Annual Net Flux of Carbon to the Atmosphere from Land-Use Change: 1850-2000 Version corresponding to R.A. Houghton, 2002, Tellus (in press) Units = Tg C (1 teragram = 10^12 g) Year United Canada Tropical Europe North Tropical Former China Tropical Pacific TOTAL States America Africa and Africa Soviet Asia Developed FLUX Middle East Union Region 1850 161.58 6.34 22.17 55.04 3.98 5.61 58.56 101.84 85.63 2.05 502.80 1851 162.79 6.13 21.87 55.02 3.98 6.47 58.55 93.08 85.20 2.04 495.13 1852 227.30 6.08 21.59 54.99 3.98 6.60 58.88 83.83 85.25 2.04 550.54 1853 234.70 6.04 21.35 54.96 3.98 6.69 59.22 74.21 85.33 2.03 548.51 1854 241.93 5.99 21.13 54.93 3.98 6.77 59.58 64.31 85.42 2.03 546.07 1855 248.87 5.94 20.93 54.90 3.98 6.82 59.96 54.19 85.53 2.03 543.15 1856 255.39 5.90 20.76 54.87 3.98 6.86 60.34 52.56 85.65 2.02 548.33 1857 261.67 5.85 20.60 54.84 3.98 6.88 60.72 51.27 85.77 2.02 553.61 1858 267.57 5.81 20.46 54.81 3.98 6.90 61.10 50.23 85.90 2.01 558.78 1859 273.29 5.76 20.33 54.78 3.98 6.92 61.48 49.39 86.02 2.01 563.97 1860 279.15 5.72 19.89 54.75 3.98 6.93 61.85 48.70 86.14 2.01 569.12 1861 284.07 5.67 20.67 54.79 9.01 8.02 62.22 48.13 86.26 2.08 580.92 1862 231.02 7.29 20.90 54.86 9.96 8.18 53.69 47.77 86.38 2.18 522.23 1863 230.09 7.81 21.01 54.96 10.82 8.31 53.75 46.61 86.49 2.30 522.15 1864 229.16 8.33 21.06 55.06 11.25 8.41 53.80 46.16 86.61 2.43 522.27 1865 228.35 8.85 21.09 55.18 11.64 8.49 53.86 45.78 86.71 2.56 522.52 1866 227.84 9.38 20.69 55.31 11.99 8.53 53.74 45.45 86.81 2.70 522.44 1867 225.52 9.92 20.29 55.46 12.31 8.57 53.62 45.17 86.91 2.83 520.59 1868 222.98 10.46 19.91 55.61 12.61 8.59 53.51 44.92 87.01 2.96 518.56 1869 220.45 10.99 19.54 55.78 12.89 8.62 53.41 44.71 87.10 3.09 516.57 1870 217.91 11.54 19.53 55.95 13.15 8.64 53.32 44.52 87.18 3.21 514.95 1871 214.48 12.08 19.46 50.48 13.40 8.66 53.23 44.35 108.79 9.87 534.81 1872 293.23 12.62 19.32 49.60 13.64 8.67 53.49 44.20 113.96 11.93 620.66 1873 297.48 13.16 19.25 48.75 13.87 8.69 53.75 44.06 117.71 13.66 630.37 1874 301.43 13.69 19.20 47.95 14.09 8.70 54.01 41.95 120.51 14.33 635.86 1875 305.33 14.22 19.16 47.17 14.30 8.71 54.27 41.41 122.69 14.87 642.12 1876 308.94 14.75 19.27 46.53 14.47 9.79 54.94 40.87 124.08 15.35 649.00 1877 313.46 14.47 19.70 45.94 14.63 9.96 55.04 40.41 125.23 15.76 654.59 1878 317.45 14.46 20.12 45.39 14.79 10.08 55.13 40.32 126.23 16.12 660.07 1879 321.24 14.43 20.51 44.87 14.93 10.18 55.21 40.44 127.11 16.44 665.36 1880 325.28 14.39 20.89 44.39 15.07 10.26 55.30 40.59 127.91 16.75 670.83 1881 328.74 14.33 51.12 43.94 15.21 10.30 55.40 40.35 128.27 17.05 704.72 1882 272.47 14.26 59.53 43.52 15.35 10.33 55.51 40.13 128.59 17.34 657.03 1883 268.30 14.18 66.31 43.12 15.49 10.36 55.63 39.93 128.87 17.64 659.83 1884 264.06 14.08 71.92 42.74 15.63 10.39 55.76 39.75 129.13 17.94 661.40 1885 260.37 13.97 76.70 42.39 15.77 10.41 55.90 39.57 129.37 18.24 662.68 1886 256.56 13.85 79.48 