Meet El Niño's cranky uncle that could send global warming into hyperdrive
Submitted by astone on Fri, 02/17/2017 - 12:56
by Ben Henley, Andrew King, David Karoly, Mandy Freund, Chris Folland, Jaci Brown
You’ve probably heard about El Niño, the climate system that brings dry and often hotter weather to Australia over summer.
You might also know that climate change is likely to intensify drought conditions, which is one of the reasons climate scientists keep talking about the desperate need to reduce greenhouse gas emissions, and the damaging consequences if we don’t.
El Niño is driven by changes in the Pacific Ocean, and shifts around with its opposite, La Niña, every 2-7 years, in a cycle known as the El Niño Southern Oscillation or ENSO.
But that’s only part of the story. There’s another important piece of nature’s puzzle in the Pacific Ocean that isn’t often discussed.
Since El Niño means “the boy” in Spanish, and La Niña “the girl”, we could call the warm phase of the IPO “El Tío” (the uncle) and the negative phase “La Tía” (the auntie).
These erratic relatives are hard to predict. El Tío and La Tía phases have been compared to a stumbling drunk. And honestly, can anyone predict what a drunk uncle will say at a family gathering?