  In this work, an analysis of multifractal parameters of daily precipitation
series over the Iberian Peninsula was performed in two 30-year periods to
explore whether these properties follow any pattern. Fluctuations of
precipitation series show three different scaling regions. Only two distinct
regimes for small and large timescales can be confirmed, while intermediate
scales are part of a transition region. It is also observed a certain degree of
multifractality, which is higher for small timescales. At these scales, there
is a high persistence which follows the spatial gradient of the annual
precipitation. Moreover, multifractal parameters of the precipitation are
modified according to complex spatial and temporal patterns. Only persistence
uniformly decreases in the last period. Other relevant findings are the changes
in the asymmetry of multifractal spectra in the eastern belt at larger
timescales, which might be related to the change in the behavior of the
Mediterranean cyclones.
