气候变化领域集成服务门户(CCPortal): Comparison Between Eddy-Covariance and Flux-Gradient Size-Resolved Dust Fluxes During Wind Erosion Events

CCPortal

DOI	10.1029/2021JD034735
	Comparison Between Eddy-Covariance and Flux-Gradient Size-Resolved Dust Fluxes During Wind Erosion Events
	Dupont S.; Rajot J.-L.; Lamaud E.; Bergametti G.; Labiadh M.; Khalfallah B.; Bouet C.; Marticorena B.; Fernandes R.
发表日期	2021
ISSN	2169897X
卷号	126 期号:13
英文摘要	Estimating accurately dust emission flux during aeolian erosion events is crucial for quantifying the amount of dust in the atmosphere. The rare existing field experiments quantifying such flux were mainly performed using the flux-gradient (FG) method. Here, we present the first intercomparison of the size-resolved dust fluxes estimated by both the FG and the eddy-covariance (EC) methods during several erosion events. Both methods were applied simultaneously during the WIND-O-V (WIND erOsion in presence of sparse Vegetation)'s 2017 field experiment over an isolated erodible bare plot in South Tunisia. Overall, both methods predict similar dust fluxes for particle smaller than about 4 μm. For coarser particles, the EC method predicts a smaller dust flux than the FG method. Factors explaining this difference are discussed such as the different sampling heads used by the dust particle counters of both methods, or the possible weakening of the constant dust flux layer at the location of the upper dust particle counter of the FG method. This intercomparison highlights the difficulties and advantages of each method as well as their complementarity. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	dust flux; eddy-covariance; flux-gradient; wind erosion
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185119
作者单位	INRAE, Bordeaux Sciences Agro, ISPA, Villenave d'Ornon, France; iEES Paris (Institut d'Ecologie et des Sciences de l'Environnement de Paris), UMR IRD 242, Université Paris Est Créteil - Sorbonne Université - CNRS - INRAE - Université de Paris, Bondy, France; LISA (Laboratoire Interuniversitaire des Systèmes Atmosphériques), UMR CNRS 7583, Université Paris Est Créteil - Université de Paris, IPSL, Créteil, France; IRA-Médenine, Médenine, Tunisia
推荐引用方式 GB/T 7714	Dupont S.,Rajot J.-L.,Lamaud E.,et al. Comparison Between Eddy-Covariance and Flux-Gradient Size-Resolved Dust Fluxes During Wind Erosion Events[J],2021,126(13).
APA	Dupont S..,Rajot J.-L..,Lamaud E..,Bergametti G..,Labiadh M..,...&Fernandes R..(2021).Comparison Between Eddy-Covariance and Flux-Gradient Size-Resolved Dust Fluxes During Wind Erosion Events.Journal of Geophysical Research: Atmospheres,126(13).
MLA	Dupont S.,et al."Comparison Between Eddy-Covariance and Flux-Gradient Size-Resolved Dust Fluxes During Wind Erosion Events".Journal of Geophysical Research: Atmospheres 126.13(2021).