globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2015MS000514
Scopus记录号: 2-s2.0-84969335400
论文题名:
Representation of topography by partial steps using the immersed boundary method in a vector vorticity equation model (VVM)
作者: Chien M; -H; , Wu C; -M
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2016
卷: 8, 期:1
起始页码: 212
结束页码: 223
语种: 英语
英文关键词: Precipitation (meteorology) ; Topography ; Turbulent flow ; Vorticity ; Additional experiments ; Characteristics of dynamics ; Cloud resolving model ; Density driven flows ; Immersed boundary methods ; Orographic precipitation ; Vertical resolution ; Vorticity equation ; Surface topography ; numerical model ; orography ; physics ; precipitation (climatology) ; slope angle ; three-dimensional modeling ; topography ; vorticity
英文摘要: In this study, representation of surface topography in the vector vorticity equation model (VVM) is updated with a partial step approach using the immersed boundary method. Compared with the full step approach, the partial step approach provides additional topography forcing to represent micro mountains while preserving the same grid structure through interpolating from adjacent grid points. It maintains the characteristics of dynamics and physics of VVM and improves the representation of gentle slope topography without increasing vertical resolution. This approach produces reasonable results on the simulation of classical mountain waves with coarse vertical resolution. Additional experiments are performed to verify our approach including density driven flow using a cold bubble and 3-D orographic precipitation over a ridge. The results show that vorticity fields in the partial step approach have a smoother response to the gentle slopes due to the improvement in the topography representation. © 2016 The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75921
Appears in Collections:影响、适应和脆弱性
气候变化与战略

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作者单位: Department of Atmospheric Sciences, National Taiwan University, Taipei, Taiwan

Recommended Citation:
Chien M,-H,, Wu C,et al. Representation of topography by partial steps using the immersed boundary method in a vector vorticity equation model (VVM)[J]. Journal of Advances in Modeling Earth Systems,2016-01-01,8(1)
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