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Author Topic: 20k yrs ago warming in West Antarctica matches the onset of warming in the North  (Read 1886 times)

prokaryotes

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West Antarctica Warmed Quickly ... 20,000 Years Ago
Quote
"West Antarctica is influenced by the ocean much more than the ice up high in East Antarctica, so you are able to see this [warming] happening before you notice it in East Antarctica," Fudge said. "We're seeing something similar in the modern climate, where West Antarctica seems to be changing more quickly."

The findings also resolve a long-standing problem: The timing of polar melting when the ice age ended. Based on earlier ice core records, mainly from East Antarctica, researchers had thought Antarctica warmed up 18,000 years ago, about 2,000 years after the Northern Hemisphere had warmed. Climate modelers sought to explain the delay through shutdowns in ocean currents (which help carry heat across the globe), among other factors.

Now, the warming in West Antarctica matches the onset of warming in the Northern Hemisphere, also pegged at 20,000 years ago.
http://www.livescience.com/38882-west-antarctica-thawed-earlier.html

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