Modelling the potential impacts of the recent, unexpected increase in CFC-11 emissions on total column ozone recovery

Keeble, James; Abraham, N. Luke; Archibald, Alexander T.; Chipperfield, Martyn P.; Dhomse, Sandip; Griffiths, Paul T.; Pyle, John A.

doi:https://doi.org/10.5194/acp-20-7153-2020

Articles | Volume 20, issue 12

https://doi.org/10.5194/acp-20-7153-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

StratoClim stratospheric and upper tropospheric processes...

https://doi.org/10.5194/acp-20-7153-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 12

Research article

| Highlight paper

|

19 Jun 2020

Research article | Highlight paper |

| 19 Jun 2020

Modelling the potential impacts of the recent, unexpected increase in CFC-11 emissions on total column ozone recovery

James Keeble, N. Luke Abraham, Alexander T. Archibald, Martyn P. Chipperfield, Sandip Dhomse, Paul T. Griffiths, and John A. Pyle

Data sets

GOME/SCIAMACHY/GOME2 Merged Total Ozone Uni Bremen https://www.iup.uni-bremen.de/gome/wfdoas/merged/wfdoas_merged.html

Total column ozone Bodeker Scientific http://www.bodekerscientific.com/data/total-column-ozone

Short summary

The Montreal Protocol was agreed in 1987 to limit and then stop the production of man-made CFCs, which destroy stratospheric ozone. As a result, the atmospheric abundances of CFCs are now declining in the atmosphere. However, the atmospheric abundance of CFC-11 is not declining as expected under complete compliance with the Montreal Protocol. Using the UM-UKCA chemistry–climate model, we explore the impact of future unregulated production of CFC-11 on ozone recovery.