Josias Láng-Ritter is a Postdoctoral Researcher in the Department of Built Environment at Aalto University. He holds a PhD in Environmental Engineering from Universitat Politècnica de Catalunya awarded in 2021, a Master's degree from the Institute for Water Education awarded in 2016, and a Bachelor's degree from Technische Universität München awarded in 2014. His research focuses on the interactions between the hydrological cycle and socio-economic factors, with particular emphasis on adapting societies to hydrometeorological extremes in a changing world and identifying compromises among sectors involved in water resources management.
Láng-Ritter's work spans socio-hydrology, flood risk management, GIS applications, water diplomacy, and artificial intelligence. He has contributed to publications including the 2025 paper 'Global gridded population datasets systematically underrepresent rural population' in Nature Communications, 'Bridging gaps, saving lives: Integrating communities’ voices and impact mapping into flood early warning systems in rural Nepal' in the International Journal of Disaster Risk Reduction (2025), and 'Compound flood impact forecasting: integrating fluvial and flash flood impact assessments into a unified system' in Hydrology and Earth System Sciences (2022). He received the Allianz Climate Risk Research Award (first prize) in 2018 and shared in the Best Student Paper Award in 2025. Láng-Ritter is affiliated with the Water and Development Research Group and GIScience for Sustainability Transitions Lab at Aalto University.