Using the Multiactor-Approach in G lowa-Danube to Simulate Decisions for the Water Supply Sector Under Conditions of Global Climate Change

Roland Barthel (), Stephan Janisch (), Darla Nickel (), Aleksandar Trifkovic and Thomas Hörhan

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2010, vol. 24, issue 2, 239-275

Abstract: G lowa-Danube ( www.glowa-danube.de ) is an interdisciplinary project that aims to develop integrated strategies and tools for water and land use management in the upper Danube catchment (Germany, Austria ∼77,000 km 2 ). The project is one of five within the G lowa research program ( www.glowa.org ) dealing with Global Change effects on the water cycle in six meso-scale catchments (up to 100,000 km 2 ) in Central Europe, West Africa and the Middle East. In the G lowa-Danube project, 16 natural science and socio-economic simulation models are integrated in the coupled simulation system D anubia. This article describes the underlying concept and implementation of WaterSupply, a multiactor-based model of the water supply sector with a focus on water resource utilization and distribution of individual water supply companies. Within D anubia, WaterSupply represents the link between water supply and demand, where the former is simulated by a groundwater and a surface water model and the latter by water consumption models of four different sectors (domestic, industrial, agricultural and tourism). WaterSupply interprets the quantitative state of water resources for defined spatial and temporal units according to sustainability requirements and assesses the state of resources in relation to present water supply schemes and the dynamics of user demand. WaterSupply then seeks both to optimize the resource use of supply companies and to identify critical regions for which further adaptation of the water supply scheme will become necessary under changing climatic conditions. In this article, a brief description of the G lowa-Danube project and the integrated simulation system D anubia is followed by a short presentation of the D eepA ctor framework, which provides a common conceptual and technical basis for the socio-economic simulation models of G lowa-Danube. The main body of the article is devoted to the concept, the implementation and simulation results of WaterSupply. Results from different scenario calculations demonstrate the capabilities and the potential fields of application of the model. Copyright Springer Science+Business Media B.V. 2010

Keywords: Multi-actor approach; WaterSupply model; Global change; D anubia; Danube; Integrated water resources management (search for similar items in EconPapers)
Date: 2010
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DOI: 10.1007/s11269-009-9445-y

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