Representation and Annual to Decadal Predictability of Euro‐Atlantic Weather Regimes in the CMIP6 Version of the EC‐Earth Coupled Climate Model

Abstract Weather regimes are large‐scale atmospheric circulation states that frequently occur in the climate system with persistence and recurrence, associated occurrence of specific local weather conditions. This study evaluates representation four Euro‐Atlantic uninitialized historical forcing simulations initialized decadal predictions performed EC‐Earth3 coupled model. The positive negative phases North Atlantic Oscillation (NAO+ NAO−, respectively), Blocking, Ridge winter; Ridge, Low summer. We also analyze impact model initialization toward observed state has on ability to predict variability regimes' seasonal frequency occurrence. find correctly reproduces spatial patterns climatological frequencies regimes. By contrast, skill predicting inter‐annual variations is generally low, does not significantly improve such skill. teleconnections between sea surface temperatures reproduced by model, which could be a reason for low temporal regime frequencies.