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Application of the Innovative Trend Analysis Method for the Trend Analysis of Rainfall Anomalies in Southern Italy

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Abstract

In this paper, an investigation of the temporal rainfall variability, in a large area of southern Italy, has been carried out using a homogeneous monthly rainfall dataset of 559 rain gauges with more than 50 years of observation. The area under investigation is a large portion of the Italian peninsula, ranging from the Campania and the Apulia regions in the North, to Sicily in the South, and covering an area of about 85,000 km2. Possible trends in seasonal and annual rainfall values have been detected by means of a new graphical technique, Şen’s method, which allows the trend identification of the low, medium and high values of a series. Moreover, the Mann–Kendall test has been also applied. As a result, different values and tendencies of the highest and of the lowest rainfall data have emerged among the five regions considered in the analysis. In particular, at seasonal scale, a negative trend has been detected especially in winter and in autumn in the whole study area, whereas not well defined trend signals have been identified in summer and spring.

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Acknowledgements

A previous shorter version of the paper has been presented in the 10th World Congress of EWRA “Panta Rei” Athens, Greece, 5-9 July 2017.

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Authors and Affiliations

  1. Institute for Agriculture and Forest Systems in the Mediterranean (CNR-ISAFOM), National Research Council of Italy, Rende, CS, Italy

    T. Caloiero

  2. Research Institute for Geo-hydrological Protection (CNR-IRPI), National Research Council of Italy, Rende, CS, Italy

    R. Coscarelli

  3. Department of Computer Engineering, Modeling, Electronics, and Systems Science (DIMES), University of Calabria, Rende, CS, Italy

    E. Ferrari

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  1. T. Caloiero
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  2. R. Coscarelli
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  3. E. Ferrari
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Correspondence to T. Caloiero.

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Caloiero, T., Coscarelli, R. & Ferrari, E. Application of the Innovative Trend Analysis Method for the Trend Analysis of Rainfall Anomalies in Southern Italy. Water Resour Manage 32, 4971–4983 (2018). https://doi.org/10.1007/s11269-018-2117-z

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  • DOI: https://doi.org/10.1007/s11269-018-2117-z

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