Climate change could spur stronger crop-wilting heatwaves that hit several of the world’s major grain producing regions simultaneously, potentially sparking food shortages and unrest, researchers warned Monday. Crop failures in one part of the world – from weather disasters or other causes – have traditionally been offset with increased trade from other areas with normal or above normal harvests, said climatologist Dim Coumou, a co-author of the study published in the journal Nature Climate Change. But a pattern of waves in the strong jet stream winds that circle high above the Earth’s surface, combined with hotter climate-driven temperatures, could threaten crops in multiple breadbasket regions at once, the study noted.
Reuters 9th Dec 2019 read more »
Patterns in the winds of the jet stream that circles the Earth can bring simultaneous heatwaves to breadbasket regions which provide up to a quarter of global crops, scientists have found. Extreme weather on this scale can significantly harm food production, making prices soar and fuelling social unrest. Western North America, western Europe, western Russia, Ukraine and the Caspian Sea region are especially susceptible. In a study published in the journal Nature Climate Change the researchers, from Germany, Australia and the US, explain how specific wave patterns in the jet stream strongly increase the chance of heatwaves occurring at the same time in different parts of the globe.
Climate News Network 10th Dec 2019 read more »