42.56 15.90 11.71 56.03 39.40 129.59 18.54 663.61 1887 252.21 13.72 81.47 42.73 16.03 11.91 56.17 39.24 129.79 18.83 662.10 1888 247.52 13.58 83.11 42.92 16.16 12.06 56.30 39.08 129.98 19.12 659.84 1889 243.90 13.44 84.49 43.11 16.29 12.18 56.44 39.03 130.16 19.36 658.40 1890 240.44 13.30 85.65 43.31 16.42 12.28 56.57 38.98 130.32 19.60 656.87 1891 236.18 13.15 69.39 43.51 16.54 12.34 56.70 39.00 146.76 19.83 653.39 1892 248.68 13.03 66.11 43.72 16.66 12.38 56.83 39.03 150.78 20.06 667.26 1893 249.04 12.91 63.60 43.91 16.78 12.42 56.96 39.06 153.67 20.28 668.62 1894 250.53 12.80 61.66 44.11 16.90 12.45 57.08 54.58 155.83 20.50 686.45 1895 252.07 12.68 60.15 44.31 17.01 12.47 57.21 56.38 157.53 20.72 690.52 1896 251.68 12.56 59.13 44.50 17.12 12.50 57.33 58.08 158.61 20.93 692.44 1897 252.55 12.44 58.35 44.68 17.23 12.52 57.45 59.77 159.49 21.14 695.61 1898 251.49 12.32 57.75 44.86 17.34 12.53 57.57 61.37 160.22 21.35 696.80 1899 250.45 12.20 57.29 45.03 17.45 12.55 57.68 62.90 160.87 21.55 697.97 1900 247.06 12.08 56.93 45.19 17.55 12.56 57.79 64.36 161.44 21.75 696.73 1901 244.13 11.98 115.12 45.44 20.07 15.57 57.90 65.76 161.69 22.03 759.70 1902 195.99 24.76 131.78 45.70 20.58 16.02 58.05 82.73 161.98 22.34 759.92 1903 184.82 27.54 145.34 45.98 21.04 16.35 58.19 100.57 162.24 22.65 784.73 1904 172.27 30.23 156.70 46.28 21.29 16.61 58.33 119.01 162.47 22.97 806.16 1905 159.89 32.83 166.47 46.60 21.52 16.82 58.47 137.90 162.67 23.29 826.46 1906 150.00 35.37 170.93 46.93 21.72 16.93 58.59 157.13 170.77 23.62 851.99 1907 140.23 37.83 174.56 47.27 21.89 17.02 58.59 161.61 172.82 23.94 855.76 1908 132.66 40.24 177.57 47.62 22.05 17.10 58.58 165.49 174.30 24.25 859.85 1909 125.16 42.62 180.10 47.98 22.20 17.16 58.56 168.39 175.40 24.56 862.12 1910 117.56 44.97 182.03 48.35 22.33 17.21 58.54 170.92 176.27 24.87 863.05 1911 113.30 47.29 123.28 48.72 22.48 21.53 58.53 173.16 176.84 25.15 810.27 1912 87.95 49.62 106.42 49.10 22.59 22.20 58.51 173.63 177.30 25.41 772.72 1913 82.09 51.87 92.54 49.47 22.69 22.69 63.68 173.81 156.93 25.67 741.46 1914 76.72 54.11 80.76 49.85 22.79 23.08 65.23 177.79 152.36 25.91 728.60 1915 68.18 56.32 70.44 50.23 22.88 23.40 66.59 178.41 149.05 26.15 711.65 1916 59.66 58.53 66.56 50.66 22.93 23.57 67.89 178.76 153.45 26.39 708.40 1917 52.05 59.23 63.44 51.09 22.97 23.71 69.21 183.74 153.09 26.62 705.13 1918 45.33 59.90 60.87 51.51 23.01 23.82 70.48 188.77 152.93 26.84 703.46 1919 43.62 60.56 58.71 51.92 23.03 23.92 71.76 193.85 152.69 27.05 707.13 1920 37.77 61.21 56.66 52.32 23.05 24.00 73.05 198.96 152.43 27.26 706.72 1921 31.61 61.84 98.93 52.77 23.06 28.35 74.38 204.06 152.08 27.57 754.67 1922 4.64 62.46 110.76 53.20 23.07 29.04 75.75 206.75 151.74 27.79 745.21 1923 -4.40 63.07 120.34 53.62 23.08 29.56 77.06 209.23 151.80 28.00 751.36 1924 -13.63 63.67 128.38 54.03 23.09 29.97 78.40 211.59 151.87 28.18 755.56 1925 -24.35 64.26 135.36 54.42 23.09 30.30 79.78 