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☆ Polar ice is melting and changing Earth’s rotation. It’s messing with time itself
▼ + stars: | 2024-03-27 | by ( Laura Paddison | Rachel Ramirez | ) edition.cnn.com time to read: +5 min

Exactly when that will happen is being influenced by humans, according to a new study, as melting polar ice alters the Earth’s rotation and changes time itself. The hours and minutes that dictate our days are determined by Earth’s rotation. But after a long trend of slowing, the Earth’s rotation is now speeding up. Melting polar ice is slowing the impact on Earth’s rotation and has delayed the date by three years, pushing it from 2026 to 2029, the report found. Changes in Earth’s rotation over the long term have been dominated by the friction of the tides on the ocean floor — which has slowed down its rotation.

Persons: Patrizia, ”, Duncan Agnew, Agnew, Ted Scambos, ” Agnew, “, Olivier Morin, Scambos Organizations: CNN, Time Department, International Bureau, University of California San, University of Colorado Boulder Locations: France, University of California San Diego, Scoresby Fjord, Greenland, AFP

☆ The ‘Doomsday Glacier’ is rapidly melting. Scientists now have evidence for when it started and why
▼ + stars: | 2024-02-26 | by ( Laura Paddison | ) edition.cnn.com time to read: +6 min

They have discovered it started retreating rapidly in the 1940s, according to a new study that provides an alarming insight into future melting. The Thwaites Glacier in West Antarctica is the world’s widest and roughly the size of Florida. “Once an ice sheet retreat is set in motion it can continue for decades, even if what started it gets no worse,” he told CNN. While similar retreats have happened much further back in the past, the ice sheet recovered and regrew, Smith said. “Further events arising more from the warming climate trend took things further, and started the widespread retreat we’re seeing today,” he told CNN.

Persons: Antarctica’s, Thwaites, Joshua Stevens, Julia Wellner, that’s, ” Wellner, you’re, James Smith, “, ”, Smith, ” Thwaites, Jeremy Harbeck, NASA Ted Scambos, Martin Truffer, Truffer, — Organizations: CNN —, National Academy of Sciences, El, West, NASA, Observatory, University of Houston, CNN, British Antarctic Survey, University of Colorado Boulder, University of Alaska Locations: West Antarctica, Florida, Pine, Antarctica, University of Alaska Fairbanks, “

☆ Scientists drilled an ice core from Antarctica and were alarmed by what they found
▼ + stars: | 2024-02-08 | by ( Laura Paddison | ) edition.cnn.com time to read: +6 min

CNN —Evidence from a 2,000-foot-long ice core reveals that the West Antarctic Ice Sheet shrank suddenly and dramatically around 8,000 years ago, according to new research — providing an alarming insight into how quickly Antarctic ice could melt and send sea levels soaring. Map showing the location of the Skytrain Ice Rise, part of the Ronne Ice Shelf, from where the ice core was taken. The ice core analyzed in the study was drilled from Skytrain Ice Rise located at the edge of the ice sheet, near the point where the ice starts to float and become part of the Ronne Ice Shelf. Inside the drilling tent at Skytrain Ice Rise, scientists preparing the drill for its next drop into the borehole. University of Cambridge/British Antarctic SurveyInsulated boxes full of ice cores being loaded into the Twin Otter aircraft, Skytrain Ice Rise, Antarctica.

Persons: Eric Wolff, “ We’ve, we’ve, Wolff, Ted Scambos, “, that’s, ” Wolff, Isobel Rowell, ”, David Thornalley, Thwaites, Scambos Organizations: CNN, West, Empire, Nature, University of Cambridge, University of Colorado, Ronne Ice Shelf, University of Cambridge / British Antarctic Survey, Ronne, Shelf, Twin, British Antarctic Survey, University College London Locations: Antarctica, University of Colorado Boulder, West Antarctica

☆ Climate change: Rapid melting of West Antarctica ice now 'unavoidable,' study finds
▼ + stars: | 2023-10-23 | by ( Rachel Ramirez | ) edition.cnn.com time to read: +5 min

CNN —Rapid melting of West Antarctica’s ice shelves may now be unavoidable as human-caused global warming accelerates, with potentially devastating implications for sea level rise around the world, new research has found. Even if the world meets ambitious targets to limit global heating, West Antarctica will experience substantial ocean warming and ice shelf melting, according to the new study published Monday in the journal Nature Climate Change. They act like buttresses, helping hold ice back on the land, slowing its flow into the sea and providing an important defense against sea level rise. While there has been growing evidence ice loss in West Antarctica may be irreversible, there has been uncertainty about how much can be prevented through climate policies. “The thing that’s depressing is the committed nature of sea level rise, particularly for the next century,” Scambos told CNN.

