Evolution of size-segregated aerosol concentration in NW Spain: A two-step classification to identify new particle formation events

[EN] Real-time measurements of particles in the 15–736 nm range have been obtained by a Scanning Mobility Particle Sizer to characterize the evolution of particle size distribution and new particle formation (NPF) events in an urban background area. The annual, weekly and diurnal variations of the m...

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Autores: Blanco Alegre, Carlos del, Calvo Gordaliza, Ana Isabel, Alonso Blanco, Elisabeth, Castro Izquierdo, Amaya, Oduber Pérez, Fernanda Isabel, Fraile Laiz, Roberto
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2022
País:España
Institución:Universidad de León
Repositorio:BULERIA. Repositorio Institucional de la Universidad de León
OAI Identifier:oai:buleria.unileon.es:10612/26161
Acceso en línea:https://www.sciencedirect.com/science/article/pii/S0301479721022945
https://hdl.handle.net/10612/26161
Access Level:acceso abierto
Palabra clave:Física
Meteorología
Ambient ultrafine particles
Meteorological parameters
New particle formation
Particle size distribution
Planetary boundary layer
2509.02 Contaminación Atmosférica
2501.22 Física de las Precipitaciones
2509 Meteorología
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oai_identifier_str oai:buleria.unileon.es:10612/26161
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Evolution of size-segregated aerosol concentration in NW Spain: A two-step classification to identify new particle formation events
title Evolution of size-segregated aerosol concentration in NW Spain: A two-step classification to identify new particle formation events
spellingShingle Evolution of size-segregated aerosol concentration in NW Spain: A two-step classification to identify new particle formation events
Blanco Alegre, Carlos del
Física
Meteorología
Ambient ultrafine particles
Meteorological parameters
New particle formation
Particle size distribution
Planetary boundary layer
2509.02 Contaminación Atmosférica
2501.22 Física de las Precipitaciones
2509 Meteorología
title_short Evolution of size-segregated aerosol concentration in NW Spain: A two-step classification to identify new particle formation events
title_full Evolution of size-segregated aerosol concentration in NW Spain: A two-step classification to identify new particle formation events
title_fullStr Evolution of size-segregated aerosol concentration in NW Spain: A two-step classification to identify new particle formation events
title_full_unstemmed Evolution of size-segregated aerosol concentration in NW Spain: A two-step classification to identify new particle formation events
title_sort Evolution of size-segregated aerosol concentration in NW Spain: A two-step classification to identify new particle formation events
dc.creator.none.fl_str_mv Blanco Alegre, Carlos del
Calvo Gordaliza, Ana Isabel
Alonso Blanco, Elisabeth
Castro Izquierdo, Amaya
Oduber Pérez, Fernanda Isabel
Fraile Laiz, Roberto
author Blanco Alegre, Carlos del
author_facet Blanco Alegre, Carlos del
Calvo Gordaliza, Ana Isabel
Alonso Blanco, Elisabeth
Castro Izquierdo, Amaya
Oduber Pérez, Fernanda Isabel
Fraile Laiz, Roberto
author_role author
author2 Calvo Gordaliza, Ana Isabel
Alonso Blanco, Elisabeth
Castro Izquierdo, Amaya
Oduber Pérez, Fernanda Isabel
Fraile Laiz, Roberto
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Fisica Aplicada
Facultad de Ciencias Biologicas y Ambientales
dc.subject.none.fl_str_mv Física
Meteorología
Ambient ultrafine particles
Meteorological parameters
New particle formation
Particle size distribution
Planetary boundary layer
2509.02 Contaminación Atmosférica
2501.22 Física de las Precipitaciones
2509 Meteorología
topic Física
Meteorología
Ambient ultrafine particles
Meteorological parameters
New particle formation
Particle size distribution
Planetary boundary layer
2509.02 Contaminación Atmosférica
2501.22 Física de las Precipitaciones
2509 Meteorología
description [EN] Real-time measurements of particles in the 15–736 nm range have been obtained by a Scanning Mobility Particle Sizer to characterize the evolution of particle size distribution and new particle formation (NPF) events in an urban background area. The annual, weekly and diurnal variations of the modal (nucleation (Nnuc), Aitken (NAit) and accumulation (Nacc)) particle concentrations were characterised. The NAit and Nacc registered their maximums in cold months during rush hours, in the morning (0600–0900 UTC) and in the afternoon (1700–2000 UTC), while the maximums for Nnuc were reached in warm months during midday hours. NAit, Nacc and Ntotal showed a significant negative correlation with wind speed and a different relationship with the planetary boundary layer (PBL) height by periods. In the warm period, a positive significant correlation between PBL and Nnuc was registered, indicating that the higher dispersion promoted by a high PBL causes favourable conditions for the occurrence of NPF events (a low polluted atmosphere). NPF processes are one of the main sources of ultrafine particles (<100 nm) in the warm period. After a visual-based classification, 45 NPF events of type Ia (strong and with a good confidence level) were identified and analysed, occurring primarily between 1100 and 1500 UTC, mainly in spring and summer. In addition, a two-step method was developed for identifying NPF events: cluster analysis followed by discriminant analysis. The application of discriminant analysis to one of the clusters, grouping 93 days, enabled us to identify 55 of the 56 NPF events days included in the cluster. This method is a valuable tool for identifying NPF events quickly and effectively
