This MODULE contains one SUBROUTINE which evaluates the latent heat from
ground/soil/snow pack given the previously evaluated rate of potential
evaporation. This is a component of the calculation of the surface energy
balance and is called twice per cycle in the MO iteration section of
define_canopy.
The procedures contained in this module calculate the roughness parameters
and the aerodynamic contribution to the resistances controlling the fluxes
of momentum, heat and water vapour between the land and atmosphere for each
land point.
This MODULE contains the SUBROUTINE comp_friction_vel and two
FUNCTIONS (psim and psis) needed to
evaluate the friction velocity over each land point/tile
given the wind speed and the current estimate of the Monin-Obukhov
stability parameter . Outputs friction_vel, psim and
psis are used in define_canopy.