气候变化领域集成服务门户(CCPortal): Mesoscale spatio-temporal variability of airborne lidar-derived aerosol properties in the Barbados region during EUREC4 A

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DOI	10.5194/acp-22-1271-2022
	Mesoscale spatio-temporal variability of airborne lidar-derived aerosol properties in the Barbados region during EUREC4 A
	Chazette, Patrick; Baron, Alexandre; Flamant, Cyrille
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	1271
结束页码	1292
卷号	22 期号:2 页码:22
英文摘要	From 23 January to 13 February 2020, 20 ATR-42 scientific flights were conducted in the framework of the EUREC4A field campaign over the tropical Atlantic, off the coast of Barbados (13 degrees 30' N, -58 degrees 30' W). By means of a sideway-pointing lidar, these flights allowed us to retrieve the optical properties of the aerosols found in the sub-cloud layer and below the trade wind inversion. Two distinct periods with significant aerosol contents were identified in relationship with the so-called trade wind and tropical regimes, respectively. For these two regimes, mixings of two air mass types encompassing dust and carbonaceous aerosols have been highlighted. Both were mainly from West Africa with similar optical contributions and linked to dust uptake above Sahara and biomass burning between Guinea-Bissau and Cote d'Ivoire. In the tropical transport regime, the wind within the planetary boundary layer is stronger and favours a contribution of marine aerosols (sulfate and sea salt aerosol components) in shallower aerosol layers than for the trade wind transport regime. The latter is responsible for advecting dust-biomass-burning-aerosol mixtures in the deeper, well-mixed layer, in part due to the complex interactions of the easterly flow from West Africa with mid-latitude dynamics. The aerosol vertical structures appear to be well reproduced using atmospheric composition reanalyses from CAMS when comparing with lidar-derived vertical profiles. The competition between the two types of transport regimes leads to strong heterogeneity in the optical properties of the horizontal aerosol field. Our study highlights the transport regime under which a significant mixture of dust and biomass burning aerosols from West Africa can be observed over the Caribbean and Barbados in particular, namely the trade wind regime.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000751159400001
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/273834
作者单位	UDICE-French Research Universities; Universite Paris Saclay; CEA; Centre National de la Recherche Scientifique (CNRS); UDICE-French Research Universities; Sorbonne Universite; Universite Paris Cite; Universite Paris Saclay; Centre National de la Recherche Scientifique (CNRS); CNRS - National Institute for Earth Sciences & Astronomy (INSU); Meteo France; University of La Reunion
推荐引用方式 GB/T 7714	Chazette, Patrick,Baron, Alexandre,Flamant, Cyrille. Mesoscale spatio-temporal variability of airborne lidar-derived aerosol properties in the Barbados region during EUREC4 A[J],2022,22(2):22.
APA	Chazette, Patrick,Baron, Alexandre,&Flamant, Cyrille.(2022).Mesoscale spatio-temporal variability of airborne lidar-derived aerosol properties in the Barbados region during EUREC4 A.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(2),22.
MLA	Chazette, Patrick,et al."Mesoscale spatio-temporal variability of airborne lidar-derived aerosol properties in the Barbados region during EUREC4 A".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.2(2022):22.