8.4 5.1 -1.9 ****** 1968 -3.9 -4.0 0.3 2.7 8.1 13.6 15.7 16.8 14.1 10.2 5.5 0.6 6.6 1969 -6.1 -5.8 2.2 4.6 9.8 13.6 14.7 15.7 13.0 9.5 2.3 0.7 6.2 1970 -3.2 -0.5 0.7 6.8 9.8 10.1 14.0 15.0 12.1 9.0 6.5 -5.4 6.2 1971 -12.3 -7.5 -2.9 3.3 10.6 11.9 15.7 15.8 12.8 9.8 5.1 -4.6 4.8 1972 -14.6 -14.1 -4.3 6.3 7.1 13.5 16.3 15.5 15.2 12.5 7.8 -7.8 4.4 1973 -13.9 -1.4 -0.9 2.7 5.0 7.9 10.1 15.5 14.0 9.3 0.9 -3.4 3.8 1974 -12.0 -20.6 -5.6 3.1 10.4 14.2 13.8 15.2 12.5 8.5 4.9 -7.0 3.1 1975 -11.6 -4.8 0.3 7.1 10.6 14.6 17.8 16.0 14.3 7.1 -0.2 -3.2 5.7 1976 -4.8 -9.0 -6.6 5.0 8.7 12.8 15.5 16.1 12.9 3.4 -2.1 -5.4 3.9 1977 -22.6 -4.0 -0.2 4.9 9.9 14.2 13.2 15.6 13.5 5.5 0.4 -5.9 3.7 1978 -10.2 -4.8 0.7 6.1 6.4 9.3 13.9 14.1 14.1 9.4 -3.5 -0.8 4.6 1979 ****** -0.0 0.6 6.7 8.0 12.4 15.7 15.8 14.5 10.5 4.5 -3.6 ****** 1980 -7.5 -6.7 -1.7 7.1 10.1 12.7 16.3 14.3 12.8 8.0 5.4 -2.9 5.7 1981 -3.3 -6.9 -4.4 1.5 8.3 13.6 16.1 16.7 12.5 7.0 3.7 -6.3 4.9 1982 -14.7 -10.1 -12.1 3.1 6.7 11.1 15.3 14.1 12.7 7.2 -6.3 -11.6 1.3 1983 -11.2 -8.3 -7.8 2.3 9.1 10.3 11.6 12.7 10.9 8.6 6.3 -3.7 3.4 1984 -6.8 -8.5 -2.0 5.5 5.9 11.1 14.0 14.7 13.0 7.2 3.4 -7.5 4.2 1985 -3.5 -3.3 -4.3 5.3 10.6 14.8 13.0 14.4 13.9 8.2 2.6 -3.0 5.7 1986 -4.8 -3.7 -5.9 2.1 8.4 11.0 15.0 15.3 12.7 9.1 -0.8 -4.9 4.5 1987 -3.1 -5.8 -5.7 2.1 9.4 15.0 16.6 14.6 11.3 2.8 -1.1 -3.7 4.4 1988 -5.3 -4.2 -1.8 2.1 7.3 14.0 14.9 10.7 11.4 7.1 1.2 ****** ****** 1989 -8.6 -5.4 -2.8 1.8 6.7 8.7 12.6 11.5 12.6 9.3 3.8 -3.5 3.9 1990 -8.0 -6.4 -1.5 0.7 4.7 11.0 11.0 8.5 9.6 6.8 3.7 -1.9 3.2 1991 -4.8 -5.0 -0.6 4.1 6.6 10.2 13.0 11.1 8.5 2.8 -2.2 -4.7 3.2 1992 -6.2 -6.0 -4.9 1.4 3.4 10.4 12.4 10.6 8.0 6.2 3.5 -0.8 3.2 1993 -3.2 -5.0 -3.5 0.0 7.2 13.7 14.5 16.7 13.8 7.3 1.9 -0.1 5.3 1994 -1.8 -3.6 -1.3 ****** 9.7 12.3 13.9 14.7 12.3 10.6 6.9 -0.5 ****** 1995 -1.8 -0.7 0.2 1.7 7.8 10.7 11.6 13.7 12.1 6.2 5.2 1.1 5.6 1996 -2.0 -2.5 -1.6 2.6 5.5 7.5 10.0 10.3 11.5 8.9 3.3 2.5 4.7 1997 0.9 -1.0 -0.3 4.1 7.9 11.2 13.4 15.3 13.5 9.6 5.0 1.3 6.7 1998 -1.2 -1.1 1.8 5.9 9.5 12.9 14.9 16.1 13.7 10.1 7.1 3.2 7.7 1999 0.2 0.8 0.9 1.9 5.7 10.3 10.1 11.8 11.8 8.0 2.1 0.5 5.3 2000 -0.7 -1.0 0.0 4.9 9.2 12.2 15.4 17.1 15.4 9.3 3.4 1.1 7.2 2001 -2.0 -1.8 1.7 7.6 10.0 13.8 15.6 16.3 14.0 9.6 3.3 1.1 7.4 2002 -2.6 -1.2 1.0 6.7 9.7 13.5 17.1 18.0 14.9 10.7 3.8 -3.2 7.4 2003 -2.0 -1.7 0.9 4.9 10.7 13.5 16.6 16.5 13.8 9.7 3.4 1.9 7.3 MEAN -6.3 -4.9 -1.8 3.9 8.3 12.0 14.2 14.6 12.8 8.2 2.9 -2.6 5.1 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 27 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. AVERAGE OF MIXING RATIO IN G/KG YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1967 ****** ****** 6.18 5.81 9.82 10.63 13.29 14.26 11.84 8.37 6.78 4.13 ****** 1968 3.72 3.56 4.83 5.71 8.27 11.80 13.48 14.43 12.27 9.58 6.81 4.86 8.28 1969 3.30 3.20 5.54 6.46 9.14 11.82 12.61 13.46 11.49 9.06 5.67 4.86 8.05 1970 3.84 4.49 4.96 7.52 9.20 9.57 12.21 13.04 10.83 8.74 7.42 3.66 7.96 1971 2.58 3.11 4.04 5.97 9.74 10.52 13.51 13.57 11.31 9.14 6.66 3.94 7.84 1972 1.94 1.98 3.56 7.37 7.72 11.81 14.13 13.34 13.10 11.02 8.15 3.04 8.10 1973 2.16 4.49 4.61 5.64 6.65 8.34 9.52 13.57 12.19 8.96 5.25 4.02 7.12 1974 2.27 1.32 3.76 5.97 9.64 12.28 11.92 13.06 11.02 8.47 6.74 3.63 7.51 1975 2.64 3.57 5.10 7.74 9.79 12.91 15.88 13.95 12.56 7.83 4.85 3.75 8.38 1976 3.46 2.70 3.17 6.74 8.67 11.25 13.40 14.03 11.40 6.19 4.29 3.33 7.38 1977 1.05 3.76 4.85 6.76 9.32 12.35 11.59 13.56 11.69 7.24 4.91 3.21 7.52 1978 2.40 3.58 5.19 7.44 7.46 9.12 12.16 12.31 12.34 9.01 3.86 4.61 7.46 1979 ****** 4.88 5.17 7.59 8.34 10.94 13.62 13.75 12.85 9.82 6.73 4.05 ****** 1980 3.07 3.04 4.61 7.84 9.61 11.25 14.37 12.66 11.32 8.48 6.89 4.12 8.11 1981 3.96 3.27 4.14 5.59 8.45 12.06 14.05 14.57 11.13 7.77 6.40 3.37 7.90 1982 1.75 2.37 2.21 6.41 7.73 10.32 13.52 12.27 11.21 7.84 3.38 2.26 6.77 1983 2.33 2.93 2.88 5.61 8.79 9.51 10.40 11.16 9.92 8.50 7.28 4.10 6.95 1984 2.92 2.56 4.10 6.96 7.19 10.09 12.23 12.68 11.32 7.92 6.19 2.74 7.24 1985 3.80 3.86 3.76 6.92 9.87 12.85 11.34 12.48 12.05 8.26 5.65 3.85 7.89 1986 3.42 3.77 3.06 5.48 8.50 10.01 13.28 13.39 11.25 8.82 4.83 3.45 7.44 1987 3.88 3.18 3.34 5.95 9.16 13.24 14.79 12.87 10.22 5.98 4.72 3.81 7.59 1988 3.36 3.57 4.19 5.80 8.24 12.41 13.04 9.88 10.34 7.78 5.45 ****** ****** 1989 2.58 3.20 3.99 5.42 7.62 8.74 11.27 10.48 11.12 9.15 6.32 4.04 7.00 1990 2.94 3.21 4.41 5.09 6.62 10.52 10.49 8.52 9.13 7.48 6.28 4.67 6.61 1991 3.56 3.40 4.76 6.51 7.70 9.75 11.81 10.48 8.69 6.17 4.43 3.56 6.73 1992 3.19 3.22 3.51 5.23 6.13 9.90 11.29 9.97 8.10 7.17 5.97 4.58 6.52 1993 3.85 3.46 3.70 4.61 7.79 11.97 12.74 14.32 11.95 7.75 5.39 4.69 7.69 1994 4.08 3.60 4.23 ****** 9.13 10.76 11.90 12.66 10.77 9.69 7.60 4.49 ****** 1995 4.07 4.38 4.64 5.20 8.01 9.70 10.31 11.77 10.71 7.22 6.75 4.93 7.31 1996 4.03 3.90 4.16 5.60 6.78 7.80 9.23 9.37 10.27 8.56 5.87 5.48 6.75 1997 4.92 4.29 4.50 6.18 8.03 10.02 11.54 13.11 11.68 9.05 6.60 5.07 7.92 1998 4.24 4.28 5.28 7.15 9.01 11.15 12.76 13.94 11.88 9.42 7.55 5.80 8.54 1999 4.65 4.84 4.88 5.28 6.99 9.43 9.34 10.44 10.46 8.15 5.31 4.72 7.04 2000 4.34 4.26 4.58 6.59 8.80 10.73 13.19 14.79 13.18 8.78 5.95 5.03 8.35 2001 4.01 4.05 5.23 7.82 9.31 11.94 13.28 14.10 12.16 9.08 5.97 5.10 8.50 2002 3.87 4.26 5.02 7.35 9.06 11.69 14.70 15.53 12.96 9.83 6.20 3.76 8.69 2003 4.00 4.10 4.91 6.50 9.83 11.64 14.15 14.29 11.96 9.17 6.07 5.45 8.51 MEAN 3.32 3.55 4.35 6.33 8.44 10.83 12.50 12.76 11.32 8.42 5.98 4.17 7.66 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 28 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. AVERAGE OF VAPOUR PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1967 ****** ****** 8.33 7.85 13.22 14.31 17.83 19.13 15.90 11.29 9.15 5.59 ****** 1968 5.03 4.80 6.53 7.70 11.15 15.85 18.10 19.34 16.48 12.90 9.18 6.56 11.13 1969 4.45 4.32 7.46 8.71 12.31 15.90 16.92 18.06 15.44 12.20 7.65 6.56 10.83 1970 5.19 6.07 6.69 10.14 12.41 12.89 16.42 17.50 14.56 11.78 10.00 4.94 10.72 1971 3.49 4.20 5.46 8.05 13.12 14.17 18.14 18.21 15.22 12.32 8.98 5.33 10.56 1972 2.62 2.67 4.81 9.95 10.41 15.88 18.95 17.91 17.58 14.82 10.99 4.11 10.89 1973 2.91 6.06 6.22 7.62 8.98 11.23 12.82 18.22 16.38 12.07 7.09 5.43 9.59 1974 3.07 1.78 5.07 8.06 12.98 16.50 16.02 17.53 14.82 11.41 9.08 4.90 10.10 1975 3.56 4.82 6.88 10.44 13.18 17.33 21.24 18.71 16.87 10.56 6.55 5.06 11.27 1976 4.67 3.64 4.28 9.09 11.68 15.13 17.98 18.81 15.32 8.35 5.79 4.50 9.94 1977 1.42 5.07 6.55 9.12 12.54 16.59 15.57 18.21 15.72 9.76 6.62 4.33 10.13 1978 3.23 4.84 7.00 10.04 10.07 12.29 16.34 16.54 16.59 12.14 5.21 6.23 10.04 1979 ****** 6.58 6.99 10.24 11.25 14.72 18.27 18.46 17.25 13.23 9.08 5.47 ****** 1980 4.15 4.11 6.22 10.58 12.95 15.14 19.27 17.00 15.22 11.42 9.30 5.57 10.91 1981 5.34 4.42 5.59 7.55 11.39 16.19 18.84 19.53 14.97 10.48 8.63 4.55 10.62 1982 2.37 3.20 2.98 8.65 10.43 13.88 18.14 16.48 15.07 10.57 4.57 3.05 9.11 1983 3.15 3.96 3.89 7.57 11.84 12.82 14.00 15.00 13.36 11.45 9.82 5.53 9.37 1984 3.94 3.45 5.53 9.39 9.70 13.57 16.43 17.03 15.21 10.68 8.35 3.70 9.75 1985 5.13 5.21 5.07 9.33 13.28 17.25 15.26 16.77 16.20 11.13 7.62 5.19 10.62 1986 4.62 5.09 4.12 7.40 11.45 13.47 17.82 17.97 15.13 11.89 6.52 4.66 10.01 1987 5.24 4.28 4.51 8.03 12.34 17.75 19.80 17.28 13.76 8.07 6.37 5.15 10.22 1988 4.53 4.83 5.66 7.83 11.10 16.67 17.50 13.30 13.91 10.48 7.35 ****** ****** 1989 3.48 4.32 5.39 7.32 10.27 11.78 15.16 14.11 14.96 12.32 8.53 5.45 9.42 1990 3.97 4.34 5.96 6.88 8.93 14.14 14.10 11.48 12.31 10.10 8.47 6.30 8.91 1991 4.80 4.58 6.42 8.78 10.38 13.13 15.85 14.09 11.71 8.33 5.98 4.81 9.07 1992 4.30 4.34 4.74 7.06 8.27 13.31 15.16 13.42 10.92 9.68 8.06 6.19 8.79 1993 5.19 4.68 4.99 6.23 10.49 16.08 17.09 19.20 16.06 10.46 7.27 6.32 10.34 1994 5.51 4.86 5.72 ****** 12.31 14.49 16.00 17.01 14.49 13.04 10.25 6.06 ****** 1995 5.49 5.91 6.27 7.03 10.81 13.08 13.89 15.83 14.42 9.74 9.11 6.66 9.85 1996 5.44 5.25 5.61 7.56 9.16 10.53 12.46 12.63 13.83 11.54 7.92 7.40 9.11 1997 6.63 5.79 6.07 8.35 10.84 13.51 15.53 17.61 15.71 12.20 8.90 6.84 10.67 1998 5.72 5.77 7.13 9.65 12.14 15.01 17.14 18.70 15.96 12.69 10.19 7.82 11.49 1999 6.27 6.53 6.58 7.14 9.44 12.71 12.60 14.08 14.09 10.99 7.17 6.37 9.50 2000 5.85 5.75 6.19 8.91 11.87 14.45 17.74 19.84 17.70 11.82 8.03 6.78 11.24 2001 5.40 5.48 7.08 10.55 12.55 16.06 17.84 18.93 16.34 12.23 8.06 6.89 11.45 2002 5.23 5.75 6.79 9.91 12.21 15.73 19.72 20.79 17.41 13.25 8.36 5.07 11.69 2003 5.40 5.53 6.63 8.78 13.24 15.65 18.97 19.17 16.07 12.36 8.18 7.35 11.44 MEAN 4.48 4.79 5.88 8.54 11.37 14.57 16.78 17.13 15.21 11.34 8.07 5.63 10.32 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 29 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. AVERAGE OF SATURATION DEFICIT PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1967 ****** ****** 3.42 6.57 6.69 8.18 5.19 7.11 4.85 6.16 5.29 5.95 ****** 1968 6.08 3.18 6.74 3.42 6.55 4.71 7.77 6.40 7.83 5.99 4.90 3.94 5.63 1969 2.53 2.87 3.61 4.49 5.83 9.84 4.82 6.17 5.92 4.96 4.44 5.45 5.08 1970 3.24 4.93 5.25 5.17 8.77 7.44 8.62 7.04 5.72 5.44 5.69 4.45 5.98 1971 4.79 4.85 6.30 4.79 6.18 7.07 9.08 7.26 8.41 5.51 4.81 4.70 6.15 1972 2.80 2.92 3.49 6.81 4.65 6.77 7.14 7.98 6.28 7.67 5.32 3.67 5.46 1973 4.06 4.33 3.95 4.02 5.22 4.98 6.05 9.30 7.63 5.67 4.35 3.71 5.27 1974 3.28 3.28 3.20 4.03 6.19 7.31 5.83 6.93 4.91 4.65 3.60 3.45 4.72 1975 3.71 3.96 4.44 5.25 6.51 7.70 10.71 9.30 7.44 5.23 4.42 3.41 6.01 1976 3.50 3.29 3.82 5.14 5.68 6.64 6.21 8.81 6.49 5.54 4.55 3.68 5.28 1977 3.05 3.82 4.63 5.43 4.95 7.34 6.43 9.29 7.02 5.20 4.65 3.72 5.46 1978 3.30 3.99 5.05 6.54 5.82 6.77 9.16 8.69 9.40 6.70 4.34 4.77 6.21 1979 ****** 4.66 5.46 6.38 6.57 6.92 8.17 10.08 8.55 6.39 5.52 4.96 ****** 1980 3.79 3.08 4.43 7.05 7.07 9.27 10.49 8.42 6.92 6.01 5.74 4.98 6.44 1981 4.47 4.51 5.45 5.42 6.30 7.33 8.23 8.27 8.16 5.54 5.15 4.47 6.11 1982 3.77 2.95 3.87 5.49 6.46 6.99 9.41 6.33 5.97 5.38 4.17 4.25 5.42 1983 3.52 4.60 3.72 5.52 6.14 6.54 7.79 6.77 5.49 5.14 4.64 3.24 5.26 1984 3.12 2.70 3.29 5.27 4.43 6.03 7.85 6.56 5.91 5.36 4.37 3.07 4.83 1985 3.41 3.10 3.83 4.39 5.74 8.23 6.93 7.95 7.25 4.81 4.08 3.74 5.29 1986 3.56 3.61 2.85 4.37 5.19 5.13 8.45 8.75 7.45 5.18 4.19 3.88 5.22 1987 4.39 3.29 4.14 5.50 6.48 7.76 9.43 9.41 6.58 4.74 4.55 4.04 5.86 1988 3.49 3.41 4.24 5.16 5.78 9.10 7.82 5.38 6.32 4.31 4.55 ****** ****** 1989 3.19 3.20 4.17 4.34 5.10 6.24 8.12 7.82 7.30 6.14 4.60 4.65 5.41 1990 3.98 3.77 4.07 4.31 5.18 7.27 7.24 5.76 8.42 5.99 5.11 4.90 5.50 1991 3.60 3.19 3.88 5.01 5.90 7.30 7.14 6.95 6.69 5.53 5.04 4.04 5.36 1992 3.35 3.42 3.71 4.09 5.17 5.68 6.78 7.34 5.90 6.66 5.45 4.02 5.13 1993 3.48 3.69 3.56 4.50 3.59 6.36 6.53 7.02 5.98 5.40 2.91 3.53 4.71 1994 3.77 3.06 4.86 ****** 7.18 6.43 6.73 6.37 6.33 5.37 5.07 3.50 ****** 1995 3.78 3.05 4.11 5.04 7.13 7.74 8.17 8.83 7.11 4.81 5.57 3.34 5.72 1996 2.92 2.87 3.48 5.29 6.40 6.88 10.25 8.01 7.78 5.82 4.00 4.48 5.68 1997 3.43 3.11 3.06 6.85 7.95 8.27 8.24 8.52 7.59 5.79 4.53 3.55 5.91 1998 2.38 2.88 4.23 6.36 6.30 8.04 7.57 7.89 6.24 5.27 5.91 4.41 5.62 1999 2.91 4.38 4.10 5.01 7.10 8.12 8.78 11.87 7.37 6.20 4.20 4.08 6.18 2000 2.75 3.59 4.37 10.03 7.75 9.04 11.12 10.98 7.61 4.12 3.17 4.00 6.54 2001 2.76 5.69 7.59 7.12 9.57 8.94 8.84 10.04 8.35 5.56 6.54 6.05 7.25 2002 4.93 5.23 8.23 5.08 6.00 9.53 10.32 6.87 8.71 9.40 5.63 2.88 6.90 2003 5.05 4.21 4.22 7.38 6.14 5.74 5.45 10.01 7.31 9.82 4.67 3.82 6.15 MEAN 3.60 3.69 4.40 5.46 6.21 7.29 7.92 8.01 7.01 5.77 4.75 4.13 5.69 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 30 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. AVERAGE OF RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1967 *** *** 73 63 69 68 79 75 79 69 67 52 *** 1968 49 66 58 73 67 79 74 78 72 72 70 66 69 1969 63 63 73 72 73 65 80 77 75 75 67 60 70 1970 63 60 64 69 63 64 67 72 73 73 67 51 66 1971 38 46 49 64 70 70 68 73 66 71 67 51 61 1972 44 45 60 61 70 70 73 71 75 68 68 50 63 1973 37 58 61 65 65 69 68 68 70 69 61 57 62 1974 44 31 57 68 70 71 74 73 76 72 71 52 63 1975 42 53 60 68 68 70 69 68 71 67 60 61 63 1976 56 50 52 65 68 71 75 70 71 60 55 54 62 1977 30 55 58 63 73 70 71 68 70 65 59 53 61 1978 47 53 59 62 64 65 66 66 66 66 53 56 60 1979 *** 60 55 63 63 69 70 65 68 68 62 50 *** 1980 49 56 57 62 66 63 65 67 70 66 62 52 61 1981 54 47 48 57 65 69 71 71 66 66 63 48 60 1982 36 50 41 60 62 67 67 73 73 67 49 40 57 1983 45 43 49 58 66 67 66 70 72 69 68 59 61 1984 55 55 62 66 69 71 69 73 73 67 65 55 65 1985 60 61 56 68 71 69 70 70 71 71 65 58 66 1986 56 58 59 63 69 73 69 68 68 71 59 54 64 1987 54 56 50 58 67 70 68 65 68 62 56 54 61 1988 55 58 58 59 65 65 69 72 70 71 60 *** *** 1989 51 57 56 63 67 66 67 67 70 67 64 51 62 1990 47 51 58 61 64 67 67 68 64 65 62 54 61 1991 56 57 61 63 63 65 69 68 65 59 52 54 61 1992 55 55 55 64 62 71 72 69 67 64 64 61 63 1993 60 54 58 60 77 74 74 75 75 68 72 66 68 1994 62 63 57 *** 66 72 72 75 71 72 68 64 *** 1995 61 67 63 61 62 66 66 67 70 68 64 69 65 1996 66 65 64 62 62 64 60 65 67 70 69 66 65 1997 69 67 70 60 62 66 69 70 70 70 69 69 68 1998 73 69 66 65 69 68 72 73 74 73 67 67 70 1999 71 64 65 62 60 63 62 57 68 67 66 64 64 2000 71 66 63 50 63 65 65 67 73 78 75 69 67 2001 72 58 58 67 62 69 71 69 70 73 62 59 66 2002 60 61 55 73 73 66 69 78 69 64 66 70 67 2003 62 65 71 70 72 75 79 70 74 62 69 71 70 MEAN 55 57 59 64 67 68 70 70 71 68 64 58 64 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 31 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. AVERAGE OF MAXIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1967 *** *** 86 76 79 79 90 87 89 83 78 67 *** 1968 66 81 73 83 77 87 85 88 83 83 79 78 80 1969 73 74 84 83 83 77 87 86 83 86 78 71 80 1970 76 73 74 77 72 72 77 80 79 86 76 66 76 1971 53 60 62 74 77 79 76 83 77 80 77 66 72 1972 58 59 72 71 79 78 79 80 84 77 74 64 73 1973 54 69 71 72 76 77 74 76 78 75 70 68 72 1974 61 49 68 76 77 80 81 81 82 79 77 67 73 1975 64 66 69 75 