0601台风“珍珠”暴雨的数值模拟及诊断分析  

The Numerical Simulation and Diagnostic Analysis on the Rainstorm of 0601 Typhoon 'Chanchu'

作　　者：白玉洁 杨群娜 陈玉玮 唐历 黄巧敏 

机构地区：[1]广东省气象科技培训中心,广州510080 [2]广东省潮州市气象局,广东潮州521011 [3]广东省气象台,广州510080 [4]广东省深圳市气象局,广东深圳518040 [5]广东省韶关市气象局,广东韶关512028

出　　处：《中国农学通报》2011年第26期287-292,共6页Chinese Agricultural Science Bulletin

摘　　要：为了研究台风暴雨过程对局地的影响,利用WRF模式,对0601号强台风"珍珠"引发广东潮州的暴雨过程进行数值模拟,并对模拟的结果进行Q矢量诊断和分析。模拟结果表明,强台风"珍珠"活动期间,低层辐合对潮州的暴雨降水有非常重要的作用,同时配合低层充沛的水汽输送触发了强降水的产生。对WRF模式的输出结果,利用Q矢量进行诊断,发现沿着降水区域移动方向,始终有Q矢量辐合区配合。同时,Q矢量散度的大值区对应降水大值的分布。Q矢量散度在垂直方向的分布,可以用来判断锋生与锋消,对台风的衰减与消亡有一定的预报意义。In order to analyze the local affect of typhoon rainstorm,the author simulated the rainstorms caused by 0601 typhoon ＇ Chanchu ＇ in Chaozhou of Guangdong with WRF model,and the simulated results which had been diagnosed and analyzed by using the method of Q vectors.The simulated results showed that low level convergence and transportation of moisture were critical to typhoon rainstorm during typhoon ＇ Chanchu ＇.The author diagnosed the outputs of WRF model by using Q vectors,the results showed that the raining areas coexisted with Q vectors convergence along its moving direction.At the same time,the big values areas of Q vectors divergence were corresponded by large rain distribution.The vertical distribution of Q vectors divergence could be estimated the frontgenesis and frontolysis.This two physics factors could be used to forecast the decay and disappear of typhoon.

关 键 词：WRF模式 低层辐合 Q矢量散度 诊断分析 

分 类 号：P444[天文地球—大气科学及气象学]