1850 NaN 1851 NaN 1852 NaN 1853 NaN 1854 NaN 1855 NaN 1856 -0.1087 1857 -0.3440 1858 -0.2535 1859 -0.1997 1860 -0.2872 1861 -0.3213 1862 -0.2825 1863 -0.2682 1864 -0.2205 1865 -0.0258 1866 0.0166 1867 -0.0860 1868 -0.0541 1869 -0.1825 1870 -0.2651 1871 -0.2240 1872 -0.2111 1873 -0.2296 1874 -0.3256 1875 -0.2385 1876 -0.2946 1877 0.0447 1878 0.0692 1879 -0.1791 1880 -0.2278 1881 -0.1504 1882 -0.1989 1883 -0.1678 1884 -0.1845 1885 -0.1496 1886 -0.1085 1887 -0.2264 1888 -0.0592 1889 -0.0326 1890 -0.2648 1891 -0.1168 1892 -0.2482 1893 -0.3048 1894 -0.2734 1895 -0.1625 1896 -0.0142 1897 0.0130 1898 -0.2252 1899 -0.1350 1900 -0.0133 1901 -0.1530 1902 -0.1953 1903 -0.3409 1904 -0.3730 1905 -0.2180 1906 -0.2216 1907 -0.2926 1908 -0.3800 1909 -0.3615 1910 -0.3711 1911 -0.3359 1912 -0.2224 1913 -0.2857 1914 -0.1344 1915 -0.0579 1916 -0.3082 1917 -0.3873 1918 -0.2664 1919 -0.1880 1920 -0.1664 1921 -0.2506 1922 -0.2913 1923 -0.2393 1924 -0.2637 1925 -0.1955 1926 -0.0254 1927 -0.1242 1928 -0.1659 1929 -0.2310 1930 -0.0781 1931 -0.0324 1932 -0.1131 1933 -0.1514 1934 -0.1113 1935 -0.1173 1936 -0.0226 1937 0.0576 1938 0.0326 1939 -0.0437 1940 0.0318 1941 0.1837 1942 0.0210 1943 -0.0169 1944 0.1485 1945 0.0858 1946 -0.1422 1947 -0.1281 1948 -0.1222 1949 -0.1093 1950 -0.1319 1951 -0.0429 1952 0.0298 1953 0.0363 1954 -0.1491 1955 -0.1794 1956 -0.1645 1957 0.0729 1958 0.0943 1959 0.0450 1960 0.0153 1961 0.0165 1962 -0.0171 1963 0.0219 1964 -0.1844 1965 -0.1471 1966 -0.0255 1967 -0.0688 1968 -0.0703 1969 0.1088 1970 -0.0261 1971 -0.2230 1972 0.0164 1973 0.0253 1974 -0.1304 1975 -0.1825 1976 -0.1611 1977 0.0075 1978 -0.0412 1979 0.0497 1980 0.0607 1981 -0.0244 1982 0.0801 1983 0.1607 1984 0.0281 1985 -0.0174 1986 0.0617 1987 0.2256 1988 0.1511 1989 0.1028 1990 0.2016 1991 0.1860 1992 0.0688 1993 0.0825 1994 0.1319 1995 0.1972 1996 0.1204 1997 0.2956 1998 0.4276 1999 0.1710 2000 0.1965 2001 0.2844 2002 0.3022 2003 0.3395 2004 0.3184 2005 0.3434 2006 0.3296 2007 0.2360 2008 NaN 2009 NaN Sea-surface temperature anomalies relative to 1961-1990: Kaplan et al. (1998, blue), Kaplan, A., M. Cane, Y. Kushnir, A. Clement, M. Blumenthal, and B. Rajagopalan, Analyses of global sea surface temperature 1856-1991, Journal of Geophysical Research, 103, 18,567-18,589, 1998. publically available from: http://ghrsst.nodc.noaa.gov/intercomp.html Original data source contact: Alexey Kaplan at Lamont-Doherty Earth Observatory http://iridl.ldeo.columbia.edu/SOURCES/.KAPLAN/.EXTENDED/