lt_nonalg

The light extinction coefficient, $k_l$, is calculated as a function of the algal density using the nonlinear equation:

$k_l=k_{l,0}+k_{l,1}*\alpha_0*algae+k_{l,2}*(\alpha_0*algae)^{2/3}$

where $k_{l,0}$ is the non-algal portion of the light extinction coefficient ($m^{-1}$), $k_{l,1}$ is the linear algal self shading coefficient ($m^{-1}(\mu g - chla/L)^{-1})$, $k_{l,2}$ is the nonlinear algal self shading coefficient $m^{-1}(\mu g - chla/L)^{-2/3})$, $\alpha_0$is the ratio of chlorophyll a to algal biomass ($\mu g$ chla/mg alg), and $algae$ is the algal biomass concentration (mg alg/L).

Relevant chapter in the Theoretical Documentation: