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Welcome to EFDB!

  • Nature of EFDB: EFDB is meant to be a recognised library, where users can find emission factors and other parameters with background documentation or technical references that can be used for estimating greenhouse gas emissions and removals. The responsibility of using this information appropriately will always remain with the users themselves.
  • Request for data input: Users are encouraged to provide the EFDB with any relevant proposals on emission factors or other related parameters. If you wish to submit your data for the first time, please contact the Technical Support Unit to obtain your login name and password. Acceptance of such proposals will be subject to evaluation by the EFDB Editorial Board using well-defined criteria.
  • Terminology: EFDB is a database on various parameters to be used in calculation of anthropogenic emissions by sources and removals by sinks of greenhouse gases. It covers not only the so-called "emission factors" but also the other relevant parameters. For convenience sake, however, the term "Emission Factor" or its abbreviation "EF" is sometimes used to represent parameters in this database generally.
  • Software requirements: It is highly recommended to use Microsoft Internet Explorer version 5.0 or higher for best performance. Alternatively Netscape Navigator version 6.0 or higher can be used. It is also recommended to have Microsoft Office 97 or higher for generating Word and Excel outputs.
  • EFDB at present contains only the IPCC default data IPCC Good Practice Guidance and Uncertainty Management in National Greenhouse Gas Inventories, IPCC Good Practice Guidance for Land Use, Land-Use Change and Forestry, and 2006 IPCC Guidelines for National Greenhouse Gas Inventories), and data from peer-reviewed papers and other publications including National Inventory Reports (NIRs).

What's new

20 November 2012 - The old CORINAIR data have been removed as it is outdated. Information on emissions from local and regional air pollutants can be found from a number of sources including the Air Pollutant Emission Factor Library, the EMEP/EEA air pollutant emission inventory guidebook and the USEPA.

29 November 2011 - The electronic file of nomination form for the EFDB Editorial Board members (Attachment III to the letter No: 5325-11/IPCC/TFI) is available here. Due date for nomination is 31 January 2012.

28 November 2011 - The EFDB CDROM version 2.3 (November 2011) has been produced for distribution at the UNFCCC COP17/CMP7 in Durban, South Africa (28 November - 9 December 2011)

29 November 2010 - The EFDB CDROM version 2.2 (November 2010) has been produced for distribution at the UNFCCC COP16/CMP6 in Cancun, Mexico (29 November - 10 December 2010).

29 November 2010 - IPCC-TFI Side Event was held at UNFCCC-COP16 in Cancun, Mexico, on 29 November 2010. Presentation on EFDB was made at this side event.

3 November 2010 - Presentation on EFDB was made at the Second Workshop on the Revision of the UNFCCC Annex I Reporting Guidelines for Reporting of Inventories under the Convention (Bonn, Germany).

7 July 2010 - New members of Editorial Board have been selected from experts nominated by governments and international organizations.

31 May 2010 - IPCC-TFI Side Event was held at UNFCCC-SB32 in Bonn, 31 May 2010. Presentation on EFDB was made at this side event.

30 April 2010 - Four new data for Industrial Processes Sector have been accepted by the Editorial Board and have been made available. [EF-ID: 221178-221181] These data were provided by Finnish Environment Institute (SYKE) in Finland.

20 April 2010 - Twenty-one new data for Energy Sector have been accepted by the Editorial Board and have been made available. [EF-ID: 121157-121177] These data were provided by Korea Energy Management Corporation (KEMCO) in Republic of Korea.