Compartir
Título
Quantification of source specific black carbon scavenging using an aethalometer and a disdrometer
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
Environmental Pollution
Datos de la obra
Blanco-Alegre, C., Calvo, A. I., Coz, E., Castro, A., Oduber, F., Prévôt, A. S. H., Močnik, G. & Fraile, R. (2019). Quantification of source specific black carbon scavenging using an aethalometer and a disdrometer. Environmental Pollution, 246, 336-345. https://doi.org/10.1016/J.ENVPOL.2018.11.102
Editor
Elsevier
Fecha
2019-03
ISSN
0269-7491
Abstract
[EN] Aerosol black carbon (BC) is the second strongest contributor to global warming, after CO2, and it is linked to many adverse health effects. A sampling campaign of 15 months was carried out in León (Spain) in order to evaluate the scavenging of BC with an ensemble aethalometer-disdrometer. The aethalometer provides the concentration of equivalent black carbon (eBC), and the disdrometer, the raindrop size distribution. A total of seventy-five rain events were studied and in 73% of them there was an effective (eBCinitial > eBCfinal) scavenging, with a mean decrease of 48 ± 37% in long rain events (>8 h) and 39 ± 38% in short rain events. The scavenging of BC is strongly related to its source. Thus, the scavenging coefficient (SC) mean value of the BC from fossil fuel (eBCff) for short and long rain events was 5.1 10−5 and 1.3 10−5 s−1, respectively. For the BC from biomass burning (eBCbb), the SC values were 1.6 10−4 and 2.8 10−5 s−1 in short and long events, respectively. There was a significant positive correlation between the SC and the number of drops with diameters between 0.375 and 2.5 mm. Rain scavenging of eBC was analyzed depending on the air mass origin obtaining an effective scavenging for air masses from Atlantic, Arctic and Africa. A linear model (R2 = 0.72) was built to estimate the ΔeBC values with variables from an aethalometer, a disdrometer and a weather station: eBC concentration before rain, swept volume and precipitation accumulated. A Kolmogorov-Smirnov statistical test confirmed the goodness of fit of the model to the measured data
Materia
Palabras clave
Peer review
SI
ID proyecto
- info:eu-repo/grantAgreement/ MINECO/Programa Estatal de I+D+I Orientada a los Retos de la Sociedad/TEC2014-57821-R/ES/Caracterización experimental de la propagación atmosférica y modelado de canal en ondas milimétricas, orientados a su futuro uso en redes de comunicaciones fijas y móviles 5G
- info:eu-repo/grantAgreement/MINECO/Programa Estatal de I+D+I Orientada a los Retos de la Sociedad/CGL2014-52556-R/ES/Influencia de la precipitación en la concentración de material particulado y de polen: consecuencias climáticas y clínicas/AERORAIN
- info:eu-repo/grantAgreement/MECD/Programa Estatal de Promoción del Talento y su Empleabilidad/FPU16/05764
- info:eu-repo/grantAgreement/MINECO/Programa Estatal de Promoción del Talento y su Empleabilidad/BES-2015-074473
URI
DOI
Versión del editor
Collections
- Untitled [5268]
Files in this item
Tamaño:
3.049
xmlui.dri2xhtml.METS-1.0.size-megabytes
Formato:
Adobe PDF