Nature Climate Change, Published online: 14 February 2022; doi:10.1038/s41558-022-01290-z
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.