Fig. 2
From: Impact of stratospheric ozone on the subseasonal prediction in the southern hemisphere spring
Anomaly correlation coefficients (ACCs) of 14-day running averaged PCI as a function of forecast lead time in a COZ and b YOZ experiments for the period of 2004–2020. The values which are statistically significant at the 95% confidence level are dotted. c ACCs of 700-hPa PCI in COZ experiment in black and those in YOZ experiment in red. Open circles denote the values which are statistically significant at the 95% confidence level. The forecast time when the ACC difference (YOZ minus COZ) is statistically significant at the 95% confidence level is shaded in pink. Note that October 6 in x-axis refers to the ACC at the forecast week 6–7