International Conference and Early Career Scientists School on Environmental Observations, Modelling and Information Systems | |
A numerical study of gravity waves in the atmosphere: smooth and steep orography effects | |
生态环境科学;计算机科学 | |
Yudin, M.S.^1 | |
Institute of Computational Mathematics and Mathematical Geophysics, SB RAS, 6, Akademika Lavrentieva pr., Novosibirsk | |
630090, Russia^1 | |
关键词: Co-ordinate transformation; Finite difference model; Meteorological effects; Meteorological models; Non-hydrostatic; Semi-Lagrangian; Terrain following; Triangular elements; | |
Others : https://iopscience.iop.org/article/10.1088/1755-1315/48/1/012024/pdf DOI : 10.1088/1755-1315/48/1/012024 |
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来源: IOP | |
【 摘 要 】
Two types of nonhydrostatic meteorological models are applied to modeling of front wave propagation: a finite-difference model based on a terrain-following coordinate transformation and a finite-element model based on triangular elements. The former is used for a relatively smooth orography, and the latter for steep surfaces. The front surface is described in both models by an equation for advection of a scalar substance, which is solved with a third- order semi-Lagrangian procedure. Various meteorological effects, the influence of stratification and the introduction of an inversion layer above an orographic obstacle are investigated and discussed.
【 预 览 】
Files | Size | Format | View |
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A numerical study of gravity waves in the atmosphere: smooth and steep orography effects | 745KB | download |