Extended Data Fig. 6: ENSO interaction with atmospheric rivers.

Mann-Whitney tests indicating where El Niño and La Niña conditions are significantly different, where years are categorized based on NOAA’s threshold of MEI = ± 0.5. Years between -0.5 and 0.5 are considered neutral and not used for this comparison test. The compared variables are: DJF precipitation associated with atmospheric rivers (left), proportion of DJF precipitation associated with atmospheric rivers (center), and total DJF precipitation (right). Green regions show significantly different behaviors.