- 2015/11 - 2022/02 Network for the Detection of Atmospheric Composition Change (NDACC), Satellite Working Group Co-chair
- 2012/02 - 2022/02 Science Council of Japan Committee for Earth and Planetary Science, IUGG Subsection Committee, IAMAS Subcommittee, Member
- 2010/09 - 2022/02 Meteorological Society of Japan Meteorological Society of Japan, Director
- 2008/04 - 2022/02 Kobe University Center for Planetary Science, Cooperating scientist
- 2007/03 - 2022/02 Science Council of Japan Joint Committee for Environmental Science and Earth and Planetary Science, IGBP-WCRP Joint Subsection Committee, SPARC Subcommittee, Member
- 2011/05 - 2021/03 Ministry of the Environment Review Committee on Protection of the Stratospheric Ozone Layer, Scientific Subcommittee, Member
- 2009/04 - 2019/04 Japan Aerospace Exploration Agency, Institute of Space and Astronautical Science Committee for Space Science, Member
- 2017/08 - 2019/03 Japan Aerospace Exploration Agency Institute of Space and Astronautical Science Advisory Committee for International Space Exploration, Member
- 2008/07 - 2016/09 International Ozone Commission (IO3C), International Association of Meteorology and Atmospheric Sciences (IAMAS) Member
- 2005/04 - 2016/03 Japan Aerospace Exploration Agency Institute of Space and Astronautical Science, ISS Science Project, Joint Research Project, Joint research scientist
- 2014/04 - 2015/03 Japan Aerospace Exploration Agency Institute of Space and Astronautical Science, Inter-University Research System, Principal investigator
- 2011/08 - 2014/03 Japan Aerospace Exploration Agency, Institute of Space and Astronautical Science,Visiting professor Visiting professor
- 2009/01 - 2012/12 World Climate Research Programme (WCRP), Stratospheric Processes And their Role in Climate (SPARC) Science Steering Group Member
- 2006/04 - 2007/03 American Geophysical Union (AGU), Journal of Geophysical Research (JGR) Editor Search Committee, Member
- 2001/06 - 2006/03 National Institute for Environmental Studies Research Project on Stratospheric Ozone Changes, Satellite Observation Research Team, Visiting scientist
- 2000/04 - 2006/03 Nagoya University Solar Terrestrial Environment Laboratory, Committee for Joint Research, Advisory Committee for Atmosphere, Member
- 2002/12 - 2005/03 National Space Development Agency (NASDA) Research Promotion Committee for Satellite Project on Greenhouse Gas Observation Technology, Member
- 2002/07 - 2005/03 National Space Development Agency (NASDA) Committee for GCOM-A1/OPUS, Member
- 1998/09 - 2003/09 National Space Development Agency (NASDA) SMILES Science Project, Invited Scientist
- 2002/04 - 2003/03 American Geophysical Union (AGU), Geophysical Research Letter (GRL) Editor Search Committee, Member
- 1998/04 - 2001/03 Communications Research Laboratory Visiting scientist
- 1991/04 - 2000/03 International Union of Geodesy and Geophysics (IUGG)- International Association of Meteorology and Atmospheric Sciences (IAMAS) International Commission on the Middle Atmosphere (ICMA) Member