Dr. Tallaksen is Professor in Hydrology at the Department of Geosciences, University of Oslo, Norway. Tallaksen has been active within drought related international activities for 30 years. She is one of the coordinators and initiators of the European Drought Centre (EDC) - established in 2004, active member of the UNESCO-IHP FRIEND-Water programme (coordinator of the Northern European low flow and drought group from 1997 – 2006), on the Open Panels of CHy Experts OPACHE (World Meteorological Organisation: Floods and Droughts), contributing author of the Handbook on Low Flows (WMO), and National expert for the fifth and sixth IPCC reports. She has been on the review panels of several scientific boards for appointments and PhD evaluations and acted as reviewer for numerous scientific journals. In 2014 she was awarded the EGU Leonardo lecture for excellent Scientific Merits in Hydrology; granted in recognition of an outstanding contribution to low flow and drought hydrology. Dr Van Lanen is an Associate Professor of Hydrology & Quantitative Water Management (Wageningen University, The Netherlands). For more than 2 decades, he has been actively involved in several drought-related international activities. He (co-)authored over 50 papers in peer-reviewed international journals, he was (co)-editor of 8 scientific books on drought, water scarcity and regional flow regimes. He wrote two XEROCHORE Science Policy Briefs and as project coordinator he was strongly involved in Drought Science-Policy Interfacing at different scales (from river basin to pan-Europe). Dr. Van Lanen presented over 30 keynotes on Drought and Water Scarcity in all continents of the world. He has supervised over 100 MSc and PhD students of Hydrology and Hydrogeology, mainly investigating drought in different parts of the world. He convened and lectured at several international summer schools on drought and water scarcity in Europe, Africa and Asia.