study analyses thirteen daily precipitation series of Piedmont, region of
The meteorological series have been chosen because they were meteorological
observatories operating continuously from the beginning of 1900 until 2011. As
the first step an historical research over each station has been carried out.
In this way, the potential breaks, in the series, either due to changes of
locations or instruments, have been determined and the missing values have been
recovered. On the precipitation daily series a quality control have been
effectuated and by metadata identification it was possible to assess the
homogeneity of the meteorological series. In this way we have obtained the
complete and correct series on which trends have been computed. In order to
better understand the consequences of climate variations on our environment and
society, we have calculated the climate indices proposed by “CCL/CLIVAR Working
Group on Climate Change Detection” (dry and wet days, rainy days, intensity of
precipitation…) over the time. The values of precipitation have also allowed beginning
the climatic analysis with the aim at defining the principle local peculiarity
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