213.85 151.96 28.35 757.02 1926 -31.00 64.84 137.31 54.08 31.70 30.49 81.19 216.03 147.46 28.57 760.69 1927 12.35 54.94 138.82 53.62 33.63 30.64 82.53 216.91 146.83 28.81 799.10 1928 12.14 53.34 139.92 53.05 35.36 30.77 83.10 217.75 146.53 29.05 801.01 1929 9.57 51.82 140.72 52.36 35.79 30.87 83.70 219.50 146.44 29.30 800.07 1930 10.10 50.36 141.71 51.56 36.12 30.97 84.30 221.61 146.47 29.54 802.74 1931 9.39 48.96 152.87 50.66 36.74 35.33 84.91 223.67 146.66 29.79 818.96 1932 3.30 47.60 155.90 49.66 37.31 36.02 85.52 224.57 146.89 30.04 816.79 1933 -3.41 46.28 158.25 48.56 37.82 36.55 86.15 225.41 147.15 30.28 813.04 1934 -10.67 44.99 160.11 47.36 38.30 36.96 84.55 219.96 147.42 30.53 799.51 1935 -13.05 43.72 161.58 46.08 38.75 37.30 82.80 219.82 147.70 30.78 795.48 1936 -21.47 42.48 163.19 44.76 39.18 37.49 80.90 219.75 165.10 31.02 802.40 1937 -48.02 41.25 164.94 43.40 39.59 37.65 78.84 219.74 169.48 31.26 778.14 1938 -47.47 40.04 166.51 42.01 39.98 37.78 76.69 219.78 172.75 31.50 779.57 1939 -51.34 38.85 167.93 40.59 40.35 37.89 74.51 219.77 175.29 31.73 775.58 1940 -64.28 37.66 169.25 39.15 40.71 37.99 71.14 219.78 177.32 31.96 760.68 1941 -65.71 36.49 167.94 37.69 41.03 53.04 54.42 219.81 182.27 32.19 759.17 1942 -53.28 36.55 167.43 36.23 41.35 55.30 47.51 231.91 187.87 32.41 783.28 1943 -67.75 36.61 167.05 34.77 41.65 56.99 40.83 244.60 193.64 32.62 781.03 1944 -72.05 36.68 166.82 33.31 41.89 58.30 34.35 257.72 199.43 32.84 789.29 1945 -80.33 36.75 166.60 31.86 42.13 59.36 28.03 271.16 205.19 33.04 793.78 1946 -85.19 36.82 169.44 30.40 42.35 59.93 24.03 284.86 281.30 33.24 877.19 1947 -85.09 36.70 172.36 28.96 42.56 60.38 20.42 286.95 302.11 33.44 898.78 1948 -85.68 36.57 175.47 27.52 42.77 60.75 17.18 288.69 318.01 33.63 914.90 1949 -90.58 36.45 178.72 26.08 42.97 61.06 14.30 290.24 329.78 33.82 922.85 1950 -91.05 36.32 183.85 24.66 43.16 61.33 13.08 290.11 340.01 34.00 935.47 1951 -98.33 36.18 240.86 23.53 34.40 82.95 126.91 289.82 349.78 67.51 1153.62 1952 -121.44 36.92 259.26 22.55 32.64 86.28 149.64 308.10 362.04 76.88 1212.86 1953 -146.05 36.72 274.17 21.71 30.83 88.76 171.48 327.04 322.62 84.52 1211.80 1954 -147.40 36.51 286.42 21.01 28.61 90.71 192.66 346.49 323.13 86.59 1264.72 1955 -154.86 36.29 296.73 20.44 26.39 92.29 213.74 366.35 326.78 87.92 1312.07 1956 -145.97 36.06 302.75 20.00 25.71 93.16 236.14 386.51 326.49 88.76 1369.61 1957 -149.14 35.83 307.67 19.68 25.04 93.86 258.25 388.58 326.34 89.26 1395.36 1958 -137.17 35.58 311.74 19.48 24.41 94.43 279.95 381.74 320.70 89.52 1420.39 1959 -151.13 35.32 316.92 19.40 23.79 94.92 208.34 362.12 320.51 89.62 1319.81 1960 -157.49 35.06 321.14 19.44 23.21 95.34 210.88 343.09 321.34 89.59 1301.58 1961 -168.85 34.78 430.33 16.70 22.64 129.92 205.22 323.08 325.96 89.48 1409.25 1962 -166.75 34.88 463.12 16.32 22.08 135.24 201.87 296.16 332.01 89.30 1424.24 1963 -176.59 35.00 488.88 16.01 21.55 139.22 198.82 285.60 347.12 89.09 