DOI: 10.1007/s00382-012-1641-4
Scopus记录号: 2-s2.0-84886716693
论文题名: Effects of large-scale wind on the Kuroshio path south of Japan in a 60-year historical OGCM simulation
作者: Tsujino H. ; Nishikawa S. ; Sakamoto K. ; Usui N. ; Nakano H. ; Yamanaka G.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2013
卷: 41, 期: 2017-09-10 起始页码: 2287
结束页码: 2318
语种: 英语
英文关键词: Historical simulation
; Kuroshio
; Large meander
; Long-term variability
; North Pacific Ocean
; OGCM
英文摘要: The effects of large-scale wind forcing on the bimodality of the Kuroshio path south of Japan, the large meander (LM) and non-large meander (NLM), were studied by using a historical simulation (1948-2007) with a high-resolution Ocean general circulation models (OGCM). The Kuroshio in this simulation spent much time in the NLM state, and reproduced several aspects of its long-term path variability for the first time in historical OGCM simulation, presumably because the eddy kinetic energy was kept at a moderate level. By using the simulated fields, the relationships between wind forcing (or Kuroshio transport) and path variation proposed by past studies were tested, and specific roles of eddies in those variations were investigated. The long-term variation of the simulated net Kuroshio transport south of Japan was largely explained by the linear baroclinic Rossby wave adjustment to wind forcing. In the simulated LM events, a triggering meander originated from the interaction of a wind-induced positive sea surface height (SSH) anomaly with the upstream Kuroshio and was enlarged by cyclonic eddies from the recirculation gyre. The cyclonic eddy of the trigger meander was followed by a sizable anticyclonic eddy on the upstream side. Subsequently, a weak (strong) Kuroshio favored the LM (NLM). The LM tended to be maintained when the Kuroshio transport off southern Japan was small, and increasing Kuroshio transport promoted decay of an existing LM. The supply of disturbances from upstream, which is related to the wind-induced SSH variability at low latitudes, contributed to the maintenance of an existing LM. © 2013 Springer-Verlag Berlin Heidelberg.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54729
Appears in Collections: 过去全球变化的重建
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作者单位: Meteorological Research Institute, 1-1 Nagamine, Tsukuba, Ibaraki, 305-0052, Japan; Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwa, Chiba, 277-8568, Japan; Data Research Center for Marine-Earth Sciences, Japan Agency for Marine-Earth Science and Technology, Yokohama, Kanagawa, 236-0001, Japan
Recommended Citation:
Tsujino H.,Nishikawa S.,Sakamoto K.,et al. Effects of large-scale wind on the Kuroshio path south of Japan in a 60-year historical OGCM simulation[J]. Climate Dynamics,2013-01-01,41(2017-09-10)