------------------------------------------------------ GHG Forcings (W/m2) Used in Fig. S1 and Fig. 1 ------------------------------------------------------ year Total 1850 0.213 1851 0.213 1852 0.213 1853 0.215 1854 0.215 1855 0.225 1856 0.232 1857 0.238 1858 0.245 1859 0.252 1860 0.259 1861 0.265 1862 0.269 1863 0.273 1864 0.276 1865 0.285 1866 0.289 1867 0.292 1868 0.297 1869 0.300 1870 0.306 1871 0.312 1872 0.315 1873 0.322 1874 0.327 1875 0.337 1876 0.341 1877 0.347 1878 0.361 1879 0.373 1880 0.389 1881 0.403 1882 0.417 1883 0.429 1884 0.439 1885 0.453 1886 0.465 1887 0.471 1888 0.475 1889 0.479 1890 0.485 1891 0.491 1892 0.496 1893 0.498 1894 0.500 1895 0.507 1896 0.512 1897 0.515 1898 0.517 1899 0.528 1900 0.538 1901 0.552 1902 0.564 1903 0.576 1904 0.590 1905 0.607 1906 0.619 1907 0.632 1908 0.646 1909 0.659 1910 0.672 1911 0.685 1912 0.698 1913 0.708 1914 0.721 1915 0.730 1916 0.742 1917 0.755 1918 0.769 1919 0.779 1920 0.792 1921 0.804 1922 0.818 1923 0.834 1924 0.848 1925 0.861 1926 0.876 1927 0.890 1928 0.903 1929 0.924 1930 0.935 1931 0.949 1932 0.961 1933 0.976 1934 0.989 1935 1.006 1936 1.019 1937 1.032 1938 1.044 1939 1.055 1940 1.064 1941 1.065 1942 1.065 1943 1.071 1944 1.071 1945 1.077 1946 1.083 1947 1.098 1948 1.104 1949 1.118 1950 1.138 1951 1.154 1952 1.173 1953 1.190 1954 1.212 1955 1.230 1956 1.258 1957 1.286 1958 1.310 1959 1.344 1960 1.374 1961 1.405 1962 1.433 1963 1.464 1964 1.494 1965 1.521 1966 1.569 1967 1.602 1968 1.640 1969 1.686 1970 1.730 1971 1.776 1972 1.821 1973 1.887 1974 1.927 1975 1.978 1976 2.016 1977 2.081 1978 2.139 1979 2.197 1980 2.259 1981 2.314 1982 2.359 1983 2.416 1984 2.471 1985 2.524 1986 2.578 1987 2.630 1988 2.696 1989 2.756 1990 2.803 1991 2.848 1992 2.886 1993 2.905 1994 2.944 1995 2.983 1996 3.020 1997 3.051 1998 3.105 1999 3.149 2000 3.179 2001 3.208 2002 3.250 2003 3.297 2004 3.333 2005 3.367 2006 3.406 2007 3.446 2008 3.488 2009 3.524 2010 3.567 2011 3.608 2012 3.651 2013 3.701 2014 3.746 2015 3.793 2016 3.850 2017 3.890 2018 3.940 2019 3.986 2020 4.032 2021 4.080 2022 4.129