Table 2. Correlation matrix between the environmental variables of Southern Oscillation Index (SOI), sea surface temperature (SST), sea level (SL), wind shear, and chlorophyll a concentration from 2007 to 2011 both monthly and annually.
| SOImth | SOIyr | SSTmth | SSTyr | SLmth | SLyr | Wind shearmth | Wind shearyr | |
|---|---|---|---|---|---|---|---|---|
| SST | -0.05 | 0.50 | - | - | - | - | - | - |
| SL | 0.18 | 0.03 | 0.81 | 0.86 | - | - | - | - |
| Wind shear | 0.20 | 0.36 | 0.36 | -0.87 | -0.06 | 0.78 | - | - |
| Chlorophyll a | 0.10 | 0.98 | -0.67 | -0.24 | -0.25 | 0.22 | -0.63 | -0.43 |