IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 1 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. AVERAGE OF MEAN DAILY TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MAX-MIN 1961 0.7 3.4 6.0 12.8 20.7 24.1 26.6 24.5 21.0 14.6 9.0 6.4 25.9 1962 3.1 5.8 11.4 12.1 18.7 22.3 26.4 24.2 19.9 15.8 7.8 5.3 23.3 1963 6.9 7.8 8.3 14.6 16.4 22.8 26.1 25.0 22.3 17.1 8.8 1.5 24.6 1964 -6.1 4.0 10.3 11.2 19.6 24.1 25.9 25.2 21.0 13.9 8.4 0.0 32.0 1965 -2.1 1.9 8.4 12.2 20.0 22.9 25.3 25.3 20.7 14.6 10.8 5.1 27.4 1966 7.6 7.6 8.7 13.9 18.7 24.8 26.1 26.3 21.2 14.8 9.0 3.9 22.4 1967 ****** 0.4 ****** 12.2 18.9 ****** ****** 28.2 21.9 15.9 9.4 ****** ****** 1968 -0.1 2.7 8.7 12.5 19.3 ****** 27.1 27.1 22.5 16.0 ****** ****** ****** 1969 -4.2 0.5 7.3 13.2 20.0 23.8 ****** ****** ****** ****** ****** ****** ****** 1970 ****** ****** ****** ****** ****** ****** ****** 23.8 19.1 15.9 11.7 3.8 ****** 1971 1.7 3.1 11.7 12.4 20.2 21.4 26.0 24.9 20.4 13.9 9.0 4.0 24.3 1972 -4.0 -3.1 5.1 14.0 14.7 21.9 25.3 22.9 21.9 18.6 9.0 -1.4 29.3 1973 -4.2 5.2 8.5 13.2 18.4 24.0 26.3 26.5 21.6 17.7 8.1 3.1 30.7 1974 -1.7 -1.8 6.8 12.3 20.6 24.1 25.2 24.6 21.4 14.5 10.7 -0.9 27.0 1975 -0.3 1.5 6.6 15.4 17.1 24.9 29.0 26.2 21.4 15.7 7.0 0.2 29.3 1976 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1977 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1978 1.2 4.6 9.0 13.8 17.8 21.6 25.6 24.5 22.8 17.0 4.5 6.0 24.4 1979 ****** ****** 6.9 15.2 16.5 21.5 27.3 23.9 22.4 17.2 9.4 2.1 ****** 1980 -1.4 0.2 7.7 14.7 18.1 22.9 26.9 25.2 21.1 14.3 9.7 4.8 28.3 1981 2.0 4.6 9.6 12.4 16.6 21.4 25.5 25.0 21.2 14.7 9.4 ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1985 0.8 3.8 5.1 14.6 20.0 24.8 26.0 24.2 23.1 15.5 10.7 4.9 25.2 1986 3.6 5.2 4.9 13.0 17.1 23.0 27.4 25.5 22.6 17.6 7.9 1.9 25.5 1987 4.9 6.3 7.8 13.2 20.4 25.0 26.2 26.4 21.6 11.8 10.1 5.0 21.5 1988 1.5 3.2 8.7 13.7 19.1 24.5 26.2 25.2 22.2 16.8 10.6 5.4 24.7 1989 -3.3 -4.5 8.4 16.2 19.1 24.7 27.7 27.4 22.4 18.0 10.9 5.8 32.2 1990 -0.4 1.7 7.8 13.6 19.6 25.3 27.2 26.3 24.3 16.4 12.3 4.1 27.6 1991 2.0 1.9 7.1 15.1 17.8 23.3 27.1 26.4 22.3 16.8 10.4 2.4 25.2 1992 -2.3 2.2 4.3 12.5 14.9 22.5 27.5 24.3 20.8 16.4 11.0 3.9 29.8 1993 -0.8 3.2 7.0 14.1 18.1 23.8 26.1 26.0 23.3 14.9 6.0 5.0 26.9 1994 4.1 3.4 9.5 15.6 18.6 22.9 26.1 26.2 20.7 15.8 10.3 2.7 23.5 1995 5.1 6.1 9.8 14.6 18.6 23.1 27.7 28.5 22.8 15.6 11.5 2.6 25.9 1996 0.0 4.3 5.6 12.6 19.7 23.9 26.5 26.5 23.7 16.3 9.3 6.8 26.5 1997 4.4 3.3 6.2 13.9 19.4 25.2 27.9 28.4 22.0 18.3 9.2 4.6 25.1 1998 -0.4 2.5 8.2 15.4 18.9 26.6 27.0 27.1 22.9 17.1 12.9 8.3 27.5 1999 3.4 7.8 8.8 14.8 20.6 25.1 25.4 28.3 22.2 17.9 8.0 5.4 24.9 2000 2.7 4.0 8.4 17.5 21.3 24.5 28.0 27.8 23.7 15.1 7.8 4.6 25.3 MEAN 0.8 3.1 7.8 13.8 18.7 23.7 26.6 25.8 21.9 16.0 9.4 3.8 25.8 SD 3.33 2.84 1.78 1.39 1.59 1.32 0.92 1.47 1.13 1.49 1.75 2.26 1.77 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 2 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. AVERAGE OF MINIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 -3.3 -1.9 0.3 6.5 12.9 15.5 17.3 15.7 12.0 6.4 1.9 1.0 7.0 1962 -1.9 0.7 4.8 5.7 11.4 14.0 18.2 16.4 11.4 8.6 1.4 0.3 7.6 1963 1.6 2.6 2.2 8.5 10.3 14.3 17.6 16.5 13.6 10.3 2.4 -2.8 8.1 1964 -10.8 -1.0 4.6 4.6 12.0 16.2 16.6 16.4 12.5 6.3 2.3 -4.6 6.3 1965 -5.9 -2.5 2.5 6.2 12.8 14.8 16.7 17.3 13.1 8.3 4.9 -0.6 7.3 1966 2.3 2.4 3.4 7.7 11.3 16.3 17.3 18.4 13.3 9.2 2.3 -2.4 8.5 1967 -5.6 -5.4 -1.0 5.5 11.9 17.0 19.9 20.6 13.7 9.9 2.4 -4.7 7.0 1968 -7.1 -3.9 2.7 6.5 12.6 14.9 18.6 19.0 14.1 8.9 1.3 -4.9 6.9 1969 -9.9 -4.0 1.6 7.2 13.0 15.4 ****** ****** ****** ****** ****** ****** ****** 1970 ****** ****** ****** ****** ****** ****** ****** 13.2 9.3 7.8 5.2 -0.9 ****** 1971 -3.9 -2.0 5.9 6.4 12.6 12.2 17.3 15.8 11.1 5.3 2.9 -0.7 6.9 1972 -7.4 -7.7 -0.3 7.2 7.7 13.6 16.2 14.1 12.1 9.7 1.8 -5.7 5.1 1973 -9.7 -0.8 1.1 5.0 8.9 12.8 15.4 16.4 11.6 8.4 -1.0 -5.2 5.2 1974 -7.4 -8.0 1.5 5.0 11.4 13.3 15.4 14.3 11.6 5.0 2.8 -5.9 4.9 1975 -5.2 -3.1 -0.1 7.2 9.3 15.8 18.9 16.6 11.6 5.4 0.1 -5.0 5.9 1976 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1977 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1978 -4.3 -1.5 2.7 6.1 9.6 12.9 17.0 15.6 14.2 9.7 -1.3 1.6 6.9 1979 ****** ****** 1.1 8.6 9.5 12.9 19.0 15.5 14.0 9.6 1.6 -2.9 ****** 1980 -5.4 -3.9 2.0 7.7 10.1 14.1 18.2 16.6 12.5 6.8 4.1 -0.6 6.8 1981 -2.8 -0.6 3.8 5.9 9.3 13.6 17.4 17.0 12.7 8.2 2.9 ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1985 -4.2 -1.8 -0.9 7.7 12.1 15.5 16.9 16.2 14.6 8.1 4.5 0.2 7.4 1986 -2.6 -0.3 -0.7 7.2 10.6 15.0 19.4 17.9 14.6 11.2 3.8 -2.2 7.8 1987 -0.8 0.8 3.1 6.5 13.6 16.8 18.4 18.6 13.9 6.7 4.5 0.9 8.6 1988 -2.3 -1.6 3.0 7.4 11.4 16.8 18.0 17.7 14.2 10.3 5.1 0.6 8.4 1989 -7.8 -9.2 3.2 9.6 11.7 16.1 19.4 20.1 15.0 11.5 5.7 1.4 8.1 1990 -4.1 -2.5 1.7 7.1 11.4 16.9 19.5 17.9 16.0 10.0 6.6 -0.8 8.3 1991 -1.8 -2.3 2.5 8.9 11.1 15.2 19.2 18.5 14.5 10.7 5.0 -1.6 8.3 1992 -6.1 -2.0 -0.3 6.2 9.3 14.7 19.3 16.5 13.2 9.7 5.5 0.4 7.2 1993 -4.5 -1.3 2.1 8.0 11.8 16.0 18.3 18.5 15.8 8.7 1.9 0.9 8.0 1994 0.0 -1.3 3.9 9.5 11.7 14.5 16.9 17.3 13.8 10.2 5.7 -1.1 8.5 1995 -0.1 1.2 3.7 8.9 12.4 15.6 18.8 20.3 15.9 9.0 5.3 -1.6 9.1 1996 -3.4 0.2 1.4 7.2 13.1 16.1 19.2 19.1 16.2 10.2 4.1 2.2 8.8 1997 -0.3 -2.6 1.1 8.1 12.7 18.0 19.5 20.9 14.8 12.1 4.9 0.8 9.2 1998 -3.8 -1.8 2.9 9.1 12.3 19.6 19.2 19.9 15.8 10.4 7.0 3.6 9.5 1999 -0.9 2.5 3.4 8.2 13.2 16.9 18.0 21.6 14.5 11.6 3.5 0.9 9.4 2000 -1.6 -0.9 2.7 11.1 13.5 16.1 20.7 20.5 16.4 9.9 3.3 1.3 9.4 MEAN -4.0 -1.9 2.1 7.3 11.4 15.3 18.1 17.6 13.6 8.9 3.4 -1.2 7.6 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 3 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. AVERAGE OF MAXIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 4.8 8.7 12.1 18.9 28.5 32.6 35.9 33.2 29.9 22.8 16.1 11.9 21.3 1962 8.1 11.0 18.0 18.4 26.0 30.6 34.6 32.0 28.5 23.0 14.3 10.3 21.2 1963 12.1 12.9 14.4 20.7 22.5 31.2 34.6 33.4 30.9 24.0 15.3 5.9 21.5 1964 -1.3 8.9 16.0 17.8 27.1 32.1 35.3 34.1 29.6 21.5 14.5 4.7 20.0 1965 1.6 6.2 14.4 18.1 27.1 31.0 33.9 33.4 28.4 20.8 16.7 10.9 20.2 1966 12.9 12.8 14.5 20.2 26.0 33.4 34.9 34.2 29.1 20.4 15.8 10.3 22.0 1967 ****** 6.3 ****** 18.8 26.0 ****** ****** 35.8 30.1 22.0 16.5 ****** ****** 1968 7.3 8.3 14.4 18.8 26.2 ****** 36.0 35.2 30.6 22.7 ****** ****** ****** 1969 1.5 5.1 13.1 19.2 27.0 32.2 ****** ****** ****** ****** ****** ****** ****** 1970 ****** ****** ****** ****** ****** ****** ****** 34.4 28.9 24.0 18.3 8.5 ****** 1971 7.2 8.2 17.7 18.4 27.7 30.7 34.7 34.0 29.6 22.5 15.0 8.6 21.2 1972 -0.6 1.5 10.5 20.9 21.6 30.3 34.3 31.7 31.7 27.6 16.2 2.9 19.0 1973 1.3 11.2 15.9 21.5 28.0 35.2 37.3 36.7 31.6 27.0 17.3 11.5 22.9 1974 4.0 4.4 12.1 19.6 29.7 34.9 34.9 34.9 31.2 24.1 18.6 4.2 21.0 1975 4.6 6.2 13.3 23.6 25.0 34.1 39.0 35.7 31.3 26.0 13.9 5.5 21.5 1976 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1977 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1978 6.6 10.7 15.2 21.4 26.1 30.3 34.2 33.3 31.3 24.4 10.3 10.3 21.2 1979 ****** ****** 12.7 21.8 23.5 30.2 35.6 32.4 30.8 24.7 17.1 7.1 ****** 1980 2.7 4.4 13.4 21.6 26.2 31.7 35.5 33.8 29.7 21.8 15.4 10.2 20.5 1981 6.8 9.8 15.4 18.9 24.0 29.3 33.6 33.0 29.7 21.3 16.2 ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1985 5.7 9.4 11.2 21.6 27.9 34.0 35.3 32.2 31.8 22.9 17.0 9.4 21.5 1986 9.7 10.7 10.6 18.8 23.6 31.1 35.4 33.0 30.6 24.1 12.1 6.1 20.5 1987 10.6 11.8 12.4 19.8 27.2 33.2 34.0 34.3 29.2 17.0 15.7 9.2 21.2 1988 5.3 8.0 14.3 19.9 26.8 32.1 34.5 32.8 30.1 23.3 16.1 10.1 21.1 1989 1.3 0.3 13.6 22.7 26.4 33.5 36.0 34.6 29.9 24.4 16.2 10.1 20.7 1990 3.2 6.0 13.9 20.1 27.8 33.6 34.8 34.6 32.7 22.8 17.9 9.0 21.4 1991 5.8 6.2 11.8 21.3 24.5 31.4 34.9 34.3 30.0 23.0 15.9 6.4 20.4 1992 1.4 6.3 8.9 18.8 20.6 30.3 35.6 32.0 28.5 23.1 16.5 7.5 19.1 1993 3.0 7.8 11.9 20.3 24.5 31.5 33.9 33.5 30.9 21.2 10.1 9.2 19.8 1994 8.2 8.1 15.0 21.7 25.5 31.2 35.3 35.1 27.6 21.4 14.9 6.4 20.9 1995 10.2 10.9 15.9 20.3 24.9 30.6 36.7 36.7 29.7 22.1 17.7 6.8 21.9 1996 3.5 8.5 9.9 17.9 26.2 31.6 33.8 33.9 31.3 22.3 14.5 11.5 20.4 1997 9.1 9.3 11.3 19.8 26.1 32.4 36.3 36.0 29.2 24.6 13.4 8.4 21.3 1998 3.0 6.9 13.6 21.6 25.5 33.7 34.9 34.3 30.0 23.7 18.7 13.0 21.6 1999 7.7 13.1 14.2 21.4 28.1 33.3 32.9 35.1 29.9 24.2 12.6 9.8 21.8 2000 7.0 8.8 14.1 23.9 29.2 33.0 35.3 35.0 31.0 20.3 12.3 7.9 21.5 MEAN 5.4 8.1 13.5 20.3 26.0 32.1 35.1 34.1 30.2 23.0 15.4 8.5 21.0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 4 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. DIFFERENCE BETWEEN AVERAGE MAXIMUM AND MINIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 8.1 10.6 11.8 12.4 15.6 17.1 18.6 17.5 17.9 16.4 14.2 10.9 14.3 1962 10.0 10.3 13.2 12.7 14.6 16.6 16.4 15.6 17.1 14.4 12.9 10.0 13.6 1963 10.5 10.3 12.2 12.2 12.2 16.9 17.0 16.9 17.3 13.7 12.9 8.7 13.4 1964 9.5 9.9 11.4 13.2 15.1 15.9 18.7 17.7 17.1 15.2 12.2 9.3 13.8 1965 7.5 8.7 11.9 11.9 14.3 16.2 17.2 16.1 15.3 12.5 11.8 11.5 12.9 1966 10.6 10.4 11.1 12.5 14.7 17.1 17.6 15.8 15.8 11.2 13.5 12.7 13.6 1967 ****** 11.7 ****** 13.3 14.1 ****** ****** 15.2 16.4 12.1 14.1 ****** ****** 1968 14.4 12.2 11.7 12.3 13.6 ****** 17.4 16.2 16.5 13.8 ****** ****** ****** 1969 11.4 9.1 11.5 12.0 14.0 16.8 ****** ****** ****** ****** ****** ****** ****** 1970 ****** ****** ****** ****** ****** ****** ****** 21.2 19.6 16.2 13.1 9.4 ****** 1971 11.1 10.2 11.8 12.0 15.1 18.5 17.4 18.2 18.5 17.2 12.1 9.3 14.3 1972 6.8 9.2 10.8 13.7 13.9 16.6 18.1 17.6 19.6 17.9 14.4 8.6 13.9 1973 11.0 12.0 14.8 16.5 19.1 22.4 21.9 20.3 20.0 18.6 18.3 16.7 17.6 1974 11.4 12.4 10.6 14.6 18.3 21.6 19.5 20.6 19.6 19.1 15.8 10.1 16.1 1975 9.8 9.3 13.4 16.4 15.7 18.3 20.1 19.1 19.6 20.6 13.8 10.5 15.5 1976 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1977 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1978 10.9 12.2 12.5 15.3 16.5 17.4 17.2 17.7 17.1 14.7 11.6 8.7 14.3 1979 ****** ****** 11.6 13.2 14.0 17.3 16.6 16.9 16.8 15.1 15.5 10.0 ****** 1980 8.1 8.3 11.4 13.9 16.1 17.6 17.3 17.2 17.2 15.0 11.3 10.8 13.7 1981 9.6 10.4 11.6 13.0 14.7 15.7 16.2 16.0 17.0 13.1 13.3 ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1985 9.9 11.2 12.1 13.9 15.8 18.5 18.4 16.0 17.2 14.8 12.5 9.2 14.1 1986 12.3 11.0 11.3 11.6 13.0 16.1 16.0 15.1 16.0 12.9 8.3 8.3 12.7 1987 11.4 11.0 9.3 13.3 13.6 16.4 15.6 15.7 15.3 10.3 11.2 8.3 12.6 1988 7.6 9.6 11.3 12.5 15.4 15.3 16.5 15.1 15.9 13.0 11.0 9.5 12.7 1989 9.1 9.5 10.4 13.1 14.7 17.4 16.6 14.5 14.9 12.9 10.5 8.7 12.7 1990 7.3 8.5 12.2 13.0 16.4 16.7 15.3 16.7 16.7 12.8 11.3 9.8 13.1 1991 7.6 8.5 9.3 12.4 13.4 16.2 15.7 15.8 15.5 12.3 10.9 8.0 12.1 1992 7.5 8.3 9.2 12.6 11.3 15.6 16.3 15.5 15.3 13.4 11.0 7.1 11.9 1993 7.5 9.1 9.8 12.3 12.7 15.5 15.6 15.0 15.1 12.5 8.2 8.3 11.8 1994 8.2 9.4 11.1 12.2 13.8 16.7 18.4 17.8 13.8 11.2 9.2 7.5 12.4 1995 10.3 9.7 12.2 11.4 12.5 15.0 17.9 16.4 13.8 13.1 12.4 8.4 12.8 1996 6.9 8.3 8.5 10.7 13.1 15.5 14.6 14.8 15.1 12.1 10.4 9.3 11.6 1997 9.4 11.9 10.2 11.7 13.4 14.4 16.8 15.1 14.4 12.5 8.5 7.6 12.2 1998 6.8 8.7 10.7 12.5 13.2 14.1 15.7 14.4 14.2 13.3 11.7 9.4 12.1 1999 8.6 10.6 10.8 13.2 14.9 16.4 14.9 13.5 15.4 12.6 9.1 8.9 12.4 2000 8.6 9.7 11.4 12.8 15.7 16.9 14.6 14.5 14.6 10.4 9.0 6.6 12.1 MEAN 9.4 10.1 11.3 12.9 14.5 16.8 17.1 16.5 16.5 14.0 12.0 9.4 13.4 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 5 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 03 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 3.48 3.33 4.01 5.50 7.44 7.45 8.97 8.87 7.77 5.53 3.80 3.76 5.82 1962 3.51 3.58 3.83 5.65 7.12 7.61 9.18 9.04 6.63 5.65 4.41 4.02 5.85 1963 3.90 3.61 3.60 6.28 7.55 8.45 9.72 10.56 8.31 6.72 4.49 3.29 6.37 1964 ****** 3.27 4.49 4.55 5.47 8.57 9.92 9.32 7.72 4.34 3.95 3.14 ****** 1965 3.20 3.43 4.35 4.94 7.12 8.83 10.27 9.14 8.27 7.10 5.04 3.25 6.25 1966 3.78 3.73 4.37 5.56 6.86 7.89 9.69 8.70 7.47 6.93 3.85 2.74 5.97 1967 2.58 2.83 3.27 4.96 6.32 4.66 6.13 8.15 7.40 6.86 3.91 2.82 4.99 1968 2.61 3.37 4.90 6.04 8.80 9.27 9.18 9.15 7.03 7.20 5.74 2.83 6.34 1969 2.46 3.24 4.22 4.86 6.38 8.91 ****** ****** ****** ****** ****** ****** ****** 1970 ****** ****** ****** ****** ****** ****** ****** 15.88 13.34 11.81 7.46 4.50 ****** 1971 3.59 4.48 7.60 8.54 13.40 9.67 11.47 11.70 10.01 7.40 6.40 4.13 8.20 1972 2.55 2.75 4.40 7.19 8.32 11.14 10.58 9.79 8.30 6.40 4.47 2.97 6.57 1973 2.42 3.86 3.56 4.61 6.56 8.47 10.05 9.35 8.18 5.43 3.31 2.67 5.70 1974 2.59 2.54 4.88 5.45 8.83 10.10 10.67 9.64 8.55 5.06 4.34 3.04 6.31 1975 2.99 3.39 4.10 6.78 9.24 15.10 14.78 13.43 9.24 5.85 3.61 2.18 7.56 1976 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1977 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1978 3.02 3.52 3.88 4.74 6.72 7.40 8.47 8.92 6.86 6.08 3.31 4.47 5.62 1979 ****** ****** 4.11 5.41 7.02 8.16 8.99 7.08 6.84 5.61 3.35 3.54 ****** 1980 2.91 3.20 4.59 5.67 7.19 7.57 8.51 9.71 6.66 5.58 5.25 3.56 5.86 1981 3.24 3.64 4.78 5.79 6.91 8.95 10.05 9.72 6.43 6.11 3.51 ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1985 3.36 3.19 3.73 5.48 6.52 8.36 9.39 8.34 6.21 4.89 5.10 3.78 5.70 1986 2.92 3.51 3.64 6.42 7.87 8.34 9.05 8.76 6.48 6.45 4.92 3.38 5.98 1987 3.10 3.79 4.46 5.01 8.20 8.31 8.38 8.91 7.69 5.99 4.36 4.01 6.02 1988 3.49 3.42 4.08 6.08 7.00 8.28 10.02 9.51 7.66 6.05 4.43 3.50 6.13 1989 2.35 2.14 4.63 4.97 6.95 8.58 10.36 9.01 7.03 5.39 4.87 4.26 5.88 1990 2.99 3.19 3.82 5.00 6.08 7.63 9.37 9.46 7.16 5.97 4.42 3.36 5.70 1991 3.45 3.17 4.64 6.17 6.51 8.57 8.86 8.86 7.60 6.65 4.77 3.78 6.09 1992 2.62 3.09 3.78 5.64 7.55 9.56 9.79 8.64 7.24 4.73 4.40 3.77 5.90 1993 2.54 3.39 3.91 5.31 7.56 8.40 10.02 9.69 7.96 5.43 4.99 3.92 6.09 1994 3.96 3.32 4.29 6.27 7.33 7.62 9.31 9.83 6.94 6.96 5.63 3.43 6.24 1995 3.35 3.57 3.89 5.99 7.71 8.76 10.37 10.09 7.06 5.80 3.59 3.18 6.11 1996 3.23 4.12 4.31 6.00 8.47 8.58 10.42 8.94 7.59 5.98 4.18 3.60 6.28 1997 3.17 2.70 3.71 4.85 6.83 9.05 10.94 8.62 6.75 5.76 5.08 4.09 5.96 1998 3.27 3.21 4.36 6.20 8.16 8.34 10.08 10.29 8.24 5.79 4.79 4.48 6.43 1999 3.62 3.42 3.90 5.35 6.49 7.54 9.58 9.48 8.36 5.65 4.74 4.16 6.02 2000 3.17 3.09 3.39 5.61 6.48 7.73 8.34 8.70 8.83 6.26 4.76 4.27 5.89 MEAN 3.11 3.34 4.22 5.68 7.44 8.59 9.73 9.57 7.77 6.16 4.57 3.58 6.14 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 6 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 09 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 4.13 4.13 3.88 5.53 6.36 5.53 6.60 8.08 6.35 4.82 4.07 4.11 5.30 1962 4.20 4.07 3.64 5.70 6.23 6.75 6.36 8.30 4.96 5.08 4.10 3.82 5.27 1963 4.07 3.82 3.39 5.42 6.51 6.33 8.25 8.20 5.91 6.05 4.83 3.93 5.56 1964 ****** 3.83 4.06 3.99 3.99 6.19 7.91 7.02 5.74 3.96 3.63 3.63 ****** 1965 3.89 3.76 4.04 4.17 5.37 7.17 8.19 7.67 7.07 6.72 4.62 3.78 5.54 1966 3.95 4.08 4.29 4.77 6.32 6.58 7.91 7.21 6.88 7.13 3.59 3.75 5.54 1967 3.52 3.36 2.43 3.89 6.10 4.93 7.37 9.74 6.28 7.08 3.70 3.41 5.15 1968 3.67 5.06 4.79 7.63 9.17 8.51 10.60 7.74 7.49 7.78 4.69 4.32 6.79 1969 3.66 3.79 4.22 4.12 6.14 7.18 ****** ****** ****** ****** ****** ****** ****** 1970 ****** ****** ****** ****** ****** ****** ****** 22.77 19.87 14.99 10.88 6.30 ****** 1971 5.18 5.89 8.18 10.22 18.88 11.38 11.23 12.96 11.60 8.45 8.10 4.88 9.75 1972 3.45 3.83 5.60 7.90 9.92 14.91 10.10 7.87 7.70 6.13 4.89 3.86 7.18 1973 3.54 4.95 4.82 5.93 7.02 8.59 11.22 11.47 ****** 6.24 4.22 4.17 ****** 1974 4.44 4.63 7.02 8.79 11.56 16.98 17.54 12.10 11.61 6.62 5.79 3.65 9.23 1975 3.87 4.05 5.48 9.61 11.24 25.23 24.29 27.02 14.20 5.51 4.68 3.27 11.54 1976 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1977 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1978 3.57 3.87 4.29 4.47 5.88 6.76 7.56 6.65 5.23 5.32 3.61 4.55 5.15 1979 ****** ****** 4.19 5.15 6.40 7.04 7.61 6.44 6.21 5.25 3.78 4.04 ****** 1980 3.38 4.05 4.61 5.30 6.63 6.52 6.86 7.98 5.38 5.75 5.62 3.49 5.46 1981 3.71 3.93 4.49 5.48 6.43 7.29 7.97 7.98 5.08 5.94 3.48 ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1985 4.20 3.00 3.86 4.60 4.93 6.68 8.20 7.01 4.82 4.72 5.72 4.14 5.16 1986 3.16 3.78 4.11 7.45 8.28 8.77 7.60 7.29 5.27 6.40 5.13 3.73 5.91 1987 3.33 4.31 4.61 5.19 8.02 6.77 7.25 7.31 6.64 6.05 4.35 4.16 5.67 1988 3.78 3.66 3.97 5.89 5.85 5.73 9.26 8.71 7.48 5.64 4.08 3.98 5.67 1989 2.64 2.58 5.04 5.84 6.17 6.85 8.67 7.54 7.59 5.18 4.82 4.67 5.63 1990 3.38 3.67 3.77 4.69 5.41 6.02 7.84 8.06 5.57 5.42 4.27 3.46 5.13 1991 3.86 3.50 5.37 6.25 5.70 6.76 7.37 7.07 6.16 6.12 4.81 3.92 5.57 1992 2.84 3.26 3.85 5.49 7.59 8.34 8.31 7.64 5.13 4.70 4.44 3.78 5.45 1993 2.72 3.68 3.87 5.61 6.54 8.81 9.67 9.05 7.92 5.20 5.58 4.55 6.10 1994 4.44 3.61 4.40 6.82 7.01 7.41 8.85 8.06 6.75 7.03 6.09 3.55 6.17 1995 3.73 3.77 4.04 6.07 7.95 7.40 8.98 7.69 6.23 5.91 3.30 3.51 5.71 1996 3.70 4.59 4.59 5.61 8.18 8.01 9.29 8.87 7.12 5.85 4.10 3.80 6.14 1997 3.35 2.60 3.60 4.74 6.48 8.01 9.34 7.11 6.09 5.74 5.33 4.66 5.59 1998 3.53 3.39 4.37 6.40 7.54 6.57 8.73 9.42 7.80 5.73 5.00 4.66 6.10 1999 3.62 3.46 4.02 4.86 4.96 6.41 9.38 7.48 7.58 5.69 5.13 4.57 5.60 2000 3.33 3.22 3.37 5.17 5.24 5.73 6.79 6.96 7.25 6.46 5.19 4.77 5.29 MEAN 3.69 3.86 4.42 5.85 7.24 8.19 9.19 9.20 7.37 6.20 4.88 4.09 6.18 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 7 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 15 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 4.00 3.80 3.49 5.61 6.97 6.35 7.64 8.05 6.72 5.11 3.99 3.60 5.44 1962 3.76 3.96 3.67 6.04 6.51 6.62 8.21 8.30 6.05 5.46 4.12 3.94 5.55 1963 3.96 3.56 3.43 5.38 6.72 7.07 8.21 8.13 6.80 6.56 4.53 3.66 5.67 1964 ****** 3.44 4.29 3.68 4.58 6.57 8.45 7.45 6.75 4.56 3.84 3.34 ****** 1965 3.48 3.53 4.21 4.50 5.98 7.34 9.14 9.05 7.80 7.23 5.00 3.37 5.88 1966 3.92 3.98 4.38 4.97 6.74 7.57 8.58 7.96 7.27 7.04 3.48 2.94 5.74 1967 3.03 2.95 2.32 3.77 5.36 4.65 6.66 8.85 7.26 7.58 5.33 3.10 5.07 1968 3.34 4.92 5.39 7.05 10.00 11.82 15.01 10.05 9.09 10.11 6.69 3.75 8.10 1969 2.49 3.46 4.42 4.46 5.62 7.32 ****** ****** ****** ****** ****** ****** ****** 1970 ****** ****** ****** ****** ****** ****** ****** 23.00 18.69 12.77 10.93 6.07 ****** 1971 5.22 5.73 9.44 10.32 15.95 12.15 13.99 14.20 11.98 8.57 7.47 4.64 9.97 1972 2.99 3.33 5.32 8.78 10.35 14.58 15.13 12.77 10.52 8.49 5.62 3.54 8.45 1973 3.41 5.38 5.09 5.88 8.57 10.02 13.54 10.77 9.51 7.36 4.29 4.09 7.32 1974 3.45 3.74 6.03 7.24 10.84 13.85 14.57 11.62 10.74 6.52 4.96 3.55 8.09 1975 3.81 4.26 5.58 8.77 10.66 15.07 17.02 15.10 11.88 6.20 4.31 2.79 8.79 1976 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1977 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1978 3.45 3.88 4.10 4.18 5.75 6.17 8.00 6.58 5.29 5.37 3.27 4.08 5.01 1979 ****** ****** 4.14 5.16 5.83 6.68 6.64 6.72 6.49 5.50 3.96 3.92 ****** 1980 3.30 3.98 4.20 5.00 6.31 6.45 7.58 7.12 5.61 5.35 5.38 3.91 5.35 1981 3.66 4.03 4.32 5.83 6.29 7.65 7.99 7.81 5.83 6.16 3.60 ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1985 3.91 3.17 3.87 5.07 5.60 7.07 8.06 7.15 4.74 4.72 5.56 4.24 5.26 1986 3.21 3.93 4.16 7.00 8.46 7.20 7.41 7.41 5.58 6.53 5.15 3.85 5.82 1987 3.29 4.08 4.48 5.42 7.87 6.91 7.14 6.96 6.32 6.30 4.67 4.27 5.64 1988 3.89 3.58 3.60 5.96 5.85 6.17 8.80 8.16 6.76 5.89 4.67 3.87 5.60 1989 2.66 2.63 4.97 4.61 5.75 6.63 8.04 7.52 6.99 5.19 4.79 4.75 5.38 1990 3.45 3.54 3.63 4.28 5.40 5.29 7.38 7.30 5.17 5.73 4.43 3.42 4.92 1991 3.85 3.44 4.98 5.66 5.54 6.04 6.96 6.96 5.92 5.93 4.72 4.02 5.33 1992 2.90 3.57 4.22 5.34 7.43 7.76 8.54 7.41 4.92 5.42 4.91 4.08 5.54 1993 2.67 3.82 3.78 5.12 6.78 8.56 9.53 8.72 7.94 5.72 5.52 4.73 6.08 1994 4.39 3.48 4.47 6.49 7.03 7.44 8.68 7.82 7.22 7.15 6.09 3.66 6.16 1995 3.66 3.59 4.05 6.06 7.55 7.26 7.29 6.97 6.60 5.83 3.45 3.65 5.50 1996 3.67 4.56 4.76 5.60 7.72 7.89 9.34 10.30 6.72 6.01 4.03 3.96 6.21 1997 3.37 2.34 3.36 4.82 6.36 7.10 7.69 6.47 5.86 6.03 5.44 4.68 5.29 1998 3.49 3.52 4.31 6.07 7.52 6.81 8.55 9.00 7.24 5.86 5.32 4.98 6.06 1999 3.76 3.45 3.94 4.62 5.07 5.47 8.73 7.71 7.16 5.59 4.90 4.69 5.42 2000 3.39 3.23 3.23 4.89 4.92 5.40 6.66 6.74 6.45 6.38 4.90 4.89 5.09 MEAN 3.53 3.76 4.41 5.70 7.18 7.86 9.25 9.01 7.53 6.48 4.99 4.01 6.14 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 8 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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 1961 -9.4 16 -9.0 3 -5.5 4 -1.2 17 7.0 1 7.0 7 13.0 31 11.2 9 7.5 16 1.5 25 -5.4 24 -3.0 20 -9.4 1962 -6.5 16 -4.6 22 -1.2 3 1.5 19 4.6 12 6.4 11 13.5 9 12.5 15 7.0 21 0.8 13 -4.6 30 -4.6 3 -6.5 1963 -4.0 9 -4.2 8 -7.0 8 2.8 22 5.0 13 10.2 13 12.5 1 13.5 4 10.5 11 4.6 30 -3.7 29 -13.4 28 -13.4 1964 -15.7 5 -6.8 1 -4.0 8 -2.2 12 2.2 2 12.2 23 13.0 8 13.0 21 8.6 17 0.8 29 -7.0 29 -10.4 28 -15.7 1965 -11.5 20 -14.4 3 -6.0 14 0.2 5 4.0 4 12.2 26 15.0 7 13.0 9 8.2 24 0.9 27 0.0 11 -7.4 23 -14.4 1966 -4.2 14 -1.4 7 -2.5 3 2.6 4 4.0 18 11.5 21 13.0 2 14.5 8 10.0 28 6.5 17 -3.0 29 -8.0 23 -8.0 1967 -12.0 31 -15.0 3 -7.0 9 -8.0 1 4.5 1 6.5 5 10.0 21 16.5 20 10.0 28 6.5 17 -5.0 29 -8.0 2 -15.0 1968 -10.0 20 -11.5 7 -3.5 24 1.5 4 6.5 30 7.0 9 14.5 2 16.0 14 10.5 7 4.5 13 -4.0 14 -14.0 29 -14.0 1969 -14.8 20 -10.0 2 -8.0 23 -1.0 5 5.0 1 13.0 17 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1970 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** 7.5 30 2.5 13 2.5 25 0.7 30 -6.0 18 ***** 1971 -8.0 19 -10.6 15 -1.5 1 -2.0 3 9.5 13 8.0 4 12.5 28 12.5 8 7.0 17 2.0 12 0.0 5 -7.5 21 -10.6 1972 -17.5 24 -15.5 3 -7.0 20 1.5 6 2.0 11 8.5 17 12.5 29 8.5 29 8.0 8 6.0 26 -2.0 18 -16.5 25 -17.5 1973 -16.5 3 -10.0 7 -6.5 9 0.0 13 1.5 5 7.0 9 11.5 1 12.0 16 4.0 27 1.5 31 -9.5 8 -10.0 15 -16.5 1974 -12.5 30 -15.0 4 -7.0 6 -4.0 2 4.0 1 10.0 4 11.0 22 10.0 26 8.0 25 1.5 22 -3.0 27 -13.0 24 -15.0 1975 -9.0 30 -11.0 13 -7.5 9 3.0 25 5.0 19 12.0 9 16.0 6 13.0 21 8.0 24 1.0 27 -4.0 8 -9.0 22 -11.0 1976 