Disproportionate Clean Air Act violations occur in communities of color throughout the United States DOI Creative Commons
Gaige Hunter Kerr,

Richard A Stedman,

Susan C. Anenberg

et al.

Environmental Research Letters, Journal Year: 2024, Volume and Issue: 19(5), P. 054052 - 054052

Published: April 22, 2024

Abstract The United States (U.S.) Clean Air Act seeks to prevent and abate ambient air pollution, while also providing a framework identify address violations. Little research has examined where or how frequently violations of the occur marginalized communities may bear disproportionate share these violations, despite fact that experience persistent, pollution levels associated health impacts. Here, we leverage data on enforcement compliance together with demographic show most serious Act—high priority (HPVs)—predominantly in color throughout U.S. Specifically, find number facilities an HPV within largest proportion people is nearly two times greater than smallest proportion. Only 6% their timeframe mandated by Environmental Protection Agency, larger disadvantaged do not this compared non-disadvantaged communities. Enforcing agencies should improve are communicated addressed. To end, suggest several ways empower individuals easy-to-access related practices reporting be standardized across enforcing agencies.

Language: Английский

Global, regional and city scale changes in atmospheric NO₂ with environmental laws and policies DOI

Sai Amritha,

Hamza Varikoden, Vikas Patel

et al.

Sustainable Cities and Society, Journal Year: 2024, Volume and Issue: 112, P. 105617 - 105617

Published: June 21, 2024

Language: Английский

Citations

8
Air pollution impacts from warehousing in the United States uncovered with satellite data DOI Creative Commons
Gaige Hunter Kerr, Michelle Meyer, Daniel L. Goldberg

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: July 24, 2024

Abstract Regulators, environmental advocates, and community groups in the United States (U.S.) are concerned about air pollution associated with proliferating e-commerce warehousing industries. Nationwide datasets of warehouse locations, traffic, satellite observations traffic-related pollutant nitrogen dioxide (NO 2 ) provide a unique capability to evaluate quality equity impacts these geographically-dispersed emission sources. Here, we show that nearly 150,000 warehouses U.S. worsen local an average near-warehouse NO enhancement 20% disproportionately located marginalized minoritized communities. Near-warehouse truck traffic significantly increase as density number loading docks parking spaces increase. Increased satellite-observed near underscores need for indirect source rules, incentives replacing old trucks, corporate commitments towards electrification. Future ground-based monitoring campaigns may help track individual or small clusters facilities.

Language: Английский

Citations

6
Intercomparison of Modeled Urban-Scale Vehicle NOx and PM2.5 Emissions–Implications for Equity Assessments DOI Creative Commons
Victoria A. Lang, Sara F Camilleri, Suzan van der Lee

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 27, 2025

Accurate characterization of emissions is essential for understanding spatiotemporal variations air pollutants and their societal impacts, including population exposure, health outcomes, environmental justice implications. Characterizing from the transportation sector challenging due to uncertainties in emission-producing processes fleet composition activity–factors that lead differences across modeled vehicle data sets. Here, we compare four sets─Fuel-Inventory Vehicle Emissions, Neighborhood Emission Mapping Operation, Lake Michigan Air Director Consortium-Northwestern University, University Vermont─over Greater Chicago region at three shared spatial resolutions (1.0, 1.3, 4 km2). While domain-level set agreement strongest coarsest resolution, finer find notable inconsistencies, particularly local scales. At 1 km2, simulated domain total NOx sets differ up 82% (∼32–58 k tons/year), while grid cell maximum PM2.5 vary 272% (∼1.5–5.5 tons/km2/year). Intercompared share similar inputs; however, divergent outcomes arise emission factors, processes, traffic data. burdens among racial/ethnic subgroups are generally ranked similarly sets, magnitude relative disparities can 11%–a potentially consequential factor consider downstream impact analyses.

Language: Английский

Citations

0
Assessing the air quality, public health, and equity implications of an Advanced Clean Trucks policy for Illinois DOI
Victoria A. Lang,

Sara F. Camilleri,

Neda Deylami

et al.

