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Antarctic winter heatwave raises new climate alarm as temperatures soar 28 degrees above normal

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Scientists are raising fresh alarms after analysis confirmed that an unprecedented heatwave hit East Antarctica during the dead of winter in 2024, with temperatures soaring 28 degrees Celsius above average and remaining elevated for more than two weeks. The event, which occurred in July and August, was described as one of the most extreme temperature anomalies ever recorded on the continent.

New research published in Nature confirms that interior Antarctica is undergoing marked climate change, with 2024 ranking as the warmest year in NASA's 145-year climate record. Unlike the Arctic, which has experienced faster warming for decades, Antarctica was long considered more resilient to climate shifts. That assumption is now being challenged.

A report from the University of Southampton warned that the ocean may transition from a stabilizer of the world's climate to a powerful new driver of global warming. The loss of sea ice has already imposed severe breeding pressure on emperor penguins, which rely on stable sea ice for chick rearing, according to researchers at Sun Yat-sen University.

Climate scientists predict that 2026 could be the hottest year on record. The Copernicus report on Europe's 2025 climate showed record heatwaves from the Mediterranean to the Arctic, with glaciers shrinking and snow cover declining. British Columbia set records for peak May electricity demand during an early heatwave, and forecasters predict severe weather with a strengthening El Nino pattern.

The World Stroke Organization has also warned that climate change poses an escalating threat to brain health, with extreme heat increasing the risk of stroke. Researchers say integrated land planning could ease conflicts between food production, energy development, and biodiversity conservation worldwide as climate pressures intensify.

Source: Nature