Articles | Volume 19, issue 20
Atmos. Chem. Phys., 19, 13289–13308, 2019
https://doi.org/10.5194/acp-19-13289-2019
Atmos. Chem. Phys., 19, 13289–13308, 2019
https://doi.org/10.5194/acp-19-13289-2019

Research article 28 Oct 2019

Research article | 28 Oct 2019

Semi-quantitative understanding of source contribution to nitrous acid (HONO) based on 1 year of continuous observation at the SORPES station in eastern China

Yuliang Liu et al.

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Subject: Gases | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
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Cited articles

Acker, K., Febo, A., Trick, S., Perrino, C., Bruno, P., Wiesen, P., Möller, D., Wieprecht, W., Auel, R., and Giusto, M.: Nitrous acid in the urban area of Rome, Atmos. Environ., 40, 3123–3133, 2006. 
Ackermann, R.: Auswirkungen von Kraftfahrzeugemissionen in der urbanen Atmosphäre, Dissertation, Germany, 2000. 
Alicke, B.: Impact of nitrous acid photolysis on the total hydroxyl radical budget during the Limitation of Oxidant Production/Pianura Padana Produzione di Ozono study in Milan, J. Geophys. Res., 107, 8196, https://doi.org/10.1029/2000jd000075, 2002. 
Alicke, B.: OH formation by HONO photolysis during the BERLIOZ experiment, J. Geophys. Res., 108, 8247, https://doi.org/10.1029/2001jd000579, 2003. 
Alicke, B., Platt, U., and Stutz, J.: Impact of nitrous acid photolysis on the total hydroxyl radical budget during the Limitation of Oxidant Production/Pianura Padana Produzione di Ozono study in Milan, J. Geophys. Res.-Atmos., 107, LOP 9-1–LOP 9-17, https://doi.org/10.1029/2000JD000075, 2002. 
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We conducted 1-year continuous measurement of HONO at the SORPES station. We obtained seasonal and diurnal variations of HONO and evaluated the contribution of HONO photolysis to OH radical and the missing daytime source of HONO. We separated the sources of nocturnal HONO into four parts: combustion emissions, soil emission, formation on ground and formation on aerosol, and estimate their contribution semi-quantitatively. The results highlighted ever-changing contributions of HONO sources.
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