flim

Canopy reflectance at infinite depth

a named vector of parameters:<ul>
<li>[1] = D, stand density (confounded with cd)</li>
<li>[2] = cd, crown diameter (confounded with D)</li>
<li>[3] = h, mean crown height</li>
<li>[6] = Solar zenith angle (tts)</li>
<li>[7] = Observer zenith angle (tto)</li>
<li>[8] = Sun-sensor azimuth angle (psi)</li>
</ul>

params

area

The FLIM model was first described by Rosema et al (1992).
In FLIM forests are assumed a discontinous mix of tree crowns
and gaps. Reflectance is modelled in terms of the
probabilty to observe either a gap (background)
or a tree crown. Both gaps and crowns may be shaded.

A set of radiative transfer models to quantitatively describe the absorption, reflectance and transmission of solar energy in vegetation, and model remotely sensed spectral signatures of vegetation at distinct spatial scales (leaf,canopy and stand). The main principle behind ccrtm is that many radiative transfer models can form a coupled chain, basically models that feed into each other in a linked chain (from leaf, to canopy, to stand, to atmosphere). It allows the simulation of spectral datasets in the solar spectrum (400-2500nm) using leaf models as PROSPECT5, 5b, and D which can be coupled with canopy models as 'FLIM', 'SAIL' and 'SAIL2'. Currently, only a simple atmospheric model ('skyl') is implemented. Jacquemoud et al 2008 provide the most comprehensive overview of these models <doi:10.1016/j.rse.2008.01.026>.

flim: Forest Light Interaction Model (FLIM)

Description

Usage

Arguments

Value

Details

References