11 Sep '12, 3pm

How much ice has the Arctic lost? Enough to cover Canada

How much ice has the Arctic lost? Enough to cover Canada

A bit of good news: The extent of Arctic sea-ice melt may have reached its maximum for 2012. The record-setting melt isn’t good news itself, of course — just that it is near its bottom. In 2007, the previous record-low year, the lowest extent of 4.25 million square kilometers was reached on Sept. 24. The lowest point we’ve reached this year was last Friday, at 3.66 million sq. km. — 13.8 percent less than the previous record. (All data here is from the Japan Aerospace Exploration Agency .) Ice extent, as of yesterday. (Image via the University of Colorado.) A post at Climate Central raises an interesting question: What does this year’s ice-coverage loss compare to in surface area? The loss from the year’s high point (which came on March 17) has been massive — 10.77 million sq. km., a loss of 74.6 percent. Climate Central suggests that it’s equivalent to the area of Canada ...

Full article: http://grist.org/news/how-much-ice-has-the-arctic-lost-en...

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