Assessment of fine-scale parameterizations at low latitudes of the North Pacific
Liang, CR; Shang, XD; Qi, YF; Chen, GY; Yu, LH; xdshang@scsio.ac.cn
2018
发表期刊SCIENTIFIC REPORTS
卷号8页码:-10281
摘要Fine-scale parameterizations based on shear and stratification are widely used to study the intensity and spatial distribution of turbulent diapycnal mixing in the ocean. Two well-known fine-scale parameterizations, Gregg-Henyey-Polzin (GHP) parameterization and MacKinnon-Gregg (MG) parameterization, are assessed with the full-depth microstructure data obtained in the North Pacific. The GHP parameterization commonly used in the open ocean succeeds in reproducing the dissipation rates over smooth topography but fails to predict the turbulence over rough topography. Failure of GHP parameterization over rough topography is attributed to the deviation of internal wave spectrum from the Garrett-Munk (GM) spectrum. The internal wave field over rough topography is characterized by energetic intermediate-scale and small-scale internal waves that are not described well by the GM model. The MG parameterization that is widely used in coastal environments is found to be successful in reproducing the dissipation rates over both smooth and rough topographies. The efficacy of GHP and MG parameterizations in evaluating the dissipation rates has been assessed. The result indicates that MG parameterization predicts the magnitude and variability of the dissipation rates better than the GHP parameterization.
部门归属[Liang, Chang-Rong; Shang, Xiao-Dong; Qi, Yong-Feng; Chen, Gui-Ying; Yu, Ling-Hui] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China
学科领域Science & Technology - Other Topics
资助项目LTO
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/17057
专题热带海洋环境国家重点实验室(LTO)
通讯作者xdshang@scsio.ac.cn
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GB/T 7714
Liang, CR,Shang, XD,Qi, YF,et al. Assessment of fine-scale parameterizations at low latitudes of the North Pacific[J]. SCIENTIFIC REPORTS,2018,8:-10281.
APA Liang, CR,Shang, XD,Qi, YF,Chen, GY,Yu, LH,&xdshang@scsio.ac.cn.(2018).Assessment of fine-scale parameterizations at low latitudes of the North Pacific.SCIENTIFIC REPORTS,8,-10281.
MLA Liang, CR,et al."Assessment of fine-scale parameterizations at low latitudes of the North Pacific".SCIENTIFIC REPORTS 8(2018):-10281.
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