Persons: ”, Kaitlin Naughten, Naughten, ” Naughten, Ted Scambos, ” Scambos, Scambos, Tiago Segabinazzi Dotto, I’ve Organizations: CNN, British Antarctic Survey, University of Colorado Boulder, “, National Oceanography, Science Media Center Locations: West Antarctica, Antarctica

No matter how much the world cuts back on carbon emissions, a key and sizable chunk of Antarctica is essentially doomed to an “unavoidable” melt, a new study found. Researchers used computer simulations to calculate future melting of protective ice shelves jutting over Antarctica’s Amundsen Sea in western Antarctica. How much melting can still be prevented by reducing emissions?” said study lead author Kaitlin Naughten, an oceanographer at the British Antarctic Survey. In each case, ocean warming was just too much for this section of the ice sheet to survive, the study found. That part of Antarctica “is doomed,” said University of California Irvine ice scientist Eric Rignot, who wasn’t part of the study.

Persons: ”, Kaitlin Naughten, it’s, Naughten, Eric Rignot, Ted Scambos, ” Naughten, Moon, Kate Marvel, ” ___ Read, Seth Borenstein Organizations: West, British Antarctic Survey, University of California, ” University of Colorado, Associated Press, Data, Twitter, AP Locations: Amundsen, Antarctica, ” West Antarctica, University of California Irvine

☆ Antarctica has lost 8.3 trillion tons of ice since 1997, a new study found. That's enough to cover the contiguous US in 3 feet of water.
▼ + stars: | 2023-10-13 | by ( Seth Borenstein | Maiya Focht | Associated Press | ) www.businessinsider.com time to read: +5 min

AdvertisementAdvertisementAntarctic ice shelves lost about 8.3 trillion tons of ice in the last quarter-century — enough to cover the contiguous US in 3 feet of water. All told, Antarctic ice shelves lost about 8.3 trillion tons (7.5 trillion metric tons) of ice in the 25-year period, the study found. The largest of the Larsen ice shelves, Larsen C, has lost 1.8 billion tons (1.7 trillion metric tons) of ice, about one-eighth of its mass. The shelf has lost 70% of its mass since 1997 — about 4.1 trillion tons (3.7 trillion metric tons) — into the Amundsen Sea. The ice shelves on the east were growing slower than the shelves losing ice to the west.

Persons: —, Taylor Rains, Ted Scambos, Scambos, Benjamin Davison, Pauline Askin, " Davison, Davison, Larsen Organizations: Service, University of Colorado, University of Leeds, Reuters Locations: Antarctica, Greenland, Florida, Delaware, United Kingdom, Thwaites, Amundsen

All told, Antarctic ice shelves lost about 8.3 trillion tons (7.5 trillion metric tons) of ice in the 25-year period, the study found. The largest of the Larsen ice shelves, Larsen C, has lost 1.8 billion tons (1.7 trillion metric tons) of ice, about one-eighth of its mass. The shelf has lost 70% of its mass since 1997 — about 4.1 trillion tons (3.7 trillion metric tons) — into the Amundsen Sea. The ice shelves that grew were predominantly on the continent’s east side, where there’s a weather pattern isolates the land from warmer waters, Davison said. The ice shelves on the east were growing slower than the shelves losing ice to the west.

