Abstract
Atmospheric environmental problems, including fine particle matters (PM2.5) and dispersion of radioactive materials, have generated significant public concerns over the last several years, and chemical transport models (CTM) are expected to contribute to the understanding and resolution of these problems. This review paper shows the previous studies and future directions of source apportionments and understanding of the behaviors of PM2.5, model inter-comparison, long-term analyses of nitrogen deposition, and behavior analyses of radioactive materials using CTM.