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As one of the most severe typhoons in the year 2005,Typhoon Longwang is chosen as a case study in this article.Throughout its life,two surveillance flights are carried out on it.Different from previous studies,GPS(global positioning system)Dropwinsonde data collected from the Dropwinsonde Observations for Typhoon Surveillance near the Taiwan Region is chosen to present the thermodynamic and kinetic structure at its two different stages of development.This study suggests that not only kinetic structure but also thermodynamic structure of Longwang are more robust in the second surveillance than the first surveillance,with stronger and larger circulation and a warmer core.Further research shows that the environmental vertical wind shear mainly contributes to the asymmetric structure of the typhoon.The strong vertical wind shear not only results in the distinct asymmetric structure,but also restrains the development of the typhoon. 相似文献
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"龙王"台风是2005年登陆中国的典型强台风。在海上观测资料较为稀缺的情况下,应用DOTSTAR(Dropsonde Observations for Typhoon Surveillance near the Taiwan Region)对"龙王"不同发展时段的两次GPS Dropsonde观测资料,对其动力、热力及非对称结构的变化情况进行分析。结果表明,第二次观测到的"龙王"无论在动力结构还是在热力结构上都较第一次观测有所发展,显示"龙王"强度压缩增强。进一步研究表明,环境垂直风切变是造成台风结构不对称分布的主要原因,较大的垂直风切变不但导致台风产生明显的非对称性结构,而且不利于台风的进一步增强。 相似文献
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