DecReg is a joint project including the Institute for Meteorology and Climate Research of the Karlsruhe Institute of Technology (KIT), the Institute for Physics of the Atmosphere of the University of Mainz, the Institute for Atmosphere and Environment of the Goethe University Frankfurt/Main and the German Weather Service (DWD). It is coordinated by the Institute for Meteorology and Climate Research of KIT.
DecReg (Regional Decadal Predictability, C-18 in Module C of MiKlip) aims to assess the feasibility, the added value and the uncertainty range of decadal regional climate forecasts as well as the spatial and temporal variation of the predictive potential. For that purpose, predictive decadal hindcasts (1-10 years) for Europe are generated in high resolution with a regional climate model (here CCLM) using global model predictions (mainly ECHAM6) for the past decades. The ensemble results are used to derive statistics for comparison with observations and to estimate uncertainty ranges. The ensembles are mainly generated using different model setups and initialisations, as well as different ways to feed in the driving data. It is expected that high resolution together with ensemble simulations will make it possible to reliably capture the statistics of extremes, like heavy precipitation and droughts. Other results will include time series of precipitation, temperature and wind which can be used for impact studies. Coordination and cooperation with the projects LACEPS, Regio_Predict and REDCLIP as well as with Module E is intended.
The contributions of the partners are as follows: University of Mainz: coupling between global and regional model; DWD and University of Frankfurt: provision of quality assessed gridded observation data; University of Frankfurt and KIT: impact of land surfaces, regional ensemble generation and analysis; KIT: project coordination.
This description regards the project during the first phase of MiKlip. The research within DecReg continues in MiKlip II Module C.
Institut für Meteorologie und Klimaforschung, Karlsruher Institut für Technologie (KIT)
Dr. Gerd Schädler
Prof. Dr. Christoph Kottmeier
Institut für Physik der Atmosphäre, Universität Mainz
Dr. Astrid Kerkweg
Institut für Atmosphäre und Umwelt, Goethe Universität Frankfurt/Main
Prof. Dr. Bodo Ahrens
Dr. Peter Bissolli
Dr. Frank Kaspar
Kirchgessner, P. | J. Tödter, B. Ahrens, and L. Nerger
Will, A. | N. Akhtar, J. Brauch, M. Breil, E. Davin, H. Ho-Hagemann, E. Maisonnaive, M. Thürkow, and S. Weiher
Pham, v. T. | J. Brauch, B. Früh, and B. Ahrens
Kothe, S. | J. Tödter and B. Ahrens
Weimer, M. | S. Mieruch, G. Schädler, and C. Kottmeier