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ENSO

The Sun looms large in a red sky over the trees of the Amazon rainforest.
Posted inResearch Spotlights

Drought Drove the Amazon’s 2023 Switch to a Carbon Source

by Madeline Reinsel 25 February 202625 February 2026

The change was caused by thirsty vegetation taking up less carbon than normal, not by the year’s extended fire season, new research shows.

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.

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.

Features from AGU Publications

Research Spotlights

How Internal Waves Transport Energy Thousands of Miles Across the Ocean

26 March 202626 March 2026
Editors' Highlights

Taming the Seismicity Tsunami with a Scalable Bayesian Framework

7 April 20266 April 2026
Editors' Vox

The Future of Earth’s Future

24 March 202624 March 2026
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