Ice age data show that back in the 1970s and 1980s, old ice drifting into the Beaufort sea would generally survive the summer melt season.

冰川时期的数据表明，早在20世纪70年代和80年代，老海冰一旦流入波弗特海，一般就能安然渡过当年夏天的冰融季节。

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Recently, scientists from NASA and the National Snow and Ice Data Center described another way Arctic sea ice is changing: the summer melt season is getting significantly longer.

最近，美国国家航空航天局（NASA）以及国家冰雪数据中心(NSIDC)的科学家从另一个角度描述了北冰洋海冰的这种变化，即（该地区）夏季融冰期正在显著的变长。

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In the winter of 2010, Jakobshavn's ice front did not re-advance as it usually does, so it began the 2010 melt season in the same location as the 2009 summer melt season.

2010年冬天，雅各布港冰川的前沿并没有像往常一样重新前进，于是2010年融水季节是在2009年夏季融水季节结束的同一地点开始的。

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