Assessment of the water and energy budget in a peatland catchment of the Alps using the process based GEOtop hydrological model

•Application of a hydrological model to replicate the water and energy fluxes of an alpine peatland.•Spatial heterogeneity of the vegetation and soil introduce biases into the model.•The model, GEOtop, is able to track the seasonal trends over four years.•GEOtop gets the interannual variability of water and energy fluxes over four years.