Wavelet Analysis of Rainfall and Runoff Multidecadal Time Series on Large River Basins in Western North Africa
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Institut de Recherche Pour le Développement, Unité Mixte de Recherche HydroSciences, University of Montpellier, 34095 Montpellier, France
2
Laboratory Géosciences, Faculty of Sciences Semlalia Marrakesh, Marrakesh 40000, Morocco
*
Author to whom correspondence should be addressed.
Academic Editor: Gwo-Fong Lin
Water 2021, 13(22), 3243; https://doi.org/10.3390/w13223243
Received: 11 September 2021
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Revised: 5 November 2021
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Accepted: 10 November 2021
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Published: 16 November 2021
(This article belongs to the Section Hydrology)
This work is dedicated to the study of the spatio-temporal variability of climate in Morocco by the analysis of rainfall (gridded and gauged data) and runoff. The wavelet analysis method has been used in this study to compare the rainfall and runoff series and to show the major discontinuities identified in 1970, 1980, and 2000. Several modes of variability have been detected; this approach has been applied to show annual (1 year) and inter-annual modes (2–4 years, 4–8 years, 8–12/8–16 years, and 16–30 years), and some modes are specific to some stations. This analysis will be complemented by the gridded data covering the period from 1940 to 1999, which will allow for a better understanding of the spatial variability of the highlighted signals set, which identified frequencies at 1 year and 8–16 years, distinguished different time periods at each basin and identified three main discontinuities in 1970, 1980, and 2000. The contribution of climatic indices is important as it is between 55% and 80%.
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Keywords:
coherence; discharge; discontinuities; rainfall; variability; wavelet
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MDPI and ACS Style
Zamrane, Z.; Mahé, G.; Laftouhi, N.-E. Wavelet Analysis of Rainfall and Runoff Multidecadal Time Series on Large River Basins in Western North Africa. Water 2021, 13, 3243. https://doi.org/10.3390/w13223243
AMA Style
Zamrane Z, Mahé G, Laftouhi N-E. Wavelet Analysis of Rainfall and Runoff Multidecadal Time Series on Large River Basins in Western North Africa. Water. 2021; 13(22):3243. https://doi.org/10.3390/w13223243
Chicago/Turabian StyleZamrane, Zineb, Gil Mahé, and Nour-Eddine Laftouhi. 2021. "Wavelet Analysis of Rainfall and Runoff Multidecadal Time Series on Large River Basins in Western North Africa" Water 13, no. 22: 3243. https://doi.org/10.3390/w13223243
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