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DOI | 10.1007/s00382-017-4001-6 |
Indian Ocean warming during peak El Nio cools surrounding land masses | |
Herold, N.1,2; Santoso, A.1,2,3 | |
2018-09-01 | |
发表期刊 | CLIMATE DYNAMICS
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ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2018 |
卷号 | 51页码:2097-2112 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | Understanding the interactions between the Pacific and other ocean basins during extreme phases of the El Nio-Southern Oscillation (ENSO) is necessary for explaining its global climate impacts. Here climate model experiments are used to highlight a mechanism by which the characteristic warming of the Indian Ocean during peak El Nio months can cool North Africa and South Asia, an area encompassing over three billion people. It is found that warming of the Indian Ocean during extreme El Nio events leads to broader upper tropospheric geopotential height anomalies than would otherwise occur. This weakens the extratropical Rossby wave response initiated in the tropics and leads to higher pressure and reduced cloud forcing over North Africa and South Asia. Reanalysis data provides empirical support for this mechanism, although it is likely only to be prominent during strong El Nio events when Indian Ocean warming tends to be larger. This dampening effect needs to be taken into account in understanding the climatic impact of extreme El Nio events, which are projected to increase under global warming. |
英文关键词 | El Nino ENSO Indian Ocean Teleconnection |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000442433200027 |
WOS关键词 | SEA-SURFACE TEMPERATURES ; SOUTHERN-OSCILLATION ; CLIMATE SIMULATIONS ; ATMOSPHERIC BRIDGE ; SST ANOMALIES ; ENSO ; NINO ; VARIABILITY ; PACIFIC ; PRECIPITATION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
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/36323 |
专题 | 气候变化 |
作者单位 | 1.Univ New South Wales, Climate Change Res Ctr, Sydney, NSW, Australia; 2.Univ New South Wales, ARC Ctr Excellence Climate Syst Sci, Sydney, NSW, Australia; 3.CSIRO Oceans & Atmosphere, CSHOR, Hobart, Tas 7004, Australia |
推荐引用方式 GB/T 7714 | Herold, N.,Santoso, A.. Indian Ocean warming during peak El Nio cools surrounding land masses[J]. CLIMATE DYNAMICS,2018,51:2097-2112. |
APA | Herold, N.,&Santoso, A..(2018).Indian Ocean warming during peak El Nio cools surrounding land masses.CLIMATE DYNAMICS,51,2097-2112. |
MLA | Herold, N.,et al."Indian Ocean warming during peak El Nio cools surrounding land masses".CLIMATE DYNAMICS 51(2018):2097-2112. |
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