In accordance with Articles 4 and 12 of the Convention, and the relevant decisions of the Conference of the Parties, Parties to the Convention submit national greenhouse gas inventories to the Climate Change secretariat. These inventory data are provided in the national communications under the Convention by Annex I and non-Annex I Parties, and in addition Annex I Parties submit annual national greenhouse gas inventories.

The GHG data tables contain estimates for:

Main greenhouse gases
CO₂ - Carbon dioxide
CH₄ - Methane
N₂O - Nitrous oxide
PFCs - Perfluorocarbons
HFCs - Hydrofluorocarbons
SF₆ - Sulphur hexafluoride

The data contain only the most recently submitted information, covering the period from 1990 to 2003, to the extent the data have been provided.  In some cases, the most recent information for a period of years (e.g. 1990-2003) is based on different submissions, as information submitted from year to year does not necessarily include data for years previously submitted. Thus the data may not necessarily be consistent or comparable among years for a given Party. Please see "Information on data sources" for an indication of the sources of data.

The data are reproduced here as reported, with the exception of rounding during data processing and corrections of typographical or calculation errors or omissions, therefore totals and sub-totals may differ from the sum of the individual components.

Predefined queries are available while the searchable GHG database is currently under going redevelopment and is unavailable.

Emission source categories

Emission estimates are presented in accordance with the source categories (definitions) of the Intergovernmental Panel on Climate Change Guidelines for National Greenhouse Gas Inventories (1996).

It should also be noted that the category "National Total" does not include emissions resulting from fuel sold to ships or aircraft engaged in international transport (international bunker fuel emissions).

“-- “ in the tables indicate emissions whose values are zero or not reported.

Global Warming Potentials

The Global Warming Potentials (GWP) used for presentation of CH₄ and N₂O in terms of CO₂ equivalent are 21 and 310, respectively. For HFCs, PFCs, and SF₆ the GWP for a 100 year time horizon have also been used. (source of GWP: Climate Change 1995: The Science of Climate Change, table 4, p. 22, Intergovernmental Panel on Climate Change, 1996).