6 336 4 Source: D. Wuebbles and A. Jain Lawrence Livermore National Laboratory Livermore, California, U.S.A. Model L: Specified emission reduction scenarios - CO2 concentration (ppm) Time DEC0% DEC1% DEC2% 1765.50 278.820 278.820 278.820 1766.50 278.835 278.835 278.835 1767.50 278.864 278.864 278.864 1768.50 278.896 278.896 278.896 1769.50 278.931 278.931 278.931 1770.50 278.969 278.969 278.969 1771.50 279.010 279.010 279.010 1772.50 279.054 279.054 279.054 1773.50 279.101 279.101 279.101 1774.50 279.151 279.151 279.151 1775.50 279.204 279.204 279.204 1776.50 279.259 279.259 279.259 1777.50 279.319 279.319 279.319 1778.50 279.381 279.381 279.381 1779.50 279.446 279.446 279.446 1780.50 279.514 279.514 279.514 1781.50 279.586 279.586 279.586 1782.50 279.660 279.660 279.660 1783.50 279.738 279.738 279.738 1784.50 279.819 279.819 279.819 1785.50 279.904 279.904 279.904 1786.50 279.992 279.992 279.992 1787.50 280.083 280.083 280.083 1788.50 280.177 280.177 280.177 1789.50 280.275 280.275 280.275 1790.50 280.376 280.376 280.376 1791.50 280.480 280.480 280.480 1792.50 280.588 280.588 280.588 1793.50 280.699 280.699 280.699 1794.50 280.814 280.814 280.814 1795.50 280.932 280.932 280.932 1796.50 281.053 281.053 281.053 1797.50 281.178 281.178 281.178 1798.50 281.306 281.306 281.306 1799.50 281.437 281.437 281.437 1800.50 281.571 281.571 281.571 1801.50 281.707 281.707 281.707 1802.50 281.844 281.844 281.844 1803.50 281.983 281.983 281.983 1804.50 282.122 282.122 282.122 1805.50 282.263 282.263 282.263 1806.50 282.403 282.403 282.403 1807.50 282.542 282.542 282.542 1808.50 282.681 282.681 282.681 1809.50 282.819 282.819 282.819 1810.50 282.955 282.955 282.955 1811.50 283.089 283.089 283.089 1812.50 283.221 283.221 283.221 1813.50 283.350 283.350 283.350 1814.50 283.475 283.475 283.475 1815.50 283.597 283.597 283.597 1816.50 283.714 283.714 283.714 1817.50 283.827 283.827 283.827 1818.50 283.936 283.936 283.936 1819.50 284.040 284.040 284.040 1820.50 284.141 284.141 284.141 1821.50 284.239 284.239 284.239 1822.50 284.334 284.334 284.334 1823.50 284.427 284.427 284.427 1824.50 284.518 284.518 284.518 1825.50 284.607 284.607 284.607 1826.50 284.696 284.696 284.696 1827.50 284.785 284.785 284.785 1828.50 284.873 284.873 284.873 1829.50 284.962 284.962 284.962 1830.50 285.053 285.053 285.053 1831.50 285.145 285.145 285.145 1832.50 285.239 285.239 285.239 1833.50 285.336 285.336 285.336 1834.50 285.436 285.436 285.436 1835.50 285.540 285.540 285.540 1836.50 285.649 285.649 285.649 1837.50 285.763 285.763 285.763 1838.50 285.882 285.882 285.882 1839.50 286.006 286.006 286.006 1840.50 286.137 286.137 286.137 1841.50 286.274 286.274 286.274 1842.50 286.414 286.414 286.414 1843.50 286.556 286.556 286.556 1844.50 286.698 286.698 286.698 1845.50 286.838 286.838 286.838 1846.50 286.976 286.976 286.976 1847.50 287.112 287.112 287.112 1848.50 287.245 287.245 287.245 1849.50 287.375 287.375 287.375 1850.50 287.502 287.502 287.502 1851.50 287.626 287.626 287.626 1852.50 287.746 287.746 287.746 1853.50 287.863 287.863 287.863 1854.50 287.977 287.977 287.977 1855.50 288.087 288.087 288.087 1856.50 288.193 288.193 288.193 1857.50 288.297 288.297 288.297 1858.50 288.400 288.400 288.400 1859.50 288.502 288.502 288.502 1860.50 288.604 288.604 288.604 1861.50 288.706 288.706 288.706 1862.50 288.811 288.811 288.811 1863.50 288.918 288.918 288.918 1864.50 289.028 289.028 289.028 1865.50 289.143 289.143 289.143 1866.50 289.262 289.262 289.262 1867.50 289.387 289.387 289.387 1868.50 289.517 289.517 289.517 1869.50 289.654 289.654 289.654 1870.50 289.796 289.796 289.796 1871.50 289.944 289.944 289.944 1872.50 290.099 290.099 