“浪卡”不对称结构和异常暴雨落区分析

使用美国国家环境预报中心（NCEP／NCAR）的再分析资料、日本GSM产品、广东省遥测站资料、卫星云图以及MICAPS资料，通过合成分析方法，研究0904号热带风暴“浪卡”结构和异常暴雨落区原因。结果表明：（1）“浪卡”结构的强不对称性主要是由于流场分布不均匀这一动力因素造成，“浪卡”大风区分布在南侧和东侧地区．其北侧...

Analysis of Nangka Asymmetric Structure and Abnormal Rain Fall Area

Basing NCEP/NCAR reanalysis data, data, satellite images and MICAPS data, using storm ＂Nangka＂ and the cause for abnormal rain Japan＇s GSM products, information, Guangdong telemetry synthetic analysis method, the structure of‘0904’ tropical fall area were analyzed. The results show that（1） the cause of ＂Nangka＂ strong asymmetry structure is uneven distribution of flow field. The strong （weak） wind area locates to the south and east （north and west） of ‘Nangka＇. （2）Deviating ＂Nangka＂ moving path, the heavy rainfall area located in the west of the Pearl River estuary. The reason is that vertical wind shear environment field makes ＂Nangka＂ weakened quickly after landing. Overall structure separate into the upper and lower parts. The high-level clouds are guided by High altitudes air to move southwestward. Correspondingly, the southwest airflow also converged in the west of the Pearl River estuary.