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DOI | 10.1175/JAS-D-20-0072.1 |
A k–ε Turbulence Model for the Convective Atmosphere | |
Zeng, Xiping; Wang, Yansen | |
2020-11-01 | |
发表期刊 | Journal of the Atmospheric Sciences
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出版年 | 2020 |
英文摘要 | A k–ε turbulence model for the stable atmosphere is extended for the convective atmosphere. The new model represents the buoyancy-induced increase in the kinetic energy and scale of eddies, and is consistent with the Monin–Obukhov similarity theory for convective atmospheric boundary layers (ABLs). After being incorporated into an ABL model with the Coriolis force, the model is tested by comparing the ABL model results with the Businger–Dyer (BD) relationship. ABL model simulations are carried out to reveal the sensitivity of the vertical wind profile to model parameters (e.g., the Obukhov length, friction velocity, and geostrophic wind). When the friction velocity is consistent with geostrophic wind speed (or the turbulence in the inner regime is in equilibrium with that in the outer regime), the modeled wind profile is close to the BD relationship near the ground surface. Otherwise, the modeled wind profile deviates from the BD relationship, resembling the hockey stick transition model. |
领域 | 地球科学 ; 气候变化 |
URL | 查看原文 |
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文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/301827 |
专题 | 地球科学 气候变化 |
推荐引用方式 GB/T 7714 | Zeng, Xiping,Wang, Yansen. A k–ε Turbulence Model for the Convective Atmosphere[J]. Journal of the Atmospheric Sciences,2020. |
APA | Zeng, Xiping,&Wang, Yansen.(2020).A k–ε Turbulence Model for the Convective Atmosphere.Journal of the Atmospheric Sciences. |
MLA | Zeng, Xiping,et al."A k–ε Turbulence Model for the Convective Atmosphere".Journal of the Atmospheric Sciences (2020). |
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