气候变化领域集成服务门户(CCPortal): An ensemble assessment of the effectiveness of vehicular emission control programs for air quality improvement in Hong Kong

CCPortal

DOI	10.1016/j.atmosenv.2021.118571
	An ensemble assessment of the effectiveness of vehicular emission control programs for air quality improvement in Hong Kong
	Li Y.; Xu H.X.; Tang K.Y.; Lau A.K.H.; Fung J.C.H.; Zhang X.G.
发表日期	2021
ISSN	1352-2310
卷号	262
英文摘要	Evaluation of applied emission control programs for ambient air quality improvement in the short term is important for timely policy adjustment and air quality protection. However, this is generally a non-trivial task because of the possible contribution of various factors, such as the regional background effect, meteorological impact, and other source impacts, which must be quantified and eliminated from the observed concentration changes. In this study, we developed an ensemble assessment approach employing multiple methods: spatiotemporal analysis, wind pollution decomposition (WPD) analysis, elemental carbon (EC)-WPD hybrid analysis, and air quality modelling. By combining these methods, we showed that the contributions of different factors could be resolved, and the combined results of all methods formed a consistent result clearly demonstrating that a significant reduction in NOx (112.4 ± 25.9 μg/m3 reduction), NO2 (31.5 ± 6.0 μg/m3 reduction), and PM10 and PM2.5 (reduced by 6.8 μg/m3 and 4.5 μg/m3, respectively) occurred due to the impact of the applied control programs. This study could serve as a springboard for future vehicular emission control strategies in Hong Kong in the near future. Moreover, this holistic analysis could also provide an independent method for estimating the emission control impact in other megacities. © 2021 Elsevier Ltd
关键词	CMAQ Diesel vehicles Ensemble assessment Wind pollution decomposition
语种	英语
scopus关键词	Emission control; Nitrogen oxides; Quality control; % reductions; Air quality improvement; CMAQ; Control program; Diesel vehicles; Emissions control; Ensemble assessment; Hong-kong; Vehicular emission; Wind pollution decomposition; Air quality
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248259
作者单位	Department of Ocean Science and Engineering, Southern University of Science and Technology, China; Center for the Oceanic and Atmospheric Science, Southern University of Science and Technology, China; Division of Environment and Sustainability, The Hong Kong University of Science & Technology, Hong Kong; Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong
推荐引用方式 GB/T 7714	Li Y.,Xu H.X.,Tang K.Y.,et al. An ensemble assessment of the effectiveness of vehicular emission control programs for air quality improvement in Hong Kong[J],2021,262.
APA	Li Y.,Xu H.X.,Tang K.Y.,Lau A.K.H.,Fung J.C.H.,&Zhang X.G..(2021).An ensemble assessment of the effectiveness of vehicular emission control programs for air quality improvement in Hong Kong.ATMOSPHERIC ENVIRONMENT,262.
MLA	Li Y.,et al."An ensemble assessment of the effectiveness of vehicular emission control programs for air quality improvement in Hong Kong".ATMOSPHERIC ENVIRONMENT 262(2021).