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www.nat-hazards-earth-syst-sci.net/11/1683/2011/
doi:10.5194/nhess-11-1683-2011
© Author(s) 2011. This work is distributed
under the Creative Commons Attribution 3.0 License.
Precipitation change in Southern Italy linked to global scale oscillation indexes
1Department of Environmental, Hydraulic, Infrastructures and Surveying Engineering (DIIAR), Politecnico of Milan, Milan, Italy
2National Research Council – Research Institute for Geo-Hydrological Protection (CNR-IRPI), Cosenza, Italy
3Department of Soil Protection, University of Calabria, Cosenza, Italy
Abstract. This study investigates precipitation variability in five regions of Southern Italy (Campania, Apulia, Basilicata, Calabria and Sicily) using a homogeneous database of about 70 rain gauges with more than 50 years of observation. First, a statistical analysis was performed through the Mann-Kendall non-parametric test in order to determine rainfall the trend on both yearly and seasonal scales. Then, the relationship between the rainfall and some teleconnection pattern indexes was investigated using Spearman's test. The results show remarkable statistically significant negative trends for annual and winter aggregations in most part of the series. Moreover, a strong correlation has emerged between the teleconnection patterns and precipitation in Southern Italy, particularly in winter and on the Tyrrhenian side of the study area.
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Citation: Caloiero, T., Coscarelli, R., Ferrari, E., and Mancini, M.: Precipitation change in Southern Italy linked to global scale oscillation indexes, Nat. Hazards Earth Syst. Sci., 11, 1683-1694, doi:10.5194/nhess-11-1683-2011, 2011. Bibtex EndNote Reference Manager XML
