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Message: 1
From: National Science Foundation Update <nsf-update@xxxxxxx>
Date: Thu, 28 May 2009 07:38:09 -0500 (CDT)
Subject: Arctic Tundra May Contribute to Warmer World
Arctic Tundra May Contribute to Warmer World
A study published in the May 28 issue of the journal Nature has helped define the potentially significant contribution of permafrost thaw to atmospheric concentrations of carbon, which have already reached unprecedented levels.
"In earlier work we estimated that widespread permafrost thaw could potentially release 0.8-1.1 gigatons of carbon per year," said Ted Schuur an ecologist at the University of Florida and the lead author of the study. "Before this study, ...
This is an NSF News item.
Message: 2
From: National Science Foundation Update <nsf-update@xxxxxxx>
Date: Thu, 28 May 2009 17:11:24 -0500 (CDT)
Subject: Scientists Return from Expedition to Drill Beneath Frozen Russian Lake
Scientists Return from Expedition to Drill Beneath Frozen Russian Lake
A team of scientists from the United States, Germany, Russia and Austria has just returned from a six-month drilling expedition to a frozen lake in Siberia: Lake El'gygytgyn, "Lake E" for short.
Lake E was created 3.6 million years ago when a meteor more than a half-mile wide hit Earth and formed an 11-mile wide crater.
There, the researchers collected the longest sediment core samples retrieved in the Arctic region. Information contained in the cores, say the ...
This is an NSF News item.
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