1. Butene Emissions From Coastal Ecosystems May Contribute to New Particle Formation
- Author
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Giorio, Chiara, Doussin, Jean‐François, D’Anna, Barbara, Mas, Sébastien, Filippi, Daniele, Denjean, Cyrielle, Mallet, Marc Daniel, Bourrianne, Thierry, Burnet, Frédéric, Cazaunau, Mathieu, Chikwililwa, Chibo, Desboeufs, Karine, Feron, Anaïs, Michoud, Vincent, Namwoonde, Andreas, Andreae, Meinrat O, Piketh, Stuart J, Formenti, Paola, Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA (UMR_7583)), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Laboratoire Chimie de l'environnement (LCE), Aix Marseille Université (AMU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Observatoire de REcherche Méditerranéen de l'Environnement (OSU OREME), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université de Montpellier (UM), Giorio, Chiara [0000-0001-7821-7398], Doussin, Jean‐François [0000-0002-8042-7228], D’Anna, Barbara [0000-0003-1985-229X], Denjean, Cyrielle [0000-0001-5559-5732], Mallet, Marc Daniel [0000-0003-2749-8833], Cazaunau, Mathieu [0000-0003-4024-8978], Namwoonde, Andreas [0000-0003-1209-2574], Andreae, Meinrat O [0000-0003-1968-7925], Formenti, Paola [0000-0002-0372-1351], Apollo - University of Cambridge Repository, Université Montpellier 2 - Sciences et Techniques (UM2)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université de Montpellier (UM), Giorio, C [0000-0001-7821-7398], Doussin, JF [0000-0002-8042-7228], D’Anna, B [0000-0003-1985-229X], Denjean, C [0000-0001-5559-5732], Mallet, MD [0000-0003-2749-8833], Cazaunau, M [0000-0003-4024-8978], Namwoonde, A [0000-0003-1209-2574], Andreae, MO [0000-0003-1968-7925], and Formenti, P [0000-0002-0372-1351]
- Subjects
13 Climate Action ,Geophysics ,[SDU]Sciences of the Universe [physics] ,[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology ,3701 Atmospheric Sciences ,General Earth and Planetary Sciences ,37 Earth Sciences ,41 Environmental Sciences - Abstract
International audience; 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 sulfide, 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 oxidize 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.
- Published
- 2022
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