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Article

Analysis of the Spatiotemporal Annual Rainfall Variability in the Wadi Cheliff Basin (Algeria) over the Period 1970 to 2018

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Faculty of Nature and Life Sciences, Laboratory of Water & Environment, University Hassiba Benboual of Chlef, Chlef 02180, Algeria
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National Higher School of Agronomy, ENSA, Hassan Badi 16200, El Harrach, Algiers 16004, Algeria
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National Research Council-Institute for Agricultural and Forest Systems in Mediterranean (CNR-ISAFOM), 87036 Rende, Italy
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Department of Sanitary Engineering and Water Management, University of Agriculture in Krakow, Mickiewicza 24/28 Street, 30-059 Krakow, Poland
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Department of Civil Engineering and NOAA-CREST, The City College of New York, New York, NY 10031, USA
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Laboratory Management and Valorization of Agricultural and Aquatic Ecosystems, Morsli Abdellah Tipaza University Center, Oued Merzoug, Tipaza 42000, Algeria
*
Author to whom correspondence should be addressed.
Academic Editor: Matthew Therrell
Water 2021, 13(11), 1477; https://doi.org/10.3390/w13111477
Received: 2 May 2021 / Revised: 20 May 2021 / Accepted: 22 May 2021 / Published: 25 May 2021
(This article belongs to the Special Issue Hydrology in Water Resources Management)
In the context of climate variability and hydrological extremes, especially in arid and semi-arid zones, the issue of natural risks and more particularly the risks related to rainfall is a topical subject in Algeria and worldwide. In this direction, the spatiotemporal variability of precipitation in the Wadi Cheliff basin (Algeria) has been evaluated by means of annual time series of precipitation observed on 150 rain gauges in the period 1970–2018. First, in order to identify the natural year-to-year variability of precipitation, for each series, the coefficient of variation (CV) has been evaluated and spatially distributed. Then, the precipitation trend at annual scale has been analyzed using two nonparametric tests. Finally, the presence of possible change points in the data has been investigated. The results showed an inverse spatial pattern between CV and the annual rainfall, with a spatial gradient between the southern and the northern sides of the basin. Results of the trend analysis evidenced a marked negative trend of the annual rainfall (22% of the rain gauges for a significant level equal to 95%) involving mainly the northern and the western-central area of the basin. Finally, possible change points have been identified between 1980 and 1985. View Full-Text
Keywords: precipitation; climate change; Sen’s estimator; Mann-Kendall; Wadi Cheliff basin precipitation; climate change; Sen’s estimator; Mann-Kendall; Wadi Cheliff basin
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MDPI and ACS Style

Achite, M.; Caloiero, T.; Wałęga, A.; Krakauer, N.; Hartani, T. Analysis of the Spatiotemporal Annual Rainfall Variability in the Wadi Cheliff Basin (Algeria) over the Period 1970 to 2018. Water 2021, 13, 1477. https://doi.org/10.3390/w13111477

AMA Style

Achite M, Caloiero T, Wałęga A, Krakauer N, Hartani T. Analysis of the Spatiotemporal Annual Rainfall Variability in the Wadi Cheliff Basin (Algeria) over the Period 1970 to 2018. Water. 2021; 13(11):1477. https://doi.org/10.3390/w13111477

Chicago/Turabian Style

Achite, Mohammed, Tommaso Caloiero, Andrzej Wałęga, Nir Krakauer, and Tarek Hartani. 2021. "Analysis of the Spatiotemporal Annual Rainfall Variability in the Wadi Cheliff Basin (Algeria) over the Period 1970 to 2018" Water 13, no. 11: 1477. https://doi.org/10.3390/w13111477

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