El Niño, La Niña and neutral conditions seen different ways

• Equatorial sea level & upper ocean temperatures - seen in 3-D Latitude-Longitude-depth plots
• Equatorial surface temperatues - seen in Latitude-Longitude plots
• Pacific Ocean temperature anomalies (deviations) - seen in Latitude-Longitude plots
• Schematic diagrams explain the warm pool and the thermocline during El Niño, La Niña and neutral conditions

Historical El Niños and La Niñas

• El Niños and La Niñas from 1980 to present - seen in longitude-time plots of equatorial sea surface temperature and anomalies
• The NINO3.4 ENSO Index from 1950 to present 
• YouTube videos: 
  • Evolution of the 2009-2010 El Niño, the strongest "Central Pacific" El Niño in the past 3 decades, with maximum warming in the central equatorial Pacific (vs the classic El Niño, like 1997-1998, with maximum warming in the eastern tropical Pacific).
  • The 2014 El Niño that wasn't
  • Explaining the 2014-2015 El Niño

Realtime conditions 'At a Glance'

• State of the equatorial Pacific Ocean at one glance in time-longitude plots of East-West wind, sea surface temperature, and thermocline depth
• Upper ocean heat content and ENSO

Understanding El Niño predictions

• Plume of Model Predictions - current ENSO forecasts from the IRI
• YouTube video - El Niño is predictable -- also see the Upper Ocean Heat Content and Warm Water Volume (with realtime data graphics and downloads), as discussed in the video.