IPCC list of greenhouse gases
This is a list of LLGHG greenhouse gases as used by the IPCC TAR.
Gases relevant to radiative forcing only (per IPCC documentation)
The following table has its sources in Chapter 2, p. 141, Table 2.1. of the IPCC Fourth Assessment Report, 2007.Mole fractions: μmol/mol = ppm = parts per million ; nmol/mol = ppb = parts per billion ; pmol/mol = ppt = parts per trillion.''
The older data from 1998 has been left for reference.
| Gas | Alternate name | Formula | 1998 level | Increase since 1750 | Radiative forcing | Specific heat at STP |
| Carbon dioxide | Carbonic anhydride | 365 μmol/mol | 87 μmol/mol | 1.46 | 0.819 | |
| Carbon monoxide | Carbonic oxide | 11.1 μmol/mol | 46 nmol/mol | 0.89 | 1.013 | |
| Methane | Marsh gas | 1,745 nmol/mol | 1,045 nmol/mol | 0.48 | 2.191 | |
| Nitrous oxide | Laughing gas | 314 nmol/mol | 44 nmol/mol | 0.15 | 0.88 | |
| Tetrafluoromethane | Carbon tetrafluoride | 80 pmol/mol | 40 pmol/mol | 0.003 | 1.33 | |
| Hexafluoroethane | Perfluoroethane | 3 pmol/mol | 3 pmol/mol | 0.001 | 0.067 | |
| Sulfur hexafluoride | Sulfur fluoride | 4.2 pmol/mol | 4.2 pmol/mol | 0.002 | 0.074 | |
| HFC-23* | Trifluoromethane | 14 pmol/mol | 14 pmol/mol | 0.002 | 0.064 | |
| HFC-134a* | 1,1,1,2-Tetrafluoroethane | C2H2F4 | 7.5 pmol/mol | 7.5 pmol/mol | 0.001 | 0.007 |
| HFC-152a* | 1,1-Difluoroethane | 0.5 pmol/mol | 0.5 pmol/mol | 0.000 | 0.04 |
Gases relevant to radiative forcing and ozone depletion (per IPCC documentation)
| Gas | Alternate name | Formula | 1998 level | Increase since 1750 | Radiative forcing |
| CFC-11§ | Trichlorofluoromethane | 268 pmol/mol | 268 pmol/mol | 0.07 | |
| CFC-12§ | Dichlorodifluoromethane | 533 pmol/mol | 533 pmol/mol | 0.17 | |
| CFC-13§ | Chlorotrifluoromethane | 4 pmol/mol | 4 pmol/mol | 0.001 | |
| CFC-113 | 1,1,1-Trichlorotrifluoroethane | 84 pmol/mol | 84 pmol/mol | 0.03 | |
| CFC-114 | 1,2-Dichlorotetrafluoroethane | 15 pmol/mol | 15 pmol/mol | 0.005 | |
| CFC-115 | Chloropentafluoroethane | 7 pmol/mol | 7 pmol/mol | 0.001 | |
| Carbon tetrachloride | Tetrachloromethane | 102 pmol/mol | 102 pmol/mol | 0.01 | |
| 1,1,1-Trichloroethane | Methyl chloroform | 69 pmol/mol | 69 pmol/mol | 0.004 | |
| HCFC-141b | 1,1-Dichloro-1-fluoroethane | 10 pmol/mol | 10 pmol/mol | 0.001 | |
| HCFC-142b | 1-Chloro-1,1-difluoroethane | 11 pmol/mol | 11 pmol/mol | 0.002 | |
| Halon-1211 | Bromochlorodifluoromethane | 3.8 pmol/mol | 3.8 pmol/mol | 0.001 | |
| Halon-1301 | Bromotrifluoromethane | 2.5 pmol/mol | 2.5 pmol/mol | 0.001 |