A study published in Nature on Thursday highlights that the rapid decline of Antarctic sea ice may represent a crucial tipping point for the global climate.
The research, which analysed ice cores, ship logs, and observational data, found that “a regime shift has reduced Antarctic sea-ice extent far below its natural variability of past centuries, and in some respects is more abrupt, non-linear and potentially irreversible than Arctic sea-ice loss.”
Shrinking ice reduces solar reflection, accelerating global warming and weakening the Antarctic Overturning Circulation, which regulates ocean heat, nutrients, and weather patterns.
Nerilie Abram, the study's lead author noted, “Once we start losing Antarctic sea ice, we set in train this self-perpetuating process.”
The loss of ice is already affecting wildlife, including emperor penguins that breed on the ice and krill that feed below it. Warming surface waters are also diminishing phytoplankton populations that absorb large amounts of atmospheric carbon.
Even with efforts to reduce carbon dioxide emissions, the study warns that Antarctic sea ice loss may continue over centuries, emphasizing the urgent need for climate action.
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As typhoons hit Southeast Asia and Jamaica and Brazil recover from recent storms, delegates at Brazil’s COP30 summit are confronting how to help vulnerable communities cope with worsening climate extremes.
Britain must urgently prepare for global warming of at least 2 degrees Celsius above pre-industrial levels by 2050, its climate advisers said on Wednesday (15 October), warning the country is ill-prepared for extreme weather that is already occurring.
Wildfires have destroyed about a third of Namibia's Etosha National Park, a roughly 20,000 square-kilometre (7,722 square-mile) tourist destination known for its wildlife, the presidency said.
Juneau, Alaska, is on high alert as floodwaters from the Mendenhall Glacier threaten to reach record levels, forcing residents in vulnerable areas to evacuate immediately.
Iran’s Islamic Revolutionary Guard Corps (IRGC) has deployed one of its largest ballistic missiles at a newly unveiled underground base on Wednesday (3 February), just two days ahead of mediated nuclear talks with the United States in Muscat, Oman.
Winter weather has brought air travel in the German capital to a complete halt, stranding thousands of passengers as severe icing conditions make runways and aircraft unsafe for operation and force authorities to shut down one of Europe’s key transport hubs.
Storm Leonardo hit Spain and Portugal on Tuesday, forcing more than 11,000 people from their homes, after a man in Portugal died when his car was swept away by floodwaters and a second body was found in Malaga.
An attacker opened fire at the gates of a Shi'ite Muslim mosque in Islamabad on Friday before detonating a suicide bomb that killed at least 31 people in the deadliest assault of its kind in the capital in more than ten years.
Ukraine and Russia carried out a rare exchange of 314 prisoners on Thursday as U.S.-brokered talks in Abu Dhabi closed with a pledge to resume negotiations soon, offering one of the clearest signs of diplomatic movement in months.
Rivers and reservoirs across Spain and Portugal were on the verge of overflowing on Wednesday as a new weather front pounded the Iberian peninsula, compounding damage from last week's Storm Kristin.
Morocco has evacuated more than 100,000 people from four provinces after heavy rainfall triggered flash floods across several northern regions, the Interior Ministry said on Wednesday.
Greenland registered its warmest January on record, sharpening concerns over how fast-rising Arctic temperatures are reshaping core parts of the island’s economy.
Storm Kristin has left central Portugal with severe destruction, major power outages and a reconstruction bill that officials say could reach billions of euros.
Storm Kristin has killed at least five people and left more than 850,000 residents of central and northern Portugal without electricity on Wednesday (28 January), as it toppled trees, damaged homes, and disrupted road and rail traffic before moving inland to Spain.
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