Multivariate Regression Analysis and Statistical Modeling for Summer Extreme Precipitation over the Yangtze River Basin, China

Table 1

The correlation coefficients and corresponding significant level between regional summer extreme precipitation index (95% percentile) and the initial impact factors selected in the present study.

Indices	ISM	AO	NAO	PNA	Winter snow	LHF	SST	SST	ENSO	AAO
Periods/month	August	Nov	June	July	DJF	DJF	March–May	June–August	March	May-June
𝑅	−0.28	−0.30	−0.29	0.26	−0.48	−0.41	0.38	0.44	0.34	0.41
𝑃	0.05	0.05	0.05	0.08	0.0008	0.006	0.01	0.002	0.02	0.006