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Fifth Assessment Report (AR5) |
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Climate Change 2013: Impacts, Adaptation, and Vulnerability |
The outline of the Working Group II contribution to the IPCC Fifth Assessment Report (AR5) can be found here. According to the timetable agreed by the IPCC at its 31st Session in Bali, Indonesia, in October 2009, the Working Group II contribution to the AR5, "Climate Change 2013: Impacts, Adaptation, and Vulnerability", will be released in March 2014.
Click here for key WGII AR5 development milestones.
| Fifth Assessment Report (AR5) Writing Team Selection |
Author teams have been finalized for the Working Group II contribution to the Fifth Assessment Report. To view a complete list of the confirmed writing team members and their roles, click here. This is the first step in a 4-year drafting process, with the Working Group II volumes scheduled for completion in March 2014. The provisional schedule can be found here.
The Working Group II Bureau employed a very deliberate process to evaluate the 1,208 nominations received in response to the Call to Governments and Observer Organizations issued via the IPCC Secretariat. Thorough reviews of all CVs — plus input from IPCC Focal Points, observer organization representatives, and senior leaders in climate science — provided the basis for Working Group II Bureau decisions presented at the 41st Session of the IPCC Bureau (19-20 May 2010 • Geneva, Switzerland). Given the volume of interested scientists and researchers, it was impossible to accommodate all the qualified experts nominated as Coordinating Lead Authors (CLA), Lead Authors (LA), and Review Editors (RE). The Working Group II Bureau pursued two CLAs (usually one developing country / economy-in-transition and one developed country representative), six LAs, and two REs per chapter. The Working Group II Bureau conducted its evaluation of the nominations pool following relevant IPCC Procedures. Further information on CLA/LA/RE responsibilities can be found in Annex I of the Procedures and in the short description here.
While identifying writing teams of the highest scientific merit, the Working Group II Bureau also considered the following guiding principles when evaluating and ranking nominations: (i) appropriate expertise to address effectively the plenary approved outline (PAO); (ii) representation of the full range of scientific opinion; (iii) no repeat CLA pairs from the Fourth Assessment Report (AR4), in pursuit of fresh insights; (iv) at least 40% developing country / economy-in-transition representation; (v) improved gender balance; (vi) target of 50% "new" authors not directly involved in the AR4 cycle in a substantive role; (vii) target of 20% "young scientist" involvement (i.e., having obtained highest degree within the past 10 years) to ensure experienced authors for future assessments; and (viii) assignment of senior, experienced scientists for CLA and RE positions.
In many cases, writing team members classified as "new" do have a history with the IPCC — as Contributing Authors or Expert Reviewers on the Working Group II contribution to the AR4; as CLA/LA/REs on either of the other two Working Group contributions to the AR4 or its Synthesis Report; as writing team members on previous or ongoing IPCC Special Reports; or as CLA/LA/REs on previous IPCC assessments, such as the Third Assessment Report (TAR). The PAO does contain chapter topics never broached before (e.g., open oceans), places additional emphasis on adaptation (four chapters), and integrates issues that had not traditionally been within the scope of Working Group II (e.g., economics of adaptation). As such, new communities were recruited and engaged.
The Working Group II AR5 First Lead Authors Meeting is scheduled for 11-14 January 2011, in Tsukuba, Japan. Production milestones have been staggered to optimize the flow of information between Working Groups, to avoid review period overlaps, and to stage approval plenary sessions for the respective AR5 contributions. Prior to the Working Group II AR5 First Lead Authors Meeting, writing teams will be encouraged to develop full chapter outlines, to plan writing assignments, to initiate preliminary literature reviews, and to explore cross-cutting issues related to other chapters — facilitated by the Working Group II Technical Support Unit.
Click here for key Working Group II development milestones.
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| Call for Author Nominations |
On 15 January 2010, IPCC Focal Points and Observer Organizations were invited to nominate experts as authors and review editors for the three Working Group contributions to the AR5. The nominations period closed on 12 March 2010, but for historical purposes the instructions can be found here (all embedded links to the nominations system disabled). The selection of authors and review editors will be made by the IPCC Bureau, in accordance with the IPCC procedures.
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| Scoping Process |
A scoping meeting was held 13-17 July 2009 in Venice, Italy. Participants included 209 invited scientific experts in relevant disciplines, selected stakeholders, and members of the IPCC Secretariat and Working Group TSUs. Further information about the meeting, as well as meeting documents and background information can be found here. A full list of participants can be found here.
The outlines developed at the scoping meeting were circulated to IPCC Focal Points and Observer Organizations for comment. During its 9th Session (26-27 October 2009), the IPCC WGII finalized and approved the chapter outlines of the WGII contribution to the AR5. The WGII outline (html or PDF) was then accepted at the 31st Session of the IPCC on 29 October 2009 in Bali, Indonesia.
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Fifth Assessment Report (AR5)
Writing Team Composition
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A total of 1,208 nominations were submitted by IPCC Focal Points, observer organization representatives, and Working Group II Bureau members in response to the Call issued 15 January 2010. A total of 78 Governments submitted nominations, and 90 nationalities were represented in the candidate pool. The Working Group II Bureau selected the writing teams, which were then presented to the 41st Session of the IPCC Bureau (19-20 May 2010), for endorsement by attending Government delegates. Click here to see the 302 confirmed writing team members, consisting of 61 Coordinating Lead Authors (CLAs), 179 Lead Authors (LAs), and 62 Review Editors (REs). The Working Group II Bureau is confident that it has met its goal of identifying writing teams of the highest scientific merit — capturing the needed range of institutional and disciplinary perspective — while ensuring requisite regional and gender balance, and involving the next generation of climate scientists.
| The IPCC WGII AR5 |
Summary Statistics |
| Total Number of Confirmed Writing Team Members: 302 |
| Total Number of Nationalities Represented on Writing Teams: 71 |
| Developing Country and Economy-in-Transition Writing Team Members: 124 (41%) |
| Female Writing Team Members: 83 (27%) |
| Writing Team Members New to the IPCC Process: 200 (66%) |
| Young Scientists Engaged in the Process: 71 (24%) |
- "New" connotes an expert not engaged in the AR4 in a CLA/LA/RE role.
- "Young" connotes an individual who obtained highest degree in 2001 or later.
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