*Shin NAGAI¹, Shunsuke TEI², Hideki KOBAYASHI¹, Hiroki IKAWA³, Taro NAKAI⁴, Yongwon KIM³, Rikie SUZUKI¹, Atsuko SUGIMOTO² (1.Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, 2.Graduate School of Env.Science / Faculty of Env.Earth Science Hokkaido University, 3.International Arctic Research Center, University of Alaska Fairbanks, 4.Hydrospheric Atmospheric Research Center, Nagoya University)

*Miyuki KONDO¹, Masao UCHIDA¹, Motoo UTSUMI², Go IWAHANA³, Kenji YOSHIKAWA³, Hiroki IWATA⁴, Yoshinobu HARAZONO³, Taro NAKAI⁵, Kiyoshi TANABE¹, Yasuyuki SHIBATA¹ (1.National Institute for Environmental Studies, 2.University of Tsukuba, 3.University of Alaska, Fairbanks, 4.Kyoto University, 5.Nagoya University)