Writing the IPCC AR6 Report: Behind the Scenes



On 9 August 2021, the Intergovernmental Panel on Climate Change (IPCC) released the first volume of its 6th Assessment Report (AR6). The Working Group I contribution to the Report (Climate Change 2021: The Physical Science Basis) synthesises over 14,000 publications and represents the most comprehensive and up-to-date assessment of the climate system and climate change. Crucially, the Report highlights the unprecedented and potentially irreversible influence of anthropogenic climate forcing, and for the first time, explicitly states that human influence on the climate system is unequivocal.

This short course will be a panel discussion where authors and contributors of Working Group I unpack how the IPCC 6th Assessment Report (AR6) is produced, provide personal behind-the-scenes insight on its development, and discuss its global impact, including how it is used to inform policy. Authors of the report will share their experiences of working on the report before and through the COVID pandemic. Panelists will also emphasise various ways in which scientists of all career stages can contribute to the IPCC process. Ample time will be allocated for open discussion for the audience to ask related questions to the panelists.

For more information about the AR6 please visit the IPCC website:

Co-organized by AS6/CL6/CR8/HS11/NH11/OS5
Convener: TJ YoungECSECS | Co-conveners: Katherine Leitzell, Sarah Connors, Sophie BergerECSECS
Wed, 25 May, 10:20–11:50 (CEST)
Room -2.61/62

Session assets

Session materials


  • Katherine Leitzell, Universite Paris Saclay, France
  • Sophie Berger, European Commission, Belgium
  • Erika Coppola, The Abdus Salam International Centre for Theoretical Physics, Italy
  • Annalisa Cherchi, National Research Council of Italy, Institute of Atmospheric Sciences and Climate (CNR-ISAC), Italy
  • Erich Fischer, ETH Zürich, Switzerland