Analytic Study on Potential Instability and Spiral Structure of Rain Clusters |
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| Authors: | YU Jie and ZHANG Ming |
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| Institution: | Laboratory for atmospheric circulation and short-term climate prediction,Institute of Meteorology,PLA University of Science and Technology,Nanjing 211101 China |
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| Abstract: | This paper presents a study on potential instability and spiral structure of unstable rain clusters.First,we develop a linearized non-axisymmetrical mathematic model for rain clusters in circular cylindrical coordinates and acquire its analytic solution.Second,we discuss the potential instability of non-axisymmetrical rain clusters.Finally,we conclude that spiral structures can exist in rain clusters.Our analysis indicates that potential instability occurs when humid stratification coefficient is less than ... |
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| Keywords: | rain clusters mathematic model spiral structure potential instability |
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