Level 1 Archiving Suite

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The FORCE Level 1 Archiving Suite (FORCE L1AS) assists in organizing and maintaining a clean and consistent Level 1 data pool, as well as downloading of Sentinel-2 data. It is attempted to reduce redundancy and supports versioning, e.g. by removing old data if new processing versions are available. In addition, FORCE L1AS assists in building and updating the file queues needed for Level 2 Processing System:

Figure. FORCE Level 1 Archiving Suite (L1AS) workflow.

Note

We reccomend using force-level1-csd for fast downloads of Sentinel-2 data from Google Cloud Storage, and force-level1-landsat for downloading Landsat data from the USGS.

As of FORCE v. 3.5 force-level1-sentinel2 is deprecated and will be removed in a future FORCE version.

On successful ingestion, the image is appended to a File queue, which controls Level 2 processing. The file queue is a text file that holds the full path to the image, as well as a processing-state flag. This flag is either QUEUED or DONE, which means that it is enqueued for Level 2 processing or was already processed and will be ignored next time.

force-level1-csd	force-level1-landsat	force-level1-sentinel2	File queue