Temporal Variability of Annual Rainfall in the Macta and Tafna Catchments, Northwestern Algeria

Mohamed Meddi (), Ali Assani () and Hind Meddi

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2010, vol. 24, issue 14, 3817-3833

Abstract: We analyzed the temporal variability of annual precipitation measured at five stations in the Macta (14,380 km 2 ) and Tafna (4,949 km 2 ) catchments located in northwestern Algeria, in connection with climate indices over the 1950–2004 period. Analysis of the temporal variability using linear regression and Pettitt test revealed a significant decline in annual rainfall in the mid-1970s in both basins. Furthermore, a decrease of at least 20% of total annual rainfall is also observed at all five stations. As for the relationship between climate indices and variability of annual precipitation, canonical correlation analysis shows that, from 1950 to 2004, precipitation at the five stations are negatively correlated with NINO4 and, to a lesser degree, with NAO. Copyright Springer Science+Business Media B.V. 2010

Keywords: Annual rainfall; Drought; Climate indices; Linear regression; Pettitt test; Macta and Tafna catchments; Algeria (search for similar items in EconPapers)
Date: 2010
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Citations: View citations in EconPapers (12)

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DOI: 10.1007/s11269-010-9635-7

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