Search Emission Metrics

This tool returns emission metrics associated with your query. An emission metric is an estimate of a quantity of pollutant emitted within defined geographic, temporal, sectoral, and/or procedural boundaries. Air pollutant inventories, including those found in this Portal, typically feature the following parameters: Place (country or state/province/territory); Year (or range of years); Pollutant (or pollutant family); Source Category (or subcategory); and Estimation Methodology. Note: Fuel (another key parameter) is not included at this time, because it is not well-defined in the available inventories.

The parameters included in each inventory are shown in the Inventory Overview table below.

Select from the parameters below to refine your search. To ensure that your query returns results, refer to the Inventory Overview table to select parameters that are compatible with one another. Note: When selecting a Source Category or Estimation Methodology, we recommend that you click on the “i” icons for more information.

Select the year or years of interest for your search.


Select one or more country, province, state, or territory of interest.


Select one or more pollutant, or pollutant group, of interest.


Select from the list of source categories below if you wish to refine your search by emitting activity or economic sector.


Select from the list below if you wish to further refine your search by estimation methodology.

Search Places

Use the links below to select countries, states, provinces, or territories.

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North American Countries

Canada

Canadian Provinces

United States

American States

Mexico

Mexican States

Search Pollutants

A pollutant is a chemical or agent present in the atmosphere that may contribute to climate change or become hazardous to human health.

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All pollutants

Black carbon (BC) and related pollutants

Criteria air contaminants (CAC)

Greenhouse gases (GHG)

Short-lived climate pollutants (SLCP)

Select from either the list of source categories or the list of estimation methodologies below to see the associated pollutant(s). Clicking on a pollutant name will redirect you to the inventory(ies) that have associated pollutant data.


Select from the list of source categories below if you wish to refine your search by emitting activity or economic sector.


Select from the list below if you wish to further refine your search by estimation methodology.

Search Source Categories

A source category is a classification of emissions by emitting activity or economic sector.

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CRF 2006 Source Categories

Use this search tool to obtain data for a selected source category, by selecting from either the list of guidance documents or the list of pollutants below.


Select one or more pollutant, or pollutant group, of interest.

Search Estimation Methodologies

An estimation methodology is a method and/or algorithm used to estimate the total emissions of one or more pollutants resulting from an emitting activity.

Quick Links

Revised 1996 IPCC Guidelines

2006 IPCC Guidelines

Use this search tool to obtain estimation methodologies for a selected Source Category or Pollutant.


Select from the list of source categories below if you wish to refine your search by emitting activity or economic sector.


Select one or more pollutant, or pollutant group, of interest.

Source Categories

A source category is a classification of emissions by emitting activity or economic sector.

