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Federal
National Greenhouse Gas Emission Inventory
U.S. Environmental Protection Agency —
The National Greenhouse Gas Emission Inventory contains information on direct emissions of greenhouse gases as well as indirect or potential emissions of greenhouse... -
Federal
NIST Reference Fluid Thermodynamic and Transport Properties Database (REFPROP) Version 9 - SRD 23
National Institute of Standards and Technology —
**NOTICE: THIS VERSION OF REFPROP (9.1) has been superseded by Version 10: https://doi.org/10.18434/T4/1502528 ** NIST Standard Reference Data 23 contains revised... -
Federal
National Greenhouse Gas Emission Inventory (EV-GHG)
U.S. Environmental Protection Agency —
The EV-GHG Mobile Source Data asset contains measured mobile source GHG emissions summary compliance information on light-duty vehicles, by model, for certification... -
Federal
Fuel Economy Label and CAFE Data
U.S. Environmental Protection Agency —
The Engine and Vehicle Compliance Certification and Fuel Economy Inventory contains measured emissions and fuel economy compliance information for light duty... -
Federal
Federal Lands Greenhouse Gas Emissions and Sequestration in the United States: Estimates for 2005-22 - Data
Department of the Interior —
This dataset includes eighteen years of emissions and sequestration estimates (2005-2022) in two separate tables. Table 1 includes the greenhouse gas emissions from... -
Federal
Ambient Air Quality Data Inventory
U.S. Environmental Protection Agency —
The Office of Air and Radiation's (OAR) Ambient Air Quality Data (Current) contains ambient air pollution data collected by EPA, other federal agencies, as well as... -
Federal
Greenhouse Gas Data Publication Tool
U.S. Environmental Protection Agency —
This tool to gives you access to greenhouse gas data reported to EPA by large facilities and suppliers in the United States through EPA's Greenhouse Gas Reporting... -
Federal
Energy-Related Environmental Data
Department of Energy —
Environmental data on carbon dioxide emissions from energy and industry, by consuming sector (residential, commercial, industrial, transportation, electric power),... -
Federal
United States Documented Unplugged Orphaned Oil and Gas Well Dataset
Department of the Interior —
The United States Documented Unplugged Orphaned Oil and Gas Well (DOW) dataset contains 117,672 wells in 27 states. The definition of an orphaned oil or gas well... -
Federal
In Situ Carbon Dioxide, Methane, and Carbon Monoxide Mole Fractions from the Los Angeles Megacity Carbon Project
National Institute of Standards and Technology —
NOTE: please see the latest (April 2025) update at https://doi.org/10.18434/mds2-3814 . Hourly observations of carbon dioxide (CO2) and methane (CH4) mole fractions... -
Federal
Observations of carbon dioxide (CO2), methane (CH4), and carbon monoxide (CO) mole fractions from the Los Angeles Megacity Carbon Project
National Institute of Standards and Technology —
Updated April 2025. Here we provide hourly observations of carbon dioxide (CO2), methane (CH4), and carbon monoxide (CO) mole fractions in dry air from tower- and... -
Federal
National Greenhouse Gas Emission Inventory (EV-GHG)
U.S. Environmental Protection Agency —
The EV-GHG Mobile Source Data asset contains measured mobile source GHG emissions summary compliance information on light-duty vehicles, by model, for certification... -
Federal
Historical Ambient Air Quality Data Inventory
U.S. Environmental Protection Agency —
The Historical Ambient Air Quality Data Inventory contains measured and estimated data on ambient air pollution for use in assessing air quality, assisting in... -
Federal
Mobile Source Emissions Regulatory Compliance Data Inventory
U.S. Environmental Protection Agency —
The Mobile Source Emissions Regulatory Compliance Data Inventory data asset contains measured summary compliance information on light-duty, heavy-duty, and non-road... -
Federal
Fuel Economy Label and CAFE Data Inventory
U.S. Environmental Protection Agency —
The Fuel Economy Label and CAFE Data asset contains measured summary fuel economy estimates and test data for light-duty vehicle manufacturers by model for... -
Federal
Complete 2010 Greenhouse Gas Data
U.S. Environmental Protection Agency —
These files contain the publicly available data from the GHG Reporting Program for 2010. This data includes non-confidential data reported by facilities that directly... -
Federal
Fuel Economy Label and CAFE Data
U.S. Environmental Protection Agency —
The Engine and Vehicle Compliance Certification and Fuel Economy Inventory contains measured emissions and fuel economy compliance information for light duty... -
Federal
Mobile Source Emissions Regulatory Compliance Data Inventory
U.S. Environmental Protection Agency —
The Mobile Source Emissions Regulatory Compliance Data Inventory data asset contains measured summary compliance information on light-duty, heavy-duty, and non-road... -
Federal
National Greenhouse Gas Emission Inventory
U.S. Environmental Protection Agency —
The National Greenhouse Gas Emission Inventory contains information on direct emissions of greenhouse gases as well as indirect or potential emissions of greenhouse... -
Federal
Mobile Source Emissions Regulatory Compliance Data
U.S. Environmental Protection Agency —
The Engine and Vehicle Compliance Certification and Fuel Economy Inventory contains measured emissions and fuel economy compliance information for all types of...