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中国农学通报 ›› 2015, Vol. 31 ›› Issue (17): 209-216.doi: 10.11924/j.issn.1000-6850.casb15010193

所属专题: 农业气象

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

台风“凤凰”路径强度变化对太湖北岸风雨影响的诊断

陈潇潇,王璐璐,查书瑶,钱昊钟   

  1. 江苏省无锡市气象局,江苏省无锡市气象局,江苏省无锡市气象局,江苏省无锡市气象局
  • 收稿日期:2015-01-26 修回日期:2015-03-20 接受日期:2015-03-25 出版日期:2015-07-27 发布日期:2015-07-27
  • 通讯作者: 陈潇潇

Analysis of the Effects of Fung-wong Track and Strength Variation on North Bank of Tai Lake

  • Received:2015-01-26 Revised:2015-03-20 Accepted:2015-03-25 Online:2015-07-27 Published:2015-07-27

摘要: 为探讨2014年第16号台风“凤凰”运动路径怪异和数次登陆强度不变的特点,了解其给太湖北岸地区带来的风雨影响,通过对台风环境背景场的天气学分析和物理量诊断,对16号台风“凤凰”的路径动态、强度变化、结构特征进行分析。结果表明:受副高进退和引导气流作用,台风“凤凰”沿着副高外围,先后经历西进、北上,东出的运动,深层引导气流能较好的指示台风的运动。台风“凤凰”自身体积较小,发生发展前期海温偏低,海洋热容量低,温度条件不利于台风的增强。同时,台风流场结构极为不对称,随着垂直风切的增强,台风强度减弱,并经过数次登陆,破坏了环流结构,总体强度难以增强。由于台风路径偏东,强度偏弱,影响范围较小,水汽输送条件不利,且无冷空气配合,太湖北岸地区在此次台风过程中以中雨为主,风力影响集中在台风环流中心附近,影响总体较小。

关键词: 花生, 花生, 烯效唑, 产量, 品质

Abstract: The paper aims to investigate the characteristics of unusual track and strength of severe tropical storm Fung- wong (1416), as well as the rainfall and wind caused by it in 2014. By analyzing the weather environmental fields around Fung-wong and diagnosing its physical quantities, the path variation and strength change as well as structure characteristics were studied. Results showed that: Fung-wong was influenced by the change of subtropical high and steering flow, moved along the subtropical high periphery, travelled westward first, then headed northward and moved eastward out to the sea finally. The deep steering flow played a good role in indication. In strength aspect, Fung-wong owned a small size, the previous sea temperature was low so as to reduce the heat capacity level, herein, strength of Fung-wong could not be enhanced by these conditions. Meanwhile, the structure of Fung-wong was asymmetric by studying the wind filed characteristics. Fung-wong was weakened after the boost of vertical wind shear, its structure was also broken after several landings. Overall, Fung- wong tracked eastward with a week strength to make limited effect. The vapor transport condition was unfavorable with no cooperation of the cold air, and therefore the rainfall on the north bank of Tai Lake was mainly moderate, the wind was concentrated around Fung-wong’ s center circulation. The effect caused by Fung-wong was limited.