RT info:eu-repo/semantics/article
T1 Quantification of source specific black carbon scavenging using an aethalometer and a disdrometer
A1 Blanco Alegre, Carlos del
A1 Calvo Gordaliza, Ana Isabel
A1 Coz Diego, Esther
A1 Castro Izquierdo, Amaya
A1 Oduber Pérez, Fernanda Isabel
A1 Prév̂ot, André Stephan Henry
A1 Močnik, Griša
A1 Fraile Laiz, Roberto
A2 Fisica Aplicada
K1 Física
K1 Black carbon
K1 BC scavenging estimation model
K1 Raindrop diameter
K1 Rainfal
K1 Scavenging coefficient
K1 Wet deposition
K1 2509.02 Contaminación Atmosférica
K1 2210 Química Física
K1 3308 Ingeniería y Tecnología del Medio Ambiente
AB [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
PB Elsevier
SN 0269-7491
LK https://hdl.handle.net/10612/18040
UL https://hdl.handle.net/10612/18040
NO 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
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 05-jun-2024