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投稿时间:2009-03-20 修订日期:2009-12-21
投稿时间:2009-03-20 修订日期:2009-12-21
中文摘要: 运用统计学、天气学、卫星云图和物理诊断等方法,对1970—2004年35年间发生在陕西重大洪灾事件和近海台风活动(130°E以西的台风)进行分析。结果发现,陕西重大洪灾与近海台风活动相关率达90%。重大洪灾事件主要集中在7、8两个月,约占88%,当影响台风在南海区域生成或从西太平洋西移穿越过130°E时 ,对陕西重大洪灾影响明显。其暴雨的水汽、能量主要依靠台风低压外围的偏东风急流来输送,以850 hPa层输送最为显著。近海台风活动为引发陕西重大洪灾的暴雨发生、加强,提供了必需的能量和水汽条件,台风的作用
中文关键词: 台风活动, 重大洪灾, 综合分析
Abstract:The offing typhoon in west of 130°E and major flooding events in Shaanxi during the past 35 years (1970-2004) were analytically studied by applying methods of statistics, synoptic, satellite cloud image analysis and physical diagnosis. Results show that the correlation is close to 90%. Major flooding events are concentrated in July and August, occupying nearly 88% of the total. When a typhoon originates in 130°E or moves westwards from the West Pacific across 130°E, it has more obvious influences on major flooding events in Shaanxi. The required water vapor and energy are transited through easterly winds around the typhoon center, especially in 850 hPa level. The offing typhoon provides necessary water vapor and energy to the occurrence and enhancement of flood causing torrential rain in Shaanxi, and typhoon influence is an important factor to induce major flooding events in Shaanxi.
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基金项目:中国气象局上海台风研究所台风基金(2008ST09)和国家自然科学基金(40505010)共同资助
作者 | 单位 |
侯建忠 | 陕西省气象台, 西安 710015 |
张弘 | 陕西省气象台, 西安 710015 |
李明娟 | 陕西省气象台, 西安 710015 |
慕建利 | 陕西省气象台, 西安 710015 |
吴林荣 | 陕西省气象台, 西安 710015 |
引用文本:
侯建忠,张弘,李明娟,慕建利,吴林荣,2010.台风活动对陕西重大洪灾事件影响的综合分析[J].气象,36(9):94-99.
HOU Jianzhong,ZHANG Hong,LI Mingjuan,MU Jianli,WU Linrong,2010.A Comprehensive Analysis of Typhoon Influences on Major Flooding Events in Shaanxi[J].Meteor Mon,36(9):94-99.
侯建忠,张弘,李明娟,慕建利,吴林荣,2010.台风活动对陕西重大洪灾事件影响的综合分析[J].气象,36(9):94-99.
HOU Jianzhong,ZHANG Hong,LI Mingjuan,MU Jianli,WU Linrong,2010.A Comprehensive Analysis of Typhoon Influences on Major Flooding Events in Shaanxi[J].Meteor Mon,36(9):94-99.