World Cup players face 'unseasonable heat due to climate change', experts warnÂ
has made temperatures more unbearable for footballers during the FIFA World Cup in , new research shows. According to climate organisation Climate Central, footballers are facing 'unseasonable heat' during the tournament because of global warming. On Tuesday alone, temperatures are 5.58F (3.1C) hotter than normal for this time of year across the whole country an increase made twice as likely by climate change. This increase will be felt by fans attending the match between England and Wales at the Ahmad bin Ali Stadium in Al Rayyan at 7pm GMT tonight. Fans have already been sweltering in Qatar's high temperatures over the past week, which have pushed past 86F (30C). Fortunately, when inside the World Cup stadiums, fans and players are being kept cool by specially-fitted technology that circulates cold air although this was , leaving players sweltering. In extreme temperatures, athletes are at risk of suffering from heat-stress disorders such as heat cramps, heat exhaustion or heat strokes. 'The stress of competing in extreme heat is already affecting more athletes around the world,' said Dr Andrew Pershing, director of climate science at Climate Central. 'Climate change is making outdoor sports riskier for both pros and the rest of us. 'It will keep getting even riskier, until net greenhouse gas emissions are halted and global temperatures stop rising.' The research was based on results from the , a free and publicly-available tool on Climate Central's website that shows how much global warming influenced a certain day's weather around the world. It compares how often a given temperature will occur in our current climate with the frequency of that temperature occurring in a climate without global warming. The index ranges from -5 to +5, with positive levels indicating temperatures that are becoming more likely due to climate change and negative levels indicating temperatures that are becoming less likely. For example, a Climate Shift Index level of +3 means the day's average temperature was made at least three times more likely than it would have been without the influence of human-caused climate change. This has been combined with a measure of how much hotter than normal a part of the world is on a given day, measured in degrees Fahrenheit or Celsius. So, according to the index, temperatures in the whole of Qatar on Friday, November 25 (the day of England's most recent match) were 3.42F (1.9C) hotter than normal an increase made twice as likely by climate change. Meanwhile, temperatures in Qatar today (November 29) are 5.5F (3.1C) hotter than normal two more times likely because of climate change. On some recent days, including Sunday (November 27), higher than average temperatures were made three times more likely due to climate change, in an area spanning Qatar's northeast. This area covers capital city Doha and Al Khor, a city in the country's north both of which are home to World Cup stadiums. Matches played in stadiums within this area on Sunday included Spain versus Germany and Belgium versus Morocco. This evening's match against England and Wales will be played at the Ahmad bin Ali Stadium in the city of Al Rayyan, which is just to the east of capital Doha. Climate Central also ranked World Cup nations' capital cities based on how much they are impacted by climate change. Mexico City was the 'World Cup winner' in this regard, ahead of runner-up Tehran (the capital of Iran), Accra (the capital of Ghana) and Brasilia (the capital of Brazil). Football fans will remember the controversy when FIFA moved the date of the 2022 World Cup back an extra six months due to the heat threat. It meant the World Cup would for the first time be played during winter rather than summer, due to the 'potential health risk' to players. Even though it's winter in Qatar, average temperatures hit 78F (26C) in November and 70F (21C) in December. Qatar therefore invested in cooling technology to bring the temperatures down and prevent potential heatstroke for players, officials and spectators. Using solar-powered energy, outside air is cooled and then distributed through grills in the stands and large pitch-side nozzles. The technology is now fitted in seven of eight Qatar 2022 stadiums, with the only exception Stadium 974 in Doha, which is fully-demountable and features natural ventilation due to its location near the sea.