15 Groundwater and Climate Change (co-organized by IAH-D)

Chair: Johannes Barth, Steffen Bender, Markus Groth

Saturday, 09:30-10:30, 1

Impacts of climate change have a high potential to influence all parts of the hydrological cycle. Annual mean temperatures are likely to increase. The decrease in frost days leads to an increase in growing season length. The annual number of precipitation days and extremes of daily precipitation are very likely to increase on a regional and local scale. In summary, all these factors will influence the annual cycle of groundwater recharge. Other potential impacts on groundwater are associated with changes of sea level and ice cover. From the water management perspective such changes imply new challenges particularly for water supply based on water from springs or from shallow aquifers. This may in turn have implications for long-term water pumping measures. Strategies and single measures of climate-adapted groundwater management can include technical, planning and institutional actions as well as monetary incentives and introducing new legal and financial framework conditions. In this session the following questions will be addressed: 1) Climate change impacts: To which extent are they already visible in groundwater? How do they differ in different regions of the world? 2) Groundwater levels: Which dynamics can be expected in the future? 3) Groundwater recharge rates: Are existing methods to estimate groundwater recharge rates still valid in the future? 4) Coastal aquifers: Which impact has sea-level rise on salt water intrusions and management strategies are possible for adaptation? 5) Pumping measures in the "Ruhrgebiet" and other areas worldwide: Are existing actions adequately dimensioned in order to avoid groundwater flooding? 6) Which adaptation measures and strategies are already available and which are currently under discussion?

 Saturday:
24.03.2018
09:30O 15.1: Björn Panteleit et al.: Das Bremerhavener Grundwasser im Klimawandel – ein FREEWAT Fallbeispiel
09:45O 15.2: Tobias Schlinsog et al.: Simulation möglicher Auswirkungen von Klimaänderungen auf die Grundwasserneubildung in Niedersachsen
10:00O 15.3: Michaela Pohle et al.: Interreg V A – Projekt ResiBil, Ressourcenbilanzierung des Grundwassers aus kreidezeitlichen Sandsteinsedimenten für die sächsische und tschechische Trinkwasserversorgung vor dem Hintergrund des Klimawandels
10:15O 15.4: Benz Susanne A. et al.: Regionale und langzeitliche Trends von Grundwassertemperaturen
10:30Coffee break
11:00

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Poster

P 15.2 Eva González, Nico Deus, Jörg Elbracht, Mohammad Azizur Rahman, Helga Wiederhold, Bernhard Siemon
TOPSOIL - Grundwasserversalzung in der Elbe-Weser-Region
P 15.4 Christian Moeck, Jana von Freyberg, Mario Schirmer
Vorhersagen der Grundwasserneubildung in gegensätzlichen Klima: Der Effekt von Modelvereinfachungen und Kalibration auf simulierte Grundwasserneubildungsraten

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