| 辽宁黑山突发性局地特大暴雨中尺度对流条件和特征 |
| |
| 引用本文： | 才奎志,蒋大凯,杨磊,于增华,孙晓巍,陈宇,谭世君.辽宁黑山突发性局地特大暴雨中尺度对流条件和特征[J].气象与环境学报,2014,30(6):1-7. |
| |
| 作者姓名： | 才奎志 蒋大凯 杨磊 于增华 孙晓巍 陈宇 谭世君 |
| |
| 作者单位： | 1.辽宁省气象灾害监测预警中心，辽宁 沈阳 110166； 2.辽宁省气象台，辽宁 沈阳 110166；辽宁省气象局，辽宁 沈阳 110001 |
| |
| 基金项目： | 中国气象局预报员专项“基于SWAN系统的定量降水技术研究与应用”(CMAYBY2013-016);辽宁省气象局气象科研项目“不同类别强对流天气的探空T-logp图分析技术”(201407)共同资助 |
| |
| 摘 要： | 利用常规和加密自动气象站观测资料、卫星和雷达探测资料以及NCEP再分析资料（1°×1°，6h）, 对2013年8 月15-16日辽宁黑山地区特大暴雨的中尺度对流条件和对流系统特征进行探讨。结果表明: 此次强降水由中-β尺度系统引起，短时大暴雨发生在能量舌边缘，地面偏东风和地形强迫抬升作用造成对流单体沿着山脉东侧生成、发展和移动,最终导致持续性对流性强降雨。东北低压冷锋前所激发的中尺度切变和涡旋触发了局地大暴雨。黑山地区上游有两个对流单体生成，向东移动合并影响该地区，移动方向前侧的斜升气流和低质心回波提高了降水效率。
|
| 关 键 词： | 能量舌 中尺度涡旋 地形强迫 斜升气流 |
Mesoscale convective conditions of abrupt and local rainstorm and its characteristics at Heishan of Liaoning province |
| |
| CAI Kui-zhi,JIANG Da-kai,YANG Lei,YU Zeng-hua,SUN Xiao-wei,CHEN Yu,TAN Shi-jun.Mesoscale convective conditions of abrupt and local rainstorm and its characteristics at Heishan of Liaoning province[J].Journal of Meteorology and Environment,2014,30(6):1-7. |
| |
| Authors: | CAI Kui-zhi JIANG Da-kai YANG Lei YU Zeng-hua SUN Xiao-wei CHEN Yu TAN Shi-jun |
| |
| Institution: | 1. Liaoning Meteorological Disaster Monitoring and Early Warning Centre, Shenyang 110166, China; 2. Liaoning Meteorological Service, Shenyang 110001, China |
| |
| Abstract: | Based on data from conventional and automatic weather stations, satellite and radar, and the NCEP reanalysis data (1°×1°, 6 h), the mesoscale convective conditions and convective system characteristics of an extraordinary rainstorm process on August 15-16, 2013 at Heishan of Liaoning province were analyzed. The results show that the severe precipitation process is caused by mesoscale-β convectional systems. The short-term torrential rain area occurs at the edge of energy tongue. Surface eastward wind and topographic force are dominant factors that causes generation, development and movement of convection cells along the east side of mountain, which lead to the continuous and convectional precipitation. The mesoscale wind shear and vortex motivated by the northeast low-pressure cold front trigger the local torrential rain. Two separate convective cells generate in upper reaches of heavy rain areas, and merge together and then influence Heishan County. The oblique ascension airflow in front of echo moving direction and low heart echo both enhance precipitation efficiency. |
| |
| Keywords: | High energy tongue Mesoscale vortex Terrain force Oblique ascension airflow |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《气象与环境学报》浏览原始摘要信息 |
| 点击此处可从《气象与环境学报》下载免费的PDF全文 |
|
