*Ayumi Kotani¹, Takeshi Ohta¹ (1.Graduate School of Bioagricultural Sciences, Nagoya University)

*Kumiko TAKATA^1,2,3, Prabir Patra³, Dmitry Belikov^2,1, Ayumi Kotani⁴, Junko Mori^3,1, GTMIP Group, Kazuhito Ichii³, Tazu Saeki³, Yosuke Niwa⁵, Kazuyuki Saito³, Takeshi Ohta⁴, Shamil Maksyutov², Toshinobu Machida², Alexander Ganshin^6,7, Ruslan Zhuravlev^6,7, Atsuko Sugimoto⁸, Shuji Aoki⁹ (1.Arctic Environment Research Center, National Institute of Polar Research, 2.CGER, National Institute for Environmental Studies, 3.Japan Agency for Marine-Earth Science and Technology, 4.Nagoya Univ., 5.Meteoroligical Research Institute, JMA, 6.Tomsk State University, 7.Central Aerological Observatory, 8.Hokkaido University, 9.Tohoku University)

*Hisashi Sato¹, Hideki Kobayashi¹, Go Iwahana², Takeshi Ohta³ (1.Department of Environmental Geochemical Cycle Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2.International Arctic Research Center, University of Alaska Fairbanks, 3.Graduate School of Bioagricultural Sciences, Nagoya University)