Vegetation Radiative Transfer Modelling (Nadine Gobron) - PEER
Vegetation Radiative Transfer Modelling (Nadine Gobron) - PEER
Vegetation Radiative Transfer Modelling (Nadine Gobron) - PEER
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I (z)<br />
I (z+Δz)<br />
Conservation of radiant energy<br />
for I in a slab Δz<br />
I (z)<br />
I (z+Δz)<br />
z=0<br />
z<br />
z+Δz<br />
z=z h<br />
P is the probability<br />
that a photon<br />
directed upward is<br />
scattered downward<br />
I<br />
↓<br />
(z)<br />
+<br />
SΔzP<br />
↑↓<br />
I<br />
↑<br />
(z<br />
+<br />
Δz)<br />
=<br />
P is the probability<br />
that a photon<br />
directed downward<br />
is scattered upward<br />
↓<br />
↓↑<br />
KΔ zI (z) + SΔzP<br />
I (z) + I (z +<br />
↓<br />
↓<br />
Δz)<br />
coefficients of absorption, K (in m -1 ) and scattering S (in m -1 )<br />
12
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