Short Description

1. Background

The recent accumulation of extreme hydrological events in Bavaria and Québec has stimulated scientific and also societal interest. In addition to the challenges of an improved prediction of such situations and the implications for the associated risk management, there is as yet no confirmed knowledge whether and how climate change contributes to the magnitude and frequency of hydrological extreme events and how regional water management could adapt to the corresponding risks.
The ClimEx project thus investigates the effects of climate change on meteorological and hydrological extreme events and implications for water management in Bavaria and Québec.


2. ClimEx Modules

ClimEx is designed as a module based system and currently comprehends 3 modules:

The CLIMATE module builds on the development of a large ensemble of high resolution data (12km) of the CRCM5 RCM for Central Europe and North-Eastern North America, downscaled from 50 members of the CanESM2 GCM. The dataset will additionally contain the available data from the Euro-CORDEX project to account for the assessment of both natural climate variability and climate change. The large ensemble with several thousand model years provides the potential to catch rare extreme events and improve the process understanding of extreme events with return periods of 100+ years.

The HYDROLOGY module focuses on modeling the major catchments in Bavaria and Southern Québec in high temporal and spatial resolution using physically based hydrological models. The climatic forcing by the data produced and collected in module CLIMATE allows us to make statements on natural variabilty and future changes for hydrological extreme events as well - with a focus on floods and high flows.


In order to enhance efficiency for these analyses the third project component deals with the consolidation, coupling, and optimization of the two previous modules. Therefore, the LRZ provides its expertise in HPC and data management to consolidate all available software tools to enable an optimized and smooth work flow. The great demands of computation power for both modeling climate and hydrology are met by the application of the LRZ’s SuperMUC and Linux Cluster.

Further modules may be added inbetween B and Z in possible future projects and could also benefit from the unique climate dataset of ClimEx. This migth include agriculture, forestry, energy, ecology, health or any other field.