Butene emissions from coastal ecosystems may contribute to new particle formation
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Authors
Mas, Sébastien
Filippi, Daniele
Bourrianne, Thierry
Burnet, Frédéric
Chikwililwa, Chibo
Desboeufs, Karine
Feron, Anaïs
Michoud, Vincent
Piketh, Stuart J
Journal Title
Geophysical Research Letters
ISSN
0094-8276
Publisher
American Geophysical Union (AGU)
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Giorio, C., Doussin, J., D’Anna, B., Mas, S., Filippi, D., Denjean, C., Mallet, M. D., et al. (2022). Butene emissions from coastal ecosystems may contribute to new particle formation. Geophysical Research Letters https://doi.org/10.1029/2022gl098770
Abstract
Marine ecosystems are important drivers of the global climate system. They emit volatile species into the atmosphere, involved in complex reaction cycles that influence the lifetime of greenhouse gases. Sea spray and marine biogenic aerosols affect Earth’s climate by scattering solar radiation and controlling cloud microphysical properties. Here we show larger than expected marine biogenic emissions of butenes, three orders of magnitude higher than dimethyl sulphide, produced by the coastal part of the Benguela upwelling system, one of the most productive marine ecosystems in the world. We show that these emissions may contribute to new particle formation in the atmosphere within the marine boundary layer through production of Criegee intermediates that oxidise SO2 to H2SO4. Butene emissions from the marine biota may affect air quality and climate through ozone, secondary organic aerosol, and cloud condensation nuclei formation even in pristine regions of the world. Our results indicate a potentially important role of butene emissions in marine particle formation that requires investigation in other regions.
Identifiers
External DOI: https://doi.org/10.1029/2022gl098770
This record's URL: https://www.repository.cam.ac.uk/handle/1810/337050
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