Geolocation Assessment/validation Methods for EUMETSAT Polar System – Second Generation (EPS-SG) ICI conical scanning radiometer

Methodologies have been developed for the validation during the Cal/Val phase of the geolocation error of the ICI radiometer that will be onboard of the Second Generation (SG) of the EUMETSAT Polar System (EPS-SG) satellites. The work investigated how ICI channels can be used to identify optically detectable surface targets, such as landmarks, and atmospheric features, such as water vapour gradients and deep convective clouds. The validation was based on a contour matching technique, using high altitude lakes, ice shelves and mountain chains as landmark targets, and water vapour features and deep convective cloud as atmospheric targets.