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Fujiwara Lab
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A lab that studies how substances are transported in the atmosphere and climate change caused by volcanic eruptions.
AboutAbout the lab
The atmosphere, traced with balloons and observational data.
Prof. Fujiwara specializes in atmospheric science and studies how substances are transported through the atmosphere and climate change caused by volcanic eruptions.
Prof. Fujiwara has also worked on developing and evaluating observation instruments carried on rubber balloons, such as water vapor sondes and cloud particle sondes.
Internationally, the lab is deeply involved in activities to evaluate climate data and in research on observation networks for climate change.
Since 2022, the lab has also begun routine ozone layer observations in Sapporo.
Key terms
- Sonde
- An observation instrument flown on a balloon to measure upper-air temperature, water vapor, and other quantities
- Tropopause
- The boundary height between the troposphere, where weather changes occur, and the stratosphere above it
- Atmospheric reanalysis data
- Data that combine observations and models to reconstruct the past state of the atmosphere as a complete, consistent set
ResearchResearch themes
The lab's specialty is atmospheric science. Its research focuses on the transport processes of atmospheric substances, climate change caused by volcanic eruptions, and the development and evaluation of observation instruments carried on rubber balloons.
*Illustrative imageVolcanic Eruptions, Climate, and the Ozone Layer
This theme originated from an interest in climate engineering issues. Using the latest global atmospheric reanalysis data, the lab is reassessing climate change during large volcanic eruptions that occurred in the tropics in the past.
*Illustrative imageAsian Tropopause Aerosol Layer
Focusing on the circulation of the Asian summer monsoon, the lab studies the Asian Tropopause Aerosol Layer (ATAL) and the eddies that flow out eastward from it.
*Illustrative imageHow Substances Are Transported in the Upper Atmosphere
The lab studies how substances are transported from the upper troposphere to the lower stratosphere and how turbulence arises. Through ozone observations in Indonesia and international projects that Prof. Fujiwara has been involved in since graduate school, the lab has carried out many studies focused on the tropical tropopause region.
*Illustrative imageOzone Layer Observations in Sapporo
Since 2022, the lab has carried out routine ozone layer observations with Pandora and Brewer spectrophotometers on the roof of the Global Environment building at Hokkaido University in Sapporo.
MembersFaculty
- ProfessorMasatomo Fujiwara
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: “2020-11 Kerguelen Islands - Weather balloon 05” Antoine Lamielle / CC BY-SA 4.0 (cropped)
- Volcanic Eruptions, Climate, and the Ozone Layer: “Ash Plume over Australia (MODIS )” MODIS Land Rapid Response Team, NASA GSFC / Public domain (cropped)
- Asian Tropopause Aerosol Layer: “Northern India 17 Jun 2013” NASA, MODIS Rapid Response / Public domain (cropped)
- How Substances Are Transported in the Upper Atmosphere: “Top of Atmosphere” NASA Earth Observatory / Public domain (cropped)
- Ozone Layer Observations in Sapporo: “A cross-section of Earth's ozone layer” NASA/NOAA / Public domain (cropped)
- Related lab (Kawatani Lab): “Helkivad ööpilved Kuresoo kohal” Martin Koitmäe / CC BY-SA 4.0 (cropped)
- Related lab (Tanimoto Lab): “ISS-65 Indian Ocean sunglint” NASA / Public domain (cropped)
- Related lab (Horinochi Lab): “ISS-51 Moon, Earth's limb and the thin blue atmosphere” NASA / Public domain (cropped)
- Related lab (Atmospheric and Oceanic Physics Lab (Genta Mizuta)): “Global Sea Surface Currents and Temperature (hd video) ( )” NASA Goddard Space Flight Center from Greenbelt, MD, USA / Public domain (cropped)
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