Articles | Volume 18, issue 9
https://doi.org/10.5194/acp-18-6293-2018
https://doi.org/10.5194/acp-18-6293-2018
Research article
 | 
04 May 2018
Research article |  | 04 May 2018

Low levels of nitryl chloride at ground level: nocturnal nitrogen oxides in the Lower Fraser Valley of British Columbia

Hans D. Osthoff, Charles A. Odame-Ankrah, Youssef M. Taha, Travis W. Tokarek, Corinne L. Schiller, Donna Haga, Keith Jones, and Roxanne Vingarzan

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Cited articles

Ainslie, B. and Steyn, D. G.: Spatiotemporal Trends in Episodic Ozone Pollution in the Lower Fraser Valley, British Columbia, in Relation to Mesoscale Atmospheric Circulation Patterns and Emissions, J. Appl. Met. Climatol., 46, 1631–1644, https://doi.org/10.1175/JAM2547.1, 2007. 
Ainslie, B., Steyn, D. G., Reuten, C., and Jackson, P. L.: A Retrospective Analysis of Ozone Formation in the Lower Fraser Valley, British Columbia, Canada. Part II: Influence of Emissions Reductions on Ozone Formation, Atmos.-Ocean, 51, 170–186, https://doi.org/10.1080/07055900.2013.782264, 2013. 
Aldener, M., Brown, S. S., Stark, H., Williams, E. J., Lerner, B. M., Kuster, W. C., Goldan, P. D., Quinn, P. K., Bates, T. S., Fehsenfeld, F. C., and Ravishankara, A. R.: Reactivity and loss mechanisms of NO3 and N2O5 in a polluted marine environment: Results from in situ measurements during New England Air Quality Study 2002, J. Geophys. Res., 111, D23S73, https://doi.org/10.1029/2006JD007252, 2006. 
Alfarra, M. R., Coe, H., Allan, J. D., Bower, K. N., Boudries, H., Canagaratna, M. R., Jimenez, J. L., Jayne, J. T., Garforth, A. A., Li, S.-M., and Worsnop, D. R.: Characterization of urban and rural organic particulate in the Lower Fraser Valley using two Aerodyne Aerosol Mass Spectrometers, Atmos. Environ., 38, 5745–5758, https://doi.org/10.1016/j.atmosenv.2004.01.054, 2004. 
Alicke, B., Geyer, A., Hofzumahaus, A., Holland, F., Konrad, S., Patz, H. W., Schafer, J., Stutz, J., Volz-Thomas, A., and Platt, U.: OH formation by HONO photolysis during the BERLIOZ experiment, J. Geophys. Res., 108, 8247, https://doi.org/10.1029/2001JD000579, 2003. 
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Short summary
The nocturnal nitrogen oxides dinitrogen pentoxide (N2O5) and its heterogeneous uptake product nitryl chloride (ClNO2) can have profound impacts on air quality, yet their abundances and chemistry are only sparsely constrained by field measurements. Here, we present the first measurements of N2O5 and ClNO2 in the Lower Fraser Valley of British Columbia, Canada. Concentrations were lower than have been observed elsewhere. Morning peaks indicate higher ClNO2 production above the measurement site.
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