No granule identifier in GRACE CMR entries

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earthengine_urs
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No granule identifier in GRACE CMR entries

by earthengine_urs » Fri Dec 08, 2023 12:44 pm America/New_York

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

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PODAAC - wenhaoli
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Re: No granule identifier in GRACE CMR entries

by PODAAC - wenhaoli » Fri Dec 08, 2023 7:16 pm America/New_York

Hi Simon,

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

Thanks,

Wenhao Li

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Re: No granule identifier in GRACE CMR entries

by earthengine_urs » Tue Dec 12, 2023 12:29 pm America/New_York

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

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Re: No granule identifier in GRACE CMR entries

by PODAAC - wenhaoli » Tue Dec 12, 2023 6:57 pm America/New_York

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,

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