Articles | Volume 20, issue 18
Atmos. Chem. Phys., 20, 10831–10844, 2020
Atmos. Chem. Phys., 20, 10831–10844, 2020

Research article 15 Sep 2020

Research article | 15 Sep 2020

What have we missed when studying the impact of aerosols on surface ozone via changing photolysis rates?

Jinhui Gao et al.

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Subject: Gases | Research Activity: Atmospheric Modelling | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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Cited articles

Anger, A., Dessens, O., Xi, F. M., Barker, T., and Wu, R.: China's air pollution reduction efforts may result in an increase in surface ozone levels in highly polluted areas, Ambio, 45, 254–265,, 2016. 
Bian, H., Han, S. Q., Tie, X. X., Sun, M. L., and Liu, A. X.: Evidence of impact of aerosols on surface ozone concentration in Tianjin, China, Atmos. Environ., 41, 4672–4681,, 2007. 
Bohn, B., Kraus, A., Muller, M., and Hofzumahaus, A.: Measurement of atmospheric O3→O(1D) photolysis frequencies using filterradiometry, J. Geophys. Res.-Atmos., 109, D10S90,, 2004. 
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Castro, T., Madronich, S., Rivale, S., Muhlia, A., and Mar, B.: The influence of aerosols on photochemical smog in Mexico City, Atmos. Environ., 35, 1765–1772,, 2001. 
Short summary
Light extinction of aerosols can decease surface ozone mainly via reducing photochemical production of ozone. However, it also leads to high levels of ozone aloft being entrained down to the surface which partly counteracts the reduction in surface ozone. The impact of aerosols is more sensitive to local ozone, which suggests that while controlling the levels of aerosols, controlling the local ozone precursors is an effective way to suppress the increase of ozone over China at present.
Final-revised paper