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Canopy interception and evaporation (vs throughfall)
| Algorithm description
|
WRSM-Pitman
|
SPATSIM-Pitman
|
ACRU4
|
SWAT2012
|
MIKE-SHE,
semi-distributed & fully distributed
|
| Algorithm inputs
|
- Rain
- Cover properties: max interception
|
- Rain
- Cover properties: max interception
|
- Rain
- PET
- Cover properties: max interception or LAI
- Canopy storage (state)
|
Canopy interception is not explicitly modelled when using daily timestep modelling.
It is implicitly considered in the ‘initial abstraction’, see infiltration & surface runoff below
|
- Rain
- PET
- Cover properties: LAI & canopy interception coefficient
- Canopy storage (state)
|
| Function type
|
exponential & threshold
|
exponential & threshold
|
threshold
|
threshold
|
| Thresholds
|
yes:
timestep interception capacity (calculated)
|
yes:
timestep interception capacity (calculated)
|
yes:
timestep interception capacity (calculated)
|
yes:
timestep interception capacity (calculated)
|
Infiltration into soil moisture (SM)
Surface water generation of landscape units
Surface runoff to channel network
Evapotranspiration (ET) from soil moisture (SM)
Evapotranspiration (ET) from groundwater (GW)
Interflow generation & routing to channel network
Aquifer recharge
Groundwater (GW) flow
Aquifer exchange with channel: aquifer outflow or channel transmission losses