 3D canopy models using Ladar data can accurately predict below canopy light variability by considering forest type, voxel size, and zenith angle ranges. However, estimates of transmitted light often overestimate measured light, with maximum variance in below canopy light occurring at lower values of measured light. The study suggests improvements in modeling parameters and ray tracing parameterization for more accurate simulations. This article was authored by Renato Sufrentes, Dmitri Van Der Zander, Christian Solas, and others.