Unaccounted impacts of diterpene emissions on atmospheric aerosol loadings
Diterpenes, found in trees, have been overlooked in atmospheric chemistry due to their low volatility and presumed negligible emissions. However, advances in sampling and analytical methods now allow for their detection in the gas phase. Here we quantify diterpene emission factors and evaluate their...
| Autores: | , , , , , , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/397602 |
| Acceso en línea: | http://hdl.handle.net/10261/397602 https://api.elsevier.com/content/abstract/scopus_id/105012766038 |
| Access Level: | acceso abierto |
| Palabra clave: | Diterpene emissions Diterpenes Atmospheric aerosols http://metadata.un.org/sdg/3 http://metadata.un.org/sdg/11 http://metadata.un.org/sdg/9 Ensure healthy lives and promote well-being for all at all ages Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation Make cities and human settlements inclusive, safe, resilient and sustainable |
| Sumario: | Diterpenes, found in trees, have been overlooked in atmospheric chemistry due to their low volatility and presumed negligible emissions. However, advances in sampling and analytical methods now allow for their detection in the gas phase. Here we quantify diterpene emission factors and evaluate their role in secondary organic aerosol formation. By incorporating all available emission data and laboratory-derived aerosol yields into the MONARCH chemistry transport model, we assessed their atmospheric contribution. Chamber experiments revealed kaurene yields of 1.8–17%, indicating efficient gas-to-particle conversion. Global emissions were estimated at 11.5 (0.1–94.3) Tg yr<sup>−</sup>¹, contributing 0.63 (0.005–5.19) Tg yr<sup>−</sup>¹ to secondary organic aerosol production and a burden of 0.008 (0.00007–0.07) Tg. This corresponds to 13%, 6.4%, and 19% of the aerosol burden from isoprene, monoterpenes, and sesquiterpenes, respectively. These results demonstrate that diterpenes are a previously underestimated, but potentially important, source of secondary organic aerosol, with implications for biosphere-atmosphere interactions. |
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