Black Carbon Emissions from Traffic Contribute Sustainability to Air Pollution in Urban Cities of India

Hussain, Ali Jaan; Sankar, Tapan Kumar; Vithanage, Meththika; Ambade, Balram; Gautam, Sneha

doi:10.1007/s11270-023-06232-9

Cited by 29 publications

(6 citation statements)

References 84 publications

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“…The overall findings suggest that perceptions of an air pollution as a problem and negative perceptions of the built environment are both associated with lower levels of MVPA among children, a finding that aligns with active living research in other parts of the world (Goon et al, 2020;Gu et al, 2023;Loh et al, 2019;Taylor et al, 2018). This finding suggests that while air pollution is generally high in Indian cities and towns (Dandotiya et al, 2020;Hussain et al, 2023;Mahendra et al, 2023), perception of air pollution --irrespective of actual levels of air pollution --can potentially influence the physical activity of children and youth.…”

Section: Discussionsupporting

confidence: 54%

The interplay between air pollution, built environment, and physical activity: perceptions of children and youth in rural and urban India

Patel,

Katapally,

Khadilkar

et al. 2023

Preprint

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The role of physical inactivity as a contributor to non-communicable diseases (NCDs) risk in children and youth is widely recognized. Air pollution and built environment can limit participation in physical activity and exacerbate NCD risk; however, the relationships between perceptions of air pollution, built environment, and health behaviors are not fully understood, particularly among children and youth in low and middle-income countries. Currently, there are no studies capturing how child and youth perceptions of air pollution and built environment influence physical activity in India, thus, this study investigates the association between perceived air pollution and built environmental factors on moderate-to-vigorous physical activity (MVPA) levels of children and youth in both rural and urban India. Online surveys captured MVPA, perception of air pollution and built environment factors, as well as relevant sociodemographic characteristics from parents and children aged 5 to 17 years in partnership with 41 schools across 28 urban and rural locations during the Coronavirus disease lockdowns in 2021. After adjusting for age, gender, and location, a significant association was found between the perception of air pollution and MVPA levels (β = -18.365, p < 0.001). Similarly, the perception of a high crime rate was associated with lower MVPA levels (β = -23.383, p = 0.002). Reporting the presence of zebra crossings and pedestrian signals or attractive natural sightings was associated with higher MVPA levels; however, this association varied across sociodemographic groups. These findings emphasize the importance of addressing air pollution and improving the built environment to facilitate outdoor active living, including active transportation — solutions that are particularly relevant not only for NCD risk mitigation, but also for climate change adaptation.

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Section: Discussionsupporting

confidence: 54%

The interplay between air pollution, built environment, and physical activity: perceptions of children and youth in rural and urban India

Patel,

Katapally,

Khadilkar

et al. 2023

Preprint

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“…Some O 3 is also transported from the PRD, which is strongest in spring. This study used a Eulerian approach with GEOS-Chem to track air movement, while Ge et al [32] used a backward trajectory analysis, similar to others [45][46][47]; both studies achieved consistent results.…”

Section: Discussionmentioning

confidence: 75%

Influence of Wind Flows on Surface O3 Variation over a Coastal Province in Southeast China

Shen,

Liu,

Chen

et al. 2024

Atmosphere

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Surface ozone (O3) is influenced not only by anthropogenic emissions but also by meteorological factors, with wind direction being one of the most overlooked factors. Here, we combine the observational data of both O3 and wind flow to compare the variation in O3 with wind direction between coastal and inland regions of Fujian, a province in the southeast coast of China with a complicated topography. We further conduct a numerical simulation using a global chemical transport model, GEOS-Chem, to interpret the observational results, explore the linkages between these O3 variations and wind flows, and identify the dominant processes for the occurrence of high O3 that varies with wind flows. The results from the observations from 2015–2021 suggest that, over coastal regions, surface O3 concentrations show a strong dependence on wind flow changes. On average, during the daytime, when southeasterly winds prevail, the mean of O3 concentrations reaches 83.5 μg/m3, which is 5.0 μg/m3 higher than its baseline values (the mean O3 concentrations), while the northwesterly wind tends to reduce surface O3 by 6.4 μg/m3. Such positive O3 anomalies with southeasterly wind are higher in the autumn and summer than in the spring and winter. During the nighttime, the onshore northeasterly wind is associated with enhanced O3 levels, likely due to the airmass containing less NO2, alleviating the titration effects. Over inland regions, however, surface O3 variations are less sensitive to wind flow changes. The GEOS-Chem simulations show that the prevailing southeasterly and southwesterly winds lead to the positive anomaly of a chemical reaction of O3 over coastal regions, suggesting enhanced photochemical production rates. Furthermore, southeasterly winds also aid in transporting more O3 from the outer regions into the coastal regions of Fujian, which results in elevated surface O3 when southeasterly wind dominates. When affected by wind flows in both directions, the chemical reaction and transport in the inland regions do not exhibit significant differences in terms of their impact on O3. This could be one of the reasons for the difference in O3 distribution between coastal and inland regions. This study could help to deepen our understanding of O3 pollution and aid in providing an effective warning of high-O3 episodes.

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“…A few limitations of our research should be addressed. it is widely accepted that the dispersion of pollutants varies not only depending on black carbon [ 79 ], VOCs, HAPs, and many other contaminants but also location and specific activities. This was not explored in our study.…”

Section: Discussionmentioning

confidence: 99%

Perception matters: How air pollution influences life satisfaction in China

Zhao,

Yumei Cao,

Cheng

2024

Heliyon

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Black Carbon Emissions from Traffic Contribute Sustainability to Air Pollution in Urban Cities of India

Cited by 29 publications

References 84 publications

The interplay between air pollution, built environment, and physical activity: perceptions of children and youth in rural and urban India

The interplay between air pollution, built environment, and physical activity: perceptions of children and youth in rural and urban India

Influence of Wind Flows on Surface O3 Variation over a Coastal Province in Southeast China

Perception matters: How air pollution influences life satisfaction in China

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