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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
(input data,
parameters,
model-calculated
states/storages)
|
|
|
- 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)
Algorithm
description
|
WRSM-Pitman
|
SPATSIM-Pitman
|
ACRU4
|
SWAT2012
|
MIKE-SHE,
semi-distributed, more conceptual
|
MIKE-SHE,
fully-distributed, more physical
|
Algorithm
inputs
(input data,
parameters,
model-calculated
states/storages)
|
- Rain
- Rainfall distribution factor
- Soil properties:
- Saturation soil moisture
- Infiltration rate distribution
- Soil moisture (state)
|
- Rain
- Rainfall distribution factor
- Soil properties:
- Saturation soil moisture
- Infiltration rate distribution
- Soil moisture (state)
|
- Throughfall (rain-interception)
- Soil properties:
- Saturation soil moisture
- Infiltration depth parameter
- Macropore by-pass (clay cracking)
- Soil moisture within infiltration depth (state)
|
- Throughfall (rain-interception)
- Soil properties:
- Saturation soil moisture
- Curve number (SCS-CN)
- Macropore by-pass
- Soil moisture (state)
|
- Throughfall (rain-interception)
- Soil properties:
- Saturation soil moisture
- Curve number (SCS-CN)
- Macropore by-pass
- Soil moisture (state)
|
- Throughfall (rain-interception)
- Soil properties:
- Saturation soil moisture
- Curve number (SCS-CN)
- Macropore by-pass
- Soil moisture (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)
|
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