Update config options for new ECwISC30to60E3r4 mesh

This mesh is the same as ECwISC30to60E3r2 but with topography
smoothing over ~3 grid cells.

compass/ocean/tests/global_ocean/mesh/ec30to60/ec30to60.cfg

@@ -26,6 +26,11 @@ 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_iterations = 65
+# the weight given to the central cell during each iteration of smoothing,
+# where the n cellsOnCell (neighbors) are given a weight (1-weight)/n.
+topo_smooth_weight = 0.6
 
 # the approximate number of cells in the mesh
 approx_cell_count = 240000
@@ -37,15 +42,16 @@ prefix = EC
 mesh_description = MPAS Eddy Closure mesh for E3SM version ${e3sm_version} with
                    enhanced resolution around the equator (30 km), South pole
                    (35 km), Greenland (${min_res} km), ${max_res}-km resolution
-                   at mid latitudes, and <<<levels>>> vertical levels
+                   at mid latitudes, and <<<levels>>> vertical levels.
+                   Topography has been smoothed over ~6 grid cell (180-360 km).
 # 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 = 30
 # the maximum (coarsest) resolution in the mesh, can be the same as min_res
 max_res = 60
 # The URL of the pull request documenting the creation of the mesh
-pull_request = https://github.com/MPAS-Dev/compass/pull/689
+pull_request = https://github.com/MPAS-Dev/compass/pull/715