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Scientists are raising alarms about the risk of simultaneous crop failures occurring in multiple regions across the globe as a result of human-driven climate change, a catastrophe that poses an underestimated threat to the global food supply, reports a new study.
Using sophisticated climate models, researchers zeroed in on the effects of the jet stream, a system of rapidly flowing winds in the atmosphere, on heat extremes around the world. The results revealed that “meandering” jet stream patterns can produce weather anomalies in some of the most important crop-producing lands on Earth, an ominous signal that “synchronized” harvest collapses could occur in the future.
Climate change, which is driven by human consumption of fossil fuels, is placing enormous new pressures on humans and other lifeforms on the planet. In particular, rising temperatures are fueling more intense extreme weather events, such as heatwaves, droughts, floods, wildfires, and storms, all of which have adverse effects on food production worldwide. Given that disruptions to the global food supply can be deadly, especially for import-reliant nations, scientists have been galvanized to better understand the complex risks that climate change poses to global crop yields.
To that end, scientists led by climate scientist Kai Kornhuber from Columbia University’s Lamont-Doherty Earth Observatory set out to study meandering jet streams, which are especially wavy wind patterns in the sky that have remained a wild card in climate and crop models.
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Image: skaman306 via Getty Images
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James' World 2 
Jul 24, 2023 @ 11:12:59
The issue that needs attention globally
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Jul 24, 2023 @ 13:22:08
True!
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