Werner Aeschbach¹, Viola Rädle¹, David Wachs¹, Arne Kersting¹, Yannis Arck¹, Maximilian Schmidt², Thomas H Mueller³, Zhongyi Feng², Lisa Ringena², Julian Robertz² and Markus Oberthaler², (1)Heidelberg University, Institute of Environmental Physics, Heidelberg, Germany, (2)Heidelberg University, Kirchhoff-Institute for Physics, Heidelberg, Germany, (3)Helmholtz Centre for Environmental Research - UFZ, Hydrogeology, Leipzig, Germany