Fig. 3: Dipole-like dry-wet pattern over Europe.
From: Anthropogenic warming has exacerbated droughts in southern Europe since the 1850s

Spatial correlation for the SPEI reconstruction between southern Europe (this study) and the gridded ISONET reconstruction26 during the period 1711–2018 (a) and 1850–2018 b. Spatial correlation between the gridded ISONET reconstruction26 and winter NAO index63 during the period 1711–2018 (c) and 1850–2018 (d). The black star in a, b indicates the sampling site in this study. The gray dots represent trends significant at the 95% confidence level.