Persons: ”, Ted Scambos, Scambos, Benjamin Davison, ” Davison, “ Wordie, Davison, Larsen, ___ Read, Seth Borenstein Organizations: University of Colorado, University of Leeds, Twitter, AP Locations: Antarctica, Greenland, Delaware, United Kingdom, Thwaites, Amundsen

☆ A Look at How Much Less Antarctic Sea Ice There Is This Year
▼ + stars: | 2023-08-02 | by ( Delger Erdenesanaa | ) www.nytimes.com time to read: +1 min

It’s winter in the Southern Hemisphere, when ice typically forms around Antarctica. But this year, that growth has been stunted, hitting a record low by a wide margin. The sharp drop in sea ice is alarming scientists and raising concerns about its vital role in regulating ocean and air temperatures, circulating ocean water and maintaining an ecosystem crucial for everything from microscopic plankton to the continent’s iconic penguins. “This year is really different,” said Ted Scambos, a senior research scientist at the University of Colorado Boulder and an Antarctica expert at the National Snow and Ice Data Center. “It’s a very sudden change.”A continued decline in Antarctic sea ice would have global consequences by exposing more of the continent’s ice sheet to the open ocean, allowing it to melt and break off more easily, contributing to rising sea levels that affect coastal populations around the world.

Persons: ”, Ted Scambos, “ Organizations: Southern, University of Colorado, Data Locations: Antarctica, University of Colorado Boulder

☆ Antarctica is missing an Argentina-sized amount of sea ice – and scientists are scrambling to figure out why
▼ + stars: | 2023-07-30 | by ( Sophie Tanno | ) edition.cnn.com time to read: +5 min

Antarctic sea ice has fallen to unprecedented lows for this time of year. Every year, Antarctic sea ice shrinks to its lowest levels towards the end of February, during the continent’s summer. In mid-July, Antarctica’s sea ice was 2.6 million square kilometers (1 million square miles) below the 1981 to 2010 average. While natural climate variability affects the sea ice, many scientists say climate change may be a major driver for the disappearing ice. A lack of sea ice could also have significant impacts on its wildlife, including krill on which many of the region’s whales feed, and penguins and seals that rely on sea ice for feeding and resting.

Persons: Ted Scambos, ”, “, Scambos, ” Scambos, ’, Julienne, West, –, Thwaites, it’s Organizations: CNN, Northern, Data, University of Colorado, ”, Data Center, Southern Locations: Argentina, Texas , California, New Mexico , Arizona , Nevada , Utah, Colorado, University of Colorado Boulder, Antarctica

☆ Four alarming charts that show just how extreme the climate is right now
▼ + stars: | 2023-06-17 | by ( Rachel Ramirez | ) edition.cnn.com time to read: +8 min

Record high levels of carbon pollution in the atmosphere and record low levels of Antarctic ice. Several all-time heat records were also broken earlier this month in Siberia, as temperatures shot up above 100 degrees Fahrenheit. In 2022, the world’s oceans broke heat records for the fourth year in a row. In late February, Antarctic sea ice reached its lowest extent since records began in the 1970s, at 691,000 square miles. The decline in sea ice also poses severe harm to the continent’s species, including penguins who rely on sea ice for feeding and hatching eggs.

Persons: Brian McNoldy, vZ9eKEs22b, we’re, ” Jennifer Marlon, “ We’ve, – we’ve, Ted Scambos, “ We’re, Phil Reid, El, Climatologist Maximiliano Herrera, “, El Niño, ” Herrera, ” Scambos, Reid, Scambos, there’s, Rick Spinrad, ” Organizations: CNN, University of Miami Rosenstiel School of Marine, Yale School of, University of Colorado -, National Weather Service, Australian, of Meteorology, National Oceanic, Atmospheric Administration, Atlantic, NOAA, Scripps Institution of Oceanography, University of California, Industrial Locations: University of Colorado - Boulder, Canada, United States, Siberia, Central America, Texas, Louisiana, Puerto Rico, Asia, China, El, California, Pacific, San Diego

☆ Without climate change, these extreme weather events would not have happened
▼ + stars: | 2023-06-15 | by ( Rachel Ramirez | ) edition.cnn.com time to read: +13 min

People often want to know if an extreme weather event happened because of climate change, said Friederike Otto, climate scientist and co-lead of the World Weather Attribution initiative. And, more often than not, they are finding the clear fingerprints of climate change on extreme weather events. “We’re always going to have extreme weather, but if we keep driving in this direction, we’re gonna have a lot of extreme weather,” said Ted Scambos, a glaciologist at the University of Colorado-Boulder. Alexander Nemenov/AFP/Getty ImagesSiberian heat wave, 2020In 2020, a prolonged, unprecedented heat wave seared one of the coldest places on Earth, triggering widespread wildfires. A study from the journal Nature Climate Change found the period from 2000 to 2021 was the driest the West has ever been in 1,200 years, noting human-caused climate change made the megadrought 72% worse.

