Land Hydrology SBM
Atmospheric forcing
Standard Name | Description | Unit | Default |
---|---|---|---|
atmosphere_water__precipitation_volume_flux |
Precipitation | mm Δt⁻¹ | - |
land_surface_water__potential_evaporation_volume_flux |
Potential evaporation | mm Δt⁻¹ | - |
atmosphere_air__temperature |
Temperature | ᵒC | - |
Snow
Input
Standard Name | Description | Unit | Default |
---|---|---|---|
atmosphere_air__snowfall_temperature_threshold |
Threshold temperature for snowfall | ᵒC | 0.0 |
atmosphere_air__snowfall_temperature_interval |
Threshold temperature interval length | ᵒC | 1.0 |
snowpack__melting_temperature_threshold |
Threshold temperature for snowmelt | ᵒC | 0.0 |
snowpack__degree-day_coefficient |
Degree-day factor for snowmelt | mm ᵒC⁻¹ Δt⁻¹ | 3.75 mm ᵒC⁻¹ day⁻¹ |
snowpack__liquid_water_holding_capacity |
Water holding capacity as fraction of current snow pack | - | 0.1 |
States
Standard Name | Description | Unit |
---|---|---|
snowpack~dry__leq-depth |
Liquid-water equivalent of dry snow | mm |
snowpack~liquid__depth |
Liquid water content in the snow pack | mm |
Output
Standard Name | Description | Unit |
---|---|---|
snowpack__leq-depth |
Liquid-water equivalent of snow pack (SWE) | mm |
snowpack_meltwater__volume_flux |
Amount of snow melt | mm Δt⁻¹ |
snowpack_water__runoff_volume_flux |
Runoff from snowpack | mm Δt⁻¹ |
Glacier
Input
Standard Name | Description | Unit | Default |
---|---|---|---|
glacier_ice__initial_leq-depth |
Initial glacier liquid-water equivalent (cold state) | mm | 5500.0 |
glacier_ice__melting_temperature_threshold |
Threshold temperature for glacier melt | ᵒC | 0.0 |
glacier_ice__degree-day_coefficient |
Degree-day factor for melt from glacier | mm ᵒC⁻¹ Δt⁻¹ | 3.0 mm ᵒC⁻¹ day⁻¹ |
glacier_firn_accumulation__snowpack~dry_leq-depth_fraction |
Fraction of the snowpack on top of the glacier converted into ice | Δt⁻¹ | 0.001 day⁻¹ |
glacier_surface__area_fraction |
Fraction covered by a glacier | - | 0.0 |
States
Standard Name | Description | Unit |
---|---|---|
glacier_ice__leq-depth |
Glacier liquid-water equivalent | mm |
Output
Standard Name | Description | Unit |
---|---|---|
glacier_ice__melt_volume_flux |
Melt from the glacier | mm Δt⁻¹ |
Vegetation
Input
Standard Name | Description | Unit | Default |
---|---|---|---|
vegetation_root__depth |
Rooting depth | mm | - |
vegetation__crop_factor |
Crop coefficient | - | 1.0 |
vegetation__specific-leaf_storage |
Specific leaf storage | mm | - |
vegetation_wood_water__storage_capacity |
Storage woody part of vegetation | mm | - |
vegetation_canopy__light-extinction_coefficient |
Extinction coefficient (to calculate canopy gap fraction) | - | - |
vegetation_canopy_water__mean_evaporation-to-mean_precipitation_ratio |
Gash interception model parameter | - | 0.1 |
vegetation_canopy__gap_fraction |
Canopy gap fraction | - | - |
vegetation_water__storage_capacity |
Maximum canopy storage | mm | 1.0 |
Input static and cyclic
Standard Name | Description | Unit | Default |
---|---|---|---|
vegetation__leaf-area_index |
Leaf area index | m² m⁻² | - |
States
Standard Name | Description | Unit |
---|---|---|
vegetation_canopy_water__depth |
Canopy storage | mm |
Output
Standard Name | Description | Unit |
---|---|---|
vegetation_canopy_water__stemflow_volume_flux |
Stemflow | mm Δt⁻¹ |
vegetation_canopy_water__throughfall_volume_flux |
Throughfall | mm Δt⁻¹ |
vegetation_canopy_water__interception_volume_flux |
Interception | mm Δt⁻¹ |
Soil
Input
Standard Name | Description | Unit | Default |
---|---|---|---|
soil_vertical_saturated_hydraulic_conductivity_profile~exponential_below-surface__depth |
Depth from soil surface for which exponential decline of the vertical saturated hydraulic conductivity at the soil surface is valid, when an exponential_constant saturated hydraulic conductivity profile is used |
mm | - |
soil_layer_water__vertical_saturated_hydraulic_conductivity |
Vertical saturated hydraulic conductivity per soil layer, when a layered or layered_exponential saturated hydraulic conductivity profile is used |
mm Δt⁻¹ | - |
soil_vertical_saturated_hydraulic_conductivity_profile~layered_below-surface__depth |
Depth from soil surface for which layered profile is valid, when a layered_exponential saturated hydraulic conductivity profile is used |
mm | - |
soil_surface_temperature__weight_coefficient |
Weighting coefficient for soil surface temperature | - | 0.1125 |
