User Tools

Site Tools


start:hype_file_reference:par.txt

par.txt

Model parameters determine the function of the model. The model parameters are given in the file par.txt. A model parameter may have a dependency on some physical property, e.g. soil type, or a spatial division of the model domain or be a general value for the whole model domain. If a parameter is dependent on e.g. a property it will have one value for each code of that property. For instance if a model has two land uses, open and forest land, snow melt rate will have a (different) value for each open and forest land because the HYPE snow melt parameter is land use dependent.

Many model parameters are coefficients in the modelled processes, others define properties of the model domain. For example evapotranspiration depend on model parameters for the potential rate (land use dependent) and on the water holding capacity of the soil (soil type dependent). There are also parameters that set the initial stores or flows to a general value.

Most model parameters can be calibrated. A few parameters are switches for model options. These can't be calibrated. There are also model parameters specially designed to be calibrated. They are correction parameters (sometimes called super parameters), often dependent on a larger region, that adjust the model in some general way. Some of them can simultanouely adjust several processes (this is e.g. the case for nutrients). Others correct input data (precipitation and temperature).

The following dependencies exist for HYPE model parameters;

  • general, i.e. no dependency
  • land use (land cover), a code given for each SLC class
  • soil type, a code given for each SLC class
  • month
  • parameter region (parreg), a user defined grouping of subbasins into larger regions
  • water quality parameter region (wqparreg), a user defined grouping of subbasins into larger regions, used for some WQ parameters
  • lake region, a user defined grouping of subbasins into larger regions, used for some lake parameters
  • ilake region, a user defined grouping of subbasins into larger regions, used for some ilake parameters
  • olake region, a user defined grouping of subbasins into larger regions, used for some olake parameters

File content

The file is located in the modeldir folder. One parameter is given per row with parameter name first and then values for all dependencies or one value for a general parameter. A single value may not take up more than 10 positions. Comment rows are allowed anywhere in the file and start with a double exclamation mark !! followed by a blank. In-line comments may crash the simulation. Note: If you import (and later export) a par.txt file into R using the HYPEtools package, in-line comments are moved to separate rows. The parameter names are not case sensitive, but some are written partly with capital letters to ease the interpretation. The default value is zero for all parameters except five glacier parameters for density and area-volume relationship.

Example snippet of a par.txt file structure:

!! water content for 11 soil types (defined in GeoClass.txt)
wcfc  0.100 0.120 0.120 0.050 0.250 0.250 0.150 0.050 0.500 0.500 0.050
!! threshold temperature for 2 land uses (defined in GeoClass.txt)
ttmp  0.0   0.0
!! potential evaporation limit, a general parameter 
lp    0.8
...

The table below describes all available model parameters. Unit '-' mean the parameter is dimensionless. Unit ts means time step, which can be day or hour or of some other length. The general unit (U) is used in case of parameters and input data where the unit is not defined.

