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☆ A23a iceberg seen with striking arches and cavernous hollows as it floats away from Antarctica
▼ + stars: | 2024-01-17 | by ( Jack Guy | ) edition.cnn.com time to read: +2 min

CNN —Erosion has carved huge arches and cavernous hollows into the world’s largest iceberg as it floats through the ocean away from Antarctica, spectacular new photos show. The A23a iceberg is being gradually eroded as it moves further north of Antarctica and encounters milder air and warmer ocean temperatures. A23a is currently the largest iceberg in the world. Richard Sidey/Eyos ExpeditionsThe iceberg is about 400 meters (1,312 feet) thick, and almost 4,000 square kilometers (1,544 square miles) in area. Last February, Antarctic sea ice reached its lowest extent since records began, at 691,000 square miles.

Persons: A23a, Ian Strachan, Richard Sidey, Amy Woodyatt Organizations: CNN, EYOS Expeditions, EYOS, Ronne, Eyos Locations: Antarctica, London, Weddell, Los Angeles

☆ ‘It’s game on’: The world’s largest iceberg is on the move. Scientists explain why it matters
▼ + stars: | 2023-12-06 | by ( Sam Meredith | ) www.cnbc.com time to read: +6 min

"It's just astonishingly big and it's a reminder of how much risk we're at from sea level rise." "Antarctica has historically been quite a small contributor to sea level rise, but it is growing, and it is taking up a bigger and bigger share of the sea level rise that we see every year," he added. "So, it's a symbol of the growing dominance of Antarctica in the sea level rise equation." This temperature threshold is widely recognized as crucial because so-called tipping points become more likely beyond this level. Tipping points are thresholds at which small changes can lead to dramatic shifts in Earth's entire life support system.

Persons: Robbie Mallett, A23a, Mallett, Mallet, That's, Gail Whiteman, Taalas, Hollie Adams, NASA Modis Organizations: United Arab Emirates, Continent, University of College London, CNBC, United, NASA, World Meteorological Organization, University of Exeter, WMO, Expo, Bloomberg, Getty Images Bloomberg, Getty Locations: DUBAI, United Arab, Antarctica, New York City, United Arab Emirates, South Georgia, Dubai, COP28, Green

☆ The world's largest iceberg is now sailing away from Antarctica
▼ + stars: | 2023-12-04 | by ( Sean Conlon | ) www.cnbc.com time to read: 1 min

Share Share Article via Facebook Share Article via Twitter Share Article via LinkedIn Share Article via EmailThe world's largest iceberg is now sailing away from AntarcticaRecent satellite images show an iceberg roughly three times the size of New York City floating past the northern tip of the Antarctic Peninsula. According to the British Antarctic Survey, the berg named A23a is now likely to be swept along by the Antarctic Circumpolar Current into 'iceberg alley.' Once hosting a Soviet research station, A23a split from West Antarctica's Filchner-Ronne Ice Shelf in 1986.

Persons: berg, A23a, Antarctica's Organizations: British Antarctic Survey, Antarctic, Ronne Ice Shelf Locations: Antarctica, New York City, Soviet

LONDON (AP) — Britain's polar research ship has crossed paths with the largest iceberg in the world — a “lucky” encounter that enabled scientists to collect seawater samples around the colossal berg as it drifts out of Antarctic waters, the British Antarctic Survey said Monday. It began drifting in recent months, and has now moved into the Southern Ocean, helped by wind and ocean currents. Scientists say it is now likely to be swept along into “iceberg alley” — a common route for icebergs to float toward the sub-Antarctic island of South Georgia. What we don’t know is what difference particular icebergs, their scale, and their origins can make to that process," she said. The British Antarctic Survey said its findings will help improve understanding of how climate change is affecting the Southern Ocean and the organisms that live there.

Persons: Sir David Attenborough, London —, ”, Andrew Meijers, “, A23a hasn’t, berg, Laura Taylor Organizations: British Antarctic Survey Locations: Antarctica, New York City, London, Weddell, South Georgia, British

[1/2] A satellite imagery of the world's largest iceberg, named A23a, seen in Antarctica, November 15, 2023. Courtesy of European Union/Copernicus Sentinel-3/Handout via REUTERS Acquire Licensing RightsNov 24 - The world's largest iceberg is on the move for the first time in more than three decades, scientists said on Friday. At almost 4,000 square km (1,500 square miles), the Antarctic iceberg called A23a is roughly three times the size of New York City. This will funnel it toward the Southern Ocean on a path known as "iceberg alley" where others of its kind can be found bobbing in dark waters. "Over time it's probably just thinned slightly and got that little bit of extra buoyancy that's allowed it to lift off the ocean floor and get pushed by ocean currents," said Marsh.

Persons: berg, Oliver Marsh, it's, Gloria Dickie, Olga Vyshnevska, William Maclean Organizations: European, Copernicus, REUTERS Acquire, Antarctica's, Ronne Ice Shelf, British Antarctic Survey, Antarctic, Thomson Locations: Antarctica, New York City, Soviet, Weddell, A23a, South Georgia, South Africa, London

☆ The world's biggest iceberg is on the move after 37 years, and it could threaten wildlife
▼ + stars: | 2023-11-24 | by ( Marianne Guenot | ) www.businessinsider.com time to read: +3 min

A23a, the world's biggest iceberg, is on the move 37 years after it broke off from Antarctica. Scientists will keep a close eye on it as it could threaten wildlife near South Georgia Island. AdvertisementThe world's biggest iceberg, covering about 1,500 square miles, is on the move. NASA WorldviewA23a lost its title of world's biggest iceberg in May 2021, but jumped ahead once again in October 2022, when the previous record-holder, A76, broke into three pieces, per the Guinness World Records website. A gentoo penguin with a newborn chick South Georgia.

Persons: —, A23a, Andrew Fleming Organizations: Ocean, Service, BBC, British Antarctic Survey, NASA, Records, Getty Locations: Antarctica, South Georgia, Weddell, Soviet, Georgia

☆ World’s biggest iceberg is on the move
▼ + stars: | 2023-11-24 | by ( Amy Woodyatt | ) edition.cnn.com time to read: +1 min

London CNN —The world’s biggest iceberg – more than twice the size of Britain’s capital city - is on the move after decades of being grounded on the seafloor in Antarctica. The huge mass of ice broke away from the Filchner-Ronne ice shelf in 1986, calved and grounded on the Antarctic’s Weddell Sea floor almost immediately. The iceberg, named A23a, is about 400 meters (1,312 feet) thick, and almost 4,000 square kilometers (1,544 square miles) in area. Greater London, by way of comparison, is 1,572 square kilometers (607 square miles). The iceberg, carried by ocean currents, will likely head eastward, and at its current rate is traveling five kilometers (three miles) a day.

Persons: Ella Gilbert, Oliver Marsh, A23a, Gilbert, Marsh Organizations: London CNN, Ronne, British Antarctic Survey, CNN Locations: Antarctica, Weddell, Greater London

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