State of the Climate in 2011: Highlights

Each year, following months of number crunching and fact-checking, several hundred climate and earth scientists contribute to a global-scale evaluation of climate and environmental conditions over the previous year.

This analysis—our planet's annual check up—is known as the State of the Climate report. Highlights of the State of the Climate in 2011 report include wild weather extremes, a double-dip La Niña, the first-ever Arctic ozone hole, and continued evidence of long-term climate warming.

The full State of the Climate in 2011 report is available as a pdf from the National Climatic Data Center.

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Reviewer: 
Deke Arndt
Jessica Blunden
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