*Mariko Honda¹, Kay I. Ohshima², Vigan Mensah², Masatoshi Sato³ (1.Graduate School of Environmental Science, Hokkaido University, 2.Institute of Low Temperature Science, Hokkaido University, 3.Wakkanai Fisheries Research Institute, Hokkaido Research Organization)

*YenChen CHEN¹, Vigan Mensah², Kay I. Ohshima² (1.Graduate School of Environmental Science, Hokkaido University, 2.Institute of Low Temperature Science, Hokkaido University)

*Vigan Mensah¹, Igor Yashayaev², Koji Fujita³, Stephen E. L. Howell⁴, Miho Ikeda⁵, Kay I. Ohshima^1,6 (1.Institute of Low Temperature Science, Hokkaido University, 2.Bedford Institute of Oceanography, Dartmouth, NS, Canada, 3.Graduate school of environmental studies, Nagoya University, 4.Climate Research Division, Environment and Climate Change Canada, Toronto, Canada, 5.Faculty of Science, Hokkaido University, 6.Arctic Research Center, Hokkaido University, Sapporo)

*Masashi Machida¹, Kay I. Ohshima², Daisuke Simizu³, Kazuki Nakata⁴, Mizuki Kuga², Vigan Mensah², Alexander Fraser⁵, Kohei Mizobata⁶, Takeshi Tamura³, Yasushi Fukamachi⁷ (1.Graduate School of Env. Science, Hokkaido University, 2.Institute of Low Temperature Science, Hokkaido University, 3.National Institute of Polar Research, 4.Japan Aerospace Exploration Agency, 5.Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, 6.Tokyo University of Marine Science and Technology, 7.Arctic Research Center, Hokkaido University)

*Vigan Mensah¹, Yoshihiro Nakayama^1,2, Masakazu Fujii⁴, Kay I. Ohshima^1,3 (1.Institute of Low Temperature Science, Hokkaido University, 2.Engineering Faculty, Dartmouth College, NH, U.S.A, 3.Arctic Research Center, Hokkaido University, 4.National Institute of Polar Research)