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Arctic lake sediments show warming, unique ecological changes in recent decades
Date:10/20/2009

unded by the National Science Foundation, the Natural Sciences and Engineering Research Council of Canada and the Geological Society of America.

A study published in Science magazine last month that involved CU-Boulder researchers and reconstructed past temperatures in the Arctic using ice cores, tree rings and lake sediments concluded that recent warming around the Arctic is overriding a cooling trend caused by Earth's periodic wobble. Earth is now about 0.6 million miles further from the sun during the Northern Hemisphere summer solstice than it was in 1 B.C. -- a trend that has caused overall cooling in the Arctic until recently.


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Contact: Yarrow Axford
yarrow.axford@colorado.edu
303-492-7641
University of Colorado at Boulder
Source:Eurekalert  

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