Ocean and Sea Ice Dynamics Unit,
ILTS, Hokkaido University

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Research Topics

• Roles of sea ice in climate change: long-term by Antarctic and short-term by Arctic
• Global redistribution of heat, salt and materials induced by sea-ice processes
• Global mapping of sea ice production
• Multi-decadal variability of Oyashio Intermediate Water causing high biological productivity in the North Pacific.
• Japanese expedition identifies East Antarctic melting hotspot
• The climate chain reaction that threatens the heart of the Pacific
  The Washington Post
• Unraveling a major cause of sea ice retreat in the Arctic Ocean
  Spotlight on research
• Exploring of unknown Antarctic Bottom Water
• Modelling of sea ice and ocean interaction (CREST: Scale interaction and large scale variation of the ocean circulation)
• Change in the Sea of Okhotsk due to global warming -Weakening pump function to the North Pacific-
• Observations by profiling floats (collaboration with University of Washington)
• Investigation of the East Sakhalin Current
• Investigation of the Soya Warm Current
• Development of sea ice algorithm for satellite data (collaboration with NASA)
• Continuous measurement of sea ice thickness with high accuracy
• Melting of sea ice and ice/ocean albedo feedback
• Tidal currents and mixing in the Sea of Okhotsk

Ongoing project

• Creation of a global dataset and heat/salt budget of sea-ice production and melt using AMSR
  JAXA Project (2022-2025)
• Global redistribution of heat, salt and materials induced by sea-ice processes
  Grant-in-Aid for Scientific Research (S) (2020-2025)
• The Arctic Challenge for Sustainability II (ArCS II) (2020-2025)

Past projects

• Global mapping and monitoring of sea ice production
  Grant-in-Aid for Scientific Research (S) (2008-2013)
• Modelling of sea ice and ocean interaction
  JST CREST: Scale interaction and large-scale variation of the ocean circulation (2006-2012)
• Direct observations of unknown Antarctic Bottom Water and sea ice production/thickness by mooring system
  Japan Antarctic Research Expedition Research Project (2010-2013)
• Development of sea-ice thickness algorithm from PALSAR data, combined with in-situ observations and other satellite data
  JAXA ALOS Data Utilization Project (2007-2009)
• Development and improvement of ice thickness and ice concentration algorithm in the thin sea ice regions
  JAXA GCOM Research Project (2008-2011)

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