The El Niño-Southern Oscillation (ENSO), the most prominent interannual climate variability signal, has been widely studied for its teleconnections with Antarctic sea ice variability. However, its ...

NOAA is to start using a new index, known as 'RONI,' to classify El Niño and La Niña events.

The El Niño Southern Oscillation (ENSO) is a natural pattern of ocean and atmospheric changes in the tropical Pacific Ocean that can influence the weather pattern ...

The tools scientists have relied on for decades to track El Niño and La Niña are breaking down, and the reason is ...

A major oceanic transition is underway as warming waters in the Pacific signal a transformative shift for global weather.

While La Niña is currently holding its own, the expectation is that an El Niño will develop by the peak of hurricane season. Here's why that's a big deal.

El Nino could develop later this year, increasing the risk of record-breaking global heat, according to forecasts from several major weather agencies.

The upper panel illustrates how ENSO influences the equatorial Atlantic and Indian Oceans, and how these two ocean basins in turn feed back to ENSO. On the right side of the panel, the schematic shows ...

Climate troublemakers El Niño and La Niña have been around for a long time. A really, really long time. A new study says the dance between El Niño and its counterpart, La Niña, was present on our ...

Two major weather agencies think it's increasingly likely that El Niño will form in the eastern tropical Pacific Ocean later ...

La Niña—a climate phenomenon characterized by unusually cool sea surface temperatures in the central and eastern tropical Pacific Ocean—can persist for multiple years, exerting significant climate ...