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Evaluation of the precipitation for South-western Germany high resolution simulations with regional climate models

MPG-Autoren
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Jacob,  D.
The Atmosphere in the Earth System, MPI for Meteorology, Max Planck Society;
B 5 - Urban Systems - Test Bed Hamburg, Research Area B: Climate Manifestations and Impacts, The CliSAP Cluster of Excellence, External Organizations;

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Lorenz,  P.
The Atmosphere in the Earth System, MPI for Meteorology, Max Planck Society;

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Zitation

Feldmann, H., Früh, B., Schädler, G., Panitz, H.-J., Keuler, K., Jacob, D., et al. (2008). Evaluation of the precipitation for South-western Germany high resolution simulations with regional climate models. Meteorologische Zeitschrift, 17, 455-465. doi:10.1127/0941-2948/2008/0295.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0011-F97B-A
Zusammenfassung
Precipitation data from long-term high-resolution simulations with two regional climate models (CLM and REMO) are evaluated using a climatology based on observations for south-western Germany. Both models are driven by a present day climate forcing scenario from the global climate model ECHAM5. The climatological evaluation shows a strong seasonal dependence of the model deficiencies. In spring and summer there are relatively small differences between simulation results and observations. But during winter both the regional models and ECHAM5 strongly overestimate the precipitation. The frequency distributions of the model results agree well with observed data. An overestimation of the precipitation at the upwind sides of mountainous areas occurs in the regional simulations. We found that the coupling of the regional models to the driving model is stronger in winter than in summer. Therefore, in winter the large scale model have a larger impact on the performance of the regional simulations. During summer the benefit of regional climate simulations is higher.