************************************************************************* *** Historical CO2 Record from the Siple Station Ice Core *** *** September 1994 *** *** *** Source: A. Neftel *** *** H. Friedli *** *** E. Moor *** *** H. Lotscher *** *** H. Oeschger *** *** U. Siegenthaler *** *** B. Stauffer *** *** Physics Institute *** *** University of Bern *** *** CH-3012 Bern, Switzerland *** *** *Data in the first table were published in Neftel et al. (1985); data in the second *table were published by Friedli et al. (1986). * *CO2 concentrations are expressed in parts per million by volume. ************************************************************************* **Table 1 deleted to make data input easier. Column headers on **Table 2 edited to make reading easier. **Units: Depth is mean depth in meters. GasDate is in yr AD. CO2 is in ppmv. ************************************************************************* Depth GasDate CO2 187.70 1744 276.8 177.50 1764 276.7 168.30 1791 279.7 154.89 1816 283.8 142.75 1839 283.1 140.75 1843 287.4 138.20 1847 286.8 134.47 1854 288.2 126.80 1869 289.3 123.80 1874 289.5 121.80 1878 290.3 116.82 1887 292.3 110.20 1899 295.8 108.80 1903 294.8 107.20 1905 296.9 105.25 1909 299.2 101.80 1915 300.5 98.80 1921 301.6 95.17 1927 305.5 90.77 1935 306.6 86.80 1943 307.9 81.22 1953 312.7