El Nino:What’s It All About? El Nino: What’s It All About?
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Transcript of El Nino:What’s It All About? El Nino: What’s It All About?
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El Nino:El Nino: What’s It All About?What’s It All About?
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What is El Nino?What is El Nino?• warming of sea surface
waters in the central and eastern Pacific Ocean.
• “warm phase”, occurs every 3-7 years
• the shift in temperatures dramatically affects global weather
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Occurs during Christmas season ...Occurs during Christmas season ...• First noticed by Peruvian Fishermen
• “Christ Child”
• “The Boy”
• “The Little One”
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Common Effects of El Nino?Common Effects of El Nino?• US southwest wetter• US northwest mild
winters• Atlantic hurricanes
milder and less frequent
• African droughts or floods
• European droughts and floods
• East asian floods
Vietnam Has Been Hit by Flood and
Drought in 2002.
U.S. had worst fire year in last 50; this
photo from Angeles National Forest
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What is La Nina?What is La Nina?• cooling of sea surface
waters in the eastern Pacific Ocean
• “cold phase”, occurs every 3-7 years
• La NiñaLa Niña• ““The GirlThe Girl””
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More El Nino More El Nino ImagesImages
Normal
Autumn El Nino
SpringEl Nino
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National El Nino Impact
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Measuring El NinoMeasuring El NinoWeather Station: ColoradoWeather Station: Colorado
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Measuring El NinoMeasuring El NinoBuoysBuoys
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Tropical Atmosphere Ocean (TAO) Array of ATLAS moored buoys
The World’s Largest Scientific Instrument!
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Measuring El NinoMeasuring El NinoSatellitesSatellites
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Measuring El NinoMeasuring El NinoSea Surface Temperatures
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Measuring El Nino:Measuring El Nino:Coral Bleaching
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El Nino and CaliforniaEl Nino and California• Increased chance of heavy winter rains• Severe flooding and landslides
(1934, La Canada floods kill more than 40 people; 1978 killer landslides in local mountains)
• Bigger surf from larger Pacific Storms
• Increased summer droughts
A rescuer helps a woman out of her Orange County house, 1998
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