74 76 75 74 78 73 70 70 72 1976 67 63 64 72 73 77 81 77 78 66 64 66 71 1977 46 67 67 68 79 77 76 76 76 73 69 63 70 1978 60 64 68 69 71 71 72 73 73 73 65 69 69 1979 *** 69 65 70 69 76 75 72 74 76 70 61 *** 1980 62 69 69 69 73 71 71 73 76 72 70 64 70 1981 65 59 63 66 73 77 78 77 75 73 71 59 70 1982 47 64 56 69 70 73 73 80 80 73 61 53 67 1983 57 58 62 67 73 75 74 76 76 76 74 68 70 1984 66 67 72 74 76 78 76 81 79 74 72 65 73 1985 70 71 66 76 78 76 77 78 80 77 71 67 74 1986 65 66 70 68 74 77 74 74 75 78 69 64 71 1987 63 66 61 65 75 75 73 71 74 69 66 64 69 1988 64 68 68 67 72 72 75 77 76 77 68 *** *** 1989 63 67 69 72 74 72 76 76 79 74 72 63 71 1990 62 65 68 68 71 73 74 74 74 75 71 64 70 1991 65 69 71 72 71 74 76 75 74 69 63 69 71 1992 68 70 64 70 68 76 77 77 75 75 74 70 72 1993 66 63 67 70 86 82 81 83 83 77 81 75 76 1994 71 71 67 *** 74 80 79 83 79 78 74 74 *** 1995 71 74 70 69 69 74 74 76 79 76 73 79 74 1996 76 73 74 72 71 73 72 76 75 80 79 77 75 1997 81 79 81 72 72 76 80 79 79 76 78 81 78 1998 85 79 74 73 78 78 81 80 80 80 77 75 78 1999 83 75 76 70 69 71 70 66 76 74 75 74 73 2000 84 80 76 60 72 75 75 78 84 90 87 80 78 2001 87 72 72 78 77 81 82 81 82 86 77 73 79 2002 75 76 73 85 86 80 82 88 83 79 81 85 81 2003 78 78 85 79 82 86 88 82 86 78 82 82 82 MEAN 67 69 70 72 75 77 77 78 79 77 73 69 74 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 32 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. AVERAGE OF MINIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1967 *** *** 59 50 57 57 66 60 65 52 52 39 *** 1968 33 50 43 61 55 70 62 64 57 58 59 53 55 1969 51 52 60 61 60 53 71 64 64 62 54 47 58 1970 51 47 50 61 52 57 57 65 66 58 56 36 55 1971 24 31 33 54 61 58 59 61 55 62 56 37 49 1972 30 29 46 52 62 63 67 61 66 58 62 36 53 1973 21 46 50 58 53 61 62 59 62 62 51 46 53 1974 28 16 44 58 62 62 67 64 70 65 65 37 53 1975 26 42 50 61 62 64 62 62 64 61 49 51 55 1976 44 37 40 58 62 64 69 61 64 53 45 42 53 1977 14 44 48 58 66 63 67 62 64 57 50 42 53 1978 34 42 50 55 58 60 59 61 58 59 40 44 52 1979 *** 49 44 55 57 62 63 59 62 61 53 38 *** 1980 35 43 45 54 59 56 60 60 64 59 56 40 53 1981 41 34 33 48 59 63 64 64 57 59 55 36 51 1982 25 36 26 51 54 60 61 66 64 60 35 26 47 1983 33 27 37 48 60 59 57 63 66 63 62 49 52 1984 43 44 51 57 62 62 60 65 66 59 56 43 56 1985 49 49 46 61 63 61 62 60 59 64 59 47 57 1986 45 48 50 57 64 68 63 62 60 63 47 43 56 1987 44 46 38 50 60 65 63 60 62 54 46 44 53 1988 45 49 47 50 58 59 64 65 64 65 52 *** *** 1989 40 48 42 53 59 59 57 55 58 61 57 36 52 1990 31 34 49 52 56 61 60 60 50 51 53 43 50 1991 45 46 50 54 56 57 63 62 55 46 41 41 51 1992 41 40 44 57 55 65 63 55 57 50 49 50 52 1993 52 45 49 47 65 64 65 65 65 57 62 55 58 1994 53 55 45 *** 55 60 61 63 62 64 61 53 *** 1995 50 59 51 50 52 54 53 54 57 58 52 56 54 1996 56 56 52 48 49 50 42 50 56 57 56 50 52 1997 54 52 55 43 46 51 53 58 59 61 59 57 54 1998 59 57 55 53 56 55 60 64 66 64 54 58 58 1999 58 51 51 52 50 53 51 45 59 58 55 52 53 2000 56 50 48 38 51 52 50 52 58 63 58 55 53 2001 56 44 43 53 47 55 57 54 56 59 47 47 52 2002 45 47 38 60 60 51 53 65 54 47 49 55 52 2003 47 51 56 61 61 64 68 54 57 43 53 60 56 MEAN 42 44 46 54 57 59 61 60 61 58 53 46 53 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 33 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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 1967 *** *** 2 6 2 0 0 0 0 3 1 2 *** 1968 3 4 4 2 2 1 1 0 0 1 3 0 21 1969 12 2 5 4 2 1 1 1 1 2 3 1 35 1970 5 1 2 3 0 1 3 0 1 1 0 3 20 1971 1 3 4 4 0 1 0 0 0 0 4 4 21 1972 4 5 5 3 11 5 0 2 0 0 2 13 50 1973 5 5 7 7 0 2 1 1 1 0 2 7 38 1974 6 9 7 3 2 2 8 0 2 1 0 4 44 1975 6 3 4 3 6 1 0 0 2 2 4 7 38 1976 2 5 3 4 5 3 1 0 2 4 4 5 38 1977 15 1 1 4 8 1 1 2 0 3 4 1 41 1978 2 3 4 3 4 1 0 0 0 2 4 2 25 1979 4 4 3 0 3 1 0 0 0 0 1 5 21 1980 3 5 3 0 2 0 0 1 1 5 1 4 25 1981 2 3 3 5 2 3 2 0 2 4 4 4 34 1982 4 6 5 1 3 1 0 0 1 5 7 4 37 1983 4 1 2 4 8 3 0 0 3 2 2 2 31 1984 3 2 4 1 6 0 0 1 1 3 2 7 30 1985 3 4 2 1 1 0 0 3 0 1 3 3 21 1986 3 2 3 2 1 2 0 3 2 2 2 5 27 1987 0 1 7 5 2 0 2 1 1 4 1 4 28 1988 7 3 3 1 2 0 7 4 0 1 2 *** *** 1989 9 4 6 1 2 1 1 3 2 0 2 3 34 1990 9 2 5 1 1 1 5 2 1 0 2 6 35 1991 5 10 10 6 7 0 0 0 2 4 2 5 51 1992 7 10 3 8 3 4 0 1 1 1 2 3 43 1993 3 6 4 7 1 1 0 0 1 1 5 0 29 1994 1 3 4 *** 1 3 0 0 0 3 4 3 *** 1995 0 2 1 2 0 1 0 0 0 0 2 0 8 1996 2 2 3 2 2 3 0 0 0 2 2 0 18 1997 1 3 8 1 2 3 1 0 1 2 4 3 29 1998 5 5 1 5 3 1 2 4 2 1 0 1 30 1999 2 1 3 7 3 1 8 0 4 3 7 2 41 2000 6 4 3 0 1 2 2 1 3 5 1 7 35 2001 6 2 1 0 0 0 2 1 1 1 1 2 17 2002 1 2 4 6 2 1 2 0 0 2 5 7 32 2003 2 4 5 6 3 4 1 2 1 1 2 0 31 MEAN 4 4 4 3 3 1 1 1 1 2 3 4 31 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 34 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. HIGHEST AND LOWEST LIMITS FOR 37 YEARS DURING 1967-2003 ELE- JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MENT --------------------------------------------------------------------------------------------- NO. HIG. DRY 03 18.2 14.8 19.6 24.0 21.8 26.4 25.0 26.0 23.0 23.0 21.0 18.2 1 YEAR - DAY 2003-13 2003- 4 2002-27 2003- 7 2001-15 1967-16 1975-29 2002- 4 2000- 8 2003-29 2001- 7 2001-30 LOW. DRY 03 -17.8 -15.8 -8.4 -5.0 1.4 5.4 6.8 6.6 5.0 -1.6 -6.0 -14.4 2 YEAR - DAY 1977-16 1972- 4 1974- 6 1981- 1 1968- 5 1973-30 1990-28 1990-25 1991-26 1991-31 1982-27 1970-28 HIG. WET 03 9.8 8.2 15.0 13.8 18.4 19.6 20.8 20.6 19.8 15.4 13.2 13.4 3 YEAR - DAY 2002- 1 2003- 4 1968-12 1975-30 2000-27 2001-26 2003-17 2000-26 2000- 7 2003- 5 2003-11 2003-16 LOW. WET 03 -18.0 -17.6 -11.4 -8.0 -2.8 2.0 4.4 3.8 2.0 -3.6 -8.8 -15.0 4 YEAR - DAY 1977-16 1972- 4 1974- 7 1981- 1 1992- 2 1973-30 1990- 6 1990-25 1991-18 1991-31 1982-27 1970-16 HIG. DRY 09 22.0 21.8 27.0 33.6 34.4 35.2 39.0 36.2 36.0 33.6 27.6 25.0 5 YEAR - DAY 1979- 5 2001-28 2001-29 2003- 7 1970-20 2001-23 1975-25 2003-12 1979- 7 2002- 9 1979- 2 1998-10 LOW. DRY 09 -9.8 -4.8 -4.0 -2.0 6.0 8.8 14.4 15.6 11.4 5.8 -1.8 -4.8 6 YEAR - DAY 1977-16 1972- 8 1973-29 1968- 3 1968- 5 1973-30 1973-12 1969-18 1969-12 1977-26 1982-26 1972-31 HIG. WET 09 16.0 16.4 18.2 20.4 26.0 28.4 31.4 30.4 30.2 24.8 22.2 16.6 7 YEAR - DAY 1979- 5 1979-17 1978-23 1972-28 1980-22 1987-25 1975-30 1976- 7 1969- 7 1989- 7 1979- 2 1998-10 LOW. WET 09 -12.4 -7.2 -6.0 -3.2 4.6 6.0 10.2 10.0 9.2 3.0 -4.8 -8.0 8 YEAR - DAY 1977-16 1972-23 1973-29 1968- 3 1968- 5 1973-29 1973-14 1994-29 1969-12 1977-26 1982-27 1972-31 HIG. DRY 15 18.0 17.2 22.2 27.0 30.0 27.6 30.6 29.0 29.2 26.0 22.0 18.2 9 YEAR - DAY 1968-23 1979-17 1969-30 1978-23 1987-26 1967-17 1975-22 2003-12 1978-25 2003-25 1981-13 1969-23 LOW. DRY 15 -12.8 -9.0 -5.8 -3.0 4.0 6.4 10.0 10.6 9.6 3.4 -3.8 -8.0 10 YEAR - DAY 1977-16 1974- 3 1974- 5 1968- 3 1968- 5 1967- 5 1973-12 1992- 4 1992-28 1977-26 1982-26 1972-31 HIG. WET 15 11.0 12.0 20.0 16.8 20.0 22.8 25.0 25.0 23.0 20.0 17.2 13.2 11 YEAR - DAY 1968-24 1979-17 1969-30 1985-30 2001-15 1987-23 1975-30 1976- 7 2000- 8 1989- 7 1979- 2 1998- 1 LOW. WET 15 -15.0 -12.0 -8.8 -5.0 2.3 4.0 8.0 8.4 7.0 1.0 -6.4 -10.0 12 YEAR - DAY 1977-16 1974- 3 1974- 6 1981- 1 1988- 1 1973-30 1973-12 1992- 4 1992-28 1987-27 1982-26 1972-31 HIG. MIN. 12.8 12.0 17.6 23.0 18.0 20.0 21.4 21.4 20.4 21.6 18.6 16.6 13 YEAR - DAY 2002- 7 2001-28 2002-27 2003- 7 2001-15 2001-17 2002-15 2001-10 2000- 8 2003-29 2003-11 2001-29 LOW. MIN. -27.0 -23.5 -17.0 -11.0 -5.0 0.5 2.0 1.5 0.5 -7.0 -12.0 -19.5 14 YEAR - DAY 1977-16 1972- 4 1982-30 1981- 1 1988- 1 1973- 3 1990- 6 1990-25 1991-18 1991-20 1982-27 1970-16 HIG. MAX. 25.5 25.5 28.5 36.0 38.0 40.0 45.0 39.5 39.5 36.5 31.5 28.5 15 YEAR - DAY 1979- 5 2002-13 1970-31 1997-27 2001-15 1997-13 1975-26 1973-21 1979- 7 1989- 7 1994- 4 1998-10 LOW. MAX. -6.5 -2.0 -1.5 -0.5 6.0 10.5 16.0 19.0 12.0 9.5 2.0 -2.0 16 YEAR - DAY 1977-16 1968-15 1969-24 1968- 3 1968- 5 1973-30 1973-14 1990-27 1969-12 1969-30 1982-27 1972-31 HIG. PPTN 54.2 55.0 66.5 43.0 28.0 34.0 29.0 55.0 40.0 40.0 41.0 48.0 17 YEAR - DAY 1998-13 1968- 5 1992-25 1968- 3 1972-11 1976- 7 1974-31 1977-30 1969-12 1968-27 1975-29 1967-24 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 35 STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. HIGHEST LIMITS OF ABSOLUTE DIFFERENCES FOR 37 YEARS DURING 1967-2003 ELE- JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MENT --------------------------------------------------------------------------------------------- NO. DRY 09 - DRY 03 19.0 20.0 19.8 20.0 20.4 20.6 18.8 19.4 24.6 22.6 21.4 20.4 18 YEAR - DAY 1980-29 1974-17 1971- 8 1997-27 2001- 3 1990-10 1990- 6 1991-16 1990-14 1992- 8 1991- 1 1970-28 DRY 15 - DRY 09 14.0 13.0 17.0 14.2 15.2 15.0 15.6 15.4 17.8 17.0 15.0 13.6 19 YEAR - DAY 1974-16 1974-11 2003-26 1997-27 1969- 4 1997-13 1992-21 1992-12 1990-14 1992-10 1970- 1 1967-23 DRY 15 - DRY 03 14.4 13.0 14.2 14.4 16.2 12.8 14.2 12.0 15.8 14.6 14.4 17.0 20 YEAR - DAY 1980-31 1974-17 1981- 5 1970- 3 1987-26 1990-30 1991-17 1986- 4 1978-25 1992- 8 1991- 1 1970-16 WET 09 - WET 03 18.0 20.2 17.0 19.0 17.6 17.6 17.0 17.8 20.2 18.0 20.0 19.4 21 YEAR - DAY 1980-31 1981-19 1987- 3 1987- 7 1988-18 1990- 4 1991-17 1991- 2 1976-28 1991-20 1991- 1 1970-16 WET 15 - WET 09 14.4 13.4 10.8 11.6 10.4 10.6 14.6 12.2 13.4 11.6 9.2 11.2 22 YEAR - DAY 1975- 2 1981-19 2003-26 1992-27 1992- 8 1992- 2 1992-21 1980-20 1976-28 1989-12 1974-26 1974-21 WET 15 - WET 03 15.0 10.6 13.8 14.0 13.6 11.6 13.2 10.8 10.6 14.4 13.2 16.8 23 YEAR - DAY 1968- 4 1972- 4 1981- 5 1970- 3 1988-18 1990-30 1991-17 1978-13 1990-18 1991-20 1987- 6 1970-16 DAY BY DAY DRY 03 14.6 13.2 14.8 13.8 11.0 10.2 7.4 7.4 9.2 13.4 11.2 13.6 24 YEAR - DAY 2003-14 2003- 1 1968-25 2003-27 1974- 3 1969-25 1984- 1 1979-30 2000-27 2001-26 2003-12 1967-24 DAY BY DAY WET 03 10.4 11.2 13.4 11.0 10.6 7.8 7.0 6.4 7.0 9.8 10.8 13.2 25 YEAR - DAY 1971-14 2002-17 1971-20 1971- 4 1974- 3 1973-29 1984- 1 1986- 9 1980- 1 1991-23 1973-25 2003-27 DAY BY DAY DRY 09 14.6 16.2 20.6 19.4 17.2 15.0 14.2 11.4 12.8 15.2 13.6 14.6 26 YEAR - DAY 1968- 3 2002-16 1968-25 2003-27 2001- 3 1969-25 1973-31 1986- 5 1976-29 1999-13 1984-28 1967-24 DAY BY DAY WET 09 12.6 11.0 13.4 13.6 10.6 12.4 10.2 12.0 14.0 11.2 11.6 12.4 27 YEAR - DAY 1975-24 1971-13 1973-31 1987-20 1984- 1 1987-26 1973-31 1994-29 1976-29 1978- 1 1991- 1 1982-19 DAY BY DAY DRY 15 12.6 13.2 16.0 19.8 12.4 11.4 10.0 10.2 13.2 13.0 13.4 12.2 28 YEAR - DAY 1968-27 2002-27 1968-18 2003-10 1974- 3 1969-25 1991-20 1973-13 1978-26 1969-31 2001-18 1967-23 DAY BY DAY WET 15 11.0 11.4 13.0 11.2 10.2 9.2 8.4 10.0 7.0 10.0 10.0 11.0 29 YEAR - DAY 1974-15 1969-14 1969-30 1987-20 1985- 1 1973-29 1975-10 1980-20 1988- 3 1989- 7 1984-14 1971-20 DAY BY DAY MIN. 13.0 11.0 13.0 13.5 9.0 7.5 8.5 8.0 7.4 14.2 13.0 12.0 30 YEAR - DAY 1977-18 1972- 5 1971-20 1971- 4 1974- 3 1970- 8 1979- 4 1976-12 2001-25 2002- 5 1973-25 1972-27 DAY BY DAY MAX. 18.0 13.0 22.5 17.0 16.5 17.0 16.0 12.0 15.0 17.5 15.0 13.5 31 YEAR - DAY 1972- 4 1985- 6 1968-25 2003-10 2001- 3 1969-25 1973-31 1988-28 1976-29 1999-13 2000-12 1980-26 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1967 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C.***** ***** ***** ***** 16.0 17.2 19.5 21.2 17.6 14.3 11.3 7.2 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** 11.0 11.9 15.4 16.1 12.6 8.0 6.0 1.4 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** ***** 13.5 15.9 21.0 23.0 23.6 26.2 22.5 20.5 16.7 13.1 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** ***** ***** ***** 10.0 11.1 8.2 10.1 9.9 12.5 10.7 11.7 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** ***** 5.42 5.33 8.62 9.83 12.82 13.21 10.94 7.16 6.27 3.84 ***** MEAN OF MIXING RATIO AT 09 GMT. ***** ***** 6.93 5.94 10.26 10.84 13.48 14.58 12.10 8.49 6.58 4.14 ***** MEAN OF MIXING RATIO AT 15 GMT. ***** ***** 6.19 6.17 10.57 11.21 13.57 15.01 12.48 9.47 7.50 4.41 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** 6.0 4.0 13.0 11.5 7.0 2.5 -5.5 -11.0 ****** DAY ** ** ** ** 1 6 1 31 25 23 29 25 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** ***** 22.2 29.2 27.0 33.5 27.5 29.5 27.0 29.0 24.5 20.0 ****** DAY ** ** 14 24 27 17 7 17 14 11 23 17 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** ***** 22.0 11.0 17.0 4.0 1.5 1.0 3.0 26.0 8.0 48.0 ****** DAY ** ** 24 10 18 5 25 1 24 22 30 24 MONTHLY TOTAL PRECIPITATION IN MM. ***** ***** 51.5 60.0 26.5 9.0 4.0 1.0 12.0 61.0 19.0 55.0 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 17.2 31.9 5.7 45.2 NO. OF DAYS WITH PRECIPITATION. *** *** 6 14 4 4 3 1 7 9 6 2 *** NO. OF DAYS PRECIPITATION EQUAL *** *** 6 14 4 4 3 1 6 9 6 2 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** *** 2 1 1 0 0 0 0 3 0 1 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** *** 76 69 72 72 87 86 87 73 74 58 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** *** 69 52 60 58 66 60 65 54 52 42 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** *** 74 67 76 75 85 79 85 79 76 56 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** 0 0 0 0 0 0 1 4 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** 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 0 4 0 0 0 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. *** *** *** *** 0 0 0 0 0 0 1 5 *** DATE OF START AND END FREEZING START = 29 NOV. END = 30 DEC. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1968 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 6.1 2.0 8.6 7.2 13.5 16.6 20.0 20.7 18.9 15.3 10.5 6.4 12.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.2 -3.2 2.3 1.6 8.0 11.6 14.5 15.5 11.8 8.9 4.8 1.3 6.4 AVERAGE OF MAXIMUM TEMPERATURE IN C. 12.3 7.3 14.9 12.8 19.1 21.5 25.6 25.8 26.0 21.7 16.3 11.4 17.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.5 10.5 12.6 11.2 11.1 9.9 11.1 10.3 14.2 12.8 11.5 10.1 11.