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Horinochi Lab
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A lab that studies weather and climate, from typhoons to the atmosphere of Venus.

AboutAbout the lab
Diverse atmospheric phenomena and their role in climate.
The Horinochi Lab studies atmospheric phenomena across a range of time scales and how they relate to climate.
Through numerical simulation and analysis of observational data, it seeks reliable knowledge about weather and climate.
Its subjects range widely, from typhoons and East Asian precipitation to the atmosphere of Venus.
Graduate education is provided across the whole Atmospheric and Oceanic Physics and Climate Dynamics course.
Key terms
- Numerical simulation
- A method of solving the equations that describe atmospheric motion on a computer in order to reproduce phenomena or run experiments
- Intraseasonal oscillation
- A large-scale phenomenon that travels around the tropics along the equator with a period of one to two months, changing clouds and rainfall
- Superrotation
- A phenomenon in the atmosphere of Venus in which east-west winds tens of times faster than the planet's rotation circulate around the entire planet
NewsLab news
A master's student received a presentation award from the Hokkaido Branch of the Meteorological Society of Japan
Prof. Horinochi received the 2026 Meteorological Society of Japan Award
ResearchResearch themes
The lab studies weather and climate from the viewpoint of dynamics. It has mainly studied the tropical atmosphere, but recently it has also put effort into mid-latitude research, centered on the Asia-Pacific region.
*Illustrative imageObserving and Understanding Typhoons
Working with many researchers, the lab uses typhoon observations made possible by Himawari-8 together with numerical simulation, aiming to bring innovation to the understanding of typhoons and to the characterization of their intensity and structure.
*Illustrative imageRain and Water Transport in East Asia
The lab investigates the sources of the water that brings rain during the Baiu (early summer rainy season) and the autumn rain season, and the differences in the weather disturbances that carry that water. It also studies how the tropical intraseasonal oscillation affects precipitation in East Asia.
*Illustrative imageStudying the Atmosphere of Venus
The atmosphere of Venus has east-west winds (superrotation) that blow tens of times faster than the planet's rotation. To approach the cause of this through observation, the lab developed a method to determine wind speed from cloud motion, and works on deriving wind speeds from the Venus orbiter Akatsuki and on atmospheric dynamics.
MembersFaculty
The Horinochi Lab's members include faculty, postdoctoral researchers, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorTakeshi Horinochi
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: “ISS-51 Moon, Earth's limb and the thin blue atmosphere” NASA / Public domain (cropped)
- Observing and Understanding Typhoons: “Typhoon Jebi in the Northwest Pacific Ocean (MODIS )” MODIS Land Rapid Response Team, NASA GSFC / Public domain (cropped)
- Rain and Water Transport in East Asia: “Thunderstorms over Colorado ( )” Ken Lund from Reno, Nevada, USA / CC BY-SA 2.0 (cropped)
- Studying the Atmosphere of Venus: “PIA00111 Venus Colorized Clouds” NASA/JPL / Public domain (cropped)
- Related lab (Tanimoto Lab): “ISS-65 Indian Ocean sunglint” NASA / 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 (Kawatani Lab): “Helkivad ööpilved Kuresoo kohal” Martin Koitmäe / CC BY-SA 4.0 (cropped)
- Related lab (Biological and Organic Geochemistry Lab): “Misc pollen colorized” Dartmouth Electron Microscope Facility, Dartmouth College / Public domain (cropped)
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