Scientists count huge melts in many protective Antarctic ice shelves. Trillions of tons of ice lost.
1 year, 2 months ago

Scientists count huge melts in many protective Antarctic ice shelves. Trillions of tons of ice lost.

Associated Press  

Four dozen Antarctic ice shelves have shrunk by at least 30% since 1997 and 28 of those have lost more than half of their ice in that time, reports a new study that surveyed these crucial “gatekeepers’’ between the frozen continent’s massive glaciers and open ocean. Of the continent’s 162 ice shelves, 68 show significant shrinking between 1997 and 2021, while 29 grew, 62 didn’t change and three lost mass but not in a way scientists can say shows a significant trend, according to a study in Thursday’s Science Advances. Ice shelves are floating extensions of glaciers that act “like the gatekeepers” and keep the larger glacier from flowing more quickly into the water, the study’s lead author said. All told, Antarctic ice shelves lost about 8.3 trillion tons of ice in the 25-year period, the study found.

Climate Ice Study Lost Trillion Davison Tons Shelves Ice Shelves  shelf  ice  huge  glaciers  tons  shelves  scientists  trillion  climate  lost  melts  sea  study  count  trillions  protective

History of this topic

Researchers create 3D model of melting glaciers using historical photographs from Antarctica
5 months, 2 weeks ago

Researchers create 3D model of melting glaciers using historical photographs from Antarctica

ABC  

In 1968, an aircraft flew over the Larsen B ice shelf on the edge of the Antarctic Peninsula. "The information that these images contain about such a remote and often inaccessible location is priceless," University of Wollongong PhD candidate Ryan North said. "After constructing an accurate 3D model of the landscape using more than 850 photos, I found the glaciers …

Antarctica, Earth’s largest refrigerator, is defrosting
8 months, 3 weeks ago

Antarctica, Earth’s largest refrigerator, is defrosting

The Economist  

Science & technology | Out of sight, out of mind Antarctica, Earth’s largest refrigerator, is defrosting The world must pay more attention to its southern pole Your browser does not support this video. Antarctic ice-sheet mass change, 2002-23 -6 -4 -2 0 2 Tonnes per square metre 60°S SOUTHERN OCEAN 500 km Larsen A and B ice shelves, collapsed in …

Greenland lost 20% more ice than previously estimated: Study
11 months ago

Greenland lost 20% more ice than previously estimated: Study

Live Mint  

Due to global warming, glaciers in Greenland are melting five times faster than 20 years ago, scientists from the University of Copenhagen revealed in November last year. According to a Reuters report, if the ancient ice sheet were to melt away completely, it would raise sea levels by at least 20 feet. The melting of Greenland’s ice sheet, the second-largest …

Greenland has lost more ice than previously thought: study
11 months ago

Greenland has lost more ice than previously thought: study

The Hindu  

Climate change has caused Greenland’s ice sheet to lose 20% more ice than previously thought, according to research published Wednesday that used satellite imagery to track the retreat of glaciers over the past four decades. Previous studies have found that about 5,000 gigatons of ice has been lost from the surface of the Greenland ice sheet in the past two …

Arctic warming threatens wider world with rising seas: Report
1 year ago

Arctic warming threatens wider world with rising seas: Report

Hindustan Times  

The Arctic experienced the warmest summer on record this year, contributing to extraordinary wildfires and melting glaciers while threatening the rest of the world with problems including higher sea levels, a U.S. report said on Tuesday. The report found that "irreversible climate harms caused by an overheating Arctic will continue to reverberate across North America and Eurasia Summer surface air …

Faster melting of West Antarctic ice sheet 'unavoidable’ even if emissions cut
1 year, 2 months ago

Faster melting of West Antarctic ice sheet 'unavoidable’ even if emissions cut

Hindustan Times  

The West Antarctic ice sheet is set to melt faster even if the world rapidly cuts emissions, according to a new study. But an increasing body of research shows that hotter oceans are likely causing the ice shelves around West Antarctica to destabilize, raising the specter of massive sea level rise. Without the shelves’ protection, more of the West Antarctic …

