1850 NaN 1851 NaN 1852 NaN 1853 NaN 1854 NaN 1855 NaN 1856 NaN 1857 NaN 1858 NaN 1859 NaN 1860 NaN 1861 NaN 1862 NaN 1863 NaN 1864 NaN 1865 NaN 1866 NaN 1867 NaN 1868 NaN 1869 NaN 1870 NaN 1871 NaN 1872 NaN 1873 NaN 1874 NaN 1875 NaN 1876 NaN 1877 NaN 1878 NaN 1879 NaN 1880 NaN 1881 NaN 1882 NaN 1883 NaN 1884 NaN 1885 NaN 1886 NaN 1887 NaN 1888 NaN 1889 NaN 1890 NaN 1891 NaN 1892 NaN 1893 NaN 1894 NaN 1895 NaN 1896 NaN 1897 NaN 1898 NaN 1899 NaN 1900 -0.1803 1901 -0.2104 1902 -0.3283 1903 -0.4962 1904 -0.5842 1905 -0.4879 1906 -0.4222 1907 -0.4916 1908 -0.5149 1909 -0.4971 1910 -0.5219 1911 -0.4753 1912 -0.3805 1913 -0.4032 1914 -0.2121 1915 -0.0652 1916 -0.2810 1917 -0.2121 1918 -0.1435 1919 -0.1441 1920 -0.1520 1921 -0.1639 1922 -0.2613 1923 -0.2705 1924 -0.2586 1925 -0.2186 1926 -0.1393 1927 -0.1872 1928 -0.2148 1929 -0.2516 1930 -0.1420 1931 -0.1015 1932 -0.1701 1933 -0.1687 1934 -0.1376 1935 -0.1549 1936 -0.1100 1937 0.0204 1938 -0.0443 1939 -0.1003 1940 -0.0128 1941 0.1312 1942 0.1617 1943 0.1552 1944 0.2139 1945 0.3097 1946 -0.0408 1947 -0.0967 1948 -0.0826 1949 -0.0315 1950 -0.0852 1951 0.0040 1952 0.0450 1953 0.0159 1954 -0.1289 1955 -0.1487 1956 -0.1690 1957 0.0333 1958 0.1091 1959 0.0496 1960 -0.0037 1961 0.0069 1962 -0.0419 1963 0.0290 1964 -0.1397 1965 -0.1241 1966 -0.0488 1967 -0.0924 1968 -0.1099 1969 0.0192 1970 -0.0456 1971 -0.1713 1972 0.0477 1973 0.0217 1974 -0.1375 1975 -0.1639 1976 -0.1301 1977 0.0744 1978 0.0073 1979 0.1087 1980 0.1144 1981 0.0776 1982 0.0218 1983 0.1221 1984 0.0057 1985 -0.0366 1986 0.0115 1987 0.1699 1988 0.1093 1989 0.0851 1990 0.2096 1991 0.1713 1992 -0.0011 1993 0.0508 1994 0.1067 1995 0.1569 1996 0.1010 1997 0.2230 1998 0.3712 1999 0.1426 2000 0.1772 2001 0.2278 2002 0.2804 2003 0.3095 2004 0.2894 2005 NaN 2006 NaN 2007 NaN 2008 NaN 2009 NaN Marine air temperature anomalies relative to 1961-1990: Data before 1900 are not shown because they have not been corrected for known biases. Ishii et al. (2005, uninterpolated blue). Ishii, M., A. Shouji, S. Sugimoto, T. Matsumoto 2005: Objective analysis of SST and marine meteorological variables for the 20th Century using ICOADS and the Kobe Collection. Int. J. Climatol., 25, 865879. http://ghrsst.nodc.noaa.gov/intercomp.html Data from Masayoshi Ishii