In this work a set of time-series of inter-arrival times of rainfall events, at daily scale, was analysed, with the aim to verify the issue of increasing duration of dry periods. The set consists of 12 time-series recorded at rain gauges in 1926–2005, six of them belong to an Italian Sub-Alpine area (Piedmont) and six to a Mediterranean one (Sicily). In order to overcome the problem related to limited sample size for high values of inter-arrival times, the discrete probability polylog-series distribution was used to fit the empirical data from partial (20 yr) time-series. Moreover, a simple qualitative trend analysis was applied to some high quantiles of inter-arrival times as well as to the average extent of rain clusters. The preliminary analysis seems to confirm the issue of increasing duration of dry periods for both environments, which is limited to the “cold” season.

Agnese, C., Baiamonte, G., Cammalleri, C., Cat Berro, D., Ferraris, S., Mercalli, L. (2012). Statistical analysis of inter-arrival times of rainfall events for Italian Sub-Alpine and Mediterranean areas. ADVANCES IN SCIENCE AND RESEARCH, 8(8) [10.5194/asr-8-171-2012].

Statistical analysis of inter-arrival times of rainfall events for Italian Sub-Alpine and Mediterranean areas

AGNESE, Carmelo;BAIAMONTE, Giorgio;CAMMALLERI, Carmelo;
2012-01-01

Abstract

In this work a set of time-series of inter-arrival times of rainfall events, at daily scale, was analysed, with the aim to verify the issue of increasing duration of dry periods. The set consists of 12 time-series recorded at rain gauges in 1926–2005, six of them belong to an Italian Sub-Alpine area (Piedmont) and six to a Mediterranean one (Sicily). In order to overcome the problem related to limited sample size for high values of inter-arrival times, the discrete probability polylog-series distribution was used to fit the empirical data from partial (20 yr) time-series. Moreover, a simple qualitative trend analysis was applied to some high quantiles of inter-arrival times as well as to the average extent of rain clusters. The preliminary analysis seems to confirm the issue of increasing duration of dry periods for both environments, which is limited to the “cold” season.
Settore ICAR/02 - Costruzioni Idrauliche E Marittime E Idrologia
Settore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-Forestali
Agnese, C., Baiamonte, G., Cammalleri, C., Cat Berro, D., Ferraris, S., Mercalli, L. (2012). Statistical analysis of inter-arrival times of rainfall events for Italian Sub-Alpine and Mediterranean areas. ADVANCES IN SCIENCE AND RESEARCH, 8(8) [10.5194/asr-8-171-2012].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/64487
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