Interdecadal Variation of Spring Extreme High-Temperature Events in the Western Tianshan Mountains and Its Relationship with the Tropical SST

Table 1

The correlation coefficient between the ocean index and EHEs index.

	AMO	NAO	Nino1 + 2	Nino3.4	Nino3	Nino4	PDO
r	0.33	0.003	−0.11	−0.31	−0.24	−0.21	−0.32
rrun	0.93	−0.78	−0.49	−0.58	−0.52	−0.18	−0.87

The asterisks denote the correlation coefficient significant at the 95% confidence level based on Student’s t-test.