Extreme Climatic Events in Dendroclimatic Reconstructions from Spain

The analysis of series of climatic values for almost a millennium, obtained by dendroclimatic methods, makes evident the existence of values that are remarkably greater or smaller than the rest. The criterion to identify this type of values has been the distance to the mean of the climatic series, in units of the standard deviation: out-of-range values are those that differ from the mean in more than four standard deviations. The study of these values gives an original perspective of the climatic past in Spain, including the outstanding oscillations of the Little Ice Age (LIA). The unusual climatic conditions of the last decades are also detected using this method.