Data sources and methodology for 2005 EDGAR 40 19702005

In general, emissions for the year 2005 have been estimated using either preliminary EDGAR 4.0 data for selected sources or extrapolations from 2000 for main sources. The latter was done using reported emission trends for Annex I countries (e.g. coal mining, landfills, F-gases), trends in key activity data (e.g. cattle numbers for livestock, population for landfills), and extrapolation using the 1995-2000 trend (N2O from energy and agriculture). The smaller sources have been assumed to remain at the 2000 level (e.g. the three "Other" subcategories and SF6 emissions).

To take into account emission reductions that have occurred due to control measures implemented since 2000, officially reported emissions were used for Annex I countries (mainly countries that were members of the OECD in 1990). These emission trends have been taken from the CRF emission data files which are part of the National Inventory Reports (NIR) to the UNFCCC.

For EDGAR 4.0 the same method as for EDGAR 3.2 as described above was applied, however, taking more explicitly into account changes of emission factors over time due to the application of control technology or other emission reduction measures.

Preliminary EDGAR 4.0 data have been used in the country tables for all years for fugitive CO2 emissions from flaring/venting in oil and gas production (including indirect CO2 from venting of methane) and for industrial processes: CO2 emissions from cement and lime production, N2O emissions from adipic acid and nitric acid production and HFC-23 by-product emissions from HCFC-22 manufacture.

We note that new EDGAR 4.0 estimates for all sources have been made for all years, some of which were not yet available at the time of printing of this report. For final data of the EDGAR 4.0 dataset, including more detailed source category estimates per country for the period 1970-2005 we refer to the EDGAR v4 website at http://edgar.jrc.it.

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