Greenhouse gases refers to the six that are rated under the Kyoto Protocol as having Global Warming Potential (GWP):
- Carbon dioxide (CO2)
- Methane (CH4)
- Nitrous oxide (N2O)
- Hydroflourocarbons (HFCs)
- Perfluorocarbons (PFCs)
- Sulphur hexafluoride (SF6)
GHG emissions are reported as million tonnes of carbon dioxide equivalent (MtCO2-e)