Snow cover extent declines in the Arctic

9. januar 2013

NASA’s Earth Observatory.

In the high latitudes of the Northern Hemisphere, snow typically covers the land surface for nine months each year. The snow serves as a reservoir of water, and a reflector of the Sun’s energy, but recent decades have witnessed significant changes in snow cover extent. Studies of snow cover published in Geophysical Research Letters and the Arctic Report Card: Update for 2012 found that, between 1979 and 2012, June snow cover extent decreased by 17.6 percent per decade compared to the 1979–2000 average.

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