The Coordinated Regional climate Downscaling EXperiment (CORDEX) is a World Climate Research Program (WCRP) initiative that supports research and exchange on regional climate modeling based on a common and unified set of protocols. By establishing an Arab Domain under CORDEX alongside other regional domains, public and private researchers can pursue regional climate modelling based on a uniform set of limiting boundary conditions and a common set of assumptions that allows for inter-comparison and exchange on climate change projections conducted at the Arab regional level. This effort is led by SMHI in consultation with other Regional Initiative partners.