Abstract
The knowledge of the climatic behavior especially that one of semi-arid regions is required to optimize the management of water resources. Here climate variability is directly related to water resources that are of a high socio-economic and environmental significance. This work deals mainly with a statistical analysis of the precipitation regime to assess its spatial distribution and temporal variation in north-western Algeria. For this, a time series and a principal component analysis are performed on rainfall series representing annual precipitations of twenty-one meteorological stations for the period 1914 to 2004, the most complete and longest of West Algeria, in order to detect patterns and trends in the region. A spectral analysis of the time series revealed the existence of a period of roughly 30 years for all stations. Furthermore, the trend of a wide part of the obtained spectra suggests the existence of another period longer than the samples size.
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The authors thank the Agence Nationale des Ressources Hydriques (ANRH National water resources Agency) for providing the meteorological data and the reviewers for their constructive comments and suggestions.
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Hamlaoui-Moulai, L., Mesbah, M., Souag-Gamane, D. et al. Detecting hydro-climatic change using spatiotemporal analysis of rainfall time series in Western Algeria. Nat Hazards 65, 1293–1311 (2013). https://doi.org/10.1007/s11069-012-0411-2
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DOI: https://doi.org/10.1007/s11069-012-0411-2