A shift in climate ‘forcing’ led to demise of Laurentide ice sheet 9000 years ago

Watts Up With That?

I wonder what caused a shift in ‘radiative forcing’ 9,000 years ago? Good thing that it happened though, or we would likely not have the civilization we have today.

Sudden shift in ‘forcing’ led to demise of Laurentide ice sheet

A study of the demise of the Laurentide Ice Sheet that once covered Canada may help scientists better understand shrinking ice fields today -- like this melting ice margin in Greenland. CREDIT Courtesy of Oregon State University A study of the demise of the Laurentide Ice Sheet that once covered Canada may help scientists better understand shrinking ice fields today — like this melting ice margin in Greenland. CREDIT Courtesy of Oregon State University

From OREGON STATE UNIVERSITY:

CORVALLIS, Ore. — A new study has found that 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.

Researchers say a shift in ‘radiative forcing’ began prior to 9,000 years ago and kicked the deglaciation into overdrive. The…

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