Articles | Volume 18, issue 20
Atmos. Chem. Phys., 18, 15047–15067, 2018
https://doi.org/10.5194/acp-18-15047-2018
Atmos. Chem. Phys., 18, 15047–15067, 2018
https://doi.org/10.5194/acp-18-15047-2018

Research article 19 Oct 2018

Research article | 19 Oct 2018

Linking uncertainty in simulated Arctic ozone loss to uncertainties in modelled tropical stratospheric water vapour

Laura Thölix et al.

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Short summary
We analyse the impact of water vapour (WV) on Arctic ozone loss and find the strongest impact during intermediately cold stratospheric winters when chlorine activation increases with increasing PSCs and WV. In colder winters the impact is limited because chlorine activation becomes complete at relatively low WV values, so further addition of WV does not affect ozone loss. Our results imply that improved simulations of WV are needed for more reliable projections of ozone layer recovery.
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