Abstract
Based on the law of inflow angle change in a tropical cyclone (TC) as a function of radius, an analytical expression as a combination of hyperbolic and logarithmic spirals (HLS) for the description of TC spiral cloud-rain bands is retrieved. Parameters of the HLS are deterlnlned by the physical parameters of a TC. The advantage of the proposed approximation over the empirical logarithmic approximation is shown with several examples of satellite and radar images of a TC.
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Original Russian Text © B. S. Yurchak, 2007, published in Russian Meteorology and Hydrology, 2007, No. 1, pp. 15–29.
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Yurchak, B.S. Description of cloud-rain bands in a tropical cyclone by a hyperbolic-logarithmic spiral. Russ. Meteorol. Hydrol. 32, 8–18 (2007). https://doi.org/10.3103/S1068373907010025
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DOI: https://doi.org/10.3103/S1068373907010025