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 (default data presented in the Revised 1996 IPCC Guidelines for National Greenhouse Gas Inventories and the IPCC Good Practice Guidance and Uncertainty Management in National Greenhouse Gas Inventories). It also contains the data from CORINAIR94, but please note that these data records may be renewed in due course in accordance with the latest version of CORINAIR data set (i.e., data in the Joint EMEP/CORINAIR Atmospheric Emission Inventory Guidebook, Third Edition. Copenhagen: European Environment Agency, 2001). It is highly recommended to consult the website at http://reports.eea.eu.int/EMEPCORINAIR4/en for details on CORINAIR data.

What's new

13 October 2008 - Forty-eight new data for LULUCF Sector have been accepted by the Editorial Board and have been made available. [EF-ID: 520807-520816 and 520818-520855] These data were provided by Mr. G.H. Sabin Guendehou.

3 October 2008 - The electronic file of nomination form for the EFDB Editorial Board members (Attachment III to the letter No: 5393-08/IPCC/TFI) is available here. Due date for nomination is 10 October 2008.

11 September 2008 - Sixty-six new data for Agriculture Sector have been accepted by the Editorial Board and have been made available. [EF-ID: 420741 to 420806] These data were provided by Dr Anna A. Romanovskaya.

4 March 2008 - Twenty-one new data for Waste Sector have been accepted by the Editorial Board and have been made available. [EF-ID: 618414 and EF-ID: 620721 to 620740] These data were provided by United States Environmental Protection Agency.

4 January 2008 - The EFDB has been upgraded!! The source/sink classification used in the 2006 IPCC Guidelines has been incorporated. You can use either the 1996 Guidelines source/sink categories or 2006 Guidelines source sink categories when you search for data. Also, please note that default data provided in the 2006 IPCC Guidelines are now available from this database.

21 June 2007 - New data for Industrial Processes Sector (adipic acid production) have been accepted by the Editorial Board and have been made available. [EF-ID 213624 and 213625] These data were provided by GIO/CGER/NIES (Greenhouse Gas Inventory Office of Japan).

21 June 2007 - New data for Industrial Processes Sector (N2O emission factors for nitric acid production) have been accepted by the Editorial Board and have been made available. [EF-ID 210569 and 210570] These data were provided by Dr Pavel Fott (Czech Republic).

14 December 2006 - A new datum of emission factor for enteric fermentation of reindeer has been accepted by the Editorial Board and has been made available. [EF-ID 413623] This was provided by the Finnish Environment Institute.

17 November 2006 - Updated CDROM (version 1.2) has been produced and distributed at COP12/COPMoP2 in Nairobi, Kenya (6-17 November 2006).

24 October 2006 - 273 new data (parameters for allometric equations) have been accepted by the Editorial Board and have been made available. [EF-IDs 513646 - 513918] These data were provided by the Food and Agriculture Organization (FAO).