Examination of Single- and Hybrid-Based Metaheuristic Algorithms in ANN Reference Evapotranspiration Estimating

Hadeel E. Khairan, Salah L. Zubaidi, Syed Fawad Raza, Maysoun Hameed, Nadhir Al-Ansari () and Hussein Mohammed Ridha
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Hadeel E. Khairan: Department of Civil Engineering, Wasit University, Wasit 52001, Iraq
Salah L. Zubaidi: Department of Civil Engineering, Wasit University, Wasit 52001, Iraq
Syed Fawad Raza: College of Earth and Environmental Sciences, University of the Punjab, Lahore 54590, Pakistan
Maysoun Hameed: Ministry of Water Resources, Baghdad 10066, Iraq
Nadhir Al-Ansari: Department of Civil Environmental and Natural Resources Engineering, Lulea University of Technology, 971 87 Lulea, Sweden
Hussein Mohammed Ridha: Department of Computer Science, Faculty of Computer Science and Information Technology, Universiti Putra Malaysia, Serdang 43400, Malaysia

Sustainability, 2023, vol. 15, issue 19, 1-22

Abstract: Hydrological resource management, including crop watering and irrigation scheduling, relies on reliable estimates of reference evapotranspiration (ETo). However, previous studies of forecasting ETo have not dealt with comparing single and hybrid metaheuristic algorithms in much detail. This study aims to assess the efficiency of a novel methodology to simulate univariate monthly ETo estimates using an artificial neural network (ANN) integrated with the hybrid particle swarm optimisation–grey wolf optimiser algorithm (PSOGWO). Several state-of-the-art algorithms, including constriction coefficient-based particle swarm optimisation and chaotic gravitational search algorithms (CPSOCGSA), the slime mould algorithm (SMA), the marine predators algorithm (MPA) and the modified PSO algorithm were used to evaluate PSOGWO’s prediction accuracy. Monthly meteorological data were collected in Al-Kut City (1990 to 2020) and used for model training, testing and validation. The results indicate that pre-processing techniques can improve raw data quality and may also suggest the best predictors scenario. That said, all models can be considered efficient with acceptable simulation levels. However, the PSOGWO-ANN model slightly outperformed the other techniques based on several statistical tests (e.g., a coefficient of determination of 0.99). The findings can contribute to better management of water resources in Al-Kut City, an agricultural region that produces wheat in Iraq and is under the stress of climate change.

Keywords: reference evapotranspiration prediction; ANN; hybrid-based metaheuristic algorithm; PSOGWO; Iraq (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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