6 336 4 Source: J.A. Taylor, J. Lloyd, and G. Farquhar Australian National University Canberra, Australia Model A: Specified emission reduction scenarios - CO2 concentration (ppm) YEAR DEC0 DEC1 DEC2 1766.0 285.85 285.85 285.85 1767.0 285.50 285.50 285.50 1768.0 285.25 285.25 285.25 1769.0 285.04 285.04 285.04 1770.0 284.87 284.87 284.87 1771.0 284.73 284.73 284.73 1772.0 284.63 284.63 284.63 1773.0 284.54 284.54 284.54 1774.0 284.48 284.48 284.48 1775.0 284.43 284.43 284.43 1776.0 284.39 284.39 284.39 1777.0 284.36 284.36 284.36 1778.0 284.34 284.34 284.34 1779.0 284.32 284.32 284.32 1780.0 284.31 284.31 284.31 1781.0 284.29 284.29 284.29 1782.0 284.29 284.29 284.29 1783.0 284.28 284.28 284.28 1784.0 284.28 284.28 284.28 1785.0 284.29 284.29 284.29 1786.0 284.30 284.30 284.30 1787.0 284.32 284.32 284.32 1788.0 284.34 284.34 284.34 1789.0 284.37 284.37 284.37 1790.0 284.40 284.40 284.40 1791.0 284.42 284.42 284.42 1792.0 284.46 284.46 284.46 1793.0 284.49 284.49 284.49 1794.0 284.52 284.52 284.52 1795.0 284.56 284.56 284.56 1796.0 284.60 284.60 284.60 1797.0 284.63 284.63 284.63 1798.0 284.68 284.68 284.68 1799.0 284.72 284.72 284.72 1800.0 284.76 284.76 284.76 1801.0 284.80 284.80 284.80 1802.0 284.84 284.84 284.84 1803.0 284.89 284.89 284.89 1804.0 284.93 284.93 284.93 1805.0 284.98 284.98 284.98 1806.0 285.03 285.03 285.03 1807.0 285.07 285.07 285.07 1808.0 285.12 285.12 285.12 1809.0 285.16 285.16 285.16 1810.0 285.21 285.21 285.21 1811.0 285.25 285.25 285.25 1812.0 285.30 285.30 285.30 1813.0 285.34 285.34 285.34 1814.0 285.38 285.38 285.38 1815.0 285.42 285.42 285.42 1816.0 285.46 285.46 285.46 1817.0 285.51 285.51 285.51 1818.0 285.55 285.55 285.55 1819.0 285.60 285.60 285.60 1820.0 285.64 285.64 285.64 1821.0 285.69 285.69 285.69 1822.0 285.74 285.74 285.74 1823.0 285.78 285.78 285.78 1824.0 285.82 285.82 285.82 1825.0 285.87 285.87 285.87 1826.0 285.91 285.91 285.91 1827.0 285.95 285.95 285.95 1828.0 285.99 285.99 285.99 1829.0 286.04 286.04 286.04 1830.0 286.08 286.08 286.08 1831.0 286.12 286.12 286.12 1832.0 286.17 286.17 286.17 1833.0 286.21 286.21 286.21 1834.0 286.26 286.26 286.26 1835.0 286.31 286.31 286.31 1836.0 286.36 286.36 286.36 1837.0 286.41 286.41 286.41 1838.0 286.46 286.46 286.46 1839.0 286.50 286.50 286.50 1840.0 286.55 286.55 286.55 1841.0 286.60 286.60 286.60 1842.0 286.64 286.64 286.64 1843.0 286.69 286.69 286.69 1844.0 286.74 286.74 286.74 1845.0 286.79 286.79 286.79 1846.0 286.84 286.84 286.84 1847.0 286.89 286.89 286.89 1848.0 286.95 286.95 286.95 1849.0 287.01 287.01 287.01 1850.0 287.07 287.07 287.07 1851.0 287.13 287.13 287.13 1852.0 287.19 287.19 287.19 1853.0 287.27 287.27 287.27 1854.0 287.34 287.34 287.34 1855.0 287.41 287.41 287.41 1856.0 287.49 287.49 287.49 1857.0 287.57 287.57 287.57 1858.0 287.65 287.65 287.65 1859.0 287.73 287.73 287.73 1860.0 287.81 287.81 287.81 1861.0 287.90 287.90 287.90 1862.0 287.99 287.99 287.99 1863.0 288.08 288.08 288.08 1864.0 288.18 288.18 288.18 1865.0 288.29 288.29 288.29 1866.0 288.39 288.39 288.39 1867.0 288.50 288.50 288.50 1868.0 288.61 288.61 288.61 1869.0 288.72 288.72 288.72 1870.0 288.83 288.83 288.83 1871.0 288.95 288.95 288.95 1872.0 289.08 289.08 289.08 1873.0 