The page documents two python utilities to analyze E3SM map files. It checks the the key properties that can be examined by NCO (ncks --checkmapscheck_map), and several additional properties, including consistency with the land/ocean fractions induced by the flux maps.
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From https://github.com/mt5555/remap-ncl , one needs “mfa.py”, “test_fields.py” and (optionally, for map error plots) “polyplot_hv“plotpoly_mpl.py”. To run the code, one needs to specify the mapfile type (o2a, a2o, l2a, etc…), the mapfile name, the flux map name (needed to compute land/ocean partial cell fractions) and the domain.lnd file (needed to determine lfrin for the caseextract lfrin when analyzing a l2a maps).
Running the code on the l2a map map_r0125_to_ne256pg2_bilin.200212.nc, which is known to produce problems in E3SM simulations, we get:
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