Atmospheric chaos has smell rising temperatures in Antarctica

Sales In early September, temperatures in the atmosphere over Antarctica have increased by over 35 ° C (63 ° F), while the wind speeds have Haved and Ozone Release suddenly stopped.

This kind of upheaval should only happen once every 20 years, says Martin Jucker at the University of New South Wales in Sydney, Australia. Instead, it seems that these events will be more frequent, with short -term disturbance that occurs last year, and more serious events in both 2019 and 2002.

Jucker says to have four of these events in less than a quarter of a century that alarming changes are underway in the global climate system.

Antarctic atmospheric temperatures should usually be -55 ° C (-67 ° F), target since September 5, they have unskitiness to -20 ° C (-4 ° F). Although this is still released, it means that wind speeds in the stratosphere – the polar vertebra – have fallen by half to a relatively quiet 100 kilometers per hour.

The warm -up does not yet constitute the formal definition of a Southen -stratospheric warming event, says Jucker. To hit this threshold, the winds had to cease all under a warming spikes lasting days, not a few weeks. However, he says that the implications for the southern hemisphere in the coming months could be meaningful.

Meteorologists in Australia, originally predicted a Weter-at-Normal Spring, are now warning potentially strong western over the Australian continent, leading to warmer, drier conditions.

The strange weather is also not over. A few scenarios may unfold in the coming weekends, says Jucker. The first is that the thriller whine resumes itself, and atmospheric temperatures return to the average trendline.

Alternatively, the anomaly could continue with some suggestions that the atmospheric temperature rise could increase an additional 20 ° C (36 ° F). As a result, northern latitudes in the southern hemisphere could be in for some wild weather.

While the cause of the anomaly has yet been scientifically established, Jucker says he is common sure that rising sea surface temperatures due to climate change, with between 1 ° C (1.8 ° F) and 2 ° C (3.6 ° F) in the Pacific, operate the current slowdown.

“We have also had these three massive typhoons in the Pacific, which is also due to sea surface temperatures,” says Jucker. “We have just had a very strange wede in the last two years, and it coincides with this very big jump in the sea temperature.”

Edward Doddridge at the University of Tasmania, Hobart, Australia, says the list of extreme changes at the bottom of the world will be longer. For the past few years there have been loss of sea ice, heat waves, widespread breeding errors in emperor pinging wine colonies and a dramatic slowdown in the Antarctic overturning circulation.

“Antarctica continues to surprising us,” he says. “While each of these changes relates in itself, my main concern is that we begin to see changes that not only strengthen themselves but also cascade through different parts of the Antarctic environment.

“Losses in sea ice in the summer improve the collapse of ice shelves and cause sea heating. These warmer seawater melts the remaining ice shelves faster, and this fresh water slows down the Antarctic ort -Harding circulation,” says Doddige.

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