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.
Antarctica
Posted inFeatures
Redefining “Glacial Pace”
As Earth’s climate warms, glaciers and ice sheets are retreating, cracking, and adding to sea level rise at record speeds.
Posted inEditors' Vox
What We Know and Don’t Know About Climate Tipping Elements
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.
Posted inNews
Supercharged El Niño Could Speed Up Southern Ocean Warming
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.
Posted inNews
Ice Cores Record Long-Ago Seasons in Antarctica
Researchers used ice core data to reconstruct seasonal temperatures throughout the Holocene. The results link especially hot summers with patterns in Earth’s orbit.
Posted inENGAGE, News
“Icefin” Investigates a Glacial Underbelly
An instrument-laden submersible reveals where—and how rapidly—the Antarctic glacier is melting.
Posted inResearch Spotlights
How Thick Is Antarctic Ice, and What Is Underneath?
Scientists used electromagnetic fields to determine the thickness of fast ice.
Posted inNews
How Animals May Have Conquered Snowball Earth
We know there were animals during Earth’s chilliest era. The question is, What did they look like?
Posted inNews
Drones Make Weather Prediction Easier at the Poles
Researchers measured wind speed with a commercially available drone and a lightweight sensor. The approach could help scientists gather more data from remote environments.
Posted inEditors' Highlights
Clumped 18O –18O in Ice Reveals Past Ozone and Wildfire
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.