气候变化领域集成服务门户(CCPortal): Air quality and acid deposition impacts of local emissions and transboundary air pollution in Japan and South Korea

CCPortal

DOI	10.5194/acp-19-13309-2019
	Air quality and acid deposition impacts of local emissions and transboundary air pollution in Japan and South Korea
	Hung Lam Yim S.; Gu Y.; Shapiro M.A.; Stephens B.
发表日期	2019
ISSN	16807316
起始页码	13309
结束页码	13323
卷号	19 期号:20
英文摘要	Numerous studies have reported that ambient air pollution, which has both local and long-range sources, causes adverse impacts on the environment and human health. Previous studies have investigated the impacts of transboundary air pollution (TAP) in East Asia, albeit primarily through analyses of episodic events. In addition, it is useful to better understand the spatiotemporal variations in TAP and the resultant impact on the environment and human health. This study aimed at assessing and quantifying the air quality impacts in Japan and South Korea due to local emissions and TAP from sources in East Asia - one of the most polluted regions in the world. We applied state-of-thescience atmospheric models to simulate air quality in East Asia and then analyzed the air quality and acid deposition impacts of both local emissions and TAP sources in Japan and South Korea. Our results show that 30% of the annual average ambient PM2:5 concentrations in Japan and South Korea in 2010 were contributed to by local emissions within each country, while the remaining 70% were contributed to by TAP from other countries in the region. More detailed analyses also revealed that the local contribution was higher in the metropolises of Japan (40 %-79 %) and South Korea (31 %-55 %) and that minimal seasonal variations in surface PM2:5 occurred in Japan, whereas there was a relatively large variation in South Korea in the winter. Further, among all five studied anthropogenic emission sectors of China, the industrial sector represented the greatest contributor to annual surface PM2:5 concentrations in Japan and South Korea, followed by the residential and power generation sectors. Results also show that TAP's impact on acid deposition (SO2-4 and NO-3 ) was larger than TAP's impact on PM2:5 concentrations (accounting for over 80% of the total deposition), and that seasonal variations in acid deposition were similar for both Japan and South Korea (i.e., higher in both the winter and summer). Finally, wet deposition had a greater impact on mixed forests in Japan and savannas in South Korea. Given these significant impacts of TAP in the region, it is paramount that cross-national efforts should be taken to mitigate air pollution problems across East Asia. © Author(s) 2019.
语种	英语
scopus关键词	acid deposition; air quality; ambient air; atmospheric modeling; atmospheric pollution; emission inventory; long range transport; transboundary pollution; Far East; Japan; South Korea
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144067
作者单位	Department of Geography and Resource Management, Chinese University of Hong Kong, Sha Tin, Hong Kong; Stanley Ho Big Data Decision Analytics Research Centre, Chinese University of Hong Kong, Sha Tin, Hong Kong; Department of Social Sciences, Illinois Institute of Technology, Chicago, IL, United States; Department of Civil, Architectural and Environmental Engineering, Illinois Institute of Technology, Chicago, IL, United States
推荐引用方式 GB/T 7714	Hung Lam Yim S.,Gu Y.,Shapiro M.A.,et al. Air quality and acid deposition impacts of local emissions and transboundary air pollution in Japan and South Korea[J],2019,19(20).
APA	Hung Lam Yim S.,Gu Y.,Shapiro M.A.,&Stephens B..(2019).Air quality and acid deposition impacts of local emissions and transboundary air pollution in Japan and South Korea.Atmospheric Chemistry and Physics,19(20).
MLA	Hung Lam Yim S.,et al."Air quality and acid deposition impacts of local emissions and transboundary air pollution in Japan and South Korea".Atmospheric Chemistry and Physics 19.20(2019).