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 -0.0772 1901 -0.1205 1902 -0.2294 1903 -0.3329 1904 -0.3954 1905 -0.3701 1906 -0.3221 1907 -0.3574 1908 -0.3979 1909 -0.4200 1910 -0.4106 1911 -0.3658 1912 -0.2942 1913 -0.3262 1914 -0.1550 1915 -0.0634 1916 -0.2221 1917 -0.1914 1918 -0.1047 1919 -0.1069 1920 -0.1496 1921 -0.1917 1922 -0.2529 1923 -0.2676 1924 -0.2602 1925 -0.2125 1926 -0.1456 1927 -0.2015 1928 -0.2270 1929 -0.2445 1930 -0.1589 1931 -0.1560 1932 -0.2155 1933 -0.2176 1934 -0.1518 1935 -0.1643 1936 -0.1320 1937 -0.0622 1938 -0.1065 1939 -0.0995 1940 0.0038 1941 0.0670 1942 0.0283 1943 0.0414 1944 0.1085 1945 0.1134 1946 -0.0652 1947 -0.0832 1948 -0.0804 1949 -0.1268 1950 -0.1459 1951 -0.0599 1952 -0.0148 1953 -0.0451 1954 -0.1484 1955 -0.2072 1956 -0.1791 1957 -0.0044 1958 0.0427 1959 -0.0019 1960 -0.0265 1961 -0.0301 1962 -0.0492 1963 -0.0354 1964 -0.1583 1965 -0.1114 1966 -0.0727 1967 -0.0842 1968 -0.0972 1969 0.0210 1970 -0.0347 1971 -0.1427 1972 0.0688 1973 0.0094 1974 -0.1128 1975 -0.1282 1976 -0.0875 1977 0.0730 1978 0.0178 1979 0.1345 1980 0.1261 1981 0.0820 1982 0.0212 1983 0.1250 1984 0.0289 1985 -0.0238 1986 0.0136 1987 0.1395 1988 0.0777 1989 0.0443 1990 0.1853 1991 0.1301 1992 -0.0456 1993 0.0238 1994 0.0835 1995 0.1052 1996 0.0604 1997 0.1810 1998 0.2638 1999 0.0586 2000 0.0995 2001 0.1587 2002 0.2421 2003 0.2388 2004 0.2038 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, interpolated red). 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