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Anthropogenic climate change has reduced drought recovery probabilities across the western US

Earth Sciences

Anthropogenic climate change has reduced drought recovery probabilities across the western US

E. L. Williams, J. T. Abatzoglou, et al.

This groundbreaking research by Emily L. Williams, John T. Abatzoglou, Katherine C. Hegewisch, and A. Park Williams reveals that anthropogenic climate change is reducing drought recovery probabilities in the western US, indicating longer drought durations and posing new challenges for water management and planning.

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Playback language: English
Abstract
This study investigates the impact of anthropogenic climate change on drought recovery probabilities in the western US. Using monthly Palmer Drought Severity Index (scPDSI) data from observations and climate models, the researchers find that drought recovery probability is significantly lower in recent decades (2000-2021) compared to the historical record (1901-1980). At least one-third of this reduction is attributed to anthropogenic climate change, primarily due to increased evaporative demand in non-winter months. Climate models project continued reduced recovery probabilities, implying longer drought durations and significant implications for water management and drought planning.
Publisher
Communications Earth & Environment
Published On
Oct 02, 2024
Authors
Emily L. Williams, John T. Abatzoglou, Katherine C. Hegewisch, A. Park Williams
Tags
climate change
drought recovery
Palmer Drought Severity Index
Western US
water management
evaporative demand
climate models

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