Climate Change Research

Climate Change Research

Evaluating the performance of metaheuristic algorithms for optimizing input data to model dust storms (A case study of Sistan and Baluchestan province)

Document Type : Original Article

Authors
1 Master Candidate, Department of Reclamation of Arid and Mountainous regions Engineering, Faculty of Natural Resources, University of Tehran, Karaj, Iran
2 Ph.D. candidate, Department of Reclamation of arid and mountainous regions Engineering, Faculty of Natural Resources, University of Tehran, Karaj, Iran
3 Assistant Professor, Department of Reclamation of Arid and Mountainous regions Engineering, Faculty of Natural Resources, University of Tehran, Karaj, Iran
4 Professor, Department of Reclamation of Arid & Mountain regions Engineering, Faculty of Natural Resources, University of Tehran, Karaj, Iran
Abstract
Dust storms are among the most severe climatic hazards affecting arid and semi-arid regions, particularly southeastern Iran. The Sistan and Baluchestan Province is especially vulnerable due to its proximity to desert areas, persistent drought conditions, reduced vegetation cover, and the influence of the seasonal 120-day winds. Given the complex and uncertain nature of dust storm prediction—especially in regions with limited or low-quality meteorological data—this study investigates the role of metaheuristic algorithms in improving predictive accuracy through input optimization. The main objective is to evaluate the performance of two metaheuristic algorithms, Invasive Weed Optimization (IWO) and Water Cycle Algorithm (WCA), for optimizing input variables in the hybrid Fuzzy Clustering Model Regression–Moving Average (FCMR–MA) model. The hybrid model was employed to predict the seasonal frequency of dust storm days (FDSD) across five synoptic stations in Sistan and Baluchestan over a 40-year period (1980–2020). Four predictive scenarios were examined. The baseline FCMR–MA model using only dust storm data; the same model incorporating drought indices (SPI and SPEI); and the optimized FCMR–MA models enhanced with WCA and IWO algorithms. Multiple forecasting horizons (one- to four-season lags) were applied to assess model sensitivity to past dust storm events. Model performance was evaluated using four statistical indicators: Root Mean Square Error (RMSE), Mean Absolute Error (MAE), Nash–Sutcliffe Efficiency (NS), and the Correlation Coefficient (R). Results indicate that both metaheuristic algorithms substantially enhance the predictive accuracy of the FCMR–MA model, with the IWO algorithm consistently achieving the best performance across all stations and evaluation metrics—particularly in Zabol and Zahedan, which exhibit higher FDSD frequencies. These findings highlight the potential of metaheuristic optimization for improving dust storm forecasting in data-scarce arid environments.
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