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.26 3.22 4.76 4.94 7.41 10.52 11.67 12.85 10.02 7.91 5.93 4.54 7.25 MEAN OF MIXING RATIO AT 09 GMT. 3.72 3.70 4.62 6.17 8.55 12.50 14.01 15.13 13.52 10.56 7.47 5.04 8.75 MEAN OF MIXING RATIO AT 15 GMT. 4.19 3.76 5.11 6.02 8.85 12.38 14.77 15.30 13.27 10.28 7.02 4.99 8.83 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -11.0 -12.5 -4.5 -5.5 0.2 7.5 9.0 12.0 8.0 2.0 0.5 -2.5 -12.5 DAY 4 18 5 2 5 10 13 27 19 28 20 21 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 20.0 14.0 26.0 22.0 29.5 29.0 39.0 33.8 34.5 29.2 25.0 17.5 39.0 DAY 23 29 23 25 30 18 20 16 27 18 27 25 24 HOUR MAXIMUM PRECIPITATION IN MM. 11.0 55.0 12.0 43.0 8.0 14.0 6.0 1.5 3.0 40.0 10.0 4.0 55.0 DAY 19 5 17 3 17 1 12 5 17 27 21 15 MONTHLY TOTAL PRECIPITATION IN MM. 24.0 150.0 43.0 73.5 18.0 30.0 12.0 2.5 5.0 49.0 43.5 17.0 467.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 46.4 26.0 4.2 23.4 NO. OF DAYS WITH PRECIPITATION. 3 6 8 6 3 8 5 2 2 5 11 7 66 NO. OF DAYS PRECIPITATION EQUAL 3 6 8 6 3 8 5 2 2 5 11 7 66 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 4 1 2 0 1 0 0 0 1 1 0 11 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 52 70 65 79 73 82 77 84 78 77 77 76 74 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 42 58 46 63 57 71 62 64 58 60 60 55 58 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 54 69 62 75 73 85 82 84 79 79 73 68 74 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 5 12 2 3 0 0 0 0 0 0 0 0 22 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 2 0 1 0 0 0 0 0 0 0 0 3 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 6 3 6 0 0 0 15 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. 10 24 11 8 0 0 0 0 0 0 0 7 60 DATE OF START AND END FREEZING START = 10 DEC. END = 11 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1969 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. -0.2 0.3 6.6 9.6 14.3 18.9 17.2 19.0 16.5 13.7 8.1 7.6 11.0 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.8 -6.4 0.9 3.8 7.8 11.6 11.8 13.0 9.8 6.9 1.0 1.0 4.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 5.3 7.1 12.3 15.5 20.7 26.3 22.7 25.0 23.2 20.4 15.1 14.3 17.3 DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.1 13.5 11.4 11.7 12.9 14.7 10.9 12.0 13.5 13.5 14.1 13.3 12.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.59 2.30 4.41 5.65 7.94 9.99 11.01 11.48 8.98 7.51 4.53 4.35 6.73 MEAN OF MIXING RATIO AT 09 GMT. 3.85 3.95 6.28 7.04 9.77 12.35 13.67 14.34 13.34 9.84 6.63 5.22 8.86 MEAN OF MIXING RATIO AT 15 GMT. 3.46 3.35 5.92 6.68 9.71 13.11 13.15 14.56 12.15 9.84 5.86 5.01 8.57 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -14.5 -13.5 -7.5 -3.0 1.0 7.0 7.5 10.5 4.5 0.5 -7.5 -2.5 -14.5 DAY 25 9 24 15 7 17 2 14 12 30 16 11 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.0 18.5 27.0 26.5 29.4 35.0 36.0 32.5 35.0 32.0 22.5 23.5 36.0 DAY 18 28 30 1 4 24 14 21 7 7 1 23 24 HOUR MAXIMUM PRECIPITATION IN MM. 21.0 6.5 10.5 29.5 15.0 5.5 5.0 9.5 40.0 10.0 12.5 6.0 40.0 DAY 7 2 21 14 7 17 9 29 12 14 15 15 MONTHLY TOTAL PRECIPITATION IN MM. 140.0 32.0 46.0 68.0 36.5 5.5 22.0 24.0 47.5 30.5 34.0 32.0 518.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 42.1 21.2 18.1 18.6 NO. OF DAYS WITH PRECIPITATION. 13 8 9 7 10 1 9 8 5 9 7 9 95 NO. OF DAYS PRECIPITATION EQUAL 13 8 9 7 10 1 8 8 5 9 7 9 94 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 6 0 1 2 1 0 0 0 1 1 1 0 13 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 60 61 75 80 80 70 84 81 79 81 70 67 74 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 63 63 65 62 60 54 73 65 65 63 58 50 62 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 65 65 78 74 79 73 83 84 81 81 73 62 75 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 20 20 2 0 0 0 0 0 0 0 5 0 47 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 5 3 1 0 0 0 0 0 0 0 0 0 9 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 7 1 2 2 2 0 0 14 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. 26 27 10 2 0 0 0 0 0 0 9 10 84 DATE OF START AND END FREEZING START = 16 NOV. END = 15 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1970 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 2.2 6.0 7.1 11.4 ***** 15.4 19.1 18.6 15.9 14.0 12.0 2.6 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -4.8 -0.9 -0.0 4.6 6.8 6.8 10.9 11.0 8.2 6.6 3.4 -6.6 3.8 AVERAGE OF MAXIMUM TEMPERATURE IN C. 9.2 13.0 14.3 18.2 ***** 24.0 27.2 26.2 23.6 21.5 20.7 11.9 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.0 13.9 14.3 13.6 ***** 17.2 16.3 15.2 15.4 14.9 17.3 18.5 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.68 3.82 4.01 6.07 7.14 6.82 9.47 10.10 7.92 7.24 5.45 2.29 6.08 MEAN OF MIXING RATIO AT 09 GMT. 4.55 4.88 5.53 8.78 11.00 12.02 14.23 15.50 13.36 9.58 9.12 4.85 9.45 MEAN OF MIXING RATIO AT 15 GMT. 4.30 4.78 5.33 7.71 9.46 9.86 12.94 13.51 11.22 9.42 7.67 3.83 8.33 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -17.5 -7.5 -9.5 1.0 3.5 2.5 7.0 8.0 4.5 2.0 0.5 -19.5 -19.5 DAY 29 1 10 25 8 10 5 5 12 26 20 16 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 18.0 19.0 28.5 27.0 ***** 30.5 32.5 37.5 38.0 33.5 29.5 25.0 ****** DAY 4 9 31 6 ** 21 9 27 29 6 7 5 24 HOUR MAXIMUM PRECIPITATION IN MM. 18.0 5.5 9.5 10.0 2.5 6.5 11.0 1.5 7.0 8.5 3.5 23.5 23.5 DAY 27 14 20 24 18 10 23 7 20 23 10 15 MONTHLY TOTAL PRECIPITATION IN MM. 73.5 9.5 26.0 30.0 7.0 11.0 33.5 5.0 26.5 10.0 7.0 59.0 298.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 36.6 16.1 21.8 25.5 NO. OF DAYS WITH PRECIPITATION. 10 3 7 6 3 3 6 4 9 2 3 6 62 NO. OF DAYS PRECIPITATION EQUAL 10 3 7 6 3 3 6 4 9 2 3 6 62 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 0 0 1 0 0 1 0 0 0 0 2 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 60 65 68 75 68 64 68 74 72 79 70 45 67 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 60 51 54 62 54 62 60 68 70 61 58 52 59 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 71 64 69 71 66 66 73 75 77 80 72 56 70 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 16 5 5 0 0 0 0 0 0 0 0 21 47 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 1 0 0 0 *** 0 0 0 0 0 0 0 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 *** 1 4 2 3 3 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 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 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 29 16 11 0 0 0 0 0 0 0 0 25 81 DATE OF START AND END FREEZING START = 3 DEC. END = 24 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1971 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 1.3 2.1 6.1 8.1 14.8 17.0 20.3 20.1 18.2 14.4 9.9 2.6 11.2 AVERAGE OF MINIMUM TEMPERATURE IN C. -7.9 -7.7 -3.6 0.4 7.3 10.1 12.5 13.6 10.3 7.8 2.6 -6.7 3.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.4 12.0 15.7 15.8 22.2 23.9 28.1 26.6 26.1 21.1 17.2 11.8 19.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 18.3 19.7 19.3 15.4 14.9 13.8 15.6 13.0 15.8 13.3 14.6 18.5 16.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 1.70 1.86 2.77 4.66 7.56 9.12 10.62 11.64 8.58 7.40 5.25 2.64 6.15 MEAN OF MIXING RATIO AT 09 GMT. 3.50 4.14 5.02 7.19 11.61 11.50 15.57 14.93 13.11 10.63 7.71 5.18 9.17 MEAN OF MIXING RATIO AT 15 GMT. 2.53 3.33 4.33 6.05 10.05 10.94 14.34 14.12 12.24 9.40 7.01 4.01 8.20 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -16.5 -14.0 -11.5 -8.5 2.0 5.5 10.0 10.5 4.5 3.5 -4.5 -18.5 -18.5 DAY 15 14 6 4 2 20 4 4 20 11 21 20 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 22.5 20.5 24.5 23.5 28.5 34.0 35.5 31.5 32.5 29.0 20.5 20.5 35.5 DAY 2 27 18 27 6 22 21 3 9 23 15 12 24 HOUR MAXIMUM PRECIPITATION IN MM. 6.0 10.0 55.0 10.0 4.0 11.0 0.0 0.0 0.0 4.5 19.5 28.5 55.0 DAY 31 14 21 26 2 20 ** ** ** 30 11 30 MONTHLY TOTAL PRECIPITATION IN MM. 16.0 29.5 93.5 55.0 23.0 12.5 0.0 0.0 0.0 7.0 41.0 58.0 335.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 41.4 27.0 0.0 31.6 NO. OF DAYS WITH PRECIPITATION. 5 4 6 11 10 2 0 0 0 2 4 6 50 NO. OF DAYS PRECIPITATION EQUAL 5 4 6 11 10 2 0 0 0 2 4 6 50 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 2 1 0 1 0 0 0 0 1 2 8 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 36 42 48 65 71 75 71 77 71 74 70 43 62 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 40 42 43 60 66 60 61 63 56 65 59 56 56 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 39 54 55 68 73 74 73 80 71 75 73 55 66 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 21 23 14 3 0 0 0 0 0 0 1 20 82 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 0 3 6 4 2 0 0 0 15 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. 26 27 21 11 0 0 0 0 0 0 3 30 118 DATE OF START AND END FREEZING START = 21 NOV. END = 25 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1972 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. -4.8 -5.0 0.5 11.7 10.1 17.6 20.0 20.1 19.6 18.1 12.7 0.8 10.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -13.4 -14.6 -8.6 2.4 2.0 9.8 12.5 12.3 12.0 9.4 5.3 -6.9 1.8 AVERAGE OF MAXIMUM TEMPERATURE IN C. 3.7 4.6 9.6 21.0 18.1 25.5 27.5 27.9 27.2 26.8 20.2 8.6 18.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 17.1 19.2 18.2 18.6 16.1 15.7 15.0 15.6 15.2 17.4 14.9 15.5 16.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 1.11 1.01 2.44 5.84 6.15 9.15 11.61 11.46 10.42 8.71 6.53 2.09 6.38 MEAN OF MIXING RATIO AT 09 GMT. 2.83 2.93 4.41 8.68 9.07 14.57 16.90 15.57 15.74 13.52 10.41 4.13 9.90 MEAN OF MIXING RATIO AT 15 GMT. 1.90 2.01 3.84 7.60 7.95 11.72 13.88 12.98 13.14 10.82 7.52 2.92 8.02 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -20.5 -23.5 -15.5 -2.5 0.5 3.0 6.5 8.2 8.5 5.5 1.0 -17.0 -23.5 DAY 23 4 20 5 1 25 3 4 21 27 29 31 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.5 15.0 18.5 29.5 30.0 30.0 35.5 34.5 31.0 32.5 26.5 17.0 35.5 DAY 13 17 29 21 26 21 24 19 3 20 5 3 24 HOUR MAXIMUM PRECIPITATION IN MM. 16.0 16.5 13.5 21.0 28.0 11.0 2.0 13.5 0.0 2.5 10.0 23.0 28.0 DAY 30 20 20 25 11 17 31 4 ** 30 8 1 MONTHLY TOTAL PRECIPITATION IN MM. 64.5 69.0 52.5 43.5 146.0 51.5 3.5 23.5 0.0 4.5 24.5 187.0 670.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 27.8 36.0 4.0 32.2 NO. OF DAYS WITH PRECIPITATION. 9 9 6 3 14 8 2 4 0 2 4 18 79 NO. OF DAYS PRECIPITATION EQUAL 9 9 6 3 14 8 2 4 0 2 4 18 79 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 3 3 3 5 1 0 1 0 0 1 8 27 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 35 34 53 64 70 69 74 78 78 71 69 44 62 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 52 53 59 55 66 69 70 63 67 60 67 55 61 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 45 47 66 65 74 73 75 73 81 73 67 51 66 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 31 29 27 0 0 0 0 0 0 0 0 20 107 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 7 9 0 0 0 0 0 0 0 0 0 1 17 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 1 1 5 6 4 5 0 0 22 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 29 29 6 0 0 0 0 0 0 0 28 123 DATE OF START AND END FREEZING START = 2 DEC. END = 26 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1973 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. -1.2 5.6 5.2 7.8 10.9 12.3 15.1 21.1 19.1 14.5 7.3 3.8 10.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -10.9 -1.9 -1.4 1.5 4.1 5.2 7.8 12.3 10.9 6.5 -0.1 -4.1 2.5 AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.5 13.2 11.9 14.0 17.8 19.5 22.5 29.9 27.3 22.5 14.6 11.7 17.8 DIFFERENCE BETWEEN AVERAGE MAXIMUM 19.4 15.1 13.3 12.5 13.7 14.3 14.7 17.6 16.4 16.0 14.7 15.8 15.3 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 0.83 3.24 3.62 4.54 5.69 6.77 7.72 10.83 10.01 6.92 3.87 2.86 5.58 MEAN OF MIXING RATIO AT 09 GMT. 3.90 5.90 5.50 6.65 7.52 10.20 11.61 16.28 14.50 11.42 6.81 5.33 8.80 MEAN OF MIXING RATIO AT 15 GMT. 1.69 4.33 4.70 5.75 6.75 8.03 9.23 13.61 12.05 8.54 5.07 3.88 6.97 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -15.5 -8.0 -14.5 -7.0 1.5 0.5 4.0 8.5 7.0 2.5 -7.5 -15.5 -15.5 DAY 17 3 29 5 16 3 5 3 27 27 25 31 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.0 20.5 20.0 19.0 22.5 27.5 38.5 39.5 32.5 28.0 20.5 19.5 39.5 DAY 27 19 19 28 18 13 30 21 12 6 23 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 18.0 10.0 16.0 27.5 2.0 6.0 8.0 6.5 9.0 4.5 7.5 17.5 27.5 DAY 16 2 29 14 1 29 8 30 7 28 7 29 MONTHLY TOTAL PRECIPITATION IN MM. 54.0 36.5 72.0 86.0 2.0 22.0 17.5 6.5 13.0 7.0 25.5 71.0 413.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 39.3 26.6 9.0 25.1 NO. OF DAYS WITH PRECIPITATION. 6 5 9 9 1 6 5 1 3 2 5 12 64 NO. OF DAYS PRECIPITATION EQUAL 6 5 9 9 1 6 4 1 3 2 5 11 62 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 2 2 2 0 0 0 0 0 0 0 2 10 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 23 56 58 63 69 70 68 70 74 70 56 51 61 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 50 59 60 65 56 67 68 61 63 67 65 61 62 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 37 60 65 67 70 69 69 72 72 69 62 60 64 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 30 11 10 1 0 0 0 0 0 0 7 16 75 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 0 0 2 16 10 0 0 0 28 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 14 13 3 0 0 0 0 0 0 12 22 94 DATE OF START AND END FREEZING START = 6 NOV. END = 13 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1974 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. -1.6 -4.4 2.3 8.2 15.6 19.1 18.3 20.2 16.9 13.1 9.2 2.3 9.9 AVERAGE OF MINIMUM TEMPERATURE IN C. -10.5 -14.8 -6.2 1.7 8.3 11.5 11.4 12.7 9.4 5.4 1.1 -7.7 1.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.4 6.0 10.8 14.6 22.9 26.7 25.2 27.8 24.4 20.8 17.2 12.2 18.0 DIFFERENCE BETWEEN AVERAGE MAXIMUM 17.9 20.7 17.0 12.9 14.6 15.2 13.8 15.1 15.0 15.4 16.1 19.9 16.