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Best hope for saving Arctic sea ice is cutting soot emissions, says Stanford researcher
Date:7/28/2010

nlight can hit the black carbon on its way towards Earth, and also hit it as light reflects off the ice and heads back towards space.

"It's a double-whammy over the ice surface in terms of heating the air," Jacobson said.

Black carbon also lands on the snow, darkening the surface and enhancing melting.

"There is a big concern that if the Arctic melts, it will be a tipping point for the Earth's climate because the reflective sea ice will be replaced by a much darker, heat absorbing, ocean below," said Jacobson. "Once the sea ice is gone, it is really hard to regenerate because there is not an efficient mechanism to cool the ocean down in the short term."


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Contact: Louis Bergeron
louisb3@stanford.edu
650-725-1944
Stanford University
Source:Eurekalert

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