A reverse ray-tracing method for modelling the net radiative flux in leaf-resolving plant canopy simulations

摘要

Highlights?A new method was developed for calculating net all-wave radiation flux in plants.?Reverse ray-tracing was used to calculate radiative exchange by emission.?The method ensures radiative flux values are bounded within a “reasonable” range.?Ray-tracing calculations were accelerated by using GPU computing.?Simulations were performed with more than 500 fully resolved trees.AbstractRadiation is a direct or indirect driver of essentially all biophysical processes in plant systems, and is commonly described through the use of models because of its complex distributions in time and space. Detailed radiation transfer models that represent plant-scale heterogeneity have high computational resource requirements, thus severely limiting the size of problems that can be feasibly considered, while