Humans may have lost control of West Antarctic Ice Shelf melting, study finds
1 year, 2 months ago

Humans may have lost control of West Antarctic Ice Shelf melting, study finds

The Independent  

Sign up to the Independent Climate email for the latest advice on saving the planet Get our free Climate email Get our free Climate email SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our privacy policy Humans “may have lost control” of the West Antarctic Ice Sheet – with inevitable melting …

Scientists track 'alarming' melt in Antarctic ice shelves
1 year, 2 months ago

Scientists track 'alarming' melt in Antarctic ice shelves

The Hindu  

Around 40% of Antarctica's ice shelves have significantly shrunk over the last 25 years, scientists said on Thursday, in findings the European Space Agency said were "alarming". The melting saw 71 of Antarctica's 162 ice shelves lose mass from 1997 to 2021 - of which 68 posted a "statistically significant" reduction, according to the study published in the journal Science …

Seven worst years for polar ice sheet melting occurred in past decade: study
1 year, 8 months ago

Seven worst years for polar ice sheet melting occurred in past decade: study

The Hindu  

Scientists report that the seven worst years for polar ice sheets melting and losing ice have occurred during the past decade, with 2019 being the worst year on record. In their study, the researchers found that earth’s polar ice sheets lost 7,560 billion tonnes of ice between 1992 and 2020, which is equivalent to an ice cube that would be …

Greenland's melt goes into hyper-drive with unprecedented ice loss in modern times
1 year, 8 months ago

Greenland's melt goes into hyper-drive with unprecedented ice loss in modern times

ABC  

The Greenland and Antarctic ice sheets are now losing more than three times as much ice a year as they were 30 years ago, according to a new, comprehensive international study. Key points: From 1992 to 1996, the two ice sheets — which hold 99 per cent the world's freshwater ice — shrank by more than 100 billion tonnes a …

‘Devastating’ melt of Greenland, Antarctic ice sheets found
1 year, 8 months ago

‘Devastating’ melt of Greenland, Antarctic ice sheets found

Associated Press  

The Greenland and Antarctic ice sheets are now losing more than three times as much ice a year as they were 30 years ago, according to a new comprehensive international study. “This is a devastating trajectory,” said U.S. National Snow and Ice Center Deputy Lead Scientist Twila Moon, who wasn’t part of the study. “These rates of ice loss are …

SCIENCE NOTEBOOK | Extent of Antarctic sea ice reached a record low in February
1 year, 9 months ago

SCIENCE NOTEBOOK | Extent of Antarctic sea ice reached a record low in February

The Hindu  

Published : Mar 09, 2023 10:40 IST - 1 MIN READ Scientists at the National Snow and Ice Data Center of NASA at the University of Colorado Boulder reported that Antarctic sea ice likely reached its minimum extent for 2023, at 1.79 million square kilometres on February 21. “Antarctica’s response to climate change has been different from the Arctic’s,” said …

Antarctica's 'Doomsday Glacier' is Melting. Here's Why You — Sitting 12,000 Km Away — Should Worry
1 year, 9 months ago

Antarctica's 'Doomsday Glacier' is Melting. Here's Why You — Sitting 12,000 Km Away — Should Worry

News 18  

Thwaites Glacier, often known as the “doomsday glacier,” is on the edge of collapsing, according to new assessments. The total collapse of the Thwaites might result in a sea level rise of more than two feet, devastating coastal cities around the world, explains the CNN report. The Thwaites is also acting as a natural dam to the surrounding ice in …

Antarctic sea ice hits new record low in 2023
1 year, 9 months ago

Antarctic sea ice hits new record low in 2023

The Independent  

Sign up to the Independent Climate email for the latest advice on saving the planet Get our free Climate email Get our free Climate email SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our privacy policy Antarctic sea ice has likely shrunk to a record low, US scientists announced on Monday, …