Name Unit Dependency Description Link
wcfc-soil typefraction of soil available for evapotranspiration but not for runoff, same for all soil layers (used if wcfc1 not given)water content
wcwp-soil typewilting point as a fraction, same for all soil layers (used if wcwp1 not given)water content
wcep-soil typeeffective porosity as a fraction, same for all soil layers (used if wcep1 not given)water content
wcfc1-soil typefraction of soil available for evapotranspiration but not for runoff, for uppermost soil layerwater content
wcwp1-soil typewilting point as a fraction, for uppermost soil layerwater content
wcep1-soil typeeffective porosity as a fraction, for uppermost soil layerwater content
wcfc2-soil typefraction of soil available for evapotranspiration but not for runoff, for second soil layerwater content
wcwp2-soil typewilting point as a fraction, for second soil layerwater content
wcep2-soil typeeffective porosity as a fraction, for second soil layerwater content
wcfc3-soil typefraction of soil available for evapotranspiration but not for runoff, for lowest soil layerwater content
wcwp3-soil typewilting point as a fraction, for lowest soil layerwater content
wcep3-soil typeeffective porosity as a fraction, for lowest soil layerwater content
mperc1mm ts-1soil typemaximum percolation capacity from soil layer 1 to soil layer 2perc
mperc2mm ts-1soil typemaximum percolation capacity from soil layer 2 to soil layer 3perc
cmltmm °C-1 ts-1land usemelting parameter for snowsnow melt
ttmp°Cland usethreshold temperature for snow melt, snow density and evapotranspirationsnow melt snow or rain PET
ttpd°Cgeneraldeviation from ttmp for threshold temperature for snow-/rainfallsnow or rain
ttpi°Cgeneralhalf of temperature interval with mixed snow- and rainfall. Interval is (ttmp+ttpd) +/- ttpi.snow melt snow or rain
cevpmm °C-1 ts-1land useevapotranspiration parameterPET
t1evap-generalevaporation factor for substance T1 (0-1), default is 0, if 1 the substance evaporates with the watertracer T1
frostcm °C-1 or -land usefrost depth parameter (both frost and sfrost must be >0 for simulation to occur)frost
sfrost- or cm °C-1soil typefrost depth parameter (both frost and sfrost must be >0 for simulation to occur)frost
deepmemdgeneraldeep soil temperature memorysoil temp
surfmemdland useupper soil layer soil temperature memorysoil temp
depthrelm-1land usedepth relation for soil temperature memorysoil temp
rrcs1ts-1soil typerecession coefficient for uppermost soil layerrunoff
rrcs2ts-1soil typerecession coefficient for lowest soil layerrunoff
rrcs3ts-1 %-1generalrecession coefficient for slope dependence (upper layer)runoff
srrcsts-1land userecession coefficient for surface runoff (fraction), should be set to 1 for lake and riverclasses with floodplainssurface runoff
trrcsts-1soil typerecession coefficient for tile drainstile runoff
rrcscorr-parregcorrection factor for recession rrcs=rrcs(1+rrcscorr) for rrcs1,rrcs2,trrcs and srrcsrunoff tile runoff surface runoff
cevpam-generalamplitude of sinus function (about 1) that corrects potential evapotranspiration.PET
cevpphdgeneralphase of sinus function that corrects potential evapotranspirationPET
cevpcorr-parregcorrection factor for evapotranspiration cevap=evap(1+cevpcorr)PET
lp-generalfactor for calculating the soil water limit for potential evapotranspirationevap
gratk-generalparameter of rating curve for lake outflow Q=gratk*(w-w0)^gratprating curve
gratp-generalparameter of rating curve for lake outflow Q=gratk*(w-w0)^gratprating curve
grata-generalupstream area dependence of discharge curve for lake, if grata>0 and uparea>0 Q=(gratk*(uparea)^grata)*(w-w0)^gratprating curve
limqprod-generallimit for water stage with reduced production flow from dam (fraction of regulating volume) (can also be defined in LakeData.txt)
krelflood-generalfactor for increased production flow from flood control dam
kthrflood-generalfactor for flow threshold for increased production flow from flood control dam
klowflood-generalfactor for water level threshold with production flow from flood control dam equal to inflow
rivvelm s-1generalcelerity of flood in watercourse (rivvel>0)river
damp-generalfraction of delay in the watercourse which also causes dampingriver
deadlm2 km-2generalparameter to calculate the dead volume in the local watercourseriver
deadmm2 km-2generalparameter to calculate the dead volume in the main watercourseriver
tcalt°C (100m)-1generalparameter for temperature’s elevation dependence, uses SLC’s deviation from subbasin mean height (=0.6°C/100m)temp
tempcorr°Cparregcorrection parameter for temperaturetemp
tcelevadd°C (100m)-1generalparameter for temperature’s elevation dependence, uses subbasin mean heighttemp
tcobselev°C (100m)-1generalparameter for temperature correction due to observation elevation deviation from subbasin elevationtemp
monthlapse°C (100m)-1monthalternative parameter for temperature correction with elevation, monthly temperature lapse rate (positive when decresasing with elevation, same as tcalt and tcelevadd)temp
pcaddg-generalcorrection parameter for precipitationprec
pcurain-generalundercatch correction for rainfall, rainfall = rainfall * (1+pcurain). The correction is applied at the observation level, before using any elevation corrections to basin mean elevation or class specific elevations. Since the snowfall threshold temperature is landuse specific, the correction is weighted depending on the areal fractions of the landuse classes. The same applies to the pcusnow parameter
pcusnow-generalundercatch correction for snowfall, snowfall = snowfall*(1+pcusnow). See notes for pcurain.
