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Average near surface temperatures of the northern hemisphere during the past 11000 years (Dansgaard et al., 1969; Schonwiese 1995).

One Thousand Centuries of Climatic Record from Camp Century on the Greenland Ice Sheet

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DOI http://dx.doi.org/10.1126/science.166.3903.377

Abstract

A correlation of time with depth has been evaluated for the Camp Century, Greenland, 1390 meter deep ice core. Oxygen isotopes in approximately 1600 samples throughout the core have been analyzed. Long-term variations in the isotopic composition of the ice reflect the climatic changes during the past nearly 100,000 years. Climatic oscillations with periods of 120, 940, and 13,000 years are observed.

W. Dansgaard et al. ,One Thousand Centuries of Climatic Record from Camp Century on the Greenland Ice Sheet. Science166, 377-381 (1969). DOI: 10.1126/science.166.3903.377

Average near surface temperatures of the northern hemisphere during the past 11000 years (Dansgaard et al., 1969; Schonwiese 1995).