亞洲大氣污染物之整合監測與其對環境及氣候之衝擊研究-7-SEAS-結合空污觀測與空品模式驗證大氣揮發性有機物作為光化學指標應用於PM2.5跨境移入現象探討(總計畫及子計畫三)

The island of Taiwan is unique in a way as an ideal downwind location in EastAsia to receive Asian continental outflow which inevitably affects the domestic airquality over the island under certain weather conditions. This proposal is a subprojectof the integrated project of 7-SEAS (Seven South East Asian Studies) toinvestigate regional pollution phenomena, e.g., Asian dust, biomass burning,China haze, etc. We propose to use satellite’s retrieved aerosol optical depth, theground-based air quality observations in northern Taiwan, as well as the hourlyobservations of organic pollutants provided by the network of PAMS(Photochemical Assessment Monitoring Stations) operated by Taiwan EPA incentral and northern Taiwan to determine the transboundary aerosol events. Theentire process of aerosol formation and transport of the continental outflow toTaiwan as a pollution receptor can be simulated by the numerical models ofeither IDEA-EA (Infusion satellite Data Into Application for East Asia) trajectoryanalysis or CMAQ-PAMS (The Community Multiscale Air Quality ModelingSystem for PAMS species) to facilitate understanding of the primary andsecondary processes. The model results are then used to validate theapplicability of using organic indexes as effective indicators for (1) the occurrenceof continental outflow and (2) transport and chemical evolution of organicpollutants in the outflow air masses.