干旱区生态环境知识资源中心(Arid): Wet Deposition Fluxes of Mineral Dust and Their Relation With Cold Pools in the Central Sahel

Arid

DOI	10.1029/2021GL095005
	Wet Deposition Fluxes of Mineral Dust and Their Relation With Cold Pools in the Central Sahel
	Audoux, T.; Laurent, B.; Marticorena, B.; Bergametti, G.; Rajot, J. L.; Feron, A.; Gaimoz, C.
通讯作者	Audoux, T
来源期刊	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
EISSN	1944-8007
出版年	2022
卷号	49 期号:4
英文摘要	Based on a large number of in-situ measurements performed over a 9-years period in two Sahelian stations, we investigate the drivers of the dust wet deposition in relation to the meteorological situations and the PM10 (Particulate Matter with diameter lower than 10 mu m) surface concentrations. Precipitation associated with cold pools (CP) contribute to more than 90% of the precipitation amount associated with the collected wet deposition samples. The wet deposition events associated with these CP control by far the wet deposition, that is, 66% and 81%, depending on the station. The dust washout ratios (WR) corresponding to the most convective events under high level of dust concentrations were found to be in the range of 319-766 while WR of other kind of events are depending on the dilution effect. This range of value are in the lower range of WR previously estimated and used in dust modeling studies (200-2000). Plain Language Summary Mineral dust emitted in the atmosphere by wind erosion in arid and semi-arid areas have environmental impacts on the climate, human health and on bio-geochemical cycles. The atmospheric concentrations are controlled by both emission and deposition processes. In this study, we focus on the study of wet deposition of mineral dust in the Sahel semi-arid region. Long-term (9 years) measurements of dust concentrations, wet dust deposition and meteorological parameters in two Sahelian station of the INDAAF network (International Network to study Deposition and Atmospheric chemistry in Africa) are presented. Based on this data set, we investigated the cold pool meteorological situation associated to wet deposition of mineral dust.
类型	Article
语种	英语
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000765659300058
WOS关键词	WIND EROSION ; SIZE DISTRIBUTION ; SAHARAN DUST ; AFRICA ; PRECIPITATION ; TRANSPORT ; AEROSOLS ; PARTICULATE ; VARIABILITY ; ATMOSPHERE
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392947
推荐引用方式 GB/T 7714	Audoux, T.,Laurent, B.,Marticorena, B.,et al. Wet Deposition Fluxes of Mineral Dust and Their Relation With Cold Pools in the Central Sahel[J],2022,49(4).
APA	Audoux, T..,Laurent, B..,Marticorena, B..,Bergametti, G..,Rajot, J. L..,...&Gaimoz, C..(2022).Wet Deposition Fluxes of Mineral Dust and Their Relation With Cold Pools in the Central Sahel.GEOPHYSICAL RESEARCH LETTERS,49(4).
MLA	Audoux, T.,et al."Wet Deposition Fluxes of Mineral Dust and Their Relation With Cold Pools in the Central Sahel".GEOPHYSICAL RESEARCH LETTERS 49.4(2022).