Chong-Yu Xu is a Professor at the Department of Geosciences, University of Oslo, Norway. He was an Associate Professor of Hydrology at the Department of Earth Sciences, Uppsala University. He was an Assistant Engineer at The Ministry of Water Resources, China. He received a Ph.D. and M.S. at the Free University Brussels, Brussels, Belgium. He obtained a B.S. at the Nanjing University, China. He completed his postdoctoral work at Vrije Universiteit Brussel. He won the Lifetime Achievement Award 2022 from the Nordic Association for Hydrology (NHF) and the Outstanding Contribution Award from Advances in Climate Change Research (ACCR). He is a Fellow of The Norwegian Academy of Science and Letters (DNVA). He is an Honorable professor at Hohai University, China and Beijing Normal University, China.