Proceedings of IAHS
Proceedings of IAHS
PIAHS
Articles | Volume 383
Articles | Volume 383
https://doi.org/10.5194/piahs-383-241-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/piahs-383-241-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 383
Post-conference publication
 | 
16 Sep 2020
Post-conference publication |  | 16 Sep 2020

Estimating extreme dry spell risk in Ichkeul Lake Basin (Northern Tunisia): a comparative analysis of annual maxima series with a Gumbel distribution

Majid Mathlouthi and Fethi Lebdi

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Short summary
This paper analyses a 42 year time series of daily precipitation in Ichkeul Lake Basin (Tunisia) in order to predict extreme dry-spell risk. A comparison of observed and estimated maximum dry events (42 year return period) showed that Gumbel distribution fitted to annual maximum series gives better results than the exponential (E) distribution combined with partial duration series (PDS). Indeed, the classical Gumbel approach slightly underestimated the empirical duration of dry events.
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