PUBLICATIONS

Research described in these articles was conducted under contract to the Health Effects Institute (HEI), an organization jointly funded by the United States Environmental Protection Agency (EPA) (Contract No. 68HERC19D0010) and certain oil and natural gas companies. Although the research was produced with partial funding by EPA and industry, they have not been subject to their review, and therefore the research does not necessarily reflect the views of the Agency or the oil and natural gas industry, and no official endorsement by the Agency or the industry should be inferred.

TRACER Publications

MARCELLUS

  1. Spatial and Temporal Variability in Atmospheric Emissions from Oil and Gas Sector Sources in the Marcellus Production Region - Chen, et al. (2025)

EAGLE FORD

  1. Source Attribution of Elevated Ethane Concentrations Detected by Regional Monitors in Oil and Gas Production Regions - Graves, et al. (2025)

  2. Fine Scale Spatial and Temporal Allocation of NOx Emissions from Unconventional Oil and Gas Development Can Result in Increased Predicted Regional Ozone Formation - Modi, et al. (2024)

Other References

  1. Estimating combustion emissions from well sites: EPA Nonpoint Oil and Gas Emissions Estimation Tool

  2. Estimating non-combustion emissions from well sites: Methane Emission Estimation Tool (MEET) 

  3. Estimating methane emissions from gathering site : Zimmerle, et al. (2020) correlation between site throughput and methane emissions

  4. Data source for processing and transmission emissions: EPA Facility Level Greenhouse Gas Emission Data (FLIGHT)

  5. Estimating fraction of combustion methane from gathering sites: Vaughn, et al. (2021)

  6. Estimating fraction of combustion methane from processing and transmission sites: EPA Greenhouse Gas Inventory

  7. Estimating NOx emissions from midstream sites and flares: EPA AP-42 emission factors from stationary sources

  8. Reported annual gas flared volume: Annual gas flare volume estimated by Earth Observation Group

  9. Raw satellite data for estimating flares: VIIRS satellite detections

  10. Estimating methane emissions from natural gas processing plants: Mitchell, et al. Measurements of methane emissions from natural gas  gathering facilities and processing plants: measurement results (2015)

  11. Land-use data: National Land-Use Consortium Database

  12. Elevation data: National Elevation Dataset (3D Elevation Program Products)

  13. Onsite meteorological data and hydrocarbon measurements: TCEQ TAMIS data request portal

  14. Surface meteorological data (hourly): Integrated surface database

  15. Surface meteorological data (5-minute): Automated surface observation system

  16. Numerical weather prediction products (meteorological data): High-resolution rapid refresh