Mapping the irradiance field of a single tree: quantifying vegetation-induced adjacency effects

Kükenbrink, Daniel; Hueni, Andreas; Schneider, Fabian D; Damm, Alexander; Gastellu-Etchegorry, Jean-Philippe; Schaepman, Michael E; Morsdorf, Felix

doi:10.1109/tgrs.2019.2895211

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Kükenbrink, D., Hueni, A., Schneider, F. D., Damm, A., Gastellu-Etchegorry, J.-P., Schaepman, M. E., & Morsdorf, F. (2019). Mapping the irradiance field of a single tree: quantifying vegetation-induced adjacency effects. IEEE Transactions on Geoscience and Remote Sensing, 57(7), 4994–5011. https://doi.org/10.1109/tgrs.2019.2895211

Abstract

Imaging spectroscopy is frequently used to assess traits and functioning of vegetated ecosystems. Applied reflectance- and radiance-based approaches critically rely on accurate estimates of surface irradiance. Accurate retrievals of surface irradiance are, however, nontrivial and often error-prone, thus causing inaccurate estimates of vegetation information. We analyze the irradiance field surrounding an isolated tree using the 3-D radiative transfer model DART in high spatial (25 cm) and spectral (1 nm, 350-2500 nm) resolution. We va