290.099 1873.50 290.261 290.261 290.261 1874.50 290.430 290.430 290.430 1875.50 290.607 290.607 290.607 1876.50 290.792 290.792 290.792 1877.50 290.984 290.984 290.984 1878.50 291.185 291.185 291.185 1879.50 291.392 291.392 291.392 1880.50 291.607 291.607 291.607 1881.50 291.829 291.829 291.829 1882.50 292.057 292.057 292.057 1883.50 292.290 292.290 292.290 1884.50 292.529 292.529 292.529 1885.50 292.772 292.772 292.772 1886.50 293.019 293.019 293.019 1887.50 293.269 293.269 293.269 1888.50 293.523 293.523 293.523 1889.50 293.778 293.778 293.778 1890.50 294.034 294.034 294.034 1891.50 294.291 294.291 294.291 1892.50 294.546 294.546 294.546 1893.50 294.799 294.799 294.799 1894.50 295.048 295.048 295.048 1895.50 295.293 295.293 295.293 1896.50 295.533 295.533 295.533 1897.50 295.771 295.771 295.771 1898.50 296.008 296.008 296.008 1899.50 296.245 296.245 296.245 1900.50 296.483 296.483 296.483 1901.50 296.726 296.726 296.726 1902.50 296.973 296.973 296.973 1903.50 297.227 297.227 297.227 1904.50 297.489 297.489 297.489 1905.50 297.759 297.759 297.759 1906.50 298.038 298.038 298.038 1907.50 298.323 298.323 298.323 1908.50 298.615 298.615 298.615 1909.50 298.911 298.911 298.911 1910.50 299.212 299.212 299.212 1911.50 299.515 299.515 299.515 1912.50 299.821 299.821 299.821 1913.50 300.129 300.129 300.129 1914.50 300.439 300.439 300.439 1915.50 300.750 300.750 300.750 1916.50 301.063 301.063 301.063 1917.50 301.376 301.376 301.376 1918.50 301.689 301.689 301.689 1919.50 302.003 302.003 302.003 1920.50 302.318 302.318 302.318 1921.50 302.632 302.632 302.632 1922.50 302.945 302.945 302.945 1923.50 303.258 303.258 303.258 1924.50 303.568 303.568 303.568 1925.50 303.875 303.875 303.875 1926.50 304.179 304.179 304.179 1927.50 304.477 304.477 304.477 1928.50 304.770 304.770 304.770 1929.50 305.057 305.057 305.057 1930.50 305.338 305.338 305.338 1931.50 305.615 305.615 305.615 1932.50 305.888 305.888 305.888 1933.50 306.157 306.157 306.157 1934.50 306.424 306.424 306.424 1935.50 306.689 306.689 306.689 1936.50 306.955 306.955 306.955 1937.50 307.221 307.221 307.221 1938.50 307.491 307.491 307.491 1939.50 307.765 307.765 307.765 1940.50 308.045 308.045 308.045 1941.50 308.332 308.332 308.332 1942.50 308.629 308.629 308.629 1943.50 308.937 308.937 308.937 1944.50 309.257 309.257 309.257 1945.50 309.590 309.590 309.590 1946.50 309.938 309.938 309.938 1947.50 310.302 310.302 310.302 1948.50 310.681 310.681 310.681 1949.50 311.078 311.078 311.078 1950.50 311.492 311.492 311.492 1951.50 311.925 311.925 311.925 1952.50 312.378 312.378 312.378 1953.50 312.853 312.853 312.853 1954.50 313.349 313.349 313.349 1955.50 313.869 313.869 313.869 1956.50 314.414 314.414 314.414 1957.50 314.985 314.985 314.985 1958.50 315.583 315.583 315.583 1959.50 316.209 316.209 316.209 1960.50 316.863 316.863 316.863 1961.50 317.539 317.539 317.539 1962.50 318.232 318.232 318.232 1963.50 318.941 318.941 318.941 1964.50 319.675 319.675 319.675 1965.50 320.447 320.447 320.447 1966.50 321.272 321.272 321.272 1967.50 322.159 322.159 322.159 1968.50 323.109 323.109 323.109 1969.50 324.122 324.122 324.122 1970.50 325.197 325.197 325.197 1971.50 326.326 326.326 326.326 1972.50 327.500 327.500 327.500 1973.50 328.710 328.710 328.710 1974.50 329.943 329.943 329.943 1975.50 331.198 331.198 331.198 1976.50 332.489 332.489 332.489 1977.50 333.828 333.828 333.828 1978.50 335.218 335.218 335.218 1979.50 336.649 336.649 336.649 1980.50 338.109 338.109 338.109 1981.50 339.589 339.589 339.589 1982.50 341.089 341.089 341.089 1983.50 342.611 342.611 342.611 1984.50 344.164 344.164 344.164 1985.50 345.751 345.751 345.751 1986.50 347.374 347.374 