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1977 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1978 -16.2 16 -6.5 6 -3.0 8 -1.2 16 1.6 4 7.0 3 11.0 3 11.8 21 10.0 28 6.2 26 -6.0 24 -5.4 24 -16.2 1979 ***** ** ***** ** -7.4 2 -0.2 29 -1.0 1 9.6 12 14.0 20 13.0 3 8.0 27 3.7 31 -4.0 21 -7.0 22 ***** 1980 -13.2 25 -12.8 1 -4.2 7 0.0 18 4.6 7 9.3 1 14.6 4 12.5 30 5.0 23 1.8 22 -2.5 26 -5.4 13 -13.2 1981 -10.0 2 -4.8 24 -3.0 5 -5.4 2 2.2 3 9.0 7 12.9 22 14.0 26 6.4 24 5.0 18 -3.0 24 ***** ** ***** 1982 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1983 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1984 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1985 -14.0 4 -9.0 24 -10.5 9 1.0 17 5.6 5 11.0 10 12.9 29 12.5 29 9.2 21 1.2 31 0.8 21 -5.6 31 -14.0 1986 -12.0 24 -5.0 3 -6.5 3 2.5 21 5.2 18 10.0 21 14.4 2 12.8 5 8.0 30 6.0 25 -3.2 21 -7.2 12 -12.0 1987 -4.4 1 -4.0 7 -3.0 21 -3.0 6 8.0 6 11.4 6 13.2 4 12.0 28 8.0 24 -0.5 27 -3.8 30 -5.4 31 -5.4 1988 -8.5 20 -7.0 13 -2.8 6 -1.9 6 3.6 4 13.5 20 13.0 27 12.4 31 10.2 30 4.4 23 -5.6 15 -8.0 29 -8.5 1989 -17.0 16 -15.6 1 -2.6 31 3.0 2 4.5 1 11.6 1 17.0 2 14.0 19 7.0 23 4.0 23 -2.0 22 -2.4 6 -17.0 1990 -13.1 12 -8.0 8 -6.0 17 -2.0 3 7.0 9 12.0 7 13.0 6 14.0 2 12.0 30 4.0 15 -2.6 14 -14.6 28 -14.6 1991 -5.6 28 -11.0 13 -10.0 11 1.0 14 5.0 7 9.0 13 12.8 16 14.2 27 8.8 28 7.6 24 0.0 24 -9.0 28 -11.0 1992 -13.8 11 -9.0 12 -8.0 1 -0.7 3 -0.4 5 11.0 5 12.6 12 12.0 30 7.0 29 4.5 8 -6.0 27 -8.0 29 -13.8 1993 -11.6 22 -8.0 16 -5.5 23 1.8 9 4.0 9 10.5 22 13.0 13 15.0 5 9.0 28 4.5 8 -6.0 30 -4.0 6 -11.6 1994 -3.8 26 -6.6 19 -1.2 1 0.5 5 5.6 7 8.5 5 12.4 1 15.2 7 10.0 7 5.0 24 0.0 10 -9.6 7 -9.6 1995 -5.5 21 -4.2 25 0.0 6 1.2 7 3.6 9 12.0 1 15.0 6 15.0 24 7.5 22 3.0 19 -4.0 27 -6.0 20 -6.0 1996 -11.0 22 -5.5 3 -5.4 1 -0.8 4 8.2 2 10.0 12 10.6 15 15.4 15 10.4 21 4.8 31 -2.0 12 -3.5 12 -11.0 1997 -11.4 29 -9.6 7 -7.0 9 -3.5 12 5.0 6 11.8 4 15.4 6 15.2 21 8.2 15 7.0 30 1.4 28 -4.6 27 -11.4 1998 -14.0 11 -9.6 17 -5.4 3 0.2 25 4.8 3 14.8 1 16.2 9 16.6 4 12.0 8 5.6 25 1.2 30 -1.0 5 -14.0 1999 -6.6 4 -4.6 22 -4.4 19 1.0 10 4.0 21 12.0 17 12.6 13 15.2 31 8.6 28 5.0 28 -4.0 29 -6.0 4 -6.6 2000 -8.0 18 -6.6 9 -5.0 4 4.4 2 7.0 10 8.2 13 16.4 4 15.6 8 13.6 12 6.4 16 -0.6 29 -2.0 29 -8.0 LOW. -17.5 24 -15.6 1 -10.5 9 -8.0 1 -1.0 1 6.4 11 10.0 21 7.5 30 2.5 13 -0.5 27 -9.5 8 -16.5 25 -17.5 YEAR 1972 1989 1985 1967 1979 1962 1967 1970 1970 1987 1973 1972 1972 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 9 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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 1961 12.6 19 14.0 8 20.0 26 28.7 28 32.8 24 37.0 20 38.7 11 36.0 7 35.0 1 28.2 1 21.4 3 16.2 3 38.7 1962 11.6 8 17.4 20 26.0 24 25.2 10 30.5 18 34.0 17 38.4 17 35.0 3 33.0 12 28.5 8 22.0 1 15.5 21 38.4 1963 16.8 27 18.8 24 21.4 25 26.0 9 27.2 25 34.5 3 38.8 18 36.0 13 34.5 4 28.2 1 20.4 1 15.0 23 38.8 1964 6.4 18 15.2 22 23.6 26 25.6 29 31.6 10 34.2 10 38.8 11 37.6 14 33.4 4 28.6 1 19.6 16 11.3 6 38.8 1965 4.4 2 14.6 28 23.0 11 26.8 27 31.4 17 33.0 28 38.5 14 37.0 14 32.4 15 25.5 19 21.0 7 18.0 15 38.5 1966 17.8 9 20.4 26 20.2 9 26.8 16 32.0 25 36.5 13 38.5 14 37.0 4 34.8 10 25.4 9 20.5 1 16.0 2 38.5 1967 ***** ** 10.5 13 ***** ** 25.0 23 31.0 28 ***** ** ***** ** 38.5 8 35.5 4 25.5 9 23.0 3 ***** ** ***** 1968 10.5 1 12.5 17 24.5 20 22.5 30 29.5 22 ***** ** 37.5 5 36.5 8 35.5 11 26.5 1 ***** ** ***** ** ***** 1969 13.8 3 14.0 28 22.8 11 27.5 27 33.5 30 34.5 4 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1970 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** 37.0 4 34.0 3 32.0 1 24.5 1 16.0 6 ***** 1971 16.5 7 17.0 21 28.0 20 24.5 27 31.0 27 36.0 15 38.5 6 37.5 27 36.5 9 26.5 8 21.0 4 15.7 1 38.5 1972 7.5 18 10.0 28 18.5 30 27.0 29 27.5 28 36.5 29 38.5 20 37.0 16 38.5 6 33.5 3 20.5 1 8.0 4 38.5 1973 7.0 13 21.0 28 24.0 2 30.5 28 35.0 27 41.5 27 42.5 29 41.5 2 36.5 1 32.0 6 26.5 2 19.0 5 42.5 1974 10.0 12 14.0 24 23.0 19 28.0 23 35.0 23 40.0 20 41.0 1 38.0 14 35.0 9 27.5 21 26.0 3 14.0 2 41.0 1975 8.0 11 13.0 23 23.0 26 29.0 7 30.5 30 37.0 20 41.0 1 38.0 1 34.0 2 30.5 11 23.0 2 11.0 21 41.0 1976 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1977 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1978 12.6 2 16.5 21 21.6 31 26.3 24 30.6 27 36.4 30 38.7 1 36.0 14 34.5 13 27.5 8 15.0 1 15.4 2 38.7 1979 ***** ** ***** ** 20.6 18 29.0 5 28.8 23 35.8 30 38.0 9 35.0 17 35.4 10 29.6 12 25.0 2 15.0 12 ***** 1980 8.0 5 11.0 17 21.0 29 27.4 22 32.0 22 35.4 21 37.5 20 36.5 24 35.0 4 30.4 4 20.8 13 17.0 5 37.5 1981 10.4 9 14.9 19 22.2 20 27.6 25 32.9 27 33.5 30 38.0 18 35.1 8 34.0 14 26.6 4 22.5 2 ***** ** ***** 1982 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1983 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1984 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1985 12.5 28 17.4 15 20.8 18 27.7 22 34.5 31 39.0 27 37.9 7 35.6 6 35.8 3 29.5 1 23.0 4 15.0 2 39.0 1986 15.6 9 18.0 28 18.2 6 22.2 15 30.0 25 37.6 30 38.2 10 37.4 1 32.6 3 30.0 3 23.0 2 11.4 29 38.2 1987 18.2 31 18.2 1 18.0 7 26.5 30 31.2 28 37.2 29 38.4 20 36.5 4 35.4 6 29.4 2 21.0 5 14.4 11 38.4 1988 9.8 26 16.4 29 21.2 20 26.0 18 33.2 28 37.0 13 37.8 3 35.4 12 35.0 10 27.4 6 23.0 8 17.5 9 37.8 1989 7.2 2 9.5 28 19.4 25 27.6 15 33.0 25 38.0 30 39.9 1 37.4 4 35.4 3 30.5 8 21.0 29 15.4 1 39.9 1990 9.0 5 13.4 19 19.4 12 29.0 27 33.0 25 37.0 27 38.0 16 38.2 5 36.0 13 28.5 4 24.2 5 19.0 3 38.2 1991 10.0 31 12.4 19 20.4 30 27.5 22 30.4 29 37.0 29 38.0 7 38.5 6 36.0 3 26.0 6 22.5 1 13.0 1 38.5 1992 6.0 2 13.0 22 18.8 29 25.0 13 30.0 30 35.7 30 39.0 3 36.2 25 32.5 25 27.5 13 20.4 1 13.0 2 39.0 1993 12.5 29 14.2 28 21.8 31 28.0 19 29.5 19 37.0 28 37.0 3 39.8 14 35.0 5 29.0 1 17.6 9 14.6 22 39.8 1994 15.6 3 14.4 27 22.0 31 29.0 22 31.4 30 34.6 16 39.0 19 38.6 1 31.8 2 24.8 14 22.0 3 12.4 3 39.0 1995 15.0 31 15.6 4 21.0 24 24.6 3 30.0 21 36.4 29 42.0 16 40.2 6 34.4 9 30.6 4 23.6 1 11.4 31 42.0 1996 12.4 1 15.8 25 21.4 31 24.4 21 32.0 31 35.6 4 36.0 3 37.0 23 35.4 16 27.0 24 20.0 2 17.4 27 37.0 1997 14.2 7 17.0 18 17.6 24 28.8 27 33.4 28 36.2 27 39.6 15 39.4 14 36.0 1 29.4 2 17.2 21 13.6 7 39.6 1998 8.6 30 16.0 7 20.0 28 29.2 15 30.4 11 37.6 28 39.0 11 38.0 17 36.0 2 30.2 1 22.6 1 17.6 1 39.0 1999 11.4 15 17.8 27 20.4 31 27.6 30 34.6 31 36.4 28 37.4 4 37.8 1 34.4 3 29.8 11 19.0 19 16.0 31 37.8 2000 16.8 1 16.6 24 19.4 30 29.4 20 33.6 26 38.2 30 38.0 1 39.2 3 36.0 8 26.4 11 20.0 3 12.0 22 39.2 HIG. 18.2 31 21.0 28 28.0 20 30.5 28 35.0 27 41.5 27 42.5 29 41.5 2 38.5 6 33.5 3 26.5 2 19.0 5 42.5 YEAR 1987 1973 1971 1973 1973 1973 1973 1973 1972 1972 1973 1973 1973 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 10 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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 1961 11.7 3 22.0 9 2.0 13 10.6 15 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 1.2 23 4.8 14 22.0 1962 4.0 23 15.4 7 2.6 10 37.2 21 5.2 15 3.0 3 0.0 ** 0.0 ** 0.0 ** 4.4 11 2.4 3 7.7 9 37.2 1963 8.0 28 5.4 28 9.6 31 17.4 30 12.8 2 0.0 ** 0.0 ** 9.4 2 0.0 ** 2.6 20 7.6 4 11.0 11 17.4 1964 4.4 19 12.6 3 3.6 6 9.0 12 0.6 29 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 9.6 23 7.0 13 12.6 1965 24.5 11 0.6 14 21.2 2 8.0 19 1.2 4 1.8 1 0.0 ** 1.0 27 2.4 30 7.8 6 3.6 18 6.6 29 24.5 1966 7.4 31 13.8 2 13.4 1 5.3 18 4.0 6 0.0 ** 0.0 ** 0.0 ** 8.2 30 10.2 10 0.0 ** 6.4 26 13.8 1967 5.2 30 6.2 22 5.1 29 6.0 25 22.8 18 0.0 ** 0.0 ** 0.0 ** 0.0 ** 4.2 12 9.2 13 8.4 3 22.8 1968 11.4 1 15.2 3 13.8 17 20.2 25 18.0 30 6.8 23 0.0 ** 0.0 ** 3.8 17 6.2 30 12.2 13 9.8 18 20.2 1969 9.4 24 5.2 19 22.2 15 10.2 4 8.2 6 0.0 ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1970 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** 9.4 26 0.0 ** 0.0 ** 0.0 ** 14.5 28 17.5 13 ***** 1971 8.5 17 12.7 14 7.0 11 23.5 3 4.3 19 0.0 ** 0.0 ** 2.0 1 0.0 ** 3.0 26 19.0 19 14.5 30 23.5 1972 11.5 7 20.0 8 20.0 18 4.0 23 20.5 9 2.4 27 0.0 ** 0.0 ** 0.0 ** 0.0 ** 15.0 4 46.0 1 46.0 1973 9.0 23 28.0 21 11.0 29 20.0 17 3.0 11 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 2.0 22 14.0 30 28.0 1974 11.0 16 22.0 19 7.0 17 16.0 1 4.0 15 5.0 12 9.0 8 0.0 ** 2.0 7 0.0 ** 3.0 24 22.0 23 22.0 1975 26.0 3 19.0 21 14.0 8 16.0 23 20.0 12 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 13.9 29 10.7 2 26.0 1976 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1977 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1978 11.8 21 9.2 23 10.5 13 7.2 19 1.0 30 2.7 21 0.0 ** 0.0 ** 0.0 ** 2.0 31 10.3 11 16.4 8 16.4 1979 ***** ** ***** ** 32.5 27 3.8 26 9.0 6 7.4 1 0.0 ** 0.0 ** 0.0 ** 2.5 24 4.3 4 33.4 16 ***** 1980 5.7 16 11.5 25 10.0 16 11.2 3 3.1 16 0.6 27 0.0 ** 0.1 11 0.0 ** 9.0 21 7.7 10 9.2 18 11.5 1981 9.8 12 9.0 20 15.2 3 10.8 1 8.2 6 7.3 23 1.6 21 0.0 ** 0.0 ** 3.3 17 11.0 30 ***** ** ***** 1982 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1983 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1984 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1985 25.0 23 17.0 2 4.0 20 4.3 28 0.2 3 0.0 ** 0.0 ** 0.2 27 0.0 ** 1.0 13 20.0 26 19.0 18 25.0 1986 1.8 23 4.3 15 9.5 24 24.4 11 22.0 3 2.0 11 0.0 ** 1.0 5 0.0 ** 2.0 4 15.0 29 21.0 20 24.4 1987 3.0 26 15.0 27 25.0 4 16.0 4 8.0 20 1.0 20 3.4 26 0.0 ** 0.2 27 22.0 8 8.4 26 16.0 13 25.0 1988 13.3 18 8.5 17 8.4 1 9.0 30 2.0 2 1.0 2 8.0 19 4.0 25 0.4 4 2.0 15 4.0 13 19.0 17 19.0 1989 9.0 12 15.0 14 20.0 10 1.1 13 8.4 7 2.6 7 0.0 ** 0.0 ** 0.0 ** 2.2 21 3.0 16 14.2 15 20.0 1990 5.0 10 18.0 10 11.0 14 6.0 2 6.0 12 0.0 ** 0.4 5 0.0 ** 0.0 ** 12.0 28 4.2 12 14.2 25 18.0 1991 5.0 14 12.0 21 41.0 25 19.2 4 12.0 24 0.1 19 0.0 ** 0.0 ** 0.0 ** 7.0 23 0.4 11 15.0 13 41.0 1992 7.6 8 10.0 25 21.0 15 18.0 27 19.4 2 3.0 8 0.8 10 0.3 29 0.0 ** 0.0 ** 7.0 8 10.0 15 21.0 1993 6.0 8 18.0 21 20.0 8 8.0 30 3.0 13 2.0 1 0.6 26 0.0 ** 0.0 ** 0.6 7 16.0 29 6.0 16 20.0 1994 8.0 17 24.0 1 7.0 12 16.0 30 18.0 1 7.0 24 0.0 ** 0.0 ** 0.3 29 3.0 30 37.0 26 3.0 1 37.0 1995 3.0 17 3.6 5 14.0 17 57.0 24 7.0 2 1.0 6 0.0 ** 0.0 ** 2.0 21 7.0 25 0.0 ** 6.0 12 57.0 1996 7.0 7 11.0 5 44.0 2 17.0 3 14.0 22 4.0 27 0.5 10 0.0 ** 0.0 ** 2.0 16 0.4 8 12.0 22 44.0 1997 6.0 16 1.0 19 12.0 30 9.0 5 3.0 20 4.0 16 0.2 6 0.0 ** 0.0 ** 1.0 13 6.0 2 13.0 10 13.0 1998 12.0 6 10.0 12 21.0 30 13.0 6 15.0 25 0.1 5 0.2 17 11.0 3 5.0 14 4.0 11 1.0 11 14.0 4 21.0 1999 14.0 10 5.0 8 9.0 17 1.0 23 0.8 14 0.0 ** 9.0 15 0.0 ** 2.0 27 10.0 27 10.0 8 10.0 10 14.0 2000 19.0 28 16.0 14 5.9 23 1.0 21 0.3 7 0.2 13 0.0 ** 0.0 ** 0.6 30 25.0 17 7.0 6 30.0 11 30.0 HIG. 26.0 3 28.0 21 44.0 2 57.0 24 22.8 18 7.4 1 9.4 26 11.0 3 8.2 30 25.0 17 37.0 26 46.0 1 57.0 YEAR 1975 1973 1996 1995 1967 1979 1970 1998 1966 2000 1994 1972 1995 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 11 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. MONTHLY TOTAL PRECIPITATION WITH SEASONAL PERCENT. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL SEASONAL-PERCENT ----------------------- 1961 35.7 37.7 3.7 29.6 0.0 0.0 0.0 0.0 0.0 0.0 1.2 8.0 115.9 66.5 25.5 0.0 7.9 1962 13.3 55.8 4.9 138.0 10.8 3.0 0.0 0.0 0.0 10.5 6.8 18.7 261.8 28.3 58.0 0.0 13.8 1963 12.6 12.0 25.6 45.5 59.2 0.0 0.0 9.6 0.0 4.6 15.3 50.6 235.0 21.4 44.6 4.1 30.0 1964 4.4 27.9 11.3 20.9 0.6 0.0 0.0 0.0 0.0 0.0 16.6 15.6 97.3 44.8 22.1 0.0 33.1 1965 105.3 1.4 35.4 18.6 4.0 5.1 0.0 1.6 5.4 26.5 13.2 10.8 227.3 62.5 12.2 3.1 22.2 1966 15.4 15.6 57.4 19.1 8.0 0.0 0.0 0.0 8.2 25.6 0.0 16.8 166.1 53.2 16.3 4.9 25.5 1967 12.5 24.0 10.1 17.2 32.6 0.0 0.0 0.0 0.0 4.2 18.2 8.4 127.2 36.6 39.2 0.0 24.2 1968 29.0 32.2 34.4 45.8 49.2 16.0 0.0 0.0 3.8 11.0 60.7 39.6 321.7 29.7 34.5 1.2 34.6 1969 43.8 13.2 98.1 30.0 20.8 0.0 ****** ****** ****** ****** ****** ****** ****** 75.3 24.7 ***** ***** 1970 ****** ****** ****** ****** ****** ****** 13.0 0.0 0.0 0.0 18.0 36.9 ****** ***** ***** 19.1 80.9 1971 20.0 27.6 17.5 78.1 10.3 0.0 0.0 3.7 0.0 4.5 40.8 27.5 230.0 28.3 38.4 1.6 31.7 1972 29.0 41.0 62.0 17.9 70.5 2.4 0.0 0.0 0.0 0.0 21.0 102.0 345.8 38.2 26.3 0.0 35.6 1973 27.0 45.5 11.0 33.5 3.0 0.0 0.0 0.0 0.0 0.0 2.0 21.0 143.0 58.4 25.5 0.0 16.1 1974 33.0 84.0 28.0 49.0 4.0 5.0 17.0 0.0 2.0 0.0 5.0 51.0 278.0 52.2 20.9 6.8 20.1 1975 41.2 69.0 27.0 38.4 43.3 0.0 0.0 0.0 0.0 0.0 33.2 52.3 304.4 45.1 26.8 0.0 28.1 1976 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1977 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1978 33.0 17.6 43.3 10.2 1.9 6.8 0.0 0.0 0.0 3.2 16.2 51.4 183.6 51.1 10.3 0.0 38.6 1979 ****** ****** 71.0 7.8 18.4 20.6 0.0 0.0 0.0 2.6 9.7 63.1 ****** 36.7 24.2 0.0 39.0 1980 32.8 54.8 47.4 25.7 8.5 0.6 0.0 0.1 0.0 18.7 21.7 21.5 231.8 58.2 15.0 0.0 26.7 1981 40.4 34.5 44.5 42.2 21.5 16.7 1.6 0.0 0.0 12.5 12.4 ****** ****** 52.8 35.5 0.7 11.0 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1984 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1985 70.0 34.2 17.8 9.6 0.2 0.0 0.0 0.3 0.0 1.1 30.1 42.5 205.8 59.3 4.8 0.1 35.8 1986 3.5 15.6 46.5 58.3 60.2 2.7 0.0 1.3 0.0 6.9 39.3 31.0 265.3 24.7 45.7 0.5 29.1 1987 4.8 45.2 93.7 25.7 19.2 1.0 4.1 0.0 0.2 97.3 8.4 34.4 334.0 43.0 13.7 1.3 41.9 1988 53.2 25.4 30.0 29.8 3.4 1.3 18.0 4.1 0.5 3.4 8.1 33.1 210.3 51.6 16.4 10.7 21.2 1989 30.3 34.9 71.3 1.1 9.9 2.6 0.0 0.0 0.0 3.2 5.1 42.6 201.0 67.9 6.8 0.0 25.3 1990 25.8 40.4 20.3 13.2 7.8 0.0 0.4 0.0 0.0 23.0 6.2 17.6 154.7 55.9 13.6 0.3 30.3 1991 17.6 35.3 99.1 38.1 17.3 0.1 0.0 0.0 0.0 7.6 0.4 49.8 265.3 57.3 20.9 0.0 21.8 1992 30.0 33.3 75.1 42.1 64.1 13.7 0.8 0.3 0.0 0.0 7.9 26.2 293.5 47.2 40.9 0.4 11.6 1993 14.6 55.3 46.7 20.2 8.9 2.1 0.8 0.0 0.0 0.7 85.9 16.2 251.4 46.4 12.4 0.3 40.9 1994 41.3 36.7 16.5 31.2 40.0 9.0 0.0 0.0 0.4 10.2 144.6 9.0 338.9 27.9 23.7 0.1 48.3 1995 3.7 15.3 31.3 74.7 30.4 2.2 0.0 0.0 2.5 7.1 0.0 14.3 181.5 27.7 59.1 1.4 11.8 1996 30.4 52.4 119.1 56.4 35.1 4.7 0.7 0.0 0.0 3.1 0.4 12.6 314.9 64.1 30.5 0.2 5.1 1997 9.1 2.2 36.6 16.0 6.0 7.2 0.2 0.0 0.0 1.8 21.8 41.8 142.7 33.6 20.5 0.1 45.8 1998 45.7 27.3 57.0 56.5 26.4 0.1 0.2 14.0 5.4 5.0 3.4 24.1 265.1 49.0 31.3 7.4 12.3 1999 37.3 7.3 26.2 3.2 1.3 0.0 18.0 0.0 2.0 17.3 43.7 25.6 181.9 38.9 2.5 11.0 47.6 2000 34.1 31.0 15.9 3.4 0.3 0.2 0.0 0.0 1.0 52.1 24.0 78.0 240.0 33.8 1.6 0.4 64.2 MEAN 29.7 32.9 42.2 33.7 20.5 3.6 2.2 1.0 0.9 10.7 21.8 33.2 232.4 45.1 24.9 1.8 28.2 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 12 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. NO. OF DAYS WITH PRECIPITATION YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 7 6 4 9 0 0 0 0 0 0 1 5 32 1962 6 9 3 16 6 1 0 0 0 6 6 8 61 1963 5 5 9 15 17 0 0 2 0 3 3 10 69 1964 1 6 8 9 1 0 0 0 0 0 4 3 32 1965 12 3 5 6 4 4 0 2 3 11 6 3 59 1966 6 2 8 8 3 0 0 0 1 5 0 4 37 1967 3 9 3 5 4 0 0 0 0 1 2 1 28 1968 3 4 3 3 7 4 0 0 1 2 9 7 43 1969 7 3 15 5 4 0 *** *** *** *** *** *** *** 1970 *** *** *** *** *** *** 3 0 0 0 3 5 *** 1971 5 7 6 10 9 0 1 2 0 2 8 4 54 1972 8 3 6 6 9 1 0 2 0 0 3 8 46 1973 5 6 3 7 3 0 0 0 0 0 1 4 29 1974 5 6 6 7 1 1 4 0 1 0 2 4 37 1975 5 7 4 6 7 0 0 0 0 0 7 14 50 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** *** *** *** *** *** *** *** *** *** *** *** 1978 8 6 8 7 2 4 0 0 0 2 3 10 50 1979 *** *** 10 8 14 10 0 0 0 2 7 11 *** 1980 12 13 14 14 6 1 1 1 1 10 10 5 88 1981 10 11 17 12 11 12 2 1 1 8 8 *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 *** *** *** *** *** *** *** *** *** *** *** *** *** 1985 12 7 8 8 1 0 0 2 0 2 6 11 57 1986 4 8 10 10 11 2 0 2 0 7 10 6 70 1987 4 8 10 6 7 1 2 0 1 14 1 8 62 1988 10 8 8 11 3 2 5 2 2 2 7 7 67 1989 8 7 12 1 3 1 0 0 0 2 2 10 46 1990 12 12 7 6 2 0 1 0 0 6 2 4 52 1991 12 11 13 4 4 1 0 0 0 2 1 12 60 1992 9 8 12 12 12 10 1 1 0 0 3 9 77 1993 8 11 9 5 8 2 2 0 0 2 14 5 66 1994 9 7 7 7 8 4 0 0 2 7 12 5 68 1995 2 9 9 8 13 3 0 0 2 2 0 6 54 1996 12 13 16 12 13 4 2 0 0 3 1 3 79 1997 4 3 10 9 5 5 1 0 0 2 10 9 58 1998 9 9 10 10 9 1 1 3 2 2 5 4 65 1999 9 4 7 5 3 0 3 0 1 4 6 7 49 2000 9 4 5 5 1 1 0 0 2 10 7 12 56 MEAN 7 7 8 8 6 2 1 1 1 4 5 7 57 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 13 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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 1961 6 5 2 6 0 0 0 0 0 0 1 3 23 1962 5 6 2 14 4 1 0 0 0 3 3 5 43 1963 3 3 6 8 11 0 0 1 0 2 3 8 45 1964 1 4 5 4 0 0 0 0 0 0 3 3 20 1965 11 0 5 4 2 3 0 1 3 8 5 2 44 1966 4 2 8 8 3 0 0 0 1 5 0 4 35 1967 3 7 3 5 4 0 0 0 0 1 2 1 26 1968 3 4 3 3 7 4 0 0 1 2 9 7 43 1969 7 3 15 5 4 0 *** *** *** *** *** *** *** 1970 *** *** *** *** *** *** 2 0 0 0 2 3 *** 1971 4 5 5 10 4 0 0 2 0 2 5 4 41 1972 7 3 5 6 9 1 0 0 0 0 3 8 42 1973 5 5 1 3 1 0 0 0 0 0 1 4 20 1974 5 6 6 7 1 1 4 0 1 0 2 4 37 1975 5 7 4 6 5 0 0 0 0 0 7 11 45 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** *** *** *** *** *** *** *** *** *** *** *** 1978 6 4 8 2 1 3 0 0 0 2 3 8 37 1979 *** *** 8 2 5 5 0 0 0 1 3 7 *** 1980 8 9 10 7 3 0 0 0 0 4 7 3 51 1981 6 7 9 9 5 5 1 0 0 5 2 *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 *** *** *** *** *** *** *** *** *** *** *** *** *** 1985 10 6 7 3 0 0 0 0 0 1 4 8 39 1986 2 6 8 9 6 1 0 1 0 5 7 4 49 1987 2 7 10 4 5 1 1 0 0 10 1 5 46 1988 9 7 5 9 2 1 3 1 0 2 3 4 46 1989 7 4 10 1 2 1 0 0 0 2 2 8 37 1990 9 6 3 5 2 0 0 0 0 5 2 3 35 1991 5 8 10 3 3 0 0 0 0 1 0 6 36 1992 6 7 11 9 10 6 0 0 0 0 1 7 57 1993 7 7 6 5 4 1 0 0 0 0 11 5 46 1994 8 5 5 4 5 2 0 0 0 4 9 3 45 1995 1 5 5 6 7 1 0 0 1 1 0 4 31 1996 10 10 9 9 6 1 0 0 0 1 0 1 47 1997 3 2 8 3 2 2 0 0 0 1 8 6 35 1998 7 6 7 6 3 0 0 3 1 2 2 3 40 1999 5 2 6 1 0 0 3 0 1 3 5 6 32 2000 5 4 4 2 0 0 0 0 0 7 7 9 38 MEAN 6 5 6 6 4 1 0 0 0 2 4 5 39 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 14 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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 1961 2 1 0 1 0 0 0 0 0 0 0 0 4 1962 0 3 0 5 0 0 0 0 0 0 0 0 8 1963 0 0 0 1 2 0 0 0 0 0 0 2 5 1964 0 1 0 0 0 0 0 0 0 0 0 0 1 1965 4 0 1 0 0 0 0 0 0 0 0 0 5 1966 0 1 2 0 0 0 0 0 0 1 0 0 4 1967 0 0 0 0 1 0 0 0 0 0 0 0 1 1968 1 2 2 2 2 0 0 0 0 0 1 0 10 1969 0 0 2 1 0 0 *** *** *** *** *** *** *** 1970 *** *** *** *** *** *** 0 0 0 0 1 2 *** 1971 0 1 0 3 0 0 0 0 0 0 2 1 7 1972 1 2 3 0 2 0 0 0 0 0 1 3 12 1973 0 1 1 2 0 0 0 0 0 0 0 1 5 1974 1 4 0 2 0 0 0 0 0 0 0 2 9 1975 1 3 1 1 1 0 0 0 0 0 1 1 9 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** *** *** *** *** *** *** *** *** *** *** *** 1978 1 0 2 0 0 0 0 0 0 0 1 1 5 1979 *** *** 2 0 0 0 0 0 0 0 0 2 *** 1980 0 2 2 1 0 0 0 0 0 0 0 0 5 1981 0 0 1 1 0 0 0 0 0 0 1 *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 *** *** *** *** *** *** *** *** *** *** *** *** *** 1985 2 2 0 0 0 0 0 0 0 0 1 1 6 1986 0 0 0 1 3 0 0 0 0 0 2 1 7 1987 0 1 4 1 0 0 0 0 0 4 0 1 11 1988 1 0 0 0 0 0 0 0 0 0 0 1 2 1989 0 1 2 0 0 0 0 0 0 0 0 1 4 1990 0 1 1 0 0 0 0 0 0 1 0 1 4 1991 0 1 4 2 1 0 0 0 0 0 0 2 10 1992 0 1 2 1 2 0 0 0 0 0 0 1 7 1993 0 3 2 0 0 0 0 0 0 0 3 0 8 1994 0 1 0 1 1 0 0 0 0 0 6 0 9 1995 0 0 2 1 0 0 0 0 0 0 0 0 3 1996 0 2 3 2 1 0 0 0 0 0 0 1 9 1997 0 0 1 0 0 0 0 0 0 0 0 2 3 1998 2 1 2 3 1 0 0 1 0 0 0 1 11 1999 1 0 0 0 0 0 0 0 0 1 2 1 5 2000 1 2 0 0 0 0 0 0 0 2 0 3 8 MEAN 1 1 1 1 1 0 0 0 0 0 1 1 7 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 15 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 03 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 88 78 76 66 54 46 55 60 69 68 61 67 66 1962 81 68 54 72 61 54 51 59 56 59 76 77 64 1963 71 63 64 68 73 58 60 71 62 66 71 80 67 1964 *** 73 66 65 44 56 63 63 62 54 65 89 *** 1965 93 79 73 61 55 61 65 51 65 74 67 65 67 1966 64 62 68 60 56 47 58 45 55 69 57 63 59 1967 72 76 62 56 45 26 30 37 54 68 59 72 55 1968 73 76 71 69 68 65 49 48 48 73 75 69 65 1969 87 80 75 60 45 61 *** *** *** *** *** *** *** 1970 *** *** *** *** *** *** *** 81 82 80 82 87 *** 1971 84 85 77 83 84 59 52 60 56 64 79 75 72 1972 85 83 75 67 80 72 61 63 57 55 65 82 70 1973 88 75 58 53 58 58 59 51 64 49 60 72 62 1974 85 85 78 65 64 64 66 60 66 56 64 80 69 1975 84 82 76 67 74 71 66 74 68 65 61 56 70 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** *** *** *** *** *** *** *** *** *** *** *** 1978 78 77 67 61 65 60 53 62 52 65 75 83 67 1979 *** *** 76 59 69 65 50 47 49 60 55 82 *** 1980 88 89 81 59 63 51 44 62 52 72 82 79 69 1981 83 80 76 72 66 67 59 60 52 71 57 *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 *** *** *** *** *** *** *** *** *** *** *** *** *** 1985 83 72 76 64 51 54 60 55 46 58 78 78 65 1986 72 76 81 82 76 63 53 56 51 65 79 81 70 1987 67 75 74 66 66 52 52 56 67 80 68 79 67 1988 85 82 68 74 66 55 64 64 65 65 61 68 68 1989 83 84 77 55 63 61 62 53 58 56 70 81 67 1990 82 83 72 65 59 54 57 65 54 65 60 72 66 1991 83 77 81 71 64 61 51 56 62 67 72 86 69 1992 82 75 80 75 79 69 58 61 63 51 63 76 69 1993 73 73 70 65 67 56 61 59 59 65 88 79 68 1994 81 76 69 69 64 57 64 67 59 75 79 80 70 1995 71 70 62 69 65 63 63 58 55 68 50 78 64 1996 85 85 83 75 71 63 61 54 57 63 68 65 69 1997 67 67 72 57 59 55 66 50 57 54 77 81 64 1998 86 74 76 69 71 48 60 61 63 63 63 74 67 1999 79 60 68 63 56 50 62 48 69 57 79 81 64 2000 74 71 58 53 54 55 46 50 65 70 79 82 63 MEAN 80 76 72 66 63 58 57 58 59 64 69 76 67 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 16 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 09 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 76 60 44 41 26 18 19 26 24 27 35 47 37 1962 63 52 29 44 29 24 18 33 20 29 40 49 36 1963 48 43 34 36 38 23 24 25 21 31 44 68 36 1964 *** 53 36 33 17 20 23 21 21 25 34 67 *** 1965 87 63 38 32 24 25 24 23 28 43 37 47 39 1966 41 44 43 31 30 19 23 21 28 46 29 45 33 1967 49 55 24 27 29 15 18 24 26 45 29 41 32 1968 54 71 45 45 40 24 25 22 31 48 37 55 41 1969 84 68 47 31 29 25 *** *** *** *** *** *** *** 1970 *** *** *** *** *** *** *** 67 73 71 75 84 *** 1971 74 79 67 71 73 40 32 39 42 47 70 63 58 1972 88 83 68 46 54 52 28 27 28 26 39 78 51 1973 82 61 46 39 31 26 34 30 *** 28 33 54 *** 