Carbon Dioxide (CO₂) 1 co2 co2 Methane (generic) (CH₄) 28 ch4 ch4 Fossil Methane (CH₄) 30 ch4 ch4f Biogenic Methane (CH₄) 28 ch4 ch4b Nitrous Oxide (N₂O) 265 n2o n2o HFC-125 3170 hfc CHF2CF3 HFC-134 1120 hfc CHF2CHF2 HFC-134a 1300 hfc CH2FCF3 HFC-143 328 hfc CHF2CH2F HFC-143a 4800 hfc CF3CH3 HFC-152 16 hfc CH2FCH2F HFC-161 4 hfc CH3CH2F HFC-227ea 3350 hfc CF3CHFCF3 HFC-23 12400 hfc hfc_23 HFC-152a 16 hfc CH3CHF2 HFC-236cb 1210 hfc CH2FCF2CF3 HFC-32 677 hfc CH2F2 HFC-41 116 hfc CH3F Carbon Tetrafluoride (CF₄) 6630 pfc cf4 Hexafluoroethane (C₂F₆) 11100 pfc c2f6 PFC-218 8900 pfc C3F8 PFC-318 9540 pfc c-C4F8 C4F6 12200 pfc C4F6 C5F8 12200 pfc C5F8 PFC-51-14 7910 pfc C6F14 Sulfur Hexafluoride (SF₆) 23500 sf6 sf6 Nitrogen Trifluoride 16100 nf3 NF3 C4F8O 1 other C4F8O HFE-125 12400 other CF3OCHF2 HFE-245fa1 828 other CHF2CH2OCF3 HFE-365mcf3 1 other CF3CF2CH2OCH3 HFE-7100 421 other C4F9OCH3 Carbon Monoxide 1 precursors CO Sulfur Dioxide (SO2+SO3) 1 precursors SO2