The result shows correlations of PC1 to Nino3.4 index of each season on previous months (lead time) and following months (lag time),it was founf that from Table 1, lag is the highest correlation about - which meas Nio 3 SST index leads the rainfall anomalies by 3 months.
From these analyses, they show that the forcing of SST anomalous in the Pacific
Ocean affects rainfall variability over the Indhina.
The ENSO does not play a greater role
on rainfall variability over Thailand.