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ENSO

A bright yellow sun in an orange sky over hazy mountains.
Posted inNews

The Past 3 Years Have Been the Three Hottest on Record

by Grace van Deelen 14 January 202614 January 2026

Extreme heat in 2023, 2024, and 2025 indicates a warming spike, a new analysis finds.

A new analysis of atmospheric patterns over Hawaii could improve forecasts of rainfall anomalies.
Posted inNews

Globe-Trotting Weather Pattern Influences Rainfall in Hawaii

by Kari Goodbar 18 December 202518 December 2025

Isolated islands that depend on rainfall could benefit from improved forecasting of near-future events, and understanding the Madden-Julian Oscillation could hold an important key.

A man crouches on the deck of a ship. He is wearing latex gloves and collecting a water sample from a tank.
Posted inNews

Panama’s Coastal Waters Missed Their Annual Cooldown This Year

by Katherine Bourzac 15 October 202515 October 2025

The unprecedented failure of tropical upwelling will likely affect the country’s fisheries. Scientists aren’t certain whether it will happen again next year.

A shallow green-blue river with large brown-gray rocks.
Posted inResearch Spotlights

Droughts Sync Up as the Climate Changes

by Rebecca Owen 18 September 202518 September 2025

A new study reconstructs roughly 800 years of streamflow history in India’s major rivers, showing an increase in synchronous drought linked to anthropogenic climate change.

Bees congregate on a tropical tulip ginger flower.
Posted inNews

El Niño May Be Driving Insect Decline in the Tropics

by Roberto González 15 September 202515 September 2025

Stronger and more frequent El Niño events are contributing to a decline in arthropod diversity and population, as well as to a reduction in the ecological services the animals provide.

A map and graph from the study.
Posted inEditors' Highlights

Tree Rings Record History of Jet Stream-Related Climate Extremes

by Susan Trumbore 20 August 202520 August 2025

Persistent spatial patterns of summer weather extremes in the northern hemisphere recorded in tree ring growth records provide a thousand-year history of jet stream ‘wave5’ dynamics.

4 maps from the study.
Posted inEditors' Highlights

Decadal Forecasts with a SMYLE

by Kristopher B. Karnauskas 13 August 202511 August 2025

Scientists use a large suite of simulations with an established climate model to predict the Pacific Decadal Oscillation up to one year in advance, but El Niño can still get in the way.

Map of the ENSO in the pacific ocean with 2 equations overlain.
Posted inEditors' Vox

Two Equations that Unlock El Niño

by Jérôme Vialard 5 June 20254 June 2025

Despite the El Niño–Southern Oscillation’s global reach and complex ocean–atmosphere interactions across timescales, two simple, elegant equations capture its key dynamics and defining properties.

A satellite image shows a hurricane in the Caribbean Sea.
Posted inNews

Busy Hurricane Season Expected in 2025

by Grace van Deelen 22 May 202522 May 2025

A new NOAA report predicts an active Atlantic hurricane season, though global weather patterns could still shift predictions.

A colorized image of a virus as seen under a microscope, with purple and green in the background and long orange lines dotted with yellow specks.
Posted inResearch Spotlights

The Interplay of ENSO and Immunity in Infectious Disease Outbreaks

Sarah Derouin, Science Writer by Sarah Derouin 7 March 20257 March 2025

El Niño and La Niña events can affect the spread of infectious diseases including cholera and dengue fever. The effects of some diseases may persist over several years.

Posts pagination

1 2 3 … 9 Older posts
Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

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Research Spotlights

New Method Could Improve U.S. Forecasting of West Nile Virus

20 February 202620 February 2026
Editors' Highlights

Why More Rain Doesn’t Mean More Erosion in Mountains

20 February 202620 February 2026
Editors' Vox

A Double-Edged Sword: The Global Oxychlorine Cycle on Mars

10 February 202610 February 2026
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