Polar Vortex Revenge? US Heat Waves Melted Greenland’s Ice

www.livescience.com By Becky Oskin, Senior Writer   |   April 25, 2014 01:50pm ET

In a reversal of this year’s extraordinary winter weather, Greenland suffered the wrath of North America’s epic heat waves in 1889 and 2012, a new study reveals.

“Last winter in the eastern United States, people associated the cold with the behavior of the polar vortex,” said lead study author William Neff, a fellow at the Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado, Boulder. “In fact the polar vortex can show two faces: a cold one or a warm one depending where you are. Last winter it showed its cold face to folks in the East. In the summer of 2012 it showed its warm face.” [Video: 2 Extreme Melt Events 123 Years Apart]  Click here to view the outstanding video.  Click here to read more.

http://www.livescience.com/45130-2-extreme-melt-events-123-years-apart-data-animation.html

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