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 1.03 0.60 2.47 4.91 7.86 10.37 9.80 11.21 8.98 6.45 4.46 1.86 5.83 MEAN OF MIXING RATIO AT 09 GMT. 3.72 2.53 5.18 7.04 11.43 14.23 14.19 14.95 13.18 10.71 9.15 5.87 9.35 MEAN OF MIXING RATIO AT 15 GMT. 2.07 0.84 3.56 5.97 9.63 12.25 11.79 13.01 10.92 8.26 6.60 3.17 7.34 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -14.5 -18.0 -15.0 -6.5 0.5 7.5 8.5 9.5 5.5 2.0 -5.5 -16.5 -18.0 DAY 8 27 7 4 1 8 19 25 27 29 27 27 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 10.8 12.0 19.5 25.0 30.5 35.5 31.5 36.0 34.0 28.0 21.0 19.5 36.0 DAY 3 10 21 23 22 25 3 15 18 17 11 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 33.5 22.5 21.5 19.5 15.0 14.5 29.0 4.5 16.0 8.5 2.0 15.0 33.5 DAY 25 19 5 11 1 12 31 1 13 7 7 23 MONTHLY TOTAL PRECIPITATION IN MM. 100.5 143.5 79.0 60.0 38.0 31.0 105.5 15.0 45.5 22.5 3.5 59.0 703.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 45.9 18.3 23.6 12.1 NO. OF DAYS WITH PRECIPITATION. 16 13 8 8 5 6 12 4 8 5 2 8 95 NO. OF DAYS PRECIPITATION EQUAL 16 13 8 8 5 6 12 4 8 5 2 8 95 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 7 3 2 2 1 3 0 2 0 0 2 24 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 33 26 51 69 71 76 73 78 77 74 70 40 62 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 55 42 62 65 66 64 74 66 73 69 72 64 64 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 46 25 57 69 72 74 76 76 79 74 72 52 64 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 31 28 20 3 0 0 0 0 0 0 1 22 105 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 1 6 4 10 2 0 0 0 23 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 28 22 7 0 0 0 0 0 0 4 27 119 DATE OF START AND END FREEZING START = 26 NOV. END = 8 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1975 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 0.3 3.1 6.6 12.8 16.2 19.8 23.6 21.7 19.4 12.9 7.1 3.4 12.2 AVERAGE OF MINIMUM TEMPERATURE IN C. -11.3 -4.6 -2.0 4.8 7.5 10.6 13.5 11.9 10.4 4.5 -1.5 -4.0 3.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.9 10.8 15.2 20.8 24.9 29.0 33.7 31.5 28.3 21.3 15.6 10.8 21.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 23.2 15.3 17.2 16.1 17.4 18.4 20.2 19.6 17.9 16.8 17.1 14.8 17.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 1.03 2.57 3.41 5.95 7.58 9.53 11.85 10.90 9.80 5.89 3.46 2.93 6.24 MEAN OF MIXING RATIO AT 09 GMT. 5.27 4.61 7.06 9.43 12.02 16.39 20.15 17.24 15.63 10.13 6.24 4.76 10.75 MEAN OF MIXING RATIO AT 15 GMT. 1.62 3.53 4.82 7.84 9.76 12.81 15.62 13.71 12.27 7.48 4.86 3.56 8.16 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -17.0 -11.0 -9.5 1.0 3.5 5.5 8.0 8.5 6.5 0.5 -10.5 -8.5 -17.0 DAY 20 13 5 24 9 1 7 17 23 16 30 5 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.5 16.0 25.0 28.5 31.5 36.0 45.0 37.0 38.0 30.0 25.0 18.5 45.0 DAY 1 21 27 30 20 23 26 6 6 8 21 10 24 HOUR MAXIMUM PRECIPITATION IN MM. 15.0 17.0 15.0 33.5 14.5 7.0 0.0 4.0 22.5 12.5 41.0 23.5 41.0 DAY 18 3 2 24 7 3 ** 18 24 17 29 31 MONTHLY TOTAL PRECIPITATION IN MM. 75.0 61.0 61.0 70.0 58.0 15.5 0.0 4.0 44.5 31.0 78.0 96.5 594.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 33.1 24.1 8.2 34.6 NO. OF DAYS WITH PRECIPITATION. 11 9 10 4 6 3 0 1 7 6 7 7 71 NO. OF DAYS PRECIPITATION EQUAL 11 9 10 4 6 3 0 1 7 6 7 7 71 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 3 2 2 3 0 0 0 1 1 3 6 24 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 33 49 56 68 69 70 73 72 74 66 56 61 62 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 61 55 64 65 64 68 63 64 67 67 60 58 63 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 33 56 60 70 72 72 69 68 73 67 63 62 64 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 31 15 13 0 0 0 0 0 0 0 9 19 87 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 3 14 22 23 11 1 0 0 74 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 5 0 0 0 0 0 5 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 2 0 0 0 0 0 2 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 31 25 19 0 0 0 0 0 0 0 14 27 116 DATE OF START AND END FREEZING START = 4 NOV. END = 22 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1976 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 2.8 0.2 1.8 10.9 14.1 18.0 19.8 22.3 18.0 10.1 5.4 2.6 10.5 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.4 -7.5 -7.1 3.1 6.4 9.8 12.2 12.9 9.4 1.1 -3.4 -5.7 2.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.0 7.8 10.7 18.7 21.8 26.2 27.3 31.6 26.6 19.0 14.3 11.0 18.8 DIFFERENCE BETWEEN AVERAGE MAXIMUM 16.4 15.3 17.8 15.6 15.4 16.5 15.1 18.7 17.2 17.9 17.7 16.7 16.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.30 1.75 2.16 5.38 6.86 9.24 11.31 11.41 8.88 4.61 2.75 2.16 5.73 MEAN OF MIXING RATIO AT 09 GMT. 4.59 3.48 4.17 8.32 10.56 13.31 15.67 16.71 14.16 8.03 5.93 4.41 9.11 MEAN OF MIXING RATIO AT 15 GMT. 3.49 2.87 3.18 6.51 8.58 11.20 13.23 13.96 11.15 5.93 4.18 3.42 7.31 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -9.5 -14.0 -11.5 -5.0 2.0 5.0 7.5 10.0 5.5 -4.5 -9.5 -9.5 -14.0 DAY 8 17 10 3 9 1 2 19 13 20 15 31 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.0 15.5 20.0 28.5 30.5 39.0 36.5 39.5 35.0 29.0 24.0 17.5 39.5 DAY 24 9 30 13 21 24 31 7 28 15 25 8 24 HOUR MAXIMUM PRECIPITATION IN MM. 8.5 17.5 16.5 14.5 27.5 34.0 11.5 0.0 20.5 32.5 11.5 23.5 34.0 DAY 1 16 22 18 8 7 24 ** 15 4 27 31 MONTHLY TOTAL PRECIPITATION IN MM. 16.5 59.5 50.0 44.5 97.5 55.0 15.0 0.0 29.5 58.0 34.0 81.0 540.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 23.3 36.4 8.2 32.0 NO. OF DAYS WITH PRECIPITATION. 2 10 7 6 7 4 3 0 4 4 5 6 58 NO. OF DAYS PRECIPITATION EQUAL 2 10 7 6 7 4 3 0 4 4 5 6 58 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 2 2 4 2 1 0 1 2 1 3 19 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 49 41 48 69 67 73 78 75 74 60 48 49 61 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 58 53 55 64 67 67 71 62 67 60 59 56 62 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 61 55 53 63 69 72 77 72 72 60 58 58 64 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 25 25 26 1 0 0 0 0 0 1 16 24 118 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 1 5 8 18 5 0 0 0 37 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 27 29 2 0 0 0 0 0 9 25 31 154 DATE OF START AND END FREEZING START = 18 OCT. END = 3 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. -7.4 3.3 7.1 11.0 14.6 19.1 18.0 20.5 18.2 11.4 7.3 2.4 10.5 AVERAGE OF MINIMUM TEMPERATURE IN C. -16.3 -5.9 -1.6 2.0 7.4 11.1 10.1 11.8 10.3 3.2 -1.8 -6.4 2.0 AVERAGE OF MAXIMUM TEMPERATURE IN C. 1.6 12.6 15.8 20.0 21.8 27.0 25.9 29.2 26.0 19.6 16.4 11.3 18.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 17.9 18.5 17.4 18.0 14.4 15.9 15.8 17.4 15.7 16.4 18.2 17.7 16.9 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 0.57 2.17 3.44 4.83 7.61 10.27 9.21 10.72 9.54 5.51 3.61 2.14 5.80 MEAN OF MIXING RATIO AT 09 GMT. 1.49 5.25 6.23 8.86 11.27 14.54 14.18 16.45 14.01 9.31 6.33 4.37 9.36 MEAN OF MIXING RATIO AT 15 GMT. 1.10 3.85 4.88 6.59 9.07 12.24 11.38 13.52 11.53 6.91 4.78 3.12 7.41 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -27.0 -11.5 -8.5 -4.0 4.0 5.5 5.5 7.5 7.5 -5.0 -7.5 -11.0 -27.0 DAY 16 27 9 3 7 30 6 30 30 26 15 23 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 12.0 19.0 25.0 26.0 30.0 34.0 34.5 38.0 32.5 31.0 21.5 18.0 38.0 DAY 27 19 3 15 13 11 27 25 26 3 29 5 24 HOUR MAXIMUM PRECIPITATION IN MM. 28.0 5.0 14.0 18.5 22.0 9.5 5.0 55.0 4.5 17.0 29.0 8.0 55.0 DAY 6 8 23 8 29 1 19 30 1 22 14 29 MONTHLY TOTAL PRECIPITATION IN MM. 215.0 7.5 21.0 62.0 120.5 13.5 22.4 71.0 4.5 43.6 78.5 31.5 691.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 35.2 28.4 14.2 22.2 NO. OF DAYS WITH PRECIPITATION. 20 2 4 9 12 2 6 4 1 5 5 8 78 NO. OF DAYS PRECIPITATION EQUAL 20 2 4 9 12 2 6 4 1 5 5 8 78 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 8 0 1 2 5 0 0 2 0 2 4 0 24 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 24 46 54 62 75 73 71 71 73 65 61 48 60 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 34 61 59 63 70 65 69 63 66 65 57 56 61 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 31 58 60 64 74 73 73 70 72 64 60 55 63 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 31 22 9 1 0 0 0 0 0 1 7 26 97 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 11 0 0 0 0 0 0 0 0 0 0 0 11 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 2 7 5 15 3 1 0 0 33 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 27 18 4 0 0 0 0 0 6 18 30 134 DATE OF START AND END FREEZING START = 24 OCT. END = 8 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. -0.9 3.2 7.3 12.4 12.4 15.3 20.0 20.1 20.2 15.5 4.5 6.8 11.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -9.6 -5.4 -2.1 3.3 3.9 5.8 9.8 9.9 9.1 5.9 -4.1 -2.3 2.0 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.8 11.8 16.7 21.4 20.9 24.8 30.1 30.4 31.3 25.0 13.0 15.9 20.8 DIFFERENCE BETWEEN AVERAGE MAXIMUM 17.4 17.2 18.8 18.1 17.0 19.0 20.3 20.5 22.2 19.1 17.1 18.2 18.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 1.38 2.42 3.54 5.36 5.78 7.18 9.31 9.63 9.16 6.59 2.37 3.49 5.52 MEAN OF MIXING RATIO AT 09 GMT. 3.48 4.76 6.92 9.71 9.46 11.31 15.35 15.34 15.76 11.15 5.18 6.03 9.54 MEAN OF MIXING RATIO AT 15 GMT. 2.27 3.56 5.11 7.26 7.15 8.86 11.81 11.95 12.12 9.29 4.03 4.35 7.31 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -14.5 -11.0 -9.0 -2.5 -2.5 0.5 6.5 7.0 5.0 3.0 -9.0 -8.5 -14.5 DAY 14 23 7 14 3 9 5 13 27 13 5 24 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.0 20.0 26.5 29.5 30.5 31.5 37.5 38.0 38.0 34.0 20.5 21.5 38.0 DAY 4 19 24 28 13 16 17 14 4 7 7 7 24 HOUR MAXIMUM PRECIPITATION IN MM. 15.0 25.0 9.0 17.0 11.0 6.0 0.0 0.0 0.0 9.5 16.5 12.0 25.0 DAY 21 12 13 14 23 28 ** ** ** 31 13 13 MONTHLY TOTAL PRECIPITATION IN MM. 38.0 49.5 35.5 38.0 52.0 10.0 0.0 0.0 0.0 22.0 47.0 29.5 321.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 38.3 31.1 0.0 30.6 NO. OF DAYS WITH PRECIPITATION. 6 6 6 5 10 3 0 0 0 4 7 6 53 NO. OF DAYS PRECIPITATION EQUAL 6 6 6 5 10 3 0 0 0 4 7 6 53 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 1 0 1 1 0 0 0 0 0 1 1 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 38 47 59 63 66 68 68 70 69 64 44 58 60 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 55 57 57 62 64 62 61 63 62 64 57 57 60 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 49 55 61 62 63 66 68 67 66 69 60 55 62 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 31 20 13 0 0 0 0 0 0 0 19 7 90 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 2 0 0 0 0 0 0 0 0 0 0 0 2 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 1 3 18 14 18 3 0 0 57 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 23 17 3 4 0 0 0 0 0 27 19 124 DATE OF START AND END FREEZING START = 2 NOV. END = 7 MAY IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 3.6 5.4 5.4 13.0 14.2 18.1 21.0 20.9 19.7 16.2 10.7 4.4 12.7 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.1 -4.0 -4.6 3.6 5.4 9.1 11.6 11.2 9.3 5.9 0.7 -5.3 3.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 12.2 14.7 15.3 22.4 23.0 27.1 30.4 30.6 30.1 26.6 20.6 13.8 22.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 17.3 18.7 19.9 18.8 17.6 18.0 18.8 19.4 20.8 20.7 19.9 19.1 19.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** 3.39 3.15 5.65 6.47 9.13 10.50 10.11 9.09 7.04 4.66 2.57 ***** MEAN OF MIXING RATIO AT 09 GMT. 4.65 5.59 6.32 9.67 10.32 13.05 16.77 17.21 16.39 12.53 8.85 4.95 10.52 MEAN OF MIXING RATIO AT 15 GMT. 3.56 4.56 4.60 7.45 8.24 10.63 13.58 13.93 13.08 9.90 6.52 3.48 8.29 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -9.5 -9.5 -11.0 0.5 1.5 5.0 8.0 7.0 4.0 2.0 -6.0 -9.5 -11.0 DAY 11 25 6 29 2 1 1 1 24 28 25 17 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 25.5 23.5 24.0 29.5 29.5 34.0 36.0 36.0 39.5 34.0 31.0 20.5 39.5 DAY 5 17 22 10 15 30 26 16 7 4 2 5 24 HOUR MAXIMUM PRECIPITATION IN MM. 9.0 18.0 25.0 0.0 17.0 9.0 0.0 0.0 4.0 0.0 9.0 33.0 33.0 DAY 11 18 28 ** 8 16 ** ** 13 ** 5 16 MONTHLY TOTAL PRECIPITATION IN MM. 42.0 62.5 51.0 0.0 42.5 13.5 0.0 0.0 7.5 0.0 13.5 105.0 337.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 46.1 16.6 2.2 35.1 NO. OF DAYS WITH PRECIPITATION. 7 10 5 0 5 3 0 0 2 0 2 6 40 NO. OF DAYS PRECIPITATION EQUAL 7 10 5 0 5 3 0 0 2 0 2 6 40 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 3 2 0 2 0 0 0 0 0 0 4 11 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** 59 49 64 63 73 71 66 69 68 60 42 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 54 60 59 62 62 65 67 63 65 65 62 55 62 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 51 61 56 62 65 69 72 67 70 71 65 50 63 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 20 15 16 0 0 0 0 0 0 0 5 22 78 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 0 8 17 20 16 6 1 0 68 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. 24 21 25 0 0 0 0 0 0 0 13 26 109 DATE OF START AND END FREEZING START = 12 NOV. END = 29 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1980 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 1.1 0.1 5.2 13.7 15.5 18.7 21.9 19.6 18.2 13.6 11.9 5.6 12.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -8.6 -8.0 -4.9 4.2 6.2 8.7 11.2 10.2 9.0 4.6 3.0 -4.0 2.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.9 8.2 15.3 23.2 24.8 28.7 32.5 29.0 27.3 22.5 20.7 15.2 21.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 19.5 16.2 20.2 19.0 18.6 20.0 21.3 18.8 18.3 17.9 17.7 19.2 18.9 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 1.65 1.91 2.71 5.73 7.25 8.53 10.06 9.50 8.82 6.29 5.11 2.64 5.85 MEAN OF MIXING RATIO AT 09 GMT. 4.53 4.13 6.40 10.21 12.32 13.66 18.86 16.33 14.08 10.93 8.92 5.72 10.51 MEAN OF MIXING RATIO AT 15 GMT. 2.87 2.77 4.52 7.59 9.28 11.55 14.20 12.16 11.05 7.96 6.64 4.01 7.88 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -15.5 -15.5 -11.0 1.2 2.5 5.5 8.5 7.0 5.0 0.5 -2.0 -9.0 -15.5 DAY 25 25 16 19 16 19 2 31 29 21 25 26 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.0 17.0 25.5 29.0 33.0 35.0 39.5 36.0 35.5 33.0 28.5 24.5 39.5 DAY 29 17 29 5 21 4 26 17 24 3 22 5 24 HOUR MAXIMUM PRECIPITATION IN MM. 11.5 23.0 19.0 2.5 8.5 3.0 0.0 5.0 8.0 22.5 6.0 12.0 23.0 DAY 24 25 4 15 10 24 ** 30 23 21 11 26 MONTHLY TOTAL PRECIPITATION IN MM. 33.5 68.0 44.0 4.5 28.5 5.5 0.0 23.0 8.0 68.5 18.0 39.0 340.