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Quantifying the Contribution of Mesoscale Eddies to Global Internal Wave-Driven Turbulent Mixing

文献类型：期刊论文

作者Chen, Yongqiang2,4,5; Liu, Chuanyu2,4,5,6; Wang, Fan2,4,5,6; Koehl, Armin1; Huang, Rui Xin3
刊名JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
出版日期2025-08-17
卷号130期号:8页码:22
关键词turbulent mixing mesoscale eddy near inertial waves internal tides
ISSN号2169-9275
DOI10.1029/2025JC022416
通讯作者Liu, Chuanyu(chuanyu.liu@qdio.ac.cn) ; Wang, Fan(fwang@qdio.ac.cn)
英文摘要Direct observations revealed that internal wave-driven turbulent mixing is enhanced by oceanic mesoscale eddies. However, the contribution of mesoscale eddies to turbulent mixing on a global scale has been elusive. In this study, we synthesize the Argo-profile-based internal wave-driven turbulence kinetic energy dissipation rate (epsilon IW ${\varepsilon }_{IW}$) across the global ocean with the corresponding satellite-altimetry-based ocean surface mesoscale eddy kinetic energy (E), which allows us to determine the quantitative relationship between epsilon IW ${\varepsilon }_{IW}$ and E, thereby quantifying mesoscale eddies' contribution to epsilon IW ${\varepsilon }_{IW}$ on a global scale in the ocean's subsurface to middle layers (250-2,000 m). Our analysis reveals a nearly linear relationship between epsilon IW ${\varepsilon }_{IW}$ and E on logarithmic scales. The sensitivity of epsilon IW ${\varepsilon }_{IW}$ to E, characterized by the linear regression coefficient of the linear relationship, is influenced by environmental factors, exhibiting high sensitivity in regions with active near-inertial winds, low internal tide activity, and weak stratification. These results indicate that mesoscale eddies play a relatively minor role in internal tide-induced dissipation but a more prominent role in enhancing dissipation associated with near-inertial waves. Using this relationship, we estimated the contribution of mesoscale eddies to epsilon IW ${\varepsilon }_{IW}$ at each Argo location and found that they contribute approximately 18.5% (similar to 0.036 TW) to the total epsilon IW ${\varepsilon }_{IW}$ (similar to 0.195 TW) in the subsurface to middle layers globally. In regions with high E, the contribution exceeds 50%. These findings provide valuable insights for developing eddy-involved internal wave-driven turbulent mixing parameterization schemes in numerical models.
WOS关键词KINETIC-ENERGY ; GRAVITY-WAVES ; FINESCALE PARAMETERIZATIONS ; OCEAN ; WIND ; EDDY ; DISSIPATION ; PROPAGATION ; IMPACTS ; MODEL
资助项目National Natural Science Foundation of China ; Key Research Program of Laoshan Laboratory (LSL)[2022LSL010302] ; [42430403] ; [42090044]
WOS研究方向Oceanography
语种英语
WOS记录号WOS:001551511500001
出版者AMER GEOPHYSICAL UNION
源URL[http://ir.qdio.ac.cn/handle/337002/203113]  
专题海洋研究所_海洋环流与波动重点实验室
通讯作者Liu, Chuanyu; Wang, Fan
作者单位1.Univ Hamburg, Inst Oceanog Ifm, Ctr Earth Syst Res & Sustainabil CEN, Hamburg, Germany
2.Univ Chinese Acad Sci UCAS, Coll Earth & Planetary Sci, Beijing, Peoples R China
3.Woods Hole Oceanog Inst, Dept Phys Oceanog, Woods Hole, MA USA
4.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Observat & Forecasting, Qingdao, Peoples R China
6.Laoshan Lab, Qingdao, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Yongqiang,Liu, Chuanyu,Wang, Fan,et al. Quantifying the Contribution of Mesoscale Eddies to Global Internal Wave-Driven Turbulent Mixing[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2025,130(8):22.
APA Chen, Yongqiang,Liu, Chuanyu,Wang, Fan,Koehl, Armin,&Huang, Rui Xin.(2025).Quantifying the Contribution of Mesoscale Eddies to Global Internal Wave-Driven Turbulent Mixing.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,130(8),22.
MLA Chen, Yongqiang,et al."Quantifying the Contribution of Mesoscale Eddies to Global Internal Wave-Driven Turbulent Mixing".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 130.8(2025):22.

入库方式： OAI收割

来源：海洋研究所

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