pcluse-land usecorrection factor for precipitation prec=prec(1-pcluse)prec
pcelevadd(100m)-1generalcorrection parameter for precipitation (per 100 m elevation > pcelevth)prec
pcelevthmgeneralelevation above which the precipitation correction pcelevadd is usedprec
pcelevmax-generalmaximum for height dependent precipitation correctionprec
pcelevstd(100m)-1generalcorrection parameter for precipitation (per 100 m of elevation standard deviation)prec
preccorr-parregcorrection factor for precipitation prec=prec(1+preccorr)prec
gldepimgeneraldepth for all ilakeslake
denitrlud-1land useparameter for denitrification in soildenitrif
denitrlu3d-1land usedenitrification rate in third soil layer, replaces denitrlu if set to > 0. If only used for some land use classes, set to -1 for all other.denitrif
degradhpd-1land usedecay of humus to fastPNP soil
degradhnd-1land usedecay of humus to fastNNP soil
minerfnd-1land usemineralisation of fastN to inorganic NNP soil
minerfpd-1land usemineralisation of fastP to SRPNP soil
dissolfpd-1land usedecay of fastP to dissolved PPNP soil
dissolfnd-1land usedecay of fastN to dissolved organic NNP soil
dissolhpd-1land usedecay of humusP to dissolved PPNP soil
dissolhnd-1land usedecay of humusN to dissolved organic NNP soil
wprodnkg m-3 d-1generalproduction/decay of N in water (can also be defined in LakeData.txt)NP river lake
wprodpkg m-3 d-1generalproduction/decay of P in water (can also be defined in LakeData.txt)NP river lake
wprodckg m-3 d-1generalproduction/decay of OC in water (can also be defined in LakeData.txt)C river lake
hsatTPmg L-1generalhalf saturation concentration of TP for production and mineralisation in surface waterNP river lake C river lake
hsatINsmg L-1generalhalf saturation concentration of IN for denitrification in soildenitrif
hsatINwmg L-1generalhalf saturation concentration of IN for denitrification in surface waterdenitrif
denitwrlkg m-2 d-1generalparameter for denitrification in local watercoursedenitrif
denitwrmkg m-2 d-1generalparameter for denitrification in main watercoursedenitrif
denitwlkg m-2 d-1generalparameter for denitrification in lakes (can also be defined in LakeData.txt)denitrif
sedonm ts-1generalsedimentation rate of ON in lakes (can also be defined in LakeData.txt)NP lake
sedppm ts-1generalsedimentation rate of PP in lakes (can also be defined in LakeData.txt)NP lake
sedexp-generalparameter for sedimentation/resuspension in watercoursesP river
limsedONmg L-1generalconcentration of ON deducted from conc in water when sedimentation is calculated. This should represent the dissolved organic nitrogen.NP lake
limsedPPmg L-1generalconcentration of PP deducted from concentration in water when sedimentation is calculated. This concentration is also deducted from the mean TP concentration when calculating half-saturation factor in the mineralization/production routine.NP lake NP lake C river lake
humusN0mg m-3land usestarting concentration of humusN soil poolNP soil
humusP0mg m-3land usestarting concentration of humusP soil poolNP soil
fastN0mg m-3generalstarting concentration of fastN soil poolNP soil
partP0mg m-3land usestarting concentration of partP soil poolNP soil
fastP0mg m-3generalstarting concentration of fastP soil poolNP soil
occonc0mg L-1land usestarting value, organic carbon concentration in soil
onconc0mg L-1land usestarting value, organic nitrogen concentration in soilNP soil
ppconc0mg L-1land usestarting value, particulate phosphorus concentration in soilNP soil
onpercred-land usereduction of ON concentration during percolation NP perc
pppercred-land usereduction of PP concentration during percolation NP perc
pPhalfmland usehalf depth for partP soil poolNP soil
hPhalfmland usehalf depth for humusP soil poolNP soil
hNhalfmland usehalf depth for humusN soil poolNP soil
iniT1µU L-1generalstarting value in soil, concentration T1tracer T1
