Articles | Volume 23, issue 19
https://doi.org/10.5194/acp-23-12731-2023
https://doi.org/10.5194/acp-23-12731-2023
Research article
 | 
11 Oct 2023
Research article |  | 11 Oct 2023

Total ozone variability and trends over the South Pole during the wintertime

Vitali Fioletov, Xiaoyi Zhao, Ihab Abboud, Michael Brohart, Akira Ogyu, Reno Sit, Sum Chi Lee, Irina Petropavlovskikh, Koji Miyagawa, Bryan J. Johnson, Patrick Cullis, John Booth, Glen McConville, and C. Thomas McElroy

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Cited articles

Allen, D. R., Bevilacqua, R. M., Nedoluha, G. E., Randall, C. E., and Manney, G. L.: Unusual stratospheric transport and mixing during the 2002 Antarctic winter, Geophys. Res. Lett., 30, 1599, https://doi.org/10.1029/2003gl017117, 2003. 
Basher, R. E.: Review of the Dobson spectrophotometer and its accuracy, WMO Global Ozone Res. Monit. Proj. Rep. 13, World Meteorol. Organ., Geneva, Switzerland, https://library.wmo.int/records/item/50151-review-of-the-dobson-spectrophotometer-and-its-accuracy (last access: 4 October 2023), 1982. 
Bass, A. M. and Paur, R. J.: The ultraviolet cross-sections of ozone: I. The measurements, in Atmospheric Ozone, Springer, Germany, 606–610, https://doi.org/10.1007/978-94-009-5313-0_120, 1985. 
Bernhard, G., Evans, R. D., Labow, G. J., and Oltmans, S. J.: Bias in Dobson total ozone measurements at high latitudes due to approximations in calculations of ozone absorption coefficients and air mass, J. Geophys. Res., 110, D10305, https://doi.org/10.1029/2004JD005559, 2005. 
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Stratospheric ozone within the Southern Hemisphere springtime polar vortex has been a subject of intense research since the discovery of the Antarctic ozone hole. The wintertime ozone in the vortex is less studied. We show that the recent wintertime ozone values over the South Pole were about 12 % below the pre-1980s level; i.e., the decline there was nearly twice as large as that over southern midlatitudes. Thus, wintertime ozone there can be used as an indicator of the ozone layer state.
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