Validation of regional climate model ALADIN-CLIM-CZ

Regional climate model ALADIN-CLIM-CZ operated by Czech Hydrometeorological Institute has been upgraded to the convection permitting resolution of 2.3 km together with the implementation of the non-hydrostatic, fully elastic dynamical core. This study deals with the validation of the reanalysis using the ALADIN-CLIM-CZ model in the area of Europe with a focus on the area of Central Europe. The main motivation for this validation is to evaluate the quality of the model in connection with its planned use for forecasting the future climate in Central Europe and especially in the territory of the Czech Republic.

Due to the goal of validation, the study presents standard climate statistics for months and quarters such as long-term means and mean annual cycles and compares them with measurements at selected stations. We validated the following predicted quantities: precipitation amount and number of wet days, mean, minimum and maximum temperature at 2 m above surface, relative humidity at 2 m above surface, wind speed at 10 m above surface and global radiation at the surface.