def get_grid_spec(model_name):
return _get_model_info(model_name)<EOL>
Pass-through to look-up the grid specifications for a given GEOS-Chem
configuration.

Parameters
----------
model_name : str
    Name of the model; variations in naming format are permissible, e.g.
    "GEOS5" can be requested as "GEOS-5" or "GEOS_5".
resolution : tuple of floats
    Longitude x latitude resolution of the model.

Returns
-------
grid_spec : dict
    Critical grid information as items in a dictionary.