Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016GL072317 |
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
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
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 |
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/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 |
推荐引用方式 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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