just released
paper on the dramatic thinning Arctic sea-ice: University of Washington press release -
here:
The results, published in The Cryosphere, show a thinning in the central Arctic Ocean of 65 percent between 1975 and 2012. September ice thickness, when the ice cover is at a minimum, is 85 percent thinner for the same 37-year stretch.
“The ice is thinning dramatically,” said lead author Ron Lindsay, a climatologist at the UW Applied Physics Laboratory. “We knew the ice was thinning, but we now have additional confirmation on how fast, and we can see that it’s not slowing down.”
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of course, as I shown several times over, Antarctic sea-ice extent is a single-years presentation as, effectively, all Antarctic sea-ice melts from one year's freezing season to the next year's melting season. The following graph is a most illustrative account of the respective minimum sea-ice extents for the Arctic and Antarctic... that time when most of the sunlight reaches the respective poles: again, little trend could be shown with the Antarctic minimum since it (effectively) all melts year to year... there is no concept of "multi-year" ice-extent in the Antarctic (as is the case within the Arctic).