289.21 289.21 289.21 1874.0 289.34 289.34 289.34 1875.0 289.47 289.47 289.47 1876.0 289.60 289.60 289.60 1877.0 289.73 289.73 289.73 1878.0 289.87 289.87 289.87 1879.0 290.01 290.01 290.01 1880.0 290.16 290.16 290.16 1881.0 290.32 290.32 290.32 1882.0 290.48 290.48 290.48 1883.0 290.64 290.64 290.64 1884.0 290.81 290.81 290.81 1885.0 290.96 290.96 290.96 1886.0 291.12 291.12 291.12 1887.0 291.28 291.28 291.28 1888.0 291.45 291.45 291.45 1889.0 291.62 291.62 291.62 1890.0 291.80 291.80 291.80 1891.0 291.97 291.97 291.97 1892.0 292.15 292.15 292.15 1893.0 292.33 292.33 292.33 1894.0 292.50 292.50 292.50 1895.0 292.69 292.69 292.69 1896.0 292.88 292.88 292.88 1897.0 293.07 293.07 293.07 1898.0 293.27 293.27 293.27 1899.0 293.48 293.48 293.48 1900.0 293.70 293.70 293.70 1901.0 293.93 293.93 293.93 1902.0 294.16 294.16 294.16 1903.0 294.42 294.42 294.42 1904.0 294.67 294.67 294.67 1905.0 294.94 294.94 294.94 1906.0 295.22 295.22 295.22 1907.0 295.53 295.53 295.53 1908.0 295.82 295.82 295.82 1909.0 296.11 296.11 296.11 1910.0 296.41 296.41 296.41 1911.0 296.71 296.71 296.71 1912.0 297.02 297.02 297.02 1913.0 297.35 297.35 297.35 1914.0 297.63 297.63 297.63 1915.0 297.90 297.90 297.90 1916.0 298.19 298.19 298.19 1917.0 298.50 298.50 298.50 1918.0 298.80 298.80 298.80 1919.0 299.06 299.06 299.06 1920.0 299.37 299.37 299.37 1921.0 299.63 299.63 299.63 1922.0 299.91 299.91 299.91 1923.0 300.24 300.24 300.24 1924.0 300.55 300.55 300.55 1925.0 300.87 300.87 300.87 1926.0 301.17 301.17 301.17 1927.0 301.53 301.53 301.53 1928.0 301.89 301.89 301.89 1929.0 302.28 302.28 302.28 1930.0 302.60 302.60 302.60 1931.0 302.88 302.88 302.88 1932.0 303.12 303.12 303.12 1933.0 303.38 303.38 303.38 1934.0 303.67 303.67 303.67 1935.0 303.96 303.96 303.96 1936.0 304.29 304.29 304.29 1937.0 304.64 304.64 304.64 1938.0 304.94 304.94 304.94 1939.0 305.26 305.26 305.26 1940.0 305.60 305.60 305.60 1941.0 305.94 305.94 305.94 1942.0 306.29 306.29 306.29 1943.0 306.65 306.65 306.65 1944.0 307.02 307.02 307.02 1945.0 307.31 307.31 307.31 1946.0 307.65 307.65 307.65 1947.0 308.05 308.05 308.05 1948.0 308.50 308.50 308.50 1949.0 308.92 308.92 308.92 1950.0 309.41 309.41 309.41 1951.0 309.95 309.95 309.95 1952.0 310.52 310.52 310.52 1953.0 311.13 311.13 311.13 1954.0 311.74 311.74 311.74 1955.0 312.44 312.44 312.44 1956.0 313.22 313.22 313.22 1957.0 314.03 314.03 314.03 1958.0 314.83 314.83 314.83 1959.0 315.63 315.63 315.63 1960.0 316.47 316.47 316.47 1961.0 317.29 317.29 317.29 1962.0 318.14 318.14 318.14 1963.0 319.03 319.03 319.03 1964.0 319.98 319.98 319.98 1965.0 320.96 320.96 320.96 1966.0 321.99 321.99 321.99 1967.0 323.04 323.04 323.04 1968.0 324.12 324.12 324.12 1969.0 325.27 325.27 325.27 1970.0 326.49 326.49 326.49 1971.0 327.74 327.74 327.74 1972.0 329.01 329.01 329.01 1973.0 330.36 330.36 330.36 1974.0 331.70 331.70 331.70 1975.0 332.99 332.99 332.99 1976.0 334.35 334.35 334.35 1977.0 335.73 335.73 335.73 1978.0 337.09 337.09 337.09 1979.0 338.55 338.55 338.55 1980.0 339.91 339.91 339.91 1981.0 341.19 341.19 341.19 1982.0 342.45 342.45 342.45 1983.0 343.67 343.67 343.67 1984.0 344.96 344.96 344.96 1985.0 346.31 346.31 346.31 1986.0 347.73 347.73 347.73 1987.0 349.16 