Articles | Volume 15, issue 6
https://doi.org/10.5194/amt-15-1983-2022
https://doi.org/10.5194/amt-15-1983-2022
Research article
 | 
31 Mar 2022
Research article |  | 31 Mar 2022

A relaxed eddy accumulation (REA) LOPAP system for flux measurements of nitrous acid (HONO)

Lisa von der Heyden, Walter Wißdorf, Ralf Kurtenbach, and Jörg Kleffmann

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Cited articles

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Amedro, D., Parker, A. E., Schoemaecker, C., and Fittschen, C.: Direct Observations of OH Radicals after 565 nm Multi-Photon Excitation of NO2 in the Presence of H2O, Chem. Phys. Lett., 513, 12–16, https://doi.org/10.1016/j.cplett.2011.07.062, 2011. 
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Arens, F., Gutzwiller, L., Gäggeler, H. W., and Ammann, M.: The Reaction of NO2 with Solid Anthrarobin (1,2,10-trihydroxy-anthracene), Phys. Chem. Chem. Phys., 4, 3684–3690, https://doi.org/10.1039/b201713j, 2002. 
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Short summary
A relaxed eddy accumulation (REA) system based on the LOPAP technique for the quantification of vertical fluxes of nitrous acid (HONO) was developed and tested in a field campaign. Typical diurnal variations of the HONO fluxes were observed with low, partly negative fluxes during night-time and higher positive fluxes around noon. The highest correlation of the HONO flux was observed with the product of the NO2 photolysis frequency and the NO2 concentration.
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