You've probably heard in the media about the collapse of the Wilkinson Ice Shelf in Antarctica. Incontrovertible proof of global warming (also known as catastrophic climate chage or dangerous climate change)-- or is it?
Short story-- the ice shelf broke off due to shear stresses not due to melting.
The other polar story this week has been the revelation that although the north pole ice extent is increasing it's mainly "new" ice not old ice, and new ice is more prone to melt than old ice. Two things about this: if you are increasing ice extent from a previous low point, isn't all of the increase going to be "new". But more sinister than this, the definition of "new" changed. Last year the definition was ice that was less than one year old, but this year with a continuation of increasing ice in the Arctic, they changed the definition to less than two years old. Next year the definition will be less than three years old, and so on. Clearly the "new" ice is not melting as fast as the alarmists would like.
Meanwhile the figures show that at both poles the amount of sea ice is increasing and increasing at an increasing rate... oh no catastrophic global cooling!
Lots of nice pictures and graphs at wattsupwiththat
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