Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/217616
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Urban aerosol size distributions over the Mediterranean city of Barcelona, NE Spain |
Autor: | Dall'Osto, Manuel CSIC ORCID CVN ; Beddows, D.C.S.; Pey, Jorge CSIC ORCID ; Rodríguez, S.; Alastuey, Andrés CSIC ORCID; Harrison, Roy M.; Querol, Xavier CSIC ORCID | Fecha de publicación: | 2012 | Editor: | European Geophysical Society | Citación: | Atmospheric Chemistry and Physics 12: 10693- 10707 (2012) | Resumen: | Differential mobility particle sizer (DMPS) aerosol concentrations (N13-800) were collected over a one-year-period (2004) at an urban background site in Barcelona, North-Eastern Spain. Quantitative contributions to particle number concentrations of the nucleation (33-39%), Aitken (39-49%) and accumulation mode (18-22%) were estimated. We examined the source and time variability of atmospheric aerosol particles by using both K-means clustering and Positive Matrix Factorization (PMF) analysis. Performing clustering analysis on hourly size distributions, nine K-means DMPS clusters were identified and, by directional association, diurnal variation and relationship to meteorological and pollution variables, four typical aerosol size distribution scenarios were identified: traffic (69% of the time), dilution (15% of the time), summer background conditions (4% of the time) and regional pollution (12% of the time). According to the results of PMF, vehicle exhausts are estimated to contribute at least to 62-66% of the total particle number concentration, with a slightly higher proportion distributed towards the nucleation mode (34%) relative to the Aitken mode (28-32%). Photochemically induced nucleation particles make only a small contribution to the total particle number concentration (2-3% of the total), although only particles larger than 13 nm were considered in this study. Overall the combination of the two statistical methods is successful at separating components and quantifying relative contributions to the particle number population. © 2012 Author(s). | Versión del editor: | http://dx.doi.org/10.5194/acp-12-10693-2012 | URI: | http://hdl.handle.net/10261/217616 | DOI: | 10.5194/acp-12-10693-2012 | Identificadores: | doi: 10.5194/acp-12-10693-2012 issn: 1680-7316 |
Aparece en las colecciones: | (IDAEA) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
acp-12-10693-2012.pdf | 1,72 MB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
55
checked on 11-may-2024
WEB OF SCIENCETM
Citations
54
checked on 27-feb-2024
Page view(s)
135
checked on 13-may-2024
Download(s)
92
checked on 13-may-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.