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Politics : American Presidential Politics and foreign affairs -- Ignore unavailable to you. Want to Upgrade?

To: DuckTapeSunroof who wrote (29482)	9/2/2008 2:56:48 PM
From: TimF	1 Recommendation Read Replies (1) \| Respond to of 71588

There is less arctic ice coverage than in 1979 (which would be expected, in addition to any longer term warming, the 70s where a relatively cold decade), but there is about 10% more coverage than least year (which admittedly was a low since they started keeping detailed records) In the Antarctic the ice coverage has been increasing in recent years. arctic.atmos.uiuc.edu

To: DuckTapeSunroof who wrote (29482)	9/5/2008 1:06:19 PM
From: TimF	Read Replies (1) \| Respond to of 71588

Open Water Circling North Pole? Not Quite By Andrew C. Revkin There have been some breathless headlines in the last few days about the North Pole’s being an “island” for the first time in 125,000 years. Aside from the fact that 90 degrees north sits in the middle of a 2.5-mile-deep ocean, that’s quite a statement considering two things: first, no one has been routinely monitoring sea ice along both coastlines between then and now, and second, the region was clearly warmer than it is today (in summers) around 8,000 to 10,000 years ago — on both the Siberian and North American sides. And one of the groups focusing most closely on possible Arctic shipping lanes, the National Ice Center operated by the Navy and Commerce Department, says flatly that the satellites are misreading conditions in many spots and that there is too much ice in a critical spot along the Russian coast (highlighted in the smaller image above) to allow anything but ice-hardened ships to get through. In an e-mail message Wednesday, Sean R. Helfrich, a scientist at the ice center, said that ponds of meltwater pooling on sea ice could fool certain satellite-borne instruments into interpreting ice as open water, “suggesting areas that have substantial ice cover as being sea-ice free.” The highlighted area is probably still impassible ice, including large amounts of thick old floes, he said. I sent the note to an array of sea-ice experts, and many, including Mark Serreze at the National Snow and Ice Data Center, concurred... dotearth.blogs.nytimes.com