Greenland ice may melt much faster: U.N. scientist
25 June 2007
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Follow up report on “Greenland ice sheet loss speeding up“.
New research shows that man-made climate change could cause the Greenland ice sheet to break up in hundreds, rather than thousands, of years, the chair of a United Nations panel of scientists said on Monday.
Its entire collapse would raise sea-levels globally by around 7 meters (23 feet), they said.
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The new research shows rapid melting on the surface of the Greenland ice sheet. Meltwater is disappearing down huge crevasses, and theory suggests that water will lubricate the bottom of the ice sheet and speed up its flow into the sea.
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Metz is the co-chair of the third of the IPCC’s three reports published this year, focusing on the policy options to fight the global warming problem.
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Metz underlined the scale of the problem in trying to establish control over greenhouse gas emissions within 10 years, the most ambitious target his report considered.
“It’s a huge challenge to turn around the supertanker of global emissions within 10 years. Many would say it’s impossible,” he told the conference. “I’m not saying that yet.”
An iceberg is reflected in calm ocean water at the mouth of the Jakobshavns ice fjord near Ilulissat in this photo taken May 15, 2007. New research shows that man-made climate change could cause the Greenland ice sheet to break up in hundreds, rather than thousands, of years, the chair of a United Nations panel of scientists said on Monday.
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