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Diurnal cycle of coastal anthropogenic pollutant transport over southern West Africa during the DACCIWA campaign

Deroubaix, Adrien; Menut, Laurent; Flamant, Cyrille; Brito, Joel; Denjean, Cyrielle; Dreiling, Volker; Fink, Andreas; Jambert, Corinne; Kalthoff, Norbert; Knippertz, Peter; Ladkin, Russ; Mailler, Sylvain; Maranan, Marlon; Pacifico, Federica; Piguet, Bruno; Siour, Guillaume; Turquety, Solène

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 Savè in Benin (≈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 Savè 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 ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000089992
Veröffentlicht am 01.02.2019
Seitenaufrufe: 23
seit 30.01.2019
Downloads: 13
seit 10.02.2019
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Forschungsbereich Troposphäre (IMK-TRO)
Publikationstyp Zeitschriftenaufsatz
Jahr 2019
Sprache Englisch
Identifikator ISSN: 1680-7324
KITopen-ID: 1000089992
HGF-Programm 12.01.02 (POF III, LK 01)
Erschienen in Atmospheric chemistry and physics
Band 19
Heft 1
Seiten 473–497
Vorab online veröffentlicht am 14.01.2019
Nachgewiesen in Web of Science
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