Climate Change Projection and Numerical Climate Modeling in the Rheris Watershed (Region Draa Tafilalet—Morocco)

Climate changeClimate change is a widely recognized reality today in the scientific community. During the three decades, scientific researchers in MoroccoMorocco spoke of climate variabilityClimate variability, since the Rio Summit in 1992, we speak rather of climate changeClimate change. This subject, of a transversal nature, interests many actors, coming from several climatological, economic, political, sociological fields, … Each discipline has its own visions, objectives, means, problems etc. … In the context of climate changeClimate change, the Moroccan climate is characterized by a strong spatial and temporal irregularity. The Rheris basin is located in the South-East of MoroccoMorocco, it covers an area of 12,702 km2, it is characterized by a semi-arid climate. At the level of the watershed of the wadi Rheris, this climatic irregularity favors the occurrence of hydrological extremes (floods and floods), these hydrological risksHydrological risks have constituted in recent years a major risk in our study area. This scientific contribution has allowed us to focus on the recent, current and future climate of the Rheris watershedRheris watershed, based on optimistic and pessimistic scenarios of GEIEC to make the projection of future climate scenarios of the Rheris watershed and its impactImpacts on the occurrence of floods, which cause each time material damage and sometimes human losses.