Abstract
WE would like to point out some inaccuracies in a report by Budd, Jenssen and Radok1. First, the central idea in the articles by Dansgaard and Johnsen2 was to point out that agreement between the measured and calculated temperature profiles at Camp Century, Greenland, could be obtained without assuming “a little more than half that currently observed”. They used the appropriate value of 0.35 m of ice per year (ref. 3) for all the calculations4. Furthermore, Budd, Jenssen and Radok quote Langway5 as performing an isotope analysis for “an earlier Camp Century core”, whereas in fact this analysis was performed on a core from Site 2, Greenland. Finally, their extrapolation of the measured temperature profile to the surface is only one of many possible solutions to the problem. It implies a shift to higher temperatures rather than a more appropriate oscillating surface temperature6 and is therefore hardly valid.
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References
Budd, W. F., Jenssen, D., and Radok, U., Nature Physical Science, 232, 84 (1971).
Dansgaard, W., and Johnsen, S. J., J. Geophys. Res., 74, 1109 (1969). ibid., 74, 2795 (1969).
Crozaz, G., and Langway, C. C., Earth Planet. Sci. Lett., 1, 194 (1966).
Dansgaard, W., and Johnsen, S. J., J. Glaciol., 8, 215 (1969).
Langway, C. C., US Army Cold Regions Research and Engineering Laboratory Res. Rep., No. 77 (1967).
Johnsen, S. J., Dansgaard, W., Clausen, H. B., and Langway, C. C., Nature, 227, 482 (1970).
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DANSGAARD, W., JOHNSEN, S. & LANGWAY, C. Reinterpretation of Deep Ice Temperatures. Nature Physical Science 233, 40 (1971). https://doi.org/10.1038/physci233040a0
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DOI: https://doi.org/10.1038/physci233040a0