气候变化领域集成服务门户(CCPortal): Drivers of severe air pollution events in a deep valley during wintertime: A case study from the Arve river valley, France

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DOI	10.1016/j.atmosenv.2020.118030
	Drivers of severe air pollution events in a deep valley during wintertime: A case study from the Arve river valley, France
	Quimbayo-Duarte J.; Chemel C.; Staquet C.; Troude F.; Arduini G.
发表日期	2021
ISSN	1352-2310
卷号	247
英文摘要	The Arve river valley airshed in the French Alps experiences particularly severe air pollution during wintertime stable atmospheric conditions associated with persistent cold-air pools. PM10 data recorded in the region indicate that the urbanised area of the central basin-shape section of the valley is generally the most polluted, with a harmful impact on the health of inhabitants. In the present work, we examine the air pollution transport potential of the Arve river valley airshed using results from high-resolution numerical simulations of a cold-air pool documented as part of the Passy-2015 field campaign. Passive tracers were used to model PM10 with emissions provided by a detailed inventory developed by the local air-quality agency. The observed differential in PM10 levels between valley sections was well captured by the numerical model and could not be explained solely by the differential in emissions. The stagnation, recirculation and ventilation potential of the airshed was evaluated spatially and temporally using integral quantities. The analysis indicated that the central basin-shape section of the valley is poorly ventilated and hence air pollution there would originate mostly from local emission sources. This stagnation zone appears to be almost decoupled from the rest of the airshed. The airshed was decomposed in separate valley sections so as to quantify the fate of the pollutants emitted within each section. Air pollution apportioned according to the contribution of emissions from the different valley sections shows that indeed the central basin-shape section is dominated by local sources. The situation was found more complex in the valley sections further downstream, where the contribution from the sum of the non-local sources can be as large as that from local sources. This study allows to identify the origin of the strong pollution in the Arve river valley, through the link between the local topography, emission sources and pollutant transport. © 2020 Elsevier Ltd
关键词	Mountain valley Numerical simulation Particulate air-pollution Wintertime
语种	英语
scopus关键词	Air quality; Atmospheric movements; Landforms; Numerical models; Rivers; Topography; Air pollution transport; Atmospheric conditions; Emission sources; High-resolution numerical simulation; Integral quantity; Local topography; Pollutant transport; Stagnation zones; River pollution; heavy metal; nitrogen oxide; polycyclic aromatic hydrocarbon; volatile organic compound; atmospheric pollution; field method; inventory; numerical model; spatiotemporal analysis; topography; ventilation; winter; air pollution; air quality; altitude; Article; boundary layer; cold air; comparative study; controlled study; forecasting; France; human; PM10 exposure; pollution transport; priority journal; seasonal variation; temperature measurement; thermal conductivity; topography; Alps; France
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/248601
作者单位	Université Grenoble Alpes, CNRS, LEGI, Grenoble, F-38000, France; National Centre for Atmospheric Science, Centre for Atmospheric and Instrumentation Research, University of Hertfordshire, College Lane, Hatfield, AL10 9AB, United Kingdom; 3 Allée des Sorbiers, Bron, 69500, France; European Centre for Medium-Range Weather ForecastsReading, United Kingdom
推荐引用方式 GB/T 7714	Quimbayo-Duarte J.,Chemel C.,Staquet C.,et al. Drivers of severe air pollution events in a deep valley during wintertime: A case study from the Arve river valley, France[J],2021,247.
APA	Quimbayo-Duarte J.,Chemel C.,Staquet C.,Troude F.,&Arduini G..(2021).Drivers of severe air pollution events in a deep valley during wintertime: A case study from the Arve river valley, France.ATMOSPHERIC ENVIRONMENT,247.
MLA	Quimbayo-Duarte J.,et al."Drivers of severe air pollution events in a deep valley during wintertime: A case study from the Arve river valley, France".ATMOSPHERIC ENVIRONMENT 247(2021).