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A numerical model for simulating the radiation regime within a deciduous forest canopy

A numerical model for simulating the radiation regime within a deciduous forest canopy

Agricultural & Forest Meteorology 46(4): 313-338

A numerical model that simulates the radiation regime inside a fully leafed and leafless deciduous forest canopy is discussed and tested. The model incorporates features which account for the vertical variation in leaf inclination angles and penumbral effects; these features have been experimentally shown to significantly influence the radiation regime in a deciduous forest. This version of the model mimics measured values quite well and improves upon estimates of the canopy radiation regime that are based upon the general assumuption that the leaf inclination angle distribution is spherical and that the Poisson probability distribution describes the probability of beam penetration. On the other hand, the numerical model assumes first-order scattering, which is inferior to multiple scattering routines.

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Accession: 001740465

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DOI: 10.1016/0168-1923(89)90034-8

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