The giant polar ice sheets in Greenland and Antarctica are losing three times as much ice as 20 years ago, adding to the rising sea level that threatens low-lying coastal areas, says a new study published in the journal Science, and hailed by scientists as the most accurate assessment of polar ice melt to date. An international group of 47 experts who study satellite mapping data pulled together 50 different ice-sheet loss estimates over two decades, merging them into a single report. It found that Greenland’s melt was five times higher than in the mid-1990s, accounting for most of the ice loss. The findings are far more reliable than those used in the 2007 International Panel on Climate Change, which was unable to say if Antarctia was melting. Although the main culprit for sea-level rise now is expansion of the oceans as they are globally heated, ice sheet loss will become the main driver, adding about 40 inches by 2100. And scientists say even a half foot rise makes it easier for an East Coast storm to cause flooding.
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. This is how YOU can make a difference.
Grim picture for ice-loss in Greenland, Antarctica. The giant polar ice sheets in Greenland and Antarctica are losing three times as much ice as 20 years ago, adding to the rising sea level that threatens low-lying coastal areas, according to a study hailed by scientists as the most accurate assessment of polar ice melt to date. Washington Post New study affirms ice-sheet-loss estimates in Greenland, Antarctica Darryl Fears http://www.washingtonpost.com/national/health-science/new-study-affirms-ice-sheet-loss-estimates-in-greenland-antarctica/2012/11/29/9d3e3834-3a3a-11e2-b01f-5f55b193f58f_story.html