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 42.7 11.3 9.1 36.9 NO. OF DAYS WITH PRECIPITATION. 5 6 5 2 6 2 0 8 1 9 6 7 57 NO. OF DAYS PRECIPITATION EQUAL 5 6 5 2 6 2 0 8 1 9 6 7 57 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 3 2 0 0 0 0 0 0 3 0 1 10 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 41 48 49 63 67 65 67 68 72 68 62 46 60 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 55 63 60 61 65 59 65 67 67 65 61 54 62 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 50 55 62 62 65 66 64 68 71 64 64 55 62 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 30 28 19 0 0 0 0 0 0 0 0 18 95 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 8 11 24 13 7 4 0 0 67 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 29 24 0 0 0 0 0 0 0 2 25 111 DATE OF START AND END FREEZING START = 24 NOV. END = 28 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1981 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 4.8 2.6 5.2 9.1 14.4 18.9 20.5 21.3 17.6 12.4 9.8 3.6 11.7 AVERAGE OF MINIMUM TEMPERATURE IN C. -4.4 -7.6 -5.7 -0.7 5.2 9.6 11.3 12.7 8.1 3.1 0.3 -5.8 2.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 14.1 12.6 16.0 19.0 23.6 28.2 29.6 29.9 26.9 21.8 19.2 13.0 21.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 18.5 20.2 21.7 19.7 18.4 18.6 18.3 17.2 18.8 18.7 18.9 18.8 19.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.72 1.65 2.18 3.89 6.47 9.24 10.58 11.40 8.20 5.28 4.31 2.29 5.68 MEAN OF MIXING RATIO AT 09 GMT. 5.24 4.91 5.99 7.38 10.85 14.92 17.79 17.96 13.44 10.33 8.67 4.62 10.17 MEAN OF MIXING RATIO AT 15 GMT. 3.91 3.26 4.24 5.49 8.04 12.01 13.77 14.34 11.18 7.75 6.22 3.20 7.78 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -10.0 -12.0 -12.5 -11.0 2.0 5.0 7.5 10.0 3.5 1.0 -8.0 -11.0 -12.5 DAY 2 22 2 1 26 5 4 30 25 18 24 25 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 20.5 19.5 25.0 27.0 31.0 36.0 36.0 34.5 35.0 27.5 28.0 19.5 36.0 DAY 18 9 20 16 8 23 9 17 7 15 12 6 24 HOUR MAXIMUM PRECIPITATION IN MM. 18.0 15.0 10.0 18.0 9.0 17.0 12.0 4.0 18.0 19.0 22.0 15.0 22.0 DAY 12 3 3 2 15 25 21 16 24 19 30 26 MONTHLY TOTAL PRECIPITATION IN MM. 43.0 31.0 26.0 67.0 24.0 59.8 19.0 6.0 24.5 45.5 52.0 46.5 444.3 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 22.5 33.9 11.1 32.4 NO. OF DAYS WITH PRECIPITATION. 8 4 4 7 4 9 3 2 2 6 6 7 62 NO. OF DAYS PRECIPITATION EQUAL 8 4 4 7 4 9 3 2 2 6 6 7 62 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 1 1 3 0 3 1 0 1 2 1 2 16 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 49 37 38 56 67 69 75 72 69 67 60 47 59 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 56 54 55 58 64 66 68 69 63 65 64 51 61 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 56 49 51 57 66 73 69 70 67 66 64 46 61 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 18 24 20 5 0 0 0 0 0 0 4 22 93 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 3 8 18 16 4 0 0 0 49 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. 28 27 27 11 0 0 0 0 0 0 12 28 133 DATE OF START AND END FREEZING START = 6 NOV. END = 23 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1982 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. -1.8 -1.4 -0.8 9.9 12.8 16.4 20.7 18.5 17.2 12.2 2.4 -0.1 8.8 AVERAGE OF MINIMUM TEMPERATURE IN C. -11.2 -9.8 -10.5 -0.5 3.0 6.0 10.5 10.2 9.0 4.1 -6.4 -9.3 -0.4 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.6 7.0 8.8 20.3 22.6 26.8 31.0 26.7 25.5 20.3 11.3 9.0 18.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 18.8 16.8 19.3 20.8 19.6 20.7 20.5 16.5 16.5 16.2 17.7 18.3 18.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 1.04 1.39 1.10 4.04 5.60 6.78 9.83 9.75 8.85 6.18 1.91 1.31 4.82 MEAN OF MIXING RATIO AT 09 GMT. 2.63 3.51 3.42 8.63 10.42 13.83 17.32 15.07 13.43 9.73 4.85 3.50 8.86 MEAN OF MIXING RATIO AT 15 GMT. 1.59 2.21 2.10 6.56 7.18 10.34 13.40 12.00 11.34 7.28 3.38 2.01 6.62 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -16.0 -14.5 -17.0 -10.0 -3.0 2.5 5.5 7.5 7.0 0.5 -12.0 -15.0 -17.0 DAY 18 20 30 1 6 6 7 9 21 27 27 8 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 12.5 12.5 15.5 29.0 32.0 34.5 39.5 34.0 30.5 27.0 23.0 16.0 39.5 DAY 8 5 18 23 14 16 15 21 9 16 6 14 24 HOUR MAXIMUM PRECIPITATION IN MM. 13.0 15.0 20.5 9.0 8.0 6.0 0.0 2.8 7.0 25.0 20.0 8.0 25.0 DAY 29 18 25 22 27 27 ** 10 29 9 11 30 MONTHLY TOTAL PRECIPITATION IN MM. 46.0 61.0 58.0 13.0 28.5 16.0 0.0 2.8 9.0 80.0 80.0 26.0 420.3 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 39.3 13.7 2.8 44.3 NO. OF DAYS WITH PRECIPITATION. 7 9 8 3 5 5 0 1 2 7 11 4 62 NO. OF DAYS PRECIPITATION EQUAL 7 9 8 3 5 5 0 1 2 7 11 4 62 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 3 2 0 0 0 0 0 0 4 3 0 15 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 30 39 30 57 65 65 69 76 77 69 39 33 54 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 43 61 50 62 63 67 64 69 67 66 57 50 60 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 35 50 42 59 59 67 68 74 74 65 51 38 57 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 31 28 31 6 0 0 0 0 0 0 23 30 149 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 2 7 15 6 1 0 0 0 31 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 28 31 10 3 0 0 0 0 0 27 30 160 DATE OF START AND END FREEZING START = 2 NOV. END = 9 MAY IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. -0.9 2.4 1.0 9.8 14.9 16.1 17.9 18.3 15.8 13.9 11.6 3.3 10.3 AVERAGE OF MINIMUM TEMPERATURE IN C. -9.2 -7.2 -6.7 1.8 5.9 7.9 8.2 9.1 7.4 5.4 3.9 -4.4 1.8 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.4 12.0 8.8 17.7 24.0 24.4 27.6 27.4 24.2 22.3 19.3 10.9 18.8 DIFFERENCE BETWEEN AVERAGE MAXIMUM 16.6 19.2 15.5 15.9 18.1 16.5 19.4 18.3 16.8 16.9 15.4 15.3 17.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 1.47 1.51 2.19 4.66 6.59 7.87 8.11 8.73 7.76 6.45 5.76 2.90 5.33 MEAN OF MIXING RATIO AT 09 GMT. 3.13 4.39 3.73 6.68 11.01 11.15 12.68 13.90 12.53 10.47 8.76 5.41 8.65 MEAN OF MIXING RATIO AT 15 GMT. 2.40 2.96 2.72 5.51 8.76 9.52 10.40 10.84 9.48 8.58 7.33 3.99 6.87 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -15.0 -12.5 -12.5 -4.5 3.5 3.5 6.5 6.5 4.5 2.5 0.5 -14.0 -15.0 DAY 27 11 6 1 26 30 1 25 30 29 26 21 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.5 18.5 16.0 28.0 30.0 30.0 32.0 32.0 28.0 28.0 24.0 19.0 32.0 DAY 23 2 27 18 9 17 14 14 21 29 18 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 13.0 14.0 15.0 9.0 18.0 10.0 0.0 4.0 17.0 14.0 6.0 18.0 18.0 DAY 13 17 23 25 24 3 ** 29 14 7 26 12 MONTHLY TOTAL PRECIPITATION IN MM. 40.0 16.0 29.0 34.0 84.0 30.0 0.0 6.0 45.0 21.0 11.0 36.0 352.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 24.1 42.0 14.5 19.3 NO. OF DAYS WITH PRECIPITATION. 5 2 6 7 12 6 0 2 7 2 2 6 57 NO. OF DAYS PRECIPITATION EQUAL 5 2 6 7 12 6 0 2 7 2 2 6 57 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 1 1 0 2 1 0 0 2 1 0 1 11 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 36 31 46 63 67 70 69 72 73 69 68 56 60 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 50 53 54 53 64 61 58 65 69 67 66 64 60 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 48 47 48 59 68 71 70 74 73 72 70 58 63 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 27 24 23 1 0 0 0 0 0 0 0 19 94 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 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 1 1 6 8 0 0 0 0 16 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 28 29 5 0 0 0 0 0 0 0 21 112 DATE OF START AND END FREEZING START = 6 DEC. END = 14 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 0.2 -1.6 3.3 11.3 11.1 16.2 20.0 19.8 17.7 12.7 8.8 0.2 10.0 AVERAGE OF MINIMUM TEMPERATURE IN C. -6.9 -8.3 -3.5 2.6 3.5 7.6 10.4 11.5 9.8 3.8 0.4 -6.6 2.0 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.3 5.2 10.1 20.0 18.8 24.8 29.5 28.0 25.5 21.7 17.1 6.9 17.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.2 13.5 13.6 17.4 15.3 17.2 19.1 16.5 15.7 17.9 16.7 13.5 15.9 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.08 1.92 2.94 5.49 5.52 8.08 9.62 10.45 9.33 5.99 4.43 2.25 5.67 MEAN OF MIXING RATIO AT 09 GMT. 3.67 3.14 5.14 8.44 8.66 12.02 14.98 14.55 13.48 9.70 7.82 3.42 8.75 MEAN OF MIXING RATIO AT 15 GMT. 3.02 2.60 4.21 6.94 7.40 10.16 12.08 13.04 11.13 8.09 6.32 2.57 7.30 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -12.0 -12.5 -7.0 -2.5 1.5 3.5 4.0 7.5 6.5 -3.0 -7.5 -11.0 -12.5 DAY 31 21 23 4 2 23 1 12 29 29 27 31 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 12.5 10.0 17.0 29.0 31.0 36.0 36.0 32.5 29.5 29.5 22.5 14.5 36.0 DAY 6 13 25 21 28 10 31 23 5 17 28 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 23.0 5.0 8.0 7.0 11.0 3.0 0.0 6.5 7.0 19.0 7.0 9.0 23.0 DAY 29 6 16 18 21 13 ** 3 18 7 15 1 MONTHLY TOTAL PRECIPITATION IN MM. 50.0 27.0 44.5 14.0 77.0 6.0 0.0 12.5 11.0 56.0 30.0 66.0 394.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 30.8 24.6 6.0 38.6 NO. OF DAYS WITH PRECIPITATION. 5 8 10 4 13 3 0 3 2 5 7 13 73 NO. OF DAYS PRECIPITATION EQUAL 5 8 10 4 13 3 0 3 2 5 7 13 73 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 0 0 0 2 0 0 0 0 3 0 0 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 50 52 54 69 70 73 72 77 76 67 60 58 65 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 57 57 65 59 65 64 60 65 67 62 65 54 62 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 58 57 67 69 73 75 75 78 76 72 68 52 68 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 30 29 15 0 0 0 0 0 0 0 4 28 106 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 1 6 14 9 0 0 0 0 30 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 29 30 6 0 0 0 0 0 5 12 31 144 DATE OF START AND END FREEZING START = 21 OCT. END = 12 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 3.2 2.7 2.9 10.4 15.7 20.5 18.7 20.4 20.0 13.6 8.2 3.6 11.6 AVERAGE OF MINIMUM TEMPERATURE IN C. -4.3 -3.8 -4.2 2.6 7.2 11.1 9.9 11.0 10.8 5.6 0.8 -4.0 3.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.6 9.1 10.0 18.0 24.2 29.8 27.4 29.7 29.3 21.5 15.5 11.3 19.7 DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.9 12.9 14.2 15.4 17.0 18.7 17.5 18.7 18.5 15.9 14.7 15.3 16.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.91 3.01 2.85 5.34 7.45 10.20 9.50 9.93 9.85 6.64 4.60 2.90 6.27 MEAN OF MIXING RATIO AT 09 GMT. 4.62 4.53 4.53 8.30 12.13 15.77 13.24 15.05 14.16 9.86 6.63 4.54 9.45 MEAN OF MIXING RATIO AT 15 GMT. 3.87 4.06 3.89 6.98 10.02 12.57 11.20 12.46 12.14 8.27 5.65 4.07 7.93 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -11.0 -12.0 -14.0 -6.0 1.5 8.5 6.5 7.0 5.0 2.5 -5.0 -8.5 -14.0 DAY 18 24 10 2 3 1 25 30 22 31 30 5 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.0 16.0 21.0 27.5 34.0 36.0 32.5 34.5 35.0 30.0 21.0 18.5 36.0 DAY 21 5 30 29 31 19 1 4 29 18 19 19 24 HOUR MAXIMUM PRECIPITATION IN MM. 24.0 14.0 10.0 9.0 14.0 4.0 2.0 9.0 4.0 11.0 7.0 13.0 24.0 DAY 24 27 9 27 22 17 16 28 19 11 27 4 MONTHLY TOTAL PRECIPITATION IN MM. 52.5 47.0 37.0 13.0 15.0 10.0 2.0 30.0 7.0 14.0 26.0 57.0 310.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 44.0 12.2 12.6 31.2 NO. OF DAYS WITH PRECIPITATION. 8 9 9 2 2 3 1 6 2 2 5 10 59 NO. OF DAYS PRECIPITATION EQUAL 8 9 9 2 2 3 1 6 2 2 5 10 59 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 1 1 0 1 0 0 0 0 1 0 3 8 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 59 56 54 67 70 71 75 74 76 71 65 56 66 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 57 61 54 66 68 64 63 61 59 66 60 54 61 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 62 67 59 71 75 70 72 75 78 75 69 65 70 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 17 15 17 3 0 0 0 0 0 0 2 16 70 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 4 14 4 20 12 1 0 0 55 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. 26 21 23 7 0 0 0 0 0 0 9 30 116 DATE OF START AND END FREEZING START = 2 NOV. END = 17 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 2.3 3.0 0.6 8.1 13.4 15.6 20.2 20.4 18.7 14.7 6.0 2.4 10.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.4 -4.7 -6.3 0.4 5.6 7.8 10.7 10.9 9.1 6.4 -2.5 -6.3 2.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.1 10.7 7.4 15.8 21.1 23.4 29.6 29.9 28.3 23.0 14.6 11.1 18.8 DIFFERENCE BETWEEN AVERAGE MAXIMUM 15.5 15.4 13.7 15.4 15.5 15.6 18.9 19.0 19.1 16.6 17.1 17.4 16.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.47 2.74 2.26 4.41 6.53 7.95 9.99 9.87 8.77 6.96 3.10 2.33 5.62 MEAN OF MIXING RATIO AT 09 GMT. 4.22 4.71 3.84 6.72 10.49 11.98 16.45 16.70 13.94 10.62 6.48 4.71 9.24 MEAN OF MIXING RATIO AT 15 GMT. 3.57 3.85 3.07 5.31 8.48 10.11 13.42 13.61 11.03 8.88 4.91 3.31 7.46 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -11.0 -10.0 -12.0 -4.0 2.0 4.5 5.5 7.5 6.0 2.5 -8.0 -11.0 -12.0 DAY 22 17 17 1 1 22 18 10 30 18 26 16 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.0 20.0 14.0 22.0 28.5 28.5 41.0 36.0 33.0 32.0 24.0 19.0 41.0 DAY 6 25 5 16 27 25 9 1 6 5 8 27 24 HOUR MAXIMUM PRECIPITATION IN MM. 35.0 8.0 17.0 24.0 18.0 6.5 0.0 20.0 23.0 7.0 7.0 11.0 35.0 DAY 21 11 8 20 4 12 ** 5 30 12 11 31 MONTHLY TOTAL PRECIPITATION IN MM. 69.0 26.0 44.0 47.5 23.0 16.5 0.0 41.0 42.0 18.0 25.5 41.0 393.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 35.3 22.1 21.1 21.5 NO. OF DAYS WITH PRECIPITATION. 4 6 8 4 3 3 0 5 3 4 6 7 53 NO. OF DAYS PRECIPITATION EQUAL 4 6 8 4 3 3 0 5 3 4 6 7 53 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 0 1 2 1 0 0 2 2 0 0 1 12 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 51 52 55 63 68 71 70 70 71 71 50 49 62 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 55 58 60 62 68 71 65 65 63 66 64 59 63 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 61 62 62 63 70 75 71 69 71 75 63 54 66 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 24 18 27 2 0 0 0 0 0 0 18 25 114 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 0 0 17 17 11 3 0 0 48 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 1 0 0 0 0 0 1 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. 