A two-time-level split-explicit ocean circulation model (MASNUM) and its validation

doi:10.1007/s13131-014-0553-z

IOCAS-IR > 海洋环流与波动重点实验室

	A two-time-level split-explicit ocean circulation model (MASNUM) and its validation
	Han Lei 1,2; Han, L (reprint author), State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China.
	2014-11-01
发表期刊	ACTA OCEANOLOGICA SINICA
卷号	33 期号:11 页码:11-35
文章类型	Article
摘要	A two-time-level, three-dimensional numerical ocean circulation model (named MASNUM) was established with a two-level, single-step Eulerian forward-backward time-differencing scheme. A mathematical model of large-scale oceanic motions was based on the terrain-following coordinated, Boussinesq, Reynolds-averaged primitive equations of ocean dynamics. A simple but very practical Eulerian forward-backward method was adopted to replace the most preferred leapfrog scheme as the time-differencing method for both barotropic and baroclinic modes. The forward-backward method is of second-order of accuracy, computationally efficient by requiring only one function evaluation per time step, and free of the computational mode inherent in the three-level schemes. This method is superior to the leapfrog scheme in that the maximum time step of stability is twice as large as that of the leapfrog scheme in staggered meshes thus the computational efficiency could be doubled. A spatial smoothing method was introduced to control the nonlinear instability in the numerical integration. An ideal numerical experiment simulating the propagation of the equatorial Rossby soliton was performed to test the amplitude and phase error of this new model. The performance of this circulation model was further verified with a regional (northwest Pacific) and a quasi-global (global ocean simulation with the Arctic Ocean excluded) simulation experiments. These two numerical experiments show fairly good agreement with the observations. The maximum time step of stability in these two experiments were also investigated and compared between this model and that model which adopts the leapfrog scheme.
关键词	Ocean Circulation Model Forward-backward Method Equatorial Rossby Soliton Yellow Sea Cold Water Mass
学科领域	Oceanography
DOI	10.1007/s13131-014-0553-z
收录类别	SCI
语种	英语
WOS记录号	WOS:000344583400002
引用统计	被引频次：11[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/337002/23907
专题	海洋环流与波动重点实验室
通讯作者	Han, L (reprint author), State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China.
作者单位	1.State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China 2.Chinese Acad Sci, Inst Oceanog, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Han Lei,Han, L . A two-time-level split-explicit ocean circulation model (MASNUM) and its validation[J]. ACTA OCEANOLOGICA SINICA,2014,33(11):11-35.
APA	Han Lei,&Han, L .(2014).A two-time-level split-explicit ocean circulation model (MASNUM) and its validation.ACTA OCEANOLOGICA SINICA,33(11),11-35.
MLA	Han Lei,et al."A two-time-level split-explicit ocean circulation model (MASNUM) and its validation".ACTA OCEANOLOGICA SINICA 33.11(2014):11-35.

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