Observing & Predicting

Never in the historical record have such large areas of the country experienced such radically different temperature extremes as they have so far in 2014.

Thursday, July 1, 2010

  • This report presents a comprehensive appraisal of Earth’s climate in 2009, and establishes the last decade as the warmest on record. Reduced extent of Arctic sea ice, glacier volume, and snow cover reflect the effects of rising global temperature.