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Ralf Loritz

M.Sc. Hydrol. Ralf Loritz

Ph. D. Student
Room: 402
Phone: +49 721 608-43248
ralf loritzYab2∂kit edu

Karlsruher Institut für Technologie (KIT)
Institut für Wasser und Gewässerentwicklung
Bereich Hydrologie
Kaiserstraße 12
76131 Karlsruhe

Research interests


  • Applying concepts from information theory and thermodynamics in hydrology
  • Physically-based and data-driven modelling
  • Machine learning and data mining 
  • Time series analysis



Peer-reviewed papers (ISI)

  • Zehe, E., Loritz, R., Jackisch, C., Westhoff, M., Kleidon, A., Blume, T., Hassler, S., and Savenije, H. H.: Energy states of soil water – a thermodynamic perspective on storage dynamics and the underlying controls, Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2018-346, in review, 2018.
  • Loritz, R., Gupta, H., Jackisch, C., Westhoff, M., Kleidon, A., Ehret, U., and Zehe, E.: On the dynamic nature of hydrological similarity, Hydrol. Earth Syst. Sci., 22, 3663-3684, https://doi.org/10.5194/hess-22-3663-2018, 2018.
  • Loritz, R., Hassler, S. K., Jackisch, C., Allroggen, N., van Schaik, L., Wienhöfer, J. & Zehe, E. (2017): Picturing and modeling catchments by representative hillslopes. Hydrology and Earth System Sciences, 21(2), 1225-1249.


Conference presentations (Oral)

  • Loritz, R. (2018, Invited) - Is there an optimum? How information theory and thermodynamics can help to identify the needed spatial complexity of hydrological models. Workshop - Improving the theoretical underpinnings of hydrologic models - Sopron, Hungary
  • Loritz, R., Gupta, H., C. Jackisch, M. Westhoff, A. Kleidon, U. Ehret, and Zehe, E. (2018): On the dynamic nature of hydrological similarity. European Geosciences Union General Assembly 2018, Vienna. Austria
  • Loritz, R., Neuper, M., Gupta, H., and Zehe, E. (2017): How to handle spatial heterogeneity in hydrological models. European Geosciences Union General Assembly 2017, Vienna. Austria
  • Loritz, R., Hassler, S., Jackisch, C., and Zehe, E. (2016): Picturing and modelling catchments by representative hillslopes. European Geosciences Union General Assembly 2016, Vienna. Austria


Conference presentations (Poster)

  • Kiese, N., Loritz, R., Allroggen, N. and Zehe, E. (2017): Influence of bedrock topography on the runoff generation under use of ERT data. Poster presentation. EGU General Assembly 2017. Vienna. Austria
  • Wienhöfer, J., R. Loritz and Zehe, E. (2015): Model-based quantification of hydrological similarity at the hillslope scale. European Geosciences Union General Assembly 2015, , Vienna. Austria
  • Loritz, R., Weiler, M. and Seibert, S. (2015): Data mining methods for predicting event runoff coefficients in ungauged basins using static and dynamic characteristics. European Geosciences Union General Assembly 2015, , Vienna. Austria



  • DFG research unit FOR 1598 'CAOS' (From Catchments as Organized Systems to Models based on Functional Units). more... External Link