Effect of global mass conservation among geophysical fluids on the seasonal length of day variation
文献类型：期刊论文
| 作者 | Yan, Haoming ; Chao, Benjamin F. |
| 刊名 | Journal of Geophysical Research-Solid Earth
 |
| 出版日期 | 2012 |
| 卷号 | 117期号:B02401页码:2-6 |
| 中文摘要 | Geophysical fluids models for the atmosphere, ocean, and land hydrology usually do not properly enforce the conservation of mass either individually or collectively. Called the global mass balance (GMB) effect, these errors, if not corrected, will significantly affect the determination of the effect of geophysical fluids on the variation in the Earth's rotation rate or length of day (LOD). Here we analyze the seasonal budget of the excitation sources for LOD variation in comparison with corresponding observations. We find that (1) the combined mass-induced excitations of LOD variation by geophysical fluids are brought to much better agreement with the observed upon accounting for the GMB effect; (2) the above can be further improved to almost perfect closure if the motion term of the atmospheric angular momentum (to be removed from the observed LOD variation in obtaining the mass-induced LOD variation) is magnified by 7%, corroborating the finding of Chao and Yan (2010); and (3) the above quantities all agree remarkably well with the equivalent LOD variation determined via J(2) variation from satellite laser ranging observations, indicating the usefulness of the latter as an independent measurement for mass transports in the geophysical fluids. |
| 原文出处 | |
| 公开日期 | 2012-04-11 |
| 源URL | [http://ir.whigg.ac.cn//handle/342008/3420]  |
| 专题 | 测量与地球物理研究所_其他_期刊论文 |
| 推荐引用方式 GB/T 7714 | Yan, Haoming,Chao, Benjamin F.. Effect of global mass conservation among geophysical fluids on the seasonal length of day variation[J]. Journal of Geophysical Research-Solid Earth,2012,117(B02401):2-6. |
| APA | Yan, Haoming,&Chao, Benjamin F..(2012).Effect of global mass conservation among geophysical fluids on the seasonal length of day variation.Journal of Geophysical Research-Solid Earth,117(B02401),2-6. |
| MLA | Yan, Haoming,et al."Effect of global mass conservation among geophysical fluids on the seasonal length of day variation".Journal of Geophysical Research-Solid Earth 117.B02401(2012):2-6. |
入库方式： OAI收割
来源：测量与地球物理研究所
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。