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VDAf Validation Server

The Sentinel-5p Mission Performance Centre provides an operational validation service relying 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.  It 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 tropospheric O3 column data (CCD) with respect to correlative measurements acquired by an ozonesonde of the SHADOZ Network. More tropospheric O3 validation results are available at



The VDAF Automated Validation Server in brief: