IPCC countries remain divided over timetable for new climate report
The climate science organisation is trying to agree a publication timetable for its seventh assessment report in Addis Ababa.
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Countries participating in the IPCC climate panel have yet to agree when the next major series of climate reports should be published. The meeting in Addis Ababa runs until Friday inclusive and is seen as an important attempt to break the deadlock over the timetable.
The IPCC’s 195 member states are discussing the timetable for its seventh assessment report, AR7, this week. The report consists of contributions on the physical science basis of climate change, impacts and adaptation, and measures to limit emissions.
The conflict is not about a single new scientific measurement, but about the order and timing of the reports. A group of countries wants the publications to be available in time for the global evaluation of climate policy, which is due to be completed in 2028.
Other countries believe the timetable puts too much pressure on researchers and governments with fewer resources. They want more time for participation, review and translation. According to Reuters, a publication timetable has already been under discussion for almost three years.
The IPCC previously reported that the three working groups were working on their first drafts. Experts’ review of the first draft by the working group on physical climate science ran from August to early October. This does not mean that a final report or new policy conclusion is already in place.
The outcome of the meeting will primarily determine when policymakers receive new, internationally agreed summaries. A delay could mean that countries work with older reports during the 2028 climate negotiations. An overly tight timetable could, in turn, limit the participation of scientists from poorer countries.
The meeting had not yet concluded on Thursday. The precise end date of AR7 and of the individual working-group reports therefore remains uncertain. The IPCC emphasises that its reports are scientific assessments; governments do, however, negotiate the timetable and the wording of summaries for policymakers.
One story, several perspectives
What is established
- The IPCC is working on its seventh assessment cycle.
- The 65th plenary meeting is discussing the timetable for the three working-group reports.
- Countries differ over the preferred publication date and the time needed for participation.
- On 15 October, no definitive timetable had been established in the sources consulted.
Left
Arguments The reports should be made available as quickly as possible, because delay could weaken the urgency of climate policy and vulnerable countries are affected most by delays.
Values Climate justice, protection of vulnerable groups and swift public accountability.
Consequences A tight timetable could better inform policy, but requires additional funding so that scientists from all regions can participate.
Centre
Arguments Reliability and inclusiveness are prerequisites for legitimacy. The best compromise is a feasible timetable with clear interim outputs and support for countries with less capacity.
Values Scientific quality, transparency and institutional trust.
Consequences Phased publication could provide useful knowledge in time without rushing the full assessment process.
Right
Arguments Governments should not be constrained by a politically desired deadline for a scientific process. Countries facing development backlogs should be given sufficient time and allowed to determine their own policy choices.
Values National policy space, economic development and restraint regarding international bureaucracy.
Consequences More time could improve quality and participation, but makes it more likely that negotiators in 2028 will lack an up-to-date joint assessment.
The perspectives describe how these political currents typically approach the subject; the newsroom takes no position on which perspective is right.
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The timetable, the meeting and the substance of the deadlock have been confirmed by the IPCC and independent climate reporting. The text makes no claims about a definitive decision that has not yet been taken.
- confirmed The IPCC is discussing the AR7 timetable in Addis Ababa in October 2026. — Mentioned in the IPCC calendar and the agenda for the 65th session. source
- confirmed The IPCC has 195 member states. — Mentioned in reporting on IPCC-65. source
- confirmed The first expert review of the AR7 report on physical climate science ran from August to early October 2026. — Announced by the IPCC. source
- confirmed There has already been almost three years of discussion about the AR7 timetable. — Reuters describes the prolonged deadlock and the differing positions. source
Editor's note
The scientific content of AR7 is not the current point of conflict; the issue is the timetable and political approval. The IPCC meeting had not concluded on 15 October, so no definitive outcome is available.Sources
- 2026 — IPCC — Intergovernmental Panel on Climate Change
- Inside the deadlock at the world's top climate science body — Reuters via MarketScreener
- 65th Session of the IPCC — IISD Earth Negotiations Bulletin
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