Preprints
https://doi.org/10.5194/egusphere-2024-609
https://doi.org/10.5194/egusphere-2024-609
22 Mar 2024
 | 22 Mar 2024

Study on the influence of topography on wind shear-numerical simulation based on WRF-CALMET

Xingyu Wang, Yuhong Lei, Baolong Shi, Zhiyi Wang, Xu Li, and Jinyan Wang

Abstract. This study focuses on the critical issue of low-altitude wind shear, vital for aircraft safety during takeoff and landing. Using the WRF-CALMET model, we assess the impact of topography on low-level wind shear at Zhongchuan Airport. CALMET outperforms WRF, showing improved simulation accuracy. CALMET's simulation highlights diurnal variations in vertical wind shear, especially pronounced from 13:00 to 24:00. Notably, CALMET indicates 1–2 hazard levels higher wind shear for aircraft operations compared to WRF in a significant area. Terrain sensitivity experiments reveal CALMET's responsiveness to terrain changes during high wind shear periods, with reduced impact at higher altitudes. CALMET's incorporation of kinematic terrain influences, blocking effects, slope flow, and strengthened diversion of near-surface airflow on complex terrain contribute to these findings. This study confirms the efficacy of CALMET in simulating low-altitude wind shear, emphasizing its superiority in capturing terrain influences and reducing the aviation safety threat posed by low-altitude wind shear.

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Journal article(s) based on this preprint

16 Sep 2024
Study on the influence of topography on wind shear numerical simulations based on WRF–CALMET
Xingyu Wang, Yuhong Lei, Baolong Shi, Zhiyi Wang, Xu Li, and Jinyan Wang
Geosci. Instrum. Method. Data Syst., 13, 277–287, https://doi.org/10.5194/gi-13-277-2024,https://doi.org/10.5194/gi-13-277-2024, 2024
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The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.

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This study, employing the WRF-CALMET model, investigates the impact of terrain near Zhongchuan...
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