Fig. 1: Total column ozone (TCO) and ozone hole onset and breakup dates from TOMS/OMI observations.
From: Potential drivers of the recent large Antarctic ozone holes
a Zonal mean TCO in Dobson units (DU) across latitudes 60∘S to 90∘S shown for the months of Sept., Oct., and Nov. for years 1979–2022 (2002 and 2019 excluded). Error bars for OMI represent the standard deviation of the daily mean TCO measurements (2005–2022). The lines present a linear fit from 2001–2022, with the fit equation shown in the legend. The linear fit uncertainty is quoted at the 95% confidence interval and T = Years since 2001. b Deep ozone hole onset and breakup dates (130 DU, 1 million km2) for years 2005–2022. Missing years do not surpass the TCO/area threshold during the season. The lines present a linear fit from 2005–2022, with the fit equation shown in the legend. The linear fit uncertainty is quoted at the 95% confidence interval and T = Years since 2005.
