def METHOD_NAME():
    datasets = []
    for key in FINE_RESTARTS_KEYS:
        dataset = CATALOG[key].to_dask()
        if isinstance(dataset.time[0].item(), str):
            dataset = dataset.assign_coords({"time": convert_timestamps(dataset.time)})
        dataset = standardize_fv3_diagnostics(dataset)
        if "pfull" in dataset.dims:
            dataset = dataset.rename(RENAME_DIMS)
        datasets.append(dataset)
    ds = xr.merge(datasets)
    rotate_winds(ds)
    ds_3d = xr.Dataset()
    for restart_name, python_name in FINE_TO_COARSE_RENAME.items():
        ds_3d[python_name] = ds[restart_name]
    return ds_3d.drop_vars(COORD_VARS)