EGU22-12426, updated on 28 Mar 2022
https://doi.org/10.5194/egusphere-egu22-12426
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Role of Stratosphere-Troposphere Exchange of Ozone in the Earth System

James Keeble1,2 and Paul Griffiths1,2
James Keeble and Paul Griffiths
  • 1University of Cambridge, Department of Chemistry, Cambridge, United Kingdom
  • 2National Centre for Atmospheric Science, Department of Chemistry, Cambridge, United Kingdom

The transport of ozone from the stratosphere to the troposphere is a key contributor to the tropospheric ozone budget. It is estimated that the stratosphere-to-troposphere flux of ozone leads to ~500 Tg of ozone transported into the troposphere each year, which is comparable to the net chemical production of ozone within the troposphere. Using simulations performed with the UKESM1 Earth system model we explore how transport of ozone from the stratosphere to the troposphere has changed over the recent past, and explore the drivers of these changes. Additionally, we calculate the contribution of ozone with a stratospheric origin to tropospheric ozone radiative forcing, and explore the impacts of STE on regional air quality.

How to cite: Keeble, J. and Griffiths, P.: Role of Stratosphere-Troposphere Exchange of Ozone in the Earth System, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-12426, https://doi.org/10.5194/egusphere-egu22-12426, 2022.