Farewell to the Arctic — as We Know It -- Signs of Climate Change: Arctic Ice Is Vanishing Fast - TIME
The physical changes from global warming are visible in the Arctic almost in real time — and they are a warning for those of us who live in more comfortable latitudes. As the polar expert Walt Meier of the National Snow and Ice Data Center (NSIDC) has put it: "What happens in the Arctic doesn't stay in the Arctic."2007 Record Low Date Arrives – 9000 Manhattans Of Recovery | Real Science
That's bad news, since not only is the warming threat in the Arctic bad, it's almost certainly intensifying.
...Some scientists worry that Arctic sea ice may be going from a downward spiral to a "death spiral," one from which there is no escape even if we can manage to reduce carbon emissions. As more ice melts, more dark open water is exposed, which absorbs more heat, accelerating the melting. (White sea ice, by contrast, reflects sunlight, slowing warming.) Until recently, many scientists thought it might take until the end of the century for the North Pole to become completely ice-free during the summer. Now there are estimates that we could see a naked North Pole by 2030 or even earlier. "The melting is happening faster in the real world than it has in the models," says James Overland, an oceanographer for the National Oceanic and Atmospheric Administration.
September 24, 2007 was the date of the lowest JAXA Arctic ice extent. The University of Bremen announced a record low two weeks ago just before the Al Gore telethon, but JAXA shows that there are 9,000 more Manhattans of ice than there was on this date in 2007. That is 1/4 of a Manhattan of extra ice for each Polar Bear!