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‘Snow guns’ spewing Beijing Olympics snow raise environment concerns

‘Snow guns’ spewing Beijing Olympics snow raise environment concerns

YANQING: Bright yellow turbines line the slopes of the Beijing Winter Olympics, spraying out the artificial snow needed for the Games to take place.

Chineseenvironmentweather
By AFP

Friday 31 December 2021, 03:30PM


Beijing 2022 will rely on pistes made with these “snow guns”. Photo: AFP

Beijing 2022 will rely on pistes made with these “snow guns”. Photo: AFP

Man-made snow has been used to varying degrees since the 1980 Winter Olympics in Lake Placid, New York.

But February’s Beijing Games will depend almost entirely on artificial snow because they are happening in one of the driest parts of China.

With just five weeks until the Games begin, organisers are racing to coat the pistes in high-quality snow - a vast and complex task that critics say is environmentally unsustainable.

The venues use automated snow-making systems that monitor air temperature and humidity to maximise production.

Fed by local reservoirs, about 300 turbines - known as “snow guns” - mix water with compressed air before propelling the droplets into the air to form snow.

Workers then use truck-like vehicles called “snowcats” to spread the snow onto the pistes and sculpt jumps and turns.

Venues must ensure the snow meets precise standards of depth, hardness and consistency.

“The biggest challenge for us is maintaining uniform snow quality,” said Li Xin, deputy chief of mountain operations at the National Alpine Skiing Centre in Yanqing, about 80 kilometres (50 miles) from Beijing.

Variations in the snow-making process “can cause snow quality to be too hard in some places and too soft in others, which could be dangerous for the athletes”, he told a press event at the site.

Water shortages

The stark white patches stand out vividly against Yanqing’s brown mountains, which see minimal natural snowfall.

An International Olympic Committee evaluation report said that Zhangjiakou and Yanqing - the Games zones hosting alpine skiing and snowboarding, among other outdoor events - “would rely completely on artificial snow”.

A 2020 study in science publication Nature warned that groundwater depletion in northern China was a “critical issue” and among the highest globally, due to intensive agricultural irrigation, rapid urbanisation, and a dry climate.

This has meant water shortages for millions of Beijing residents and the water supply is likely to worsen in the future, researchers said.

Organisers at the Winter Olympics say the snow-makers are powered by renewable energy and will not damage mountain ecosystems, while the water they use will return to local reservoirs as the snow melts in spring.

The equipment’s automated systems reduce the kind of human error that can lead to wastage, said Florian Hajzeri, the China general manager for TechnoAlpin, the Italian company that supplies the machines.

With resorts worldwide turning to artificial snow to operate smoothly through the winter, “no matter which Olympics, there will always be snow-making systems for all of the venues”, he told AFP.

But experts say the reliance on man-made snow undermines Beijing’s pledge to hold a “green” Games.

Using large quantities of power and resources to create snow in the water-scarce region is “irresponsible”, said Carmen de Jong, a geography professor at France’s University of Strasbourg.

“We could just as well hold the Olympics on the Moon or on Mars,” she said.

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