# airGR: Suite of GR Hydrological Models for Precipitation-Runoff Modelling
## Overview
This package brings into R the hydrological modelling tools used at INRAE-Antony ([Catchment Hydrology research group](https://webgr.inrae.fr/en/) of the HYCAR Research Unit, France), including rainfall-runoff models (**GR4H**, **GR5H**, **GR4J**, **GR5J**, **GR6J**, **GR2M**, **GR1A**) and a snow accumulation and melt model (**CemaNeige**). Each model core is coded in FORTRAN to ensure low computational time. The other package functions (i.e. mainly the calibration algorithm and the computation of the efficiency criteria) are coded in R.
This package brings into R the hydrological modelling tools developed at INRAE-Antony ([Catchment Hydrology research group](https://webgr.inrae.fr/en/) of the HYCAR Research Unit, France), including rainfall-runoff models (**GR4H**, **GR5H**, **GR4J**, **GR5J**, **GR6J**, **GR2M**, **GR1A**) and a snow accumulation and melt model (**CemaNeige**). Each model core is coded in Fortran to ensure low computational time. The other package functions (i.e. mainly the calibration algorithm and the computation of the efficiency criteria) are coded in R.
\title{Suite of GR Hydrological Models for Precipitation-Runoff Modelling}
\description{
This package brings into R the hydrological modelling tools used at INRAE-Antony (formerly IRSTEA, HYCAR Research Unit, France), including rainfall-runoff models (\strong{GR4H}, \strong{GR5H}, \strong{GR4J}, \strong{GR5J}, \strong{GR6J}, \strong{GR2M}, \strong{GR1A}) and a snow accumulation and melt model (\strong{CemaNeige}). Each model core is coded in FORTRAN to ensure low computational time. The other package functions (i.e. mainly the calibration algorithm and the computation of the efficiency criteria) are coded in R. \cr\cr
This package brings into R the hydrological modelling tools developed at INRAE-Antony (formerly IRSTEA, HYCAR Research Unit, France), including rainfall-runoff models (\strong{GR4H}, \strong{GR5H}, \strong{GR4J}, \strong{GR5J}, \strong{GR6J}, \strong{GR2M}, \strong{GR1A}) and a snow accumulation and melt model (\strong{CemaNeige}). Each model core is coded in Fortran to ensure low computational time. The other package functions (i.e. mainly the calibration algorithm and the computation of the efficiency criteria) are coded in R. \cr\cr