Born on May 11, 1951. B.Sc. in Geophysics at Kyoto University, 1975. M.Sc. in Geophysics at Kyoto University, 1977. D.Sc. in Geophysics at Kyoto University, 1980. Visiting Fellow at Southampton University, England from 1980 to 1981. Research Scientist, Lake Biwa Research Institute from 1983 to 2005. Research Director, Lake Biwa Environmental Research Institute from 2005 to 2012. Chair Professor at Ritsumeikan University from 2012.　Principal Researcher at Underwater Technology Center of the National Maritime Research Institute from 2014.
Overall Coordinator of BITEX 1993, in 1993. Editor-in-Chief of Limnology from 1999 to 2001. Japan Water Prize for Promotion in 2004. SIL Baldi Memorial Lecture Award in 2007. Associate Editor of the Inland Waters from 2011. Co-Chair of ASLO-Japan Aquatic Sciences Meeting in 2012. President of the Japanese Society of Limnology from 2012.
Books: “Lake Biwa is Breathing”. Kaimei-sha. 2015 (in Japanese). “Climatic Change and Global Warming of Inland Waters: Impacts and Mitigation for Ecosystems and Societies”. Wiley. 2013. “Limnology under Global Warming”. Kyoto University Academic Press. 2013 (in Japanese). Papers: “Time for in situ renaissance”. Science 349: 685-686, 2015.