IPCC Factsheet: Wetlands Supplement
The 2013 Supplement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories:Wetlands (Wetlands Supplement)1 provides methods for estimating anthropogenic emissions andremovals of greenhouse gases from lands with wet and drained soils, and constructed wetlands
for wastewater treatment. It follows the same approach to estimating emissions and removals as
the 2006 IPCC Guidelines for National Greenhouse Gas Inventories (2006 IPCC Guidelines). The
report has been developed by an international team of authors who were selected by the Bureauof the IPCC Task Force on National Greenhouse Gas Inventories (IPCC TFI) in August andSeptember 2011. It has undergone a multi-stage review process involving expert reviewers andgovernments and will be presented to IPCC member governments for adoption and acceptance2 inOctober 2013.

The Report• 1 Scoping Meeting to outline 7 Chapters • Over 160 nominations from 44 countries• 68 Lead Authors and 15 Review Editors from 29 countries• 22 Contributing Authors from 11 countries • Over 1100 scientific publications cited •The First Order Draft Expert Review• Over 270 individuals registered • 5053 comments from 128 Expert Reviewers •The Second Order Draft Expert and Government Review• Over 240 individuals registered• 3740 comments from 112 Expert Reviewers and 14 Governments •The Final Government Distribution• 347 comments from 14 Governments on the Final Draft •Total Reviews• 9140 comments • 199 Expert Reviewers • 20 Governments •Thirty-Seventh Session of the IPCC (IPCC-37)• 14-18 October 2013, Batumi, Georgia• The Overview Chapter will be adopted section-by-section by up to 195 Governments •12Please visit http://www.ipcc-nggip.iges.or.jp/home/wetlands.html for more information on the Wetlands Supplement.
The Overview Chapter will be adopted on a section-by-section basis while the rest of the report will be accepted.

www.ipcc.ch                                             www.ipcc-nggip.iges.or.jp

The Wetlands Supplement has 7 chapters and an Overview Chapter. The report supplements the 2006 IPCC
Guidelines by filling in gaps in the coverage and providing updated information reflecting scientific advances.
This includes updating default emission factors. It covers inland peatlands and other wetlands on mineralsoils, coastal wetlands including mangrove forests, tidal marshes and seagrass meadows, and constructedwetlands for wastewater treatment.
The preparation of the Wetlands Supplement involved experts from around the world with expertise ininventory compilation, the IPCC Guidelines and LULUCF including in wetlands, forests and wetland soils.
There were 68 Lead Authors and 15 Review Editors. A further 22 experts were invited by the Lead Authorsof the report to be Contributing Authors and provided additional specific knowledge or expertise in a givenarea.
Lead Authors and Review Editors were selected for their scientific and technical expertise in relation to theapproved chapter outlines for the Wetlands Supplement from lists of experts nominated by governments
and IPCC observer organizations. Regional and gender balance were also considered, and attention paid toensuring the involvement of experts who previously had not worked on IPCC TFI reports.
The author teams assessed scientific and technical information in the course of their work on the Wetlands
Supplement. Priority was given to peer-reviewed literature if available and over 1,100 publications are cited.
Multiple stages of review are an essential part of the IPCC process. Both expert reviewers and governments
are invited at different stages to comment on the scientific and technical assessment and the overall balanceof the drafts. The review process includes worldwide participation, with hundreds of experts reviewing theaccuracy and completeness of the scientific assessment contained in the drafts.
The Wetlands Supplement will be presented to IPCC member governments for adoption and acceptance inOctober 2013.

9 October 2013
For more information, please contact:
IPCC Secretariat
c/o World Meteorological Organization
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P.O. Box 2300
CH-1211 Geneva 2SwitzerlandTel.: +41 (0) 22 730 82 08 / 54 / 84
Fax: +41 (0) 22 730 80 25 / 13
E-mail: IPCC-Sec@wmo.int
www.ipcc.ch

IPCC Task Force on National Greenhouse Gas
Inventories
Technical Support Unit
c/o Institute for Global Environmental Strategies
2108 -11, Kamiyamaguchi
Hayama, Kanagawa
Japan, 240-0115
Fax: (81 46) 855 3808
email: nggip-tsu@iges.or.jp
http://www.ipcc-nggip.iges.or.jp