1974 90 89 78 66 56 61 52 39 47 40 46 71 61 1975 78 80 65 64 64 72 59 67 54 31 51 62 62 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** *** *** *** *** *** *** *** *** *** *** *** 1978 56 50 45 31 30 27 24 21 18 27 46 56 36 1979 *** *** 47 32 36 27 21 21 23 26 32 62 *** 1980 70 75 47 34 32 22 19 24 21 37 49 44 40 1981 61 51 44 41 36 28 25 25 19 37 29 *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 *** *** *** *** *** *** *** *** *** *** *** *** *** 1985 70 42 48 28 20 21 24 24 17 27 51 58 36 1986 44 51 59 56 46 31 22 25 20 34 57 63 42 1987 42 53 51 37 37 22 23 23 28 54 41 57 39 1988 67 59 41 41 27 19 29 30 30 33 34 53 39 1989 64 65 57 33 30 23 25 22 29 28 41 60 40 1990 69 66 40 33 25 20 25 27 19 32 32 49 36 1991 67 60 66 41 31 25 23 22 25 35 43 65 42 1992 65 54 54 45 53 32 25 29 22 26 38 54 41 1993 56 58 47 39 34 31 31 29 28 34 73 62 44 1994 66 56 44 43 35 28 28 25 30 44 57 56 43 1995 48 48 37 42 42 28 27 22 25 37 26 59 37 1996 74 70 65 46 40 30 29 29 27 35 38 42 44 1997 46 36 44 35 31 27 28 20 25 30 55 67 37 1998 72 57 49 41 38 20 26 30 31 33 39 51 41 1999 56 38 43 31 21 21 33 21 31 32 56 60 37 2000 53 49 34 27 21 20 20 21 27 46 56 69 37 MEAN 64 59 48 40 35 28 27 28 28 36 44 58 41 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 17 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 15 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 86 67 48 49 36 24 24 31 33 45 51 54 46 1962 68 59 35 56 39 28 27 33 34 45 55 63 45 1963 57 46 41 43 48 28 26 28 34 49 60 78 45 1964 *** 60 47 36 24 24 25 26 35 45 54 79 *** 1965 94 69 50 41 32 28 30 31 43 58 55 57 49 1966 53 53 54 41 38 27 29 28 35 54 38 44 41 1967 60 61 33 32 30 20 23 31 35 58 55 57 41 1968 75 81 59 57 59 48 50 35 41 72 75 69 60 1969 81 73 58 40 31 28 *** *** *** *** *** *** *** 1970 *** *** *** *** *** *** *** 81 88 89 90 95 *** 1971 90 86 78 84 84 54 50 51 58 60 74 67 70 1972 80 85 73 64 77 68 55 56 53 51 62 78 67 1973 89 74 55 48 51 46 51 43 50 45 47 69 56 1974 89 89 79 62 62 60 60 51 55 51 50 83 66 1975 83 72 65 69 75 72 63 63 58 51 57 61 66 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** *** *** *** *** *** *** *** *** *** *** *** 1978 70 56 44 28 30 24 24 21 21 37 54 62 39 1979 *** *** 53 37 39 28 20 25 29 38 44 74 *** 1980 80 82 51 36 32 23 22 24 25 45 61 63 45 1981 68 60 46 47 38 31 25 25 26 51 39 *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 *** *** *** *** *** *** *** *** *** *** *** *** *** 1985 78 51 53 37 28 24 25 26 20 35 60 69 42 1986 55 59 64 57 53 27 21 24 23 42 64 71 47 1987 47 54 52 40 38 23 23 21 28 62 51 66 42 1988 77 60 39 44 28 22 26 27 28 40 45 57 41 1989 71 70 58 28 28 20 21 22 27 32 46 68 41 1990 73 64 42 32 26 16 21 21 18 40 39 54 37 1991 71 60 62 39 31 21 20 21 24 38 48 75 43 1992 72 63 62 46 53 31 25 25 22 37 48 67 46 1993 61 61 48 37 40 29 29 28 29 43 79 73 46 1994 69 56 46 43 38 27 24 22 32 51 64 65 45 1995 50 47 38 45 43 28 18 18 27 41 32 66 38 1996 77 71 67 48 39 27 28 30 25 40 44 51 46 1997 50 33 44 36 31 23 20 17 24 35 61 72 37 1998 74 61 46 41 39 21 24 26 29 38 47 60 42 1999 60 40 41 30 22 16 29 22 29 35 59 69 38 2000 59 50 32 27 19 18 18 19 25 50 59 77 38 MEAN 71 63 52 44 41 30 30 31 34 47 55 67 47 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 18 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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 1961 14 7 3 0 0 0 0 0 0 0 2 0 26 1962 8 2 0 0 0 0 0 0 0 0 1 2 13 1963 1 3 3 0 0 0 0 0 0 0 0 9 16 1964 29 3 1 0 0 0 0 0 0 0 3 14 50 1965 21 11 3 0 0 0 0 0 0 0 0 5 40 1966 1 0 0 0 0 0 0 0 0 0 0 7 8 1967 24 16 7 1 0 0 0 0 0 0 1 21 70 1968 26 16 0 0 0 0 0 0 0 0 3 18 63 1969 31 16 6 0 0 0 *** *** *** *** *** *** *** 1970 *** *** *** *** *** *** *** 0 0 0 0 4 *** 1971 14 7 0 0 0 0 0 0 0 0 0 7 28 1972 27 24 4 0 0 0 0 0 0 0 0 18 73 1973 29 8 3 0 0 0 0 0 0 0 13 24 77 1974 29 23 5 1 0 0 0 0 0 0 0 24 82 1975 23 13 9 0 0 0 0 0 0 0 2 23 70 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** *** *** *** *** *** *** *** *** *** *** *** 1978 12 7 0 0 0 0 0 0 0 0 7 2 28 1979 *** *** 7 0 0 0 0 0 0 0 1 10 *** 1980 19 10 3 0 0 0 0 0 0 0 0 4 36 1981 11 3 0 1 0 0 0 0 0 0 0 *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 *** *** *** *** *** *** *** *** *** *** *** *** *** 1985 15 8 11 0 0 0 0 0 0 0 0 3 37 1986 9 4 5 0 0 0 0 0 0 0 0 12 30 1987 2 1 0 0 0 0 0 0 0 0 0 3 6 1988 11 7 0 0 0 0 0 0 0 0 1 4 23 1989 25 26 0 0 0 0 0 0 0 0 0 0 51 1990 17 11 4 0 0 0 0 0 0 0 0 9 41 1991 7 11 3 0 0 0 0 0 0 0 0 12 33 1992 20 9 9 0 0 0 0 0 0 0 2 2 42 1993 17 7 1 0 0 0 0 0 0 0 2 1 28 1994 0 7 0 0 0 0 0 0 0 0 0 9 16 1995 3 1 0 0 0 0 0 0 0 0 1 4 9 1996 15 3 2 0 0 0 0 0 0 0 0 0 20 1997 4 11 3 0 0 0 0 0 0 0 0 1 19 1998 16 8 2 0 0 0 0 0 0 0 0 0 26 1999 5 1 1 0 0 0 0 0 0 0 1 2 10 2000 9 7 2 0 0 0 0 0 0 0 0 0 18 MEAN 15 9 3 0 0 0 0 0 0 0 1 8 36 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 19 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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 1961 0 0 0 0 0 1 5 0 1 0 0 0 7 1962 0 0 0 0 0 0 5 2 0 0 0 0 7 1963 0 0 0 0 0 0 4 0 0 0 0 0 4 1964 0 0 0 0 0 3 2 2 0 0 0 0 7 1965 0 0 0 0 0 0 1 2 0 0 0 0 3 1966 0 0 0 0 0 2 2 6 0 0 0 0 10 1967 0 0 0 0 0 8 18 17 0 0 0 0 43 1968 0 0 0 0 0 0 5 4 0 0 0 0 9 1969 0 0 0 0 0 0 *** *** *** *** *** *** *** 1970 *** *** *** *** *** *** *** 0 0 0 0 0 *** 1971 0 0 0 0 0 0 4 0 0 0 0 0 4 1972 0 0 0 0 0 1 1 1 0 0 0 0 3 1973 0 0 0 0 0 0 2 2 0 0 0 0 4 1974 0 0 0 0 0 0 2 0 0 0 0 0 2 1975 0 0 0 0 0 1 3 1 0 0 0 0 5 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** *** *** *** *** *** *** *** *** *** *** *** 1978 0 0 0 0 0 0 3 0 0 0 0 0 3 1979 *** *** 0 0 0 0 9 0 0 0 0 0 *** 1980 0 0 0 0 0 0 3 2 0 0 0 0 5 1981 0 0 0 0 0 0 6 4 0 0 0 *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 *** *** *** *** *** *** *** *** *** *** *** *** *** 1985 0 0 0 0 0 2 6 1 0 0 0 0 9 1986 0 0 0 0 0 3 9 6 0 0 0 0 18 1987 0 0 0 0 0 2 8 7 0 0 0 0 17 1988 0 0 0 0 0 1 6 4 0 0 0 0 11 1989 0 0 0 0 0 0 7 12 4 0 0 0 23 1990 0 0 0 0 0 3 11 6 1 0 0 0 21 1991 0 0 0 0 0 0 10 7 2 0 0 0 19 1992 0 0 0 0 0 0 11 4 0 0 0 0 15 1993 0 0 0 0 0 2 5 10 1 0 0 0 18 1994 0 0 0 0 0 1 2 2 0 0 0 0 5 1995 0 0 0 0 0 0 6 10 2 0 0 0 18 1996 0 0 0 0 0 4 9 9 0 0 0 0 22 1997 0 0 0 0 1 7 7 15 1 0 0 0 31 1998 0 0 0 0 0 12 6 9 1 0 0 0 28 1999 0 0 0 0 1 4 5 21 0 0 0 0 31 2000 0 0 0 0 0 3 12 15 4 0 0 0 34 MEAN 0 0 0 0 0 2 6 5 1 0 0 0 14 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 20 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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 1961 1 1 0 0 0 0 0 0 0 0 0 0 2 1962 0 0 0 0 0 0 0 0 0 0 0 0 0 1963 0 0 0 0 0 0 0 0 0 0 0 8 8 1964 21 0 0 0 0 0 0 0 0 0 0 1 22 1965 8 3 0 0 0 0 0 0 0 0 0 0 11 1966 0 0 0 0 0 0 0 0 0 0 0 0 0 1967 *** 0 *** 0 0 *** *** 0 0 0 0 *** *** 1968 0 1 0 0 0 *** 0 0 0 0 *** *** *** 1969 14 4 0 0 0 0 *** *** *** *** *** *** *** 1970 *** *** *** *** *** *** *** 0 0 0 0 0 *** 1971 0 0 0 0 0 0 0 0 0 0 0 1 1 1972 20 13 0 0 0 0 0 0 0 0 0 8 41 1973 12 0 0 0 0 0 0 0 0 0 0 0 12 1974 0 4 0 0 0 0 0 0 0 0 0 6 10 1975 1 1 0 0 0 0 0 0 0 0 0 3 5 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** *** *** *** *** *** *** *** *** *** *** *** 1978 5 0 0 0 0 0 0 0 0 0 0 0 5 1979 *** *** 0 0 0 0 0 0 0 0 0 0 *** 1980 9 3 0 0 0 0 0 0 0 0 0 0 12 1981 1 0 0 0 0 0 0 0 0 0 0 *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 *** *** *** *** *** *** *** *** *** *** *** *** *** 1985 2 0 3 0 0 0 0 0 0 0 0 0 5 1986 1 0 0 0 0 0 0 0 0 0 0 0 1 1987 0 0 0 0 0 0 0 0 0 0 0 1 1 1988 1 0 0 0 0 0 0 0 0 0 0 1 2 1989 12 15 0 0 0 0 0 0 0 0 0 0 27 1990 4 3 1 0 0 0 0 0 0 0 0 4 12 1991 0 2 1 0 0 0 0 0 0 0 0 1 4 1992 13 2 0 0 0 0 0 0 0 0 0 2 17 1993 7 0 0 0 0 0 0 0 0 0 0 0 7 1994 0 1 0 0 0 0 0 0 0 0 0 2 3 1995 0 0 0 0 0 0 0 0 0 0 0 1 1 1996 8 1 0 0 0 0 0 0 0 0 0 0 9 1997 0 0 0 0 0 0 0 0 0 0 0 0 0 1998 6 3 0 0 0 0 0 0 0 0 0 0 9 1999 0 0 0 0 0 0 0 0 0 0 0 0 0 2000 1 0 0 0 0 0 0 0 0 0 0 0 1 MEAN 5 2 0 0 0 0 0 0 0 0 0 1 8 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 21 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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 1961 0 0 0 0 13 26 31 30 13 0 0 0 113 1962 0 0 0 0 1 19 31 29 13 0 0 0 93 1963 0 0 0 0 0 21 31 31 22 0 0 0 105 1964 0 0 0 0 8 28 31 29 13 0 0 0 109 1965 0 0 0 0 9 28 31 29 10 0 0 0 107 1966 0 0 0 0 3 30 31 31 13 0 0 0 108 1967 *** 0 *** 0 5 *** *** 31 15 0 0 *** *** 1968 0 0 0 0 0 *** 17 30 13 0 *** *** *** 1969 0 0 0 0 4 29 *** *** *** *** *** *** *** 1970 *** *** *** *** *** *** *** 28 14 2 0 0 *** 1971 0 0 0 0 5 21 30 29 14 0 0 0 99 1972 0 0 0 0 0 18 30 24 25 7 0 0 104 1973 0 0 0 2 8 25 31 31 24 7 0 0 128 1974 0 0 0 0 20 29 31 30 23 0 0 0 133 1975 0 0 0 0 3 30 31 31 26 4 0 0 125 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** *** *** *** *** *** *** *** *** *** *** *** 1978 0 0 0 0 6 21 29 31 25 0 0 0 112 1979 *** *** 0 0 0 17 31 28 17 0 0 0 *** 1980 0 0 0 0 6 22 31 30 14 1 0 0 104 1981 0 0 0 0 2 12 29 31 17 0 0 *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 *** *** *** *** *** *** *** *** *** *** *** *** *** 1985 0 0 0 0 6 26 30 27 23 0 0 0 112 1986 0 0 0 0 1 17 30 28 22 1 0 0 99 1987 0 0 0 0 5 30 29 29 14 0 0 0 107 1988 0 0 0 0 6 27 29 29 15 0 0 0 106 1989 0 0 0 0 8 27 31 31 17 4 0 0 118 1990 0 0 0 0 8 30 30 31 29 0 0 0 128 1991 0 0 0 0 1 22 31 31 16 0 0 0 101 1992 0 0 0 0 1 16 30 25 8 0 0 0 80 1993 0 0 0 0 0 21 31 30 20 0 0 0 102 1994 0 0 0 0 4 22 31 31 6 0 0 0 94 1995 0 0 0 0 1 22 31 31 18 1 0 0 104 1996 0 0 0 0 4 22 31 29 23 0 0 0 109 1997 0 0 0 0 6 25 31 31 14 0 0 0 107 1998 0 0 0 0 4 29 31 30 18 1 0 0 113 1999 0 0 0 0 10 28 25 31 18 0 0 0 112 2000 0 0 0 0 13 24 31 31 22 0 0 0 121 MEAN 0 0 0 0 5 24 30 30 17 1 0 0 107 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 22 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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 1961 0 0 0 0 0 0 0 0 0 0 0 0 0 1962 0 0 0 0 0 0 0 0 0 0 0 0 0 1963 0 0 0 0 0 0 0 0 0 0 0 0 0 1964 0 0 0 0 0 0 0 0 0 0 0 0 0 1965 0 0 0 0 0 0 0 0 0 0 0 0 0 1966 0 0 0 0 0 0 0 0 0 0 0 0 0 1967 *** 0 *** 0 0 *** *** 0 0 0 0 *** *** 1968 0 0 0 0 0 *** 0 0 0 0 *** *** *** 1969 0 0 0 0 0 0 *** *** *** *** *** *** *** 1970 *** *** *** *** *** *** *** 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 3 7 2 0 0 0 0 12 1974 0 0 0 0 0 1 3 0 0 0 0 0 4 1975 0 0 0 0 0 0 12 0 0 0 0 0 12 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** *** *** *** *** *** *** *** *** *** *** *** 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 *** 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 *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 *** *** *** *** *** *** *** *** *** *** *** *** *** 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 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 0 0 1995 0 0 0 0 0 0 1 1 0 0 0 0 2 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 MEAN 0 0 0 0 0 0 1 0 0 0 0 0 1 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 23 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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 1961 0 0 0 0 0 0 0 0 0 0 0 0 0 1962 0 0 0 0 0 0 0 0 0 0 0 0 0 1963 0 0 0 0 0 0 0 0 0 0 0 0 0 1964 0 0 0 0 0 0 0 0 0 0 0 0 0 1965 0 0 0 0 0 0 0 0 0 0 0 0 0 1966 0 0 0 0 0 0 0 0 0 0 0 0 0 1967 *** 0 *** 0 0 *** *** 0 0 0 0 *** *** 1968 0 0 0 0 0 *** 0 0 0 0 *** *** *** 1969 0 0 0 0 0 0 *** *** *** *** *** *** *** 1970 *** *** *** *** *** *** *** 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 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** *** *** *** *** *** *** *** *** *** *** *** 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 *** 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 *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 *** *** *** *** *** *** *** *** *** *** *** *** *** 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 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 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 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 24 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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 -------------- 1961 26 19 15 1 0 0 0 0 0 0 9 11 81 11 14 4 17 1962 24 12 2 0 0 0 0 0 0 0 17 16 71 11 11 3 12 1963 11 10 7 0 0 0 0 0 0 0 6 23 57 11 21 3 21 1964 30 17 3 5 0 0 0 0 0 0 4 29 88 11 12 4 24 1965 31 17 9 0 0 0 0 0 0 0 1 17 75 11 11 3 18 1966 5 7 6 0 0 0 0 0 0 0 8 26 52 11 14 3 24 1967 28 27 20 2 0 0 0 0 0 0 11 31 119 11 14 4 3 1968 31 20 9 0 0 0 0 0 0 0 14 31 105 11 11 3 28 1969 31 21 12 2 0 0 *** *** *** *** *** *** *** 1 1 4 6 1970 *** *** *** *** *** *** *** 0 0 0 0 23 *** 12 1 12 31 1971 25 18 6 2 0 0 0 0 0 0 2 17 70 11 5 4 4 1972 30 28 20 0 0 0 0 0 0 0 7 31 116 11 9 3 28 1973 31 16 13 1 0 0 0 0 0 0 19 31 111 11 6 4 13 1974 31 25 16 5 0 0 0 0 0 0 4 30 111 11 23 4 14 1975 31 21 17 0 0 0 0 0 0 0 15 31 115 11 5 3 31 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1977 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1978 28 20 8 2 0 0 0 0 0 0 20 10 88 11 3 4 16 1979 *** *** 11 1 1 0 0 0 0 0 11 26 *** 11 20 5 1 1980 30 25 10 1 0 0 0 0 0 0 2 21 89 11 26 4 18 1981 24 20 5 3 0 0 0 0 0 0 9 *** *** 11 7 4 3 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1984 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1985 23 20 14 0 0 0 0 0 0 0 0 15 72 12 4 3 14 1986 25 13 21 0 0 0 0 0 0 0 6 22 87 11 12 3 28 1987 22 11 7 3 0 0 0 0 0 1 4 12 60 10 27 4 21 1988 22 22 8 3 0 0 0 0 0 0 7 13 75 11 15 4 6 1989 31 28 4 0 0 0 0 0 0 0 1 11 75 11 22 3 31 1990 26 24 9 1 0 0 0 0 0 0 1 14 75 11 14 4 3 1991 26 18 7 0 0 0 0 0 0 0 2 21 74 11 24 3 21 1992 28 24 17 1 2 0 0 0 0 0 3 15 90 11 26 5 5 1993 27 18 10 0 0 0 0 0 0 0 10 12 77 11 12 3 24 1994 19 17 3 0 0 0 0 0 0 0 1 17 57 11 10 3 17 1995 16 11 1 0 0 0 0 0 0 0 7 28 63 11 12 3 6 1996 23 13 11 2 0 0 0 0 0 0 3 9 61 11 12 4 5 1997 15 22 11 2 0 0 0 0 0 0 0 15 65 12 11 4 13 1998 24 19 10 0 0 0 0 0 0 0 0 2 55 12 5 3 26 1999 18 7 5 0 0 0 0 0 0 0 7 8 45 11 2 3 19 2000 20 20 10 0 0 0 0 0 0 0 3 11 64 11 11 3 27 MEAN 25 18 10 1 0 0 0 0 0 0 6 19 79 10 27 5 5 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 25 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. AVERAGE OF DRY BULB TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 0.6 3.5 6.6 13.4 22.3 26.0 28.2 25.5 21.8 14.6 9.0 6.6 14.8 1962 2.9 5.9 11.9 12.7 19.6 24.0 28.1 24.1 20.9 16.1 7.5 5.2 14.9 1963 6.5 7.7 8.7 15.0 16.8 24.3 27.4 26.1 23.1 17.1 8.5 1.4 15.2 1964 -6.0 3.8 10.6 12.3 21.3 25.9 28.0 26.7 21.8 14.1 8.5 -0.1 13.9 1965 -2.1 2.3 9.0 13.1 21.2 24.7 27.0 27.4 21.5 15.2 11.0 5.4 14.7 1966 7.6 7.9 8.7 15.1 20.7 27.4 27.7 28.3 22.7 15.8 10.6 5.3 16.5 1967 2.1 1.1 7.7 14.3 21.1 26.5 30.4 29.4 22.7 15.8 10.9 3.9 15.5 1968 1.4 3.5 10.0 14.4 20.5 25.8 29.0 28.0 23.4 16.0 11.3 3.4 15.6 1969 -3.8 1.4 7.8 13.2 21.0 24.7 ****** ****** ****** ****** ****** ****** ****** 1970 ****** ****** ****** ****** ****** ****** ****** 27.4 23.3 19.0 14.1 4.3 ****** 1971 2.6 4.7 12.4 14.4 22.2 24.3 28.7 27.5 24.1 17.5 11.8 5.9 16.3 1972 -3.3 -1.9 7.5 16.9 17.1 23.8 27.2 24.4 22.7 20.0 10.7 -0.5 13.7 1973 -3.0 6.1 9.5 14.7 19.9 24.9 26.4 27.3 ****** 19.2 8.7 3.4 ****** 1974 -2.0 -1.7 7.2 12.9 20.1 23.8 25.6 24.9 21.6 15.4 11.0 -0.4 13.2 1975 -0.3 1.5 6.8 15.2 17.4 26.1 29.0 26.8 22.3 15.5 7.3 0.2 14.0 1976 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1977 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1978 1.9 5.0 9.4 14.8 19.3 23.3 27.5 26.4 24.3 17.2 4.4 5.5 14.9 1979 ****** ****** 7.1 15.8 17.5 23.3 29.2 25.9 23.4 17.3 9.6 2.6 ****** 1980 -1.4 0.1 7.9 15.9 20.3 25.5 29.5 27.1 22.9 14.4 9.7 4.6 14.7 1981 1.9 4.7 9.9 13.4 18.4 23.2 27.6 26.9 22.7 14.9 10.0 ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1985 1.1 4.1 5.9 15.6 21.9 27.0 27.8 25.8 24.3 15.6 10.3 4.3 15.3 1986 3.4 5.0 4.6 13.4 18.0 24.5 28.9 26.6 23.6 17.7 8.0 1.8 14.6 1987 5.1 6.4 8.1 14.1 21.3 26.9 27.7 27.7 22.2 11.8 10.0 4.8 15.5 1988 1.3 3.0 9.1 14.0 20.7 25.8 27.4 26.2 22.8 17.1 10.7 5.4 15.3 1989 -3.1 -4.0 8.4 16.9 20.2 26.5 28.9 28.4 23.3 18.4 11.1 5.6 15.0 1990 -0.5 1.8 8.2 14.4 20.9 26.5 28.2 27.2 25.1 16.6 12.4 4.2 15.4 1991 1.8 2.1 7.0 15.7 18.8 25.1 28.5 27.7 23.2 17.3 10.5 2.3 15.0 1992 -2.4 2.1 4.4 12.9 15.6 24.2 28.7 25.4 21.9 16.9 10.9 3.9 13.7 1993 -0.7 3.3 7.3 14.9 19.1 25.8 27.5 27.3 24.4 15.0 5.7 4.9 14.5 1994 4.0 3.4 9.8 15.9 19.9 24.5 27.4 27.6 21.3 15.7 10.3 2.4 15.2 1995 5.2 6.3 10.5 15.0 19.4 24.3 28.8 29.9 23.5 15.7 11.4 2.4 16.0 1996 0.0 4.1 5.6 13.0 20.7 25.0 27.7 27.6 24.5 16.4 9.4 7.0 15.1 1997 4.6 3.8 6.6 14.6 20.4 26.7 28.8 29.7 22.9 18.9 9.2 4.6 15.9 1998 -0.3 2.6 8.5 15.9 19.9 28.1 28.3 27.9 23.5 17.3 13.0 8.2 16.1 1999 3.6 8.2 9.3 15.6 22.1 26.9 26.4 29.4 23.1 18.3 8.1 5.3 16.4 2000 2.8 4.2 9.2 18.7 22.9 26.1 29.3 29.0 24.5 15.1 7.8 4.5 16.2 MEAN 1.0 3.4 8.3 14.7 20.0 25.3 28.1 27.2 23.0 16.4 9.8 3.9 15.1 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 26 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. AVERAGE OF DEW POINT TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 -2.2 -2.5 -2.9 2.8 5.9 4.8 7.5 8.7 6.1 1.7 -2.3 -2.3 2.1 1962 -2.3 -2.4 -2.7 3.2 5.3 6.0 7.8 9.1 3.2 2.6 -1.5 -2.0 2.2 1963 -2.0 -3.1 -4.0 3.0 6.1 6.7 9.4 9.8 6.1 5.1 0.0 -3.1 2.8 1964 ****** -3.5 -1.0 -1.7 -0.1 6.2 9.4 7.8 5.2 -0.8 -2.4 -3.9 ****** 1965 -3.4 -3.3 -1.1 -0.0 3.9 7.7 10.1 9.2 7.7 6.2 0.8 -3.6 2.9 1966 -2.2 -1.9 -0.8 1.6 5.4 6.5 9.2 7.7 6.1 6.3 -3.5 -5.1 2.4 1967 -5.6 -5.9 -7.4 -1.4 3.5 0.1 5.0 9.3 5.9 6.4 -1.7 -5.2 0.2 1968 -4.8 -1.0 1.0 4.3 9.8 9.9 12.1 9.1 7.4 8.4 2.6 -3.5 4.6 1969 -6.7 -3.6 -0.8 -0.3 3.8 7.8 ****** ****** ****** ****** ****** ****** ****** 1970 ****** ****** ****** ****** ****** ****** ****** 22.6 19.7 15.3 10.8 2.7 ****** 1971 -0.2 2.1 7.9 10.6 18.5 13.0 14.3 15.4 13.2 8.3 7.1 0.0 9.2 1972 -5.7 -4.5 1.9 8.1 11.0 16.3 14.1 11.3 10.1 6.2 1.2 -4.0 5.5 1973 -5.2 0.3 -0.6 2.5 6.7 10.4 13.2 12.2 ****** 4.6 -3.2 -3.6 ****** 1974 -3.8 -3.7 3.6 6.0 12.0 15.8 16.7 13.1 11.8 3.8 1.3 -4.0 6.1 1975 -3.3 -2.2 1.2 8.8 12.0 20.6 21.0 20.4 13.7 3.5 -1.2 -7.0 7.3 1976 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1977 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1978 -4.0 -2.5 -1.5 -0.6 4.2 5.6 8.2 6.9 3.2 3.1 -4.1 -0.9 1.5 1979 ****** ****** -1.7 1.7 4.8 6.7 7.1 5.5 4.5 2.5 -4.2 -2.3 ****** 1980 -4.9 -2.7 -0.6 1.6 5.6 5.9 7.5 8.5 3.4 2.9 2.5 -3.1 2.2 1981 -3.4 -2.4 -0.2 2.6 5.2 8.0 9.3 9.0 3.2 4.1 -3.6 ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1985 -2.8 -5.4 -2.8 1.5 3.2 6.9 9.2 7.1 1.6 0.6 2.6 -1.5 1.7 1986 -5.2 -2.6 -1.9 6.1 8.5 8.0 8.2 7.7 3.5 5.1 1.4 -3.1 3.0 1987 -4.6 -1.5 -0.3 1.5 8.3 7.0 7.3 7.6 5.8 4.0 -0.4 -1.3 2.8 1988 -2.7 -3.4 -2.3 3.2 4.5 5.5 10.4 9.2 6.8 3.6 -1.5 -2.9 2.5 1989 -7.8 -8.6 1.0 1.4 4.5 6.7 10.0 8.2 6.4 2.1 0.9 0.1 2.1 1990 -4.7 -3.7 -3.0 0.2 2.9 4.4 8.5 8.6 3.6 3.1 -0.6 -4.2 1.3 1991 -2.8 -4.3 1.2 4.0 3.6 6.4 7.6 7.1 5.0 4.5 0.8 -2.2 2.6 1992 -6.9 -4.6 -2.4 2.5 7.2 9.0 9.3 7.6 3.1 1.1 -0.4 -2.5 1.9 1993 -7.4 -3.4 -2.1 2.0 6.1 9.3 11.1 10.1 8.1 2.5 2.3 -0.3 3.2 1994 -0.9 -3.8 -0.5 4.8 6.4 7.0 9.8 9.0 5.8 6.4 3.7 -3.7 3.7 1995 -3.3 -3.1 -2.4 3.8 7.5 7.4 9.5 8.4 5.4 3.7 -4.3 -3.7 2.4 1996 -3.6 -0.3 0.1 3.2 8.5 8.5 11.1 10.2 6.4 3.7 -1.4 -2.7 3.6 1997 -4.4 -8.5 -3.6 0.5 5.2 8.3 10.3 6.7 4.4 3.7 2.1 -0.2 2.0 1998 -4.0 -4.2 -0.9 4.4 7.7 6.8 10.1 10.7 7.6 3.6 1.5 0.7 3.6 1999 -3.1 -3.9 -1.9 1.0 2.7 5.0 10.3 8.6 7.5 3.1 1.1 -0.2 2.5 2000 -4.5 -4.8 -4.6 1.6 2.7 4.3 6.6 6.9 7.1 4.8 1.0 0.4 1.8 MEAN -4.0 -3.3 -1.1 2.8 6.3 7.9 10.0 9.7 6.6 4.3 0.2 -2.4 3.1 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 27 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. AVERAGE OF MIXING RATIO IN G/KG YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 3.87 3.75 3.74 5.56 6.92 6.44 7.74 8.33 6.96 5.15 3.95 3.82 5.52 1962 3.82 3.87 3.71 5.80 6.62 6.99 7.92 8.55 5.88 5.40 4.21 3.93 5.56 1963 3.98 3.66 3.47 5.69 6.93 7.28 8.72 8.96 7.01 6.44 4.62 3.63 5.87 1964 ****** 3.51 4.28 4.07 4.68 7.11 8.76 7.93 6.74 4.29 3.81 3.37 ****** 1965 3.53 3.57 4.20 4.54 6.16 7.78 9.20 8.62 7.71 7.02 4.89 3.47 5.89 1966 3.88 3.93 4.34 5.13 6.64 7.35 8.73 7.96 7.21 7.03 3.64 3.14 5.75 1967 3.04 3.05 2.67 4.21 5.93 4.75 6.72 8.92 6.98 7.17 4.31 3.11 5.07 1968 3.20 4.45 5.03 6.91 9.32 9.87 11.60 8.98 7.87 8.36 5.67 3.63 7.07 1969 2.87 3.50 4.29 4.46 6.05 7.80 ****** ****** ****** ****** ****** ****** ****** 1970 ****** ****** ****** ****** ****** ****** ****** 20.55 17.30 13.19 9.78 5.63 ****** 1971 4.66 5.39 8.02 9.64 15.98 11.14 12.26 12.91 11.22 8.06 7.41 4.65 9.28 1972 3.03 3.34 5.23 7.99 9.69 13.70 12.13 10.03 9.20 7.07 5.00 3.47 7.49 1973 3.14 4.65 4.48 5.40 7.28 9.36 11.34 10.65 ****** 6.31 3.94 3.64 ****** 1974 3.49 3.63 5.98 7.16 10.41 13.64 14.26 11.12 10.30 6.07 5.03 3.41 7.88 1975 3.56 3.90 5.05 8.39 10.38 18.47 18.70 18.47 11.77 5.85 4.20 2.75 9.29 1976 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1977 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1978 3.40 3.77 4.09 4.46 6.12 6.75 8.01 7.39 5.80 5.59 3.40 4.37 5.26 1979 ****** ****** 4.15 5.24 6.42 7.29 7.75 6.75 6.50 5.45 3.70 3.82 ****** 1980 3.20 3.78 4.47 5.32 6.71 6.85 7.65 8.27 5.88 5.56 5.42 3.63 5.56 1981 3.54 3.86 4.53 5.70 6.55 7.96 8.67 8.50 5.78 6.07 3.53 ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1985 3.82 3.12 3.82 5.05 5.69 7.37 8.55 7.50 5.21 4.78 5.46 4.05 5.37 1986 3.10 3.74 3.97 6.96 8.20 8.10 8.02 7.82 5.78 6.46 5.07 3.65 5.91 1987 3.24 4.06 4.52 5.21 8.03 7.33 7.59 7.73 6.89 6.11 4.46 4.15 5.78 1988 3.72 3.56 3.88 5.98 6.23 6.73 9.36 8.79 7.30 5.86 4.39 3.78 5.80 1989 2.55 2.45 4.88 5.14 6.29 7.35 9.02 8.02 7.20 5.25 4.82 4.56 5.63 1990 3.27 3.46 3.74 4.66 5.63 6.31 8.19 8.28 5.97 5.71 4.37 3.42 5.25 1991 3.72 3.37 5.00 6.02 5.92 7.12 7.73 7.63 6.56 6.23 4.76 3.91 5.66 1992 2.79 3.31 3.97 5.49 7.52 8.52 8.88 7.90 5.76 4.95 4.59 3.88 5.63 1993 