Earthdata Forum

Hi,

When we parse CMR entries, we look for the file basename (which I think CMR calls "granule identifier"). For example, in https://cmr.earthdata.nasa.gov/search/granules.umm_json?downloadable=true&collection_concept_id[]=C2723754851-GES_DISC&page_size=1&revision_date[]=2023-04-17T15:28:13.178000,2023-12-08T17:21:08.119579&sort_key=revision_date we see

"DataGranule":{"Identifiers":[{"Identifier":"3B-MO.MS.MRG.3IMERG.20011101-S000000-E235959.11.V07A.HDF5","IdentifierType":"ProducerGranuleId"}]

However, for GRACE results like https://cmr.earthdata.nasa.gov/search/granules.umm_json?downloadable=true&collection_concept_id[]=C2077042612-POCLOUD&page_size=1&revision_date[]=2023-04-17T15:28:13.178000,2023-12-08T17:22:33.148248&sort_key=revision_date this key is missing. We can add special parsing for such entries, but I wanted to check first if this is expected.

Thanks,
Simon

Hi Simon,

The ProducerGranuleId matches GranuleUR in most cases. You may use GranuleUR instead if feasible.

Thanks,

Wenhao Li

Thank you, Wenhao. We'll try this now, but isn't there a standard regarding how these results are formatted?

The GranuleUR is the unique identifier for granules, like the ShortName for collections. We do recommend to use the GranuleUR vs ProducerGranuleId in CMR.

Thanks,