28 24 31 12 0 0 0 0 0 0 20 30 145 DATE OF START AND END FREEZING START = 11 NOV. END = 21 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 4.5 1.2 2.9 8.8 15.6 19.9 21.8 20.3 16.5 8.9 6.0 4.1 10.9 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.0 -7.2 -6.3 -1.0 5.2 10.3 11.2 10.0 7.6 0.1 -3.5 -5.2 1.4 AVERAGE OF MAXIMUM TEMPERATURE IN C. 14.0 9.5 12.1 18.6 26.0 29.5 32.3 30.6 25.5 17.8 15.4 13.4 20.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 19.0 16.7 18.4 19.6 20.8 19.2 21.1 20.6 17.9 17.7 18.9 18.6 19.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.42 2.17 2.02 3.88 6.41 9.73 10.11 9.20 7.80 4.18 3.01 2.35 5.27 MEAN OF MIXING RATIO AT 09 GMT. 5.33 4.05 4.66 8.01 12.07 17.05 20.03 16.68 12.88 7.90 6.26 5.24 10.01 MEAN OF MIXING RATIO AT 15 GMT. 3.88 3.31 3.33 5.96 9.01 12.93 14.22 12.73 9.98 5.88 4.89 3.86 7.50 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -10.0 -11.0 -11.5 -9.5 2.0 5.5 8.0 7.0 5.0 -6.5 -10.5 -9.5 -11.5 DAY 1 28 2 1 3 4 26 31 19 28 30 17 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 20.0 15.0 20.5 28.0 32.0 36.0 37.5 38.0 30.5 26.5 24.0 20.5 38.0 DAY 30 24 3 13 27 25 15 14 9 2 6 21 24 HOUR MAXIMUM PRECIPITATION IN MM. 4.0 6.5 7.0 14.0 9.0 0.0 6.0 14.0 9.0 29.0 5.0 16.0 29.0 DAY 7 11 2 5 31 ** 25 6 12 9 8 31 MONTHLY TOTAL PRECIPITATION IN MM. 13.5 26.5 49.5 50.0 28.0 0.0 19.5 15.5 10.0 98.5 8.0 40.0 359.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 24.9 21.7 12.5 40.8 NO. OF DAYS WITH PRECIPITATION. 4 9 12 8 6 0 6 2 2 11 2 6 68 NO. OF DAYS PRECIPITATION EQUAL 4 9 12 8 6 0 6 2 2 11 2 6 68 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 2 0 0 0 1 0 3 0 1 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 48 50 42 54 68 72 70 67 70 58 52 47 58 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 56 57 56 60 64 68 68 63 67 64 59 58 62 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 58 60 53 60 70 71 66 66 68 63 58 57 63 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 22 24 25 11 0 0 0 0 0 5 17 21 125 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 5 14 23 17 3 0 0 0 62 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 28 31 12 0 0 0 0 0 13 24 29 167 DATE OF START AND END FREEZING START = 11 OCT. END = 27 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 1.7 2.4 5.3 8.3 12.6 19.7 19.7 15.9 16.7 11.4 7.6 ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -7.1 -6.2 -3.7 -1.8 2.7 9.8 10.3 6.7 7.5 2.5 -2.7 ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.4 11.0 14.3 18.5 22.5 29.6 29.2 25.0 25.9 20.4 17.8 ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 17.5 17.2 18.0 20.3 19.8 19.9 18.9 18.3 18.4 17.9 20.5 ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 1.99 2.44 2.89 3.75 5.20 9.17 9.77 7.27 7.75 5.14 3.42 ***** ***** MEAN OF MIXING RATIO AT 09 GMT. 4.45 4.45 5.31 7.62 11.10 15.78 16.59 12.36 12.90 9.67 7.16 ***** ***** MEAN OF MIXING RATIO AT 15 GMT. 3.63 3.84 4.37 6.02 8.42 12.27 12.76 10.02 10.38 8.53 5.76 ***** ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -10.0 -11.5 -8.0 -8.5 -5.0 4.0 6.5 4.0 4.5 -1.5 -8.5 ***** ****** DAY 19 6 1 2 1 1 11 27 27 23 22 ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.0 21.0 24.0 29.0 30.5 39.0 35.0 32.5 36.0 27.0 26.0 ***** ****** DAY 26 29 20 21 28 14 14 28 9 20 8 ** 24 HOUR MAXIMUM PRECIPITATION IN MM. 28.0 6.0 7.0 38.0 15.0 4.0 11.0 16.0 0.0 9.0 13.0 ***** ****** DAY 19 17 24 26 3 1 11 24 ** 22 14 ** MONTHLY TOTAL PRECIPITATION IN MM. 129.5 19.0 30.5 56.0 35.0 7.0 63.0 43.0 0.0 9.0 30.0 ***** ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 42.4 23.2 25.1 9.2 NO. OF DAYS WITH PRECIPITATION. 9 4 8 7 5 2 9 7 0 1 5 *** *** NO. OF DAYS PRECIPITATION EQUAL 9 4 8 7 5 2 9 7 0 1 5 *** *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 5 0 0 1 2 0 3 1 0 0 1 *** *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 48 53 53 55 62 68 71 73 70 68 58 *** *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 58 58 57 60 67 63 69 70 69 68 60 *** *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 59 63 64 62 67 66 69 72 71 77 63 *** *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 30 21 20 8 1 0 0 0 0 0 14 *** *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 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 *** *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 2 14 15 4 6 0 0 *** *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 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 *** *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 31 28 25 19 3 0 0 0 0 3 22 *** *** DATE OF START AND END FREEZING START = 16 OCT. END = 4 MAY IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. -0.3 1.3 3.9 7.4 11.8 14.9 18.9 19.0 18.9 15.1 8.8 4.5 10.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -8.8 -8.1 -6.5 -2.2 2.0 4.9 7.4 7.5 8.0 4.2 -1.4 -6.1 0.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.3 10.7 14.2 17.0 21.7 24.8 30.4 30.4 29.9 25.9 19.1 15.2 20.6 DIFFERENCE BETWEEN AVERAGE MAXIMUM 17.1 18.8 20.7 19.2 19.7 19.9 23.0 22.9 21.9 21.7 20.5 21.3 20.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 1.69 2.19 2.19 3.85 4.94 6.07 7.66 7.62 8.03 6.00 3.81 1.81 4.66 MEAN OF MIXING RATIO AT 09 GMT. 3.56 4.05 5.02 6.68 9.98 11.80 14.77 13.41 13.55 12.31 8.36 6.19 9.14 MEAN OF MIXING RATIO AT 15 GMT. 2.49 3.38 4.77 5.74 7.92 8.35 11.38 10.43 11.79 9.14 6.79 4.10 7.19 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -14.0 -11.0 -10.0 -7.0 -2.5 0.5 5.0 5.0 5.0 1.5 -5.0 -9.0 -14.0 DAY 15 11 13 2 3 1 18 3 19 22 21 17 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.0 16.0 18.0 20.5 25.0 30.5 35.0 36.0 38.0 36.5 22.5 18.5 38.0 DAY 25 27 25 28 24 22 12 28 1 7 2 7 24 HOUR MAXIMUM PRECIPITATION IN MM. 18.5 11.0 14.0 10.0 8.0 8.0 16.0 14.0 8.0 4.0 7.0 11.0 18.5 DAY 2 13 22 30 20 7 16 15 21 23 1 6 MONTHLY TOTAL PRECIPITATION IN MM. 81.0 44.0 61.0 17.0 14.0 15.0 16.0 43.0 18.0 13.5 15.0 34.0 371.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 50.1 12.4 20.7 16.8 NO. OF DAYS WITH PRECIPITATION. 10 7 8 3 2 3 1 5 3 4 3 5 54 NO. OF DAYS PRECIPITATION EQUAL 10 7 8 3 2 3 1 5 3 4 3 5 54 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 1 2 1 0 0 1 3 0 0 0 1 12 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 46 54 46 62 65 66 69 71 74 68 61 40 60 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 57 57 54 58 65 65 58 56 58 64 64 61 60 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 51 61 67 70 70 66 74 73 78 70 68 53 67 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 31 28 29 10 0 0 0 0 0 0 3 29 130 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 0 1 21 19 15 3 0 0 59 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 28 31 22 3 0 0 0 0 0 22 31 168 DATE OF START AND END FREEZING START = 6 NOV. END = 30 MAY IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 0.9 1.3 4.6 6.9 11.2 16.9 16.9 14.4 17.5 14.1 10.0 6.1 10.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -9.1 -8.6 -5.5 -2.9 1.4 4.4 5.2 4.4 5.4 4.1 -0.4 -5.1 -0.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.9 11.3 14.7 16.8 20.9 29.4 28.6 24.4 29.7 24.0 20.4 17.2 20.7 DIFFERENCE BETWEEN AVERAGE MAXIMUM 20.0 19.9 20.2 19.7 19.5 25.0 23.4 20.0 24.3 19.9 20.8 22.3 21.2 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 1.33 1.45 2.60 3.23 4.70 6.06 6.52 6.04 6.42 5.77 4.08 2.63 4.24 MEAN OF MIXING RATIO AT 09 GMT. 4.49 4.52 5.82 6.82 8.88 15.62 15.72 11.12 11.04 8.64 8.06 6.46 8.93 MEAN OF MIXING RATIO AT 15 GMT. 3.00 3.66 4.81 5.22 6.27 9.87 9.23 8.41 9.93 8.04 6.69 4.92 6.67 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -12.5 -12.5 -11.5 -7.5 -2.0 1.5 2.0 1.5 4.0 1.5 -5.0 -10.0 -12.5 DAY 27 3 17 7 5 8 6 25 1 27 21 25 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.0 15.0 18.5 20.0 26.0 35.5 35.5 30.5 38.0 28.0 25.5 27.0 38.0 DAY 18 13 8 29 29 18 19 3 14 23 3 4 24 HOUR MAXIMUM PRECIPITATION IN MM. 13.0 8.0 23.0 5.0 12.0 9.0 16.0 8.0 7.0 0.0 15.0 23.0 23.0 DAY 24 16 17 1 13 14 9 29 19 ** 13 25 MONTHLY TOTAL PRECIPITATION IN MM. 84.0 33.0 90.0 9.0 12.0 9.0 66.5 15.0 7.0 0.0 20.0 78.0 423.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 48.9 7.1 20.9 23.1 NO. OF DAYS WITH PRECIPITATION. 10 9 8 2 1 1 6 2 1 0 2 8 50 NO. OF DAYS PRECIPITATION EQUAL 10 9 8 2 1 1 6 2 1 0 2 8 50 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 5 0 4 0 1 0 4 0 0 0 1 3 18 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 34 35 52 55 65 70 73 71 69 69 60 50 59 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 57 57 57 61 61 64 65 63 50 52 60 55 59 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 51 61 66 66 66 67 64 69 72 74 67 57 65 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 31 28 18 11 0 0 0 0 0 0 2 22 112 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 0 11 10 1 15 0 0 0 37 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 28 31 25 3 0 0 0 0 0 16 26 160 DATE OF START AND END FREEZING START = 4 NOV. END = 8 MAY IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 1.8 1.0 4.9 9.5 12.9 16.5 18.2 16.8 15.6 9.8 5.4 2.3 9.5 AVERAGE OF MINIMUM TEMPERATURE IN C. -7.8 -7.5 -5.8 -1.4 1.5 5.1 6.9 5.2 4.0 -1.8 -6.1 -8.0 -1.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.5 9.4 15.5 20.5 24.2 27.9 29.4 28.4 27.3 21.3 17.0 12.6 20.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 19.3 16.9 21.3 21.9 22.7 22.8 22.5 23.2 23.3 23.1 23.1 20.6 21.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.03 1.97 2.37 3.83 4.61 6.24 7.42 6.36 5.63 3.36 2.09 1.83 3.98 MEAN OF MIXING RATIO AT 09 GMT. 4.91 4.69 6.53 8.62 10.66 13.45 16.49 14.99 11.35 8.53 6.31 4.57 9.26 MEAN OF MIXING RATIO AT 15 GMT. 3.73 3.53 5.37 7.09 7.84 9.57 11.52 10.09 9.09 6.63 4.89 4.30 6.97 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -11.5 -11.5 -10.0 -5.5 -2.0 2.0 3.0 3.0 0.5 -7.0 -10.0 -11.5 -11.5 DAY 25 23 7 4 1 16 28 2 18 20 21 26 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.5 14.5 18.5 26.5 28.0 32.5 34.5 34.0 34.5 27.0 27.5 18.0 34.5 DAY 13 19 17 23 30 12 7 2 21 3 1 9 24 HOUR MAXIMUM PRECIPITATION IN MM. 16.0 19.5 12.0 10.0 12.0 0.0 0.0 0.0 8.0 9.0 6.0 10.0 19.5 DAY 5 12 23 12 5 ** ** ** 26 12 22 26 MONTHLY TOTAL PRECIPITATION IN MM. 54.0 118.5 95.0 53.0 67.0 0.0 0.0 0.0 25.0 36.0 38.0 49.0 535.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 50.0 22.4 4.7 23.0 NO. OF DAYS WITH PRECIPITATION. 10 12 13 8 11 0 0 0 6 6 10 10 86 NO. OF DAYS PRECIPITATION EQUAL 10 12 13 8 11 0 0 0 6 6 10 10 86 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 7 5 2 1 0 0 0 0 0 0 1 17 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 52 48 51 57 59 63 69 71 66 51 44 44 56 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 58 64 62 62 62 61 68 66 57 60 55 50 60 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 57 60 70 71 69 70 71 68 72 65 58 67 67 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 31 26 26 8 0 0 0 0 0 11 27 29 158 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 0 9 15 12 5 0 0 0 41 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 28 31 18 6 0 0 0 0 21 30 30 195 DATE OF START AND END FREEZING START = 7 OCT. END = 26 MAY IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 0.4 0.8 2.4 8.2 11.3 16.0 18.4 17.4 14.4 14.3 11.1 5.9 10.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -9.9 -9.4 -7.3 -0.7 1.3 5.9 7.9 6.5 4.8 4.4 1.8 -3.7 0.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.7 11.0 12.0 17.1 21.3 26.0 29.0 28.4 24.1 24.1 20.3 15.5 20.0 DIFFERENCE BETWEEN AVERAGE MAXIMUM 20.6 20.4 19.3 17.8 20.0 20.1 21.1 21.9 19.3 19.7 18.5 19.2 19.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 1.53 1.49 2.08 4.14 4.20 7.02 8.05 7.25 6.37 6.09 5.12 2.99 4.69 MEAN OF MIXING RATIO AT 09 GMT. 4.37 4.36 5.14 7.32 8.81 14.22 16.26 13.97 9.82 8.25 6.88 6.43 8.82 MEAN OF MIXING RATIO AT 15 GMT. 3.66 3.79 3.31 4.29 5.37 8.45 9.55 8.68 8.11 7.17 5.91 4.33 6.05 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -12.5 -12.5 -13.0 -4.0 -4.0 2.0 4.3 4.0 2.0 1.0 -8.0 -7.5 -13.0 DAY 18 16 12 3 2 3 24 4 29 7 27 4 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.5 15.0 16.5 24.0 26.0 30.0 34.0 32.0 30.0 36.0 28.0 21.0 36.0 DAY 16 21 22 27 28 17 24 13 1 10 22 16 24 HOUR MAXIMUM PRECIPITATION IN MM. 14.0 19.0 66.5 17.0 9.0 8.0 4.0 5.0 5.0 13.0 12.0 10.0 66.5 DAY 25 11 25 26 12 14 7 8 14 8 26 28 MONTHLY TOTAL PRECIPITATION IN MM. 66.0 129.0 112.0 99.0 45.0 34.0 6.0 17.5 17.0 19.0 20.0 23.0 587.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 52.3 30.3 6.9 10.6 NO. OF DAYS WITH PRECIPITATION. 8 11 14 12 12 7 2 7 6 3 3 4 89 NO. OF DAYS PRECIPITATION EQUAL 8 11 14 12 12 7 2 7 6 3 3 4 89 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 7 1 4 0 0 0 0 0 1 1 1 17 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 44 42 49 66 61 75 76 75 70 72 69 57 63 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 54 53 57 60 60 66 63 55 57 50 50 58 57 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 67 70 58 66 64 73 77 76 74 72 72 68 70 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 31 29 24 1 1 0 0 0 0 0 4 21 111 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 0 2 11 9 1 5 0 0 28 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 29 31 17 5 0 0 0 0 0 4 28 145 DATE OF START AND END FREEZING START = 27 NOV. END = 12 MAY IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 3.6 2.7 3.3 7.2 11.8 19.2 20.6 22.1 18.6 13.3 5.7 5.7 11.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -6.1 -7.7 -5.1 -1.2 3.4 10.3 10.0 13.2 10.4 4.9 0.0 -0.9 2.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 13.3 13.1 11.7 15.6 20.2 27.9 31.1 31.0 26.8 21.7 11.2 12.2 19.7 DIFFERENCE BETWEEN AVERAGE MAXIMUM 19.4 20.8 16.8 16.8 16.8 17.6 21.1 17.8 16.4 16.8 11.2 13.1 17.