Dynamical diagnostics of the SST annual cycle in the eastern equatorial Pacific: part I a linear coupled framework
文献类型：期刊论文
| 作者 | Chen, YY; Jin, FF |
| 刊名 | CLIMATE DYNAMICS
 |
| 出版日期 | 2018 |
| 卷号 | 50期号:2018-05-06页码:1841-1862 |
| 关键词 | SST annual cycle Ocean-atmosphere interaction Westward propagation External forcing |
| 通讯作者 | jff@hawaii.edu |
| 英文摘要 | The eastern equatorial Pacific has a pronounced westward propagating SST annual cycle resulting from ocean-atmosphere interactions with equatorial semiannual solar forcing and off-equatorial annual solar forcing conveyed to the equator. In this two-part paper, a simple linear coupled framework is proposed to quantify the internal dynamics and external forcing for a better understanding of the linear part of the dynamics annual cycle. It is shown that an essential internal dynamical factor is the SST damping rate which measures the coupled stability in a similar way as the Bjerknes instability index for the El Nio-Southern Oscillation. It comprises three major negative terms (dynamic damping due to the Ekman pumping feedback, mean circulation advection, and thermodynamic feedback) and two positive terms (thermocline feedback and zonal advection). Another dynamical factor is the westward-propagation speed that is mainly determined by the thermodynamic feedback, the Ekman pumping feedback, and the mean circulation. The external forcing is measured by the annual and semiannual forcing factors. These linear internal and external factors, which can be estimated from data, determine the amplitude of the annual cycle. |
| 学科主题 | Meteorology & Atmospheric Sciences |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/17092]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 推荐引用方式 GB/T 7714 | Chen, YY,Jin, FF. Dynamical diagnostics of the SST annual cycle in the eastern equatorial Pacific: part I a linear coupled framework[J]. CLIMATE DYNAMICS,2018,50(2018-05-06):1841-1862. |
| APA | Chen, YY,&Jin, FF.(2018).Dynamical diagnostics of the SST annual cycle in the eastern equatorial Pacific: part I a linear coupled framework.CLIMATE DYNAMICS,50(2018-05-06),1841-1862. |
| MLA | Chen, YY,et al."Dynamical diagnostics of the SST annual cycle in the eastern equatorial Pacific: part I a linear coupled framework".CLIMATE DYNAMICS 50.2018-05-06(2018):1841-1862. |
入库方式： OAI收割
来源：南海海洋研究所
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