Fig. 2: IPCC Timeline: assessment cycles, the volume of literature, key events and procedural change.
From: Back to basics for the IPCC: applying lessons from AR6 to the Seventh Assessment Cycle

Web of Science (https://www.webofscience.com) search results of the number of papers tagged with ‘climate change’ (blue dots) from 1980 until 2021 compared with the number of selected authors in each of the six IPCC cycles (combined totals for all three working groups). IPCC Milestones, Controversies and Procedures changes from DePryck et al.5. IAC review = InterAcademy Council review of IPCC processes and procedures31.