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IPCC Sixth Assessment Report (AR6)

The Sixth Assessment Report (AR6) comprises three Working Group contributions: Working Group I (the physical science basis), Working Group II (impacts, adaptation and vulnerability) and Working Group III (mitigation) and a Synthesis Report.

The Synthesis Report integrates the three Working Group reports as well as the findings from the three cross-Working Group Special Reports prepared during this assessment cycle: Special Report on Global Warming of 1.5ºC (SR15, October 2018), Special Report on Climate Change and Land (SRCCL, August 2019) and Special Report on the Ocean and Cryosphere in a Changing Climate (SROCC, September 2019).

During the AR6 cycle the IPCC also updated its methodologies with the 2019 Refinement to the 2006 Guidelines on National Greenhouse Gas Inventories (May 2019).

Video "What is IPCC's Sixth Assessment Report?": https://www.youtube.com/watch?v=yzmTNoiOtiY

Synthesis report SYR
comprised of
Working group reports			Special reports
WGI	WGII	WGIII	SR1.5	SRCCL	SROCC

Assessment cycles

Comprehensive scientific assessment reports are published every 5 to 7 years. The IPCC is currently in its seventh assessment cycle.

Timeline Assessment cycle 6
October 2015	Start of the 6th assessment cycle.
May 2017	Initial scoping meeting for AR6 reports.
2018–2019	Special Reports produced (Global Warming of 1.5°C, Land, Ocean/Cryosphere).
August 9, 2021	Working Group I (Physical Science) released.
February 28, 2022	Working Group II (Impacts/Adaptation) released.
April 4, 2022	Working Group III (Mitigation) released.
March 20, 2023	Synthesis Report (SYR) released, summarizing the entire cycle.
July 2023	Conclusion of the AR6 cycle and start of the 7th cycle.

Report parts explanation

SPM

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TS

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Chapter

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Annex

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