AR5 Synthesis Report: Climate Change 2014

The Synthesis Report (SYR) of the IPCC Fifth Assessment Report (AR5) provides an overview of the state of knowledge concerning the science of climate change, emphasizing new results since the publication of the IPCC Fourth Assessment Report (AR4) in 2007.

Headline Statements

Observed Changes and their Causes

Human influence on the climate system is clear, and recent anthropogenic emissions of greenhouse gases are the highest in history. Recent climate changes have had widespread impacts on human and natural systems.

Future Climate Changes, Risks and Impacts

Continued emission of greenhouse gases will cause further warming and long-lasting changes in all components of the climate system, increasing the likelihood of severe, pervasive and irreversible impacts for people and ecosystems. Limiting climate change would require substantial and sustained reductions in greenhouse gas emissions which, together with adaptation, can limit climate change risks.

Future Pathways for Adaptation, Mitigation and Sustainable Development

Adaptation and mitigation are complementary strategies for reducing and managing the risks of climate change. Substantial emissions reductions over the next few decades can reduce climate risks in the 21st century and beyond, increase prospects for effective adaptation, reduce the costs and challenges of mitigation in the longer term, and contribute to climate-resilient pathways for sustainable development.

Adaptation and Mitigation

Many adaptation and mitigation options can help address climate change, but no single option is sufficient by itself. Effective implementation depends on policies and cooperation at all scales, and can be enhanced through integrated responses that link adaptation and mitigation with other societal objectives.

Report

This Synthesis Report is based on the reports of the three Working Groups of the Intergovernmental Panel on Climate Change (IPCC), including relevant Special Reports. It provides an integrated view of climate change as the final part of the IPCC’s Fifth Assessment Report (AR5).

When quoting, citing or distributing the Synthesis Report, its Statement for Policymakers (SPM) or its individual sections, please provide the full reference: IPCC, 2014: Climate Change 2014: Synthesis Report. Contribution of Working Groups I, II and III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Core Writing Team, R.K. Pachauri and L.A. Meyer (eds.)]. IPCC, Geneva, Switzerland, 151 pp.

 
AR5 Synthesis Report
 
Front Matter
 
Summary for Policymakers
 
Annexes and Index
 
 

Synthesis Report in UN and Other Languages

Translation of the AR5 Synthesis Report from English into the other five official languages of the United Nations is being done by translators working for the WMO Language, Conference and Publishing Services Department.

 
AR5: SYR English
 
AR5 SYR: Arabic
 
AR5 SYR: Chinese
 
AR5 SYR: French
 
AR5 SYR: Russian
 
AR5 SYR: Spanish

A number of countries are undertaking translations of the AR5 Synthesis Report into languages that are not official languages of the United Nations. IPCC welcomes these initiatives but would note that the translations are prepared under the responsibility of the respective country or institutions. The IPCC does not assume any responsibility for the accuracy of these translations into non-UN languages. In working to achieve the widest possible dissemination of IPCC knowledge, the IPCC is pleased to assist in making these translations available.

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AR5 SYR: German
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AR5 SYR: Korean

SPM in UN and Other Languages

 
SPM: English
 
SPM: Arabic
 
SPM: Chinese
 
SPM: French
 
SPM: Russian
 
SPM: Spanish

A number of countries are undertaking translations of the SPMs into languages that are not official languages of the United Nations. IPCC welcomes these initiatives but would note that the translations are prepared under the responsibility of the respective country or institutions. The IPCC does not assume any responsibility for the accuracy of these translations into non-UN languages. In working to achieve the widest possible dissemination of IPCC knowledge, the IPCC is pleased to assist in making these translations available.

1
SPM: Catalan
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SPM: Hungarian
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SPM: Korean

Headline Statements in UN Languages

 
Headline Statement: English
 
Headline Statement: Arabic
 
Headline Statement: Chinese
 
Headline Statement: French
 
Headline Statement: Russian
 
Headline Statement: Spanish

Multimedia

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