RAPID DECLINE IN ARTIC ICE CAUSED BY UNUSUAL WINDS......

NASA Examines Arctic Sea Ice Changes Leading to Record Low in 2007

READ THIS AND YOU MAKE THE DECISION.

OH WHAT ARE WE GOING TO DO. THE ICE IS FALLING.............

The scientists observed less perennial ice cover in March 2007 than ever before, with the thick ice confined to the Arctic Ocean north of Canada. Consequently, the Arctic Ocean was dominated by thinner seasonal ice that melts faster. This ice is more easily compressed and responds more quickly to being pushed out of the Arctic by winds. Those thinner seasonal ice conditions facilitated the ice loss, leading to this year's record low amount of total Arctic sea ice. Nghiem said the rapid decline in winter perennial ice the past two years was caused by unusual winds.

"Unusual atmospheric conditions set up wind patterns that compressed the sea ice, loaded it into the Transpolar Drift Stream and then sped its flow out of the Arctic," he said. When that sea ice reached lower latitudes, it rapidly melted in the warmer waters. "The winds causing this trend in ice reduction were set up by an unusual pattern of atmospheric pressure that began at the beginning of this century," Nghiem said.

http://www.nasa.gov/vision/earth/lookingatearth/quikscat-20071001.html

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10/5/07