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.

IndicesISMAONAOPNAWinter snowLHFSSTSSTENSOAAO

Periods/monthAugustNovJuneJulyDJFDJFMarch–MayJune–AugustMarch May-June

−0.28−0.30−0.290.26−0.48−0.410.380.440.340.41
0.050.050.050.080.00080.0060.010.0020.020.006