Most of you know that El Nino and La Nina, collectively called the El Nino Southern Oscillation or ENSO, are arguably the biggest drivers of climate variability in the Southeast. So climate scientists are very interested in how ENSO might change as the climate gets warmer. Here is a recent blog post from Climate.gov that discusses how ENSO has changed over time and how it might change in the future. It also discusses how much we can really say about it, given the limitations of climate models.