RunModel_GR1A {airGR}R Documentation

Run with the GR1A hydrological model


Function which performs a single run for the GR1A annual lumped model over the test period.


RunModel_GR1A(InputsModel, RunOptions, Param)



[object of class InputsModel] see CreateInputsModel for details


[object of class RunOptions] see CreateRunOptions for details


[numeric] vector of 1 parameter

GR1A X1 model parameter [-]


For further details on the model, see the references section.
For further details on the argument structures and initialisation options, see CreateRunOptions.


[list] containing the function outputs organised as follows:

$DatesR [POSIXlt] series of dates
$PotEvap [numeric] series of input potential evapotranspiration [mm/y]
$Precip [numeric] series of input total precipitation [mm/y]
$Qsim [numeric] series of simulated discharge [mm/y]
RunOptions$WarmUpQsim [numeric] series of simulated discharge (Q) on the warm-up period [mm/y]
RunOptions$Param [numeric] parameter set parameter set used by the model
$StateEnd [numeric] states at the end of the run (NULL) [-]

Refer to the provided references or to the package source code for further details on these model outputs.


Laurent Coron, Claude Michel, Olivier Delaigue, Guillaume Thirel


Mouelhi S. (2003). Vers une chaîne cohérente de modèles pluie-débit conceptuels globaux aux pas de temps pluriannuel, annuel, mensuel et journalier. PhD thesis (in French), ENGREF - Cemagref Antony, France.

See Also

CreateInputsModel, CreateRunOptions.



## loading catchment data

## conversion of example data from daily to yearly time step
TabSeries <- data.frame(DatesR = BasinObs$DatesR,
                        P = BasinObs$P,
                        E = BasinObs$E,
                        Qmm = BasinObs$Qmm)
TabSeries <- TabSeries[TabSeries$DatesR < as.POSIXct("2012-09-01", tz = "UTC"), ]
BasinObs <- SeriesAggreg(TabSeries, Format = "%Y",
                         YearFirstMonth = 09,
                         ConvertFun = c("sum", "sum", "sum"))

## preparation of the InputsModel object
InputsModel <- CreateInputsModel(FUN_MOD = RunModel_GR1A, DatesR = BasinObs$DatesR,
                                 Precip = BasinObs$P, PotEvap = BasinObs$E)

## run period selection
Ind_Run <- seq(which(format(BasinObs$DatesR, format = "%Y")=="1990"),
               which(format(BasinObs$DatesR, format = "%Y")=="1999"))

## preparation of the RunOptions object
RunOptions <- CreateRunOptions(FUN_MOD = RunModel_GR1A,
                               InputsModel = InputsModel, IndPeriod_Run = Ind_Run)

## simulation
Param <- c(X1 = 0.840)
OutputsModel <- RunModel_GR1A(InputsModel = InputsModel, RunOptions = RunOptions, Param = Param)

## results preview
plot(OutputsModel, Qobs = BasinObs$Qmm[Ind_Run])

## efficiency criterion: Nash-Sutcliffe Efficiency
InputsCrit  <- CreateInputsCrit(FUN_CRIT = ErrorCrit_NSE, InputsModel = InputsModel,
                                RunOptions = RunOptions, Obs = BasinObs$Qmm[Ind_Run])
OutputsCrit <- ErrorCrit_NSE(InputsCrit = InputsCrit, OutputsModel = OutputsModel)

[Package airGR version 1.7.6 Index]