349.16 349.16 1988.0 350.68 350.68 350.68 1989.0 352.24 352.24 352.24 1990.0 353.83 353.83 353.83 1991.0 355.42 355.42 355.42 1992.0 357.06 357.06 357.06 1993.0 358.73 358.73 358.73 1994.0 360.42 360.42 360.42 1995.0 362.14 362.14 362.14 1996.0 363.89 363.89 363.89 1997.0 365.69 365.69 365.69 1998.0 367.53 367.53 367.53 1999.0 369.41 369.41 369.41 2000.0 371.31 371.31 371.31 2001.0 373.26 373.26 373.26 2002.0 375.22 375.19 375.15 2003.0 377.16 377.07 376.98 2004.0 379.10 378.92 378.74 2005.0 381.03 380.74 380.45 2006.0 382.96 382.53 382.11 2007.0 384.86 384.28 383.71 2008.0 386.76 385.99 385.26 2009.0 388.63 387.67 386.74 2010.0 390.50 389.31 388.19 2011.0 392.34 390.92 389.58 2012.0 394.18 392.50 390.93 2013.0 396.01 394.05 392.24 2014.0 397.84 395.59 393.52 2015.0 399.65 397.09 394.76 2016.0 401.46 398.58 395.96 2017.0 403.27 400.05 397.14 2018.0 405.08 401.50 398.29 2019.0 406.90 402.94 399.42 2020.0 408.72 404.37 400.53 2021.0 410.56 405.79 401.63 2022.0 412.40 407.22 402.72 2023.0 414.25 408.63 403.80 2024.0 416.12 410.05 404.87 2025.0 418.00 411.46 405.93 2026.0 419.89 412.87 406.97 2027.0 421.78 414.27 408.01 2028.0 423.66 415.64 409.00 2029.0 425.51 416.99 409.97 2030.0 427.34 418.29 410.91 2031.0 429.17 419.58 411.80 2032.0 430.99 420.83 412.66 2033.0 432.81 422.08 413.52 2034.0 434.63 423.31 414.35 2035.0 436.45 424.53 415.16 2036.0 438.27 425.73 415.95 2037.0 440.10 426.93 416.73 2038.0 441.94 428.14 417.51 2039.0 443.83 429.34 418.29 2040.0 445.71 430.58 419.07 2041.0 447.59 431.81 419.87 2042.0 449.48 433.01 420.66 2043.0 451.36 434.18 421.43 2044.0 453.23 435.35 422.15 2045.0 455.11 436.49 422.86 2046.0 456.99 437.62 423.55 2047.0 458.83 438.75 424.23 2048.0 460.65 439.86 424.88 2049.0 462.45 440.95 425.53 2050.0 464.22 441.99 426.16 2051.0 465.95 443.00 426.77 2052.0 467.69 443.99 427.36 2053.0 469.42 444.94 427.92 2054.0 471.14 445.86 428.43 2055.0 472.84 446.77 428.90 2056.0 474.57 447.66 429.35 2057.0 476.28 448.50 429.77 2058.0 477.98 449.31 430.17 2059.0 479.68 450.09 430.54 2060.0 481.35 450.86 430.89 2061.0 482.92 451.59 431.22 2062.0 484.47 452.31 431.51 2063.0 486.01 453.04 431.79 2064.0 487.52 453.76 432.09 2065.0 488.97 454.47 432.35 2066.0 490.48 455.17 432.57 2067.0 491.97 455.86 432.81 2068.0 493.44 456.53 433.02 2069.0 494.90 457.17 433.22 2070.0 496.40 457.77 433.41 2071.0 497.90 458.27 433.61 2072.0 499.41 458.74 433.80 2073.0 500.94 459.20 433.98 2074.0 502.47 459.66 434.13 2075.0 503.99 460.13 434.25 2076.0 505.50 460.65 434.36 2077.0 506.98 461.16 434.46 2078.0 508.42 461.59 434.55 2079.0 509.81 461.97 434.64 2080.0 511.21 462.30 434.72 2081.0 512.60 462.61 434.80 2082.0 513.99 462.91 434.87 2083.0 515.33 463.25 434.92 2084.0 516.66 463.61 434.94 2085.0 517.98 463.98 434.95 2086.0 519.31 464.34 434.93 2087.0 520.65 464.69 434.89 2088.0 522.02 465.00 434.83 2089.0 523.43 465.29 434.75 2090.0 524.82 465.56 434.64 2091.0 526.19 465.80 434.49 2092.0 527.55 466.01 434.31 2093.0 528.87 466.20 434.09 2094.0 530.15 466.40 433.84 2095.0 531.37 466.58 433.55 2096.0 532.57 466.77 433.24 2097.0 533.77 466.95 432.90 2098.0 534.97 467.13 432.58 2099.0 536.18 467.31 432.30 2100.0 537.38 467.47 432.06 2101.0 538.59 467.68 431.90