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Search resuls for: "East Antarctica"


10 mentions found


☆ Good news, bad news: U.S. emissions shrank last year, but very slowly
  + stars: | 2024-01-10 | by ( Evan Bush | ) www.cnbc.com   time to read: +4 min
Carbon emissions shrank in 2023 even as the economy grew, a sign the U.S. is plodding toward a more sustainable future. "This is the first time since 2019 that the economy has grown while emissions have fallen," said Ben King, an associate director leading the Rhodium Group energy team. U.S emissions fell sharply in 2020 during the coronavirus pandemic, when activities were restricted, and then rebounded in the two years that followed. The Biden administration, which rejoined the Paris Climate Agreement in 2021, said it would target emission cuts of 50% to 52% by 2030. The power and buildings sectors were responsible for the 2023 emissions decline, according to the Rhodium analysis.
Persons: Ben King, Biden, King, Joe Biden's Organizations: U.S, Stockholm Environment Institute, EV, U.S . Locations: Los Angeles, Los Angeles , California, Paris, Stockholm, Greenland, West Antarctica, East Antarctica, U.S
☆ Apollo 17 astronauts collected rocks that reveal the moon’s true age
  + stars: | 2023-10-28 | by ( Ashley Strickland | ) edition.cnn.com   time to read: +6 min
The moon’s gravitational pull is also the force behind ocean tides and partly why our planet has a 24-hour day. Geologist and astronaut Harrison Schmitt used an adjustable sampling scoop to retrieve lunar samples during the Apollo 17 mission in 1972. Zircon crystals formed as the moon cooled 4.46 billion years ago, and a new analysis traced them in the Apollo 17 samples. NASAAn ancient landscape has been discovered beneath the East Antarctic ice sheet, thanks to ice-penetrating radar. Understanding the hidden, well-preserved landscape could help scientists predict the evolution of the ice sheet and how it may fare as temperatures warm in the climate crisis.
Persons: Harrison Schmitt, Eugene Cernan, ”, Jennika Greer, Nick Gray, James Webb, Stewart Jamieson, Ashley Strickland, Katie Hunt Organizations: CNN, NASA, Apollo, University of Glasgow, JBA Consulting, Environment Agency Engineers, Environment, Durham University, CNN Space, Science Locations: Europe, Africa, Asia, Australia, England's Isle of Wight, Isle of Wight, Orkney Islands, Denman, East Antarctica, Belgium, North Wales, Iraq, Syria
☆ A hidden feedback loop under Antarctica’s glaciers could accelerate sea level rise, scientists find
  + stars: | 2023-10-27 | by ( Rachel Ramirez | ) edition.cnn.com   time to read: +4 min
CNN —Glaciers in East Antarctica could lose ice faster in the future than previously thought, scientists reported Friday, in an alarming feedback loop where glacier meltwater is triggering even more ice loss and sea level rise as the planet warms. Together, these and other recent studies paint a dire picture of a melting southern continent that poses extreme risk of life-altering sea level rise around the world. Friday’s study factored that feedback into simulations to see how much it could accelerate Antarctic melting and sea level rise. Measuring this phenomenon and accounting for it in climate models is necessary “to get a realistic picture of global sea level rise,” Greenbaum said. “Given this evidence, subglacial melt and discharge is a process that can no longer be ignored in future projections of Antarctica’s contribution to sea level rise,” De Rydt told CNN.
Persons: CNN —, it’s, ”, Jamin Greenbaum, Denman, Scott, Greenbaum, ” Greenbaum, Tyler Pelle, ” Pelle, Pelle, we’re, ” Jan De Rydt, ” De Rydt, “ Organizations: CNN, University of California San Diego’s Scripps, of Oceanography, Scripps, Northumbria University Locations: East Antarctica, Antarctica
☆ Researchers discovered a hidden Antarctic landscape under a layer of ice over a mile thick that shows how different the continent looked millions of years ago
  + stars: | 2023-10-25 | by ( Jenny Mcgrath | ) www.businessinsider.com   time to read: +3 min
Researchers recently found an "undiscovered landscape" beneath Antarctica's ice. But between 14 million and 34 million years ago, an ice sheet crept across the continent. It locked some of the lush landscape beneath over a mile of ice, per NBC News. This helped the researchers determine the height of peaks and depths of valleys that lay hidden beneath the ice. A rewarming AntarcticaIt's crucial to understand how warming temperatures will impact Antarctica's ice.
Persons: Stewart Jamieson, Jamieson Organizations: Service, NBC, Agence France, Live, Nature Communications, Reuters There's, Guardian Locations: Antarctica, Maryland, East Antarctica, Patagonia
☆ Scientists discover an ancient landscape in an area on Earth ‘less well known than the surface of Mars’
  + stars: | 2023-10-25 | by ( Katie Hunt | ) edition.cnn.com   time to read: +4 min
CNN —An ancient landscape hidden under the East Antarctic ice sheet for at least 14 million years has been revealed with the help of satellite data and planes equipped with ice-penetrating radar. Scientists used the remote sensing techniques to map 32,000 square kilometers (12,300 square miles) of land — an area around the same size as Belgium. “The land underneath the East Antarctic Ice Sheet is less well known than the surface of Mars,” Jamieson said in a statement. The ancient landscape was discovered beneath the ice inland from Denman Glacier in East Antarctica pictured here. The East Antarctic ice sheet first formed around 34 million years ago, but it would have subsequently fluctuated in size, sometimes revealing the land beneath.