Frontiers of Earth Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

Language: Английский

Citations

0
Tracking air pollution and CO2 emissions in 13,189 urban areas worldwide using large geospatial datasets DOI Creative Commons
Soo-Yeon Kim, Gaige Hunter Kerr, Aaron van Donkelaar

et al.

Communications Earth & Environment, Journal Year: 2025, Volume and Issue: 6(1)

Published: May 7, 2025

Language: Английский

Citations

0
Neighborhood-Level Nitrogen Dioxide Inequalities Contribute to Surface Ozone Variability in Houston, Texas DOI Creative Commons
Isabella M. Dressel, Sixuan Zhang, Mary Angelique G. Demetillo

et al.

ACS ES&T Air, Journal Year: 2024, Volume and Issue: 1(9), P. 973 - 988

Published: July 30, 2024

In Houston, Texas, nitrogen dioxide (NO

Language: Английский

Citations

1
Capturing Exposure Disparities with Chemical Transport Models: Evaluating the Suitability of Downscaling Using Land Use Regression DOI
Jad Zalzal, Laura Minet, Jeffrey R. Brook

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(32), P. 14348 - 14360

Published: Aug. 2, 2024

High resolution exposure surfaces are essential to capture disparities in traffic-related air pollution urban areas. In this study, we develop an approach downscale Chemical Transport Model (CTM) simulations a hyperlocal level (∼100m) the Greater Toronto Area (GTA) under three scenarios where emissions from cars, trucks and buses zeroed out, thus capturing burden of each transportation mode. This proposed statistically fuses CTMs with Land-Use Regression using machine learning techniques. With downscaling approach, changes pollutant concentrations different appropriately captured by factors that trained reflect spatial distribution emission reductions. Our validation analysis shows high-resolution models resulted better performance than coarse when compared observations at reference stations. We used assess nitrogen dioxide (NO

Language: Английский

Citations

1
U.S. Ambient Air Monitoring Network Has Inadequate Coverage under New PM2.5 Standard DOI Creative Commons
Yuzhou Wang, Julian Marshall, Joshua S. Apte

et al.

Environmental Science & Technology Letters, Journal Year: 2024, Volume and Issue: 11(11), P. 1220 - 1226

Published: Oct. 15, 2024

The Clean Air Act (CAA) in the United States relies heavily on regulatory monitoring networks, yet sites are sparsely located, especially among historically disadvantaged communities. For ambient fine particulate matter (PM2.5), we compare air quality data with spatially complete concentrations derived from empirical models to quantify gaps existing U.S. networks capturing concentration hotspots and exposure disparities. Recently, Environmental Protection Agency adopted a more stringent annual-average standard for PM2.5 (9 μg/m3). Here, demonstrate that 44% of urban areas exceeding this new standard─encompassing ∼20 million people─would remain undetected because current network. Crucially, find "uncaptured" hotspots, which contain 2.8 people census tracts misclassified as attainment standard, have substantially higher percentages minority populations (i.e., color, communities, low-income populations) compared overall population. To address these gaps, highlight 10 priority locations could reduce population uncaptured by 67%. Overall, our findings urgent need

Language: Английский

Citations

1
Disproportionate Clean Air Act violations occur in communities of color throughout the United States DOI Creative Commons
Gaige Hunter Kerr,

Richard A Stedman,

Susan C. Anenberg

et al.

Environmental Research Letters, Journal Year: 2024, Volume and Issue: 19(5), P. 054052 - 054052

Published: April 22, 2024

Abstract The United States (U.S.) Clean Air Act seeks to prevent and abate ambient air pollution, while also providing a framework identify address violations. Little research has examined where or how frequently violations of the occur marginalized communities may bear disproportionate share these violations, despite fact that experience persistent, pollution levels associated health impacts. Here, we leverage data on enforcement compliance together with demographic show most serious Act—high priority (HPVs)—predominantly in color throughout U.S. Specifically, find number facilities an HPV within largest proportion people is nearly two times greater than smallest proportion. Only 6% their timeframe mandated by Environmental Protection Agency, larger disadvantaged do not this compared non-disadvantaged communities. Enforcing agencies should improve are communicated addressed. To end, suggest several ways empower individuals easy-to-access related practices reporting be standardized across enforcing agencies.

Language: Английский

Citations

0