canopy_evap

Variable

Type

Units

Description

atmos

atmos_data_struct*

N/A

• prec - precipitation [mm]
• melt - snow melt (water balance only [mm]
• rad - net radiation [W/m²]
• vpd - vapor pressure deficit [Pa]
• air_temp - air temperature [C]

layer

layer_data_struct*

N/A

• moist - unfrozen layer moisture [mm]
• moist_froz - frozen layer moisture [mm]
• moist_thaw - thawed layer moisture [mm]
• ice - frozen layer ice [mm]
• tdepth - layer thaw depth [m]
• fdepth - layer frost depth [m]

veg_var

veg_var_struct*

N/A

• Wdew - intercepted water on vegetation (dew) [mm]

soil_con

soil_con_struct

N/A

• elevation - grid cell average elevation [m]
• depth - soil layer thickness [m]
• Wcr - critical moisture capacity of soil layer [mm]
• Wpwp - wilting point moisture capacity of soil layer [mm]

veg_class

int

N/A

Vegetation class number, used to index vegetation library table

evap_temp

double

C

Evaporation temperature, either surface temperature for energy balance model, or air temperature for water balance model.

month

int

N/A

Current month

global

global_param_struct

N/A

• dt - model time step [hr]

mu

double

fraction

Fraction of grid cell that receives precipitation

ra

double

s/m

Aerodynamic resistance

Variable

Type

Units

Description

layer

layer_data_struct*

N/A

• evap - transpiration from each soil layer [mm]

veg_var

veg_var_struct*

N/A

• throughfall - amount of rain that passes through the canopy [mm]
• canopyevap - evaporation from the canopy [mm]

x

double

fraction

Fraction of grid cell for which the distributed rainfall exceeds the holding capacity of the vegetation. Set to 1 for average rainfall.