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Atmospheric Radiation Lab
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A lab that studies clouds and aerosols using satellite-borne radar and lidar, with a focus on atmospheric radiation.

AboutAbout the lab
Unraveling clouds and radiation through the eyes of satellites.
The Atmospheric Radiation Lab investigates the properties of clouds and atmospheric particles using observations from radar and lidar carried on satellites.
Using data from active sensors such as millimeter-wave Doppler radar and high-resolution lidar, including the Japan-Europe joint satellite mission EarthCARE, the lab develops analysis techniques that extract the three-dimensional distribution of clouds and their radiative properties.
The lab's website is that of the Atmospheric Physics Lab in the Earth Environmental Dynamics Division, and the Atmospheric Radiation Lab is listed on its members page.
Key terms
- EarthCARE
- A Japan-Europe joint satellite mission. It observes clouds, aerosols, and radiation using four types of instruments, including a cloud radar and a lidar
- Lidar
- An observation instrument that uses laser light. It can provide information on aerosols and other targets at different altitudes
- Aerosol
- Fine particles suspended in the atmosphere. They have both human-made and natural origins, and are involved in cloud formation and precipitation efficiency
ResearchResearch themes
Clouds strongly affect the Earth's energy and water budgets, yet they are regarded as the largest source of uncertainty in climate prediction. The lab's website describes research that investigates the physical properties of clouds and aerosols using radar and lidar observation data from satellites.
*Illustrative imageCloud Research with Satellite Radar and Lidar
The lab analyzes cloud radar and lidar observation data from satellites, ground stations, and ships to determine cloud height, the size of cloud and ice particles, and liquid and ice water content. It also works on promoting the Japan-Europe jointly proposed EarthCARE satellite and on developing its own analysis methods and new observation instruments.
*Illustrative imageGlobal Aerosol Distribution Seen by Lidar
Focusing mainly on the analysis of satellite-borne lidar, the lab studies the global distribution of aerosols and their physical properties. Aerosols directly affect the Earth's radiation budget and are also involved in cloud formation and precipitation efficiency.
MembersFaculty
The members page lists faculty members, academic researchers, administrative assistants, and master's students from the Atmospheric Physics, Atmospheric Dynamics, and Atmospheric Radiation labs combined.
- Associate ProfessorKaori Sato
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: “EarthCARE solar wing deployed ESA24376876” European Space Agency / CC BY-SA 3.0 igo (cropped)
- Cloud Research with Satellite Radar and Lidar: “CloudSat at Vandenberg AFB” NASA / Public domain (cropped)
- Global Aerosol Distribution Seen by Lidar: “Lidar-IGF-UW-2024 AB-02” Chepry 💬 (Andrzej Barabasz) 📷 🇵🇱 / CC BY-SA 4.0 (cropped)
- Related lab (大気物理分野): “Iridescent clouds during snowfall 1” W.carter / CC BY-SA 4.0 (cropped)
- Related lab (大気環境モデリング分野): “Measuring PM2.5 air pollution from a burning roadside garbage dump at Bhiwandi near Mumbai” Sumaira Abdulali / CC BY-SA 4.0 (cropped)
- Related lab (大気海洋相互作用分野): “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)
- Related lab (海洋リモートセンシング分野): “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)
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