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Título: | Dynamics of volatile organic compounds in a western Mediterranean oak forest |
Autor: | Yáñez-Serrano, Ana María CSIC ORCID; Bach, Albert; Bartolomé-Català, David; Matthaios, Vasileios; Seco, Roger CSIC ORCID ; Llusia, Joan CSIC ORCID; Filella, Iolanda CSIC ORCID; Peñuelas, Josep CSIC ORCID | Palabras clave: | Volatile organic compounds Montseny Natural Park Positive matrix factorization Biogenic and anthropogenic VOC interaction |
Fecha de publicación: | 15-jul-2021 | Editor: | Elsevier | Citación: | Atmospheric Environment 257: 118447 (2021) | Resumen: | Volatile organic compounds (VOCs) are emitted from many sources and have important implications for plant fitness, ecological interactions, and atmospheric processes, including photochemistry and ozone formation. Forest ecosystems are strong sources of biogenic VOCs. We aimed to characterize forest below-canopy VOC mixing ratios, monitored by Proton Transfer Reaction Mass Spectrometry (PTR-MS), at Montseny Natural Park, a Mediterranean forest 50 km from the Barcelona urban area. Measurements were taken every 2 min during six months around the maximum emission period of summer. All VOCs had diel cycles with higher mixing ratios during the day, but different patterns over time. Monitored VOCs were grouped as biogenic, oxygenated, or aromatic compounds. Additionally, a positive matrix factorization analysis identified four emission profiles that were attributed to photochemical VOC production, biogenic emissions, mixed VOC emission sources, and traffic emissions. Even though the biogenic source was the strongest source profile at the site, we found a strong influence of anthropogenic air masses infiltrating the forest canopy and altering the biogenic air masses at the site. | Versión del editor: | https://doi.org/10.1016/j.atmosenv.2021.118447 | URI: | http://hdl.handle.net/10261/245069 | DOI: | 10.1016/j.atmosenv.2021.118447 |
Aparece en las colecciones: | (IDAEA) Artículos |
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