Implementing diffusivities from linear stability analysis in a three-dimensional general circulation ocean model

Implementing diffusivities from linear stability analysis in a three-dimensional general circulation ocean model
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在三维大气环流海洋模型中实现线性稳定性分析的扩散性

DOI:
10.1016/j.ocemod.2012.08.001
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发表时间:
2012
期刊:
影响因子:
3.2
通讯作者:
--
中科院分区:
地球科学3区
文献类型:
--
作者:

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根据Peter D.基尔沃思使用两个理想化的数值模型作为例子,它表明,线性稳定性分析产生一致的横向和纵向结构的横向扩散系数。等密厚度或位涡扩散的参数化的基础上被证明是等效的准地转近似中的恒定扩散系数。对于空间变化的扩散系数,他们在模型实验中产生类似的结果,虽然相应的扩散系数显示不同的垂直结构。
Linear stability analysis is used to predict the vertical and lateral structure for the diffusivity related to meso-scale eddy buoyancy and potential vorticity fluxes in three-dimensional primitive equation models, following a suggestion by Peter D. Killworth. Using two idealized numerical models as example, it is shown that the linear stability analysis yields a consistent lateral and vertical structure for both lateral diffusivities. Parameterizations based on isopycnal thickness or potential vorticity diffusion are shown to be equivalent for constant diffusivities in quasi-geostrophic approximation. For spatially varying diffusivities they yield similar results in the model experiments, although the corresponding diffusivities show different vertical structure.
DOI: --
发表时间: 1973
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DOI: 10.1016/j.ocemod.2008.02.005
发表时间: 2008
期刊: Ocean Modelling
影响因子: 3.2
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DOI: --
发表时间: 2010
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