New Report on Air Quality Trends Associated with Unconventional Oil & Gas Development

The study assessed long-term trends in air quality in oil & gas producing regions in Texas & Colorado. Learn More!

Nitrogen Oxides

This page has a list of publications and news articles related to Air Pollution - Nitrogen Oxides. Find more information about our research on Air Pollution.

Research Report 242
Gunnar W. Schade
Detlev Helmig
Katherine Potter
Michel Stahli
Gabriel Greenberg
2026

This report presents a study led by Gunnar W. Schade (Texas A&M University) and Detlev Helmig (Boulder AIR). Schade, Helmig, and colleagues evaluated long-term air quality trends across unconventional oil and gas development regions in the United States, primarily in Texas (1997–2023) and Colorado (2008–2024).

Research Report 238
Michael Kleeman
Claudia Nau
Jason Su
Deborah R. Young
Rebecca Butler
Lin-Syuan Yang
Christina Batteate
Sarah Eng
Richard T. Burnett
Michael Jerrett
2026

This report presents a study led by Michael Kleeman at the University of California, Davis. Kleeman and colleagues evaluated associations between estimated outdoor air pollution concentrations and risk of COVID-19 disease, COVID-19 disease progression or recovery, deaths due to COVID-19, and long COVID- 19 conditions among a study population in Southern California.

Research Report 237
Tanya L Alderete
Elizabeth A. Holzhausen
Donghai Liang
Roshonda B. Jones
Fredrick Lurmann
Michael I. Goran
et al.
2026

This report presents a study led by Tanya L. Alderete, a recipient of HEI’s 2019 Walter A. Rosenblith New Investigator Award, at Johns Hopkins Bloomberg School of Public Health in Baltimore, Maryland. Alderete and colleagues examined whether prenatal or postnatal exposures to air pollution were associated with changes in the infant gut microbiome and fecal metabolome during the first 2 years of life.

Research Report 236
Payam Dadvand
Jordi Sunyer
Ioar Rivas
Maria Dolores Gómez-Roig
Elisa Llurba
Maria Foraster
et al.
2026

This report presents a study led by co-principal investigators Payam Dadvand and Jordi Sunyer at the Barcelona Institute for Global Health (ISGlobal). Dadvand, Sunyer, and colleagues examined the effects of prenatal exposure to traffic-related air pollution on fetal growth and placental function in a newly established cohort of 1,080 women living in Barcelona, Spain.

Research Report 231
Meredith Franklin
Gunnar W. Schade
Detlev Helmig
Lara Cushing
Jill Johnston
2025

This report presents a study led by Meredith Franklin at the University of Toronto. Franklin and colleagues measured air pollutants such as ozone and volatile organic compounds; greenhouse gas emissions such as methane, carbon dioxide, and nitrous oxide; airborne radioactivity; and noise associated with UOGD activities in two shale production basins during a yearlong study period.

Research Report 230
Jeanette Stingone
Stephanie Lovinsky-Desir
Sneha Kannoth
Mehr Shafiq
Cong Zhang
Sandra Albrecht
et al.
2025

This report presents a study led by Jeanette A. Stingone at the Columbia University Mailman School of Public Health. Stingone and colleagues evaluated whether associations between long-term air pollution exposures and severe COVID-19 health outcomes varied by New York City neighborhoods that differed in environmental vulnerability, as defined by social and structural characteristics.