Wednesday, July 31, 2013

North Pole refreezes, scientist says global warming not a factor

North Pole refreezes, scientist says global warming not a factor | Rare:
"The water the buoy was bobbing in last week was not a lake, but a melt pond, a common occurrence in the Arctic summer when the sun shines 24 hours a day, said Morison, principal oceanographer for the North Pole Environmental Observatory, funded by the U.S. National Science Foundation.
While the air temperature hovers right around the freezing point, solar radiation works to melt snow and the upper layer of sea ice.
Some of the water drains through cracks down into the Arctic Ocean and the rest forms fresh-water ponds on top of the sea ice with their surfaces slightly above sea level.
“That’s just part of summer ice conditions, and as far as we know it always has been,” Morison said."

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