An Example

Leading EOF Mode

q  We apply EOF analysis to a 50-year long time series of Pacific SST variation from a model simulation. q  The leading EOF mode shows a ENSO SST pattern. The EOF analysis tells us that ENSO is the largest process that produce SST variations in this 50-year long model simulation. q The principal component tells us which year has a El Nino or La Nina, and how strong they are.

Principal Component