Transitions in surface thermal signatures during the evolution of long-lived eddies in the global ocean
文献类型：期刊论文
| 作者 | Liu, Yingjie1; Li, Xiaofeng1; Liu, Chuanyu1,2; Liu, Qian1,2
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| 刊名 | DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
 |
| 出版日期 | 2024-04-01 |
| 卷号 | 206页码:14 |
| 关键词 | Long-lived eddy Thermal signature transition Vertical structure Eddy-induced ekman pumping Mixed layer Subduction |
| ISSN号 | 0967-0637 |
| DOI | 10.1016/j.dsr.2024.104279 |
| 通讯作者 | Li, Xiaofeng(lixf@qdio.ac.cn) |
| 英文摘要 | Mesoscale eddies are quasi-circular ocean currents accompanied by dynamic and thermodynamic variations, and are classified as anticyclonic (AEs) and cyclonic eddies (CEs) according to their rotation direction. Eddies transition between surface cold CEs/surface warm AEs ("conventional" eddies) and surface warm CEs/surface cold AEs ("unconventional" eddies) during their lifetimes. However, the characteristics and mechanisms of these transitions remain unclear. In this study, satellite and in-situ data were used to explore the spatiotemporal variation and vertical structures of "conventional" and "unconventional" eddies during the evolution of long-lived eddies (>1 year) in the global ocean from 1993 to 2015. On average, long-lived eddies are "unconven-tional" for about 40% of their lifetimes, and these "unconventional" eddies are concentrated in the South Atlantic Ocean and off the western and southern coasts of Australia. "Unconventional" eddies show distinct temporal variation and subsurface temperature structures. Generally, cold AEs and warm CEs last <3 months and are more active in summer than in winter. They have cold or warm cores within the mixed layer depth of the water column, which is affected by eddy-wind interactions via eddy-induced Ekman pumping. However, some cold AEs in the South Atlantic and warm CEs in the South Indian Ocean can last for >3 months and display weak seasonal variation. In addition, their cold and warm cores can extend to similar to 200 and similar to 300 m, respectively, and are related to subduction and the Leeuwin Current System |
| WOS关键词 | MESOSCALE EDDIES ; ANTICYCLONIC EDDIES ; MIXED-LAYER ; AGULHAS RINGS ; HEAT FLUXES ; SOUTH ; ALGORITHM ; INTERPOLATION ; TRANSLATION ; SATELLITE |
| 资助项目 | National Natural Science Foundation of China[U2006211] ; National Natural Science Foundation of China[42306194] ; National Natural Science Foundation of China[LSKJ202204302] ; Natural Science Foundation of Shandong Prov- ince[ZR2020MD083] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] |
| WOS研究方向 | Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:001205092100001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/185601]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Li, Xiaofeng |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Univ Chinese Acad Sci UCAS, Coll Earth & Planetary Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Yingjie,Li, Xiaofeng,Liu, Chuanyu,et al. Transitions in surface thermal signatures during the evolution of long-lived eddies in the global ocean[J]. DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,2024,206:14. |
| APA | Liu, Yingjie,Li, Xiaofeng,Liu, Chuanyu,&Liu, Qian.(2024).Transitions in surface thermal signatures during the evolution of long-lived eddies in the global ocean.DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,206,14. |
| MLA | Liu, Yingjie,et al."Transitions in surface thermal signatures during the evolution of long-lived eddies in the global ocean".DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS 206(2024):14. |
入库方式： OAI收割
来源：海洋研究所
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