Articles | Volume 21, issue 24
Atmos. Chem. Phys., 21, 18213–18225, 2021
https://doi.org/10.5194/acp-21-18213-2021
Atmos. Chem. Phys., 21, 18213–18225, 2021
https://doi.org/10.5194/acp-21-18213-2021
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 et al.

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Latest update: 06 Jul 2022
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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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