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paleoclimatology & paleoceanography

Fine-grained sand on the ocean floor, marked by the rippling movement of currents
Posted inResearch Spotlights

Mapping the Ocean Floor with Ancient Tides

Aaron Sidder, freelance science writer by Aaron Sidder 6 May 20256 May 2025

A new study uses a paleotidal model to trace the formation of carbon-rich mud deposits over thousands of years.

A gif flips back and forth between two images of the Po River Basin. In June 2020, it appears much greener than in June 2022.
Posted inResearch Spotlights

Modeling the Past, Present, and Future of Drought

by Rebecca Owen 18 April 202518 April 2025

A new study combines historical observations, climate modeling, and data from tree rings to create a fuller picture of historic as well as potential drought conditions.

Dozens of ice cores—long, thin cylinders—are stored on a metal shelf and seen from the front, so they look like circles.
Posted inResearch Spotlights

When Ice Ages End, Ocean Circulation Fine-Tunes Ocean Heat

Sarah Stanley, Science Writer by Sarah Stanley 14 April 202514 April 2025

New Antarctic ice core data bolster model predictions of ocean heat content during glacials and interglacials.

Diagram from the study.
Posted inEditors' Highlights

Taking Our Paleoceanographic Tools to the Next Level

by David Thornalley 2 April 202527 March 2025

A new modeling study shows that to accurately interpret data derived from an iconic proxy of past Atlantic overturning strength, we must consider the complex factors governing the proxy systematics.

Stylized illustration in shades of blue of a person holding a magnifying glass above what looks like the tail of a dinosaur or other large animal.
Posted inOpinions

The Valuable, Vulnerable, Long Tail of Earth Science Databases

by Andrea K. Thomer, John W. Williams, Simon Goring and Jessica L. Blois 20 March 202529 April 2025

Community-curated data resources in the Earth sciences, highly valuable but systematically underfunded, are vital to research on a changing planet.

Earth’s North Pole surface covered in ice
Posted inNews

How Do You Make Earth into an Icehouse?

by Nathaniel Scharping 6 March 20256 March 2025

A new model accurately reconstructs Earth’s past icehouses and indicates there’s no one driver behind them.

Researchers walk toward a large geodesic dome and a small red Quonset hut on the Greenland Ice Sheet.
Posted inNews

Tiny Icequakes Ripple Through Greenland’s Largest Ice Stream

by J. Besl 5 March 20255 March 2025

Seismologists made an accidental discovery on the Northeast Greenland Ice Stream, changing the way glaciologists understand how ice moves.

Four scientists celebrate with karaoke on the deck of the JOIDES Resolution.
Posted inOpinions

Expedition 403: Sailing the Last Expedition of the JOIDES Resolution

by Adriane Lam, Gryphen Goss and Nicole Greco 28 February 202528 February 2025

Early-career geoscientists share melancholy memories about hard science and intangible networks of collaboration.

A cave with white stalagmites and stalactites.
Posted inNews

Cave Deposit Links Greenland’s and Europe’s Climate Records with a German Volcano

by Bill Morris 21 February 202521 February 2025

Dating a late Pleistocene eruption has big implications for understanding the Younger Dryas—and current climate change.

A rock formation with many layers sits beneath a blue sky.
Posted inResearch Spotlights

Ancient Climate Reconstruction Links Past and Future

Aaron Sidder, freelance science writer by Aaron Sidder 4 February 20254 February 2025

A new map of climate conditions during the Pliocene epoch—the last time Earth’s carbon dioxide concentrations hit 400 parts per million—could offer clues about possible climatic changes in store for the 21st century.

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Features from AGU Publications

Research Spotlights

Robotic Floats Quantify Sinking Carbon in the Southern Ocean

27 May 202527 May 2025
Editors' Highlights

Creep Cavitation May Lead to Earthquake Nucleation

22 May 202521 May 2025
Editors' Vox

Decoding Crop Evapotranspiration

6 May 20256 May 2025
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