While solar-induced fluorescence (SIF) shows promise as a remotely-sensed measurement
directly related to photosynthesis, interpretation and validation of satellite-based SIF
retrievals remains a challenge. SIF is influenced by the fraction of absorbed
photosynthetically-active radiation at the canopy level that depends upon illumination
geometry as well as the escape of SIF through the canopy that depends upon the viewing
geometry. Several approaches to estimate the effects of sun-sensor geometry on satellite …