Global Warming Mapped

The average global temperature has increased by about 0.8°Celsius since 1880, and two-thirds of the warming occurred after 1975.

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NASA images by Robert Simmon, based on data from the Goddard Institute for Space Studies. Caption by Michael Carlowicz.

Published December 10, 2010
Data acquired January 1, 2000 - December 31, 2009

Source:

In situ Measurement