Spring persistence, transition and resurgence of El Nino

What is it about?

An objective method is presented to explore the differences in the space-time evolution of equatorial Pacific SST anomalies observed during El Nino events. This inter-El Nino variability is captured by two leading orthogonal modes, which explain more than 60% of the interevent variance. The first mode illustrates the extent to which warm SST anomalies in the eastern tropical Pacific persist into the boreal spring after the peak of El Nino. The second mode captures the transition and resurgence of El Nino in the following year

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