News From the Field
Greenland Ice May Exaggerate Magnitude of 13,000-year-old Deep Freeze
June 25, 2012
Ice samples pulled from nearly a mile below the surface of Greenland glaciers have long served as a historical thermometer, adding temperature data to studies of the local conditions up to the Northern Hemisphere's climate. But the method--comparing the ratio of oxygen isotopes buried as snow fell over millennia--may not be such a straightforward indicator of air temperature.
University of Wisconsin-Madison
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