PREDICTION OF AIR QUALITY OVER TOKYO METROPOLITAN AREA BY USING THE JCAP II AIR QUALITY SIMULATION SYSTEM

Air quality in Japan is getting improved, but some observational stations cannot meet the Japanese national air quality standard for some pollutants such as NO2 and PM. Additional strategies may be necessary to improve air quality further. In order to consider new regulations on emission sources, it is desirable to evaluate future potential effectiveness of them by conducting air quality simulations. However, currently no official procedure and modeling system for the evaluation of new regulations are available in Japan. Japan Clean Air Program (JCAP) II developed the air quality simulation system to satisfy such kind of needs. In this paper, outlines and results of the prediction of effectiveness of the new regulation on vehicle emissions by using the JCAP II air quality simulation system are presented.