Tropical tropospheric aerosol sources and chemical composition observed at high altitude in the Bolivian Andes
The chemical composition of PM10 and non-overlapping PM2.5 was studied at the summit of Mt. Chacaltaya (5380 m a.s.l., lat. −16.346950°, long. −68.128250°) providing a unique long-term record spanning from December 2011 to March 2020. The chemical composition of aerosol at the Chacaltaya Global Atmo...
| Autores: | , , , , , , , , , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/350654 |
| Acceso en línea: | http://hdl.handle.net/10261/350654 https://api.elsevier.com/content/abstract/scopus_id/85186877203 |
| Access Level: | acceso abierto |
| Palabra clave: | PM10 PM2.5 Aerosols http://metadata.un.org/sdg/11 http://metadata.un.org/sdg/3 http://metadata.un.org/sdg/9 Ensure healthy lives and promote well-being for all at all ages Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation Make cities and human settlements inclusive, safe, resilient and sustainable |
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Tropical tropospheric aerosol sources and chemical composition observed at high altitude in the Bolivian Andes |
| title |
Tropical tropospheric aerosol sources and chemical composition observed at high altitude in the Bolivian Andes |
| spellingShingle |
Tropical tropospheric aerosol sources and chemical composition observed at high altitude in the Bolivian Andes Isabel Moreno, C. PM10 PM2.5 Aerosols http://metadata.un.org/sdg/11 http://metadata.un.org/sdg/3 http://metadata.un.org/sdg/9 Ensure healthy lives and promote well-being for all at all ages Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation Make cities and human settlements inclusive, safe, resilient and sustainable |
| title_short |
Tropical tropospheric aerosol sources and chemical composition observed at high altitude in the Bolivian Andes |
| title_full |
Tropical tropospheric aerosol sources and chemical composition observed at high altitude in the Bolivian Andes |
| title_fullStr |
Tropical tropospheric aerosol sources and chemical composition observed at high altitude in the Bolivian Andes |
| title_full_unstemmed |
Tropical tropospheric aerosol sources and chemical composition observed at high altitude in the Bolivian Andes |
| title_sort |
Tropical tropospheric aerosol sources and chemical composition observed at high altitude in the Bolivian Andes |
| dc.creator.none.fl_str_mv |
Isabel Moreno, C. Krejci, Radovan Jaffrezo, Jean Luc Uzu, Gaëlle Alastuey, Andrés Andrade, Marcos F. Mardóñez, Valeria Koenig, Alkuin Maximilian Aliaga, Diego Mohr, Claudia Ticona, Laura Velarde, Fernando Blacutt, Luis Forno, Ricardo Whiteman, David N. Wiedensohler, Alfred Ginot, Patrick Laj, Paolo |
| author |
Isabel Moreno, C. |
| author_facet |
Isabel Moreno, C. Krejci, Radovan Jaffrezo, Jean Luc Uzu, Gaëlle Alastuey, Andrés Andrade, Marcos F. Mardóñez, Valeria Koenig, Alkuin Maximilian Aliaga, Diego Mohr, Claudia Ticona, Laura Velarde, Fernando Blacutt, Luis Forno, Ricardo Whiteman, David N. Wiedensohler, Alfred Ginot, Patrick Laj, Paolo |
| author_role |
author |
| author2 |
Krejci, Radovan Jaffrezo, Jean Luc Uzu, Gaëlle Alastuey, Andrés Andrade, Marcos F. Mardóñez, Valeria Koenig, Alkuin Maximilian Aliaga, Diego Mohr, Claudia Ticona, Laura Velarde, Fernando Blacutt, Luis Forno, Ricardo Whiteman, David N. Wiedensohler, Alfred Ginot, Patrick Laj, Paolo |
| author2_role |
author author author author author author author author author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
PM10 PM2.5 Aerosols http://metadata.un.org/sdg/11 http://metadata.un.org/sdg/3 http://metadata.un.org/sdg/9 Ensure healthy lives and promote well-being for all at all ages Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation Make cities and human settlements inclusive, safe, resilient and sustainable |
| topic |
PM10 PM2.5 Aerosols http://metadata.un.org/sdg/11 http://metadata.un.org/sdg/3 http://metadata.un.org/sdg/9 Ensure healthy lives and promote well-being for all at all ages Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation Make cities and human settlements inclusive, safe, resilient and sustainable |
