Tag Archives: Antarctica

‘Omen of the Future’: Off-The-Charts Hot Oceans Scare Scientists

After 2023 was the hottest year in human history, experts warn that 2024 “has strong potential to be another record-breaking year.”

By Jessica Corbett. Published 2-27-2024 by Common Dreams

Coral bleaching. Photo: blamethepeople/flickr

While global policymakers continue to drag their feet on phasing out planet-heating fossil fuels, scientists around the world “are freaking out” about high ocean temperatures, as they told The New York Times in reporting published Tuesday.

A “super El Niño” has expectedly heated up the Pacific, but Times reporter David Gelles spoke with ocean experts from Miami to Cambridge to Sydney about record heat in the North Atlantic as well as conditions around the poles.

Continue reading
Share Button

Antarctic Tipping Point That Occurred 8,000 Years Ago ‘Could Happen Again’

“We now have direct evidence that this ice sheet suffered rapid ice loss in the past,” said a Cambridge researcher.

By Jessica Corbett. Published 2-9-2024 by Common Dreams

Marguerite Bay is on the west side of the Antarctic Peninsula. (Photo: British Antarctic Survey)

As European Union scientists confirmed that last month continued a worrying trend of historically high temperatures, U.K. researchers released a study Thursday warning how fossil fuel-driven global heating could lead to catastrophic and rapid ice loss in Antarctica not seen for thousands of years.

The study, published by researchers at the British Antarctic Survey (BAS) and the University of Cambridge in Nature Geoscience, relies on an ice core from the West Antarctic Ice Sheet that is over 2,100 feet long.

Continue reading
Share Button

Study Warns Even With Emissions Cuts, West Antarctic Ice Sheet Melt ‘Unavoidable’

“It looks like we’ve lost control of melting of the West Antarctic Ice Sheet,” said one author. “The bright side is that by recognizing this situation in advance, the world will have more time to adapt to the sea-level rise that’s coming.”

By Jessica Corbett. Published 10-23-2023 by Common Dreams

A view from the ship of the edge of the Ronne Ice Shelf, the world’s second largest ice shelf located in the Weddell Sea in Antarctica. Photo: Ricarda Winkelmann/CC

Even if humanity dramatically reduces planet-heating pollution from fossil fuels, the West Antarctic Ice Sheet faces an “unavoidable” increase in melting for the rest of this century, according to a study published Monday in the journal Nature Climate Change.

The West Antarctic Ice Sheet is the continent’s largest contributor to rising seas and contains enough ice to increase the global mean sea level by over 17 feet, the study explains. Enhanced melting of ice shelves, “the floating extensions of the ice sheet, has reduced their buttressing and caused upstream glaciers to accelerate their flow” toward the Southern Ocean. Ice shelf melting could “cause irreversible retreat” of the glaciers.

Continue reading
Share Button

‘Absolutely Devastating News’: Antarctica Warming Quicker Than Models Projected

The new study’s lead author said that “it is extremely concerning to see such significant warming in Antarctica, beyond natural variability.”

By Jessica Corbett. Published 9-8-2023 by Common Dreams

Crumbling glacier in Antarctica. Photo: Pedro Szekely/flickr/CC

Antarctica is warming at about double the rate of the rest of the planet and far more quickly than widely cited models projected, according to a study published Thursday in the journal Nature Climate Change that swiftly alarmed scientists around the world.

“This is absolutely devastating news,” declared climate scientist and University College London professor emeritus Bill McGuire.

Continue reading
Share Button

Rapidly Melting Glaciers Threaten Collapse of Crucial Ocean Circulation Systems: Study

“It’s way faster than we thought these circulations could slow down,” said one researcher. “We are talking about the possible long-term extinction of an iconic water mass.”

By Julia Conley.  Published 3-30-2023 by Common Dreams

Rapidly melting ice in Antarctica could cause a drastic weakening of a crucial current deep in the ocean, with “impacts felt throughout the global ocean for centuries to come,” according to a study published on March 29, 2023. (Photo: Ronald Woan/Flickr/cc)

 
 

 

 

Scientists from the United States and Australia on Wednesday warned in a new study that the current rate of greenhouse gas emissions and the resulting rapid melting of Antarctic glaciers is placing a vital deep ocean current “on a trajectory that looks headed towards collapse” in the coming decades.

As Common Dreams has reported, Antarctic ice is melting at an unprecedented rate, and the melting is causing fresh water to enter the ocean—reducing the salinity and density which is needed to drive the “overturning circulation” of water deep in the world’s oceans.

Continue reading
Share Button

Temporarily Passing Paris Climate Targets Could ‘Significantly’ Raise Tipping Point Risk: Study

“To effectively prevent all tipping risks, the global mean temperature increase would need to be limited to no more than 1°C—we are currently already at about 1.2°C,” noted one scientist.

By Jessica Corbett  Published 12-23-2022 by Common Dreams

Fire in the Amazon Photo: Luísa Mota/flickr/CC

Surpassing the global temperature targets of the Paris climate agreement, even temporarily, could dramatically increase the risk of the world experiencing dangerous “tipping points,” according to research published Friday.

