Role of submesoscale processes in the isopycnal mixing associated with subthermocline eddies in the Philippine Sea
文献类型：期刊论文
| 作者 | Wang, Qingye1,2,3; Pang, Chongguang1,2,3; Dong, Changming4 |
| 刊名 | DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 202页码:9 |
| 关键词 | Submesoscale process Isopycnal mixing Subthermocline eddies Philippine sea |
| ISSN号 | 0967-0645 |
| DOI | 10.1016/j.dsr2.2022.105148 |
| 通讯作者 | Wang, Qingye(wangqy@qdio.ac.cn) |
| 英文摘要 | Submesoscale processes are very typical in the ocean interior with a front formed by mesoscale eddies, and contribute to ocean mixing. However, the role of submesoscale processes in the isopycnal mixing associated with ocean eddies has never been explored from observations. Based on hourly velocity and temperature data from the mooring at 8.5??N, 130??E between 26 September 2015 and 22 December 2016, this study provides the horizontal eddy diffusivity using a mixing-length framework and a parameterization related to the Rhines scale, and estimates the contribution of submesoscale processes to isopycnal mixing for the first time. The subthermocline eddies in the Philippine Sea exist between 200 m and 800 m depth, have characteristic speeds of 0.1???0.5 m/s with a typical period of 40???100 days, and can cause the temperature fluctuation of -0.5 ??C. The horizontal diffusivity due to subthermocline eddies is about 4000???11,000 m2/s, and has a significant maximum near -400 m depth but the horizontal diffusivity associated with mixing length gradually increases below -700 m. The submesoscale processes can change the current velocity and temperature by -5 cm/s and -0.1 ??C, respectively. The submesoscale processes in the ocean interior can increase the isopycnal mixing associated with subthermocline eddies by about 6???7%. The profile of horizontal eddy diffusivity derived in this study is useful for parameterization of ocean eddies and submesoscale processes in the Philippine Sea in coarse-resolution ocean models. |
| 资助项目 | National Key Research andDevelopment Program of China[2017YFA0604102] ; National Natural Science Foundation of China[41976011] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42010102] |
| WOS研究方向 | Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000840332800003 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/179931]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Wang, Qingye |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Qingdao 266237, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Nanjing Univ Informat Sci & Technol, Sch Marine Sci, Nanjing 210044, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Qingye,Pang, Chongguang,Dong, Changming. Role of submesoscale processes in the isopycnal mixing associated with subthermocline eddies in the Philippine Sea[J]. DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY,2022,202:9. |
| APA | Wang, Qingye,Pang, Chongguang,&Dong, Changming.(2022).Role of submesoscale processes in the isopycnal mixing associated with subthermocline eddies in the Philippine Sea.DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY,202,9. |
| MLA | Wang, Qingye,et al."Role of submesoscale processes in the isopycnal mixing associated with subthermocline eddies in the Philippine Sea".DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY 202(2022):9. |
入库方式： OAI收割
来源：海洋研究所
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