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% Please edit documentation in R/RunModel_GR4J.R
\encoding{UTF-8}
\name{RunModel_GR4J}
\alias{RunModel_GR4J}
\title{Run with the GR4J hydrological model}
\usage{
RunModel_GR4J(InputsModel, RunOptions, Param)
}
\arguments{
\item{InputsModel}{[object of class \emph{InputsModel}] see \code{\link{CreateInputsModel}} for details}
\item{RunOptions}{[object of class \emph{RunOptions}] see \code{\link{CreateRunOptions}} for details}
\item{Param}{[numeric] vector of 4 parameters
GR4J X1 \tab production store capacity [mm] \cr
GR4J X2 \tab intercatchment exchange coefficient [mm/d] \cr
GR4J X3 \tab routing store capacity [mm] \cr
GR4J X4 \tab unit hydrograph time constant [d] \cr
}}
}
\value{
[list] list containing the function outputs organised as follows:
\tabular{ll}{
\emph{$DatesR } \tab [POSIXlt] series of dates \cr
\emph{$PotEvap } \tab [numeric] series of input potential evapotranspiration [mm/d] \cr
\emph{$Precip } \tab [numeric] series of input total precipitation [mm/d] \cr
\emph{$Prod } \tab [numeric] series of production store level (X(2)) [mm] \cr
\emph{$AE } \tab [numeric] series of actual evapotranspiration [mm/d] \cr
\emph{$Perc } \tab [numeric] series of percolation (PERC) [mm/d] \cr
\emph{$PR } \tab [numeric] series of PR=PN-PS+PERC [mm/d] \cr
\emph{$Q9 } \tab [numeric] series of HU1 outflow (Q9) [mm/d] \cr
\emph{$Q1 } \tab [numeric] series of HU2 outflow (Q1) [mm/d] \cr
\emph{$Rout } \tab [numeric] series of routing store level (X(1)) [mm] \cr
\emph{$Exch } \tab [numeric] series of potential semi-exchange between catchments [mm/d] \cr
\emph{$AExch } \tab [numeric] series of actual exchange between catchments (1+2) [mm/d] \cr
\emph{$QR } \tab [numeric] series of routing store outflow (QR) [mm/d] \cr
\emph{$QD } \tab [numeric] series of direct flow from HU2 after exchange (QD) [mm/d] \cr
\emph{$Qsim } \tab [numeric] series of Qsim [mm/d] \cr
\emph{$StateEnd} \tab [numeric] states at the end of the run (res. levels, HU1 levels, HU2 levels) [mm] \cr
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(refer to the provided references or to the package source code for further details on these model outputs)
}
\description{
Function which performs a single run for the GR4J daily lumped model.
}
\details{
For further details on the model, see the references section.
For further details on the argument structures and initialisation options, see \code{\link{CreateRunOptions}}.
}
\examples{
## load of catchment data
require(airGR)
data(L0123001)
## preparation of the InputsModel object
InputsModel <- CreateInputsModel(FUN_MOD=RunModel_GR4J,DatesR=BasinObs$DatesR,
Precip=BasinObs$P,PotEvap=BasinObs$E)
## run period selection
Ind_Run <- seq(which(format(BasinObs$DatesR,format="\%d/\%m/\%Y \%H:\%M")=="01/01/1990 00:00"),
which(format(BasinObs$DatesR,format="\%d/\%m/\%Y \%H:\%M")=="31/12/1999 00:00"))
## preparation of the RunOptions object
RunOptions <- CreateRunOptions(FUN_MOD=RunModel_GR4J,InputsModel=InputsModel,IndPeriod_Run=Ind_Run)
## simulation
Param <- c(257.238,1.012,88.235,2.208)
OutputsModel <- RunModel_GR4J(InputsModel=InputsModel,RunOptions=RunOptions,Param=Param)
## results preview
plot_OutputsModel(OutputsModel=OutputsModel,Qobs=BasinObs$Qmm[Ind_Run])
## efficiency criterion: Nash-Sutcliffe Efficiency
InputsCrit <- CreateInputsCrit(FUN_CRIT=ErrorCrit_NSE,InputsModel=InputsModel,
RunOptions=RunOptions,Qobs=BasinObs$Qmm[Ind_Run])
OutputsCrit <- ErrorCrit_NSE(InputsCrit=InputsCrit,OutputsModel=OutputsModel)
cat(paste(" Crit ",OutputsCrit$CritName," ",round(OutputsCrit$CritValue,4),"\\n",sep=""))
}
\author{
Laurent Coron (December 2013)
}
\references{
Perrin, C., C. Michel and V. Andréassian (2003),
Improvement of a parsimonious model for streamflow simulation,
Journal of Hydrology, 279(1-4), 275-289, doi:10.1016/S0022-1694(03)00225-7.
}
\seealso{
\code{\link{RunModel_GR5J}}, \code{\link{RunModel_GR6J}}, \code{\link{RunModel_CemaNeigeGR4J}},
\code{\link{CreateInputsModel}}, \code{\link{CreateRunOptions}}.
}