Assessment of the spatio-temporal variability of the added value on precipitation of convection-permitting simulation over the Iberian Peninsula using the RegIPSL regional earth system model

In this study, we have assessed the added value on spatio-temporal distribution of precipitation convection-permitting simulation (3 km) compared to parent coarse-scale parameterized convection (20 with high-resolution observational datasets i.e., SPREAD (5 and IBERIA01 (10 over Iberian Peninsula (IP) in all four seasons during 2000–2009. Both simulations are evaluation runs based ERA-Interim reanalysis performed RegIPSL regional earth system model frame European Climate Prediction (EUCP) H2020 project COordinated Regional climate Downscaling Experiment (CORDEX). We not found significant improvement for seasonal mean IP except spatial variation mountainous peaks. The kilometer-scale significantly underestimates observed western parts simulation, which may be attributed a change local dynamics weakening southward shift moisture-laden westerly winds approaching from Atlantic Ocean (i.e., decline atmospheric moisture transport towards IP). However, driving is obtained various indices; representation wet-day frequency intensity, extreme/heavy events each season at both resolutions downscaled upscaled. It has also been noted that metrics used varies between two seasons.