2011-02-12 Mainly due to climate warming, the Arctic sea ice hit record low in January this year, the U. S. National Snow and ice Data Center (NSIDC) said.

2011年02月12日美国国家冰雪数据研究中心近日发布研究报告称，受气候变暖影响，今年1月的北极海冰面积缩减至历史同期最低水平。

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This technique has been developed in a joint study between the China's National Climate Center and the United States' National Climatic Data Center.

这一方法是在中国国家气候中心与美国国家气候资料中心的双边合作研究中得以实现的。

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These partners include the University of Maryland, Penn State, Georgia Tech, the National Climate Data Center and the U.S. Department of Agriculture.

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The National Climate Data Center announced this week that 2012 was the hottest year on record, crushing the previous hottest year, 1998, by a full degree.

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In its report issued Thursday, the climate data center said the average U.S. temperature between March and May was 57.1 degrees, 5.2 degrees above the long-term average from 1901 to 2000.

CNN: STORY HIGHLIGHTS