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glaciers & ice sheets

Maps showing the high-resolution ocean model ECCO.
Posted inEditors' Highlights

Going with the Flow: New Tool Improves Sea Level Projections

by Nicholas Golledge 4 May 20231 May 2023

By bringing together multiple data sources a new statistical method aims to improve the accuracy with which we might predict future ice melt in Greenland.

Diagram of the carbon cycling in Subglacial Lake Mercer.
Posted inEditors' Highlights

Clues from a Subglacial Lake for Holocene Grounding Line Change

by Susan Trumbore 2 May 20231 May 2023

Organic carbon sampled in the lake contained radiocarbon, indicating connection to the ocean in the mid-Holocene, when the grounding line was up to 260 kilometers inland of its current position.

The lower part of Bear Glacier, Alaska, tripled in velocity in 2019, a phenomenon largely attributable to an ice-dammed lake suddenly draining through it.
Posted inFeatures

Redefining “Glacial Pace”

Damond Benningfield, Science Writer by Damond Benningfield 24 April 202324 April 2023

As Earth’s climate warms, glaciers and ice sheets are retreating, cracking, and adding to sea level rise at record speeds.

The velocity of Nioghalvfjerdsfjorden Glacier in Greenland is affected by surface meltwater flow as well as seasonal ice fluctuation.
Posted inAGU News

The Fast and the Curious

by Caryl-Sue Micalizio 24 April 202324 April 2023

Scientists get up to speed on phenomena ranging from fast moving atmospheric plasmas to a quickening glacial pace on Earth.

View through a microscope of yellow spheres and white shapes with thin lines
Posted inNews

Marine Life May Be Headed to Higher Latitudes

by Mackenzie White 19 April 202319 April 2023

Researchers tracked plankton through a changing climate over 8 million years. Now, that knowledge is helping scientists understand the coming effects of warming oceans.

A chunk of coastal permafrost has toppled into the sea along Alaska’s northernmost shores.
Posted inEditors' Vox

What We Know and Don’t Know About Climate Tipping Elements

by Seaver Wang 12 April 202311 April 2023

As climate change continues, parts of the Earth system such as ice sheets, frozen soils, or the Amazon rainforest could shift—some quickly, some slowly—after crossing key thresholds or tipping points.

Image depicting Viscosity estimates for the mantle underneath Greenland.
Posted inEditors' Highlights

4D Viscosity Constraints from Greenland 

by Thorsten Becker 28 March 202311 April 2023

The mantle’s resistance to flow appears different for glacial and plate tectonic timescales but this behavior can be reconciled with new thermo-mechanical models of the asthenosphere.

Un acercamiento a racimos de uvas moradas, aún en su planta, usadas para hacer vino Riportella. Algunas uvas en el racimo tienen gotas de rocío.
Posted inNews

Cómo el Último Máximo Glacial influenció en el origen del vino

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 27 March 202327 March 2023

El severo clima de la era de hielo influenció el cultivo de la vid durante el nacimiento de la agricultura.

Map showing glacier extent and graphs
Posted inEditors' Highlights

Scotland’s Last Glaciers Cause a Shift in an Old Paradigm

by Olga Sergienko 24 March 202324 March 2023

Cosmogenic geochronology of Scotland’s vanished glaciers indicates that the paradigm of weakened North Atlantic currents causing a rapid regional cooling is no longer valid.

Satellite image showing black water next to white ice with cracks
Posted inNews

Supercharged El Niño Could Speed Up Southern Ocean Warming

by Erin Martin-Jones 24 March 202324 April 2023

Projected changes to El Niño will likely accelerate warming of the deep oceans around the Antarctic, supplying heat that could drive ice loss and sea level rise.

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Features from AGU Journals

RESEARCH SPOTLIGHTS
Geophysical Research Letters
“Neural Networks Map the Ebb and Flow of Tiny Ponds”
By Sarah Derouin

EDITORS' HIGHLIGHTS
Community Science
“Collaboration Helps Overcome Challenges in Air Quality Monitoring”
By Muki Haklay

EDITORS' VOX
Reviews of Geophysics
“What We Know and Don’t Know About Climate Tipping Elements”
By Seaver Wang

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