登陆福建热带气旋短时强降水特征  

Characteristics of Nowcasting Heavy Rain of Landing Troprcal Cyclones on Fujian

作　　者：陈秋萍[1] 陈敏艳[1] 刘爱鸣[1] 陈齐川[1] 黄铃光[1] 

机构地区：[1]福建省气象台,福州350001

出　　处：《气象研究与应用》2016年第3期24-28,I0001,共6页Journal of Meteorological Research and Application

基　　金：基于多普勒雷达的台风强降水短时临近预报方法研究(福建省自然科学基金2014J01148资助)

摘　　要：利用地面逐时降水资料、常规天气资料、雷达、卫星以及台风年鉴资料,对39个登陆福建不同地段的台风短时强降水空间、时间分布及强降水强度、落区、过程雨量分布及其与登陆时台风强度关系等进行统计分析,揭示登陆福建台风短时强降水规律,结果表明:(1)登陆中部台风强降水站数虽多,但单站强降水持续时间最短;登陆北部台风强降水站数虽少,但单站强降水持续时间最长。(2)强降水主要时段登陆北部、中部类是登陆前5小时至登陆后5小时,登陆南部及南海北上类是登陆时至登陆后15小时。此外,南海北上类及登陆北部类强降水落区多数在内核区;登陆中部类强降水落区在台风中心附近的频率是几类中最低的,大部分强降水落区在北侧的螺旋雨带上。By using hourly precipitation,routine data,radar,start and TC data,temporal and spatial distribution of short-range heavy rain,intensity of rain,rain region and process rain thirty-nine TC landed Fujian were analyzed.The results show that station number of heavy rain is more in middle parts,but durations of heavy rain is shortest.Heavy rain occurred in the 5hrs before landfall to 5hrs post landfall for northern and middle parts.h occurred in the first 15hrs post landfall for southern and coming from the South China Sea.In addition,region of heavy rain is in central for coming from the South China Sea and north parts.The frequency in central is lowest for landing middle parts.Most is in spiral rain bands of northere.Large region of mean process rain is in northeast coastal for north and middle parts,however mean intensity and duration are greater for north parts.

关 键 词：热带气旋 强降水 短时临近 预报 

分 类 号：P46[天文地球—大气科学及气象学]