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http://dx.doi.org/10.9798/KOSHAM.2013.13.5.325

Development and Application of an Storm Identification Algorithm that Conceptualizes Storms by Elliptical Shape  

Cho, Huidae (Staff Water Resources Engineer, Dewberry)
Kim, Dongkyun (Department of Civil Engineering, Hongik University)
Lee, Kanghee (Department of Civil Engineering, Hongik University)
Lee, Jinsu (Department of Civil Engineering, Hongik University)
Lee, Dongryul (Department of Water Resources Engineering, Korea Institute of Construction Technology)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.13, no.5, 2013 , pp. 325-335 More about this Journal
Abstract
A storm identification algorithm conceptualizing the storm with an elliptical shape was developed. The developed algorithm identifies the center, major and minor axis, and the inclination angle of the ellipse that contains the maximum volume of rainfall for a given area using the isolated particle swarm optimization algorithm. The developed algorithm was applied to radar precipitation imagery of 10 major storms observed in Korea during the year 2008 and 2012. The algorithm successfully identified the storm shapes for all time steps of all 10 major storms. The following conclusion was drawn from the result of the storm identification: (1) as the size of the ellipse becomes smaller, the diversity of the storm shape increased, and the diversity decreased as the size of the ellipse increases; (2) the temporal variation of the storm center identified by the ellipse is not always continuous; (3) the tracking capability of the algorithm is expected to be improved as the center and the shape of the ellipse at the previous time step is considered in the objective function of the optimization algorithm.
Keywords
radar; precipitation; rainfall; tracking;
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