1 / 15

Understanding El Niño and the Southern Oscillation (ENSO)

Explore the short-term climate variability of El Niño and the Southern Oscillation (ENSO) through monthly SLP anomalies, correlation data, rainfall percentiles, and SST anomalies in the equatorial Pacific Ocean. Dive into the phases of the El Niño cycle and how it is coupled with the Southern Oscillation Index (SOI). Understand the role of easterly trade winds, the Walker circulation, and the atmosphere-ocean feedback in this complex climate phenomenon. Stay up to date with the current anomalies, including the developing La Niña.

paulafuller
Download Presentation

Understanding El Niño and the Southern Oscillation (ENSO)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Atmosphere:Part 9: Short term climate variability.El Niño and the Southern Oscillation(ENSO) Suggested further reading:http://www.elnino.noaa.gov

  2. Monthly SLP anomalies at Tahiti and Darwin (normalized by s.d.) Correlation between annual mean SLP at Darwin and elsewhere

  3. Southern Oscillation Index

  4. Rainfall (percentiles) at various tropical and subtropical locations (black bars = significant negative SOI)

  5. “Normal” SST in the Pacific (Dec)

  6. Phases of the El Niño cycle “La Niña” (cold event) “normal” “El Niño” (warm event)

  7. SST anomalies in equatorial Pacific Ocean

  8. The SO and El Niño are coupled E Eq Pac SST SOI

  9. “Normal” SST in the Pacific (Dec)

  10. Easterly trade winds produce Ekman drift away from equator — induces upwelling of cold water — equatorial cold tongue

  11. The Walker circulation Atmosphere-ocean feedback

  12. Recent evolution — developing La Niña

  13. Current anomalies

More Related