The CRF codes used on this website are shown below.
| CRF Code | Source Description |
|---|---|
| 1 | Energy |
| 1.A | Fuel Combustion Activities |
| 1.A.1 | Energy Industries |
| 1.A.1.a.i | Public Electricity and Heat Production |
| 1.A.1.a.iii | Heat Plants |
| 1.A.1.b. | Petroleum Refining |
| 1.A.1.c.i | Chemicals |
| 1.A.1.c.ii | Oil and Gas Extraction |
| 1.A.1.c.iii | Other Energy industries |
| 1.A.2 | Manufacturing Industries and Construction |
| 1.A.2.a | Iron and Steel |
| 1.A.2.b | Non-ferrous metals |
| 1.A.2.c | Chemicals |
| 1.A.2.d | Pulp, Paper and Print |
| 1.A.2.e | Food Processing, Beverages and Tobacco |
| 1.A.2.f | Non-metallic minerals |
| 1.A.2.g.vii | Mobile combustion in manufacturing industries and construction |
| 1.A.2.g.viii | Stationary combustion in manufacturing and construction: other |
| 1.A.3 | Transport |
| 1.A.3.a | Domestic Aviation |
| 1.A.3.a.i | International Aviation |
| 1.A.3.a.ii | Civil Aviation |
| 1.A.3.b.i | Road Transportation: cars |
| 1.A.3.b.ii | Road Transportation: Light Duty trucks |
| 1.A.3.b.iii | Road Transportation: Heavy Duty trucks and buses |
| 1.A.3.b.iv | Road Transportation: Motorcycles |
| 1.A.3.b.v | Road Transportation: Other |
| 1.A.3.c | Railways |
| 1.A.3.d | Domestic Navigation |
| 1.A.3.e | Other Transportation |
| 1.A.3.e.ii | Other |
| 1.A.4 | Other Sectors |
| 1.A.4.a | Commercial / Institutional Combustion |
| 1.A.4.a.ii | Commercial/Institutional Mobile |
| 1.A.4.b.i | Residential stationary combustion |
| 1.A.4.b.ii | Household and gardening mobile combustion |
| 1.A.4.c.i | Agriculture/Forestry/Fishing stationary combustion |
| 1.A.4.c.ii | Off-road vehicles and other machinery from agriculture/forestry/fishing |
| 1.A.4.c.iii | Fishing |
| 1.A.5 | Other (not elsewhere specified) |
| 1.A.5.a | Other, stationary (including military) |
| 1.A.5.b | Other, mobile (including military) |
| 1.B | Fugitive Emissions from Fuels |
| 1.B.1 | Fugitive Emissions from Solid Fuels |
| 1.B.1.a | Coal Mining and Handling |
| 1.B.1.a.1 | Underground mines |
| 1.B.1.a.1.i | Mining activities |
| 1.B.1.a.1.ii | Post-mining activities |
| 1.B.1.a.1.iii | Abandoned underground mines |
| 1.B.1.a.2 | Surface Mines |
| 1.B.1.a.2.i | Mining activities |
| 1.B.1.b | Solid fuel transformation |
| 1.B.2 | Fugitive Emissions from Oil and Natural Gas |
| 1.B.2.a | Oil |
| 1.B.2.a.1 | Exploration |
| 1.B.2.a.2 | Production |
| 1.B.2.a.3 | Transport |
| 1.B.2.a.4 | Refining / Storage |
| 1.B.2.a.5 | Distribution |
| 1.B.2.a.6 | Oil Production |
| 1.B.2.b | Natural Gas |
| 1.B.2.b.1 | Exploration |
| 1.B.2.b.2 | Production |
| 1.B.2.b.3 | Processing |
| 1.B.2.b.4 | Transmission and storage |
| 1.B.2.b.5 | Distribution |
| 1.B.2.c | Venting and Flaring |
| 1.B.2.c.1 | Venting |
| 1.B.2.c.1.i | Oil |
| 1.B.2.c.1.ii | Gas |
