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

  1. ↑ "Chapter 2". Climate Change 2007 Contribution of Working Group I.

(Source: IPCC radiative forcing report 1994 updated (to 1998) by IPCC TAR table 6.1 . See also .

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