Sudden shift in 'forcing' led to demise of Laurentide ice sheet

The massive Laurentide ice sheet that covered Canada during the last ice age initially began shrinking through calving of icebergs, and then abruptly shifted into a new regime where melting on the continent took precedence, ultimately leading to the sheet's demise. This is important, because it may provide a clue to how ice sheets on Greenland and Antarctica may respond to a warming climate.

from Oceanography News -- ScienceDaily http://ift.tt/1Ic4XNr
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