- 2023/07 - 現在 Geochemical Society, Nomination Committee Member
- 2023/05 - 現在 [Blue Biosphere] Exploration of the Blue Biosphere-Climate System Towards Carbon Cycle Management Advisor
- 2023/04 - 現在 The Oceanographic Society of Japan Vice President
- 2023/02 - 現在 MEXT Council for Science and Technology Member
- 2022/07 - 現在 Research Center for Science System Chief Researcher
- 2021/08 - 現在 Japan Science and Technology Agency, Selection Committee for Maria Skłodowska-Curie Award Member
- 2020/07 - 現在 内閣府総合海洋政策本部参与会議 参与
- 2019/04 - 現在 日本海洋学会評議員会 評議員
- 2018/07 - 現在 Ecosystem Studies of Sub-Arctic and Arctic Seas (ESSAS) Regional progmram of Integrated Marine Biosphere Research project (IMBeR) Co-chair
- 2014/10 - 現在 Science Council of Japan Member
- 2014/10 - 現在 The Science Council of Japan Associate member
- 2013/11 - 現在 Paleosciences Society Council
- 2013/04 - 現在 The Oceanographic Society of Japan Board/ Council
- 2013/03 - 現在 The Scientific World Journal 編集委員
- 2013/01 - 現在 Ecosystem Studies of Sub-Arctic Seas (ESSAS), Integrated Marine Biogeochemistry and Ecosystem Research(IMBER) Science Steering Committee
- 2012/01 - 現在 Geochemical Society of Japan Board/ Council
- 2020/04 - 2023/03 JST創発的研究支援事業運営委員会 委員
- 2019/01 - 2021/12 Geochemical Society Board member, Asia Oceania Director
- 2018/01 - 2020/03 Paleosciences Society President
- 2017/04 - 2020/03 地球環境史学会 会長
- 2017/11 - 2018/08 日本地球化学会 副会長
- 2013/05 - 2018/06 Ecosystem Studies of Sub-Arctic Seas (ESSAS), Regional program of Integrated Marine Biogeochemistry and Ecosystem Research(IMBER) 科学運営委員
- 2014/06 - 2018/05 Japan Geoscience Union Director
- 2013/04 - 2018/03 日本海洋学会 幹事/評議員
- 2013/12 - 2017/12 地球環境史学会 副会長/評議員
- 2009 - Reviewer of Grant-in-Aid for Scientific Research (FY2009)
- 2009 - Lecturer of University of Ryukyu (FY2009)
- 2009 - Lecturer of Kobe University (FY2009)
- 2008 - Member of Subdivision on Ocean Development, Council for Science and Technology, Ministry of Education, Culture, Sports, Science and Technology, Japan. Lecturer of Shizuoka University (FY2008)
- 2007 - Editor of Journal of Oceanography (FY2007-)
- 2007 - Member of Japanese committee of the Past Global Changes of IGBP/WCRP, Science council of Japan (FY2007-)
- 2006 - Member of Japanese committee of the International Association of Geochemistry, Science council of Japan (FY2006-)
- 2006 - Member of future plan committee of the Geochemical Society of Japan (FY2006-FY2007)
- 2004 - Member of judging committee for Ph. D dissertation of Univ. of Concepcion, Chile (FY2004-)
- 2004 - Member of judging committee for Ph. D dissertation of Kyushu University (FY2004)
- 内閣府 日本学術会議 環境学委員会・地球惑星科学委員会合同・IGBP/WCRP合同分科会PAGES小委員会委員(平成19〜)
- 内閣府 日本学術会議 地球惑星科学委員会国際対応分科会IAGC小委員会委員(平成18〜)
- 情報・システム研究機構国立極地研究所運営会議南極観測審議委員会重点研究観測専門部会(VIII期)委員(平成21年12月〜)