Smooth QU/Icos meshes

compass/ocean/tests/global_ocean/mesh/qu/qu.cfg

@@ -27,26 +27,33 @@ transition_levels = 28
 # Maximum allowed Haney number for configurations with ice-shelf cavities
 rx1_max = 10
 
+# the number of iterations of topography smoothing
+topo_smooth_num_passes = 1
+# The distance in km over which the Gaussian filter is applied
+topo_smooth_distance_limit = 200.0
+# The standard deviation in km of the Gaussian filter
+topo_smooth_std_deviation = 100.0
+
 ## metadata related to the mesh
 # the prefix (e.g. QU, EC, WC, SO)
 prefix = QU
 
 # a description of the mesh
 mesh_description = MPAS quasi-uniform mesh for E3SM version ${e3sm_version} at
                    ${min_res}-km global resolution with <<<levels>>> vertical
-                   level
-
+                   levels.  Topography has been smoothed over ~100 km using a
+                   Gaussian filter.
 # E3SM version that the mesh is intended for
 e3sm_version = 3
 # The revision number of the mesh, which should be incremented each time the
 # mesh is revised
-mesh_revision = 2
+mesh_revision = 4
 # the minimum (finest) resolution in the mesh
 min_res = ${qu_resolution}
 # the maximum (coarsest) resolution in the mesh, can be the same as min_res
 max_res = ${qu_resolution}
 # The URL of the pull request documenting the creation of the mesh
-pull_request = https://github.com/MPAS-Dev/compass/pull/691
+pull_request = https://github.com/MPAS-Dev/compass/pull/734
 
 # the resolution of the QU or Icos mesh in km
 qu_resolution = 30