The aim of this report is to review existing global emission inventories of the six Kyoto greenhouse gases (GHGs) including carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs) and sulphur hexafluoride (SF6).
The following data sources are considered:
- United Nations Framework Convention on Climate Change (UNFCCC)
- World Resource Institute (WRI)
- Emission Database for Global Atmospheric Research (EDGAR)
- International Energy Agency (IEA)
- US Energy Statistics (US Environmental Protection Agency, EPA and US Energy Information Administration, EIA)
- Carbon Dioxide Information Analysis Centre (CDIAC)
This report discusses the strength and weaknesses of each of the data sources including their uncertainty, and the relative merits of the methodologies used to construct them. The global GHG estimates as compiled and presented in this report do not include emissions from Land Use, Land Use Change and Forestry (LULUCF), as this source/sink category is considered separately in another research currently conducted by the Met Office. It should be noted the list of data sources as reviewed in this report is not exhaustive, and there are other data sources such as the Global Carbon Project which provide global CO2 estimates.
These sources are quoted in the report but they are not discussed in depth.