El Niño Southern Oscillations ocean-atmosphere event.
El Niño and La Niña are used as general names for large fluctuations in the temperature of the surface waters of the Eastern Pacific Ocean and the atmospheric phenomena caused by them. 
The names mean "boy" or "brat" and "little girl" in Spanish. The “Child” symbolizes Jesus, as El Niño hits the west coast of South America at Christmas time.
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