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Re: New Study May Answer Questions About Enigmatic Little Ice Age

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avatar New Study May Answer Questions About Enigmatic Little Ice Age
January 30, 2012 01:57PM
ScienceDaily (Jan. 30, 2012) — A new University of Colorado Boulder-led study appears to answer contentious questions about the onset and cause of Earth's Little Ice Age, a period of cooling temperatures that began after the Middle Ages and lasted into the late 19th century. According to the new study, the Little Ice Age began abruptly between A.D. 1275 and 1300, triggered by repeated, explosive volcanism and sustained by a self-perpetuating sea ice-ocean feedback system in the North Atlantic Ocean, according to CU-Boulder Professor Gifford Miller, who led the study. The primary evidence comes from radiocarbon dates from dead vegetation emerging from rapidly melting icecaps on Baffin Island in the Canadian Arctic, combined with ice and sediment core data from the poles and Iceland and from sea ice climate model simulations, said Miller.

http://www.sciencedaily.com/releases/2012/01/120130131503.htm
avatar Re: New Study May Answer Questions About Enigmatic Little Ice Age
January 30, 2012 02:22PM
So I guess the gist of this story is that just some properly spaced massive volcanic explosions could plunge the earth back into a mini ice age as it they did during the late 13th century.
avatar Re: New Study May Answer Questions About Enigmatic Little Ice Age
January 30, 2012 02:55PM
Quote
plawrence
So I guess the gist of this story is that just some properly spaced massive volcanic explosions could plunge the earth back into a mini ice age as it they did during the late 13th century.

That might be harder to do now with the current CO2 levels.
avatar Re: New Study May Answer Questions About Enigmatic Little Ice Age
January 30, 2012 03:02PM
Maybe it would require just a few additional volcanic explosions to counteract the increased CO2 levels.

And that could be these scientists next scientific endeavor: calculate through computer modeling how many volcanic explosions (of the type witnessed during the late 13th Century) would be required to plunge the earth back into a mini ice age.
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