Model inputs

A table showing the input variables of selected models

This table shows the required and optional input variables for the models included in this platform. The models are rather complex and are available in different versions and configurations. Different modules can be used optionally. Therefore, this table is only an initial overview of the input variables.

The temporal dimensions of the different parameters that are needed for the respective model can vary: for some only initial values are needed, while others are needed in the temporal resolution of the modeling.

 

Key: R = Required input O = Optional input N = Input not required E = Estimated from other inputs

Model inputs

Model
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Biome BGC CLM COUP HYDRUS INCA JULES ORCHIDEE CAST SWAT VSD+
Land surface information
Land cover R R O N R R R N R O
Surface temperature N N O O N N N N N N
Slope and aspect N R O N O O R N E N
Elevation R R O N R N R N R O
Coordinates R R R N R R R N E O
Surface temperature of land surface types N N O N N R N N N N
Percent glacier N R N N N R R N E N
Percent lake N R N N O R R N E N
Percent wetland N R N N O N N N E N
Meteorology
Air temperature R R R N R R R R R O
Maximum temperature (daily) R N O N N N R N R N
Minimum temperature (daily) R N O N N N R N R N
Average temperature (daylight) R N O N N N R R N N
Potential temperature N N O N N N N N N N
Precipitation (total) R R R R R R R R R O
Precipitation (liquid) N N O N N O R N E N
Precipitation (solid) N N O N N O R N E N
Specific humidity R R O N N R R N O N
Pressure N R O N N R R N N N
Partial pressure of water vapour (daylight average) N N O N N R R N O N
CO2 atmospheric concentration R N O O N R R N O N
Wind speed N R O N N R R N O N
Wind speed (zonal) N N O N N O R N N N
Wind speed (meridional) N N O N N O R N N N
Downward shortwave radiation R R O N N R R N N O
Downward longwave radiation N R O N N R R N N O
Incident solar radiation R N O N N N R N O N
Incident direct beam visible solar radiation R N N N N N R N N N
Incident diffuse visible solar radiation R N N N N O R N N N
Incident infra-red radiation N N N N N N R N N N
Incident direct beam near-infrared solar radiation N N N N N N R N N N
Incident diffuse near-infrared solar radiation R N N N N N R N N N
Daylight average shortwave radiant flux density R N N N N N R N N O
Daylength R N N N N N N N N N
Soil
Soil depth R O R R O N R R R R
Soil color N R N N N N N N N N
Texture R R O R O O R R R R
Soil bulk density N N N N N N N N N R
Fraction of Ca in parent material of calcareous soil N N N N N N N N N O
Initial base saturation N N N N N N N N N R
Cation exchange capacity N N N N N N N N N R
Cation exchange model option (Gaines-Thomas or Gapon model) N N N N N N N N N R
Selectivity constant for Al-base cation exchange N N N N N N N N N R
Selectivity constant for H-base cation exchange N N N N N N N N N R
Exponent in Al dissolution equilibrium equation N N N N N N N N N O
Coefficient of Al dissolution equilibrium equation N N N N N N N N N R
CO2 pressure in soil solution N N N N N N N N N R
Organic acid dissociation model option (Oliver or mono-protic model) N N N N N N N N N O
Parameters for organic acid dissociation model N N N N N N N N N O
Concentration of organic acids N N N N N N N N N O
Initial soil C:N ratio N N N N N N N N N R
Initial soil C pool N N N N N N N N N R
Reduction factor of mineralisation rate due to moisture and temperature N N N N N N N N N O
Reduction factor of nitrification rate due to moisture and temperature N N N N N N N N N O
Reduction factor of denitrification rate due to moisture and temperature N N N N N N N N N O
Nitrification rate at reference temperature of 10°C N N N N N N N N N O
Denitrification rate at reference temperature of 10°C N N N N N N N N N O
Uptake efficiency of available N (0-1) N N N N N N N N N O
Weathering rate of Ca N N N N N N N N N R
Weathering rate of Mg N N N N N N N N N R
Weathering rate of K N N N N N N N N N R
Weathering rate of Na N N N N N N N N N R
Bare soil albedo R N N N N R R N R N
Dry soil thermal conductivity N N R R O R N N N N
Dry soil thermal capacity N N R R O R N N N N
Volumetric saturation point R N R R O R N N R O
Critical volumetric soil moisture content R N N N O R N N R O
Volumetric wilting point for soil R N R N O R N N E O
Residual water content O R R R N N N O
Field capacity R N N N O N N N E O
Saturated hydraulic conductivity N N R R N R N N R O
Saturated soil water pressure N N N N N R N N N O
Clapp-Hornberger exponent N N N N N O N N N N
alpha N N O R N O N N N N
n N N O R O O N N N N
Temperature of each soil level N N R O N R N N E N
Moisture concentration of each soil layer N N R N O R N N N R
Soil moisture in deep layer/fraction of saturation N N N N O O N N N N
Soil carbon R O O N N O N R R R
Vegetation
Canopy water R N O N N R N N N N
Canopy height N R O N N R N N N N
Canopy top and bottom height N O N N N N N N N
Leaf area index R R O N N R N N O N
Stem area index N O N N N N N N N
Precipitation interception coefficient R N R N N N N N R N
Light extinction coefficient R N R N N R N N O N
Fraction of leaf nitrogen in Rubisco R O O N N N N N N
Soil water potential at full stomatal closure R O N N N R N N N
Soil water potential with full stomatal opening R O N N N R N N N
Specific leaf area of canopy top R O O N N N N N N
Ball-Berry slope of conductance-photosynthesis relationship O O N N N N N N N
Growth respiration factor R O R N N R N N N
Base rate for maintenance respiration R O R N N R N N N
Root distribution parameters N O R N N N N O N
Turnover coefficients for leaf, stem, and root R N R N N R N N O O
Carbon allocation parameters R O R N N R R N O
Carbon/nitrogen ratio parameters R O R N N R N N O
N litterfall flux N N N N N N N N N R
Carbon litterfall flux N N N N N N N N N R
Total N uptake by vegetation N N N N N N N N N R
Net Ca uptake by vegetation N N N N N N N N N R
Net Mg uptake by vegetation N N N N N N N N N R
Net K uptake by vegetation N N N N N N N N N R
Net P uptake by vegetation N N N N N N N N N O
Combustion completeness factors N O ? N N N N N N
Fire mortality factors O O N N N N N N N
Snow
Snow amount of each surface type R N N N N R N N N N
Snow grain size of each surface type N N N N N O N N N N
Snow on ground below vegetation surface types N N N N N O N N O N
Snow depth of each surface type N N N N N O N N N N
Temperature of each snow layer N N N N N O N N N N
Ice content of each snow layer N N N N N O N N N N
Liquid content of each snow layer N N N N O O N N N N
Snow grain size of each snow layer N N N N N O N N N N
Other
Mean water table depth R N O N N O N N O N
Shortwave albedo R N R N N O N N N O
Total atmospheric nitrogen deposition R N O N R O R N O R
Total atmospheric sulphur deposition N N N N N N N N N R
Total atmospheric base cation (Ca, Mg, Na, K) deposition N N N N N N N N N R
Total fixation of nitrogen R N O N O N N N O O