"Multi-scale sample entropy" of the CRUTEM4v temperature anomaly data over Central Europe. Time-scales at which the data are aggregated are shown as the scale factor (in months). Black=1850 to 1960. Red=1961 to 2014. Bold lines show the mean of all grid boxes and thin lines show the upper and lower bounds of the 95 percent confidence interval.
The data show that the aggregated temperature data with scale factors greater than about 12 months have a markedly higher sample entropy in the recent past (red) than before 1960 (black).