Impact of spatial resolution and spatial difference accuracy on the performance of Arakawa A-D grids
文献类型：期刊论文
| 作者 | Liu Yu-Di1,2; Ren Jing-Peng1; Li Guo-Yi1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2009 |
| 卷号 | 52期号:1页码:30-40 |
| 关键词 | Barotropic Geostrophic Adjustment Process Arakawa A-d Grid Second-order Difference Scheme Fourth-order Difference Scheme |
| ISSN号 | 0001-5733 |
| 文献子类 | Article |
| 英文摘要 | This paper alms at illustrating the impact of spatial difference scheme and spatial resolution on the performance of Arakawa A-D grids in physical space. Linear shallow water equations are discretized and forecasted on Arakawa A-D grids for 120-minute using the ordinary second-order (M and fourth-order (C4) finite difference schemes with the grid spacing being 100 km, 10 km and I km, respectively. Then the forecasted results are compared with the exact solution, the result indicates that when the grid spacing is I kin, the inertial gravity wave can be simulated on any grid with the same results from C2 scheme or C4 scheme, namely the impact of variable configuration is neglectable; while the inertial gravity wave is simulated with lengthened grid spacing, the effects of different variable configurations are different. However, whether for C2 scheme or for C4 scheme, the RMS is minimal (maximal) on C (D) grid. At the same time it is also shown that when the difference accuracy increases from C2 scheme to C4 scheme, the resulted forecasts do not uniformly decrease, which is validated by the change of the group A velocity relative error from C2 scheme to C4 scheme. Therefore, the impact of the grid spacing is more important than that of the difference accuracy on the performance of Arakawa A-D grid.; This paper alms at illustrating the impact of spatial difference scheme and spatial resolution on the performance of Arakawa A-D grids in physical space. Linear shallow water equations are discretized and forecasted on Arakawa A-D grids for 120-minute using the ordinary second-order (M and fourth-order (C4) finite difference schemes with the grid spacing being 100 km, 10 km and I km, respectively. Then the forecasted results are compared with the exact solution, the result indicates that when the grid spacing is I kin, the inertial gravity wave can be simulated on any grid with the same results from C2 scheme or C4 scheme, namely the impact of variable configuration is neglectable; while the inertial gravity wave is simulated with lengthened grid spacing, the effects of different variable configurations are different. However, whether for C2 scheme or for C4 scheme, the RMS is minimal (maximal) on C (D) grid. At the same time it is also shown that when the difference accuracy increases from C2 scheme to C4 scheme, the resulted forecasts do not uniformly decrease, which is validated by the change of the group A velocity relative error from C2 scheme to C4 scheme. Therefore, the impact of the grid spacing is more important than that of the difference accuracy on the performance of Arakawa A-D grid. |
| 学科主题 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000262974800004 |
| 公开日期 | 2010-12-22 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/2385]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 作者单位 | 1.PLA Univ Sci & Technol, Inst Meteorol, Nanjing 211101, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu Yu-Di,Ren Jing-Peng,Li Guo-Yi. Impact of spatial resolution and spatial difference accuracy on the performance of Arakawa A-D grids[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2009,52(1):30-40. |
| APA | Liu Yu-Di,Ren Jing-Peng,&Li Guo-Yi.(2009).Impact of spatial resolution and spatial difference accuracy on the performance of Arakawa A-D grids.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,52(1),30-40. |
| MLA | Liu Yu-Di,et al."Impact of spatial resolution and spatial difference accuracy on the performance of Arakawa A-D grids".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 52.1(2009):30-40. |
入库方式： OAI收割
来源：海洋研究所
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