Classification of Extreme Rainfall for a Mediterranean Region by Means of Atmospheric Circulation Patterns and Reanalysis Data

Giuseppe Cipolla (), Antonio Francipane and Leonardo Valerio Noto
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Giuseppe Cipolla: University of Palermo
Antonio Francipane: University of Palermo
Leonardo Valerio Noto: University of Palermo

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2020, vol. 34, issue 10, No 10, 3219-3235

Abstract: Abstract The atmospheric circulation can be recognized as one of the causes of severe rainfall events occurrence. Such events, especially when are characterized by short durations and high intensities, result in flood events in the Mediterranean area. It is very important to understand how these heavy rainfall events, which can be usually identified with convective rainfall, are related to the different types of atmospheric circulation. In order to do this, some weather circulation patterns (WPs), which have been derived for the Europe, have been first connected with the rainfall annual maxima (AMAX) recorded over the Sicily. The analyses allowed to identify those WPs that are more likely to result into the occurrence of the AMAX. Secondly, two ERA-Interim reanalysis indexes have been used to define a criterion to distinguish those AMAX mainly due to a convective component from those more related to a stratiform precipitation, also detecting a transient zone between these two types of events. Finally, the main results have been connected together with the aim to define a set of triggering factors of extreme rainfall events.

Keywords: Weather circulation patterns; Rainfall AMAX; Convective precipitation; Stratiform precipitation; Mediterranean; Sicily (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1007/s11269-020-02609-1

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