Comparison between CMIP5 and CMIP6 Models over MENA Region Using Historical Simulations and Future Projections

The study evaluated the ability of 11 global climate models latest two versions Coupled Model Intercomparison Project (CMIP5 and CMIP6) to simulate observed (1965–2005) rainfall, maximum (Tmax) minimum (Tmin) temperatures, mean eastward (uas) northward (vas) wind speed, surface pressure. It also relative uncertainty in projections variables using those CMIPs. European reanalysis (ERA5) data were used as reference evaluate performance GCMs their median multimodel ensembles (MME). revealed less bias CMIP6 than CMIP5 simulating most variables. biases Tmax, Tmin, uas, vas, pressure ?55 mm, 0.28 °C, ?0.11 ?0.25 m/s, ?0.06 ?0.038 Kpa for compared ?65 0.07 ?0.87 ?0.41 ?0.05 0.063 CMIP5. speed was more narrow showed a higher increase Tmin Tmax by 0.64 especially central region. Besides, rainfall parts MENA would increase; however, it might decrease 50 mm coastal regions. better wide range climatic studies.