Greenhouse gases
The Kyoto Protocol addresses emissions of the six greenhouse gases below.
| Gas | Global Warming Potential (GWP) |
Carbon dioxide (CO2) |
1 |
Methane (CH4) |
23 |
Nitrous oxide (N2O) |
296 |
Hydrofluorocarbons (HFCs) |
12 - 12,000 |
Perfluorocarbons (PFCs) |
5,700 – 11,900 |
Sulphur hexafluoride (SF6) |
22,200 | |
Data source: Third Assessment IPCC report, 2001
Earlier IPCC reports present different figures for GWP.