code: def from_model(cls, model_name, **kwargs):
          
          settings = _get_model_info(model_name)
          model = settings.pop('model_name')
          for k, v in list(kwargs.items()):
              if k in ('resolution', 'Psurf'):
                  settings[k] = v
  
          return cls(model, **settings)
docs: Define a grid using the specifications of a given model.
  
          Parameters
          ----------
          model_name : string
              Name the model (see :func:`get_supported_models` for available
              model names).
              Supports multiple formats (e.g., 'GEOS5', 'GEOS-5' or 'GEOS_5').
          **kwargs : string
              Parameters that override the model  or default grid
            settings (See Other Parameters below).
  
          Returns
          -------
          A :class:`CTMGrid` object.
  
          Other Parameters
          ----------------
          resolution : (float, float)
              Horizontal grid resolution (lon, lat) or (DI, DJ) [degrees]
          Psurf : float
              Average surface pressure [hPa] (default: 1013.15)
  
          Notes
          -----
          Regridded vertical models may have several valid names (e.g.,
          'GEOS5_47L' and 'GEOS5_REDUCED' refer to the same model).