New cause of melting Antarctic ice shelves discovered
1 year, 11 months ago

New cause of melting Antarctic ice shelves discovered

The Independent  

Researchers have identified a process that may indicate ice shelves melting at an accelerating rate in the Antarctic. A study led by the University of East Anglia discovered that the instability of one ice shelf might affect other surrounding ice shelves, pushing it downstream. They also identified that a small ocean gyre - a system of circulating ocean currents - …

Antarctica's ice shelves could be melting up to 40% FASTER than we thought
2 years, 4 months ago

Antarctica's ice shelves could be melting up to 40% FASTER than we thought

Daily Mail  

Antarctica's ice shelves could be melting up to 40 per cent faster than we thought due to coastal ocean currents, a new study warns. The researchers say this narrow current causes warm water to melt Antarctica's ice shelves – floating platforms of ice around the Antarctic coastline. Antarctica's ice shelves could be melting up to 40 per cent faster than …

Satellite imagery shows Antarctic ice shelf crumbling faster than thought
2 years, 4 months ago

Satellite imagery shows Antarctic ice shelf crumbling faster than thought

Hindustan Times  

Antarctica's coastal glaciers are shedding icebergs more rapidly than nature can replenish the crumbling ice, doubling previous estimates of losses from the world's largest ice sheet over the past 25 years, a satellite analysis showed on Wednesday. The first-of-its-kind study, led by researchers at NASA's Jet Propulsion Laboratory near Los Angeles and published in the journal Nature, raises new concern …

Antarctic ice shelf is crumbling faster than ever
2 years, 4 months ago

Antarctic ice shelf is crumbling faster than ever

Live Mint  

Antarctica's coastal glaciers are shedding icebergs more rapidly than nature can replenish the crumbling ice, doubling previous estimates of losses from the world's largest ice sheet over the past 25 years, a satellite analysis showed on Wednesday. The first-of-its-kind study, led by researchers at NASA's Jet Propulsion Laboratory near Los Angeles and published in the journal Nature, raises new concern …

Antarctica is crumbling: Scientists find ice sheet thinning, headed for major disruption
2 years, 4 months ago

Antarctica is crumbling: Scientists find ice sheet thinning, headed for major disruption

India Today  

As climate change wreaks havoc on the planet, every corner of the world has been affected, including the frigid world of the Antarctic. And when ice shelves dwindle and weaken, the continent’s massive glaciers tend to speed up and increase the rate of global sea level rise,” JPL scientist Chad Greene, lead author of the calving study said in a …

Antarctic ice shelf is crumbling much FASTER than we thought, NASA reveals
2 years, 4 months ago

Antarctic ice shelf is crumbling much FASTER than we thought, NASA reveals

Daily Mail  

The Antarctic ice shelf is crumbling much faster than first thought, a NASA study has revealed, with 12 trillion tonnes of ice being lost over the past 25 years. Melting: The Antarctic ice shelf is crumbling much faster than first thought, a NASA study has revealed. In this 2016 photo the 200ft-tall front of the Getz Ice Shelf in Antarctica …

Some Antarctic ice shelves have GROWN in the last 20 years
2 years, 7 months ago

Some Antarctic ice shelves have GROWN in the last 20 years

Daily Mail  

Parts of Antarctica have actually gained ice during the last 20 years, new research reveals, despite the continent suffering significant loss due to global warming. During the late 20th century, high levels of warming in the eastern Antarctic Peninsula led to the collapse of the Larsen A and B ice shelves in 1995 and 2002, respectively. Parts of Antarctica have …

Antarctic sea ice reaches second lowest level in 44 YEARS
2 years, 8 months ago

Antarctic sea ice reaches second lowest level in 44 YEARS

Daily Mail  

Antarctic sea ice has reached its second lowest level in almost half a century, new satellite data reveals, as scientists warn that the melting of the West Antarctic Ice Sheet could cause global sea levels to rise by up to 10 feet. Scientists have revealed the first evidence that rising greenhouse gases have a long-term warming effect on the Amundsen …

