Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 8, issue 10
Articles | Volume 8, issue 10
https://doi.org/10.5194/gmd-8-3393-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/gmd-8-3393-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 8, issue 10
Development and technical paper
 | 
28 Oct 2015
Development and technical paper |  | 28 Oct 2015

Influence of grid aspect ratio on planetary boundary layer turbulence in large-eddy simulations

S. Nishizawa, H. Yashiro, Y. Sato, Y. Miyamoto, and H. Tomita

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Short summary
The influence of the large grid aspect ratio of horizontal to vertical grid spacing traditionally used in meteorological large-eddy simulations on simulated turbulence is investigated with a series of sensitivity tests with various grid configurations. We confirmed that the grid aspect ratio should be taken into account in the sub-grid scale model to reproduce the theoretical energy spectrum. We also found that the grid aspect ratio has an influence on the turbulent statistics.
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