how many canaries in the mine do we need?

Report: Arctic temperatures at record highs
By Randolph E. Schmid, Associated Press Science Writer, via USA Today, October 16, 2008

Autumn temperatures in the Arctic are at record levels, the Arctic Ocean is getting warmer and less salty as sea ice melts, and reindeer herds appear to be declining, researchers reported Thursday.

"Obviously, the planet is interconnected, so what happens in the Arctic does matter" to the rest of the world, Jackie Richter-Menge of the Cold Regions Research and Engineering Laboratory in Hanover, N.H., said in releasing the third annual Arctic Report Card.

The report, compiled by 46 scientists from 10 countries, looks at a variety of conditions in the Arctic.

The region has long been expected to be among the first areas to show impacts from global warming, which the Intergovernmental Panel on Climate Change says is largely a result of human activities adding carbon dioxide and other gases to the atmosphere.

"Changes in the Arctic show a domino effect from multiple causes more clearly than in other regions," said James Overland, an oceanographer at the National Oceanic and Atmospheric Administration's Pacific Marine Environmental Laboratory in Seattle. "It's a sensitive system and often reflects changes in relatively fast and dramatic ways."

For example, autumn air temperatures in the Arctic are at a record 9 degrees above normal.

The report noted that 2007 was the warmest year on record the Arctic, leading to a record loss of sea ice. This year's sea ice melt was second only to 2007. . . .

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