You are here: Home PIK Members Jonatan Siegmund

MSc. Climate- and Environment Sciences

MSc. Climate- and Environment Sciences
PhD student
Potsdam Institute for Climate Impact Research (PIK)
Telegraphenberg A56
Phone: +49 (0)331 288 20724
Email: jonatan.siegmund[at]
Postal Address
P.O. Box 60 12 03
14412 Potsdam


About me

My current work is embedded in the 'BMBF Young Investigators Group CoSyCC²'. CoSyCC² is the acronym for 'Complex System Approaches for understanding Causes and Consequences of Past, Present and Future Climate Change'.

The aim of my PhD research is to use modern statistical approaches (e.g. event coincidence analysis) to investigate the impact of climatic extreme events on terrestrial ecosystems. So far, my focus was on the reaction of wildlife plant flowering on temperature and precipitation extremes. Currently I am working on daily stem diameter growth of several tree species and their reaction to weather related stress.

Further research interests

  • ecosystem stability/susceptibility/resilience in a changing world
  • inventive statistical methods
  • seasonal weather forecasts for water prone regions



CoSyCC²: Complex System Approaches for understanding Causes and Consequences of Past, Present and Future Climate Change. BMBF grant no. 01LN1306A

COST Action FP1106 STReESS: Studying Tree Responses to extreme Events: a SynthesiS.

DAAD Project: Nichtlineare Charakterisierung spätholozäner Klimavariabilität: Joint DAAD Projekt with the University of Tromso

ICLEA: Virtual Institute of Integrated Climate and Landscape Evolution Analysis

TERENO: Terrestrial Environmental Observatories project of the Helmholtz Association


Since August 2015, my PhD project is founded by a PhD scholarship, avarded by the "Evangelisches Studienwerk Villigst e.V."



Wiedermann, M., Siegmund, J. F., Donges, J., Kurths, J. and Donner, R. V. (2017): Differential imprints of distinct ENSO flavors in global extreme precipitation patterns. Climate Dynamics, under Review.

Baumbach, L., Siegmund, J. F., Mittermeier, L. and Donner, R. V. (2017): Impacts of temperature extremes on European vegetation during the growing season. Biogeosciences, under Review.

Siegmund, J. F., Siegmund, N. and Donner, R. V. (2017): CoinCalc - A new R package for quantifying simultaneities of event series. In: Computers and Geosciences, 98, 64-72,

Siegmund, J. F., Wiedermann, M., Donges, J. F., and Donner, R. V. (2016): Impact of temperature and precipitation extremes on the flowering dates of four German wildlife shrub species. In: Biogeosciences, 13, 5541–5555, doi:10.5194/bg-13-5541-2016

Siegmund, J.F., Sanders T.G.M., Heinrich I., van der Maaten E., Simard S., Helle G. and Donner R.V. (2016): Meteorological Drivers of Extremes in Daily Stem Radius Variations of Beech, Oak, and Pine in Northeastern Germany: An Event Coincidence Analysis. Frontiers in Plant Science 7:733. doi: 10.3389/fpls.2016.00733

Donges, J.F., Schleussner, C.-F., Siegmund, J.F. and Donner, R.V. (2016): Event coincidence analysis for quantifying statistical interrelationships between event time series: on the role of flood events as triggers of epidemic outbreaksEuropean Physical Journal Special Topics, 225(3), 471-487, doi: 10.1140/epjst/e2015-50233-y.

Siegmund, J.F., J. Bliefernicht, P. Laux, and H. Kunstmann (2015): Towards a seasonal precipitation prediction system for West Africa: Performance of CFSv2 and high-resolution dynamical downscaling. In: Journal of Geophysical Research - Atmospheres, 120, doi:10.1002/2014JD022692.



R package CoinCalc: Including 6 functions for the application of Event Coincidence Analysis (Donges et al. 2015, Siegmund etal. 2016).

Full CV:
CV_Siegmund.pdf — application/force-download, 625 KB

Document Actions