Numerical Study of Tropospheric Ozone in the Springtime in East Asia

  • Meigen Zhang
  • Itsushi Uno
  • Zifa Wang
  • Hajime Akimoto


A regional three-dimension chemical transport model called the Models-3 Community Multi-scale Air Quality modeling system with meteorological fields from the Regional Atmospheric Modeling System is used to study the transport and photochemical transformation of tropospheric ozone over East Asia for March of 1998. The model calculated mixing ratios of ozone and carbon monoxide were compared with ground level observations in Japan and were found the model reproduces observations very well. In comparison with available ozonesonde data, we found the model calculated ozone concentrations at upper model layers are in good agreement with measurements. Numerical study showed that the model reproduces photochemical ozone production reasonably well and simulates the influence of emissions from the continental boundary layer that was evident in the ground-level observations of ozone and carbon monoxide very well. The ozone budget analysis indicates that the transport processes may play more important roles than photochemical factors in determining surface ozone concentrations, and the supply and loss of boundary layer ozone is dominated by photochemistry.


Ozone Concentration Potential Vorticity Tropospheric Ozone Surface Ozone Regional Atmospheric Modeling System 
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© Kluwer Academic Publishers 2004

Authors and Affiliations

  • Meigen Zhang
  • Itsushi Uno
  • Zifa Wang
  • Hajime Akimoto
    • 1
  1. 1.Frontier Research System for Global ChangeKanagawaJapan

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