Description

While climate information from General Circulation Models (GCMS) are usally too too coarse for climate impact models or decision makers from various discriminations (e.g, Hydrology, agriculture), Regional Climate Models (RCMs) and Regional Earth System Models (RESMs) provide feasible solutions for Downscaling GCM output to Finer spatiotemporal scales. However, it is well known that the model performance depended on the choice of the physical parameterisation schemes, but optimally configurations may be vary from region to region. Besides land-surface processes, the most crucial processes to be parameterised in ESMS include radiation (RA), Cumulus convection (CU), cloud microphysics (MP), and planetary bound layer (PBL), partly with complex interactions. Before conducting long-term climate simulations, it is therefore indispensable to identify a proper combination of physics parameterisation schemes for these processes. Using the European Centre for Medium-Range Weather Forecasts (ECMWF) reanalysis product ERA-Interim as lateral bound conditions, we derived an ensemble of 16 physics parameterisation runs for a larger domain in Northern sub-Saharan Africa (NSSA), northwards of the Equator, using two different CU-, mp-, PBL-, and RA schemes, respectively, using the resolution of ther Research and recasting 3.9. Conclusions about appropriate physical parameterisation schemes may be vary within the study area. WE therefore want to stimulate the development of own performance evaluation studies for climate simulations or subsequent impact studies over specific (sub-) regions in NSSA. For this reason, selected climate surface variables of the physics ensemble (i.e. the 16 experiments from 2006-2010) are provided. For more information about the setup of the experiments, please see: Laux et al., 2021: A high-resolution regional climate model physics ensemble for Northern sub-Saharan Africa. Frontiers in Earth Science (under revision).

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