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Complex Systems Meteorology Lab
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A meteorology lab that investigates how typhoons and clouds work through numerical simulation.

AboutAbout the lab
Understanding typhoons through the mechanisms of clouds.
The Complex Systems Meteorology Lab is the lab of Professor Ryuji Yoshida, whose fields of research are meteorology and climatology.
The lab works to improve, using data from laboratory experiments, how the processes of cloud formation and dissipation are represented, since these play a major role in numerical typhoon simulation.
It also studies how the concentration of hygroscopic aerosols affects typhoons and develops seeding methods to weaken typhoons.
Professor Yoshida also holds a concurrent professorship at the Typhoon Science and Technology Research Center of the Institute of Advanced Sciences.
Key terms
- Cloud microphysical processes
- The processes that govern the formation and dissipation of clouds. They play an important role in numerical typhoon simulation.
NewsLab news
Professor Ryuji Yoshida contributed chapters to Zusetsu Taifu no Jiten (An Illustrated Encyclopedia of Typhoons)
Professor Ryuji Yoshida received the Outstanding Researcher Award from Yokohama National University
ResearchResearch themes
The lab works on research aimed at advancing numerical simulation for understanding, predicting, and controlling typhoons. It re-examines cloud processes using data from laboratory experiments and uses numerical simulation to study how aerosols affect typhoons.
*Illustrative imageImproving the Representation of Cloud Processes
Cloud microphysical processes, which govern the formation and dissipation of clouds, play a major role in numerical typhoon simulation. Based on data from laboratory experiments, the lab refines and improves the current calculation methods and the representation of moist processes.
*Illustrative imageHow Aerosols Affect Typhoons
The lab uses numerical simulation to study how typhoon behavior changes depending on the concentration of hygroscopic aerosols. It uses Typhoon Faxai in 2019 as a case study.
*Illustrative imageSeeding Methods to Weaken Typhoons
The lab is developing seeding methods to weaken typhoons. The work is based on laboratory experiments and numerical simulation experiments.
MembersFaculty
- ProfessorRyuji Yoshida
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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: “Super Typhoon Bavi (super-typhoon-bavi - 20260705)” NASA Earth Observatory/Michala Garrison / Public domain (cropped)
- Improving the Representation of Cloud Processes: “A large cloud formation with a small spiral at its center” Andywallxyz / CC BY 4.0 (cropped)
- How Aerosols Affect Typhoons: “Aerosol 1” Sciencia58 / CC0 (cropped)
- Seeding Methods to Weaken Typhoons: “Typhoon Haishen 2020248” NASA / Public domain (cropped)
- Related lab (Ecosystem Assessment Lab): “Alpine meadows, Grassland, Georgia” Vyacheslav Argenberg / CC BY 4.0 (cropped)
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- Related lab (Earth Dynamics Lab): “Folded Rock Provo Canyon” Kerk Phillips / Public domain (cropped)
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