Preterm Births Attributable to Criteria Air Pollutant Exposure in Bangladesh During 2015-2019

Environmental Pollution, Год журнала: 2025, Номер unknown, С. 125742 - 125742

Опубликована: Янв. 1, 2025

Язык: Английский

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Satellite data to support air quality assessment and management

Journal of the Air & Waste Management Association, Год журнала: 2025, Номер 75(6), С. 429 - 463

Опубликована: Май 28, 2025

Satellite data have long been recognized as valuable for air quality applications. These applications are in a stage of rapid growth: new geostationary satellites provide hourly or sub-hourly data; improvements algorithms convert measured wavelengths into retrievals atmospheric constituents; advances machine learning support improved estimates near-surface pollution; and growing interest among managers has led to range satellite Considering mainly activities the United States under Clean Air Act, we discuss proven relevant management, including: informing epidemiological studies health risk assessments setting regulatory standards; evaluating models; constraining emissions inventories; supporting Exceptional Event Demonstrations through tracking wildfire plumes other sources; characterizing emission patterns ozone-forming chemistry State Implementation Plans; improving forecasting; long-term trends evaluate impact. professionals increasingly using these related analyses, but barriers remain. This review provides summary products used assessments; progress observations deriving surface-level information across scales; their use management.Implications: The covers advancements over last 15 years. Success with applications, especially PM2.5 NO2, include assessment, inventories, short- relevance. Solutions co-developed between researchers practitioners show promise continued value

Язык: Английский

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PM _2.5 exposure disparities persist despite strict vehicle emissions controls in California

Science Advances, Год журнала: 2024, Номер 10(37)

Опубликована: Сен. 11, 2024

As policymakers increasingly focus on environmental justice, a key question is whether emissions reductions aimed at addressing air quality or climate change can also ameliorate persistent pollution exposure disparities. We examine evidence from California’s aggressive vehicle control policy 2000 to 2019. find 65% reduction in modeled statewide average PM 2.5 on-road vehicles, yet for people of color and overburdened community residents, relative disparities increased. Light-duty are the main driver disparity, although smaller contributions heavy-duty vehicles especially affect some groups. Our findings suggest that continued trend will likely reduce concentrations absolute disparity but may not without greater attention systemic factors leading this disparity.

Язык: Английский

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Urban spatial structure and air quality in the United States: Evidence from a longitudinal approach

Environment International, Год журнала: 2024, Номер 190, С. 108871 - 108871

Опубликована: Июль 3, 2024

Previous studies on the relationship between urban form and air quality: (1) report mixed results among specific aspects of spatial structure (e.g., expansion, form, or shape) (2) use primarily cross-sectional approaches with a single year data. This study takes advantage multi-decade, longitudinal approach to investigate impact population-weighted concentrations PM

Язык: Английский

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Assessing the air quality, public health, and equity implications of an Advanced Clean Trucks policy for Illinois

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

Опубликована: Март 18, 2025

Язык: Английский

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On-Road Measurements of Nitrogen Oxides, CO, CO₂, and VOC Emissions in Two Southwestern U.S. Cities

ACS ES&T Air, Год журнала: 2025, Номер unknown

Опубликована: Март 18, 2025

Язык: Английский

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Sector-, Season-, and Country-Specific NO₂-Associated Health Benefits from NO_x Emission Reductions

ACS ES&T Air, Год журнала: 2025, Номер 2(4), С. 700 - 709

Опубликована: Март 19, 2025

Long-term exposure to NO2 is associated with elevated risks for pediatric asthma and premature death. Despite national policies targeting NO2's main source, NOx emissions, its global health burden remains high. Here, we use the air quality model GEOS-Chem adjoint TROPOspheric Monitoring Instrument (TROPOMI)-based satellite downscaling estimate that long-term responsible 2.07 (95% CI 0.91–2.70) million cases 1.98 0.52–2.86) deaths globally in 2019. We attribute these anthropogenic emissions by sector, country, season using provide a recommendation most impactful sector emission controls each G20 country. Discrepancies exist between benefits incurred reductions distributions, particularly countries emitters adjoining population centers. For example, find that, if Russian were reduced uniformly 10% across all sectors, energy 31% of annual would account 47% 49% death benefits. The which occur also affects magnitude benefit, as seen fact wintertime alone are approximately one-third outcome. present unique results members showcase how country's can be reducing NO2-associated burden.

Язык: Английский

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Capturing Exposure Disparities with Chemical Transport Models: Evaluating the Suitability of Downscaling Using Land Use Regression

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

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Identifying Sources of NOx emissions from Aircraft through Source Apportionment and Regression Models

Опубликована: Май 17, 2024

Air quality managers in areas exceeding air pollution standards are motivated to understand where there further opportunities reduce NOx emissions improve ozone and PM2.5 quality. In this project, we use a combination of aircraft remote sensing (i.e., GCAS), source apportionment models CAMx), regression investigate from individual source-sectors Houston, TX. prior work, GCAS column NO2 was shown be close the “truth” validating model simulations. Column CAMx substantially low biased compared Pandora (–20%) measurements (–31%), suggesting an underestimate local emissions. We applied flux divergence method data distinguish linear shape major highways identify underestimates at highway locations. Using multiple model, isolated on-road, railyard, “other” as likeliest cause bias, simultaneously identified potential overestimate shipping modified on-road NOX new simulation increased background NO2, better agreement found with measurements: bias improved –31% –10% r2 0.78 0.80. This study outlines how data, including fine spatial information newer instruments such TEMPO, can used concert chemical transport provide actionable for

Язык: Английский

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PM2.5 exposure disparities persist despite strict vehicle emissions controls in California

Опубликована: Авг. 26, 2024

As policymakers increasingly focus on environmental justice, a key question is whether emissions reductions aimed at addressing air quality or climate change can also ameliorate persistent pollution exposure disparities. We examine evidence from California’s aggressive vehicle control policy 2000-2019. find 65% reduction in modeled statewide average to PM2.5 on-road vehicles, yet for people of color and overburdened community residents, relative disparities increased. Light-duty are the main driver disparity, although smaller contributions heavy-duty vehicles especially impact some groups. Our findings suggest that continued trend will likely reduce concentrations absolute disparity but may not without greater attention systemic factors leading this disparity.

Язык: Английский

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