Temporal Evolution
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A composite animation of the Arctic Ocean's seasonal sea ice retreat in 2007 (from the Cryosphere Today – the original 200mb file is here). To my layman's eye, the rate of melting between July and September is staggering.
Climatically, interesting things are afoot in the high Arctic at the moment; after the lowest sea ice extent ever recorded last summer, the winter ice area seems to have bounced back to a level approaching the 1979-2000 mean. See also Christopher Booker's Notebook in today's Telegraph. Curiouser and curiouser.
— Filed under Climate Change, North Pole 2008