To search text: use the search field below to filter records by text included in the results table.
Source Category Code Guidance Document Parent Source Category
Energy 1 CRF (2006) --
Fuel Combustion Activities 1A CRF (2006) Energy
Energy Industries 1A1 CRF (2006) Fuel Combustion Activities
Public Electricity and Heat Production 1A1a CRF (2006) Energy Industries
Public Electricity Generation 1A1ai CRF (2006) Public Electricity and Heat Production
Public Combined Heat and Power Generation (CHP) 1A1aii CRF (2006) Public Electricity and Heat Production
Public Heat Plants 1A1aiii CRF (2006) Public Electricity and Heat Production
Petroleum Refining 1A1b CRF (2006) Energy Industries
Manufacture of Solid Fuels and Other Energy Industries 1A1c CRF (2006) Energy Industries
Manufacture of Solid Fuels 1A1ci CRF (2006) Manufacture of Solid Fuels and Other Energy Industries
Other Energy Industries 1A1cii CRF (2006) Manufacture of Solid Fuels and Other Energy Industries
Manufacturing Industries and Construction (ISIC) 1A2 CRF (2006) Fuel Combustion Activities
Iron and Steel 1A2a CRF (2006) Manufacturing Industries and Construction (ISIC)
Non-Ferrous Metals 1A2b CRF (2006) Manufacturing Industries and Construction (ISIC)
Chemicals 1A2c CRF (2006) Manufacturing Industries and Construction (ISIC)
Pulp, Paper and Print 1A2d CRF (2006) Manufacturing Industries and Construction (ISIC)
Food Processing, Beverages and Tobacco 1A2e CRF (2006) Manufacturing Industries and Construction (ISIC)
Other 1A2f CRF (2006) Manufacturing Industries and Construction (ISIC)
Cement 1A2fi CRF (2006) Other
Mining 1A2fii CRF (2006) Other
Construction 1A2fiii CRF (2006) Other
Other Manufacturing 1A2fiv CRF (2006) Other
Transport 1A3 CRF (2006) Fuel Combustion Activities
Civil Aviation 1A3a CRF (2006) Transport
International Aviation 1A3ai CRF (2006) Civil Aviation
Domestic 1A3aii CRF (2006) Civil Aviation
Road Transportation 1A3b CRF (2006) Transport
Cars 1A3bi CRF (2006) Road Transportation
Light Duty Trucks 1A3bii CRF (2006) Road Transportation
Heavy Duty Trucks and Buses 1A3biii CRF (2006) Road Transportation
Motorcycles 1A3biv CRF (2006) Road Transportation
Evaporative Emissions from Vehicles 1A3bv CRF (2006) Road Transportation
Railways 1A3c CRF (2006) Transport
Navigation 1A3d CRF (2006) Transport
International Marine (Bunkers) 1A3di CRF (2006) Navigation
National Navigation 1A3dii CRF (2006) Navigation
Other Transportation 1A3e CRF (2006) Transport
Pipeline Transport 1A3ei CRF (2006) Other Transportation
Off-road 1A3eii CRF (2006) Other Transportation
Other Sectors 1A4 CRF (2006) Fuel Combustion Activities
Commercial/Institutional 1A4a CRF (2006) Other Sectors
Residential 1A4b CRF (2006) Other Sectors
Agriculture/Forestry/Fishing 1A4c CRF (2006) Other Sectors
Stationary 1A4ci CRF (2006) Agriculture/Forestry/Fishing
Off-road Vehicles and Other Machinery 1A4cii CRF (2006) Agriculture/Forestry/Fishing
Fishing 1A4ciii CRF (2006) Agriculture/Forestry/Fishing
Other 1A5 CRF (2006) Fuel Combustion Activities
Stationary 1A5a CRF (2006) Other
Mobile 1A5b CRF (2006) Other
Fugitive Emissions from Fuels 1B CRF (2006) Energy
Solid Fuels 1B1 CRF (2006) Fugitive Emissions from Fuels
Coal Mining 1B1a CRF (2006) Solid Fuels
Underground Mines 1B1ai CRF (2006) Coal Mining
Surface Mines 1B1aii CRF (2006) Coal Mining
Solid Fuel Transformation 1B1b CRF (2006) Solid Fuels
Other 1B1c CRF (2006) Solid Fuels
Oil and Natural Gas 1B2 CRF (2006) Fugitive Emissions from Fuels
Oil 1B2a CRF (2006) Oil and Natural Gas
Exploration 1B2ai CRF (2006) Oil
Production 1B2aii CRF (2006) Oil
Transport 1B2aiii CRF (2006) Oil
Refining/Storage 1B2aiv CRF (2006) Oil
Distribution of Oil Products 1B2av CRF (2006) Oil
Other 1B2avi CRF (2006) Oil
Natural Gas 1B2b CRF (2006) Oil and Natural Gas
Production/Processing 1B2bi CRF (2006) Natural Gas
Transmission/Distribution 1B2bii CRF (2006) Natural Gas
Other leakage 1B2biii CRF (2006) Natural Gas
