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Objectives
learn how El Niño and La Niña work
emphasize that the ocean & atmosphere are strongly coupled
understand that one component of the Earth’s system can have drastic effects on the rest of the Earth
El Niño: The Enigma
Unusual oceanic and atmospheric phenomenon - an anomaly
–We don’t know everything about it
–We can’t really predict it yet
El Niño: The Term
First discovered in 1795
Recognized by local fisherman along Ecuador and Peru
–Warm, surface countercurrent
–North-->South
–Discovered around Christmas-time –“The Christ Child”
El Niño Characteristics
Normally develops in W. tropical Pacific
Often results in natural disasters Occurs every 2 to 10 years
Most recent and severe events in 1953, ‘57-’58, ‘65, ‘72-’73, ‘76-’77, ‘82-’83, ‘91-’92, ‘97-’98, ‘02-’04, ‘06-’07, ’09’10
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