My research

I recently completed my PhD under the supervision of Jochem Marotzke, Johann Jungclaus and Thorsten Mauritsen at the IMPRS and University of Hamburg. In my thesis I investigate two aspects of the climate system that can disrupt our expectations of surface warming on Earth:

  • internal variability, with a focus on the 1998–2012 slowdown in surface warming, and
  • changes to Earth's climate sensitivity.

In my current position I am investigating causal connections between decadal climate signals and previous climate states or policy decisions.




Hedemann, C., T. Mauritsen, J. Jungclaus and J. Marotzke (2017). The subtle origins of surface-warming hiatuses. Nature Climate Change 7.5, 336–339, doi: 10.1038/nclimate3274


Before 2017

El-Zein, A. H. and C. Hedemann (2016). Beyond problem solving: Engineering and the public good in the 21st Century. Journal of Cleaner Production 137, 697–700, doi: 10.1016/j.jclepro.2016.07.129

Côte, C. M., C. J. Moran, C. Hedemann and C. Koch (2010). Systems modelling for effective mine water management. Environmental Modelling & Software 25, 1664–1671, doi: 10.1016/j.envsoft.2010.06.012



Hedemann, C. (2017). Conflicting expectations of global surface warming. PhD-Thesis, Universität Hamburg, Hamburg. Berichte zur Erdsystemforschung, 196, doi: 10.17617/2.2482982 [Fulltext]