Factors controlling sea salt abundances in the urban atmosphere of a coastal South American megacity

Autores
Dos Santos, Marina; Dawidowski, Laura Elena; Smichowski, Patricia Nora; Ulke, Ana Graciela; Gomez, Dario Ruben
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The South Atlantic oceanic influence in the ambient air of Buenos Aires was studied on the basis of the measured concentrations of Cl-, Mg2+ and Na+, as chemical markers of marine aerosols. A total of 113 fine (PM2.5) and 113 coarse (PM2.5-10) samples were collected over a one-year period in an inland sampling site located ∼250 km from the open sea and ∼7.5 km from the shore of the La Plata River, which flows into the Atlantic Ocean. The ratio rion-PM between the added concentrations of the three ions and the corresponding aerosol mass concentration was also used as a sea salt indicator. The behavior of these indicators under various meteorological conditions was used to identify and characterize the presence of sea salt in the urban aerosol. The influence of regional meteorological conditions was assessed by means of the Potential Source Contribution Function (PSCF) while that of local conditions was assessed by categorized percentile distributions analysis. The pattern of the PSCF for different ranges of the four sea salt indicators, exhibiting a transition from lowest values under continental influence to highest values under oceanic influence, provided robust evidence that the marine aerosol from the South Atlantic Ocean reaches the city of Buenos Aires. The rion-PM ratio, which combines the opposite effects of wind speed on the aerosol mass and ion concentrations, was identified as the most sensitive indicator of sea salt aerosol variations. Percentile distributions of the rion-PM ratio, disaggregated according to onshore (NE, E, SE, S) and offshore (N, NW, W, SW) winds and speeds above and below the median (4.3 m s-1), clearly indicated that the highest levels of marine aerosol occurred under onshore winds and wind speeds > 4.3 m s-1. In addition to characterizing the oceanic influence in Buenos Aires, we reported the expected sea salt levels under different conditions and estimated the magnitude of chloride depletion. This is the first study on sea salt levels in the urban atmosphere of this coastal megacity that reports and makes available a set of consistent concentrations of marine aerosol markers measured over a one-year period.
Fil: Dos Santos, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina. Comisión Nacional de Energía Atómica; Argentina
Fil: Dawidowski, Laura Elena. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química; Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina. Comisión Nacional de Energía Atómica; Argentina
Fil: Smichowski, Patricia Nora. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Ulke, Ana Graciela. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias de la Atmósfera y los Océanos; Argentina
Fil: Gomez, Dario Ruben. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina. Comisión Nacional de Energía Atómica; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química; Argentina
Materia
Sal Marina
Análisis de retrotrayectorias
Depleción de Cloro
Marcadores químicos de sal marina
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/257763
Acceder
id CONICETDig_4b0cdd0f0c30875f776db0411ec4bebe
oai_identifier_str oai:ri.conicet.gov.ar:11336/257763
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Factors controlling sea salt abundances in the urban atmosphere of a coastal South American megacityDos Santos, MarinaDawidowski, Laura ElenaSmichowski, Patricia NoraUlke, Ana GracielaGomez, Dario RubenSal MarinaAnálisis de retrotrayectoriasDepleción de CloroMarcadores químicos de sal marinahttps://purl.org/becyt/ford/2.7https://purl.org/becyt/ford/2The South Atlantic oceanic influence in the ambient air of Buenos Aires was studied on the basis of the measured concentrations of Cl-, Mg2+ and Na+, as chemical markers of marine aerosols. A total of 113 fine (PM2.5) and 113 coarse (PM2.5-10) samples were collected over a one-year period in an inland sampling site located ∼250 km from the open sea and ∼7.5 km from the shore of the La Plata River, which flows into the Atlantic Ocean. The ratio rion-PM between the added concentrations of the three ions and the corresponding aerosol mass concentration was also used as a sea salt indicator. The behavior of these indicators under various meteorological conditions was used to identify and characterize the presence of sea salt in the urban aerosol. The influence of regional meteorological conditions was assessed by means of the Potential Source Contribution Function (PSCF) while that of local conditions was assessed by categorized percentile distributions analysis. The pattern of the PSCF for different ranges of the four sea salt indicators, exhibiting a transition from lowest values under continental influence to highest values under oceanic influence, provided robust evidence that the marine aerosol from the South Atlantic Ocean reaches the city of Buenos Aires. The rion-PM ratio, which combines the opposite effects of wind speed on the aerosol mass and ion concentrations, was identified as the most sensitive indicator of sea salt aerosol variations. Percentile distributions of the rion-PM ratio, disaggregated according to onshore (NE, E, SE, S) and offshore (N, NW, W, SW) winds and speeds above and below the median (4.3 m s-1), clearly indicated that the highest levels of marine aerosol occurred under onshore winds and wind speeds > 4.3 m s-1. In addition to characterizing the oceanic influence in Buenos Aires, we reported the expected sea salt levels under different conditions and estimated the magnitude of chloride depletion. This is the first study on sea salt levels in the urban atmosphere of this coastal megacity that reports and makes available a set of consistent concentrations of marine aerosol markers measured over a one-year period.Fil: Dos Santos, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina. Comisión Nacional de Energía Atómica; ArgentinaFil: Dawidowski, Laura Elena. