GSTDTAP  > 气候变化
DOI10.1002/2016GL072317
Influence of dry-season vegetation variability on Sahelian dust during 2002-2015
Kergoat, L.1; Guichard, F.2,3; Pierre, C.1,4; Vassal, C.1
2017-05-28
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2017
卷号44期号:10
文章类型Article
语种英语
国家France
英文摘要

The drivers of dust emission interannual variability in North Africa, the largest dust source on Earth, are still debated. Early studies outlined the role of previous-season rainfall and vegetation growth, while some recent studies emphasize the role of wind variability. Here we use a newly developed estimation of dry-season nonphotosynthetic vegetation cover in the Sahel based on Moderate Resolution Imaging Spectroradiometer (MODIS) short-wave infrared bands over the 2002-2015 period. The vegetation growth anomalies caused by variability of rainfall in June-September translate to anomalies of dry vegetation cover that persist throughout the dry season until May. These vegetation anomalies explain 43% (50%) of the year-to-year variance in Sahelian-mean dry-season aerosol optical depth (AOD) as derived from MODIS Deep Blue (Sun photometers). Similar explained variance is found with 10 m wind speed and dust uplift potential. The central Sahel proves more important than the western Sahel for dry-season AOD variability.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000404131900100
WOS关键词WIND-EROSION ; AFRICAN DUST ; TRANSPORT ; EMISSION ; ATLANTIC ; COVER ; FIELD ; SOIL ; CLIMATE ; AEROSOL
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/28444
专题气候变化
作者单位1.Univ Toulouse, Geosci Environm Toulouse, CNRS IRD, Toulouse, France;
2.CNRS, CNRM, UMR 3589, Toulouse, France;
3.Meteo France, Toulouse, France;
4.Univ Paris 12, CNRS, LISA, Creteil, France
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GB/T 7714
Kergoat, L.,Guichard, F.,Pierre, C.,et al. Influence of dry-season vegetation variability on Sahelian dust during 2002-2015[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(10).
APA Kergoat, L.,Guichard, F.,Pierre, C.,&Vassal, C..(2017).Influence of dry-season vegetation variability on Sahelian dust during 2002-2015.GEOPHYSICAL RESEARCH LETTERS,44(10).
MLA Kergoat, L.,et al."Influence of dry-season vegetation variability on Sahelian dust during 2002-2015".GEOPHYSICAL RESEARCH LETTERS 44.10(2017).
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