IrrigationMapV0 and initial files to reproduce the simulation

DATA supplementary to the corresponding article submitted to/published in Geosci. Model Dev.: Druel, A., Munier, S., Mucia, A., Albergel, C., and Calvet, J.-C.: Implementation and validation of a new crop and irrigation scheme in the ISBA land surface model, 2022. irrigcover_v0.tar.gz: Irrigation map 300 m x 300 m used for irrigation in ECOCLIMAP-SG. From a spatial resampling from the 1 km x 1km map of Meier et al, 2017. PGD.nc contains the initial characteristics of the simulation, such as the fraction of irrigation. It's computed at the beginning of the simulation and ensures the accuracy of the initial configuration. PREP.nc contains the result of the 20 year spinup (by repeating year 1979). It is used as initial condition of the published simulation.