The appendices present information from the National Greenhouse Gas Inventory in a form intended to clarify trends over time. All values for 1990 to 1998 have been recalculated in the light of methodology changes and data revisions, and may differ from previously published values for the same years. Appendix 1 reports emissions of all greenhouse gases and calculates CO 2 -e totals for all sectors, key subsectors and certain combinations of subsectors, for each year from 1990 to 1999. Appendix 2 reports the sectoral contributions to the emission of each greenhouse gas, and to CO 2 -e totals, and summarises emissions by fuel type, for each year from 1990 to 1999. Appendix 3 indexes each year s emissions to 1990, the reference year.
Natural processes lie outside the scope of the Inventory.
This document generally disaggregates the Energy Sector into Stationary Energy, Fugitive Emissions and Transport. Agriculture is sometimes disaggregated into Livestock and Other Agriculture. The Forest and Grassland Conversion, or land clearing, subsector is currently reported separately from the total due to variable annual fluctuations in estimates of emissions resulting from improved understanding of the systems and improved data for various components. It is expected that as confidence in the estimates improves with the development of the National Carbon Accounting System, this subsector will be included in the national total in the future. The Australian Greenhouse Office is undertaking a cyclical review of methodologies and data sources for the Australian Inventory.