Fig. 1

Timescale decomposition for annual precipitation (a–c) and air temperature (d–f), sketching the total explained variance for the long-term trend (a, d), decadal (b, e) and inter-annual variability (c, f) signals. Grid points in white indicate places where the lack of data would degrade the analysis, thus the corresponding signal has been removed by the screening process [15]. Analysis focuses in the region delimited by the black box (see main text)