The Intergovernmental Panel on Climate Change (IPCC) defines tipping points as “critical thresholds in a system that, when exceeded, can lead to a significant change in the state of the system, often with an understanding that the change is irreversible.” Continue reading

Share Button

‘Wake-Up Call’: Antarctic Ice Shelf the Size of Los Angeles Has Collapsed

“While humans are killing humans, and governments are spending on weaponry as if there is no tomorrow, the environment is collapsing.”

By Andrea Germanos.  Published 3-25-2022 by Common Dreams

This satellite image taken by NASA on February 2022 shows The Conger/Glenzer (Bowman Island) ice shelf and associated fast ice pre-collapse.

Satellite imagery showing the recent “complete collapse” of the Conger Ice Shelf in East Antarctica sparked fresh alarm over the climate emergency on Friday.

“While humans are killing humans, and governments are spending on weaponry as if there is no tomorrow, the environment is collapsing—so that there will be no tomorrow,” said former Greek finance minister and Progressive International co-founder Yanis Varoufakis.

The collapse, as The Guardian and CNET reported Thursday, occurred around March 15. Continue reading

Share Button

‘Unthinkable’: Scientists Shocked as Polar Temperatures Soar 50 to 90 Degrees Above Normal

“With everything going on in the world right now, the dual polar climate disasters of 2022 should be the top story.”

By Brett Wilkins.  Published 3-20-2022 by Common Dreams.

Scientists expressed alarm as temperatures near both poles soared to 50°-90°F above normal in recent days. (Image: Climate Reanalyzer)

Scientists expressed shock and alarm this weekend amid extreme high temperatures near both of the Earth’s poles—the latest signs of the accelerating planetary climate emergency.

Temperatures in parts of Antarctica were 50°F-90°F above normal in recent days, while earlier this week the mercury soared to over 50°F higher than average—close to the freezing mark—in areas of the Arctic.

Stefano Di Battista, an Antarctic climatologist, tweeted that such record-shattering heat near the South Pole was “unthinkable” and “impossible.”

“Antarctic climatology has been rewritten,” di Battista wrote.

The joint French-Italian Concordia research station in eastern Antarctica recorded an all-time high of 10°F on Friday. In contrast, high temperatures at the station this time in March average below -50°F.

Jonathan Wille, a researcher studying polar meteorology at Université Grenoble Alpes in France, told The Washington Post that “this event is completely unprecedented and upended our expectations about the Antarctic climate system.”

“This is when temperatures should be rapidly falling since the summer solstice in December,” Wille tweeted. “This is a Pacific Northwest 2021 heatwave kind of event,” he added, referring to the record-breaking event in which parts of Canada topped 120°F for the first time in recorded history. “Never supposed to happen.”

Walt Meier, a senior research scientist at the National Snow and Ice Data Center in Boulder, Colorado, told USA Today that “you don’t see the North and the South [poles] both melting at the same time” because “they are opposite seasons.”

“It’s definitely an unusual occurrence,” he added.

As Common Dreams has reported, the Arctic has been warming three times faster than the world as a whole, accelerating polar ice melt, ocean warming, and other manifestations of the climate emergency.

“Looking back over the last few decades, we can clearly see a trend in warming, particularly in the ‘cold season’ in the Arctic,” Ruth Mottram, a climate scientist with the Danish Meteorological Institute, told the Post. “It’s not surprising that warm air is busting through into the Arctic this year. In general, we expect to see more and more of these events in the future.”

This work is licensed under Creative Commons (CC BY-NC-ND 3.0)
Share Button

‘Wake-Up Call’: NOAA Predicts One-Foot Sea-Level Rise by 2050

“This decade we’re in right now is one of the most consequential decades for our climate future,” said one scientist.

By Kenny Stancil.  Published 2-15-2022 by Common Dreams

Residents were evacuated from a flooded neighborhood in, Helmetta, a borough in Middlesex County, New Jersey after Tropical Storm Henri. Screenshot: My Central Jersey

Ocean levels along the U.S. coastline are projected to rise by an average of 10 to 12 inches over the next three decades, worsening the threat of flooding in dozens of highly populated cities, according to a new report released Tuesday by the National Oceanic and Atmospheric Administration and other federal agencies.

The additional foot of sea-level rise that millions in the U.S. are predicted to face by mid-century is equivalent to the amount experienced in the previous hundred years—a manifestation of the climate crisis that scientists attribute to unmitigated greenhouse gas (GHG) pollution driven primarily by the burning of fossil fuels. Continue reading

Share Button

Shell Slammed for Plan to Blast South African Coastline for Oil and Gas During Whale Season

“We cannot allow climate criminals, like Shell, to plunder in the name of greed,” said Greenpeace.

By Kenny Stancil.  Published 11-29-2021 by Common Dreams

Photo: Greenpeace Africa/Twitter

Environmentalists responded with outrage to reports that oil giant Shell plans to spend the next several months conducting underwater explosions to search for deep-sea oil and gas reserves off South Africa’s coastline—a move that threatens to worsen the fossil fuel-driven climate crisis, undermine the livelihoods of fishers, and harm marine life.

“The extraction [of oil and gas] would bring devastation to the at-risk marine life, to local fishers whose livelihoods depend on the natural ecosystems and fish stocks, and [to] the communities on the coast of the Eastern Cape,” Project 90 by 2030, a South African social and environmental justice organization, told Metro.co.uk. Continue reading

Share Button