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DOI | 10.1007/s00382-017-3725-7 |
Dynamical diagnostics of the SST annual cycle in the eastern equatorial Pacific: part I a linear coupled framework | |
Chen, Ying-Ying1,2,3,4; Jin, Fei-Fei3 | |
2018-03-01 | |
发表期刊 | CLIMATE DYNAMICS
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ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2018 |
卷号 | 50页码:1841-1862 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
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. |
英文关键词 | SST annual cycle Ocean-atmosphere interaction Westward propagation External forcing |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000426707100021 |
WOS关键词 | SEA-SURFACE TEMPERATURE ; OCEAN-ATMOSPHERE INTERACTION ; NINO-SOUTHERN-OSCILLATION ; EL-NINO ; SEASONAL CYCLE ; TROPICAL PACIFIC ; INSTABILITY WAVES ; MIXED-LAYER ; COLD-TONGUE ; HEAT-BUDGET |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/35701 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China; 2.Univ Chinese Acad Sci, Beijing, Peoples R China; 3.Univ Hawaii Manoa, Sch Ocean & Earth Sci & Technol, Dept Atmospher Sci, Honolulu, HI 96822 USA; 4.Nanjing Univ Informat Sci & Technol, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Chen, Ying-Ying,Jin, Fei-Fei. Dynamical diagnostics of the SST annual cycle in the eastern equatorial Pacific: part I a linear coupled framework[J]. CLIMATE DYNAMICS,2018,50:1841-1862. |
APA | Chen, Ying-Ying,&Jin, Fei-Fei.(2018).Dynamical diagnostics of the SST annual cycle in the eastern equatorial Pacific: part I a linear coupled framework.CLIMATE DYNAMICS,50,1841-1862. |
MLA | Chen, Ying-Ying,et al."Dynamical diagnostics of the SST annual cycle in the eastern equatorial Pacific: part I a linear coupled framework".CLIMATE DYNAMICS 50(2018):1841-1862. |
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