Arid
DOI10.1029/1999JD900756
Determination of the wind speed threshold for the emission of desert dust using satellite remote sensing in the thermal infrared
Chomette, O; Legrand, M; Marticorena, B
通讯作者Chomette, O
来源期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年1999
卷号104期号:D24页码:31207-31215
英文摘要

The Infrared Difference Dust Index (IDDI), derived from images obtained from the Meteosat 10.5- to 12.5-mu m channel, describes the dust distribution over the Saharan-Sahelian region. This IDDI, associated with the 10-m wind speed reanalyses from the European Centre for Medium-Range Weather Forecasts (ECMWF), reveals whether or not the observed dust is associated with emission from an underlying source. This result allows one to determine the wind speed thresholds for dust emission from targets located in the western, central, and eastern Saharan-Sahelian region, by means of satellite remote sensing. Threshold values determined for seven targets are presented. A comparison is carried out between such values and direct determinations obtained through the description of the soil texture and surface roughness of these targets. The agreement between these quite independent determinations is conclusive, with an average difference of 0.3 m s(-1) and a rms difference of 0.35 m s(-1).


类型Article
语种英语
国家France
收录类别SCI-E
WOS记录号WOS:000084692900022
WOS关键词GENERAL-CIRCULATION MODEL ; SAHARAN-DUST ; OPTICAL-THICKNESS ; ATMOSPHERIC DUST ; WEST-AFRICA ; SIMULATIONS ; TRANSPORT ; RETRIEVAL ; AEROSOL ; CYCLE
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/2XILL650/137697
作者单位(1)Univ Lille 1, Opt Atmospher Lab, CNRS, UMR 8518, F-59655 Villeneuve Dascq, France;(2)Univ Paris 12, Lab Interuniv Syst Atmospher, CNRS, UMR 7583,Ctr Multidisciplinaire, F-94010 Creteil, France
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Chomette, O,Legrand, M,Marticorena, B. Determination of the wind speed threshold for the emission of desert dust using satellite remote sensing in the thermal infrared[J],1999,104(D24):31207-31215.
APA Chomette, O,Legrand, M,&Marticorena, B.(1999).Determination of the wind speed threshold for the emission of desert dust using satellite remote sensing in the thermal infrared.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,104(D24),31207-31215.
MLA Chomette, O,et al."Determination of the wind speed threshold for the emission of desert dust using satellite remote sensing in the thermal infrared".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 104.D24(1999):31207-31215.
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