> index : about

Ilhan Özgen–Xian

Assistant Professor, Institute of Geoecology, Technische Universität Braunschweig, Langer Kamp 19c, 38106 Brunswick, Germany.

Affiliate Faculty, Earth and Environmental Sciences Area, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USA.

Research interests

  • soil-plant-atmosphere continuum
  • vegetation self-organisation
  • terrestrial ecohydrology and biogeochemistry


  • 2021–present
    Assistant Professor, TU Braunschweig, Germany
    Affiliate Faculty, Berkeley Lab, USA
  • 2018–2021
    Postdoc, Berkeley Lab, USA
  • 2018
    Postdoc, AICS RIKEN, Japan
  • 2017
    PhD, Computational Hydrology, TU Berlin, Germany
  • 2012–2017
    Research Associate, TU Berlin, Germany
  • 2011
    MSc, Civil Engineering, TU Berlin, Germany


Invited talks

  • Climate emergency calls for process-based modelling, 30 Mar 2022, UWI Guest Lecture, Technische Universität Berlin, Germany.
  • Integrated surface–subsurface flow simulations in a mountainous catchment in Colorado, USA, 11 Feb 2022, Institute of Water and River Basin Management, Karlsruhe Institute of Technology, Germany.
  • Contributions to the modeling of environmental flows in computational hydrology, In: Water Engineering and Development Centre seminar series, 15 Oct 2020, Loughborough University, Loughborough, UK.
  • Hyperbolizing the zero-inertia equation, In: Seminar on recent advances in shallow flow modeling, 21 Mar 2019, Technische Universität Berlin, Berlin, Germany.
  • Some contributions to the numerical solution of the zero-inertia model, 8 Mar 2018, Disaster Prevention Research Institute, Kyoto University, Kyoto, Japan.
  • Integral porosity shallow water models for urban flood forecasting, In: 8th AICS International Symposium, 8 Feb 2018, Kobe, Japan.
  • Coarse grid methods for the Godunov-type shallow water model, In: EuroAqua Colloquium, 25 Jan 2017, Brandenburgische Technische Universität Cottbus-Senftenberg, Cottbus, Germany.


Guest editor

Session organiser

  • The shallow water model intercomparison session: Benchmarking overland flow simulations, IAHR World Congress 2022, Granada, Spain (accepted).
    Coörganisers: D. Caviedes-Voullième, M. Morales-Hernández, X. Xia
  • Advances in modeling environmental flow across interfaces, SIAM Conference on Mathematical and Computational Issues in the Geosciences 2021, Milan, Italy.
    Coörganisers: K.T. Mandli, E. Matta
  • Advances in shallow flow modeling for water resources and hydrological engineering, AGU Fall Meeting 2019, San Francisco, USA.
    Coörganisers: M. Morales-Hernández, B.F. Sanders
  • Development and application of the next generation of shallow flow models, 13th International Conference on Hydroinformatics 2018, Palermo, Italy.
    Coörganisers: X. Xia, J. Hou, D. Liang, Q. Liang, R. Hinkelmann

Reviewer (selection)

  • Journal of Hydrology
  • Advances in Water Resources
  • Journal of Hydroinformatics


  • PhD committee member of F. Tügel, 2022
  • PhD committee member of J. Zhao, 2019

Honours and awards

  • Argonne Training Program on Extreme-scale Computing — Selected Participant, 2019
  • Chorafas Foundation Award in Engineering of Finance and Risk Managementq, 2017
  • Dr.-Ing. Ernst Trapp Award, 2012


  • American Geophysical Union
  • European Geosciences Union