Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD028964 |
Size-Resolved Dry Deposition Velocities of Dust Particles: In Situ Measurements and Parameterizations Testing | |
Bergametti, G.1,2; Marticorena, B.1,2; Rajot, J. L.1,2,3,4; Foret, G.1,2; Alfaro, S. C.1,2; Laurent, B.1,2 | |
2018-10-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:19页码:11080-11099 |
文章类型 | Article |
语种 | 英语 |
国家 | France; Tunisia |
英文摘要 | Bulk and size-resolved particle concentrations were measured at 2.1 and 6.5 m above the soil surface during an intense dust deposition event that occurred in June 2006 in Niger. Bulk concentration measurements were performed using two tapered element oscillating microbalance instruments, and the size-resolved particle concentrations (from 0.3 to 20 mu m) using two optical particle counters. The deposition fluxes derived from the bulk concentrations and those derived from the size-resolved ones are in very good agreement. The largest deposition fluxes are recorded when the dust concentrations are maximal. The temporal evolution of the dust deposition flux follows that of the dust concentration. This is not the case of the dry deposition velocities that are most of the time controlled by the wind friction velocity. The results also show that large particles are strongly sensible to rebound when the wind friction velocity is the highest. Size-resolved dry deposition velocities are compared with the rare measurements of dust deposition velocities over bare sandy soils and are confronted to existing parameterizations of the dry deposition velocity. The parameterization of Zhang and Shao (2014, https://doi.org/10.5194/acp-14-12429-2014) appears to be the only one able to reproduce satisfyingly the measured dry deposition velocities on sandy soils in the 1-to 10-mu m particle size range. Indeed, unlike others, this scheme considers the desert sandy surfaces as rough surfaces, allowing the interception of dust particles by the sand grains and/or by the small roughness elements present on the surface. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000448374800018 |
WOS关键词 | SAHARAN-MINERAL-DUST ; DRAG PARTITION ; PROFILE RELATIONSHIPS ; WIND EROSION ; AEROSOL ; SURFACE ; ROUGHNESS ; TRANSPORT ; SCHEME ; STORMS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/33071 |
专题 | 气候变化 |
作者单位 | 1.Univ Paris Est Creteil, Lab Interuniv Syst Atmospher, CNRS, UMR 7583, Paris, France; 2.Univ Paris Diderot, Inst Pierre Simon Lapl, Paris, France; 3.Univ Paris Diderot, Inst Ecol & Sci Environm Paris, Univ Pierre & Marie Curie, INRA,Univ Paris Est Creteil,CNRS,UMR IRD 242, Paris, France; 4.Inst Reg Arides, Medenine, Tunisia |
推荐引用方式 GB/T 7714 | Bergametti, G.,Marticorena, B.,Rajot, J. L.,et al. Size-Resolved Dry Deposition Velocities of Dust Particles: In Situ Measurements and Parameterizations Testing[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(19):11080-11099. |
APA | Bergametti, G.,Marticorena, B.,Rajot, J. L.,Foret, G.,Alfaro, S. C.,&Laurent, B..(2018).Size-Resolved Dry Deposition Velocities of Dust Particles: In Situ Measurements and Parameterizations Testing.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(19),11080-11099. |
MLA | Bergametti, G.,et al."Size-Resolved Dry Deposition Velocities of Dust Particles: In Situ Measurements and Parameterizations Testing".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.19(2018):11080-11099. |
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