Improving the visualization of rainfall trends using various innovative trend methodologies with time–frequency-based methods

Zerouali, BilelVegetal Chemistry-Water-Energy Laboratory, Department of Hydraulic, Faculty of Civil Engineering and Architecture, University of Chlef, Hassiba Benbouali, B.P. 78C, 02180, Ouled Fares, Chlef, Algeria (author)

Validerad;2022;Nivå 2;2022-08-18 (hanlid)
In this paper, the Innovative Trend Methodology (ITM) and their inspired approaches, i.e., Double (D-ITM) and Triple (T-ITM), were combined with Hilbert Huang transform (HHT) time frequency-based method. The new hybrid methods (i.e., ITM-HHT, D-ITM-HHT, and T-ITM-HHT) were proposed and compared to the DWT-based methods in order to recommend the best method. Three total annual rainfall time series from 1920 to 2011 were selected from three hydrological basins in Northern Algeria. The new combined models (ITM-HHT, D-ITM-HHT, and T-ITM-HHT) revealed that the 1950â€“1975 period has significant wet episodes followed by a long-term drought observed in the western region of Northern Algeria, while Northeastern Algeria presented a wet period since 2001. The proposed approaches successfully detected, in a visible manner, hidden trends presented in the signals, which proves that the removal of some modes of variability from the original rainfall signals can increase the accuracy of the used approaches. Â© 2022, The Author(s).

Elbeltagi, AhmedAgricultural Engineering Department, Faculty of Agriculture, Mansoura University, Mansoura, 35516, Egypt (author)
Al-Ansari, Nadhir,1947-Luleå tekniska universitet,Geoteknologi(Swepub:ltu)nadhir (author)
Abda, ZakiResearch Laboratory of Water Resources, Soil and Environment, Department of Civil Engineering, Faculty of Civil Engineering and Architecture, Amar Telidji University, P.O. Box 37.G, 03000, Laghouat, Algeria (author)
Chettih, MohamedResearch Laboratory of Water Resources, Soil and Environment, Department of Civil Engineering, Faculty of Civil Engineering and Architecture, Amar Telidji University, P.O. Box 37.G, 03000, Laghouat, Algeria (author)
Santos, Celso Augusto GuimarãesDepartment of Civil and Environmental Engineering, Federal University of Paraíba, João Pessoa, Paraíba, 58051-900, Brazil (author)
Boukhari, SofianeDepartment of Civil Engineering, Mohamed Cherif Messaadia University of Souk-Ahras, Souk-Ahras, Algeria (author)
Araibia, Ahmed SalahDepartment of Civil Engineering, Mohamed Cherif Messaadia University of Souk-Ahras, Souk-Ahras, Algeria (author)
Vegetal Chemistry-Water-Energy Laboratory, Department of Hydraulic, Faculty of Civil Engineering and Architecture, University of Chlef, Hassiba Benbouali, B.P. 78C, 02180, Ouled Fares, Chlef, AlgeriaAgricultural Engineering Department, Faculty of Agriculture, Mansoura University, Mansoura, 35516, Egypt (creator_code:org_t)

By the author/editor: Zerouali, Bilel; Elbeltagi, Ahmed; Al-Ansari, Nadhi ...; Abda, Zaki; Chettih, Mohamed; Santos, Celso Au ...; show more...; Boukhari, Sofian ...; Araibia, Ahmed S ...; show less...

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NATURAL SCIENCES: NATURAL SCIENCES; and Earth and Relate ...; and Environmental Sc ...

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