Drought in Southwestern North America is Second Worst in Last 1,200 Years
April 22, 2020
John Abatzoglou — from the Department of Geography — and his colleagues used modeling and tree ring data to analyze the drought in southwestern North Americathat has lasted through the 21st century. They found that the 2000-18 drought was the second driest 19-year period in the region in the last 1,200 years. Human-driven climate change explained almost 50% of the severity of the current drought, pushing an otherwise moderate drought toward being nearly the worst megadrought in the region since 800 CE.
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