US sees ‘alarming’ increase in combined heatwaves and droughts 

Trees are ablaze from the Brattain Fire in the Fremont National Forest near Paisley, Oregon, U.S., September 19, 2020. REUTERS/Adrees Latif - RC212J98TFVQ

Results show that dry-hot extremes have increased in frequency across the western United States. Image: REUTERS/Adrees Latif

Daisy Dunne
Science Writer, Carbon Brief
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Crop failure due to drought, Nebraska, USA
Crop failure due to drought, Nebraska, USA Image: Inga Spence / Alamy Stock Photo.
Frequency of dry-hot extremes across the US in 1943-67 (left), 1968-92 (middle) and 1993-2017 (right). Results are shown for 25-year extremes (top), 50-year extremes (middle) and 75-year extremes (bottom). Colour indicates scale of increase. C
Frequency of dry-hot extremes across the US in 1943-67 (left), 1968-92 (middle) and 1993-2017 (right). Image: Alizadeh et al. (2020).
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