中国のエアロゾル濃度分布と排出源寄与率-全球化学輸送モデルによる推定

Abstract

Effect of aerosol particles on global warming, i. e. mainly cooling and, in certain situations, warming, is considered roughly in two aspects of “direct” and “indirect” influence on radiation balance in the atmosphere. Because of not simple relationships among nature of aerosol particle, such as size, chemical composition, etc., cloud microphysics, and atmospheric dynamical field, “correct” quantitative evaluation of the “indirect” effect is, in particular, difficult, and its result tends to have large uncertainty. To reduce this uncertainty partially, we are developing AGCTM (Aerosol Global scale Chemical Transport Model) which can explicitly describe source-receptor relations on various chemical species forming aerosol particles. By using the model, we have performed numerical simulation of transport/chemistry/deposition of aerosols and other chemical species during 20 Feb to 31 Mar in 2001 on the occasion of TRACE-P campaign. Performance of our AGCTM has been evaluated mainly by comparing the calculation results with TSP (Total Suspended Particulates) concentration at various observation sites all over China.