摘要
通过对0814强台风"黑格比"和9615台风"莎莉"的移动路径及强度特点分析,结果得出台风受到500 hPa不断加强的大陆副热带高压南侧偏东气流的引导,移速不断加快,而且与台风同向移动增强的副热带高压使台风的移速更快。强劲、持续的越赤道气流输送、对流层高层持续的强辐散以及弱水平风垂直切变都有利于台风显著加强和维持。台风螺旋云带的变化对台风移动趋势有预示作用。
The track and intensity characteristics of severe typhoon Hagupit and Sally are analysed here.The conclusions are：Typhoon move faster because it is leaded by the continuous strengthening easterly airstream on the south edge of the subtropical high,moreover the strengthening subtropical high moving forward in the same direction with typhoon track make typhoon travel faster.The strong and persistent cross-equator flow,sustaining upper-level divergence and weak vertical wind shear are advantageous to Strengthened and Maintenance of typhoon.The change of spiral band may indicate the mobile trend of typhoon.
出处
《海洋预报》
2010年第3期30-34,共5页
Marine Forecasts
基金
广州市科技重大项目(编号:2007Z1-E0101)
