| Evap | Evaporation rate [m/s]. Evaporation only takes place if the upper layer is unsaturated |
| FieldCapacity |
Volume of pore water relative to total volume after the soil has been allowed to drain fully (as a fraction).
Below this level, infiltration/vertical drainage of water through the soil layer does not occur.
This is a fraction, which must always be less than the Porosity, and larger than the WiltingPoint. |
| FlowMethod | Flag specifying which method to use for soil infiltration and percolation (leakage). |
| GaConductivity | Conductivity of soil [m/s], used by the Green Ampt infiltration method |
| GaConductivityCoefficient |
Coefficient for conductivity of soil, used by the Green Ampt infiltration method.
Also called conductivity slope |
| GaInfil | Green Ampt infiltration computational variables and state |
| GaSuctionHead | Suction head of soil [m], used by the Green Ampt infiltration method |
| InfiltrationCapacity | Capacity to infiltrate from surface to soil, in [m/s] |
| LeakageCapacity | Capacity to percolate (leak/infiltrate) from soil to storage, in [m/s] |
| Moisture |
Moisture fraction, volume of pore water relative to total volume (as a fraction).
This fraction is always between WiltingPoint and the Porosity. |
| MoistureOld | Moisture fraction of last time step |
| Perc | Percolation rate. [m/s] Speed of the water through the soil, effectively used as infiltration rate from soil to lower layer |
| Porosity | Soil porosity; void volume fraction of total volume. |
| Thickness | Thickness of soil layer [m] |
| Volume | Volume of free water per area [m] contained in soil. Bound water (below WiltingPoint) is not included |
| WiltingPoint |
Volume of bound water relative to total volume, i.e. water content in a fully dried soil (as a fraction).
The moisture content of the soil cannot fall below this limit.
This is a fraction, which must always be less than the Porosity, and the FieldCapacity. |