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Antarctica

Tabular iceberg on the Sabrina Coast, East Antarctica
Posted inEditors' Vox

Antarctica in a Changing Climate

by T. L. Noble, E. J. Rohling and F. S. McCormack 12 November 20201 February 2022

The impacts of the Antarctic Ice Sheet response to climate change will have global consequences for millions living near the coast. It’s just a matter of when.

Satellite imagery showing the clouds of convective weather systems over Southeast Asia and the Philippine Sea on 18 September 2019
Posted inResearch Spotlights

Warming in the Antarctic Stratosphere Affects Tropical Weather

by Aaron Sidder 1 September 202029 March 2022

Rapid temperature spikes in the stratosphere above Antarctica can influence weather and spark cyclones in the Northern Hemisphere’s tropics.

Charts showing cumulative future CO2 emissions (left), surface temperature anomaly (center), and year when sea-ice area drops below 1 million km2 (right) under different CMIP6 emissions scenarios
Posted inEditors' Highlights

Characteristics of Polar Sea Ice in Latest Climate Models

by G. Magnusdottir 21 August 202022 April 2022

Sea ice area in CMIP6 is similar to previous versions while its sensitivity to external forcing is subtly different and closer to observations, but still not in step with global surface temperature.

Antarctic krill
Posted inNews

Emerging Technologies Help Scientists Tune In to Krill

by Hannah Thomasy 19 August 202022 October 2021

Acoustic tools identify the population of “the most important fishery in the Southern Ocean.”

Maps showing observed (left) and simulated (right) subsurface ocean heat content changes in the Southern Ocean
Posted inEditors' Highlights

Explaining Cold and Fresh Southern Polar Ocean Surface Waters

by P. Rizzoli 6 May 202015 November 2021

Global climate models do not reproduce observed trends of the Southern polar ocean surface, but an increase in wind-transported sea ice that melts and inhibits mixing may account for the disparity.

Metal drill going into ice hole
Posted inNews

A Subglacial Lake in Antarctica Churns Out Nutrients

by Katherine Kornei 8 April 202029 April 2022

Eight hundred meters below the West Antarctic Ice Sheet, microbes in subglacial Lake Whillans create organic carbon that helps power the Southern Ocean’s vast food chain.

Thwaites glaciar
Posted inNews

“Terremotos Glaciales” Vistos por Primera Vez en Thwaites

by Katherine Kornei 26 March 202013 January 2022

Estos eventos sísmicos, provocados por los icebergs que se vuelcan y chocan contra Thwaites, revelan que el glaciar ha perdido parte de su plataforma flotante de hielo.

Seismic monitoring equipment sits atop snow at a remote test site in Antarctica with a helicopter in the background.
Posted inScience Updates

A Shared Resource for Studying Extreme Polar Environments

by J. Sweet, J. P. Winberry, A. Huerta, K. Anderson, B. Beaudoin, S. Bilek, P. Carpenter, K. Nikolaus, A. Roth, K. Arnell, N. Lingutla and B. Woodward 18 March 202013 December 2021

A new community pool of seismic instrumentation will facilitate and advance geologic and cryospheric research in Earth’s ice-covered environments.

A science team moves equipment on sledges across the Thwaites Glacier in Antarctica in 2019.
Posted inAGU News

The Threat at Thwaites

by Heather Goss 24 February 202013 December 2021

This Antarctic glacier is rapidly losing mass. An international team is digging into the ice to figure out just how bad it is.

Large ice sheet on the right; water on the left
Posted inNews

“Glacial Earthquakes” Spotted for the First Time on Thwaites

by Katherine Kornei 17 February 202013 December 2021

These seismic events, triggered by icebergs capsizing and ramming into Thwaites, reveal that the glacier has lost some of its floating ice shelf.

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