| AAU |
Assigned amount unit (exchanged through emissions trading) |
| AG13 |
Ad Hoc Group on Article 13 (1995–1998) |
| AGBM |
Ad Hoc Group on the Berlin Mandate (1995–1997) |
| AIJ |
Activities implemented jointly |
| AOSIS |
Alliance of Small Island States |
| CACAM |
Group of countries of Central Asia and the Caucasus, Albania and Republic of Moldova (negotiating coalition) |
| CBD |
Convention on Biological Diversity |
| CDM |
Clean development mechanism |
| CER |
Certified emission reduction (generated through the CDM) |
| CFC |
Chlorofluorocarbon |
| CGE |
Consultative Group of Experts on National Communications from Parties not included in Annex I to the Convention |
| CH4 |
Methane |
| CG |
Central Group (negotiating coalition of Central European Annex I Parties) |
| CO2 |
Carbon dioxide |
| COP |
Conference of the Parties |
| COP/MOP |
Conference of the Parties serving as the meeting of the Parties to the Kyoto Protocol |
| EC |
European Commission |
| EGTT |
Expert Group on Technology Transfer |
| EIT |
Economies in transition (former Soviet Union and Central and Eastern European nations) |
| ERU |
Emission reduction unit (generated through joint implementation projects) |
| GCOS |
Global Climate Observing System |
| GEF |
Global Environment Facility |
| GHG |
Greenhouse gases |
| GRULAC |
Group of Latin America and Caribbean States (United Nations regional group) |
| GWP |
Global warming potential |
| HFC |
Hydrofluorocarbons |
| ICAO |
International Civil Aviation Organization |
| IEA |
International Energy Agency |
| IGO |
Intergovernmental organization |
| IMO |
International Maritime Organization |
| INC |
Intergovernmental Negotiating Committee for the UNFCCC (1990–1995) |
| IPCC |
Intergovernmental Panel on Climate Change |
| JLG |
Joint Liaison Group (between the UNFCCC, CBD and UNCCD secretariats) |
| JWG |
Joint Working Group |
| LDC |
Least developed country |
| LULUCF |
Land use, land-use change and forestry |
| N2O |
Nitrous oxide |
| NAPA |
National adaptation programmes of action |
| NAP |
National Allocation Plan |
| NER |
New Entrants Reserve |
| NGO |
Non governmental organization |
| OECD |
Organisation for Economic Co-operation and Development |
| OPEC |
Organization of Petroleum Exporting Countries |
| PFC |
Perfluorocarbon |
| RMU |
Removal unit (generated in Annex I Parties by LULUCF activities that absorb carbon dioxide) |
| SBI |
Subsidiary Body for Implementation |
| SBSTA |
Subsidiary Body for Scientific and Technological Advice |
| SF6 |
Sulphur-hexafluoride |
| TT:CLEAR |
Technology Transfer Information Clearing House |
| UN |
United Nations |
| UNCCD |
United Nations Convention to Combat Desertification |
| UNCED |
United Nations Conference on Environment and Development (Rio de Janeiro, Brazil, 1992) |
| UNCTAD |
United Nations Conference on Trade and Development |
| UNDP |
United Nations Development Programme |
| UNECE |
United Nations Economic Commission for Europe |
| UNEP |
United Nations Environment Programme |
| UNFCCC |
United Nations Framework Convention on Climate Change |
| UNIDO |
United Nations Industrial Development Organization |
| URF |
Uniform reporting format |
| WCC |
World Climate Conference |
| WEOG |
Western European and Others Group (United Nations regional group) |
| WHO |
World Health Organization |
| WMO |
World Meteorological Organization |
| WSSD |
World Summit on Sustainable Development |
| IETA |
International Emissions Trading Association (www.ieta.org) |