Global warming is disrupting an Antarctic current system that life on Earth relies on
1 year, 9 months ago

Global warming is disrupting an Antarctic current system that life on Earth relies on

Salon  

The term "abyssal ocean" conjures up ominous images, and rightly so — the literal deep sea abyss is extremely dark, at or near freezing temperatures, and full of peril. Using a transient forced high-resolution coupled ocean–sea-ice model, they found that if climate change continues at its current pace, abyssal warming would "accelerate over the next 30 years." "We know that nutrients exported from the Southern Ocean in other current systems support about three quarters of global phytoplankton production – the base of the food chain," the report's co-author, Steve Rintoul from Australia's Commonwealth Scientific and Industrial Research Organisation, told CNN. "The main near-term risk is in relation to sea-level rise, which accelerates due to amplifying feedbacks when deep ocean warming increases at the ice margin," report co-author Matthew England told Salon by email.

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History of this topic

Past climate change ‘shifts ocean currents and winds in Southern Ocean’
2 weeks ago

Past climate change ‘shifts ocean currents and winds in Southern Ocean’

The Independent  

Sign up for our free Health Check email to receive exclusive analysis on the week in health Get our free Health Check email Get our free Health Check email SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our privacy policy Human-induced climate change is causing shifts in the world’s largest ocean …

Dwindling Antarctic sea ice driving more storms, study warns
4 weeks ago

Dwindling Antarctic sea ice driving more storms, study warns

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 Dwindling Antarctic sea ice is driving more storms in the Southern Ocean, a new study …

Melting sea ice in Antarctica causes ocean storms, scientists say
4 weeks ago

Melting sea ice in Antarctica causes ocean storms, scientists say

Raw Story  

The record-breaking retreat of Antarctic sea ice in 2023 has led to more frequent storms over newly exposed parts of the Southern Ocean, according to a study published Wednesday. Scientists know that the loss of Antarctic sea ice can diminish penguin numbers, cause ice shelves to melt in warmer waters, and impede the Southern Ocean from absorbing carbon dioxide. Using …

How climate change could be driving ‘killer’ cold outbreaks in oceans
9 months ago

How climate change could be driving ‘killer’ cold outbreaks in oceans

CNN  

CNN — It’s not just ocean heat that’s affecting marine life – new research shows extremely cold events are welling up and causing mass mortalities. But even as ocean temperatures climb, extremely cold upwelling events — when strong winds and ocean currents bring pockets of cold water up to the surface, replacing the warm water that was there — are …

On the cusp of climate talks, UN chief Guterres visits crucial Antarctica
1 year, 1 month ago

On the cusp of climate talks, UN chief Guterres visits crucial Antarctica

The Hindu  

On the cusp of the COP28 climate talks, U.N. Secretary-General Antonio Guterres visited frozen but rapidly melting Antarctica and said Thursday that intense action must be taken at the conference where countries will address their commitments to lowering emissions of planet-warming gases. He described the U.N. climate change conference that begins in Dubai next week as an opportunity for nations …

A rapidly melting Antarctica gets the attention of UN chief ahead of COP28 climate talks
1 year, 1 month ago

A rapidly melting Antarctica gets the attention of UN chief ahead of COP28 climate talks

Associated Press  

KING GEORGE ISLAND, Antarctica — On the cusp of the COP28 climate talks, U.N. Secretary-General Antonio Guterres visited frozen but rapidly melting Antarctica and said Thursday that intense action must be taken at the conference where countries will address their commitments to lowering emissions of planet-warming gases. He described the U.N. climate change conference that begins in Dubai next week …

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 …

Even frozen Antarctica is being walloped by climate extremes, scientists find
1 year, 5 months ago

Even frozen Antarctica is being walloped by climate extremes, scientists find

Associated Press  

Even in Antarctica — one of the most remote and desolate places on Earth — scientists say they are finding shattered temperature records and an increase in the size and number of wacky weather events. The continent “is not a static giant frozen in time,” they said, but instead feels climate change’s wrath and extremes “sporadically and unpredictably.” Anna Hogg, …

No quick fix to reverse ‘astonishing’ Antarctic sea ice loss: Scientists
1 year, 5 months ago

No quick fix to reverse ‘astonishing’ Antarctic sea ice loss: Scientists

Al Jazeera  

This year’s sea ice minimum is 20 percent lower than the average over the last 40 years, researchers say. There’s no quick fix to replacing this ice,” said Caroline Holmes, polar climate scientist at the British Antarctic Survey and one of the study’s co-authors. This year’s sea ice minimum is 20 percent lower than the average over the last 40 …

Even frozen Antarctica is being walloped by climate extremes, scientists find
1 year, 5 months ago

