As greenhouse gas emissions rise, more venues will face conditions that professional athletes consider unfair or unsafe.
The number of places on Earth with the right combination of natural climate and geography for the Olympic Winter Games is already inherently limited. But as global temperatures rise from the burning of fossil fuels, the list is narrowing further. Factoring in the specific conditions that world-class skiers and snowboarders need to safely land tricks and have fair downhill races means very few past host cities will be able to reliably hold the games again by century’s end, a new study finds.
Previous studies have examined how global warming will affect the snowfall and temperature profiles of Winter Olympic sites—but they have not included the more specific needs of competitive athletes, says the new study’s co-author Daniel Scott, a climate scientist at the University of Waterloo in Ontario.
Sufficiently cold temperatures are also crucial for artificial snowmaking, which has been used in the Olympics since the 1980 games in Lake Placid, N.Y. Almost all of the snow at the Beijing games this year has been human-made because it is now the region’s dry season.
Four host locations—Chamonix, Sochi, the resort now called Palisades Tahoe in Olympic Valley, Calif., and Garmisch-Partenkirchen, Germany—are already unreliable according to the study’s standards, largely because of higher temperatures and wet snow conditions.
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