High-resolution climate predictions and short-range forecasts to improve the process understanding and the representation of land-surface interactions in the WRF model in Southwest Germany

Climate Research

Universität Hohenheim
Institut für Physik und Meteorologie

This project investigates the results of regional climate simulations (historical since 1960, projections until 2100) with the Weather Research and Forecast (WRF) model at 12 km and convection permitting scale. The objectives are to provide high resolution climatological data to the scientific community and to support the quality assessment and interpretation of the regional climate projections for Europe through the contribution to the climate model ensemble for Europe (EURO-CORDEX) for the Intergovernmental Panel on Climate Change. Special attention is paid to the soil-vegetation-atmosphere feedback processes, namely the development of the atmospheric boundary layer. The main objectives of the convection permitting simulations of WRFCLIM are to gain an improved spatial distribution and diurnal cycle of precipitation through a better simulation of land-surface-atmosphere feedback processes and a more realistic representation of orography. This supports the interpretation of the data for local applications e.g. in hydrological and agricultural management. The WRFCLIM simulations are part of the scientific BMBF funded ReKliEs-De project. ReKliEs-De (Regionale Klimaprojektionen Ensemble für Deutschland) is a national coordinated effort to enlarge the model ensemble within EURO-CORDEX and to evaluate the latest generation of climate projections based on the RCPs for new emission scenarios for the 21st century in Germany.