Science, Space and Technology News 2023
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This composite map shows land areas that could face extreme heat if the planet continues to warm . The darker the color, the longer the projected exposure to extreme heat. Credit: Courtesy of Daniel Vecellio, Qinqin Kong, W. Larry Kenney and Matthew Huber; composite image by Dennis Maney, Penn State These regions would primarily experience high-humidity heat waves. Heatwaves with higher humidity can be more dangerous because the air cannot absorb excess moisture, which limits sweat evaporation from human bodies and moisture from some infrastructure, like evaporative coolers.
“As people get warmer, they sweat, and more blood is pumped to their skin so that they can maintain their core temperatures by losing heat to the environment,” Kenney said. “At certain levels of heat and humidity, these adjustments are no longer sufficient, and body core temperature begins to rise. This is not an immediate threat, but it does require some form of relief.
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