This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: 1 El Niño Monday (Today) • Historical Perspective Leading to our Current Understanding – El Niño – Southern Oscillation • Observing the Ocean’s Response to the 1997-1998 El Niño – Moored Buoys – Satellites Wednesday • Direct and Indirect Impacts of El Niño on Global Weather Patterns • Other types of natural climate oscillation Outline: History of the Term El Niño The original definition of El Niño goes back to 18th or 19th century when Peruvian sailors coined the term to describe a warm southward current that appeared annually near Christmas off the Peruvian coast. Hence the name El Niño, Spanish for "Christ Child". The warm, southward current occasionally seemed more intense than usual and eventually the term El Niño came to refer primarily to these extreme events 2 El Nino: The Roughly Periodic (3-7 years) Occurrence of Prolonged (ca. 8 months) Warming of Coastal Waters off of Peru and Ecuador Southern Oscillation In the 1920’s Sir Gilbert Walker Analyzed Atmospheric...
View Full Document
- Fall '07
- Tropical cyclone, La Niña, El Niño-Southern Oscillation, Southern Oscillation