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The Arctic's sea ice cover appears to have reached its minimum extent on September 17, 2014.
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Arctic sea ice reached its maximum extent for the year on March 21 at 14.91 million square kilometers.
A new study says year-to-year forecasts of the Arctic's summer ice extent are not yet reliable.
An NSIDC project that produced the earliest satellite maps of Arctic and Antarctic sea ice has been given the International Data Rescue Award in the Geosciences.
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