issue_comments: 1034098265

This sounds like it could theoretically be handled using intake derived datasets. To be fair, derived datasets are probably still in their early stages. But the basic idea would be to apply arbitrary transformations to a dataset after it has been opened (e.g. with decode_cf=False) and represent the outcome of this transformation as an entry in the catalog. A suitable transformation function might be something like: python def fix_calendar(ds): ds.time.calendar = "proleptic_gregorian" return xr.decode_cf(ds) ... but maybe it is still more convenient or useful to handle it in xarray directly (e.g. I don't know if stac has a similar approach).