State of the Planet

News from the Columbia Climate School

What Does El Niño Mean, in 3.4 Seconds

This year’s strong El Niño event—the warming of east Pacific waters that drives rainfall and drought around the globe—already has had a big impact, and it’s likely to continue for awhile, though some effects may have peaked. Still ongoing: a wet winter in the southern U.S., the mid-Atlantic coast and California.

Scientists at the International Research Institute for Climate and Society took a moment from their work (a very brief moment) to answer the question, “What does El Niño mean?” The sum of their comments, with a dose of humor, paints an interesting picture of the climate phenomenon.

You can learn more about El Niño at the institute’s El Niño Essentials and El Niño Impacts web pages.

And to watch researcher Tony Barnston deliver the December forecast, link up here.

Photo of the Earth from space with the text "Lamont at AGU25" on top.

AGU25, the premier Earth and space science conference, takes place December 15-19, 2025 in New Orleans, Louisiana. This year’s theme—Where Science Connects Us—puts in focus how science depends on connection, from the lab to the field to the ballot box. Once again, Lamont-Doherty Earth Observatory and Columbia Climate School scientists, experts, students, and educators are playing an active role, sharing our research and helping shape the future of our planet. #AGU25 Learn More

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