Last year was the warmest in the continental United States in the past 112 years -- capping a nine-year warming streak unprecedented in the historical record" that was driven in part by the burning of fossil fuels, the government reported yesterday. According to the government's National Climatic Data Center, the record-breaking warmth -- which caused daffodils and cherry trees to bloom throughout the East on New Year's Day -- was the result of both unusual regional weather patterns and the long-term effects of the buildup of carbon dioxide in the atmosphere. The center said there are indications that the rate at which global temperatures are rising is speeding up. Average temperatures nationwide in 2006 were 2.2 degrees Fahrenheit higher than the mean temperatures nationwide for the 20th century. Climate experts generally do not make much of temperature fluctuations over one or two years, but ... the record 2006 temperatures were part of a long and worrisome trend. For instance, NOAA said, the past nine years have all been among the 25 warmest years on record for the continental United States. Brenda Ekwurzel, a climate scientist with the Union of Concerned Scientists [said] "when you look at temperatures across the globe, every single year since 1993 has been in the top 20 warmest years on record." Globally, 2005 was the hottest year on record ... and 2006 was slightly cooler.

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