Winter ice cover may herald higher melt
Multiyear ice being flushed from the Arctic Ocean in the winter is not being replaced fast enough to prevent summer ice loss
The opening of the Northwest Passage in the past couple of years has provided dramatic evidence of the reduction in Arctic sea ice coverage, with the sea ice minimum extent reaching a record low level in the summer of 2007, and almost dropping to the same level in the following summer.
And at the en....
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5.85 million square miles
Arctic warming from aerosol particles
Sulfates, black carbon
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