Main Goal and Objetives


To review the progress on the science of ENSO with a focus on examining the range of ENSO “flavors” (especially in regard to the longitudinal variations of warming), assess the existence of possible, and distinct precursors to the different flavors, an examine how the different oceanic and atmospheric processes that drive the different ENSO flavors and impact their predictability would vary in a warming world.


  • To review the role of different physical processes that influence ENSO characteristics and the diversity of El Niño events on decadal time scales.
  • To synthesize the existing ENSO evaluation methods in GCMs.
  • To review ENSO evaluation protocols and strategies for coordinated ENSO analysis of CMIP models.
  • To update on the status of ENSO specific simulations for consideration by CMIP6 (“ENSOMIP”).
  • To discuss new observations needed to better constrain ENSO processes, both for the current climate and for past climates (via paleo proxies and TPOS).
  • To update on the understanding of how ENSO might change in the future.
  • To update our understanding of global ENSO teleconnection patterns and related impacts.
  • To review the global and regional challenges of ENSO prediction and climate information services