soil_surface_water__infiltration_reduction_parameter |
Controls soil infiltration reduction factor when soil is frozen | - | 0.038 |
soil_water__saturated_volume_fraction |
Saturated water content | - | - |
soil_water__residual_volume_fraction |
Residual water content | - | - |
soil_surface_water__vertical_saturated_hydraulic_conductivity |
Vertical saturated hydraulic conductivity at soil surface | mm Δt⁻¹ | - |
soil_water__vertical_saturated_hydraulic_conductivity_scale_parameter |
Scaling parameter controlling decline of vertical saturated hydraulic conductivity with depth | mm⁻¹ | - |
soil_water__air_entry_pressure_head |
Air entry pressure head of soil | cm | -10.0 |
vegetation_root__feddes_critial_pressure_head_h~1 |
Critical pressure head h1 of the root water uptake reduction function (Feddes) | cm | 0.0 |
vegetation_root__feddes_critial_pressure_head_h~2 |
Critical pressure head h2 of the root water uptake reduction function (Feddes) | cm | -100.0 |
vegetation_root__feddes_critial_pressure_head_h~3~high |
Critical pressure head h3_high of the root water uptake reduction function (Feddes) | cm | -400.0 |
vegetation_root__feddes_critial_pressure_head_h~3~low |
Critical pressure head h3_low of the root water uptake reduction function (Feddes) | cm | -1000.0 |
vegetation_root__feddes_critial_pressure_head_h~4 |
Critical pressure head h4 of the root water uptake reduction function (Feddes) | cm | -16000.0 |
vegetation_root__feddes_critial_pressure_head_h~1_reduction_coefficient |
Root water uptake reduction at soil water pressure head h1 (0.0 or 1.0) | - | 1.0 |
soil__thickness |
Soil thickness | mm | - |
soil~compacted_surface_water__infiltration_capacity |
Infiltration capacity of compacted areas | mm Δt⁻¹ | 10 mm day⁻¹ |
soil~non-compacted_surface_water__infiltration_capacity |
Soil infiltration capacity | mm Δt⁻¹ | 100.0 mm day⁻¹ |
soil_water_sat-zone_bottom__max_leakage_volume_flux |
Maximum leakage from saturated zone | mm Δt⁻¹ | 0.0 mm day⁻¹ |
soil_layer_water__brooks-corey_exponent |
Brooks-Corey power coefficient per soil layer | - | - |
land~water-covered__area_fraction |
Fraction of open water (excluding rivers) | - | 0.0 |
soil_layer_water__vertical_saturated_hydraulic_conductivity_factor |
Multiplication factor applied to vertical saturated hydraulic conductivity per soil layer | - | 1.0 |
soil~compacted__area_fraction |
Fraction of compacted soil area | - | - |
soil_root~wet__sigmoid_function_shape_parameter |
Controls sharpness of transition between fully wet and fully dry roots | - | -500.0 |
soil_root__length_density_fraction |
Fraction of the root length density per soil layer | - | - |
soil_water_sat-zone_top_capillary-rise__max_water-table_depth |
Maximum water table depth for capillary rise | mm | 2000.0 |
soil_water_sat-zone_top_capillary-rise__averianov_exponent |
Averianov exponent controlling capillary rise | - | 2.0 |
States
Standard Name | Description | Unit |
---|---|---|
soil_surface__temperature |
Soil surface temperature, only when snow is modelled | ᵒC |
soil_water_sat-zone__depth |
Amount of water in the saturated store | mm |
soil_layer_water_unsat-zone__depth |
Amount of water in the unsaturated store, per soil layer | mm |
Output
Standard Name | Description | Unit |
---|---|---|
land_surface__evapotranspiration_volume_flux |
Total actual evapotranspiration | mm |
land_water~storage~total__depth |
Total water storage (excluding floodplains, lakes and reservoirs) | mm |
soil_water__infiltration_volume_flux |
Actual infiltration into the unsaturated zone | mm Δt⁻¹ |
soil_water__transpiration_volume_flux |
Transpiration from vegetation | mm Δt⁻¹ |
soil_surface_water__runoff_volume_flux |
Total surface runoff from infiltration and saturation excess | mm Δt⁻¹ |
soil_surface_water__net_runoff_volume_flux |
Net surface runoff (after open water evaporation) | mm Δt⁻¹ |
soil~compacted_surface_water__excess_volume_flux |
Excess water for compacted soil fraction | mm Δt⁻¹ |
soil~non-compacted_surface_water__excess_volume_flux |
Excess water for non-compacted soil fraction | mm Δt⁻¹ |
soil_surface_water_unsat-zone__exfiltration_volume_flux |
Water exfiltrating from unsaturated store because of rising water table | mm Δt⁻¹ |
soil_surface_water_sat-zone__exfiltration_volume_flux |
Water exfiltrating from saturated store during saturation excess conditions | mm Δt⁻¹ |
soil_layer_water__volume_fraction |
