DISCUSSION: Within the meteorological community, the diagnosis of El Niño and La Niña events is based upon long-term trends in sea-surface temperature (SST) anomalies across the Tropical Central and Eastern Pacific Ocean during quarterly running 3-month periods. This time lapse animation shows SST anomalies covering a period from April 2015 until mid-June 2016. El Niño development is clearly visible along the equator, peaking around mid-Nov 2015. The return to cooler SST temperatures in June foreshadows the La Niña event which is currently intensifying across the Tropical Central and Tropical Eastern Pacific Ocean.
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©2017 Meteorologist Jordan Rabinowitz