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17.3 Considerations

Although additional execution time used by this option is negligible, the option may complicate subsequent analysis by the researcher. Rotated model results can be interpolated back to the geographic grid for comparison, but this may involve recalculating many diagnostics (such as zonal integrals) since all diagnostics within MOM are only computed on the rotated model grid.

**Figure 17.1:** Euler solid body rotation angles and their associated axes for rotating the MOM latitude and longitude grid.
$\begin{figure} \begin{center} \resizebox{15cm}{!}{\includegraphics{ebyrot.ps}}\end{center}\end{figure}$

RC Pacanowski and SM Griffies, GFDL, Jan 2000