2.64 3.63 3.97 5.34 6.94 8.60 9.74 9.15 7.92 5.45 5.41 4.40 6.10 1994 4.29 3.47 4.40 6.53 7.14 7.49 8.98 8.57 6.87 7.05 5.94 3.53 6.19 1995 3.57 3.64 3.99 5.99 7.74 7.79 8.88 8.25 6.63 5.90 3.45 3.45 5.77 1996 3.53 4.42 4.55 5.74 8.12 8.16 9.68 9.37 7.14 5.94 4.10 3.79 6.21 1997 3.30 2.53 3.56 4.80 6.55 8.05 9.32 7.40 6.23 5.84 5.29 4.47 5.61 1998 3.43 3.37 4.35 6.23 7.74 7.24 9.12 9.57 7.76 5.79 5.04 4.71 6.19 1999 3.66 3.44 3.95 4.94 5.51 6.47 9.23 8.22 7.70 5.64 4.92 4.47 5.68 2000 3.30 3.18 3.33 5.23 5.55 6.29 7.26 7.47 7.51 6.37 4.95 4.64 5.42 MEAN 3.44 3.65 4.34 5.73 7.28 8.22 9.39 9.25 7.53 6.28 4.81 3.89 6.15 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 28 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. AVERAGE OF VAPOUR PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 5.32 5.17 5.17 7.68 9.58 8.94 10.72 11.53 9.62 7.13 5.46 5.28 7.63 1962 5.27 5.34 5.14 8.00 9.16 9.69 10.97 11.81 8.15 7.47 5.81 5.41 7.68 1963 5.48 5.06 4.80 7.86 9.57 10.08 12.07 12.39 9.70 8.90 6.37 5.00 8.11 1964 ****** 4.85 5.91 5.63 6.50 9.85 12.12 10.98 9.32 5.93 5.26 4.64 ****** 1965 4.85 4.92 5.80 6.28 8.53 10.76 12.72 11.92 10.66 9.68 6.75 4.78 8.14 1966 5.36 5.43 5.98 7.10 9.19 10.18 12.07 11.02 9.96 9.70 5.03 4.34 7.95 1967 4.20 4.20 3.70 5.82 8.21 6.60 9.33 12.34 9.66 9.89 5.96 4.29 7.02 1968 4.42 6.13 6.94 9.51 12.83 13.57 15.91 12.41 10.87 11.51 7.81 5.01 9.74 1969 3.95 4.81 5.92 6.17 8.37 10.80 ****** ****** ****** ****** ****** ****** ****** 1970 ****** ****** ****** ****** ****** ****** ****** 27.91 23.56 18.04 13.43 7.73 ****** 1971 6.42 7.42 11.03 13.24 21.80 15.33 16.86 17.76 15.45 11.12 10.20 6.41 12.75 1972 4.16 4.59 7.21 11.02 13.32 18.78 16.68 13.83 12.70 9.78 6.90 4.77 10.31 1973 4.32 6.41 6.18 7.47 10.06 12.92 15.62 14.68 ****** 8.74 5.44 5.02 ****** 1974 4.80 5.00 8.23 9.86 14.32 18.69 19.55 15.32 14.18 8.38 6.95 4.70 10.83 1975 4.89 5.37 6.96 11.55 14.26 25.12 25.48 25.12 16.17 8.09 5.80 3.79 12.72 1976 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1977 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1978 4.69 5.20 5.65 6.18 8.47 9.35 11.09 10.23 8.04 7.74 4.69 6.02 7.28 1979 ****** ****** 5.72 7.25 8.87 10.09 10.74 9.36 9.01 7.55 5.11 5.26 ****** 1980 4.40 5.20 6.16 7.36 9.28 9.49 10.61 11.45 8.15 7.68 7.47 5.00 7.69 1981 4.88 5.33 6.26 7.87 9.05 11.01 12.00 11.76 8.01 8.38 4.88 ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1985 5.26 4.30 5.28 6.99 7.89 10.22 11.84 10.39 7.23 6.61 7.53 5.59 7.43 1986 4.27 5.16 5.47 9.59 11.31 11.18 11.12 10.83 8.02 8.93 6.98 5.03 8.16 1987 4.47 5.60 6.23 7.19 11.10 10.16 10.52 10.71 9.53 8.43 6.16 5.72 7.99 1988 5.12 4.90 5.37 8.25 8.63 9.33 12.94 12.16 10.10 8.11 6.07 5.22 8.02 1989 3.51 3.37 6.73 7.11 8.71 10.19 12.49 11.12 9.97 7.27 6.67 6.29 7.79 1990 4.50 4.77 5.17 6.45 7.80 8.76 11.35 11.46 8.28 7.89 6.05 4.71 7.27 1991 5.12 4.64 6.89 8.33 8.19 9.87 10.71 10.57 9.09 8.62 6.58 5.38 7.83 1992 3.83 4.56 5.47 7.58 10.38 11.77 12.27 10.93 7.98 6.85 6.34 5.34 7.77 1993 3.64 5.01 5.47 7.39 9.60 11.90 13.46 12.66 10.97 7.53 7.45 6.07 8.43 1994 5.91 4.79 6.07 9.01 9.87 10.37 12.43 11.86 9.50 9.73 8.19 4.87 8.55 1995 4.92 5.03 5.52 8.28 10.68 10.77 12.28 11.43 9.19 8.16 4.77 4.75 7.98 1996 4.86 6.09 6.27 7.92 11.22 11.29 13.38 12.93 9.89 8.22 5.67 5.23 8.58 1997 4.55 3.49 4.91 6.64 9.07 11.15 12.89 10.26 8.64 8.09 7.29 6.16 7.76 1998 4.72 4.65 6.00 8.60 10.69 10.04 12.62 13.22 10.73 8.02 6.96 6.50 8.56 1999 5.05 4.76 5.46 6.84 7.64 8.98 12.76 11.40 10.65 7.81 6.79 6.16 7.86 2000 4.54 4.39 4.61 7.24 7.70 8.72 10.08 10.35 10.39 8.79 6.82 6.39 7.50 MEAN 4.74 5.03 5.99 7.92 10.05 11.35 12.96 12.77 10.41 8.67 6.64 5.36 8.49 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 29 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. AVERAGE OF SATURATION DEFICIT PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 1.29 2.94 5.00 8.57 18.42 26.35 29.97 22.81 18.00 10.60 6.67 4.70 12.94 1962 2.45 4.26 9.46 7.24 14.77 21.68 28.39 19.12 18.01 11.71 5.20 3.66 12.16 1963 4.53 6.04 7.07 9.76 10.33 21.64 26.19 23.33 20.12 11.52 5.18 2.21 12.33 1964 ****** 3.46 7.37 9.63 20.15 25.01 27.89 26.04 18.27 11.25 6.55 1.64 ****** 1965 0.49 2.64 6.40 9.82 17.82 21.66 24.72 25.92 16.28 8.44 6.87 4.62 12.14 1966 5.39 5.51 5.81 10.78 16.38 28.02 26.86 28.54 18.91 8.72 8.29 5.08 14.02 1967 3.42 2.72 7.45 11.22 17.45 29.47 36.25 29.92 19.26 8.51 7.67 4.42 14.81 1968 2.82 2.23 5.83 7.91 12.21 22.08 26.26 26.62 18.98 7.22 6.04 3.27 11.79 1969 0.82 2.34 5.51 9.96 17.15 21.60 ****** ****** ****** ****** ****** ****** ****** 1970 ****** ****** ****** ****** ****** ****** ****** 9.65 6.27 5.00 3.19 0.94 ****** 1971 1.32 1.56 3.92 3.68 5.68 16.08 23.73 20.25 15.50 9.26 3.85 3.33 9.01 1972 0.79 1.01 3.52 8.94 7.00 11.68 20.96 18.15 16.39 14.71 6.51 1.40 9.26 1973 0.79 3.64 6.22 9.92 14.56 21.16 20.57 23.31 ****** 14.71 6.92 3.31 ****** 1974 0.65 0.75 2.41 5.80 9.99 11.85 14.76 17.35 12.71 9.80 6.77 1.48 7.86 1975 1.21 1.79 3.59 6.06 6.06 9.98 16.00 12.12 11.69 10.44 4.77 2.54 7.19 1976 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1977 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1978 2.69 4.13 6.90 11.68 15.60 21.31 27.81 26.23 23.91 12.79 3.97 3.25 13.36 1979 ****** ****** 5.17 11.74 12.23 20.32 31.47 25.67 21.30 13.39 7.67 2.49 ****** 1980 1.33 1.24 5.22 11.45 15.81 24.70 32.04 26.38 21.57 10.03 4.99 3.97 13.23 1981 2.39 3.59 6.63 8.77 13.44 18.67 26.73 25.18 21.32 9.33 8.20 ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1985 1.72 4.39 5.36 11.76 19.65 27.50 27.97 24.31 25.05 12.14 5.58 3.00 14.04 1986 4.02 4.06 3.57 6.37 10.39 21.43 30.73 25.60 22.53 12.21 4.33 2.20 12.29 1987 4.62 4.46 4.95 10.10 15.28 26.94 28.64 28.59 18.84 6.52 6.89 3.17 13.25 1988 1.75 3.16 6.72 8.77 17.49 25.54 25.76 23.68 19.25 12.38 7.65 4.28 13.04 1989 1.56 1.36 4.76 13.17 16.54 26.87 29.73 29.29 20.90 15.12 6.96 3.04 14.11 1990 1.61 2.53 6.43 11.11 18.63 28.15 29.16 27.04 25.55 11.97 9.02 4.37 14.63 1991 1.97 2.88 3.76 10.58 14.75 23.71 30.06 28.72 21.39 11.76 6.74 2.18 13.21 1992 1.51 2.86 3.33 8.12 8.50 20.19 29.55 23.34 19.79 13.26 7.40 2.94 11.73 1993 2.46 3.05 5.14 10.28 13.56 23.35 24.90 25.29 22.07 10.29 2.15 2.87 12.12 1994 2.55 3.34 6.79 10.11 14.68 22.34 26.66 27.59 16.83 8.72 4.64 2.59 12.24 1995 4.29 4.86 7.80 9.57 12.68 20.94 30.25 33.11 21.52 10.85 9.66 2.76 14.02 1996 1.58 2.48 3.35 7.92 14.33 22.43 25.32 25.77 22.48 11.21 6.63 5.08 12.38 1997 4.28 4.99 5.34 11.28 16.05 25.44 29.42 33.82 20.86 14.71 4.64 2.52 14.45 1998 1.46 3.18 5.80 10.57 13.77 29.53 27.89 26.05 19.76 12.97 8.62 4.74 13.69 1999 3.04 6.55 6.90 11.78 20.67 28.57 23.67 30.88 19.44 14.61 4.48 3.04 14.47 2000 3.28 4.32 7.74 15.13 21.92 27.61 32.43 31.42 21.93 9.08 4.07 2.16 15.09 MEAN 2.32 3.28 5.62 9.69 14.53 22.76 27.05 25.03 19.29 11.04 6.14 3.13 12.49 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 30 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. AVERAGE OF RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 83 68 56 52 39 30 33 39 42 47 49 56 50 1962 70 60 40 57 43 35 32 42 36 44 57 63 48 1963 59 51 46 49 53 36 37 42 39 49 58 75 50 1964 *** 62 50 45 28 33 37 37 39 41 51 78 *** 1965 92 70 54 44 37 38 40 35 45 59 53 56 52 1966 53 53 56 44 41 31 37 31 39 56 41 51 44 1967 60 64 40 38 34 20 24 31 39 57 48 57 43 1968 67 76 58 57 56 46 42 35 40 64 62 64 56 1969 84 74 60 44 35 38 *** *** *** *** *** *** *** 1970 *** *** *** *** *** *** *** 76 81 80 82 89 *** 1971 83 84 76 80 80 52 45 50 52 56 74 68 67 1972 84 83 70 58 69 64 49 48 49 44 55 79 63 1973 86 69 52 46 45 44 47 42 *** 41 46 65 *** 1974 88 88 79 64 61 62 59 50 56 49 53 78 66 1975 81 78 69 67 71 72 62 68 60 49 56 59 66 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** *** *** *** *** *** *** *** *** *** *** *** 1978 67 61 52 40 42 37 34 35 31 43 58 67 47 1979 *** *** 59 43 48 40 30 31 34 42 44 72 *** 1980 79 82 60 43 42 32 28 37 33 51 64 61 51 1981 70 64 55 53 47 42 37 37 32 53 42 *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 *** *** *** *** *** *** *** *** *** *** *** *** *** 1985 77 55 59 43 33 33 37 35 28 40 63 69 48 1986 57 62 68 65 58 40 32 35 31 47 66 72 53 1987 52 61 59 48 47 32 33 33 41 65 53 67 49 1988 76 67 49 53 41 32 40 40 41 46 46 59 49 1989 73 73 64 39 40 35 36 32 38 39 52 69 49 1990 75 71 51 43 37 30 34 38 30 46 44 58 46 1991 74 66 70 50 42 36 32 33 37 47 54 75 51 1992 73 64 66 55 62 44 36 39 36 38 50 66 52 1993 63 64 57 47 47 38 40 39 39 47 80 72 53 1994 73 63 53 52 46 38 39 38 40 57 67 68 53 1995 56 55 46 51 50 40 36 33 36 49 36 67 46 1996 79 75 72 57 50 40 39 38 36 46 50 53 53 1997 54 45 53 42 40 35 38 29 36 40 64 73 46 1998 77 64 57 50 50 29 37 39 41 44 49 62 50 1999 65 46 50 41 33 29 41 31 43 42 65 70 46 2000 62 57 41 36 31 31 28 30 39 56 65 76 46 MEAN 72 66 57 50 46 39 38 39 41 49 56 67 52 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 31 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. AVERAGE OF MAXIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 92 83 77 68 57 46 55 63 70 68 66 70 68 1962 84 75 57 74 62 54 52 60 58 61 77 80 66 1963 73 68 67 70 74 58 60 71 62 70 73 86 69 1964 *** 78 72 66 45 56 63 63 63 59 68 91 *** 1965 97 83 74 63 57 61 65 53 65 76 70 71 70 1966 68 66 72 61 58 51 59 48 59 71 59 64 61 1967 77 82 64 57 47 29 36 41 58 75 69 75 59 1968 82 89 73 72 74 73 61 52 54 84 84 79 73 1969 94 84 79 62 48 61 *** *** *** *** *** *** *** 1970 *** *** *** *** *** *** *** 85 89 89 93 97 *** 1971 92 90 85 89 87 64 59 62 63 67 81 78 76 1972 91 89 81 70 81 75 65 66 65 59 70 88 75 1973 93 78 65 56 60 63 61 55 *** 55 64 79 *** 1974 97 94 85 73 68 69 68 62 68 59 67 87 75 1975 91 88 80 75 80 76 68 76 70 67 65 69 75 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** *** *** *** *** *** *** *** *** *** *** *** 1978 82 79 69 62 66 59 53 62 52 65 77 83 67 1979 *** *** 77 60 70 65 50 49 51 61 58 84 *** 1980 90 92 82 60 63 51 44 62 52 72 84 79 69 1981 84 82 79 73 67 67 59 60 52 72 59 *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 *** *** *** *** *** *** *** *** *** *** *** *** *** 1985 86 74 77 66 51 54 62 55 46 59 81 82 66 1986 74 78 84 83 77 65 53 56 51 65 81 83 71 1987 69 76 76 69 67 52 52 56 67 81 69 81 68 1988 87 84 70 75 66 56 64 64 65 65 65 73 70 1989 85 85 79 59 63 61 62 53 58 56 70 82 68 1990 85 84 74 66 60 54 57 65 54 66 60 72 66 1991 85 81 84 71 64 61 51 56 62 68 73 89 70 1992 86 81 84 77 80 70 59 61 63 52 65 79 71 1993 75 77 75 68 69 55 61 59 59 66 91 84 70 1994 85 78 71 70 65 59 64 67 59 76 82 82 72 1995 72 73 64 70 68 66 63 58 55 69 50 79 66 1996 87 87 86 77 71 63 61 57 57 63 69 67 70 1997 69 67 76 61 59 56 66 50 57 55 77 84 65 1998 88 78 77 69 72 48 60 61 63 63 65 75 68 1999 80 62 69 63 56 50 62 48 69 57 80 82 65 2000 76 74 60 53 54 55 46 50 65 72 82 86 64 MEAN 84 80 75 68 65 59 58 59 61 67 72 80 69 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 32 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. AVERAGE OF MINIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 73 56 39 39 25 17 18 24 24 27 32 44 35 1962 58 47 27 44 28 22 18 32 19 29 39 47 34 1963 46 37 32 33 37 21 23 24 21 31 43 65 34 1964 *** 49 35 30 16 19 21 20 21 24 33 65 *** 1965 84 59 38 31 23 24 24 23 28 42 37 42 38 1966 40 41 41 30 28 17 22 19 24 42 27 39 31 1967 44 47 21 25 24 14 15 22 24 43 27 39 29 1968 51 60 43 42 38 22 22 20 28 46 36 48 38 1969 73 62 44 30 25 24 *** *** *** *** *** *** *** 1970 *** *** *** *** *** *** *** 66 73 70 71 81 *** 1971 73 76 65 69 73 39 31 39 41 47 68 57 57 1972 76 76 61 45 54 52 28 26 27 26 38 67 48 1973 78 58 41 36 30 26 32 28 *** 27 30 51 *** 1974 79 79 72 55 53 55 50 38 44 38 41 68 56 1975 72 66 59 59 62 67 57 61 50 30 47 50 57 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** *** *** *** *** *** *** *** *** *** *** *** 1978 53 48 37 25 27 22 22 18 17 27 43 54 33 1979 *** *** 45 29 34 23 17 19 21 26 29 60 *** 1980 68 73 44 30 29 21 18 22 20 36 48 41 38 1981 59 49 40 38 33 27 23 23 19 36 27 *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 *** *** *** *** *** *** *** *** *** *** *** *** *** 1985 67 39 46 28 20 20 21 22 15 27 48 55 34 1986 41 50 57 50 44 25 20 22 19 33 54 60 40 1987 40 49 47 33 34 20 21 19 25 53 41 54 36 1988 67 54 34 37 25 18 25 24 27 32 33 48 35 1989 62 63 51 26 27 19 21 21 26 28 40 59 37 1990 66 61 36 28 22 16 21 21 16 31 31 47 33 1991 63 55 58 36 27 20 20 19 22 32 40 61 38 1992 61 49 52 39 48 27 21 24 19 26 37 53 38 1993 54 53 43 33 32 28 27 27 26 33 70 61 41 1994 62 49 39 38 33 24 24 21 28 44 55 54 39 1995 45 42 31 37 37 23 18 17 24 36 25 57 33 1996 70 65 58 42 35 26 26 25 22 34 37 42 40 1997 43 29 38 30 27 22 19 16 23 29 55 63 33 1998 67 54 43 36 34 19 23 25 27 32 38 50 37 1999 53 34 37 27 18 16 27 20 27 31 54 59 34 2000 51 44 29 24 18 17 17 17 22 43 51 68 33 MEAN 61 54 44 36 33 25 24 25 26 35 42 55 38 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 33 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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 1961 3 2 0 3 0 0 0 0 0 0 0 0 8 1962 0 4 0 8 1 0 0 0 0 0 0 1 14 1963 1 1 2 3 4 0 0 1 0 0 2 5 19 1964 0 3 0 1 0 0 0 0 0 0 1 2 7 1965 8 0 2 2 0 0 0 0 0 2 0 1 15 1966 1 1 5 1 0 0 0 0 1 2 0 1 12 1967 1 1 1 1 1 0 0 0 0 0 2 1 8 1968 3 2 3 3 4 1 0 0 0 1 7 3 27 1969 4 1 8 4 2 0 *** *** *** *** *** *** *** 1970 *** *** *** *** *** *** 1 0 0 0 1 3 *** 1971 3 2 2 5 0 0 0 0 0 0 3 3 18 1972 2 3 4 0 5 0 0 0 0 0 2 7 23 1973 3 3 1 2 0 0 0 0 0 0 0 1 10 1974 3 4 2 4 0 1 1 0 0 0 0 4 19 1975 2 6 2 3 3 0 0 0 0 0 3 5 24 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** *** *** *** *** *** *** *** *** *** *** *** 1978 3 1 3 1 0 0 0 0 0 0 1 5 14 1979 *** *** 4 0 1 1 0 0 0 0 0 3 *** 1980 2 5 4 1 0 0 0 0 0 2 1 2 17 1981 4 4 3 4 2 1 0 0 0 0 1 *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 *** *** *** *** *** *** *** *** *** *** *** *** *** 1985 5 2 0 0 0 0 0 0 0 0 1 3 11 1986 0 0 5 4 3 0 0 0 0 0 3 1 16 1987 0 4 6 1 1 0 0 0 0 6 1 2 21 1988 5 2 3 1 0 0 2 0 0 0 0 2 15 1989 3 3 6 0 1 0 0 0 0 0 0 4 17 1990 1 3 2 1 1 0 0 0 0 2 0 1 11 1991 2 2 6 2 1 0 0 0 0 1 0 3 17 1992 3 2 5 3 5 0 0 0 0 0 1 2 21 1993 1 4 3 2 0 0 0 0 0 0 8 2 20 1994 5 2 1 2 4 1 0 0 0 0 7 0 22 1995 0 0 2 1 2 0 0 0 0 1 0 1 7 1996 1 4 8 5 2 0 0 0 0 0 0 1 21 1997 1 0 2 1 0 0 0 0 0 0 1 3 8 1998 4 3 4 5 2 0 0 1 1 0 0 2 22 1999 3 1 3 0 0 0 2 0 0 1 5 2 17 2000 2 2 1 0 0 0 0 0 0 4 2 3 14 MEAN 2 2 3 2 1 0 0 0 0 1 2 2 15 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 34 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. HIGHEST AND LOWEST LIMITS FOR 40 YEARS DURING 1961-2000 ELE- JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MENT --------------------------------------------------------------------------------------------- NO. HIG. DRY 03 10.2 13.0 18.0 21.8 29.2 29.2 36.0 31.2 28.0 28.2 17.2 12.2 1 YEAR - DAY 1994- 4 1963-25 1971-20 1972-29 1966-24 1985-27 1967- 4 1971-23 1961- 1 1970- 5 1970- 1 1970- 6 LOW. DRY 03 -14.0 -14.0 -9.2 -5.2 0.6 9.0 12.2 11.6 7.0 -0.4 -6.0 -14.2 2 YEAR - DAY 1978-15 1974- 6 1985-10 1981- 2 1992- 2 1962-10 1978- 3 1972-29 1992-30 1987-27 1993-30 1990-28 HIG. WET 03 8.0 9.2 15.0 16.2 21.8 24.8 27.0 24.5 23.4 26.2 15.0 9.8 3 YEAR - DAY 1994- 4 1971-23 1971-20 1971-30 1971-16 1968-28 1970-24 1970-27 1970-26 1970- 5 1970- 3 1970- 6 LOW. WET 03 -14.2 -15.0 -9.4 -5.6 0.2 5.8 8.4 9.0 0.8 -0.6 -7.4 -14.4 4 YEAR - DAY 1978-15 1974- 6 1985-10 1981- 2 1992- 5 1962-11 1967-24 1972-29 1979-25 1987-27 1988-15 1990-28 HIG. DRY 09 16.6 19.0 23.2 28.4 34.0 38.4 39.4 39.6 35.2 31.6 24.2 17.2 5 YEAR - DAY 1966- 6 1973-19 1962-25 1968-18 1973-29 1973-27 1967- 4 1995-17 1971- 9 1970- 1 1973- 1 1990- 5 LOW. DRY 09 -7.4 -7.4 -3.6 -2.4 4.4 16.2 21.0 18.2 15.8 0.6 -0.2 -7.5 6 YEAR - DAY 1989-16 1972- 3 1990-17 1981- 1 1992- 2 1978- 3 1999-15 1992-29 1995-21 1987-27 1993-29 1974-27 HIG. WET 09 13.0 13.9 19.2 24.2 26.8 35.0 31.4 33.0 28.8 26.8 20.4 12.2 7 YEAR - DAY 1971- 6 1971-21 1971-27 1989-17 1971-16 1986-29 1968-27 1975- 1 1970- 7 1970- 1 1970- 1 1970- 5 LOW. WET 09 -8.1 -8.3 -4.2 -2.4 4.2 10.4 14.4 11.5 9.4 0.4 -2.4 -8.0 8 YEAR - DAY 1989-16 1989- 1 1992-11 1981- 1 1992- 2 1967- 5 2000-20 1991-20 1962-27 1987-27 1964-29 1974-29 HIG. DRY 15 13.6 15.0 23.0 27.2 32.2 36.8 38.4 39.8 34.2 27.4 21.0 14.0 9 YEAR - DAY 1987-31 1973-28 1971-24 1997-26 1999-29 1989-27 1989- 1 1993-14 1968- 5 1998- 1 1974- 4 1990- 5 LOW. DRY 15 -10.6 -11.0 -4.0 0.0 5.0 15.0 16.8 13.8 13.0 2.0 -2.4 -9.0 10 YEAR - DAY 1989-31 1974- 5 1991-10 1981- 1 1992- 2 1966- 3 1999-14 1979-31 1970- 9 1987-27 1964-29 1972-24 HIG. WET 15 11.2 11.6 17.4 19.0 24.2 29.0 29.2 32.8 27.2 21.0 18.2 11.2 11 YEAR - DAY 1971- 7 1971-21 1971-18 1974-18 1971-19 1975-19 1968-30 1996-26 1970- 3 1970- 1 1970- 3 1970- 7 LOW. WET 15 -12.2 -11.0 -4.4 -0.4 4.6 8.0 13.2 11.8 8.0 1.2 -2.6 -9.8 12 YEAR - DAY 1969- 8 1974- 5 1985- 1 1981- 1 1992- 2 1961- 7 1967-27 1972- 1 1962-26 1987-27 1993-14 1972-24 HIG. MIN. 8.8 10.5 14.2 17.5 21.4 25.0 30.0 30.0 27.0 17.8 14.9 10.4 13 YEAR - DAY 1966-30 1963-23 1965-12 1969-30 1997-28 1975-19 2000- 2 1990- 5 1961- 1 1989- 6 1990-10 1989- 1 LOW. MIN. -17.5 -15.6 -10.5 -8.0 -1.0 6.4 10.0 7.5 2.5 -0.5 -9.5 -16.5 14 YEAR - DAY 1972-24 1989- 1 1985- 9 1967- 1 1979- 1 1962-11 1967-21 1970-30 1970-13 1987-27 1973- 8 1972-25 HIG. MAX. 18.2 21.0 28.0 30.5 35.0 41.5 42.5 41.5 38.5 33.5 26.5 19.0 15 YEAR - DAY 1987-31 1973-28 1971-20 1973-28 1973-27 1973-27 1973-29 1973- 2 1972- 6 1972- 3 1973- 2 1973- 5 LOW. MAX. -7.4 -8.0 -0.8 2.5 8.6 21.8 25.4 25.8 20.5 3.2 0.6 -5.0 16 YEAR - DAY 1964- 5 1972- 4 1985- 8 1981- 1 1992- 2 1962-10 1999-15 1992-31 1981-23 1987-27 1999-11 1990-27 HIG. PPTN 26.0 28.0 44.0 57.0 22.8 7.4 9.4 11.0 8.2 25.0 37.0 46.0 17 YEAR - DAY 1975- 3 1973-21 1996- 2 1995-24 1967-18 1979- 1 1970-26 1998- 3 1966-30 2000-17 1994-26 1972- 1 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 35 STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. HIGHEST LIMITS OF ABSOLUTE DIFFERENCES FOR 40 YEARS DURING 1961-2000 ELE- JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MENT --------------------------------------------------------------------------------------------- NO. DRY 09 - DRY 03 16.0 15.0 16.8 16.4 18.6 22.6 20.8 18.6 18.6 18.6 17.2 18.0 18 YEAR - DAY 1967-15 1974- 7 1986- 3 1987-30 1990-25 1968-10 1961-16 1994- 1 1981-16 1980- 7 1967-29 1967-15 DRY 15 - DRY 09 16.6 12.4 13.0 12.0 13.0 15.6 15.6 17.2 14.0 12.2 13.6 16.0 19 YEAR - DAY 1969- 3 1972- 9 1986- 2 1985-14 1973-29 1966- 3 1967-26 1979-31 1972- 2 1964- 3 1968-17 1967-15 DRY 15 - DRY 03 12.6 13.4 18.6 19.2 19.6 20.4 19.4 19.8 17.6 16.0 12.4 14.4 20 YEAR - DAY 1967-15 1989-18 1998-26 1987-29 1989-30 1990-21 1995-18 1994- 3 1981-16 1973-18 1966-27 1967- 7 WET 09 - WET 03 12.6 15.0 11.0 17.8 11.6 21.2 12.6 14.5 14.6 10.6 13.4 14.0 21 YEAR - DAY 1973- 3 1974- 6 1975-27 1989-17 1971-13 1986-29 1968-27 1975-21 1966- 3 1979- 5 1973- 1 1973-10 WET 15 - WET 09 11.2 12.6 9.4 12.4 9.2 18.0 12.6 14.6 11.4 9.0 8.6 11.0 22 YEAR - DAY 1969- 3 1972- 9 1986- 2 1989-17 1971-22 1986-29 1968-30 1996-26 1966- 3 1970- 3 1970- 8 1968-15 WET 15 - WET 03 11.2 12.0 11.5 10.8 11.4 19.6 16.0 17.6 14.2 13.0 11.4 11.0 23 YEAR - DAY 1971-10 1974- 6 1973- 2 1987-29 1968-12 1995-25 1968- 8 1996-26 1968- 4 1973- 4 1973- 1 1973-16 DAY BY DAY DRY 03 11.8 12.2 18.6 17.2 13.2 15.4 14.2 13.8 13.6 13.8 13.8 11.4 24 YEAR - DAY 1989-17 1971-14 1969-13 1978-12 1981-27 1968- 8 1967-15 1971-24 1961- 2 1985-21 1992-26 1964-26 DAY BY DAY WET 03 11.6 12.2 12.8 10.0 10.6 13.0 10.8 7.2 9.4 11.0 13.8 9.6 25 YEAR - DAY 1989-17 1971-14 1991-11 1968-16 1968-20 1968-28 1995-17 1967-31 1979-25 1970- 8 1988-15 1972-30 DAY BY DAY DRY 09 11.0 15.4 16.8 17.2 13.0 11.8 8.8 12.2 9.4 12.0 13.8 14.4 26 YEAR - DAY 1969- 4 1988- 3 1969-22 1968-19 1981-16 1967- 5 1961-16 1961-11 1980- 8 1988-15 1992-26 1963-25 DAY BY DAY WET 09 8.6 9.6 9.4 12.5 8.0 18.6 14.8 10.0 14.2 8.4 9.0 10.2 27 YEAR - DAY 1971-15 1972-10 1969-22 1971-13 1968-16 1986-30 1968-29 1967-31 1966- 4 1968-23 1973- 3 1963-25 DAY BY DAY DRY 15 10.6 12.4 13.0 13.6 13.2 14.2 16.8 11.4 16.2 11.2 12.2 11.2 28 YEAR - DAY 1968-16 1998- 9 1969-22 1996- 3 1990-12 1966- 3 1985- 9 1979-31 1979- 1 1992-15 1992-26 1963-25 DAY BY DAY WET 15 9.0 10.0 12.6 12.0 7.0 14.2 10.2 15.6 12.4 9.6 11.4 9.6 29 YEAR - DAY 1974-23 1985- 6 1971-15 1968-19 1968-16 1995-25 1968- 9 1996-27 1970- 9 1968-15 1988-14 1968-15 DAY BY DAY MIN. 10.2 11.5 17.6 11.6 12.5 11.5 15.0 10.0 14.0 10.0 13.5 10.0 30 YEAR - DAY 1989-17 1968-23 1965-13 1978-12 1969- 1 1967- 9 1967-22 1990- 6 1961- 2 1973-31 1992-26 1968-29 DAY BY DAY MAX. 10.8 11.9 12.7 11.7 11.6 8.0 10.4 6.4 7.4 9.2 10.0 15.5 31 YEAR - DAY 1969- 4 1985- 6 1986- 8 1981- 1 1999-21 1971-16 1978- 3 1961- 8 1999-23 1962-10 1998-29 1963-25 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. MEAN AND EXTREMES FOR THE YEAR 1961 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 0.7 3.4 6.0 12.8 20.7 24.1 26.6 24.5 21.0 14.6 9.0 6.4 14.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -3.3 -1.9 0.3 6.5 12.9 15.5 17.3 15.7 12.0 6.4 1.9 1.0 7.0 AVERAGE OF MAXIMUM TEMPERATURE IN C. 4.8 8.7 12.1 18.9 28.5 32.6 35.9 33.2 29.9 22.8 16.1 11.9 21.3 DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.1 10.6 11.8 12.4 15.6 17.1 18.6 17.5 17.9 16.4 14.2 10.9 14.3 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.48 3.33 4.01 5.50 7.44 7.45 8.97 8.87 7.77 5.53 3.80 3.76 5.82 MEAN OF MIXING RATIO AT 09 GMT. 4.13 4.13 3.88 5.53 6.36 5.53 6.60 8.08 6.35 4.82 4.07 4.11 5.30 MEAN OF MIXING RATIO AT 15 GMT. 4.00 3.80 3.49 5.61 6.97 6.35 7.64 8.05 6.72 5.11 3.99 3.60 5.44 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -9.4 -9.0 -5.5 -1.2 7.0 7.0 13.0 11.2 7.5 1.5 -5.4 -3.0 -9.4 DAY 16 3 4 17 1 7 31 9 16 25 24 20 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 12.6 14.0 20.0 28.7 32.8 37.0 38.7 36.0 35.0 28.2 21.4 16.2 38.7 DAY 19 8 26 28 24 20 11 7 1 1 3 3 24 HOUR MAXIMUM PRECIPITATION IN MM. 11.7 22.0 2.0 10.6 0.0 0.0 0.0 0.0 0.0 0.0 1.2 4.8 22.0 DAY 3 9 13 15 ** ** ** ** ** ** 23 14 MONTHLY TOTAL PRECIPITATION IN MM. 35.7 37.7 3.7 29.6 0.0 0.0 0.0 0.0 0.0 0.0 1.2 8.0 115.9 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 66.5 25.5 0.0 7.9 NO. OF DAYS WITH PRECIPITATION. 