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Journal Article

A probabilistic study of the return of stratospheric ozone to 1960 levels

Authors

Södergren,  A. H.
Potsdam Institute for Climate Impact Research and Cooperation Partners;

Bodeker,  G. E.
Potsdam Institute for Climate Impact Research and Cooperation Partners;

Kremser,  S.
Potsdam Institute for Climate Impact Research and Cooperation Partners;

Meinshausen,  M.
Potsdam Institute for Climate Impact Research and Cooperation Partners;

McDonald,  A. J.
Potsdam Institute for Climate Impact Research and Cooperation Partners;

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Citation

Södergren, A. H., Bodeker, G. E., Kremser, S., Meinshausen, M., McDonald, A. J. (2016): A probabilistic study of the return of stratospheric ozone to 1960 levels. - Geophysical Research Letters, 43, 17, 9289-9297.
https://doi.org/10.1002/2016GL069700


Cite as: https://publications.pik-potsdam.de/pubman/item/item_21526
Abstract
Anthropogenic emissions of greenhouse gases and ozone‐depleting substances are expected to continue to affect concentrations of ozone in the stratosphere through the 21st century. While a range of estimates for when stratospheric ozone is expected to return to unperturbed levels is available in the literature, quantification of the spread in results is sparse. Here we present the first probabilistic study of latitudinally resolved years of return of stratospheric ozone to 1960 levels. Results from our 180‐member ensemble, simulated with a newly developed simple climate model, suggest that the spread in return years of ozone is largest around 40°N/S and in the southern high latitudes and decreases with increasing greenhouse gas emissions. The spread in projections of ozone is larger for higher greenhouse gas scenarios and is larger in the polar regions than in the midlatitudes, while the spread in ozone radiative forcing is smallest in the polar regions.