The information in Part III (with the exception of CO2 emissions from fuel combustion) has been provided by Dr. Jos G.J. Olivier from the Netherlands Environmental Assessment Agency (PBL) based on the EDGAR 4.0 database developed jointly by JRC and PBL as part of and in cooperation with the Global Exchange and Interactions Activity (GEIA) of IGBP and the ACCENT Network of Excellence.
Country data have been provided for 1990, 1995, 2000 and 2005. Moving to the EDGAR 4.0 database has resulted in some revisions to greenhouse-gas estimates. In particular, 2005 estimates for CH4 are 8% higher than in the previous edition and estimates for N20 are 25% lower (mostly due to agriculture and other). Please see Chapter 2 for further details on data sources and methodology.
Emission trends for gases and sources are provided in this discussion through 2005.
CO2 emissions from fuel combustion constitute the majority of anthropogenic greenhouse-gas emissions. However, comprehensive analysis of emissions and emission trends considers other sources of CO2 as well as other gases.
To complement work regarding the emissions of CO2 from fuel combustion, the IEA elected to include the EDGAR data on other CO2 sources and on five other greenhouse gases; CH4, N2O and the fluorinated gases (or "F-gases") HFCs, PFCs and SF6. These gases are addressed by the Kyoto Protocol.
When considering comparative shares and trends in greenhouse-gas emissions, data on gases and sources other than CO2 from fuel combustion are much more uncertain. Country-specific estimates of CO2 from biomass burning and F-gas emissions are particularly difficult to ascertain.
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