globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-016-3319-9
Scopus记录号: 2-s2.0-84982272803
论文题名:
The South Atlantic Anticyclone as a key player for the representation of the tropical Atlantic climate in coupled climate models
作者: Cabos W.; Sein D.V.; Pinto J.G.; Fink A.H.; Koldunov N.V.; Alvarez F.; Izquierdo A.; Keenlyside N.; Jacob D.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2017
卷: 48, 期:2017-11-12
起始页码: 4051
结束页码: 4069
语种: 英语
英文关键词: Seasonal cycle ; South Atlantic Anticyclone ; Southeastern tropical Atlantic ; SST biases
英文摘要: The key role of the South Atlantic Anticyclone (SAA) on the seasonal cycle of the tropical Atlantic is investigated with a regionally coupled atmosphere–ocean model for two different coupled domains. Both domains include the equatorial Atlantic and a large portion of the northern tropical Atlantic, but one extends southward, and the other northwestward. The SAA is simulated as internal model variability in the former, and is prescribed as external forcing in the latter. In the first case, the model shows significant warm biases in sea surface temperature (SST) in the Angola-Benguela front zone. If the SAA is externally prescribed, these biases are substantially reduced. The biases are both of oceanic and atmospheric origin, and are influenced by ocean–atmosphere interactions in coupled runs. The strong SST austral summer biases are associated with a weaker SAA, which weakens the winds over the southeastern tropical Atlantic, deepens the thermocline and prevents the local coastal upwelling of colder water. The biases in the basins interior in this season could be related to the advection and eddy transport of the coastal warm anomalies. In winter, the deeper thermocline and atmospheric fluxes are probably the main biases sources. Biases in incoming solar radiation and thus cloudiness seem to be a secondary effect only observed in austral winter. We conclude that the external prescription of the SAA south of 20°S improves the simulation of the seasonal cycle over the tropical Atlantic, revealing the fundamental role of this anticyclone in shaping the climate over this region. © 2016, The Author(s).
资助项目: FP7, Seventh Framework Programme ; FP7, Seventh Framework Programme ; FP7, Seventh Framework Programme ; FP7, Seventh Framework Programme ; FP7, Seventh Framework Programme ; FP7, Seventh Framework Programme
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53196
Appears in Collections:过去全球变化的重建

Files in This Item:

There are no files associated with this item.


作者单位: Department of Physics, University of Alcalá, Alcalá de Henares, Madrid, Spain; Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany; P. P. Shirshov Institute of Oceanology RAS, St.Petersburg, Russian Federation; Department of Meteorology, University of Reading, Reading, United Kingdom; Institute for Geophysics and Meteorology, University of Cologne, Cologne, Germany; Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, Germany; Climate Service Center, Helmholtz Zentrum Geesthacht, Hamburg, Germany; Marine Science and Technological Center of Andalusia, University of Cadiz, Cádiz, Spain; Geophysical Institute and Bjerknes Centre for Climate Research, University of Bergen, Bergen, Norway

Recommended Citation:
Cabos W.,Sein D.V.,Pinto J.G.,et al. The South Atlantic Anticyclone as a key player for the representation of the tropical Atlantic climate in coupled climate models[J]. Climate Dynamics,2017-01-01,48(2017-11-12)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Cabos W.]'s Articles
[Sein D.V.]'s Articles
[Pinto J.G.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Cabos W.]'s Articles
[Sein D.V.]'s Articles
[Pinto J.G.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Cabos W.]‘s Articles
[Sein D.V.]‘s Articles
[Pinto J.G.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.