| ZHANG Yanwei,TIAN Jiwei,XIE Lingling. 2009. Estimation of eddy viscosity on the South China Sea shelf with adjoint assimilation method. Acta Oceanologica Sinica, (5):9－16 |
| Estimation of eddy viscosity on the South China Sea shelf with adjoint assimilation method |
| Estimation of eddy viscosity on the South China Sea shelf with adjoint assimilation method |
| Received:September 23, 2008 Revised:July 17, 2009 |
| DOI： |
| Key words:the SCS eddy viscosity near-inertial Ekman Model adjoint assimilation |
| 中文关键词: the SCS eddy viscosity near-inertial Ekman Model adjoint assimilation |
| 基金项目:The National Key Basic Research Program of China under contract No. 2005CB422303;the International Cooperation Program Project under contract No. 2004DFB02700;the National Natural Science Foundation of China under contract No. 40552002 |
| Author Name | Affiliation | E-mail | | ZHANG Yanwei | Physical Oceanography Laboratory, Ocean University of China, Qingdao 266003, China | ZHANG Yanwei,E-mail:ywzhang@tongji.edu.cn | | TIAN Jiwei | Physical Oceanography Laboratory, Ocean University of China, Qingdao 266003, China | | | XIE Lingling | Physical Oceanography Laboratory, Ocean University of China, Qingdao 266003, China | |
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| Abstract: |
| The eddy viscosity of the ocean is an important parameter indicating the small-scale mixing process in the oceanic interior water column.Ekman wind-driven current model and adjoint assimilation technique are used to calculate the vertical profiles of eddy viscosity by fitting model results to the observation data.The data used in the paper include observed wind data and ADCP data obtained at Wenchang Oil Rig on the SCS (the South China Sea) shelf in August 2002.Different simulations under different wind conditions are analyzed to explore how the eddy viscosity develops with varying wind field.The results show that the eddy viscosity endured gradual variations in the range of 10-3-10-2 m2/s during the periods of wind changes.The mean eddy viscosity undergoing strong wind could rise by about 25% as compared to the value under weak wind. |
| 中文摘要: |
| The eddy viscosity of the ocean is an important parameter indicating the small-scale mixing process in the oceanic interior water column.Ekman wind-driven current model and adjoint assimilation technique are used to calculate the vertical profiles of eddy viscosity by fitting model results to the observation data.The data used in the paper include observed wind data and ADCP data obtained at Wenchang Oil Rig on the SCS (the South China Sea) shelf in August 2002.Different simulations under different wind conditions are analyzed to explore how the eddy viscosity develops with varying wind field.The results show that the eddy viscosity endured gradual variations in the range of 10-3-10-2 m2/s during the periods of wind changes.The mean eddy viscosity undergoing strong wind could rise by about 25% as compared to the value under weak wind. |
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