The El Niño–Southern Oscillation (ENSO) impacts rainfall and temperature in the tropics and extratropics via changes in the Walker and Hadley circulations. In this talk I will present an overview of ENSO teleconnections around the globe. I will show the areas that generally experience dry and wet weather during El Niño and La Niña events and will discuss the effect of ENSO diversity on the teleconnections. I will show that ENSO teleconnections are non-linear and vary considerably depending on the warming location in the equatorial Pacific. I will also present how climate models represent ENSO and use the South American example to show its implications for rainfall teleconnections and droughts. A brief discussion of how ENSO is projected to change in a warming world will be presented.
Pic source: NOAA/Climate.gov