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July 11, 2022

All Landsat Collection 2 data stored in the Amazon Web Service (AWS) cloud platform include SpatioTemporal Asset Catalog (STAC) metadata. A recent STAC release incorporated improved geometric accuracy.

Improvements and updates made during the recent STAC release include:  

  • The addition of Committee on Earth Observation Satellites (CEOS) Analysis Ready Data for Land (CARD4L) geometric accuracy standards 

  • The addition of a bit mask classifications to indicate CARD4L geometric accuracy confidence level  

  • Updated functionality to automatically delete orphaned STAC records when a new product replaces an existing product 

  • Resolved various data discrepancies and minor software fixes 

All 40 million STAC records have been regenerated to apply the improvements listed above.  

Updated Level-2 samples of the new records, along with information about STAC and accessing Landsat Collection 2 data in the cloud, can be found on the Landsat Commercial Cloud Data Access webpage.    

Please contact USGS EROS Customer Services with any questions about STAC.  


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