Table 27.1 - Mean atmospheric lifetimes of greenhouse gases with their global warming potentials (GWPs) relative to carbon dioxide
Source: IPCC, 1992
| Gas | Lifetime (years) | GWP |
|---|---|---|
| CO2 | 50200 | 1 |
| CH4 | 10.5 | 63 |
| N2O | 132.0 | 270 |
| CFC-11 | 55.0 | 4500 |
| CFC-12 | 116.0 | 7100 |
| CFC-113 | 110.0 | 4500 |
| CFC-114 | 220.0 | 6000 |
| CFC-115 | 550.0 | 5500 |
| HCFC-22 | 15.8 | 4100 |
| HCFC-123 | 1.7 | 310 |
| HCFC-124 | 6.9 | 1500 |
| HCFC-141 | 10.8 | 1500 |
| HCFC-142 | 22.4 | 3700 |
| HFC-125 | 40.5 | 4700 |
| HFC-134 | 15.6 | 3200 |
| HFC-143 | 64.2 | 4500 |
| HFC-152 | 1.8 | 510 |
| CCl4 | 47.0 | 1900 |
| CH3CCl3 | 6.1 | 350 |
| CF3Br | 77.0 | 5800 |
Note: An integration time horizon of 20 years is assumed here.