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El Niño and La Niña

El Niño and La Niña. 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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El Niño and La Niña

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  1. El Niño and La Niña

  2. 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.

  3. Strange phenomenon occur during an El Niño and La Niña like...

  4. Brush fires caused by drought in Texas (La Niña)

  5. Increased Tropical Storms (La Niña)

  6. Hurricane Floyd was HUGE! (1999 - La Niña)

  7. Causing devastating floods in Australia (2010-2011 La Niña)

  8. Peruvian anchovy populations declined (El Niño)

  9. Surface Ocean Currents • Currents that are controlled by the wind. ~¼ mile depth, 10%

  10. Normal Condition Equatorial winds gather warm water pool toward the west. Cold water upwells along the coast of Peru.

  11. Strong upwelling

  12. El Nino Surface current reversed, pushing warm water toward the coast of Peru. The absence of cold upwelling increases warming.

  13. La Nina Warm water is farther west than usual, causing a strong upwelling of cold water in the Eastern Pacific

  14. NOAA drifting buoys Measures... • temperature • currents • winds

  15. Satellites Instruments on satellites measure wind, waves, temperature of the sea surface, ocean color, ocean surface currents, and tides.

  16. Where they monitor…

  17. 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 

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