Friday, July 29, 2011

Consensus?: "we may have got it all wrong" on ice sheet melting; Greenland's ice may be more stable than Antarctica's, which is "scary"; ice cube melts in a cup of warm water

Antarctica's Ice Less Stable Than Greenland's; New Study Predicts 'Scary' Collapse Anytime - International Business Times
Melting ice sheets of Greenland have been a cause of concern for researchers and climate change proponents, as previous studies on the ice sheet behavior projected Greenland's ice less stable compared to Antarctica's ice. But a recent study by scientists from the University of Wisconsin-Madison, suggests that we may have got it all wrong.
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New results published by geoscience assistant professor Anders Carlson and his team in the July 29 edition of "Science," are revealing surprising patterns of melting during the last interglacial period that suggest that Greenland's ice may be more stable and Antarctica's less stable, contrary to what many thought.
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"The implication of our results is that West Antarctica likely was much smaller than it is today," and responsible for much more of the sea level rise than many scientists have thought, Carlson, a member of the Center for Climatic Research in the Nelson Institute for Environmental Studies, says. "If West Antarctica collapsed, that means it's more unstable than we expected, which is quite scary," as the temperatures during the last interglacial period were similar to those expected by the end of this century.
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"Ocean warming is very important compared to atmospheric warming because water has a much larger heat capacity than air," lead researcher, Jianjun Yin explained. "If you put an ice cube in a warm room, it will melt in several hours. But if you put an ice cube in a cup of warm water, it will disappear in just minutes."
Flashback: Antarctic Ice Growing, Not Shrinking - Science News - FOXNews.com
Ice is expanding in much of Antarctica, contrary to the widespread public belief that global warming is melting the continental ice cap.

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