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    • Emissions Modeling Clearinghouse

    Metadata Updated: February 10, 2026

    The Emissions Modeling Clearinghouse (EMCH) supports and promotes emissions modeling activities both internal and external to the EPA. Through this site, the EPA distributes and documents emissions datasets that are formatted for use in emissions models, which are used for emissions preparation for air quality modeling. The inventory data on this site are dervied from previous and current versions of the National Emission Inventory (NEI). This site also distributes the EPA's latest versions of ancillary datasets used to support the temporal, spatial, speciation, and future-year projection of these emissions.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    No file downloads have been provided. The publisher may provide downloads in the future or they may be available from their other links.

    References

    https://edg.epa.gov/metadata/rest/document?id=%7B01CD5875-92B2-4DCF-996A-71B09CAC2679%7D
    https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7B01CD5875-92B2-4DCF-996A-71B09CAC2679%7D

    Dates

    Metadata Created Date January 30, 2026
    Metadata Updated Date February 10, 2026
    Data Update Frequency irregular

    Metadata Source

    Harvested from EPA Non Geo Repository

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 30, 2026
    Metadata Updated Date February 10, 2026
    Publisher U.S. EPA Office of Air and Radiation (OAR) - Office of Air Quality Planning and Standards (OAQPS)
    Maintainer
    Identifier 01CD5875-92B2-4DCF-996A-71B09CAC2679
    Data First Published 2014-01-01
    Language en-US
    Data Last Modified 2014-01-01
    Public Access Level public
    Data Update Frequency irregular
    Bureau Code 020:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://edg.epa.gov/data/nongeo_data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id c65570ac-2757-42b2-ae5e-ec374f731956
    Harvest Source Id 9c1c2b5b-7925-4ca2-a663-ca2131653db1
    Harvest Source Title EPA Non Geo Repository
    License https://edg.epa.gov/EPA_Data_License.htm
    Old Spatial -180.0,18.0,-66.0,72.0
    Program Code 020:072
    Related Documents https://edg.epa.gov/metadata/rest/document?id=%7B01CD5875-92B2-4DCF-996A-71B09CAC2679%7D, https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7B01CD5875-92B2-4DCF-996A-71B09CAC2679%7D
    Source Datajson Identifier True
    Source Hash 0f87f9ec3610f60bdb026efcf177c62a0b9cf99c568afc898683d6829bb1a314
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -180.0, 18.0, -180.0, 72.0, -66.0, 72.0, -66.0, 18.0, -180.0, 18.0}

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