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química; Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina. Comisión Nacional de Energía Atómica; ArgentinaFil: Smichowski, Patricia Nora. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Ulke, Ana Graciela. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias de la Atmósfera y los Océanos; ArgentinaFil: Gomez, Dario Ruben. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina. Comisión Nacional de Energía Atómica; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química; ArgentinaPergamon-Elsevier Science Ltd2012-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/257763Dos Santos, Marina; Dawidowski, Laura Elena; Smichowski, Patricia Nora; Ulke, Ana Graciela; Gomez, Dario Ruben; Factors controlling sea salt abundances in the urban atmosphere of a coastal South American megacity; Pergamon-Elsevier Science Ltd; Atmospheric Environment; 59; 11-2012; 483-4911352-2310CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1352231012004682info:eu-repo/semantics/altIdentifier/doi/10.1016/j.atmosenv.2012.05.019info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:24:49Zoai:ri.conicet.gov.ar:11336/257763instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:24:49.273CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Factors controlling sea salt abundances in the urban atmosphere of a coastal South American megacity
title Factors controlling sea salt abundances in the urban atmosphere of a coastal South American megacity
spellingShingle Factors controlling sea salt abundances in the urban atmosphere of a coastal South American megacity
Dos Santos, Marina
Sal Marina
Análisis de retrotrayectorias
Depleción de Cloro
Marcadores químicos de sal marina
title_short Factors controlling sea salt abundances in the urban atmosphere of a coastal South American megacity
title_full Factors controlling sea salt abundances in the urban atmosphere of a coastal South American megacity
title_fullStr Factors controlling sea salt abundances in the urban atmosphere of a coastal South American megacity
title_full_unstemmed Factors controlling sea salt abundances in the urban atmosphere of a coastal South American megacity
title_sort Factors controlling sea salt abundances in the urban atmosphere of a coastal South American megacity
dc.creator.none.fl_str_mv Dos Santos, Marina
Dawidowski, Laura Elena
Smichowski, Patricia Nora
Ulke, Ana Graciela
Gomez, Dario Ruben
author Dos Santos, Marina
author_facet Dos Santos, Marina
Dawidowski, Laura Elena
Smichowski, Patricia Nora
Ulke, Ana Graciela
Gomez, Dario Ruben
author_role author
author2 Dawidowski, Laura Elena
Smichowski, Patricia Nora
Ulke, Ana Graciela
Gomez, Dario Ruben
author2_role author
author
author
author
dc.subject.none.fl_str_mv Sal Marina
Análisis de retrotrayectorias
Depleción de Cloro
Marcadores químicos de sal marina
topic Sal Marina
Análisis de retrotrayectorias
Depleción de Cloro
Marcadores químicos de sal marina
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.7
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The South Atlantic oceanic influence in the ambient air of Buenos Aires was studied on the basis of the measured concentrations of Cl-, Mg2+ and Na+, as chemical markers of marine aerosols. A total of 113 fine (PM2.5) and 113 coarse (PM2.5-10) samples were collected over a one-year period in an inland sampling site located ∼250 km from the open sea and ∼7.5 km from the shore of the La Plata River, which flows into the Atlantic Ocean. The ratio rion-PM between the added concentrations of the three ions and the corresponding aerosol mass concentration was also used as a sea salt indicator. The behavior of these indicators under various meteorological conditions was used to identify and characterize the presence of sea salt in the urban aerosol. The influence of regional meteorological conditions was assessed by means of the Potential Source Contribution Function (PSCF) while that of local conditions was assessed by categorized percentile distributions analysis. The pattern of the PSCF for different ranges of the four sea salt indicators, exhibiting a transition from lowest values under continental influence to highest values under oceanic influence, provided robust evidence that the marine aerosol from the South Atlantic Ocean reaches the city of Buenos Aires. The rion-PM ratio, which combines the opposite effects of wind speed on the aerosol mass and ion concentrations, was identified as the most sensitive indicator of sea salt aerosol variations. Percentile distributions of the rion-PM ratio, disaggregated according to onshore (NE, E, SE, S) and offshore (N, NW, W, SW) winds and speeds above and below the median (4.3 m s-1), clearly indicated that the highest levels of marine aerosol occurred under onshore winds and wind speeds > 4.3 m s-1. In addition to characterizing the oceanic influence in Buenos Aires, we reported the expected sea salt levels under different conditions and estimated the magnitude of chloride depletion. This is the first study on sea salt levels in the urban atmosphere of this coastal megacity that reports and makes available a set of consistent concentrations of marine aerosol markers measured over a one-year period.
