Impact of different transport mechanisms of Asian dust and anthropogenic pollutants to Taiwan

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Title:	Impact of different transport mechanisms of Asian dust and anthropogenic pollutants to Taiwan
Authors:	李崇德;Lin, Chuan-Yao;Chou, Charles C.K.;Wang, Zifa;Lung, Shih-Chun;Lee, Chung-Te;Yuan, Chung-Shin;Chen, Wei-Nai;Chang, Shih-Yu;Hsu, Shih-Chieh;Chen, Wan-Ching;Liu, Shaw Chen
Contributors:	環境監測技術聯合中心
Keywords:	Aerosols;air;air quality;anthropogenic activities;Anthropogenic pollutants;Applied sciences;Asian;Asian dust;atmospheric chemistry;Atmospheric pollution;Atmospherics;Boundaries;Drying;Dust;Exact sciences and technology;Long-range transport;Marine;Modeling;Pollutants;Pollutants physicochemistry study: properties, effects, reactions, transport and distribution;Pollution;Taiwan;Transport
Date:	2012-12-01
Issue Date:	2026-04-23 15:05:54 (UTC+8)
Publisher:	Elsevier Ltd.;Kidlington: Elsevier Ltd
Abstract:	摘要： The impacts of long-range transport of Asian dust and anthropogenic air pollutants to Taiwan are strongly associated with the atmospheric conditions and paths of transport. In this study, we identified 16 significant dust events (daily mean mass concentration ≥ 120 μg m−3) to Taiwan from 2002 to 2008. To investigate transport characteristics associated with long-range transport of Asian dust and anthropogenic air pollutants to Taiwan, significant dust events were further classified into dry (12 cases) and wet (4 cases) types according to atmospheric conditions. We found that the major transport paths for the dry type (DT) dust cases passed through anthropogenic source areas in the low boundary while the major paths for the wet type (WT) dust cases passed over the ocean. After mineral dust, which occupied around 32% of total PM10 mass concentration, anthropogenic ionic pollutants was the second major contributor and occupied 19–22% at three sampling stations in Taiwan for DT cases. In the fine particle, the anthropogenic ionic pollutants contributed from 29 to 36% to PM2.5, making it the major contributor. The two most significant cases, one from the DT and one from the WT cases, were selected to study transport mechanisms with the NAQPMS air quality model. Simulation results also suggest that transport paths and boundary atmospheric conditions play important roles in aerosol compositions. ► We identify 16 significant Asian dust events to Taiwan from 2002 to 2008. ► We further classified into dry and wet types according to atmospheric conditions. ► Mean mass fractions of major aerosol species in the PM10 and PM2.5 were discussed. ► Meteorological and air quality models were employed to study the transport mechanism. 出版者： Kidlington: Elsevier Ltd 出版日期： 2012-12-01 出處： Atmospheric environment (1994), 2012-12, Vol.60, p.403-418 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2012 Elsevier Ltd 版權： 2014 INIST-CNRS 識別號： ISSN: 1352-2310 識別號： EISSN: 1873-2844 識別號： DOI: 10.1016/j.atmosenv.2012.06.049
Appears in Collections:	[Center for Environmental Monitoring and Technology] journal & Dissertation

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