IPCC list of greenhouse gases

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This is a list of anthropogenic greenhouse gases as used by the IPCC TAR.

[edit] Gases relevant to radiative forcing only (per IPCC documentation)

The following table has its sources in the IPCC Fourth Assessment Report, 2007 [1], pg 141. The older data from 1998 has been left for reference.

Concentrations and their changes Radiative Forcing
Species 2005 Change since 1998 2005 (W m–2) 1998 (%)
CO2 379 ± 0.65 ppm +13 ppm 1.66 +13
CH4 1,774 ± 1.8 ppb +11 ppb 0.48 -
N2O 319 ± 0.12 ppb +5 ppb 0.16 +11
CFC-11 251 ± 0.36 ppt –13 0.063 –5
CFC-12 538 ± 0.18 ppt +4 0.17 +1
CFC-113 79 ± 0.064 ppt –4 0.024 –5
HCFC-22 169 ± 1.0 ppt +38 0.033 +29
HCFC-141b 18 ± 0.068 ppt +9 0.0025 +93
HCFC-142b 15 ± 0.13 ppt +6 0.0031 +57
CH3CCl3 19 ± 0.47 ppt –47 0.0011 –72
CCl4 93 ± 0.17 ppt –7 0.012 –7
HFC-125 3.7 ± 0.10 ppt +2.6 0.0009 +234
HFC-134a 35 ± 0.73 ppt +27 0.0055 +349
HFC-152a 3.9 ± 0.11 ppt +2.4 0.0004 +151
HFC-23 18 ± 0.12 ppt +4 0.0033 +29
SF6 5.6 ± 0.038 ppt +1.5 0.0029 +36
CF4 (PFC-14) 74 ± 1.6 ppt - 0.0034 -
C2F6 (PFC-116) 2.9 ± 0.025 ppt +0.5 0.0008 +22
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) 365ppm 87ppm 1.46 0.819
Carbon Monoxide Carbonic Oxide (CO) 11.1ppm 46ppb 0.89 1.013
Methane Marsh gas (CH4) 1,745ppb 1,045ppb 0.48 2.191
Nitrous oxide Laughing gas (N2O) 314ppb 44ppb 0.15 0.88
Tetrafluoromethane Carbon tetrafluoride (CF4) 80ppt 40ppt 0.003 1.33
Hexafluoroethane Perfluoroethane (C2F6) 3 ppt 3ppt 0.001 0.067
Sulfur hexafluoride Sulfur fluoride (SF6) 4.2ppt 4.2ppt 0.002 0.074
HFC-23* Trifluoromethane (CHF3) 14ppt 14ppt 0.002 0.064
HFC-134a* 1,1,1,2-tetrafluoroethane 0.001(C2H2F4) 7.5ppt 7.5ppt 0.001 0.007
HFC-152a* 1,1-Difluoroethane (C2H4F2) 0.5ppt 0.5ppt 0.000 0.04

[edit] 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) 268ppt 268ppt 0.07
CFC-12§ Dichlorodifluoromethane (CF2Cl2) 533ppt 533ppt 0.17
CFC-13§ Chlorotrifluoromethane (CClF3) 4ppt 4ppt 0.001
CFC-113 1,1,1-Trichlorotrifluoromethane (C2F3Cl3) 84ppt 84ppt 0.03
CFC-114 1,2-Dichlorotetrafluoroethane (C2F4Cl2) 15ppt 15ppt 0.005
CFC-115 Chloropentafluoroethane (C2F5Cl) 7ppt 7ppt 0.001
Carbon tetrachloride Tetrachloromethane (CCl4) 102ppt 102ppt 0.01
1,1,1-Trichloroethane Methyl chloroform (CH3CCl3) 69ppt 69ppt 0.004
HCFC-141b 1,1-Dichloro-1-Fluoroethane (C2H3FCl2) 10ppt 10ppt 0.001
HCFC-142b 1-Chloro-1,1-Difluoroethane (C2H3F2Cl) 11ppt 11ppt 0.002
Halon-1211 Bromochlorodifluoromethane (CClF2Br) 3.8ppt 3.8ppt 0.001
Halon-1301 Bromotrifluoromethane (CF3Br) 2.5ppt 2.5ppt 0.001

(Source: IPCC radiative forcing report 1994 updated (to 1998) by IPCC TAR table 6.1 [2]. See also [3].

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