| 在大洋环流模型中对应于惯性内波破碎的垂直混合的一个参数化方案 |
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| 引用本文： | 范植松,尚真琦,张善武,胡瑞金,刘海龙.在大洋环流模型中对应于惯性内波破碎的垂直混合的一个参数化方案[J].海洋学报(英文版),2015,34(1):11-22. |
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| 作者姓名： | 范植松 尚真琦 张善武 胡瑞金 刘海龙 |
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| 作者单位： | College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China,College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China,The Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China,College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China,State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China |
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| 基金项目： | The National Natural Science Foundation of China under contract No. 41275084; the Key Program of National Natural Science Foundation of China under contract No. 41030855. |
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| 摘 要： | Based on the theoretical spectral model of inertial internal wave breaking(fine structure) proposed previously, in which the effects of the horizontal Coriolis frequency component f-tilde on a potential isopycnal are taken into account, a parameterization scheme of vertical mixing in the stably stratified interior below the surface mixed layer in the ocean general circulation model(OGCM) is put forward preliminarily in this paper. Besides turbulence, the impact of sub-mesoscale oceanic processes(including inertial internal wave breaking product) on oceanic interior mixing is emphasized. We suggest that adding the inertial internal wave breaking mixing scheme(F-scheme for short) put forward in this paper to the turbulence mixing scheme of Canuto et al.( T-scheme for short) in the OGCM, except the region from 15°S to 15°N. The numerical results of F-scheme by using WOA09 data and an OGCM(LICOM, LASG/IAP climate system ocean model) over the global ocean are given. A notable improvement in the simulation of salinity and temperature over the global ocean is attained by using T-scheme adding F-scheme, especially in the mid- and high-latitude regions in the simulation of the intermediate water and deep water. We conjecture that the inertial internal wave breaking mixing and inertial forcing of wind might be one of important mechanisms maintaining the ventilation process. The modeling strength of the Atlantic meridional overturning circulation(AMOC) by using T-scheme adding F-scheme may be more reasonable than that by using T-scheme alone, though the physical processes need to be further studied, and the overflow parameterization needs to be incorporated. A shortcoming in F-scheme is that in this paper the error of simulated salinity and temperature by using T-scheme adding F-scheme is larger than that by using T-scheme alone in the subsurface layer.
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| 关 键 词： | vertical mixing inertial internal wave fine structure horizontal Coriolis frequency component ocean general circulation model |
| 收稿时间： | 5/4/2014 12:00:00 AM |
| 修稿时间： | 2014/9/10 0:00:00 |
A parameterization scheme of vertical mixing due to inertial internal wave breaking in the ocean general circulation model |
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| FAN Zhisong,SHANG Zhenqi,ZHANG Shanwu,HU Ruijin and LIU Hailong.A parameterization scheme of vertical mixing due to inertial internal wave breaking in the ocean general circulation model[J].Acta Oceanologica Sinica,2015,34(1):11-22. |
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| Authors: | FAN Zhisong SHANG Zhenqi ZHANG Shanwu HU Ruijin and LIU Hailong |
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| Institution: | 1.College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China2.The Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China3.State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | Based on the theoretical spectral model of inertial internal wave breaking (fine structure) proposed previously, in which the effects of the horizontal Coriolis frequency component f-tilde on a potential isopycnal are taken into account, a parameterization scheme of vertical mixing in the stably stratified interior below the surface mixed layer in the ocean general circulation model (OGCM) is put forward preliminarily in this paper. Besides turbulence, the impact of sub-mesoscale oceanic processes (including inertial internal wave breaking product) on oceanic interior mixing is emphasized. We suggest that adding the inertial internal wave breaking mixing scheme (F-scheme for short) put forward in this paper to the turbulence mixing scheme of Canuto et al. (T-scheme for short) in the OGCM, except the region from 15°S to 15°N. The numerical results of F-scheme by using WOA09 data and an OGCM (LICOM, LASG/IAP climate system ocean model) over the global ocean are given. A notable improvement in the simulation of salinity and temperature over the global ocean is attained by using T-scheme adding F-scheme, especially in the mid- and high-latitude regions in the simulation of the intermediate water and deep water. We conjecture that the inertial internal wave breaking mixing and inertial forcing of wind might be one of important mechanisms maintaining the ventilation process. The modeling strength of the Atlantic meridional overturning circulation (AMOC) by using T-scheme adding F-scheme may be more reasonable than that by using T-scheme alone, though the physical processes need to be further studied, and the overflow parameterization needs to be incorporated. A shortcoming in F-scheme is that in this paper the error of simulated salinity and temperature by using T-scheme adding F-scheme is larger than that by using T-scheme alone in the subsurface layer. |
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| Keywords: | vertical mixing inertial internal wave fine structure horizontal Coriolis frequency component ocean general circulation model |
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