Even frozen Antarctica is being walloped by climate extremes, scientists find

LA Times  

Penguins walk on the shore of Bahia Almirantazgo in Antarctica on Jan. 27, 2015. The continent “is not a static giant frozen in time,” they said, but instead feels climate change’s wrath and extremes “sporadically and unpredictably.” Anna Hogg, a co-author on the paper and professor at the University of Leeds, said that their work illustrates complex and connected changes …

Antarctica's rapidly melting ice is in "unprecedented" territory
1 year, 5 months ago

Antarctica's rapidly melting ice is in "unprecedented" territory

Salon  

Antarctica's sea ice has melted so fast — and the Earth has remained so much warmer than usual — that scientists are sounding a global alarm. On July 19, the University of Maine's Climate Change Institute announced data showing that over the past year, the amount of Antarctic sea ice has shrunk by almost 2 million kilometers². Finally the act …

Deep ocean currents in Antarctica are slowing earlier than predicted
1 year, 7 months ago

Deep ocean currents in Antarctica are slowing earlier than predicted

The Hindu  

Antarctica sets the stage for the world’s greatest waterfall. This Antarctic “bottom water” then spreads north along the sea floor in deep ocean currents, before slowly rising, thousands of kilometres away. Our new research, published in the journal Nature Climate Change, uses real-world observations to decipher how and why the deep ocean around Antarctica has changed over the past three …

Melting Antarctic ice may strangle vital ocean currents
1 year, 9 months ago

Melting Antarctic ice may strangle vital ocean currents

Salon  

As Antarctic ice melts, all of that fresh water pours into the ocean, essentially diluting it by reducing its salinity. It found that the world is on the verge of a potentially catastrophic slowdown, which could have a devastating effect on climate change, marine ecosystems, and the stability of Antarctic ice. "Our modeling shows that if global carbon emissions continue …

Rising Antarctic ice melt will dramatically slow global ocean flows
1 year, 9 months ago

Rising Antarctic ice melt will dramatically slow global ocean flows

The Hindu  

Rapidly melting Antarctic ice is dramatically slowing down the flow of water through the world's oceans, and could have a disastrous impact on the global climate, the marine food chain and even the stability of ice shelves, new research has found. "That's stunning to see that happen so quickly," said Alan Mix, a paleoclimatologist at Oregon State University and co-author …

Rapidly melting Antarctic ice could affect oceans ‘for centuries’
1 year, 9 months ago

Rapidly melting Antarctic ice could affect oceans ‘for centuries’

Al Jazeera  

Scientists warn deep ocean water flows from the Antarctic could decline by 40 percent by 2050, threatening the collapse of circulation crucial for planetary systems. Rapidly melting Antarctic ice is dramatically slowing down the flow of water through the world’s oceans and could have a disastrous effect on global climate, the marine food chain, and even the stability of ice …

Melting Antarctic ice will slow down a major global deep ocean current by 40% by 2050
1 year, 9 months ago

Melting Antarctic ice will slow down a major global deep ocean current by 40% by 2050

Daily Mail  

Melting ice around Antarctica will spark a rapid slowdown of a major global deep ocean current by 2050 that could have devastating impacts on ocean health and the marine food web. Warning: Melting ice around Antarctica will spark a slowdown of a major global deep ocean current by 2050 that could have devastating impacts on ocean health and marine life …

SCIENCE NOTEBOOK | Extent of Antarctic sea ice reached a record low in February
1 year, 10 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 …

Antarctic sea ice hits new record low in 2023
1 year, 10 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, …

‘Extraordinary marine heatwave’ could threaten Antarctica’s ice shelves
1 year, 11 months ago

‘Extraordinary marine heatwave’ could threaten Antarctica’s ice shelves

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 There are signs of an “extraordinary marine heatwave” in the Antarctic, a scientist monitoring ocean …

Antarctica is crumbling: Scientists find ice sheet thinning, headed for major disruption
2 years, 5 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 sea ice reaches second lowest level in 44 YEARS
2 years, 9 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 …

Ocean temperatures ‘relentlessly increasing’ due to climate crisis
3 years ago

Ocean temperatures ‘relentlessly increasing’ due to climate crisis

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. “The ocean heat content is relentlessly increasing, globally, and this is a primary indicator of human-induced climate change,” said …

Concern grows over Atlantic Ocean ‘conveyor belt’ shutdown
3 years, 2 months ago

Concern grows over Atlantic Ocean ‘conveyor belt’ shutdown

Al Jazeera  

Effects of climate change are slowing a key ocean circulation system with immense consequences for Earth’s climate if it collapses. But the effects of anthropogenic climate change have diminished the flow of this vast conveyor belt system, known as the Atlantic Meridional Overturning Circulation, and recent scientific research suggests it may even be headed for collapse. “Whether it’s just linear, …

Arctic is warming faster than other parts of the world. Here's why
3 years, 7 months ago

