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Proxy Methods

Proxy measures are measurements of physical, chemical, or biological processes that depend on the weather, and therefore provide an indication of past climates.

Researcher works with a drill that extracts ice cores from glaciers during the 2003 Antarctic Megadunes expedition.

Ted Scambos & Rob Bauer, NSIDC

Boreholes

Corals

Glacial Extent

Ice Cores

Isotopes

Paleomagnetism

Tree Rings

  • The Past Million Years Featured Article The Past Million Years The Past Million Years

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