Global-Mean Greenhouse Gas Mixing Ratios Used in GISS 2004 GCM --------------------------------------------------------------- CO2 N2O CH4 CFC-11 CFC-12 others Year ppm ppm ppm ppb ppb ppb ------------------------------------------------- 1850 285.2 .2754 .791 .000 .000 .000 1851 285.1 .2755 .792 .000 .000 .000 1852 285.0 .2756 .794 .000 .000 .000 1853 285.0 .2757 .795 .000 .000 .000 1854 284.9 .2758 .797 .000 .000 .000 1855 285.1 .2759 .798 .000 .000 .000 1856 285.4 .2760 .799 .000 .000 .000 1857 285.6 .2761 .801 .000 .000 .000 1858 285.9 .2762 .802 .000 .000 .000 1859 286.1 .2763 .804 .000 .000 .000 1860 286.4 .2764 .805 .000 .000 .000 1861 286.6 .2765 .807 .000 .000 .000 1862 286.7 .2766 .808 .000 .000 .000 1863 286.8 .2767 .810 .000 .000 .000 1864 286.9 .2768 .811 .000 .000 .000 1865 287.0 .2769 .813 .000 .000 .000 1866 287.1 .2770 .815 .000 .000 .000 1867 287.2 .2771 .816 .000 .000 .000 1868 287.4 .2772 .818 .000 .000 .000 1869 287.5 .2773 .819 .000 .000 .000 1870 287.7 .2774 .821 .000 .000 .000 1871 287.9 .2774 .823 .000 .000 .000 1872 288.0 .2775 .824 .000 .000 .000 1873 288.2 .2776 .826 .000 .000 .000 1874 288.4 .2777 .827 .000 .000 .000 1875 288.6 .2778 .829 .000 .000 .000 1876 288.7 .2778 .831 .000 .000 .000 1877 288.9 .2779 .832 .000 .000 .000 1878 289.5 .2780 .834 .000 .000 .000 1879 290.1 .2781 .835 .000 .000 .000 1880 290.8 .2782 .837 .000 .000 .000 1881 291.4 .2783 .839 .000 .000 .000 1882 292.0 .2784 .841 .000 .000 .000 1883 292.5 .2785 .843 .000 .000 .000 1884 292.9 .2786 .845 .000 .000 .000 1885 293.3 .2787 .846 .000 .000 .000 1886 293.8 .2788 .848 .000 .000 .000 1887 294.0 .2789 .850 .000 .000 .000 1888 294.1 .2789 .852 .000 .000 .000 1889 294.2 .2790 .854 .000 .000 .000 1890 294.4 .2791 .856 .000 .000 .000 1891 294.6 .2792 .858 .000 .000 .000 1892 294.8 .2793 .861 .000 .000 .000 1893 294.7 .2794 .863 .000 .000 .000 1894 294.8 .2794 .865 .000 .000 .000 1895 294.8 .2795 .867 .000 .000 .000 1896 294.9 .2795 .870 .000 .000 .000 1897 294.9 .2796 .872 .000 .000 .000 1898 294.9 .2797 .874 .000 .000 .000 1899 295.3 .2797 .877 .000 .000 .000 1900 295.7 .2798 .879 .000 .000 .000 1901 296.2 .2799 .883 .000 .000 .000 1902 296.6 .2800 .887 .000 .000 .000 1903 297.0 .2801 .891 .000 .000 .000 1904 297.5 .2802 .896 .000 .000 .000 1905 298.0 .2803 .900 .000 .000 .000 1906 298.4 .2804 .905 .000 .000 .000 1907 298.8 .2805 .909 .000 .000 .000 1908 299.3 .2807 .914 .000 .000 .000 1909 299.7 .2808 .919 .000 .000 .000 1910 300.1 .2810 .924 .000 .000 .000 1911 300.6 .2811 .928 .000 .000 .000 1912 301.0 .2813 .933 .000 .000 .000 1913 301.3 .2815 .938 .000 .000 .000 1914 301.4 .2816 .944 .000 .000 .000 1915 301.6 .2818 .949 .000 .000 .000 1916 302.0 .2820 .955 .000 .000 .000 1917 302.4 .2822 .960 .000 .000 .000 1918 302.8 .2825 .966 .000 .000 .000 1919 303.0 .2827 .972 .000 .000 .000 1920 303.4 .2829 .978 .000 .000 .000 1921 303.7 .2832 .983 .000 .000 .000 1922 304.1 .2834 .989 .000 .000 .000 1923 304.5 .2836 .995 .000 .000 .000 