Abstract
Ambient ozone and secondary aerosol components are formed via complex and nonlinear photochemical reactions. A three-dimensional regional air quality simulation, which combines a three-dimensional chemical transport model, a three-dimensional meteorology model, and a precursor emission inventory, is useful to consider effective strategies to reduce them. We have developed simulations for Japan, China, and India, and also over the entire South and East Asian countries. They have been applied to various analyses which aim at developing effective strategies. However, the performance of the current simulations on pollutant concentrations is not sufficient. Several issues remain regarding the emission inventory and models. It is expected that the simulations contribute to developing effective strategies to mitigate loads on the atmospheric environment including not only air pollution, but also climate change while remaining issues in the simulations are solved.
