Quantifying PM2.5 from long-range transport and local pollution in Taiwan during winter monsoon: An efficient estimation method

Journal of Environmental Management
Ming-Tung ChuangHui-Chun Hsu

Abstract

From autumn to the following spring, annually, the northeast monsoon transports PM2.5 (particles less than 2.5 μm in aerodynamic diameter) from the Asian continent to downstream areas. Naturally, this triggered a question: What are the contributions of PM2.5 from long-range transport (LRT) and local pollution (LP) at any downstream location? To answer that question, the present study developed an economical and efficient method that can easily estimate the contribution of PM2.5 from LRT (LRT-PM2.5) and PM2.5 from LP (LP-PM2.5). The method used PM2.5 and meteorological observation data in Taiwan from 2006 to 2015 and a short-term simulation from January to May in 2010. The analysis classified the data into three types of PM2.5 source patterns: LRT-Event (high concentration plume at the front edge of southward moving anticyclones/strong northeast wind), LRT-Ordinary (less concentration in common strong northeast wind), and LRT/LP Mix or Pure LP (PM2.5 was from both LRT and LP or from only LP under weak northeast wind). During the ten-year period, the average LRT-PM2.5 values at the northern tip of Taiwan were 31-39 μg m-3, 12-16 μg m-3, and 4-13 μg m-3 for the LRT-Event, LRT-Ordinary, and LRT/LP Mix or Pure LP patterns, respectiv...Continue Reading

Citations

Jun 10, 2020·International Journal of Environmental Research and Public Health·Hong-Ren YuChen-Kuang Niu
Jan 24, 2021·Environmental Science and Pollution Research International·Lulu CuiYing Chen
Apr 7, 2020·Journal of Environmental Management·Liankui ZhangXianneng Li
Jun 22, 2019·Journal of Environmental Sciences (China)·Jinpei YanLiqi Chen
Jun 28, 2021·The Science of the Total Environment·Xiaoyang LiZeying Han

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