Position: Home > Articles > Physical Diagnosis of a Heavy Rainfall in Pre- flood Season in South China
Journal of Anhui Agricultural Sciences
2015,13
(13)
254-258
一次华南前汛期暴雨过程的物理量诊断分析
作 者：
刘璇
单 位：
民航华东地区空中交通管理局气象中心
关键词：
华南前汛期;暴雨;物理量;诊断分析
摘 要：
采用NCEP/NCAR 1°×1°6 h全球再分析资料、1 h加密雨量资料和常规气象观测资料,从降水相关物理量入手,对"08.6.14"华南前汛期降水过程进行诊断分析。结果表明,来自孟加拉湾和南海源地的水汽为2008年6月14~19日华南降水提供了充足的水汽条件;从地面到对流层顶存在的正负涡度耦合和正负散度耦合的双耦机制,构成了此次降水的动力机制;低层大气的不稳定层结和异常强烈的螺旋度为暴雨提供了启动机制。
译 名：
Physical Diagnosis of a Heavy Rainfall in Pre- flood Season in South China
作 者：
LIU Xuan;Meteorological Center of East China Air Traffic Management Bureau;
关键词：
Pre-flood Season in South China;;Heavy rain;;Physical quantity;;Diagnostic analysis
摘 要：
The physical diagnosis of precipitation during Pre- flood Season in South China from June 14 th,2008 is analyzed by using NCEP /NCAR global reanalysis data with the resolution of 1° × 1° every 6 hours,hourly rainfall data and conventional meteorological data. The results indicate that during Pre- flood Season in South China from June 14 th to June 19 th,2008,the Bay of Bengal and South China Sea transported abundant moisture towards South China. The coupling of positive & negative vorticity and positive& negative divergence can be considered as a double coupling mechanism. And the double coupling mechanism existing from the ground to the tropopause constituted the dynamic mechanism of the precipitation. The instability of lower atmosphere and abnormal increased helicity provided a trigger mechanism to the heavy rain.
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