Articles | Volume 16, issue 8
Atmos. Chem. Phys., 16, 4867–4883, 2016
https://doi.org/10.5194/acp-16-4867-2016
Atmos. Chem. Phys., 16, 4867–4883, 2016
https://doi.org/10.5194/acp-16-4867-2016

Research article 20 Apr 2016

Research article | 20 Apr 2016

Chemical and meteorological influences on the lifetime of NO3 at a semi-rural mountain site during PARADE

N. Sobanski et al.

Data sets

IUPAC: Task Group on Atmospheric Chemical Kinetic Data Evaluation Ammann, M., Cox, R. A., Crowley, J. N., Jenkin, M. E., Mellouki, A., Rossi, M. J., Troe, J., and Wallington, T. J. http://iupac.pole-ether.fr/index.html

HYSPLIT - Hybrid Single Particle Lagrangian Integrated Trajectory Model Draxler, R. R. and Rolph, G. D. http://ready.arl.noaa.gov/HYSPLIT.php

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Short summary
The nitrate radical (NO3) is an important nocturnal oxidant. By measuring NO3, its precursors (nitrogen dioxide and ozone) and several trace gases with which it reacts, we examined the chemical and meteorological factors influencing the lifetime of NO3 at a semi-rural mountain site. Unexpectedly long lifetimes, approaching 1 h, were observed on several nights and were associated with a low-lying residual layer. We discuss the role of other reactions that convert NO2 to NO3.
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