Retrieval of total ozone column using high spatial resolution top-of-atmosphere measurements by OLCI/S-3 in the ozone Chappuis absorption band over bright underlying surfaces

In this work we have developed a novel algorithm for the determination of total ozone column (TOC) from spectral top-of-atmosphere solar backscattered light measurements in range 400-1020nm performed by ESA Ocean and Land Colour Instrument on board Sentinel -3A, B. The can be applied scenes over bright underlying surfaces including clouds, snow ice (e.g., Antarctica), where absorption feature Chappuis band is clearly seen registered spectra . technique provides possibility to perform spatial scale 300m, which not reached other modern spaceborne measurements, aimed at observations such as TROPOMI, OMI, GOME-2, OMPS other.