Sixth Assessment Report cycle

The IPCC is currently in its Sixth Assessment cycle. During this cycle, the Panel will produce three Special Reports, a Methodology Report on national greenhouse gas inventories and the Sixth Assessment Report (AR6).
 
The 43rd Session of the IPCC held in April 2016 agreed that the AR6 Synthesis Report would be finalized in 2022 in time for the first UNFCCC global stocktake when countries will review progress towards their goal of keeping global warming to well below 2 °C while pursuing efforts to limit it to 1.5 °C. The three Working Group contributions to AR6 will be finalized in 2021.
 
The outlines were approved by the Panel at its 46th Session in early September 2017.
Approved outlines of the Working Group contributions to the Sixth Assessment Report
        Working Group I - The Physical Science Basis
        Working Group II - Impacts, Adaptation, and Vulnerability
        Working Group III - Mitigation of Climate Change
Leaflet: The Sixth Assessment cycle



Special Report on Global Warming of 1.5 °C (SR15)

Following the decision of the panel at its 43rd Session to accept the invitation from the UNFCCC, at its 44th Session, the Panel approved the outline of Global Warming of 1.5 °C, an IPCC special report on the impacts of global warming of 1.5 °C above pre-industrial levels and related global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty.
The report will be finalized in October 2018
 
Authors and Review Editors
Outline: Global Warming of 1.5 °C
Schedule
Report page

Special Report on the Ocean and Cryosphere in a Changing Climate (SROCC)

At its 43rd Session (Nairobi, Kenya, 11 - 13 April 2016), the IPCC decided to prepare a special report on climate change and the oceans and the cryosphere. During its 45th Session (Guadalajara, Mexico, 28 - 31 March 2017), the Panel approved the outline of the Special Report on the Ocean and Cryosphere in a Changing Climate to be finalized in September 2019.
 
The Special Report will be developed under the joint scientific leadership of Working Groups I and II with support from the WGII TSU.

 
Authors and Review Editors
Outline: Special Report on the Ocean and Cryosphere in a Changing Climate (SROCC)
Report page

Special Report on Climate Change and Land (SRCCL)

At its 43rd Session (Nairobi, Kenya, 11 - 13 April 2016), the IPCC decided to prepare a special report on climate change, desertification, land degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems. At its 45th Session (Guadalajara, Mexico, 28 - 31 March 2017), the Panel approved the outline of Climate Change and Land: an IPCC special report on climate change, desertification, land degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems. The report will be finalized in September 2019.
 
The Special Report will be developed under the joint scientific leadership of Working Groups I, II and III supported by the WG III TSU.
 
Authors and Review Editors
Outline: Special Report on Climate Change and Land (SRCCL) - (The dates of the 1st Lead Author Meeting have been corrected
     to read 16-20 October 2017)
Report page

2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories

At the 43rd Session of the IPCC in April 2016, the Panel agreed to refine the 2006 IPCC Guidelines for National Greenhouse Gas Inventories, including producing a Methodology Report in order to update and supplement the 2006 IPCC Guidelines. Work on the Guidelines is necessary to update and provide a sound scientific basis for future international climate action especially under the Paris Agreement. This process will result in a Methodology Report which will be used in conjunction with the 2006 IPCC Guidelines. At its 44th Session, the Panel approved the outline for the 2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories.
The Methodology Report will be finalized in May 2019
 
Outline: 2019 Refinement to the 2006 IPCC Guidelines
2019 Refinement Webpage

Fifth Assessment Report (AR5)

AR5: Synthesis Report Working Group I: The Physical Science Basis Working Group II: Impacts, Adaptation and Vulnerability Working Group III: Mitigation of Climate Change

Expert Review of the First Order Draft for the 2019 Refinement

The expert review of the first order draft of the 2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories has started.
 
Details can be found at: http://www.ipcc-nggip.iges.or.jp/home/2019refinement/fod.html.

  • Press release: Registration for review of IPCC methodology report first draft opens.
  • News and outreach

    • Press release: Registration for review of IPCC methodology report first draft
              opens
    • Media advisory: IPCC at COP23
    • Press release: IPCC Special Report on Global Warming of 1.5 °C: Expert Review
              of the First Order Draft and start of the Third Lead Author Meeting

    IPCC at COP23

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    Assessments of climate change by the IPCC, drawing on the work of hundreds of scientists from all over the world, enable policymakers at all levels of government to take sound, evidence-based decisions. They represent extraordinary value as the authors volunteer their time and expertise. The running costs of the Secretariat, including the organization of meetings and travel costs of delegates from developing countries and countries with economies in transition, are covered through the IPCC Trust Fund. [English]

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