摘要
对太湖流域1999—2007年5—9月流域强降水出现频次、极值分布和各分流域间强降水关系进行统计分析,初步得出了太湖流域强降水的时空分布特点,即各分流域强降水的月际变化明显,但频次分布、极值分布差异不大。对出现强降水时影响天气系统进行了统计分析,表明不同月份不同的天气系统对流域强降水的影响有明显差别。另外,还分别分析了梅雨期太湖流域强降水的天气形势和夏季台风影响造成的太湖流域强降水。
Based on statistics of frequency of heavy rain(daily areal rainfall ≥20 mm),distribution of extreme values and relations of rainfall among various parts of the Taihu Basin during May to September from 1999 to 2007,the spatial and temporal characteristics of heavy rain over the Taihu Basin are concluded as follows:There are distinct monthly variations and indistinct frequency and extreme values of heavy rainfall.Also,statistical analysis for impacting weather systems during heavy rainfall illustrates that different weather systems in different months have remarkably different effects on heavy rainfall over the various parts of the Taihu Basin.On the other hand,weather situations of heavy rain in Meiyu season and characteristics of heavy rain during typhoon impacting season are statistically analyzed.
出处
《大气科学研究与应用》
2010年第1期19-31,共13页
Atmospheric Science Research and Application
