摘要
运用中尺度WRFV3.0模式,对2009年4月19日00时—22日00时期间的一次江淮气旋进行了数值模拟(控制试验CTR)研究,得出在CTR中江淮气旋的路径和发展趋势总体上比较理想,为此进一步设计海洋属性敏感试验,探讨海洋属性对江淮气旋的路径和强度的影响。结果表明:当海洋属性修改成陆地属性后,江淮气旋路径向东南偏移,入海后,偏离程度增大;气旋强度在大别山附近稍有增强,入海后强度减弱。气旋中心南侧的偏南气流、气旋前部的水汽辐合区和强对流有效位能,以及气旋中心附近的强潜热能,均有利于江淮气旋发展。
A simulation experiment was conducted using the WRFV3.0 model about Jiang-Huai cy- clones from 00：00 UTC April 19 to 00.00 UTC April 22, 2009. A sensitive experiment was carried out by changing marine attribution into land attribution in the researching area to discuss the impact on the track and the intensity of Jiang-Huai cyclones. The results indicated that, when marine attributionchanged into land one ,Jiang-Huai cyclone track was deviated to the southeast compared with the real situ- ation, and the deviation became relatively larger on the sea; cyclone intensity increased slightly in the Dabieshan area and weakened subsequently on the sea. All factors, such as water vapor convergent zone, strong convective available potential energy in the front of the cyclone, the latent energy in the center of the cyclone and south airflow in the south of the cyclone＇s center, were conducive for the development of Jiang-Huai cyclones.
出处
《气象科学》
CSCD
北大核心
2011年第6期726-731,共6页
Journal of the Meteorological Sciences
基金
公益性行业(气象)科研专项(GYHY201106006)
江苏省科技厅社会发展项目(BS2007088)
江苏省科技厅社会发展指导性项目(2006556)
关键词
江淮气旋
模拟
海洋因子
Jiang-Huai cyclones
Simulation
Marine factor
