Projected impacts of climate change on groundwater and stormflow in a humid, tropical catchment in the Ugandan Upper Nile Basin

Abstract

General comments The paper addresses climate change impact on water resources in the Upper Nile Basin. SWAT model is used for hydrological response simulations, while 7 climate models are considered for climate projection. Climate sensitivity is tested investigated using UKMO HadCM3 for different temperature increase scenarios, showing significant flow anomaly for global temperature increase above 2C . Also, it is shown that projected flow regime changes are highly dependent on projected differences in precipitation between GCMs, and are less sensitive to hydrological model parameter uncertainty.