High Resolution WRF Simulations for Climate Change Studies in Germany

Kirsten Warrach-Sagi (), Viktoria Mohr () and Volker Wulfmeyer ()
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Kirsten Warrach-Sagi: University of Hohenheim, Institute of Physics and Meteorology
Viktoria Mohr: University of Hohenheim, Institute of Physics and Meteorology
Volker Wulfmeyer: University of Hohenheim, Institute of Physics and Meteorology

A chapter in High Performance Computing in Science and Engineering ' 17, 2018, pp 431-440 from Springer

Abstract: Abstract The scope of WRFCLIM is to produce high resolution regional climate simulations with WRF from 1958 to 2100 in the framework of the BMBF funded ReKliEs-De (Regionales Klimaensemble für Deutschland) and the DFG funded research unit on regional climate change (FOR 1695) on a 0.11∘ (approx. 12 km) grid and further downscale one projection to 0.0275∘ (approx. 3 km) resolution within the FOR 1695 project from 2000 to 2040. The overall goal of ReKliEs-De is to derive robust climate change information on high spatial resolution for Germany and the large river catchments draining into Germany from this unique model ensemble. The University of Hohenheim (UHOH) contributes five simulations using WRF to the joint Global Climate Model-Regional Climate Model-matrix, including pre- and post-processing of model input and output data, evaluation of the single model results and delivery of the resulting data to the partners for further post-processing, distribution and storage. The scientific focus of the analyses performed at UHOH is the estimation of the bandwidth of the ensemble results in close cooperation with the project partners. It is the joint objective of the Research Unit on regional climate change to investigate the effects of global climate change on structure and functions of agricultural landscapes on a regional scale and to work out projections for their development until 2040 taking into consideration various possible socio-economic conditions and adaptation processes. In order to achieve these objectives, the WRF model is coupled with land surface and crop models as well as with multi agent systems in a new integrated land-system model system, and structure and parameterisation of various model components are optimised. Within WRFCLIM verification runs of WRF with and without the crop model GECROS, which includes recent improvements with respect to the representation of agricultural land cover, over Central Europe with convection-permitting (CP) resolution will be simulated downscaling ERA-Interim forced WRFCLIM simulation data from 0.11∘ are currently ongoing.

Date: 2018
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DOI: 10.1007/978-3-319-68394-2_25

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