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Paleo Slide Set: Polar Ice Cores
Methane Records
One of the major goals of paleoclimatologists is to extract climatic information from as many sites on the globe as possible. The more information we have about past climate, the clearer the picture gets. Since snow accumulates more slowly in Antarctica, records from Vostok do not have quite the temporal resolution of Greenland cores. As you can see from this graph, however, measurements of methane concentration from the GRIP (the European counterpart to GISP2) and Vostok cores agree very well in broad terms, illustrating large-scale climatic events such as the Younger Dryas cold event at ~11,000 yr B. P.

Photo Credits:
Thomas Andrews
NOAA Paleoclimatology Program
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Last Modified: 12 October 2001

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