Analytical expressions between inherent optical properties (IOPs) retrieved using semi‐analytical algorithms (SAAs) and the vertical distributions of IOPs are derived based on an analytical model for subsurface remote sensing reflectance ( r rs ). These expressions provide a theoretical and comprehensive understanding of the inverted IOPs for stratified waters and lay the foundation to obtain equivalent products from profiling...

Various empirical relationships have been developed in the past nine decades to link the Secchi‐disk depth ( Z SD ) with the diffuse attenuation coefficient ( K PAR ), the euphotic zone depth ( Zeu ), and chlorophyll (Chl) concentration, where the latter two are important for the quantification and evaluation of photosynthesis in aquatic environments. There was also a classical theory regarding Secchi‐disk sighting, but large...