Pliocene Climate Lessons

An ongoing reconstruction of a warmer Earth 3 million years ago helps test climate-change forecasts

Physics Climatology

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May-June 2011

Volume 99, Number 3
Page 228

DOI: 10.1511/2011.90.228

Over the course of geologic history, global temperatures have increased and decreased in response to a multitude of forces. Changes in the positions of continents, which can modify circulation in ocean basins and affect the global distribution of heat, have been a major cause of global climate change.

Photograph courtesy of W. S. Crawford and IODP.

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