A relentless heat dome has engulfed the United States, pushing temperatures above 100°F and affecting nearly 200 million Americans. While climate patterns are largely to blame, an unexpected factor is intensifying the sweltering conditions: corn sweat.
What Is Corn Sweat?
Corn sweat, scientifically known as evapotranspiration, occurs when corn plants release moisture into the air during photosynthesis. This process cools the plants but increases humidity in the surrounding atmosphere, making the air feel even hotter.
Why Is It Making the Heatwave Worse?
The Midwest, a major corn-producing region, is experiencing some of the highest humidity levels due to vast cornfields. This added moisture traps heat, amplifying the effects of the already oppressive heat dome.
Who Is Most Affected?
States like Iowa, Illinois, and Nebraska are bearing the brunt of this phenomenon, with heat indices reaching dangerous levels. Vulnerable populations, including the elderly and those without air conditioning, are at heightened risk.
How Long Will This Last?
Meteorologists predict the heat dome will persist for at least another week, with little relief in sight. Nighttime temperatures are also staying unusually high, preventing natural cooling.
What Can Be Done?
Experts advise staying hydrated, avoiding strenuous outdoor activities, and checking on vulnerable neighbours. Urban areas are setting up cooling centres to help residents escape the worst of the heat.
While corn sweat is a natural process, its role in this extreme weather event highlights the complex interplay between agriculture and climate. As heatwaves become more frequent, understanding these connections will be crucial for future resilience.
