Noticias sobre Antarctica
New flood damage framework helps planners prepare for sea-level rise
Scientists agree that sea levels will continue to rise this century, but projections beyond 2050 are much more uncertain regarding exactly how much higher ocean levels will be by 2100.
Six-fold increase in polar ice losses since the 1990s
Greenland and Antarctica are losing ice faster than in the 1990s and are both tracking the Intergovernmental Panel on Climate Change’s worst-case climate warming scenario.
UN report highlights increasing signs and impacts of climate change in atmosphere, land and oceans
The tell-tale physical signs of climate change such as increasing land and ocean heat, accelerating sea level rise and melting ice are highlighted in a new report compiled by the World Meteorological Organization and an extensive network of partners.
Melting ice, the climate change we can see
The loss of ice on Earth is one of the most worrying and visible consequences of global warming.
Almost alien: Antarctic subglacial lakes are cold, dark and full of secrets
Getting water samples from an Antarctic lake under 800 meters of ice takes days of drilling, precise equipment, lots of patience and an eagerness to understand one of the world’s most extreme environments.
Quo vadis Antarctic Bottom Water?
Export of the most important deep-water mass of the Southern Hemisphere is prone to disturbances
New record for Antarctic continent reported
The Argentine research base, Esperanza, on the northern tip of the Antarctic peninsula, set a new record temperature of 18.3°C on 6 February, beating the former record of 17.5°C on 24 March 2015, according to Argentina’s national meteorological service (SMN).
Cornell geologists detect rapid ‘ice stream’ at Arctic glacier
Cornell geologists, examining the desolate Vavilov ice cap on the northern fringe of Siberia in the Arctic Circle, have for the first time observed the rapid ice loss from an improbable new river of ice, according to new work in the journal Geophysical Research Letters.
Greenland’s rapid melt will mean more flooding
The Greenland Ice Sheet is rapidly melting, having lost 3.8 trillion tons of ice between 1992 and 2018, a new study from NASA and the European Space Agency (ESA) finds.
2019 concludes a decade of exceptional global heat and high-impact weather
The year 2019 concludes a decade of exceptional global heat, retreating ice and record sea levels driven by greenhouse gases from human activities.
‘Dream team’ to study ice loss on critical Greenland glacier to better forecast rising oceans
Last month a new projection of sea-level rise by the year 2050 spurred headlines showing more coastal cities around the world will be submerged than earlier models have predicted.
Tierra del Fuego: water that keeps the secrets of life
The mountains of the southern tip of the South American continent take visitors to a journey back in time: its rivers and streams flow towards the ocean as they did in pre-industrial times, filled with pure water.
IPCC report warns of a gloomy future for oceans and cryosphere
The latest Intergovernmental Panel on Climate Change (IPCC) Special Report highlights the urgency of prioritizing timely, ambitious and coordinated action to address unprecedented and enduring changes in the ocean and cryosphere.
‘Martian CSI’ reveals how asteroid impacts created running water under red planet
Modern analysis of Martian meteorites has revealed unprecedented details about how asteroid impacts help create temporary sources of running water on the red planet.
New facility to help Australian scientists protect groundwater
A unique new facility launched today at the University of Adelaide will help protect Australia’s precious groundwater from overuse and contamination, and contribute to our understanding of the impact of climate change through measurements on Antarctic ice cores.
Salt deposits on Mars hold clues to sources of ancient water
UChicago study offers way to test whether water flowed deep underground on Red Planet.
NASA’s GRACE-FO shows the weight of Midwestern floods
In May 2019, after the wettest 12 months ever recorded in the Mississippi River Basin, the region was bearing the weight of 8 to 12 inches (200 to 300 millimeters) more water than average.
A clearer picture of global ice sheets
Fluctuations in the masses of the world’s largest ice sheets carry important consequences for future sea level rise, but understanding the complicated interplay of atmospheric conditions, snowfall input and melting processes has never been easy to measure due to the sheer size and remoteness inherent to glacial landscapes.
Flowing Antarctic ice mapped 10 times more accurately
Project utilized 25 years of data from six international satellite missions.
Underwater glacial melting is occurring at higher rates than modeling predicts
By Carolyn Levinn and Jim Barlow, University Communications.