IPCC Special Report on Climate Change and Cities Second Order Draft: details and how to apply
Published 6 May 2026
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About the Expert Review
The SOD of the Special Report on Climate Change and Cities will be available for expert review from 8 May 2026 until 3 July 2026, 9.59pm GMT.
The Expert Review of the SOD is a key element of the IPCC assessment process, helping to ensure that the report provides a balanced and comprehensive assessment of the latest available scientific findings. The IPCC Procedures state that the review process should be objective, open and transparent, with a wide circulation that aims to involve as many independent experts as possible, seeking a wide range of views, expertise, and geographical representation. To this end, your review comments will be most helpful if they:
- address specific text, tables or figures in the draft and provide clear suggestions for changes in wording or content where appropriate. Please provide full references for any additional literature cited in a review comment
- recognize the specific mandates of IPCC and of Working Group I, II and III together with the approved outline of the report and do not require the authors to go beyond that scope
- ensure that any suggested changes to the Summary for Policymakers (SPM) of the report are fully consistent with material in the chapters of the report and provide cross references to that material
- recognize that the authors are required to work within strict length constraints and must present a concise assessment of current knowledge, not a scientific review of how that knowledge was derived
- give attention to ways of shortening the chapters and the SPM of the report where possible
How to apply
The IPCC is inviting experts to register as prospective reviewers of the SOD of the Special Report on Climate Change and Cities via the IPCC website.
Registration closes on 26 June 2026 at 9.59pm GMT. Additional information on the role of an Expert Reviewer can be found in Annex 1 of Appendix A to the Principles Governing IPCC Work, and the outline of the report can be found in Decision IPCC-LXI-5 from the Panel’s 61st Session in Sofia, Bulgaria (27 July to 2 August 2024).
The UK is committed to diversity and inclusion in the IPCC process. We encourage and value the participation of experts from groups, including, but not limited to, women and non-binary people, the LGBTQ+ community, ethnic minorities, and people with disabilities. Expert Reviewers are also expected to adhere to the IPCC Code of Conduct.