 Climate change is expected to alter the hydrological cycle, leading to large-scale impacts on water availability. However, these impacts are highly uncertain due to the different assumptions made by climate and hydrology models. To address this issue, researchers have developed an ensemble of eight climate and three hydrology models to better understand the potential effects of climate change on water resources. These models were then statistically corrected to account for any biases they may contain. The results showed that while some regions will experience an increase in available water resources, others will see a decrease. Additionally, certain regions, such as Central and Southern Europe, the Middle East, the Mississippi River Basin, Southern Africa, Southern China, and Southeastern Australia, are likely to experience more severe decreases in available water resources. This article was authored by S. Hageman, C. Chen, D. B. Clark and others.