The Friuli Venezia Giulia (FVG) region, northeastern Italy, records the heaviest precipitation annual totals of the country. The region counts on a dense ground-station network constituted by 2 main rain-gauges networks, whose sampling frequency has been progressively increased from 60 up to 1min step. In this work, we propose a comprehensive analysis of the available dataset of continuous series at high temporal resolution (i.e. 60, 30, 5 and 1min) to verify whether trends in very short rainfalls are underway. We adopt the quantile regression (QR) method which allows to detect changes in the tails of the rainfall distributions and to screen the whole rainfall time series. At this aim, we first introduce a method to check and correct the continuous series by removing the suspicious outliers, based on references values. Significant increasing trends at 5% of significant level have been detected on some of the analysed stations.

Arnone, E., Treppiedi, D., Noto, L. (2024). Analysis of high-resolution rain records in FVG, northeastern Italy. In Analysis of high-resolution rain records in FVG, northeastern Italy (pp. 5-10) [10.5194/piahs-385-5-2024].

Analysis of high-resolution rain records in FVG, northeastern Italy

Arnone, Elisa;Treppiedi, Dario;Noto, Leonardo
2024-04-18

Abstract

The Friuli Venezia Giulia (FVG) region, northeastern Italy, records the heaviest precipitation annual totals of the country. The region counts on a dense ground-station network constituted by 2 main rain-gauges networks, whose sampling frequency has been progressively increased from 60 up to 1min step. In this work, we propose a comprehensive analysis of the available dataset of continuous series at high temporal resolution (i.e. 60, 30, 5 and 1min) to verify whether trends in very short rainfalls are underway. We adopt the quantile regression (QR) method which allows to detect changes in the tails of the rainfall distributions and to screen the whole rainfall time series. At this aim, we first introduce a method to check and correct the continuous series by removing the suspicious outliers, based on references values. Significant increasing trends at 5% of significant level have been detected on some of the analysed stations.
18-apr-2024
Settore ICAR/02 - Costruzioni Idrauliche E Marittime E Idrologia
Arnone, E., Treppiedi, D., Noto, L. (2024). Analysis of high-resolution rain records in FVG, northeastern Italy. In Analysis of high-resolution rain records in FVG, northeastern Italy (pp. 5-10) [10.5194/piahs-385-5-2024].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/639498
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