iniT1swµU L-1generalstarting value in surface water, concentration T1tracer T1
iniT2°Cgeneralstarting value in soil, T2 (temperature)tracer T2
freuckg-1soil typeparameter in Freundlich equation (coefficient)P soil
freuexp-soil typeparameter in Freundlich equation (exponent)P soil
freurated-1soil typeparameter that steers adsorption/desorption speedP soil
locsoil-generalfraction of emission from rural waste water that is emitted to directly to the lowest soil layer (rest goes to the local watercourse)rural
drydepppkg km-2 d-1land usedry deposition of PPdeposition
wetdepspµg L-1generalwet deposition of SPdeposition
aloadconst-generalstatus to keep wet deposition load constant if precipitation is corrected (if set to 1, 0 is default)deposition
ponatm-land usecorrection factor for atmospheric deposition of IN, fraction that goes to fastN-pool insteaddeposition
srrate-soil typefraction for surface runoffsurface runoff
macrate-soil typefraction for macro-pore flowmacropore
mactrinfmm ts-1soil typethreshold for macro-pore flowmacropore
mactrsm-soil typethreshold soil water for macro-pore flow and surface runoff (fraction of wcwp+wcfc i uppermost layer)macropore and surface runoff
soilcohkPasoil typecharacteristic of soil for calculation of soil erosion (cohesion)erosion
soilerodg J-1soil typecharacteristic of soil for calculation of soil erosion (erodibility)erosion
epotdistm-1generalcoefficient in exponential function for potential evapotranspiration's depth dependencyPET
qmeanmm yr-1generalinitial value for calculation of mean flow (can also be defined in LakeData.txt)
tpmeanmg L-1lake regionmean TP level in lakes, used for production if P not simulated, used also as starting value for concentration of particulate P in lakes. Can also be defined in LakeData.txtNP lake
tnmeanmg L-1lake regionmean TN level i lakes, used as starting value for concentration of organic N in lakes. Can also be defined in LakeData.txt
rivvel1-lake regionparameter for calculation of velocity of the water in the watercourseriver
rivvel2-lake regionparameter for calculation of velocity of the water in the watercourseriver
rivvel3-lake regionparameter for calculation of velocity of the water in the watercourseriver
rivwidth1-lake regionparameter for calculation of the width of the watercourseriver
rivwidth2-lake regionparameter for calculation of the width of the watercourseriver
rivwidth3-lake regionparameter for calculation of the width of the watercourseriver
maxwidthmgeneralparameter for limitation of width of the watercourseriver
sreroexp-generalexponent in the equation for calculation of soil erosion caused by surface runofferosion
pprelmaxmm ts-1generalparameter for PP from surface runoff and tile drainserosion
pprelexp-generalparameter for PP from surface runoff and tile drainserosion
bufffilt-land usefiltration of PartP with surface runoff through the buffer zone (fraction that slips through), 0 for land-uses where this is irrelevanterosion
innerfilt-land usefiltration of PartP with surface runoff from agricultural land far from watercourse (fraction that slips through), 0 for land-uses where this is irrelevanterosion
otherfilt-land usefiltration of PartP with surface runoff from other land types than agricultural land (fraction that slips through), 0 for land-uses where this is irrelevanterosion
macrofilt-soil typefiltration (retention) of PartP with macropore flow (fraction)erosion
sdnsnewg cm-3generaldensity of new-fallen snow (former snowdens0)snow
snowdensdtg cm-3 ts-1generalincrease of snow density per daysnow
sdnsmaxg cm-3generalmaximum snow densitysnow
sdnsratets-1generalincrease of snow density per timestepsnow
sdnsraddts-1generaladditional increase of snow density per timestep for warm dayssnow
fertdaysdgeneralnumber of days that fertiliser applications occur counting from application day 1 and forward using the same amount every dayfertilizer
