Add a step for smoothing topograpy #888
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We remap the topography once without smoothing and then once with smoothing. The unsmoothed topography is used to determine the land mask, thus allowing many meshes with different levels of smoothing to have the same mapping files in E3SM. For the time being, only two simple types of smoothing are supported: a smoothing over a fixed distance or by expanding cells by a fixed fraction. (The two types of smoothing can also be used at the same time.) In the future, maps with non-uniform smoothing could be added for finer control. A check use used to bypass the second smoothing pass if, in fact, no smoothing is requested (the default behavior).
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We remap the topography once without smoothing and then once with smoothing. The unsmoothed topography is used to determine the land mask, thus allowing many meshes with different levels of smoothing to have the same mapping files in E3SM.
For the time being, only two simple types of smoothing are supported: a smoothing over a fixed distance or by expanding cells by a fixed fraction. (The two types of smoothing can also be used at the same time.)
In the future, maps with non-uniform smoothing could be added for finer control.
A check is used to bypass the second smoothing pass if, in fact, no smoothing is requested (the default behavior).
Checklist
api.rst) has any new or modified class, method and/or functions listedTestingin this PR) any testing that was used to verify the changes