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Dr. Tim Kittel

PostDoc at the Potsdam Institute for Climate Impact Research

Research Domain IV "Transdisciplinary Concepts & Methods"

Research Interests:

  • Analysis of transient dynamics in nonlinear complex system analysis. Particular applications of interest are the "transformation to a renewables-based power grid" in cooperation with CoNDyNet (Kollektive Nichtlineare Dynamik Komplexer Stromnetze) and a "transition to a sustainable future within Planetary Boundaries" with the COPAN Flagship-Project [1,4]
  • Notions of stability in complex systems and networks: e.g. extension of the non-local stability measure Basin Stability [2,3]



Since Dec 2014, I am in the group of Prof. J. Kurths working in the framework of the IRTG1740 "Dynamical Phenomena in Complex Networks: Fundamentals and Applications" (a cooperation between DFG and FAPESP) affiliated to Humboldt-Universität zu Berlin

Fun Fact(s):


  • PyViability is a library dedicated to Viabilty and "Topology of Sustainable Management" Computation developed during the research on [4].
  • alpha shapes is a small library for fast computation of concave hulls of point clouds in Python (using numba for speed).
  • AYS model is the research code to demonstrate the application of PyViability and to produce the results in [4].
  • Global Structures for ENSO and Volcanoes is the research code yielding the results for [5].


[6] J. F. Donges, J. Heitzig, W. Barfuss, J. A. Kassel, T. Kittel, J. J. Kolb, T. Kolster, F. Müller-Hansen, I. M. Otto, M. Wiedermann, K. B. Zimmerer, and W. Lucht.,  Earth system modelling with complex dynamic human societies: the copan:CORE World-Earth modeling framework, Earth System Dynamics Discussions, doi: 10.5194/esd-2017-126 (2018).
[5] T. Kittel, C. Ciemer, N. Lotfi, T. Peron, F. Rodrigues, J. Kurths, and R. V. Donner, Global teleconnectivity structures of the
El Niño–Southern Oscillation and large volcanic eruptions: An evolving network perspective
(2017). (arxiv, submitted to Nonlin-
ear Processes in Geophysics, in revision)
[4] Kittel, T., Koch, R. , Heitzig, J., Deffuant, G., Mathias, JD., Kurths J., Operationalization of Topology of Sustainable Management to Estimate Qualitatively Different Regions in State Space (arXiv:1706.04542, submitted to Environmental Modelling and Software)
[3] Mitra, C., Kittel, T., Choudhary, A., Kurths, J., Donner, R. V.: Recovery time after localized perturbations in complex dynamical networks, New Journal of Physics, Volume 19 (2017).
[2] Kittel T., Heitzig J., Webster K., Kurths J.: Timing of Transients: Quantifying Reaching Times and Transient Behavior in Complex Systems, New Journal of Physics, Volume 19 (2017).
[1] Heitzig, J., Kittel, T., Donges, J. F., and Molkenthin, N.: Topology of sustainable management of dynamical systems with desirable states: from defining planetary boundaries to safe operating spaces in the Earth system, Earth Syst. Dynam., 7, 21-50, doi:10.5194/esd-7-21-2016 (2016).

Postal Address:
Tim Kittel
Potsdam Institute for Climate Impact Research
Telegraphenberg A 31
Postfach 60 12 03
D-14412 Potsdam

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