1. Groundwater and Soil Science Department, Federal Institute for Geosciences and Natural Resources (BGR); Hannover Germany
2. Institute of Fluid Mechanics and Environmental Physics in Civil Engineering; Leibniz Universität Hannover; Hannover Germany
3. Department of Environmental Informatics; Helmholtz-Centre for Environmental Research (UFZ); Leipzig Germany
4. Institute for Groundwater Management, Technische Universität Dresden; Dresden Germany