*Hidetaka Kobayashi1, Akira Oka1 (1.Atmosphere and Ocean Research Institute, The University of Tokyo)
convener:Osamu Seki(Institute of Low Temperature Science, Hokkaido University), Akira Oka(Atmosphere and Ocean Research Institute, The University of Tokyo), Yoshifumi Nogi(National Institute of Polar Research), Robin Elizabeth Bell(Lamont Doherty Earth Observatory)