Ocean and atmospheric data provide evidence for how sea surface temperatures affect the Southern Annular Mode.
Antarctica
Posted inNews
Elephant Seals' Dives Show Slowdown in Ocean Circulation
Data from instruments mounted on elephant seals reveal that melting ice flushes fresh water into the Southern Ocean, suppressing an important arm of the global ocean circulation belt.
Posted inResearch Spotlights
What Steers Antarctica's Largest Current?
Scientists have observed that pressure from current-seafloor encounters drives the direction of the massive Antarctic Circumpolar Current in the Southern Ocean.
Posted inResearch Spotlights
How Do the Deep Waters of the Antarctic Form?
Researchers uncover new insights into the life cycle of water in the Antarctic region by measuring noble gas concentrations.
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Antarctica's Ozone Hole Is Healing, Scientists Say
The ozone hole over Antarctica has shrunk by 16% since its peak in 2000, and some suspect it may disappear entirely by midcentury.
Posted inScience Updates
New Approaches for Air-Sea Fluxes in the Southern Ocean
Air-Sea Fluxes for the Southern Ocean: Strategies and Requirements for Detecting Physical and Biogeochemical Exchanges; Frascati, Italy, 21–23 September 2015
Posted inResearch Spotlights
Antarctica Gets a New Gravity Map
A comprehensive collection of variation in Earth's gravity could aid studies of the Antarctic geoid and of Antarctica's geology and ice sheet dynamics.
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Scientists Find the Point of No Return for Antarctic Ice Cap
Varying amounts of glacial debris in a core of ancient sediment show the ice cover grew and shrank until airborne carbon dioxide levels fell below 600 parts per million, spurring steady growth.
Posted inResearch Spotlights
Ocean Waves Vibrating the Ross Ice Shelf
Scientists use seismic stations to study ice shelf vibrations generated by ocean waves to better understand their impact on the integrity of the Ross Ice Shelf.
Posted inNews
Pleistocene Rocks Tell Tale of Past Ice Sheet Melting
Researchers examine evidence from a past interglacial period to predict sea level rise in the future.