Antarctic Ice Melt Speeding Up – So Will Sea Level Rise

Ice in parts of the Antarctic Peninsula is now melting during the summer faster than at any time in the last thousand years, increasing 10 times in the past 600 years, with the most marked acceleration occurring since 1960, scientists say, reports Paul Brown at the Climate News Network. Study of layers in an ice core showed periods when summer snow on the ice cap thawed and then refroze.  By measuring the thickness of these melt layers the scientists were able to examine how the history of melting compared with changes in temperature at the ice core site over the last thousand years, which showed the overall and recent acceleration of melting. This new climate reconstruction clears up the debate on how Antarctica will react to global warming.  Their findings, published online in the journal Nature Geoscience, explains a series of unexpected sudden collapses of ice shelves over the last 20 years. This could lead to further large dramatic losses of ice from the peninsula, which in turn will add to sea level rise. 

 

Join the swelling numbers of voters TELLING Congress they’ll vote for Clean Energy candidates here: http://signon.org/sign/we-are-the-clean-99?source=c.em.cp&r_by=487176 . This is an ongoing campaign (the next Congressional election is in 2 years!) so please, spread the word. It’s our way of telling Congress that a strong clean energy voting bloc is out there. This is how YOU can make a difference.

 

For more on Climate Change, check out my weekly column at the HuffingtonPost, Climate Change This Week : http://www.huffingtonpost.com/author/index.php?author=mary-ellen-harte

 

Source

Antarctic Peninsula’s thaw speeds up April 14, 2013 The Antarctic Peninsula is now seeing a faster summer melting of ice in some areas than for a thousand years, British and French scientists have found, with the last 60 years seeing the fastest thaw. http://www.climatenewsnetwork.net/2013/04/antarctic-peninsulas-thaw-speeds-up/

 

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About melharte

Mel (Mary Ellen) Harte is a biologist (PhD) and climate change educator. She co-authored the free online book, COOL THE EARTH, SAVE THE ECONOMY, available at www.CoolTheEarth.US, and writes the CLIMATE CHANGE THIS WEEK column at the HuffingtonPost. Living summers in the alpine Rockies, she is on the frontlines of watching what climate change can do. Her diagnostic digital photographs of wildflowers have appeared in numerous publications.
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