Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 21, issue 24
Articles | Volume 21, issue 24
https://doi.org/10.5194/acp-21-18213-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-21-18213-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 24
Research article
 | 
16 Dec 2021
Research article |  | 16 Dec 2021

Is the ocean surface a source of nitrous acid (HONO) in the marine boundary layer?

Leigh R. Crilley, Louisa J. Kramer, Francis D. Pope, Chris Reed, James D. Lee, Lucy J. Carpenter, Lloyd D. J. Hollis, Stephen M. Ball, and William J. Bloss

Supplement

https://doi.org/10.5194/acp-21-18213-2021-supplement

Data sets

ICOZA: Atmospheric species measurements of OH, HONO, HO2, NO, NO2, NOy, O3, SO2 and CO from Weybourne Atmosphere Observatory July 2015 Leigh Crilley, Louisa Kramer, Chris Reed, James D. Lee, Rob Massey-Woodward, Lisa Whalley, Grant Forster, and Brian Bandy https://catalogue.ceda.ac.uk/uuid/ddf1032d626b45f78ce1c5e94f289a66

Cape Verde Atmospheric Observatory: NOxy measurements National Centre for Atmospheric Science https://catalogue.ceda.ac.uk/uuid/6035249fcd5e7643f63a85e0c113fafc

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Short summary
Nitrous acid (HONO) is a key source of atmospheric oxidants. We evaluate if the ocean surface is a source of HONO for the marine boundary layer, using measurements from two contrasting coastal locations. We observed no evidence for a night-time ocean surface source, in contrast to previous work. This points to significant geographical variation in the predominant HONO formation mechanisms in marine environments, reflecting possible variability in the sea-surface microlayer composition.
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