Self-Learning Cellular Automata for Forecasting Precipitation from Radar Images
Publication: Journal of Hydrologic Engineering
Volume 18, Issue 2
Abstract
This paper presents a new forecasting methodology that uses self-learning cellular automata (SLCA) for including variables that consider the spatial dynamics of the mass of precipitation in a radar forecast model. Because the meteorological conditions involve nonlinear dynamic behavior, an automatic learning model is used to aid the cellular automata rules (SLCA). The new methodology is applied to the western part of England (Brue river basin) using NIMROD data. The radar information from 1 month of hourly radar measurements is used. Two models, a regression model tree (MT) and an artificial neural network (ANN) model, are used to learn the dynamics of the spatially local effects within the cellular automation (CA) neighboring areas. A spatial correlation (tracking pattern) reference model is built for comparing the first hour of precipitation forecast. Model results show that the SLCA is more accurate than conventional tracking. Furthermore, it appears that this technique can be extended to include other important atmospheric variables in forecasting processes.
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Acknowledgments
The authors greatly acknowledge the data supplier: the British Atmospheric Data Centre.
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© 2013 American Society of Civil Engineers.
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Received: May 12, 2011
Accepted: Apr 30, 2012
Published online: Jan 15, 2013
Published in print: Feb 1, 2013
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