北极的“老冰”正在消失

Arctic’s “Old Ice” disappearing

In the Arctic Ocean, some ice stays frozen year-round, lasting for many years before melting. But this winter, the region hit a record low for ice older than five years.

在北冰洋，一些冰全年都是冰冻的，持续很多年才融化。但今年冬天，该地区的冰龄超过五年的“老冰”数量创历史新低。

This, along with a near-record low for sea ice over all, supports predictions that by midcentury there will be no more ice in the Arctic Ocean in summer.

这一数据，加上海冰总量接近历史最低水平的有关数据，支持了到本世纪中叶北冰洋夏季将不再有冰的预测。

Read more at NY Times

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