Effects of Stokes production on summer ocean shelf dynamics

ZHANG Xuefeng; HAN Guijun; WANG Xidong; ZHANG Lianxin

doi:10.1007/s13131-014-0424-7

Effects of Stokes production on summer ocean shelf dynamics

doi: 10.1007/s13131-014-0424-7

Key Laboratory of Marine Environmental Information Technology, State Oceanic Administration, Tianjin 300171, China;National Marine Data and Information Service, State Oceanic Administration, Tianjin 300171, China

基金项目: The National Basic Research Program of China under contract No. 2013CB430304; the National Natural Science Foundation of China under contract Nos 41030854, 41106005, 41176003 and 41206178; and the National Science and Technology Support Program of China under contract No. 2011BAC03B02-01.

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- 收稿日期: 2013-02-08
- 修回日期: 2013-05-22

Effects of Stokes production on summer ocean shelf dynamics

Key Laboratory of Marine Environmental Information Technology, State Oceanic Administration, Tianjin 300171, China;National Marine Data and Information Service, State Oceanic Administration, Tianjin 300171, China

摘要

摘要: A two-dimensional numerical model, which is configured on the basis of Princeton ocean model (POM), is used to study the effect of Stokes production (SP) of the turbulent kinetic energy on a density profile and Ekman transport in an idealized shelf region in summer. The energy input from SP is parameterized and included into the Mellor-Yamada turbulence closure sub model. Results reveal that the intensity of wind-driven upwelling fronts near the sea surface isweakened by the SP-associated turbulent kinetic energy input. The vertical eddy viscosity coefficient in the surface boundary layer is enhanced greatly owing to the impact of SP,which decreases the alongshore velocity and changes the distributionof upwelling. In addition, the SP-induced mixing easily suppresses the strong stratification and significantly increases the depth of the uppermixed layer (ML) under strong winds.
- Stokesproduction /
- POM /
- uppermixedlayer /
- upwelling
Abstract: A two-dimensional numerical model, which is configured on the basis of Princeton ocean model (POM), is used to study the effect of Stokes production (SP) of the turbulent kinetic energy on a density profile and Ekman transport in an idealized shelf region in summer. The energy input from SP is parameterized and included into the Mellor-Yamada turbulence closure sub model. Results reveal that the intensity of wind-driven upwelling fronts near the sea surface isweakened by the SP-associated turbulent kinetic energy input. The vertical eddy viscosity coefficient in the surface boundary layer is enhanced greatly owing to the impact of SP,which decreases the alongshore velocity and changes the distributionof upwelling. In addition, the SP-induced mixing easily suppresses the strong stratification and significantly increases the depth of the uppermixed layer (ML) under strong winds.
- Stokes production /
- POM /
- uppermixed layer /
- upwelling

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Effects of Stokes production on summer ocean shelf dynamics

doi: 10.1007/s13131-014-0424-7

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Effects of Stokes production on summer ocean shelf dynamics

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