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Greenhouse Gases Global Warming Potential

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Greenhouse Gases: Global Warming Potential

Table data referenced to the Updated Decay Response for the Bern Carbon Cycle Model and Future CO2 Atmospheric Concentrations Held Constant at Current Levels

Species Chemical
Carbon Dioxide CO2
Methanec CH4
Nitrous Oxide N2O
HFC-32 CH2F2
HFC-43-10mee C5H2F10
HFC-125 C2HF5
HFC-134 C2H2F4
HFC-134a CH2FCF3
HFC-152a C2H4F2
HFC-143 C2H3F3
HFC-143a C2H3F3
HFC-227ea C3HF7
HFC-236fa C3H2F6
HFC-245ca C3H3F5
Sulfur hexafluoride SF6
Perfluoromethane CF4
Perfluoroethane C2F6
Perfluoropropane C3F8
Perfluorobutane C4F10
Perfluorocyblobutane c-C4F8
Perfluoropentane C5F12
Perfluorohexane C6F14

a Water vapor has been omitted because of its shorter average residence time in the atmosphere (i.e., about 7 days).
b Derived from the Bern carbon cycle model.
cThe global warming potential (GWP) for methane includes indirect effects of tropospheric ozone production and stratospheric water vapor production.
d The GWPs for ozone-depleting substances (including all CFCs, HCFCs, and halons, whose direct GWPs have been given in previous reports) are a sum of a direct (positive) component and an indirect (negative) component which depends strongly upon the effectiveness of each substance for ozone destruction. Generally, the halons are likely to have negative net GWPs, while those of the CFCs are likely to be positive over both 20-and 100- year time horizons.


Houghton, John T., L. G. Meiro Filho, B.A. Callander, N. Harris, A. Kattenburg, and K. Maskell, Climate Change 1995: The Science of Climate Change, Cambridge University Press, June 1996.