Tomohiko TSUNODA

Senior Research Fellow
Ocean Policy Research Institute of The Sasakawa Peace Foundation

After finishing his Master of Science at the Center for Climate System Research of the University of Tokyo, he joined the Mitsubishi Research Institute (MRI) in 1998. He held the position of Senior Researcher, which he vacated in 2015.
During his career at the MRI, he was engaged in many national projects on ocean policy, such as developing a Marine Cadastre prototype system and aiding in the formulation of the second Basic Plan on Ocean Policy in Japan.
Although his research mainly focused on physical oceanography, his research interests also include ocean policy and science-based information sharing. He is also in charge of the program on the UN Decade of Ocean Science at OPRI-SPF.


Ocean Policy Research, Ocean and Climate Change




Junko Toyoshima, Iwao Fujii, Miko Maekawa, Tomohiko Tsunoda, Noriko Kamada, Hiroka Hidaka, Yasuhiro Tojo, Kazuko Ikeda (2022) Assessing effectiveness of satoumi activities in Japanese coastal areas from ecological and socioeconomic perspectives. Ocean & Coastal Management, 230, doi:10.1016/j.ocecoaman.2022.106354

Ishizu,M. ; Miyazawa, Y.; Tsunoda T,;  Guo, X. "Seasonal variability in the inorganic ocean carbon cycle in the Northwest Pacific evaluated using a biogeochemical and carbon model coupled with an operational ocean model", Climatic Change162, 877–902, 2020

Ishizu, M.; Miyazawa, Y.; Tsunoda, T.; Guo, X. “Development of a biogeochemical and carbon model related to ocean acidification indices with an operational ocean model product in the North Western Pacific”, Sustainability, 11(9), 2677,, 2019

Ishizu, M.; Miyazawa, Y.; Tsunoda, T.; Ono, T. ”Long-term trends in pH in Japanese coastal seawater”, Biogeoscience, 16, 4747–4763,, 2019

Marine Lebrec, Stephanie Stefanski, Ruth Gates, Sevil Acar, Yimmang Golbuu, Astrid Claudel-Rusin, Haruko Kurihara, Katrin Rehdanz, Delphine Paugam-Baudoin, Tomohiko Tsunoda, Peter W. Swarzenski ,“Ocean acidification impacts in select Pacific Basin coral reef ecosystems”, Regional Studies in Marine Science, 28,, 2019

Sastri A.R, Christian J.R, Achterberg E.P, Atamanchuk D., Buck J.JH, Bresnahan P., Duke P.J, Evans W., Gonski S.F, Johnson B., Juniper S.K, Mihaly S., Miller L.A, Morley M., Murphy D., Nakaoka S., Ono T., Parker G., Simpson K., Tsunoda T.,” Perspectives on in situ sensors for ocean acidification research”, Frontiers in Marine Science, 6, 2019

Tomohiko Tsunoda, “Study on the Impacts of Ocean Acidification in the Pacific Islands States”, Journal of Japan Society for Pacific Island Studies, 5, 2017 (in Japanese)

Tomohiko Tsunoda and Keita Furukawa, “Development of Communication Tools on Ocean Acidification”, PICES 2016 Annual Meeting, 2016

Masanori Muto, Tomohiko Tsunoda, and Fumio Kumasaka, “Development of Marine Spatial Data Infrastructure in Japan”, GSDI 12 World Conference, 2010.





The Oceanographic Society of Japan
Japan Society of Ocean Policy
Japan Society for Pacific Island Studies


2015- Senior Research Fellow at Ocean Policy Research Institute of the Sasakawa Peace Foundation (OPRI-SPF) 
1998-2015 Mitsubishi Research Institute (MRI) in 1998. He held positions as Senior Researcher


Master of Science (1998 University of Tokyo)
Bachelor of Science (1996 Kyoto University)