publishDate 2022
dc.date.none.fl_str_mv 2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://www.sciencedirect.com/science/article/pii/S0301479721022945
https://hdl.handle.net/10612/26161
url https://www.sciencedirect.com/science/article/pii/S0301479721022945
https://hdl.handle.net/10612/26161
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/AEI/Programa Estatal de I+D+i Orientada a los Retos de la Sociedad/RTI2018-098189-B-I00
info:eu-repo/grantAgreement/MINECO/Programa Estatal de I+D+I Orientada a los Retos de la Sociedad/CGL2014-52556–R
info:eu-repo/grantAgreement/AEI/Programa Estatal de Generación de Conocimiento y Fortalecimiento Científico y Tecnológico del Sistema de I+D+i/PID2019-106164RB-I00
info:eu-repo/grantAgreement/Junta de Castilla y León/LE025P20/ES
info:eu-repo/grantAgreement/MECD/Programa Estatal de Promoción del Talento y su Empleabilidad/FPU16
info:eu-repo/grantAgreement/MINECO/Programa Estatal de Promoción del Talento y su Empleabilidad/BES-2015-074473
dc.rights.none.fl_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:BULERIA. Repositorio Institucional de la Universidad de León
instname:Universidad de León
instname_str Universidad de León
reponame_str BULERIA. Repositorio Institucional de la Universidad de León
collection BULERIA. Repositorio Institucional de la Universidad de León
repository.name.fl_str_mv
repository.mail.fl_str_mv
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spelling Evolution of size-segregated aerosol concentration in NW Spain: A two-step classification to identify new particle formation eventsBlanco Alegre, Carlos delCalvo Gordaliza, Ana IsabelAlonso Blanco, ElisabethCastro Izquierdo, AmayaOduber Pérez, Fernanda IsabelFraile Laiz, RobertoFísicaMeteorologíaAmbient ultrafine particlesMeteorological parametersNew particle formationParticle size distributionPlanetary boundary layer2509.02 Contaminación Atmosférica2501.22 Física de las Precipitaciones2509 Meteorología[EN] Real-time measurements of particles in the 15–736 nm range have been obtained by a Scanning Mobility Particle Sizer to characterize the evolution of particle size distribution and new particle formation (NPF) events in an urban background area. The annual, weekly and diurnal variations of the modal (nucleation (Nnuc), Aitken (NAit) and accumulation (Nacc)) particle concentrations were characterised. The NAit and Nacc registered their maximums in cold months during rush hours, in the morning (0600–0900 UTC) and in the afternoon (1700–2000 UTC), while the maximums for Nnuc were reached in warm months during midday hours. NAit, Nacc and Ntotal showed a significant negative correlation with wind speed and a different relationship with the planetary boundary layer (PBL) height by periods. In the warm period, a positive significant correlation between PBL and Nnuc was registered, indicating that the higher dispersion promoted by a high PBL causes favourable conditions for the occurrence of NPF events (a low polluted atmosphere). NPF processes are one of the main sources of ultrafine particles (<100 nm) in the warm period. After a visual-based classification, 45 NPF events of type Ia (strong and with a good confidence level) were identified and analysed, occurring primarily between 1100 and 1500 UTC, mainly in spring and summer. In addition, a two-step method was developed for identifying NPF events: cluster analysis followed by discriminant analysis. The application of discriminant analysis to one of the clusters, grouping 93 days, enabled us to identify 55 of the 56 NPF events days included in the cluster. This method is a valuable tool for identifying NPF events quickly and effectivelySIThis work was partially supported by the Spanish Ministry of Science, Innovation and Universities (Grant RTI2018-098189-B-I00), the AERORAIN project (Ministry of Economy and Competitiveness, Grant CGL2014-52556-R, co-financed with FEDER funds), the University of León (Programa Propio 2018/00203/001) and the AEROHEALTH project (Ministry of Science and Innovation, Grant PID2019-106164RB-I00, co-financed with European FEDER funds). This study was also partially supported by the Junta de Castilla y León co-financed with European FEDER funds (Grant LE025P20). C. del Blanco Alegre and F. Oduber acknowledge the grants FPU16/05764 and BES-2015-074473 from the Spanish Ministries of Education and of Economy and Competitiveness, respectivelyElsevierFisica AplicadaFacultad de Ciencias Biologicas y Ambientales2022info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttps://www.sciencedirect.com/science/article/pii/S0301479721022945https://hdl.handle.net/10612/26161reponame:BULERIA. Repositorio Institucional de la Universidad de Leóninstname:Universidad de LeónInglésinfo:eu-repo/grantAgreement/AEI/Programa Estatal de I+D+i Orientada a los Retos de la Sociedad/RTI2018-098189-B-I00info:eu-repo/grantAgreement/MINECO/Programa Estatal de I+D+I Orientada a los Retos de la Sociedad/CGL2014-52556–Rinfo:eu-repo/grantAgreement/AEI/Programa Estatal de Generación de Conocimiento y Fortalecimiento Científico y Tecnológico del Sistema de I+D+i/PID2019-106164RB-I00info:eu-repo/grantAgreement/Junta de Castilla y León/LE025P20/ESinfo:eu-repo/grantAgreement/MECD/Programa Estatal de Promoción del Talento y su Empleabilidad/FPU16info:eu-repo/grantAgreement/MINECO/Programa Estatal de Promoción del Talento y su Empleabilidad/BES-2015-074473http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:buleria.unileon.es:10612/261612026-06-24T12:43:27Z
score 15,81155

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