The task to develop techniques to measure integrated fluxes and storages at useful scales is - as Beven (2006) puts it - the most important problem in hydrology of the 21st century followed by the search for appropriate closure schemes. Reviews of applied exploration and modeling in hydrology point out that interlinked scales, heterogeneity and patterns, non-stationary processes and the continuous propagation of the Freeze and Harlan blueprint are key restrictions for advancing the understanding of the water-cycle.
The project focuses on a) appropriate discretization of a representative hydrological unit being large enough to be ergodic yet distinguishing functional ensembles; b) definition and setup of adequate nested exploration/observation networks for geophysics and hydrology; c) derivation of closure relations through improvement/extension of existing concepts if necessary. How much variability is needed to describe a) differences between catchment compartments AND b) effective homogeneous elements within these? What are appropriate observations methods for that purpose? Are there easy to assess parameters and signatures? Can we find transferable assessment and modeling strategies at least at least for similar landscapes?