Effects of stability functions in a dynamic model convective boundary layer simulation
Effects of stability functions in a dynamic model convective boundary layer simulation
复制标题
动态模型对流边界层模拟中稳定函数的影响
DOI:
10.1002/asl.1008
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发表时间:
2020
影响因子:
3
通讯作者:
Bopape M
中科院分区:
文献类型:
--
作者:
Bopape M
Dynamic subgrid models are increasingly being used in simulations of the atmospheric boundary layer. We have implemented several variant forms of dynamic models in the UK Met Office Large Eddy Model (MetLEM), including a state‐of‐the‐art Lagrangian‐Averaged‐Scale‐Dependent (LASD) model. The implementation includes optional use of stability functions in the specification of the eddy viscosity and diffusivity, as well as optional use within the dynamic calculation of the Smagorinsky parameter. This paper reports on the behaviour of the LASD model with different choices for the inclusion and treatment of stability functions in convective boundary layer simulations at different resolutions. Results are compared against a high‐resolution Large‐Eddy simulation (LES) and against simulations employing the Smagorinsky–Lilly subgrid model. We conclude that the use of stability functions improves the behaviour of the LASD model in the grey zone regime. Moreover, a careful treatment of the stability functions in the calculation of the dynamic parameters, while attractive theoretically, is found to be unnecessary in practical terms.
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影响因子:
3.1
作者:
M. Kirkpatrick;A. Ackerman;D. Stevens;N. Mansour
通讯作者:
N. Mansour
影响因子:
8.9
作者:
G. Shutts;M. E. Gray
通讯作者:
M. E. Gray
影响因子:
3
作者:
G. Efstathiou;R. Plant;Mary‐Jane M. Bopape
通讯作者:
G. Efstathiou;R. Plant;Mary‐Jane M. Bopape
影响因子:
8.9
作者:
Matthew M. Feist;C. Westbrook;P. Clark;T. Stein;H. Lean;A. Stirling
通讯作者:
Matthew M. Feist;C. Westbrook;P. Clark;T. Stein;H. Lean;A. Stirling
影响因子:
4.3
作者:
Beare, Robert J.
通讯作者:
Beare, Robert J.