Articles | Volume 22, issue 24
https://doi.org/10.5194/acp-22-15747-2022
https://doi.org/10.5194/acp-22-15747-2022
Research article
 | 
15 Dec 2022
Research article |  | 15 Dec 2022

Fundamental oxidation processes in the remote marine atmosphere investigated using the NO–NO2–O3 photostationary state

Simone T. Andersen, Beth S. Nelson, Katie A. Read, Shalini Punjabi, Luis Neves, Matthew J. Rowlinson, James Hopkins, Tomás Sherwen, Lisa K. Whalley, James D. Lee, and Lucy J. Carpenter

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Cited articles

Andersen, S. T., Carpenter, L. J., Nelson, B. S., Neves, L., Read, K. A., Reed, C., Ward, M., Rowlinson, M. J., and Lee, J. D.: Long-term NOx measurements in the remote marine tropical troposphere, Atmos. Meas. Tech., 14, 3071–3085, https://doi.org/10.5194/amt-14-3071-2021, 2021. 
Andersen, S. T., Read, K. A., and Punjabi, S.: CVAO measurements, EBAS [data set], https://ebas-data.nilu.no/DataSets.aspx?stations=CV0001G&nations=CV238CPV&components=2-methylbutane,2-methylpropane,benzene,bromochloromethane,bromodichloromethane,bromoform,carbon_monoxide,dibromochloromethane,dibromomethane,dichloromethane,diiodomethane,dimethylsulfide,ethanal,ethane,ethene,ethyne,isoprene,methanol,methyl_iodide,n-butane,n-hexane,n-pentane,nitrogen_dioxide,nitrogen_monoxide,ozone,propane,propanone,propene,sulphur_dioxide,toluene,trichloromethane&matrices=air&fromDate=1970-01-01&toDate=2022-12-31, last access: 31 August 2022. 
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.: Atmos. Chem. Phys., 4, 1461, 2004; IUPAC Task Group on Atmospheric Chemical Kinetic Data Evaluation, http://iupac.pole-ether.fr (last access: 31 August 2022), 2004. 
Atkinson, R., Baulch, D. L., Cox, R. A., Crowley, J. N., Hampson, R. F., Hynes, R. G., Jenkin, M. E., Rossi, M. J., Troe, J., and IUPAC Subcommittee: Evaluated kinetic and photochemical data for atmospheric chemistry: Volume II – gas phase reactions of organic species, Atmos. Chem. Phys., 6, 3625–4055, https://doi.org/10.5194/acp-6-3625-2006, 2006. 
Ayers, G. P. and Galbally, I. E.: A preliminary investigation of a boundary layer-free troposphere entrainment velocity at Cape Grim, Baseline, 92, 10–15, https://doi.org/10.4225/08/5862ad7e847b2, 1995. 
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Short summary
The cycling of NO and NO2 is important to understand to be able to predict O3 concentrations in the atmosphere. We have used long-term measurements from the Cape Verde Atmospheric Observatory together with model outputs to investigate the cycling of nitrogen oxide (NO) and nitrogen dioxide (NO2) in very clean marine air. This study shows that we understand the processes occurring in very clean air, but with small amounts of pollution in the air, known chemistry cannot explain what is observed.
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