Articles | Volume 19, issue 8
Nat. Hazards Earth Syst. Sci., 19, 1629–1638, 2019
https://doi.org/10.5194/nhess-19-1629-2019

Special issue: Hydrological cycle in the Mediterranean (ACP/AMT/GMD/HESS/NHESS/OS...

Nat. Hazards Earth Syst. Sci., 19, 1629–1638, 2019
https://doi.org/10.5194/nhess-19-1629-2019

Research article 06 Aug 2019

Research article | 06 Aug 2019

Impact of the dry-day definition on Mediterranean extreme dry-spell analysis

Pauline Rivoire et al.

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Latest update: 15 Jun 2021
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Short summary
In order to define a dry period, a threshold for wet days is usually considered to account for measurement errors and evaporation. In the present study, we compare the threshold of 1 mm d−1, the most commonly used threshold, to a time-varying threshold describing evapotranspiration to compare how the risk of extreme dry spells is estimated with both thresholds. Results indicate that considering a fixed threshold can underestimate extreme dry spells during the extended summer.
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