Rapid intensification of the emerging southwestern North American megadrought in 2020–2021

@article{Williams2022RapidIO,
  title={Rapid intensification of the emerging southwestern North American megadrought in 2020–2021},
  author={A. Park Williams and Benjamin I. Cook and Jason E. Smerdon},
  journal={Nature Climate Change},
  year={2022},
  volume={12},
  pages={232 - 234}
}
A previous reconstruction back to 800 ce indicated that the 2000–2018 soil moisture deficit in southwestern North America was exceeded during one megadrought in the late-1500s. Here, we show that after exceptional drought severity in 2021, ~19% of which is attributable to anthropogenic climate trends, 2000–2021 was the driest 22-yr period since at least 800. This drought will very likely persist through 2022, matching the duration of the late-1500s megadrought. Southwestern North America has… 

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