Effects of Temperature and Salinity on Surface Currents in the Equatorial Pacific
文献类型：期刊论文
| 作者 | Chen, Lu1,5; Zhang, Rong-Hua1,2,3,4,5 ; Gao, Chuan1,3,4
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| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
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| 出版日期 | 2022-04-01 |
| 卷号 | 127期号:4页码:22 |
| 关键词 | the equatorial Pacific surface currents OSCAR product temperature and salinity effects |
| ISSN号 | 2169-9275 |
| DOI | 10.1029/2021JC018175 |
| 通讯作者 | Zhang, Rong-Hua(rzhang@qdio.ac.cn) |
| 英文摘要 | Surface currents in the equatorial Pacific play a key role in determining thermohaline structures in the upper ocean, thus acting to modulate the tropical Pacific mean state and interannual variability. In turn, the thermohaline structure and its variability can also affect surface currents by changing ocean density and pressure gradients. Currently, the thermohaline effects on the surface currents have not been well understood, especially for the salinity role. In this study, the thermohaline effects on surface currents in the equatorial Pacific are systematically evaluated based on an analytical scheme, which is used to calculate surface currents in producing the Ocean Surface Current Analysis Real-time (OSCAR) product. Several calculations are performed with the original OSCAR-based scheme and an improved scheme including the salinity effect. It is demonstrated that the thermohaline effects are generally dominated by the temperature role, but the salinity effect plays a non-negligible role near the dateline and in the far eastern Pacific. The thermohaline effects are quantified and highlighted on seasonal and interannual time scales. For annual mean surface currents, temperature and salinity effects work together to weaken zonal currents north of the equator, with their reduced amplitude by about half. Seasonally, the thermohaline effects are dominant in spring due to the weakened wind effect. Interannually, the salinity effect explains up to 25% of the total variance in the far eastern equatorial Pacific. This study highlights the substantial contributions of thermohaline anomalies to surface current variabilities, in which salinity can play an important contributing role. |
| 资助项目 | National Natural Science Foundation of China (NSFC)[42030410] ; National Natural Science Foundation of China (NSFC)[41690122(41690120)] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19060102] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB 40000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB 42000000] ; NSFC[42176032] |
| WOS研究方向 | Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000786284400001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/178786]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Zhang, Rong-Hua |
| 作者单位 | 1.Chinese Acad Sci, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Qingdao, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Ctr Ocean Megasci, Qingdao, Peoples R China 5.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Lu,Zhang, Rong-Hua,Gao, Chuan. Effects of Temperature and Salinity on Surface Currents in the Equatorial Pacific[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2022,127(4):22. |
| APA | Chen, Lu,Zhang, Rong-Hua,&Gao, Chuan.(2022).Effects of Temperature and Salinity on Surface Currents in the Equatorial Pacific.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,127(4),22. |
| MLA | Chen, Lu,et al."Effects of Temperature and Salinity on Surface Currents in the Equatorial Pacific".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 127.4(2022):22. |
入库方式： OAI收割
来源：海洋研究所
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