An energy-constrained profile parameterization of shear-driven turbulence in the interior ocean
文献类型：期刊论文
| 作者 | Lu, Lei3,4,5; Liu, Chuanyu2,3,4,5; Huang, Rui Xin1; Wang, Fan2,3,4,5 |
| 刊名 | FRONTIERS IN MARINE SCIENCE
 |
| 出版日期 | 2025-11-07 |
| 卷号 | 12页码:15 |
| 关键词 | turbulent mixing large-eddy simulation shear instability energy constraint parameterization |
| DOI | 10.3389/fmars.2025.1615741 |
| 通讯作者 | Liu, Chuanyu(chuanyu.liu@qdio.ac.cn) |
| 英文摘要 | This paper proposes an energy-constrained profile parameterization of both turbulent kinetic energy dissipation rate (& varepsilon;) and vertical diffusivity (kappa), for shear instability-induced turbulence that is initiated in an initial unstable layer (IUL) where the gradient Richardson number Ri is an element of (0, 0.25). Large-eddy simulation (LES) experiments provide the data of turbulent processes originating from Kelvin-Helmholtz instability of varied initial shear conditions. The energy-constrained framework posits & varepsilon; and kappa as proportional to Ka and tau-1, where Ka represents available kinetic energy, measuring the released kinetic energy, tau denotes turbulence evolution timescale. Both are determinable by the thickness of IUL ( h0), buoyancy frequency ( N0), vertical shear ( S0), and Richardson number ( Ri0) of the IUL. Notably, unlike conventional schemes that parameterize turbulent mixing for single model grid point layer by layer, the present scheme parameterizes the turbulent mixing not only for the grid point(s) of IUL, but also for all the model grid points that are within a determined vertical turbulent penetration layer, by providing a profile of diffusivity. Therefore, the scheme is termed the energy-constrained profile parameterization (EPP). EPP aligns well with the LES results and direct microstructure measurements, outperforming existing parameterizations. |
| WOS关键词 | LARGE-EDDY-SIMULATION ; KELVIN-HELMHOLTZ ; EFFICIENCY ; STABILITY ; DIFFUSION ; NUMBER ; INSTABILITY ; STATISTICS ; EQUATOR ; MODELS |
| 资助项目 | National Natural Science Foundation of China[42430403] ; Key Research Program of Laoshan Laboratory (LSL)[2022LSL010302] ; National Key R&D Program of China[2022YFF0801404] |
| WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:001619456500001 |
| 出版者 | FRONTIERS MEDIA SA |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/204217]  |
| 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 |
| 作者单位 | 1.Woods Hole Oceanog Inst, Dept Phys Oceanog, Woods Hole, MA USA 2.Laoshan Lab, Qingdao, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 5.Chinese Acad Sci, Key Lab Ocean Observat & Forecasting, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Lei,Liu, Chuanyu,Huang, Rui Xin,et al. An energy-constrained profile parameterization of shear-driven turbulence in the interior ocean[J]. FRONTIERS IN MARINE SCIENCE,2025,12:15. |
| APA | Lu, Lei,Liu, Chuanyu,Huang, Rui Xin,&Wang, Fan.(2025).An energy-constrained profile parameterization of shear-driven turbulence in the interior ocean.FRONTIERS IN MARINE SCIENCE,12,15. |
| MLA | Lu, Lei,et al."An energy-constrained profile parameterization of shear-driven turbulence in the interior ocean".FRONTIERS IN MARINE SCIENCE 12(2025):15. |
入库方式： OAI收割
来源：海洋研究所
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