0519号台风“龙王”登陆福建沿海前后结构特征分析

Analyzing the structure of typhoon "Longwang" before and afterlanding in Fujian coast

通过利用双向嵌套中尺度非静力数值预报模式NM5V3对0519号台风“龙王”登陆福建前后过程（2005年10月2日08：00—3日08：00）进行了数值模拟，在模拟效果较理想的基础上利用其输出的高时空分辨率资料对“龙王”台风登陆福建沿海前后结构特征进行分析．结果表明：（1）登陆前后除暖中心在台风中心最强外，其它物理量的极值一般都出现在离台风中心100—200km区域；（2）台风登陆福建沿海后虽然在热力、动力和环流上还保留有热带气旋的一些分布特征，但在强度和空间分布上已经发生了明显的变化．

Based on the two-way nested non-hydrostatic mesoscale numerical model（ MM5V3 ） ,a whole process during typhoon ＂Long wang＂ landing in Fujian is simulated. Using high space-time resolution data from the model the structure of typhoon is analyzed before and after the typhoon landing. The result shows that, except for the warm temperature center appeared in the center of typhoon, the extremum of physical quantities were generally appeared in areas 100 - 200km away from the typhoon center. After the landing, the thermodynamic, dynamical structure and circulation changed markedly in intensity and space though characters of typhoon were reserved.