On the potential fingerprint of the Antarctic ozone hole in ice-core nitrate isotopes: a case study based on a South Pole ice core

Cao, Yanzhi; Jiang, Zhuang; Alexander, Becky; Cole-Dai, Jihong; Savarino, Joel; Erbland, Joseph; Geng, Lei

doi:https://doi.org/10.5194/acp-22-13407-2022

Articles | Volume 22, issue 20

https://doi.org/10.5194/acp-22-13407-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-22-13407-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 20

Research article

|

18 Oct 2022

Research article |

| 18 Oct 2022

On the potential fingerprint of the Antarctic ozone hole in ice-core nitrate isotopes: a case study based on a South Pole ice core

Yanzhi Cao, Zhuang Jiang, Becky Alexander, Jihong Cole-Dai, Joel Savarino, Joseph Erbland, and Lei Geng

Supplement

https://doi.org/10.5194/acp-22-13407-2022-supplement

Data sets

Earth System Research Laboratory Ozone Water Vapor Group Surface Ozone Measurements, Version 1 A. McClure-Begley, I. Petropavlovskikh, S. Oltmans, and NOAA ESRL https://doi.org/10.7289/V57P8WBF

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Short summary

We investigate the potential of ice-core preserved nitrate isotopes as proxies of stratospheric ozone variability by measuring nitrate isotopes in a shallow ice core from the South Pole. The large variability in the snow accumulation rate and its slight increase after the 1970s masked any signals caused by the ozone hole. Moreover, the nitrate oxygen isotope decrease may reflect changes in the atmospheric oxidation environment in the Southern Ocean.