Friday, October 5, 2007

Hot Winds

One of the rallying cries of the anthropogenic global warming (AGW) crowd is “The Arctic Ice is melting!” The high priests of the AGW faith jumped quickly on this readily observable fact (the Arctic ice sheet has been melting) as evidence of AGW, and their lapdog media followers have repeated this claim endlessly. Something not usually linked with that claim, though, is a different puzzling fact: the Antarctic ice sheet has been growing, and quite dramatically. If AGW is the cause of the Arctic ice sheet shrinking, then why isn't the Antarctic ice sheet also shrinking? Somehow the AGW faithful managed to ignore this inconvenient little observation.

But now NASA has released a new study about the causes of the Arctic ice sheet melting. From the belly of the AGW beast (NASA is the home of the high priest of AGW, Jim Hansen) comes the news that the culprit appears to be a new pattern of winds:
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.

The Arctic Ocean's shift from perennial to seasonal ice is preconditioning the sea ice cover there for more efficient melting and further ice reductions each summer. The shift to seasonal ice decreases the reflectivity of Earth's surface and allows more solar energy to be absorbed in the ice-ocean system.
The biggest surprise for me in this news is that the NASA press flacks allowed a press release about weather to go out without an obligatory mention of the linkage between this climatic phenomenon and AGW. Ordinarily I'd have expected some completely unsubstantiated mention of how AGW caused this change in wind pattern. The fact that such a statement is missing suggests (a) the scientists involved don't believe such a linkage exists, or (b) the PR flack involved was drunk, stoned, about to quit NASA, or possibly all three.

How To Call The Cops...

Passed along by Mike D.:
HOW TO CALL THE POLICE WHEN YOU'RE OLD AND DON'T MOVE FAST ANYMORE.

George Phillips of Meridian, Mississippi was going up to bed when his wife told him that he'd left the light on in the garden shed, which she could see from the bedroom window.

George opened the back door to go turn off the light but saw that there were people in the shed stealing things.

He phoned the police, who asked "Is someone in your house?" and he said "no". Then they said that all patrols were busy, and that he should simply lock his door and an officer would be along when available. George said, "Okay," hung up, counted to 30, and phoned the police again.

"Hello, I just called you a few seconds ago because there were people stealing things from my shed. Well, you don't have to worry about them now because I've just shot them." Then he hung up

Within five minutes three police cars, an Armed Response Unit, and an ambulance showed up at the Phillips' residence and caught the burglars red-handed.

One of the Policemen said to George: "I thought you said that you'd shot them!"

George said, "I thought you said there was nobody available!"
Don't mess with the ancient and venerable folks!

Snopes has this listed as "true", though some of the details are wrong...