| 1.B.2.c.2 | Flaring |
| 1.B.2.c.2.i | Oil |
| 1.B.2.c.2.ii | Gas |
| 1.B.2.d | Other energy industries |
| 2 | Industrial Processes and Product Use |
| 2.A | Mineral Products |
| 2.A.1 | Cement Production |
| 2.A.2 | Lime Production |
| 2.A.3 | Glass Production |
| 2.A.4.a | Other Process uses of Carbonates: Ceramics |
| 2.A.4.b | Other Process uses of Carbonates: Soda Ash |
| 2.A.4.d | Other Process uses of Carbonates: Other |
| 2.B | Chemical Industry |
| 2.B.1 | Ammonia Production |
| 2.B.2 | Nitric Acid Production |
| 2.B.3 | Adipic Acid Production |
| 2.B.6 | Titanium Dioxide Production |
| 2.B.7 | Soda Ash Production |
| 2.B.8 | Petrochemical and Carbon Black Production |
| 2.B.8.a | Methanol |
| 2.B.8.b | Ethylene |
| 2.B.8.c | Ethylene Dichloride and Vinyl Chloride Monomer |
| 2.B.8.d | Ethylene Oxide |
| 2.B.8.e | Acrylonitrile |
| 2.B.8.f | Carbon Black |
| 2.B.8.g | Other |
| 2.B.9 | Fluorochemical Production |
| 2.B.9.a.1 | Production of HCFC-22 |
| 2.B.9.a.3 | Other flurochemical production |
| 2.B.10 | Other |
| 2.C | Metal Production |
| 2.C.1 | Iron and Steel production |
| 2.C.1.a | Steel |
| 2.C.1.b | Pig iron |
| 2.C.1.d | Sinter |
| 2.C.2.a | Steel |
| 2.C.2.b | Pig Iron |
| 2.C.2.d | Sinter |
| 2.C.2 | Aluminium production |
| 2.C.3.a | Aluminium Production: CO2 emissions |
| 2.C.3.b | Aluminium Production: PFC emissions |
| 2.C.4 | Magnesium production |
| 2.C.5 | Lead production |
| 2.C.6 | Zinc production |
| 2.C.7 | Other metal production |
| 2.D | Non-energy Products from Fuels and Solvent Use |
| 2.D.1 | Lubricant use |
| 2.D.2 | Paraffin Wax use |
| 2.D.3 | Other |
| 2.E | Electronics Industry |
| 2.E.1 | Integrated Circuit or Semiconductor |
| 2.F | Product Uses as Substitutes for ODS |
| 2.F.1 | Refrigeration and Air Conditioning Equipment |
| 2.F.1.a | Commercial Refrigeration |
| 2.F.1.b | Domestic Refrigeration |
| 2.F.1.c | Industrial Refrigeration |
| 2.F.1.d | Transport Refrigeration |
| 2.F.1.e | Mobile Air-Conditioning |
| 2.F.1.f | Stationary Air-Conditioning |
| 2.F.2 | Foam Blowing Agents |
| 2.F.2.a | Closed Cells |
| 2.F.2.b | Open Cells |
| 2.F.3 | Fire Extinguishers |
| 2.F.4 | Aerosols |
| 2.F.4.a | Metered Dose Inhalers |
| 2.F.4.b | Other |
| 2.F.5 | Solvents |
| 2.F.6 | Other Applications |
| 2.F.6.b | Contained |
| 2.G | Other Product Manufacture and Use |
| 2.G.1 | Electrical Equipment |
| 2.G.2 | SF6 and PFCs from Other Product Use |
| 2.G.2.a | Military Applications |
| 2.G.2.b | Accelerators |
| 2.G.2.e | Other |
| 2.G.3 | N2O from Product Uses |
| 2.G.3.a | Medical Applications |
| 2.G.3.b | N2O from product uses |
| 2.G.4 | Other |
| 2.H | Other |
| 2.H.1 | Pulp and Paper |
| 2.H.2 | Food and beverages industry |
| 3 | Agriculture |
| 3.A | Enteric Fermentation |
| 3.A.1 | Cattle |
| 3.A.1.a | Dairy Cattle |
| 3.A.1.b | Non-Dairy Cattle |
