Reza Soltanian, University of Cincinnati Main Campus, Department of Geosciences, Cincinnati, United States, Farzad Moeini, University of Cincinnati, Geosciences, Cincinnati, United States, Zhenxue Dai, Jilin University, College of Construction Engineering, Changchun, China, Audrey H Sawyer, The Ohio State University, School of Earth Sciences, Columbus, United States, Jan H Fleckenstein, UFZ, Leipzig, Germany, Zachary Curtis, Hydrosimulatics Inc., Lansing, United States, Abhijit Chaudhuri, Indian Institute of Technology Madras, Department of Applied Mechanics, Chennai, India, John Doherty, Watermark Numerical Computing, Brisbane, Australia, Gabriele Chiogna, Friedrich-Alexander-Universität Erlangen-Nürnberg, GeoZentrum NordBayern, Erlangen, Germany, Marwan Fahs, ITES, University of Strasbourg, Strasbourg, France, Weon Shik Han, UW-Milwaukee, Milwaukee, United States, Hee Sun Moon, KIGAM Korea Institute of Geoscience and Mineral Resources, Groundwater Environment Research Center, Daejeon, South Korea, Lin Zhu, Capital Normal University, Beijing, China, Zaina Hussein Mseli, University of Dodoma, Dodoma, Tanzania, Chuanjun Zhan, Jilin University, Changchun, China, Francesca Lotti, SYMPLE S.R.L, Vetralla Viterbo, Italy, Hussein Hoteit, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia, Mir A Matin, United Nations University, Institute for Water, Environment and Health (UNU-INWEH), Ontario, ON, Canada, Azin Zarei, United Nations University, Institute for Integrated Management of Material Fluxes and of Resources, Dresden, Germany, Dema Al-Masri, Hamad Bin Khalifa University, Duha, Qatar, Kenneth C Carroll, New Mexico State University, Department of Plant and Environmental Sciences, Las Cruces, United States, Sarah G. Evans, Appalachian State University, Department of Geological and Environmental Sciences, Boone, NC, United States, Roelof J Versteeg, Subsurface Insights, Hanover, NH, United States and Kaveh Madani, United Nations University, Institute for Water, Environment and Health (UNU-INWEH), Richmond Hill, ON, Canada