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
Figures indicate an average ice thickness of 1.15-3.75m, much of which might be expected to melt between June and September.
BBC: Arctic team gives up on ice radar
That the climate suddenly cooled then, plunging the Northern Hemisphere back into an ice age for 1, 300 years, is not in doubt.
WSJ: Matt Ridley on New Support for a Global-Cooling Theory | Mind & Matter
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