EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Integrative multivariate study of past African climate variability

Norbert Marwan1,2, Jonathan F. Donges1, Reik V. Donner3, and Deniz Eroglu4
Norbert Marwan et al.
  • 1Potsdam Institute for Climate Impact Research, Potsdam, Germany (
  • 2Institute of Geoscience, University of Potsdam, Potsdam, Germany
  • 3Magdeburg-Stendal University of Applied Sciences, Magdeburg, Germany
  • 4Kadir Has University, Istanbul, Turkey

Based on a set of various marine palaeoclimate proxy records, we investigate African climate variations during the past 5 million years. We use a collection of modern approaches from non-linear time series analysis to identify and characterise dynamical regime shifts as changes in signal predictability, regularity, complexity, and higher-order stochastic properties such as multi-stability. We observe notable nonlinear transitions and important climate events in the African palaeoclimate, which can be attributed to phases of intensified Walker circulation, marine isotope stage M2, the onset of northern hemisphere glaciation, and the mid-Pleistocene transition, and relate them to variations of the Earth's orbital parameters.

How to cite: Marwan, N., Donges, J. F., Donner, R. V., and Eroglu, D.: Integrative multivariate study of past African climate variability, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-6559,, 2022.