The North American Portal on Climate Pollutants makes air pollutant emissions inventory data available to users in an intuitive, easy-to-navigate format. Searching the database involves using the Search Tools in the left-hand sidebar menu to query the available inventories. For example:
- You can use the Browse by Inventory search tool to view a list of all the inventories in the database, then click on any inventory name to explore the data via a variety of options (e.g., place, pollutant, source category). Note: throughout this website, textual information taken from inventories and guidance documents is included in the language in which it was originally published.
- If you prefer to search the available inventories using a refined query, you may wish to use the Emission Metrics (Advanced Search) tool: 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, or parameters. 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 other search tools in the left-hand sidebar menu serve as additional ways to explore air pollutant emissions inventory data. Clicking on any of these will bring users to a Query page, featuring various sources of information such as “Quick Links” and a drop-down list of associated variables from which to further refine the query. Clicking on the Source Categories search tool will bring users to a query page with Quick Links to information relating to source categories. Alternately, users can select from the associated variables contained in the drop-down list (e.g., if the user wishes to see which source categories are associated with emissions of black carbon, or which source categories are included in a specific inventory).
- Depending on the options selected, users will either be directed to additional selection options to further refine their search, or to a Search Results page displaying the results of their query. This page also includes tools for further refining, displaying and exporting the 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.
Please read the About page for more information about the North American Portal on Climate Pollutants.