Quantifying the impact of land use changes on the water balance of large catchments using the J2000 model
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Abstract In this paper the J2000, a new modelling system for the distributed simulation of the water balance in large river basins, will be introduced and described briefly. The introduction comprises an overview of the model's purpose and concept, the simulated hydrological processes, the distribution concept for the spatial subdivision of the catchment as well as the methods for regionalisation of climate data from point sources. As an example for the model's capabilities simulation results of a large catchment in Germany are shown. The model description is complemented by the presentation of results of two land use change scenarios to prove the model's ability to be used for the spatial quantification of the impact of land use changes on the water balance.
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