An error evaluation on the vertical velocity algorithm in POM

doi:10.1007/s13131-014-0505-7

IOCAS-IR > 海洋环流与波动重点实验室

	An error evaluation on the vertical velocity algorithm in POM
	Han Lei 1,2; Han, L (reprint author), State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China.
	2014-07-01
发表期刊	ACTA OCEANOLOGICA SINICA
卷号	33 期号:7 页码:12-20
文章类型	Article
摘要	A time splitting technique is common to many free surface ocean models. The different truncation errors in the equations of the internal and external modes require a numerical adjustment to make sure that algorithms correctly satisfy continuity equations and conserve tracers quantities. The princeton ocean model (POM) has applied a simple method of adjusting the vertical mean of internal velocities to external velocities at each internal time step. However, due to the Asselin time filter method adopted to prevent the numerical instability, the method of velocity adjustment used in POM can no longer guarantee the satisfaction of the continuity equation in the internal mode, though a special treatment is used to relate the surface elevation of the internal mode with that of the external mode. The error is proved to be a second-order term of the coefficient in the Asselin filter. One influence of this error in the numerical model is the failure of the kinetic boundary condition at the sea floor. By a regional experiment and a quasi-global experiment, the magnitudes of this error are evaluated, and several sensitivity tests of this error are performed. The characteristic of this error is analyzed and two alternative algorithms are suggested to reduce the error.
关键词	Mode Splitting Asselin Filter Velocity Adjustment Method Pom
学科领域	Oceanography
DOI	10.1007/s13131-014-0505-7
收录类别	SCI
语种	英语
WOS记录号	WOS:000338098400002
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/337002/23908
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 . An error evaluation on the vertical velocity algorithm in POM[J]. ACTA OCEANOLOGICA SINICA,2014,33(7):12-20.
APA	Han Lei,&Han, L .(2014).An error evaluation on the vertical velocity algorithm in POM.ACTA OCEANOLOGICA SINICA,33(7),12-20.
MLA	Han Lei,et al."An error evaluation on the vertical velocity algorithm in POM".ACTA OCEANOLOGICA SINICA 33.7(2014):12-20.

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