7 6 4 9 0 0 0 0 0 0 1 5 32 NO. OF DAYS PRECIPITATION EQUAL 6 5 2 6 0 0 0 0 0 0 1 3 23 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 1 0 1 0 0 0 0 0 0 0 0 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 88 78 76 66 54 46 55 60 69 68 61 67 66 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 76 60 44 41 26 18 19 26 24 27 35 47 37 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 86 67 48 49 36 24 24 31 33 45 51 54 46 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 14 7 3 0 0 0 0 0 0 0 2 0 26 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 5 0 1 0 0 0 7 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 1 1 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 13 26 31 30 13 0 0 0 113 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 19 15 1 0 0 0 0 0 0 9 11 81 DATE OF START AND END FREEZING START = 14 NOV. END = 17 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. MEAN AND EXTREMES FOR THE YEAR 1962 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 3.1 5.8 11.4 12.1 18.7 22.3 26.4 24.2 19.9 15.8 7.8 5.3 14.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.9 0.7 4.8 5.7 11.4 14.0 18.2 16.4 11.4 8.6 1.4 0.3 7.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.1 11.0 18.0 18.4 26.0 30.6 34.6 32.0 28.5 23.0 14.3 10.3 21.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.0 10.3 13.2 12.7 14.6 16.6 16.4 15.6 17.1 14.4 12.9 10.0 13.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.51 3.58 3.83 5.65 7.12 7.61 9.18 9.04 6.63 5.65 4.41 4.02 5.85 MEAN OF MIXING RATIO AT 09 GMT. 4.20 4.07 3.64 5.70 6.23 6.75 6.36 8.30 4.96 5.08 4.10 3.82 5.27 MEAN OF MIXING RATIO AT 15 GMT. 3.76 3.96 3.67 6.04 6.51 6.62 8.21 8.30 6.05 5.46 4.12 3.94 5.55 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -6.5 -4.6 -1.2 1.5 4.6 6.4 13.5 12.5 7.0 0.8 -4.6 -4.6 -6.5 DAY 16 22 3 19 12 11 9 15 21 13 30 3 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 11.6 17.4 26.0 25.2 30.5 34.0 38.4 35.0 33.0 28.5 22.0 15.5 38.4 DAY 8 20 24 10 18 17 17 3 12 8 1 21 24 HOUR MAXIMUM PRECIPITATION IN MM. 4.0 15.4 2.6 37.2 5.2 3.0 0.0 0.0 0.0 4.4 2.4 7.7 37.2 DAY 23 7 10 21 15 3 ** ** ** 11 3 9 MONTHLY TOTAL PRECIPITATION IN MM. 13.3 55.8 4.9 138.0 10.8 3.0 0.0 0.0 0.0 10.5 6.8 18.7 261.8 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 28.3 58.0 0.0 13.8 NO. OF DAYS WITH PRECIPITATION. 6 9 3 16 6 1 0 0 0 6 6 8 61 NO. OF DAYS PRECIPITATION EQUAL 5 6 2 14 4 1 0 0 0 3 3 5 43 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 3 0 5 0 0 0 0 0 0 0 0 8 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 81 68 54 72 61 54 51 59 56 59 76 77 64 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 63 52 29 44 29 24 18 33 20 29 40 49 36 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 68 59 35 56 39 28 27 33 34 45 55 63 45 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 8 2 0 0 0 0 0 0 0 0 1 2 13 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 5 2 0 0 0 0 7 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 19 31 29 13 0 0 0 93 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 12 2 0 0 0 0 0 0 0 17 16 71 DATE OF START AND END FREEZING START = 11 NOV. END = 12 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. MEAN AND EXTREMES FOR THE YEAR 1963 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 6.9 7.8 8.3 14.6 16.4 22.8 26.1 25.0 22.3 17.1 8.8 1.5 14.8 AVERAGE OF MINIMUM TEMPERATURE IN C. 1.6 2.6 2.2 8.5 10.3 14.3 17.6 16.5 13.6 10.3 2.4 -2.8 8.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 12.1 12.9 14.4 20.7 22.5 31.2 34.6 33.4 30.9 24.0 15.3 5.9 21.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.5 10.3 12.2 12.2 12.2 16.9 17.0 16.9 17.3 13.7 12.9 8.7 13.4 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.90 3.61 3.60 6.28 7.55 8.45 9.72 10.56 8.31 6.72 4.49 3.29 6.37 MEAN OF MIXING RATIO AT 09 GMT. 4.07 3.82 3.39 5.42 6.51 6.33 8.25 8.20 5.91 6.05 4.83 3.93 5.56 MEAN OF MIXING RATIO AT 15 GMT. 3.96 3.56 3.43 5.38 6.72 7.07 8.21 8.13 6.80 6.56 4.53 3.66 5.67 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -4.0 -4.2 -7.0 2.8 5.0 10.2 12.5 13.5 10.5 4.6 -3.7 -13.4 -13.4 DAY 9 8 8 22 13 13 1 4 11 30 29 28 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.8 18.8 21.4 26.0 27.2 34.5 38.8 36.0 34.5 28.2 20.4 15.0 38.8 DAY 27 24 25 9 25 3 18 13 4 1 1 23 24 HOUR MAXIMUM PRECIPITATION IN MM. 8.0 5.4 9.6 17.4 12.8 0.0 0.0 9.4 0.0 2.6 7.6 11.0 17.4 DAY 28 28 31 30 2 ** ** 2 ** 20 4 11 MONTHLY TOTAL PRECIPITATION IN MM. 12.6 12.0 25.6 45.5 59.2 0.0 0.0 9.6 0.0 4.6 15.3 50.6 235.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 21.4 44.6 4.1 30.0 NO. OF DAYS WITH PRECIPITATION. 5 5 9 15 17 0 0 2 0 3 3 10 69 NO. OF DAYS PRECIPITATION EQUAL 3 3 6 8 11 0 0 1 0 2 3 8 45 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 1 2 0 0 0 0 0 0 2 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 71 63 64 68 73 58 60 71 62 66 71 80 67 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 48 43 34 36 38 23 24 25 21 31 44 68 36 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 57 46 41 43 48 28 26 28 34 49 60 78 45 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 1 3 3 0 0 0 0 0 0 0 0 9 16 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 4 0 0 0 0 0 4 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 8 8 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 21 31 31 22 0 0 0 105 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 10 7 0 0 0 0 0 0 0 6 23 57 DATE OF START AND END FREEZING START = 21 NOV. END = 21 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. MEAN AND EXTREMES FOR THE YEAR 1964 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. -6.1 4.0 10.3 11.2 19.6 24.1 25.9 25.2 21.0 13.9 8.4 0.0 13.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -10.8 -1.0 4.6 4.6 12.0 16.2 16.6 16.4 12.5 6.3 2.3 -4.6 6.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. -1.3 8.9 16.0 17.8 27.1 32.1 35.3 34.1 29.6 21.5 14.5 4.7 20.0 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.5 9.9 11.4 13.2 15.1 15.9 18.7 17.7 17.1 15.2 12.2 9.3 13.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** 3.27 4.49 4.55 5.47 8.57 9.92 9.32 7.72 4.34 3.95 3.14 ***** MEAN OF MIXING RATIO AT 09 GMT. ***** 3.83 4.06 3.99 3.99 6.19 7.91 7.02 5.74 3.96 3.63 3.63 ***** MEAN OF MIXING RATIO AT 15 GMT. ***** 3.44 4.29 3.68 4.58 6.57 8.45 7.45 6.75 4.56 3.84 3.34 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -15.7 -6.8 -4.0 -2.2 2.2 12.2 13.0 13.0 8.6 0.8 -7.0 -10.4 -15.7 DAY 5 1 8 12 2 23 8 21 17 29 29 28 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 6.4 15.2 23.6 25.6 31.6 34.2 38.8 37.6 33.4 28.6 19.6 11.3 38.8 DAY 18 22 26 29 10 10 11 14 4 1 16 6 24 HOUR MAXIMUM PRECIPITATION IN MM. 4.4 12.6 3.6 9.0 0.6 0.0 0.0 0.0 0.0 0.0 9.6 7.0 12.6 DAY 19 3 6 12 29 ** ** ** ** ** 23 13 MONTHLY TOTAL PRECIPITATION IN MM. 4.4 27.9 11.3 20.9 0.6 0.0 0.0 0.0 0.0 0.0 16.6 15.6 97.3 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 44.8 22.1 0.0 33.1 NO. OF DAYS WITH PRECIPITATION. 1 6 8 9 1 0 0 0 0 0 4 3 32 NO. OF DAYS PRECIPITATION EQUAL 1 4 5 4 0 0 0 0 0 0 3 3 20 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 0 0 0 0 0 0 0 0 0 0 1 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** 73 66 65 44 56 63 63 62 54 65 89 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** 53 36 33 17 20 23 21 21 25 34 67 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** 60 47 36 24 24 25 26 35 45 54 79 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 29 3 1 0 0 0 0 0 0 0 3 14 50 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 3 2 2 0 0 0 0 7 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 21 0 0 0 0 0 0 0 0 0 0 1 22 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 8 28 31 29 13 0 0 0 109 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 17 3 5 0 0 0 0 0 0 4 29 88 DATE OF START AND END FREEZING START = 12 NOV. END = 24 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. MEAN AND EXTREMES FOR THE YEAR 1965 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. -2.1 1.9 8.4 12.2 20.0 22.9 25.3 25.3 20.7 14.6 10.8 5.1 13.8 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.9 -2.5 2.5 6.2 12.8 14.8 16.7 17.3 13.1 8.3 4.9 -0.6 7.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 1.6 6.2 14.4 18.1 27.1 31.0 33.9 33.4 28.4 20.8 16.7 10.9 20.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 7.5 8.7 11.9 11.9 14.3 16.2 17.2 16.1 15.3 12.5 11.8 11.5 12.9 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.20 3.43 4.35 4.94 7.12 8.83 10.27 9.14 8.27 7.10 5.04 3.25 6.25 MEAN OF MIXING RATIO AT 09 GMT. 3.89 3.76 4.04 4.17 5.37 7.17 8.19 7.67 7.07 6.72 4.62 3.78 5.54 MEAN OF MIXING RATIO AT 15 GMT. 3.48 3.53 4.21 4.50 5.98 7.34 9.14 9.05 7.80 7.23 5.00 3.37 5.88 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -11.5 -14.4 -6.0 0.2 4.0 12.2 15.0 13.0 8.2 0.9 0.0 -7.4 -14.4 DAY 20 3 14 5 4 26 7 9 24 27 11 23 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 4.4 14.6 23.0 26.8 31.4 33.0 38.5 37.0 32.4 25.5 21.0 18.0 38.5 DAY 2 28 11 27 17 28 14 14 15 19 7 15 24 HOUR MAXIMUM PRECIPITATION IN MM. 24.5 0.6 21.2 8.0 1.2 1.8 0.0 1.0 2.4 7.8 3.6 6.6 24.5 DAY 11 14 2 19 4 1 ** 27 30 6 18 29 MONTHLY TOTAL PRECIPITATION IN MM. 105.3 1.4 35.4 18.6 4.0 5.1 0.0 1.6 5.4 26.5 13.2 10.8 227.3 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 62.5 12.2 3.1 22.2 NO. OF DAYS WITH PRECIPITATION. 12 3 5 6 4 4 0 2 3 11 6 3 59 NO. OF DAYS PRECIPITATION EQUAL 11 0 5 4 2 3 0 1 3 8 5 2 44 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 4 0 1 0 0 0 0 0 0 0 0 0 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 93 79 73 61 55 61 65 51 65 74 67 65 67 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 87 63 38 32 24 25 24 23 28 43 37 47 39 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 94 69 50 41 32 28 30 31 43 58 55 57 49 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 21 11 3 0 0 0 0 0 0 0 0 5 40 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 1 2 0 0 0 0 3 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 8 3 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 9 28 31 29 10 0 0 0 107 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 17 9 0 0 0 0 0 0 0 1 17 75 DATE OF START AND END FREEZING START = 11 NOV. END = 18 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. MEAN AND EXTREMES FOR THE YEAR 1966 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 7.6 7.6 8.7 13.9 18.7 24.8 26.1 26.3 21.2 14.8 9.0 3.9 15.2 AVERAGE OF MINIMUM TEMPERATURE IN C. 2.3 2.4 3.4 7.7 11.3 16.3 17.3 18.4 13.3 9.2 2.3 -2.4 8.5 AVERAGE OF MAXIMUM TEMPERATURE IN C. 12.9 12.8 14.5 20.2 26.0 33.4 34.9 34.2 29.1 20.4 15.8 10.3 22.0 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.6 10.4 11.1 12.5 14.7 17.1 17.6 15.8 15.8 11.2 13.5 12.7 13.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.78 3.73 4.37 5.56 6.86 7.89 9.69 8.70 7.47 6.93 3.85 2.74 5.97 MEAN OF MIXING RATIO AT 09 GMT. 3.95 4.08 4.29 4.77 6.32 6.58 7.91 7.21 6.88 7.13 3.59 3.75 5.54 MEAN OF MIXING RATIO AT 15 GMT. 3.92 3.98 4.38 4.97 6.74 7.57 8.58 7.96 7.27 7.04 3.48 2.94 5.74 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -4.2 -1.4 -2.5 2.6 4.0 11.5 13.0 14.5 10.0 6.5 -3.0 -8.0 -8.0 DAY 14 7 3 4 18 21 2 8 28 17 29 23 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.8 20.4 20.2 26.8 32.0 36.5 38.5 37.0 34.8 25.4 20.5 16.0 38.5 DAY 9 26 9 16 25 13 14 4 10 9 1 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 7.4 13.8 13.4 5.3 4.0 0.0 0.0 0.0 8.2 10.2 0.0 6.4 13.8 DAY 31 2 1 18 6 ** ** ** 30 10 ** 26 MONTHLY TOTAL PRECIPITATION IN MM. 15.4 15.6 57.4 19.1 8.0 0.0 0.0 0.0 8.2 25.6 0.0 16.8 166.1 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 53.2 16.3 4.9 25.5 NO. OF DAYS WITH PRECIPITATION. 6 2 8 8 3 0 0 0 1 5 0 4 37 NO. OF DAYS PRECIPITATION EQUAL 4 2 8 8 3 0 0 0 1 5 0 4 35 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 2 0 0 0 0 0 0 1 0 0 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 64 62 68 60 56 47 58 45 55 69 57 63 59 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 41 44 43 31 30 19 23 21 28 46 29 45 33 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 53 53 54 41 38 27 29 28 35 54 38 44 41 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 1 0 0 0 0 0 0 0 0 0 0 7 8 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 2 6 0 0 0 0 10 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 30 31 31 13 0 0 0 108 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. 5 7 6 0 0 0 0 0 0 0 8 26 52 DATE OF START AND END FREEZING START = 14 NOV. END = 24 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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.***** 0.4 ***** 12.2 18.9 ***** ***** 28.2 21.9 15.9 9.4 ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -5.6 -5.4 -1.0 5.5 11.9 17.0 19.9 20.6 13.7 9.9 2.4 -4.7 7.0 AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** 6.3 ***** 18.8 26.0 ***** ***** 35.8 30.1 22.0 16.5 ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** 11.7 ***** 13.3 14.1 ***** ***** 15.2 16.4 12.1 14.1 ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.58 2.83 3.27 4.96 6.32 4.66 6.13 8.15 7.40 6.86 3.91 2.82 4.99 MEAN OF MIXING RATIO AT 09 GMT. 3.52 3.36 2.43 3.89 6.10 4.93 7.37 9.74 6.28 7.08 3.70 3.41 5.15 MEAN OF MIXING RATIO AT 15 GMT. 3.03 2.95 2.32 3.77 5.36 4.65 6.66 8.85 7.26 7.58 5.33 3.10 5.07 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -12.0 -15.0 -7.0 -8.0 4.5 6.5 10.0 16.5 10.0 6.5 -5.0 -8.0 -15.0 DAY 31 3 9 1 1 5 21 20 28 17 29 2 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** 10.5 ***** 25.0 31.0 ***** ***** 38.5 35.5 25.5 23.0 ***** ****** DAY ** 13 ** 23 28 ** ** 8 4 9 3 ** 24 HOUR MAXIMUM PRECIPITATION IN MM. 5.2 6.2 5.1 6.0 22.8 0.0 0.0 0.0 0.0 4.2 9.2 8.4 22.8 DAY 30 22 29 25 18 ** ** ** ** 12 13 3 MONTHLY TOTAL PRECIPITATION IN MM. 12.5 24.0 10.1 17.2 32.6 0.0 0.0 0.0 0.0 4.2 18.2 8.4 127.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 36.6 39.2 0.0 24.2 NO. OF DAYS WITH PRECIPITATION. 3 9 3 5 4 0 0 0 0 1 2 1 28 NO. OF DAYS PRECIPITATION EQUAL 3 7 3 5 4 0 0 0 0 1 2 1 26 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 0 1 0 0 0 0 0 0 0 1 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 72 76 62 56 45 26 30 37 54 68 59 72 55 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 49 55 24 27 29 15 18 24 26 45 29 41 32 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 60 61 33 32 30 20 23 31 35 58 55 57 41 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 24 16 7 1 0 0 0 0 0 0 1 21 70 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 8 18 17 0 0 0 0 43 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** 0 *** 0 0 *** *** 0 0 0 0 *** *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** 0 *** 0 5 *** *** 31 15 0 0 *** *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** 0 *** 0 0 *** *** 0 0 0 0 *** *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** 0 *** 0 0 *** *** 0 0 0 0 *** *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 28 27 20 2 0 0 0 0 0 0 11 31 119 DATE OF START AND END FREEZING START = 14 NOV. END = 3 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. -0.1 2.7 8.7 12.5 19.3 ***** 27.1 27.1 22.5 16.0 ***** ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -7.1 -3.9 2.7 6.5 12.6 14.9 18.6 19.0 14.1 8.9 1.3 -4.9 6.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.3 8.3 14.4 18.8 26.2 ***** 36.0 35.2 30.6 22.7 ***** ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.4 12.2 11.7 12.3 13.6 ***** 17.4 16.2 16.5 13.8 ***** ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.61 3.37 4.90 6.04 8.80 9.27 9.18 9.15 7.03 7.20 5.74 2.83 6.34 MEAN OF MIXING RATIO AT 09 GMT. 3.67 5.06 4.79 7.63 9.17 8.51 10.60 7.74 7.49 7.78 4.69 4.32 6.79 MEAN OF MIXING RATIO AT 15 GMT. 3.34 4.92 5.39 7.05 10.00 11.82 15.01 10.05 9.09 10.11 6.69 3.75 8.10 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -10.0 -11.5 -3.5 1.5 6.5 7.0 14.5 16.0 10.5 4.5 -4.0 -14.0 -14.0 DAY 20 7 24 4 30 9 2 14 7 13 14 29 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 10.5 12.5 24.5 22.5 29.5 ***** 37.5 36.5 35.5 26.5 ***** ***** ****** DAY 1 17 20 30 22 ** 5 8 11 1 ** ** 24 HOUR MAXIMUM PRECIPITATION IN MM. 11.4 15.2 13.8 20.2 18.0 6.8 0.0 0.0 3.8 6.2 12.2 9.8 20.2 DAY 1 3 17 25 30 23 ** ** 17 30 13 18 MONTHLY TOTAL PRECIPITATION IN MM. 29.0 32.2 34.4 45.8 49.2 16.0 0.0 0.0 3.8 11.0 60.7 39.6 321.7 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 29.7 34.5 1.2 34.6 NO. OF DAYS WITH PRECIPITATION. 3 4 3 3 7 4 0 0 1 2 9 7 43 NO. OF DAYS PRECIPITATION EQUAL 3 4 3 3 7 4 0 0 1 2 9 7 43 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 2 2 2 2 0 0 0 0 0 1 0 10 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 73 76 71 69 68 65 49 48 48 73 75 69 65 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 54 71 45 45 40 24 25 22 31 48 37 55 41 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 75 81 59 57 59 48 50 35 41 72 75 69 60 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 26 16 0 0 0 0 0 0 0 0 3 18 63 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 5 4 0 0 0 0 9 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 1 0 0 0 *** 0 0 0 0 *** *** *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 *** 17 30 13 0 *** *** *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 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 *** *** *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 31 20 9 0 0 0 0 0 0 0 14 31 105 DATE OF START AND END FREEZING START = 11 NOV. END = 28 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. -4.2 0.5 7.3 13.2 20.0 23.8 ***** ***** ***** ***** ***** ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -9.9 -4.0 1.6 7.2 13.0 15.4 ***** ***** ***** ***** ***** ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 1.5 5.1 13.1 19.2 27.0 32.2 ***** ***** ***** ***** ***** ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.4 9.1 11.5 12.0 14.0 16.8 ***** ***** ***** ***** ***** ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.46 3.24 4.22 4.86 6.38 8.91 ***** ***** ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 09 GMT. 3.66 3.79 4.22 4.12 6.14 7.18 ***** ***** ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 15 GMT. 2.49 3.46 4.42 4.46 5.62 7.32 ***** ***** ***** ***** ***** ***** ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -14.8 -10.0 -8.0 -1.0 5.0 13.0 ***** ***** ***** ***** ***** ***** ****** DAY 20 2 23 5 1 17 ** ** ** ** ** ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 13.8 14.0 22.8 27.5 33.5 34.5 ***** ***** ***** ***** ***** ***** ****** DAY 3 28 11 27 30 4 ** ** ** ** ** ** 24 HOUR MAXIMUM PRECIPITATION IN MM. 9.4 5.2 22.2 10.2 8.2 0.0 ***** ***** ***** ***** ***** ***** ****** DAY 24 19 15 4 6 ** ** ** ** ** ** ** MONTHLY TOTAL PRECIPITATION IN MM. 43.8 13.2 98.1 30.0 20.8 0.0 ***** ***** ***** ***** ***** ***** ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 75.3 24.7 ***** ***** NO. OF DAYS WITH PRECIPITATION. 7 3 15 5 4 0 *** *** *** *** *** *** *** NO. OF DAYS PRECIPITATION EQUAL 7 3 15 5 4 0 *** *** *** *** *** *** *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 2 1 0 0 *** *** *** *** *** *** *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 87 80 75 60 45 61 *** *** *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 84 68 47 31 29 25 *** *** *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 81 73 58 40 31 28 *** *** *** *** *** *** *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 31 16 6 0 0 0 *** *** *** *** *** *** *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 *** *** *** *** *** *** *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 14 4 0 0 0 0 *** *** *** *** *** *** *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 4 29 *** *** *** *** *** *** *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 *** *** *** *** *** *** *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 *** *** *** *** *** *** *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 31 21 12 2 0 0 *** *** *** *** *** *** *** DATE OF START AND END FREEZING START = 1 JAN. END = 6 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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.