Dr. Johannes Cullmann
Johannes Cullmann is a German water scientist. He has worked for German universities and holds a PhD and a Habilitation in hydrology. His early career was focused on hydrological modelling and flood forecasting. Later he was responsible for international water cooperation for the German Federal Institute for Hydrology. He has supported various international commissions for transboundary water cooperation and presided UNESCO´s water program from 2012 to 2014. From 2015 to 2022, Johannes served as a senior director for water and climate in the World Meteorological Organization. He was the chief Scientist of the President of the UN General Assembly in 2022 and 2023. At present Johannes works for both the German Water Administration and the Institute for Water Education in Delft, the Netherlands.