Articles | Volume 15, issue 2
https://doi.org/10.5194/acp-15-799-2015
https://doi.org/10.5194/acp-15-799-2015
Research article
 | 
23 Jan 2015
Research article |  | 23 Jan 2015

A comparison of HONO budgets for two measurement heights at a field station within the boreal forest in Finland

R. Oswald, M. Ermel, K. Hens, A. Novelli, H. G. Ouwersloot, P. Paasonen, T. Petäjä, M. Sipilä, P. Keronen, J. Bäck, R. Königstedt, Z. Hosaynali Beygi, H. Fischer, B. Bohn, D. Kubistin, H. Harder, M. Martinez, J. Williams, T. Hoffmann, I. Trebs, and M. Sörgel

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Observation and modelling of HOx radicals in a boreal forest
K. Hens, A. Novelli, M. Martinez, J. Auld, R. Axinte, B. Bohn, H. Fischer, P. Keronen, D. Kubistin, A. C. Nölscher, R. Oswald, P. Paasonen, T. Petäjä, E. Regelin, R. Sander, V. Sinha, M. Sipilä, D. Taraborrelli, C. Tatum Ernest, J. Williams, J. Lelieveld, and H. Harder
Atmos. Chem. Phys., 14, 8723–8747, https://doi.org/10.5194/acp-14-8723-2014,https://doi.org/10.5194/acp-14-8723-2014, 2014

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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

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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., 107, LOP9-1-LOP9-LOP9-17, https://doi.org/10.1029/2000jd000075, 2002.
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Aubin, D. G. and Abbatt, J. P. D.: Interaction of NO2 with hydrocarbon soot: focus on HONO yield, surface modification, and mechanism, J. Phys. Chem. A, 111, 6263–6273, 2007.
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Short summary
Nitrous acid (HONO) is a key species in atmospheric photochemistry since the photolysis leads to the important hydroxyl radical (OH). Although the importance of HONO as a precursor of OH is known, the formation pathways of HONO, especially during daytime, are a major challenge in atmospheric science. We present a detailed analysis of sources and sinks for HONO in the atmosphere for a field measurement campaign in the boreal forest in Finland and wonder if there is really a source term missing.
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