Fig. 7: Large-scale atmospheric and oceanic drivers of dry periods.
From: Past megadroughts in central Europe were longer, more severe and less warm than modern droughts
a Observed50 summer scPDSI averaged over the 1971–1976 period; (b) as in (a) but for the 1964–1968 period; (c) The winter SST anomaly51 computed as the difference between the period (1971–1976) and (1964–1968); as in c) but for the winter gepotential height and wind (vectors) at 500 mb level (Z500)52. The hatching in (c) highlights significant values at a confidence level of 95%. Units: (c) SST (°C) and (d) Z500 (m).
