Hi @felipeskull -
I’m not exactly sure what your questions are, but perhaps it would help to see more of a step-by-step process than what is currently included in the User Guide?
1/ Create a root depth raster by mapping the root_depth column of the biophysical table to your land use/land cover (LULC) raster.
2/ Use a GIS Raster Calculator or specific math function to calculate the minimum of the root depth raster (from step 1) and the soil depth raster you’re using as a model input.
3/ Calculate AWC using the equation in Appendix 1 of the User Guide, using the output of step 2 and the PAWC raster you’re using as a model input.
4/ Determine the average (mean) value of the AWC raster calculated in step 3, and the average (mean) value of the annual precipitation raster you’re using as a model input. These will be single number values, not rasters.
5/ Use the average values determined in step 4 to calculate Z. You’ll need to look at the referenced papers to help determine ω.
If this doesn’t help, let me know.
~ Stacie