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EnviroLink Forum • View topic - Record Arctic sea ice minimum extent .... again

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PostPosted: Thu Sep 15, 2011 8:49 pm 
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http://www.biologicaldiversity.org/news ... -2011.html

Arctic sea ice has melted to a level not recorded since satellite observations started in 1972 – and almost certainly not experienced for at least 8,000 years, say polar scientists.

Daily satellite sea-ice maps released by Bremen university physicists show that with a week's more melt expected this year, the floating ice in the Arctic covered an area of 4.24 million square kilometres on 8 September. The previous one-day minimum was 4.27m sq km on 17 September 2007.

The German researchers said the record melt was undoubtedly because of human-induced global warming. "The sea-ice retreat can no more be explained with the natural variability from one year to the next, caused by weather influence," said Georg Heygster, head of the Institute of Environmental Physics at Bremen.

"It seems to be clear that this is a further consequence of the man-made global warming with global consequences. Climate models show that the reduction is related to the man-made global warming, which, due to the albedo effect, is particularly pronounced in the Arctic," he said. The albedo effect is related to a surface's reflecting power – whiter sea ice reflects more of the sun's heat back into space than darker seawater, which absorbs the sun's heat and gets warmer.

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PostPosted: Fri Sep 16, 2011 1:52 am 
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Yoo hoo! Snow!

What's your take.....sounds like a lot of melting...


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PostPosted: Fri Sep 16, 2011 8:50 am 
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There's a dark side of me that craves a post-apocalyptic wasteland a la Mad Max, but Waterworld will do. Not having gas and electricity is going to be the biggest bummer.

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PostPosted: Fri Sep 16, 2011 2:54 pm 
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New records can be expected most years, including from the year before that was a record!
Temperatures, floods, storms, droughts, fires, snow, freezes, ice cap area and depth decreases, and others. Maybe Mad Max in some places, water world in others. Even if people would do the right thing and stop 90% of fossil fuel use and go to sustainable population, the momentum of heat in the system will allow for another .4*C rise. Probably enough to go beyond the tipping point of tundra, then ocean methane hydrate deposits self-release.
Then the temperatures will rise more, faster and faster, to PETM+ conditions 10 times faster, and the resulting ELE. No more ice ages for millions of years.
It is a 50-50 chance right now, even if they quit burning coal and oil 90%. As time goes on the percentage increases for the ELE scenario.
Business as usual until the crash, then it gets worse.
Its 2 in the morning, and the party is almost over.

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