Drafts and Review Materials

The development process of the WGI AR5 included multiple stages of drafting and review. As a record of the report preparation, this page provides access to the drafts submitted at the time of the First Order Draft Expert Review and the Second Order Draft Expert and Government Review, the expert and government review comments received, and the author responses to those review comments. In addition, the Final Draft Summary for Policymakers and the government comments submitted in advance of the Twelfth Session of Working Group I are available. Please note that the Summary for Policymakers and the Technical Summary First Order Drafts are submitted for expert and government review with the Second Order Draft chapters.

Review Editor reports prepared for the Twelfth Session of Working Group I are provided below.

WGI AR5 Summary for Policymakers

Title First Order Draft Final Draft
Draft Comments and Responses Draft Comments
Summary for Policymakers


WGI AR5 Technical Summary, Chapters and Annexes

Ch Title

First Order Draft

Second Order Draft

Draft Comments and Responses Draft Comments and Responses
  General comments on the entire report - -
  Technical Summary -
1 Introduction
2 Observations: Atmosphere and Surface
3 Observations: Ocean
4 Observations: Cryosphere
5 Information from Paleoclimate Archives
6 Carbon and Other Biogeochemical Cycles
7 Clouds and Aerosols
8 Anthropogenic and Natural Radiative Forcing
9 Evaluation of Climate Models
10 Detection and Attribution of Climate Change: from Global to Regional
11 Near-term Climate Change: Projections and Predictability
12 Long-term Climate Change: Projections, Commitments and Irreversibility
13 Sea Level Change
14 Climate Phenomena and their Relevance for Future Regional Climate Change
  Annex I: Atlas of Global and Regional Climate Projections

Review Editor Reports

In accordance with the IPCC Procedures, the WGI AR5 Review Editors submitted their written reports to the WGI Co-Chairs prior to the 12th Session of Working Group I. Upon request of the delegates, these reports were distributed to the participants at WGI-12 and a compiled document was made available on the meeting participant website. The Review Editors' reports compiled here are those distributed to the participants at WGI-12, except that the personal names of individuals not connected with IPCC WGI AR5 have been redacted and signatures have been removed for data protection reasons.

The role of the Review Editors in an IPCC assessment is to ensure that all substantive comments received during the review of the First Order and Second Order Drafts are given appropriate consideration by the author teams and to ensure that diversity in perspectives in the literature is reflected adequately in the report. The Review Editors’ reports are provided to the Panel through the Working Group Co-Chairs to document this process. They are thus part of the quality control of the review process of the assessment. They are not intended to be additional reviews of the content of the drafts of the assessment report.

Title PDF
Review Editor Reports 210kB

WGI AR5 Approved Summary for Policymakers and Accepted Final Draft

The approved Summary for Policymakers (version 27 September) and the accepted Final Draft of the underlying report (version 7 June) are available here.