IPCC list of greenhouse gases
This is a list of LLGHG (long-lived greenhouse gases) 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.[1]
Mole fractions: μmol/mol = ppm = parts per million (106); nmol/mol = ppb = parts per billion (109); pmol/mol = ppt = parts per trillion (1012).
| Mole fractions and their changes | Radiative forcing | |||
|---|---|---|---|---|
| Species | 2005 | Change since 1998 | 2005 (W m–2) | 1998 (%) |
| CO2 | 379 ± 0.65 μmol/mol | +13 μmol/mol | 1.66 | +13 |
| CH4 | 1,774 ± 1.8 nmol/mol | +11 nmol/mol | 0.48 | – |
| N2O | 319 ± 0.12 nmol/mol | +5 nmol/mol | 0.16 | +11 |
| CFC-11 | 251 ± 0.36 pmol/mol | −13 | 0.063 | −5 |
| CFC-12 | 538 ± 0.18 pmol/mol | +4 | 0.17 | +1 |
| CFC-113 | 79 ± 0.064 pmol/mol | −4 | 0.024 | −5 |
| HCFC-22 | 169 ± 1.0 pmol/mol | +38 | 0.033 | +29 |
| HCFC-141b | 18 ± 0.068 pmol/mol | +9 | 0.0025 | +93 |
| HCFC-142b | 15 ± 0.13 pmol/mol | +6 | 0.0031 | +57 |
| CH3CCl3 | 19 ± 0.47 pmol/mol | −47 | 0.0011 | −72 |
| CCl4 | 93 ± 0.17 pmol/mol | −7 | 0.012 | −7 |
| HFC-125 | 3.7 ± 0.10 pmol/mol | +2.6 | 0.0009 | +234 |
| HFC-134a | 35 ± 0.73 pmol/mol | +27 | 0.0055 | +349 |
| HFC-152a | 3.9 ± 0.11 pmol/mol | +2.4 | 0.0004 | +151 |
| HFC-23 | 18 ± 0.12 pmol/mol | +4 | 0.0033 | +29 |
| SF6 | 5.6 ± 0.038 pmol/mol | +1.5 | 0.0029 | +36 |
| CF4 (PFC-14) | 74 ± 1.6 pmol/mol | – | 0.0034 | – |
| C2F6 (PFC-116) | 2.9 ± 0.025 pmol/mol | +0.5 | 0.0008 | +22 |
The older data from 1998 has been left for reference.
| Gas | Alternate name | Formula | 1998 level | Increase since 1750 | Radiative forcing (Wm−2) | Specific heat at STP (J kg−1) |
|---|---|---|---|---|---|---|
| Carbon dioxide | Carbonic anhydride | (CO2) | 365 μmol/mol | 87 μmol/mol | 1.46 | 0.819 |
| Carbon monoxide | Carbonic oxide | (CO) | 11.1 μmol/mol | 46 nmol/mol | 0.89 | 1.013 |
| Methane | Marsh gas | (CH4) | 1,745 nmol/mol | 1,045 nmol/mol | 0.48 | 2.191 |
| Nitrous oxide | Laughing gas | (N2O) | 314 nmol/mol | 44 nmol/mol | 0.15 | 0.88 |
| Tetrafluoromethane | Carbon tetrafluoride | (CF4) | 80 pmol/mol | 40 pmol/mol | 0.003 | 1.33 |
| Hexafluoroethane | Perfluoroethane | (C2F6) | 3 pmol/mol | 3 pmol/mol | 0.001 | 0.067 |
| Sulfur hexafluoride | Sulfur fluoride | (SF6) | 4.2 pmol/mol | 4.2 pmol/mol | 0.002 | 0.074 |
| HFC-23* | Trifluoromethane | (CHF3) | 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 | (C2H4F2) | 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 (Wm−2) |
|---|---|---|---|---|---|
| CFC-11§ | Trichlorofluoromethane | (CFCl3) | 268 pmol/mol | 268 pmol/mol | 0.07 |
| CFC-12§ | Dichlorodifluoromethane | (CF2Cl2) | 533 pmol/mol | 533 pmol/mol | 0.17 |
| CFC-13§ | Chlorotrifluoromethane | (CClF3) | 4 pmol/mol | 4 pmol/mol | 0.001 |
| CFC-113 | 1,1,1-Trichlorotrifluoroethane | (C2F3Cl3) | 84 pmol/mol | 84 pmol/mol | 0.03 |
| CFC-114 | 1,2-Dichlorotetrafluoroethane | (C2F4Cl2) | 15 pmol/mol | 15 pmol/mol | 0.005 |
| CFC-115 | Chloropentafluoroethane | (C2F5Cl) | 7 pmol/mol | 7 pmol/mol | 0.001 |
| Carbon tetrachloride | Tetrachloromethane | (CCl4) | 102 pmol/mol | 102 pmol/mol | 0.01 |
| 1,1,1-Trichloroethane | Methyl chloroform | (CH3CCl3) | 69 pmol/mol | 69 pmol/mol | 0.004 |
| HCFC-141b | 1,1-Dichloro-1-fluoroethane | (C2H3FCl2) | 10 pmol/mol | 10 pmol/mol | 0.001 |
| HCFC-142b | 1-Chloro-1,1-difluoroethane | (C2H3F2Cl) | 11 pmol/mol | 11 pmol/mol | 0.002 |
| Halon-1211 | Bromochlorodifluoromethane | (CClF2Br) | 3.8 pmol/mol | 3.8 pmol/mol | 0.001 |
| Halon-1301 | Bromotrifluoromethane | (CF3Br) | 2.5 pmol/mol | 2.5 pmol/mol | 0.001 |
References
- "Chapter 2". Climate Change 2007 Contribution of Working Group I.
External links
(Source: IPCC radiative forcing report 1994 updated (to 1998) by IPCC TAR table 6.1 . See also .
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