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Pliocene

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.

Photo of an ocean with snow-capped mountains in the background.
Posted inEditors' Vox

Marine Sediments Reveal Past Climate Responses to CO2 Changes

by Sze Ling Ho and Erin McClymont 21 September 202320 September 2023

Climate records stored in marine sediments reveal different ice sheet and ocean responses to falling atmospheric CO2 concentrations from the warm Pliocene to the ice ages of the Pleistocene.

Two graphs from the paper.
Posted inEditors' Highlights

Pliocene Conveyer Belt in the Pacific

by Vincent Salters 6 September 20237 September 2023

Ocean Drilling Program cores and helium isotopes put better constraints on the ocean circulation in the north Pacific.

Posted inEditors' Highlights

A Drier or Wetter Future for Southwestern North America?

by Susan Trumbore 31 December 202217 February 2023

Bhattacharya et al. present evidence that expansion of the North American Monsoon explains a wetter southwest in the mid-Pliocene and suggest this mechanism can explain current monsoon variations.

Lina Pérez-Ángel smiles from a balcony in front of the Colombian Andes.
Posted inFeatures

Lina C. Pérez-Ángel: Proud to Study Paleoclimate in Colombia

by Meghie Rodrigues 25 July 202226 January 2023

As a young Latina, Pérez-Ángel brings a fresh perspective to paleoclimatology.

Irtysh River flowing through Siberia.
Posted inResearch Spotlights

Irtysh River Drove Arctic Sea Ice Expansion 3 Million Years Ago

by David Shultz 29 July 202126 January 2023

The Siberian river’s creation caused a massive influx of fresh water into the Kara Sea and radically changed the Arctic Ocean and Earth’s climate.

Yangtze River
Posted inResearch Spotlights

Researchers Home in on the Age of the Yangtze River

Joshua Learn, Science Writer by Joshua Rapp Learn 10 March 202126 January 2023

Findings on the river’s age also have implications for past landscape change in Asia.

Satellite image of dust carried from China into the north Pacific
Posted inNews

Dust on the Wind

by Nancy Averett 17 February 202126 January 2023

A new study confirms that an important wind system is shifting due to climate change.

A view along the Atlantic coastline of South Africa showing hillslopes descending to the beach and ocean
Posted inResearch Spotlights

Ancient Sea Levels in South Africa May Offer Modern Analogues

Aaron Sidder, freelance science writer by Aaron Sidder 14 July 202026 January 2023

Largely spared from disruptive tectonic activity, the South African coastline offers a natural setting to study sea levels from when Earth’s atmospheric carbon dioxide last reached today’s levels.

Phytoplankton bloom over the study area in the South Pacific Ocean
Posted inResearch Spotlights

Southern Hemisphere Sediments Show Surprising Pliocene Cyclicity

by Terri Cook 25 April 201926 January 2023

New, high-resolution paleoclimate reconstructions with 100,000-year rhythms may offer insights into how Earth’s climate system operated during a time when the planet was warmer than it is today.

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Features from AGU Publications

Research Spotlights

New Global River Map Is the First to Include River Bifurcations and Canals

15 May 202514 May 2025
Editors' Highlights

Old Forests in a New Climate

15 May 202514 May 2025
Editors' Vox

Decoding Crop Evapotranspiration

6 May 20256 May 2025
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