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.51 2.03 2.67 3.86 6.48 9.89 9.66 12.23 9.88 6.32 4.65 4.01 6.18 MEAN OF MIXING RATIO AT 09 GMT. 5.74 5.34 5.04 5.21 9.16 14.49 16.50 16.30 13.56 8.75 5.83 5.15 9.25 MEAN OF MIXING RATIO AT 15 GMT. 3.29 3.02 3.38 4.77 7.73 11.64 12.06 14.44 12.42 8.19 5.57 4.90 7.62 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -11.0 -14.0 -11.0 -4.0 -2.5 6.0 5.5 10.5 7.0 1.0 -6.5 -8.5 -14.0 DAY 19 17 13 23 2 6 2 5 25 8 30 6 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.0 17.0 16.0 21.0 27.5 36.0 37.0 35.5 39.5 32.5 18.5 18.5 39.5 DAY 29 27 6 11 31 27 30 12 3 1 9 13 24 HOUR MAXIMUM PRECIPITATION IN MM. 42.0 26.0 20.0 8.0 5.0 6.0 2.5 4.5 7.9 5.0 12.0 3.4 42.0 DAY 15 16 23 13 8 22 9 23 8 6 29 16 MONTHLY TOTAL PRECIPITATION IN MM. 58.0 107.0 54.0 47.0 18.0 13.0 4.5 26.5 20.7 20.1 64.8 9.6 443.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 49.4 17.6 11.7 21.3 NO. OF DAYS WITH PRECIPITATION. 4 11 11 9 5 3 2 9 6 6 12 3 81 NO. OF DAYS PRECIPITATION EQUAL 4 11 11 9 5 3 2 9 6 6 12 3 81 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 6 1 0 0 0 0 0 0 0 2 0 10 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 60 50 56 63 81 78 78 80 77 71 75 69 70 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 60 58 59 49 65 64 66 65 65 58 65 58 61 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 59 55 61 69 85 78 79 81 81 74 77 71 73 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 25 25 20 2 0 0 0 0 0 0 3 8 83 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 0 11 21 21 4 1 0 0 58 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. 28 28 31 22 4 0 0 0 0 0 15 15 143 DATE OF START AND END FREEZING START = 12 NOV. END = 8 MAY IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 4.3 2.0 6.3 ***** 16.6 18.2 19.9 20.1 18.0 15.7 12.7 5.0 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -2.1 -4.1 -1.1 ***** 7.7 9.5 11.3 12.2 9.8 8.0 4.6 -1.3 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.7 8.1 13.8 ***** 25.6 26.8 28.5 28.0 26.3 23.4 20.8 11.2 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.8 12.2 14.9 ***** 17.9 17.3 17.2 15.8 16.6 15.4 16.2 12.5 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.53 2.98 3.61 ***** 7.54 8.92 10.13 10.93 9.04 7.78 6.05 4.04 ***** MEAN OF MIXING RATIO AT 09 GMT. 4.45 4.14 4.57 ***** 10.33 12.10 13.26 13.72 12.27 11.20 8.86 4.83 ***** MEAN OF MIXING RATIO AT 15 GMT. 4.26 3.69 4.51 ***** 9.52 11.27 12.32 13.34 10.99 10.09 7.91 4.62 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -7.5 -9.5 -6.5 ***** 5.0 5.5 9.0 9.5 7.5 3.5 1.0 -7.5 ****** DAY 20 18 1 ** 8 6 2 12 18 25 26 22 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 24.5 15.5 24.5 ***** 33.5 34.0 36.5 34.0 31.5 33.0 31.5 22.5 ****** DAY 4 1 29 ** 28 15 24 16 12 19 4 3 24 HOUR MAXIMUM PRECIPITATION IN MM. 7.4 5.4 13.0 ***** 5.4 7.8 0.0 3.4 4.6 17.4 12.4 8.0 ****** DAY 6 4 27 ** 6 27 ** 20 4 23 26 6 MONTHLY TOTAL PRECIPITATION IN MM. 11.4 40.2 54.6 ***** 13.8 30.8 0.0 6.8 28.2 50.0 30.2 24.0 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 36.6 15.4 12.1 35.9 NO. OF DAYS WITH PRECIPITATION. 2 10 11 *** 4 7 0 3 9 10 4 5 *** NO. OF DAYS PRECIPITATION EQUAL 2 10 11 *** 4 7 0 3 9 10 4 5 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 1 *** 0 0 0 0 0 1 1 0 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 65 64 62 *** 71 77 78 80 77 73 69 67 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 54 58 47 *** 55 60 61 63 62 66 62 57 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 66 67 64 *** 72 79 78 81 75 77 73 68 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 11 15 6 *** 0 0 0 0 0 0 0 5 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 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 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 *** 8 8 10 10 5 2 1 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 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 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 23 26 17 *** 0 0 0 0 0 0 0 21 *** DATE OF START AND END FREEZING START = 5 DEC. END = 27 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 4.5 4.0 6.5 9.1 15.0 17.8 18.8 20.6 18.4 12.2 12.0 6.4 12.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -2.4 -2.5 -0.7 1.1 5.5 7.7 8.9 10.6 8.9 3.8 3.6 0.0 3.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.3 10.4 13.6 17.0 24.5 27.8 28.7 30.6 27.9 20.5 20.5 12.7 20.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.7 12.9 14.3 15.9 19.0 20.1 19.8 20.0 19.0 16.7 16.9 12.7 16.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.59 3.69 4.09 4.46 6.71 7.99 8.58 9.99 8.88 5.78 5.52 4.42 6.14 MEAN OF MIXING RATIO AT 09 GMT. 4.42 4.98 5.06 5.85 9.34 11.50 11.99 13.56 12.43 8.42 7.63 5.19 8.36 MEAN OF MIXING RATIO AT 15 GMT. 4.20 4.48 4.77 5.30 7.97 9.61 10.37 11.75 10.82 7.46 7.09 5.18 7.42 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -7.5 -8.5 -6.5 -1.5 2.5 3.0 5.5 8.5 3.5 1.0 -1.5 -3.5 -8.5 DAY 10 24 15 5 13 23 5 3 22 16 27 13 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.5 17.5 18.5 25.5 29.5 36.5 35.0 36.0 36.5 27.0 26.0 17.5 36.5 DAY 4 8 8 11 24 29 30 12 12 3 9 28 24 HOUR MAXIMUM PRECIPITATION IN MM. 3.2 10.0 6.4 14.0 4.0 5.0 3.4 1.0 4.0 3.0 10.0 3.0 14.0 DAY 18 24 18 24 14 23 5 20 15 13 26 7 MONTHLY TOTAL PRECIPITATION IN MM. 6.2 22.0 21.8 35.8 9.0 12.0 6.4 1.0 9.0 3.0 17.0 8.0 151.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 33.1 37.6 10.8 18.5 NO. OF DAYS WITH PRECIPITATION. 2 5 6 5 3 3 3 1 3 1 3 3 38 NO. OF DAYS PRECIPITATION EQUAL 2 5 6 5 3 3 3 1 3 1 3 3 38 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 0 2 0 0 0 0 0 0 1 0 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 65 69 68 66 68 71 72 75 77 72 69 77 71 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 53 62 52 50 52 54 53 54 57 59 52 56 55 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 64 71 67 66 66 71 72 73 76 75 72 73 71 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 7 8 2 0 0 0 0 0 0 0 0 0 17 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 0 9 13 18 9 0 0 0 49 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. 26 23 19 7 0 0 0 0 0 0 1 13 89 DATE OF START AND END FREEZING START = 27 NOV. END = 26 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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. 3.3 2.6 4.3 10.1 13.5 15.2 19.4 17.7 18.1 14.8 8.9 9.1 11.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -2.5 -3.2 -1.9 1.8 4.1 5.5 7.5 8.2 8.7 6.9 2.5 2.1 3.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 9.1 8.3 10.4 18.3 22.8 24.8 31.3 27.3 27.6 22.7 15.4 16.0 19.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.6 11.5 12.3 16.5 18.7 19.3 23.8 19.1 18.9 15.8 12.9 13.9 16.2 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.51 3.26 3.66 4.73 5.73 6.44 7.48 7.99 8.31 7.30 5.20 4.73 5.69 MEAN OF MIXING RATIO AT 09 GMT. 4.42 4.36 4.39 6.05 7.78 9.13 10.81 10.66 12.34 9.69 6.33 5.77 7.64 MEAN OF MIXING RATIO AT 15 GMT. 4.18 4.06 4.43 6.02 6.85 7.83 9.39 9.45 10.17 8.68 6.08 5.94 6.92 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -8.5 -8.5 -9.5 -3.0 1.5 3.5 4.5 5.5 5.5 3.5 -7.5 1.0 -9.5 DAY 14 6 19 4 2 5 1 18 13 20 13 2 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.5 15.0 21.0 26.0 29.5 31.5 36.0 34.5 36.0 33.5 22.0 24.5 36.0 DAY 1 24 25 30 17 29 18 1 29 25 1 29 24 HOUR MAXIMUM PRECIPITATION IN MM. 6.0 9.0 21.0 11.0 5.4 14.4 2.0 4.0 2.0 8.2 21.0 3.0 21.0 DAY 14 29 12 4 9 27 2 13 20 16 11 15 MONTHLY TOTAL PRECIPITATION IN MM. 18.0 22.0 45.0 29.6 21.8 35.6 3.0 5.0 2.0 24.6 41.0 3.0 250.6 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 33.9 34.7 4.0 27.4 NO. OF DAYS WITH PRECIPITATION. 4 5 7 5 6 7 2 2 1 6 3 1 49 NO. OF DAYS PRECIPITATION EQUAL 4 5 7 5 6 7 2 2 1 6 3 1 49 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 1 1 0 1 0 0 0 0 2 0 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 68 65 68 67 69 71 71 75 74 76 76 74 71 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 60 61 54 48 49 50 42 50 56 58 56 50 53 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 71 70 71 70 68 72 67 69 71 78 74 74 71 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 9 10 6 0 0 0 0 0 0 0 1 0 26 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 0 2 20 7 9 3 0 0 41 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. 23 26 21 6 0 0 0 0 0 0 2 0 78 DATE OF START AND END FREEZING START = 13 NOV. END = 15 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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. 6.5 4.5 5.1 12.7 16.3 19.2 20.6 22.0 19.9 15.5 11.1 7.0 13.4 AVERAGE OF MINIMUM TEMPERATURE IN C. 0.5 -1.6 -0.8 3.5 6.3 9.3 11.2 12.2 10.8 6.8 3.3 1.3 5.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 12.5 10.6 11.0 21.9 26.4 29.1 30.1 31.7 29.1 24.2 18.8 12.9 21.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.0 12.2 11.8 18.4 20.1 19.8 18.9 19.5 18.3 17.4 15.5 11.6 16.3 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.44 3.81 4.09 5.45 6.85 8.58 10.01 10.72 9.70 7.37 5.52 4.61 6.76 MEAN OF MIXING RATIO AT 09 GMT. 5.13 4.52 4.78 6.71 9.35 11.70 13.27 16.09 14.13 11.10 7.85 5.46 9.17 MEAN OF MIXING RATIO AT 15 GMT. 5.18 4.55 4.62 6.39 7.89 9.78 11.35 12.52 11.23 8.69 6.41 5.14 7.81 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -7.5 -7.5 -7.5 -6.5 2.5 6.5 8.0 10.5 8.5 3.0 1.0 -5.6 -7.5 DAY 29 1 10 12 6 1 6 11 14 30 13 19 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 22.5 17.0 20.0 36.0 34.5 40.0 34.5 37.5 36.0 32.0 26.0 19.5 40.0 DAY 6 17 24 27 28 13 11 13 2 2 4 7 24 HOUR MAXIMUM PRECIPITATION IN MM. 23.0 19.0 35.0 9.0 12.4 12.4 5.2 3.4 7.4 12.6 19.6 13.4 35.0 DAY 28 1 9 12 5 23 6 22 14 31 13 11 MONTHLY TOTAL PRECIPITATION IN MM. 29.0 37.0 109.8 9.0 21.8 31.2 17.0 5.4 13.0 17.8 71.2 37.6 399.8 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 44.0 15.5 8.9 31.7 NO. OF DAYS WITH PRECIPITATION. 3 6 9 1 3 6 6 2 3 2 8 5 54 NO. OF DAYS PRECIPITATION EQUAL 3 6 9 1 3 6 6 2 3 2 8 5 54 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 1 4 0 1 1 0 0 0 1 4 2 15 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 78 73 76 70 71 75 79 77 78 74 76 77 75 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 54 55 58 43 46 51 53 58 59 61 59 59 55 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 75 73 75 68 69 72 75 76 74 73 71 73 73 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 3 5 5 1 0 0 0 0 0 0 0 1 15 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 4 7 12 18 24 9 1 0 0 75 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 0 0 0 0 0 0 1 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. 6 17 16 2 0 0 0 0 0 0 0 6 47 DATE OF START AND END FREEZING START = 18 DEC. END = 12 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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. 3.7 4.4 8.6 13.6 16.3 20.2 21.3 22.4 19.3 15.8 13.8 9.5 14.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.2 -1.0 1.6 5.4 8.8 11.3 13.0 14.2 11.9 9.2 7.4 3.9 7.0 AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.5 9.8 15.6 21.7 23.8 29.1 29.5 30.7 26.7 22.4 20.3 15.1 21.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.7 10.8 14.0 16.3 15.0 17.8 16.5 16.5 14.8 13.2 12.9 11.2 14.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.99 4.02 4.56 6.16 7.92 9.49 10.76 11.36 9.79 8.12 6.85 5.16 7.35 MEAN OF MIXING RATIO AT 09 GMT. 4.47 4.50 6.21 8.53 10.04 13.04 15.23 17.55 14.73 11.05 8.11 6.42 9.99 MEAN OF MIXING RATIO AT 15 GMT. 4.26 4.32 5.06 6.77 9.06 10.93 12.30 12.91 11.11 9.10 7.70 5.81 8.28 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -7.4 -7.4 -5.6 -3.0 2.8 9.6 10.2 11.8 9.6 3.8 3.4 1.0 -7.4 DAY 14 16 3 6 3 1 3 18 28 11 13 3 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.5 18.0 24.0 33.5 32.0 33.5 34.5 38.0 35.0 30.0 27.0 28.5 38.0 DAY 4 7 29 15 28 8 10 26 1 1 6 10 24 HOUR MAXIMUM PRECIPITATION IN MM. 54.2 12.5 14.0 23.0 9.6 5.4 17.4 12.6 6.2 6.4 0.0 5.4 54.2 DAY 13 12 18 6 31 29 24 2 14 9 ** 4 MONTHLY TOTAL PRECIPITATION IN MM. 113.6 46.4 28.0 58.4 49.4 17.2 41.8 45.4 33.6 16.8 0.0 13.0 463.6 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 40.6 27.0 26.1 6.4 NO. OF DAYS WITH PRECIPITATION. 9 6 6 8 10 5 7 8 9 4 0 3 75 NO. OF DAYS PRECIPITATION EQUAL 9 6 6 8 10 5 7 8 9 4 0 3 75 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 3 1 2 0 0 1 1 0 0 0 0 11 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 80 75 71 71 76 77 80 78 78 78 74 73 76 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 62 59 55 53 56 55 60 64 66 64 54 58 59 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 77 74 70 69 76 74 76 76 77 76 73 71 74 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 4 5 2 0 0 0 0 0 0 0 0 0 11 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 5 3 13 15 18 6 1 0 0 61 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. 18 15 5 1 0 0 0 0 0 0 0 0 39 DATE OF START AND END FREEZING START = 3 JAN. END = 6 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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. 5.6 8.3 8.0 9.6 14.0 17.8 18.4 20.8 17.9 14.6 8.5 7.4 12.6 AVERAGE OF MINIMUM TEMPERATURE IN C. 1.1 2.2 2.2 2.9 5.7 9.9 9.6 10.7 10.3 7.4 2.9 1.9 5.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.2 14.3 13.8 16.4 22.3 25.7 27.1 30.9 25.6 21.7 14.1 12.9 19.6 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.1 12.1 11.6 13.5 16.6 15.8 17.5 20.2 15.3 14.3 11.2 11.0 14.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.48 4.55 4.46 4.59 5.79 7.96 7.71 8.15 8.72 6.84 4.84 4.45 6.04 MEAN OF MIXING RATIO AT 09 GMT. 4.70 5.14 5.21 6.06 8.33 10.85 11.37 12.57 12.45 9.63 5.84 4.98 8.10 MEAN OF MIXING RATIO AT 15 GMT. 4.77 4.82 4.97 5.21 6.84 9.48 8.93 10.60 10.22 7.97 5.25 4.73 6.98 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -4.2 -2.4 -1.4 1.0 1.6 6.4 7.0 7.6 7.4 3.4 1.0 -1.8 -4.2 DAY 19 4 3 9 11 5 9 9 28 26 29 18 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.5 20.0 21.5 25.0 31.0 32.0 33.0 36.5 30.0 32.0 21.0 20.0 36.5 DAY 10 3 10 2 30 20 30 24 2 12 16 7 24 HOUR MAXIMUM PRECIPITATION IN MM. 6.0 5.2 9.2 15.6 6.2 6.2 21.4 3.2 14.2 12.4 18.4 10.6 21.4 DAY 18 20 17 22 11 17 15 14 27 26 1 16 MONTHLY TOTAL PRECIPITATION IN MM. 19.0 12.6 38.2 77.8 24.8 9.2 78.8 6.2 45.2 30.2 67.8 26.4 436.