Extreme events representation in CMCC-CM2 standard and high-resolution general circulation models

Abstract. The recent advancements in climate modeling partially build on the improvement of horizontal resolution different components simulating system. A higher is expected to provide a better representation variability, and this work we are particularly interested potential improvements representing extreme events high temperature precipitation. two versions Centro Euro-Mediterraneo sui Cambiamenti Climatici (CMCC-CM2) model used here adopt highest resolutions available within last family global coupled models developed at CMCC participate Coupled Model Intercomparison Projects, Phase 6 (CMIP6) effort. main aim study document ability CMCC-CM2 represent spatial distribution precipitation, under historical period, comparing results observations, European Centre for Medium-Range Weather Forecasts (ECMWF) reanalysis (ERA5), multi-source weighted-ensemble precipitation (MSWEP) Climate Hazards Group infrared with station data (CHIRPS) observations. For more detailed evaluation use both 6-hourly daily time series, compute indices representative intense conditions. In terms mean climate, able realistically reproduce patterns version (1/4∘ resolution) atmospheric provides than standard one (1°), not only means but also defined frequencies. This case average On other hand improved by adoption resolution.