Due to human activity, besides the natural greenhouse gas emissions (carbon dioxide &ndash; CO 2 , methane&ndash; CH 4 , nitrous dioxide&ndash; N 2 O) there are also other (anthropogenic) gases with high greenhouse potential, for instance F-gases (hydrofluorocarbons &ndash; HFCs, perfluorinated carbons &ndash; PFC, sulfur hexafluoride &ndash; SF 6 ).
Naravnim toplogrednim plinom (ogljikov dioksid &ndash; CO 2 , metan &ndash; CH 4 , didušikov monoksid &ndash; N 2 O) so se kot posledica človeške dejavnosti pridružili še drugi (antropogeni) plini, ki imajo močan toplogredni potencial: to so tako imenovani F-plini (fluorirani ogljikovodiki &ndash; HFC, perfluorirani ogljikovodiki &ndash; PFC, žveplov heksafluorid &ndash; SF 6 ).