Persons: Friederike Otto, Otto, We’re, we’re, ”, Ted Scambos, Alexander Nemenov, Andrew Ciavarella, Kathryn Elsesser, San Salvador de la, Aitor De Iturria, ” Otto, Mamunur Rahman Malik, “, Fadel Senna, Debarchan Chatterjee, Saeed Khan, koalas, David Paul Morris, Lake Powell, Hurricane Ian, Ricardo Arduengo, Ian, Lawrence, Abdul Majeed, António Guterres Organizations: CNN, University of Colorado -, Getty, UK’s Met, Oregon Convention, Northern, World Health Organization, South Asia, Bloomberg, Western, Stony Brook University, Lawrence Berkeley National Laboratory ., UN Locations: University of Colorado - Boulder, Siberia, AFP, Oregon, Portland, Pacific, . Oregon, Washington, Canada, British Columbia, Canadian, Lytton, San Salvador de, Cercs, Catalonia, Spain, North America, Europe, China, Dahably, Wajir County, Kenya, Africa, Horn of Africa, Somalia, Ethiopia, Masseoud, Morocco, Portugal, Algeria, Kolkata, India, South Asia, South, Vietnam, Myanmar, Laos, Bangladesh, Thailand, New South Wales, Australia, Oroville, Oroville , California, States, California, Lake Oroville, Lake Mead, Lake, Nevada, Arizona, Mexico, Hurricane, Matlacha , Florida, Caribbean, Florida, Swat, Bahrain, Khyber Pakhtunkhwa, Pakistan, Sindh, Balochistan

☆ Fact Check-Study on Greenland warming does not contradict human-driven climate change
▼ + stars: | 2022-10-11 | by ( Reuters Fact Check | ) www.reuters.com time to read: +7 min

Rather, the study focused on a natural Pacific Ocean weather anomaly and its role in a recent slowdown of Greenland warming. The study’s finding that the slowdown in Greenland warming was driven largely by CP ENSO events doesn’t dispute anthropogenic climate change, Matsumura said. In fact, CP ENSO events have been projected to increase under global warming, Matsumura added, and a frequent occurrence of La Niña would likely accelerate Greenland warming (here), (here). Reuters Fact Check has previously addressed claims that short-term trends in Arctic ice cover undermine the idea that human-driven climate warming is a threat (here). A study by researchers in Japan that explains cooler Greenland summers with less ice melt over the past decade does not undermine the notion of human-driven climate change.

☆ Cel mai mare aisberg din lume s-a format în largul Antarticii. Acesta are o lungime de 175 de kilometri şi o lăţime de 25 de kilometri
▼ + stars: | 2021-05-20 | by ( Onixmedia Srl | ) diez.md time to read: +3 min

Cel mai mare aisberg din lume s-a format în largul Antarticii. Suprafața aisberguluiNoul aisberg are o lungime de 175 de kilometri şi o lăţime de 25 de kilometri. Prin comparaţie, insula Mallorca – o importantă destinaţie turistică a Spaniei, aflată în Marea Mediterană – are o suprafaţă de 3 640 de kilometri pătraţi. Statul american Rhode Island este şi mai mic în raport cu aisbergul A-76, având o suprafaţă de 2 678 de kilometri pătraţi. Cum a fost detectatA-76 a fost detectat în premieră de British Antarctic Survey şi confirmat de National Ice Center din statul american Maryland, folosind imaginile captate de misiunea Sentinel-1, lansată în cadrul programului spaţial Copernicus şi care constă în doi sateliţi cu orbite polare.

Persons: Copernicus, Ted Scambos, Boulder . Organizations: Reuters, Rhode Island, British Antarctic Survey, National Ice, Universitatea, Boulder . Aisbergurile Locations: Mallorca, Antarctica, AGERPRES, Spaniei, Rhode, Americii de Sud, american Maryland, Universitatea Colorado, Boulder

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