IPCC Fourth Assessment Report: Climate Change 2007
Climate Change 2007: Working Group III: Mitigation of Climate Change

Chemical Symbols

C2F6 Perfluoroethane / Hexafluoroethane 
CF4 Perfluoromethane / Tetrafluoromethane 
CFCs Chlorofluorocarbons 
CH4 Methane 
CO Carbon monoxide 
CO2 Carbon dioxide 
H / H2 Hydrogen (element / gas) 
H2Water / Water vapor 
HFCs Hydrofluorocarbons 
N / N2 Nitrogen (element /gas) 
N2Nitrous Oxide 
NF3 Nitrogen trifluoride 
NH3 / NH4+  Ammonia / Ammonium ion 
NMVOC Non-methane Volatile Organic Compounds 
NO Nitric oxide 
NO2 Nitrogen dioxide  
NOx The sum of NO and NO2 expressed in NO2 mass equivalent  
O / O2 Oxygen (element / gas) 
O3 Ozone 
SF6 Sulphur hexafluoride 
SO2 Sulphur dioxide 
SOx Sulphur oxides expressed in SO2 mass equivalent  
VOCs Volatile Organic Compounds