Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL084872 |
Sahelian Precipitation Change Induced by SST Increase: The Contrasting Roles of Regional and Larger-Scale Drivers | |
Dixon, Ross D.1,2; Peyrille, Philippe1,2; Guichard, Francoise1,2 | |
2019-10-23 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | France |
英文摘要 | Representing the West African Monsoon is a major challenge in climate modeling because of complex mechanisms of interaction across scales. We study the monsoon precipitation response to a 4K increase in sea surface temperatures using an idealized meridional-vertical (2D) model, which allows separating regional- and larger-scale influences. The 2D simulations reproduce key features of Atmospheric Model Intercomparison Project simulations and indicate that, in response to sea surface temperature increase, large-scale changes induce a decrease of Sahel precipitation, while regional-scale mechanisms generate a southward shift of the rainband. Large-scale changes moisten and warm the free troposphere, while regional circulation changes increase low-level moisture. Precipitation in the control simulations accounts for much of the variance in precipitation change for both Atmospheric Model Intercomparison Project and 2D simulations. This response is strongly connected to the large-scale drivers of temperature and moisture, with an additional spread associated with the formulation of the convective parameterization. |
英文关键词 | West Africa monsoon climate change Sahel precipitation modeling |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000491923500001 |
WOS关键词 | WEST-AFRICAN MONSOON ; IDEALIZED 2-DIMENSIONAL FRAMEWORK ; RAINFALL ; VARIABILITY ; CIRCULATION ; PROJECTIONS ; CMIP5 ; MODEL ; KEY |
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/187764 |
专题 | 气候变化 |
作者单位 | 1.Ctr Natl Rech Meteorol, CNRS, UMR 3589, Toulouse, France; 2.Meteo France, Toulouse, France |
推荐引用方式 GB/T 7714 | Dixon, Ross D.,Peyrille, Philippe,Guichard, Francoise. Sahelian Precipitation Change Induced by SST Increase: The Contrasting Roles of Regional and Larger-Scale Drivers[J]. GEOPHYSICAL RESEARCH LETTERS,2019. |
APA | Dixon, Ross D.,Peyrille, Philippe,&Guichard, Francoise.(2019).Sahelian Precipitation Change Induced by SST Increase: The Contrasting Roles of Regional and Larger-Scale Drivers.GEOPHYSICAL RESEARCH LETTERS. |
MLA | Dixon, Ross D.,et al."Sahelian Precipitation Change Induced by SST Increase: The Contrasting Roles of Regional and Larger-Scale Drivers".GEOPHYSICAL RESEARCH LETTERS (2019). |
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