Asymmetry of Interannual Sea Level Variability in the Western Tropical Pacific: Responses to El Nino and La Nina
文献类型：期刊论文
| 作者 | Ren, Qiuping1,2 ; Li, Yuanlong2,4,5; Zheng, Fei3,5; Wang, Fan1,2,4,5; Duan, Jing2,4,5; Li, Rui1,2
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| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
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| 出版日期 | 2020-10-01 |
| 卷号 | 125期号:10页码:17 |
| 关键词 | Western Tropical Pacific Sea Level Interannual Variability ENSO ENSO diversity |
| ISSN号 | 2169-9275 |
| DOI | 10.1029/2020JC016616 |
| 通讯作者 | Wang, Fan(fwang@qdio.ac.cn) |
| 英文摘要 | The western tropical Pacific (WTP) exhibits pronounced large-scale sea level anomalies (SLAs) during El Nino-Southern Oscillation (ENSO) events with amplitudes of similar to 0.1 m, exerting potential threats to many low-lying islands. It is found that the sea level falling in El Nino condition is evidently stronger than the rising in La Nina condition. This SLA asymmetry in the WTP associated with ENSO is investigated in this study, and the underlying dynamic processes are explored. Such asymmetry is most prominent at around 160 degrees E with the SLA response to El Nino being three times stronger than to La Nina, but it is much inconspicuous near the western boundary. Sensitivity experiments of a simplified ocean model suggest that the different structures of surface wind anomalies between El Nino and La Nina conditions are critical in generating asymmetric SLA responses of the WTP. The El Nino's westerly wind anomaly patch locates more to the east than the La Nina's easterly wind patch during the mature stage, and its upwelling effects are accumulated over a wider longitude range and cause stronger negative SLAs in the WTP. Near the western boundary, however, upwelling effects are attenuated by easterly wind anomalies during the mature stage of El Nino. Further analysis reveals that eastern Pacific-type El Nino events are more favorable for generating asymmetric SLAs in the WTP than the central Pacific-type events. |
| 资助项目 | Strategic Priority Research Program of Chinese Academy of Sciences[XDB42000000] ; National Natural Science Foundation of China[41730534] ; National Natural Science Foundation of China[41806014] |
| WOS研究方向 | Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000612077200019 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/170072]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Wang, Fan |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 3.Chinese Acad Sci, Inst Atmospher Phys, Int Ctr Climate & Environm Sci, Beijing, Peoples R China 4.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Ocean Dynam & Climate, Qingdao, Peoples R China 5.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ren, Qiuping,Li, Yuanlong,Zheng, Fei,et al. Asymmetry of Interannual Sea Level Variability in the Western Tropical Pacific: Responses to El Nino and La Nina[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2020,125(10):17. |
| APA | Ren, Qiuping,Li, Yuanlong,Zheng, Fei,Wang, Fan,Duan, Jing,&Li, Rui.(2020).Asymmetry of Interannual Sea Level Variability in the Western Tropical Pacific: Responses to El Nino and La Nina.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,125(10),17. |
| MLA | Ren, Qiuping,et al."Asymmetry of Interannual Sea Level Variability in the Western Tropical Pacific: Responses to El Nino and La Nina".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 125.10(2020):17. |
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来源：海洋研究所
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