Thinning Antarctica ice shelf collapses after heatwave
2 years, 8 months ago

Thinning Antarctica ice shelf collapses after heatwave

Al Jazeera  

The Conger Ice Shelf crumbled after temperatures in the East Antarctic surged to 40C above normal earlier this month. An East Antarctica ice shelf disintegrated this month following a period of extreme heat in the region, scientists have said. The March heatwave, with temperatures reaching 40C above normal in parts of East Antarctica, was tied to the atmospheric river phenomenon, …

Ice shelf the size of NYC collapses in previously stable East Antarctica
2 years, 8 months ago

Ice shelf the size of NYC collapses in previously stable East Antarctica

LA Times  

This satellite image provided by NASA, Aqua MODIS 12, on this month shows the main piece of C-37 close to Bowman Island. An ice shelf the size of New York City has collapsed in East Antarctica, an area long thought to be stable and not hit much by climate change, concerned scientists said Friday. “The Glenzer Conger ice shelf presumably …

Dramatic satellite pictures show rapid break-up of Antarctic ice shelf the size of Barbados
2 years, 10 months ago

Dramatic satellite pictures show rapid break-up of Antarctic ice shelf the size of Barbados

The Independent  

Sign up to the Independent Climate email for the latest advice on saving the planet Get our free Climate email Get our free Climate email SIGN UP I would like to be emailed about offers, events and updates from The Independent. Satellite images revealed 154 square miles of sea ice, on the Antarctic Peninsula, cracking into hundreds of smaller pieces. …

Ice shelf on Antarctic's doomsday glacier is CRACKING and is likely to break free within five years
3 years ago

Ice shelf on Antarctic's doomsday glacier is CRACKING and is likely to break free within five years

Daily Mail  

The front portion of the doomsday glacier in Antarctica has an 'alarming crack' that could lead to it breaking off in just five years. New data, released on Monday, shows warming oceans is causing the Thwaites Eastern Ice Shelf to lose its grip on the submarine shoal, or bank, that acts as a pinning point to hold it to the …

Iceberg nearly the size of Delhi brushes against Antarctic ice shelf
3 years, 4 months ago

Iceberg nearly the size of Delhi brushes against Antarctic ice shelf

India Today  

An iceberg, nearly the size of Delhi, has been floating in Antarctica's Weddell Sea, threatening to collide with the Brunt Ice Shelf that it first broke from earlier this year. Researchers said if the drifting iceberg hit the unstable ice shelf with severe force, it could have triggered the release of a new 1,700 sq km-sized iceberg. However, the iceberg …

Antarctic lake suddenly disappeared in 2019, scientists say
3 years, 5 months ago

Antarctic lake suddenly disappeared in 2019, scientists say

Daily Mail  

A huge ice-covered lake in East Antarctic disappeared in less than a week, potentially due to climate change, a new study reveals. Researchers used radar images to track the rapid melting event at the Amery Ice Shelf, which occurred in June 2019, during the Antarctic winter. Landsat 8 images over the Southern Amery Ice Shelf show the ice-covered lake before …

Satellite images reveal ice shelf protecting Antarctic glacier is on the verge of collapse
3 years, 6 months ago

Satellite images reveal ice shelf protecting Antarctic glacier is on the verge of collapse

Firstpost  

The floating ice shelf acts like a cork in a bottle for the fast-melting glacier and prevents its much larger ice mass from flowing into the ocean. The Pine Island Glacier’s ice shelf loss accelerated in 2017, causing scientists to worry that with climate change the glacier’s collapse could happen quicker than the many centuries predicted. “Pine Island and Thwaites …

Earth's Ice Sheets are Now in Worst-case Zone, 28 Trillion Tonnes Lost in Less Than 25 Years
3 years, 10 months ago

