8 226 Carbon flux from land-use change. To be published in papers from IPCC Feedbacks Meeting, Woods Hole, Oct 1993. Linear extrapolation for 1765 to 1850. Units are time in years, annual carbon flux in gigatons of C. Source: R.A. Houghton, Woods Hole Research Center, Woods Hole, Massachusetts, U.S.A. Time Carbon flux 1765.5 0.200 1766.5 0.203 1767.5 0.206 1768.5 0.208 1769.5 0.211 1770.5 0.214 1771.5 0.217 1772.5 0.219 1773.5 0.222 1774.5 0.225 1775.5 0.228 1776.5 0.231 1777.5 0.233 1778.5 0.236 1779.5 0.239 1780.5 0.242 1781.5 0.244 1782.5 0.247 1783.5 0.250 1784.5 0.253 1785.5 0.255 1786.5 0.258 1787.5 0.261 1788.5 0.264 1789.5 0.267 1790.5 0.269 1791.5 0.272 1792.5 0.275 1793.5 0.278 1794.5 0.280 1795.5 0.283 1796.5 0.286 1797.5 0.289 1798.5 0.292 1799.5 0.294 1800.5 0.297 1801.5 0.300 1802.5 0.303 1803.5 0.305 1804.5 0.308 1805.5 0.311 1806.5 0.314 1807.5 0.316 1808.5 0.319 1809.5 0.322 1810.5 0.325 1811.5 0.328 1812.5 0.330 1813.5 0.333 1814.5 0.336 1815.5 0.339 1816.5 0.341 1817.5 0.344 1818.5 0.347 1819.5 0.350 1820.5 0.353 1821.5 0.355 1822.5 0.358 1823.5 0.361 1824.5 0.364 1825.5 0.366 1826.5 0.369 1827.5 0.372 1828.5 0.375 1829.5 0.377 1830.5 0.380 1831.5 0.383 1832.5 0.386 1833.5 0.389 1834.5 0.391 1835.5 0.394 1836.5 0.397 1837.5 0.400 1838.5 0.402 1839.5 0.405 1840.5 0.408 1841.5 0.411 1842.5 0.414 1843.5 0.416 1844.5 0.419 1845.5 0.422 1846.5 0.425 1847.5 0.427 1848.5 0.430 1849.5 0.433 1850.5 0.436 1851.5 0.468 1852.5 0.482 1853.5 0.494 1854.5 0.504 1855.5 0.512 1856.5 0.519 1857.5 0.525 1858.5 0.530 1859.5 0.534 1860.5 0.542 1861.5 0.534 1862.5 0.539 1863.5 0.544 1864.5 0.549 1865.5 0.554 1866.5 0.557 1867.5 0.560 1868.5 0.564 1869.5 0.569 1870.5 0.572 1871.5 0.582 1872.5 0.588 1873.5 0.592 1874.5 0.596 1875.5 0.600 1876.5 0.605 1877.5 0.607 1878.5 0.609 1879.5 0.610 1880.5 0.611 1881.5 0.642 1882.5 0.656 1883.5 0.663 1884.5 0.668 1885.5 0.673 1886.5 0.677 1887.5 0.678 1888.5 0.679 1889.5 0.679 1890.5 0.687 1891.5 0.684 1892.5 0.685 1893.5 0.684 1894.5 0.683 1895.5 0.682 1896.5 0.680 1897.5 0.680 1898.5 0.681 1899.5 0.683 1900.5 0.686 1901.5 0.749 1902.5 0.767 1903.5 0.782 1904.5 0.795 1905.5 0.806 1906.5 0.817 1907.5 0.822 1908.5 0.825 1909.5 0.827 1910.5 0.828 1911.5 0.773 1912.5 0.757 1913.5 0.746 1914.5 0.743 1915.5 0.734 1916.5 0.737 1917.5 0.736 1918.5 0.736 1919.5 0.736 1920.5 0.736 1921.5 0.785 1922.5 0.799 1923.5 0.811 1924.5 0.817 1925.5 0.827 1926.5 0.825 1927.5 0.824 1928.5 0.805 1929.5 0.780 1930.5 0.775 1931.5 0.783 1932.5 0.779 1933.5 0.774 1934.5 0.768 1935.5 0.762 1936.5 0.767 1937.5 0.765 1938.5 0.762 1939.5 0.757 1940.5 0.751 1941.5 0.730 1942.5 0.723 1943.5 0.716 1944.5 0.712 1945.5 0.709 1946.5 0.758 1947.5 0.768 1948.5 0.774 1949.5 0.776 1950.5 0.782 1951.5 0.946 1952.5 0.987 1953.5 0.992 1954.5 1.089 1955.5 1.126 1956.5 1.155 1957.5 1.091 1958.5 1.083 1959.5 1.087 1960.5 1.085 1961.5 1.232 1962.5 1.271 1963.5 1.309 1964.5 1.339 1965.5 1.363 1966.5 1.333 1967.5 1.332 1968.5 1.345 1969.5 1.350 1970.5 1.297 1971.5 1.277 1972.5 1.246 1973.5 1.279 1974.5 1.259 1975.5 1.255 1976.5 1.339 1977.5 1.363 1978.5 1.363 1979.5 1.404 1980.5 1.415 1981.5 1.435 1982.5 1.479 1983.5 1.510 1984.5 1.567 1985.5 1.596 1986.5 1.661 1987.5 1.694 1988.5 1.711 1989.5 1.705 1990.5 1.713