Klimaaenderung und Unterweserregion (KLIMU) 'Fallstudie Weseraestuar'. Teilprojekt: Hydrographisch-oekologische Simulation des Systems Unterweser fuer verschiedene Klimaszenarien (Unterweser-Simulation) Abschlussbericht

The interdisciplinary project 'Climate Change and Lower Weser Region (KLIMU)' aimed at the impact assessment of a presumed climate change and the potential socio-economic and coastal protection responses on the Lower Weser region and provided a basic approach for decision making regarding water management, environmental policies, socio-economy and precautionary planning. In the above mentioned part of the project the impact of the scenarios on hydrography and water quality of the inner Weser estuary was estimated considering the estuary's utilization. In the climate scenario the given rise in water level at the seaward boundary (about 10 km down stream of Bremerhaven, high water +70 cm, low water +40 cm) propagated upstream only with slight deviations. These changes would require coastal protection measures and would have negative impact on the drainage of the marshes. Problems with marsh irrigation could arise from the small upstream displacement of the brackish water zone. The increase in eulittoral was assessed to be ecological positive. The increase in temperature of about 3 C and the hydrodynamical changes affected the strength of the nutrient maxima and the oxygen minimum. The estuary's utilization as a receiving body for waste heat could have to be further restricted. (orig.)SIGLEAvailable from TIB Hannover: F02B918 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung und Forschung (BMBF), Bonn (Germany); DLR Deutsches Zentrum fuer Luft- und Raumfahrt e.V., Bonn (Germany)DEGerman