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VDAF  Validation  Server

The Routine Operations Validation Service provided by the Sentinel-5p Mission Performance Centre relies on the VDAF Automated Validation Server (VDAF-AVS).  This fully automated data analysis system collects correlative measurements from quality-controlled monitoring networks and compares them to Sentinel-5p data using community endorsed protocols.  VDAF-AVS outputs a suite of traceable quality indicators enabling users to judge the fitness-for-purpose of the Sentinel-5p data.

The figure below illustrates the automated comparison of Sentinel-5p TROPOMI O3 column data (NRTI) with respect to correlative measurements acquired by the SAOZ instrument at Kerguelen Island (Indian Ocean). More O3 column validation results are available at




The VDAF Automated Validation Server in brief: