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The Atmospheric Science Data Center (ASDC) at NASA Langley Research Center in collaboration with the CALIPSO mission team announces the release of a new CALIPSO IIR level 3 (L3) Global Energy and Water cycle Experiment (GEWEX) Cloud product. This new data product is a reformatted version of CALIPSO’...

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Dear user,

Can you please provide more information on the project and product for which you need to obtain the metadata for?
Is this for MODIS Chlorophyll-a Concentration Level 3 ?

Thank you.

by the CMR itself, to describe the metadata record - therefore it will always move forward in time. To iteratively query for updates you can safely move your start-time forward to your previous end-time. The production date, on the other hand, is set by the provider as product metadata describing th...

Followup question: I plan to use either production or revision dates as a temporal filter to make sure I retrieve all records from the CMR. Eg, if previously I have read all the entries up to date X, my job's next run will ask for all entries between dates X and Y, after which I will save Y as the n...

"Concept ID" is the unique identified assigned, by the CMR, to each of its holdings, Collections, Granules, etc. By convention, the ID indicates the type of concept by the first character: 'C' - Collection, 'G' - Granule, etc. So, in your case, a granule search, constrained to a specific C...

Some followup questions:

1. What is the difference between concept_id and collection_concept_id and why is the latter more appropriate?

2. Is there a limit on the number of parallel CMR queries we can send you? We can sometimes generate hundreds of simultaneous queries unless I add some throttling.

In order to search for granules in a range of ProductionDate values, use the production_date parameter. See: https://cmr.earthdata.nasa.gov/search/site/docs/search/api.html#g-production-date E.g., to search for granules in your target collection with production_date in the range since 2020-10-16T20:...

Thank you for your question. A Subject Matter Expert has been notified and will answer your question shortly. Please stand by!