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Definitions:
El Niño - Unusually warm surface water temperatures in the Pacific ocean caused by weak or reversed direction trade winds.
La Niña - Unusually cold surface water temperatures in the Pacific ocean caused by strong easterly trade winds.
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Strange phenomenon occur during an El Niño and
La Niña like...
Strange phenomenon occur during an El Niño and
La Niña like...
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Brush fires caused by drought in Texas (La Niña)
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Increased Tropical Storms (La Niña)
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Hurricane Floyd was HUGE! (1999 - La Niña)
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Causing devastating floods in Australia (2010-2011 La
Niña)
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Peruvian anchovy populations declined (El
Niño)
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Surface Ocean Currents
Currents that are controlled by the wind. ~¼ mile depth, 10%
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Normal Condition
Equatorial winds gather warm water pool toward the west. Cold water upwells along the coast of Peru.
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Strong upwelling
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El Nino
Surface current reversed, pushing warm water toward the coast of Peru.The absence of cold upwelling increases warming.
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La Nina
Warm water is farther west than usual, causing a strong upwelling of cold water in the Eastern Pacific
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NOAA drifting buoys
Measures...temperatur
ecurrentswinds
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Satellites
Instruments on satellites measure wind, waves, temperature of the sea surface, ocean color, ocean surface currents, and tides.
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Where they monitor…
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Videos
http://www.youtube.com/watch?v=SR5VPAqVQBw El Nino explanation video 3min
http://www.youtube.com/watch?v=jEAv-9TZktY La Nina
explanation video 3.5min http://www.youtube.com/watch?v=iWTucpsClLc Austin newscast in
January talking about Australia flooding 2min http://www.youtube.com/watch?v=l5x8dJ57xkk Texas weatherman
predictions for this year from July 2010. about 3min http://esminfo.prenhall.com/science/geoanimations/animations/
26_NinoNina.html All three animations