*Michio Aoyama^1,2, Chikako Cheong³, Tsutomu Miura³, Takeshi Fujii⁴, Hitoshi Mitsuda⁴, Tomomi Sone⁵, Hiroshi Uchida¹, Akihiko Murata¹ (1.Research Institute of Global Change, The Japan Agency for Marine-Earth Science and Technology , 2.Center for Research in Isotopes and Environmental Dynamic, Faculty of Life and Environmental Sciences, University of Tsukuba, 3.National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), 4.Laboratory for Instrumentation and Analysis, KANSO CO., LTD., 5.MARINE WORKS JAPAN LTD.)

*Sayaka Yasunaka¹, Tsuneo Ono², Kosei Sasaoka¹, Kanako Sato¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.Japan Fisheries Research and Education Agency)

*Hiroyuki Tsujino¹, Toyama Katsuya¹, Hideyuki Nakano¹, Shiro Nishikawa², Toru Sugiyama², Haruka Nishikawa², Yoichi Ishikawa² (1.Japan Meteorological Agency / Meteorological Research Institute, 2.Japan Agency for Marine-Earth Science and Technology)

*Kiminori Sugino¹, Akira Oka¹ (1.Atmosphere and Ocean Research Institute, The University of Tokyo)

*Shohgo Kawashima¹, Takaaki Itai¹ (1.The University of Tokyo)

*Kazuhiro Misumi¹ (1.Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry)