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Earth science

View of a lake in the distance with mud cracks in reddish soil in the foreground.
Posted inResearch Spotlights

Surprise Hydrological Shifts Imperil Water Resources

Sarah Stanley, Science Writer by Sarah Stanley 15 September 202213 October 2022

Mounting evidence suggests the need for improved water planning strategies and revamped hydrological models.

Dry patches of ground line a river basin in the Amazon rain forest.
Posted inNews

The Amazon Rain Forest Can’t Keep Up with Droughts

by Danielle Beurteaux 14 September 202214 September 2022

Droughts in one region of the Amazon can lead to less moisture elsewhere, and trees may not adapt quickly enough to survive.

Aerial view of a large wetland area, with part of an airplane wing in the foreground
Posted inResearch Spotlights

Tropical Wetlands Emit More Methane Than Previously Thought

Rachel Fritts, Science Writer by Rachel Fritts 13 September 20225 October 2022

Climate models could be vastly underestimating methane emissions from the world’s tropical wetlands, according to observational surveys of wetlands in Zambia.

A snow-capped volcano appears against a bright blue sky and is reflected in lake water of the same bright blue. In the foreground are green shrubs and a boulder.
Posted inNews

Supervolcanoes Linger a While, Then Rush to Erupt

Damond Benningfield, Science Writer by Damond Benningfield 12 September 202212 September 2022

Geologists examined crystals in rock from four massive eruptions in the Chilean Andes.

A large wall of ice looms above a body of water, and a waterfall trickles down the ice near the center of the image.
Posted inNews

Alaskan Glaciers Advance and Retreat in Satellite Imagery

Katherine Kornei, Science Writer by Katherine Kornei 12 September 202212 September 2022

Researchers tracked 19 maritime glaciers in Kenai Fjords National Park over several decades and found that tidewater glaciers tended to experience less ice loss than other types of glaciers.

Posted inResearch Spotlights

New Map of Proposed Mantle-Driven Topography Stirs the Pot

by Rebecca Dzombak 8 September 20224 August 2023

The role the deep Earth plays in creating topography is hotly debated. A new study uses subtle elevation changes around the globe as evidence that the mantle plays a key role in building topography.

A glacier cascades down the side of a mountain along the left side of this photograph. In the foreground is a shallow glacial lake that transitions from clear to icy blue and has numerous pebbles and smooth rocks strewn along the bottom. The sky is bright blue but shielded by low hanging clouds.
Posted inResearch Spotlights

Models Oversimplify How Melting Glaciers Deform Land

by Saima May Sidik 7 September 202228 September 2022

When glaciers melt, the land below deforms. Sea level data show that widely used models oversimplify the process.

A tall jet of lightning extends upward from a bright thundercloud in front of a dark starry sky. The gigantic jet is bright white at the base and then transitions to blue and then to red as it reaches upward. The top of the jet is wider than the base.
Posted inNews

Gigantic Jet of Lightning Mapped over Oklahoma

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 7 September 20227 September 2022

The most powerful gigantic jet ever recorded fortuitously appeared over a sensor array in Oklahoma, enabling scientists to map the structure of the phenomenon for the first time.

Side-by-side images show fish-eye-style photographs of a starry evening sky illuminated by different subauroral events. The left image shows a SAR arc, a reddish arc that spans the sky. Beneath the arc the sky transitions from bright green at the horizon to purple and is partially obscured by clouds. The right image shows a STEVE phenomenon. Part of the red SAR arc is still visible but is much fainter and more of a pink color than its original red. The green and purple sky is more muted in color, and more stars and the band of the Milky Way are now visible. In both images, the silhouette of some shrubs is visible.
Posted inResearch Spotlights

From SAR Arc to STEVE: An Atmospheric Evolution

by Alexandra K. Scammell 6 September 20227 September 2022

A new study reports the first observation of a stable auroral red arc evolving into a strong thermal emission velocity enhancement during a geomagnetic storm.

One of two fire-generated vortices at the 2021 Dixie Fire
Posted inNews

Chasing Fire Tornadoes for Science

by Emily Shepherd 6 September 20226 September 2022

Recent research suggests fire-generated vortices are always present during wildfires.

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Features from AGU Publications

Research Spotlights

Charting a Path from Fire Features to Health Outcomes

5 June 20255 June 2025
Editors' Highlights

High Relief, Low Relief — Glaciers Do It All

4 June 20254 June 2025
Editors' Vox

Two Equations that Unlock El Niño

5 June 20254 June 2025
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