Diagnostics of diapycnal diffusivity in z-level ocean models part I: 1-Dimensional case studies
Diagnostics of diapycnal diffusivity in z-level ocean models part I: 1-Dimensional case studies
复制标题
z 级海洋模型中的二密扩散率诊断第一部分:一维案例研究
DOI:
10.1016/j.ocemod.2010.07.004
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发表时间:
2010
期刊:
影响因子:
3.2
通讯作者:
A. Oschlies
中科院分区:
文献类型:
--
作者:
Getzlaff;Nurser;A. Oschlies
Diapycnal diffusion is a key process in the ocean, responsible for water mass transformation and the conversion of kinetic energy into potential energy. Despite its widely assumed importance in controlling ocean dynamics, diapycnal diffusion is difficult to quantify both in the real ocean and in ocean models. Here we focus on z-level models, arguably the most common vertical grid scheme of current ocean general circulation models. We examine different methods to diagnose diapycnal diffusivities in z-level models. Different scenarios are investigated, including the impact of advection and vertical convergence or divergence of isopycnals. In all cases we find that the transformation from z-space to density space has to be performed very carefully in order to obtain reliable and robust estimates of diapycnal diffusivities (and the associated diapycnal fluxes). A method involving the tracer flux taken from the work of Griffies et al. (2000) seems to be most appropriate in this respect and is suggested as our method of choice for subsequent applications to 3-dimensional ocean circulation models.
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DOI:
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发表时间:
1999
期刊:
影响因子:
--
作者:
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通讯作者:
R. Huang
DOI:
--
发表时间:
1998
期刊:
影响因子:
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作者:
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DOI:
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1999
期刊:
影响因子:
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A. Oschlies;V. Garçon
通讯作者:
V. Garçon
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
J. Mignot;A. Levermann;A. Griesel
通讯作者:
A. Griesel
影响因子:
3.5
作者:
Mei;A. Coward;A. Nurser
通讯作者:
A. Nurser