***** ***** ***** ***** ***** ***** ***** 23.8 19.1 15.9 11.7 3.8 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** 13.2 9.3 7.8 5.2 -0.9 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** 34.4 28.9 24.0 18.3 8.5 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** ***** ***** ***** ***** ***** ***** 21.2 19.6 16.2 13.1 9.4 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** ***** ***** ***** ***** ***** ***** 15.88 13.34 11.81 7.46 4.50 ***** MEAN OF MIXING RATIO AT 09 GMT. ***** ***** ***** ***** ***** ***** ***** 22.77 19.87 14.99 10.88 6.30 ***** MEAN OF MIXING RATIO AT 15 GMT. ***** ***** ***** ***** ***** ***** ***** 23.00 18.69 12.77 10.93 6.07 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** 7.5 2.5 2.5 0.7 -6.0 ****** DAY ** ** ** ** ** ** ** 30 13 25 30 18 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** 37.0 34.0 32.0 24.5 16.0 ****** DAY ** ** ** ** ** ** ** 4 3 1 1 6 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** 9.4 0.0 0.0 0.0 14.5 17.5 ****** DAY ** ** ** ** ** ** 26 ** ** ** 28 13 MONTHLY TOTAL PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** 13.0 0.0 0.0 0.0 18.0 36.9 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION ***** ***** 19.1 80.9 NO. OF DAYS WITH PRECIPITATION. *** *** *** *** *** *** 3 0 0 0 3 5 *** NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** 2 0 0 0 2 3 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** 0 0 0 0 1 2 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** *** *** *** *** *** *** 81 82 80 82 87 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** *** *** *** *** *** *** 67 73 71 75 84 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** *** *** *** *** *** *** 81 88 89 90 95 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** 0 0 0 0 4 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** 0 0 0 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** 0 0 0 0 0 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** 28 14 2 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** 0 0 0 0 0 *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** 0 0 0 0 0 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. *** *** *** *** *** *** *** 0 0 0 0 23 *** DATE OF START AND END FREEZING START = 1 DEC. END = 31 DEC. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. 1.7 3.1 11.7 12.4 20.2 21.4 26.0 24.9 20.4 13.9 9.0 4.0 14.0 AVERAGE OF MINIMUM TEMPERATURE IN C. -3.9 -2.0 5.9 6.4 12.6 12.2 17.3 15.8 11.1 5.3 2.9 -0.7 6.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.2 8.2 17.7 18.4 27.7 30.7 34.7 34.0 29.6 22.5 15.0 8.6 21.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.1 10.2 11.8 12.0 15.1 18.5 17.4 18.2 18.5 17.2 12.1 9.3 14.3 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.59 4.48 7.60 8.54 13.40 9.67 11.47 11.70 10.01 7.40 6.40 4.13 8.20 MEAN OF MIXING RATIO AT 09 GMT. 5.18 5.89 8.18 10.22 18.88 11.38 11.23 12.96 11.60 8.45 8.10 4.88 9.75 MEAN OF MIXING RATIO AT 15 GMT. 5.22 5.73 9.44 10.32 15.95 12.15 13.99 14.20 11.98 8.57 7.47 4.64 9.97 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -8.0 -10.6 -1.5 -2.0 9.5 8.0 12.5 12.5 7.0 2.0 0.0 -7.5 -10.6 DAY 19 15 1 3 13 4 28 8 17 12 5 21 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.5 17.0 28.0 24.5 31.0 36.0 38.5 37.5 36.5 26.5 21.0 15.7 38.5 DAY 7 21 20 27 27 15 6 27 9 8 4 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 8.5 12.7 7.0 23.5 4.3 0.0 0.0 2.0 0.0 3.0 19.0 14.5 23.5 DAY 17 14 11 3 19 ** ** 1 ** 26 19 30 MONTHLY TOTAL PRECIPITATION IN MM. 20.0 27.6 17.5 78.1 10.3 0.0 0.0 3.7 0.0 4.5 40.8 27.5 230.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 28.3 38.4 1.6 31.7 NO. OF DAYS WITH PRECIPITATION. 5 7 6 10 9 0 1 2 0 2 8 4 54 NO. OF DAYS PRECIPITATION EQUAL 4 5 5 10 4 0 0 2 0 2 5 4 41 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 0 3 0 0 0 0 0 0 2 1 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 84 85 77 83 84 59 52 60 56 64 79 75 72 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 74 79 67 71 73 40 32 39 42 47 70 63 58 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 90 86 78 84 84 54 50 51 58 60 74 67 70 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 14 7 0 0 0 0 0 0 0 0 0 7 28 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 4 0 0 0 0 0 4 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 1 1 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 5 21 30 29 14 0 0 0 99 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 18 6 2 0 0 0 0 0 0 2 17 70 DATE OF START AND END FREEZING START = 5 NOV. END = 4 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. -4.0 -3.1 5.1 14.0 14.7 21.9 25.3 22.9 21.9 18.6 9.0 -1.4 12.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -7.4 -7.7 -0.3 7.2 7.7 13.6 16.2 14.1 12.1 9.7 1.8 -5.7 5.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. -0.6 1.5 10.5 20.9 21.6 30.3 34.3 31.7 31.7 27.6 16.2 2.9 19.0 DIFFERENCE BETWEEN AVERAGE MAXIMUM 6.8 9.2 10.8 13.7 13.9 16.6 18.1 17.6 19.6 17.9 14.4 8.6 13.9 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.55 2.75 4.40 7.19 8.32 11.14 10.58 9.79 8.30 6.40 4.47 2.97 6.57 MEAN OF MIXING RATIO AT 09 GMT. 3.45 3.83 5.60 7.90 9.92 14.91 10.10 7.87 7.70 6.13 4.89 3.86 7.18 MEAN OF MIXING RATIO AT 15 GMT. 2.99 3.33 5.32 8.78 10.35 14.58 15.13 12.77 10.52 8.49 5.62 3.54 8.45 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -17.5 -15.5 -7.0 1.5 2.0 8.5 12.5 8.5 8.0 6.0 -2.0 -16.5 -17.5 DAY 24 3 20 6 11 17 29 29 8 26 18 25 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 7.5 10.0 18.5 27.0 27.5 36.5 38.5 37.0 38.5 33.5 20.5 8.0 38.5 DAY 18 28 30 29 28 29 20 16 6 3 1 4 24 HOUR MAXIMUM PRECIPITATION IN MM. 11.5 20.0 20.0 4.0 20.5 2.4 0.0 0.0 0.0 0.0 15.0 46.0 46.0 DAY 7 8 18 23 9 27 ** ** ** ** 4 1 MONTHLY TOTAL PRECIPITATION IN MM. 29.0 41.0 62.0 17.9 70.5 2.4 0.0 0.0 0.0 0.0 21.0 102.0 345.8 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 38.2 26.3 0.0 35.6 NO. OF DAYS WITH PRECIPITATION. 8 3 6 6 9 1 0 2 0 0 3 8 46 NO. OF DAYS PRECIPITATION EQUAL 7 3 5 6 9 1 0 0 0 0 3 8 42 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 2 3 0 2 0 0 0 0 0 1 3 12 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 85 83 75 67 80 72 61 63 57 55 65 82 70 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 88 83 68 46 54 52 28 27 28 26 39 78 51 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 80 85 73 64 77 68 55 56 53 51 62 78 67 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 27 24 4 0 0 0 0 0 0 0 0 18 73 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 1 1 0 0 0 0 3 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 20 13 0 0 0 0 0 0 0 0 0 8 41 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 18 30 24 25 7 0 0 104 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 20 0 0 0 0 0 0 0 7 31 116 DATE OF START AND END FREEZING START = 9 NOV. END = 28 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. -4.2 5.2 8.5 13.2 18.4 24.0 26.3 26.5 21.6 17.7 8.1 3.1 14.0 AVERAGE OF MINIMUM TEMPERATURE IN C. -9.7 -0.8 1.1 5.0 8.9 12.8 15.4 16.4 11.6 8.4 -1.0 -5.2 5.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 1.3 11.2 15.9 21.5 28.0 35.2 37.3 36.7 31.6 27.0 17.3 11.5 22.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.0 12.0 14.8 16.5 19.1 22.4 21.9 20.3 20.0 18.6 18.3 16.7 17.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.42 3.86 3.56 4.61 6.56 8.47 10.05 9.35 8.18 5.43 3.31 2.67 5.70 MEAN OF MIXING RATIO AT 09 GMT. 3.54 4.95 4.82 5.93 7.02 8.59 11.22 11.47 ***** 6.24 4.22 4.17 ***** MEAN OF MIXING RATIO AT 15 GMT. 3.41 5.38 5.09 5.88 8.57 10.02 13.54 10.77 9.51 7.36 4.29 4.09 7.32 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -16.5 -10.0 -6.5 0.0 1.5 7.0 11.5 12.0 4.0 1.5 -9.5 -10.0 -16.5 DAY 3 7 9 13 5 9 1 16 27 31 8 15 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 7.0 21.0 24.0 30.5 35.0 41.5 42.5 41.5 36.5 32.0 26.5 19.0 42.5 DAY 13 28 2 28 27 27 29 2 1 6 2 5 24 HOUR MAXIMUM PRECIPITATION IN MM. 9.0 28.0 11.0 20.0 3.0 0.0 0.0 0.0 0.0 0.0 2.0 14.0 28.0 DAY 23 21 29 17 11 ** ** ** ** ** 22 30 MONTHLY TOTAL PRECIPITATION IN MM. 27.0 45.5 11.0 33.5 3.0 0.0 0.0 0.0 0.0 0.0 2.0 21.0 143.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 58.4 25.5 0.0 16.1 NO. OF DAYS WITH PRECIPITATION. 5 6 3 7 3 0 0 0 0 0 1 4 29 NO. OF DAYS PRECIPITATION EQUAL 5 5 1 3 1 0 0 0 0 0 1 4 20 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 1 2 0 0 0 0 0 0 0 1 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 88 75 58 53 58 58 59 51 64 49 60 72 62 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 82 61 46 39 31 26 34 30 *** 28 33 54 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 89 74 55 48 51 46 51 43 50 45 47 69 56 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 29 8 3 0 0 0 0 0 0 0 13 24 77 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 2 2 0 0 0 0 4 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 12 0 0 0 0 0 0 0 0 0 0 0 12 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 2 8 25 31 31 24 7 0 0 128 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 3 7 2 0 0 0 0 12 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 16 13 1 0 0 0 0 0 0 19 31 111 DATE OF START AND END FREEZING START = 6 NOV. END = 13 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. -1.7 -1.8 6.8 12.3 20.6 24.1 25.2 24.6 21.4 14.5 10.7 -0.9 13.0 AVERAGE OF MINIMUM TEMPERATURE IN C. -7.4 -8.0 1.5 5.0 11.4 13.3 15.4 14.3 11.6 5.0 2.8 -5.9 4.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 4.0 4.4 12.1 19.6 29.7 34.9 34.9 34.9 31.2 24.1 18.6 4.2 21.0 DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.4 12.4 10.6 14.6 18.3 21.6 19.5 20.6 19.6 19.1 15.8 10.1 16.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.59 2.54 4.88 5.45 8.83 10.10 10.67 9.64 8.55 5.06 4.34 3.04 6.31 MEAN OF MIXING RATIO AT 09 GMT. 4.44 4.63 7.02 8.79 11.56 16.98 17.54 12.10 11.61 6.62 5.79 3.65 9.23 MEAN OF MIXING RATIO AT 15 GMT. 3.45 3.74 6.03 7.24 10.84 13.85 14.57 11.62 10.74 6.52 4.96 3.55 8.09 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -12.5 -15.0 -7.0 -4.0 4.0 10.0 11.0 10.0 8.0 1.5 -3.0 -13.0 -15.0 DAY 30 4 6 2 1 4 22 26 25 22 27 24 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 10.0 14.0 23.0 28.0 35.0 40.0 41.0 38.0 35.0 27.5 26.0 14.0 41.0 DAY 12 24 19 23 23 20 1 14 9 21 3 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 11.0 22.0 7.0 16.0 4.0 5.0 9.0 0.0 2.0 0.0 3.0 22.0 22.0 DAY 16 19 17 1 15 12 8 ** 7 ** 24 23 MONTHLY TOTAL PRECIPITATION IN MM. 33.0 84.0 28.0 49.0 4.0 5.0 17.0 0.0 2.0 0.0 5.0 51.0 278.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 52.2 20.9 6.8 20.1 NO. OF DAYS WITH PRECIPITATION. 5 6 6 7 1 1 4 0 1 0 2 4 37 NO. OF DAYS PRECIPITATION EQUAL 5 6 6 7 1 1 4 0 1 0 2 4 37 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 4 0 2 0 0 0 0 0 0 0 2 9 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 85 85 78 65 64 64 66 60 66 56 64 80 69 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 90 89 78 66 56 61 52 39 47 40 46 71 61 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 89 89 79 62 62 60 60 51 55 51 50 83 66 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 29 23 5 1 0 0 0 0 0 0 0 24 82 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 2 0 0 0 0 0 2 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 4 0 0 0 0 0 0 0 0 0 6 10 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 20 29 31 30 23 0 0 0 133 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 3 0 0 0 0 0 4 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 31 25 16 5 0 0 0 0 0 0 4 30 111 DATE OF START AND END FREEZING START = 23 NOV. END = 14 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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 1.5 6.6 15.4 17.1 24.9 29.0 26.2 21.4 15.7 7.0 0.2 13.7 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.2 -3.1 -0.1 7.2 9.3 15.8 18.9 16.6 11.6 5.4 0.1 -5.0 5.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 4.6 6.2 13.3 23.6 25.0 34.1 39.0 35.7 31.3 26.0 13.9 5.5 21.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.8 9.3 13.4 16.4 15.7 18.3 20.1 19.1 19.6 20.6 13.8 10.5 15.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.99 3.39 4.10 6.78 9.24 15.10 14.78 13.43 9.24 5.85 3.61 2.18 7.56 MEAN OF MIXING RATIO AT 09 GMT. 3.87 4.05 5.48 9.61 11.24 25.23 24.29 27.02 14.20 5.51 4.68 3.27 11.54 MEAN OF MIXING RATIO AT 15 GMT. 3.81 4.26 5.58 8.77 10.66 15.07 17.02 15.10 11.88 6.20 4.31 2.79 8.79 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -9.0 -11.0 -7.5 3.0 5.0 12.0 16.0 13.0 8.0 1.0 -4.0 -9.0 -11.0 DAY 30 13 9 25 19 9 6 21 24 27 8 22 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 8.0 13.0 23.0 29.0 30.5 37.0 41.0 38.0 34.0 30.5 23.0 11.0 41.0 DAY 11 23 26 7 30 20 1 1 2 11 2 21 24 HOUR MAXIMUM PRECIPITATION IN MM. 26.0 19.0 14.0 16.0 20.0 0.0 0.0 0.0 0.0 0.0 13.9 10.7 26.0 DAY 3 21 8 23 12 ** ** ** ** ** 29 2 MONTHLY TOTAL PRECIPITATION IN MM. 41.2 69.0 27.0 38.4 43.3 0.0 0.0 0.0 0.0 0.0 33.2 52.3 304.4 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 45.1 26.8 0.0 28.1 NO. OF DAYS WITH PRECIPITATION. 5 7 4 6 7 0 0 0 0 0 7 14 50 NO. OF DAYS PRECIPITATION EQUAL 5 7 4 6 5 0 0 0 0 0 7 11 45 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 3 1 1 1 0 0 0 0 0 1 1 9 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 84 82 76 67 74 71 66 74 68 65 61 56 70 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 78 80 65 64 64 72 59 67 54 31 51 62 62 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 83 72 65 69 75 72 63 63 58 51 57 61 66 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 23 13 9 0 0 0 0 0 0 0 2 23 70 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 3 1 0 0 0 0 5 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 1 1 0 0 0 0 0 0 0 0 0 3 5 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 3 30 31 31 26 4 0 0 125 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 12 0 0 0 0 0 12 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 21 17 0 0 0 0 0 0 0 15 31 115 DATE OF START AND END FREEZING START = 5 NOV. END = 31 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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.***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 09 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 15 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MONTHLY TOTAL PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION ***** ***** ***** ***** NO. OF DAYS WITH PRECIPITATION. *** *** *** *** *** *** *** *** *** *** *** *** *** NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. *** *** *** *** *** *** *** *** *** *** *** *** *** DATE OF START AND END FREEZING START = ** **** END = ** **** IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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.***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 09 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 15 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MONTHLY TOTAL PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION ***** ***** ***** ***** NO. OF DAYS WITH PRECIPITATION. *** *** *** *** *** *** *** *** *** *** *** *** *** NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. *** *** *** *** *** *** *** *** *** *** *** *** *** DATE OF START AND END FREEZING START = ** **** END = ** **** IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. 1.2 4.6 9.0 13.8 17.8 21.6 25.6 24.5 22.8 17.0 4.5 6.0 14.0 AVERAGE OF MINIMUM TEMPERATURE IN C. -4.3 -1.5 2.7 6.1 9.6 12.9 17.0 15.6 14.2 9.7 -1.3 1.6 6.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 6.6 10.7 15.2 21.4 26.1 30.3 34.2 33.3 31.3 24.4 10.3 10.3 21.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.9 12.2 12.5 15.3 16.5 17.4 17.2 17.7 17.1 14.7 11.6 8.7 14.3 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.02 3.52 3.88 4.74 6.72 7.40 8.47 8.92 6.86 6.08 3.31 4.47 5.62 MEAN OF MIXING RATIO AT 09 GMT. 3.57 3.87 4.29 4.47 5.88 6.76 7.56 6.65 5.23 5.32 3.61 4.55 5.15 MEAN OF MIXING RATIO AT 15 GMT. 3.45 3.88 4.10 4.18 5.75 6.17 8.00 6.58 5.29 5.37 3.27 4.08 5.01 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -16.2 -6.5 -3.0 -1.2 1.6 7.0 11.0 11.8 10.0 6.2 -6.0 -5.4 -16.2 DAY 16 6 8 16 4 3 3 21 28 26 24 24 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 12.6 16.5 21.6 26.3 30.6 36.4 38.7 36.0 34.5 27.5 15.0 15.4 38.7 DAY 2 21 31 24 27 30 1 14 13 8 1 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 11.8 9.2 10.5 7.2 1.0 2.7 0.0 0.0 0.0 2.0 10.3 16.4 16.4 DAY 21 23 13 19 30 21 ** ** ** 31 11 8 MONTHLY TOTAL PRECIPITATION IN MM. 33.0 17.6 43.3 10.2 1.9 6.8 0.0 0.0 0.0 3.2 16.2 51.4 183.6 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 51.1 10.3 0.0 38.6 NO. OF DAYS WITH PRECIPITATION. 8 6 8 7 2 4 0 0 0 2 3 10 50 NO. OF DAYS PRECIPITATION EQUAL 6 4 8 2 1 3 0 0 0 2 3 8 37 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 0 2 0 0 0 0 0 0 0 1 1 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 78 77 67 61 65 60 53 62 52 65 75 83 67 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 56 50 45 31 30 27 24 21 18 27 46 56 36 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 70 56 44 28 30 24 24 21 21 37 54 62 39 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 12 7 0 0 0 0 0 0 0 0 7 2 28 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 3 0 0 0 0 0 3 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 5 0 0 0 0 0 0 0 0 0 0 0 5 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 6 21 29 31 25 0 0 0 112 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 20 8 2 0 0 0 0 0 0 20 10 88 DATE OF START AND END FREEZING START = 3 NOV. END = 16 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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.***** ***** 6.9 15.2 16.5 21.5 27.3 23.9 22.4 17.2 9.4 2.1 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** ***** 1.1 8.6 9.5 12.9 19.0 15.5 14.0 9.6 1.6 -2.9 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** ***** 12.7 21.8 23.5 30.2 35.6 32.4 30.8 24.7 17.1 7.1 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** ***** 11.6 13.2 14.0 17.3 16.6 16.9 16.8 15.1 15.5 10.0 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** ***** 4.11 5.41 7.02 8.16 8.99 7.08 6.84 5.61 3.35 3.54 ***** MEAN OF MIXING RATIO AT 09 GMT. ***** ***** 4.19 5.15 6.40 7.04 7.61 6.44 6.21 5.25 3.78 4.04 ***** MEAN OF MIXING RATIO AT 15 GMT. ***** ***** 4.14 5.16 5.83 6.68 6.64 6.72 6.49 5.50 3.96 3.92 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** ***** -7.4 -0.2 -1.0 9.6 14.0 13.0 8.0 3.7 -4.0 -7.0 ****** DAY ** ** 2 29 1 12 20 3 27 31 21 22 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** ***** 20.6 29.0 28.8 35.8 38.0 35.0 35.4 29.6 25.0 15.0 ****** DAY ** ** 18 5 23 30 9 17 10 12 2 12 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** ***** 32.5 3.8 9.0 7.4 0.0 0.0 0.0 2.5 4.3 33.4 ****** DAY ** ** 27 26 6 1 ** ** ** 24 4 16 MONTHLY TOTAL PRECIPITATION IN MM. ***** ***** 71.0 7.8 18.4 20.6 0.0 0.0 0.0 2.6 9.7 63.1 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 36.7 24.2 0.0 39.0 NO. OF DAYS WITH PRECIPITATION. *** *** 10 8 14 10 0 0 0 2 7 11 *** NO. OF DAYS PRECIPITATION EQUAL *** *** 8 2 5 5 0 0 0 1 3 7 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** *** 2 0 0 0 0 0 0 0 0 2 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** *** 76 59 69 65 50 47 49 60 55 82 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** *** 47 32 36 27 21 21 23 26 32 62 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** *** 53 37 39 28 20 25 29 38 44 74 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** 7 0 0 0 0 0 0 0 1 10 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** 0 0 0 0 9 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 17 31 28 17 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. *** *** 11 1 1 0 0 0 0 0 11 26 *** DATE OF START AND END FREEZING START = 20 NOV. END = 1 MAY IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. -1.4 0.2 7.7 14.7 18.1 22.9 26.9 25.2 21.1 14.3 9.7 4.8 13.7 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.4 -3.9 2.0 7.7 10.1 14.1 18.2 16.6 12.5 6.8 4.1 -0.6 6.8 AVERAGE OF MAXIMUM TEMPERATURE IN C. 2.7 4.4 13.4 21.6 26.2 31.7 35.5 33.8 29.7 21.8 15.4 10.2 20.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.1 8.3 11.4 13.9 16.1 17.6 17.3 17.2 17.2 15.0 11.3 10.8 13.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.91 3.20 4.59 5.67 7.19 7.57 8.51 9.71 6.66 5.58 5.25 3.56 5.86 MEAN OF MIXING RATIO AT 09 GMT. 3.38 4.05 4.61 5.30 6.63 6.52 6.86 7.98 5.38 5.75 5.62 3.49 5.46 MEAN OF MIXING RATIO AT 15 GMT. 3.30 3.98 4.20 5.00 6.31 6.45 7.58 7.12 5.61 5.35 5.38 3.91 5.35 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -13.2 -12.8 -4.2 0.0 4.6 9.3 14.6 12.5 5.0 1.8 -2.5 -5.4 -13.2 DAY 25 1 7 18 7 1 4 30 23 22 26 13 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 8.0 11.0 21.0 27.4 32.0 35.4 37.5 36.5 35.0 30.4 20.8 17.0 37.5 DAY 5 17 29 22 22 21 20 24 4 4 13 5 24 HOUR MAXIMUM PRECIPITATION IN MM. 5.7 11.5 10.0 11.2 3.1 0.6 0.0 0.1 0.0 9.0 7.7 9.2 11.5 DAY 16 25 16 3 16 27 ** 11 ** 21 10 18 MONTHLY TOTAL PRECIPITATION IN MM. 32.8 54.8 47.4 25.7 8.5 0.6 0.0 0.1 0.0 18.7 21.7 21.5 231.8 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 58.2 15.0 0.0 26.7 NO. OF DAYS WITH PRECIPITATION. 12 13 14 14 6 1 1 1 1 10 10 5 88 NO. OF DAYS PRECIPITATION EQUAL 8 9 10 7 3 0 0 0 0 4 7 3 51 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 2 2 1 0 0 0 0 0 0 0 0 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 88 89 81 59 63 51 44 62 52 72 82 79 69 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 70 75 47 34 32 22 19 24 21 37 49 44 40 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 80 82 51 36 32 23 22 24 25 45 61 63 45 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 19 10 3 0 0 0 0 0 0 0 0 4 36 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 3 2 0 0 0 0 5 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 9 3 0 0 0 0 0 0 0 0 0 0 12 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 6 22 31 30 14 1 0 0 104 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 25 10 1 0 0 0 0 0 0 2 21 89 DATE OF START AND END FREEZING START = 26 NOV. END = 18 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. 