347.374 1987.50 349.034 349.034 349.034 1988.50 350.725 350.725 350.725 1989.50 352.433 352.433 352.433 1990.50 354.150 354.150 354.150 1991.50 355.865 355.865 355.865 1992.50 357.576 357.576 357.576 1993.50 359.282 359.282 359.282 1994.50 360.984 360.984 360.984 1995.50 362.683 362.683 362.683 1996.50 364.382 364.382 364.382 1997.50 366.082 366.082 366.082 1998.50 367.784 367.784 367.784 1999.50 369.487 369.487 369.487 2000.50 371.195 371.195 371.195 2001.50 372.891 372.875 372.859 2002.50 374.564 374.501 374.439 2003.50 376.215 376.078 375.943 2004.50 377.847 377.609 377.376 2005.50 379.462 379.099 378.744 2006.50 381.060 380.548 380.052 2007.50 382.644 381.960 381.302 2008.50 384.214 383.337 382.499 2009.50 385.771 384.680 383.646 2010.50 387.316 385.992 384.745 2011.50 388.850 387.274 385.800 2012.50 390.374 388.527 386.812 2013.50 391.888 389.752 387.783 2014.50 393.393 390.951 388.716 2015.50 394.890 392.125 389.612 2016.50 396.378 393.275 390.474 2017.50 397.859 394.401 391.302 2018.50 399.333 395.504 392.098 2019.50 400.799 396.585 392.863 2020.50 402.260 397.646 393.600 2021.50 403.714 398.685 394.308 2022.50 405.163 399.705 394.989 2023.50 406.605 400.706 395.645 2024.50 408.043 401.688 396.275 2025.50 409.476 402.652 396.882 2026.50 410.902 403.597 397.465 2027.50 412.323 404.523 398.023 2028.50 413.737 405.430 398.559 2029.50 415.146 406.320 399.072 2030.50 416.549 407.192 399.564 2031.50 417.947 408.046 400.036 2032.50 419.339 408.884 400.487 2033.50 420.727 409.706 400.919 2034.50 422.109 410.512 401.333 2035.50 423.487 411.302 401.728 2036.50 424.861 412.076 402.106 2037.50 426.230 412.836 402.466 2038.50 427.594 413.581 402.811 2039.50 428.955 414.311 403.139 2040.50 430.311 415.026 403.452 2041.50 431.663 415.728 403.750 2042.50 433.012 416.416 404.033 2043.50 434.356 417.091 404.302 2044.50 435.697 417.752 404.557 2045.50 437.034 418.400 404.798 2046.50 438.367 419.035 405.027 2047.50 439.697 419.657 405.243 2048.50 441.023 420.267 405.446 2049.50 442.346 420.864 405.638 2050.50 443.666 421.449 405.817 2051.50 444.979 422.019 405.983 2052.50 446.283 422.571 406.131 2053.50 447.577 423.106 406.262 2054.50 448.863 423.623 406.378 2055.50 450.141 424.124 406.478 2056.50 451.410 424.609 406.563 2057.50 452.672 425.078 406.633 2058.50 453.925 425.531 406.689 2059.50 455.171 425.969 406.732 2060.50 456.409 426.391 406.760 2061.50 457.639 426.799 406.776 2062.50 458.862 427.191 406.779 2063.50 460.078 427.569 406.769 2064.50 461.287 427.933 406.746 2065.50 462.488 428.283 406.712 2066.50 463.682 428.619 406.666 2067.50 464.870 428.941 406.609 2068.50 466.050 429.249 406.540 2069.50 467.224 429.544 406.460 2070.50 468.391 429.825 406.370 2071.50 469.551 430.094 406.268 2072.50 470.704 430.349 406.156 2073.50 471.851 430.592 406.034 2074.50 472.991 430.822 405.902 2075.50 474.124 431.039 405.760 2076.50 475.255 431.248 405.613 2077.50 476.389 431.454 405.465 2078.50 477.524 431.656 405.316 2079.50 478.661 431.853 405.166 2080.50 479.799 432.046 405.014 2081.50 480.938 432.235 404.860 2082.50 482.078 432.418 404.705 2083.50 483.219 432.597 404.547 2084.50 484.360 432.771 404.388 2085.50 485.501 432.941 404.227 2086.50 486.643 433.105 404.064 2087.50 487.785 433.264 403.899 2088.50 488.928 433.418 403.731 2089.50 490.070 433.568 403.562 2090.50 491.213 433.712 403.391 2091.50 492.355 433.851 403.218 2092.50 493.498 433.985 403.043 2093.50 494.640 434.115 402.865 2094.50 495.782 434.239 402.686 2095.50 496.924 434.358 402.505 2096.50 498.065 434.472 402.322 2097.50 499.207 434.582 402.138 2098.50 500.348 434.686 401.951 2099.50 501.488 434.786 401.763 2100.50 502.628 434.881 401.572