Earth's Ice Sheets are Now in Worst-case Zone, 28 Trillion Tonnes Lost in Less Than 25 Years

News 18  

If the climate crisis seems like a distant threat to humankind then a recent research might put things into perspective. The research says that between 1994 and 2017, we lost 28 trillion tonnes of ice that is equivalent to a sheet of ice 100 metres thick covering the whole of the UK. Through their research, the scientists found that the …

Earth has lost 28 trillion tonnes of ice between the years 1994 and 2017: study
3 years, 10 months ago

Earth has lost 28 trillion tonnes of ice between the years 1994 and 2017: study

Firstpost  

The rate at which ice is disappearing across the world matches “worst-case climate warming scenarios”, UK scientists have warned in new research. It surveyed 215,000 mountain glaciers around the globe, polar ice sheets in Greenland and Antarctica, ice shelves floating around Antarctica, and sea ice drifting in the Arctic and Southern Oceans. mage credit: Wikipedia “The ice sheets are now …

Climate crisis: Global ice loss is speeding up, study finds
3 years, 10 months ago

Climate crisis: Global ice loss is speeding up, study finds

The Independent  

Sign up to the Independent Climate email for the latest advice on saving the planet Get our free Climate email Get our free Climate email SIGN UP I would like to be emailed about offers, events and updates from The Independent. According to the study – the first survey of global ice loss using satellite data – there has been …

Warming shrinks Arctic Ocean ice to 2nd lowest on record
4 years, 3 months ago

Warming shrinks Arctic Ocean ice to 2nd lowest on record

Associated Press  

Ice in the Arctic Ocean melted to its second lowest level on record this summer, triggered by global warming along with natural forces, U.S. scientists reported Monday. This year’s melt is second only to 2012, when the ice shrank to 1.3 million square miles, according to the National Snow and Ice Data Center, which has been keeping satellite records since …

Massive chunk of Greenland's ice caps has broken off, falls into the sea; evidence of rapid climate change
4 years, 3 months ago

Massive chunk of Greenland's ice caps has broken off, falls into the sea; evidence of rapid climate change

Firstpost  

The ice came off a fjord called Nioghalvfjerdsfjorden and is around 110 square kilometres big. An enormous chunk of Greenland’s ice cap has broken off in the far northeastern Arctic, a development that scientists say is evidence of rapid climate change. Annual end-of-melt-season changes for the Arctic’s largest ice shelf in Northeast Greenland are measured by optical satellite imagery, the …

Two Antarctic glaciers are breaking up and it could have major consequences for sea level rise
4 years, 3 months ago

Two Antarctic glaciers are breaking up and it could have major consequences for sea level rise

CNN  

CNN — Satellite images show that two important glaciers in the Antarctic are sustaining rapid damage at their most vulnerable points, leading to the breaking up of vital ice shelves with major consequences for global sea level rise. Here you see a @NASA_Landsat 🛰️ time lapse of @AntarcticPIG showing how the shear margin is tearing apart pic.twitter.com/u7vRfFxcOH — Stef Lhermitte …

Dismay as huge chunk of Greenland’s ice cap breaks off
4 years, 3 months ago

Dismay as huge chunk of Greenland’s ice cap breaks off

Associated Press  

COPENHAGEN, Denmark — An enormous chunk of Greenland’s ice cap has broken off in the far northeastern Arctic, a development that scientists say is evidence of rapid climate change. Annual end-of-melt-season changes for the Arctic’s largest ice shelf in Northeast Greenland are measured by optical satellite imagery, the survey known as GEUS said. “We should be very concerned about what …

Greenland: A chunk of ice twice the size of Manhattan has broken off the ice shelf
4 years, 3 months ago

Greenland: A chunk of ice twice the size of Manhattan has broken off the ice shelf

