Impacts of the horizontal and vertical grids on the numerical solutions of the dynamical equations – Part 2: Quasi-geostrophic Rossby modes

Konor, Celal S.; Randall, David A.

doi:https://doi.org/10.5194/gmd-11-1785-2018

Articles | Volume 11, issue 5

https://doi.org/10.5194/gmd-11-1785-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-11-1785-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 11, issue 5

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 2: Quasi-geostrophic Rossby modes

Celal S. Konor and David A. Randall

Supplement

https://doi.org/10.5194/gmd-11-1785-2018-supplement

Data sets

Codes and data used for plotting some figures in Konor and Randall C. Konor https://doi.org/10.5281/zenodo.1117930

Short summary

We have discussed the effects of discretization on dispersion of midlatitude Rossby waves on the A, B, C, CD, (DC), D, E and Z horizontal grids, and the L and CP vertical grids. The Z, C, D and CD (DC) grids generate similar dispersion of the baroclinic and barotropic Rossby modes. The A, E and B grids generate multiple (non-unique) solutions. The modes with the smallest resolvable vertical scale on the L grid do not retrograde. The CP-grid solutions are much more accurate than the L grid.