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Precipitation change in Southern Italy linked to global scale oscillation indexes

机译:意大利南部的降水变化与全球尺度振荡指数相关

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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.
机译:这项研究使用约70个雨量计的均质数据库对50多年的观测进行了调查,研究了意大利南部五个地区(坎帕尼亚,普利亚,巴西利卡塔,卡拉布里亚和西西里岛)的降水变化。首先,通过Mann-Kendall非参数检验进行统计分析,以确定降雨在年度和季节尺度上的趋势。然后,利用Spearman检验研究了降雨与某些遥相关型指数之间的关系。结果表明,在该系列的大部分数据中,年度和冬季总量具有显着的统计学显着负趋势。此外,在意大利南部,特别是在冬季和研究区域的第勒尼安那一侧,遥相关型与降水之间存在着很强的相关性。

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