litterdaysdgeneralnumber of days that plant residuals are applied counting from application day 1 and forward using the same amount every day
humusc1mg m-3land usestarting concentration for humusC pool in soil’s uppermost soil layerC soil
fastc1mg m-3land usestarting concentration for fastC pool in soil’s uppermost soil layerC soil
humusc2mg m-3land usestarting concentration for humusC pool in soil’s second soil layerC soil
fastc2mg m-3land usestarting concentration for fastC pool in soil’s second soil layerC soil
humusc3mg m-3land usestarting concentration for humusC pool in soil lowest soil layerC soil
fastc3mg m-3land usestarting concentration for fastC pool in soil lowest soil layerC soil
klhd-1generalparameter for speed of transformation from litter to humusC soil
klod-1generalparameter for speed of transformation from litter to DOCC soil
khod-1generalparameter for speed of transformation from humus to DOCC soil
kofd-1generalparameter for speed of transformation from DOC to fastCC soil
koflim-generalparameter for threshold for wetness for transformation DOC to fastCC soil
koc-generalparameter for DOC-concentrations reduction for percolationC soil
kcgwreg-generalparameter for DOC-concentrations reduction with flow out to regional groundwaterC soil
sedocm ts-1generalsedimentation rate OC in lakes. Can also be defined in LakeData.txt.C lake
ripz-land useparameter for OC processes in riparian zoneC riparian
ripem-1generalexponent for groundwater depth dependence of OC processes in riparian zonesC riparian
rips-generalseasonal factor for OC processes in riparian zonesC riparian
tocmeanmg L-1lake regionmean OC fraction in lakes, used that starting value for concentrations of TOC in lakes (can also be defined in LakeData.txt)
minc-generalfraction of transformation mineralised to DICC soil
ocsoimsat-land usesaturation in soil moisture function for degradation of soil organic carbonC soil
ocsoimslp%land useslope in soil moisture function for degradation of soil organic carbonC soil
deeplake-generalpart of the lake's initial volume which is considered as slow (SLP). 0 means that the lake is not divided into a slow and a fast part. Value larger than 1 means the initial volume is all slow part, but a fast part may form at high water levels. Can also be defined in LakeData.txt. Use deeplake=0 if floodplains are simulatedlake
fastlake-generalpart of a lake outflow that comes from the fast lake part (FLP), 0-1. Can also be defined in LakeData.txt.lake
laketempdgeneralmaximum value for depth dependent lake temperature routine, 0 means that this function is not used.
snalbmin-land useparameter for snowmelt model 2
snalbmax-land useparameter for snowmelt model 2
snalbkexpts-1land useparameter for snowmelt model 2
cmradmm m2 MJ-1land usecoefficient for radiation snow melt, parameter for snowmelt model 2
t2trriverJ m-2 s-1 °C-1generalheat transfer parameter for water temperature T2 of river
t2trlakeJ m-2 s-1 °C-1generalheat transfer parameter for water temperature T2 of lake
upper2deepJ m-2 s-1 °C-1generalheat transfer parameter for water temperature T2 between lake parts
tcfriverJ m-2 s-1 °C-1generalair-riverwater heat flow, temperature difference coefficientwater - atmosphere T2 exchange
scfrivergeneralair-riverwater heat flow, solar radiation coefficientwater - atmosphere T2 exchange
ccfrivergeneralair-riverwater heat flow, constant coefficientwater - atmosphere T2 exchange
lcfrivergeneralair-riverwater heat flow, linear coefficientwater - atmosphere T2 exchange
tcflakeJ m-2 s-1 °C-1generalair-lakewater heat flow, temperature difference coefficientwater - atmosphere T2 exchange
scflakegeneralair-lakewater heat flow, solar radiation coefficientwater - atmosphere T2 exchange
ccflakegeneralair-lakewater heat flow, constant coefficientwater - atmosphere T2 exchange