Venting and Flaring 1B2c CRF (2006) Oil and Natural Gas
Oil 1B2ci CRF (2006) Venting and Flaring
Gas 1B2cii CRF (2006) Venting and Flaring
Combined 1B2ciii CRF (2006) Venting and Flaring
Other 1B2d CRF (2006) Oil and Natural Gas
Industrial Processes 2 CRF (2006) --
Mineral Products 2A CRF (2006) Industrial Processes
Cement Production 2A1 CRF (2006) Mineral Products
Lime Production 2A2 CRF (2006) Mineral Products
Limestone and Dolomite Use 2A3 CRF (2006) Mineral Products
Soda Ash Production and Use 2A4 CRF (2006) Mineral Products
Asphalt Roofing 2A5 CRF (2006) Mineral Products
Road Paving with Asphalt 2A6 CRF (2006) Mineral Products
Other 2A7 CRF (2006) Mineral Products
Chemical Industry 2B CRF (2006) Industrial Processes
Ammonia Production 2B1 CRF (2006) Chemical Industry
Nitric Acid Production 2B2 CRF (2006) Chemical Industry
Adipic Acid Production 2B3 CRF (2006) Chemical Industry
Carbide Production 2B4 CRF (2006) Chemical Industry
Other 2B5 CRF (2006) Chemical Industry
Metal Production 2C CRF (2006) Industrial Processes
Iron and Steel Production 2C1 CRF (2006) Metal Production
Ferroalloys Production 2C2 CRF (2006) Metal Production
Aluminium Production 2C3 CRF (2006) Metal Production
SF6 Used in Aluminium and Magnesium Foundries 2C4 CRF (2006) Metal Production
Other 2C5 CRF (2006) Metal Production
Other Production 2D CRF (2006) Industrial Processes
Pulp and Paper 2D1 CRF (2006) Other Production
Food and Drink 2D2 CRF (2006) Other Production
Production of Halocarbons and Sulphur Hexafluoride 2E CRF (2006) Industrial Processes
By-product Emissions 2E1 CRF (2006) Production of Halocarbons and Sulphur Hexafluoride
Fugitive Emissions 2E2 CRF (2006) Production of Halocarbons and Sulphur Hexafluoride
Other 2E3 CRF (2006) Production of Halocarbons and Sulphur Hexafluoride
Consumption of Halocarbons and Sulphur Hexafluoride 2F CRF (2006) Industrial Processes
Refrigeration and Air Conditioning Equipment 2F1 CRF (2006) Consumption of Halocarbons and Sulphur Hexafluoride
Foam Blowing 2F2 CRF (2006) Consumption of Halocarbons and Sulphur Hexafluoride
Fire Extinguishers 2F3 CRF (2006) Consumption of Halocarbons and Sulphur Hexafluoride
Aerosols 2F4 CRF (2006) Consumption of Halocarbons and Sulphur Hexafluoride
Solvents 2F5 CRF (2006) Consumption of Halocarbons and Sulphur Hexafluoride
Other Applications Using ODS Substitutes 2F6 CRF (2006) Consumption of Halocarbons and Sulphur Hexafluoride
Semiconductor Manufacture 2F7 CRF (2006) Consumption of Halocarbons and Sulphur Hexafluoride
Electrical Equipment 2F8 CRF (2006) Consumption of Halocarbons and Sulphur Hexafluoride
Other 2F9 CRF (2006) Consumption of Halocarbons and Sulphur Hexafluoride
Other 2G CRF (2006) Industrial Processes
Solvent and Other Product Use 3 CRF (2006) --
Paint Application 3A CRF (2006) Solvent and Other Product Use
Degreasing and Dry Cleaning 3B CRF (2006) Solvent and Other Product Use
Chemical Product, Manufacture and Processing 3C CRF (2006) Solvent and Other Product Use
Other 3D CRF (2006) Solvent and Other Product Use
Use of N2O for Anaesthesia 3D1 CRF (2006) Other
N2O from Fire Extinguishers 3D2 CRF (2006) Other
N2O from Aerosol Cans 3D3 CRF (2006) Other
Other Use of N2O 3D4 CRF (2006) Other
Other 3D5 CRF (2006) Other
Agriculture 4 CRF (2006) --
Enteric Fermentation 4A CRF (2006) Agriculture
Cattle 4A1 CRF (2006) Enteric Fermentation
Dairy 4A1a CRF (2006) Cattle
Non-Dairy 4A1b CRF (2006) Cattle
Buffalo 4A2 CRF (2006) Enteric Fermentation
Sheep 4A3 CRF (2006) Enteric Fermentation
Goats 4A4 CRF (2006) Enteric Fermentation
Camels and Llamas 4A5 CRF (2006) Enteric Fermentation
Horses 4A6 CRF (2006) Enteric Fermentation
Mules and Asses 4A7 CRF (2006) Enteric Fermentation
Swine 4A8 CRF (2006) Enteric Fermentation
Poultry 4A9 CRF (2006) Enteric Fermentation
Other 4A10 CRF (2006) Enteric Fermentation
Manure Management 4B CRF (2006) Agriculture
Cattle 4B1 CRF (2006) Manure Management
Other Livestock 4B10 CRF (2006) Manure Management
