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carbon dioxide

A colorized image of the North Atlantic Ocean shows swirls of (from top to bottom) blue, green, yellow, and orange.
Posted inResearch Spotlights

What Could Happen to the Ocean’s Carbon If AMOC Collapses

by Rebecca Owen 6 January 20266 January 2026

Mass glacier melting may have led this influential ocean current system to collapse at the end of the last ice age. A pair of modeling studies examines how such a collapse could affect dissolved inorganic carbon and carbon isotopes in Earth’s oceans.

A satellite orbiting Earth.
Posted inEditors' Highlights

Taking Carbon Science Out of Orbit

Eric Davidson, president-elect of AGU by Eric Davidson 12 November 202512 November 2025

NASA’s Orbiting Carbon Observatory-2 satellite reveals an impressively dynamic picture of the Earth’s carbon cycle, yet it may be prematurely decommissioned and destroyed due to budget cuts.

Map of the contiguous United States with colors indicating plant photosynthesis.
Posted inEditors' Highlights

Serendipity in Space: NASA’s Eye in the Sky

by David S. Schimel 31 October 202531 October 2025

The Orbiting Carbon Observatory-2 (OCO-2) mission, proposed for early termination, has turned out to be a boon to forest and agricultural management.

Photo of Earth from afar.
Posted inEditors' Highlights

Rising CO2 and Climate Change Reorganize Global Terrestrial Carbon Cycling

by Sharon Billings 17 September 202517 September 2025

Rising CO2 and climate change are redistributing terrestrial carbon fluxes and reservoirs across latitudes and reducing carbon residence times globally.

A spherical, gray object with a mottled, shiny surface
Posted inNews

Fossilized Micrometeorites Record Ancient CO2 Levels

Katherine Kornei, Science Writer by Katherine Kornei 28 August 202528 August 2025

A cadre of iron-rich extraterrestrial particles picked up faint whiffs of our planet’s atmosphere when they fell to Earth millions of years ago.

Illustration of a hexagonal satellite with two large solar panels orbiting above a cloudy Earth.
Posted inResearch & Developments

NASA Planning for Unauthorized Shutdown of Carbon Monitoring Satellites

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 5 August 20255 August 2025

Despite warnings that their actions are illegal, Duffy and other senior NASA officials have continued to secretly direct NASA employees to draw up plans to end at least two major satellites missions specifically designed to monitor global carbon dioxide.

Primer plano de una veta blanca de calcita en roca basáltica gris con una pequeña planta sobre la roca.
Posted inOpinions

Verdaderas soluciones climáticas están debajo de nosotros

by Peter Reiners 29 July 20257 August 2025

Es momento de aceptar que el almacenamiento duradero de carbono en el subsuelo, junto con la reducción de emisiones, debe ser parte del plan para mitigar los efectos del cambio climático, y las geociencias deben desempeñar un papel central.

Diagram of the field experiment used in the study.
Posted inEditors' Highlights

Deep Root Respiration Helps Break Down Rocks

by Marc F. P. Bierkens 2 July 20252 July 2025

The carbon dioxide that results from respiration in and around deep roots is an essential component in the chemical weathering of sandstone rock soils.

A satellite orbiting Earth
Posted inEditors' Highlights

Coverage Factors Affect Urban CO2 Monitoring from Space

by Donald Wuebbles 12 June 202512 June 2025

Orbital mechanics and environmental factors limiting the ability of Orbiting Carbon Observatory missions to collect data in space and time affect city-level monitoring, reporting, and verification goals. 

一张从地面拍摄的田野土壤照片
Posted inResearch Spotlights

理解土壤湿度的关键可能在于简化

by Saima May Sidik 5 June 20255 June 2025

一个仅考虑降水和地表净辐射的简化模型似乎可以解决长期存在的问题。

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Calibrating the Clocks: Reconciling Groundwater Age from Two Isotopes

26 January 202622 January 2026
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Bridging the Gap: Transforming Reliable Climate Data into Climate Policy

16 January 202616 January 2026
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