Shocking Study Reveals ‘Sweaty Corn’ Intensifies U.S. Heatwaves, NOAA Experts Confirm

Corn Sweat: An Unexpected Heatwave Culprit

Barb Boustead, a meteorologist, vividly recalls her first encounter with the phenomenon of corn sweat upon moving to Nebraska. This late-summer humidity surge, caused by corn plants cooling themselves, was well-known among locals.

With climate change advancing, this hallmark of Midwestern summers may be exacerbating. The rising temperatures and increased atmospheric moisture are now allowing corn to be grown further north, expanding its footprint across the U.S.

The demand for ethanol has led farmers to plant more corn, adding to the humidity levels during peak summer. This is particularly evident in the Midwest where the cumulative effect of vast cornfields reaching their evapotranspiration stage is palpable.

Dennis Todey from the USDA’s Midwest Climate Hub highlights that while corn’s peak evapotranspiration occurs in July, soybeans contribute more vapor in August.

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Climate Change and Agricultural Practices

Climate change has undeniably altered the dynamics of agricultural practices. The extended growing seasons and warmer nights mean that plants, including corn, are losing more water through transpiration.

According to Lew Ziska of Columbia University, the correlation between increasing temperatures and heightened plant transpiration is clear. This process is especially significant in the context of biofuel production.

Ziska notes that over 40% of U.S.-grown corn is converted into ethanol, contributing to global biofuel production. This production has seen a consistent rise, barring the dip during the pandemic.

Factors influencing corn sweat include:

• Rainfall patterns
• Crop variety
• Growing methods

Midwestern Humidity: A Growing Challenge

The Midwest, being a significant corn-growing region, experiences a marked increase in humidity due to corn sweat. As the cornfields engage in evapotranspiration simultaneously, the resulting surge in moisture becomes noticeable.

Todey emphasizes the need for further research to understand the full extent of climate change’s impact on corn sweat. Variables like rainfall and crop management practices play crucial roles in this complex interaction.

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As more corn is planted to meet the ethanol demand, the resulting humidity levels contribute to the overall discomfort and heat stress experienced across the region.

Ziska succinctly puts it, “It shouldn’t come as a surprise to anyone that it’s been getting hotter. And as a result of it getting hotter, plants are losing more water.”

The Broader Implications

The repercussions of increased corn sweat extend beyond immediate discomfort. The additional humidity can exacerbate heatwaves, making them more intense and prolonged. This has significant implications for public health and agricultural productivity.

Understanding and mitigating the effects of corn sweat necessitates a multi-faceted approach. Researchers and farmers must collaborate to develop strategies that balance crop yield with environmental sustainability.

The interplay between climate change and agricultural practices underscores the importance of adaptive measures. As we continue to navigate these challenges, the insights gained will be crucial in shaping future policies and practices.

Ultimately, the phenomenon of corn sweat serves as a stark reminder of the intricate connections between our agricultural systems and the broader climate. Addressing these challenges head-on is essential for ensuring a sustainable future.

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