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

и другие.

Environmental Research Letters, Год журнала: 2024, Номер 19(5), С. 054052 - 054052

Опубликована: Апрель 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.

Язык: Английский

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

Sai Amritha,

Hamza Varikoden, Vikas Patel

и другие.

Sustainable Cities and Society, Год журнала: 2024, Номер 112, С. 105617 - 105617

Опубликована: Июнь 21, 2024

Язык: Английский

Процитировано

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

и другие.

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Июль 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.

Язык: Английский

Процитировано

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

и другие.

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 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.

Язык: Английский

Процитировано

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

и другие.

Frontiers of Earth Science, Год журнала: 2025, Номер unknown

Опубликована: Март 18, 2025

Язык: Английский

Процитировано

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

и другие.

Communications Earth & Environment, Год журнала: 2025, Номер 6(1)

Опубликована: Май 7, 2025

Язык: Английский

Процитировано

0
Insights Into Summertime Surface Ozone Formation From Diurnal Variations in Formaldehyde and Nitrogen Dioxide Along a Transect Through New York City DOI Creative Commons
Madankui Tao, Arlene M. Fiore, Alexandra Karambelas

и другие.

Journal of Geophysical Research Atmospheres, Год журнала: 2025, Номер 130(9)

Опубликована: Май 12, 2025

Abstract Estimating tropospheric ozone (O 3 ) production from observations is challenging but possible given the close coupling of O with formaldehyde (HCHO) and nitrogen dioxide (NO 2 ), two remotely sensed air pollutants. The previous reliance on once‐daily satellite overpasses highlights need to study diurnal changes surface‐column relationships. Using surface observations, Pandora spectrometer retrievals, a high‐resolution (1.33 km) quality model (WRF‐CMAQ), we characterize patterns HCHO NO at seven locations along an upwind‐downwind pathway through New York City during June–August 2018. Diurnal limited measurements suggest biogenic emission influence, while bimodal pattern indicates impact local anthropogenic oxides emissions. Details these vary by site: afternoon spike Haven (CT) traffic emissions, delayed daily peak Westport relative other sites likely reflects sea breeze dynamics. Peak column concentrations generally lag peaks about four hours, occurring 9–10 a.m. for morning (from WRF‐CMAQ) around 4 p.m. midday WRF‐CMAQ). TROPOMI overpass time 1:30 misses concentrations. A box (F0AM) constrained site‐level WRF‐CMAQ fields 1–9 ppb hr −1 higher noontime rates three sets paired high‐ versus mid‐to‐low‐O days. F0AM sensitivity analyses six days predominantly transitional formation regime urban downwind sites, differing some x ‐saturated diagnosed summertime average conditions via weekday‐weekend effect.

Язык: Английский

Процитировано

0
Capturing Exposure Disparities with Chemical Transport Models: Evaluating the Suitability of Downscaling Using Land Use Regression DOI
Jad Zalzal, Laura Minet, Jeffrey R. Brook

и другие.

Environmental Science & Technology, Год журнала: 2024, Номер 58(32), С. 14348 - 14360

Опубликована: Авг. 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

Язык: Английский

Процитировано

2
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

и другие.

ACS ES&T Air, Год журнала: 2024, Номер 1(9), С. 973 - 988

Опубликована: Июль 30, 2024

In Houston, Texas, nitrogen dioxide (NO

Язык: Английский

Процитировано

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

и другие.

Environmental Science & Technology Letters, Год журнала: 2024, Номер 11(11), С. 1220 - 1226

Опубликована: Окт. 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

Язык: Английский

Процитировано

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

и другие.

Environmental Research Letters, Год журнала: 2024, Номер 19(5), С. 054052 - 054052

Опубликована: Апрель 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.

Язык: Английский

Процитировано

0