IPCC list of greenhouse gases

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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)[edit]

The following table has its sources in Chapter 2, pg 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 0.001(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)[edit]

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[edit]

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

See also[edit]

(Source: IPCC radiative forcing report 1994 updated (to 1998) by IPCC TAR table 6.1 [1]. See also [2].