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Ocean Remote Sensing Lab
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The lab investigates ocean variability using observational data from satellites and ships.
AboutAbout the lab
Capturing ocean variability with satellite and in situ observations.
The Ocean Remote Sensing Lab investigates ocean variability by analyzing in situ observational data from ships and drifting buoys together with satellite observations.
The vast ocean has a major impact on the global environment through phenomena such as El Niño and global warming, but much of its actual state remains unknown even today.
Aiming to discover new facts from observational data, the lab studies the role the ocean plays in global environmental variability.
The lab's website is shared with the lab seminar of Professor Hiroki Tokinaga in the same Global Environmental Dynamics Division, and is presented under the name "Ocean Environmental Physics".
Key terms
- Mesoscale eddy
- An ocean eddy about the size of Hokkaido or Kyushu. It moves slowly westward and disperses the material around it
- Kuroshio
- One of the world's strongest ocean currents. It carries an enormous volume of seawater from south to north and plays an important role in redistributing heat in the North Pacific
- Sea surface altimeter
- An instrument mounted on a satellite to measure the height of the sea surface. Ocean currents can be derived from the distribution of heights
ResearchResearch themes
The vast ocean has a major impact on the global environment through El Niño, global warming, and other phenomena, but much of its actual state remains unknown. This lab analyzes in situ observations from ships and drifting buoys together with satellite observational data to investigate the characteristics of ocean variability and the role the ocean plays in global environmental change.
*Illustrative imageIntegrating Satellite and In Situ Observational Data
In situ observations are limited in time and place, while satellites can measure wide areas but their measurements are limited to the surface layer or are indirect. The lab studies methods that integrate the two, such as combining drifting buoy trajectories with sea surface height data from altimeters.
*Illustrative imageKuroshio Volume Transport and Heat Transport
In collaboration with research institutions in Japan and abroad, the lab conducts in situ observations using ships and moorings along observation lines crossing the Kuroshio. By integrating these data with satellite data, it evaluates how heat and water are transported in the North Pacific, and also investigates the factors that cause the Kuroshio to vary.
*Illustrative imageEffects of Mesoscale Eddies on Surrounding Waters
Much of the variability in the ocean surface layer propagates slowly westward as mesoscale eddies. Using satellite data, the lab estimates the effects that eddies have on areas such as Japan's coastal waters and clarifies how they propagate and where they originate, aiming to contribute to long-term ocean condition forecasts.
*Illustrative imageDeveloping Observation Methods for Coastal Use
The lab is also involved in developing observation methods that are effective in coastal areas and marginal seas. These include a new type of altimeter that measures over an area, sea surface height measurement using GPS, and a sea state observation system using GNSS reflected signals.
MembersFaculty
The members page introduces faculty, secretaries, and doctoral and master's students in a single list.
- Associate ProfessorKaoru Ichikawa
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: “Exploring High-Resolution Sea Surface Height Data from NASA’s SWOT Satellite (SVS5538 - 8k 04550)” NASA's Scientific Visualization Studio - USRA/Kel Elkins, NASA/JPL/Matt Archer, NASA/JPL/Jane Lee / Public domain (cropped)
- Integrating Satellite and In Situ Observational Data: “Open-cell and closed-cell clouds, Pacific Ocean (MODIS )” Jeff Schmaltz, MODIS Land Rapid Response Team, NASA GSFC / Public domain (cropped)
- Kuroshio Volume Transport and Heat Transport: “Kuroshio Temperature” Liu, J.Y. / CC BY 4.0 (cropped)
- Effects of Mesoscale Eddies on Surrounding Waters: “NASA satellite view of Southern Ocean phytoplankton bloom (crop)” NASA Suomi NPP satellite / CC BY-SA 4.0 (cropped)
- Developing Observation Methods for Coastal Use: “Mise en oeuvre de la CTD rosette ou bathysonde (Ifremer )” Stephane Lesbats / CC BY 4.0 (cropped)
- Related lab (Atmospheric Physics Lab): “Iridescent clouds during snowfall 1” W.carter / CC BY-SA 4.0 (cropped)
- Related lab (Ocean Dynamics Analysis Lab): “Eastchina and Eastchina Sea tmo 2017313 lrg” NASA Earth Observatory image by Jesse Allen, using data from the Level 1 and Atmospheres Active Distribution System (LAADS). Story by Adam Voiland, with information from Zhifa Luo (East China Normal University). / Public domain (cropped)
- Related lab (Atmospheric Dynamics Lab): “Venus Cloud Tops ( )” Credit: L. Esposito (University of Colorado, Boulder), and NASA / Public domain (cropped)
- Related lab (Atmosphere-Ocean Interaction Lab): “20190907 STACKED global warming stripes (large legends) - derived from Ed Hawkins” Ed Hawkins, climate scientist at University of Reading, is creator of the original image of which the present image is derived. / CC BY-SA 4.0 (cropped)
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