Robust projections and predictions of climate variability and change, particularly at regional scales, rely on an accurate representation of driving processes in model simulations. A new international effort to further develop the Coupled Model Intercomparison Project (CMIP), involving CMCC researcher Enrico Scoccimarro, improves how we simulate and understand extreme weather events and their relationship to the climate system, making climate models more detailed and useful for decision makers and placing CMCC at the forefront of global efforts in climate modelling.