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sunlight shaded canopy algorithm

Hello,

I notice in the sunlight shaded canopy algorithm in SurfaceRadiationMod.F90, there is some code commented out. I don't see any comment as to why this particular part of the code was not used. Specifically, why the calculation of effective extinction coefficients for indirect transmission originating from direct and indirect streams was not used. I can't find in the original papers (Dai et al. 2004 and Thornton and Zimmerman 2007) why this would be the case. Any thoughts would be appreciated.

Thanks,
Joe
 
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