| description |
The chemical composition of PM10 and non-overlapping PM2.5 was studied at the summit of Mt. Chacaltaya (5380 m a.s.l., lat. −16.346950°, long. −68.128250°) providing a unique long-term record spanning from December 2011 to March 2020. The chemical composition of aerosol at the Chacaltaya Global Atmosphere Watch (GAW) site is representative of the regional background, seasonally affected by biomass burning practices and by nearby anthropogenic emissions from the metropolitan area of La Paz–El Alto. Concentration levels are clearly influenced by seasons with minima occurring during the wet season (December to March) and maxima occurring during the dry and transition seasons (April to November). Ions, total carbon (EC + OC), and saccharide interquartile ranges for concentrations are 558–1785, 384–1120, and 4.3–25.5 ng m−3 for bulk PM10 and 917–2308, 519–1175, and 3.9–24.1 ng m−3 for PM2.5, respectively, with most of the aerosol seemingly present in the PM2.5 fraction. Such concentrations are overall lower compared to other high-altitude stations around the globe but higher than Amazonian remote sites (except for OC). For PM10, there is dominance of insoluble mineral matter (33 %–56 % of the mass), organic matter (7 %–34 %), and secondary inorganic aerosol (15 %–26 %). Chemical composition profiles were identified for different origins: EC, NO−3 , NH+4 , glucose, and C2O24− for the nearby urban and rural areas; OC, EC, NO−3 , K+, acetate, formate, levoglucosan, and some F− and Br− for biomass burning; MeSO−3 , Na+, Mg2+, K+, and Ca2+ for aged marine emissions from the Pacific Ocean; arabitol, mannitol, and glucose for biogenic emissions; Na+, Ca2+, Mg2+, and K+ for soil dust; and SO24−, F−, and some Cl− for volcanism. Regional biomass burning practices influence the soluble fraction of the aerosol between June and November. The organic fraction is present all year round and has both anthropogenic (biomass burning and other combustion sources) and natural (primary and secondary biogenic emissions) origins, with the OC/EC mass ratio being practically constant all year round (10.5 ± 5.7, IQR 8.1–13.3). Peruvian volcanism has dominated the SO24− concentration since 2014, though it presents strong temporal variability due to the intermittence of the sources and seasonal changes in the transport patterns. These measurements represent some of the first long-term observations of aerosol chemical composition at a continental high-altitude site in the tropical Southern Hemisphere. |
| publishDate |
2024 |
| dc.date.none.fl_str_mv |
2024 2024 2024 |
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info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 Publisher's version info:eu-repo/semantics/publishedVersion |
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article |
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publishedVersion |
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http://hdl.handle.net/10261/350654 https://api.elsevier.com/content/abstract/scopus_id/85186877203 |
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http://hdl.handle.net/10261/350654 https://api.elsevier.com/content/abstract/scopus_id/85186877203 |
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Inglés |
| language_invalid_str_mv |
Inglés |
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Atmospheric Chemistry and Physics https://doi.org/10.5194/acp-24-2837-2024 Sí |
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info:eu-repo/semantics/openAccess |
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openAccess |
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European Geosciences Union |
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European Geosciences Union |
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reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC instname:Consejo Superior de Investigaciones Científicas (CSIC) |
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Consejo Superior de Investigaciones Científicas (CSIC) |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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1869405321152167936 |
