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

Nature climate change, 2022-03, Vol.12 (3), p.232-234 [Peer Reviewed Journal]

The Author(s), under exclusive licence to Springer Nature Limited 2022. ;ISSN: 1758-678X ;EISSN: 1758-6798 ;DOI: 10.1038/s41558-022-01290-z

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  • Title:
    Rapid intensification of the emerging southwestern North American megadrought in 2020–2021
  • Author: Williams, A. Park ; Cook, Benjamin I. ; Smerdon, Jason E.
  • Subjects: Anthropogenic factors ; Climate change ; Climate trends ; Drought ; Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Soil moisture
  • Is Part Of: Nature climate change, 2022-03, Vol.12 (3), p.232-234
  • Description: 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 been experiencing lower than average precipitation and higher temperatures since 2000. This emerging megadrought, spanning 2000–2021, has been the driest 22-year period since the year 800 and 19% of the drought severity in 2021 can be attributed to climate change.
  • Publisher: London: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 1758-678X
    EISSN: 1758-6798
    DOI: 10.1038/s41558-022-01290-z
  • Source: ProQuest Central
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