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A large gray ash cloud covers the majority of visible Earth in a photo taken from the International Space Station.
Posted inNews

Tonga Eruption May Temporarily Push Earth Closer to 1.5°C of Warming

by J. Besl 16 March 202316 March 2023

The underwater eruption of Hunga Tonga–Hunga Ha‘apai sent megatons of water vapor into the stratosphere, contributing to an increase in global warming over the next 5 years.

A white water tower against a blue sky with trees in the foreground.
Posted inResearch Spotlights

U.S. Public Water Supply Is a Local Source of Phosphorus Pollution

by Rachel Fritts 16 March 202316 March 2023

Excess phosphorus may reach U.S. rivers, lakes, and groundwater through water main leaks and outdoor water use.

Photo of a brown landscape with a waterfall in the center flowing into a turbulent pool
Posted inNews

Silicate Weathering Throttles the Global Thermostat

by Nathaniel Scharping 8 March 20238 March 2023

The natural breakdown of some rocks sucks carbon dioxide out of the atmosphere. Knowing how quickly it happens could help scientists engineer solutions to the climate crisis.

Flowchart to choose priority areas for urban forest management.
Posted inEditors' Highlights

Confronting Water Use and Heat Exposure in Urban Sustainability 

by Donald Wuebbles 6 March 202314 March 2023

A framework is proposed for urban forest management to mitigate heat exposure, lessen drought issues, and conserve water use for urban heat mitigation and resilience in environmentally stressed cities. 

Un rayo aparece en medio de nubes de cenizas y vapor que están saliendo de volcán a la atmósfera sobre el océano.
Posted inResearch Spotlights

Monitoreando el agua en la columna eruptiva masiva del volcán de Tonga

by Sarah Stanley 15 November 202230 November 2022

La reciente erupción del volcán Hunga Tonga-Hunga Ha’apai arrojó aerosoles de sulfatos y una cantidad nunca antes vista de vapor de agua a la estratosfera.

A lightning bolt appears amid clouds of ash and steam that are billowing from a volcano high into the atmosphere over the ocean.
Posted inResearch Spotlights

Tracking Water in the Tongan Volcano’s Massive Eruption Plume

by Sarah Stanley 24 October 202230 November 2022

The recent eruption of the Hunga Tonga–Hunga Ha‘apai volcano blasted sulfate aerosols and a record-breaking amount of water vapor into the stratosphere.

Six photomicrographs
Posted inEditors' Highlights

Abiotic Life and Energy on Water-Rich Rocky Celestial Bodies

by Susanne Straub 22 September 202222 September 2022

The discovery of tiny crystals of the iron-rich hydroxychloride kuliginite in New Caledonia provides new insights into the hydrogen production from mantle rocks and saline water.

Satellite image of ancient lava flows on Mars
Posted inNews

This One Simple Trick Helps Us Understand How Much Water Is in Martian Lavas

by Erik Klemetti 24 August 202216 September 2022

Understanding how much water is in Martian magma is vital for understanding whether the Red Planet had seas in its early history.

A gold-colored spacecraft with large solar panels flies in front of Mars.
Posted inNews

Zhurong Rover Spots Evidence of Recent Liquid Water on Mars

by Katherine Kornei 14 June 20225 January 2023

The Chinese rover identified hydrated minerals—likely associated with groundwater—in sediments dating to the Red Planet’s most recent geologic period.

On the left: a view of Pluto, as imaged by the New Horizons spacecraft. On the right: a close-up of an undulating region believed to have been formed by volcanoes that erupted icy material.
Posted inNews

Pluto’s Surface Was Recently Sculpted by Icy Volcanism

by Katherine Kornei 2 May 202217 February 2023

Geologically young regions of Pluto’s southern hemisphere were likely resurfaced by cryovolcanism, data from the New Horizons spacecraft reveal.

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Features from AGU Journals

RESEARCH SPOTLIGHTS
Earth’s Future
“How to Build a Climate-Resilient Water Supply”
By Rachel Fritts

EDITORS' HIGHLIGHTS
AGU Advances
“How Do Atmospheric Rivers Respond to Extratropical Variability?”
By Sarah Kang

EDITORS' VOX
Reviews of Geophysics
“Rare and Revealing: Radiocarbon in Service of Paleoceanography”
By Luke C. Skinner and Edouard Bard

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