Noticias sobre Antarctica
Accelerating melt rate makes Greenland Ice Sheet world’s largest ‘dam’
Researchers have observed extremely high rates of melting at the bottom of the Greenland Ice Sheet, caused by huge quantities of meltwater falling from the surface to the base.
Global river study finds pharmaceutical contamination on every continent
A new study looking at the presence of pharmaceuticals in the world’s rivers found concentrations at potentially toxic levels in more than a quarter of the locations studied.
Seawater seep may be speeding glacier melt, sea level rise
The melting of ice sheets at the points where they float on and along the world's oceans is a major climate culprit when it comes to sea-level rise.
New radar technology records Antarctic glaciers losing ice faster than ever documented before
In a new University of Houston study using an advanced remote imaging system known as synthetic aperture radar interferometry, three glaciers at the South Pole are being documented with levels of clarity and completeness never seen before.
Study looks at glacial lakes, dams in Alaska and potential for flooding
Brianna Rick, a doctoral student in the Department of Geosciences at Colorado State University, has been conducting research in Alaska for several years.
Polar ice contaminated with nanoplastics
Discovery raises concerns about the extent of plastic pollution in remote areas
Mega iceberg released 152 billion tonnes of fresh water into ocean
Scientists monitoring the giant A68A Antarctic iceberg from space reveal that a huge amount of fresh water was released as it melted around the sub-Antarctic island of South Georgia.
Research provides insight into world’s largest piedmont glacier
Understanding the surges and retreats of Alaska’s Malaspina Glacier is key if climate change models are to be applied to the glacier with confidence.
Himalayan glaciers melting at ‘exceptional rate’
The accelerating melting of the Himalayan glaciers threatens the water supply of millions of people in Asia, new research warns.
Satellite monitoring of Greenland ice melting highlights global flood risk
Global warming has caused extreme ice melting events in Greenland to become more frequent and intense over the past 40 years, raising sea levels and flood risk worldwide, finds new research involving UCL academics.
Wake up to the looming water crisis, report warns
Water-related hazards like floods and droughts are increasing because of climate change.
UCI, NASA JPL scientists uncover additional threat to Antarctica’s floating ice shelves
Thinning of rift-healing slush is identified as a major cause of iceberg calving events Ice melange, a combination of ice shelf fragments, windblown snow and frozen seawater, can act as a glue to fuse large rifts in floating ice in Antarctica.
A 1,000-year drought is hitting the U.S. West: Could desalination be a solution?
The United States and many other parts of the world are reeling under the impacts of severe drought.
Increased snowfall will offset sea level rise from melting Antarctic ice sheet, new study finds
A new study predicts that any sea level rise in the world’s most southern continent will be countered by an increase in snowfall, associated with a warmer Polar atmosphere.
Thwaites Glacier: Significant geothermal heat beneath the ice stream
Researchers map the geothermal heat flow in West Antarctica; a new potential weak spot in the ice sheet’s stability is identified.
Warming Western Antarctic Peninsula waters impact plankton community
Warming water and receding sea ice in the Western Antarctic Peninsula is changing the local plankton community with potential consequences for climate change, according to research led by scientists from Duke University and Duke Kunshan.
Some past sea levels may not have been as high as thought, study says
One of the current mysteries of climate science surrounds the widely accepted evidence that during the planet’s most recent past natural warm period, about 128,000 to 117,000 years ago, global sea levels peaked as high as 6 to 9 meters (20 or 30 feet) higher than today.
Understanding past climate change ‘tipping points’ can help us prepare for the future
Of all the creatures on Earth, humans manipulate their environments the most.
NASA space lasers map meltwater lakes in Antarctica with striking precision
From above, the Antarctic Ice Sheet might look like a calm, perpetual ice blanket that has covered Antarctica for millions of years.
Earth’s cryosphere shrinking by 87,000 square kilometers per year
First global assessment of the extent of snow and ice cover on Earth’s surface—a critical factor cooling the planet through reflected sunlight—and its response to warming…