Fil: Dos Santos, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina. Comisión Nacional de Energía Atómica; Argentina
Fil: Dawidowski, Laura Elena. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química; Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina. Comisión Nacional de Energía Atómica; Argentina
Fil: Smichowski, Patricia Nora. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Ulke, Ana Graciela. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias de la Atmósfera y los Océanos; Argentina
Fil: Gomez, Dario Ruben. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina. Comisión Nacional de Energía Atómica; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química; Argentina
description The South Atlantic oceanic influence in the ambient air of Buenos Aires was studied on the basis of the measured concentrations of Cl-, Mg2+ and Na+, as chemical markers of marine aerosols. A total of 113 fine (PM2.5) and 113 coarse (PM2.5-10) samples were collected over a one-year period in an inland sampling site located ∼250 km from the open sea and ∼7.5 km from the shore of the La Plata River, which flows into the Atlantic Ocean. The ratio rion-PM between the added concentrations of the three ions and the corresponding aerosol mass concentration was also used as a sea salt indicator. The behavior of these indicators under various meteorological conditions was used to identify and characterize the presence of sea salt in the urban aerosol. The influence of regional meteorological conditions was assessed by means of the Potential Source Contribution Function (PSCF) while that of local conditions was assessed by categorized percentile distributions analysis. The pattern of the PSCF for different ranges of the four sea salt indicators, exhibiting a transition from lowest values under continental influence to highest values under oceanic influence, provided robust evidence that the marine aerosol from the South Atlantic Ocean reaches the city of Buenos Aires. The rion-PM ratio, which combines the opposite effects of wind speed on the aerosol mass and ion concentrations, was identified as the most sensitive indicator of sea salt aerosol variations. Percentile distributions of the rion-PM ratio, disaggregated according to onshore (NE, E, SE, S) and offshore (N, NW, W, SW) winds and speeds above and below the median (4.3 m s-1), clearly indicated that the highest levels of marine aerosol occurred under onshore winds and wind speeds > 4.3 m s-1. In addition to characterizing the oceanic influence in Buenos Aires, we reported the expected sea salt levels under different conditions and estimated the magnitude of chloride depletion. This is the first study on sea salt levels in the urban atmosphere of this coastal megacity that reports and makes available a set of consistent concentrations of marine aerosol markers measured over a one-year period.
publishDate 2012
dc.date.none.fl_str_mv 2012-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/257763
Dos Santos, Marina; Dawidowski, Laura Elena; Smichowski, Patricia Nora; Ulke, Ana Graciela; Gomez, Dario Ruben; Factors controlling sea salt abundances in the urban atmosphere of a coastal South American megacity; Pergamon-Elsevier Science Ltd; Atmospheric Environment; 59; 11-2012; 483-491
1352-2310
CONICET Digital
CONICET
url http://hdl.handle.net/11336/257763
identifier_str_mv Dos Santos, Marina; Dawidowski, Laura Elena; Smichowski, Patricia Nora; Ulke, Ana Graciela; Gomez, Dario Ruben; Factors controlling sea salt abundances in the urban atmosphere of a coastal South American megacity; Pergamon-Elsevier Science Ltd; Atmospheric Environment; 59; 11-2012; 483-491
1352-2310
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1352231012004682
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.atmosenv.2012.05.019
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.069144

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