The data from drifting stations were made available by a project of the U.S.–Russian Commission on Environmental Cooperation (Gore–Chernomyrdin Commission), with partial funding from the Office of Naval Research. This work was supported by NASA’s Polar Research Program Office under Grant NAGW-4382, which also funded the acquisition of the Sever snow depth data. We thank Roger Barry, Chris Bretherton, Thomas Grenfell, Glen Liston, Seelye Martin, Gary Maykut, Il’ya Romanov, Axel Schweiger, and Harry Stern for helpful discussion. SGW acknowledges the hospitality of the Antarctic Cooperative Research Centre at the University of Tasmania during the writing of this paper.
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