OVERVIEW of the Trocadero venue, with the Eiffel Tower looming in the background while the Olympic flag is being raised, during the opening ceremony of the Paris 2024 Olympic Games. 鈥 FRANCOIS-XAVIER MARIT/POOL VIA REUTERS

PARIS 鈥 A leading sports ecologist believes the climate crisis has left organizers of mega-sporting events like the Olympics facing a truth uncomfortable enough to make them squirm.

Golf courses are sliding into the sea, snow is vanishing from alpine resorts, football grounds have flooded and wildfire smoke is choking athletes as rising temperatures disrupt events.

Some sports at the Paris Games have enacted extreme heat protocols as temperatures climb, while unseasonal high rains have led to the high pollution levels in the river Seine that forced a rescheduling of Tuesday鈥檚 men鈥檚 triathlon.

鈥(Climate change) is clearly having an effect,鈥 IOC spokesperson Mark Adams said on Tuesday.

鈥淲e have to live in the world that we have. As they say in sport, you have to play with what you have in front of you.鈥

Critics say extravaganzas like the Olympics, which will welcome an estimated 14 million visitors to Paris, contribute to climate change through a massive carbon footprint.

鈥淭hese competitions need to be smaller,鈥 said author and sports ecologist Madeleine Orr. 鈥淚t鈥檚 not athlete travel that鈥檚 doing the damage, it鈥檚 all the fans.

鈥淭hese are conversations I鈥檝e had with the International Olympic Committee (IOC), focusing on the local population for ticketing and reducing the size of venues.

鈥淪ome people squirm at that.鈥

ECONOMIC BENEFITS
On the other side of the scale is money.

All those visitors mean the Paris Games are projected to generate between 6.7 billion euros and 11.1 billion euros ($7.27 and $12.04 billion) in net economic benefits for the region.

The Paris organizing committee set a target of halving the carbon footprint of their Games compared to earlier editions, excluding Tokyo where spectators were banned due to COVID-19.

Paris is using a host of measures to achieve this, but the footprint is still an estimated 1.58 million metric tons of CO2 equivalent, according to its own calculations.

For comparison, a single ton of CO2 is equivalent to 138 meat-based meals or a one-way flight from Paris to New York.

鈥淚nstead of a 60,000-seat stadium for football, say 鈥榳e鈥檙e playing in smaller facilities and there鈥檚 10,000 tickets鈥,鈥 added Ms. Orr, whose book Warming Up, How Climate Change is Changing Sport was published in May.

鈥淚t鈥檒l still be an awesome environment for athletes. It鈥檒l look like a full crowd for the cameras. It just won鈥檛 be a tourism spectacle.鈥

Meanwhile, the future of the Games themselves are at risk.

鈥淚f we鈥檙e talking winter sports, (climate change) is an existential crisis,鈥 Orr said.

鈥淚f we鈥檙e talking summer sports, we鈥檙e still within the window of adaptation. The problem is there鈥檚 very little attention being paid.鈥

The IOC would disagree.

Its 鈥渞educe, compensate, influence鈥 climate commitment includes a target of 50% reduction of carbon emissions by 2030, compensating more than 100% of the residual emissions and encouraging stakeholders and fans to act against climate change.

鈥楧RAMATIC IMPACT鈥
It is also considering introducing a rotation of the winter Games among a permanent pool of host nations who have a reliable winter climate needed for the Olympics.

鈥淲e need to address very quickly this dramatic impact of climate change on winter sport,鈥 IOC President Thomas Bach said last October. 鈥淏y mid-century, there will remain practically just 10-12 (countries) who could host these snow events.鈥澛

On the summer side, World Athletics president Sebastian Coe warned that athletes are suffering, with 75% reporting competition or training had been affected by climate change.

鈥淭here are countries in our federation that will probably not be in existence in the next 20 years because of rising sea levels,鈥 Mr. Coe said last year.

The heat could cause issues at endurance events in Paris, particularly once athletics gets underway on Thursday.

The World Championships marathons in Doha in 2019 started at midnight to avoid the searing Middle East heat and still 46 runners did not finish.

Ms. Orr said heat was a threat to sport all over the world and an 鈥渆xistential crisis鈥 in India, Pakistan, Bangladesh and parts of China.

UNCONTROLLED WILDFIRES
North America is also reeling. Hundreds of uncontrolled wildfires are burning across western Canada, forcing the evacuation of thousands of residents.

The smoke from North American wildfires has wreaked havoc over the last few years, forcing the postponement of Major League Baseball games, a National Women鈥檚 Soccer League match and an indoor WNBA game to protect the fans and teams.

Christopher Blevins, who was 13th in Monday鈥檚 Olympic mountain bike race, said checking an air quality app on his phone had become routine.

鈥淭here鈥檚 typically a fire somewhere on the West Coast and as an endurance athlete air quality is obviously important,鈥 said the American, an athlete spokesperson for the environmental group Protect our Winters.

鈥淚t鈥檚 just a new reality,鈥 he added. 鈥淚t鈥檚 not just sports, it relates just as much to someone who wants to enjoy the outdoors, go for a hike in the park.鈥

Canadian rower Jennifer Casson recalled training under the 鈥渁pocalyptic鈥 red sky caused by Canada鈥檚 wildfires, and the algae bloom on Vancouver Island鈥檚 Quamichan Lake being so dense that she could not see her oar below the surface.

鈥淎thletes care about the planet,鈥 said Casson, who is competing in her second Olympics in Paris.

鈥淲e rely on this planet to do our sport, and I don鈥檛 need to be an expert to know that it鈥檚 getting frickin鈥 hot outside and I can鈥檛 breathe.鈥 鈥 Reuters