A nonhydrostatic unstructured-mesh soundproof model for simulation of internal gravity waves
A semi-implicit edge-based unstructured-mesh model is developed that integrates nonhydrostatic soundproof equations, inclusive of anelastic and pseudo-incompressible systems of partial differential equations. The model builds on nonoscillatory forward-in-time MPDATA approach using finite-volume discretization and unstructured meshes with arbitrarily shaped cells. Implicit treatment of gravity waves benefits both accuracy and stability of the model. The unstructured-mesh solutions are compared to equivalent structured-grid results for intricate, multiscale internal-wave phenomenon of a non-Boussinesq amplification and breaking of deep stratospheric gravity waves. The departures of the anelastic and pseudoincompressible results are quantified in reference to a recent asymptotic theory
document
http://n2t.net/ark:/85065/d79p329t
eng
geoscientificInformation
Text
publication
2016-01-01T00:00:00Z
publication
2001-12-01T00:00:00Z
Copyright 2011 Springer.
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