globalchange  > 影响、适应和脆弱性
DOI: 10.1007/s00382-017-4001-6
Scopus记录号: 2-s2.0-85034229734
论文题名:
Indian Ocean warming during peak El Niño cools surrounding land masses
作者: Herold N.; Santoso A.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 51, 期:2018-05-06
起始页码: 2097
结束页码: 2112
语种: 英语
英文关键词: El Niño ; ENSO ; Indian Ocean ; Teleconnection
Scopus关键词: climate effect ; El Nino ; El Nino-Southern Oscillation ; empirical analysis ; geopotential ; global warming ; Rossby wave ; teleconnection ; troposphere ; Indian Ocean ; North Africa ; Pacific Ocean ; South Asia
英文摘要: Understanding the interactions between the Pacific and other ocean basins during extreme phases of the El Niño-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 Niño 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 Niño 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 Niño 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 Niño events, which are projected to increase under global warming. © 2017, Springer-Verlag GmbH Germany, part of Springer Nature.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109160
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: Climate Change Research Centre and ARC Centre of Excellence for Climate System Science, University of New South Wales, Sydney, Australia; Centre for Southern Hemisphere Oceans Research (CSHOR), CSIRO Oceans and Atmosphere, Hobart, 7004, Australia

Recommended Citation:
Herold N.,Santoso A.. Indian Ocean warming during peak El Niño cools surrounding land masses[J]. Climate Dynamics,2018-01-01,51(2018-05-06)
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