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海洋環境及工程學系
亮點介紹 李宗霖老師以新的概念模式量化境外傳輸對高雄空氣污染

Transboundary transport of air pollution is a serious environmental concern as pollutant affects both human health and the environment. Many numerical approaches have been utilized to quantify the amounts of pollutants transported to receptor regions, based on emission inventories from possible source regions. However, sparse temporal–spatial observational data and uncertainty in emission inventories might make the transboundary transport contribution difficult to estimate. This study presents a conceptual quantitative approach that uses transport pathway classification in combination with curve fitting models to simulate an air pollutant concentration baseline for pollution background concentrations. This approach is used to investigate the transboundary transport contribution of atmospheric pollutants to a metropolitan area in the East Asian Pacific rim region. Trajectory analysis categorized pollution sources for the study area into three regions: East Asia, Southeast Asia, and Taiwan cities. The occurrence frequency and transboundary contribution results suggest the predominant source region is the East Asian continent. This study also presents an application to evaluate heavy pollution cases for health concerns. This new baseline construction model provides a useful tool for the study of the contribution of transboundary pollution delivered to receptors, especially for areas deficient in emission inventories and regulatory monitoring data for harmful air pollutants.

 

隨著亞洲經濟高度發展,化石燃料消耗量大增,使得工業污染物大量排放,加上區域性生質燃燒等影響,在政府及國民日益注重空氣品質的同時,了解境外空氣污染物長程傳輸對我國的衝擊越來越重要。因此,利用高雄海岸地區的實地採樣監測資料,以氣團逆軌跡路線分析為基礎,提出一種新的模式概念,來評估定量東亞環太平洋地區大氣污染物跨境傳輸的貢獻。其氣團軌跡分析結果將主要污染來源分類為東亞,東南亞和台灣城市三個區域。其中最主要的大氣跨境傳輸貢獻來自東亞地區,約佔35.6-55.6%;在高污染事件日,大氣跨境傳輸的貢獻則約佔50%;而冬季PAHs高濃度的現象推測與東亞地區冬季供暖活動有關。該研究以氣團逆軌跡路線為基礎架構的新模式提供了一個有用的工具,可以來評估大氣跨境傳輸污染對各受體地區的貢獻,特別適用於那些缺乏有害空氣污染物排放清單和定期監測數據的地區。因此得以於2016年發表於環境領域頂尖期刊Environment International (IF=5.929, 8/225=3.56% in Environmental Sciences)。

 

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