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Greenland ice sheet meltdown: It's spreading, study finds

Icemelt

Scientists studying global warming have shifted attention to northwestern Greenland, where new evidence is showing that the melting of ice sheets has spread.

Melting attributed to the buildup of greenhouse gases in the atmosphere has been well documented in the southern portion of Greenland's ice sheet, which contains about 20% of the planet's ice -- enough to cause an ocean rise of 21 feet if it all melts.

A team led by the Denmark Technical Institute's National Space Institute in Copenhagen used data from NASA and GPS measurements to document crustal uplift caused by the loss of ice mass pressing down on bedrock. 

"This is a phenomenon that was undocumented before this study," said University of Colorado Boulder physics professor and study co-author John Wahr. "Our speculation is that some of the big glaciers in this region are sliding downhill faster and dumping more ice in the ocean."

The scientists believe accelerated ice loss began moving up the northwestern coast in late 2005.

Other co-authors on the study included Michael Bevis and Eric Kendrick from Ohio State University and Isabella Velicogna of UC Irvine, who also is a scientist at NASA's Jet Propulsion Laboratory. It was printed in Geophysical Research Letters, a publication of the American Geophysical Union.

"These changes on the Greenland ice sheet are happening fast, and we are definitely losing more ice mass than we had anticipated, " said Velicogna. "We also are seeing this ice mass loss trend in Antarctica, a sign that warming temperatures really are having an effect on ice in Earth's cold regions."

Researchers estimate that if melting in northwestern Greenland accelerates in major glaciers in the area, such as the Humboldt Glacier and the Peterman Glacier, Greenland's total ice loss could be increased by an additional 12 to 24 cubic miles within a few years.

Average air temperatures above Greenland's ice sheets have risen 4 degrees Fahrenheit since 1991.

-- Geoffrey Mohan

Photo: Melting of a Greenland glacier in 2005. Credit: John McConnico / Associated Press

 
Comments () | Archives (5)

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Looks like the hoaxers are still at it. Meanwhile, back in reality, NASA has just admitted that thier data is even more worthless than the fabricated data from Phil Jones. Al Gore is so full of it.

What I'd really like to see is a "legacy" project, through which comments like these can be preserved for future generations, so our descendents can trace and mark our words.

"Look, look--great Grandpa Taylor said the Green God died 'from hubris and corruption!' Is that why Mom says 'Here's to Paul and his Hummer' whenever she flushes? Can we see pictures of all those old islands that used to be?"

Of course, Mr. Taylor could be right; so right now he can begin gloating. It's the knowing that counts, the certainty that those who come will take our measure. And perhaps it will be so, as tomorrow's inquiring minds sleuth through their ancestors' digital history and riffle through corporate records hacked yesterday, unmasking shills to settle scores.

One can hope.

Given recent climate frauds, it is clear that partisan ideologies and cultish environmentalism have replaced prudent science and economic realities in climate policy. What is also clear is that environmentalism no longer offers any product or service in support of our future security and prosperity. Militant environmentalism and green-obsessed bureaucrats have become an “axis of antagonism” that we can no longer afford. Yes, the Green God has died from its own hubris and corruption. May it, and its extremists, rest in peace.

There has been a lot of hype about the cold winter in the USA. I live in Canada. We Canadians just experienced, along with Greenland our warmest winter since records have been kept (64 years). Climate change caused by an imbalance in the Earth's energy budget manifests itself more at the poles than at mid latitudes (USA) or at the equator, so our experience in Canada and in Greenland is entirely consistent with theory. Polar ice is melting rapidly but this won't cause flooding but Greenland is a BIG concern because it's ice sits on bedrock. Coastal Los Angeles is at great risk in this century from melting Greenland ice.

Are you kidding? No ones listening to this anymore. The ocean will rise 21 feet if it melts? Copenhagen, Boulder Colo.? The global warming crowd ( Al ) is hiding. LOL


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