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9012号热带气旋维持的卫星云图和垂直结构特征分析 总被引:2,自引:0,他引:2
本文根据卫星云图的演变和常规天气分析相结合,对9012号热带气旋登陆后维持水消的成因进行了分析。指出该热带气旋经久不消的重要原因为其西南侧对流云团和东北侧高空槽前对流云带与热带气旋云系相衔接在中低层东北气流引导下卷入,热带气旋内部的两条云带的维持,以及利有的环流条件。 相似文献
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Using 2.5 ×2.5 winds and pressure grid data, the angular momentum budgets are studied in this paper for TC 9012 (Yancy) which was kept active 65 hours after land fall.It is found that the inland TC 9012 moved into the center of a relatively stable saddle, in which large amount of humid air was entrained into the storm from the southerly jet at low level to bund up the energy of latent heat, the weak cold air coming from the north provided it with baroclinic energy, while the vorticity transfer of geostrophic angular momentum on the radius 4°-8°from the cyclone center at upper troposphere and the input of cyclonic angular momentum produced by the βterm are immediate factors maintaining the central pressure and maximum winds. 相似文献
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