On the relation between the planetary boundary layer height and in situ surface observations of atmospheric aerosol pollutants during spring in an urban area.
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| Title: | On the relation between the planetary boundary layer height and in situ surface observations of atmospheric aerosol pollutants during spring in an urban area. |
|---|---|
| Authors: | Foskinis, Romanos1,2,3,4 (AUTHOR), Gini, Maria I.1 (AUTHOR), Kokkalis, Panagiotis5 (AUTHOR), Diapouli, Evangelia1 (AUTHOR), Vratolis, Stergios1 (AUTHOR), Granakis, Konstantinos1,6 (AUTHOR), Zografou, Olga1 (AUTHOR), Komppula, Mika7 (AUTHOR), Vakkari, Ville8,9 (AUTHOR), Nenes, Athanasios3,4 (AUTHOR), Papayannis, Alexandros2,4 (AUTHOR), Eleftheriadis, Konstantinos1 (AUTHOR) elefther@ipta.demokritos.gr |
| Source: | Atmospheric Research. Oct2024, Vol. 308, pN.PAG-N.PAG. 1p. |
| Subjects: | Atmospheric boundary layer, Atmospheric aerosols, Air pollutants, Vertical mixing (Earth sciences), Pollutants, Soot |
| Geographic Terms: | Balkan Peninsula, Athens (Greece) |
| Abstract: | In this study we present the role of the Planetary Boundary Layer Height (PBLH) on the air pollutant concentrations measured at an urban background station at the megacity of Athens, Greece, an area characterized by complex topography. For this purpose, we utilized in situ measurements of aerosol number concentrations at different size bins (10–200 nm) N 10-200nm , (200–550 nm) N 200-550nm , equivalent Black Carbon (eBC), and wind speed data, for the period of May – July 2020. According to our analysis, both horizontal transport and vertical mixing and dispersion of air pollutants play a critical role in air quality. More precisely, PBLH is negatively correlated with aerosol concentration. The increase in the height of the Planetary Boundary Layer (PBL) favors a reduction in aerosol concentration, which, to some extent, compensates for the increase in aerosol load due to emission sources and horizontal transport from the city center. The horizontal advection process is related to the PBLH, since a deep PBL drives the advection, while a shallow PBL is characterized by weak horizontal wind velocities. On the other hand, under stagnant air mass conditions, when the PBL shrinks, the concentrations of air pollutants increase. On average, a 25% increase in the PBLH results in a 15% reduction in aerosol concentration, whereas a 15% reduction in the PBLH may result in a 10% increase in aerosol concentrations. Overall, N 10-200nm particle concentrations increases, when air masses arrive from the S-NW sector (city center) due to traffic and vehicle emissions, while transport of continental pollution mixed with local and regional emissions along the Balkans-Aegean Sea axis, is originating from the NE axis under high wind speeds. The latter is more clearly recognized from aged aerosol components such as sulphate. Whereas, the N 200-550nm and eBC showed increased concentration load under stagnant air mass conditions, independently of the wind direction. [Display omitted] • Horizontal transport, vertical mixing and dispersion of air pollutants play a critical role in air quality. • PBLH is negatively correlated with aerosol concentration. • The increase in the height of the PBL favors a reduction in aerosol concentration, • Under stagnant air mass conditions, when the PBL shrinks, the concentrations of air pollutants increase. [ABSTRACT FROM AUTHOR] |
| Copyright of Atmospheric Research is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 178209872 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: On the relation between the planetary boundary layer height and in situ surface observations of atmospheric aerosol pollutants during spring in an urban area. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Foskinis%2C+Romanos%22">Foskinis, Romanos</searchLink><relatesTo>1,2,3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gini%2C+Maria+I%2E%22">Gini, Maria I.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kokkalis%2C+Panagiotis%22">Kokkalis, Panagiotis</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Diapouli%2C+Evangelia%22">Diapouli, Evangelia</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Vratolis%2C+Stergios%22">Vratolis, Stergios</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Granakis%2C+Konstantinos%22">Granakis, Konstantinos</searchLink><relatesTo>1,6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zografou%2C+Olga%22">Zografou, Olga</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Komppula%2C+Mika%22">Komppula, Mika</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Vakkari%2C+Ville%22">Vakkari, Ville</searchLink><relatesTo>8,9</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nenes%2C+Athanasios%22">Nenes, Athanasios</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Papayannis%2C+Alexandros%22">Papayannis, Alexandros</searchLink><relatesTo>2,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Eleftheriadis%2C+Konstantinos%22">Eleftheriadis, Konstantinos</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> elefther@ipta.demokritos.gr</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Atmospheric+Research%22">Atmospheric