Extended Data Fig. 5: Contribution of the individual site chronologies to the common variance in the regional clusters of Northern Fennoscandia (NF), Southern Fennoscandia (SF), Western Europe (WE), Eastern Central Europe (ECE) and Alps & Pyrenees (AP).
From: Recent human-induced atmospheric drying across Europe unprecedented in the last 400 years
Membership (%) the contribution to the common variance in a cluster in percentage. Mean rall is the mean inter-series correlation coefficient (that is, the common signal strength) of all chronologies contributing to the corresponding cluster, mean r>75 is the mean inter-series correlation of the chronologies with a membership >75% in a cluster (* P < 0.01, ** P < 0.001). Calculations are based on the period 1920-2000. Sites above a membership threshold of 75% (straight line) were used for the development of regional chronologies through nested principal component analysis. Site codes see Supplementary Table 1.
