摘要
利用湘东南东江流域1959～2006年共48年的历史资料,采用统计分析方法,对东江流域历年雨水集中期的气候规律以及2006年雨水集中期的特征及成因进行了分析。分析结果表明:东江流域历年的雨水集中期多出现在6月和8月;东江流域雨水集中期的出现,受台风的影响较大。2006年由于04号台风"碧利斯"的影响导致了本年的雨水集中期出现在7月中旬,其特征是降水强度强、强降水范围广、过程降雨量大,而大尺度引导气流、南海季风对"碧利斯"的西行路径及降水强度影响较大。
Based on the historical data got from 1959 to 2006 in the valley of Dongjiang river in the southeast Hunan, the climatic features and regularities in centralized rainfall period in 48 years are analysed and discussed, and the cause of centralized rain occurred in 2006 has been made in detail. The results show that the centralized rain occurred in June and August are impacted by Typhoon in a great degree. Since the westing path of typhoon 04 ＂bilis＂ was influenced by the large scale airflow and monsoon in south China sea , 2006＇s rain season changed to July with the high precipitation intensity, wide area and great rainfall. This research could offer some references for the forecasting in the rain season in Dongjiang river area.
出处
《暴雨灾害》
2007年第2期154-158,共5页
Torrential Rain and Disasters
基金
重点项目高分辨率数值预报产品释用方法研究和精细化数值预报研究(课题编号0602)
关键词
东江流域
雨水集中期
台风
The valley of Dongjiang river
Centralized rainfall period
Typhoon
