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Greenhouse gas |
Formula |
100-year global warming potential |
Atmospheric lifetime |
|---|---|---|---|
| Carbon dioxide | CO2 | 1 |
variable |
| Methane | CH4 | 21 |
12 ± 3 |
| Nitrous oxide | N2O | 310 |
120 |
| Sulphur hexafluoride | SF6 | 23 900 |
3 200 |
| Hydrofluorocarbons (HFCs) | |||
| HFC-23 | CHF3 | 11 700 |
264 |
| HFC-32 | CH2F2 | 650 |
5.6 |
| HFC-41 | CH3F | 150 |
3.7 |
| HFC-43-10mee | C5H2F10 | 1 300 |
17.1 |
| HFC-125 | C2HF5 | 2 800 |
32.6 |
| HFC-134 | C2H2F4 (CHF2CHF2) | 1 000 |
10.6 |
| HFC-134a | C2H2F4 (CH2FCF3) | 1 300 |
14.6 |
| HFC-143 | C2H3F3 (CHF2CH2F) | 300 |
1.5 |
| HFC-143a | C2H3F3 (CF3CH3) | 3 800 |
3.8 |
| HFC-152a | C2H4F2 (CH3CHF2) | 140 |
48.3 |
| HFC-227ea | C3HF7 | 2 900 |
36.5 |
| HFC-236fa | C3H2F6 | 6 300 |
209 |
| HFC-245ca | C3H3F5 | 560 |
6.6 |
| Perfluorocarbons (PFCs) | |||
| Perfluoromethane | CF4 | 6 500 |
50 000 |
| Perfluoroethane | C2F6 | 9 200 |
10 000 |
| Perfluoropropane | C3F8 | 7 000 |
2 600 |
| Perfluorobutane | C4F10 | 7 000 |
2 600 |
| Perfluorocyclobutane | c-C4F8 | 8 700 |
3 200 |
| Perfluoropentane | C5F12 | 7 500 |
4 100 |
| Perfluorohexane | C6F14 | 7 400 |
3 200 |
| Source: Environment Canada, 2005. | |||
| Table source: Statistics Canada, 2006, Canadian Environmental Sustainability Indicators: Greenhouse Gas Emissions Indicator – Data Sources and Methods, Catalogue number 16-255-XWE2006000. | |||