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Antarctica

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 March 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.

A long cylinder of ice on a table
Posted inNews

Ice Cores Record Long-Ago Seasons in Antarctica

by Caroline Hasler 17 March 202320 March 2023

Researchers used ice core data to reconstruct seasonal temperatures throughout the Holocene. The results link especially hot summers with patterns in Earth’s orbit.

A white landscape with five people standing around a white tower with a yellow cylinder hanging vertically in the middle
Posted inNews

“Icefin” Investigates a Glacial Underbelly

by Katherine Kornei 15 March 202316 March 2023

An instrument-laden submersible reveals where—and how rapidly—the Antarctic glacier is melting.

A red plane flies against clear blue skies over white ice. Mountains can be seen in the background.
Posted inResearch Spotlights

How Thick Is Antarctic Ice, and What Is Underneath?

by Saima May Sidik 22 February 202322 February 2023

Scientists used electromagnetic fields to determine the thickness of fast ice.

An artist’s rendering of Earth covered in ice
Posted inNews

How Animals May Have Conquered Snowball Earth

by Chris Baraniuk 9 January 202323 January 2023

We know there were animals during Earth’s chilliest era. The question is, What did they look like?

A drone hovers over a beach.
Posted inNews

Drones Make Weather Prediction Easier at the Poles

by Andrew Chapman 23 December 202223 December 2022

Researchers measured wind speed with a commercially available drone and a lightweight sensor. The approach could help scientists gather more data from remote environments.

Two graphs from the paper.
Posted inEditors' Highlights

Clumped 18O –18O in Ice Reveals Past Ozone and Wildfire

by Sarah Feakins 9 December 20227 December 2022

Reactive gases like ozone are hard to preserve, but clumped isotopes and models provide clues to past ozone and suggest a global increase in wildfire at megafaunal extinction.

A yellow submarine-shaped autonomous underwater vehicle hangs from a cable over the side of ship as technicians and scientists look on.
Posted inResearch Spotlights

Exploring a Warm Water Inflow Below an Antarctic Ice Shelf

by Sarah Derouin 5 December 20225 December 2022

Researchers guided an autonomous underwater submarine to capture the first direct observations of a warm water current flowing in below the Filchner-Ronne Ice Shelf in Antarctica.

Satellite view of an ice shelf and sea ice
Posted inResearch Spotlights

A Close Look at Melting Below Antarctica’s Largest Ice Shelf

by Rachel Fritts 28 October 202228 October 2022

Radar data reveal where, when, and how fast the base of the Filchner-Ronne Ice Shelf has been losing mass in recent years.

The research vessel Nathaniel B. Palmer studies the Thwaites Glacier in 2019.
Posted inNews

Seafloor Reveals a Period of Rapid Retreat for Thwaites Glacier

by Javier Barbuzano 13 October 202225 January 2023

New high-resolution seafloor imagery shows a series of delicate ridges produced by the glacier’s front as it bobbed daily with the tides, revealing a recent period of rapid retreat.New high-resolution seafloor imagery shows a series of delicate ridges produced by the glacier’s front as it bobbed daily with the tides, revealing a recent period of rapid retreat.

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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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