Houghton, R. A., and J. L. Hackler. 2001. Carbon Flux to the Atmosphere from Land-Use Changes: 1850 to 1990. ORNL/CDIAC-131, NDP-050/R1. Carbon Dioxide Information Analysis Center, U.S. Department of Energy, Oak Ridge National Laboratory, Oak Ridge, Tennessee, U.S.A.

APPENDIX E: FULL LISTING OF COMPARE.DAT (FILE 4)

The following is a full listing of ascii file compare.dat (File 4), which is also provided, in binary spreadsheet format, as file compare.wk1 (File 5). This file compares the estimated global total net flux of carbon to the atmosphere from land-use change, from 1850 to 1990, by year, for this database (Houghton 1999) and three earlier publications (Houghton et al. 1983, Houghton and Skole 1990, and Houghton and Hackler 1995). Note that the data for the period 1850 through 1859 attributed below to Houghton et al. (1983) were not actually presented in that publication but are present in the data used in that publication.

Units = Pg of carbon (1 petagram = 1015 grams); -9.999 denotes missing value 

Year      Houghton          Houghton           Houghton    Houghton
       et al. 1983      & Skole 1990     & Hackler 1995        1999

1850         0.458             0.278              0.352       0.397
1851         0.464             0.319              0.383       0.397
1852         0.469             0.353              0.397       0.400
1853         0.475             0.379              0.408       0.404
1854         0.480             0.393              0.417       0.407
1855         0.486             0.424              0.424       0.410
1856         0.492             0.439              0.430       0.413
1857         0.497             0.452              0.435       0.416
1858         0.503             0.464              0.439       0.419
1859         0.509             0.475              0.443       0.422
1860         0.539             0.492              0.446       0.423
1861         0.563             0.485              0.457       0.427
1862         0.587             0.492              0.463       0.421
1863         0.612             0.500              0.468       0.423
1864         0.623             0.508              0.474       0.424
1865         0.634             0.516              0.479       0.426
1866         0.641             0.522              0.481       0.427
1867         0.649             0.528              0.484       0.427
1868         0.656             0.534              0.486       0.428
1869         0.665             0.541              0.489       0.429
1870         0.684             0.544              0.492       0.433
1871         0.701             0.553              0.501       0.461
1872         0.717             0.562              0.507       0.471
1873         0.731             0.566              0.512       0.479
1874         0.744             0.572              0.513       0.483
1875         0.771             0.579              0.517       0.488
1876         0.792             0.585              0.521       0.491
1877         0.813             0.589              0.524       0.493
1878         0.834             0.592              0.526       0.495
1879         0.846             0.594              0.528       0.496
1880         0.857             0.621              0.529       0.497
1881         0.868             0.639              0.560       0.535
1882         0.878             0.658              0.569       0.546
1883         0.888             0.669              0.576       0.556
1884         0.897             0.679              0.582       0.564
1885         0.905             0.686              0.586       0.572
1886         0.910             0.692              0.590       0.577
1887         0.915             0.696              0.592       0.579
1888         0.919             0.700              0.593       0.581
1889         0.923             0.702              0.594       0.583
1890         0.936             0.701              0.593       0.584
1891         0.944             0.694              0.597       0.584
1892         0.951             0.688              0.597       0.583
1893         0.959             0.683              0.597       0.581
1894         0.966             0.679              0.597       0.579
1895         0.973             0.676              0.597       0.577
1896         0.979             0.673              0.597       0.578
1897         0.985             0.672              0.596       0.579
1898         0.991             0.674              0.596       0.580
1899         0.997             0.676              0.595       0.582
1900         1.027             0.732              0.596       0.583
1901         1.048             0.765              0.660       0.655
1902         1.070             0.791              0.678       0.678
1903         1.092             0.811              0.693       0.697
1904         1.100             0.828              0.705       0.713
1905         1.108             0.844              0.716       0.728
1906         1.113             0.851              0.726       0.741
1907         1.117             0.856              0.731       0.748
1908         1.122             0.860              0.735       0.753
1909         1.126             0.862              0.738       0.757
1910         1.133             0.815              0.740       0.760
1911         1.138             0.788              0.686       0.704