Arctic is warming faster than other parts of the world. Here's why

Hindustan Times  

Human civilisation and agriculture first emerged about 12,000 years ago in the early Holocene. Effects of Arctic warming One of the most significant effects of Arctic amplification is the weakening of west-to-east jet streams in the northern hemisphere. The links between Arctic amplification, slowing jet streams, blocking highs and extreme weather events in the mid to high latitudes of the …

Climate change disrupts ocean mixing that helps store world's excess heat, CO2
3 years, 9 months ago

Climate change disrupts ocean mixing that helps store world's excess heat, CO2

Firstpost  

Climate change has wrought major changes to ocean stability faster than previously thought, according to a study published Wednesday, raising alarms over its role as a global thermostat and the marine life it supports. Climate change has disrupted ocean mixing, a process that helps store away most of the world’s excess heat and a significant proportion of CO2. Researchers also …

Ocean like no other: Southern Ocean’s rich ecology, significance for global climate
4 years, 1 month ago

Ocean like no other: Southern Ocean’s rich ecology, significance for global climate

Firstpost  

Every expedition reveals new species, some of which are potentially commercially valuable, and all of which are important parts of the Southern Ocean ecosystem. Here the ocean plays another crucial role in the global climate system by bringing relatively warm — and warming — Circumpolar Deep Water into contact with the ice fringing Antarctica. Annual thaw and freeze of sea …

What an ocean hidden under Antarctic ice reveals about the future of our planet's climate
4 years, 6 months ago

What an ocean hidden under Antarctic ice reveals about the future of our planet's climate

Firstpost  

Research shows that if warming exceeds 2℃, major ice shelves would collapse, releasing ice, lifting the sea level by up to three metres by 2300. There are indeed hidden ocean cavities around Antarctica, and our latest research explores how the ocean circulates underneath the continent’s ice shelves - large floating extensions of the ice on land that rise and fall …

Arctic ice melt is disrupting key ocean current, may alter climate in Western Europe: Study
4 years, 11 months ago

Arctic ice melt is disrupting key ocean current, may alter climate in Western Europe: Study

The Hindu  

Researchers have unravelled how an ocean water current, which plays a key role in keeping Western Europe warm, could be altered by an influx of unprecedented amounts of cold, fresh water from melting ice in the Arctic. According to the scientists, including those from NASA’s Jet Propulsion Laboratory in the US, a seawater current called the Beaufort Gyre keeps the …

Arctic Ocean may be ice-free for part of year by 2044, finds study
5 years, 1 month ago

Arctic Ocean may be ice-free for part of year by 2044, finds study

The Hindu  

Human-caused climate change is on track to make the Arctic Ocean functionally ice-free for part of each year starting sometime between 2044 and 2067, according to a study. Satellite observations show that since 1979, the amount of sea ice in the Arctic in September — the month when there is the least sea ice, before water starts freezing again — …

Antarctica may drive rapid sea-level rise under climate change: Study
5 years, 2 months ago

Antarctica may drive rapid sea-level rise under climate change: Study

India TV News  

Ice melt from Antarctica is likely to drive rapid and high sea-level rise due to global warming, according to a study that offers a forewarning of what to expect under human-driven climate change. Researchers from The Australian National University examined historical and new data from the 'last interglacial', which took place 125,000 to 118,000 years ago and saw sea levels …

Planet SOS: Dying oceans and the consequences for life on Earth
5 years, 3 months ago

Planet SOS: Dying oceans and the consequences for life on Earth

Al Jazeera  

Melting ice, rising seas, warming oceans – are we running out of time to stave off the worst effects of climate change? Planet SOS speaks to ice climatologist Jason Box from the Geological Survey of Denmark and Greenland, who has spent years witnessing the dramatic decline of Greenland‘s ice sheets. Al Jazeera’s environment correspondent Nick Clark also reports from South …

Antarctica’s ice is degrading faster than we thought, and there may be no way to stop the consequences
5 years, 6 months ago

Antarctica’s ice is degrading faster than we thought, and there may be no way to stop the consequences

CNN  

CNN — There are plenty of ominous indicators of the consequences of climate change, but few are more worrying to scientists than the ice sheets of Antarctica at our planet’s southern pole. In other words, even if climate change was magically reversed, it wouldn’t necessarily stop the dangerous and rapid rise in sea levels that could be triggered by unstable …

Sea ice in Antarctica is now shrinking, after decades of increases
5 years, 6 months ago

Sea ice in Antarctica is now shrinking, after decades of increases

CNN  

CNN — Remember when sea ice in Antarctica was increasing? After decades of gradual increases, Antarctic sea ice is now decreasing faster than that in the Arctic, according to new research based on 40 years’ worth of satellite data. “Sea ice also affects the polar ecosystem, including penguins and whales and seals, petrels and albatrosses, krill, and a whole range …

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