hydrology_verticalInputs: Soil vertical inputs

In medfate: Mediterranean Forest Simulation

Soil vertical inputs

Description

High-level functions for hydrological processes. Function hydrology_soilWaterInputs performs canopy water interception and snow accumulation/melt. Function hydrology_soilInfiltrationPercolation performs soil infiltration and percolation from the input given by the previous function.

Usage

hydrology_soilWaterInputs(
  soil,
  soilFunctions,
  prec,
  er,
  tday,
  rad,
  elevation,
  Cm,
  LgroundPAR,
  LgroundSWR,
  runon = 0,
  snowpack = TRUE,
  modifySoil = TRUE
)

hydrology_soilInfiltrationPercolation(
  soil,
  soilFunctions,
  waterInput,
  rockyLayerDrainage = TRUE,
  modifySoil = TRUE
)

Arguments

soil	A list containing the description of the soil (see soil).
soilFunctions	Soil water retention curve and conductivity functions, either 'SX' (for Saxton) or 'VG' (for Van Genuchten).
prec	Precipitation for a given day (mm)
er	The ratio of evaporation rate to rainfall rate.
tday	Average day temperature (ºC).
rad	Solar radiation (in MJ/m2/day).
elevation	Altitude above sea level (m).
Cm	Canopy water storage capacity.
LgroundPAR	Percentage of photosynthetically-acvive radiation (PAR) reaching the ground.
LgroundSWR	Percentage of short-wave radiation (SWR) reaching the ground.
runon	Surface water amount running on the target area from upslope (in mm).
snowpack	Boolean flag to indicate the simulation of snow accumulation and melting.
modifySoil	Boolean flag to indicate that the input soil object should be modified during the simulation.
waterInput	Soil water input for a given day (mm).
rockyLayerDrainage	Boolean flag to indicate the simulation of drainage from rocky layers (> 95% of rocks).

Details

The function simulates different vertical hydrological processes, which are described separately in other functions. If modifySoil = TRUE the function will modify the soil object (including both soil moisture and the snowpack on its surface) as a result of simulating hydrological processes.

Value

Function hydrology_soilWaterInputs returns a named vector with the following elements, all in mm:

Rain	Precipitation as rainfall.
Snow	Precipitation as snow.
Interception	Rainfall water intercepted by the canopy and evaporated.
NetRain	Rainfall reaching the ground.
Snowmelt	Snow melted during the day, and added to the water infiltrated.
Runon	Surface water amount running on the target area from upslope.
Input	Total soil input, including runon, snowmelt and net rain.

Function hydrology_soilInfiltrationPercolation returns a named vector with the following elements, all in mm:

Infiltration	Water infiltrated into the soil (i.e. throughfall + runon + snowmelt - runoff).
Runoff	Surface water leaving the target area.
DeepDrainage	Water leaving the target soil towards the water table.

Author(s)

Miquel De Cáceres Ainsa, CREAF

See Also

spwb_day, hydrology_rainInterception, hydrology_soilEvaporation

medfate documentation built on Aug. 29, 2023, 5:07 p.m.