Peter Duben

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Peter Duben

Postdoctoral Research Assistant

  • Atmosphere and Ocean Modelling: The development of future dynamical cores for ocean and atmosphere models, predictability of weather and climate simulations and the representation of sub-grid-scale processes. In particular, the development of customised finite element schemes for geophysical modelling, the use of unstructured and refined grids in global simulations, the representation and identification of boundary currents using dynamical systems theory, the adjustment of ensemble forecasts to provide realistic estimates for model uncertainty using stochastic parametrisation schemes and inexact hardware, and the propagation of model errors within a numerical simulation.
  • Inexact hardware: The use of new hardware that can trade precision for performance and energy consumption in atmosphere and ocean models. In particular, the use of stochastic processors that trade numerical precision and reproducibility against power consumption, the use of pruned hardware for which less significant parts of the floating-point unit are removed, the use of Field Programmable Gate Arrays that allow flexible floating-point precision, and the development of diagnostic tools that identify the optimal level of precision that can be used in complex models.
  • Chaotic and multi-scale systems:The use of cheap, imprecise numerical methods to calculate small-scale dynamics in atmosphere and ocean models while using high precision methods to integrate large and predictable scales. In particular, the reduction of precision when calculating high wave-numbers in spectral atmosphere models using inexact hardware or computational methods with reduced accuracy, and multi-grid approaches that couple fine and coarse grids for grid point models.

09/2012-10/2016: Scientist
At the European Centre for Medium Range Weather Forecasts (ECMWF), Reading, UK.
See details here.

09/2012-10/2016: PostDoc
At the University of Oxford, UK. Supervised by Tim Palmer.

07/2012-08/2012: PostDoc
At the Max Planck Institute for Meteorology in Hamburg, Germany. Supervised by Peter Korn and Jochem Marotzke.

04/2009-06/2012: Ph.D. studies
'Finite element methods, grid refinement, and boundary currents in geophysical modeling', written at the Max Planck Institute for Meteorology in Hamburg, Germany. Supervised by Peter Korn and Jochem Marotzke. Member of the IMPRS on Earth System Modeling.

04/2004-03/2009: Diploma studies
At the Westfälische Wilhelms-Universität Münster, Germany. Final degree: Diploma in Physics

01/2009: Diploma thesis
'Numerical application of the pathintegral formalism in hydrodynamic turbulence', written at the Institute for Theoretical Physics at the Westfälische Wilhelms-Universität Münster, Germany. Supervised by Gernot Münster and Dirk Homeier