IPCC list of greenhouse gases

From Wikipedia, the free encyclopedia

This is a list of anthropogenic greenhouse gases as used by the IPCC TAR. Even though it contributes the majority of the greenhouse effect, water vapor is not listed here as human activity doesn't contribute directly to increased atmospheric levels as with the compounds listed below.

Gas Alternate Name   Formula   1998 Level   Increase since 1750   Radiative forcing (Wm2)
Carbon dioxide (CO2) 365ppm 87 ppm 1.46
Methane (CH4) 1,745ppb 1,045ppb 0.48
Nitrous oxide (N2O) 314ppb 44ppb 0.15
Tetrafluoromethane Carbon tetrafluoride (CF4) 80ppt 40ppt 0.003
Hexafluoroethane (C2F6) 3 ppt 3ppt 0.001
Sulfur hexafluoride (SF6) 4.2ppt 4.2ppt 0.002
HFC-23* Trifluoromethane (CHF3) 14ppt 14ppt 0.002
HFC-134a* 1,1,1,2-tetrafluoroethane (C2H2F4) 7.5ppt 7.5ppt 0.001
HFC-152a* 1,1-Difluoroethane (C2H4F2) 0.5ppt 0.5ppt 0.000

Gas   Alternate Name   Formula   1998 Level   Increase since 1750   Radiative forcing (Wm2)
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-Trichlorotrifluoroethane (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 [1]. See also [2].

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