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Ocean and Sea Ice Dynamics Lab
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A lab that explores how sea ice and ocean circulation work in Antarctica and the Sea of Okhotsk.
AboutAbout the lab
The ocean and climate, driven by sea ice.
The Ocean and Sea Ice Dynamics Unit studies ocean circulation and sea ice variability, focusing mainly on polar regions and seas with sea ice.
When sea ice forms, it produces heavy, cold water that drives circulation in the deep ocean.
In addition, sea ice reflects sunlight strongly, which amplifies climate variability and global warming.
The unit combines observations, satellite remote sensing, and numerical modeling in its research.
Key terms
- Antarctic Bottom Water
- Very cold, dense seawater produced when sea ice forms along the Antarctic coast. It spreads across the floor of the world's oceans.
- Remote sensing
- A method of measuring the state of oceans and ice in distant places using radio waves or light, for example from satellites.
- Ice shelf
- Thick ice that has been pushed out from the Antarctic ice sheet and extends over the sea, floating on the water.
NewsLab news
A researcher received the Oceanographic Society of Japan 2026 Encouragement Paper Award
A doctoral student's paper received the Matsuno Environmental Science Award
A doctoral student received the Oceanographic Society of Japan 2025 Encouragement Paper Award
ResearchResearch themes
Focusing mainly on polar regions and sea ice zones, the unit studies ocean circulation, water mass formation, sea ice variability, interactions between the ocean and ice shelves, and the role sea ice plays in the ocean, atmosphere, and climate. It integrates observations, remote sensing, and numerical modeling.
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MembersFaculty
The members of the Ocean and Sea Ice Dynamics Unit consist of faculty, secretaries and administrative assistants, postdoctoral researchers and JSPS fellows, and doctoral students.As of 2026
- Visiting ProfessorKeiichiro Ohshima
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images.
- Top image: “Mackenzie Bay, Antarctica ( )” NASA Goddard Space Flight Center from Greenbelt, MD, USA / Public domain (cropped)
- Sea Ice and Polar Ocean Circulation: “Sea Ice and Icebergs off East Antarctica” Jesse Allen and Robert Simmon / Public domain (cropped)
- Related lab (Arctic Research Unit Lab): “Calving Front of Kangerdlugssup Glacier” NASA/Michael Studinger / Public domain (cropped)
- Related lab (Ocean and Climate Physics Lab): “Spring Bloom Colors the Pacific Near Hokkaido” Norman Kuring / Public domain (cropped)
- Related lab (Pan-Okhotsk Observation Research Lab): “Swirls of Sea Ice approaching Hokkaido, Japan (MODIS )” MODIS Land Rapid Response Team, NASA GSFC / Public domain (cropped)
- Related lab (Volcanic Activity Lab): “Mount Usu from Shōwa-shinzan ( )” Hiroshi Nakai / CC BY 2.0 (cropped)
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