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[C-1.3.1 Development of the Transport, Transformation and Removal Model for Acidic and Oxidative Pollutants in the East Asia(Final Report)]

[Contact Person]

Kentaro Murano
Senior Research Scientist
Global Environment Division
National Institute for Environmental Studies
16-2 Onogawa, Tsukuba, Ibaraki 305 Japan
Phone +81-298-50-2537, Fax +81-298-51-4732

[Total Budget for FY1993-1995]

46,069,000 Yen (FY1995; 14,821,000 Yen)

[Abstract]

　The spectral limited area model was nested within the grid model(FLM) used formerly by spectral boundary coupling method to gain higher spatial resolution over focused area while keeping wider model domain. Meteorological model was also improved to be able to output cloud water content in order to calculate the interaction process with pollutants. Based on these data set, the Long-range Transport Model(MRI-LTM) was improved including the additional interaction process between pollutants and cloud. A numerical simulation of transport and removal of sulfur oxides in the East Asian region was performed for whole year of 1985, and adequate results were obtained.
　3-D atmospheric transport model which includes chemical reactions, the STEM(Sulfate Transport Eulerian Model), was also applied to the east Asia region. The STEM model successfully simulated the typical time variation of observed concentrations. It was found that wind pattern variations associated with a synoptic scale pressure system are extremely important for the transport of pollutants.

[Key Words]

Numerical Model, Nesting, Sulfur Oxides, Transformation, Deposition