台风蒲公英两次登陆过程的强度变化分析  

Intensity Changes of Typhoon Mindulle during Two Times of Landing

作　　者：黄辉 陈淑琴 

机构地区：[1]浙江省舟山市气象局,316004

出　　处：《气象》2006年第4期106-109,T0002,共5页Meteorological Monthly

摘　　要：主要通过台风蒲公英来研究台风登陆时的强度变化问题。首先利用雷达回波资料分析了台风蒲公英在台湾和浙江两次登陆过程的结构变化,发现第一次登陆后,结构明显变得松散,第二次登陆后,气旋的结构反而变得更有组织性、更紧密。并用浙江省地面自动气象站资料来分析雨带分布、地面涡度分布的变化情况,进一步证实“蒲公英”在浙江登陆后强度确实有所加强。最后用NCEPT再分析资料对比分析了“蒲公英”在两次登陆时的水汽和斜压能量等条件,发现第二次登陆时环境条件明显要好。因此认为台风蒲公英在浙江登陆后强度维持的原因主要是水汽的输送,北面冷空气的入侵等。The intensity change of typhoon Mindulle landing is studied. First, the structure changes during typhoon Mindulle landing at Taiwan and Zhejiang provinces are analyzed with the radar echo data. The result shows that Mindulle seems loose during its first landing but has become more organized during its second landing. The enhancement of Mindulle is proved further by the rain belt distribution and the vorticity distribution on the surface, which are calculated with the data of automatic meteorological stations in Zhejiang Province. At last, the vapor and baroclinic energy conditions during two landings are analyzed with the NCEP reanalysis data. It shows that the main reasons for ‘Mindulle’ to enhance during the second landing are the vapor transport from oceans, and the intrusion of cold air from the north.

关 键 词：台风蒲公英 登陆 强度变化 

分 类 号：P444[天文地球—大气科学及气象学] V529.1[航空宇航科学与技术—人机与环境工程]