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 provides regular assessments of the scientific basis of climate change, its impacts and future risks, and options for adaptation and mitigation.

Created in 1988 by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP), the objective of the IPCC is to provide governments at all levels with scientific information that they can use to develop climate policies. IPCC reports are also a key input into international climate change negotiations. The IPCC is open to all members of the United Nations or WMO and currently has 195 member states.

The IPCC does not conduct its own research. 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. IPCC reports are policy-relevant but not policy-prescriptive. They are drafted and reviewed in several stages, guaranteeing objectivity and transparency.

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 by its member governments, as well as Methodology Reports that provide guidelines for the preparation of greenhouse gas inventories. Learn more about reports here.

 

Latest and Upcoming Report

Special Report

Global Warming of 1.5°C

October 2018

Working Group Report

Special Report on the Ocean and Cryosphere in a Changing Climate

September 2019

Working Group Report

Climate Change and Land

November 2019

Special Report

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

May 2019

Sixth Assessment Report: 2022

Working Group Report

Climate Change 2021: The Physical Science Basis

April 2021

Working Group Report

Climate Change 2021: Impacts, Adaptation and Vulneralbility

October 2021

Working Group Report

Climate Change 2021: Mitigation of Climate Change

July 2021

Fifth Assessment Report: 2014

Synthesis Report

AR5 Synthesis Report: Climate Change 2014

October 2014

Working Group Report

AR5 Climate Change 2013: The Physical Science Basis

September 2013

Working Group Report

AR5 Climate Change 2014: Impacts, Adaptation, and Vulnerability

March 2014

Working Group 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

Working Group Report

AR4 Climate Change 2007: The Physical Science Basis

June 2007

Working Group Report

AR4 Climate Change 2007: Impacts, Adaptation, and Vulnerability

July 2007

Working Group Report

AR4 Climate Change 2007: Mitigation of Climate Change

June 2007

Third Assessment Report

Synthesis Report

TAR Climate Change 2001: Synthesis Report

October 2001

Working Group Report

TAR Climate Change 2001: The Scientific Basis

January 2001

Working Group Report

TAR Climate Change 2001: Impacts, Adaptation, and Vulnerability

May 2001

Working Group Report

TAR Climate Change 2001: Mitigation

July 2001

Second Assessment Report: 1995

Synthesis Report

AR2: Synthesis Report

October 1995

Working Group Report

IPCC Second Assessment Full Report

June 1996

Working Group Report

AR2: The Science of Climate Change

February 1995

Working Group Report

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

July 1995

First Assessment Report: 1990

Synthesis Report

AR1: Synthesis

March 1990

Working Group Report

AR1: Scientific Assessment of Climate Change

June 1990

Working Group Report

AR1: Impacts Assessment of Climate Change

July 1990

Working Group Report

AR1: The IPCC Response Strategies

October 1990

Special Report

Special Report

Global Warming of 1.5°C

October 2018

Working Group Report

Special Report on the Ocean and Cryosphere in a Changing Climate

September 2019

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

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 agree the IPCC work programme, and other business including its budget, and agree the 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

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

From 14 to 19 July 2019, IPCC Working Group II will organise the Second Lead Author Meeting of the Sixth …

July 14, 2019
Lead Author Meetings

Fourth Lead Author Meeting for Special Report on the Ocean and Cryosphere in a Changing Climate

From 4 to 9 March 2019, IPCC Working Group II will organise the Fourth Lead Author Meeting of the Special …

March 4, 2019
Lead Author Meetings

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

From 21 to 25 January 2019, IPCC Working Group II will organise the First Lead Author Meeting of the Sixth …

January 21, 2019
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Working Groups and Task Force

IPCC assessment 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 (WG I) aims at assessing the physical scientific basis of the climate system and climate …

August 2017

Working Group II

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

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