Wong Joel, Liew Soo Chin, Wong Elizabeth, Lee Zhongping
Appl Opt. 2019 Apr 1;58(10):2671-2677. doi: 10.1364/AO.58.002671.
In ocean-color remote sensing, subsurface remote-sensing reflectance ( ) of optically deep waters can be linked to its absorption () and backscattering coefficients ( ) by various models. The use of such models allows for quick calculations from such coefficients, eliminating the need to solve the radiative transfer equation. In particular, can be expressed as a function of /(+). HydroLight and Monte Carlo simulations showed that commonly used models underestimate 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 and inherent optical properties (IOPs) for waters of any turbidity, to avoid significant errors in waters of high turbidity.
在海洋颜色遥感中,光学深层水域的水下遥感反射率( )可通过各种模型与吸收系数( )和后向散射系数( )相关联。使用这些模型可以根据这些系数进行快速计算,无需求解辐射传输方程。特别地, 可以表示为 /(+) 的函数。HydroLight和蒙特卡洛模拟表明,常用模型在高悬浮泥沙负荷的水域中会低估 。蒙特卡洛模拟证实,这个问题是由于高浊度水平下多次散射事件急剧增加所致。推导了一个四次多项式模型,将任何浊度水域的 与固有光学特性(IOPs)联系起来,以避免在高浊度水域中出现显著误差。