GAMAR climate projection 2030-2050 (WP3 RiOMAR)

Funded by the Priority Research Programme “Ocean & Climate”, the RiOMar project is studying how the coastal environment is changing under the influence of rivers in the 21st century. It is focusing on five coastal zones in metropolitan France: the English Channel–Seine, Southern Brittany–Loire, Pertuis–Charente, Bay of Biscay–Gironde, and the Gulf of Lion–Rhône. The project aims to answer two important questions: what will happen to vulnerable ocean environments at river mouths due to human activity and climate pressures in the 21^(st) century, and how can we work with environmental managers to improve the condition and functioning of ecosystems using science.

CROCO climate hydrodynamic hindcast

• Domain : 43.3°N - 50.9°N / 8°W - 1.7°E
• Horizontal resolution : 1km
• Grid size : 727 x 838 x 40
• Vertical coordinates : Generalized sigma coordinates
• Simulated period : 2030-2050
• Rivers : 23
• River runoff data : Runoffs from CNRM-RCSM6 (scenario SSP5-8.5) coupled model debiased regards with real observations
• Tidal forcing : FES2014 - Lyard et al., 2021
• Open Boundary conditions (West and North) : CROCO MANGA simulation (2.5km) from PPR MEDIATION project forced by CNRM-RSCM6 simulation (scenario SSP5-8.5)
• Atmospheric forcings : CNRM-RCSM6 coupled model (scenario SSP5-8.5)
• Initial condition : CROCO MANGA simulation (2.5km) from PPR MEDIATION project forced by CNRM-RSCM6 simulation (scenario SSP5-8.5)

This work was supported by the PPR-RiOMar project, a French government grant managed by the Agence Nationale de la Recherche under the France 2030 program, reference ANR 22 POCE 0006.