lcflakegeneralair-lakewater heat flow, linear coefficientwater - atmosphere T2 exchange
stbcorr1generalparameter for stability correction
stbcorr2generalparameter for stability correction
stbcorr3generalparameter for stability correction
licettf°Cgenerallake ice model, water temperature threshold for freeze-up
licetf°Cgenerallake ice model, freezing temperature
licesndensg cm-3 ts-1generallake ice model, snow compaction parameter
licekikacmgenerallake ice model, ratio between thermal conductivity of ice and heat exchange coefficient in air
licekexp-generallake ice model, water temperature threshold for freeze-up
licetmeltcm °C-1generallake ice model, melt factor for ice
licewcorr-generallake ice model, snowfall reduction for wind drift
ricettf°Cgeneralriver ice model, water temperature threshold for freeze-up
ricetf°Cgeneralriver ice model, freezing temperature
ricesndensg cm-3 ts-1generalriver ice model, snow compaction parameter
ricekikacmgeneralriver ice model, ratio between thermal conductivity of ice and heat exchange coefficient in air
ricekexp-generalriver ice model, water temperature threshold for freeze-up
ricetmeltcm °C-1generalriver ice model, melt factor for ice
fscmax-generalmaximum fractional snow cover areasnow cover
fscmin-generalminimum fractional snow cover areasnow cover
fsclim-generallimit of fractional snow cover area for onset of snowmaxsnow cover
fscdistmax-land usemaximum snow distribution factorsnow cover
fscdist0-land useminimum snow distribution factorsnow cover
fscdist1m-1land usestd coefficient for snow distribution factorsnow cover
fsck1-generalparameter for snowmaxsnow cover
fsckexps-1generalparameter for snowmaxsnow cover
fsceff-generalefficiency of snow cover to influence snow melt and snow evaporation, should have values between 0 and 1. A value of 1 means that snow melt will be linearly scaled with snow cover: melt = melt*(1-fsc*(1-snowcov)).
cmrefr-generalrefreeze efficiency compared to the degree-day snow melt factor: refreeze=cmrefr*cmlt*(tt-temp) if temp<tt. Used for snow melt model 2.
fepotsnow-generalfraction of snow-free potential evapotranspiration, used for calculation of snow evaporation.
krsgeneralparameter for petmodel 3 - Modified Hargreaves-Samani, Hargreaves adjustment factorPET input data
jhtaddgeneralparameter for petmodel 2 - Modified Jensen-Haise/McGuinessPET
jhtscalegeneralparameter for petmodel 2 - Modified Jensen-Haise/McGuinessPET
alfaptgeneralparameter for petmodel 4 - Priestly-TaylorPET
mwindm s-1generalaverage wind speed, used for petmodel 5 when no wind forcing is availablewind
zwindmgeneralwind observation height, typical value is 10wind
zwishmgeneralwanted wind height, typical value is 2wind
zpdhmgeneralzero plane displacement heightwind
roughness-generalsurface roughness (for observed wind)wind
kc-land usecrop coefficient for petmodels, default parameterPET
kc2-land usecrop coefficient for petmodel 2, if not set kc is usedPET
kc3-land usecrop coefficient for petmodel 3, if not set kc is usedPET
kc4-land usecrop coefficient for petmodel 4, if not set kc is usedPET
kc5-land usecrop coefficient for petmodel 5, if not set kc is usedPET
alb-land usealbedo for petmodelsnet downward radiation
incorr-wqparregsuper-parameter, regional correction factor for parameter governing inorganic nitrogen:
par=par*(1+incorr)
for degradhn and
par = par * (1 - incorr)
for denitrlu, denitwl, denitwrm, and denitwrl
Note: denitwl in LakeData.txt will also be affected by this correction factor
oncorr-wqparregsuper-parameter, regional correction factor for parameter governing organic nitrogen:
par=par*(1+oncorr)
for dissolhn and
par=par*(1-oncorr) for sedon
Note: sedon in LakeData.txt will also be affected by this correction factor
phoscorr-wqparregsuper-parameter, regional correction factor for parameter governing phosphorus:
par=par*(1+phoscorr) for soilerod, dissolhP, fastP0, humusP0, and partP0
