Measurements of Canopy Nonrandomness at Jarvselja Rami (radiation Transfer Model Intercomparison) Test Sites

RAdiation transfer Model Intercomparison (RAMI) was designed as an on-going mechanism to benchmark radiation transfer (RT) models used to simulate the transfer of radiation at or near the Earth's terrestrial surface, i.e. in plant canopies and over soil surfaces [1]. For the future phases of intercomparisons, one of the expected goals would be to investigate the potential of RT models to reproduce in situ measurements of transmitted light by various methods such as Tracing Radiation and Architecture of Canopies (TRAC; 3rd Wave Engineering, ON, Canada) instrument or digital hemispherical photography (DHP) [2]. The intensive collection of the optical measurements in the RAMI-selected real world forest stands is thus required.