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Vortex initialization for typhoon track prediction

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Summary

A shallow water single level primitive equation model is ideally suited for studying the motion of a tropical cyclone. Three factors seem to be important in the initialization, i.e. the size, intensity and the initial speed and direction of motion of the storm. This study presents the results of sensitivity studies on the above parameters in the definition of a synthetic idealized vortex. The sensitivity studies include results of experimental forecasts for typhoons Betty of 1987 and Dan of 1989. The results of these studies show that the initial size, intensity and direction and speed of motion show considerable sensitivity to the predicted track. Finally a summary of the track forecast errors through 72 hours are presented for these storms.

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  1. Trinh Van Thu & T. N. Krishnamurti

    Present address: Department of Meteorology, B-161, Florida State University, 32306-3034, Tallahassee, FL, Florida, USA

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    1. Trinh Van Thu
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    2. T. N. Krishnamurti
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    Thu, T.V., Krishnamurti, T.N. Vortex initialization for typhoon track prediction. Meteorl. Atmos. Phys. 47, 117–126 (1992). https://doi.org/10.1007/BF01025612

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    • DOI: https://doi.org/10.1007/BF01025612

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