To obtain help regarding the use of the airGRteaching or airGR packages, or to suggest modifications, send an email to


airGRteaching is a package developed in the language devoted to the use of the GR rainfall-runoff models and the CemaNeige snowmelt and accumulation model by students and teachers.

airGRteaching is an add-on package of the airGR hydrological package.

It simplifies the use of the airGR functionalities as it only requires a basic level of programming.
The GR hydrological models in a few words: * lumped conceptual rainfall-runoff models (GR1A, GR2M, GR4J, GR5J, GR6J, GR4H and GR5H) * designed with the objective to be as efficient as possible for flow simulation at various time steps (from annual to hourly) * their structures were developed to have warranted complexity and limited data requirements * can be applied on a wide range of conditions, including snowy catchments (thanks to the CemaNeige snow model)

airGRteaching functionalities

See the “Functionalities” tab for examples including commands.

airGR functionalities