Enhancing the Reliability of NO2 Monitoring Using Low-Cost Sensors by Compensating for Temperature and Humidity Effects DOI Creative Commons
Daniellys Alejo Sánchez, Olivier Schalm, Arianna Álvarez Cruz

et al.

Atmosphere, Journal Year: 2024, Volume and Issue: 15(11), P. 1365 - 1365

Published: Nov. 13, 2024

The study investigates methods to enhance the reliability of NO2 monitoring using low-cost electrochemical sensors measure gaseous pollutants in air by addressing impacts temperature and relative humidity. within a plastic container was controlled an internal mica heater, external hot blower, or cooling packs, while humidity adjusted glycerine solutions. Findings indicated that auxiliary electrode signal is susceptible moderately affected In contrast, working less humidity; however, adjustments are still required determine gas concentrations accurately. Tests involving on/off cycles showed experiences exponential decay before stabilizing, requiring exclusion initial readings during activities. Additionally, calibration experiments zero allowed determination compensation factor nT across different temperatures levels. These results highlight importance compensating for effects improve accuracy measurements sensors. This refinement makes applicable broader range environmental conditions. However, also show lack repeatability calibration.

Language: Английский

Preterm Births Attributable to Criteria Air Pollutant Exposure in Bangladesh During 2015-2019 DOI
Debatosh B. Partha,

Sumiya Yasmin,

Hrithik Nath

et al.

Environmental Pollution, Journal Year: 2025, Volume and Issue: unknown, P. 125742 - 125742

Published: Jan. 1, 2025

Language: Английский

Citations

2
Urban spatial structure and air quality in the United States: Evidence from a longitudinal approach DOI Creative Commons
Seyed Sajjad Abdollahpour, Meng Qi, Huyen Le

et al.

Environment International, Journal Year: 2024, Volume and Issue: 190, P. 108871 - 108871

Published: July 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

Language: Английский

Citations

3
PM 2.5 exposure disparities persist despite strict vehicle emissions controls in California DOI Creative Commons
Libby Koolik,

Álvaro Alvarado,

Amy Budahn

et al.

Science Advances, Journal Year: 2024, Volume and Issue: 10(37)

Published: Sept. 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.

Language: Английский

Citations

3
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
On-Road Measurements of Nitrogen Oxides, CO, CO2, and VOC Emissions in Two Southwestern U.S. Cities DOI Creative Commons
Kristen Zuraski, Colin Harkins, Jeff Peischl

et al.

ACS ES&T Air, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

Language: Английский

Citations

0
Sector-, Season-, and Country-Specific NO2-Associated Health Benefits from NOx Emission Reductions DOI Creative Commons
Patrick Wiecko, Daven K. Henze, M. Omar Nawaz

et al.

ACS ES&T Air, Journal Year: 2025, Volume and Issue: 2(4), P. 700 - 709

Published: March 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.

Language: Английский

Citations

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

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
Identifying Sources of NOx emissions from Aircraft through Source Apportionment and Regression Models DOI Creative Commons
Daniel L. Goldberg, B. de Foy, M. Omar Nawaz

et al.

Published: May 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

Language: Английский

Citations

1
PM2.5 exposure disparities persist despite strict vehicle emissions controls in California DOI Creative Commons
Libby Koolik,

Álvaro Alvarado,

Amy Budahn

et al.

Published: Aug. 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.

Language: Английский

Citations

1
Enhancing NO2 Detection Ability of Surface Acoustic Wave Sensors with ZnO-Decorated N-doped Porous Carbon Nanosheets DOI
Xue Li, Feng Yuan,

Haifeng Lv

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

The ZnO provides abundant adsorption sites of NO 2 to the N-PCNs, optimizing sensing mechanism N-PCNs for , and significantly reinforcing detection ability layers SAW sensors.

Language: Английский

Citations

0