Published: Jan. 1, 2024
Language: Английский
International journal of modern achievement in science, engineering and technology., Journal Year: 2025, Volume and Issue: 2(1), P. 115 - 132
Published: Jan. 18, 2025
Urbanization and traffic congestion significantly worsen air pollution, leading to serious health risks. This study examines a scenario involving 9% reduction in vehicle volume 4% increase speed on the main roads of Area 6 Qom City (District 2). The focus is evaluating impact these changes quality, specifically concerning pollutants carbon monoxide (CO), nitrogen oxides (NOx), particulate matter (PM2.5), utilizing AERMOD software for modeling. Data were collected through various methods, including statistical analysis, field sampling within area, archived records from Road Administration Transport Organization Iran, GPS data City, local meteorological information. results reveal that implementing proposed management can lead significant reductions pollutant levels: CO levels could decrease by approximately 20.19%, NOx 7.29%, PM2.5 9.00%. These findings underscore potential strategic adjustments patterns improve urban quality. insights gained this are valuable policymakers aiming tackle environmental challenges rapidly urbanizing regions, highlighting importance effective promoting healthier environments. Ultimately, enhancing quality targeted interventions public outcomes contribute more sustainable future.
Language: Английский
Citations
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Environment International, Journal Year: 2025, Volume and Issue: unknown, P. 109304 - 109304
Published: Jan. 1, 2025
Improvements in computer processing power are facilitating the development of more detailed environmental models with greater geographical coverage. We developed a national-scale model outdoor air pollution (Hybrid Air Dispersion Exposure System - HADES) for rapid production concentration maps nitrogen dioxide (NO2) and ozone (O3) at very high spatial resolution (10m). The combines dispersion modelling satellite-derived estimates background concentrations, land cover, 3-D representation buildings, statistical calibration framework. an emissions inventory covering England Wales to implement tested its performance using data years 2018-2019 from fixed-site monitoring locations. In 10,000 Monte Carlo cross-validation iterations, hourly-annual average R2 values NO2 were 0.77-0.79 (RMSE: root mean squared error 5.3-5.7 µg/m3), 0.87-0.89 O3 (RMSE = 3.6-3.8 µg/m3) 95% confidence interval. annual was 0.80 4.9 0.86 3.2 aggregating estimates. surfaces freely available non-commercial use. these exposure assessment, all residential locations, neighbourhoods urban areas, unlikely be below 2021 World Health Organisation Quality Guidelines threshold (10 concentrations µg/m3). Rural suburban areas likely exceed peak-season 8-hour daily maximum (60
Language: Английский
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Published: Jan. 1, 2025
Language: Английский
Citations
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Environment International, Journal Year: 2025, Volume and Issue: 200, P. 109542 - 109542
Published: May 20, 2025
Language: Английский
Citations
0
Frontiers in Environmental Science, Journal Year: 2024, Volume and Issue: 12
Published: Dec. 9, 2024
The changes in global air pollutant concentrations influenced by the COVID-19 lockdown have been widely investigated. lack of clarity regarding individual contributions to restricted human activities (i.e., transportation) has limited understanding health impacts lockdown. In this study, an efficient chemical transport model (GEOS-Chem) was employed simulate concentration pollutants (PM 2.5 , NO 2 and O 3 ) associated with emission reductions land transportation corresponding benefits. simulated results suggested that transportation-related PM reduced 20%, 36%, 55%, respectively. reduction presented regional variations, percentages ranked as follows: China (67%) > India (56%) Europe (−81%) US (−86%), indicating various intensities secondary transformations spatial relevance. benefits were also simulated, all-caused mortalities estimated be 63,547 (95% CI: 47,597, 79,497), 52,685 32,310, 73,059), 231,980 210,373, 253,586) for globally, Transportation-related contributed largest proportion (∼67%) benefits, further emphasizing relevance severity pollution. Our study confirms during considerable provides relevant data supporting evidence. We suggest coordinated efforts restrict certain worldwide should focus on controlling protect people from severe exposure.
Language: Английский
Citations
1
Published: Jan. 1, 2024
Language: Английский
Citations
0