Fig. 6: Effect of AMV phase on likelihood of end-of-century compound extremes.

a–c Decades exceeding typical end-of-century levels in several heat and drought stress excess metrics under AMV+ (dark dots) and AMV- (light dots), starting in 2030–2049. Each dot represents one decade over one grid cell. Percentages show decades that exceed end-of-century levels under each AMV phase, at grid-cell level. AMV is defined as the concurrent 10-year running mean of North Atlantic SSTs. Distances to typical end-of-century decades are calculated as the difference between each year excess values minus the decadal ensemble average over the period of 2090–2099, divided by the end-of-century average and transformed to percentage.