The Intergovernmental Panel on Climate Change (IPCC) has opened registration for expert reviewers of the first-order draft (FOD) of the Special Report on Climate Change and Cities.

Following the second lead author meeting in August 2025, the authors of this report have prepared a first draft, and experts worldwide are sought for review and comments.

The review of the FOD is the first of multiple review stages for every IPCC report. The review process is critical in preparing IPCC reports to ensure scientific rigor, the widest range of perspectives, and relevance to the urgent challenges urban areas and communities face in a warming world and changing climate.

Scheduled for release in March 2027, the Special Report on Climate Change and Cities will be the first IPCC report published in the seventh assessment cycle. It is also the only special report in the current cycle.  The report aims to provide a timely assessment of the latest science related to climate change and cities, including climate impacts and risks, as well as adaptation and mitigation options. 

All review comments will be addressed by the authors. The comments and the author responses, together with the drafts, will be published after the report is finalized. 

Interested experts can register for participation in the review here.

The registration of experts will close November 30, 2025.

The FOD review period will close December 12, 2025. 

Learn more here.