BLOOMBERG:The rapid shrinking of glaciers in Greenland during recent years may stall, diminishing the Arctic island’s potential contribution to rising sea levels blamed on global warming, a U.K.-led research team found.
The study in the journal Nature Geoscience indicates the faster-than-normal ice loss observed in many of Greenland’s glaciers in the early 2000s won’t be sustained, said Andreas Vieli, a glaciologist at Durham University in northern England.
“Our modeling suggests that these very high rates of glacier retreat can’t be maintained for very long,” Vieli, a co-author of the paper, said in a telephone interview.
Scientists are improving their knowledge of glaciers so the data can be used to predict their longevity. Greenland contains enough ice to raise sea levels by about 7 meters (23 feet), threatening coastal villages around the world, if it melted.
A United Nations global warming panel said in 2007 that melting ice may contribute to rising oceans this century while acknowledging that uncertainty surrounds how much ice Greenland will lose. The latest findings may help calibrate UN models.
The Durham University-led scientists used a computer model to analyze changes in Helheim Glacier, in southeast Greenland.
They concluded the driver of the melting was a break at its snout in the sea that had a domino effect inland. They also found glaciers stabilize after an initial rapid retreat.
IOW: AL GORE AND THE ECO-NUTSIE ALARMISTS ARE WRONG.
- KEY POINT: THE RECENT RETREAT WAS NOT RELATED TO CLIMATE CHANGE - LOCALLY OR GLOBALLY.
THEREFORE, CARBON TAXES AND SWAPS AND CAPS ARE AN UNNECESSARY HINDRANCE TO INDUSTRY AND PROSPERITY.
It ebbs, it flows. It comes, it goes. It's all about cycles and mother nature and God. Those who believe humans are driving the earth to destruction are wrong on so many levels, but they're making billions from books, documentaries and speaking engagements. And the world keeps spinning.
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ReplyDeleteYes, and in the same press release is the statement by Andreas Viele
ReplyDelete“We found was that these outlet glaciers are extremely sensitive to fluctuations in climate and ocean temperature at the terminus,” Vieli said. “When temperatures go up a bit, there’s a strong reaction in terms of mass loss: They start to flow fast and thin rapidly. But also, they adjust very quickly to the new temperature or climate setting.”
They concluded the driver for rapid glacier retreat in this case is an increase in "temperature or climate setting", at this location it was increased sea temperature which melted and then caused a break in the snout.
Increase in air temperature also causes thinning on land based glaciers, until a new equilibrium thickness/deposition and speed is reached.
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