The cause-effect relationship between synoptic and local wind patterns and PM10 concentrations in the complex-orography urban area of Naples (Italy)
This study examines the relationship between the temporal variability of PM10 concentrations and synoptic and local wind patterns in Naples over a four-year period (2018, 2020–2022). PM10 data were collected from three monitoring stations (IT1493, IT1491, and IT1497), representing different atmosphe...
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Elsevier
2025-08-01
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| Series: | City and Environment Interactions |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590252025000145 |
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| author | M.A Hernández-Ceballos M. Rubino C. Sirignano E. Chianese A Riccio |
| author_facet | M.A Hernández-Ceballos M. Rubino C. Sirignano E. Chianese A Riccio |
| author_sort | M.A Hernández-Ceballos |
| collection | DOAJ |
| description | This study examines the relationship between the temporal variability of PM10 concentrations and synoptic and local wind patterns in Naples over a four-year period (2018, 2020–2022). PM10 data were collected from three monitoring stations (IT1493, IT1491, and IT1497), representing different atmospheric pollution conditions: suburban traffic, urban traffic, and background, respectively. The mean PM10 concentrations recorded at these stations were 33.3 ± 0.5 µg/m3, 32.1 ± 0.4 µg/m3, and 27.4 ± 0.3 µg/m3, all remaining below the EU annual limit of 40 µg/m3. However, extreme daily peaks during the sampling period reached 203.1 µg/m3 at the suburban site, 128.6 µg/m3 at the urban site, and 129 µg/m3 at the background site, indicating severe pollution episodes. The intradiurnal cycle showed a bimodal pattern in PM10 concentrations at the urban and suburban sites, with peaks occurring in the morning and evening, coinciding with traffic activity. In contrast, the background site showed a flatter profile, suggesting a weaker influence of local sources. The occurrence of high concentrations is mainly registered in winter. A backward trajectory analysis using the HYSPLIT model identified eight dominant synoptic airflow patterns, with nearby, westerly, and northerly flows being the most frequent. Notably, nearby airflows—often associated with sea-land breeze circulations, as it is observed by analyzing surface winds—were responsible for 75 % of the exceedances of the EU daily limit of 50 µg/m3, highlighting their role in pollutant accumulation and restricted dispersion. These findings underscore the critical influence of local wind circulation and large-scale transport mechanisms on air quality in Naples. They emphasize the need for integrated air quality management strategies that address both local emissions and regional transport processes to develop effective mitigation policies for Mediterranean coastal cities. |
| format | Article |
| id | doaj-art-824c6cf2384a485ba067c103ce1b2f4f |
| institution | OA Journals |
| issn | 2590-2520 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
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| series | City and Environment Interactions |
| spelling | doaj-art-824c6cf2384a485ba067c103ce1b2f4f2025-08-20T01:55:38ZengElsevierCity and Environment Interactions2590-25202025-08-012710020010.1016/j.cacint.2025.100200The cause-effect relationship between synoptic and local wind patterns and PM10 concentrations in the complex-orography urban area of Naples (Italy)M.A Hernández-Ceballos0M. Rubino1C. Sirignano2E. Chianese3A Riccio4Department of Physics, University of Cordoba, Spain; Corresponding author.University of Campania Luigi Vanvitelli, Department of Mathematics and Physics, viale Lincoln, 5 81100 CASERTA, ItalyInstitute of Atmospheric Science and Climate (ISAC), National Research Council (CNR), 0133 Rome, Italy; National Biodiversity Future Center (NBFC), 90133 Palermo, ItalyDepartment of Science and Technology, Parthenope University of Naples, Centro Direzionale, Isola C4, 80143 Naples, ItalyDepartment of Science and Technology, Parthenope University of Naples, Centro Direzionale, Isola C4, 80143 Naples, ItalyThis study examines the relationship between the temporal variability of PM10 concentrations and synoptic and local wind patterns in Naples over a four-year period (2018, 2020–2022). PM10 data were collected from three monitoring stations (IT1493, IT1491, and IT1497), representing different atmospheric pollution conditions: suburban traffic, urban traffic, and background, respectively. The mean PM10 concentrations recorded at these stations were 33.3 ± 0.5 µg/m3, 32.1 ± 0.4 µg/m3, and 27.4 ± 0.3 µg/m3, all remaining below the EU annual limit of 40 µg/m3. However, extreme daily peaks during the sampling period reached 203.1 µg/m3 at the suburban site, 128.6 µg/m3 at the urban site, and 129 µg/m3 at the background site, indicating severe pollution episodes. The intradiurnal cycle showed a bimodal pattern in PM10 concentrations at the urban and suburban sites, with peaks occurring in the morning and evening, coinciding with traffic activity. In contrast, the background site showed a flatter profile, suggesting a weaker influence of local sources. The occurrence of high concentrations is mainly registered in winter. A backward trajectory analysis using the HYSPLIT model identified eight dominant synoptic airflow patterns, with nearby, westerly, and northerly flows being the most frequent. Notably, nearby airflows—often associated with sea-land breeze circulations, as it is observed by analyzing surface winds—were responsible for 75 % of the exceedances of the EU daily limit of 50 µg/m3, highlighting their role in pollutant accumulation and restricted dispersion. These findings underscore the critical influence of local wind circulation and large-scale transport mechanisms on air quality in Naples. They emphasize the need for integrated air quality management strategies that address both local emissions and regional transport processes to develop effective mitigation policies for Mediterranean coastal cities.http://www.sciencedirect.com/science/article/pii/S2590252025000145PM10Air qualityNaplesIntradiurnal cyclesAir mass trajectoriesRegional transport |
| spellingShingle | M.A Hernández-Ceballos M. Rubino C. Sirignano E. Chianese A Riccio The cause-effect relationship between synoptic and local wind patterns and PM10 concentrations in the complex-orography urban area of Naples (Italy) City and Environment Interactions PM10 Air quality Naples Intradiurnal cycles Air mass trajectories Regional transport |
| title | The cause-effect relationship between synoptic and local wind patterns and PM10 concentrations in the complex-orography urban area of Naples (Italy) |
| title_full | The cause-effect relationship between synoptic and local wind patterns and PM10 concentrations in the complex-orography urban area of Naples (Italy) |
| title_fullStr | The cause-effect relationship between synoptic and local wind patterns and PM10 concentrations in the complex-orography urban area of Naples (Italy) |
| title_full_unstemmed | The cause-effect relationship between synoptic and local wind patterns and PM10 concentrations in the complex-orography urban area of Naples (Italy) |
| title_short | The cause-effect relationship between synoptic and local wind patterns and PM10 concentrations in the complex-orography urban area of Naples (Italy) |
| title_sort | cause effect relationship between synoptic and local wind patterns and pm10 concentrations in the complex orography urban area of naples italy |
| topic | PM10 Air quality Naples Intradiurnal cycles Air mass trajectories Regional transport |
| url | http://www.sciencedirect.com/science/article/pii/S2590252025000145 |
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