DOI: 10.1016/j.atmosres.2017.07.027
Scopus记录号: 2-s2.0-85034097776
论文题名: Simulation of African dust properties and radiative effects during the 2015 SHADOW campaign in Senegal
作者: Péré J.-C. ; Rivellini L. ; Crumeyrolle S. ; Chiapello I. ; Minvielle F. ; Thieuleux F. ; Choël M. ; Popovici I.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 199 起始页码: 14
结束页码: 28
语种: 英语
英文关键词: Dust aerosols
; M'Bour
; Radiative forcing
Scopus关键词: Aerosols
; Atmospheric aerosols
; Atmospheric radiation
; Budget control
; Remote sensing
; Size distribution
; Aerosol size distributions
; Aerosols size distributions
; Atmospheric properties
; Dust aerosols
; M'Bour
; Radiative forcings
; Spatio-temporal variation
; Surface air temperatures
; Dust
; aerosol
; computer simulation
; dust
; numerical model
; optical property
; particle size
; radiative forcing
; remote sensing
; simulation
; Senegal
英文摘要: The aim of this work is to estimate optical and radiative properties of dust aerosols and their potential feedbacks on atmospheric properties over Western Africa for the period 20 March–28 April 2015, by using numerical simulations and different sets of remote-sensing and in-situ measurements. Comparisons of simulations made by the on-line coupled meteorological-chemistry model WRF-CHEM with MODIS, AERONET and in-situ observations result in a general agreement for the spatio-temporal variations of aerosol extinction at both local and regional scales. Simulated SSA reached elevated values between 0.88 and 0.96 along the visible/near-infrared in close agreement with AERONET inversions, suggesting the predominance of dust over Western Africa during this specific period. This predominance of dust is confirmed by in-situ measurements of the aerosol size distribution, fitting well with the aerosols size distribution simulated by WRF-CHEM. The impact of this large dust load on the radiative fluxes leads to large modifications of the shortwave and longwave radiative budget both at the ground and at the top of the atmosphere. In return, the response of the atmosphere to these dust-induced radiative changes is the alteration of the surface air temperature and wind fields, with non-negligible impact on the dust emission and transport. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109034
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Univ. Lille, CNRS, UMR 8518 - LOA - Laboratoire d'Optique Atmosphérique, Lille, F-59000, France; IMT Lille–Douai, Ecole Mines-Télécom, Département Sciences de l'Atmosphère et Génie de l'Environnement, 941 rue Charles Bourseul, Douai, 59508, France; Univ. Lille, CNRS, UMR 8516 - LASIR - Laboratoire de Spectrochimie Infrarouge et Raman, Lille, F-59000, France; Cimel Electronique, 172 Rue de Charonne, Paris, 75011, France
Recommended Citation:
Péré J.-C.,Rivellini L.,Crumeyrolle S.,et al. Simulation of African dust properties and radiative effects during the 2015 SHADOW campaign in Senegal[J]. Atmospheric Research,2018-01-01,199