Preprints
https://doi.org/10.5194/gmdd-7-4119-2014
https://doi.org/10.5194/gmdd-7-4119-2014

Submitted as: development and technical paper 26 Jun 2014

Submitted as: development and technical paper | 26 Jun 2014

Review status: this preprint has been withdrawn by the authors.

Development and evaluation of a hydrostatic dynamical core using the spectral element/discontinuous Galerkin methods

S.-J. Choi1 and F. X. Giraldo2 S.-J. Choi and F. X. Giraldo
  • 1Korea institute of atmospheric prediction systems, Seoul, Korea
  • 2Naval Postgraduate School, Monterey, USA

Abstract. In this paper, we present a dynamical core for the atmospheric primitive hydrostatic equations using a unified formulation of spectral element (SE) and discontinuous Galerkin (DG) methods in the horizontal direction with a finite difference (FD) method in the radial direction. The CG and DG horizontal discretization employs high-order nodal basis functions associated with Lagrange polynomials based on Gauss–Lobatto–Legendre (GLL) quadrature points, which define the common machinery. The atmospheric primitive hydrostatic equations are solved on the cubed-sphere grid using the flux form governing equations in a three-dimensional (3-D) Cartesian space. By using Cartesian space, we can avoid the pole singularity problem due to spherical coordinates and this also allows us to use any quadrilateral-based grid naturally. In order to consider an easy way for coupling the dynamics with existing physics packages, we use a FD in the radial direction. The models are verified by conducting conventional benchmark test cases: the Rossby–Haurwitz wavenumber 4, Jablonowski–Williamson tests for balanced initial state and baroclinic instability, and Held–Suarez tests. The results from those tests demonstrate that the present dynamical core can produce numerical solutions of good quality comparable to other models.

This preprint has been withdrawn.

S.-J. Choi and F. X. Giraldo

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

S.-J. Choi and F. X. Giraldo

S.-J. Choi and F. X. Giraldo

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This preprint has been withdrawn.