Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL084441 |
The Presence of Africa and Limited Soil Moisture Contribute to Future Drying of South America | |
Pietschnig, M.1; Lambert, F. H.1; Saint-Lu, M.2; Vallis, G. K.1 | |
2019-11-12 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:21页码:12445-12453 |
文章类型 | Article |
语种 | 英语 |
国家 | England; France |
英文摘要 | Over oceans, precipitation generally increases with warming in regions where preindustrial precipitation minus evaporation is positive. This simple "wet-get-wetter" principle does not hold over land. The Amazon region and Equatorial Africa currently receive ample rainfall, but the former is projected to dry out whereas precipitation is expected to increase over the latter. Our experiments with an idealized Atmospheric General Circulation Model and realistic continents show that land surface evaporation must be limited in order to obtain drying over the Amazon basin. Our simulations with rectangular, flat continents reveal that large parts of South America would receive more rainfall with warming in the absence of Africa. We suggest that this is due to a warming-induced Matsuno-Gill-type circulation anomaly over Africa. We propose a new simple scaling that diagnoses precipitation change from surface relative humidity change and provides further evidence for the importance of circulation changes for future rainfall. |
英文关键词 | tropical precipitation change global warming Amazon basin simple scaling atmospheric circulation Matsuno-Gill |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000495899800001 |
WOS关键词 | HYDROLOGICAL CYCLE ; HUMIDITY ; DYNAMICS ; MODEL ; LAND ; ATMOSPHERES ; FRAMEWORK ; CLIMATE ; SHIFTS ; CMIP5 |
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/225002 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Univ Exeter, Dept Math, Exeter, Devon, England; 2.Univ Paris 06, Sorbonne Univ, Inst Pierre Simon Laplace, Lab Meteorol Dynam, Paris, France |
推荐引用方式 GB/T 7714 | Pietschnig, M.,Lambert, F. H.,Saint-Lu, M.,et al. The Presence of Africa and Limited Soil Moisture Contribute to Future Drying of South America[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(21):12445-12453. |
APA | Pietschnig, M.,Lambert, F. H.,Saint-Lu, M.,&Vallis, G. K..(2019).The Presence of Africa and Limited Soil Moisture Contribute to Future Drying of South America.GEOPHYSICAL RESEARCH LETTERS,46(21),12445-12453. |
MLA | Pietschnig, M.,et al."The Presence of Africa and Limited Soil Moisture Contribute to Future Drying of South America".GEOPHYSICAL RESEARCH LETTERS 46.21(2019):12445-12453. |
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