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carbon cycle

A person in a wetsuit wades through an underwater cloud of salps.
Posted inResearch Spotlights

Jet-Propelled Tunicates Pump Carbon Through the Oceans

Aaron Sidder, freelance science writer by Aaron Sidder 19 January 202317 February 2023

New research reveals that blooms of the widespread gelatinous zooplankton—along with their feces, daily vertical migrations, and carcasses—increase marine carbon export.

A scientific instrument being lowered from a research vessel into the ocean
Posted inENGAGE, News

Deep-Sea Pressure Crushes Carbon Cycling

by Elise Cutts 11 January 20234 May 2023

The extreme pressure in the deep sea stifles microbes’ appetite for organic carbon. This finding could have important implications for carbon budgets and geoengineering.

A tuft of switchgrass with its associated roots is displayed horizontally on a black background.
Posted inResearch Spotlights

The World’s Roots Are Getting Shallower

by Rebecca Dzombak 17 November 202217 November 2022

Root-filled soils are hot spots of nutrient cycling and carbon storage. New research finds that the world has lost millions of cubic meters of rooted soil volume—and we’re on track to lose much more.

R/V Mirai makes its way across Arctic sea ice.
Posted inNews

The Bottom of the Arctic Is Blooming

by Fanni Daniella Szakal 14 November 202217 November 2022

Researchers found phytoplankton hidden on the Arctic seafloor, hinting at a cascade of effects on the local ecology and carbon cycle.

Researcher at an observation tower in a plot where the towers will be installed
Posted inNews

Testing the Resilience of the Amazon

by Sofia Moutinho 10 November 202222 December 2022

A mega-experiment in Brazil will evaluate how tropical rain forests absorb carbon as emissions increase.

Posted inEditors' Highlights

Respiration Quotient Variability and Ocean Oxygen Levels

by Eileen Hofmann 1 November 20221 November 2022

Respiration quotients in the Atlantic and Pacific Oceans reflect different water temperature, nutrient stress and phytoplankton community structure, important for regional carbon and oxygen cycling.

Emissions rise from industrial towers along a waterfront in front of a hazy orange sunset.
Posted inResearch Spotlights

Tracing Anthropogenically Emitted Carbon Dioxide into the Ocean

Aaron Sidder, freelance science writer by Aaron Sidder 17 October 202215 March 2023

Researchers labeled anthropogenically emitted carbon and tracked it with an ocean circulation model to determine whether it winds up in the sky or sea.

Map of the Yukon-Kuskokwim Delta in Alaska
Posted inEditors' Highlights

The Burning Tundra

by Marguerite A. Xenopoulos 4 October 202219 January 2023

As wildfires blaze through the Arctic, scientists examine the role of landscape characteristics on wildfire ecosystem responses in northern aquatic ecosystems.

Close-up of green olivine sand grains
Posted inNews

Can These Rocks Help Rein in Climate Change?

Tim Hornyak, Science Writer by Tim Hornyak 27 September 20221 June 2023

Spreading olivine on beaches could accelerate ocean uptake of carbon dioxide and potentially limit climate change. The concept and execution still face some scrutiny from scientists.

Figure 1 from the paper, showing a schematic of key processes controlling coastal carbon dynamics.
Posted inEditors' Highlights

Substantial Advance Towards a Global Coastal Carbon Model

by Andreas Oschlies 27 September 202220 October 2022

First simulations of a new biogeochemistry-circulation coastal grid refinement demonstrate seamless inclusion of small-scale coastal processes in a state-of-the-art Earth system model.

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Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

Features from AGU Publications

Research Spotlights

Tiny Cyanobacteria May Be the Secret Heroes of Ocean Carbon Sequestration

10 September 202610 September 2026
Editors' Highlights

Waves Play a Key Role for Lateral Stirring and Mixing of Ocean Tracers

11 September 202611 September 2026
Editors' Vox

How Can We Make Better Decisions About What Lies Underground?

10 September 202610 September 2026
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