K. Hauke Kraemer


Our research is concerned with the (further) development of statistical instruments for the reconstruction of environmental changes and thus the reliability of climate proxies underlying these reconstructions. The focus is here in the methodological area of recurrence analysis, a method from non-linear physics. In particular, this instrument is intended to further investigate regime transitions in complex systems. The aim is to suit this methodology from the theoretical system research and time series analysis to the special challenges in climatology / paleoclimatology / climate dynamics. Here a major challenge is to deal with partially incomplete, not sufficiently distributed measurements of faulty climate proxies, and the non-stationary they inherent and thus pave the way for a broader application in (Geo)sciences.


Potsdam Institute for Climate Impact Research (PIK)
P.O. Box 60 12 03
14412 Potsdam


Complex Systems, complex networks, non-linear Dynamics, time series analysis, Recurrence Quantification Analysis, recurrence networks

Pitsik, E., Frolov, N., Kraemer, K.H., Grubov, V., Maksimenko, V., Kurths, J., Hramov, A (2020): Motor execution reduces EEG signals complexity: Recurrence quantification analysis study, Chaos 30, 023111, https://doi.org/10.1063/1.5136246

Kraemer, K.H., Marwan, N. (2019): Border effect corrections for diagonal line based recurrence quantification analysis measures,Physics Letters A,Volume 383, Issue 34,2019,125977,ISSN 0375-9601, https://doi.org/10.1016/j.physleta.2019.125977

Kraemer, K.H. (2019), hkraemer/Border-effect-corrections-for-diagonal-line-based-recurrence-quantification-analysis-measures: MATLAB routines for RQA border effect and tangential motion correction, https://doi.org/10.5281/zenodo.3384892, Jun. 2019.

Trauth, M.H., Asrat, A., Duesing, W., Foerster, V., Kraemer, K.H., Marwan, N., Maslin, M.A., Schaebitz, F. (2019) Classifying past climate change in the Chew Bahir basin, southern Ethiopia, using recurrence quantification analysis. Climate Dynamics, https://doi.org/10.1007/s00382-019-04641-3

Kraemer, K. H., Donner, R. V., Heitzig, J., Marwan, N. (2018): Recurrence threshold selection for obtaining robust recurrence characteristics in different embedding dimensions. - Chaos 28, 085720 https://doi.org/10.1063/1.5024914 

Foerster, V., Deocampo, D. M., Asrat, A., Günter, C., Junginger, A., Kraemer, K. H., Stroncik, N., Trauth, M. H. (2018): Towards an understanding of climate proxy formation in the Chew Bahir basin, southern Ethiopian Rift. - Palaeogeography Palaeoclimatology Palaeoecology501, pp. 111—123.
DOI: http://doi.org/10.1016/j.palaeo.2018.04.009