Abstract

In ocean-color remote sensing, subsurface remote-sensing reflectance ($r_{rs}$) of optically deep waters can be linked to its absorption ($a$) and backscattering coefficients ($b_b$) by various models. The use of such models allows for quick calculations $r_{rs}$ from such coefficients, eliminating the need to solve the radiative transfer equation. In particular, $r_{rs}$ can be expressed as a function of $b_b/(a+b_b)$. HydroLight and Monte Carlo simulations showed that commonly used models underestimate $r_{rs}$ in waters with high suspended sediment loads. Monte Carlo simulations confirmed that this issue is due to a sharp increase in multiple scattering events at high turbidity levels. A quartic polynomial model is derived relating $r_{rs}$ and inherent optical properties (IOPs) for waters of any turbidity, to avoid significant errors in waters of high turbidity.

© 2019 Optical Society of America

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