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.

States, Provinces, and Territories

To search text: use the search field below to filter records by text included in the results table.
State/Province/Territory Abbreviation is part of
Alberta AB Canada
Alabama AL United States
Alaska AK United States
Arizona AZ United States
Arkansas AR United States
British Columbia BC Canada
California CA United States
Colorado CO United States
Connecticut CT United States
Delaware DE United States
District of Columbia DC United States
Florida FL United States
Georgia GA United States
Hawaii HI United States
Idaho ID United States
Illinois IL United States
Indiana IN United States
Iowa IA United States
Kansas KS United States
Kentucky KY United States
Louisiana LA United States
Maine ME United States
Maryland MD United States
Massachusetts MA United States
Manitoba MB Canada
Michigan MI United States
Minnesota MN United States
Mississippi MS United States
Missouri MO United States
Montana MT United States
New Brunswick NB Canada
Nebraska NE United States
Nevada NV United States
New Hampshire NH United States
New Jersey NJ United States
New Mexico NM United States
New York NY United States
Newfoundland and Labrador NL Canada
North Carolina NC United States
North Dakota ND United States
Nova Scotia NS Canada
Northwest Territories NT Canada
Nunavut NU Canada
Ohio OH United States
Oklahoma OK United States
Ontario ON Canada
Oregon OR United States
Prince Edward Island PE Canada
Pennsylvania PA United States
Québec QC Canada
Rhode Island RI United States
Saskatchewan SK Canada
South Carolina SC United States
South Dakota SD United States
Tennessee TN United States
Texas TX United States
Utah UT United States
Vermont VT United States
Virginia VA United States
Washington WA United States
West Virginia WV United States
Wisconsin WI United States
Wyoming WY United States
Yukon YT Canada