Rainfall Projections from Coupled Model Intercomparison Project Phase 6 in the Volta River Basin: Implications on Achieving Sustainable Development

Climate change has become a global issue, not only because it affects the intensity and frequency of rainfall but also impacts economic development regions whose economies heavily rely on rainfall, such as West African region. Hence, need for this study, which is aimed at understanding how may in future over Sahel, Savannah, coastal zones Volta River Basin (VRB). The trends changes between 2021–2050 1985–2014 under Shared Socioeconomic Pathway (SSP2-4.5 SSP5-8.5) scenarios were analyzed after evaluating performance three climate models from Coupled Model Intercomparison Project Phase 6 (CMIP6) using Hazards Group InfraRed Precipitation with Station data (CHIRPS) observation. results show, general, relatively high correlation low spatial biases (r > 0.91, −20% < Pbias 20%) entire models’ ensemble mean. An increasing trend projected increase annual SSP2-4.5 scenario 6.0% (Sahel), 7.3% (Savannah), 2.6% (VRB), decrease 1.1% zone. Similarly, SSP5-8.5, to by 32.5% +22.8% 23.0% (coastal), 24.9% being more pronounced SSP5-8.5 compared scenario. findings study would be useful planning designing adaptation measures achieve sustainable VRB.