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carbon cycle

A green riverbank and a building are visible behind a river.
Posted inResearch Spotlights

Tracing Black Carbon’s Journey to the Ocean

Aaron Sidder, freelance science writer by Aaron Sidder 11 July 202510 July 2025

Scientists surveyed a trio of estuaries in pursuit of a missing source of oceanic dissolved black carbon.

A photo of bubbles near the ocean’s surface, taken from underwater
Posted inResearch Spotlights

More Bubbles Means More Variation in Ocean Carbon Storage

by Saima May Sidik 8 July 20258 July 2025

A new model accounting for the role of bubbles in air-sea gas exchanges suggests that ocean carbon uptake is more variable than previously thought.

Imagen satelital de un paisaje rocoso en tonos marrones y rojizos, con llamativos pliegues y curvas geológicas.
Posted inResearch Spotlights

Un antiguo evento de calentamiento podría haber durado más de lo que pensábamos

by Rebecca Owen 2 July 20252 July 2025

Una nueva investigación sobre el Máximo Térmico del Paleoceno-Eoceno usó análisis probabilístico para entender mejor su duración y sobre cuánto tiempo podría afectar el calentamiento moderno al ciclo del carbono.

Two people lean over the side of a ship, lowering a long, yellow cylindrical instrument into the ocean.
Posted inResearch Spotlights

Robotic Floats Quantify Sinking Carbon in the Southern Ocean

Sarah Stanley, Science Writer by Sarah Stanley 27 May 202527 May 2025

An estimated 2.69 billion tons of carbon are exported to the deep sea every year from the Southern Ocean.

In the foreground is a beach covered in brownish seaweed, farther back is a body of water coated in chunks of floating ice, and in the distance are mountains and the sky.
Posted inResearch Spotlights

Seaweed Surges May Alter Arctic Fjord Carbon Dynamics

Sarah Stanley, Science Writer by Sarah Stanley 16 May 202516 May 2025

Climate change–accelerated seaweed growth could cause seaweed-dependent microbes to proliferate and consume more oxygen, leading to a rise in oxygen-starved zones.

Satellite image of a brown and red rocky landscape with striking geologic folds and curves
Posted inResearch Spotlights

An Ancient Warming Event May Have Lasted Longer Than We Thought

by Rebecca Owen 15 May 20252 July 2025

New research on the Paleocene-Eocene Thermal Maximum used probabilistic analysis to learn more about its duration and how long modern warming could affect the carbon cycle.

Photo of a rice paddy.
Posted inEditors' Vox

Decoding Crop Evapotranspiration

by Rangjian Qiu 6 May 20256 May 2025

The intricate factors influencing cropland evapotranspiration is uncovered in a new article, from stressors to diverse management practices, and reveals critical insights into changing climates.

A glacier curves between two dark mountains beneath a blue sky.
Posted inResearch Spotlights

Glaciers Offer Clues into the Path of Fossil Fuel Pollution

by Rebecca Owen 28 April 202518 June 2025

New research traces the origin of carbon deposited from the atmosphere onto glaciers.

Diagram from the study.
Posted inEditors' Highlights

Peatland Plantations in Southeast Asia are Carbon Hotspots

by Valeriy Ivanov 26 March 202526 March 2025

A new study reports a rare set of data on greenhouse gas production and transport for a tropical peatland plantation showing exceptionally high concentrations of dissolved organic carbon.

Photo of a river
Posted inEditors' Highlights

Carbon-Nutrient Ratios Drive Nitrate Removal in Mediterranean Streams

by Kyle Boodoo and Suzanne Tank 19 March 202519 March 2025

The type of organic matter, and ratio of nutrients to carbon, impact the ability of heterotrophic bacteria to effectively remove certain forms of nitrogen pollution (nitrate) from streams.

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Features from AGU Publications

Research Spotlights

Tracing Black Carbon’s Journey to the Ocean

11 July 202510 July 2025
Editors' Highlights

The Power of Naming Space Weather Events

10 July 20258 July 2025
Editors' Vox

Water Tracks: The Veins of Thawing Landscapes

25 June 202525 June 2025
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