Articles | Volume 19, issue 6
https://doi.org/10.5194/acp-19-3589-2019
https://doi.org/10.5194/acp-19-3589-2019
Research article
 | 
21 Mar 2019
Research article |  | 21 Mar 2019

Characterising the seasonal and geographical variability in tropospheric ozone, stratospheric influence and recent changes

Ryan S. Williams, Michaela I. Hegglin, Brian J. Kerridge, Patrick Jöckel, Barry G. Latter, and David A. Plummer

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Latest update: 14 Dec 2024
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Short summary
Tropospheric ozone has important implications for air quality and climate change but is poorly understood at a regional and seasonal level. Analysis of model simulations indicates that downward transport of ozone from the stratosphere has a larger influence than previously thought (as much as ~50 % even near the surface). Recent estimated changes in tropospheric ozone (1980–89 to 2001–10) are generally positive, with substantial attribution from the stratosphere identified over some regions.
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