*Takuji Waseda¹、Kazutaka Tateyama²、Ryosuke Uchiyama¹、Takehiko Nose¹、Tsubasa Kodaira¹、Tomotaka Katsuno¹、Takeshi Tamura³、Takenobu Toyota⁴、Jean Rabault⁵、Mario Hoppmann⁶、Daisuke Shimizu³ (1.The University of Tokyo、2.Kitami Institute of Technology、3.National Institute of Polar Research、4.Hokkaido University、5.Met. Norway、6.Alfred-Wegener-Institut)