Articles | Volume 26, issue 21
https://doi.org/10.5194/acp-26-15853-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-15853-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
11 Nov 2026
Research article |
| 11 Nov 2026
| 11 Nov 2026
Drivers of biogenic secondary organic aerosol from the past to the future
Civil and Environmental Engineering Department, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Atmospheric, Climate, and Earth Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
Colette L. Heald
CORRESPONDING AUTHOR
Institute for Atmospheric and Climate Science, ETH Zurich, Zurich, 8092, Switzerland
Jesse H. Kroll
Civil and Environmental Engineering Department, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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Short summary
We implement secondary organic aerosol (SOA) formation pathways due to peroxy radical (RO2) isomerization and accretion reactions in the CESM2 model. The contribution of RO2 pathways to SOA formation varies from the past to the future; for monoterpenes RO2, isomerization remains important under all climate conditions. We also quantify changes in total biogenic SOA burden under different climates. Our study highlights the need to better represent RO2 chemistry in SOA modeling.
We implement secondary organic aerosol (SOA) formation pathways due to peroxy radical (RO2)...
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