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Global Water Cycle Science Division, Oceanography Lab
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A lab that explores ocean currents and changes in marine life using satellites, numerical models, and shipboard observations.
AboutAbout the lab
Connecting ocean currents and marine life
The Oceanography Lab combines satellite data analysis and numerical simulation with oceanographic observations from ships.
Its research includes estimating primary production, coupled atmosphere–ocean–wave models, the relationship between oceanic wave motions and climate variability, and biological production in the western North Pacific.
The lab covers a wide range of ocean phenomena, from physics to biology, including their links to climate change and human activities.
It is a lab of the Institute for Space-Earth Environmental Research, and accepts graduate students as a cooperating division of the Department of Earth and Environmental Sciences, Graduate School of Environmental Studies.
Key terms
- Primary production
- The creation of organic matter by microscopic phytoplankton. That organic matter supports the lives of marine organisms.
- Phytoplankton
- Microscopic photosynthetic organisms that drift in the sea.
- Kelvin wave
- A type of ocean wave. Those in the equatorial region play an important role in tropical climate variability such as El Niño.
ResearchResearch themes
Combining satellite data analysis, ocean observation, and numerical simulation, the lab investigates ocean phenomena ranging from physics to biology. Its subjects include primary production by phytoplankton, the relationship between oceanic wave motions and climate variability, and coupled atmosphere–ocean–wave models.
*Illustrative imageEstimating Marine Primary Production from Satellites
Primary production in the ocean is carried out by microscopic phytoplankton, and is said to be about the same in scale as that on land. Because it is not easy to measure the vast ocean from ships alone, the lab develops methods to estimate primary production using satellites.
*Illustrative imageCoupled Atmosphere–Ocean–Wave Models
Combining knowledge from oceanography, meteorology, civil engineering, and other fields, the lab uses numerical simulation to study the mechanisms of phenomena related to the marine environment and disasters. It couples models of ocean surface waves (wind waves and swell) to atmosphere and ocean models, and works on their development and application.
*Illustrative imageOceanic Wave Motions and Climate Variability
The equatorial ocean is called a “treasure trove of wave phenomena,” and Kelvin waves and Rossby waves play important roles in tropical climate variability such as El Niño. Using satellite sea surface height data and three-dimensional ocean simulations, the lab examines the pathways by which various waves carry energy.
*Illustrative imageBiological Production in the Ocean and Transport of Organic Matter to the Deep
The lab studies the role that organisms play in the ocean's absorption of carbon dioxide. Through wide-ranging shipboard observations, experiments that moor observation and sampling instruments in the sea, and isotope analysis of organic matter, it investigates the mechanisms by which surface photosynthesis and the transport of organic matter to the deep ocean change in the western North Pacific.
MembersFaculty
The Oceanography Lab consists of faculty members, administrative assistants, and doctoral and master's students.As of 2024
- ProfessorHidenori Aiki
- Assistant ProfessorYoshihisa Mino
- Project ProfessorJoji Ishizaka
VoicesStudent voices
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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. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Infrared satellite image from the Pacífic Ocean” GOES Satellites / Public domain (cropped)
- Estimating Marine Primary Production from Satellites: “Phytoplankton bloom in the North Atlantic Ocean (MODIS )” Jeff Schmaltz, MODIS Land Rapid Response Team, NASA GSFC / Public domain (cropped)
- Coupled Atmosphere–Ocean–Wave Models: “Irminger-storm-waves (OOI 582)” Ocean Observatories Initiative / Public domain (cropped)
- Oceanic Wave Motions and Climate Variability: “Pacific Ocean, Kapa'a, Hawaii, USA, elevation approx. 20 meters (66 feed)” Butwhatdoiknow / CC0 (cropped)
- Biological Production in the Ocean and Transport of Organic Matter to the Deep: “NASA satellite view of Southern Ocean phytoplankton bloom (crop)” NASA Suomi NPP satellite / CC BY-SA 4.0 (cropped)
- Related lab (Behavioral Ecology Lab): “Seabird colony nests on the Oregon Coast ( )” BLM Oregon & Washington / Public domain (cropped)
- Related lab (Global Water Cycle Science Division, Hydroclimatology Lab): “Permafrost Polygons ( )” Western Arctic National Parklands / CC BY 2.0 (cropped)
- Related lab (Material Cycle Science Lab (Urumu Tsunogai)): “EA-IRMS, isotope ratio mass spectrometer with elemental analyzer for the determination of isotope ratios of stable isotopes in wines, spirits, honey and natural sweeteners, in CAFIA laboratory” Sarka Na kopci / CC BY-SA 4.0 (cropped)
- Related lab (Earth Water Cycle Science Division, Cloud and Precipitation Science Lab): “Ishigakijima meteorological radar 02” 人事院 / CC BY 4.0 (cropped)
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