CNN  

CNN — A 44-square-mile chunk of ice, about twice the size of Manhattan, has broken off the Arctic’s largest remaining ice shelf in northeast Greenland in the last two years, leaving scientists fearful over its rapid disintegration. “We should be very concerned about what appears to be progressive disintegration at the Arctic’s largest remaining ice shelf, because upstream … is …

Ice Shelves in Antarctica Risk Collapse and Climate Change is the Culprit
4 years, 3 months ago

Ice Shelves in Antarctica Risk Collapse and Climate Change is the Culprit

News 18  

A platform of ice surrounding Antarctica measuring more than 350,000 square miles is at risk of collapse as the effects of climate change threaten to destabilise it, a new study has shown. The floating ice shelves that extend from the world’s largest ice sheet into the sea could split if fractures on their surface are flooded by meltwater as the …

Satellite images show fractures in Antarctica’s ice shelves, risk collapse as the climate warms
4 years, 3 months ago

Satellite images show fractures in Antarctica’s ice shelves, risk collapse as the climate warms

Hindustan Times  

A platform of ice surrounding Antarctica measuring more than 350,000 square miles is at risk of collapse as the effects of climate change threaten to destabilise it, a new study has shown. Antarctica’s ice shelves face the risk of collapse The floating ice shelves that extend from the world’s largest ice sheet into the sea could split if fractures on …

Half of Antarctica's glacier-retaining ice shelves at risk of crumbling due to climate change
4 years, 3 months ago

Half of Antarctica's glacier-retaining ice shelves at risk of crumbling due to climate change

Firstpost  

The findings show that atmospheric warming is attacking ice shelves from above as well as warm ocean water at the surface. More than half the ice shelves ringing Antarctica that prevent huge glaciers from sliding into the ocean and lifting sea levels are at risk of crumbling due to climate change, researchers said Wednesday. “If the ice shelves fill up …

Antarctica Ice Shelves Vulnerable To Meltwater That Could Cut Ice 'like A Knife,' Study Finds
4 years, 3 months ago

Antarctica Ice Shelves Vulnerable To Meltwater That Could Cut Ice 'like A Knife,' Study Finds

News 18  

BUENOS AIRES: Meltwater could undermine the walls of ice holding back Antarctica’s glaciers, scientists reported on Wednesday, a finding that underscores concern about the potential for a significant sea level rise. Scientists fear that losing ice shelves to hydrofracturing will leave Antarctica’s ice sheets a more direct pathway to the ocean, which could accelerate ice loss and contribute to sea …

Record melt: Greenland lost 586 billion tons of ice in 2019
4 years, 4 months ago

Record melt: Greenland lost 586 billion tons of ice in 2019

Associated Press  

Greenland lost a record amount of ice during an extra warm 2019, with the melt massive enough to cover California in more than four feet of water, a new study said. After two years when summer ice melt had been minimal, last summer shattered all records with 586 billion tons of ice melting, according to satellite measurements reported in a …

Record Melt: Greenland Lost 586 Billion Tons of Ice in 2019, Enough to Cover California in 4 Feet of Water
4 years, 4 months ago

Record Melt: Greenland Lost 586 Billion Tons of Ice in 2019, Enough to Cover California in 4 Feet of Water

News 18  

Greenland lost a record amount of ice during an extra warm 2019, with the melt massive enough to cover California in more than four feet of water, a new study said. After two years when summer ice melt had been minimal, last summer shattered all records with 586 billion tons of ice melting, according to satellite measurements reported in a …

Greenland’s ice sheet melted faster than ever before in 2019, study says. That’s worrying news for coastal cities across the world
4 years, 4 months ago

Greenland’s ice sheet melted faster than ever before in 2019, study says. That’s worrying news for coastal cities across the world

CNN  

CNN — Greenland’s ice sheet melted more last year than any year previously recorded, according to a new study, in another sign of the devastating impacts of a warming planet. To put that in comparison, between 2003 and 2016 the ice sheet lost about 255 billion tons of ice on average – per year “We have documented another record loss …

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