search nasa earth science granules via the common metadata repository (cmr) api

domain: cmr.earthdata.nasa.gov · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗

Steps

  1. Call GET https://cmr.earthdata.nasa.gov/search/granules.json (or .umm_json/.stac) with query params like short_name, collection_concept_id, temporal, bounding_box/polygon, and page_size.
  2. First resolve a dataset's collection_concept_id (or short_name+version) via the /search/collections endpoint if you don't already know it.
  3. For large result sets, read the CMR-Search-After response header and pass it back as the CMR-Search-After request header on the next call to page through results instead of relying on page_num alone.
  4. Choose an output format suited to your use (.json for simple granule metadata, .umm_json for the full UMM schema, or .stac for a STAC-compatible FeatureCollection).
  5. For most Earthdata collections you'll also need a NASA Earthdata Login (EDL) bearer token to actually download the granule data referenced by search results, even though search itself may be unauthenticated for public collections.

Known gotchas

Related routes

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