In summer, some of the sea ice becomes water.

夏天里部分海冰会融化成水。

youdao

Is this the end of Arctic summertime sea ice?

北极夏季海冰即将消失了吗？

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In winter, it is completely covered with sea ice.

在冬天，它完全被海冰覆盖。

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One of the scientists says the past six years have shown the lowest Arctic sea ice cover ever measured.

VOA: special.2009.05.05

The center says September Arctic sea ice is decreasing at a rate of more than eleven percent every ten years.

VOA: special.2009.10.27

He says a warmer Arctic and thinner sea ice changes the balance between the normally cold Arctic and warmer areas.

VOA: special.2009.05.05

The effect of diminishing sea ice isn't limited to increasing atmospheric greenhouse gas concentrations.

CNN: Next global warming worry: Thawing tundra

She had travelled to the Arctic and the Antarctic to study the sea ice.

BBC: Katharine Giles

Change (IPCC) in 2007 underestimated the rates of change now observed in sea ice.

FORBES: NASA-Funded Group Doctors Sea Level Data