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 16.0 25.6 29.8 28.5 NO. OF DAYS WITH PRECIPITATION. 5 3 8 12 5 2 8 2 6 5 10 4 70 NO. OF DAYS PRECIPITATION EQUAL 5 3 8 12 5 2 8 2 6 5 10 4 70 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 2 0 0 3 0 2 1 2 1 11 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 79 72 72 68 67 69 67 64 75 72 73 73 71 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 58 51 52 52 50 53 51 45 59 58 55 52 53 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 76 68 71 66 64 68 67 62 70 70 70 69 68 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 1 0 0 0 0 0 0 0 0 0 0 0 1 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 2 2 6 19 3 3 0 0 35 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. 8 2 2 0 0 0 0 0 0 0 0 1 13 DATE OF START AND END FREEZING START = 18 DEC. END = 18 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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. 4.5 5.5 7.4 16.3 17.0 19.8 23.2 23.9 21.2 14.0 8.7 7.8 14.1 AVERAGE OF MINIMUM TEMPERATURE IN C. 0.3 0.3 1.8 7.8 10.5 13.6 16.2 17.2 16.0 8.8 4.2 3.2 8.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.8 10.6 13.0 24.8 23.5 26.1 30.3 30.6 26.4 19.2 13.2 12.4 19.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.5 10.3 11.2 16.9 13.0 12.5 14.1 13.4 10.4 10.4 9.0 9.2 11.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.22 4.24 4.39 5.53 7.75 9.88 11.08 12.21 11.91 7.93 5.56 4.64 7.45 MEAN OF MIXING RATIO AT 09 GMT. 4.21 4.18 4.56 7.52 9.47 11.40 13.79 15.33 13.28 9.05 5.82 5.08 8.64 MEAN OF MIXING RATIO AT 15 GMT. 4.59 4.35 4.81 6.70 9.18 10.89 14.72 16.84 14.36 9.34 6.49 5.36 8.97 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.6 -6.8 -3.6 4.0 7.2 6.4 11.4 13.6 11.4 6.0 1.0 1.0 -6.8 DAY 29 8 3 1 5 13 10 12 26 16 11 26 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 18.0 18.5 21.0 30.0 30.0 35.5 36.0 38.0 36.0 29.0 24.0 23.5 38.0 DAY 2 23 23 22 27 5 31 3 8 26 12 31 24 HOUR MAXIMUM PRECIPITATION IN MM. 20.0 11.2 6.8 4.2 7.0 15.0 8.4 5.2 9.4 13.2 10.4 18.6 20.0 DAY 28 8 9 16 15 13 7 5 20 15 7 11 MONTHLY TOTAL PRECIPITATION IN MM. 83.4 39.2 28.4 4.2 18.0 25.6 26.8 11.4 38.0 55.8 33.4 62.0 426.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 35.4 11.2 17.9 35.5 NO. OF DAYS WITH PRECIPITATION. 9 5 6 1 5 4 6 3 8 9 8 8 72 NO. OF DAYS PRECIPITATION EQUAL 9 5 6 1 5 4 6 3 8 9 8 8 72 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 4 2 0 0 0 1 0 0 0 2 1 2 12 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 79 78 74 58 70 73 71 73 78 86 83 76 75 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 56 50 48 38 51 52 50 52 58 63 58 55 53 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 79 69 69 55 69 70 73 75 81 84 84 76 74 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 3 2 0 0 0 0 0 0 0 0 0 0 5 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 1 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 2 1 8 18 20 4 0 0 0 53 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. 9 9 3 0 0 0 0 0 0 0 0 0 21 DATE OF START AND END FREEZING START = 8 JAN. END = 9 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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. 3.8 8.2 11.8 14.9 18.8 20.8 21.8 23.4 20.5 15.4 12.3 10.2 15.2 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.9 3.3 5.6 8.5 12.3 15.3 16.7 17.8 14.5 10.3 7.2 5.3 9.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.4 13.1 18.0 21.4 25.4 26.3 27.0 29.0 26.4 20.6 17.4 15.0 20.7 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.3 9.8 12.4 12.9 13.1 11.0 10.3 11.2 11.9 10.3 10.2 9.7 11.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.73 3.86 4.68 6.73 8.10 10.62 12.11 12.57 9.91 7.85 5.32 4.77 7.52 MEAN OF MIXING RATIO AT 09 GMT. 3.96 3.88 5.05 8.28 9.25 11.92 13.43 14.39 13.07 9.54 6.13 5.17 8.67 MEAN OF MIXING RATIO AT 15 GMT. 4.33 4.42 5.97 8.45 10.57 13.28 14.30 15.35 13.49 9.86 6.46 5.37 9.32 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -9.6 -3.4 -4.4 4.2 8.6 11.8 14.4 14.6 7.0 3.8 -1.5 -2.4 -9.6 DAY 29 12 12 1 21 10 20 29 24 30 19 22 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 18.0 23.5 28.5 33.0 38.0 38.5 34.5 36.0 35.0 32.5 25.0 23.0 38.5 DAY 1 28 29 6 15 23 29 15 8 6 15 29 24 HOUR MAXIMUM PRECIPITATION IN MM. 13.4 6.2 18.0 3.4 2.2 3.0 14.2 6.4 13.4 20.4 19.4 6.8 20.4 DAY 24 4 10 9 25 19 17 11 19 2 19 21 MONTHLY TOTAL PRECIPITATION IN MM. 55.6 27.0 34.2 8.8 6.8 9.0 30.2 21.2 26.2 32.0 35.2 23.0 309.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 37.8 8.0 25.1 29.2 NO. OF DAYS WITH PRECIPITATION. 7 7 8 4 5 5 6 6 5 5 8 6 72 NO. OF DAYS PRECIPITATION EQUAL 7 7 8 4 5 5 6 6 5 5 8 6 72 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 0 1 0 0 0 1 0 1 1 1 0 6 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 82 66 62 74 68 74 79 76 75 78 67 65 72 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 57 44 44 53 47 55 57 54 56 60 49 49 52 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 78 64 68 72 72 79 77 76 78 82 69 65 73 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 5 0 1 0 0 0 0 0 0 0 0 0 6 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 1 0 0 0 0 1 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 2 0 0 0 0 0 0 0 0 0 0 0 2 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 2 6 7 9 11 6 1 0 0 42 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. 18 3 3 0 0 0 0 0 0 0 1 2 27 DATE OF START AND END FREEZING START = 19 NOV. END = 12 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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. 6.1 7.9 12.0 12.5 15.5 20.6 23.8 22.8 21.8 19.0 11.8 2.9 14.7 AVERAGE OF MINIMUM TEMPERATURE IN C. 1.4 2.0 5.6 7.2 10.2 14.8 17.9 18.1 15.8 12.4 6.7 -1.3 9.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.8 13.7 18.5 17.7 20.8 26.5 29.7 27.5 27.8 25.5 16.8 7.0 20.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.4 11.7 12.9 10.5 10.6 11.7 11.8 9.4 12.0 13.1 10.1 8.3 11.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.55 3.82 4.78 6.66 8.15 10.21 13.09 14.19 10.65 8.52 5.70 3.59 7.74 MEAN OF MIXING RATIO AT 09 GMT. 3.74 4.25 4.71 7.52 9.31 11.85 15.01 16.11 13.57 9.82 5.84 3.77 8.79 MEAN OF MIXING RATIO AT 15 GMT. 4.33 4.70 5.57 7.88 9.73 13.01 15.99 16.28 14.66 11.15 7.05 3.92 9.52 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -9.4 -5.4 -2.6 2.4 5.4 11.8 12.0 14.6 12.4 1.6 2.2 -8.2 -9.4 DAY 13 17 7 14 2 23 2 14 30 5 18 15 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 21.5 25.5 28.0 30.0 34.5 35.0 34.5 34.5 33.5 35.0 26.5 18.5 35.0 DAY 1 13 26 18 24 12 12 3 28 9 12 8 24 HOUR MAXIMUM PRECIPITATION IN MM. 21.6 13.6 7.2 11.8 9.2 5.2 9.0 4.0 0.0 9.2 16.2 17.0 21.6 DAY 12 1 19 13 4 22 23 14 ** 22 26 22 MONTHLY TOTAL PRECIPITATION IN MM. 35.8 42.8 44.0 53.2 28.2 8.8 36.2 28.4 0.0 24.8 67.8 78.2 448.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 27.4 20.1 14.4 38.1 NO. OF DAYS WITH PRECIPITATION. 5 8 10 11 8 3 10 12 0 4 10 11 92 NO. OF DAYS PRECIPITATION EQUAL 5 8 10 11 8 3 10 12 0 4 10 11 92 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 2 0 1 0 0 0 0 0 0 2 3 9 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 65 66 65 79 80 69 75 83 74 72 73 77 73 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 46 48 39 60 61 52 54 65 54 48 49 58 53 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 69 68 61 80 79 76 77 85 79 73 76 74 75 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 3 1 0 0 0 0 0 0 0 0 0 6 10 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 2 1 0 0 0 0 3 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 1 3 4 15 11 5 6 0 0 45 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. 14 9 2 0 0 0 0 0 0 0 0 20 45 DATE OF START AND END FREEZING START = 3 DEC. END = 10 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 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. 6.5 5.9 7.1 12.2 16.1 18.3 20.8 23.3 20.2 19.2 10.9 8.3 14.1 AVERAGE OF MINIMUM TEMPERATURE IN C. 1.6 1.0 1.4 7.4 10.2 13.6 17.1 17.8 15.4 13.2 6.2 4.7 9.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.4 10.6 12.5 16.9 22.0 22.9 24.6 28.9 24.9 25.3 15.5 11.9 18.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.8 9.6 11.1 9.5 11.8 9.3 7.5 11.1 9.5 12.1 9.3 7.2 9.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.87 3.78 4.36 6.15 8.69 10.70 13.41 13.10 10.96 8.09 5.35 5.28 7.81 MEAN OF MIXING RATIO AT 09 GMT. 3.88 4.04 4.96 6.80 10.29 11.99 14.38 14.17 11.83 8.98 6.30 5.45 8.59 MEAN OF MIXING RATIO AT 15 GMT. 4.28 4.47 5.30 6.55 10.51 12.24 14.66 15.59 13.08 10.43 6.55 5.62 9.11 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -4.6 -6.0 -7.4 0.0 2.6 7.0 12.8 14.8 9.0 8.8 -1.4 -10.4 -10.4 DAY 21 18 2 18 1 7 3 1 28 7 16 12 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 22.5 19.0 23.0 35.0 31.5 28.5 30.0 37.5 36.0 33.0 25.5 22.0 37.5 DAY 12 3 7 7 16 18 7 10 18 10 10 18 24 HOUR MAXIMUM PRECIPITATION IN MM. 7.0 16.8 21.4 20.6 11.6 6.0 5.4 6.8 5.4 10.4 13.4 3.8 21.4 DAY 16 4 8 14 23 25 20 23 22 20 3 29 MONTHLY TOTAL PRECIPITATION IN MM. 23.8 51.8 74.6 93.0 46.0 31.8 30.6 34.8 20.2 23.4 35.4 24.8 490.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 30.6 34.8 17.5 17.1 NO. OF DAYS WITH PRECIPITATION. 6 9 13 14 12 8 10 10 6 7 6 11 112 NO. OF DAYS PRECIPITATION EQUAL 6 9 13 14 12 8 10 10 6 7 6 11 112 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 2 4 1 0 0 0 0 1 1 0 10 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 73 71 75 76 78 80 86 79 82 70 74 78 77 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 48 52 58 63 61 64 68 54 57 44 56 61 57 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 67 73 80 72 77 83 84 78 82 73 78 75 77 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 2 2 2 0 0 0 0 0 0 0 0 2 8 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 2 0 0 1 0 0 1 0 0 4 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 4 2 0 2 9 6 4 0 0 27 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. 11 12 7 1 0 0 0 0 0 0 1 4 36 DATE OF START AND END FREEZING START = 16 NOV. END = 18 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE PERIOD 1967 TO 2003 PAGE 1 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPE. IN C. 2.0 2.6 5.2 10.4 14.2 17.8 19.8 20.2 18.3 14.0 9.2 4.8 11.5 SD OF MEAN DAILY TEMPERATURE IN C. 3.14 3.01 2.91 2.37 2.03 1.93 1.82 2.07 1.61 2.22 2.68 2.63 2.37 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.8 -5.1 -2.8 2.2 6.0 9.3 11.2 11.7 9.9 5.9 1.4 -2.8 3.4 AVERAGE OF MAXIMUM TEMPERATURE IN C. 9.7 10.3 13.2 18.5 22.4 26.2 28.5 28.7 26.7 22.2 17.0 12.5 19.7 DIFFERENCE BETWEEN AVERAGE MAXIMUM 15.5 15.4 16.0 16.3 16.5 16.9 17.3 17.0 16.8 16.3 15.7 15.3 16.3 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.44 2.62 3.28 5.00 6.70 8.70 9.95 10.34 9.02 6.63 4.61 3.22 6.04 MEAN OF MIXING RATIO AT 09 GMT. 4.17 4.35 5.25 7.60 10.08 12.92 15.03 15.05 13.38 10.01 7.20 5.07 9.17 MEAN OF MIXING RATIO AT 15 GMT. 3.38 3.64 4.48 6.40 8.53 10.89 12.51 12.90 11.54 8.62 6.13 4.21 7.77 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -27.0 -23.5 -17.0 -11.0 -5.0 0.5 2.0 1.5 0.5 -7.0 -12.0 -19.5 -27.0 YEAR - DAY 77-16 72- 4 82-30 81- 1 88- 1 73- 3 90- 6 90-25 91-18 91-20 82-27 70-16 77-16 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 25.5 25.5 28.5 36.0 38.0 40.0 45.0 39.5 39.5 36.5 31.5 28.5 45.0 YEAR - DAY 79- 5 2-13 70-31 97-27 1-15 97-13 75-26 73-21 79- 7 89- 7 94- 4 98-10 75-26 24 HOUR MAXIMUM PRECIPITATION IN MM. 54.2 55.0 66.5 43.0 28.0 34.0 29.0 55.0 40.0 40.0 41.0 48.0 66.5 YEAR - DAY 98-13 68- 5 92-25 68- 3 72-11 76- 7 74-31 77-30 69-12 68-27 75-29 67-24 92-25 MONTHLY TOTAL PRECIPITATION IN MM. 57.6 50.1 52.3 44.0 38.0 19.3 19.0 16.2 18.8 30.4 34.8 48.0 428.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 37.4 23.7 12.6 26.4 NO. OF DAYS WITH PRECIPITATION. 7 7 8 6 6 4 4 4 4 5 6 7 68 NO. OF DAYS PRECIPITATION EQUAL 7 7 8 6 6 4 4 4 4 5 6 7 68 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 2 1 1 1 0 1 0 0 1 1 2 12 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 52 54 58 66 69 72 74 75 74 71 64 58 66 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 54 56 56 58 61 62 63 62 62 61 59 56 59 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 58 61 63 67 70 72 73 74 75 73 68 61 68 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 20 17 14 2 0 0 0 0 0 0 5 14 72 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 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 1 2 6 12 12 6 2 0 0 41 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 23 20 7 1 0 0 0 0 2 9 20 107 DATE OF START AND END FREEZING START = 7 OCT. END = 30 MAY IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION ZARDGOL-SORKHABAD LATITUDE 35 55 N DATA PROCESSING CENTER LONGITUDE 52 59 E ELEVATION 1500 MET. MEAN AND EXTREMES FOR THE PERIOD 1967 TO 2003 PAGE 2 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE DRY BULB TEMPERATURE. IN C. 3.0 3.6 6.2 11.0 14.7 18.2 20.2 20.5 18.5 14.3 9.8 5.7 12.1 AVERAGE DEW POINT TEMPERATURE. IN C. -6.3 -4.9 -1.8 3.9 8.3 12.0 14.2 14.6 12.8 8.2 2.9 -2.6 5.1 AVERAGE OF MIXING RATIO IN G/KG 3.32 3.55 4.35 6.33 8.44 10.83 12.50 12.76 11.32 8.42 5.98 4.17 7.66 AVERAGE OF VAPOUR PRESSURE HPA 4.48 4.79 5.88 8.54 11.37 14.57 16.78 17.13 15.21 11.34 8.07 5.63 10.32 AVERAGE OF SATURATION DEFICIT IN HPA 3.60 3.69 4.40 5.46 6.21 7.29 7.92 8.01 7.01 5.77 4.75 4.13 5.69 AVERAGE RELATIVE HUMIDITY IN PERCENT 55 57 59 64 67 68 70 70 71 68 64 58 64 AVERAGE OF MAXIMUM RELATIVE HUMIDITY(%) 67 69 70 72 75 77 77 78 79 77 73 69 74 AVERAGE OF MINIMUM RELATIVE HUMIDITY(%) 42 44 46 54 57 59 61 60 61 58 53 46 53 NO. OF DAYS PRECIPITATION EQUAL 4 4 4 3 3 1 1 1 1 2 3 4 31 OR MORE THAN 5 MM.