Volumetric water content per soil layer (including residual water content and saturated zone) | - |
soil_layer_water__volume_percentage |
Volumetric water content per soil layer (including residual water content and saturated zone) | % |
soil_water_root-zone__volume_fraction |
Volumetric water content in root zone (including residual water content and saturated zone) | - |
soil_water_root-zone__volume_percentage |
Volumetric water content in root zone (including residual water content and saturated zone) | % |
soil_water_root-zone__depth |
Root water storage in unsaturated and saturated zone (excluding residual water content) | mm |
soil_water_unsat-zone__depth |
Amount of water in the unsaturated store | mm |
soil_water_sat-zone_top__capillary_volume_flux |
Actual capillary rise | mm Δt⁻¹ |
soil_water_sat-zone_top__recharge_volume_flux |
Downward flux from unsaturated to saturated zone | mm Δt⁻¹ |
soil_water_sat-zone_top__net_recharge_volume_flux |
Net recharge to saturated zone | mm Δt⁻¹ |
soil_water_sat-zone_bottom__leakage_volume_flux |
Actual leakage from saturated store | mm Δt⁻¹ |
soil_water_sat-zone_top__depth |
Pseudo-water table depth (top of the saturated zone) | mm |
Water demand
Non-irrigation
Input static and cyclic
Standard Name | Description | Unit | Default |
---|---|---|---|
land~domestic__gross_water_demand_volume_flux |
Gross domestic water demand | mm Δt⁻¹ | 0.0 |
land~domestic__net_water_demand_volume_flux |
Net domestic water demand | mm Δt⁻¹ | 0.0 |
land~industry__gross_water_demand_volume_flux |
Gross industry water demand | mm Δt⁻¹ | 0.0 |
land~industry__net_water_demand_volume_flux |
Net industry water demand | mm Δt⁻¹ | 0.0 |
land~livestock__gross_water_demand_volume_flux |
Gross livestock water demand | mm Δt⁻¹ | 0.0 |
land~livestock__net_water_demand_volume_flux |
Net livestock water demand | mm Δt⁻¹ | 0.0 |
Non-paddy irrigation
Input
Standard Name | Description | Unit | Default |
---|---|---|---|
land~irrigated-non-paddy__irrigation_efficiency |
Irrigation efficiency | - | - |
land~irrigated-non-paddy_area__count |
Irrigation areas (non-paddy) | - | - |
land~irrigated-non-paddy__max_irrigation_rate |
Maximum irrigation rate | mm Δt⁻¹ | 25.0 mm day⁻¹ |
Input static and cyclic
Standard Name | Description | Unit | Default |
---|---|---|---|
land~irrigated-non-paddy__irrigation_trigger_flag |
Irrigation trigger (off or on, 0 or 1) | - | - |
Output
Standard Name | Description | Unit |
---|---|---|
land~irrigated-non-paddy__gross_water_demand_volume_flux |
Irrigation (non-paddy) gross demand | mm Δt⁻¹ |
Paddy irrigation
Input
Standard Name | Description | Unit | Default |
---|---|---|---|
land~irrigated-paddy__min_depth |
Minimum required water depth in the irrigated paddy fields | mm | 20.0 |
land~irrigated-paddy__optimal_depth |
Optimal water depth in the irrigated paddy fields | mm | 50.0 |
land~irrigated-paddy__max_depth |
Water depth when paddy field starts spilling water (overflow) | mm | 80.0 |
land~irrigated-paddy__irrigation_efficiency |
Irrigation efficiency | - | - |
land~irrigated-paddy_area__count |
Irrigation areas (paddy) | - | - |
land~irrigated-paddy__max_irrigation_rate |
Maximum irrigation rate | mm Δt⁻¹ | 25.0 mm day⁻¹ |
Input static and cyclic
Standard Name | Description | Unit | Default |
---|---|---|---|
land~irrigated-paddy__irrigation_trigger_flag |
Irrigation trigger (off or on, 0 or 1) | - | - |
States
Standard Name | Description | Unit |
---|---|---|
land_surface_water~paddy__depth |
Water depth in paddy field | mm |
Output
Standard Name | Description | Unit |
---|---|---|
land~irrigated-paddy__gross_water_demand_volume_flux |
Irrigation (paddy) gross demand | mm Δt⁻¹ |
Allocation
Input
Standard Name | Description | Unit | Default |
---|---|---|---|
land_surface_water__withdrawal_fraction |
Fraction surface water used | - | 1.0 |
land_water_allocation_area__count |
Allocation areas | - | 1 |
Output
Standard Name | Description | Unit |
---|---|---|
land_surface_water_abstraction__volume_flux |
Actual surface water abstraction | mm Δt⁻¹ |
subsurface_water_abstraction__volume_flux |
Actual groundwater abstraction | mm Δt⁻¹ |
land~irrigated__allocated_water_volume_flux |
Allocated water for irrigation | mm Δt⁻¹ |
land~non-irrigated__allocated_water_volume_flux |
Allocated water for non-irrigation | mm Δt⁻¹ |
land~non-irrigation__return_flow_volume_flux |
Return flow from non-irrgation sectors | mm Δt⁻¹ |