Fig. 1
From: Impact of stratospheric ozone on the subseasonal prediction in the southern hemisphere spring
a Time pressure distribution of lagged correlation coefficient between detrended September total column ozone anomaly and 14-day running averaged PCI of ERA5 during the period of 1991–2020. Statistically significant values are hatched at the 95% confidence level. b Same as (a) but for the PCI at 700 hPa. Open circles denote the values which are statistically significant at the 95% confidence level. c, d Same as (a, b) but for PCI predicted by a linear regression model based on 10-hPa PCI on 1st September