2.0 4.6 9.6 12.4 16.6 21.4 25.5 25.0 21.2 14.7 9.4 ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -2.8 -0.6 3.8 5.9 9.3 13.6 17.4 17.0 12.7 8.2 2.9 ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 6.8 9.8 15.4 18.9 24.0 29.3 33.6 33.0 29.7 21.3 16.2 ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.6 10.4 11.6 13.0 14.7 15.7 16.2 16.0 17.0 13.1 13.3 ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.24 3.64 4.78 5.79 6.91 8.95 10.05 9.72 6.43 6.11 3.51 ***** ***** MEAN OF MIXING RATIO AT 09 GMT. 3.71 3.93 4.49 5.48 6.43 7.29 7.97 7.98 5.08 5.94 3.48 ***** ***** MEAN OF MIXING RATIO AT 15 GMT. 3.66 4.03 4.32 5.83 6.29 7.65 7.99 7.81 5.83 6.16 3.60 ***** ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -10.0 -4.8 -3.0 -5.4 2.2 9.0 12.9 14.0 6.4 5.0 -3.0 ***** ****** DAY 2 24 5 2 3 7 22 26 24 18 24 ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 10.4 14.9 22.2 27.6 32.9 33.5 38.0 35.1 34.0 26.6 22.5 ***** ****** DAY 9 19 20 25 27 30 18 8 14 4 2 ** 24 HOUR MAXIMUM PRECIPITATION IN MM. 9.8 9.0 15.2 10.8 8.2 7.3 1.6 0.0 0.0 3.3 11.0 ***** ****** DAY 12 20 3 1 6 23 21 ** ** 17 30 ** MONTHLY TOTAL PRECIPITATION IN MM. 40.4 34.5 44.5 42.2 21.5 16.7 1.6 0.0 0.0 12.5 12.4 ***** ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 52.8 35.5 0.7 11.0 NO. OF DAYS WITH PRECIPITATION. 10 11 17 12 11 12 2 1 1 8 8 *** *** NO. OF DAYS PRECIPITATION EQUAL 6 7 9 9 5 5 1 0 0 5 2 *** *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 1 1 0 0 0 0 0 0 1 *** *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 83 80 76 72 66 67 59 60 52 71 57 *** *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 61 51 44 41 36 28 25 25 19 37 29 *** *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 68 60 46 47 38 31 25 25 26 51 39 *** *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 11 3 0 1 0 0 0 0 0 0 0 *** *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 6 4 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 2 12 29 31 17 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. 24 20 5 3 0 0 0 0 0 0 9 *** *** DATE OF START AND END FREEZING START = 7 NOV. END = 3 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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.***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 09 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 15 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MONTHLY TOTAL PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION ***** ***** ***** ***** NO. OF DAYS WITH PRECIPITATION. *** *** *** *** *** *** *** *** *** *** *** *** *** NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. *** *** *** *** *** *** *** *** *** *** *** *** *** DATE OF START AND END FREEZING START = ** **** END = ** **** IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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.***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 09 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 15 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MONTHLY TOTAL PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION ***** ***** ***** ***** NO. OF DAYS WITH PRECIPITATION. *** *** *** *** *** *** *** *** *** *** *** *** *** NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. *** *** *** *** *** *** *** *** *** *** *** *** *** DATE OF START AND END FREEZING START = ** **** END = ** **** IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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.***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 09 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 15 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MONTHLY TOTAL PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION ***** ***** ***** ***** NO. OF DAYS WITH PRECIPITATION. *** *** *** *** *** *** *** *** *** *** *** *** *** NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. *** *** *** *** *** *** *** *** *** *** *** *** *** DATE OF START AND END FREEZING START = ** **** END = ** **** IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. 0.8 3.8 5.1 14.6 20.0 24.8 26.0 24.2 23.1 15.5 10.7 4.9 14.5 AVERAGE OF MINIMUM TEMPERATURE IN C. -4.2 -1.8 -0.9 7.7 12.1 15.5 16.9 16.2 14.6 8.1 4.5 0.2 7.4 AVERAGE OF MAXIMUM TEMPERATURE IN C. 5.7 9.4 11.2 21.6 27.9 34.0 35.3 32.2 31.8 22.9 17.0 9.4 21.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.9 11.2 12.1 13.9 15.8 18.5 18.4 16.0 17.2 14.8 12.5 9.2 14.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.36 3.19 3.73 5.48 6.52 8.36 9.39 8.34 6.21 4.89 5.10 3.78 5.70 MEAN OF MIXING RATIO AT 09 GMT. 4.20 3.00 3.86 4.60 4.93 6.68 8.20 7.01 4.82 4.72 5.72 4.14 5.16 MEAN OF MIXING RATIO AT 15 GMT. 3.91 3.17 3.87 5.07 5.60 7.07 8.06 7.15 4.74 4.72 5.56 4.24 5.26 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -14.0 -9.0 -10.5 1.0 5.6 11.0 12.9 12.5 9.2 1.2 0.8 -5.6 -14.0 DAY 4 24 9 17 5 10 29 29 21 31 21 31 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 12.5 17.4 20.8 27.7 34.5 39.0 37.9 35.6 35.8 29.5 23.0 15.0 39.0 DAY 28 15 18 22 31 27 7 6 3 1 4 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 25.0 17.0 4.0 4.3 0.2 0.0 0.0 0.2 0.0 1.0 20.0 19.0 25.0 DAY 23 2 20 28 3 ** ** 27 ** 13 26 18 MONTHLY TOTAL PRECIPITATION IN MM. 70.0 34.2 17.8 9.6 0.2 0.0 0.0 0.3 0.0 1.1 30.1 42.5 205.8 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 59.3 4.8 0.1 35.8 NO. OF DAYS WITH PRECIPITATION. 12 7 8 8 1 0 0 2 0 2 6 11 57 NO. OF DAYS PRECIPITATION EQUAL 10 6 7 3 0 0 0 0 0 1 4 8 39 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 2 0 0 0 0 0 0 0 0 1 1 6 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 83 72 76 64 51 54 60 55 46 58 78 78 65 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 70 42 48 28 20 21 24 24 17 27 51 58 36 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 78 51 53 37 28 24 25 26 20 35 60 69 42 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 15 8 11 0 0 0 0 0 0 0 0 3 37 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 6 1 0 0 0 0 9 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 2 0 3 0 0 0 0 0 0 0 0 0 5 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 6 26 30 27 23 0 0 0 112 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 20 14 0 0 0 0 0 0 0 0 15 72 DATE OF START AND END FREEZING START = 4 DEC. END = 14 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. 3.6 5.2 4.9 13.0 17.1 23.0 27.4 25.5 22.6 17.6 7.9 1.9 14.2 AVERAGE OF MINIMUM TEMPERATURE IN C. -2.6 -0.3 -0.7 7.2 10.6 15.0 19.4 17.9 14.6 11.2 3.8 -2.2 7.8 AVERAGE OF MAXIMUM TEMPERATURE IN C. 9.7 10.7 10.6 18.8 23.6 31.1 35.4 33.0 30.6 24.1 12.1 6.1 20.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.3 11.0 11.3 11.6 13.0 16.1 16.0 15.1 16.0 12.9 8.3 8.3 12.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.92 3.51 3.64 6.42 7.87 8.34 9.05 8.76 6.48 6.45 4.92 3.38 5.98 MEAN OF MIXING RATIO AT 09 GMT. 3.16 3.78 4.11 7.45 8.28 8.77 7.60 7.29 5.27 6.40 5.13 3.73 5.91 MEAN OF MIXING RATIO AT 15 GMT. 3.21 3.93 4.16 7.00 8.46 7.20 7.41 7.41 5.58 6.53 5.15 3.85 5.82 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -12.0 -5.0 -6.5 2.5 5.2 10.0 14.4 12.8 8.0 6.0 -3.2 -7.2 -12.0 DAY 24 3 3 21 18 21 2 5 30 25 21 12 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.6 18.0 18.2 22.2 30.0 37.6 38.2 37.4 32.6 30.0 23.0 11.4 38.2 DAY 9 28 6 15 25 30 10 1 3 3 2 29 24 HOUR MAXIMUM PRECIPITATION IN MM. 1.8 4.3 9.5 24.4 22.0 2.0 0.0 1.0 0.0 2.0 15.0 21.0 24.4 DAY 23 15 24 11 3 11 ** 5 ** 4 29 20 MONTHLY TOTAL PRECIPITATION IN MM. 3.5 15.6 46.5 58.3 60.2 2.7 0.0 1.3 0.0 6.9 39.3 31.0 265.3 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 24.7 45.7 0.5 29.1 NO. OF DAYS WITH PRECIPITATION. 4 8 10 10 11 2 0 2 0 7 10 6 70 NO. OF DAYS PRECIPITATION EQUAL 2 6 8 9 6 1 0 1 0 5 7 4 49 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 1 3 0 0 0 0 0 2 1 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 72 76 81 82 76 63 53 56 51 65 79 81 70 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 44 51 59 56 46 31 22 25 20 34 57 63 42 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 55 59 64 57 53 27 21 24 23 42 64 71 47 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 9 4 5 0 0 0 0 0 0 0 0 12 30 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 3 9 6 0 0 0 0 18 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 17 30 28 22 1 0 0 99 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 13 21 0 0 0 0 0 0 0 6 22 87 DATE OF START AND END FREEZING START = 12 NOV. END = 28 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. 4.9 6.3 7.8 13.2 20.4 25.0 26.2 26.4 21.6 11.8 10.1 5.0 14.9 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.8 0.8 3.1 6.5 13.6 16.8 18.4 18.6 13.9 6.7 4.5 0.9 8.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.6 11.8 12.4 19.8 27.2 33.2 34.0 34.3 29.2 17.0 15.7 9.2 21.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.4 11.0 9.3 13.3 13.6 16.4 15.6 15.7 15.3 10.3 11.2 8.3 12.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.10 3.79 4.46 5.01 8.20 8.31 8.38 8.91 7.69 5.99 4.36 4.01 6.02 MEAN OF MIXING RATIO AT 09 GMT. 3.33 4.31 4.61 5.19 8.02 6.77 7.25 7.31 6.64 6.05 4.35 4.16 5.67 MEAN OF MIXING RATIO AT 15 GMT. 3.29 4.08 4.48 5.42 7.87 6.91 7.14 6.96 6.32 6.30 4.67 4.27 5.64 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -4.4 -4.0 -3.0 -3.0 8.0 11.4 13.2 12.0 8.0 -0.5 -3.8 -5.4 -5.4 DAY 1 7 21 6 6 6 4 28 24 27 30 31 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 18.2 18.2 18.0 26.5 31.2 37.2 38.4 36.5 35.4 29.4 21.0 14.4 38.4 DAY 31 1 7 30 28 29 20 4 6 2 5 11 24 HOUR MAXIMUM PRECIPITATION IN MM. 3.0 15.0 25.0 16.0 8.0 1.0 3.4 0.0 0.2 22.0 8.4 16.0 25.0 DAY 26 27 4 4 20 20 26 ** 27 8 26 13 MONTHLY TOTAL PRECIPITATION IN MM. 4.8 45.2 93.7 25.7 19.2 1.0 4.1 0.0 0.2 97.3 8.4 34.4 334.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 43.0 13.7 1.3 41.9 NO. OF DAYS WITH PRECIPITATION. 4 8 10 6 7 1 2 0 1 14 1 8 62 NO. OF DAYS PRECIPITATION EQUAL 2 7 10 4 5 1 1 0 0 10 1 5 46 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 4 1 0 0 0 0 0 4 0 1 11 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 67 75 74 66 66 52 52 56 67 80 68 79 67 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 42 53 51 37 37 22 23 23 28 54 41 57 39 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 47 54 52 40 38 23 23 21 28 62 51 66 42 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 2 1 0 0 0 0 0 0 0 0 0 3 6 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 8 7 0 0 0 0 17 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 1 1 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 5 30 29 29 14 0 0 0 107 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. 22 11 7 3 0 0 0 0 0 1 4 12 60 DATE OF START AND END FREEZING START = 27 OCT. END = 21 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. 1.5 3.2 8.7 13.7 19.1 24.5 26.2 25.2 22.2 16.8 10.6 5.4 14.8 AVERAGE OF MINIMUM TEMPERATURE IN C. -2.3 -1.6 3.0 7.4 11.4 16.8 18.0 17.7 14.2 10.3 5.1 0.6 8.4 AVERAGE OF MAXIMUM TEMPERATURE IN C. 5.3 8.0 14.3 19.9 26.8 32.1 34.5 32.8 30.1 23.3 16.1 10.1 21.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 7.6 9.6 11.3 12.5 15.4 15.3 16.5 15.1 15.9 13.0 11.0 9.5 12.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.49 3.42 4.08 6.08 7.00 8.28 10.02 9.51 7.66 6.05 4.43 3.50 6.13 MEAN OF MIXING RATIO AT 09 GMT. 3.78 3.66 3.97 5.89 5.85 5.73 9.26 8.71 7.48 5.64 4.08 3.98 5.67 MEAN OF MIXING RATIO AT 15 GMT. 3.89 3.58 3.60 5.96 5.85 6.17 8.80 8.16 6.76 5.89 4.67 3.87 5.60 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -8.5 -7.0 -2.8 -1.9 3.6 13.5 13.0 12.4 10.2 4.4 -5.6 -8.0 -8.5 DAY 20 13 6 6 4 20 27 31 30 23 15 29 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 9.8 16.4 21.2 26.0 33.2 37.0 37.8 35.4 35.0 27.4 23.0 17.5 37.8 DAY 26 29 20 18 28 13 3 12 10 6 8 9 24 HOUR MAXIMUM PRECIPITATION IN MM. 13.3 8.5 8.4 9.0 2.0 1.0 8.0 4.0 0.4 2.0 4.0 19.0 19.0 DAY 18 17 1 30 2 2 19 25 4 15 13 17 MONTHLY TOTAL PRECIPITATION IN MM. 53.2 25.4 30.0 29.8 3.4 1.3 18.0 4.1 0.5 3.4 8.1 33.1 210.3 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 51.6 16.4 10.7 21.2 NO. OF DAYS WITH PRECIPITATION. 10 8 8 11 3 2 5 2 2 2 7 7 67 NO. OF DAYS PRECIPITATION EQUAL 9 7 5 9 2 1 3 1 0 2 3 4 46 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 0 0 0 0 0 0 0 0 0 0 1 2 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 85 82 68 74 66 55 64 64 65 65 61 68 68 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 67 59 41 41 27 19 29 30 30 33 34 53 39 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 77 60 39 44 28 22 26 27 28 40 45 57 41 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 11 7 0 0 0 0 0 0 0 0 1 4 23 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 6 4 0 0 0 0 11 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 1 0 0 0 0 0 0 0 0 0 0 1 2 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 6 27 29 29 15 0 0 0 106 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. 22 22 8 3 0 0 0 0 0 0 7 13 75 DATE OF START AND END FREEZING START = 15 NOV. END = 6 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. -3.3 -4.5 8.4 16.2 19.1 24.7 27.7 27.4 22.4 18.0 10.9 5.8 14.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -7.8 -9.2 3.2 9.6 11.7 16.1 19.4 20.1 15.0 11.5 5.7 1.4 8.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 1.3 0.3 13.6 22.7 26.4 33.5 36.0 34.6 29.9 24.4 16.2 10.1 20.7 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.1 9.5 10.4 13.1 14.7 17.4 16.6 14.5 14.9 12.9 10.5 8.7 12.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.35 2.14 4.63 4.97 6.95 8.58 10.36 9.01 7.03 5.39 4.87 4.26 5.88 MEAN OF MIXING RATIO AT 09 GMT. 2.64 2.58 5.04 5.84 6.17 6.85 8.67 7.54 7.59 5.18 4.82 4.67 5.63 MEAN OF MIXING RATIO AT 15 GMT. 2.66 2.63 4.97 4.61 5.75 6.63 8.04 7.52 6.99 5.19 4.79 4.75 5.38 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -17.0 -15.6 -2.6 3.0 4.5 11.6 17.0 14.0 7.0 4.0 -2.0 -2.4 -17.0 DAY 16 1 31 2 1 1 2 19 23 23 22 6 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 7.2 9.5 19.4 27.6 33.0 38.0 39.9 37.4 35.4 30.5 21.0 15.4 39.9 DAY 2 28 25 15 25 30 1 4 3 8 29 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 9.0 15.0 20.0 1.1 8.4 2.6 0.0 0.0 0.0 2.2 3.0 14.2 20.0 DAY 12 14 10 13 7 7 ** ** ** 21 16 15 MONTHLY TOTAL PRECIPITATION IN MM. 30.3 34.9 71.3 1.1 9.9 2.6 0.0 0.0 0.0 3.2 5.1 42.6 201.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 67.9 6.8 0.0 25.3 NO. OF DAYS WITH PRECIPITATION. 8 7 12 1 3 1 0 0 0 2 2 10 46 NO. OF DAYS PRECIPITATION EQUAL 7 4 10 1 2 1 0 0 0 2 2 8 37 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 2 0 0 0 0 0 0 0 0 1 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 83 84 77 55 63 61 62 53 58 56 70 81 67 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 64 65 57 33 30 23 25 22 29 28 41 60 40 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 71 70 58 28 28 20 21 22 27 32 46 68 41 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 25 26 0 0 0 0 0 0 0 0 0 0 51 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 7 12 4 0 0 0 23 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 12 15 0 0 0 0 0 0 0 0 0 0 27 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 8 27 31 31 17 4 0 0 118 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 4 0 0 0 0 0 0 0 1 11 75 DATE OF START AND END FREEZING START = 22 NOV. END = 31 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. -0.4 1.7 7.8 13.6 19.6 25.3 27.2 26.3 24.3 16.4 12.3 4.1 14.8 AVERAGE OF MINIMUM TEMPERATURE IN C. -4.1 -2.5 1.7 7.1 11.4 16.9 19.5 17.9 16.0 10.0 6.6 -0.8 8.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 3.2 6.0 13.9 20.1 27.8 33.6 34.8 34.6 32.7 22.8 17.9 9.0 21.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 7.3 8.5 12.2 13.0 16.4 16.7 15.3 16.7 16.7 12.8 11.3 9.8 13.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.99 3.19 3.82 5.00 6.08 7.63 9.37 9.46 7.16 5.97 4.42 3.36 5.70 MEAN OF MIXING RATIO AT 09 GMT. 3.38 3.67 3.77 4.69 5.41 6.02 7.84 8.06 5.57 5.42 4.27 3.46 5.13 MEAN OF MIXING RATIO AT 15 GMT. 3.45 3.54 3.63 4.28 5.40 5.29 7.38 7.30 5.17 5.73 4.43 3.42 4.92 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -13.1 -8.0 -6.0 -2.0 7.0 12.0 13.0 14.0 12.0 4.0 -2.6 -14.6 -14.6 DAY 12 8 17 3 9 7 6 2 30 15 14 28 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 9.0 13.4 19.4 29.0 33.0 37.0 38.0 38.2 36.0 28.5 24.2 19.0 38.2 DAY 5 19 12 27 25 27 16 5 13 4 5 3 24 HOUR MAXIMUM PRECIPITATION IN MM. 5.0 18.0 11.0 6.0 6.0 0.0 0.4 0.0 0.0 12.0 4.2 14.2 18.0 DAY 10 10 14 2 12 ** 5 ** ** 28 12 25 MONTHLY TOTAL PRECIPITATION IN MM. 25.8 40.4 20.3 13.2 7.8 0.0 0.4 0.0 0.0 23.0 6.2 17.6 154.7 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 55.9 13.6 0.3 30.3 NO. OF DAYS WITH PRECIPITATION. 12 12 7 6 2 0 1 0 0 6 2 4 52 NO. OF DAYS PRECIPITATION EQUAL 9 6 3 5 2 0 0 0 0 5 2 3 35 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 1 0 0 0 0 0 0 1 0 1 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 82 83 72 65 59 54 57 65 54 65 60 72 66 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 69 66 40 33 25 20 25 27 19 32 32 49 36 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 73 64 42 32 26 16 21 21 18 40 39 54 37 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 17 11 4 0 0 0 0 0 0 0 0 9 41 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 3 11 6 1 0 0 0 21 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 4 3 1 0 0 0 0 0 0 0 0 4 12 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 8 30 30 31 29 0 0 0 128 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 24 9 1 0 0 0 0 0 0 1 14 75 DATE OF START AND END FREEZING START = 14 NOV. END = 3 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. 2.0 1.9 7.1 15.1 17.8 23.3 27.1 26.4 22.3 16.8 10.4 2.4 14.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.8 -2.3 2.5 8.9 11.1 15.2 19.2 18.5 14.5 10.7 5.0 -1.6 8.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 5.8 6.2 11.8 21.3 24.5 31.4 34.9 34.3 30.0 23.0 15.9 6.4 20.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 7.6 8.5 9.3 12.4 13.4 16.2 15.7 15.8 15.5 12.3 10.9 8.0 12.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.45 3.17 4.64 6.17 6.51 8.57 8.86 8.86 7.60 6.65 4.77 3.78 6.09 MEAN OF MIXING RATIO AT 09 GMT. 3.86 3.50 5.37 6.25 5.70 6.76 7.37 7.07 6.16 6.12 4.81 3.92 5.57 MEAN OF MIXING RATIO AT 15 GMT. 3.85 3.44 4.98 5.66 5.54 6.04 6.96 6.96 5.92 5.93 4.72 4.02 5.33 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.6 -11.0 -10.0 1.0 5.0 9.0 12.8 14.2 8.8 7.6 0.0 -9.0 -11.0 DAY 28 13 11 14 7 13 16 27 28 24 24 28 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 10.0 12.4 20.4 27.5 30.4 37.0 38.0 38.5 36.0 26.0 22.5 13.0 38.5 DAY 31 19 30 22 29 29 7 6 3 6 1 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 5.0 12.0 41.0 19.2 12.0 0.1 0.0 0.0 0.0 7.0 0.4 15.0 41.0 DAY 14 21 25 4 24 19 ** ** ** 23 11 13 MONTHLY TOTAL PRECIPITATION IN MM. 17.6 35.3 99.1 38.1 17.3 0.1 0.0 0.0 0.0 7.6 0.4 49.8 265.3 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 57.3 20.9 0.0 21.8 NO. OF DAYS WITH PRECIPITATION. 12 11 13 4 4 1 0 0 0 2 1 12 60 NO. OF DAYS PRECIPITATION EQUAL 5 8 10 3 3 0 0 0 0 1 0 6 36 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 4 2 1 0 0 0 0 0 0 2 10 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 83 77 81 71 64 61 51 56 62 67 72 86 69 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 67 60 66 41 31 25 23 22 25 35 43 65 42 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 71 60 62 39 31 21 20 21 24 38 48 75 43 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 7 11 3 0 0 0 0 0 0 0 0 12 33 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 10 7 2 0 0 0 19 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 2 1 0 0 0 0 0 0 0 0 1 4 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 1 22 31 31 16 0 0 0 101 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 18 7 0 0 0 0 0 0 0 2 21 74 DATE OF START AND END FREEZING START = 24 NOV. END = 21 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. -2.3 2.2 4.3 12.5 14.9 22.5 27.5 24.3 20.8 16.4 11.0 3.9 13.2 AVERAGE OF MINIMUM TEMPERATURE IN C. -6.1 -2.0 -0.3 6.2 9.3 14.7 19.3 16.5 13.2 9.7 5.5 0.4 7.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 1.4 6.3 8.9 18.8 20.6 30.3 35.6 32.0 28.5 23.1 16.5 7.5 19.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 7.5 8.3 9.2 12.6 11.3 15.6 16.3 15.5 15.3 13.4 11.0 7.1 11.9 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.62 3.09 3.78 5.64 7.55 9.56 9.79 8.64 7.24 4.73 4.40 3.77 5.90 MEAN OF MIXING RATIO AT 09 GMT. 2.84 3.26 3.85 5.49 7.59 8.34 8.31 7.64 5.13 4.70 4.44 3.78 5.45 MEAN OF MIXING RATIO AT 15 GMT. 2.90 3.57 4.22 5.34 7.43 7.76 8.54 7.41 4.92 5.42 4.91 4.08 5.54 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -13.8 -9.0 -8.0 -0.7 -0.4 11.0 12.6 12.0 7.0 4.5 -6.0 -8.0 -13.8 DAY 11 12 1 3 5 5 12 30 29 8 27 29 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 6.0 13.0 18.8 25.0 30.0 35.7 39.0 36.2 32.5 27.5 20.4 13.0 39.0 DAY 2 22 29 13 30 30 3 25 25 13 1 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 7.6 10.0 21.0 18.0 19.4 3.0 0.8 0.3 0.0 0.0 7.0 10.0 21.0 DAY 8 25 15 27 2 8 10 29 ** ** 8 15 MONTHLY TOTAL PRECIPITATION IN MM. 30.0 33.3 75.1 42.1 64.1 13.7 0.8 0.3 0.0 0.0 7.9 26.2 293.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 47.2 40.9 0.4 11.6 NO. OF DAYS WITH PRECIPITATION. 9 8 12 12 12 10 1 1 0 0 3 9 77 NO. OF DAYS PRECIPITATION EQUAL 6 7 11 9 10 6 0 0 0 0 1 7 57 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 2 1 2 0 0 0 0 0 0 1 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 82 75 80 75 79 69 58 61 63 51 63 76 69 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 65 54 54 45 53 32 25 29 22 26 38 54 41 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 72 63 62 46 53 31 25 25 22 37 48 67 46 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 20 9 9 0 0 0 0 0 0 0 2 2 42 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 11 4 0 0 0 0 15 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 13 2 0 0 0 0 0 0 0 0 0 2 17 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 1 16 30 25 8 0 0 0 80 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 24 17 1 2 0 0 0 0 0 3 15 90 DATE OF START AND END FREEZING START = 26 NOV. END = 5 MAY IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. -0.8 3.2 7.0 14.1 18.1 23.8 26.1 26.0 23.3 14.9 6.0 5.0 13.9 AVERAGE OF MINIMUM TEMPERATURE IN C. -4.5 -1.3 2.1 8.0 11.8 16.0 18.3 18.5 15.8 8.7 1.9 0.9 8.0 AVERAGE OF MAXIMUM TEMPERATURE IN C. 3.0 7.8 11.9 20.3 24.5 31.5 33.9 33.5 30.9 21.2 10.1 9.2 19.8 DIFFERENCE BETWEEN AVERAGE MAXIMUM 7.5 9.1 9.8 12.3 12.7 15.5 15.6 15.0 15.1 12.5 8.2 8.3 11.