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Posted Sun Dec 18 2011: from New York Times:
As Permafrost Thaws, Scientists Study the Risks http://apocadocs.com/s.pl?1324220718
A bubble rose through a hole in the surface of a frozen lake. It popped, followed by another, and another, as if a pot were somehow boiling in the icy depths. Every bursting bubble sent up a puff of methane, a powerful greenhouse gas generated beneath the lake from the decay of plant debris. These plants last saw the light of day 30,000 years ago and have been locked in a deep freeze -- until now.... If a substantial amount of the carbon should enter the atmosphere, it would intensify the planetary warming. An especially worrisome possibility is that a significant proportion will emerge not as carbon dioxide, the gas that usually forms when organic material breaks down, but as methane, produced when the breakdown occurs in lakes or wetlands. Methane is especially potent at trapping the sun's heat, and the potential for large new methane emissions in the Arctic is one of the biggest wild cards in climate science.... A recent survey drew on the expertise of 41 permafrost scientists to offer more informal projections. They estimated that if human fossil-fuel burning remained high and the planet warmed sharply, the gases from permafrost could eventually equal 35 percent of today's annual human emissions.
[Read more stories about: arctic meltdown, permafrost meltdown, tipping point]

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'Doc Jim says:
"Transitoryfrost" just doesn't have the same ring to it.

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  • (As Permafrost Thaws, Scientists Study the Risks)
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