The Intergovernmental Panel on Climate Change

The Intergovernmental Panel on Climate Change (IPCC) is the United Nations body for assessing the science related to climate change.

Latest

Global Warming of 1.5°C — 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 Read more

The IPCC at COP24 — GENEVA, Nov 27 - The Intergovernmental Panel on Climate Change IPCC will be present at the Katowice Climate Change Conference (COP24) in Poland on 2-14 December 2018, with a broad programme of its own events as well as taking part Read more

Registration for review of IPCC methodology report second draft opens — GENEVA, June 18 - Registration is now open to review the second order draft of the 2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories (2019 Refinement). The 2019 Refinement is an update to the guidelines or methodologies that countries use to Read more

The IPCC was created to provide policymakers with regular scientific assessments on climate change, its implications and potential future risks, as well as to put forward adaptation and mitigation options.

Through its assessments, the IPCC determines the state of knowledge on climate change. It identifies where there is agreement in the scientific community on topics related to climate change, and where further research is needed. The reports are drafted and reviewed in several stages, thus guaranteeing objectivity and transparency.  The IPCC does not conduct its own research.

IPCC reports are neutral, policy-relevant but not policy-prescriptive.  The assessment reports are a key input into the international negotiations to tackle climate change. Created by the United Nations Environment Programme (UN Environment) and the World Meteorological Organization (WMO) in 1988, the IPCC  has 195 members.

Reports

The IPCC prepares comprehensive Assessment Reports about the state of scientific, technical and socio-economic knowledge on climate change, its impacts and future risks, and options for reducing the rate at which climate change is taking place. It also produces Special Reports on topics agreed to by its member governments, as well as Methodology Reports that provide guidelines for the preparation of greenhouse gas inventories. Learn more about the reports here.

 

Latest and Upcoming Report

Special Report

Global Warming of 1.5°C

October 2018

TFI Report

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

May 2019

Special Report

Climate Change and Land

August 2019

Special Report

The Ocean and Cryosphere in a Changing Climate

September 2019

Sixth Assessment Report: 2022

Synthesis Report

AR6 Synthesis Report: Climate Change 2022

June 2022

WG II Report

AR6 Climate Change 2021: Impacts, Adaptation and Vulnerability

October 2021

WG III Report

AR6 Climate Change 2021: Mitigation of Climate Change

July 2021

WG I Report

AR6 Climate Change 2021: The Physical Science Basis

April 2021

Fifth Assessment Report: 2014

Synthesis Report

AR5 Synthesis Report: Climate Change 2014

October 2014

WG I Report

AR5 Climate Change 2013: The Physical Science Basis

September 2013

WG II Report

AR5 Climate Change 2014: Impacts, Adaptation, and Vulnerability

March 2014

WG III Report

AR5 Climate Change 2014: Mitigation of Climate Change

April 2014

Fourth Assessment Report: 2007

Synthesis Report

AR4 Climate Change 2007: Synthesis Report

September 2007

WG I Report

AR4 Climate Change 2007: The Physical Science Basis

June 2007

WG II Report

AR4 Climate Change 2007: Impacts, Adaptation, and Vulnerability

July 2007

WG III Report

AR4 Climate Change 2007: Mitigation of Climate Change

June 2007

Third Assessment Report: 2001

Synthesis Report

TAR Climate Change 2001: Synthesis Report

October 2001

WG I Report

TAR Climate Change 2001: The Scientific Basis

January 2001

WG II Report

TAR Climate Change 2001: Impacts, Adaptation, and Vulnerability

May 2001

WG III Report

TAR Climate Change 2001: Mitigation

July 2001

Second Assessment Report: 1995

Synthesis Report

AR2: Synthesis Report

October 1995

WG III Report

IPCC Second Assessment Full Report

June 1996

WG I Report

AR2: The Science of Climate Change

February 1995

WG II Report

AR2: Impacts, Adaptations and Mitigation of Climate Change: Scientific-Technical Analyses

