Who I am

Current position

I am the scientific project coordinator of the German research initiative "Wolken und Niederschlagprozesse im Klimasystem" HD(CP)2.  This is a BMBF-funded 3-to-6-year project that is distributed over 18 institutes across Germany and involves currently more than 120 scientists. The main focus is to use high resolution modelling and observations to improve our understanding of how clouds and precipitation influence climate predictability.

Other activities 

Before this position, I have been working for two years as chapter scientist for the upcoming IPCC 5th AR. I have coordinated and helped the international effort for the chapter on climate model evaluation in working group I, together with the coordinating lead authors Jochem Marotzke and Greg Flato.


I am strongly interested in the political frame work of climate change science and policy. Some of my current and recent activities are:

  • Together with Sebastian Sonntag I am currently setting up the Young Earth System Science community to strengthen the network of Young German Earth System scientists from different graduate schools and institutions. YESS was founded in October 2010.
  • I am conference chair and coordinator of the Interdisciplinary Conference of Young Earth System Scientists 2013, see icyess.eu for more details.
  • I am member of the scientific advisory board for the webpage klimafakten.de.
  • I am contributing author of the IPCC AR5.
  • I initiated the organisation of an IPCC seminar series (2008) and I have been chair of the simulated MUN Copenhagen conference (2009) here at MPI-M (Press Release (German)).
  • I was part of the scientific advisory team to translate the IPCC 2007 FAQs into German (Link).