Detecting hydro-climatic change using spatiotemporal analysis of rainfall time series in Western Algeria
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. Copyright Springer Science+Business Media Dordrecht 2013
Year of publication: |
2013
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Authors: | Hamlaoui-Moulai, Leila ; Mesbah, Mohammed ; Souag-Gamane, Doudja ; Medjerab, Abderrahmane |
Published in: |
Natural Hazards. - International Society for the Prevention and Mitigation of Natural Hazards. - Vol. 65.2013, 3, p. 1293-1311
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Publisher: |
International Society for the Prevention and Mitigation of Natural Hazards |
Subject: | Rainfall series | Statistics | Cartography | Spectra analysis | West Algeria |
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