DOI: 10.1007/s00382-015-2897-2
Scopus记录号: 2-s2.0-84947430316
论文题名: Tropical atmospheric response to decadal changes in the Atlantic Equatorial Mode
作者: Losada T. ; Rodríguez-Fonseca B.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2016
卷: 47, 期: 2017-03-04 起始页码: 1211
结束页码: 1224
语种: 英语
英文关键词: Climate variability
; Equatorial mode
; Tropical Atlantic
; Tropical teleconnections
英文摘要: It has been shown that the atmospheric response to the Atlantic Equatorial Mode is non-stationary. After the 1970s, Sea Surface Temperature (SST) anomalies in the tropical Atlantic are able to alter the atmosphere in the tropical Pacific via modifications of the Walker circulation. Such changes could be related to the differences in the background state of the global SSTs before and after the 1970s, but also to changes in the interannual Equatorial Mode itself. In this work we first describe the differences in the interannual Equatorial Mode before and after the 1970s. Then we use two AGCMs to perform different sensitivity experiments changing the spatial structure of the Equatorial Mode, and we explore the differences in the atmospheric response over the tropical Pacific region to each of the SST patterns considered. It is shown that the changes in the Walker Atlantic–Pacific cell produced by the EM are stronger after the 1970s, and are reinforced by the change in the impact of the EM over the Indian Ocean and the Maritime Continent. It is also shown that, although the Atlantic–Pacific connection is established by the aforementioned changes in the Walker circulation between the two basins, the modulation of the Indian sector is crucial for a realistic simulation of such connection by climate models. © 2015, Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53608
Appears in Collections: 过去全球变化的重建
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作者单位: Departamento de Física de La Tierra, Astronomía y Astrofísica I, UCM, Plaza de las Ciencias 1, Madrid, Spain; Instituto de Geociencias (CSIC-UCM), Facultad de CC. Físicas, Plaza de Ciencias 1, Madrid, Spain
Recommended Citation:
Losada T.,Rodríguez-Fonseca B.. Tropical atmospheric response to decadal changes in the Atlantic Equatorial Mode[J]. Climate Dynamics,2016-01-01,47(2017-03-04)