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    • The U.S. Greenhouse Gas and Air Pollutant Emissions System (GRA2PES)

    Metadata Updated: September 30, 2025

    To bridge the gap between the development of greenhouse gas (GHG) and air quality (AQ) emission inventories, we developed the GReenhouse gas And Air Pollutant Emissions System (GRA2PES), which provides self-consistent GHG and AQ emissions over the contiguous U.S. This inventory provides emissions at 4 km x 4 km spatial resolution with year, month, day-of-week, and diurnal temporal information. GRA2PES utilizes datasets from the U.S. Energy Information Administration (EIA) and the U.S. Environmental Protection Agency (EPA), and leverages a few well evaluated inventories for specific sectors, including the Fuel-based Oil and Gas (FOG) inventory, the Fuel-based Inventory of Vehicle Emissions (FIVE), and the Volatile Chemical Products (VCP) inventory. GRA2PES provides knowledge of the characteristics of AQ and GHG emissions and their relationships at finer mitigation spatiotemporal scales, which is fundamentally important for modeling AQ co-benefits of GHG emissions reductions. Also, as a self-consistent GHG and AQ emissions inventory, GRA2PES can be utilized in multi-species joint data assimilation (DA) of GHG and AQ emissions, enabling source appointment. We aim to provide GRA2PES as a dataset to inform integrated assessments of climate and air quality for researchers, stakeholders, and policymakers.

    Access & Use Information

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

    Downloads & Resources

    Dates

    Metadata Created Date September 30, 2025
    Metadata Updated Date September 30, 2025
    Data Update Frequency irregular

    Metadata Source

    Harvested from Commerce Non Spatial Data.json Harvest Source

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date September 30, 2025
    Metadata Updated Date September 30, 2025
    Publisher National Institute of Standards and Technology
    Maintainer
    Identifier ark:/88434/mds2-3520
    Data First Published 2024-09-17
    Language en
    Data Last Modified 2024-09-05 00:00:00
    Category Environment:Greenhouse gas measurements
    Public Access Level public
    Data Update Frequency irregular
    Bureau Code 006:55
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    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 fd913622-2885-465c-87d6-784f79f13a8c
    Harvest Source Id bce99b55-29c1-47be-b214-b8e71e9180b1
    Harvest Source Title Commerce Non Spatial Data.json Harvest Source
    Homepage URL https://data.nist.gov/od/id/mds2-3520
    License https://www.nist.gov/open/license
    Old Spatial Contiguous United States at 4 km x 4 km spatial resolution
    Program Code 006:047
    Source Datajson Identifier True
    Source Hash f7d3dfca0638e6b343a04f0c51cd641ed4630fa830d762c915a036bd90989144
    Source Schema Version 1.1
    Spatial
    Temporal 2021-01-01/2021-12-31

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