Antarctica

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

As harsh weather occurs more frequently than scientists had anticipated, Antarctica’s sea ice levels are decreasing. At present, Antarctica is undergoing tremendous changes at previously unheard-of rates, as evidenced by frequent extreme occurrences. These include the recent autumn heatwave and circum-Antarctic summer heatwaves, both of which saw temperatures climb by up to 40C. Furthermore, the …

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Melting Antarctic ice predicted to cause rapid slowdown of deep ocean current by 2050

The world’s climate might change by 40% in just three decades, according to new research by Australian experts. According to experts behind this research, melting ice around Antarctica will trigger a rapid slowdown of a significant global deep ocean current by 2050, which could change the climate of the entire planet for centuries and hasten …

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Antarctic Researchers Report an Extraordinary Marine Heatwave That Could Threaten Antarctica’s Ice Shelves

The inexorable rise of ocean heat is now evident off the coast of West Antarctica, potentially disrupting critical parts of the global climate system and accelerating sea level rise. Research scientists on ships along Antarctica’s west coast said their recent voyages have been marked by an eerily warm ocean and record-low sea ice coverage—extreme climate …

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Global warming above 1.5C could trigger ‘multiple’ tipping points

There is a “significant likelihood” that multiple “tipping points” will be crossed if global temperatures exceed 1.5C above pre-industrial levels, new research suggests. Tipping points are thresholds that, if crossed, trigger large-scale and potentially irreversible changes in a particular part of the Earth system. The research, published in Science, reviews hundreds of academic studies to …

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Study: Four major climate tipping points close to triggering

Even if the world somehow manages to limit future warming to the strictest international temperature goal, four Earth-changing climate “tipping points” are still likely to be triggered with a lot more looming as the planet heats more after that, a new study said. An international team of scientists looked at 16 climate tipping points — …

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Previously Unknown Loss of Antarctic Ice Discovered by NASA – “Antarctica Is Crumbling at Its Edges”

New NASA research on Antarctica, including the first map of iceberg calving, doubles the previous estimates of loss from ice shelves and details how the continent is changing. In forecasting global sea level rise, the greatest uncertainty is how Antarctica’s ice loss will accelerate as the climate warms. Two studies led by researchers at NASA’s …

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New seafloor images off the West Antarctic Ice Sheet upend understanding of Thwaites Glacier retreat

The Thwaites Glacier in West Antarctica—about the size of Florida—has been an elephant in the room for scientists trying to make global sea level rise predictions. This massive ice stream is already in a phase of fast retreat (a “collapse” when viewed on geological timescales) leading to widespread concern about exactly how much, or how …

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Fate of ‘sleeping giant’ East Antarctic ice sheet ‘in our hands’ – study

Melting of the world’s biggest ice sheet would cause catastrophic sea level rise, but can be avoided with fast climate action The fate of the world’s biggest ice sheet rests in the hands of humanity, a new analysis has shown. If global heating is limited to 2C, the vast East Antarctic ice sheet should remain …

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Greta Thunberg delivers a climate warning at Glastonbury

Greta Thunberg has made a surprise appearance at Glastonbury, to warn of the dangers of climate change. The earth’s biosphere is “not just changing, it is destabilising, it is breaking down,” the 19-year-old told festival-goers from the Pyramid Stage. She criticised world leaders for “creating loopholes” to protect firms whose emissions cause climate change. “That …

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