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El Niño-Southern Oscillation (ENSO)

Map showing differences in sea surface salinity between two experiments
Posted inEditors' Highlights

Salinity from Space Improves El Niño Forecasts

by Kristopher B. Karnauskas 17 July 201916 December 2021

Assimilating satellite observations of ocean surface salinity significantly improves coupled model forecasts of El Niño.

Aerial photo of a flooded town
Posted inScience Updates

Understanding ENSO in a Changing Climate

by M. J. McPhaden, A. Santoso and W. Cai 23 May 201916 December 2021

Centre for Southern Hemisphere Oceans Research (CSHOR) ENSO Science Symposium; Hobart, Tasmania, Australia, 29–31 January 2019

Flatiron clouds
Posted inEditors' Vox

Global Impacts of ENSO Reach into the Stratosphere

by D. I. V. Domeisen, C. I. Garfinkel and A. H. Butler 19 February 201929 March 2022

El Niño events have significant global impacts on weather and climate, but these reach up into the stratosphere, beyond the troposphere where most of Earth’s weather takes place.

A view of bleached coral
Posted inResearch Spotlights

How Ningaloo Niño Supercharges the El Niño–Southern Oscillation

by E. Underwood 11 January 201916 March 2023

The warm current cools the tropical Pacific and strengthens trade winds.

Posted inEditors' Highlights

What American Samoan Corals Tell About El Niño’s History

by E. Thomas 26 November 201830 March 2023

Samoan corals record how patterns of warm/cool and more/less salty in the equatorial Pacific changed in space and time over the last 500 years.

Posted inEditors' Highlights

The Long Reach of El Niño’s Broom

by J. A. Thornton 4 April 201813 February 2023

Both the El Niño Southern Oscillation and natural variations in tropical Pacific weather conditions impact surface air quality in the Eastern United States.

Posted inEditors' Vox

Diversity of El Niño Variability Makes Prediction Challenging

by S.-W. Yeh 26 March 20188 March 2022

The atmospheric response to El Niño, both in the Pacific region and around the world, changes with each event and is uncertain in future under the influence greenhouse gas forcing.

Global temperature map for 2017
Posted inNews

Global Average Temperatures in 2017 Continued Upward Trend

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 19 January 201810 April 2023

Even when the warming from El Niño is removed, 2017 ranks among the hottest years on record.

Posted inEditors' Vox

Learning from an Extreme El Niño

by A. Santoso 10 January 201814 January 2022

A recent paper in Reviews of Geophysics describes new scientific insights on the El Niño-Southern Oscillation from analysis of the 2015-2016 extreme El Niño.

Posted inEditors' Highlights

Is Global Warming Suppressing Canonical El Niño?

by Kristopher B. Karnauskas 16 November 201714 February 2023

A study explores the relationship between diverse El Niño events and the background state of the tropical Pacific.

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Features from AGU Publications

Research Spotlights

Improving Eddy Tower Evapotranspiration Estimates

20 May 202620 May 2026
Editors' Highlights

Recycled Rocks Reveal Subduction Zone Dynamics Off Baja California

21 May 202621 May 2026
Editors' Vox

The Impact of Advocacy: American Geophysical Union’s Days of Action

14 May 202613 May 2026
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