ratcorr-parregcorrection factor for discharge gratk=gratk(1+ratcorr)rating curve
pirrs-parregirrigation abstraction fraction from surface water sources. Controls the amount of potentially withdrawable surface water that is in fact abstracted. pirrs=1 implies full withdrawal. pirrs=0 if not set.irrigation abstraction
pirrg-parregirrigation abstraction fraction from groundwater. Controls the amount of potentially withdrawable groundwater that is in fact abstracted. pirrg=1 implies full withdrawal. pirrg=0 if not set.irrigation abstraction
sswcorr-generalrescaling factor for the soil water stress irrigation threshold. sswcorr=1 implies no rescaling. sswcorr=0 if not set.irrigation demand
iwdfrac-generalfraction of the irrigation threshold which constitutes irrigation water demand. Note iwdfrac can be >1. Only used if demandtype=3.irrigation demand
regirr-generalconnectivity scaling factor for the regional irrigation water abstractions. Regirr=1 implies full connectivity while regirr=0.5 implies that only half of regional demands are taken into accountirrigation abstraction
irrdemandmm ts-1generalthe irrigation water demand for subbasins with demandtype=1irrigation demand
immdepthmmgeneraltarget submergence depth for submerged irrigated cropsirrigation demand
cirrsink-parregconcentration reduction fraction in settlement tanks at irrigation abstraction pointsirrigation abstraction
irrcomp-generalirrigation source compensation parameter. Irrcomp defines the fraction of the residual irrigation water demands which can be withdrawn from other local sources. Irrcomp=0 if not set.irrigation abstraction
glacdensm3 water (m3 ice)-1generaldensity of glacier ice (default value=0.85)
glac2arlimm2generalarea limit for determine glacier typeglacier
glacvcoefmgeneralcoefficient of glacier area-volume relationship for glacier of type 0 (default), (default value=0.205)glacier
glacvexp-generalexponent of glacier area-volume relationship for glacier of type 0 (default), (default value=1.375)glacier
glacvcoef1mgeneralcoefficient of glacier area-volume relationship for glacier of type 1, (default value=1.701)glacier
glacvexp1-generalexponent of glacier area-volume relationship for glacier of type 1, (default value=1.25)glacier
glaccmltmm °C-1 ts-1generalmelting parameter for glacierglacier
glacttmp°Cgeneralthreshold temperature for glacier meltglacier
glaccmradmm m2 MJ-1generalcoefficient for radiation glacier melt, parameter for snowmelt model 2glacier
glaccmrefr-generalrefreeze efficiency compared to the degree-day glacier melt factor, parameter for snow meltmodel 2glacier
glacalb-generalalbedo for glacier iceglacier
fepotglac-generalfraction of snow-free potential evapotranspiration, used for calculation of glacier evaporation (snowevaporation model 1).glacier
rcgrw-generalrecession coefficient for regional groundwater outflow from soil layers (deepground=1 (and 2))deep flow or aquifer
rcgrwst-soil typerecession coefficient for deep percolation flow out of soil layers (deepground=2)aquifer
aqretcor-parreg (of aquifer)adjustment of recession coefficients newpar=oldpar(1+aqcor) for aquifer return flowaquifer
aqdelcor-parreg (of aquifer)adjustment of deep percolation delay to aquifers newpar=oldpar(1+aqcor) for aquifer return flowaquifer
aqpercor-parreg (of subbasin)adjustment of deep percolation to aquifers newpar=oldpar(1+aqcor) for aquifer return flowaquifer
optonoff-generalswitch (0/1) for using general parameters op1-opt8 instead of flooding data of FloodData.txt (1=use op1-opt8)
opt1mgeneralparameter replacing FloodData.txt values of flollfloodplain
opt2mgeneralparameter replacing FloodData.txt values of flolpfloodplain
opt3mgeneralparameter replacing FloodData.txt values of flmrrfloodplain
opt4mgeneralparameter replacing FloodData.txt values of flmrpfloodplain
opt5-generalparameter replacing FloodData.txt values of rclfp and rcrfpfloodplain
