Fig. 1From: Use of GOCI-II images for detection of harmful algal blooms in the East China SeaThe study area of the East China Sea (ECS). The red star represents the Dongou Ocean Observing Platform where in situ \({R}_{rs}(\uplambda )\) observations were taken. The colored pixels represent Chlorophyll a (Chl a) concentrations from MODIS L3 1 km data obtained between 2011 and 2020Back to article page