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Institut für Wasser- und Umweltsystemmodellierung - IWS



"Integrated modelling of global change effects on the water cycle in the upper Danube catchment (Germany) - the groundwater management perspective"

The GLOWA program addresses the manifold consequences of Global Change on regional water resources in a variety of medium sized watersheds. The Upper Danube Basin (Germany, Austria; of about 77.000 km²) represents a mountain foreland situation in the temperate mid-latitudes. The major goal of “GLOWA-Danube” is the development of new water resource management modelling technologies, integrating both natural and socio-economic sciences. GLOWA-Danube relies on the Decision Support System (DSS) DANUBIA, a coupled system that is based on currently 16 individual sub-models which are developed by 11 different research groups from different disciplines at different locations (mainly German Universities). Each model runs on a different computer and exchanges data with partner models using the common DANUBIA architecture and Internet protocols. DANUBIA and its sub-components are object-oriented, spatially distributed and raster-based and have been developed using the Unified Modelling Language (UML) and JAVA. This paper describes the framework of GLOWA-Danube and the integrated model DANUBIA with a focus on two models developed by the Universitaet Stuttgart. These two sub-models ‘Groundwater’ and ‘WaterSupply’ form together the Groundwater Management complex of DANUBIA which are described in this paper.