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| Zonal Structure of Tropical Pacific Surface Salinity Anomalies Affects ENSO Intensity and Asymmetry | |
Guan, Cong1,2,3 ; Tian, Feng1,2,3; McPhaden, Michael J.4; Wang, Fan1,2,3; Hu, Shijian1,2,3; Zhang, Rong-Hua1,2,3
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| 2022-01-16 | |
| 发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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| ISSN | 0094-8276 |
| 卷号 | 49期号:1页码:10 |
| 通讯作者 | Wang, Fan([email protected]) |
| 摘要 | Previous studies have revealed the potential importance of salinity in El Nino-Southern Oscillation (ENSO) asymmetry, but the responsible mechanisms remain unclear. Here, we investigate how the zonal structure of surface salinity anomalies affects ENSO intensity and asymmetry by modifying freshwater flux in ocean general circulation model simulations. Results show that the amplitudes of El Nino and La Nina are both highly sensitive to zonal patterns of salinity anomalies, with the strongest sea surface temperature change occurring when maximum salinity anomalies are located near 170 degrees W. Furthermore, the effect of salinity anomalies in the central Pacific on El Nino warming is larger than those in the western Pacific on La Nina cooling. Thus, the asymmetric salinity anomalies strengthen the temperature asymmetry between El Nino and La Nina. Temperature budget analysis shows that vertical mixing and entrainment due to salinity-induced changes in stratification are a major response to different zonal patterns of freshwater flux forcing. |
| 关键词 | ENSO ENSO asymmetry ENSO intensity freshwater flux salinity vertical entrainment |
| DOI | 10.1029/2021GL096197 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Natural Science Foundation of China[42030410]; National Natural Science Foundation of China[41730534]; National Natural Science Foundation of China[42176008]; National Natural Science Foundation of China[41806016]; National Natural Science Foundation of China[41776018]; National Natural Science Foundation of China[91858101]; National Natural Science Foundation of China[42006001]; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| WOS记录号 | WOS:000743989800011 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/177933 |
| 专题 | 海洋环流与波动重点实验室 |
| 通讯作者 | Wang, Fan |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Inst Oceanol, Qingdao, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Qingdao, Peoples R China 4.NOAA, Pacific Marine Environm Lab, Seattle, WA USA |
| 第一作者单位 | 海洋环流与波动重点实验室; 中国科学院海洋大科学研究中心 |
| 通讯作者单位 | 海洋环流与波动重点实验室; 中国科学院海洋大科学研究中心 |
| 推荐引用方式 GB/T 7714 | Guan, Cong,Tian, Feng,McPhaden, Michael J.,et al. Zonal Structure of Tropical Pacific Surface Salinity Anomalies Affects ENSO Intensity and Asymmetry[J]. GEOPHYSICAL RESEARCH LETTERS,2022,49(1):10. |
| APA | Guan, Cong,Tian, Feng,McPhaden, Michael J.,Wang, Fan,Hu, Shijian,&Zhang, Rong-Hua.(2022).Zonal Structure of Tropical Pacific Surface Salinity Anomalies Affects ENSO Intensity and Asymmetry.GEOPHYSICAL RESEARCH LETTERS,49(1),10. |
| MLA | Guan, Cong,et al."Zonal Structure of Tropical Pacific Surface Salinity Anomalies Affects ENSO Intensity and Asymmetry".GEOPHYSICAL RESEARCH LETTERS 49.1(2022):10. |
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| Geophysical Research（5259KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 浏览 | |
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