Dr. Sebastian Brune

My research is dedicated to the modelling, analysis, and prediction of the climate component in the Earth system, from sub-seasonal to multi-decadal time scales. For this purpose, I am creating climate simulations with MPI-ESM (Max-Planck-Institute Earth System Model) as well as with ICON (ICOsahedral Non-hydrostatic modeling framework) on the high performance computer at the German climate computing centre DKRZ. I am closely collaborating with colleagues from the Max Planck Institute for Meteorology (MPI-M), the DKRZ, the Helmholtz-Zentrum Hereon, and the German weather service DWD. My research is also tied to the wider European climate modelling community. A particular focus of my work is the support of students and early career scientists within the field of climate modelling.

Ongoing climate simulations within the scope of our group

• German seasonal forecast system GCFS, based on MPI-ESM-HR:
  Collaboration with colleagues from DWD, 30(50)-member retrospective (as well as operational) 6-month forecasts initialized every month 1990-present, a contribution to Copernicus Climate Change Service operational seasonal forecasts.
• Large-ensemble decadal prediction system, based on MPI-ESM-LR:
  80-member retrospective 10-year forecasts (hindcasts) initialized once a year at November 1st 1960-2021, parent system to DWD operational decadal prediction system.
• Large-ensemble historical and scenario simulations 1850-2100:
  50-member MPI CMIP6 grand ensemble, based on MPI-ESM-LR, a collaboration with colleagues from DKRZ and MPI-M.
• Model-consistent data assimilation:
  Development, simulation, and analysis of an ensemble assimilation system used to initialize our climate predictions. Our weakly coupled approach uses an oceanic ensemble Kalman filter (EnKF, via PDAF) assimilating monthly temperature and salinity profiles, and end-of-the-month sea ice concentration, together with atmospheric nudging to monthly ERA5 sea level pressure, temperature, and vorticity/divergence (MPI-ESM) or velocities (ICON), respectively.
• Support of novel research outside the trodden path:
  "On-demand" simulations with dedicated output.

Ongoing projects I am associated with:

• C3S seasonal forecasts
• Coming Decade
• ASPECT
• CMIP7/CAP7

Previous topics

• MiKliP II: Development of an inter-annual to decadal climate prediction system. 
• AODA-PENG II: Initialization of the oceanic component of the MPI-ESM by assimilating oceanic observations with an ensemble Kalman filter.

present Research Scientist Climate Modelling, Institute of Oceanography, CEN, University of Hamburg

2012 Ph.D., Leibniz-Institute for Atmospheric Physics at the University of Rostock, Kühlungsborn Analysis of the Global Spectrum of the Atmospheric Horizontal Kinetic Energy from the Boundary Layer to the Mesopause, advisor: Erich Becker

2000 - 2005 Geophysicist, Wintershall AG, Kassel

2000 Diploma degree in Geophysics, Technical University of Clausthal, Messung der komplexen elektrischen Leitfähigkeit im Labor und im Feld (Measurement of complex electric conductivity in laboratory and field experiments), advisor: Andreas Weller