Dairy 4B1a CRF (2006) Cattle
Non-Dairy 4B1b CRF (2006) Cattle
Buffalo 4B2 CRF (2006) Manure Management
Sheep 4B3 CRF (2006) Manure Management
Goats 4B4 CRF (2006) Manure Management
Camels and Llamas 4B5 CRF (2006) Manure Management
Horses 4B6 CRF (2006) Manure Management
Mules and Asses 4B7 CRF (2006) Manure Management
Swine 4B8 CRF (2006) Manure Management
Poultry 4B9 CRF (2006) Manure Management
Anaerobic 4B11 CRF (2006) Manure Management
Liquid Systems 4B12 CRF (2006) Manure Management
Solid storage and Dry Lot 4B13 CRF (2006) Manure Management
Other 4B14 CRF (2006) Manure Management
Rice Cultivation 4C CRF (2006) Agriculture
Irrigated 4C1 CRF (2006) Rice Cultivation
Continuously Flooded 4C1a CRF (2006) Irrigated
Intermittently Flooded 4C1b CRF (2006) Irrigated
Single aeration 4C1bi CRF (2006) Intermittently Flooded
Multiple aeration 4C1bii CRF (2006) Intermittently Flooded
Rainfed 4C2 CRF (2006) Rice Cultivation
Flood prone 4C2a CRF (2006) Rainfed
Drought prone 4C2b CRF (2006) Rainfed
Deep Water 4C3 CRF (2006) Rice Cultivation
Water depth 50 ? 100 cm 4C3a CRF (2006) Deep Water
Water depth 100 cm 4C3b CRF (2006) Deep Water
Other 4C4 CRF (2006) Rice Cultivation
Agricultural Soils 4D CRF (2006) Agriculture
Direct Soil Emissions 4D1 CRF (2006) Agricultural Soils
Pasture, Range and Paddock Manure 4D2 CRF (2006) Agricultural Soils
Indirect Emissions 4D3 CRF (2006) Agricultural Soils
Other 4D4 CRF (2006) Agricultural Soils
Prescribed Burning of Savannas 4E CRF (2006) Agriculture
Field Burning of Agricultural Residues 4F CRF (2006) Agriculture
Cereals 4F1 CRF (2006) Field Burning of Agricultural Residues
Pulse 4F2 CRF (2006) Field Burning of Agricultural Residues
Tuber and Root 4F3 CRF (2006) Field Burning of Agricultural Residues
Sugar Cane 4F4 CRF (2006) Field Burning of Agricultural Residues
Other 4F5 CRF (2006) Field Burning of Agricultural Residues
Other 4G CRF (2006) Agriculture
Land-Use Change & Forestry 5 CRF (2006) --
Forest Land 5A CRF (2006) Land-Use Change & Forestry
Forest Land Remaining Forest Land 5A1 CRF (2006) Forest Land
Land Converted to Forest Land 5A2 CRF (2006) Forest Land
Cropland 5B CRF (2006) Land-Use Change & Forestry
Cropland Remaining Cropland 5B1 CRF (2006) Cropland
Land Converted to Cropland 5B2 CRF (2006) Cropland
Grassland 5C CRF (2006) Land-Use Change & Forestry
Grassland Remaining Grassland 5C1 CRF (2006) Grassland
Land Converted to Grassland 5C2 CRF (2006) Grassland
Wetlands 5D CRF (2006) Land-Use Change & Forestry
Wetlands Remaining Wetlands 5D1 CRF (2006) Wetlands
Land Converted to Wetlands 5D2 CRF (2006) Wetlands
Settlements 5E CRF (2006) Land-Use Change & Forestry
Settlements Remaining Settlements 5E1 CRF (2006) Settlements
Land Converted to Settlements 5E2 CRF (2006) Settlements
Other Land 5F CRF (2006) Land-Use Change & Forestry
Other Land Remaining Other Land 5F1 CRF (2006) Other Land
Land Converted to Other Land 5F2 CRF (2006) Other Land
Other 5G CRF (2006) Land-Use Change & Forestry
Waste 6 CRF (2006) --
Solid Waste Disposal on Land 6A CRF (2006) Waste
Managed Waste Disposal on Land 6A1 CRF (2006) Solid Waste Disposal on Land
Unmanaged Waste Disposal Sites 6A2 CRF (2006) Solid Waste Disposal on Land
Other 6A3 CRF (2006) Solid Waste Disposal on Land
Wastewater Handling 6B CRF (2006) Waste
Industrial Wastewater 6B1 CRF (2006) Wastewater Handling
Domestic and Commercial Wastewater 6B2 CRF (2006) Wastewater Handling
Other 6B3 CRF (2006) Wastewater Handling
Waste Incineration 6C CRF (2006) Waste
Other 6D CRF (2006) Waste
Other 7 CRF (2006) --
Memo Items memo-items CRF (2006) --
International Bunkers int-bunkers CRF (2006) Memo Items
International Aviation int-aviation CRF (2006) International Bunkers
International Water-borne Transport int-marine CRF (2006) International Bunkers
Multilateral Operations multilateral-op CRF (2006) Memo Items
CO2 from Biomass Combustion for Energy Production co2-biomass CRF (2006) Memo Items