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Simulation of orographically generated waves in a nonhydrostatic model of an adiabatic atmosphere

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Abstract

Results of numerical experiments on the simulation of a flow moving around an isolated mountain are presented. The influence of the sizes of a barrier and of the flow velocity on characteristics of wave oscillations is discussed. All calculations are carried out with the authors’ two-dimensional (in the vertical plane) version of a nonhydrostatic dynamic scheme, in which equations of the dry quasi-incompressible atmosphere are solved with a semi-implicit semi-Lagrangian method. This method uses large time steps as compared to explicit-implicit Eurlerian methods. The results of calculations agree with results obtained by other authors, which gives hope for finding physically correct solutions in the simulation of nonhydrostatic processes in the atmosphere.

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Authors and Affiliations

  1. Institute of Numerical Mathematics, Russian Academy of Sciences, ul. Gubkina 8, Moscow, 119991, Russia

    R. Yu. Fadeev & M. A. Tolstykh

  2. Hydrometeorological Research Center of the Russian Federation, Bolshoi Predtechenskii per. 9-13, Moscow, 123242, Russia

    R. Yu. Fadeev & M. A. Tolstykh

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  1. R. Yu. Fadeev
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  2. M. A. Tolstykh
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Original Russian Text © R.Yu. Fadeev, M.A. Tolstykh, 2009, published in Meteorologiya i Gidrologiya, 2009, No. 9, pp. 40–59.

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Fadeev, R.Y., Tolstykh, M.A. Simulation of orographically generated waves in a nonhydrostatic model of an adiabatic atmosphere. Russ. Meteorol. Hydrol. 34, 590–603 (2009). https://doi.org/10.3103/S1068373909090040

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