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.54 3.39 3.91 5.31 7.56 8.40 10.02 9.69 7.96 5.43 4.99 3.92 6.09 MEAN OF MIXING RATIO AT 09 GMT. 2.72 3.68 3.87 5.61 6.54 8.81 9.67 9.05 7.92 5.20 5.58 4.55 6.10 MEAN OF MIXING RATIO AT 15 GMT. 2.67 3.82 3.78 5.12 6.78 8.56 9.53 8.72 7.94 5.72 5.52 4.73 6.08 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -11.6 -8.0 -5.5 1.8 4.0 10.5 13.0 15.0 9.0 4.5 -6.0 -4.0 -11.6 DAY 22 16 23 9 9 22 13 5 28 8 30 6 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 12.5 14.2 21.8 28.0 29.5 37.0 37.0 39.8 35.0 29.0 17.6 14.6 39.8 DAY 29 28 31 19 19 28 3 14 5 1 9 22 24 HOUR MAXIMUM PRECIPITATION IN MM. 6.0 18.0 20.0 8.0 3.0 2.0 0.6 0.0 0.0 0.6 16.0 6.0 20.0 DAY 8 21 8 30 13 1 26 ** ** 7 29 16 MONTHLY TOTAL PRECIPITATION IN MM. 14.6 55.3 46.7 20.2 8.9 2.1 0.8 0.0 0.0 0.7 85.9 16.2 251.4 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 46.4 12.4 0.3 40.9 NO. OF DAYS WITH PRECIPITATION. 8 11 9 5 8 2 2 0 0 2 14 5 66 NO. OF DAYS PRECIPITATION EQUAL 7 7 6 5 4 1 0 0 0 0 11 5 46 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 3 2 0 0 0 0 0 0 0 3 0 8 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 73 73 70 65 67 56 61 59 59 65 88 79 68 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 56 58 47 39 34 31 31 29 28 34 73 62 44 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 61 61 48 37 40 29 29 28 29 43 79 73 46 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 17 7 1 0 0 0 0 0 0 0 2 1 28 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 5 10 1 0 0 0 18 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 7 0 0 0 0 0 0 0 0 0 0 0 7 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 21 31 30 20 0 0 0 102 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. 27 18 10 0 0 0 0 0 0 0 10 12 77 DATE OF START AND END FREEZING START = 12 NOV. END = 24 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. 4.1 3.4 9.5 15.6 18.6 22.9 26.1 26.2 20.7 15.8 10.3 2.7 14.7 AVERAGE OF MINIMUM TEMPERATURE IN C. 0.0 -1.3 3.9 9.5 11.7 14.5 16.9 17.3 13.8 10.2 5.7 -1.1 8.5 AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.2 8.1 15.0 21.7 25.5 31.2 35.3 35.1 27.6 21.4 14.9 6.4 20.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.2 9.4 11.1 12.2 13.8 16.7 18.4 17.8 13.8 11.2 9.2 7.5 12.4 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.96 3.32 4.29 6.27 7.33 7.62 9.31 9.83 6.94 6.96 5.63 3.43 6.24 MEAN OF MIXING RATIO AT 09 GMT. 4.44 3.61 4.40 6.82 7.01 7.41 8.85 8.06 6.75 7.03 6.09 3.55 6.17 MEAN OF MIXING RATIO AT 15 GMT. 4.39 3.48 4.47 6.49 7.03 7.44 8.68 7.82 7.22 7.15 6.09 3.66 6.16 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -3.8 -6.6 -1.2 0.5 5.6 8.5 12.4 15.2 10.0 5.0 0.0 -9.6 -9.6 DAY 26 19 1 5 7 5 1 7 7 24 10 7 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.6 14.4 22.0 29.0 31.4 34.6 39.0 38.6 31.8 24.8 22.0 12.4 39.0 DAY 3 27 31 22 30 16 19 1 2 14 3 3 24 HOUR MAXIMUM PRECIPITATION IN MM. 8.0 24.0 7.0 16.0 18.0 7.0 0.0 0.0 0.3 3.0 37.0 3.0 37.0 DAY 17 1 12 30 1 24 ** ** 29 30 26 1 MONTHLY TOTAL PRECIPITATION IN MM. 41.3 36.7 16.5 31.2 40.0 9.0 0.0 0.0 0.4 10.2 144.6 9.0 338.9 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 27.9 23.7 0.1 48.3 NO. OF DAYS WITH PRECIPITATION. 9 7 7 7 8 4 0 0 2 7 12 5 68 NO. OF DAYS PRECIPITATION EQUAL 8 5 5 4 5 2 0 0 0 4 9 3 45 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 0 1 1 0 0 0 0 0 6 0 9 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 81 76 69 69 64 57 64 67 59 75 79 80 70 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 66 56 44 43 35 28 28 25 30 44 57 56 43 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 69 56 46 43 38 27 24 22 32 51 64 65 45 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 7 0 0 0 0 0 0 0 0 0 9 16 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 2 2 0 0 0 0 5 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 1 0 0 0 0 0 0 0 0 0 2 3 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 4 22 31 31 6 0 0 0 94 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. 19 17 3 0 0 0 0 0 0 0 1 17 57 DATE OF START AND END FREEZING START = 10 NOV. END = 17 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. 5.1 6.1 9.8 14.6 18.6 23.1 27.7 28.5 22.8 15.6 11.5 2.6 15.5 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.1 1.2 3.7 8.9 12.4 15.6 18.8 20.3 15.9 9.0 5.3 -1.6 9.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.2 10.9 15.9 20.3 24.9 30.6 36.7 36.7 29.7 22.1 17.7 6.8 21.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.3 9.7 12.2 11.4 12.5 15.0 17.9 16.4 13.8 13.1 12.4 8.4 12.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.35 3.57 3.89 5.99 7.71 8.76 10.37 10.09 7.06 5.80 3.59 3.18 6.11 MEAN OF MIXING RATIO AT 09 GMT. 3.73 3.77 4.04 6.07 7.95 7.40 8.98 7.69 6.23 5.91 3.30 3.51 5.71 MEAN OF MIXING RATIO AT 15 GMT. 3.66 3.59 4.05 6.06 7.55 7.26 7.29 6.97 6.60 5.83 3.45 3.65 5.50 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.5 -4.2 0.0 1.2 3.6 12.0 15.0 15.0 7.5 3.0 -4.0 -6.0 -6.0 DAY 21 25 6 7 9 1 6 24 22 19 27 20 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.0 15.6 21.0 24.6 30.0 36.4 42.0 40.2 34.4 30.6 23.6 11.4 42.0 DAY 31 4 24 3 21 29 16 6 9 4 1 31 24 HOUR MAXIMUM PRECIPITATION IN MM. 3.0 3.6 14.0 57.0 7.0 1.0 0.0 0.0 2.0 7.0 0.0 6.0 57.0 DAY 17 5 17 24 2 6 ** ** 21 25 ** 12 MONTHLY TOTAL PRECIPITATION IN MM. 3.7 15.3 31.3 74.7 30.4 2.2 0.0 0.0 2.5 7.1 0.0 14.3 181.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 27.7 59.1 1.4 11.8 NO. OF DAYS WITH PRECIPITATION. 2 9 9 8 13 3 0 0 2 2 0 6 54 NO. OF DAYS PRECIPITATION EQUAL 1 5 5 6 7 1 0 0 1 1 0 4 31 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 2 1 0 0 0 0 0 0 0 0 3 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 71 70 62 69 65 63 63 58 55 68 50 78 64 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 48 48 37 42 42 28 27 22 25 37 26 59 37 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 50 47 38 45 43 28 18 18 27 41 32 66 38 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 3 1 0 0 0 0 0 0 0 0 1 4 9 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 6 10 2 0 0 0 18 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 1 1 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 1 22 31 31 18 1 0 0 104 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 1 1 0 0 0 0 2 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. 16 11 1 0 0 0 0 0 0 0 7 28 63 DATE OF START AND END FREEZING START = 12 NOV. END = 6 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. 0.0 4.3 5.6 12.6 19.7 23.9 26.5 26.5 23.7 16.3 9.3 6.8 14.6 AVERAGE OF MINIMUM TEMPERATURE IN C. -3.4 0.2 1.4 7.2 13.1 16.1 19.2 19.1 16.2 10.2 4.1 2.2 8.8 AVERAGE OF MAXIMUM TEMPERATURE IN C. 3.5 8.5 9.9 17.9 26.2 31.6 33.8 33.9 31.3 22.3 14.5 11.5 20.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 6.9 8.3 8.5 10.7 13.1 15.5 14.6 14.8 15.1 12.1 10.4 9.3 11.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.23 4.12 4.31 6.00 8.47 8.58 10.42 8.94 7.59 5.98 4.18 3.60 6.28 MEAN OF MIXING RATIO AT 09 GMT. 3.70 4.59 4.59 5.61 8.18 8.01 9.29 8.87 7.12 5.85 4.10 3.80 6.14 MEAN OF MIXING RATIO AT 15 GMT. 3.67 4.56 4.76 5.60 7.72 7.89 9.34 10.30 6.72 6.01 4.03 3.96 6.21 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -11.0 -5.5 -5.4 -0.8 8.2 10.0 10.6 15.4 10.4 4.8 -2.0 -3.5 -11.0 DAY 22 3 1 4 2 12 15 15 21 31 12 12 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 12.4 15.8 21.4 24.4 32.0 35.6 36.0 37.0 35.4 27.0 20.0 17.4 37.0 DAY 1 25 31 21 31 4 3 23 16 24 2 27 24 HOUR MAXIMUM PRECIPITATION IN MM. 7.0 11.0 44.0 17.0 14.0 4.0 0.5 0.0 0.0 2.0 0.4 12.0 44.0 DAY 7 5 2 3 22 27 10 ** ** 16 8 22 MONTHLY TOTAL PRECIPITATION IN MM. 30.4 52.4 119.1 56.4 35.1 4.7 0.7 0.0 0.0 3.1 0.4 12.6 314.9 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 64.1 30.5 0.2 5.1 NO. OF DAYS WITH PRECIPITATION. 12 13 16 12 13 4 2 0 0 3 1 3 79 NO. OF DAYS PRECIPITATION EQUAL 10 10 9 9 6 1 0 0 0 1 0 1 47 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 2 3 2 1 0 0 0 0 0 0 1 9 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 85 85 83 75 71 63 61 54 57 63 68 65 69 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 74 70 65 46 40 30 29 29 27 35 38 42 44 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 77 71 67 48 39 27 28 30 25 40 44 51 46 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 15 3 2 0 0 0 0 0 0 0 0 0 20 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 4 9 9 0 0 0 0 22 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 8 1 0 0 0 0 0 0 0 0 0 0 9 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 4 22 31 29 23 0 0 0 109 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 13 11 2 0 0 0 0 0 0 3 9 61 DATE OF START AND END FREEZING START = 12 NOV. END = 5 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. 4.4 3.3 6.2 13.9 19.4 25.2 27.9 28.4 22.0 18.3 9.2 4.6 15.2 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.3 -2.6 1.1 8.1 12.7 18.0 19.5 20.9 14.8 12.1 4.9 0.8 9.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 9.1 9.3 11.3 19.8 26.1 32.4 36.3 36.0 29.2 24.6 13.4 8.4 21.3 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.4 11.9 10.2 11.7 13.4 14.4 16.8 15.1 14.4 12.5 8.5 7.6 12.2 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.17 2.70 3.71 4.85 6.83 9.05 10.94 8.62 6.75 5.76 5.08 4.09 5.96 MEAN OF MIXING RATIO AT 09 GMT. 3.35 2.60 3.60 4.74 6.48 8.01 9.34 7.11 6.09 5.74 5.33 4.66 5.59 MEAN OF MIXING RATIO AT 15 GMT. 3.37 2.34 3.36 4.82 6.36 7.10 7.69 6.47 5.86 6.03 5.44 4.68 5.29 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -11.4 -9.6 -7.0 -3.5 5.0 11.8 15.4 15.2 8.2 7.0 1.4 -4.6 -11.4 DAY 29 7 9 12 6 4 6 21 15 30 28 27 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.2 17.0 17.6 28.8 33.4 36.2 39.6 39.4 36.0 29.4 17.2 13.6 39.6 DAY 7 18 24 27 28 27 15 14 1 2 21 7 24 HOUR MAXIMUM PRECIPITATION IN MM. 6.0 1.0 12.0 9.0 3.0 4.0 0.2 0.0 0.0 1.0 6.0 13.0 13.0 DAY 16 19 30 5 20 16 6 ** ** 13 2 10 MONTHLY TOTAL PRECIPITATION IN MM. 9.1 2.2 36.6 16.0 6.0 7.2 0.2 0.0 0.0 1.8 21.8 41.8 142.7 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 33.6 20.5 0.1 45.8 NO. OF DAYS WITH PRECIPITATION. 4 3 10 9 5 5 1 0 0 2 10 9 58 NO. OF DAYS PRECIPITATION EQUAL 3 2 8 3 2 2 0 0 0 1 8 6 35 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 1 0 0 0 0 0 0 0 0 2 3 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 67 67 72 57 59 55 66 50 57 54 77 81 64 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 46 36 44 35 31 27 28 20 25 30 55 67 37 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 50 33 44 36 31 23 20 17 24 35 61 72 37 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 4 11 3 0 0 0 0 0 0 0 0 1 19 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 1 7 7 15 1 0 0 0 31 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 6 25 31 31 14 0 0 0 107 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. 15 22 11 2 0 0 0 0 0 0 0 15 65 DATE OF START AND END FREEZING START = 11 DEC. END = 13 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. MEAN AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. -0.4 2.5 8.2 15.4 18.9 26.6 27.0 27.1 22.9 17.1 12.9 8.3 15.5 AVERAGE OF MINIMUM TEMPERATURE IN C. -3.8 -1.8 2.9 9.1 12.3 19.6 19.2 19.9 15.8 10.4 7.0 3.6 9.5 AVERAGE OF MAXIMUM TEMPERATURE IN C. 3.0 6.9 13.6 21.6 25.5 33.7 34.9 34.3 30.0 23.7 18.7 13.0 21.6 DIFFERENCE BETWEEN AVERAGE MAXIMUM 6.8 8.7 10.7 12.5 13.2 14.1 15.7 14.4 14.2 13.3 11.7 9.4 12.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.27 3.21 4.36 6.20 8.16 8.34 10.08 10.29 8.24 5.79 4.79 4.48 6.43 MEAN OF MIXING RATIO AT 09 GMT. 3.53 3.39 4.37 6.40 7.54 6.57 8.73 9.42 7.80 5.73 5.00 4.66 6.10 MEAN OF MIXING RATIO AT 15 GMT. 3.49 3.52 4.31 6.07 7.52 6.81 8.55 9.00 7.24 5.86 5.32 4.98 6.06 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -14.0 -9.6 -5.4 0.2 4.8 14.8 16.2 16.6 12.0 5.6 1.2 -1.0 -14.0 DAY 11 17 3 25 3 1 9 4 8 25 30 5 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 8.6 16.0 20.0 29.2 30.4 37.6 39.0 38.0 36.0 30.2 22.6 17.6 39.0 DAY 30 7 28 15 11 28 11 17 2 1 1 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 12.0 10.0 21.0 13.0 15.0 0.1 0.2 11.0 5.0 4.0 1.0 14.0 21.0 DAY 6 12 30 6 25 5 17 3 14 11 11 4 MONTHLY TOTAL PRECIPITATION IN MM. 45.7 27.3 57.0 56.5 26.4 0.1 0.2 14.0 5.4 5.0 3.4 24.1 265.1 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 49.0 31.3 7.4 12.3 NO. OF DAYS WITH PRECIPITATION. 9 9 10 10 9 1 1 3 2 2 5 4 65 NO. OF DAYS PRECIPITATION EQUAL 7 6 7 6 3 0 0 3 1 2 2 3 40 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 1 2 3 1 0 0 1 0 0 0 1 11 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 86 74 76 69 71 48 60 61 63 63 63 74 67 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 72 57 49 41 38 20 26 30 31 33 39 51 41 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 74 61 46 41 39 21 24 26 29 38 47 60 42 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 16 8 2 0 0 0 0 0 0 0 0 0 26 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 12 6 9 1 0 0 0 28 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 6 3 0 0 0 0 0 0 0 0 0 0 9 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 4 29 31 30 18 1 0 0 113 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 19 10 0 0 0 0 0 0 0 0 2 55 DATE OF START AND END FREEZING START = 5 DEC. END = 26 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. 3.4 7.8 8.8 14.8 20.6 25.1 25.4 28.3 22.2 17.9 8.0 5.4 15.6 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.9 2.5 3.4 8.2 13.2 16.9 18.0 21.6 14.5 11.6 3.5 0.9 9.4 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.7 13.1 14.2 21.4 28.1 33.3 32.9 35.1 29.9 24.2 12.6 9.8 21.8 DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.6 10.6 10.8 13.2 14.9 16.4 14.9 13.5 15.4 12.6 9.1 8.9 12.4 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.62 3.42 3.90 5.35 6.49 7.54 9.58 9.48 8.36 5.65 4.74 4.16 6.02 MEAN OF MIXING RATIO AT 09 GMT. 3.62 3.46 4.02 4.86 4.96 6.41 9.38 7.48 7.58 5.69 5.13 4.57 5.60 MEAN OF MIXING RATIO AT 15 GMT. 3.76 3.45 3.94 4.62 5.07 5.47 8.73 7.71 7.16 5.59 4.90 4.69 5.42 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -6.6 -4.6 -4.4 1.0 4.0 12.0 12.6 15.2 8.6 5.0 -4.0 -6.0 -6.6 DAY 4 22 19 10 21 17 13 31 28 28 29 4 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 11.4 17.8 20.4 27.6 34.6 36.4 37.4 37.8 34.4 29.8 19.0 16.0 37.8 DAY 15 27 31 30 31 28 4 1 3 11 19 31 24 HOUR MAXIMUM PRECIPITATION IN MM. 14.0 5.0 9.0 1.0 0.8 0.0 9.0 0.0 2.0 10.0 10.0 10.0 14.0 DAY 10 8 17 23 14 ** 15 ** 27 27 8 10 MONTHLY TOTAL PRECIPITATION IN MM. 37.3 7.3 26.2 3.2 1.3 0.0 18.0 0.0 2.0 17.3 43.7 25.6 181.9 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 38.9 2.5 11.0 47.6 NO. OF DAYS WITH PRECIPITATION. 9 4 7 5 3 0 3 0 1 4 6 7 49 NO. OF DAYS PRECIPITATION EQUAL 5 2 6 1 0 0 3 0 1 3 5 6 32 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 0 0 0 0 0 0 0 0 1 2 1 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 79 60 68 63 56 50 62 48 69 57 79 81 64 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 56 38 43 31 21 21 33 21 31 32 56 60 37 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 60 40 41 30 22 16 29 22 29 35 59 69 38 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 5 1 1 0 0 0 0 0 0 0 1 2 10 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 1 4 5 21 0 0 0 0 31 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 10 28 25 31 18 0 0 0 112 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 7 5 0 0 0 0 0 0 0 7 8 45 DATE OF START AND END FREEZING START = 2 NOV. END = 19 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 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. 2.7 4.0 8.4 17.5 21.3 24.5 28.0 27.8 23.7 15.1 7.8 4.6 15.5 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.6 -0.9 2.7 11.1 13.5 16.1 20.7 20.5 16.4 9.9 3.3 1.3 9.4 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.0 8.8 14.1 23.9 29.2 33.0 35.3 35.0 31.0 20.3 12.3 7.9 21.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.6 9.7 11.4 12.8 15.7 16.9 14.6 14.5 14.6 10.4 9.0 6.6 12.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.17 3.09 3.39 5.61 6.48 7.73 8.34 8.70 8.83 6.26 4.76 4.27 5.89 MEAN OF MIXING RATIO AT 09 GMT. 3.33 3.22 3.37 5.17 5.24 5.73 6.79 6.96 7.25 6.46 5.19 4.77 5.29 MEAN OF MIXING RATIO AT 15 GMT. 3.39 3.23 3.23 4.89 4.92 5.40 6.66 6.74 6.45 6.38 4.90 4.89 5.09 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -8.0 -6.6 -5.0 4.4 7.0 8.2 16.4 15.6 13.6 6.4 -0.6 -2.0 -8.0 DAY 18 9 4 2 10 13 4 8 12 16 29 29 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.8 16.6 19.4 29.4 33.6 38.2 38.0 39.2 36.0 26.4 20.0 12.0 39.2 DAY 1 24 30 20 26 30 1 3 8 11 3 22 24 HOUR MAXIMUM PRECIPITATION IN MM. 19.0 16.0 5.9 1.0 0.3 0.2 0.0 0.0 0.6 25.0 7.0 30.0 30.0 DAY 28 14 23 21 7 13 ** ** 30 17 6 11 MONTHLY TOTAL PRECIPITATION IN MM. 34.1 31.0 15.9 3.4 0.3 0.2 0.0 0.0 1.0 52.1 24.0 78.0 240.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 33.8 1.6 0.4 64.2 NO. OF DAYS WITH PRECIPITATION. 9 4 5 5 1 1 0 0 2 10 7 12 56 NO. OF DAYS PRECIPITATION EQUAL 5 4 4 2 0 0 0 0 0 7 7 9 38 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 2 0 0 0 0 0 0 0 2 0 3 8 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 74 71 58 53 54 55 46 50 65 70 79 82 63 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 53 49 34 27 21 20 20 21 27 46 56 69 37 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 59 50 32 27 19 18 18 19 25 50 59 77 38 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 9 7 2 0 0 0 0 0 0 0 0 0 18 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 3 12 15 4 0 0 0 34 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 13 24 31 31 22 0 0 0 121 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. 20 20 10 0 0 0 0 0 0 0 3 11 64 DATE OF START AND END FREEZING START = 11 NOV. END = 27 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. MEAN AND EXTREMES FOR THE PERIOD 1961 TO 2000 PAGE 1 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPE. IN C. 0.8 3.1 7.8 13.8 18.7 23.7 26.6 25.8 21.9 16.0 9.4 3.8 14.3 SD OF MEAN DAILY TEMPERATURE IN C. 3.33 2.84 1.78 1.39 1.59 1.32 0.92 1.47 1.13 1.49 1.75 2.26 1.77 AVERAGE OF MINIMUM TEMPERATURE IN C. -4.0 -1.9 2.1 7.3 11.4 15.3 18.1 17.6 13.6 8.9 3.4 -1.2 7.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 5.4 8.1 13.5 20.3 26.0 32.1 35.1 34.1 30.2 23.0 15.4 8.5 21.0 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.4 10.1 11.3 12.9 14.5 16.8 17.1 16.5 16.5 14.0 12.0 9.4 13.4 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.11 3.34 4.22 5.68 7.44 8.59 9.73 9.57 7.77 6.16 4.57 3.58 6.14 MEAN OF MIXING RATIO AT 09 GMT. 3.69 3.86 4.42 5.85 7.24 8.19 9.19 9.20 7.37 6.20 4.88 4.09 6.18 MEAN OF MIXING RATIO AT 15 GMT. 3.53 3.76 4.41 5.70 7.18 7.86 9.25 9.01 7.53 6.48 4.99 4.01 6.14 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -17.5 -15.6 -10.5 -8.0 -1.0 6.4 10.0 7.5 2.5 -0.5 -9.5 -16.5 -17.5 YEAR - DAY 72-24 89- 1 85- 9 67- 1 79- 1 62-11 67-21 70-30 70-13 87-27 73- 8 72-25 72-24 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 18.2 21.0 28.0 30.5 35.0 41.5 42.5 41.5 38.5 33.5 26.5 19.0 42.5 YEAR - DAY 87-31 73-28 71-20 73-28 73-27 73-27 73-29 73- 2 72- 6 72- 3 73- 2 73- 5 73-29 24 HOUR MAXIMUM PRECIPITATION IN MM. 26.0 28.0 44.0 57.0 22.8 7.4 9.4 11.0 8.2 25.0 37.0 46.0 57.0 YEAR - DAY 75- 3 73-21 96- 2 95-24 67-18 79- 1 70-26 98- 3 66-30 0-17 94-26 72- 1 95-24 MONTHLY TOTAL PRECIPITATION IN MM. 29.7 32.9 42.2 33.7 20.5 3.6 2.2 1.0 0.9 10.7 21.8 33.2 232.4 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 45.1 24.9 1.8 28.2 NO. OF DAYS WITH PRECIPITATION. 7 7 8 8 6 2 1 1 1 4 5 7 57 NO. OF DAYS PRECIPITATION EQUAL 6 5 6 6 4 1 0 0 0 2 4 5 39 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 1 1 1 1 0 0 0 0 0 1 1 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 80 76 72 66 63 58 57 58 59 64 69 76 67 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 64 59 48 40 35 28 27 28 28 36 44 58 41 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 71 63 52 44 41 30 30 31 34 47 55 67 47 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 15 9 3 0 0 0 0 0 0 0 1 8 36 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 6 5 1 0 0 0 14 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 5 2 0 0 0 0 0 0 0 0 0 1 8 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 5 24 30 30 17 1 0 0 107 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. 25 18 10 1 0 0 0 0 0 0 6 19 79 DATE OF START AND END FREEZING START = 27 OCT. END = 5 MAY IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION KARAJ LATITUDE 35 48 N DATA PROCESSING CENTER LONGITUDE 51 2 E ELEVATION 1321 MET. MEAN AND EXTREMES FOR THE PERIOD 1961 TO 2000 PAGE 2 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE DRY BULB TEMPERATURE. IN C. 1.0 3.4 8.3 14.7 20.0 25.3 28.1 27.2 23.0 16.4 9.8 3.9 15.1 AVERAGE DEW POINT TEMPERATURE. IN C. -4.0 -3.3 -1.1 2.8 6.3 7.9 10.0 9.7 6.6 4.3 0.2 -2.4 3.1 AVERAGE OF MIXING RATIO IN G/KG 3.44 3.65 4.34 5.73 7.28 8.22 9.39 9.25 7.53 6.28 4.81 3.89 6.15 AVERAGE OF VAPOUR PRESSURE HPA 4.74 5.03 5.99 7.92 10.05 11.35 12.96 12.77 10.41 8.67 6.64 5.36 8.49 AVERAGE OF SATURATION DEFICIT IN HPA 2.32 3.28 5.62 9.69 14.53 22.76 27.05 25.03 19.29 11.04 6.14 3.13 12.49 AVERAGE RELATIVE HUMIDITY IN PERCENT 72 66 57 50 46 39 38 39 41 49 56 67 52 AVERAGE OF MAXIMUM RELATIVE HUMIDITY(%) 84 80 75 68 65 59 58 59 61 67 72 80 69 AVERAGE OF MINIMUM RELATIVE HUMIDITY(%) 61 54 44 36 33 25 24 25 26 35 42 55 38 NO. OF DAYS PRECIPITATION EQUAL 2 2 3 2 1 0 0 0 0 1 2 2 15 OR MORE THAN 5 MM.