A time-split discontinuous galerkin transport scheme for Global Atmospheric Model

A time-split transport scheme has been developed for the high-order multiscale atmospheric model (HOMAM). The spacial discretization of HOMAM is based on the discontinuous Galerkin method, combining the 2D horizontal elements on the cubed-sphere surface and 1D vertical elements in a terrain-following height-based coordinate. The accuracy of the time-splitting scheme is tested with a set of new benchmark 3D advection problems. The split time-integrators are based on the Strang-type operator-split method. The convergence of standard error norms shows a second-order accuracy with the smooth scalar field, irrespective of a particular time- integrator. The results with the split scheme is comparable with that of the established models.

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Copyright Author(s) 2015. This work is distributed under the Creative Commons Attribution 3.0 License.
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Author Nair, Ramachandran
Bao, L.
Toy, Michael
Publisher UCAR/NCAR - Library
Publication Date 2015-07-01T00:00:00
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Topic Category geoscientificInformation
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Metadata Date 2025-07-11T22:40:08.907282
Metadata Record Identifier edu.ucar.opensky::articles:16712
Metadata Language eng; USA
Suggested Citation Nair, Ramachandran, Bao, L., Toy, Michael. (2015). A time-split discontinuous galerkin transport scheme for Global Atmospheric Model. UCAR/NCAR - Library. https://n2t.org/ark:/85065/d76w9c9z. Accessed 26 October 2025.

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