Ice-core evidence of abrupt climate changes.

Alley, R B · Proc Natl Acad Sci U S A · 2000

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Abstract

Ice-core records show that climate changes in the past have been large, rapid, and synchronous over broad areas extending into low latitudes, with less variability over historical times. These ice-core records come from high mountain glaciers and the polar regions, including small ice caps and the large ice sheets of Greenland and Antarctica.