Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/2015JD023283 |
Lagrangian dust model simulations for a case of moist convective dust emission and transport in the western Sahara region during Fennec/LADUNEX | |
Sodemann, H.1,2; Lai, T. M.1; Marenco, F.; Ryder, C. L.3; Flamant, C.4,5; Knippertz, P.6,7; Rosenberg, P.7; Bart, M.7; McQuaid, J. B.7 | |
通讯作者 | Sodemann, H. |
来源期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2015 |
卷号 | 120期号:12页码:6117-6144 |
英文摘要 | Due to the harshness and inaccessibility of desert regions, the uncertainties concerning the processes of dust mobilization at the surface, airborne transport, and sedimentation are still considerable, limiting the ability to perform model simulations. In June 2011, a comprehensive data set of ground-based and airborne in situ measurements and remote sensing observations was acquired within the Fennec/Lagrangian Dust Source Inversion Experiment (LADUNEX) field campaign in the western Sahara region. Here we evaluate the ability of the state-of-the-art Lagrangian particle dispersion model FLEXPART, newly fitted with a dust mobilization capability, to simulate dust transport in this region. We investigate a case where a large mesoscale convective system (MCS) triggered dust emissions in central Mali, which subsequently moved as a large cold pool dust front toward northern Mauritania. Specifying dust mobilization for this case is shown to be an important obstacle to simulating dust transport during this event, since neither the MCS nor the associated cold pool-causing dust emission is represented in the meteorological analysis. Obtaining a realistic dust transport simulation for this case therefore requires an inversion approach using a manual specification of the dust sources supported by satellite imagery. When compared to in situ and remote sensing data from two aircraft, the Lagrangian dust transport simulations represent the overall shape and evolution of the dust plume well. While accumulation and coarse mode dust are well represented in the simulation, giant mode particles are considerably underestimated. Our results re-emphasize that dust emission associated with deep moist convection remains a key issue for reliable dust model simulations in northern Africa. |
英文关键词 | dust mobilization Lagrangian transport modeling airborne dust measurements |
类型 | Article |
语种 | 英语 |
国家 | Switzerland ; England ; France ; New Zealand |
收录类别 | SCI-E |
WOS记录号 | WOS:000357956800022 |
WOS关键词 | INTERTROPICAL DISCONTINUITY REGION ; AFRICAN MONSOON ; OPTICAL-PROPERTIES ; DIURNAL CYCLE ; MINERAL DUST ; AIRCRAFT OBSERVATIONS ; DEEP CONVECTION ; FENNEC CAMPAIGN ; BOUNDARY-LAYER ; CLIMATE MODELS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/188680 |
作者单位 | 1.ETH, Inst Atmosphere & Climate, Zurich, Switzerland; 2.Met Off, Observat Based Res, Exeter, Devon, England; 3.Univ Reading, Dept Meteorol, Reading, Berks, England; 4.Univ Paris 06, Sorbonne Univ, CNRS, Paris, France; 5.UVSQ, UMR8190, LATMOS, Paris, France; 6.Univ Leeds, Sch Earth & Environm, Leeds, W Yorkshire, England; 7.Aeroqual Ltd, Auckland, New Zealand |
推荐引用方式 GB/T 7714 | Sodemann, H.,Lai, T. M.,Marenco, F.,et al. Lagrangian dust model simulations for a case of moist convective dust emission and transport in the western Sahara region during Fennec/LADUNEX[J],2015,120(12):6117-6144. |
APA | Sodemann, H..,Lai, T. M..,Marenco, F..,Ryder, C. L..,Flamant, C..,...&McQuaid, J. B..(2015).Lagrangian dust model simulations for a case of moist convective dust emission and transport in the western Sahara region during Fennec/LADUNEX.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,120(12),6117-6144. |
MLA | Sodemann, H.,et al."Lagrangian dust model simulations for a case of moist convective dust emission and transport in the western Sahara region during Fennec/LADUNEX".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 120.12(2015):6117-6144. |
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