Author(s): Martin Schrön, Helmholtz Centre for Environmental Research UFZ Leipzig (First Author, Presenting Author) Lasse Hertle, Helmholtz Centre for Environmental Research UFZ Leipzig Daniel Rasche, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Hydrology Francesco Riggi, INFN Sezione di Catania Ombretta Pinazza, CERN European Organization for Nuclear Research Fraser Baird, University of Surrey Bernd Heber, University of Kiel Michael Walter, DESY Deutsches Elektronen Synchrotron David McJannet, CSIRO Land and Water Peter Dietrich, Helmholtz Centre for Environmental Research UFZ Leipzig Steffen Zacharias, Helmholtz Centre for Environmental Research UFZ Leipzig