Real-Time Evaluation of the Uncertainty in Weather Forecasts Through Machine Learning-Based Models

Carmen Calvo-Olivera (), Ángel Manuel Guerrero-Higueras (), Jesús Lorenzana () and Eduardo García-Ortega ()
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Carmen Calvo-Olivera: SCAYLE
Ángel Manuel Guerrero-Higueras: Universidad León
Jesús Lorenzana: SCAYLE
Eduardo García-Ortega: Universidad León

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2024, vol. 38, issue 7, No 11, 2455-2470

Abstract: Abstract Meteorological events have always been of great interest because they have influenced everyday activities in critical areas, such as water resource management systems. Weather forecasts are solved with numerical weather prediction models. However, it sometimes leads to unsatisfactory performance due to the inappropriate setting of the initial state. Precipitation forecasting is essential for water resource management in semi-arid climate and seasonal rainfall areas such as the Ebro basin. This research aims to improve the estimation of the uncertainty associated with real-time precipitation predictions presenting a machine learning-based method to evaluate the uncertainty of a weather forecast obtained by the Weather Research and Forecasting model. We use a model trained with ground-truth data from the Confederación Hidrográfica del Ebro, and WRF forecast results to compute uncertainty. Experimental results show that Decision Tree-based ensemble methods get the lowest generalization error. Prediction models studied have above 90% accuracy, and root mean square error has similar results compared to those obtained with the ground truth data. Random Forest presents a difference of -0.001 concerning the 0.535 obtained with the ground truth data. Generally, using the ML-based model offers good results with robust performance over more traditional forms for uncertainty calculation and an effective alternative for real-time computation.

Keywords: Precipitation; Machine learning; Forecast; Uncertainty; Decision Tree (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s11269-024-03779-y

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