globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-11-00329.1
Scopus记录号: 2-s2.0-84858603423
论文题名:
Atmospheric circulations induced by a midlatitude SST front: A GCM study
作者: Brachet S.; Codron F.; Feliks Y.; Ghil M.; Le Treut H.; Simonnet E.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期:6
起始页码: 1847
结束页码: 1853
语种: 英语
Scopus关键词: Atmosphere-ocean interactions ; Atmospheric circulation ; Boundary currents ; General circulation model ; Marine boundary layers ; North Atlantic Ocean ; Boundary layers ; Climatology ; Ocean currents ; air-sea interaction ; atmospheric circulation ; boundary layer ; general circulation model ; oceanic front ; sea surface temperature ; temperature anomaly ; western boundary current ; Atlantic Ocean ; Atlantic Ocean (North) ; Gulf Stream
英文摘要: The atmospheric effects of sea surface temperature (SST) anomalies over and near western boundary currents are a matter of renewed interest. The general circulation model (GCM) of the Laboratoire de Météorologie Dynamique (LMD-Z) has a zooming capability that allows a regionally increased resolution. ThisGCMis used to analyze the impact of a sharp SST front in the North Atlantic Ocean: two simulations are compared, one with climatological SSTs and the other with an enhanced Gulf Stream front. The results corroborate the theory developed previously by the present team to explain the impact of oceanic fronts. In this theory, the vertical velocity at the top of the atmospheric boundary layer has two components: mechanical and thermal. It is the latter that is dominant in the tropics, while in midlatitudes both play a role in determining the wind convergence above the boundary layer. The strengthened SST front does generate the previously predicted stronger ascent above the warmer water south of the front and stronger descent above the colder waters to the north. In the GCM simulations, the ascent over the warm anomalies is deeper and more intense than the descent. © 2012 American Meteorological Society.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52505
Appears in Collections:气候变化事实与影响

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作者单位: Laboratoire de Météorologie Dynamique, IPSL, CNRS, Ecole Normale Supérieure, UniversitéPierre et Marie Curie, Paris, France; IFREMER, Laboratoire d'Océanographie Spatiale, Plouzane, France; Atmospheric and Oceanic Sciences Department, University of California, Los Angeles, Los Angeles, CA, United States; Institute of Geophysics and Planetary Physics, University of California, Los Angeles, Los Angeles, CA, United States; Department of Mathematics, Israel Institute of Biological Research, Nes-Ziona, Israel; Institut Non-Linéaire de Nice, CNRS, Universitéde Nice Sophia-Antipolis, Nice, France

Recommended Citation:
Brachet S.,Codron F.,Feliks Y.,et al. Atmospheric circulations induced by a midlatitude SST front: A GCM study[J]. Journal of Climate,2012-01-01,25(6)
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