Equatorward shift of annual Rossby waves in the Equatorial Pacific Ocean
文献类型：CNKI期刊论文
| 作者 | Ma X(马晓) ; Sun C(孙澈)
|
| 发表日期 | 2016-01-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | equatorial Pacific annual Rossby wave equatorward shift Argo profiles MOAA-GPV gridded data |
| 英文摘要 | Annual Rossby wave is a key component of the ENSO phenomenon in the equatorial Pacific Ocean. Due to the paucity and seasonal bias in historical hydrographic data,previous studies on equatorial Rossby waves only gave qualitative description. The accumulation of Argo measurements in recent years has greatly alleviated the data problem. In this study,seasonal variation of the equatorial Pacific Ocean is examined with annual harmonic analysis of Argo gridded data. Results show that strong seasonal signal is present in the western equatorial Pacific and explains more than 50% of the thermal variance below 500 m. Lag-correlation tracing further shows that this sub-thermocline seasonal signal originates from the eastern equatorial Pacific via downward and southwestward propagation of annual Rossby waves. Possible mechanisms for the equatorward shift of Rossby wave path are also discussed. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Basic Research Program of China(973 Program)(No.2012CB417400) ; the National Natural Science Foundation of China(Nos.41421005,U1406401) |
| 卷 | v.34期:01页:214-220 |
| 语种 | 英文; |
| 分类号 | P731.2;P732 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/189804]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.InstituteofOceanology,ChineseAcademyofSciences 2.UniversityofChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | Ma X,Sun C. Equatorward shift of annual Rossby waves in the Equatorial Pacific Ocean. 2016. |
入库方式： OAI收割
来源：海洋研究所
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