1924 304.9 .2838 1.001 .000 .000 .000 1925 305.3 .2840 1.007 .000 .000 .000 1926 305.8 .2842 1.013 .000 .000 .000 1927 306.2 .2845 1.019 .000 .000 .000 1928 306.6 .2846 1.025 .000 .000 .000 1929 307.1 .2848 1.031 .000 .000 .000 1930 307.5 .2850 1.036 .000 .000 .001 1931 308.0 .2851 1.042 .000 .000 .001 1932 308.3 .2853 1.047 .000 .000 .002 1933 308.9 .2855 1.053 .000 .000 .002 1934 309.3 .2857 1.058 .000 .000 .003 1935 309.7 .2859 1.063 .000 .000 .003 1936 310.1 .2861 1.068 .000 .000 .003 1937 310.6 .2863 1.073 .000 .000 .004 1938 311.0 .2864 1.078 .000 .001 .004 1939 311.3 .2866 1.083 .000 .001 .005 1940 311.3 .2867 1.088 .000 .001 .005 1941 311.0 .2869 1.094 .000 .001 .006 1942 310.7 .2871 1.099 .000 .002 .007 1943 310.5 .2873 1.104 .000 .002 .008 1944 310.2 .2875 1.109 .000 .003 .009 1945 310.2 .2878 1.115 .000 .004 .010 1946 310.3 .2880 1.120 .000 .004 .011 1947 310.4 .2883 1.127 .000 .005 .012 1948 310.5 .2885 1.133 .000 .007 .013 1949 310.9 .2888 1.140 .001 .008 .014 1950 311.3 .2890 1.147 .001 .009 .015 1951 311.8 .2892 1.155 .001 .011 .016 1952 312.2 .2894 1.163 .002 .013 .017 1953 312.6 .2897 1.173 .002 .015 .017 1954 313.2 .2899 1.182 .003 .017 .018 1955 313.7 .2901 1.192 .004 .020 .019 1956 314.2 .2904 1.202 .005 .023 .020 1957 314.8 .2906 1.213 .007 .026 .021 1958 315.3 .2908 1.224 .008 .030 .021 1959 316.2 .2911 1.235 .009 .034 .022 1960 317.1 .2914 1.247 .011 .038 .023 1961 317.7 .2917 1.259 .013 .043 .025 1962 318.4 .2919 1.272 .016 .049 .026 1963 319.1 .2922 1.285 .019 .056 .027 1964 319.6 .2926 1.298 .023 .063 .029 1965 320.2 .2930 1.312 .028 .072 .031 1966 321.6 .2934 1.326 .033 .082 .035 1967 322.3 .2938 1.340 .039 .093 .039 1968 323.0 .2942 1.355 .045 .105 .044 1969 324.2 .2947 1.370 .053 .119 .048 1970 325.5 .2952 1.386 .062 .133 .052 1971 326.4 .2957 1.401 .071 .148 .059 1972 327.5 .2962 1.417 .082 .166 .065 1973 329.4 .2968 1.433 .095 .185 .071 1974 330.2 .2974 1.449 .108 .204 .078 1975 331.4 .2980 1.465 .118 .221 .085 1976 331.9 .2986 1.481 .129 .237 .093 1977 333.7 .2994 1.497 .140 .255 .102 1978 335.4 .3000 1.514 .148 .269 .110 1979 337.1 .3009 1.530 .157 .285 .119 1980 339.0 .3012 1.547 .166 .299 .127 1981 340.4 .3022 1.567 .174 .319 .137 1982 341.6 .3032 1.586 .183 .336 .148 1983 342.5 .3038 1.606 .192 .353 .158 1984 344.2 .3045 1.625 .201 .368 .169 1985 345.7 .3049 1.638 .212 .385 .179 1986 347.1 .3061 1.651 .223 .408 .193 1987 348.9 .3059 1.663 .234 .426 .208 1988 351.5 .3070 1.673 .245 .445 .222 1989 353.1 .3088 1.684 .255 .463 .237 1990 354.3 .3094 1.693 .263 .479 .251 1991 355.7 .3103 1.704 .268 .492 .266 1992 356.4 .3104 1.714 .271 .504 .319 1993 357.1 .3112 1.715 .272 .511 .325 1994 358.6 .3114 1.721 .272 .518 .334 1995 360.7 .3124 1.728 .271 .523 .337 1996 362.6 .3130 1.730 .270 .526 .343 1997 363.5 .3138 1.733 .269 .528 .348 1998 366.3 .3145 1.743 .267 .531 .353 1999 368.4 .3154 1.751 .265 .532 .358 2000 369.6 .3163 1.752 .263 .534 .364 -------------------------------------------------