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Published online 11 December 2006 | Nature | doi:10.1038/news061211-1

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Arctic clear for summer sailing by 2040

Models predict rapid decline of sea ice.

New climate simulations offer a dire forecast for the disappearance of Arctic sea ice, predicting that by the year 2040, the Arctic Ocean will be almost free of ice during late summer.

Some projections from climate centres worldwide have suggested previously that Arctic sea ice could vanish in September, at the end of the summer melt, by as early as 2050.

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