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

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

doi:https://doi.org/10.5194/gmd-8-3393-2015

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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Feb 2025	50	13	8	71
Mar 2025	46	15	1	62
Apr 2025	26	11	2	39
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Jun 2025	39	29	0	68
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Sep 2025	33	28	1	62
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Cumulative views and downloads (calculated since 04 Aug 2015)

Month	HTML	PDF	XML	Total
Aug 2015	72	64	6	142
Sep 2015	22	13	1	36
Oct 2015	47	39	1	87
Nov 2015	46	35	3	84
Dec 2015	9	14	2	25
Jan 2016	25	15	1	41
Feb 2016	13	9	1	23
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Apr 2016	8	5	0	13
May 2016	17	13	1	31
Jun 2016	17	10	2	29
Jul 2016	11	10	5	26
Aug 2016	11	13	3	27
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Jan 2017	13	12	0	25
Feb 2017	24	5	4	33
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Nov 2023	224	15	1	240
Dec 2023	59	16	4	79
Jan 2024	45	22	3	70
Feb 2024	41	24	0	65
Mar 2024	49	23	2	74
Apr 2024	58	17	2	77
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Oct 2024	26	9	0	35
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Feb 2025	50	13	8	71
Mar 2025	46	15	1	62
Apr 2025	26	11	2	39
May 2025	49	18	1	68
Jun 2025	39	29	0	68
Jul 2025	34	30	0	64
Aug 2025	26	22	0	48
Sep 2025	33	28	1	62
Oct 2025	41	24	6	71
Nov 2025	15	13	0	28

Latest update: 07 Nov 2025

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.