Wildfire smoke plumes transport under a subsidence inversion: Climate and health implications in a distant urban area
[EN] This study shows the influence of two large wildfires (one of which was the largest wildfire ever recorded in the region of Castilla y León) in the north-west of the Iberian Peninsula upon the atmospheric air quality of the city of León, Spain, at approximately 70 km from the fires, on days wit...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2018 |
| País: | España |
| Institución: | Universidad de León |
| Repositorio: | BULERIA. Repositorio Institucional de la Universidad de León |
| OAI Identifier: | oai:buleria.unileon.es:10612/26121 |
| Acceso en línea: | https://www.sciencedirect.com/science/article/pii/S0048969717331996 https://hdl.handle.net/10612/26121 |
| Access Level: | acceso abierto |
| Palabra clave: | Ecología. Medio ambiente Física Aerosol size distributions Direct radiative forcing Respirable fraction Subsidence inversion Wildfire 3106.99 Otras (Incendios forestales) 2509.02 Contaminación Atmosférica 3214 Toxicología |
| Sumario: | [EN] This study shows the influence of two large wildfires (one of which was the largest wildfire ever recorded in the region of Castilla y León) in the north-west of the Iberian Peninsula upon the atmospheric air quality of the city of León, Spain, at approximately 70 km from the fires, on days with a strong subsidence inversion associated with high pressures. The vertical dispersion of the smoke plume was inhibited and this caused an increase in the particulate matter (PM) in the atmosphere. During this event, average values of up to 1700 ± 600 particles cm− 3 were registered, most of which corresponding to the smallest fraction of the fine mode. On the other hand, the count median diameter of the fine mode (CMDf) increased gradually from 0.09 to 0.14 μm. The PM10 and PM2.5 reached hourly values of 89 and 36 μg m− 3, respectively. This study also estimates the changes in the optical properties of the particles as well as the associated radiative forcing. The presence of an important load of absorbing aerosols was detected, with instantaneous radiative atmospheric forcing up to + 134.6 W m− 2. The estimations of the respirable fractions showed in healthy adults high levels of mass concentration of the aerosol that reaches the bronchioles and alveoli (up to 43 μg m− 3) |
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