California's hydroclimate shows enhanced variability caused by increasingly wet extremes during the 20th century

Tree-ring based hydroclimate reconstructions suggest that this statewide configuration has not been seen in the past 600 years

The 16th century shows enhanced hydroclimate variability driven by an increase in the magnitude of dry extremes, rather than wet extremes

Approximately three-fifths (59%) of global land area are projected to experience accelerated transition between dry and wet periods

Southern Asia suffers the most from severe transition between dry and wet periods

Enhanced precipitation and potential evapotranspiration variabilities contribute to the accelerated dry-to-wet transitions