Regionalization concept for the prediction of large-scale water fluxes

A combined model and regionalization concept is presented which enables the user to simulate water fluxes at a wide range of scales (from sites to regions) without changing the model concept, The necessary aggregation is achieved by defining hydrologically similar areas. The similarity of the hydropedotopes is defined by a cluster analysis of simulation results (e.g. monthly values of actual evapotranspiration, groundwater recharge, surface runoff and interflow). The results of an application of this concept are presented, Water fluxes from a 1000 km(2) sized catchment were calculated using scale dependent information density.