German Climate Computation Center

The German Climate Computing Centre (DKRZ) is a non-profit and non-commercial limited company with four shareholders: the Max Planck Society, the City of Hamburg (represented by the University of Hamburg), the Helmholtz Centre Geesthacht, and the Alfred Wegener Institute for Polar and Marine Research in Bremerhaven.

As a national service provider, DKRZ operates a supercomputer centre to enable climate simulation and provides the scientific users with the technical infrastructure needed for processing and analysis of climate data. This also includes support for related application software, advice and support in data processing issues.

The users from the MPS come primarily from the Max Planck Institute for Meteorology in Hamburg, the Max Planck Institute for Chemistry in Mainz as well as from the Max Planck Institute for Biogeochemistry in Jena.


Bundesstr. 45a
20146 Hamburg
Phone: +49 40 460094-0
Fax: +49 40 460094-270

PhD opportunities

This institute has no International Max Planck Research School (IMPRS).

There is always the possibility to do a PhD. Please contact the directors or research group leaders at the Institute.

ESiWACE: Towards cloud resolving climate models

2017 Neumann, Philipp; Biercamp, Joachim
Climate Research Computer Science
Quantitative estimates for extreme weather situations are of essential importance. For this purpose, simulation models are required that are able to resolve clouds as well as fine-scale eddies in ocean flow. These models have to provide a resolution of one kilometer and need to be able to predict several months per calendar day. ESiWACE combines weather and climate sciences and targets the optimization of simulation workflows on supercomputers. A main goal is the investigation of technical feasibility and limitations of cloud-resolving models. more

Mistral: Final expansion stage of the high-performance computer at DKRZ starts operation

2017 Böttinger, Michael; Meyer, Jana
Climate Research Computer Science

In July 2016 the second expansion stage of Mistral, the third "High-performance computing system for Earth system research" (HLRE-3), started its operation. The system by Atos/Bull delivers a peak performance of 3.6 quadrillion numerical operations per second to the German climate research community. In November Mistral occupied position no. 34 worldwide on the TOP500 list and is currently the third most powerful German HPC system. Mistral’s parallel file system has a capacity of 54 petabytes and occupies position no. 2 on the list, which compares the largest file systems worldwide.


New supercomputer at DKRZ ensures Germany’s leading position in climate research

2016 Böttinger, Michael; Meyer, Jana
Climate Research Computer Science Earth Sciences
In 2015 DKRZ took its third high performance computing system for earth system research (HLRE-3) into operation. 41 million euros, funded by BMBF and HGF, enabled DKRZ to install the new energy-efficient PetaFLOPS supercomputer “Mistral”, to upgrade its HPSS archive system, as well as to adapt the datacenter's technical infrastructure to the new requirements. Mistral is installed in two phases: its first phase took up the operation in July. Its final stage, planned to be completed in summer 2016, will deliver three PetaFLOPs. In October, DKRZ and numerous guests officially inaugurated Mistral. more

High volume data storage and energy efficiency

2015 Ludwig, Thomas; Dolz, Manuel; Kuhn, Michael; Kunkel, Julian; Lenhart, Hermann
Climate Research Computer Science

The research group "scientific computing" of Thomas Ludwig at DKRZ and at the Universität Hamburg puts its focus on the storage of high volume data sets in high performance computing systems and investigates issues of energy efficiency. Innovative new compression algorithms reduce the storage space for data intensive climate simulations and optimize the energy consumption of the respective storage systems. Complementary to this, the groups offers lecture courses at the university in the area of technical and methodological aspects of high performance computing.


25 years of high performance computing for climate research

2014 Böttinger, Michael; Meyer, Jana
Climate Research Computer Science Earth Sciences
For more than 25 years the German Climate Computing Center has been providing high performance computing platforms, data storage systems and related services exclusively and tailor-made to the German climate research. This lays the foundation for world-class climate science which is reflected in the contributions to the official symposium and the user workshop in February 2013 on the occasion of DKRZ’s anniversary. The following article will briefly review the exciting first 25 years of DKRZ. more

Measures to boost energy efficiency at DKRZ

2013 Garternicht, Ulf; Vogt, Gerald; Meyer, Jana
Climate Research Computer Science

The power consumption at DKRZ for the high performance computing system Blizzard, disk systems, other IT-infrastructure and the cooling systems adds up to 2 MW. In 2011 the power input reached 17 GWh causing energy costs of 1.85 million Euro. DKRZ works intensively on the optimization of its energy efficiency: cold aisle and hot aisle housings for Blizzard were built and the cooling water circuits as well as the refrigerating machines were optimized. According to the measures being taken 750 MWH respectively 425 tons CO2 and thus about 100.000 Euro of the running costs can be saved per year.


CMIP5 - Climate simulations and data base for the next IPCC report

2013 Legutke, Stephanie; Kindermann, Stephan; Glushak, Ksenia; Böttinger, Michael; Lautenschlager, Michael
Climate Research Computer Science
The German contribution to the CMIP5 project and to the climate model database for the 5th IPCC report has been generated at the DKRZ with the Earth system model of the MPI for Meteorologie. Three model configurations have been used in 482 simulations according to the CMIP5 data protocol. A total of 61 TB of data is available now. Some of the CMIP5 model results will be downscaled over Africa or Europe in the framework of the CORDEX project. The German activities are embedded in a worldwide collaborative project. All model results will be available in the Earth System Grid Federation (ESGF). more

ScalES - Scalable Earth-System-Models

2012 Jörg Behrens, Joachim Biercamp, Thomas Jahns, Jana Meyer
Climate Research Computer Science
The ScalES project addressed typical scaling problems of coupled earth system models. Scientists from DKRZ (also coordination), Alfred-Wegener-Institute for Polar and Marin Research, IBM Germany, Max Planck Institute for Chemistry, Max Planck Institute for Meteorology and Karlsruher Institute for Technology cooperated in creating software libraries of general use for improving the scaling of earth system models and beyond. Major components are parallel IO, partitioning and parallelization module, and global communication (UniTrans). more

Earth system modeling – a data intensive science - and data management at DKRZ

2011 Michael Böttinger, Stephan Kindermann, Jana Meyer, Hans Ramthun
Climate Research Computer Science
In 2010 the group “M&D” became the fourth department “data management” at DKRZ, being in charge for the WDCC, consortial simulations and a long-term archiving service. DKRZ participates in the Metafor project, which created a Common Information Model. The model describes climate data and the models that produce it in a standard way. In 2010 DKRZ informed the public actively about its work. Apart from the participation in public events DKRZ organized own conferences. more

A year of change and modernisation

2010 Biercamp, Joachim; Böttinger, Michael; Meyer, Jana
Climate Research Earth Sciences
This was a year of change: Early in 2009, the new IBM supercomputer and the new data archive system were installed. The new management of DKRZ took up its work in May, and in autumn DKRZ moved into a new building. A further special highlight was the DKRZ inauguration with high-ranking guests in December. The new supercomputer allows for more complex simulations such as the computations for the forthcoming IPCC report AR5 or the STORM experiment. The scientific work of DKRZ's new director, Prof. Thomas Ludwig, focuses on the energy efficiency of high-performance computers. more
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