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.

Quick Links

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.

Quick Links

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.

Quick Links

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.

Documentation

The North American Portal on Climate Pollutants seeks to make air pollutant emissions inventory data available to users in an intuitive, easy to navigate format. The website contains the following tools and pages:

  • Search Tools included in the left-hand sidebar menu allow users to search the available inventories. Users can search the database for information by inventory, place, source category, pollutant, estimation methodology, emission metric, or guidance document.
  • Query Pages associated with the search tool selected. These pages contain various sources of information, such as “Quick Links” and drop-down lists of associated variables from which to choose to further refine the search.
  • Search Results pages displaying the results of the query. These pages also feature tools for further refining, displaying and exporting search results. Users seeking to access a large dataset may export a CSV spreadsheet of any report, or write their own application programming interface (API) queries to generate unique spreadsheet exports. They may also write queries to export JSON or XML for use in their own applications and reporting programs.

In addition, the North American Portal on Climate Pollutants is built upon an application programming interface (API) that users are encouraged to employ for their own reports and web applications. Users can also access documentation on the API, which is designed to enhance the distribution of air pollutant emissions inventory data by making them available to researchers and application developers in JSON, XML, and CSV formats.

The Data Dictionary enhances the ability to compare inventory data by creating a common framework that may be used for applying semantic tags to the data.