1912         1.143             0.762              0.670       0.687
1913         1.153             0.762              0.646       0.658
1914         1.158             0.758              0.639       0.648
1915         1.164             0.750              0.630       0.636
1916         1.167             0.750              0.634       0.640
1917         1.170             0.749              0.635       0.639
1918         1.173             0.750              0.637       0.639
1919         1.175             0.751              0.639       0.639
1920         1.177             0.789              0.641       0.637
1921         1.179             0.808              0.691       0.682
1922         1.181             0.823              0.707       0.695
1923         1.182             0.836              0.722       0.706
1924         1.184             0.842              0.734       0.715
1925         1.281             0.866              0.745       0.723
1926         1.360             0.875              0.753       0.730
1927         1.441             0.883              0.755       0.733
1928         1.507             0.866              0.757       0.736
1929         1.527             0.844              0.736       0.711
1930         1.548             0.856              0.730       0.707
1931         1.569             0.861              0.740       0.723
1932         1.591             0.862              0.737       0.723
1933         1.614             0.860              0.732       0.722
1934         1.637             0.857              0.730       0.722
1935         1.660             0.852              0.724       0.719
1936         1.683             0.850              0.729       0.730
1937         1.705             0.849              0.727       0.728
1938         1.717             0.849              0.719       0.725
1939         1.736             0.850              0.715       0.721
1940         1.756             0.839              0.707       0.714
1941         1.773             0.810              0.702       0.720
1942         1.791             0.808              0.695       0.719
1943         1.808             0.808              0.688       0.717
1944         1.832             0.812              0.685       0.719
1945         1.856             0.820              0.682       0.720
1946         1.880             0.830              0.736       0.793
1947         1.904             0.844              0.751       0.811
1948         1.927             0.861              0.761       0.825
1949         1.950             0.878              0.767       0.834
1950         2.101             0.990              0.774       0.846
1951         2.186             1.150              0.986       1.064
1952         2.265             1.234              1.037       1.125
1953         2.340             1.294              1.045       1.128
1954         2.360             1.418              1.068       1.161
1955         2.374             1.482              1.109       1.214
1956         2.390             1.528              1.128       1.246
1957         2.405             1.478              1.146       1.275
1958         2.417             1.483              1.156       1.297
1959         2.429             1.488              1.084       1.232
1960         2.437             1.573              1.084       1.241
1961         2.447             1.625              1.217       1.387
1962         2.455             1.663              1.255       1.431
1963         2.463             1.700              1.293       1.476
1964         2.469             1.735              1.322       1.512
1965         2.562             1.768              1.348       1.542
1966         2.632             1.747              1.355       1.551
1967         2.700             1.758              1.360       1.559
1968         2.768             1.775              1.368       1.570
1969         2.776             1.783              1.377       1.582
1970         2.721             1.684              1.357       1.564
1971         2.699             1.669              1.250       1.438
1972         2.677             1.632              1.215       1.394
1973         2.655             1.609              1.232       1.416
1974         2.653             1.567              1.233       1.406
1975         2.650             1.595              1.234       1.394
1976         2.646             1.611              1.324       1.497
1977         2.640             1.631              1.350       1.519
1978         2.633             1.616              1.367       1.533
1979         2.624             1.609              1.413       1.577
1980         2.613             1.608              1.423       1.595
1981        -9.999             1.608              1.420       1.870
1982        -9.999             1.608              1.450       1.929
1983        -9.999             1.608              1.470       1.973
1984        -9.999             1.608              1.519       2.041
1985        -9.999             1.608              1.539       2.079
1986        -9.999            -9.999              1.574       2.150
1987        -9.999            -9.999              1.605       2.163
1988        -9.999            -9.999              1.619       2.185
1989        -9.999            -9.999              1.611       2.187
1990        -9.999            -9.999              1.614       2.103