2011-01-09 14:48:18New paper: Tipping Point for the Greenland Ice Sheet
Daniel Bailey
Daniel Bailey
yooper49855@hotmail...
68.188.192.170

Saw this originally posted in New Scientist (http://www.newscientist.com/article/mg20927942.200-last-chance-to-hold-greenland-back-from-tipping-point.html), then a commenter at Neven's blog provided a link to a free copy of the study (at bottom).

The money quotes:

"Once an ice sheet starts to have continuously negative surface mass balance, the ice surface gradually decreases in altitude and become warmer, leading to more melting in a positive feedback effect."

"As the temperature increase in the Arctic, including Greenland, on average, probably will continue to be twice the global average rate, there is a reason to expect that the tipping point may be reached at a global average temperature increase of approximately 0.6°C. "

Non-Paywalled (free) copy available: http://infolink2003.elbo.dk/Naturvidenskab/dokumenter/doc/8749.pdf

Nice.

 

2011-01-09 16:33:20Update
Daniel Bailey
Daniel Bailey
yooper49855@hotmail...
68.188.192.170

Artful Dodger over at Neven's blog was kind enough to provide a link to the full (PDF) of the study:

http://permalink.lanl.gov/object/tr?what=info:lanl-repo/lareport/LA-UR-09-06177