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Published: January 8, 2013 print this article Print save this article Save email this article Email ENLARGE TEXT increase font decrease font

U.S. roasts to hottest year on record in 2012



WASHINGTON — America set an off-the-charts heat record in 2012.
A brutal combination of a widespread drought and a mostly absent winter pushed the average annual U.S. temperature last year up to 55.32 degrees Fahrenheit, the government announced today. That’s a full degree warmer than the old record set in 1998.
Breaking temperature records by an entire degree is unprecedented, scientists say. Normally, records are broken by a tenth of a degree or so.
The National Climatic Data Center’s figures for the entire world won’t come out until next week, but through the first 11 months of 2012, the world was on pace to have its eighth warmest year on record.
Scientists say the U.S. heat is part global warming in action and natural weather variations. The drought that struck almost two-thirds of the nation and a La Nina weather event helped push temperatures higher, along with climate change from man-made greenhouse gas emissions, said Katharine Hayhoe, director of the Climate Science Center at Texas Tech University. She said temperature increases are happening faster than scientists predicted.
Last year was 3.2 degrees warmer than the average for the entire 20th century. Last July was the also the hottest month on record.
“A picture is emerging of a world with more extreme heat,” said Andrew Dessler, a Texas A&M University climate scientist. “Not every year will be hot, but when heat waves do occur, the heat will be more extreme. People need to begin to prepare for that future.”





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