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For RRM grids, SQuadGen should be used (available in a separate repository on Github here). This will be documented in another page (TODO). See Generate the Grid Mesh (Exodus) File for a new Regionally-Refined Grid for details and examples.

The Exodus file contains only information about the position of the spectral element on the sphere. For SE aware utilities such as TempestRemap, they can use the polynomial order and the reference element map to fill in necessary data such as the locations of the nodal GLL points. For non-SE aware utilities, we need additional meta data, described in the next section.   

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• land grid descriptor file in SCRIP format 

• ESMF_RegridWeightGen

• geographic distribution for each land surface type along with grid descriptor files for each of those surface types

• mkmapdata.sh (found in components/clm/tools/shared/mkmapdata/)

• mksurfdata.pl (found in components/clm/tools/clm4_5/mksurfdata_map/)

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Tools we should create tests for:

1. TempestRemap for generating uniform grids
   (in Paul’s external git repo - may have its own tests?)

2. SQuadGen for generating RRM grids
   (in Paul’s external repo - may have its own tests?)

3. No longer needed:   run_dualgrid.sh to obtain scrip and latlon files 
   (in PreAndPostProcessingScripts repo; uses a matlab file).  

4. makegrid.job for generating dualgrid and latlon files (in components/homme/tests/template, may have its own tests?)

   1. Replaced by "homme_tool", tests added 2020/5

5. smoothtopo.job for applying dycore-specific smoothing to topography (in components/homme/tests/template, may have its own tests?)

   1. Replaced by "homme_tool", tests added, 2020/5

6. run ncremap (an NCO command) to generate mapping files

7. components/cam/tools/topo_tool/cube_to_target

8. cime/tools/mapping/gen_domain_files

9. mksurfdata.pl to generate the namelist needed to make fsurdat file

10. use mksurfdata_map for fsurdat

11. use the interpic_new tool to regrid atmos state to new grid for initial condition

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