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Politics : The Exxon Free Environmental Thread -- Ignore unavailable to you. Want to Upgrade?

To: Wharf Rat who wrote (1476)	11/6/2007 10:20:42 AM
From: Wharf Rat	Read Replies (1) \| Respond to of 49091

Climate shift 'poles apart' By Richard Gray Last Updated: 12:01am GMT 04/11/2007 The Antarctic will be spared the worst of global warming and its ice mass could even grow, but the Arctic will be devastated by rising temperatures, a major new scientific report will claim. In contrast to earlier fears that ice around the South Pole will suffer widespread melting, the United Nations intergovernmental panel on climate change says that Antarctica's ice sheets will remain too cold for widespread melting before the end of the century and are expected to get bigger as more snow falls. The Arctic, by comparison, will suffer widespread loss of sea ice while the Greenland ice sheet will have almost completely disappeared by the end of the century. Up to half of the Arctic tundra will be replaced by forests as temperatures rise by 4degC. In two weeks the UN panel will publish its final, most authoritative assessment of the impact global warming is having on the planet and how it can be tackled. Its conclusions contrast with fears that Antarctica was already beginning to suffer the effects of climate change, with large chunks of the continental ice shelf breaking off in recent years. In 2002, the disintegration of Larsen B ice shelf, an area a little smaller than Cornwall, sparked alarm among scientists that the ice was disappearing. Recent research has also shown that the ice - more than a mile thick in places - is thinning out. The UN panel faces intense criticism from environmental lobbyists who say it is down-playing global warming. Prof David Vaughan, a glacier expert at the British Antarctic Survey, said: "There are a lot of differences from year to year in the Antarctic. Some climate stations show warming and some, like the one at the South Pole, show cooling. The jury is still out on what is going to happen." telegraph.co.uk