Research</searchLink>. Oct2024, Vol. 308, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Atmospheric+boundary+layer%22">Atmospheric boundary layer</searchLink><br /><searchLink fieldCode="DE" term="%22Atmospheric+aerosols%22">Atmospheric aerosols</searchLink><br /><searchLink fieldCode="DE" term="%22Air+pollutants%22">Air pollutants</searchLink><br /><searchLink fieldCode="DE" term="%22Vertical+mixing+%28Earth+sciences%29%22">Vertical mixing (Earth sciences)</searchLink><br /><searchLink fieldCode="DE" term="%22Pollutants%22">Pollutants</searchLink><br /><searchLink fieldCode="DE" term="%22Soot%22">Soot</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Balkan+Peninsula%22">Balkan Peninsula</searchLink><br /><searchLink fieldCode="DE" term="%22Athens+%28Greece%29%22">Athens (Greece)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In this study we present the role of the Planetary Boundary Layer Height (PBLH) on the air pollutant concentrations measured at an urban background station at the megacity of Athens, Greece, an area characterized by complex topography. For this purpose, we utilized in situ measurements of aerosol number concentrations at different size bins (10–200 nm) N 10-200nm , (200–550 nm) N 200-550nm , equivalent Black Carbon (eBC), and wind speed data, for the period of May – July 2020. According to our analysis, both horizontal transport and vertical mixing and dispersion of air pollutants play a critical role in air quality. More precisely, PBLH is negatively correlated with aerosol concentration. The increase in the height of the Planetary Boundary Layer (PBL) favors a reduction in aerosol concentration, which, to some extent, compensates for the increase in aerosol load due to emission sources and horizontal transport from the city center. The horizontal advection process is related to the PBLH, since a deep PBL drives the advection, while a shallow PBL is characterized by weak horizontal wind velocities. On the other hand, under stagnant air mass conditions, when the PBL shrinks, the concentrations of air pollutants increase. On average, a 25% increase in the PBLH results in a 15% reduction in aerosol concentration, whereas a 15% reduction in the PBLH may result in a 10% increase in aerosol concentrations. Overall, N 10-200nm particle concentrations increases, when air masses arrive from the S-NW sector (city center) due to traffic and vehicle emissions, while transport of continental pollution mixed with local and regional emissions along the Balkans-Aegean Sea axis, is originating from the NE axis under high wind speeds. The latter is more clearly recognized from aged aerosol components such as sulphate. Whereas, the N 200-550nm and eBC showed increased concentration load under stagnant air mass conditions, independently of the wind direction. [Display omitted] • Horizontal transport, vertical mixing and dispersion of air pollutants play a critical role in air quality. • PBLH is negatively correlated with aerosol concentration. • The increase in the height of the PBL favors a reduction in aerosol concentration, • Under stagnant air mass conditions, when the PBL shrinks, the concentrations of air pollutants increase. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Atmospheric Research is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.atmosres.2024.107543 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Atmospheric boundary layer Type: general – SubjectFull: Atmospheric aerosols Type: general – SubjectFull: Air pollutants Type: general – SubjectFull: Vertical mixing (Earth sciences) Type: general – SubjectFull: Pollutants Type: general – SubjectFull: Soot Type: general – SubjectFull: Balkan Peninsula Type: general – SubjectFull: Athens (Greece) Type: general Titles: – TitleFull: On the relation between the planetary boundary layer height and in situ surface observations of atmospheric aerosol pollutants during spring in an urban area. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Foskinis, Romanos – PersonEntity: Name: NameFull: Gini, Maria I. – PersonEntity: Name: NameFull: Kokkalis, Panagiotis – PersonEntity: Name: NameFull: Diapouli, Evangelia – PersonEntity: Name: NameFull: Vratolis, Stergios – PersonEntity: Name: NameFull: Granakis, Konstantinos – PersonEntity: Name: NameFull: Zografou, Olga – PersonEntity: Name: NameFull: Komppula, Mika – PersonEntity: Name: NameFull: Vakkari, Ville – PersonEntity: Name: NameFull: Nenes, Athanasios – PersonEntity: Name: NameFull: Papayannis, Alexandros – PersonEntity: Name: NameFull: Eleftheriadis, Konstantinos IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 01698095 Numbering: – Type: volume Value: 308 Titles: – TitleFull: Atmospheric Research Type: main |
| ResultId | 1 |
