Atmospheric carbon-dioxide concentrations for the period 11,500 to 9,600 radiocarbon years ago, reconstructed from stomatal density measurements on willow leaves in sediments at Lake Kråkenes, Norway. Individual measurements fall within the shaded area. The bold line is statistically smoothed.
Source: David J. Beerling, Hilary H. Birks, and Ian F. Woodward, "Rapid Late-Glacial Atmospheric CO2 Changes Reconstructed from the Stomatal Density Record of Fossil Leaves," Journal of Quaternary Science Vol. 10, no. 4 (1995) pp. 379-384.
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Last modified by pib on October 28, 2003.