With both air and water getting warmer, the ice is melting from both above and below. In some parts of the Beaufort Sea6, north of Alaska and western Canada, ice that measured 3.3m thick at the beginning of the summer measured just 50 centimeters by seasons end.
The new measurements suggest that melting is far more severe than scientists have seen by just looking at ice cover from above, says Donald K. Perovich, a geophysicist at the U. S. Army Cold Regions Research and Engineering Laboratory in Hanover, N.H.7
Some scientists fear that the Arctic is stuck in a warming trend from which it may never recover.
词汇:
Arctic n.北极,北极圈;adj.北极的
the Arctic Ocean 北冰洋 shrink v.萎缩;缩小,减少 oceanographer n.海洋学家 skimpy adj.缺乏的,不足的 centimeter n.厘米 geophysicist n.地球物理学家
注释
1. fell to a record low: 跌到历史最低点。record 作形容词时,意思是空前的,创记 录的。Record low 的反义词是 record high: 历史最高点。
2. ice cover: 冰覆盖量
3. University of Washington: 华盛顿大学,创建于 l861 年,座落在美国华盛顿州西雅图 市东北角,所以又称西雅图华盛顿大学,是美国著名的公立研究型大学。
4. open water: 没有冰覆盖的海面
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