opt6mgeneralparameter replacing FloodData.txt values of fymolfloodplain
opt7mgeneralparameter replacing FloodData.txt values of fymmrfloodplain
opt8-generalparameter replacing FloodData.txt values of rcfpl and rcfprfloodplain
limT2exchmgenerallimit for which deeper river and lakes use surface water heat balance radiation term and other terms (used for modeloption lakeriverice 2)
t2mix-generalswitch (0/1) for using mixed lake T2 temperature on outflow of lake (can also be set in LakeData.txt)lake outflow
T1expdecdaysgeneralhalf time for exponential decay of T1. Applied to T1 in soil water and surface water (but not in snow). Also applied to T1 in pool above soil, adsorbed to soil and in river sediment.tracer T1
T1freucL/kg soil or ( (U/kg soil)/(U/L) )generalfreundlich adsorption isoterm coefficient for adsorption/desorption of T1 to soil.tracer T1
T1relmm-1generalrelease of T1 from above soil pool. Typically the pool consist of manure.tracer T1
T1sedexp-generalparameter for sedimentation/resuspension of T1 in watercoursestracer T1
T1sedvelm/timestepgeneralsedimentation rate of T1 in lakestracer T1
T1leakluseµU/L or -land usetypical leakage concentration of T1 depending on land use or a scaling factor to typical leakage concentration depending on soil typetracer T1
T1leaksoilµU/L or -soil typetypical leakage concentration of T1 depending onsoil type or a scaling factor to typical leakage concentration depending on land usetracer T1
soilcorr-land usefactor used to adjust the thicknesses of soil layer 2 and 3 as given in GeoClass. Must be larger than zero if used.
ttrigdegree Celsiusland usetemperature threshold for soil temperature control on soil evapotranspirationevaporation
treda-land usesoil temperature control on soil evapotranspirationevaporation
tredb-land usesoil temperature control on soil evapotranspirationevaporation
gldepomgeneraldepth of olake, replaces lake_depth in GeoData if zero or negative
gicatch-generalfraction of local runoff which runs through the local lake (ilake), the rests runs directly into the main watercourse, replaces icatch in GeoData if negative or column missing and ilicatch not set
ilratk-ilakeregionparameter of rating curve for ilake outflow (rate), replaces gratk if above zero
ilratp-ilakeregionparameter of rating curve for ilake outflow (exponent), replaces gratp if above zero
illdepthmilakeregiondepth for ilakes
ilicatch-ilakeregionfraction of local runoff which runs through the local lake (ilake), the rests runs directly into the main watercourse, replaces icatch in GeoData if negative or column missing
olratk-olakeregionparameter of rating curve for outlet lake outflow (rate), replaces gratk if above zero
olratp-olakeregionparameter of rating curve for outlet lake outflow (exponent), replaces gratp if above zero
olldepthmolakeregiondepth for outlet lakes, replaces lake_depth in GeoData if zero or negative
glacannmbmm/yrgeneralannual mass balance for correction of initial glacier volumeglacier
denit3regd-1wqparregparameter for denitrification in soil layer 3, replaces other denitrification rate parameter (denitrlu or denitrlu3) in third soil layer if >0
erodluse-land useerosion model 1 landuse erosion factorerosion
erodsoil-soil typeerosion model 1 soil type erosion factorerosion
erodslope-generalerosion model 1 slope erosion factor (exponent)erosion
erodexp-generalerosion model 1 erosion precipitation dependent factor (exponent)erosion
erodindex-generalerosion model 1 scaling of subbasin erosion indexerosion
sedssm ts-1generalsedimentation velocity of suspended sediments in lakessedimentation
limsedssmg L-1generalconcentration of SS deducted from concentration in water when sedimentation is calculatedsedimentation
sedaem ts-1generalsedimentation velocity of algae in lakessedimentation
start/hype_file_reference/par.txt.txt · Last modified: 2017/07/10 10:54 by cpers