| 3.A.2 | Sheep |
| 3.A.3 | Swine |
| 3.A.4 | Other livestock |
| 3.B | Manure Management |
| 3.B.1 | CH4 emissions |
| 3.B.1.1 | Cattle |
| 3.B.1.1.a | Dairy Cattle |
| 3.B.1.1.b | Non-Dairy Cattle |
| 3.B.1.2 | Sheep |
| 3.B.1.3 | Swine |
| 3.B.1.4 | Other livestock |
| 3.B.2 | N2O and NMVOC emissions |
| 3.B.2.1 | Cattle |
| 3.B.2.1.a | Dairy Cattle |
| 3.B.2.1.b | Non-Dairy Cattle |
| 3.B.2.2 | Sheep |
| 3.B.2.3 | Swine |
| 3.B.2.4 | Other livestock |
| 3.B.2.5 | Indirect N2O Emissions |
| 3.D | Agricultural Soils |
| 3.D.1 | Direct N2O emissions from managed soils |
| 3.D.1.1 | Inorganic N Fertilizers |
| 3.D.1.2 | Organic N Fertilizers |
| 3.D.1.2.a | Manure |
| 3.D.1.2.b | Sewage Sludge |
| 3.D.1.2.c | Other Organic Fertilisers |
| 3.D.1.3 | Urine and Dung Deposited by Grazing Animals |
| 3.D.1.4 | Crop Residues |
| 3.D.1.5 | Mineralization/Immobilization |
| 3.D.1.6 | Cultivation of Organic Soils |
| 3.D.2 | Indirect N2O emissions from managed soils |
| 3.D.2.1 | Atmospheric Deposition |
| 3.D.2.2 | Nitrogen Leaching and Run-off |
| 3.F | Field Burning of Agricultural Residues |
| 3.F.1.1 | Wheat |
| 3.F.1.2 | Barley |
| 3.F.1.4 | Other cereals |
| 3.F.5 | Other residues |
| 3.G | Liming |
| 3.G.1 | Limestone |
| 3.G.2 | Dolomite |
| 3.H | Urea Application |
| 3.J | Overseas Territories and Crown Dependency Emissions |
| 4 | Land use, land use change and forestry |
| 4.A | Forest Land |
| 4.A.1 | Forest Land remaining Forest Land |
| 4.A.2 | Land converted to Forest Land |
| 4.B | Cropland |
| 4.B.1 | Cropland remaining Cropland |
| 4.B.2 | Land converted to Cropland |
| 4.C | Grassland |
| 4.C.1 | Grassland remaining Grassland |
| 4.C.2 | Land converted to Grassland |
| 4.D | Wetlands |
| 4.D.1 | Wetlands remaining Wetlands |
| 4.D.2 | Land converted to Wetlands |
| 4.E | Settlements |
| 4.E.1 | Settlements remaining settlements |
| 4.E.2 | Land converted to Settlements |
| 4.F | Other Land |
| 4.F.1 | Other Land remaining Other Land |
| 4.F.2 | Land converted to Other Land |
| 4.G | Harvested Wood Products |
| 5 | Waste |
| 5.A | Solid Disposable Waste |
| 5.A.1.a | Solid Waste Disposal to land |
| 5.B | Biological Treatment of Solid Waste |
| 5.B.1.a | Municipal Solid Waste: composting |
| 5.B.2.a | Municipal Solid Waste: Anaerobic digestion at biogas facilities |
| 5.C | Incineration and Open Burning of Waste |
| 5.C.1.1.b | Incineration: Sewage Sludge |
| 5.C.1.2.a | Incineration: Municipal Solid Waste |
| 5.C.1.2.b | Incineration: Clinical waste |
| 5.C.2.1.b | Open Burning: other biogenic waste |
| 5.C.2.2.b | Open Burning: accidental building and vehicle fires |
| 5.D | Wastewater Treatment and Discharge |
| 5.D.1 | Domestic |
| 5.D.2 | Industrial |
| 6 | Other |
| Aviation Bunkers | Aviation Bunkers |
| Marine Bunkers | Marine Bunkers |
| non-IPCC | non-IPCC |