Research News

Climate: Millennial Climate Oscillation Spied

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Science  12 Jan 1996:
Vol. 271, Issue 5246, pp. 146
DOI: 10.1126/science.271.5246.146

Summary

Climate records stored in sea-floor sediments and glacial ice show that Earth's climate oscillates from warmer to cooler and back every 2000 years or so. Researchers had detected this oscillation during the last ice age but suspected it might somehow be driven by the great ice sheets. Now they have learned that the cycle has continued since the ice age, up to the present day, implying that something else drives it—perhaps a slow variation of the sun.