Caloiero T.; Coscarelli R.; Ferrari E.; Mancini M., 2008, Connections between seasonal rainfall anomalies and planetary-scale indexes variability in the Calabria region (Southern Italy), International Symposium_ The Role of Hydrology in Water Resources Management, IHP 2008, Capri, 14-16 Ottobre 2008,
URL: http://www.cnr.it/prodotto/i/188331

The following work presents a trend analysis of precipitation observed in Calabria through the Mann-Kendall non-parametric test and a correlation study between rainfalls aggregated at different time scales and two global scale indexes. The results show a general negative trend in precipitation, with the exception of summer season, and links of NAO index with autumn and winter rainfalls, observed in the north-western part of Calabria, and of MO index with winter precipitation, revealing a more uniform distribution throughout the region. Moreover, the NAOI and the MOI, calculated both in autumn and winter periods, have been correlated with precipitation aggregated in enlarged periods, obtaining good correlations for both the indexes with particular reference to the decade 1990-1999. The correlations provide a possible link for water resources availability when NAOI and MOI are known for the previous periods.

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