observable variable
actual evaporation
actual soil evaporation
canopy storage of solute
potential 'wet-canopy' evaporation
potential root water uptake
soil temperature
soil water content
solute concentration in macropores
solute concentration in micropores
solute concentration in soil solution
solute concentration in solid phase
water flux entering a soil layer or domain
water table height
internal variable
canopy interception
direct throughfall
drainage rate
drip throughfall
effective saturation in macropores
effective saturation in micropores
hydraulic conductivity
hydraulic conductivity of macropores
hydraulic conductivity of micropores
hydraulic head
infiltration in macropores
infiltration in micropores
leaf area index
lower boundary condition
maximum possible water flux to soil surface
maximum water pressure head
potential 'dry-canopy' transpiration
potential soil evaporation
root depth
root water uptake sink
sink term in solute transport equation (biodegradation)
soil water content in macropores
soil water pressure head
soil water pressure head of micropores
solute concentration in net rainfall
solute concentration in solid phase, macropores
solute concentration in water...
solute store in micropores
source/sink term
total drainage rate
water stored in the canopy