July 1995

First Assessment Report: 1990

Synthesis Report

AR1: Synthesis

March 1990

WG I Report

AR1: Scientific Assessment of Climate Change

June 1990

WG II Report

AR1: Impacts Assessment of Climate Change

July 1990

WG III Report

AR1: The IPCC Response Strategies

October 1990

Special Report

Special Report

Global Warming of 1.5°C

October 2018

Special Report

Aviation and the Global Atmosphere

March 1999

Special Report

Climate Change 1994: Radiative Forcing of Climate Change and An Evaluation of the IPCC IS92 Emission Scenarios

March 1994

Special Report

Climate Change and Land

August 2019

Methodology Report

TFI Report

1994 IPCC Guidelines for National Greenhouse Gas Inventories

May 1994

TFI Report

2006 IPCC Guidelines for National Greenhouse Gas Inventories

May 2006

TFI Report

IPCC Guidelines for National Greenhouse Gas Inventories

May 1994

Activities

The main activity of the IPCC is the preparation of reports assessing the state of knowledge of climate change. These include assessment reports, special reports and methodology reports. To deliver this work programme, the IPCC holds meetings of its government representatives, convening as plenary sessions of the Panel or IPCC Working Groups to approve, adopt and accept reports. Plenary Sessions of the IPCC also determine the IPCC work programme, and other business including its budget and outlines of reports. The IPCC Bureau meets regularly to provide guidance to the Panel on scientific and technical aspects of its work.

The IPCC organizes scoping meetings of experts and meetings of lead authors to prepare reports. It organizes expert meetings and workshops on various topics to support its work programme, and publishes the proceedings of these meetings.  To communicate its findings and explain its work, the IPCC takes part in outreach activities organized by the IPCC or hosted by other organizations, and provides speakers to other conferences.

More information on sessions of the IPCC, its Working Groups and the Bureau can be found in the Documentation section.

 
Lead Author Meetings

First Lead Author Meeting of the IPCC Working Group III Sixth Assessment Report

From 1 to 5 April 2019, IPCC Working Group III will organise the First Lead Author Meeting in Edinburgh, Scotland

April 1, 2019
Lead Author Meetings

Fourth Lead Author Meeting for Special Report on Climate Change and Land

From 11 to 16 February 2019, IPCC Working Group III will organise the Fourth Lead Author Meeting in Cali, Colombia

February 11, 2019
Event

Second Lead Author Meeting of the IPCC Working Group I Sixth Assessment Report

From 7 to 11 January 2019, IPCC Working Group I will organise the Second Lead Author Meeting of the Sixth …

January 7, 2019
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Working Groups and Task Force

IPCC assessments and special reports are prepared by three Working Groups, each looking at a different aspect of the science related to climate change: Working Group I (The Physical Science Basis), Working Group II (Impacts, Adaptation and Vulnerability), and Working Group III (Mitigation of Climate Change). The IPCC also has a Task Force on National Greenhouse Gas Inventories, whose main objective is to develop and refine a methodology for the calculation and reporting of national greenhouse gas emissions and removals.

The Working Groups and Task Force handle the preparation of reports, selecting and managing the experts that work on them as authors.

The activities of each Working Group and the Task Force are supported by their Technical Support Units (TSU).

 

Working Group I

The IPCC Working Group I (WGI) aims at assessing the physical scientific basis of the climate system and climate change.

August 2017

Working Group II

The IPCC Working Group II (WGII) assesses the vulnerability of socio-economic and natural systems to climate change, negative and positive …

January 2018

Working Group III

The IPCC Working Group III (WG III) assesses options for mitigating climate change through limiting or preventing greenhouse gas emissions …

August 2017

TFI

The Task Force on National Greenhouse Gas Inventories (TFI) was established by the IPCC to oversee the IPCC National Greenhouse …

November 2016