Climate change alters the global atmospheric circulation, which in turn alters precipitation and evaporation in large parts of the world and, in consequence, the amount of river water that can be used locally. So far, projections of climate impact on stream flow have usually been calculated on the basis of physical models, e.g., the projections reported by IPCC (Intergovernmental Panel on Climate Change).
Click here for original story, Water crises due to climate change: More severe than previously thought
Source: Phys.org