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Carbon dioxide

Diagram showing the reaction process between carbonatite melt and harzburgite mantle rock.
Posted inEditors' Highlights

Why is the North China Craton Vulnerable to Destruction?

by Sujoy Ghosh 20 October 202218 October 2022

A new study suggests that carbonatite metasomatism, not silicate metasomatism as previously thought, was dominant prior to the removal of the North China Craton in the early Cretaceous.

A snow-covered mountain summit contains a smoking crater.
Posted inNews

Unlocking the Magmatic Secrets of Antarctica’s Mount Erebus

by Jenessa Duncombe 22 June 202222 June 2022

Unprecedented images of Mount Erebus’s inner workings show the unique trappings of a CO2-rich rift volcano.

Photos of clouds, forest and sea.
Posted inEditors' Vox

Inventorying Earth’s Land and Ocean Greenhouse Gases

by Benjamin Poulter, Ana Bastos, Josep G. Canadell, Philippe Ciais, Nicolas Gruber, Judith Hauck, Robert B. Jackson, Masao Ishii, Jens Daniel Müller, Prabir K. Patra and Hanqin Tian 17 February 20225 December 2022

A new special collection in AGU journals will present findings from the Second REgional Carbon Cycle Assessment and Processes (RECCAP2) study with a decade of data on greenhouse gas growth.

Photomicrographs showing typical subpolar (left) and polar (right) foraminiferal assemblages
Posted inResearch Spotlights

Atlantic Circulation Consistently Tied to Carbon Dioxide

by David Shultz 25 September 20198 June 2022

Past ocean surface conditions suggest that over the past 800,000 years, atmospheric carbon dioxide levels typically rose on millennial timescales when Atlantic overturning was weaker and vice versa.

Laboratory experiment used to simulate the shock wave made by an asteroid impact on Mars
Posted inResearch Spotlights

Rover and Lasers Unlock Clues to Early Martian Atmosphere

by Aaron Sidder 3 April 20193 January 2023

Sediments from the Curiosity rover and experiments using tanks of gas and laser beams helped reveal how water continued to flow on Mars after the planet lost its atmospheric carbon dioxide.

Quill volcano Sint Eustatius Island
Posted inScience Updates

Project VoiLA: Volatile Recycling in the Lesser Antilles

by S. Goes, J. Collier, J. Blundy, J. Davidson, N. Harmon, T. Henstock, J. M. Kendall, C. Macpherson, A. Rietbrock, K. Rychert, J. Prytulak, J. van Hunen, J. J. Wilkinson and M. Wilson 14 March 201927 January 2023

Deep water cycle studies have largely focused on subduction of lithosphere formed at fast spreading ridges. However, oceanic plates are more likely to become hydrated as spreading rate decreases.

Posted inEditors' Vox

Coastal Ocean Warming Adds to CO2 Burden

by P. Brewer 29 May 20185 January 2023

With coastal oceans around the world changing from the effects of urbanization, rising carbon dioxide levels, and climate warming, recent work begins to find new land-sea linkages.

Carbon dioxide frost presence at sunrise on Mars integrated over 1 year; note CO2 frost at low latitudes.
Posted inResearch Spotlights

Carbon Dioxide Frost May Keep Martian Soil Dusty

by David Shultz 8 July 201612 October 2022

Temperature readings acquired from orbit show that Mars's surface gets cold enough at night to allow layers of solid carbon dioxide frost up to several hundred micrometers thick to build up near the equator.

Yellowstone-National-Park-beehive-geyser
Posted inNews

Can Carbon Dioxide Trigger Geyser Eruptions?

by JoAnna Wendel 16 March 20166 October 2022

Researchers looking at geyser discharge water in Yellowstone National Park found that dissolved carbon dioxide could be involved in a geyser's eruption.

Posted inNews

Scientists Find the Point of No Return for Antarctic Ice Cap

by JoAnna Wendel 10 March 201618 October 2022

Varying amounts of glacial debris in a core of ancient sediment show the ice cover grew and shrank until airborne carbon dioxide levels fell below 600 parts per million, spurring steady growth.

Features from AGU Journals

RESEARCH SPOTLIGHTS
JGR: Solid Earth
“New Tectonic Plate Model Could Improve Earthquake Risk Assessment”
By Morgan Rehnberg

EDITORS' HIGHLIGHTS
AGU Advances
“Eminently Complex – Climate Science and the 2021 Nobel Prize”
By Ana Barros

EDITORS' VOX
Perspectives of Earth and Space Scientists
“New Directions for Perspectives of Earth and Space Scientists”
By Michael Wysession


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