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DOI | 10.1038/s41467-018-02987-6 |
Latitude-dependent finescale turbulent shear generations in the Pacific tropical-extratropical upper ocean | |
Zhang, Zhiwei1,2; Qiu, Bo3; Tian, Jiwei1,2; Zhao, Wei1,2; Huang, Xiaodong1,2 | |
2018-10-05 | |
发表期刊 | NATURE COMMUNICATIONS |
ISSN | 2041-1723 |
出版年 | 2018 |
卷号 | 9 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Turbulent mixing, which is critically important for the equilibrium of ocean circulation, is controlled by finescale turbulent shear (S-2) of oceanic flows through shear instability. Although the relationship between S-2 and mixing is well understood, the latitude-dependent generation processes of S-2 remain poorly known due to the lack of geographically extensive, long-term finescale velocity measurements. Here, using one-year ADCP data from 17 moorings along 143 degrees E, we first show that the upper-ocean S-2 and its resultant mixing rate have a W-shaped latitudinal distribution in the tropical-extratropical northwest Pacific with peaks at 0-2 degrees N, 12-14 degrees N, and 20-22 degrees N, respectively. Further analyses reveal that these S-2 peaks are caused by vertically-sheared equatorial currents, parametric subharmonic instability of diurnal tide, and anticyclonic eddy's inertial chimney effect, respectively. As climate model simulations are sensitive to the mixing parameterizations, our findings highlight the need to incorporate the latitude-dependent generation mechanisms of S-2 to improve climate models' prediction capabilities. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000446493300002 |
WOS关键词 | EQUATORIAL UNDERCURRENT JETS ; NEAR-INERTIAL ENERGY ; INTERNAL WAVES ; SUBTROPICAL COUNTERCURRENT ; INSTABILITY ; SURFACE ; DISSIPATION ; PROPAGATION ; CYCLE ; WIND |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/203674 |
专题 | 资源环境科学 |
作者单位 | 1.Ocean Univ China, Phys Oceanog Lab CIMST, 238 Songling Rd, Qingdao 266100, Shandong, Peoples R China; 2.Qingdao Natl Lab Marine Sci & Technol, 238 Songling Rd, Qingdao 266100, Shandong, Peoples R China; 3.Univ Hawaii Manoa, Dept Oceanog, 1000 Pope Rd, Honolulu, HI 96822 USA |
推荐引用方式 GB/T 7714 | Zhang, Zhiwei,Qiu, Bo,Tian, Jiwei,et al. Latitude-dependent finescale turbulent shear generations in the Pacific tropical-extratropical upper ocean[J]. NATURE COMMUNICATIONS,2018,9. |
APA | Zhang, Zhiwei,Qiu, Bo,Tian, Jiwei,Zhao, Wei,&Huang, Xiaodong.(2018).Latitude-dependent finescale turbulent shear generations in the Pacific tropical-extratropical upper ocean.NATURE COMMUNICATIONS,9. |
MLA | Zhang, Zhiwei,et al."Latitude-dependent finescale turbulent shear generations in the Pacific tropical-extratropical upper ocean".NATURE COMMUNICATIONS 9(2018). |
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