Persons: Stewart Jamieson, ” Jamieson, Jamieson, We’re Organizations: CNN, Nature Communications, University of Durham, NASA Locations: Belgium, North Wales, Denman, East Antarctica
☆ Ancient landscape formed by rivers revealed deep under Antarctic ice
  + stars: | 2023-10-24 | by ( Will Dunham | ) www.reuters.com   time to read: +4 min
Researchers said on Tuesday they have detected buried under the continent's ice sheet a vast ancient landscape, replete with valleys and ridges, apparently shaped by rivers before being engulfed by glaciation long ago. Ancient palm tree pollen has been discovered from Antarctica, not far around the coast from our study site," Jamieson added. Some previous studies similarly have revealed ancient landscapes beneath Antarctica's ice including mountains and highlands, though the landscape discovered in the new study was the first of its type. Right before 34 million years ago, Antarctica's landscape and flora likely resembled today's cold temperate rainforests of Tasmania, New Zealand and South America's Patagonia region, Ross added. When that ice growth occurred, the conditions between the base of the ice and the landscape changed to become very cold - and in this way it was no longer able to erode our landscape.
Persons: Stewart Jamieson, Antarctica's, Jamieson, Neil Ross, Ross, Will Dunham, Daniel Wallis Organizations: Durham University, Handout, REUTERS, Rights, Antarctica, Nature Communications, Newcastle University, Thomson Locations: Belgium, Wilkes Land, East Antarctica, Antarctica, East Antarctica's Wilkes Land, ., Maryland, England, Patagonia, Greenland, Tasmania , New Zealand, South, Africa, South America, Australia
☆ Travel news: Underwater metro routes and marine discoveries
  + stars: | 2023-04-29 | by ( Maureen O'Hare | ) edition.cnn.com   time to read: +5 min
Get the latest news in aviation, food and drink, where to stay and other travel developments. CNN —Incredible Italian home makeovers, jaw-dropping marine discoveries and ritzy new trains in Scotland and Taiwan: We’ve got all this and more in our latest roundup of news and features from CNN Travel. Massachusetts couple Doug and Leah Johnson renovated a 14th-century apartment in the town of Vasanello in Lazio that they bought for less than $14,000. Life on the railsAustralia and India are celebrating milestones in underwater travel. And on April 12, Kolkata’s new underwater metro route completed its maiden run, ahead of opening to the public in November.
☆ Space power China to build ground stations on Antarctica to support satellites
  + stars: | 2023-02-02 | by ( ) www.reuters.com   time to read: +2 min
China's global network of ground stations to support a growing number of satellites and outer space ambitions has drawn concern from some nations that it could be used for espionage, a suggestion China rejects. In 2020, Sweden's state-owned space company, which had provided ground stations that helped fly Chinese spacecraft and transmit data, declined to renew contracts with China or accept new Chinese business due to "changes" in geopolitics. The project was part of broader initiatives aimed at building China's marine economy and turning China into a marine power, according to China Space News. A Chinese-built ground station in Argentina's Patagonia has stirred concerns about its purpose despite China's assurance that the station's goal is peaceful space observation and spacecraft missions. China in October launched the last of three modules of its space station, which became the second permanently inhabited outpost in low-earth orbit after the NASA-led International Space Station.
☆ Map shows the ice sheets and glaciers melting that scientists most fear will be the source of catastrophic rising sea levels
  + stars: | 2023-01-01 | by ( Marianne Guenot | Annie Fu | ) www.businessinsider.com   time to read: +13 min
Melting ice that could tip sea level rise into catastrophic levelsSource: NASA Ice ViewerChart: Annie Fu/InsiderWhile it's easier to plan for a steady sea level rise, scientists are very concerned about what would happen if huge chunks of ice collapse and abruptly change sea levels. The Antarctic ice sheet is much bigger than the ice sheet on Greenland. If they were to melt totally, the Greenland ice sheet would contribute about 23 ft to the sea levels, while the Antarctic ice sheet holds enough ice to raise sea levels by 58 feet. Local sea level variationGlobal mean sea level rise is only a snapshot of the whole picture. Because sea levels are influenced by the local environment, the sea level rise can be much higher locally than it is on a global scale.
☆ COP27: Loss of Arctic summer sea ice 'inevitable' within 30 years — report
  + stars: | 2022-11-07 | by ( Gloria Dickie | ) www.reuters.com   time to read: +3 min
The newest report's authors highlighted the "terminal diagnosis" for the ice that forms and floats atop the Arctic Ocean each summer. On Monday evening, Arctic campaigners and indigenous youth from the region planned a media event to mark the demise of sea ice. Mallett said COP27 talks would do little to save the summer sea ice. Last year, the U.N. Intergovernmental Panel on Climate Change said summer sea ice would be lost even if warming peaked at 1.6 degrees above the preindustrial average. If summer sea ice is lost, no multiyear sea ice — sea ice that persists in the ocean from year to year — will remain.
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