Thursday, February 23, 2006

Predictions of how quickly Earth's oceans will rise over the next century rendered obsolete

Well, that didn't take long, did it?
Greenland's glaciers are melting into the sea twice as fast as previously believed, the result of a warming trend that renders obsolete predictions of how quickly Earth's oceans will rise over the next century, scientists said yesterday.
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The scientists said they do not yet understand the precise mechanism causing glaciers to flow and melt more rapidly, but they said the changes in Greenland were unambiguous -- and accelerating: In 1996, the amount of water produced by melting ice in Greenland was about 90 times the amount consumed by Los Angeles in a year. Last year, the melted ice amounted to 225 times the volume of water that city uses annually.
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The ice sheets in Greenland and Antarctica are among the largest reservoirs of fresh water on Earth, and their fate is expected to be a major factor in determining how much the oceans will rise. Rignot and University of Kansas scientist Pannir Kanagaratnam, who published their findings yesterday in the journal Science, declined to guess how much the faster melting would raise sea levels but said current estimates of around 20 inches over the next century are probably too low.

While it is possible that increased precipitation in northern Greenland is somehow compensating for the melting in the south, the scientists said that is unlikely.
Let's see how Bush responds to the latest findings...

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