A study by University of Wisconsin–Madison scientists Michael Eggen and Mutlu Ozdogan, now online at Environmental Research Letters, looked at yields of sorghum, a crop related to corn that is prized for its drought resistance.
The study showed a paradoxical result: Even though climate change “will bring generally warmer and wetter seasons to the study area,” the report said, droughts early in the growing season “will likely have negative impacts on sorghum yield.”
That phenomenon is already visible in the years with a strong El Niño, the thermal cycle in the Pacific Ocean that affects weather worldwide. As the climate as a whole warms, these droughts are likely to become both more common and more intense in Ethiopia’s highlands.
The study had its roots in conversations that Eggen had in 2015 while working on a larger project on the relationship of agriculture to environment and climate in Ethiopia, a project led by Ozdogan, an associate professor of forest and wildlife ecology at UW–Madison.
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