¿Se acentúan ahora las catástrofes climáticas en España?

Abstract

«Climatic catastrophe» is defined as an extreme event (at both tails) with a recurrence period of 25 years for 6 variables (precipitation, mean temperature, maximum temperature, minimum temperature, mean of maxima, mean of minima in annual and monthly values) in 14 Spanish observatories (1867-1995 series). Frequency histograms have been represented for decades and 5-years lasting periods and chi-square tests made which show no statistical significance in the differences between periods for precipitation, but highlight the thermal (cold and hot) anomaly at the end of the XIX century (maximal variability), as compared to other periods. Emphasis is put on the role played for the variables (as factors) in extreme values by means of multiple correlations and correlation matrices.