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Politics : Formerly About Advanced Micro Devices

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To: Taro who wrote (843880)	3/20/2015 7:56:51 PM
From: tejek	Read Replies (6) of 1575844

*Why is Antarctic sea ice setting record highs in a warming world?* The behavior of Antarctic sea ice is a bit of an enigma. As I wrote last year, when Antarctic sea ice set a record high, scientists have developed numerous theories for why the ice is growing – but its dynamics remain poorly understood. The Intergovernmental Panel on Climate Change weighed in on this complicated matter in its assessment published earlier this year: For Antarctic sea ice extent, the shortness of the observed record and differences in simulated and observed variability preclude an assessment of whether or not the observed increase since 1979 is inconsistent with internal variability. Untangling the processes involved with trends and variability in Antarctica and surrounding waters remains complex and several studies are contradictory. In conclusion there is low confidence in the scientific understanding of the observed increase in Antarctic sea ice extent since 1979… This lack of understanding notwithstanding, increasing Antarctic sea ice does not in any way disprove global warming. Despite the increase in winter sea ice in the Antarctic, the water in the Southern Ocean is warming while satellite measurements have shown that the *Antarctic continent is – on balance – losing ice*. Whereas there is an apparent straight forward relationship between rising temperatures and loss of ice during the summer in the Arctic; warming temperatures in the Antarctic in winter (when background temperatures are really cold) simply do not have the same effect. washingtonpost.com

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