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North Pole Still Melting August 28, 2008

Posted by tkcollier in Enviroment.
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Arctic Sea Ice Drops to 2nd Lowest Level on Record | LiveScience
In spite of a shift to what climatologists call the cold phase of a cycle in the North Pacific Ocean called the “Pacific Decadal Oscillation,” or PDO, giving Alaska an unusually cold and wet summer and a record breaking Winter, Summer sea ice last year shrunk to about 1.65 million square miles, nearly 40 percent less than the long-term average between 1979 and 2000. Most climate modelers predict a continued downward spiral, possibly with an Arctic Ocean that’s ice free during summer months by 2030 or sooner. Most of the Ice loss has been on the pacific side, while the Atlantic had a major build of new ice last winter.

Krenz said the announcement Tuesday showed that last year’s record low sea ice was not an anomaly. As ice covers fewer square miles of ocean, he said, warming will accelerate.”It’s going to accelerate climate change through changes in the reflectance of the Arctic,” he said. “It’s going from bright ice to a much darker ocean.”More square miles of dark ocean will absorb more heat. More warmth will accelerate melting of Arctic permafrost, allowing organic matter now frozen to melt and add to the greenhouse gas problem, he said.”That allows for the breakdown of that by bacteria and other organisms that release CO2 or methane, depending on how the breakdown occurs,” he said.

Other authors claim that this is a normal Decadal Arctic Oscillation.


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