The pre-processor to generate the graph of hydrological transfer units (HTU) for the atmospheric grid on which ORCHIDEE runs. The generation is performed automatically based on various hydrological digital elevation datasets with flow directions. The version provided here has been frozen for the studies presented in : Hydrological modelling on atmospheric grids; using graphs of sub-grid elements to transport energy and water, Jan Polcher, Anthony Schrapffer, Eliott Dupont, Lucia Rinchiuso, Xudong Zhou, Olivier Boucher, Emmanuel Mouche, Catherine Ottlé, and Jérôme Servonnat, GMD, 2022. The evolution of the code is available here : https://gitlab.in2p3.fr/ipsl/lmd/intro/routingpp

The archived file includes the following items in support of the publication in GMD : - The code of the Routing pre-processor (RoutingPreProc) written in Python and FORTRAN. - The NetCDF files containing the descriptions of the 4 grids on which the working of RoutingPreProc is exemplified. - The two high resolution hydrological digital elevation models used in the validation : MERIT and HydroSHEDS. Both are NetCDF files.