Impact of nonlinear processes on formation of the Kuroshio large meander path in a barotropic inflow-outflow model

doi:10.1007/s00343-014-3285-1

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	Impact of nonlinear processes on formation of the Kuroshio large meander path in a barotropic inflow-outflow model
	Zhang Peijun 1,3; Wang Qiang 1,2; Ma Libin 1,3
	2015
发表期刊	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
卷号	33 期号:1 页码:252-261
文章类型	Article
摘要	Based on a barotropic inflow-outflow model, we examine the formation of the Kuroshio large meander (LM) using conditional nonlinear optimal perturbation (CNOP) method. Both linear and nonlinear evolutions of such perturbations obtained by this method are investigated. The results show that the nonlinear evolution can result in the Kuroshio transition from a straight to LM path, whereas the linear evolution cannot. This implies that nonlinearity plays an important role in the formation of the Kuroshio LM path. The nonlinearity exists as advection in the evolution equations of the perturbation derived from the barotropic inflow-outflow model, namely the nonlinear advection of the perturbation by the perturbation (NAPP). By examining the role of this nonlinearity, we find that the NAPP tends to move the cyclonic eddy induced by the CNOP-type perturbation westward. Together with the beta effect, this offsets part of the eastward advection caused by the interaction between the perturbation and the background flow. Hence, the eastward movement of the cyclonic eddy is significantly weakened, effectively causing the eddy to develop. The sufficient evolution of this cyclonic eddy leads to the formation of the Kuroshio LM.
关键词	Kuroshio Large Meander Nonlinear Perturbation Advection Conditional Nonlinear Optimal Perturbation (Cnop)
DOI	10.1007/s00343-014-3285-1
收录类别	SCI
语种	英语
WOS记录号	WOS:000351156200028
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/25432
专题	实验海洋生物学重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Inst Atmospher Phys, LASG, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	Zhang Peijun,Wang Qiang,Ma Libin. Impact of nonlinear processes on formation of the Kuroshio large meander path in a barotropic inflow-outflow model[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2015,33(1):252-261.
APA	Zhang Peijun,Wang Qiang,&Ma Libin.(2015).Impact of nonlinear processes on formation of the Kuroshio large meander path in a barotropic inflow-outflow model.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,33(1),252-261.
MLA	Zhang Peijun,et al."Impact of nonlinear processes on formation of the Kuroshio large meander path in a barotropic inflow-outflow model".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 33.1(2015):252-261.

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