Articles | Volume 10, issue 5
https://doi.org/10.5194/gmd-10-1961-2017
https://doi.org/10.5194/gmd-10-1961-2017
Model description paper
 | 
22 May 2017
Model description paper |  | 22 May 2017

Vorticity-divergence semi-Lagrangian global atmospheric model SL-AV20: dynamical core

Mikhail Tolstykh, Vladimir Shashkin, Rostislav Fadeev, and Gordey Goyman

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Latest update: 13 Aug 2025
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Short summary
We present the hydrostatic dynamical core of the SL-AV20 global atmosphere model used for operational numerical weather prediction in Russia. The article describes model design, particularly vorticity-divergence formulation combined with the use of an unstaggerred grid. The model has an option to use a reduced latitude-longitude grid. The results for standard tests agree well with reference solutions.
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