1444.70 1964 -182.48 35.14 512.08 15.78 21.03 142.32 196.18 285.00 356.56 88.83 1470.44 1965 -187.89 35.30 531.33 15.61 20.52 144.85 192.92 284.29 365.27 88.56 1490.75 1966 -157.60 35.48 540.98 15.48 21.63 146.24 181.16 283.12 374.12 88.25 1528.86 1967 -159.69 35.54 548.95 15.39 21.82 147.36 169.52 282.17 382.93 87.94 1531.93 1968 -155.10 35.61 555.84 15.35 21.96 148.28 157.92 281.74 397.51 87.61 1546.72 1969 -149.39 35.69 561.86 15.33 21.73 149.06 147.83 281.22 407.46 87.04 1557.85 1970 -149.00 35.80 567.15 13.57 21.48 149.73 114.46 280.79 416.75 86.46 1537.19 1971 -185.54 35.91 513.34 11.18 21.52 184.52 100.09 280.65 407.73 50.23 1419.64 1972 -188.62 35.02 501.58 8.64 21.57 190.04 85.37 282.84 410.06 39.11 1385.61 1973 -191.31 35.23 492.50 5.96 21.62 194.18 71.25 284.69 474.68 29.74 1418.54 1974 -191.41 35.46 485.31 3.15 21.66 197.43 64.85 287.21 492.08 26.12 1421.88 1975 -186.54 35.72 479.49 0.21 21.71 200.09 58.78 291.29 505.73 23.24 1429.72 1976 -162.23 36.01 479.25 -2.64 21.75 201.60 55.92 303.45 619.65 20.85 1573.60 1977 -156.15 36.31 479.65 -5.64 21.78 202.82 50.36 306.37 655.90 18.78 1610.18 1978 -149.16 36.62 480.20 -8.79 21.81 203.84 44.82 285.35 682.44 16.94 1614.06 1979 -144.21 36.94 488.48 -12.08 21.84 233.70 39.49 248.06 703.56 15.26 1631.03 1980 -149.63 37.27 493.66 -14.09 21.85 238.69 35.44 209.52 721.19 13.69 1607.58 1981 -140.87 37.61 500.49 -15.34 17.00 256.24 33.41 168.78 837.55 15.58 1710.44 1982 -129.72 34.62 709.57 -16.39 16.56 271.25 30.72 122.86 868.29 14.94 1922.71 1983 -125.74 34.05 766.00 -17.23 16.44 276.66 28.82 101.47 888.24 14.13 1982.84 1984 -127.61 33.50 816.03 -17.88 18.04 280.35 27.16 93.77 902.20 12.75 2038.31 1985 -122.33 32.97 856.40 -18.34 19.80 283.31 25.77 82.73 894.82 11.29 2066.40 1986 -115.78 32.45 883.78 -18.62 20.37 285.47 23.35 76.79 913.97 9.77 2111.55 1987 -110.36 32.12 896.74 -18.72 21.02 287.05 22.57 70.97 922.46 8.22 2132.06 1988 -100.17 31.80 905.09 -18.65 21.72 288.38 21.85 64.83 929.25 6.65 2150.74 1989 -110.15 31.48 910.47 -18.42 22.47 289.50 21.18 66.60 934.81 5.29 2153.23 1990 -109.94 31.15 916.93 -18.08 23.24 290.47 20.11 61.10 939.19 3.92 2158.09 1991 -109.94 30.82 919.57 -18.08 23.24 291.32 20.11 50.89 1163.77 3.92 2375.61 1992 -109.94 30.23 791.53 -18.08 23.24 350.03 20.11 39.82 1108.93 3.92 2239.78 1993 -109.94 29.61 755.94 -18.08 23.24 359.17 20.11 39.52 1120.20 3.92 2223.69 1994 -109.94 28.98 726.80 -18.08 23.24 366.02 20.11 43.02 1118.17 3.92 2202.23 1995 -109.94 28.32 706.49 -18.08 23.24 371.38 20.11 31.08 1110.87 3.92 2167.38 1996 -109.94 27.64 686.19 -18.08 23.24 375.76 20.11 27.32 1100.22 3.92 2136.38 1997 -109.94 27.39 673.88 -18.08 23.24 378.20 20.11 21.09 1091.67 3.92 2111.47 1998 -109.94 27.13 662.72 -18.08 23.24 380.17 20.11 12.07 1085.11 3.92 2086.45 1999 -109.94 26.84 652.57 -18.08 23.24 381.81 20.11 5.03 1080.75 3.92 2066.25 2000 -109.94 26.54 643.33 -18.08 23.24 383.19 20.11 -12.92 1121.83 3.92 2081.22