As the climate warms, baseball players may be getting a boost from warmer temperatures – lower air density on hot days leads to more home runs
Baseball’s heaviest-hitting sluggers have been getting some help from climate change. New research finds hundreds of Major League home runs wouldn’t have made it over the wall without hotter temperatures, which reduce air density and lessen drag.at Dartmouth College in New Hampshire.
Mankin and his colleagues considered data on weather and hits from more than 100,000 Major League games played outdoors between 1962 and 2019.Using statistical methods, they isolated the effect of temperature from other variables, such as changes in training. They also analysed the trajectory of more than 220,000 balls recorded by high-speed cameras since 2015 to further isolate the effect of temperature.
They found an additional 1°C increase in the high temperature for a given day increased the number of home runs during a game by just under 2 per cent.
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