New formulation for the roughness height (z0) based on Su et al. (2001): specific values for heat and momentum transport. It now varies with LAI. New flag ROUGH_DYN(default =FALSE) activates the new formulation.
Delete the old option which enables to compute the average z0 by averaging the log of z0.
For more information see the wiki :
https://forge.ipsl.jussieu.fr/orchidee/wiki/DevelopmentActivities/CMIP6/DevelopmentsCMIP6/zo_evaporation
These modifications corresponds to revision 3523 in svn://forge.ipsl.jussieu.fr/orchidee/perso/nicolas.vuichard/ORCHIDEE_ROUGHNESS_DYN