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Tetsuya Hiyama is a Professor at the Institute for Space-Earth Environmental Research, Division for Land-Ocean Ecosystem Research, at Nagoya University, where he is also affiliated with the Graduate School of Environmental Studies. He earned his Ph.D. in Science from the University of Tsukuba in March 1995, with a focus on Geography and Hydrology. His academic career at Nagoya University began in 1995 as an Assistant at the Institute for Hydrospheric-Atmospheric Sciences, advancing through roles as Associate Professor at the Hydrospheric Atmospheric Research Center from 2002 to 2010 and Professor there from 2014 to 2015 before his current appointment in 2015.
Hiyama’s research centers on global warming, climate change, the global water and carbon cycles, permafrost, groundwater, and vulnerability, with particular emphasis on atmospheric-terrestrial water cycles in permafrost regions, greenhouse gas budgets in the Arctic, and socio-hydrological studies on spring discharges and groundwater sustainability. He has held leadership positions including Director in General at Nagoya University since 2022 and serves on numerous committees such as the Steering Committee of the Japan Consortium for Arctic Environmental Research, the Terrestrial Working Group of the International Arctic Science Committee, and various subcommittees of the Science Council of Japan. Professional memberships include the Japan Society of Hydrology and Water Resources (where he serves as Vice President and Director), the Japanese Society of Hydrological Sciences, the Japan Geoscience Union, and the American Geophysical Union. Awards include the Academic Award from the Japanese Society of Hydrological Sciences in 2024 and the Academic Publication Award from the Japan Society of Hydrology and Water Resources in 2016.
Nagoya University's ISEE team discovers a water vapor feedback chain linking Eurasian moisture, sea ice melt, and Arctic warming, with profound implications for global climate models.
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