Print Email Facebook Twitter Twenty-three unsolved problems in hydrology (UPH)–a community perspective Title Twenty-three unsolved problems in hydrology (UPH)–a community perspective Author Blöschl, Günter (Technische Universität Wien) Bierkens, Marc F.P. (Universiteit Utrecht) Savenije, Hubert (TU Delft Water Resources) Bogaard, T.A. (TU Delft Water Resources) Hrachowitz, M. (TU Delft Water Resources) Kolechkina, A.G. (TU Delft Water Resources) Pande, S. (TU Delft Water Resources) van der Ent, R.J. (TU Delft Water Resources; Universiteit Utrecht) van Nooijen, R.R.P. (TU Delft Water Resources) Date 2019 Abstract This paper is the outcome of a community initiative to identify major unsolved scientific problems in hydrology motivated by a need for stronger harmonisation of research efforts. The procedure involved a public consultation through online media, followed by two workshops through which a large number of potential science questions were collated, prioritised, and synthesised. In spite of the diversity of the participants (230 scientists in total), the process revealed much about community priorities and the state of our science: a preference for continuity in research questions rather than radical departures or redirections from past and current work. Questions remain focused on the process-based understanding of hydrological variability and causality at all space and time scales. Increased attention to environmental change drives a new emphasis on understanding how change propagates across interfaces within the hydrological system and across disciplinary boundaries. In particular, the expansion of the human footprint raises a new set of questions related to human interactions with nature and water cycle feedbacks in the context of complex water management problems. We hope that this reflection and synthesis of the 23 unsolved problems in hydrology will help guide research efforts for some years to come. Subject hydrologyinterdisciplinaryknowledge gapsresearch agendascience questions To reference this document use: http://resolver.tudelft.nl/uuid:40bbfd06-0957-4fe4-9276-2a4de0885c95 DOI https://doi.org/10.1080/02626667.2019.1620507 ISSN 0262-6667 Source Hydrological Sciences Journal, 64 (10), 1141-1158 Part of collection Institutional Repository Document type journal article Rights © 2019 Günter Blöschl, Marc F.P. Bierkens, Hubert Savenije, T.A. Bogaard, M. Hrachowitz, A.G. Kolechkina, S. Pande, R.J. van der Ent, R.R.P. van Nooijen, More Authors Files PDF Twenty_three_unsolved_pro ... ective.pdf 2.36 MB Close viewer /islandora/object/uuid:40bbfd06-0957-4fe4-9276-2a4de0885c95/datastream/OBJ/view