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NASA's OPERA project provides a calibration and validation database for its Dynamic Surface Water Extent (DSWx-S1) product derived from Sentinel-1 radar data. The database is structured as an Amazon Web Services S3 bucket containing classification items and includes a reference document, validation results, and example Jupyter notebooks for access and querying. It is designed to support the evaluation and refinement of algorithms for detecting surface water from satellite imagery.
License details are unspecified ('other-license-specified'); users must consult the provided documentation. The primary data is packaged as a zip file of an AWS S3 bucket.