This past winter's negative phase of the Arctic Oscillation transported old ice (four, five, and more years old) from an area north of the Canadian Archipelago.

去年冬天北极这种负向振荡从加拿大群岛北部地区运来多年老海冰(四，五年或更多年的老海冰)。

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At the same time, warm Pacific Ocean water is pulsing through the Bering Strait into the Arctic basin, helping melt a large area of sea ice between Alaska and eastern Siberia.

同时，温暖的太平洋的海水正在漫过白令海峡涌向北冰洋流域，这使阿拉斯加和东西伯利亚间的海冰融化得更多。

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For the past three years, the vast cap of shining-white ice covering the Arctic has melted away in summer to an area that would have been unbelievable just a decade ago.

过去三年内，在北极地区白皑皑冰盖已经在夏季大量地消减。

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The Arctic sea ice area is expected to continue decreasing until September.

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And in February 2009 it was discovered that scientists had previously been underestimating the re-growth of Arctic sea ice by an area larger than the state of California (twice as large as New Zealand).

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Compared to September conditions in the 1980s and 1990s, this represents a 45 percent reduction in the area of the Arctic covered by sea ice.

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