The AAI observations can be used to study
From GOME-2 observations AAI is provided as Offline Level 2 data, disseminated via Finnish Meteorological Institute data service. There are two kind of products available, "AAI" and "AAI from PMDs", that differ by their spatial resolution. The Spatial resolution of "AAI" is equal to the spatial resolution of the GOME-2 instruments: 40 km x 40 km for Metop-A and 80 km x 40 km for Metop-B. The spatial resolution of AAI from the Polarisation Measurement Detectors (PMDs) is equal to the spatial resolution of the small field-of-view PMD detectors: 5 km x 40 km for Metop-A and 10 km x 40 km for Metop-B.