Massive Greenland meltdown? Not so fast, say scientists
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Digg Facebook Newsvine del.icio.us Reddit StumbleUpon Technorati Yahoo! Bookmarks Print by Marlowe Hood Marlowe Hood – Sun Jan 11, 1:21 pm ET AFP/File – A general view shows the Arctic Ocean off the coast of Greenland. The recent acceleration of glacier … PARIS (AFP) – The recent acceleration of glacier melt-off in Greenland, which some scientists fear could dramatically raise sea levels, may only be a temporary phenomenon, according to a study published Sunday.
Researchers in Britain and the United States devised computer models to test three scenarios that could account for rapid -- by the standards applied to glaciers -- loss of mass from the Helheim Glacier, one of Greenland's largest.
Two were based on changes caused directly by global warming: an increase in the amount of water that greases the underbelly of the glacier as it slides toward the sea, and a general thinning due to melting.
If confirmed, either of these explanations would point to a sustained increase in runoff over the coming decades, fueling speculation that sea level could rise faster and higher than once thought.
The stakes are enormous: the rate at which the global ocean water mark rises could have a devastating impact on hundreds of millions of people living in low-lying areas around the world.
But a team led by Andreas Vieli and Faezeh Nick of Durham University in Britain found that neither of these scenarios matched the data.
"They simply don't fit what we have observed," said Vieli in an interview.
http://news.yahoo.com/s/afp/scienceclimatewarmingglaciersgreenland_newsmlmmd