Antarctica’s heatwaves are a warning to humanity – and we have only a narrow window to save the planet | Climate scientists

Antarctica's sea ice levels are plummeting as extreme weather events happen faster than scientists predicted

Antarctica is currently experiencing dramatic changes at unprecedented rates, marked by repeated extreme events. These include circum-Antarctic summer heatwaves and an autumn heatwave last year, with temperatures soaring up to 40C above the average. Moreover, both last summer and this winter, sea ice extent has reached record lows. These changes have happened even faster than scientists predicted.

These changes coincide with a broader global pattern of extreme air and sea surface temperatures, wildfires, floods, disease and other events deeply impacting ecosystems and society. Scientists have warned society about global climate change and its impacts since the Intergovernmental Panel on Climate Change's first report in the early 1990s. The Antarctic community has done so repeatedly too. These warnings are now being realised.