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The IPCC: how its climate assessment reports are made

By CAShorts DeskPublished Updated Source: IPCC (media advisory, 9 Oct 2026; About, Structure, Procedures and AR7 pages); The Hindu (12 Oct 2026); Carbon Brief (1 Apr 2026, on the 64th Session)

Why in news: The IPCC's 65th Session opens in Addis Ababa on 12 October 2026, with members still divided over when the AR7 reports are due.

The IPCC: how its climate assessment reports are made
Illustration (AI-generated)

The Intergovernmental Panel on Climate Change, set up in 1988 by the World Meteorological Organization and UNEP, assesses published climate science for governments through three Working Groups and a Task Force. It does no research itself, and governments approve its summaries. Its 65th Session opens in Addis Ababa on 12 October 2026, with members split over the AR7 timeline.

Syllabus: Prelims · Current Affairs & IR; Prelims · Environment & Ecology; GS3 · Environment & Conservation

In short

The Intergovernmental Panel on Climate Change (IPCC), set up in 1988 by the WMO and UNEP, assesses published climate science for governments, which also approve its summaries.

How an IPCC report is madeGovernmentsandobservers nominateWorkingGroup BureauselectsExpertsreview FirstOrder DraftGovernments,expertsreview Second Order DraftSummaryapprovedline by line

The IPCC's authority rests on being both rigorous and inclusive; AR7 must reach governments in time without sidelining developing-country scientists.

Why it matters

Every country's climate target, and the finance debate behind it, leans on IPCC findings. If the AR7 reports arrive after the 2028 Global Stocktake, governments will judge their progress and set new national goals on older science, including on how far some warming might be reversible. If the reports are rushed, developing countries argue, fewer of their scientists can take part, since some do unpaid IPCC work beside their regular jobs and struggle to publish in time. India's representative at the IPCC says equity issues are in some instances "simply ducked". The larger question is who shapes global climate science, and whether its calendar should follow the negotiations or the science.

Prelims pointers

  • Parent bodies: the WMO and UNEP (1988), not the UNFCCC, which was adopted in 1992 and uses IPCC reports in its negotiations.
  • Summary for Policymakers: approved line by line by member governments in plenary; the underlying report is accepted, not approved line by line.
  • Membership: open to all member countries of the UN and the WMO; the Panel meets at least once a year and decides by consensus.
  • Authors: unpaid volunteers nominated by governments and observer organizations, selected by the Working Group Bureau; usually two Coordinating Lead Authors per chapter, one each from developing and developed countries.
  • Global Stocktake: Article 14 of the Paris Agreement; every five years; designed to inform the Nationally Determined Contributions countries submit.
  • Secretariat: Geneva, in the WMO building; the IPCC Trust Fund, which supports developing-country experts, runs under the WMO's Financial Regulations.
  • Report types: Assessment, Synthesis, Special and Methodology Reports; their procedures are Appendix A to the Principles Governing IPCC Work, first adopted in 1999.

Practise a UPSC-style question

With reference to the Intergovernmental Panel on Climate Change (IPCC), consider the following statements:

1. The IPCC was established in 1988 by the World Meteorological Organization and the UNFCCC secretariat.

2. The IPCC does not conduct original research; it assesses scientific literature already published.

Which of the statements given above is/are correct?

  1. (a) 1 only
  2. (b) 2 only
  3. (c) Both 1 and 2
  4. (d) Neither 1 nor 2
Show the answer

Answer: (b) 2 only

1 is incorrect: the IPCC was established in 1988 by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP); the UNFCCC was adopted only in 1992. 2 is correct: the IPCC does no research of its own; volunteer authors assess thousands of published papers each year.

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