The Arctic sea ice holds a central position in the Earth's climate system and it's deteriorating faster than expected.

北极海冰在地球气候系统中占据中心位置，并且它恶化的速度比预期的更快。

youdao

Arctic sea ice usually melts in spring and summer, then grows in winter.

北极的海冰通常在春天和夏天融化，然后在冬天形成。

youdao

Arctic Sea Ice News and Analysis.

北极海冰近况与分析。

youdao

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

The amount of ice cover and its thickness are two measures of the health of the Arctic Sea.

VOA: special.2009.05.05

The analysis produced a summer Arctic sea-ice minimum extent of 6.9 million sq km.

BBC: Earliest satellite maps of Antarctic and Arctic sea-ice

Arctic sea ice is usually 1 to 3 meters, or as much as 9 feet thick.

CNN: Polar bears resort to cannibalism as Arctic ice shrinks

And retreating Arctic sea ice provides even more visible data to support conclusions of warming.

ECONOMIST: Leaked e-mails do not show climate scientists at their best