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Itsushi Uno Last modified date:2020.06.16

Professor / Research Institute for Applied Mechanics Global Environmental Dynamics
Division of Earth Environment Dynamics
Research Institute for Applied Mechanics

Graduate School
Undergraduate School
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Administration Post

 Reseacher Profiling Tool Kyushu University Pure
Home page of Atmospheric Dynamics Division of Research Institute for Applied Mechanics .
Academic Degree
Dr. Eng.
Country of degree conferring institution (Overseas)
Field of Specialization
Environmental Meteorology, Chemical Transport, Modeling
Total Priod of education and research career in the foreign country
Outline Activities
Applied and Ennviromental Meteorology
Research Interests
  • Asian scale meteorology and pollutant transport studies
    keyword : Chemical transport, Asia, Simulation
    1996.04NUmeircal Simulation of Regional Meteorology and Chemical Transport over Asia.
  • Asian dust emission and transport studies
    keyword : Yellow sand
    1998.04A Study on the Yellow Dust emission and transport over Asia.
  • Study on the atmospheric boundary layer structure based on meso-scale model
    keyword : meteorological model, atmospheric boundary layer
    1998.04~2002.03A study on the structure of Atmospheric Boundary Layer based on the regional meteorological model.
Academic Activities
1. Itsushi Uno, Zhe Wang, Syuichi Itahashi, Keiya Yumimoto, Yuki Yamamura, Ayako Yoshino, Akinori Takami, Masamitsu Hayasaki, Byung Gon Kim, Paradigm shift in aerosol chemical composition over regions downwind of China, Scientific reports, 10.1038/s41598-020-63592-6, 10, 1, 2021.04, A rapid decrease in PM2.5 concentrations in China has been observed in response to the enactment of strong emission control policies. From 2012 to 2017, total emissions of SO2 and NOx from China decreased by approximately 63% and 24%, respectively. Simultaneously, decreases in the PM2.5 concentration in Japan have been observed since 2014, and the proportion of stations that satisfy the PM2.5 environmental standard (daily, 35 µg/m3; annual average, 15 µg/m3) increased from 37.8% in fiscal year (FY) 2014 (April 2014 to March 2015) to 89.9% in FY 2017. However, the quantitative relationship between the PM2.5 improvement in China and the PM2.5 concentration in downwind regions is not well understood. Here, we (1) quantitatively evaluate the impacts of Chinese environmental improvements on downwind areas using source/receptor analysis with a chemical transport model, and (2) show that these rapid emissions reductions improved PM2.5 concentrations both in China and its downwind regions, but the difference between SO2 and NOx reduction rates led to greater production of nitrates (e.g., NH4NO3) due to a chemical imbalance in the ammonia–nitric acid–sulfuric acid–water system. Observations from a clean remote island in western Japan and numerical modeling confirmed this paradigm shift..
Membership in Academic Society
  • 学外
  • 学外
  • 学外
  • 学外
Educational Activities
Atmospheric Environment Modeling 1
Atmospheric Environment Modeling Seminar
Professional and Outreach Activities
Comittee member of photochemical Ox long term veriation of Ministry of Environment

Comittee member of acid deposition of Ministry of Environment.