Current:Home > InvestCharles Langston:North Greenland ice shelves have lost 35% of their volume, with "dramatic consequences" for sea level rise, study says -Wealth Empowerment Zone
Charles Langston:North Greenland ice shelves have lost 35% of their volume, with "dramatic consequences" for sea level rise, study says
Fastexy View
Date:2025-04-10 03:12:42
Scientists have Charles Langstonlong thought that the glaciers in North Greenland have been stable — a vital condition, as they contain enough ice to raise the sea level by nearly 7 feet. But a new study published on Tuesday found that ice shelves in the region have lost more than a third of their volume in the last half-century because of rising temperatures — and if it continues, scientists say there could be "dramatic consequences" for glaciers, and the planet.
Using thousands of satellite images and climate modeling, the study, published in Nature Communications, found that North Greenland's ice shelves "have lost more than 35% of their total volume" since 1978.
Ice shelves are the part of ice sheets — a form of glacier — that float over water. Three of those shelves in North Greenland have "completely" collapsed, researchers said, and of the five main shelves that remain, they said they have seen a "widespread increase" in how much mass they have lost, mostly due to the warming of the ocean.
One of the shelves, called Steenbsy, shrank to just 34% of its previous area between 2000 and 2013. Along with the loss of overall ice shelf volume, scientists said the area of floating ice decreased by more than a third of its original extent since 1978.
This observation could pose a major problem, as the Greenland ice sheet is the second-largest contributor to sea level rise. From 2006 to 2018, scientists noted that the single sheet was responsible for more than 17% of sea level rise in that period.
"The observed increase in melting coincides with a distinct rise in ocean potential temperature, suggesting a strong oceanic control on ice shelves changes," the study authors said. "...We are able to identify a widespread ongoing phase of weakening for the last remaining ice shelves of this sector."
Basal melting — the melting of ice from underneath — could also "be playing a complex and crucial role in thinning the ice shelf from below," study's authors said. And when that ice becomes too thin, it makes the structure more "prone to enhanced fracturing."
"This makes them extremely vulnerable to unstable retreat and ice shelf collapse if ocean thermal forcing continues to rise, which is likely to be the case in the coming century," they wrote, adding that the resulting discharge "could have dramatic consequences in terms of sea level rise."
Glaciers and ice sheets melt faster than they can gather new snow and ice as global temperatures increase — particularly in the oceans, which absorb 90% of warming on the planet. Having both warmer air and warmer ocean water amplifies the loss of ice.
Earlier this year, the World Meteorological Organization projected that Earth will have its hottest year ever recorded for at least one of the next five years, pushing the planet past 1.5 degrees Celsius of warming compared to pre-industrial times. In September, the European Union's Copernicus Climate Change Service reported that this summer was Earth's hottest three months on record.
- In:
- Climate Change
- Oceans
- Environment
Li Cohen is a social media producer and trending content writer for CBS News.
veryGood! (79264)
Related
- Meet 11-year-old skateboarder Zheng Haohao, the youngest Olympian competing in Paris
- Daddy of Em' All: the changing world of rodeo
- Ozzy Osbourne Makes Rare Public Appearance Amid Parkinson's Battle
- Sofia Richie Shares New Details About Scary Labor and Postpartum Complications Amid Welcoming Baby Eloise
- The 'Rebel Ridge' trailer is here: Get an exclusive first look at Netflix movie
- Madison LeCroy Found $49 Gucci Loafer Dupes, a Dress “Looks Flattering on Women of All Ages and More
- Jim Harbaugh heart condition: Why Chargers coach left game with 'atrial flutter'
- NFL Week 6 winners, losers: Bengals, Eagles get needed boosts
- Person accused of accosting Rep. Nancy Mace at Capitol pleads not guilty to assault charge
- Eagles coach Nick Sirianni downplays apparent shouting match with home fans
Ranking
- Civic engagement nonprofits say democracy needs support in between big elections. Do funders agree?
- 'A piece of all of us': Children lost in the storm, mourned in Hurricane Helene aftermath
- Atlanta to host Super Bowl 62 in 2028, its fourth time hosting the event
- Food Network Host Tituss Burgess Shares the $7 Sauce He Practically Showers With
- North Carolina justices rule for restaurants in COVID
- Dolphins quarterback Tua Tagovailoa expected to play again this season
- NFL Week 6 winners, losers: Bengals, Eagles get needed boosts
- Charlotte Tilbury Spills Celebrity-Approved Makeup Hacks You'll Actually Use, No Matter Your Skill Level
Recommendation
Off the Grid: Sally breaks down USA TODAY's daily crossword puzzle, Hi Hi!
Who won 'Big Brother 26'? Recapping Sunday's season finale
Permits put on hold for planned pipeline to fuel a new Tennessee natural gas power plant
Feel Free to Talk About These Fight Club Secrets
'Meet me at the gate': Watch as widow scatters husband's ashes, BASE jumps into canyon
Dolphins quarterback Tua Tagovailoa expected to play again this season
Jacksonville Jaguars trade DL Roy Robertson-Harris to Seattle Seahawks
Pumpkin weighing 2,471 pounds wins California contest