Articles | Volume 11, issue 5
https://doi.org/10.5194/gmd-11-1753-2018
https://doi.org/10.5194/gmd-11-1753-2018
Methods for assessment of models
 | 
08 May 2018
Methods for assessment of models |  | 08 May 2018

Impacts of the horizontal and vertical grids on the numerical solutions of the dynamical equations – Part 1: Nonhydrostatic inertia–gravity modes

Celal S. Konor and David A. Randall

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Short summary
We have discussed the discretizations of the three-dimensional nonhydrostatic linearized anelastic equations on the A, B, C, CD, (DC), D, E and Z horizontal grids, and on the L and CP vertical grids, with an emphasis on midlatitude inertia–gravity waves. The Z and C grids show the most accurate dispersion among the seven horizontal grids. The inertia–gravity mode solutions with the D and CD grids are almost identical. The A, B and E grids suffer from the multiple (or non-unique) physical modes.