GSTDTAP  > 地球科学
DOI10.5194/acp-19-473-2019
Diurnal cycle of coastal anthropogenic pollutant transport over southern West Africa during the DACCIWA campaign
Deroubaix, Adrien1,2,3; Menut, Laurent1; Flamant, Cyrille2,3; Brito, Joel11; Denjean, Cyrielle8; Dreiling, Volker9; Fink, Andreas7; Jambert, Corinne6; Kalthoff, Norbert7; Knippertz, Peter7; Ladkin, Russ10; Mailler, Sylvain1; Maranan, Marlon7; Pacifico, Federica6; Piguet, Bruno8; Siour, Guillaume4,5; Turquety, Solene1
2019-01-14
发表期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
EISSN1680-7324
出版年2019
卷号19期号:1页码:473-497
文章类型Article
语种英语
国家France; Germany; England
英文摘要

During the monsoon season, pollutants emitted by large coastal cities and biomass burning plumes originating from central Africa have complex transport pathways over southern West Africa (SWA). The Dynamics-Aerosol-Chemistry-Cloud Interactions in West Africa (DACCIWA) field campaign has provided numerous dynamical and chemical measurements in and around the super-site of Save in Benin (approximate to 185 km away from the coast), which allows quantification of the relative contribution of advected pollutants. Through the combination of in situ ground measurements with aircraft, radio-sounding, satellite, and high-resolution chemistry-transport modeling with the CHIMERE model, the source attribution and transport pathways of pollutants inland (here, NOx and CO) are carefully analyzed for the 1-7 July 2016 period. The relative contributions of different sources (i.e., emissions from several large coastal cities) to the air quality in Save are characterized. It is shown that a systematic diurnal cycle exists with high surface concentrations of pollutants from 18:00 to 22:00 UTC. This evening peak is attributed to pollution transport from the coastal city of Cotonou (Benin). Numerical model experiments indicate that the anthropogenic pollutants are accumulated during the day close to the coast and transported northward as soon as the daytime convection in the atmospheric boundary layer ceases after 16:00 UTC, reaching 8 degrees N at 21:00 UTC. When significant biomass burning pollutants are transported into continental SWA, they are mixed with anthropogenic pollutants along the coast during the day, and this mixture is then transported northward. At night, most of the coastal anthropogenic plumes are transported within the planetary boundary layer (below about 500m above ground level), whereas the biomass burning pollutants are mostly transported above it, thus generally not impacting ground level air quality.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000455904800002
WOS关键词CHEMISTRY-CLOUD INTERACTIONS ; MONSOON LAYER ; AIR-POLLUTION ; BLACK CARBON ; AEROSOL ; MODEL ; DYNAMICS ; REGION ; TROPOSPHERE ; EMISSIONS
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/26175
专题地球科学
作者单位1.UPMC Univ Paris 06, Sorbonne Univ,CNRS, Univ Paris Saclay,Lab Meteorol Dynam,LMD,IPSL, IPSL Res Univ,Ecole Normale Super,Ecole Polytech, Route Saclay, F-91128 Palaiseau, France;
2.Univ Paris Saclay, Sorbonne Univ, IPSL, LATMOS, Paris, France;
3.CNRS, Paris, France;
4.Univ Paris Est Creteil, CNRS, UMR 7583, LISA,IPSL, Creteil, France;
5.Univ Paris Diderot, Inst Pierre Simon Laplace, Creteil, France;
6.Univ Toulouse, UPS, CNRS, LA, Toulouse, France;
7.KIT, Inst Meteorol & Climate Res, Karlsruhe, Germany;
8.Meteo France, CNRS, UMR3589, CNRM, Toulouse, France;
9.Deutsch Zentrum Luft & Raumfahrt, DLR, Oberpfaffenhofen, Germany;
10.BAS, Cambridge, England;
11.Univ Clermont Auvergne, Lab Meteorol Phys, LAMP, Aubiere, France
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Deroubaix, Adrien,Menut, Laurent,Flamant, Cyrille,et al. Diurnal cycle of coastal anthropogenic pollutant transport over southern West Africa during the DACCIWA campaign[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(1):473-497.
APA Deroubaix, Adrien.,Menut, Laurent.,Flamant, Cyrille.,Brito, Joel.,Denjean, Cyrielle.,...&Turquety, Solene.(2019).Diurnal cycle of coastal anthropogenic pollutant transport over southern West Africa during the DACCIWA campaign.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(1),473-497.
MLA Deroubaix, Adrien,et al."Diurnal cycle of coastal anthropogenic pollutant transport over southern West Africa during the DACCIWA campaign".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.1(2019):473-497.
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