14 May '11, 9am

The Fate of Greenland:lessons from Abrupt Climate Change #green

The Fate of Greenland:lessons from Abrupt Climate Change #green

and the work of Wallace Broecker receive close attention at this point in the book, particularly the current that carries warm water to the northern reaches of the Atlantic before cooling and sinking to flow south.. It’s a fascinatingly complex picture, which includes the evidence from North Atlantic deep-sea sediment of periodic large North Atlantic armadas of melting icebergs likely to have originated in the collapse of a Canadian ice sheet. Such an ice armada may have been the trigger for the Younger Dryas. The jolts of surface fresh water in the North Atlantic are thought to have caused stops in the ocean conveyor with subsequent spontaneous restarts provided by the heat stored up in the deep sea. Other mechanisms are also proposed to account for stoppages, though the book acknowledges that much remains to be learned about the underlying physics of the stops and starts...

Full article: http://www.celsias.com/article/fate-greenlandlessons-abru...

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