TY JOUR TI A New Method for Retrieving Remote Sensing Reflectance from First-Level OLCI Satellite Data KW aerosol KW atmospheric correction KW remote sensing reflectance KW sea optics KW color index KW interpolation KW Black Sea JO Russian Journal of Earth Sciences AU Shybanov, E.B. AU Papkova, A.S. PY 2025 IS 25 PB Geophysical Center of the Russian Academy of Sciences