Climate Change 2013/2014: Fifth Assessment Report

IIASA scientists and council members are major contributors to the three working groups of the Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report (AR5).

AR5 WG 1 cover

The IPCC 5th Assessment Report (AR5) is being released in 2013 and 2014. It is a comprehensive assessment of the current state of climate science. As the previous reports, it is split up into three working groups that focus on the physical science of climate change (Working Group I), impacts adaptation, and vulnerability (Working Group II), and mitigation (Working Group III). 

IIASA research feeds into all three parts of the report, but in particular, IIASA researchers  are major contributors to Working Groups II and III of the IPCC's 5th Assessment Report, which will  be released in March and April 2014.

The Physical Science Basis Working group I: The Physical Science Basis 

Contributing Authors

Zbigniew Klimont: Ch. 11 - Near Term Climate Change: Projections and Predictability

Joeri Rogelj: Summary for policymakers, Technical summary, Ch. 10 - Detection and Attribution of Climate Change: from Global to Regional, Ch. 12 - Long-term Climate Change: Projections, Commitments and Irreversibility

Review Editors

Peter Lemke (IIASA Council Chair) Ch. 4 – Observations: Cryosphere

Kirit S. Parikh (IIASA Council Member India) Ch. 7 – Energy Systems


Full ReportClimate Change 2013


Working Group II: Impacts, Adaptation, and Vulnerability 

Lead Authors 

Reinhard Mechler: Technical Summary, Ch. 17 – Economics of Adaptation

Review Editors

Pavel Kabat: Ch. 3 - Freshwater Resources

Anthony Patt: Ch. 14 – Adaptation Needs and Options


Working Group III: Mitigation of Climate Change 

Coordinating Lead Authors

Luis Gomez-Echeverri: Glossary

Volker KreyAnnex 2 

Lead Authors

Luis Gomez-Echeverri: Summary for Policymakers, Technical Summary, Ch. 16 – Cross-cutting Investment and Finance Issues

Volker Krey: Ch. 6 – Assessing Transformation Pathways, Technical Summary, Summary for Policy Makers

Wolfgang Lutz: Ch. 4 – Sustainable Development and Equity

David McCollum: Ch. 6 - Assessing Transformation Pathways 

Nebojsa Nakicenovic: Ch. 5 – Drivers, Trends and Mitigation

Anthony Patt: Technical Summary, Ch. 2 – Integrated Risk and Uncertainty Assessment of Climate Change Response Policies

Keywan Riahi:  Summary for Policymakers, Technical Summary, Ch. 7 – Energy Systems

Holger Rogner: Ch. 1 – Introduction

Contributing Authors

Hannes Bottcher: Ch. 2 - Integrated Risk and Uncertainty Assessment of Climate Change Response Policies, Ch. 11 - Agriculture, Forestry and Other Land Uses

Luis Gomez-EcheverriCh. 15 National and Sub-National Policies

Jessica Jewell: Ch. 6 - Assessing Transformation Pathways 

Nils Johnson: Ch. 6 - Assessing Transformation Pathways 

Peter Kolp: Ch. 6 - Assessing Transformation Pathways

Volker Krey: Ch. 9 - Buildings

Holger Rogner: Ch. 7 - Energy Systems

Mathis Rogner: Ch. 5: Drivers, Trends, and Mitigation

Review Editors

Arnulf Gruebler: Ch. 1 – Introduction

Joanne Bayer: Ch. 2 – Integrated Risk and Uncertainty Assessment of Climate Change Response Policies

Climate Change 2014, Synthesis Report

Core Writing Team

Luis Gomez-Echeverri

Keywan Riahi

Extended Core Writing Team

Joeri Rogelj

The Global Energy Assessment

The IIASA initiated Global Energy Assessment will make a major contribution to the IPCC AR5 with 42 GEA Authors selected as authors for the AR5.

Austrian Panel on Climate Change

Nebojsa Nakicenovic: Co-Chair and Co-Organizer




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Last edited: 19 November 2014

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