El Nino

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El Nino

  1. 1. The Impact of El Nino on Global Hazards
  2. 2. What is El Nino? El Niño Southern Oscillation, or ENSO, is a climate pattern that occurs across the tropical Pacific Ocean on average every five years, but over a period which varies from three to seven years. It is characterised by the warming of the surface of the eastern Pacific Ocean and the dominance of low pressure in the atmosphere in that region.
  3. 3. Frequency of El Nino Events
  4. 4. Normal El Nino
  5. 5. Normal
  6. 6. El Nino
  7. 7. El Nino Sea Surface Temperature Normal Sea Surface Temperature
  8. 8. Global Impact of El Nino
  9. 9. Legend: Potential AreasLegend: Potential Areas UnderUnder Severe drought impactsSevere drought impacts Drought impacts with majorDrought impacts with major losseslosses Moderate drought impactsModerate drought impacts Near normal to above normalNear normal to above normal conditioncondition Way above normal conditionWay above normal condition Flood damageFlood damage Severe flood damageSevere flood damage Analysing the Impact of El Nino on Droughts in The Philippines
  10. 10. Impact of El Nino On California
  11. 11. Flooding in San Francisco During the winter of 1997- 98, wind-driven waves and abnormally high sea levels significantly contributed to hundreds of millions of dollars in flood and storm damage in the San Francisco Bay region. Recent analyses by U.S. Geological Survey (USGS) scientists of nearly 100 years of sea-level records collected near the Golden Gate Bridge found that these abnormally high sea levels were the direct result of that year's El Niño atmospheric phenomenon.
  12. 12. The Impact of El Nino on Global Hazards

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