TY JOUR TI Features of Results of Optical Observations of the Black Sea from Space in Summer 2015 KW Black Sea KW satellite observations KW chlorophyll a concentration KW optical characteristics KW light absorption KW MODIS KW VIIRS KW GIOP KW phytoplankton KW yellow substance JO PHYSICAL OCEANOGRAPHY AU Suetin, V.S. AU Korolev, S.N. PY 2025 IS 41 PB Federal State Budget Scientific Institution Federal Research Centre “Marine Hydrophysical Institute of RAS”