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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
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Nitrous acid (HONO) plays a crucial role in the self-cleansing capacity of the atmosphere but its formation mechanisms and spatial distributions are not well understood. This paper presents spectroscopic measurements of HONO, NO2 and aerosol measurements from Melbourne, Australia. HONO levels are at a maximum in the middle of the day, which is unprecedented for an urban area, and these measurements provide evidence for the existence of a strong ground-based, daytime nitrogen oxide source.
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Articles | Volume 18, issue 19
Atmos. Chem. Phys., 18, 13969–13985, 2018
https://doi.org/10.5194/acp-18-13969-2018
Atmos. Chem. Phys., 18, 13969–13985, 2018
https://doi.org/10.5194/acp-18-13969-2018

Research article 02 Oct 2018

Research article | 02 Oct 2018

Daytime HONO, NO2 and aerosol distributions from MAX-DOAS observations in Melbourne

Robert G. Ryan et al.

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Latest update: 17 Jan 2021
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Short summary
Nitrous acid (HONO) plays a crucial role in the self-cleansing capacity of the atmosphere but its formation mechanisms and spatial distributions are not well understood. This paper presents spectroscopic measurements of HONO, NO2 and aerosol measurements from Melbourne, Australia. HONO levels are at a maximum in the middle of the day, which is unprecedented for an urban area, and these measurements provide evidence for the existence of a strong ground-based, daytime nitrogen oxide source.
Citation
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Final-revised paper
Preprint