Fig. 7From: Enhanced impacts of the North Pacific Victoria mode on the Indian summer monsoon onset in recent decadesThe correlation coefficient between the VM index and the SST anomalies in May during a 1965–1992 and b 1993–2020. The gray and black dots highlight correlation cofficents that significant at the 90% and 95% confidence levels, respectively. c is the 17-year running variance of the VM index in May. d is a scatter of the 17-year running variance of VM index (c) and the 17-year running correlation between VM and ISM onset (Fig. 1b)Back to article page