An error evaluation on the vertical velocity algorithm in POM
文献类型：期刊论文
| 作者 | Han Lei1,2 |
| 刊名 | ACTA OCEANOLOGICA SINICA
 |
| 出版日期 | 2014-07-01 |
| 卷号 | 33期号:7页码:12-20 |
| 关键词 | mode splitting asselin filter velocity adjustment method POM |
| 通讯作者 | Han, L (reprint author), State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China. |
| 英文摘要 | 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. |
| 学科主题 | Oceanography |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000338098400002 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/23908]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 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 |
| 推荐引用方式 GB/T 7714 | Han Lei. An error evaluation on the vertical velocity algorithm in POM[J]. ACTA OCEANOLOGICA SINICA,2014,33(7):12-20. |
| APA | Han Lei.(2014).An error evaluation on the vertical velocity algorithm in POM.ACTA OCEANOLOGICA SINICA,33(7),12-20. |
| MLA | Han Lei."An error evaluation on the vertical velocity algorithm in POM".ACTA OCEANOLOGICA SINICA 33.7(2014):12-20. |
入库方式： OAI收割
来源：海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。