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Our department FE1 for Numerical Weather Prediction (NWP) of the German Weather Service (DWD) consists of about 90 scientists at DWD headquarters in Offenbach close to Frankfurt/Main and in Potsdam close to Berlin, about 40 of them on funded R&D projects. The department consists of four sections, with 20-25 scientists each:
DWD is a part of the German Ministery of Transport and Digital Infrastructure (BMVI), but our work is carried out in intensive cooperation with
and further international partners such as the
We are working on modeling and data assimilation for numerical weather prediction (NWP) and earth system simulation (ESM). Our main task is to provide operational data assimilation and forecasting with
We prepare a rapid update cycle (RUC) with forecasts every hour in integration with Nowcasting techniques. This system is called
Our development and services include ensemble data assimilation for the ensemble prediction systems
We run a
Further,
Data Assimilation includes the use of a broad varity of both direct and remote sensing measurements from
Geostationary satellites and polar orbiting satellites
are used operationally, while a lot of research is going into the better use of
hyperspectral observations (many thousand frequencies per observed atmospheric column) in particular over land and in cloudy situations. The observation and reconstruction
of snow, ice, sea surface temperature, land surface temperature, coverage, emissivity and soil moisture is a very active area of research. Also, the observation and data assimilation of
clouds and convective processes with high-impact phenomena
such as thunderstorms, heavy rain and wind gusts with lead times from minutes to days is a special
focus of our research.
The research of our group at the University of Reading, UK, is concerned with inverse problems and data assimilation in three areas:
These are extremely exciting areas scientifically and very important for society, for example for air traffic control, severe weather warnings and national energy supply, in medicine by medical imaging and for many industrial and environmental questions.
Since October 2020 I am heading the department on Numerical Weather Prediction (NWP) of DWD with about 90 researchers in-house. There are four division heads in this department to lead sections of approximately 20-35 researchers each, see group.
Thinking about faith and life has always been a passion for me. I have become a Christian and have started to explore the world as someone who follows Jesus - that has turned out to be quite an adventure and highly exciting. In my daily blog I explore thoughts and arguments about faith, and monitor how faith works on a daily basis: Jesus Network
Recent publications can be found on publications. A book Inverse Modeling by Nakamura and Potthast with an introduction into data assimilation and inverse problems has recently appeared at IOP.
Working in an operational center, our focus is to develop state-of-the-art high-dimensional analysis and simulation methods which can be run in a reliable way on a supercomputer in near real-time. It includes codes simulating atmospheric processes, fluid-dynamics, physical parametrizations, scattering of waves, propagation of light and radiation, tomography, large-scale optimization and uncertainty quanitfication, ensemble and particle methods.
With a SX-AURORA TSUBASA A412-8 of NEC our supercomputer at Deutscher Wetterdienst is no 140 (Nov 2020) Web on the TOP-500 Supercomputer List (2017 with CRAY we were no 99 and 130 Web). We have access to Cray XC40, Xeon E5-2695v4 of ECMWF, Mistral - bullx DLC 720, Xeon E5-2680v3 12C of DKRZ and Piz Daint - Cray XC50, Xeon E5-2690v3 12C 2.6GHz, Aries interconnect, NVIDIA Tesla P100 of CSCS in Switzerland.
High-performance computing is our daily business, however, the development of insight into the scientific problems we need to solve is an indispensable ingredient of our daily work. Part of this insight is based on mathematical analysis and the testing of computational methods for purpuse-built small-scale demonstration systems.
COST Action 1303 “TOPROF” Website;
Institutions