This is the appearance of the Canopy tab of the System Coefficients dialog:
Following is a description of the parameters associated with Canopy. Refer to the main System Coefficients page for information on other categories of coefficients. To save the changes made when closing this dialog, click OK. To ignore changes, click Cancel.
Standing Biomass is the initial biomass density (10.0 – 25.0 kg/m2)
Particle Deposition is the deposition velocity for particles for each month (0.2 – 0.8 cm / sec)
Note: if coarse particle atmospheric deposition is used, there are lines in the spreadsheet for both fine and coarse particle deposition velocities.
Gas Uptake is the uptake velocity for NO2 and SO2 gas for each month (0 – 0.5 cm / sec)