An ice island with an area of 100 square miles has broken off from one of Greenland's two main glaciers in what scientists say is the biggest such event in the Arctic in nearly 50 years.

一块面积达到100平方英里的浮冰岛已经从格陵兰两大冰川之一崩离，用科学家的话来说，这块浮冰岛的崩落是近50年北极同类事件中最大的一个。

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Proof of warming is widespread across Russia. Glaciers and Arctic sea ice have dwindled, and as many as 385, 000 square miles of Siberian tundra are thawing.

变暖的证据遍布俄罗斯，冰川和北冰洋的冰雪面积开始缩减，面积多达三十八万五千平方英里的西伯利亚冻土带正在融化。

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Arctic temperatures have increased at almost twice the global average rate in the last 100 years; 70,000 square kilometres of sea ice (an area about the size of Ireland) is disappearing annually.

北极的温度上升率在过去的100年中比全球温度的上升率高出了一倍，每年都有7万平方公里的冰海消失，而这一面积相当于整个爱尔兰的面积。

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The scientists say the average Arctic sea ice extent last month was about five million square kilometers.

VOA: special.2009.10.27

They also assert that, as a member, America could itself lay claim to some 600 square miles of additional Arctic seabeds.

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Earlier this month NSICD scientists reported that winter sea ice cover in the Arctic was just 14.7 million square kilometers (5.7m square miles) -- slightly better than the all-time low 14.5m square kilometers (5.6m square miles) in 2006 -- but well short of the 15.7m average for 1979-2000.

CNN: Arctic melt worse than predictions

The extent of Arctic sea ice extent fell to 4.10 million square kilometers on August 26, 2012.

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