The Arctic is locked into a destructive cycle that could see its icy cover rapidly disappear, scientists have confirmed.

科学家们已经证实，北极进入了一个恶性循环，冰盖也许将迅速消失。

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To determine how climate change alters this biogeochemical cycle in Arctic lakes, Drevnick's team analyzed sediment cores from nine lakes in the Canadian Arctic and in Svalbard, Norway.

要确定气候变化是如何改变北极湖泊的这种生物地球化学循环系统，德莱夫尼克的研究小组分析了来自加拿大北极地区和挪威斯瓦尔·巴德9个湖泊的沉积物岩心样本。

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The best hope lies in trying to identify the broader changes under way - for example with the retreat of the Arctic sea-ice or the cycle of warming in the Pacific Ocean with El Nino and La Nina.

BBC: Predicting the next big flood

"Seymour's work provided evidence with which to propose and eventually launch the Cryosat mission, which is now - as his last paper describes - providing the first observations of the annual cycle of sea-ice growth and decay throughout the Arctic Ocean, " Dr Giles said.

BBC: Cryosat spots Arctic sea-ice loss in autumn