SEASONAL NAO INDEX BASED ON STANDARDIZED ANOMALIES DJF MAM JJA SON 1874-9999.0 0.5 0.7 1.3 1875 -1.4 -1.2 0.0 -3.4 1876 -0.4 0.0 2.6 -8.0 1877 -0.1 -3.5 -3.4 -0.7 1878 0.9 -2.4 -3.0 -3.4 1879 -2.8 0.9 -2.5 -2.5 1880 -1.1 -0.5 -3.0 -5.0 1881 -4.9 -3.5 0.5 -2.0 1882 1.5 0.7 0.6 1.6 1883 0.6 -1.3 -3.0 2.0 1884 0.7 -1.0 -1.9 0.1 1885 -0.8 -0.1 -2.5 -0.7 1886 -0.7 -2.7 1.7 0.6 1887 1.0 -3.6 -3.6 -3.9 1888 -3.0 -2.5 -3.0 -2.8 1889 1.2 0.5 0.1 1.2 1890 1.8 1.5 2.1 2.4 1891 -0.4 -2.6 -4.3 0.6 1892 -0.3 -3.1 -1.8 -1.2 1893 -1.6 -1.7 -4.4 -1.9 1894 2.8 1.0 1.3 -3.7 1895 -3.3 -0.3 -1.9 -3.7 1896 -0.4 3.2 -0.2 -2.6 1897 0.6 2.0 -2.3 -2.1 1898 1.6 -0.1 -2.3 -1.5 1899 -1.4 -2.9 -0.4 -1.3 1900 -1.1 -1.3 -2.0 2.0 1901 -1.0 -1.2 1.5 -0.6 1902 -1.5 -0.8 -5.8 -2.0 1903 1.2 2.6 -3.0 -0.8 1904 1.7 2.2 -3.1 -0.5 1905 0.7 0.5 -1.1 -0.6 1906 1.9 -0.7 -1.9 0.8 1907 2.0 1.5 -2.1 0.8 1908 2.0 1.0 -0.6 -1.9 1909 1.3 -2.9 2.0 -1.5 1910 1.9 1.5 -1.6 -3.2 1911 0.7 0.7 -2.3 -0.7 1912 -1.6 1.6 -1.8 0.2 1913 1.0 3.7 0.8 0.2 1914 0.9 2.8 1.3 -0.7 1915 1.3 -2.1 -3.6 -2.8 1916 1.2 -2.0 -2.6 0.5 1917 -2.8 -2.9 -0.7 3.9 1918 -1.2 0.2 -0.8 1.4 1919 -0.7 -0.6 2.2 -2.8 1920 3.1 2.8 0.7 1.1 1921 0.4 3.2 -0.6 -2.1 1922 2.9 0.9 3.4 -2.2 1923 2.1 -0.5 1.4 1.8 1924 0.6 -4.4 1.4 1.2 1925 3.0 0.7 2.1 -2.9 1926 -1.1 -0.5 -1.4 -1.1 1927 0.9 0.6 -1.0 -2.4 1928 1.1 -2.2 -3.4 1.9 1929 -2.0 -2.1 -1.0 3.1 1930 1.8 -0.1 0.5 -0.6 1931 2.1 -3.1 -2.0 -0.5 1932 -1.2 -1.4 0.3 1.6 1933 0.0 -0.8 3.2 -1.7 1934 1.1 1.5 -0.4 0.9 1935 0.9 -2.2 3.0 3.6 1936 -3.4 -1.4 1.6 2.0 1937 1.1 -0.9 -0.8 -2.9 1938 0.4 0.9 2.4 4.7 1939 0.6 0.0 -0.3 -1.6 1940 -3.1 -1.8 1.5 0.8 1941 -2.0 -1.8 0.6 -2.4 1942 -0.3 -2.6 0.2 0.1 1943 1.2 2.2 -0.6 2.9 1944 1.0 -1.9 -1.5 2.0 1945 0.9 -1.2 0.8 -4.5 1946 -0.1 0.4 3.7 -2.3 1947 -1.7 -1.0 -0.9 -0.6 1948 -0.7 1.9 -1.3 -0.9 1949 1.5 0.9 -2.9 0.4 1950 0.9 -0.3 -0.6 1.2 1951 0.9 -3.7 -1.6 0.2 1952 1.6 -1.9 -0.5 -2.9 1953 -0.4 -1.8 2.6 2.3 1954 1.4 -0.2 2.3 2.8 1955 -1.3 -1.9 0.7 -2.1 1956 -1.6 1.5 -0.5 1.2 1957 1.3 -1.2 -2.8 -1.2 1958 -0.7 -1.8 -3.0 1.3 1959 -1.0 0.9 1.1 1.0 1960 -1.9 -0.4 -0.9 -1.7 1961 1.8 -1.1 3.5 1.9 1962 -0.2 -3.3 -0.7 -0.7 1963 -3.8 2.0 -1.8 1.2 1964 -2.7 0.1 -0.7 0.9 1965 -2.1 0.3 1.0 -1.8 1966 -3.1 0.4 -0.3 -2.0 1967 0.7 1.8 1.5 2.4 1968 -1.0 -0.2 -1.7 -4.5 1969 -3.9 -2.0 0.5 1.0 1970 -0.3 0.5 0.5 0.1 1971 -0.6 0.3 0.0 0.3 1972 0.8 2.6 2.4 -1.1 1973 2.3 -1.1 2.8 -1.4 1974 1.8 -0.3 0.7 1.6 1975 1.1 -0.4 -0.6 1.7 1976 1.0 3.0 -2.3 -0.2 1977 -2.5 -0.3 -0.3 -0.4 1978 -1.6 1.6 -1.1 2.0 1979 -3.3 0.2 1.0 1.3 1980 0.0 -1.1 -0.6 -2.4 1981 1.8 -1.9 0.5 -0.7 1982 -0.7 1.8 -0.7 2.6 1983 1.9 0.5 0.9 -2.8 1984 2.8 -1.4 0.5 1.0 1985 -1.8 0.0 -0.1 -2.8 1986 -1.0 3.6 -0.8 3.5 1987 -1.4 -0.5 -2.1 0.3 1988 -0.4 -2.0 1.5 -2.6 1989 3.3 2.7 0.6 -0.7 1990 1.8 2.8 1.2 -1.3 1991 1.2 0.9 0.4 0.7 1992 0.6 3.0 1.5 1.0 1993 1.7 -0.1 -0.4 -1.1 1994 1.5 3.7 1.5 -1.1 1995 2.7 -0.2 -3.0 -3.0 1996 -2.0 -4.0 1.7 2.6 1997 -0.6 -1.0 -1.0 -2.6 1998 -0.4 0.7 0.8 0.7 1999 2.7 -0.3 -2.7 1.5 2000 2.7 -0.4 -0.9 2.4 2001 -1.1 -0.7 -0.3 0.7 2002 -0.4 2.3 2.6 -3.1 2003 -0.1 -0.6 -1.7 0.4 2004 -1.6 2.0 -1.8 -0.4 2005 1.6 -2.9 0.0-9999.0