Special Report on Extreme Events

Managing the Risks of Extreme Events and Disasters to Advance Climate Change Adaptation (SREX)
At its 38th session (24-25 November 2008 Geneva, Switzerland), the IPCC Bureau decided to conduct a scoping meeting, to provide support for a future decision on whether to endorse the Special Report. The Bureau requested that the meeting produce a scoping paper describing process, objectives, and an annotated outline. The outcome of the meeting provided guidance to the 39th session of the Bureau and the 30th session of the IPCC (20-23 April 2009 Antalya, Turkey), where it was decided to prepare the Special Report, following IPCC procedures (92KB) and with the involvement of the UN International Strategy for Disaster Reduction (ISDR).
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Information and Documents

16-19 May, 2011

Gold Coast, Australia


25-28 October 2010

Geneva, Switzerland


22-25 March 2010

Hanoi, Vietnam


9-12 November 2009

Panama City, Panama

Scoping Meeting Materials

23-26 March 2009

Oslo, Norway

Review Process
The IPCC depends heavily on scientific reviews by independent experts. Experts play a key role in identifying the key literature, ensuring a balanced interpretation, and placing topics in context. Expert review comments - each of which is considered in detail by chapter author teams assisted by review editors - form an essential foundation for a successful IPCC report. The SREX Expert Review took place 26 July - 20 September 2010, with 629 targeted experts solicited to participate. With active engagement of IPCC Focal Points, the solicited reviewers list expanded from 665 to 857 subscribers, and ultimately 453 accepted registrants. This approach culminated in 220 sets of submitted comments, which served as basis for discussions at the Third Lead Authors Meeting held in Geneva, Switzerland (25-28 October 2010).

The SREX Government and Expert Review took place 7 February - 1 April 2011, providing the following categories of users the opportunity to comment on the second-order draft chapters and the first-order draft of the Summary for Policymakers (SPM):
  • Government Focal Points
  • Observer Organizations representatives
  • Expert reviewers of the first-order draft chapters
  • Unsolicited experts requesting to participate in the SREX Government and Expert Review.

The comments collected as part of the SREX Government and Expert Review served as basis for deliberations at the Fourth Lead Authors Meeting, held in Gold Coast, Australia, from 16-19 May 2011.

In accordance with Article 4.1 of Appendix A to the Principles Governing IPCC Work, all comments collected – complete with author annotations of disposition – will be posted on the Working Group II web site following the final approval and publication of the Special Report. Expert Review comments will be associated with the names of the people who provided them and with the responses from the relevant writing teams. For the Government and Expert Review, the same approach is taken for individual experts; however, IPCC Focal Point and Observer Organization comments are attributed to the submitting Government and institution, respectively.
Lead Authors Meetings (LAMs)
The Smithsonian Tropical Research Institute hosted the First Lead Authors Meeting (LAM1) in Panama City, Panama, 9-12 November 2009. The Vietnam National University, Hanoi, with financial support from the Government of Norway, hosted the Second Lead Authors Meeting (LAM2) in Hanoi, Vietnam, 22-25 March 2010. As is IPCC practice, only Coordinating Lead Authors and Lead Authors attended these first two meetings, with Review Editors joining the process just prior to the Expert Review. All writing team members then attended the Third Lead Authors Meeting (LAM3), held at the World Meteorological Organization (WMO) Headquarters in Geneva, Switzerland, 25-28 October 2010. The Fourth Lead Authors Meeting (LAM4) was hosted by the National Climate Change Adaptation Research Facility of Griffith University (Gold Coast, Australia), from 16-19 May 2011.

See the provisional schedule for more detail.
Call for Author Nominations (completed 27 July 2009)
A decision was taken at the 30th session of the IPCC (21-23 April 2009 Antalya, Turkey) to undertake the Special Report, following IPCC procedures (92KB) and with the involvement of the UN International Strategy for Disaster Reduction (ISDR). Slight modifications were made to the approved outline of the report.
A call for Lead Author and Review Editor nominations was issued to Governments and Observer Organizations on 25 May 2009, with nominations packages accepted through 27 July 2009. A Science Steering Group was convened to evaluate Government and Observer Organization inputs to achieve the necessary disciplinary, gender, and regional balance required to undertake a comprehensive assessment. Authors and review editors were notified of their appointments on 10 September 2009.
Scoping Meeting (23-26 March 2009 Oslo, Norway)
At its 38th session (24-25 November 2008 Geneva, Switzerland), the IPCC Bureau requested that Working Group II take the lead on organizing a scoping meeting. A call for expert nominations (84KB) was issued to Governments and Observer Organizations on 8 December 2008, and a Science Steering Group assembled to evaluate submissions, identify gaps, recommend additional candidates, and assemble the most noted experts in the field to invite to the scoping meeting.
The principal objectives of the scoping meeting were to foster collaboration and discussions between climate science researchers spanning all three IPCC working groups (science, impacts, adaptation, mitigation) and colleagues in the disaster preparedness and risk management communities. After securing needed context on the first day, subsequent days were devoted to plenary and breakout groups to develop a structure for the proposed Special Report and an annotated outline, using the Norwegian proposal as a starting point.
Refer to the following documents/links for more information regarding conduct and findings of the meeting: