Non-linear effects of secondary organic aerosol formation and properties in multi-precursor systems

Takeuchi, Masayuki; Berkemeier, Thomas; Eris, Gamze; Ng, Nga Lee

doi:10.1038/s41467-022-35546-1

i

Non-linear effects of secondary organic aerosol formation and properties in multi-precursor systems

2022
By Takeuchi, Masayuki ; Berkemeier, Thomas ; Eris, Gamze ; ...

Details

Journal Title:

Nature Communications
Personal Author:

Takeuchi, Masayuki ; Berkemeier, Thomas ; Eris, Gamze ; Ng, Nga Lee
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research)
Description:

Secondary organic aerosol (SOA) contributes significantly to ambient fine particulate matter that affects climate and human health. Monoterpenes represent an important class of biogenic volatile organic compounds (VOCs) and their oxidation by nitrate radicals poses a substantial source of SOA globally. Here, we investigate the formation and properties of SOA from nitrate radical oxidation of two common monoterpenes, α-pinene and limonene. When two monoterpenes are oxidized simultaneously, we observe a ~50% enhancement in the formation of SOA from α-pinene and a ~20% reduction in limonene SOA formation. The change in SOA yields is accompanied by pronounced changes in aerosol chemical composition and volatility. These non-linear effects are not observed in a sequential oxidation experiment. Our results highlight that unlike currently assumed in atmospheric models, the interaction of products formed from individual VOCs should be accounted for to accurately describe SOA formation and its climate and health impacts.
Keywords:

General Biochemistry, Genetics And Molecular Biology General Chemistry General Physics And Astronomy Multidisciplinary General Biochemistry, Genetics And Molecular Biology General Physics And Astronomy General Biochemistry, Genetics And Molecular Biology General Physics And Astronomy
Source:

Nature Communications, 13(1)
DOI:

https://doi.org/10.1038/s41467-022-35546-1
ISSN:

2041-1723
Format:

PDF
Publisher:

Springer Science and Business Media LLC
Document Type:

Journal Article
Funding:

Grant no. NA18OAR4310112
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Library
Main Document Checksum:

urn:sha256:8d4435a04041ddc1452a1c8b6b7b6176df6e56e18e710b01fae84d5afaaf3f74
Download URL:

https://repository.library.noaa.gov/view/noaa/58581/noaa_58581_DS1.pdf
File Type:

[PDF - 2.40 MB ]

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