Articles | Volume 18, issue 19
Atmos. Chem. Phys., 18, 14005–14015, 2018
https://doi.org/10.5194/acp-18-14005-2018
Atmos. Chem. Phys., 18, 14005–14015, 2018
https://doi.org/10.5194/acp-18-14005-2018

Research article 02 Oct 2018

Research article | 02 Oct 2018

Reactive quenching of electronically excited NO2 and NO3 by H2O as potential sources of atmospheric HOx radicals

Terry J. Dillon and John N. Crowley

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Cited articles

Amedro, D., Parker, A. E., Schoemaecker, C., and Fittschen, C.: Direct observation of OH radicals after 565 nm multi-photon excitation of NO2 in the presence of H2O, Chem. Phys. Lett., 513, 12–16, 2011. 
Atkinson, R., Baulch, D. L., Cox, R. A., Crowley, J. N., Hampson, R. F., Hynes, R. G., Jenkin, M. E., Rossi, M. J., and Troe, J.: Evaluated kinetic and photochemical data for atmospheric chemistry: Volume I – gas phase reactions of Ox, HOx, NOx and SOx species, Atmos. Chem. Phys., 4, 1461–1738, https://doi.org/10.5194/acp-4-1461-2004, 2004. 
Brown, S. S., Talukdar, R. K., and Ravishankara, A. R.: Reconsideration of the rate constant for the reaction of hydroxyl radicals with nitric acid, J. Phys. Chem., 103, 3031–3037, 1999. 
Cantrell, C. A., Zimmer, A., and Tyndall, G. S.: Absorption cross sections for water vapor from 183 to 193 nm, Geophys. Res. Lett., 24, 2195–2198, 1997. 
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Short summary
The reactions between electronically excited NO2* and NO3* with water vapour were studied using laser excitation of NO2 (532–647 nm) or NO3 (623–662 nm). No evidence for OH production was observed in either reaction. The reaction of NO2* with water is not a significant source of OH in the atmosphere.
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