Regional hydrological impacts of climate change-hydroclimatic variability

The regional response of hydrological regimes to global climate change and variability is investigated. In North America and Europe, it is demonstrated that changes in vegetation canopy does not significantly impact the response, and that calibrated models always outperformed the model simulation. In Africa, the GRJ4 rainfall-runoff model with a variety of rainfall scenarios was utilized to evaluate the impact of climate variability and change on the hydrological response of the Upper Quémé River, Benin. It is clear that many areas of the world face major challenges in providing adequate water supply in the face of both natural and unnatural hydrological variability.