This site (http://ghg.unfccc.int) contains summary tables and an on-line database of emission estimates for three main gases: CO2, CH4, N2O, as well as for CO, NOX, NMVOCs, and SO2. These data are in general available for 1990 - 1997. The emission estimates are presented in accordance with the source categories of the Intergovernmental Panel on Climate Change Guidelines for National Greenhouse Gas Inventories (1996). This site contains only the most recently submitted information. In some cases, the most recent information for a period of years (e.g. 1990-1997) 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. Global Warming Potentials The Global Warming Potentials used for presentation of CH4 and N2O in terms of CO2 equivalent are 21 and 310, respectively, for a 100 year time horizon (source: Climate Change 1995: The Science of Climate Change, table 4, p. 22, Intergovernmental Panel on Climate Change, 1996). Emission source categories Emission estimates are presented in accordance with the source categories of the Intergovernmental Panel on Climate Change Guidelines for National Greenhouse Gas Inventories (1996), with the exception of emissions from burning of biomass. As some information has been reported following previous IPCC reporting formats, emissions estimates from burning of biomass from gases other than CO2 are also provided where reported separately from other source categories. 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). Furthermore, in the case of CO2 , the "National Total" does not include emissions from biomass burning or emissions or removals from the land-use change and forestry sector.

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. In addition, Annex I Parties submit annual national greenhouse gas inventories.

Gigagrams of N2O

Atmosphere

Emissions of GHG, ODS, Dust, Metals