Key findings of IPCC/TEAP's Special Report on “Safeguardingthe ozone layer and the global climate system: Issues related tohydrofluorocarbons and perfluorocarbons”

摘要

Chlorofluorocarbons and bromocarbons deplete the ozone layer and are being phased out under the Montreal Protocol.In many applications such as refrigeration and air conditioning,foams,medical aerosols,fire protection,solvents,etc.,these ozone-depleting substancesare being replaced mainly with hydrofluorocarbons (HFCs) and in very few cases perfluorocarbons(PFCs).These HFCs and PFCs,while non-ozone depleting,are greenhouse gasesand hence contribute to global warming.Options exist to substitute for these gases in certainapplications.The IPCC and TEAP have finalized a Special Report on “Safeguarding the ozonelayer and the global climate system: Issues related to hydrofluorocarbons and perfluorocarbons”(SROC) in 2005.This paper highlights the key findings of the report regarding emissions ofozone-depleting substances,HFCs,alternatives to HFCs,as well as greenhouse gas (GHG) emissionreduction options.