Figure SPM.1: Global Warming Potential (GWP) weighted global greenhouse gas emissions 1970-2004. 100 year GWPs from IPCC 1996 (SAR) were used to convert emissions to CO₂-eq. (cf. UNFCCC reporting guidelines). CO₂, CH₄, N₂O, HFCs, PFCs and SF₆ from all sources are included.

The two CO₂ emission categories reflect CO₂ emissions from energy production and use (second from bottom) and from land use changes (third from the bottom) [Figure 1.1a].

Notes:

1. Other N₂O includes industrial processes, deforestation/savannah burning, waste water and waste incineration.

2. Other is CH₄ from industrial processes and savannah burning.

3. Including emissions from bioenergy production and use

4. CO₂ emissions from decay (decomposition) of above ground biomass that remains after logging and deforestation and CO₂ from peat fires and decay of drained peat soils.

5. As well as traditional biomass use at 10% of total, assuming 90% is from sustainable biomass production. Corrected for 10% carbon of biomass that is assumed to remain as charcoal after combustion.

6. For large-scale forest and scrubland biomass burning averaged data for 1997-2002 based on Global Fire Emissions Data base satellite data.

7. Cement production and natural gas flaring.

8. Fossil fuel use includes emissions from feedstocks.