The Cryosphere Discussions www.the-cryosphere-discuss.net 1994-0432 1994-0440 4 3 2010 10.5194/tcd-4-1391-2010 http://www.the-cryosphere-discuss.net/4/1391/2010/ http://www.the-cryosphere-discuss.net/4/1391/2010/tcd-4-1391-2010.html http://www.the-cryosphere-discuss.net/4/1391/2010/tcd-4-1391-2010.pdf 1391 1431 2010-08-25 Permafrost and surface energy balance of a polygonal tundra site in Northern Siberia – Part 2: Winter M. Langer moritz.langer@awi.de S. Westermann S. Muster K. Piel J. Boike Alfred-Wegener-Institute for Polar and Marine Research, Telegrafenberg A43, 14473 Potsdam, Germany Permafrost is largely determined by the surface energy balance. Its vulnerability to degradation due to climate warming depends on complex soil-atmosphere interactions. This article is the second part of a comprehensive surface energy balance study at a polygonal tundra site in Northern Siberia. 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