Implementation of new time integration methods in POM
Qiang, W; Zhou, WD; Wang, DX; wdzhou@scsio.ac.cn
2014
发表期刊OCEAN DYNAMICS
ISSN1616-7341
卷号64期号:5页码:643-654
摘要Instead of the standard leapfrog (SLF) scheme, an alternative leapfrog (ALF) scheme is used to solve the barotropic equations of the external mode in the Princeton Ocean Model (POM). The ALF scheme is modified in this study to deal with the nonlinear finite amplitude surface displacement. ALF has the advantage of improved numerical properties, longer time step relative to SLF, conservation of energy, and elimination of the Asselin filter. The numerical experiments of POM are implemented to show the above advantages. The split time stepping in 3D POM is found in this study to have numerical discrepancy due to the mismatched stepping between external and internal modes, and it results in a splitting error between the external and internal modes. A new split time stepping is therefore proposed. Numerical analysis indicates that there is no discrepancy with this split time stepping. The new split time stepping is implemented in the 3D POM. The numerical experiments demonstrate that the splitting error in POM can be reduced by three orders of magnitude relative to the original formulation, though the numerical error of the original formulation is already quite small.
部门归属[Qiang, Wang ; Zhou, Weidong ; Wang, Dongxiao] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China
关键词Alternative Leapfrog (Alf) Scheme Princeton Ocean Model(Pom) Split Time Stepping Time-splitting Error
学科领域Oceanography
资助者Chinese Academy of Sciences [XDA11010304]; National Natural Science Foundation of China [41376026, 41206011] ; Chinese Academy of Sciences [XDA11010304]; National Natural Science Foundation of China [41376026, 41206011] ; Chinese Academy of Sciences [XDA11010304]; National Natural Science Foundation of China [41376026, 41206011] ; Chinese Academy of Sciences [XDA11010304]; National Natural Science Foundation of China [41376026, 41206011]
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收录类别sci
资助项目LTO
资助者Chinese Academy of Sciences [XDA11010304]; National Natural Science Foundation of China [41376026, 41206011] ; Chinese Academy of Sciences [XDA11010304]; National Natural Science Foundation of China [41376026, 41206011] ; Chinese Academy of Sciences [XDA11010304]; National Natural Science Foundation of China [41376026, 41206011] ; Chinese Academy of Sciences [XDA11010304]; National Natural Science Foundation of China [41376026, 41206011]
WOS记录号WOS:000335669200002
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/10555
专题热带海洋环境国家重点实验室(LTO)
通讯作者wdzhou@scsio.ac.cn
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GB/T 7714
Qiang, W,Zhou, WD,Wang, DX,et al. Implementation of new time integration methods in POM[J]. OCEAN DYNAMICS,2014,64(5):643-654.
APA Qiang, W,Zhou, WD,Wang, DX,&wdzhou@scsio.ac.cn.(2014).Implementation of new time integration methods in POM.OCEAN DYNAMICS,64(5),643-654.
MLA Qiang, W,et al."Implementation of new time integration methods in POM".OCEAN DYNAMICS 64.5(2014):643-654.
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