VPD change (IMAGE)

University of Washington

VPD change

Caption

The research study calculated the percent change from the ’80s and ’90s to the 2010s in the nighttime vapor pressure deficit, a measure of the drying power of the air, during summer months. Nighttime conditions were much more conducive to drying in recent years, especially in California’s central valley and the Bitterroot-Blue Mountain region of Idaho and surrounding states.

Credit

Chiodi et al./Geophysical Research Letters

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