Noticias sobre Antarctica
Ice sheet surface melt is accelerating in Greenland and slowing in Antarctica, finds study
Surface ice in Greenland has been melting at an increasing rate in recent decades, while the trend in Antarctica has moved in the opposite direction, according to researchers at the University of California, Irvine and Utrecht University in the Netherlands.
Thinning ice sheets may drive sharp rise in subglacial waters
Up to twice the amount of subglacial water that was originally predicted might be draining into the ocean – potentially increasing glacial melt, sea level rise, and biological disturbances.
Could artificially dimming the sun prevent ice melt?
With methods of so-called geoengineering, the climate could theoretically be artificially influenced and cooled.
Rapid changes in cryosphere demand urgent, coordinated action
The World Meteorological Organization (WMO) has decided to prioritize the cryosphere due to its significant impacts on sea level rise, water-related hazards, water security, economies, and ecosystems.
Scientists describe carbon cycle in a subglacial freshwater lake in Antarctica for first time
Subglacial lakes that never see the light of day are among the least accessible frontiers of science, brimming with more tales yet untold than even the planets of our solar system.
West Antarctic Ice Sheet retreated far inland, re-advanced since last Ice Age
A lake under a kilometer of ice preserves the ice sheet's past, hints at possibility of advancing even after large-scale retreat.
Ice sheets can collapse faster than previously thought
Ice sheets can retreat up to 600 metres a day during periods of climate warming, 20 times faster than the highest rate of retreat previously measured.
The ice in Antarctica has melted before, says study
Sixty percent of the world's freshwater is bound up in Antarctic ice sheets.
Deep ocean currents around Antarctica headed for collapse, study finds
Antarctic circulation could slow by more than 40 per cent over the next three decades, with significant implications for oceans and the climate.
Scientists calculate over 3,000 billion tons of ice lost from Antarctic ice sheet over 25 years
Scientists have calculated that the fastest changing Antarctic region—the Amundsen Sea Embayment—has lost more than 3,000 billion tons of ice over a 25-year period.
Trying to solve the ‘forever problem’ of PFAS pollution
Per- and polyfluoroalkyl substances (PFAS) can be found almost everywhere and in almost everyone and can take over 1000 years to break down.
Robot provides unprecedented views below Antarctic ice shelf
High in a narrow, seawater-filled crevasse in the base of Antarctica’s largest ice shelf, cameras on the remotely operated Icefin underwater vehicle relayed a sudden change in scenery.
Satellites reveal speed-up of Antarctic glaciers
Glaciers along the Antarctic peninsula are flowing faster in the summer because of a combination of melting snow and warmer ocean waters, say researchers.
Study provides close-up view of melting underneath the Thwaites Glacier
The rapid retreat of Thwaites Glacier in West Antarctica appears to be driven by different processes under its floating ice shelf than researchers previously understood.
Acceleration of global sea level rise imminent past 1.8°C planetary warming, says study
A study published in Nature Communications by an international team of scientists shows that an irreversible loss of the West Antarctic and Greenland ice sheets, and a corresponding rapid acceleration of sea level rise, may be imminent if global temperature change cannot be stabilized below 1.8°C, relative to the preindustrial levels.
Vast iceberg breaks off near UK Antarctic base
Satellite imagery confirms an enormous iceberg, around five times the size of Malta, has finally calved from Antarctica's Brunt Ice Shelf.
Global study of hypoxia in rivers shows it is more prevalent than previously thought
University of Nevada, Reno researcher leads study of over 125,000 locations in 93 countries.
AI developed to monitor changes to the globally important Thwaites Glacier
Scientists have developed artificial intelligence techniques to track the development of crevasses—or fractures—on the Thwaites Glacier Ice Tongue in west Antarctica.
Greenland’s glaciers might be melting 100 times as fast as previously thought
A computer model has been created by researchers at the Oden Institute for Computational Engineering and Sciences at The University of Texas at Austin that determines the rate at which Greenland’s glacier fronts are melting.
Satellites help scientists track dramatic wetlands loss in Louisiana
New research uses NASA satellite observations and advanced computing to chronicle wetlands lost (and found) around the globe.