Fig. 3: Spatial projection of summer blocking and heatwaves.

a, b The multi-model-mean historical (1966–2005) frequency of blocking (a) and heatwaves (b). c, d The multi-model-mean frequency change, in SSP585 (2060–2099) minus historical, of blocking (c) and heatwaves (d, counting only the effect of blocking changes). Dots enclosed in grey contours in c denote regions where the changes are NOT statistically significant.