It only takes a fraction of a second to sustain a severe burn. On the hottest days, asphalt and concrete can reach surface temperatures as high as 82 degrees Celsius (180 degrees Fahrenheit), according to Dr. Kevin Foster, director of the Arizona Burn Center in Phoenix.
After the United States National Weather Service stated the city had high temperatures above 43°C (115°F) for 30 consecutive days in July, forecasters predict another heat wave in Phoenix this week. High temperature records have fallen across Europe this summer, and big heat waves are anticipated to last into August across parts of the world.
Read also Climate Change Brings the Impact of Heat Waves Hitting the Seabed
Doctors have treated multiple patients who sustained burns from falling on the ground or touching surfaces that were significantly hotter than the measured air temperature in Phoenix as a result of the high temperatures. Surface temperatures influence how hot the surrounding area becomes and pose a health risk during high heat events.
During heat waves, surfaces exposed to the sun’s rays absorb and reflect a huge quantity of solar energy, causing their temperatures to rise considerably. The heat from these warm surfaces is subsequently transferred to the surrounding air, raising the overall air temperature. While some permeable and moist surfaces absorb less heat, such as grass or soil, other construction materials, such as asphalt or concrete, can absorb up to 95% of the sun’s energy, which is then radiated back into the surrounding atmosphere.
When the thermometer reads 38°C (100°F) during the day, this temperature refers to air temperature, which meteorologists typically measure more than a metre (many feet) above the surface. Surfaces such as asphalt or cement, however, can achieve temperatures higher than 65°C (149°F) at those temperatures, causing skin burns. It is critical to be aware of these surface temperatures and take appropriate precautions to avoid damage.
Source: reuters.com
