LLCReader for GEOS/ECCO coupled nature run

[roxyboy]

Hi xmitgcm,

Would it be possible to add a class to read the GEOS/ECCO DYAMOND run (https://data.nas.nasa.gov/geosecco/geoseccodata/c1440_llc2160/) from the LLCReader?

I would naively assume that something like:

class ECCOPortalC1440_LLC2160Model(C1440_LLC2160Model):

    def __init__(self):
        fs = _make_http_filesystem()
        base_path = 'https://data.nas.nasa.gov/geosecco/geoseccodata/c1440_llc2160/mit_output/Eta'
        grid_path = 'https://data.nas.nasa.gov/geosecco/geoseccodata/c1440_llc2160/mit_output/grid'
        mask_path = 'https://storage.googleapis.com/pangeo-ecco/llc/masks/llc_2160_masks.zarr/'
        store = stores.NestedStore(fs, base_path=base_path, mask_path=mask_path,
                                   grid_path=grid_path, shrunk=True, join_char='/')
        super(ECCOPortalC1440_LLC2160Model, self).__init__(store)

should work by adding it in known_models.py...?