CMIP5 and CMIP6 Model Projection Comparison for Hydrological Impacts Over North America

A warmer climate impacts streamflows and these changes need to be quantified assess future risk, vulnerability, implement efficient adaptation measures. The simulations from the fifth phase of Coupled Model Intercomparison Project (CMIP5), which have been basis most such assessments over past decade, are being gradually superseded by more recent Phase 6 (CMIP6). Our study portrays added value CMIP6 ensemble CMIP5 in a first North America wide comparison using 3,107 catchments. Results show reduced spread compared for temperature precipitation projections. In terms flow indicators, driven hydrological projections result smaller mean high values, except mountainous areas. Overall, we that provides narrower band uncertainty projections, bringing confidence impact studies.