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Tropical tropospheric aerosol sources and chemical composition observed at high altitude in the Bolivian AndesIsabel Moreno, C.Krejci, RadovanJaffrezo, Jean LucUzu, GaëlleAlastuey, AndrésAndrade, Marcos F.Mardóñez, ValeriaKoenig, Alkuin MaximilianAliaga, DiegoMohr, ClaudiaTicona, LauraVelarde, FernandoBlacutt, LuisForno, RicardoWhiteman, David N.Wiedensohler, AlfredGinot, PatrickLaj, PaoloPM10PM2.5Aerosolshttp://metadata.un.org/sdg/11http://metadata.un.org/sdg/3http://metadata.un.org/sdg/9Ensure healthy lives and promote well-being for all at all agesBuild resilient infrastructure, promote inclusive and sustainable industrialization and foster innovationMake cities and human settlements inclusive, safe, resilient and sustainableThe chemical composition of PM10 and non-overlapping PM2.5 was studied at the summit of Mt. Chacaltaya (5380 m a.s.l., lat. −16.346950°, long. −68.128250°) providing a unique long-term record spanning from December 2011 to March 2020. The chemical composition of aerosol at the Chacaltaya Global Atmosphere Watch (GAW) site is representative of the regional background, seasonally affected by biomass burning practices and by nearby anthropogenic emissions from the metropolitan area of La Paz–El Alto. Concentration levels are clearly influenced by seasons with minima occurring during the wet season (December to March) and maxima occurring during the dry and transition seasons (April to November). Ions, total carbon (EC + OC), and saccharide interquartile ranges for concentrations are 558–1785, 384–1120, and 4.3–25.5 ng m−3 for bulk PM10 and 917–2308, 519–1175, and 3.9–24.1 ng m−3 for PM2.5, respectively, with most of the aerosol seemingly present in the PM2.5 fraction. Such concentrations are overall lower compared to other high-altitude stations around the globe but higher than Amazonian remote sites (except for OC). For PM10, there is dominance of insoluble mineral matter (33 %–56 % of the mass), organic matter (7 %–34 %), and secondary inorganic aerosol (15 %–26 %). Chemical composition profiles were identified for different origins: EC, NO−3 , NH+4 , glucose, and C2O24− for the nearby urban and rural areas; OC, EC, NO−3 , K+, acetate, formate, levoglucosan, and some F− and Br− for biomass burning; MeSO−3 , Na+, Mg2+, K+, and Ca2+ for aged marine emissions from the Pacific Ocean; arabitol, mannitol, and glucose for biogenic emissions; Na+, Ca2+, Mg2+, and K+ for soil dust; and SO24−, F−, and some Cl− for volcanism. Regional biomass burning practices influence the soluble fraction of the aerosol between June and November. The organic fraction is present all year round and has both anthropogenic (biomass burning and other combustion sources) and natural (primary and secondary biogenic emissions) origins, with the OC/EC mass ratio being practically constant all year round (10.5 ± 5.7, IQR 8.1–13.3). Peruvian volcanism has dominated the SO24− concentration since 2014, though it presents strong temporal variability due to the intermittence of the sources and seasonal changes in the transport patterns. These measurements represent some of the first long-term observations of aerosol chemical composition at a continental high-altitude site in the tropical Southern Hemisphere.The instrumental deployment was supported by the French Ministère de la Recherche under ACTRIS-FR activities, the Centre National de la Recherche Scientifique (CNRS) under the SNO-CLAP program, and the Observatoire de Sciences de l’Univers de Grenoble under Labex OSUG@2020. Analytical aspects of this research have been supported at IGE by the Air-O-Sol platform within Labex OSUG@2020 (ANR10 LABX56).Peer reviewedEuropean Geosciences UnionConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/350654https://api.elsevier.com/content/abstract/scopus_id/85186877203reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésAtmospheric Chemistry and Physicshttps://doi.org/10.5194/acp-24-2837-2024Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3506542026-05-22T06:33:51Z |
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15,81155 |